KR20090123823A - Doorclosing deveceand door device provided therewith - Google Patents

Abstract

PURPOSE: A door closing device and a door apparatus with the same are provided to open a door with a little power and to silently close a door by suppressing the sudden rotation of a door. CONSTITUTION: A door closing device(1) includes a device main body(6) and a guided member(7). The device main body is attached to a door frame. The guided member is attached to a door(A). The device main body includes a door closing arm, a pressurizing mechanism, and a direct-acting type shock absorbing mechanism. The door closing arm is interlocked with the rotation of the door to be hanged/separated to/from the guided member. If the guided member is hanged to the door closing arm, the pressurizing mechanism compulsively rotates the door closing arm to the closed direction. The direct-acting type shock absorbing mechanism suppresses the rotation when the door closing arm is rotated to the closing direction of the door. The direct-acting type shock absorbing mechanism promotes the rotation when the door closing arm is rotated to the counter direction of the door.

Description

Door closing device and door device with the door closing device {DOORcLOSING DEVECEaND DOOR DEVICE PROVIDED THEREWITH}

The present invention relates to a door closing device for forcibly and quietly closing a door that opens and closes an entrance and a door of a room or a room.

Background Art Conventionally, door closing devices exist in which doors that open and close doors of a house, such as entrances and entrances of a room, are decelerated and closed quietly just before the doors are completely closed (Patent Document 1).

This conventional door closing device 100, as shown in Figure 8, the apparatus main body 101 attached to the door (A) and the upper frame member of the door frame provided in the opening of the house (horizontal constituting the upper edge of the door frame) And a bracket 102 attached to the member B extending in the direction. The apparatus main body 101 is attached near the side end of the side to which the hinge 103 is attached to the upper end part of the back surface of the door A. As shown in FIG. The bracket 102 corresponds to the position to which the apparatus main body 101 is attached, and the vertical frame member of the side where the hinge 103 is attached to the upper frame member B (a pair of left and right of the door frame (in the example shown) It is attached near the member (C) extended in the up-down direction which comprises the side edge part of the right side). The apparatus main body 101 has an arm 104 curved in an arc shape. Guide grooves 105a are formed in the arm main body 105 of the arm 104. At the distal end of the bracket 102, a pin 102a is engaged with the guide groove 105a of the arm 104.

In this conventional door closing device 100, before the pin 102a of the bracket 102 is engaged with the guide groove 105a of the arm 104 of the apparatus main body 101, it is shown in FIG. 9 (A). As shown, the protrusion 108a of the slider 108 pressed by the spring 107 abuts against the protrusion 106a provided on the support 106 of the arm 104. For this reason, the arm 104 receives the moment of the counterclockwise rotation direction shown by the arrow in the same figure, while the side edge end of the arc-shaped vertical plate 106b of the support part 106 has the buffer mechanism 110 in it. Touches the boss (not shown) of the case 109 to which it is attached or the flange 110a of the shock absorbing mechanism 110, thereby receiving a moment in the clockwise direction. Accordingly, the arm 104 is provided with a door for the predetermined closing angle (upper frame member B) that can be engaged with the pin 102a of the bracket 102 as shown in the figure. The angle corresponding to A)). When the door A is closed, the opening (guide) of the guide groove 105a as shown in the figure so that the pin 102a of the bracket 102 can be engaged with the guide groove 105a of the arm 104. The position where the pin 102a enters and exits the groove 105a is reached.

After the pin 102a is engaged with the guide groove 105a, the movement of the door A in the direction indicated by the arrow in FIG. 9 (B), that is, as the door A is closed, the pin 102a is closed. It starts to move relative to the arm 104 by following this guide groove 105a. At this time, the arm 104 starts to rotate in the clockwise direction indicated by the arrow in the same drawing, and the contact portion of the slider 108 with respect to the protrusion 106a of the arm 104 is the projection 108a. Since the position changes from the position to the position of the closed end face, the arm 104 receives the moment in the clockwise direction indicated by the arrow in the figure. As soon as the arm 104 starts to rotate in response to this moment, the door A automatically rotates in the direction of the arrow in the drawing, and closes as shown in Fig. 9C. By the way, on the rotation of the arm 104 described above, the rotation speed is decelerated by the shock absorbing mechanism 110 acting on the rotation axis of the arm 104, so that the door A is closed when the door A is closed. The rotation of the motor is also slowed down. For this reason, the door A violently collides with the door stop (not shown), and it closes quietly without causing the inconvenience which an impact sound etc. generate | occur | produce.

In addition, when the door A is opened from the state of FIG. 9C, that is, the door A is closed, the pin 102a of the bracket 102 opens the guide groove 105a of the arm 104. While moving relative to the arm 104, the arm 104 rotates in the counterclockwise rotation direction indicated by the arrow in the figure while resisting the pressing force of the spring 107. FIG. And the engagement of the guide groove 105a of the said arm 104 and the pin 102a of the bracket 102 is released in the place shown in FIG. 9 (A), but the said arm 104 does not have this engagement. In the released position, it is maintained at the angular position corresponding to the predetermined closing angle as described above.

However, like the door closing device mentioned above, the apparatus main body 101 with the shock absorbing mechanism 110 is attached to the side end of the upper end of the back surface of the door A near the hinge 103. The bracket 102 to the position of the apparatus main body 101, and attach the bracket 102 to the vicinity of the vertical frame member C on the side of the upper frame member B to which the hinge 103 is attached. By adopting a configuration that allows the door A to be closed quietly, the object can be achieved. However, when the door A is opened, the device main body 101 is hinged 103 at the upper end of the rear surface of the door A. The door is attached close to the opposite side end of the attached side end, and the bracket 102 is correspondingly attached to the close end of the upper frame member B, in comparison with the vertical frame member D. The force applied to the handle of (A) must be increased, and the force applied to the handle increases, and the load on the hinge increases. There is a problem.

Moreover, the shock absorbing mechanism 110 used in the above-described door closing device is a rotary type, and forms a structure in which a force that always resists rotation of the rotating shaft acts on the rotating shaft of the arm 104. The problem as mentioned above becomes a factor which arises, and the problem which becomes difficult to set to encourage rotation of an arm when the desired time at the time of arm 102 rotation, for example, when door A is opened, has become a problem. have.

Moreover, when the shock absorbing mechanism 110 is made into a rotary type, the dimension generally becomes large, so that the apparatus main body 101 to which it is attached is enlarged, and therefore, the apparatus main body ( 101 becomes difficult to attach, and as described above, the apparatus main body 101 must be of a type that attaches the apparatus main body 101 to the door A side and the bracket 102 to the upper frame member B, so that the appearance is good. It becomes difficult to do.

[Patent Document 1] Japanese Patent Application Laid-Open No. 2007-120140 (4th to 8th pages, Figs. 1 and 4 to 6)

The problem to be solved by the present invention is to realize a door closing device that can close the door quietly when the door is closed when closing and to open the door with weak force without opening the body of the device. It is possible to attach the apparatus main body to the door frame, and to provide a door apparatus provided with the door closing device.

[Door closing device]

In order to solve the above problem,

The door closing device of the present invention is a door closing device (1) for forcibly closing the door (A) connected to the door frame in a horizontal direction through a hinge (5),

An apparatus body 6 attached to the door frame,

It has a guide member 7 fixed to the door A,

The apparatus main body 6,

A fixing element 40 fixed to an upper edge of the door frame opening,

A shaft portion 14c rotatably supported in the horizontal direction by the fixing element 40 and first and second arms protruding from the shaft portion 14c in different directions outside the horizontal direction. A rotating piece 14 having parts 14a and 14b,

A door closing arm 20 configured to rotate horizontally with the pivoting piece 14 and to be engaged or disengaged with the guide member 7 with the rotation of the door A;

When the guide member 7 is not engaged with the door closing arm 20, the door closing arm 20 can be held in a waiting position waiting for engagement with the guide member 7. After the member 7 is engaged with the door closing arm 20, the door closing arm 20 can be forcibly rotated in the direction of closing the door A. A pressurizing mechanism 50 that exerts an elastic force on the 1 arm portion 14a,

When the door closing arm 20 rotates in the direction of closing the door A, the rotation can be suppressed, and when the door closing arm 20 rotates in the opposite direction, the rotation is performed. It is possible to have a direct-acting shock absorbing mechanism 60 that exerts a force on the second arm portion 14b of the rotating piece 14 so as to facilitate the acceleration.

With the above configuration, when the guide member is not engaged with the door closing arm, i.e., when the door is opened larger than the opening degree at which the door closing arm and the guide member can be engaged, the door closing arm can be It is held in an atmospheric position by the elastic force. When the door is closed, the guide member with the door approaches the apparatus main body, and the guide member is engaged with the door closing arm when the opening degree of the door reaches a predetermined opening degree. When the door is further closed afterwards, the door closing arm starts to rotate in the direction of closing the door from the waiting position. At the same time, the elastic force of the pressing mechanism starts to act as a force forcing the door closing arm to rotate in the direction of closing the door. With the forced rotation of this door closing arm, the door is forcibly closed. At this time, the resistance of the shock absorbing mechanism starts to be effective to suppress the rotation of the door closing arm, so that sudden movement of the door is prevented. By this, the door can be forcibly and quietly closed. On the other hand, when the door is opened from the state where the door is completely closed, the door closing arm starts to rotate in the direction of waiting posture with the door opening operation. At the same time, the repulsive force of the shock absorbing mechanism starts to act as a force for rotating the door closing arm in the direction of opening the door, and the rotation of the door closing arm in the direction of opening the door is promoted. As a result, when opening the door manually, it is possible to open the door without applying great force. Since a direct acting mechanism is used as the shock absorbing mechanism, a door closing device capable of closing the door quietly when closing the door and opening the door with weak force when opening the door can be realized without increasing the size of the main body of the device.

In the door closing device (1) of the present invention,

The fixing element 40 is

Has a case 70 of a flat rectangular parallelepiped fixed to the door frame, the rotating piece 14, the pressing mechanism 50 and the shock absorbing mechanism 60 is housed together in the case 70,

Insertion through holes 8a1 and 10a6 for connecting the connecting shaft 28a3 of the door closing arm 20 to the shaft portion 14c of the pivoting piece 14 on the bottom plates 8b and 10a of the case 70. ) Is formed,

Preferably, the door closing arm 20 is configured to rotate along the lower surface of the case 70.

As described above, in the flat rectangular parallelepiped case, both the rotating piece, the pressure mechanism, and the shock absorbing mechanism are accommodated, and the door closing arm is rotated along the lower surface of the case, thereby miniaturizing the fixing element fixed to the door frame. In addition, it is possible to realize the door closing device having a simple appearance in which the movable part only uses the door closing arm.

In the casing 70, insertion holes 8a1 and 10a6 for connecting the connecting shafts 28a3 of the door closing arm 20 to the shaft portions 14c of the pivoting piece 14 on the upper and lower surfaces thereof. Are respectively formed, and the connecting shaft 28a3 of the door closing arm 20 can be connected to the shaft portion 14c of the pivoting piece 14 through either of the insertion through holes 8a1 and 10a6. It is preferable that it is comprised so that. Thereby, the door closing device 1 can serve as a right opening door and a left opening door.

Moreover, the said press mechanism 50 has the spring 16 which exerts an elastic force on the 1st arm part 14a of the said rotating piece 14,

When the door closing arm 20 rotates in the direction of closing the door A, the shock absorbing mechanism 60 accompanies the rotation of the second arm portion 14b of the rotating piece 14. It has a linear damper (19) for generating a braking force by repulsing compressed in the horizontal direction,

Preferably, the spring 16 and the damper 19 are installed side by side in parallel with each other. This facilitates the miniaturization of the fixing element.

Moreover, it is preferable that the said apparatus main body 1 has the adjustment means 17 for adjusting the elastic force of the said press mechanism 50. As shown in FIG. As a result, the rotational speed at the closing of the door and the resistance by the spring at the opening can be adjusted.

In addition, the shock absorbing mechanism 60,

When closing the door A, from the time when the latch provided on the end surface of the side where the handle of the door A is installed begins to be inserted into the latch hole provided in the door frame, the pivoting piece 14 It is preferable that it is comprised so that the force which suppresses the rotation does not act on the 2nd arm part 14b of (). Thereby, the resistance force by the shock absorbing mechanism does not act from the time when the latch provided in the end surface of the door starts to be inserted into the latch hole of the door frame, and the door can be closed securely.

Moreover, when the said door A is closed, the said door closing arm 20 is the whole under the lower surface of the case 70, and when it is the said waiting posture, the front end side is the said case 70. It is preferable to come out to the said door A from under the lower surface of (). According to this configuration, when the door is closed, the guide member is engaged with the door closing arm waiting with the front end side protruding toward the door from under the lower surface of the case. When the door is further closed, the door closing arm rotates in the direction of closing the door, and when the door is closed, the door closing arm is stored under the case, that is, the case and the door closing arm overlap each other up and down. It becomes a state.

The guide member 7 includes a support part 30 protruding horizontally from the plate surface of the door A and a sliding member protruding upward from the distal end of the support part 30.摺 動 子) 31,

The door closing arm 20 has a guide groove 27c extending in the rotational radial direction thereof,

When the door closing arm 20 is in the stand-by position, the tip end of the sliding member 31 is configured to be accommodated in the guide groove 27c with the rotation in the direction in which the door A is closed. desirable.

[Door device]

In order to solve the above problems, the door device of the present invention,

A door device having a door frame, a door A connected to the door frame in a horizontal direction through a hinge 5 and a door closing device 1 forcibly closing the door A,

The door closing device 1 is

An apparatus body 6 attached to the door frame,

It has a guide member 7 fixed to the door A,

The apparatus main body 6,

A fixing element 40 fixed to an upper edge of the door frame opening,

First and second arms protruding from the shaft portion 14c, which are rotatably supported in the horizontal direction to the fixing element 40, and from the shaft portion 14c in different directions outside the horizontal direction. ) The rotating piece 14 having the portions 14a and 14b,

A door closing arm 20 configured to rotate horizontally with the pivoting piece 14 and to be engaged or disengaged with the guide member 7 with the rotation of the door A;

When the guide member 7 is not engaged with the door closing arm 20, the door closing arm 20 can be held in a waiting position waiting for engagement with the guide member 7. After the member 7 is engaged with the door closing arm 20, the door closing arm 20 can be forcibly rotated in the direction of closing the door A. A pressurizing mechanism 50 that exerts an elastic force on the 1 arm portion 14a,

When the door closing arm 20 rotates in the direction of closing the door A, the rotation can be suppressed, and when the door closing arm 20 rotates in the opposite direction, the rotation is performed. It is possible to have a direct-acting shock absorbing mechanism 60 that exerts a force on the second arm portion 14b of the rotating piece 14 so as to facilitate the acceleration.

By the above configuration, when the guide member is not engaged with the door closing arm, that is, when the door is opened larger than the opening degree at which the door closing arm and the guide member can be engaged, the door closing arm is pressed. It is held in the atmospheric posture by the elastic force of. When the door is closed, the guide member with the door approaches the apparatus main body, and the guide member is engaged with the door closing arm when the opening degree of the door becomes a predetermined opening degree. When the door is further closed afterwards, the door closing arm starts to rotate in the direction of closing the door from the standby position. At the same time, the elastic force of the pressing mechanism begins to act as a force forcing the door closing arm to rotate in the direction of closing the door. With the forced rotation of this door closing arm, the door is forcibly closed. At this time, the resistance of the shock absorbing mechanism starts to act so as to suppress the rotation of the door closing arm, so that sudden movement of the door is prevented. By this, the door can be forcibly and quietly closed. On the other hand, when the door is opened from the state in which the door is completely closed, the door closing arm starts to rotate toward the standby position with the door opening operation. At the same time, the repulsive force (restoration force) of the shock absorbing mechanism starts to act as a force for rotating the door closing arm in the direction of opening the door, and the rotation of the door closing arm in the direction of opening the door is promoted. As a result, when opening the door manually, it is possible to open the door without applying great force.

In the door apparatus of the present invention, it is preferable that the fixing element 40 is fixedly attached to an end opposite to the side to which the hinge of the upper frame member constituting the door frame is attached. As the fixing element is attached to the end opposite to the side where the hinge of the upper frame member of the door frame is attached, the repulsion force (restoration force) of the shock absorbing mechanism is effective as a force for promoting the opening of the door when opening the door. Can work. Therefore, even if the repulsive force (restoration force) of the shock absorbing mechanism is weak, the effect of assisting the opening of the door when opening the door can be obtained.

In the door apparatus of the present invention,

The fixing element 40 is

Has a case 70 of a flat rectangular parallelepiped fixed to the door frame, the rotating piece 14, the pressing mechanism 50 and the shock absorbing mechanism 60 is housed together in the case 70,

Insertion through holes 8a1 and 10a6 for connecting the connecting shaft 28a3 of the door closing arm 20 to the shaft portion 14c of the pivoting piece 14 on the bottom plates 8b and 10a of the case 70. ) Is formed,

Preferably, the door closing arm 20 is configured to rotate along the lower surface of the case 70.

In the flat rectangular parallelepiped case, the rotating piece, the pressing mechanism, and the shock absorbing mechanism are accommodated together, and the door closing arm is rotated along the lower surface of the case, thereby minimizing the fixing element fixed to the door frame. In appearance, a door closure device having a simple external appearance using only the movable door closing arm can be realized.

Moreover, in the door apparatus of this invention, the said press mechanism 50 has the spring 16 which exerts an elastic force on the 1st arm part 14a of the said rotating piece 14,

When the door closing arm 20 rotates in the direction of closing the door A, the shock absorbing mechanism 60 accompanies the rotation of the second arm portion 14b of the rotating piece 14. It has a linear damper (19) for generating a braking force by repulsing compressed in the horizontal direction,

Preferably, the spring 16 and the damper 19 are installed side by side in parallel with each other. This facilitates downsizing of the fixing element.

Moreover, in the door apparatus of this invention, it is preferable that the said apparatus main body 1 has the adjustment means 17 for adjusting the elastic force of the said press mechanism 50. As shown in FIG. This makes it possible to adjust the rotational speed at the closing of the door and the resistance by the spring at the opening.

Moreover, in the door apparatus of this invention, when the said shock absorbing mechanism 60 closes the said door A, the latch provided in the end surface of the side in which the handle of the said door A is provided is provided in the said door frame. It is preferable to be comprised so that the force which suppresses the rotation does not act on the 2nd arm part 14b of the said rotation piece 14 from the time when it starts to insert into a latch hole. Thereby, the resistance force by the shock absorbing mechanism does not apply from the time when the latch provided in the cross section of the door starts to be inserted into the latch hole of the door frame, and the door can be surely closed.

Moreover, in the door apparatus of this invention, when the said door A is closed, the said door closing arm 20 is the whole under the lower surface of the case 70, and when it is the said waiting posture, It is preferable that the tip side extends toward the door A from under the lower surface of the case 70. According to this configuration, when the door is closed, the guide member is engaged with the door closing arm waiting with the front end side protruding toward the door from under the lower surface of the case. When the door is further closed, the door closing arm rotates in the direction of closing the door, and when the door is closed, the door closing arm is stored under the case, that is, the case and the door closing arm overlap each other up and down. It becomes a state.

Moreover, in the door apparatus of this invention, the said guide member 7 is the contact part which protrudes upward from the support part 30 fixedly attached to the plate surface of the said door A, and the front-end | tip part of the said support part 30. Having a baluster 31,

The door closing arm 20 has a guide groove 27c extending in the rotational radial direction thereof,

When the door closing arm 20 is in the stand-by position, the tip end of the sliding member 31 is configured to be accommodated in the guide groove 27c with the rotation in the direction in which the door A is closed. desirable.

According to the present invention, when the door is closed, the door is forcibly closed by the elastic force of the pressurizing mechanism, and the sudden rotation of the door at the time of closing can be suppressed by the resistance of the shock absorbing mechanism to close the door quietly. At this time, the door can be opened with a weak force by promoting the movement of the door by the repulsive force of the shock absorbing mechanism. By using a linear type as a shock absorbing mechanism for suppressing the sudden movement of the door at the time of closing and promoting the movement of the door at the time of opening, the apparatus main body can be made smaller than the conventional door closing device. Thereby, it becomes possible to install an apparatus main body in a door frame.

Best Mode for Carrying Out the Invention The best mode for carrying out the present invention will be described with reference to Figs. This embodiment applies the present invention to a so-called right door A.

As shown in FIG. 1, the door closing device 1 of this embodiment is rotatable (rotating, opening / closing movement) through the hinge 5 to the door frame attached to the doorway of a house, the doorway of a room, etc. The door A, which is connected to the door A, can be decelerated and quietly closed immediately before the door A is closed (when closed), and the handle of the door A is opened when the door A is opened. It is a device that can be opened without great force. The door frame has the upper frame member 2 provided in the upper edge part of an opening part, such as an entrance and exit of a house, and the vertical frame members 3 and 4 provided in the left and right edge parts of the said opening part. And the door A is rotatably connected to the vertical frame member 4 of one (right side) of the two vertical frame members 3 and 4 via the hinge 5.

The door closing device 1 has the apparatus main body 6 attached to the upper frame member 2 (refer also FIG. 3), and the guide member 7 attached to the door A. As shown in FIG. The apparatus main body 6 is attached in the vicinity of the vertical frame member 3 on the opposite side to the vertical frame member 4 to which the hinge 5 of the upper frame member 2 is attached. The guide member 7 is attached in the vicinity of the end of the side where the hinge 5 in the vicinity of the upper end of the rear surface of the door A is not provided, corresponding to the installation position of the apparatus main body 6.

The device body 6,

A fixing element 40 fixed to the upper frame member 2 of the door frame,

A shaft portion 14c rotatably supported in the horizontal direction by the fixing element 40 and first and second arm portions 14a and 14b protruding from the shaft portion 14c in different directions outside the horizontal direction. Meeting piece 14 with),

A door closing arm 20 configured to rotate horizontally with the pivoting piece 14 and to be engaged or disengaged with the guide member 7 with the rotation of the door A,

When the guide member 7 is not engaged with the door closing arm 20, the door closing arm 20 can be held in a waiting position (see FIG. 4 (A)) that can be engaged with the guide member 7. When the guide member 7 is engaged with the door closing arm 20, the door closing arm 20 can be forcibly rotated in the direction of closing the door A. A pressurizing mechanism 50 that exerts an elastic repulsive force on the one arm portion 14a,

When the door closing arm 20 rotates in the direction of closing the door A, the rotation can be suppressed, and when the door closing arm 20 rotates in the opposite direction, that is, the door A Has a direct-acting shock absorbing mechanism 60 that exerts a force on the second arm portion 14b of the rotating piece 14 so as to facilitate the rotation when the motor rotates in the direction of opening. .

The fixing element 40 has a case 70 of a flat rectangular parallelepiped fixed to the upper frame member 2 of the door frame. The rotating piece 14, the pressing mechanism 50, and the shock absorbing mechanism 60 are housed together in the case 70.

The bottom plates 8b and 10a of the case 70 are formed with insertion holes 8a1 and 10a6 for connecting the connecting shaft 28a3 of the door closing arm 20 to the shaft portion 14c of the pivoting piece 14. It is. The door closing arm 20 has a connecting shaft 28a3 connected to the shaft portion 14c of the rotating piece 14 through the insertion holes 8a1 and 10a6 of the bottom plates 8b and 10a of the case 70. It is. Thereby, the form by which the door closing arm 20 rotates along the lower surface of the case 70 is implement | achieved. In the case 70, insertion through holes 8a1 and 10a6 for connecting the connecting shafts 28a3 of the door closing arm 20 to the shaft portions 14c of the pivoting piece 14 on the upper and lower surfaces thereof, respectively. It is formed, and it is comprised so that the connecting shaft 28a3 of the door closing arm 20 can be connected to the shaft part 14c of the rotation piece 14 through either insertion hole 8a1, 10a6.

The pressurizing mechanism 50 passes through the first slider 15 to the first slider 15 that moves linearly in the longitudinal direction of the case 70 and the first arm portion 14a of the pivoting piece 14. It has a spring 16 for exerting elastic repulsive force.

When the door closing arm 20 rotates in the direction of closing the door A, the shock absorbing mechanism 60 is compressed in the horizontal direction with the rotation of the second arm portion 14b of the rotating piece 14. It has a linear damper 19 which generates a braking force by repulsing.

In the case 70, the coil spring 16 and the damper 19 are provided in parallel with each other.

The apparatus main body 6 has the adjusting means 17 for adjusting the elastic repulsive force of the press mechanism 50. As shown in FIG.

When the door A is closed, the door closing arm 20 is entirely below the bottom surface of the case 70 (see FIG. 5 (B)). It emerges from the bottom of the lower side toward the door A (see Fig. 4A).

The guide member 7 has the support part 30 fixed and attached to the plate surface of the door A, and the sliding member 31 which protrudes upwards from the front-end | tip part of the said support part 30. As shown in FIG.

The door closing arm 20 has a guide groove 27c extending in the rotational radial direction thereof. When the door closing arm 20 is in the stand-by position, the upper end portion of the sliding member 31 is accommodated in the guide groove 27c with the rotation toward the side in which the door A is closed.

When the shock absorbing mechanism 60 closes the door A, a latch (not shown) provided on the end face of the side where the handle of the door A is installed is inserted into a latch hole (not shown) provided in the door frame. It is comprised so that the force which suppresses the rotation does not act on the 2nd arm part 14b of the rotation piece 14 from the time which it starts to become.

By the above configuration, when the guide member 7 is not engaged with the door closing arm 20, that is, the door A can be engaged with the door closing arm 20 and the guide member 7. When the opening is larger than the opening degree, the door closing arm 20 is held in a standby position by the elastic repulsive force of the pressing mechanism 50 (Fig. 4 (A)). When the door A is closed, the guide member 7 approaches the apparatus main body 6 together with the door A, and the guide member is opened when the opening degree of the door A reaches a predetermined opening degree. 7 is engaged with the door closing arm 20 (FIG. 6A). When the door A is further closed afterwards, the door closing arm 20 starts to rotate in the direction of closing the door A from the waiting posture. At the same time, the elastic repulsive force of the pressing mechanism 50 starts to act as a force for forcibly rotating the door closing arm 20 in the direction of closing the door A. As shown in FIG. With the forced rotation of the door closing arm 20, the door A is forcibly closed. At this time, the resistance of the shock absorbing mechanism 60 starts to act so as to suppress the rotation of the door closing arm 20, so that the sudden movement of the door A is prevented. Thereby, the door A can be forcibly closed quietly. On the other hand, when the door A is opened from the state in which the door A is completely closed (Fig. 6 (B)), the door closing arm 20 rotates toward the standby position with the opening operation of the door A. To start. At the same time, the repulsive force of the shock absorbing mechanism 60 starts to act as a force for rotating the door closing arm 20 in the direction of opening the door A, and the door closing arm in the direction of opening the door A ( The meeting of 20) is promoted. As a result, when the door A is manually opened, the door can be opened without applying great force to the handle of the door A. Since the direct acting thing is used as the shock absorbing mechanism 60, the door closing device 1 capable of quietly closing the door A when closing the door and opening the door A with a weak force when opening the door is provided. Can be realized without making the apparatus main body 6 larger.

Moreover, the apparatus main body 6 is attached to the opposite end to the side to which the hinge 5 of the upper frame member 2 which comprises a door frame is attached, and when a door A is opened, a shock absorbing mechanism ( The repulsive force of 60) can be made to act as effectively as a force for promoting the opening of the door A. Therefore, even if the repulsive force (restoration force) of the shock absorbing mechanism 60 is weak, the effect which helps open the door A at the time of opening the door A can be acquired.

In the case 70 having a flat rectangular parallelepiped shape, the rotating piece 14, the pressure mechanism 50, and the shock absorbing mechanism 60 are accommodated together, and the door closing arm 20 is disposed along the lower surface of the case 70. By employing the rotating configuration, the fixing element 40 fixed to the door frame upper frame member 2 can be miniaturized, and the door closing device 1 having a simple external appearance in which the movable part is the door closing arm 20 only in appearance. Can be realized.

Moreover, insertion through holes 8a1 and 10a6 for connecting the connecting shaft 28a3 of the door closing arm 20 to the shaft portion 14c of the pivoting piece 14 are formed on both upper and lower surfaces of the case 70, respectively. Since the connecting shaft 28a3 of the door closing arm 20 can be connected to the shaft portion 14c of the pivoting piece 14 through either of the insertion through holes 8a1 and 10a6, the door closing device 1 ) Can be used for both the right open door and the left open door.

In addition, since the spring 16 and the damper 19 are provided side by side in parallel with each other, miniaturization of the fixing element 40 becomes easy.

Moreover, by having the adjustment means 17 for adjusting the elastic force of the press mechanism 50, the rotational speed at the time of closing of the door A, and the resistance force by the spring 16 at the time of opening can be adjusted suitably.

Moreover, when closing the door A, since the resistance force by the shock absorbing mechanism 60 does not act from the time when the latch provided in the end surface of the door A starts to be inserted into the latch hole of the door frame, the door A will be closed. It can be closed surely.

Next, the structure of the apparatus main body 6 is demonstrated in detail.

As mentioned above, the apparatus main body 6 has the fixing element 40 fixed to the upper frame member 2 of a door frame. As shown in FIG. 2A, the fixing element 40 includes a case 70 having a flat rectangular parallelepiped fixed to the upper frame member 2 of the door frame, and a block 12 fixedly installed in the case 70. 13)

The case 70 is composed of an outer case body 8 and an outer case side plate body 9, an inner case body 10 and an inner case upper plate body 11 that are embedded in the outer case body 8.

In the inner case main body 10, in the example of FIG.2 (A), FIG.4, and FIG.5, the left fixing block 12 is arrange | positioned in the left end corner, and the right fixing block 13 is arrange | positioned in the right end corner, respectively. have. And between the both fixing blocks 12 and 13, the rotating piece 14 provided freely rotationally close to the left fixing block 12 side, and one of them is the 1st arm part 14a of the rotating piece 14. As shown in FIG. The spring which seats on the 1st slider 15 which abuts on the small rotor 23, and the spring seat provided in the other side of this slider 15, and presses the said slider 15 toward the left fixed block 12. (16), and the 2nd slider 18 comprised so that one side may contact the 2nd arm part 14b of the said rotating piece 14 to a predetermined point, but not a predetermined point, and this 2nd slider 18 On the other side, two movable dampers (buffer mechanisms) 19 are arranged, each of which is movable in contact with the movable portion 19a while the fixing portion 19b abuts on the right fixing block 13. The adjusting means 17 is provided in the right fixing block 13.

Among the constituent members of the apparatus main body 6, an inner case main body 10 and an inner case upper plate 11 and an inner case formed of the inner case main body 10 and the inner case upper plate 11 are arranged. The member to be installed will be described.

As shown in FIG. 2 (A), the inner case body 10 is a long, thin, flat hollow substantially rectangular parallelepiped member with an open upper surface side, and the lower plate 10a of the inner case body 10 corresponds to the lower plate 10a. An insertion through hole (lower fitting hole) 10a6 is provided near the left end of the lower plate 10a, along the outer periphery edge of the insertion through hole 10a6, and inside the inner case body 10. The bearing ring 21a of the short dimension protrudes toward the surface, and is elongated at a predetermined distance from a position slightly spaced apart from the bearing ring 21a to a position substantially near the center along the longitudinal direction of the lower plate 10a. Guide grooves 10a1 and 10a2 are provided, respectively. In addition, in the lower plate 10a, near the ends of the guide grooves 10a1 and 10a2 located on the opposite side to the bearing ring 21a and near the center between these guide grooves 10a1 and 10a2, the lower plate ( A substantially square protrusion 22 formed by bending a portion along the longitudinal direction of the lower plate 10a not cut out at the same time as the c-shape at the same time as a c-shape is installed upright, and the guide A relatively large positioning groove 10a3, 10a4 located at a distance from the vicinity of the end of the groove 10a2 to the vicinity of the right end of the lower plate 10a by an approximately equidistant distance from the extension line of the center line of the guide groove 10a2 ( However, the groove (10a4 is not shown) is provided, and moreover, in the vicinity of the right end of the lower plate (10a), the center line on the extension line of the center line of the guide groove (10a1) is relatively small in the form of approximately coincident Guide groove (10a5) Is installed. The convex protrusions 10b1 are provided at the upper end portions of both side plates 10b of which the length of the inner case main body 10 is long, and the length of the inner case main body 10 is provided. In the center of the upper end part in both short side plates 10c, convex protrusion 10c1 is provided, and among these side plates 10c of FIG. 2 (A), FIG. 4, and FIG. An inverted U-shaped operation hole 10c2 is formed at the right end side, and the operation hole 10c2 is formed such that the inverted U-shaped center line perpendicularly intersects the center line of the guide groove 10a5. have.

In addition, although the detailed description is abbreviate | omitted, the some big and small hole provided in the lower board 10a is a bolt for attaching the apparatus main body 6 containing the inner case main body 10 etc. to the upper frame member 2, and so on. Or a pin hole for positioning the inner case upper plate body 11 or the fixing blocks 12 and 13 with respect to the inner case body 10.

The inner case upper plate body 11 is a rectangular thin flat plate-shaped member which can be assembled as a plate body of the upper surface of the inner case body 10, and has an insertion hole (an upper portion of the inner case upper plate body 11). The fitting holes 11a are concentric with the insertion through holes 10a6 of the inner case main body 10, and have the same diameter and correspond to each other, and guide grooves 11b and 11c of the inner case upper plate 11 are formed. ) Has the same groove width and the same groove length as the guide grooves 10a1 and 10a2 of the inner case body 10, and furthermore, the guide groove 11d of the inner case upper plate body 11 is an inner case body ( 10 and the same groove width and the same groove length as the guide grooves 10a5 of 10) are provided in a corresponding form. Also in the inner case upper plate body 11, similarly to the inner case body 10, the inner case upper plate body 11 is formed along the outer circumferential edge of the insertion through hole 11a and shorter to the lower surface side of the inner case upper plate body 11. The bearing ring 21b of the dimension protrudes. On both sides of the long side of the inner case upper plate body 11, recessed cutouts 11e corresponding to the projections 10b1 of the inner case body 10 are provided, respectively, and the inner case upper plate body ( On both sides of the short side of 11), recessed cutout grooves 11f are respectively provided in correspondence with the projections 10c1 of the inner case body 10, and are further spaced slightly apart from the inner grooves 11d. In FIG. 2 (A) of the case upper plate body 11, the section for preventing interference with the flange part 26b of the adjustment screw 26 of the adjustment means 17 mentioned later along the said side edge in the vicinity of the side edge of the right end side. 11 g of grooves are provided.

In addition, although the detailed description is abbreviate | omitted, the some large and small hole provided in the inner case upper plate body 11 carries the apparatus main body 6 containing the said inner case upper plate body 11, etc. to the upper frame member 2, and the like. A bolt hole for attaching or a pin hole for positioning of the inner case upper plate 11 or the like as described above.

Among the members arranged in the inner case formed of the inner case body 10 and the inner case upper plate 11, first, the left fixing block 12 is an elongated horizontal block 12a and a thick and short horizontal block 12b. 4 and 5, when arranged on the inner case main body 10, and are arranged in the inner case main body 10, and the longitudinal block 12c which combines these blocks 12a and 12b. A part of the shaft portion 14c of the pivoting piece 14 is located in the c-shaped space of the left fixing block 12, and the pivoting piece 12a1 is provided on the inclined surface 12a1 provided near the tip of the transverse block 12a. Furthermore, the rotating piece 14 is rotated by the rotation of the rotating piece 14 to the front end surface 12b1 of the horizontal block 12b so that the first arm 14a of the rotating piece 14 abuts by the rotation of the rotating piece 14. The second arm portion 14b of 14 is disposed to abut.

In addition, although the detailed description is abbreviate | omitted, the two big and small holes provided in the left side fixing block 12 attach the apparatus main body 6 containing the said left side fixing block 12 etc. to the upper frame member 2. And a pin hole for positioning the left fixing block 12 in the inner case body 10.

The right fixing block 13 is a substantially L-shaped thin and flat block member composed of a large horizontal block 13a and a vertical block 13b, and the right fixing block 13 of the horizontal block 13a is an inner case body. Adjusting means along the longitudinal center line of the said transverse block 13a where it reaches to the substantially center part of this transversal block 13a from the side which abuts the side plate 10c of the said inner case main body 10 when it is arrange | positioned at (10). When the groove hole 13a1 to which the 17 is arranged is disposed on the upper surface (surface contacting the inner case upper plate body 11 when disposed on the inner case main body 10) and the lower surface (inner case main body 10). The through-hole 13a2 communicating with the groove hole 13a1 abuts on the side plate 10c of the transverse block 13a. It is installed in the form of opening on the side opposite to the side, and this through hole (1 3a2 is provided in such a manner that the central axis thereof substantially coincides with the central axis of the adjustment block 25 of the adjustment means 17 arranged in the horizontal block 13a, and this through hole 13a2 will be described later. As described above, the cylindrical portion 25b of the adjustment block 25 is allowed to enter and exit by advancing and retreating the adjustment block 25 of the adjustment means 17. Moreover, when the right side fixing block 13 of the longitudinal block 13b is arrange | positioned at the inner case main body 10, it is located in the side surface opposite to the surface which abuts on the side plate 10c of the said inner case main body 10, The end surface of the fixing part 19b of the damper 19 is made to contact.

In addition, although the detailed description is abbreviate | omitted, the some big and small hole provided in the right side fixing block 13 attaches the apparatus main body 6 containing the said right side fixing block 13 etc. to the upper frame member 2. Bolt holes for fastening, and pin holes for positioning the right fixing block 13 on the inner case body 10.

The pivoting piece 14 has the shape of the said cylinder part 14c which is a substantially cylindrical shape with a short length, and has a substantially square hole in the center of this cylinder, and the tip extended from the circumference of this shaft part 14c, The first arm portion 14a has a circular arc shape, and the first arm portion 14a has a substantially rectangular second arm portion 14b having a chamfered edge portion. ) And the second arm portion 14b are protruded from the shaft portion 14c so that the center line thereof is approximately 90 degrees. On the upper and lower surfaces of the shaft portion 14c, a small shaft portion 14c1 has a cylindrical shape that is extremely short with an axis diameter smaller than the shaft diameter of the shaft portion 14c, and has a square hole in the center of each of the upper and lower surfaces. 2 (A), only the small axis portion 14c1 on the upper surface side of the shaft portion 14c is shown), and the square holes on the upper and lower surfaces of the small axis portion 14c1 communicate with each other through the screw holes. The small axis portion 14c1 on the upper surface side is provided to the bearing ring 21b of the inner case upper plate body 11, and the small axis portion 14c1 on the lower surface side is the bearing ring 21a of the inner case body 10. ) Are loosely fitted to each. Moreover, the slit 14a1 in which the small rotor 23 is arrange | positioned is provided in the front-end | tip side of the 1st arm part 14a, and the 1st arm which opposes this slit 14a1 across is provided. Concentric through holes are provided in the end portions 14a2 and 14a3 of the portion 14a, respectively, and the pins 24 having a short length and a small diameter for installing the small rotor 23 are inserted in these through holes. By the way, although the case where the small rotor 23 is arrange | positioned in the 1st arm part 14a was demonstrated in this embodiment, it is not limited to this. In the case where the small rotors 23 are not arranged, it goes without saying that the first arm portion 14a is in direct contact with the first slider 15.

The 1st slider 15 is comprised from a thin flat and substantially rectangular parallelepiped member, One side of this slider 15 (the side which the small rotor 23 of the 1st arm part 14a of the said rotating piece 14 abuts). On the side surface 15a, when the slider 15 arranged on the inner case body 10 is viewed from above, the inner case body 10 at an offset position from the longitudinal centerline of the slider 15 is located. The vertex 15a1 is provided near the longitudinal center line, and the inclined surfaces 15a2 and 15a3 which form a predetermined inclination angle from this vertex are provided (see FIGS. 4 and 5). Moreover, on the upper and lower surfaces of the slider 15, the said inner case upper plate body reaches from the one side surface 15a of the said slider 15 to the vicinity of the central part of the said slider 15 along the longitudinal centerline of this slider 15. Elongated ribs 15b1 and 15b2 which are loosely inserted into the guide grooves 11b of 11 and the guide grooves 10a1 of the inner case body 10 are provided (however, the ribs 15b2 are not shown), The slider 15 is guided by these guide grooves 11b and 10a1, and is made to slide. Moreover, the bottom groove hole 15c which has an opening part in this side surface is provided in the center of the other side surface of this slider 15. As shown in FIG.

The spring 16 is a general coil spring having a predetermined spring constant, and the spring 16 is inserted into the groove hole 15c of the slider 15 and the through hole 13a2 of the right fixing block 13, The adjustment means 17 which interposes in both of these forms, and makes the bottom of this groove hole 15c one spring seat, and enters and exits the through-hole 13a2 of the said right fixing block 13 is adjusted. It is interposed so that the end surface in the cylindrical part 25b of the block 25 may be made into the other spring seat, and the force which pushes the said slider 15 toward the left fixed block 12 with respect to the slider 15 is interposed. .

The adjustment means 17 is an apparatus for adjusting the pressing force of the spring 16, and is comprised from the adjustment block 25 and the adjustment screw 26 in this embodiment. Among these, the adjustment block 25 is comprised from the rectangular parallelepiped part 25a and the cylindrical part 25b which adjoins one end surface of this rectangular parallelepiped part 25a, and this rectangular parallelepiped part 25a is along this longitudinal direction axis | shaft. The screw hole 25a1 opened in the other end surface of the said rectangular parallelepiped part 25a is provided, and on the outer peripheral surface of this cylindrical part 25b vicinity of the rectangular parallelepiped part 25a, mutually 180 degrees phase angle is provided. Short bar ribs 25b1 and 25b2 are provided, respectively. On the other hand, the adjustment screw 26 includes a head portion 26a having an operation groove for engaging an operation tool such as a screwdriver on one end surface, and a flange portion 26b that is in contact with the other end surface of the head portion 26a. And a threaded portion 26c which is in continuous contact with the flange portion 26b and which is screwed into the screw hole 25a1 of the rectangular parallelepiped portion 25a.

When this adjustment means 17 is assembled to the right fixing block 13, the rectangular parallelepiped part 25a of the adjustment block 25 can slide to the rod-shaped groove part 13a11 in the groove hole 13a1. In addition, as described above, the cylindrical portion 25b of the adjustment block 25 is assembled into the through hole 13a2 so as to be accessible. However, the ribs 25b1 and 25b2 of the adjustment block 25 are opened through the openings provided in the guide groove 11d of the inner case upper plate body 11 and the lower surface of the groove hole 13a1 of the right fixing block 13. Loosely inserted into the guide groove (10a5) of the inner case body 10, respectively. On the other hand, the adjusting screw 26 of the adjusting means 17 is screwed into the screw hole 25a1 of the rectangular parallelepiped portion 25a as described above, and the flange portion 26b is grooved. It fits in the substantially semi-circular groove part 13a12 in the hole 13a1. At this time, the head part 26a of the adjustment screw 26 becomes a form in which the surface in which the operation groove | channel of the said head part 26a was formed substantially coincided with the surface of the longitudinal block 13b of the right side fixing block 13. . In such adjustment means 17, when the adjustment screw 26 is rotated, the adjustment block 25 moves forward and backward, so that the pressing force of the spring 16 can be adjusted.

The second slider 18 is composed of a thin and flat substantially square member, and is provided on one side of the slider 18 (the side where the second arm portion 14b of the pivoting piece 14 abuts). When the slider 18 arranged on the inner case body 10 is viewed from above, an inclined surface that forms a predetermined inclination angle from approximately the center line in the width direction of the side surface 18a perpendicular to the sliding direction of the slider 18 ( 18a1) is installed (see FIGS. 4 and 5). As described later, the inclined surface 18a1 has a latch provided to the handle of the door A vertically after the rotation of the pivot piece 14 reaches a certain point, that is, with the opening operation of the door A. After reaching the point of insertion into the latch hole provided in the frame member 3, the resistance force from the damper 19 does not act on the second arm portion 14b of the rotating piece 14 via the slider 18. It is set to make it possible. As described above, the end faces of the movable portions 19a of the two dampers 19 abut on the other side 18b of the slider 18. Furthermore, on the upper and lower surfaces of the slider 18, the inner case upper plate body along the center line connecting the side face 18a and the side face 18b of the slider 18 when viewed from above. Elongated ribs 18c1 and 18c2 which are loosely inserted into the guide grooves 11c of 11) and the guide grooves 10a2 of the inner case body 10 are provided respectively (although the ribs 18c2 are not shown). The slider 18 is guided by these guide grooves 11c and 10a2, and is made to slide.

The damper 19 is a shock absorber having a predetermined damping coefficient, and includes a movable part 19a that can move back and a fixed part in which viscous fluid such as silicone oil is enclosed to enable the movable part 19a to be projected. It is comprised by the thing of the direct type | mold type comprised by 19b, and by this, the apparatus main body 6 is made compact and it can be installed in a door frame. When the damper 19 is assembled to the inner case main body 10, the fixing portion 19b is used to position the positioning grooves 10a3 and 10a4 (but not the groove 10a4) of the inner case main body 10. And the projection 22, while contacting the vertical block 13b of the right fixing block 13 as described above, while the end surface of the movable portion 19a is the side surface 18b of the slider 18. In contact with the slider 18, the slider 18 is assembled such that the force of the damper 19 is exerted. By the way, in this embodiment, although the case where the dampers 19 were arrange | positioned and used in parallel was demonstrated, it is not limited to this, For example, even if three or more dampers 19 are arranged in parallel, depending on a specification, good. Alternatively, one damper having a larger capacity than the damper 19 may be disposed.

The door closing arm 20 is a substantially rectangular thin flat plate-like member, and in this embodiment, a cross section along the longitudinal centerline of the member, as shown in Figs. 1 and 3, forms a truncated cone shape. An upper bottom face (one face of the arm (the face that becomes the back face side in FIG. 2 (A))) 27 is formed on the top face side of the truncated cone shape, and a bottom bottom face (the bottom face side on the bottom face side of the truncated cone shape) is formed. The other surface (surface which becomes a surface side in FIG. 2 (A)) of the arm 28 is formed, and the inclined surface 27d which makes a predetermined inclination is formed by this truncated cone-shaped bus bar. A stepped hole 27a is provided in the center of one end of the upper bottom face 27 on the upper bottom face 27, and the opening width of the other end of the upper bottom face 27 is closer to the opening end. An enlarged opening 27b is provided, and the contact of the guide member 7 along the longitudinal centerline of the door closing arm 20 extends from the opening 27b to approximately the center of the door closing arm 20. The guide groove (guide part) 27c which the pupil 31 slides is provided (refer FIG. 3). Moreover, the mounting base 28a protrudes and is provided in the vicinity of the edge part of the lower bottom surface 28 opposite the edge part of the upper bottom surface 27 in which the opening 27b was provided, and this mounting base 28a is the said stepped hole ( 27a) a large-diameter fitting shaft 28a1 that is short and has a large cylindrical shape coinciding with the center thereof, and a small-diameter fitting shaft 28a2 which forms a shorter, smaller diameter cylindrical shape on the fitting shaft 28a1. In addition, short square connecting shafts 28a3 are sequentially stacked and fixedly mounted on the fitting shafts 28a2, and in the centers of these fitting shafts 28a1 and 28a2 and the connecting shafts 28a3, mounting bolts ( A screw hole is formed in which 29 is screwed.

When the door closing arm 20 is assembled so as to interlock with the rotation of the pivoting piece 14, the pivoting piece 14 is arranged on the inner case body 10, and the inner case body 10 is Since it is a structure inserted into the outer case main body 8, the insertion through hole 8b1 (however, the insertion through hole 8b1) of the case main body 8 which mentions the fitting axis 28a1 of the mounting base 28a is mentioned later (Not shown), the fitting shaft 28a2 of the mounting table 28a, the bearing ring 21a of the inner case body 10, and the connecting shaft 28a3 of the mounting table 28a are rotated. Loosely fit into the square holes of the small shaft portion 14c1 of the shaft portion 14c of the shaft 14c, and then attach the mounting bolt 29 from the upper bottom surface 27 side of the door closing arm 20 to the mounting table 28a. The screw holes of the fitting shafts 28a1 and 28a2 of the coupling shaft and the coupling shaft 28a3 may be used. At this time, the head of the mounting bolt 29 is embedded in the stepped hole 27a, while the tip of the threaded portion of the mounting bolt 29 does not protrude from the small shaft portion 14c1 side of the pivoting piece 14. Instead of being screwed into the screw hole (see Figure 3).

Next, the outer case main body 8 and the outer case side plate body 9 will be described. The outer case main body 8 is an elongated, thin and flat hollow substantially rectangular parallelepiped member having one end in the longitudinal direction, and is formed of the inner case main body 10 and the inner case upper plate 11 described above. The inner case is stored. The upper plate body 8a and the lower plate body 8b of the outer case body 8 have an insertion through hole 11a of the inner case upper plate 11 and an insertion through hole 10a6 of the inner case body 10. ), An insertion through hole (upper fitting hole) 8a1 and an insertion through hole (lower fitting hole) 8b1 are respectively provided in the form corresponding to (). However, the insertion through hole 8a1 is provided in FIG. Is shown only), the guide groove (8a2) and the guide groove (8b2) in the form corresponding to the guide groove (11d) of the inner case upper plate body 11 and the guide groove (10a5) of the inner case body (10) Each is provided (however, only the guide groove 8a2 is shown in Fig. 2A). Further, in the vicinity of the guide groove 8a2 and the guide groove 8b2, graduations as shown in Figs. 2 and 3 are engraved in order to facilitate the adjustment of the pressing force of the spring 16, respectively. Furthermore, the cutouts 8a3 and 8a4 are spaced apart at the end of the long side of the upper plate body 8a positioned in the opening of the outer case main body 8, and the lower plate located in the opening of the outer case main body 8 at predetermined intervals. The notches 8b3 and 8b4 are provided in the long side edge part of the sieve 8b with predetermined space | interval, These notches 8a3 and 8b3 have these notches 8a4 and 8b4. Are installed in the form of facing each other. Moreover, the form corresponding to this operation hole 10c2 to the side plate 8c of the outer case main body 8 which is facing the side plate 10c of the inner case main body 10 in which the operation hole 10c2 was provided. The circular operation hole 8c1 is provided. In addition, the two holes provided in the upper plate body 8a and the lower plate body 8b are bolts for attaching the apparatus body 6 including the outer case body 8 and the like to the upper frame member 2. It is a hole.

The outer case side plate body 9 is a rectangular, thin, flat plate-shaped member which is assembled as a plate body on the outer case body 8 side, and is provided on the outer case body 8 at both long side ends of the rear face of the outer case side plate body 9. The locking projections 9a1 and 9a2 protrude and are installed corresponding to the cutout portions 8a3 and 8a4 of the < RTI ID = 0.0 >), and the locking projections 9a3 and 9a4 < / RTI > The case 70 as shown in FIG. 2 (B) can be assembled by protrudingly provided and engaging these locking projections 9a1 and the like with the cutouts 8a3 and the like. In this way, the case 70 is assembled by connecting the pivoting piece 14 in the case 70 and the door closing arm 20 outside the case 70 with the mounting bolt 29 as described above. Assembly of the main body 6 is completed (refer FIG. 3).

Next, the guide member 7 according to the present embodiment will be described with reference to FIGS. 1, 6, and 7.

The guide member 7 has a supporting portion 30 which is substantially isosceles triangular in appearance in plan view, and a portion corresponding to the bottom side of the isosceles triangle is attached to the door A, while this isosceles triangle In the insertion hole (not shown) provided near the vertex of the image, an elongated cylindrical slide 31 having a stop ring 32 attached to the lowermost end thereof is inserted in a movable manner. When the external force is not acting on the sliding member 31, the sliding member 31 has the upper end portion of the block member 30 due to the pressing force of a spring (not shown) interposed in the insertion hole. Protrudes from the upper surface 30a, the stop ring 32 is in a state of being caught by the lower surface 30b of the block member 30, but when an external force acts on the sliding member 31, the sliding member 31 is applied. ) Is pressed down in response to the pressing force of the spring, and the latching of the stop ring 32 is released (see FIG. 7).

Next, an operation method of the door closing device 1 will be described with reference to FIGS. 4 to 6.

First, the outline | summary of the operation | movement of this door closing device 1 is demonstrated with reference to FIG.

When the door A is open in a state in which the device main body 6 and the guide member 7 as shown in FIG. 1 are not engaged, the door closing arm 20 of the device main body 6 is guided. The member 7 is held at an angular position corresponding to a predetermined closing angle that can be engaged with the sliding member 31. When the door is closed by holding the handle of the door A from this state, the door A is immediately before the closing operation of the door closing device 1, that is, the position as shown in FIG. In the form, when it reaches to the angular position of about 15 degrees in the same figure, the sliding member 31 starts to engage with the guide groove 27c of the door closing arm 20, and after that, the sliding member 31 is carried out. In synchronism with the relative movement along the guide groove 27c of the door closing arm 20, the door A is forcibly closed and quietly closed even if a large closing speed is given, as described later. 6B. Conversely, when opening the door A from the state of FIG. 6B through the state of FIG. 6A, the handle of the door A may be gripped to release the latch, and then a force may be applied to the handle. At this time, as described above, the installation position of the apparatus main body 6 and the guide member 7 enables opening of the door A without increasing the force applied to the handle of the door A, further described later. As described above, the force applied to the handle of the door A can be reduced by the action of encouraging the rotation of the door closing arm 20 of the damper 19.

Next, the structure which enables the operation | movement shown in FIG. 6 mentioned above of the door closing device 1 is demonstrated with reference to FIG. 4 and FIG. 4 and 5, the door A and the guide member 7 are not shown.

4 (A) shows a state immediately before the closing operation of the door closing device 1 as in FIG. 6 (A), and the door closing arm 20 of the device main body 6 is the guide member 7. The state which is maintained at the angular position corresponding to the predetermined | prescribed closing angle which can be engaged with the slide 31 of () is shown. At this time, the rotating piece 14, the small rotor 23 of the rotating piece 14 abuts the slider 15 on the inclined surface 15a2 side of the slider 15, and the spring (15) through the slider 15 16, while receiving the moment in the clockwise direction in FIG. 4 (A), the second arm portion 14b of the pivoting piece 14 fits the tip end surface 12b1 of the left fixing block 12. As shown in FIG. The door closing arm 20 is held at an angular position corresponding to the predetermined closing angle because it receives the moment in the counterclockwise rotation direction from the left fixing block 12. On the other hand, in this embodiment, the damper 19 is set so that a force does not apply to the 2nd arm part 14b through the slider 18. FIG.

And when the force is applied to the door A to start the closing operation | movement to the door closing device 1 from the state of FIG. 4 (A), the rotating piece 14 will rotate the small rotor 23 of the said rotating piece 14; Is beyond the apex 15a1 of the slider 15 to be in contact with the slider 15 on the inclined surface 15a3, that is, in the state of FIG. When it is in this state, the rotating piece 14 can be adjusted by the elastic repulsive force of the spring 16 provided through the slider 15 (this elastic repulsive force can be adjusted suitably by the adjustment means 17). Since the moment in the counterclockwise rotation (the arrow direction A1 in the drawing) is received in FIG. 4 (B), the door closing arm 20 also has the moment in the counterclockwise rotation (the arrow direction A2 in the drawing). The door A is closed more automatically by this. At this time, the damper 19 makes the side surface 18a of the 2nd slider 18 abut on the 2nd arm part 14b of the rotation piece 14, and the rotation piece 14 through the 2nd slider 18. As shown in FIG. ), The rotational speed in the counterclockwise rotation direction of the rotating piece 14 is suppressed and decelerated. By the way, when the rotation piece 14 rotates and reaches the state of FIG. 5 (A), that is, the latch provided in the handle of the door A is attached to the vertical frame member 3 with the closing of the door A. When the point of insertion into the latch hole is reached, the rotating piece 14 continues to receive the moment in the counterclockwise rotation direction by the pressing force of the spring 16 as described above until the state of Fig. 5B is reached. The door closing arm 20 also receives the moment in the counterclockwise direction by this, but the part to be brought into contact with the slider 18 of the second arm portion 14b of the pivoting piece 14 is the slider. Since it is moved toward the inclined surface 18a1 of (18), the resistance force from the damper 19 does not act on this rotating piece 14 via the said slider 18. As shown in FIG. As a result, only the moment in the counterclockwise rotation direction by the spring 16 acts on the pivoting piece 14, thereby ensuring the insertion of the latch into the latch hole of the door A, thereby obtaining a securely closed state. Can be.

When it is in FIG.5 (B) state, the rotating piece 14 receives the moment of anticlockwise rotation direction in FIG.5 (B) as mentioned above, while the 1st arm part of the said rotating piece 14 ( 14a) abuts against the inclined surface 12a1 of the left fixing block 12, and receives a moment in a clockwise rotation direction from the left fixing block 12 to be balanced, so that the closed state of the door A is maintained.

When opening the door A from the state of FIG. ), A force resisting the pressing force of the spring 16 provided through the slider 15 (this pressing force can be appropriately adjusted by the adjusting means 17). As described above, the force applied at this time can be reduced in the door closing device 1 employing the installation positions of the apparatus main body 6 and the guide member 7 as described above, and the damper 19 is a slider. Abutting the second arm portion 14b of the pivoting piece 14 via 18, the moment in the clockwise direction (arrow direction B1 in the drawing) in FIG. The door closing arm 20 is also given a moment in the clockwise rotation direction (arrow direction B2 in the figure). As a result, the rotation of the door closing arm 20 in the clockwise rotation is encouraged, so that the force applied to the door A can be further reduced.

In addition, when the opening operation of the door A progresses and the engagement between the door closing arm 20 of the apparatus main body 6 and the sliding member 31 of the guide member 7 is released, the door closing arm 20 is released. Is of course maintained at an angular position corresponding to a predetermined closing angle that allows engagement with the slider 31.

Next, with reference to FIG. 7, with respect to the door closing arm 20 of the apparatus main body 6 hold | maintained at the angle position corresponding to the said predetermined closing angle, the said angle position may change for some reason. In this case, a method of returning the door closing arm 20 to the angular position will be described.

In this door closing device 1, even if the angular position is changed, as shown in Fig. 7A, the door A is rotated in the direction of closing the door A (indicated by the arrow in the drawing), that is, avoided. The guide member 7 is brought close to the apparatus main body 6 to bring the sliding member 31 of the guide member 7 into contact with the inclined surface 27d of the door closing arm 20 and further with the door in contact. When (A) is rotated in the direction of the arrow, as shown in FIG. 7B, the sliding member 31 protruding from the surface 30a of the block member 30 is removed from the door closing arm 20. It is pressed against the force of the spring attached to the guide member 7 by the force of, and the lower part of the sliding member 31 protrudes from the lower surface 30b of the block member 30 as much as it is pressed. . Then, if the door A is continuously rotated in the direction of the arrow while maintaining this contact state, as shown in Fig. 7C, the sliding member 31 is inclined surface of the door closing arm 20 ( The door closing arm 20 and the sliding member 31 are engaged with each other by being inserted into the guide groove 27c through the horizontal surface portion from 27d. In connection with this, the stop ring 32 hangs on the lower surface 30b of the block member 30.

In this manner, once the sliding member 31 is engaged with the guide groove 27c of the door closing arm 20 and the door A is opened, the opening operation proceeds through the above-described state of FIG. 7C. do. Then, after the engagement between the door closing arm 20 and the sliding member 31 is released, the door closing arm 20 corresponds to a predetermined closing angle at which the door closing arm 20 can be engaged with the sliding member 31. The door closing arm 20 is returned to the angular position.

By the way, about the door A for right opening like this embodiment, the door closing arm 20 is attached to the lower board body 8b side of the outer case main body 8 of the apparatus main body 6 through the mounting base 28a. Although the door closing device 1 is equipped with the door closing arm 20, the top plate body 8a of the outer case body 8 of the device main body 6 is used for the door for the left opening. It can respond by attaching to the side via the mounting base 28a of the said door closing arm 20. Specifically, in the door closing arm 20, the large diameter fitting shaft 28a1 of the mounting table 28a is inserted into the insertion through hole 8a1 of the outer case main body 8, and the small diameter of the mounting table 28a. The fitting shaft 28a2 is connected to the bearing ring 21b of the inner case upper plate 11, and the connecting shaft 28a3 of the mounting table 28a is connected to the small shaft portion 14c1 of the shaft portion 14c of the pivoting piece 14. And loosely insert the mounting bolts 29 into the square holes of the fitting holes, and then the fitting shafts 28a1 and 28a2 of the mounting base 28a and the connecting shaft from the upper bottom surface 27 side of the door closing arm 20. It can respond by screwing into the screw hole of 28a3. Therefore, the door closing device 1 can be used for both the right open door and the left open door, which is convenient for use in installation work.

[Industry availability]

The door closing device of the present invention aims to make the main body of the apparatus compact by using the shock absorbing device attached to the main body of the apparatus to be of a linear type. Therefore, the door closing device has a device structure that can be installed in a narrow space of the door frame. In addition, the shock absorber acts to slow down the closing speed of the door when the door is closed and to close it quietly, while helping to open the door when the door is opened, so that the door can be opened without applying great force to the handle of the door. In view of the device structure, it can be said that it is widely and generally usable as this kind of device.

1 is a view showing an installation state of a door closing device according to an embodiment of the present invention,

2 (A) is an exploded perspective view of the device body of the door closing device of Figure 1, (B) is a perspective view of the device body of the door closing device of Figure 1,

3 is a perspective view from below of the apparatus body of FIG. 1;

4 is an explanatory view of the operation of the door closing device of FIG. 1 seen from above;

5 is an operation explanatory view of the operation of the door closing device of FIG.

6 is an operation explanatory view of the operation of the door closing device of FIG. 1 seen from below;

7 is an explanatory view of a return operation of the door closing device of FIG. 1;

8 is a view showing an installation state of a conventional door closing device, and

9 is an explanatory view of the operation of the door closing device of FIG. 8.

[Description of the code]

A: Door 1: Door Closer

5: hinge 6: device body

7: guide member 8a1: insertion hole

8b: bottom plate 10a: bottom plate

10a6: Insertion hole 14: Rotating piece

14a: 1st arm part 14b: 2nd arm part

14c: shaft portion 16: spring

17: adjusting means 19: damper

20: door closing arm 27c: guide groove

28a3: connecting shaft 30: support part

31: Slider 40: Fixed Element

50: pressure mechanism 60: buffer mechanism

70: case

Claims (15)

As the door closing device (1) for forcibly closing the door (A) connected to the door frame in a horizontal direction through a hinge (5), An apparatus body 6 attached to the door frame, It has a guide member 7 fixed to the door A, The apparatus main body 6, A fixing element 40 fixed to an upper edge of the door frame opening, A shaft portion 14c rotatably supported in the horizontal direction by the fixing element 40 and first and second arms protruding from the shaft portion 14c in different directions outside the horizontal direction. A rotating piece 14 having parts 14a and 14b, A door closing arm 20 configured to rotate horizontally with the pivoting piece 14 and to be engaged or disengaged with the guide member 7 with the rotation of the door A; When the guide member 7 is not engaged with the door closing arm 20, the door closing arm 20 can be held in a waiting position waiting for engagement with the guide member 7. After the member 7 is engaged with the door closing arm 20, the door closing arm 20 can be forcibly rotated in the direction of closing the door A. A pressurizing mechanism 50 that exerts an elastic force on the 1 arm portion 14a, When the door closing arm 20 rotates in the direction of closing the door A, the rotation can be suppressed, and when the door closing arm 20 rotates in the opposite direction, the rotation is performed. The door closing device characterized by having a direct-acting shock absorbing mechanism (60) which exerts a force on the 2nd arm part (14b) of the said rotating piece (14) so that it may promote. The method according to claim 1, The fixing element 40 has a case 70 of a flat rectangular parallelepiped fixed to the door frame, The pivoting piece 14, the pressurizing mechanism 50, and the shock absorbing mechanism 60 are housed together in the case 70, Insertion through holes 8a1 and 10a6 for connecting the connecting shaft 28a3 of the door closing arm 20 to the shaft portion 14c of the pivoting piece 14 on the bottom plates 8b and 10a of the case 70. ) Is formed, The door closing device, characterized in that configured to rotate the door closing arm (20) along the lower surface of the case (70). The method according to claim 2, The pressing mechanism 50 has a spring 16 that exerts an elastic force on the first arm portion 14a of the pivoting piece 14, When the door closing arm 20 rotates in the direction of closing the door A, the shock absorbing mechanism 60 accompanies the rotation of the second arm portion 14b of the rotating piece 14. It has a linear damper (19) for generating a braking force by repulsing compressed in the horizontal direction, The door closing device, characterized in that the spring (16) and the damper (19) are installed side by side parallel to each other. The method according to claim 3, The device main body (1) has an adjusting means (17) for adjusting the elastic force of the pressing mechanism (50). The method according to claim 2, When the door A is closed, the door closing arm 20 is entirely below the lower surface of the case 70. When the door closing arm 20 is in the standby position, the front end side of the door closing arm 20 is located in the case 70. A door closing device, characterized in that it extends toward the door A from below the bottom surface. The method according to claim 5, The guide member 7 includes a support part 30 fixedly attached to the plate surface of the door A and a sliding member protruding upward from the distal end of the support part 30. Has 31, The door closing arm 20 has a guide groove 27c extending in the rotational radial direction thereof, When the door closing arm 20 is in the stand-by position, the tip end of the sliding member 31 is accommodated in the guide groove 27c with the rotation in the direction in which the door A is closed. Door closure. The method according to any one of claims 1 to 6, The shock absorbing mechanism 60, When closing the door A, from the time when the latch provided on the end surface of the side where the handle of the door A is installed begins to be inserted into the latch hole provided in the door frame, the pivoting piece 14 The door closing device, characterized in that the force to suppress the rotation does not act on the second arm portion (14b) of. A door device having a door frame, a door A connected to the door frame in a horizontal direction through a hinge 5 and a door closing device 1 forcibly closing the door A, The door closing device 1, An apparatus body 6 attached to the door frame, It has a guide member 7 fixed to the door A, The apparatus main body 6, A fixing element 40 fixed to an upper edge of the door frame opening, A shaft portion 14c rotatably supported in the horizontal direction by the fixing element 40 and first and second arms protruding from the shaft portion 14c in different directions outside the horizontal direction. A rotating piece 14 having parts 14a and 14b, A door closing arm 20 configured to rotate horizontally with the pivoting piece 14 and to be engaged or disengaged with the guide member 7 with the rotation of the door A; When the guide member 7 is not engaged with the door closing arm 20, the door closing arm 20 can be held in a waiting position waiting for engagement with the guide member 7. After the member 7 is engaged with the door closing arm 20, the door closing arm 20 can be forcibly rotated in the direction of closing the door A. A pressurizing mechanism 50 that exerts an elastic force on the 1 arm portion 14a, When the door closing arm 20 rotates in the direction of closing the door A, the rotation can be suppressed, and when the door closing arm 20 rotates in the opposite direction, the rotation is performed. The door apparatus characterized by having a direct-acting shock absorbing mechanism (60) which exerts a force on the 2nd arm part (14b) of the said rotating piece (14) so that it may promote. The method according to claim 8, And the fixing element (40) is fixedly attached to an end opposite to the side to which the hinge of the upper frame member constituting the door frame is attached. The method according to claim 8 or 9, The fixing element 40 has a case 70 of a flat rectangular parallelepiped fixed to the door frame, The pivoting piece 14, the pressurizing mechanism 50, and the shock absorbing mechanism 60 are housed together in the case 70, Insertion through holes 8a1 and 10a6 for connecting the connecting shaft 28a3 of the door closing arm 20 to the shaft portion 14c of the pivoting piece 14 on the bottom plates 8b and 10a of the case 70. ) Is formed, The door device, characterized in that configured to rotate the door closing arm (20) along the lower surface of the case (70). The method according to claim 10, The pressing mechanism 50 has a spring 16 that exerts an elastic force on the first arm portion 14a of the pivoting piece 14, The said shock absorbing mechanism 60 accompanies rotation of the 2nd arm part 14b of the said rotating piece 14, when the said door closing arm 20 is rotating in the direction which closes the said door A. As shown in FIG. Has a linear damper (19) for generating a braking force by repulsion is compressed in the horizontal direction, The door device, characterized in that the spring (16) and the damper (19) are installed side by side parallel to each other. The method according to claim 11, The device main body (1) has an adjustment means (17) for adjusting the elastic force of the pressing mechanism (50). The method according to claim 8, When the door A is closed, the door closing arm 20 is entirely below the lower surface of the case 70. When the door closing arm 20 is in the standby position, the front end side of the door closing arm 20 is located in the case 70. A door device, characterized in that extends out from below the bottom surface toward the door (A). The method according to claim 12, The guide member 7 has a support part 30 fixedly attached to the plate surface of the door A and a sliding member 31 protruding upward from the distal end of the support part 30, The door closing arm 20 has a guide groove 27c extending in the rotational radial direction thereof, When the door closing arm 20 is in the stand-by position, the tip end of the sliding member 31 is accommodated in the guide groove 27c with the rotation in the direction in which the door A is closed. Door device. The method according to any one of claims 11 to 14, The shock absorbing mechanism 60, When closing the door A, from the time when the latch provided on the end surface of the side where the handle of the door A is installed is inserted into the latch hole provided in the door frame, The door device characterized by the above-mentioned so that the force which suppresses the rotation does not act on 2 arm parts (14b).

Images