JP3874404B2 - Door open / close control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides a novel opening / closing control device for a door (hereinafter simply referred to as a door) attached to a main body through a hinge having a vertical rotation axis, such as a cover of furniture, a mailbox, or a door of a kitchen appliance. In particular, the present invention relates to a door opening / closing control device that can keep the closed state of the door stable and can maintain the opening angle at an arbitrary angle position when the door is opened.
[0002]
[Prior art]
As a conventionally known door opening / closing control device, for example, a hydraulic closer used for a front door of a building can be cited.
[0003]
The purpose of the closer is to automatically close the door when it is released, and it can be kept in a stable state, but it cannot be held at any opening angle. It can be locked only at the maximum opening angle.
[0004]
However, the above-described hydraulic door closer is complicated and expensive to use for furniture and the like, and has a large size, so that it cannot be mounted on a mailbox, for example.
[0005]
On the other hand, for example, in a refrigerator, when the door is close to the position where the door is closed, the door is attracted to the main body frame and closed by the magnetic force, and the door is stable in this state. It is not designed to hold at the opening angle.
[0006]
In addition, since the magnetic force is inversely proportional to the square of the distance between the magnet and the magnetic body, the closer the distance between the door and the main body frame is, the stronger it becomes, and there is also a problem that noise is generated when the door is closed.
[0007]
In other words, as described above, the conventional door opening / closing control device has a function of maintaining the door in a stable state at an arbitrary opening angle even though it has a function of stably maintaining the closed state of the door. Absent.
[0008]
[Problems to be solved by the invention]
However, when putting things in and out of storage furniture or closets etc. in high places, you must work on a stepladder etc. If the opening of the open door changes due to vibration or furniture installation failure There is a risk of falling over the operator's head.
[0009]
Also, in the case of storerooms installed outdoors, it is dangerous because the open door may be moved or closed by the wind, and the storeroom is installed at a high place in recent severe housing circumstances. Therefore, there is a need for a door opening / closing control device that stably holds the door at an arbitrary opening angle.
[0010]
In view of the circumstances described above, the present invention provides a simple, inexpensive, and low-noise structure opening / closing control device that can stably hold the door in a closed state as well as stably hold the door at an arbitrary opening angle. The purpose is to do.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the present invention controls a door that opens and closes an opening of a main body by rotating around a vertical rotation axis, and is near the opening of the main body to which the door is attached. In the ceiling plate and / or the bottom plate, a long and narrow sliding block that is guided to move horizontally along the opening edge thereof, and a horizontal connection that connects the sliding block to the vicinity of the pivot side edge of the inner surface of the door A link is provided, and one end of this connecting link is connected to the sliding block, and the other end is connected to the vicinity of the pivot side edge of the inner surface of the door via a pair of pivots around a vertical rotation shaft, thereby opening and closing the door. conjunction with sliding blocks to allow reciprocate horizontally along the opening edge of the main body portion, whereas, in the vicinity outside the movement locus of the sliding block, having a substantially elongated rectangular projection shape of the horizontal surface braking A block is provided, and the edge of the door of the brake block on the pivot side The inner end that is far from the center is pivotally supported on the main body so as to be able to rotate around a vertical rotation axis, and the outer end is urged in a direction that interferes with the movement path of the sliding block, while the braking is performed. The side of the block facing the sliding contact block is designated as the friction surface, the sliding contact block moves in the direction of the pivot side edge of the door, and the outer end of the braking block is pushed outward against its biasing force. In the normal state where the side surface of the sliding block and the friction surface of the braking block face each other, the distance from the vertical rotation axis of the friction surface of the braking block is set so that both surfaces are in surface contact. Further, it is characterized in that an inclined end edge is formed on the pivot end side so as to be connected to the friction surface , thereby facilitating the engagement with the sliding contact block .
[0012]
【Example】
Hereinafter, the present invention will be described based on embodiments shown in the drawings.
1 and 2, reference numeral 100 denotes a main body (hereinafter simply referred to as a main body) of a mailbox, and door brackets 104 are fixed to upper and lower ends of the front surface 101 of the main body 100, and project from these brackets. The door 102 is pivotally supported by the made pin 103, and an opening (not shown) formed in the front surface 101 is opened and closed.
[0013]
In the illustrated embodiment, the door opening / closing control device 10 according to the present invention is disposed on the lower surface of the upper surface plate 105 in the vicinity of the opening of the main body 100, that is, the ceiling plate, and controls the opening / closing and rotation of the door.
[0014]
The door opening / closing control device 10 includes a housing 11, and the housing is fixed to the ceiling plate of the main body 100 by a plurality of set screws 106.
[0015]
The housing 11 is formed of a long, for example, hollow box having an open upper surface, and a rectangular first protrusion 12 and a triangular second protrusion 13 are formed on the left and right side surfaces, respectively.
[0016]
In addition, for example, a linear guide groove 14 perpendicular to the opening of the main body 100 is formed in the housing 11. For example, a prismatic sliding contact block 20 is accommodated so as to move back and forth along the guide groove. Yes.
[0017]
A first pin 21 having a flange formed at the lower end is planted at one end of the lower surface of the sliding contact block 20 in FIG. 2, and the lower end of the first pin 21 is an unnumbered slit formed in the housing 11. Is inserted into the main body 100.
[0018]
One end of an arc-shaped connecting link 22 is rotatably connected to the lower end of the first pin 21, and the other end of the connecting link 22 is fixed to the inner surface of the door 102 near the pivot side edge. A second pin 108 of 107 is rotatably connected.
[0019]
With the above-described configuration, the sliding contact block 20 is linked to the inner surface of the door in the vicinity of the pivot end edge via the connecting link 22, and the sliding block 20 is connected to the connecting link 22 by opening and closing the door 102. Through the guide groove 14 in the horizontal direction.
[0020]
On the other hand, the brake block 30 is rotatably supported inside the first protrusion 12 by a pivot pin 31 that is vertically installed on the bottom surface of the housing 11.
[0021]
The braking block 30 is a long member having a U-shaped cross section, for example, and its rotation center is set close to one end far from the door 102, that is, the inner end.
[0022]
In addition, as shown in FIG. 5, the dimensions and shape of the brake block 30 and the relative position with respect to the sliding contact block 20 are the same as those in the normal state, that is, in a state where the both sides face each other. The blocks 20 are set to be parallel to each other, and the side surfaces facing each other can be brought into surface contact.
[0023]
A friction surface 32 that is parallel to the longitudinal direction of the braking block 30 is formed on the side surface on the free end side of the braking block 30 that faces one side surface 23 of the sliding contact block 20.
[0024]
Further, as shown in FIGS. 3 and 4, an inclined needle edge 33 inclined with respect to the longitudinal direction is connected to the inside of the friction surface 32 via a boundary line 34.
[0025]
It is desirable that the pivot shaft of the brake block 30 be allowed to move so that the friction surface 32 can easily come into surface contact with the side surface of the sliding contact block 20.
[0026]
A coil portion of a torsion spring 35 is wound around the pivot pin 31, and one end of the torsion spring 35 abuts on the inner surface of the first projecting portion 12 of the housing and the other end abuts on one end of the inner surface of the brake block 30. As shown in FIGS. 1, 5, and 6, the braking block 30 is urged counterclockwise in these drawings.
[0027]
Note that an elastic force adjusting mechanism 36 made of, for example, a screw and a nut is provided on the inner surface of the first projecting portion 12 with which one end of the torsion spring 35 abuts, so that the elastic force of the torsion spring 35 can be adjusted appropriately. ing. Since this elasticity adjusting mechanism is well known, further detailed description is omitted.
[0028]
In the door opening / closing control apparatus according to one embodiment of the present invention configured as described above, when the door is closed as shown in FIG. .
[0029]
In this state, the braking block 30 receives counterclockwise torque by the elasticity of the torsion spring 35, and the inclined end edge 33 of the braking block presses the corner 24 of the sliding block 20.
[0030]
At this time, as shown in FIG. 4, if the elastic pressure against the corner 24 of the sliding block of the braking block 30 is F, the elastic pressure F is decomposed into a horizontal component F1 and a vertical component F2. The component force F1 acts to retract the sliding contact block 20 to the left, that is, inward.
[0031]
Therefore, the door 102 is pulled by the sliding contact block 20 via the connecting link 22 and is biased in the closing direction, and is stably held in the closed state.
[0032]
Since the horizontal component force F1 changes in proportion to the cosine of the inclination angle θ of the inclined edge 33 with respect to the vertical line in FIG. 4 , the degree of inclination of the inclined edge 33 with respect to the friction surface 32 is changed. By arbitrarily setting the inclination angle θ corresponding to the rotation angle of the surface 32, the component force F1 at an arbitrary stroke of the sliding contact block 20 can be set to an appropriate value.
[0033]
Further, the component force F <b> 2 in the vertical direction of the elastic pressure F is carried by the housing 11 through the opening edge of the guide hole 14.
[0034]
On the other hand, when the door is manually opened from the door closed state shown in FIG. 1, as shown in FIG. 6, the sliding contact block 20 is pulled to the door 102 via the connecting link 22, and advances to the right in the drawing. .
[0035]
In this process, the corner 24 rotates the braking block 30 clockwise while pushing the inclined end edge 33 against the elasticity of the torsion spring 35.
[0036]
When the door is further opened, the corner 24 exceeds the boundary line 34, and thereafter, the side surface 23 of the sliding contact block comes into surface contact with the friction surface 32. When the door is opened at the maximum angle, the sliding contact block 20 is opened. Is the most advanced position (see FIG. 5).
[0037]
In the above process, as shown in FIG. 3, a pressure contact force P is generated between the friction surface 32 of the brake block and the side surface 23 of the sliding contact block, and a friction force μP obtained by multiplying the pressure contact force P by the friction coefficient μ is generated. Acts as a resistance when opening the door.
[0038]
The above frictional force μP acts with the same magnitude when the side surface 23 of the sliding block moves to the opposite side (left direction) with respect to the friction surface 32 of the braking block. Therefore, in the state of FIG. When the door is stopped at an arbitrary opening angle, the door is held in a stable state that does not move to either the open or closed side unless an external force equal to or greater than the frictional force μP is applied to the sliding contact block 20.
[0039]
On the other hand, when the door is closed after the door shown in FIG. 5 is opened, the sliding contact block 20 is pushed by the connecting link 22 and retreats inward of the main body, and the corner 24 has a boundary line 34. And the inclined edge 33 comes into contact (see FIG. 4).
[0040]
In this state, as described above, the inclined end edge 33 pushes the sliding contact block 20 to the left by the horizontal component force F <b> 1 and acts to close the door via the connecting link 22.
[0041]
Therefore, at this time, even if the hand for closing the door is released, the door is automatically rotated clockwise and closed, and finally the door is closed as shown in FIG.
[0042]
The friction surface 32 of the braking block and / or the side surface 23 of the sliding block is increased by a physical or chemical treatment to increase the friction coefficient, or the surface has a large friction coefficient such as cloth or leather. An appropriate friction coefficient can be imparted by bonding a sheet made of a material.
[0043]
【The invention's effect】
As is apparent from the above description, when the door opening / closing control device according to the present invention opens the door to some extent, the side surface of the sliding contact block that is connected to the door and the friction surface of the braking block come into sliding contact. Since the frictional force is generated, when the door is opened to a certain extent, a resistance force is shown against the external force in both the closing direction and the opening direction, and the opening angle of the door can be kept stable.
[0044]
Also, when the door opening angle is small, the slanted edge of the brake block acts to push the sliding contact block inward. It is easy to use because it closes automatically.
[0045]
Furthermore, since the area of the friction surface that applies the braking force to the door is large, not only the braking force can be set large, but also the wear as a door opening / closing control device is large.
[0046]
In addition, since a member that moves at high speed is not used, no noise is generated during operation, and operation is quiet.
[0047]
In addition, since the number of parts is small and the structure is simple, not only can it be manufactured at low cost, but there is no oil leakage because it does not use hydraulic pressure, and there are various effects such as no inspection and maintenance. .
[Brief description of the drawings]
FIG. 1 is a plan view of a door opening / closing control device according to the present invention as seen from below, showing a closed state.
2 is a side view of the door opening and closing device shown in FIG. 1. FIG.
FIG. 3 is a diagram for explaining a sliding contact state between a sliding contact block and a braking block.
FIG. 4 is a diagram for explaining a pressure contact state between a sliding contact block and an inclined end edge of a braking block.
FIG. 5 is a plan view of a door opening and closing device similar to that in FIG.
6 is a plan view of the door opening and closing device similar to FIG. 1, showing a case where the door opening angle is small. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Opening / closing control apparatus 11 Housing 14 Guide groove 20 Sliding contact block 22 Connection link 23 Side surface 24 Corner 30 Brake block 32 Friction surface 33 Inclined edge 35 Torsion spring 100 Furniture main body 102 Door

Claims (1)

Controlling a door that opens and closes the opening of the main body by rotating around a vertical rotation axis , and the opening edge of the ceiling plate and / or bottom plate near the opening of the main body to which the door is mounted And a horizontal connecting link that connects the sliding contact block to the vicinity of the pivotal side edge of the inner surface of the door, and slidably contacts one end of the connecting link. The other end is connected to the block near the pivot side edge on the inner surface of the door through a pair of pivots around the vertical rotation axis, so that the sliding contact block opens in the body part in conjunction with the opening and closing of the door. On the other hand, a rectangular braking block having a substantially elongated projection shape on the horizontal plane is provided near the outside of the movement locus of the sliding contact block along the edge, and the door of the brake block is pivotally supported. Connect the inner edge far from the side edge to the main unit While pivoting around the shaft, the outer end is urged in a direction that interferes with the movement locus of the sliding block, while the side surface of the braking block that faces the sliding block is designated as the friction surface, The sliding contact block moves in the direction of the pivot side edge of the door, and the outer end of the braking block is pushed outward against the biasing force, so that the side surface of the sliding contact block and the friction surface of the braking block are In the normal state facing each other, the distance from the vertical rotation axis of the friction surface of the braking block is set so that both surfaces make surface contact, and the distance from the vertical rotation axis is connected to the pivot end side. An opening / closing control device for a door, characterized in that an inclined end edge is formed to facilitate engagement with a sliding contact block .

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