JP4988639B2 - Latch device and joinery - Google Patents

Description

  The present invention relates to a latch device and a fitting including the latch device.

Conventionally, a latch device used for a bathroom door or the like is known (for example, see Patent Document 1).
The one described in Patent Document 1 includes a housing, a notch shaft pivotally supported on the front and rear walls of the housing, a stopper and a notch portion that are pivotally attached to a rear end portion of the notch shaft and adjust a protruding length of the notch portion. And a coil spring that can be moved forward and backward in front of the housing.

The latch device described in Patent Literature 1 is assembled by the following procedure. That is, after inserting the sheath tube of the stopper from the rear of the through hole in the rear wall of the housing, the coil spring is inserted into the rear end portion of the notch shaft and inserted from the front side of the through hole in the front wall of the housing. Insert the male screw on the shaft into the sheath tube of the stopper. Then, the coil spring is fitted to the outer peripheral surface of the sheath tube, pushed backward, the male screw part is aligned with the screw hole of the stopper, and the stopper is rotated, so that the coil spring is moved to the rear surface of the housing rear wall and the front end of the notch shaft. Assembled in pressure contact with the rear surface.
Furthermore, the latch device is configured so that the protruding length of the notch from the housing can be adjusted by pushing the notch into the housing with a screwdriver, rotating the notch shaft to the left and right, and moving the male screw in the longitudinal direction of the stopper. Has been.

Japanese Utility Model Publication No. 57-60622

  However, in the latch device described in Patent Document 1, if the amount of protrusion of the notch portion (latch member) is changed, the amount of contraction of the coil spring also changes. For this reason, even if the pushing amount of the latch member is constant, the amount of contraction of the coil spring is different, the repulsive force of the coil spring, that is, the urging force against the latch member is different, and there is a problem that the operability varies. .

  The object of the present invention relates to a latch device capable of making the urging force to the latch member constant regardless of the change state of the protruding amount of the latch member, and a fitting including the latch device.

A latch device according to the present invention includes a latch body provided on one of a frame body and a face member supported by the frame body so as to be freely opened and closed, and a receiving portion provided on the other. A latch device for restricting the face material to a closed position by engaging with a receiving portion, wherein the latch body is fixed to the one side and has a base hole and a base member projecting from the base hole. A latch member supported by the base member so as to be freely immersed, a coil spring that urges the latch member in a direction to project from the base hole, and a protrusion amount of the latch member from the base hole are changed to receive the receiving member. An adjustment means capable of adjusting a hanging dimension with respect to the portion, a substantially cylindrical accommodation portion provided on a peripheral edge of the base hole for accommodating the latch member, the coil spring, and the adjustment means, and the adjustment means. In contact with the rack Is configured to include an adjustment means movement restricting member for restricting the movement of the projecting direction of the member, said adjustment means, nut and the bolt head has a bolt shaft and bolt head screwed into this nut the A bolt fixed to the latch member, the adjustment means movement restricting member includes a substantially U-shaped plate-like movement restricting main body, and the accommodating portion is a cylindrical shape provided in series at the periphery of the base hole. A latch member accommodating portion that accommodates the latch member, and a cylindrical shape provided in series on the latch member accommodating portion, and the nut is disposed in the cylindrical axial direction while restricting rotation of the nut. A nut accommodating portion that is movably accommodated, a spring receiving plate portion that closes an opening of the nut accommodating portion, and a connecting portion between the latch member accommodating portion and the nut accommodating portion, and the adjustment means movement restriction Detachable And the coil spring is disposed between the nut and the spring receiving plate portion in the nut housing portion, and the insertion portion has a substantially concentric portion of the movement restricting main body portion. The adjusting means movement restricting member is inserted so that the bolt shaft is inserted into the inside of the letter shape, and the movement restricting main body is in contact with the nut and restricts the nut from moving toward the base hole. It is characterized by being.

Here, as the base member, a substantially box-shaped member whose entire surface is closed, a substantially cylindrical member provided with an opening other than the base hole, and the like can be applied. As the latch member, the outer shape is spherical, hemispherical, Ru can be applied, such as polygonal columns ones.

According to the present invention described above, the adjusting means is provided between the latch member and the coil spring , so that the amount of protrusion of the latch member is changed to adjust the hanging dimension without changing the biasing state of the coil spring . be able to. Therefore, even if the protrusion amount of the latch member is different, if the pushing amount of the latch member is constant, the urging state of the coil spring can be made the same, so that the urging force against the latch member can be made constant. , Ru can be constant even operability.
Moreover, after accommodating the adjustment means attached to the latch member in the accommodating portion together with the coil spring, the latch device can be easily assembled by attaching the adjustment means movement restriction member and restricting the movement of the adjustment means.

Furthermore, in the latch device of the present invention, it is preferable that a rotation restricting means for restricting the rotation of the latch member is provided between the latch member accommodating portion and the latch member.
Here, in the case of the configuration in which the above-described rotation restricting means is not provided, for example, the latch member may be rotated due to vibration at the time of opening and closing the face material, and the protrusion amount may be changed against the user's will.
On the other hand, according to the present invention, since the latch member does not rotate due to vibration, it is possible to prevent the problem that the projection amount changes and the receiving portion and the hanging dimension change against the user's will. .

In the latch device of the present invention, a pressing means that presses the latch member in a direction intersecting the protruding and retracting direction and presses the latch member against the latch member accommodating portion is provided between the latch member accommodating portion and the latch member. configuration there are not preferred.
According to the configuration like this, the rattling of the latch member during opening and closing plate member can be prevented since pressing the latch member by the pressing means on the latch member accommodating portion.

In the latch device of the present invention, one of the inner peripheral surface facing the outer peripheral surface of the latch member and the outer peripheral surface of the latch member in the latch member accommodating portion is provided with a protruding portion that protrudes toward the other. The other is provided with a groove that engages with the protrusion and is slidable in the protruding and retracting direction, and the protrusion or the groove is substantially along the protruding direction of the protruding portion. The latch member is provided in the latch member accommodating portion or the latch member via an elastically deformable elastic portion, and the protrusion and the groove constitute a rotation restricting means for restricting the rotation of the latch member by engagement thereof. And the said press means is comprised by the said protrusion part, the said groove part, and the said elastic part, and the structure by which the said latch member is pressed against the said latch member accommodating part with the reaction force of the elastic deformation of the said elastic part is preferable.
According to the present invention, the structure of the latch device can be simplified by causing the protrusion and the groove to function as rotation restricting means and pressing means. Furthermore, even if the latch member is not pushed in as in the conventional case, the latch member is rotated by an operating force that elastically deforms the elastic portion and disengages the protrusion from the groove, thereby changing the protrusion amount. Can do.

Also, in the latch device of the present invention, the latch member is a damper means for applying a force between the biasing force in the opposite direction of the coil spring relative to said latch member is provided when it is energized by the coil spring The configuration is preferable.
Here, as the damper means, an air damper that applies a force in a direction opposite to the biasing force of the coil spring (hereinafter referred to as a damper force) by adjusting the air flow in and out, and a damper force that uses highly viscous oil An oil damper that works can be applied.
According to the present invention, since the damper member exerts a damper force on the latch member, the speed at which the latch member protrudes and engages the receiving portion (hereinafter referred to as the protrusion speed) can be reduced. The collision sound with the receiving part can be reduced.

Furthermore, the latch device of the present invention, the outer peripheral surface of the front SL latch member, said latch member accommodating portion through the elastically deformable elastic portion in the direction of advance and retreat with respect to the inner peripheral surface of the latch member accommodating portion A protruding portion that protrudes toward the inner peripheral surface is provided, and a groove portion that engages with the protruding portion and that can slide in the protruding and retracting direction is provided on the inner peripheral surface of the latch member housing portion. One of the outer peripheral surface of the latch member and the inner peripheral surface of the latch member accommodating portion is provided with a base-latch slidable contact member arranged in a series along the circumferential direction and slidably in contact with the other, The projecting portion and the groove portion constitute the rotation restricting means for restricting the rotation of the latch member by their engagement, and the latch member housing portion , the groove portion, and the sliding contact member between the base latches are the latch wherein in the member accommodating portion baseline By than Ji between the sliding member for adjusting the pressure of the closing surface side space of the closed surface in and out of air through the groove, the latch member when said latch member is biased by the coil spring On the other hand, the structure which comprises the damper means to which the force to the direction opposite to the urging | biasing force of the said coil spring is comprised is preferable.
Here, if the sliding contact member between the base latches is formed in a substantially ring shape with an elastically deformable material such as a resin material, even if there is a tolerance of the sliding contact member between the base latches, the latch member receiving portion or the latch member, The inter-latch slidable contact member can be slidably contacted with the latch member accommodating portion , and further, the base-latch slidable contact member can be easily attached to the latch member by elastic deformation. Note that the base latch inter-sliding contact member may be provided on the latch member, or may be provided on the latch member accommodating portion . Alternatively, the latch member accommodating portion and the latch member may be shaped such that a slight gap is formed between them, and oil having high viscosity may be applied to the gap as a sliding contact member between the base latches.
According to this invention, the damper force is applied to the latch member by the damper means, so that the collision noise between the latch member and the receiving portion can be reduced by the above-described action. In addition, by making the groove functioning as the rotation restricting means function as a means for adjusting the pressure in the closed surface side space in the latch member accommodating portion , there is no need to provide a hole or the like having only a pressure adjusting function. The configuration can be simplified.

The joinery of the present invention is characterized by including a face member supported by the frame body so as to be freely opened and closed, and the latch device described above.
In the joinery of the present invention, it is preferable that the face material is a door that is rotatably supported by the frame.
According to the inventions as described above, it is possible to provide a joinery having the same effects as the above-described latch device.

A first embodiment of the present invention will be described below with reference to the drawings. In the first embodiment and the second embodiment to be described later, a door as a fitting installed in a bathroom will be exemplified and described.
FIG. 1 is a longitudinal sectional view showing a door 1 according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view showing the door 1.
1 and 2, a door 1 as a fitting is provided in a building (not shown) and is fixed to a bathroom entrance and door 20 as a face member supported by the frame 10 so as to be opened and closed. And.
The frame 10 includes an upper frame 11, a lower frame 12, and left and right vertical frames 13. Hinges 14 are provided at a plurality of locations on one (left side in FIG. 2) vertical frame 13.
The door body 20 is rotatably supported on the frame body 10 via a hinge 14 and is opened and closed on the bathroom side around the rotation axis of the hinge 14. Further, the door body 20 includes a door upper frame 21, a door lower frame 22, and left and right door vertical frames 23 each having a four-frame framework, and a panel 24 that closes an opening portion defined by each of the frames 21 to 23. Yes.
The door 1 includes a receiving portion 31 provided on the frame body 10 and a latch main body 35 provided on the door body 20, and the latch main body 35 engages with the receiving portion 31, thereby A latch device 30 that restricts the position to the closed position is provided.
The receiving portion 31 includes a receiving body portion 32 that is spherically recessed on the inner surface side of the other (right side in FIG. 2) vertical frame 13. The depth dimension, that is, the hanging dimension of the receiving body portion 32 is set to K mm (K millimeter: hereinafter, “mm” means millimeter).
As shown in FIG. 2, the latch body 35 includes a base member 40, a latch member 60, a coil spring 80 as an urging unit, and an adjusting unit 90.

Next, the configuration of the latch body 35 will be described in detail with reference to FIGS.
FIG. 3 is a cross-sectional view of the latch body 35 as viewed from the upper side of the door body 20. FIG. 4 is a longitudinal sectional view of the latch body 35 as seen from the bathroom side, and is a sectional view taken along line IV-IV in FIG. FIG. 5 is a longitudinal sectional view as seen from the rotation center side of the door body 20 showing the latch main body 35, and is a sectional view taken along line VV in FIG.
The adjusting means 90 includes a polygonal plate-like nut 91 and a bolt 94 having a bolt shaft 92 and a polygonal plate-like bolt head 93 that are screwed into the nut 91.

The base member 40 includes a substantially rectangular plate-like base attachment portion 41 attached to the door vertical frame 23. A round base hole 42 is formed in the approximate center of the base mounting portion 41. Further, insertion holes 43 through which attachment members (not shown) are inserted are provided at both ends in the longitudinal direction of the base attachment portion 41. Further, a base outer cylinder portion 44 having a substantially U-shaped cross section with an opening on the bathroom side is provided at the periphery of the base hole 42 on the surface of the base mounting portion 41 that does not face the receiving portion 31.
On the inner peripheral surface of the base outer cylinder portion 44 on the dressing room side, a rotation restricting means having an arcuate cross section extending along the extending direction of the base outer cylinder portion 44 from the surface facing the receiving portion 31 of the base mounting portion 41. And the groove part 45 as a press means is provided. A spring receiving plate portion 46 is provided at the front end of the base outer tube portion 44 in the extending direction so as to face the base hole 42.
Further, a base inner cylinder portion 47 having a substantially C-shaped cross section with an opening on the bathroom side is provided on the surface of the spring receiving plate portion 46 on the base hole 42 side. The base inner cylinder portion 47 regulates the rotation of the bolt 94, and the axial direction of the bolt 94 until the bolt head 92 side surface (axis side contact surface) 95 of the bolt head 93 contacts the base inner cylinder portion 47. Support to move. A coil spring 80 is disposed between a surface (spring contact surface) 96 opposite to the shaft side contact surface 95 of the bolt head 93 of the bolt 94 and the spring receiving plate portion 46.

The latch member 60 includes a substantially hemispherical hemispherical portion and a substantially cylindrical cylindrical portion, the diameter of which is set to be slightly smaller than the diameter of the base hole 42, and is configured to protrude and retract from the base hole 42. Has been. A driver groove 61 is provided at the apex of the hemispherical portion. The latch member 60 is provided with a bolt shaft insertion portion 62 into which the bolt shaft 92 is inserted. The bolt shaft insertion portion 62 is formed in a groove shape having a substantially U-shaped cross section that extends from the hemispherical portion to the flat surface of the cylindrical portion and opens radially outward. Further, a nut fitting portion 63 into which the nut 91 is fitted so as not to rotate is provided in a part of the bolt shaft insertion portion 62. Further, an arc groove portion 64 having a substantially arc-shaped cross section that opens to the outside is provided in a portion from a part of the outer peripheral edge of the flat surface of the latch member 60 to the cylindrical portion. The arc groove 64 is provided at a position where the angle formed by the arc-shaped opening and the substantially U-shaped opening of the bolt shaft insertion portion 62 is approximately 90 °. In addition, an elastic portion 65 as an elastically deformable pressing means that extends along the axial direction from the cylindrical portion is provided inside the circular arc groove portion 64. At the front end of the elastic portion 65 in the extending direction, a rotation restricting means that protrudes substantially hemispherically toward the radially outer side of the cylindrical portion and engages with the groove 45 of the base member 40 and a protruding portion 66 as a pressing means are provided. ing. When the protrusion 66 is engaged with the groove 45, the elastic portion 65 is elastically deformed toward the axial side of the cylindrical portion, and the latch member 60 is pressed in a direction away from the groove 45 by the reaction force of this elastic deformation. The groove 48 is pressed against the groove facing surface 48 of the base hole 42.
Further, a wall portion 67 protruding in a substantially vertical direction is provided in a substantially C-shaped portion along the outer peripheral edge of the flat surface. And the front-end | tip of the base inner cylinder part 47 of the base member 40 is inserted in the volt | bolt bearing part insertion area | region 68 formed substantially by this wall part 67 and a flat surface.

Next, an example of the assembly operation of the latch body 35 will be described.
First, after the bolt 94 is installed in a state where the bolt head 93 is positioned in the base inner cylinder portion 47 of the base member 40, the coil spring 80 is inserted between the spring contact surface 96 of the bolt 94 and the spring receiving plate portion 46. Install. Further, the nut 91 is fitted into the nut fitting portion 63 of the latch member 60. Then, after inserting the latch member 60 into the base hole 42 of the base member 40, the latch member 60 is rotated by the operation of the driver engaged with the driver groove 61, and the nut 91 is screwed onto the bolt shaft 92 of the bolt 94. Combine. That is, the adjusting means 90 is provided between the latch member 60 and the coil spring 80. By adjusting the screwed state, the latch member 60 can move forward and backward with respect to the base hole 42 to change the protruding amount of the latch member 60. Further, at the time of this screwing, the protrusion 66 of the latch member 60 engages with the groove 45 of the base member 40 every time the latch member 60 is rotated once (rotated 360 °). Rotation is regulated. Thus, the assembly of the latch body 35 is completed.

Next, the attachment operation | movement to the door body 20 of the latch apparatus 30 is demonstrated.
First, for example, the receiving part 31 is attached to the vertical frame 13. Further, the base outer cylinder portion 44 of the base member 40 of the latch main body 35 is positioned in the door vertical frame 23 of the door body 20, and the attachment member inserted into the insertion hole 43 of the base attachment portion 41 is attached to the door vertical frame 23. Install. At this time, as shown in FIG. 5, the latch member 60 is pressed against the groove facing surface 48, that is, the bathroom side by the elastic portion 65. After attaching the latch main body 35 to the door body 20, the protrusion amount of the latch member 60 is changed as needed. Thus, the attachment of the latch device 30 to the door body 20 is completed.
Here, when the door body 20 is rotated to close the door 1, the latch device 30 moves in the direction of the arrow F1 (the dressing room side) as shown in FIG. And when the latch member 60 contacts and slides on the receiving portion 31, a force in the direction of the arrow F2 (the bathroom side) opposite to the arrow F1 acts on the latch member 60. At this time, as described above, the latch member 60 is pressed against the bathroom side by the elastic portion 65 and is fixed to the base member 40, so that the door 1 can be closed without rattling the latch member 60. Further, when the door 1 is opened, the latch device 30 moves to the bathroom side of the arrow F2 and the force to the dressing room side of the arrow F1 acts on the latch member 60. However, the elastic member 65 is deformed to deform the latch member 60. Moves gradually with respect to the base member 40, so that the latch member 60 does not rattle.

Next, the protrusion amount changing operation of the latch member 60 will be described in detail with reference to FIGS. The interval between the vertical frame 13 and the door vertical frame 23 when the door 1 is closed will be referred to as a door frame interval.
FIG. 6 is a cross-sectional view of the latch member 60 as viewed from above with the latch member 60 pushed in by the hanging dimension. FIG. 7 is a cross-sectional view of the state when the door frame interval is smaller than the state of FIG. 2 as seen from above. FIG. 8 is a cross-sectional view of the state when the door frame interval is larger than the state of FIG. 2 as seen from above.
For example, as shown in FIG. 2, when the door frame interval is L1 mm, the distance (distance between the latch bolts) between the tip of the hemispherical portion of the latch member 60 and the spring contact surface 96 of the bolt 94 is set to M1 mm. When the latch member 60 is engaged with the receiving portion 31, the shaft side contact surface 95 of the bolt 94 and the base inner cylinder portion 47 are in contact with each other, and the coil spring 80 has a dimension (latch engagement spring dimension). Bmm. When the door 20 is rotated from this state to the bathroom side and the door 1 is opened, as shown in FIG. 6, the latch member 60 moves along the inner surface of the receiving body 32 and enters the base outer cylinder 44. Pushed in. When the latch member 60 moves to the outer edge of the receiving body portion 32, the amount of contraction of the coil spring 80 becomes Kmm, which is equal to the hanging dimension. When the door body 20 further turns to the bathroom side and the latch member 60 moves to the outside of the receiving portion 31, the latch member 60 is urged by an urging force (latch force) corresponding to the amount of contraction of the coil spring 80, and the shaft The side contact surface 95 moves until it comes into contact with the base inner cylinder portion 47.

  Further, for example, when the door frame interval is L2 mm smaller than L1 mm as shown in FIG. 7 due to construction error, the distance between the latch bolts is changed to M2 mm (= M1- (L1- L2)), or when the door frame interval is L3 mm larger than L1 mm as shown in FIG. 8, the latch bolt 60 is changed to increase the protrusion amount and the distance between the latch bolts is set to M3 mm (= M1- ( When set to L1-L3)), the latch engagement spring dimensions are the same Bmm as when the door frame spacing is L1 mm. When the door 1 is opened from the state shown in FIGS. 7 and 8, the coil spring 80 is contracted by Kmm as in the case where the door frame interval shown in FIG. 2 is L1 mm, and the latching force is when the door frame interval is L1 mm. Be the same.

According to such 1st Embodiment, there exist the following effects.
(1) Since the adjustment means 90 is provided as the latch body 35 of the latch device 30 between the latch member 60 and the coil spring 80, the amount of contraction of the coil spring 80 is not changed. The amount of protrusion can be changed. Therefore, as shown in FIGS. 2, 7, and 8, even if the protruding amount of the latch member 60 is different, the amount of contraction of the coil spring 80 when the latch member 60 is pushed by the hooking dimension can be made the same, The latching force, that is, the operating force can be made constant.

  (2) Since the adjusting means 90 includes a nut 91 that is non-rotatably fitted to the latch member 60, and a bolt 94 that is provided on the base member 40 so as not to rotate but to be movable in the axial direction. Even if the latch device 30 is not disassembled or removed from the door body 20 or the frame body 10, the amount of protrusion can be reduced by simply rotating the latch member 60 from the outside in the projecting and retracting direction with the base member 40 fixed. Can change.

  (3) By engaging the protrusion 66 of the latch member 60 with the groove 45 of the base member 40, the rotation of the latch member 60 is restricted. For this reason, for example, the latch member 60 does not rotate due to vibration when the door 1 is opened and closed, and the amount of protrusion changes against the will of the user, and the engagement state between the latch member 60 and the receiving portion 31 changes. It is possible to prevent the problem of end.

  (4) Since the latch member 60 is pressed against the groove facing surface 48 of the base member 40 by urging the protruding portion 66 in the direction of the groove 45 by the reaction force of the elastic deformation of the elastic portion 65, the door 1 is opened and closed. The rattling of the latch member 60 can be prevented.

  (5) Since the protrusion 66 and the groove 45 have the function of restricting the rotation of the latch member 60 and the function of pressing the latch member 60 against the groove facing surface 48, the configuration of the latch member 60 is simplified. Can be achieved. Further, even if the latch member 60 is not pushed in as in the prior art, the latch member 60 is rotated by an operation force that elastically deforms the elastic portion 65 and disengages the protrusion portion 66 and the groove portion 45. The amount can be changed.

  (6) The latch member 60 is pressed against the bathroom side by the elastic portion 65. That is, the latch member 60 is pressed in the direction opposite to the moving direction (the dressing room side) of the door body 20 when the door 1 is closed. For this reason, when the latch member 60 slides with respect to the receiving part 31 when the door 1 is closed and the force to the bathroom side acts on the latch member 60, the door 1 is made without rattling the latch member 60. Can be closed. Furthermore, the latch member 60 is not rattled when the door 1 is opened.

Note that the following configuration may be applied as a modification of the first embodiment.
For example, as the adjusting means of the present invention, for example, a configuration may be applied in which adjustment is performed by press-fitting a rod-shaped member provided in the latch member 60 into a cylindrical member provided in the base member 40.
Furthermore, it is good also as a structure which does not provide the groove part 45, the elastic part 65, and the protrusion part 66, ie, the rotation control means of this invention, and a press means. In such a configuration in which the groove 45, the elastic portion 65, and the protruding portion 66 are not provided, the latch member 60 is configured as a base by sandwiching an elastic member such as a leaf spring or a resin material between the side surface of the latch member 60 and the base member 40. You may press against the side surface by the side of the groove part 45 of the member 40. FIG.
And you may make the protrusion part 66 protrude from the side surface of the latch member 60 not via the elastic part 65, and may provide only a rotation control means. In such a configuration in which only the rotation restricting means is provided, the latch member 60 is sandwiched between the groove member 45 of the base member 40 by sandwiching the elastic member between the side surface of the latch member 60 opposite to the protruding portion 66 and the base member 40. You may press against the side surface.
Furthermore, the rotation restricting means may be configured to use a frictional force such as a resin material. Moreover, it is good also as a structure which presses the latch member 60 not to the bathroom side but to the dressing room side, the ceiling side, or the floor side by a press means.
The receiving portion 31 may be provided on the door body 20 and the latch body 35 may be provided on the frame body 10.

  And it is good also as a latch main body 35A as shown in FIG. The bolt shaft insertion portion 62 of the latch member 60A constituting the latch body 35A is provided with a bolt fitting portion 72 into which the bolt head 93 of the bolt 94 of the adjusting means 90 is fitted so as not to rotate. Further, the nut 91 of the adjusting means 90 is fitted in the base inner cylinder portion 47 of the base member 40 so as not to rotate. A coil spring 80 is provided between the tip of the bolt shaft 92 of the bolt 94 screwed to the nut 91 and the spring receiving plate portion 46 of the base member 40.

Further, as shown in FIGS. 10A and 10B, a latch device 30B may be configured by a receiving portion 31B and a latch main body 35B engaged with the receiving main body portion 32B of the receiving portion 31B. The latch body 35B includes a box-shaped base member 110 having a base hole 111 on one surface, a latch member 120, a coil spring 80, and an adjusting means 90.
A base inner cylinder portion 47 in which the coil spring 80 and the bolt 94 are disposed is provided on the surface of the base member 110 facing the base hole 111.
The latch member 120 includes a latch outer portion 121 having a substantially trapezoidal cross section and a substantially square block shape when viewed from the front, and a cylindrical latch inner portion 125 rotatably disposed in the latch outer portion 121. I have. The latch outer part 121 is provided with a bolt shaft insertion hole 122 and a driver insertion hole 123 that expose the latch inner part 125 to the outside. A nut 91 to which a bolt 94 disposed on the base member 110 is screwed is fitted in the latch inner portion 125 so as not to rotate. The latch inner portion 125 is provided with a bolt shaft insertion portion 126 that allows the bolt shaft 92 to move in the axial direction and a driver groove 61 that is exposed through the driver insertion hole 123. The latch body 35B is provided with a mechanism for immersing the latch outer portion 121 when the door body 20 is opened. As this mechanism, a configuration having a handle (not shown) and an interlocking portion (not shown) for immersing the latch outer portion 121 in conjunction with the handle operation can be exemplified.

Further, as shown in FIGS. 11A and 11B, a latch device 30C may be configured by a receiving portion 31C and a latch main body 35C that engages with the receiving main body portion 32C of the receiving portion 31C. The latch main body 35 </ b> C includes a base member 110, a latch member 140, a coil spring 80, and an adjusting means 150.
In the vicinity of the base hole 111 in the base member 110, a pair of guide portions 112 that are opposed to each other and guide the latch member 140 in a direction to advance and retreat with respect to the receiving portion 31C is provided.
The latch member 140 includes a roller 141 and a pair of roller shaft support portions 142 that rotatably support the roller 141.
The adjusting means 150 includes a rack portion 151 movably provided in the base inner cylinder portion 47, a rack engaging portion 155 that engages with the rack portion 151, and a rack movement restricting portion that restricts the movement of the rack portion 151. 158. The rack portion 151 is formed in a substantially plate-like rack base portion 152 that is urged by abutting against the coil spring 80 in the base inner cylinder portion 47, and a bar shape that protrudes from one surface of the rack base portion 152. And a rack shaft portion 154 provided with rack teeth 153. The rack engagement portion 155 includes an engagement shaft portion 156 that extends in a rod shape from the roller shaft support portion 142 and is elastically deformable, and an engagement projection portion 157 that protrudes from the distal end of the engagement shaft portion 156 and engages with the rack teeth 153. I have. The rack movement restricting portion 158 is provided on the roller shaft support portion 142 so as to face the rack engaging portion 155. A latch restricting member 160 is provided between the rack engaging portion 155 and the guide portion 112 so as to be freely inserted and removed from the base hole 111.

When adjusting the protrusion amount of the latch member 60A in the latch main body 35A shown in FIG. 9, the latch member 60A is rotated, and when adjusting the protrusion amount of the latch member 120 in the latch device 30B shown in FIG. The latch inner part 125 is rotated with respect to the latch outer part 121 to adjust the screwed state of the nut 91 and the bolt 94.
Further, when adjusting the protruding amount of the latch member 140 in the latch device 30C shown in FIG. 11, after the latch restricting member 160 is removed, the engaging shaft portion 156 is elastically deformed while the latch member 140 is moved. The engagement position between the mating protrusion 157 and the rack tooth 153 is changed. Then, the position of the latch member 140 is regulated with respect to the base member 110 by inserting the latch regulating member 160 after the adjustment.
In the latch main body 35A and the latch devices 30B and 30C shown in FIGS. 9 to 11 as well, the adjusting means 90 and 150 are provided between the latch members 60A, 120 and 140 and the coil spring 80, so The same effect can be expected.

Next, 2nd Embodiment of this invention is described based on drawing. In addition, about the structure same as 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted suitably. FIG. 12 is a cross-sectional view showing a door 1D according to the second embodiment of the present invention.
In FIG. 12, the door 1 </ b> D as a fitting is provided with a latch device 30 </ b> D including a receiving portion 31 provided on the frame body 10 and a latch body 35 </ b> D provided on the door body 20. The latch body 35D includes a base member 200, a latch member 220, a coil spring 80, and an adjusting means 90.

Next, the configuration of the latch body 35D will be described in detail with reference to FIGS.
FIG. 13 is a cross-sectional view of the latch body 35 </ b> D as viewed from the upper side of the door body 20. 14 is a longitudinal sectional view of the latch body 35D as seen from the bathroom side, and is a sectional view taken along the line XIV-XIV in FIG. 15 is a vertical cross-sectional view of the door body 20 showing the latch main body 35D as viewed from the rotation center side, and is a cross-sectional view taken along line XV-XV in FIG. 16 is a longitudinal sectional view of the door body 20 showing the latch main body 35D as viewed from the rotation center side, and is a sectional view taken along the line XVI-XVI in FIG.

  As shown in FIGS. 13 and 14, the base member 200 includes a base attachment portion 41 having a base hole 42 and an insertion hole 43. Further, a substantially cylindrical accommodating portion 201 is provided on the periphery of the base hole 42 on the surface of the base mounting portion 41 that does not face the receiving portion 31. The accommodating portion 201 includes a cylindrical cylindrical accommodating portion 202 provided in a series at the periphery of the base hole 42, a hexagonal cylindrical accommodating portion 203 provided in a series in the cylindrical accommodating portion 202, and the hexagonal cylindrical accommodating portion. The spring receiving plate portion 204 that closes the opening of the portion 203 is formed in a substantially cylindrical shape with one end face in the axial direction closed. The inner diameter dimension of the cylindrical housing portion 202 is set to a value equal to the inner diameter dimension of the base hole 42. The inner surface shape of the hexagonal cylinder housing portion 203 is formed in a hexagonal shape slightly larger than the outer peripheral surface shape of the nut 91 of the adjusting means 90.

Moreover, the insertion part 205 in which the nut movement control member 210 as an adjustment means movement control member is detachably inserted from the bathroom side is provided in the connection part of the cylindrical storage part 202 and the hexagonal cylinder storage part 203. As shown in FIG. 15, the nut movement restricting member 210 includes a movement restricting main body portion 211 from a connection portion connecting a substantially U-shaped movement restricting main body portion 211 and a pair of plate-like portions of the movement restricting main body portion 211. And a movement restricting knob portion 212 extending in a direction substantially orthogonal to the surface direction. A bolt shaft 92 is inserted into the substantially U-shaped interior of the movement restricting main body 211.
In addition, a groove 206 having an arcuate cross section extending along the extending direction of the cylindrical housing portion 202 from the surface facing the receiving portion 31 of the base mounting portion 41 is provided on the inner peripheral surface of the cylindrical housing portion 202 on the dressing room side. It has been. Damping grease (not shown) is applied to the inner peripheral surface of the hexagonal cylinder housing portion 203. The hexagonal cylinder housing portion 203 supports the nut 91 so as to be movable in the axial direction until one surface of the nut 91 comes into contact with the nut movement restricting member 210 while restricting the rotation of the nut 91. A coil spring 80 is disposed between the other surface of the nut 91 and the spring receiving plate portion 204.

  As shown in FIGS. 13, 14, and 16, the latch member 220 includes a substantially hemispherical hemispherical portion 221 having a driver groove 61 and a substantially cylindrical cylindrical portion 222, and can be protruded and retracted from the base hole 42. It is configured. Further, the cylindrical portion 222 is provided with a bolt fitting portion 223 to which the bolt head 93 is fitted so as not to rotate. The bolt fitting portion 223 is formed in a groove shape having a substantially U-shaped cross section that opens outward in the radial direction. Further, a deformable bolt press-fitting protrusion 224 protrudes into the bolt fitting part 223. Further, the cylindrical portion 222 is provided with an O-ring groove 225 formed in series along the circumferential direction. An O-ring 230 as a base latch sliding contact member is fitted in the O-ring groove 225. The outer diameter dimension of the O-ring 230 is slightly larger than the outer diameter dimension of the cylindrical portion 222 and is set to be substantially equal to the inner diameter dimension of the base hole 42 and the cylindrical housing portion 202. For this reason, the outer peripheral edge of the O-ring 230 protrudes outward from the cylindrical portion 222 when fitted in the O-ring groove 225, and is in sliding contact with the inner peripheral surfaces of the base hole 42 and the cylindrical housing portion 202.

Further, an arc groove portion 226 is provided in a portion from a part of the outer peripheral edge of the flat surface of the cylindrical portion 222 to the vicinity of the O-ring groove 225. The arcuate groove 226 is provided at a position where the angle formed by the arcuate opening and the substantially U-shaped opening of the bolt fitting part 223 is approximately 90 °. Further, an elastic portion 227 is provided inside the arc groove portion 226. A protruding portion 228 is provided at the distal end of the elastic portion 227 in the extending direction.
The protrusion 228 and the groove 206 constitute a rotation restricting means that restricts the rotation of the latch member 220 by engaging with each other. Further, the accommodating portion 201, the groove portion 206, and the O-ring 230 are formed between the closed surface side space 208 on the spring receiving plate portion 204 side of the O-ring 230 in the accommodating portion 201 and the outside (space outside). The air damper is configured as a damper means for applying a force (damper force) in the direction opposite to the latch force to the latch member 220 by adjusting the pressure in the closed surface side space 208 by allowing air to enter and exit.

Next, an example of the assembly operation of the latch body 35D will be described. Note that the operation of attaching the latch device 30D to the door body 20 is the same as that of the first embodiment, and a description thereof is omitted.
First, the nut 91 is screwed into the bolt 94 and the tip of the bolt shaft 92 is crimped, and then the bolt head 93 is press-fitted into the bolt fitting portion 223 while the bolt press-fitting protrusion 224 of the latch member 220 is deformed. Next, the O-ring 230 is fitted into the O-ring groove 225. Then, damping grease is applied to the opening periphery of the hexagonal cylinder housing part 203, and the coil spring 80 is disposed in the hexagonal cylinder housing part 203. Thereafter, the nut 91 is accommodated in the hexagonal cylinder accommodating portion 203 while the coil spring 80 is contracted by the nut 91 attached to the latch member 220, and the nut 91 is positioned closer to the spring receiving plate portion 204 than the insertion portion 205. And apply damping grease to the side surface of the nut 91. Then, the nut movement restricting member 210 is inserted into the insertion portion 205 and the bolt shaft 92 is inserted, whereby the movement restricting main body portion 211 restricts the nut 91 from moving toward the base hole 42. Then, the protruding amount of the latch member 220 can be changed by adjusting the screwed state of the nut 91 and the bolt 94, and the protruding portion 228 engages with the groove portion 206 every time the latch member 220 is rotated once. The rotation of the latch member 220 is restricted. Thus, the assembly of the latch main body 35D is completed.

Next, the operation of the latch device 30D when closing the door 1D will be described.
When the door body 20 is rotated to close the door 1D, the latch member 220 of the latch device 30D is pushed into the cylindrical housing portion 202 while moving in contact with the receiving portion 31. At this time, since the nut 91 approaches the spring receiving plate portion 204, the closed surface side space 208 is narrowed and the pressure in the closed surface side space 208 is temporarily increased, but the air in the closed surface side space 208 is interposed via the groove 206. Is gradually released to the outside of the space, the pressure in the closed surface side space 208 gradually decreases, and the pressure difference from the outside of the space is eventually eliminated. For this reason, the latch member 220 is smoothly pushed into the cylindrical housing portion 202.

  Further, when the door body 20 is rotated, the latch member 220 protrudes from the cylindrical housing portion 202 and the latch member 220 engages with the receiving body portion 32 to close the door 1D. At this time, the nut 91 is urged away from the spring receiving plate portion 204 by the latching force of the coil spring 80, but air outside the space is gradually taken into the closed surface side space 208 through the groove portion 206. A damper force acts on the latch member 220. In addition, a damper force is applied to the latch member 220 by the damping grease applied to the side surface of the nut 91. For this reason, the protrusion speed of the latch member 220 becomes slow compared with the structure where a damper force does not act, and the collision sound between the latch member 220 and the receiving body part 32 is reduced.

According to such 2nd Embodiment, in addition to the effect similar to (1)-(3) of 1st Embodiment, there exist the following effects.
(7) Since the damper force is applied to the latch member 220 by the air damper composed of the housing portion 201, the groove portion 206, and the O-ring 230, the protruding speed of the latch member 220 can be reduced, and the latch member 220 The collision sound with the main body 32 can be reduced. In particular, since the damping grease is applied to the nut 91, a large damper force can be applied, and the collision noise can be further reduced.

  (8) Since the groove 206 functioning as the rotation restricting means functions as a means for adjusting the pressure in the closed surface side space 208, there is no need to provide a hole or the like having only the pressure adjusting function. The configuration can be simplified.

  (9) Since the nut movement restricting member 210 for restricting the movement of the nut 91 toward the base hole 42 is detachably provided in the accommodating portion 201, the nut 91 and the bolt 94 attached to the latch member 220 are accommodated in the accommodating portion. After being accommodated in 201, the latch device 30 </ b> D can be easily assembled by attaching the nut movement restricting member 210 and restricting the movement of the nut 91.

Note that the following configuration may be applied as a modification of the second embodiment.
For example, the damper force may be applied only with the damping grease without providing the O-ring 230, or the damper force may be applied only with the air damper without applying the damping grease.
Further, the O-ring 230 may be provided on the inner peripheral surface of the cylindrical housing portion 202. Further, instead of the O-ring 230, a resin-based inter-latching sliding contact member may be provided intermittently along the circumferential direction of the latch member 220 or the cylindrical housing portion 202. Further, the cylindrical housing portion 202 and the latch member 220 may be shaped so that a slight gap is formed between them, and a damper grease may be applied to the gap by applying damping grease. In such a configuration, the movement of the nut 91 may be restricted by a configuration similar to that of the base inner cylinder portion 47 having a substantially C-shaped cross section.
And the modification of 1st Embodiment mentioned above may be applied suitably as a modification of 2nd Embodiment.

In addition, the best configuration, method and the like for carrying out the present invention have been disclosed above, but the present invention is not limited to this. That is, the invention has been illustrated and described with particular reference to certain specific embodiments, but without departing from the spirit and scope of the invention, Various modifications can be made by those skilled in the art in terms of material, quantity, and other detailed configurations.
Therefore, the description limited to the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of one part or all of such is included in this invention.

It is a longitudinal section showing a door concerning a 1st embodiment of the present invention. It is a cross-sectional view showing the door. It is the cross-sectional view seen from the upper side of the door body which shows a latch main body. It is the longitudinal cross-sectional view seen from the bathroom side which shows a latch main body. It is the longitudinal cross-sectional view seen from the rotation center side of the door body which shows a latch main body. It is the cross-sectional view which looked at the state where the latch member was pushed only by the hanging dimension from the top. It is the cross-sectional view which looked at the state when a door frame space | interval is small compared with the state of FIG. It is the cross-sectional view which looked at the state when a door frame space | interval is large compared with the state of FIG. 2 from the top. It is a longitudinal cross-sectional view of the latch main body which concerns on the modification of 1st Embodiment of this invention. It is a cross-sectional view of a latch device according to another modification of the first embodiment of the present invention. It is a cross-sectional view of a latch device according to still another modification of the first embodiment of the present invention. It is a longitudinal cross-sectional view which shows the door which concerns on 2nd Embodiment of this invention. It is the cross-sectional view seen from the upper side of the door body which shows a latch main body. It is the longitudinal cross-sectional view seen from the bathroom side which shows a latch main body. It is the longitudinal cross-sectional view seen from the rotation center side of the door body which shows a latch main body. It is the longitudinal cross-sectional view seen from the rotation center side of the door body which shows a latch main body.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,1D ... Door (joint), 10 ... Frame body, 20 ... Door body (surface material), 30, 30B, 30C, 30D ... Latch device, 31, 31B, 31C ... Reception part, 35, 35A, 35B, 35C 35D ... Latch body, 40, 110, 200 ... Base member, 42, 111 ... Base hole, 45 ... Groove (rotation restricting means, pressing means), 60, 60A, 120, 220 ... Latch member, 65 ... Elastic part ( Pressing means), 66... Projection (rotation restricting means, pressing means), 201. Accommodating part, 210... Nut movement restricting member (adjusting means movement restricting member), 230. , 206... Groove (rotation restricting means, damper means), 227... Elastic part, 228... Projection (rotation restricting means, damper means).

Claims (8)

A latch body provided on one of a frame body and a face member supported on the frame body so as to be opened and closed, and a receiving portion provided on the other, and the latch body engages with the receiving portion. A latch device for regulating the position of the face material in the closed position,
The latch body is
A base member fixed to the one and having a base hole;
A latch member supported by the base member so as to protrude and retract from the base hole;
A coil spring that urges the latch member in a direction to protrude from the base hole;
An adjusting means capable of adjusting the amount of protrusion of the latch member from the base hole to adjust a hanging dimension with the receiving portion ;
A substantially cylindrical accommodating portion that is provided at a peripheral edge of the base hole and accommodates the latch member, the coil spring, and the adjusting means;
An adjusting means movement restricting member that abuts on the adjusting means and restricts movement of the latch member in the protruding direction ;
The adjusting means includes a nut and a bolt having a bolt shaft and a bolt head screwed into the nut, and the bolt head fixed to the latch member.
The adjusting means movement restricting member comprises a substantially U-shaped movement restricting main body,
The accommodating portion is
A latch member accommodating portion that is formed in a cylindrical shape in a series around the periphery of the base hole and accommodates the latch member;
A nut housing portion that is formed in a series of cylinders provided in the latch member housing portion, and that accommodates the nut so as to be movable in the tubular axial direction while restricting rotation of the nut;
A spring receiving plate for closing the opening of the nut housing;
Provided at a connecting portion between the latch member accommodating portion and the nut accommodating portion, and an insertion portion into which the adjustment means movement restricting member is detachably inserted,
The coil spring is disposed between the nut and the spring receiving plate portion in the nut housing portion,
In the insertion portion, the bolt shaft is inserted into a substantially U-shaped inside of the movement restriction main body, and the movement restriction main body abuts on the nut and the nut moves toward the base hole. A latch device in which the adjusting means movement restricting member is inserted so as to restrict the operation . The latch device according to claim 1 , wherein a rotation restricting means for restricting the rotation of the latch member is provided between the latch member accommodating portion and the latch member. By pressing the latch member in a direction crossing the protruding and retracting direction in claim 1 or claim 2 is provided between the latch member pressing means and said latch member accommodating portion for pressing the latch member accommodating portion The latch device as described. One of the inner peripheral surface facing the outer peripheral surface of the latch member and the outer peripheral surface of the latch member in the latch member accommodating portion is provided with a protruding portion protruding toward the other, and the other is provided with the protruding portion. And a groove that is slidable in the protruding and retracting direction is provided.
The protruding portion or the groove portion is provided in the latch member accommodating portion or the latch member via an elastic portion that is elastically deformable in a direction substantially along the protruding direction of the protruding portion,
The protrusion and the groove constitute a rotation restricting means for restricting the rotation of the latch member by their engagement,
Said pressing means is composed of said protruding portion and the groove portion and the elastic portion, said latch member by the reaction force of the elastic deformation of the elastic portion of claim 3 which is pressed against the latch member accommodating portion Latch device. Said latch member of claims 1 to 4 in which the damper means is provided for applying a force in the direction opposite to the biasing force of the coil spring relative to said latch member when it is biased by the coil spring The latch device according to any one of the above. The outer peripheral surface of the front SL latch member, projecting projecting toward the inner circumferential surface of the latch member receiving portion via an elastically deformable elastic portion in the direction of advance and retreat with respect to the inner peripheral surface of the latch member accommodating portion Part is provided,
The inner peripheral surface of the latch member accommodating portion is provided with a groove portion that engages with the protruding portion and is slidable in the protruding and retracting direction.
One of the outer peripheral surface of the latch member and the inner peripheral surface of the latch member housing portion is provided with a base latch inter-sliding contact member arranged in a series along the circumferential direction and in sliding contact with the other,
The protrusion and the groove constitute the rotation restricting means for restricting the rotation of the latch member by their engagement,
The latch member accommodating portion , the groove portion, and the inter-base latch sliding contact member are configured to apply the pressure in the closed surface side space closer to the closing surface than the inter-base latch sliding contact member in the latch member accommodating portion via the groove portion. was by adjusting in and out of the air, constitutes a damper for the latch member exerts a force between the biasing force in the opposite direction of the coil spring relative to said latch member when it is biased by the coil spring The latch device according to claim 2 . A frame fixed to the building,
A face material supported to be freely opened and closed by this frame,
Fittings comprising a latch device according to claim 1 to claim 6. The fitting according to claim 7 , wherein the face material is a door body rotatably supported by the frame body.

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