TWI641750B - Sliding door stopping device - Google Patents

Abstract

The invention provides a sliding door stop device capable of setting the magnitude of a releasing force more stably. The sliding door stop device 10 is mounted on one of the door frame 2 and the sliding door 4 mounted on the door frame 2 to stop the sliding door 4 at an arbitrary position relative to the door frame 2. The stopper 16 is configured to be pivotable around the pivot center axis C2 with respect to the support member 12, and makes the position of the pivot center axis C2 displaceable. The stopper 16 is displaceable between a locked position and a locked release position. In the locked position, preventing the friction engagement portion 26 from pivoting through the pivot center axis C2 and the upper surface 3a of the guide rail 3; in the lock release position, the pivot center axis C2 is farther away than in the lock position The upper surface 3a of the guide rail 3 allows pivoting. The stopper 16 is urged toward the locked position by the spring 18.

Description

   Sliding door stop   

The present invention relates to a sliding door stop device for stopping a sliding door at an arbitrary position relative to a door frame.

In the sliding door mechanism in which the sliding door slides with respect to the door frame, especially in the case of a pressing device that pushes the sliding door in the closing direction, a sliding door stop device (free stop device) may be provided for Stop the door in the open position. For example, as disclosed in Patent Document 1, the sliding door stop device includes a stopper that is pivotably mounted on a support member fixed to the sliding door. The front end of the stopper is made of an elastic material having a large friction coefficient such as rubber, and the elastic portion at the front end is configured to slide on a guide rail on which the door wheel of the sliding door travels. When the sliding door moves in the opening direction, the elastic portion at the front end of the stopper is positioned rearward (closed direction) with respect to the pivot center axis of the stopper, and slides on the guide rail without receiving a large frictional force. On the other hand, when the sliding door moving in the opening direction changes its moving direction in the closing direction, the position of the elastic portion becomes forward of the moving direction of the sliding door with respect to the pivoting central axis of the stopper, and stops The piece is in a state of being stretched with the guide rail due to the frictional force received by the elastic portion from the guide rail. Then, the elastic portion is pressed against the guide rail with a larger force, and the frictional force that the elastic portion receives from the guide rail also becomes larger. Due to this large frictional force, the sliding door is stopped, and the sliding door is prevented from moving in the closing direction in the stopped state. In this stop state, when a force in the closing direction is applied to the sliding door to a certain degree or more, the elastic portion of the stopper receives a large force from the guide rail, and the elastic deformation causes the pivoting central axis to the contact point with the guide rail. The length of the spring is shortened, and the pivot of the stopper causes the elastic portion to pass between the pivot center axis and the guide rail, and makes the elastic portion to a position rearward (opening direction) than the pivot center. As a result, the frictional force that stops the sliding door is released, the stopped state is released, and the sliding door can move freely in the closing direction.

    [Xizhi technical literature]         [Patent Literature]    

[Patent Document 1] Japanese Patent No. 2683321

In the sliding door stop device as described above, when the stopped state of the sliding door is released and moved in the closing direction, the magnitude of the force on the sliding door (hereinafter referred to as the releasing force) mostly depends on when the stopper pivots to make it The elastic portion of the front end passes the amount of elastic deformation of the elastic portion when it is between the pivot central axis and the guide rail. That is, if the distance between the pivot center axis and the guide rail is set to be short, the required amount of elastic deformation increases, and the required releasing force also increases. Conversely, if the distance between the center of the pivot and the guide rail is set longer, the amount of elastic deformation required is reduced, and the release force is reduced. If the releasing force is too large, the sliding door may be lifted from the guide rail by the stopper before the elastic member is elastically deformed by the required amount. Conversely, if the release force is too small and the stop state is released only by the force of the pressing device that pulls the slide door to the closed position, the slide door may not stop at any open position.

The material used for the elastic portion is selected from those that satisfy various conditions as a stopper, such as the magnitude of friction coefficient, wear durability, rigidity required to withstand the frictional force required to stop the sliding door, etc. However, such The elastic member is usually a relatively hard material, and it is difficult to adopt a material capable of obtaining a large amount of elastic deformation. Therefore, the amount of elastic deformation of the elastic portion for generating a releasing force of an appropriate magnitude cannot be as small as a few millimeters. Therefore, even if the installation position of the sliding door stop device is only slightly deviated, the magnitude of the deviation between the actual elastic deformation amount and the design value of the elastic deformation amount is increased relative to the design value, and the release force is greatly changed. In addition, even when an appropriate releasing force can be set in the initial setting, the elastic portion gradually wears out due to repeated opening and closing of the sliding door, and the amount of elastic deformation also decreases as the wear progresses, so that the releasing force gradually decreases. In addition, when the elastic material of the elastic portion deteriorates for a long time and the elastic coefficient changes, the magnitude of the release force also changes accordingly. That is, the conventional sliding door stop device has a problem that it is difficult to set the release force stably.

Therefore, an object of the present invention is to provide a sliding door stop device capable of stably setting a magnitude of a releasing force.

In view of this, the present invention provides a sliding door stop device, which is installed on one of a door frame and a sliding door installed on the door frame for stopping the sliding door at an arbitrary position relative to the door frame. The door stopping device includes a support member fixed to one of the door frame and the sliding door, and a stopper configured to be pivotable around the pivot center axis with respect to the support member, and the position of the pivot center axis is adjustable. Displaced, the stopper has a friction engagement portion on the side of the other of the door frame and the sliding door, and the friction engagement portion frictionally engages a sliding surface extending along the opening and closing direction of the sliding door; and a spring, When the stopper is pushed, wherein the stopper is displaceable between the locked position and the unlocked position, the pivot center axis is farther from the sliding surface in the locked release position than in the locked position. Stop position to prevent the friction engagement portion from pivoting through the stopper between the pivot center axis and the sliding surface; in the lock release position, allow the friction engagement portion to pass the pivot center axis to the sliding surface Stop When the component is pivoted, the spring pushes the stopper toward the locking position.

In the sliding door stop device, the stopper is configured to shift the position of the pivoting central axis away from the sliding surface, and at the same time, the stopper is urged to a locking position closer to the sliding surface by a spring. Therefore, from the stop state where the stopper is stretched between the sliding surface to stop the sliding door, and when the stopper pivots the friction engagement portion between the pivot central axis and the guide rail to release the stop state. The required release force for the sliding door is mainly determined by the urging force of the spring. That is, in the sliding door stop device, the releasing force does not depend on the magnitude of the elastic deformation of the friction engagement portion, but mainly depends on the magnitude of the urging force of the spring. Compared with an elastic material as a friction engagement portion, a spring can easily obtain a larger amount of displacement. Therefore, compared with the conventional sliding door stop device, the sliding door stop device that sets the releasing force by the urging force of the spring can reduce the variation of the releasing force caused by the deviation of the installation position and the friction engagement portion. , Can set the release force more stably. In addition, since it is not necessary to form the friction engagement portion with a material that is easy to elastically deform, the selection range of the material of the friction engagement portion is expanded, and a material that cannot be selected conventionally due to the amount of elastic deformation can be selected, for example, it has high resistance Abrasive materials.

Preferably, it may further include: a link member pivotably mounted to the support member, and a stopper pivotally mounted to the link member at a position remote from the pivot center axis of the link member, by the pivot of the link member The rotation enables the stopper to be displaced between the locked position and the unlocked position with respect to the support member.

More preferably, the spring can indirectly urge the stopper via the link member.

Further, the spring may urge the link member at a position farther from the pivot center axis of the link member than the pivot center axis of the stopper.

With such a structure, the force applied to the stopper by the urging force of the spring is increased by the principle of the lever. Therefore, even if a spring having a relatively weak elastic force is used, a large amount of force can be applied to the stopper.

Preferably, it may further include a pressing force adjusting member, and the pressing force adjusting member is engaged with one end of the spring to adjust the compression amount of the spring.

By providing such a pressing force adjustment member, the pressing force of the spring can be adjusted after the sliding door stop device is installed, and it is possible to easily correct the error of the releasing force caused by the error of the installation position of the sliding door stop device or the size error of each component average. In addition, you can change the setting of the release force after use.

In addition, the stopper located at the locking position may further include a pressing member, which presses the stopper in a pivoting direction around the pivoting central axis of the stopper, and is pushed by the pressing member. The pressure causes the friction engagement portion of the stopper to press against the sliding surface.

With such a structure, the frictional resistance of the friction engagement portion to the sliding surface can be increased.

Moreover, at this time, the pressing member is a leaf spring. The leaf spring includes a first portion located on one side of the stopper and a second portion located on the other side in the opening and closing direction of the sliding door. State, when the friction engagement portion is engaged with the sliding surface at a side closer to the closing direction of the sliding door than the pivot center axis of the stopper, the first portion pushes the stopper to press the friction engagement portion against On the sliding surface, when the friction engagement portion is engaged with the sliding surface at a side closer to the opening direction of the sliding door than the pivoting central axis of the stopper, the second part pushes the stopper, thereby locking the frictional card. The joint is pressed against the sliding surface.

In addition, the sliding surface may have an arc-shaped cross-sectional shape, the friction engagement portion has a concave portion curved along the cross-sectional shape of the sliding surface, and the concave portion is in contact with the sliding surface when the stopper is in the locked position.

With such a structure, the sliding engagement portion can come into contact with the sliding surface having an arc-shaped cross-sectional shape over a wider area. Thereby, it is possible to generate more frictional resistance and stop the sliding door more surely.

Hereinafter, embodiments of the sliding door stop device of the present invention will be described with reference to the drawings.

1‧‧‧ Sliding door mechanism

2‧‧‧ Door Frame

3‧‧‧rail

3a‧‧‧ Top surface

4‧‧‧ Ramon

4a‧‧‧ in front of the door

4b‧‧‧door back

5a, 5b‧‧‧ hanger

6a, 6b‧‧‧door pulley

7‧‧‧ retractable spring device

7a‧‧‧Wire

8‧‧‧ Brake Saw Rack

9‧‧‧brake device

10‧‧‧ Sliding door stop

12‧‧‧ support parts

12a‧‧‧Top wall section

14‧‧‧ Link Parts

14a‧‧‧Front end

16‧‧‧stop

18‧‧‧ spring

18a‧‧‧ bottom

18b‧‧‧Top

20‧‧‧ Rotation axis of the link part

22‧‧‧rotation axis

24‧‧‧Slip ring

26‧‧‧ Friction engagement section

28‧‧‧ spring seat

30‧‧‧Pushing pressure adjusting part

32‧‧‧Adjustment screw

32a‧‧‧ lower end

34‧‧‧Spring Guide

36‧‧‧ support pin

60‧‧‧ Sliding door stop device

62‧‧‧Supporting parts

64‧‧‧link widget

66‧‧‧stop

66a, 66b ‧‧‧ side

76‧‧‧ Friction engagement section

76a‧‧‧ recess

76b‧‧‧ Corner

88‧‧‧ leaf spring

88a‧‧‧Central

88b‧‧‧Part I

88c‧‧‧Part II

90‧‧‧Rivets

101‧‧‧ Sliding door mechanism

105a, 105b‧‧‧ hanger

110‧‧‧Sliding guide

201‧‧‧ Sliding door agency

C1‧‧‧ pivot center axis of link member 14

C2‧‧‧ Pivot center axis of stop 16

P‧‧‧contact point

1 is a schematic diagram of a sliding door mechanism having a sliding door stop device according to an embodiment of the present invention; FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1 to show the sliding door stop device according to the first embodiment of the present invention 3 is a cross-sectional view of the sliding door stop device taken along the line III-III of FIG. 2; FIG. 4 is a first view showing the operating state of the sliding door stop device, showing the sliding door when it is moving in the opening direction FIG. 5 is a second diagram showing the operating state of the sliding door stop device, showing the state when the sliding door is in the stopped state; FIG. 6 is a third diagram showing the operating state of the sliding door stop device, and The stopper is in a state where the lock is released; FIG. 7 is a fourth diagram showing the operating state of the sliding door stop device, showing a state when the stop state is released; and FIG. 8 is a view taken along II-II in FIG. 1 The sectional view of the line is a front view of the sliding door stop device according to the second embodiment of the present invention; FIG. 9 is a sectional view of the sliding door stop device along the line IX-IX of FIG. 8; and FIG. A schematic diagram of a sliding door mechanism; and FIG. 11 is still another example of a sliding door stop device. Schematic diagram of the sliding door mechanism.

The sliding door mechanism 1 provided with the sliding door stopping devices 10 and 60 according to the embodiment of the present invention, generally speaking, as shown in FIG. 1, each door pulley of two hangers 5 a and 5 b provided on the sliding door 4 6a and 6b are such that the sliding door 4 slides relative to the door frame 2 and opens and closes on the guide rail 3 provided on the door frame 2. A retractable spring device 7 is mounted on the door frame 2, and a front end of a lead wire 7 a extending from the retractable spring device 7 is mounted on a hanger 5 a on the door front 4 a side of the sliding door 4. Since the retractable spring device 7 retracts the wire 7 a by a built-in spring mechanism, a force in the closing direction is often applied to the sliding door 4. Therefore, when the sliding door 4 is released by hand with the sliding door 4 opened, the sliding door 4 is pulled in the closing direction by the action of the retractable spring device 7. The door frame 2 is further provided with a brake saw rack 8, and the sliding door 4 is provided with a brake device 9 which is locked with the brake saw rack 8. The brake device 9 is a kind of damper using fluid friction resistance. When the sliding door 4 is closed, it is locked with the brake toothed rack 8 on the side of the door frame 2 to brake the sliding movement of the sliding door 4 in the closing direction and make the sliding door 4 slowly. shut down. In the sliding door mechanism 1 of FIG. 1, a sliding door stop device 10, 60 according to the present invention is fixed to a hanger 5 b on the door back 4 b side of the sliding door 4. As will be described later, when the sliding door stop devices 10 and 60 release the pull door 4 with the sliding door 4 opened, the sliding door 4 is temporarily stopped there.

As shown in FIGS. 2 and 3, the sliding door stop device 10 according to the first embodiment of the present invention includes a support member 12 fixed to the sliding door 4 via a hanger 5 b on the door back 4 b side of the sliding door 4, and a link member 14. Is pivotally mounted with respect to the support member 12; the stopper 16 is pivotally mounted at an intermediate position of the link member 14; and a spring 18 pushes the front end portion 14a of the link member 14 downward. The link member 14 is rotatably attached to the support member 12 via a rotation shaft 20 fixed to the support member 12. The stopper 16 is pivotally attached to the link member 14 and fixed to the link member via a slip ring 24 made of a low-friction resistance material such as PTFE resin at a position away from the pivot center axis C1 of the link member 14. 14 on the rotation shaft 22. In addition, a friction engagement portion 26 made of a rubber material having high friction resistance is provided at a front end portion of the stopper 16. The lower end 18 a of the spring 18 is held by a spring seat 28 fixed to the front end portion 14 a of the link member 14, and the upper end 18 b of the spring 18 is held by a pressing force adjusting member 30. The pressing force adjusting member 30 is composed of an adjusting screw 32 and a spring guide 34. The adjusting screw 32 is screwed with the top wall portion 12 a of the support member 12. The spring guide 34 holds an upper end 18 b of the spring 18 and a lower end of the adjusting screw 32. 32a is pressed against the upper end 18b of the spring 18, and the pressing force adjustment member 30 adjusts the height of the spring guide 34 by rotating the adjustment screw 32 relative to the support member 12, thereby adjusting the compression amount of the spring 18. The position where the spring 18 presses the link member 14 is a position farther from the pivot center axis C1 of the link member 14 than the pivot center axis C2 of the stopper 16. Thereby, the urging force of the spring 18 is increased and applied to the stopper 16. A support pin 36 fixed to the support member 12 is provided below the front end portion 14a of the link member 14, and the link member 14 is restricted from pivoting further downward by contacting the support pin 36.

In a state where the sliding door stop device 10 is mounted on the hanger 5b on the door back 4b side of the sliding door 4 as shown in FIG. 1, the friction engagement portion 26 of the stopper 16 contacts the upper surface 3a of the guide rail 3, and the hanger The door pulley 6b of 5b rolls on the upper surface 3a of the guide rail 3. As shown in FIG. 4, in this state, when the sliding door 4 moves in the opening direction (right direction in FIG. 4), the friction engagement portion 26 of the stopper 16 will extend along the opening and closing direction of the sliding door 4. The upper surface 3a of the arranged guide rail 3 serves as a sliding surface and slides thereon. At this time, the frictional force received by the friction engagement portion 26 from the guide rail 3 causes the stopper 16 to pivot clockwise in the figure, that is, the friction engagement portion 26 moves upward. Therefore, the friction engagement portion 26 applies to The load on the guide rail 3 is caused only by the weight of the stopper 16 itself, and is very small. Therefore, the frictional force between the frictional engagement portion 26 and the guide rail 3 is also small. Therefore, when the pull-down door 4 is moved in the opening direction in the state of FIG. 4, the sliding door stop device 10 hardly generates resistance.

Next, as shown in FIG. 5, when the moving direction of the sliding door 4 changes from the opening direction (right direction in the figure) to the closing direction (left direction in the figure), the frictional force received by the friction engagement portion 26 from the guide rail The stopper 16 is pivoted in the counterclockwise direction in the figure, that is, the friction engagement portion 26 is pressed against the guide rail 3 in the direction. At this time, the stopper 16 is located at a distance from the pivoting central axis C2 of the stopper 16 to the upper surface 3 a of the guide rail 3 than the length from the pivoting central axis C2 to the contact point P between the friction engagement portion 26 and the guide rail 3. Small location. When in this engaging position, the stopper 16 allows the friction engaging portion 26 to pass between the pivoting central axis C2 and the upper surface 3a of the guide rail 3, thereby preventing the counterclockwise rotation in the figure. Therefore, the stopper 16 which attempts to pivot in the counterclockwise direction is in a state of being clamped between the link member 14 and the guide rail 3, and the load applied to the guide rail 3 by the friction engagement portion 26 is in the closing direction according to the sliding door 4 The force of moving up increases. Thereby, the frictional force between the frictional engagement portion 26 and the guide rail 3 is increased, and the sliding door stop device 10 prevents movement in the closing direction with respect to the guide rail 3. That is, the sliding door 4 to which the sliding door stop device 10 is installed is in a stopped state, and in this stopped state, the sliding door 4 is prevented from moving in the closing direction.

When a force in the closing direction is applied to the sliding door 4 from the state of FIG. 5, a larger force in the counterclockwise direction in the figure is applied to the stopper 16. A force to pivot the stopper 16 is applied to the link member 14 via the rotation shaft 22. As a result, the link member 14 is pivoted upward by the force received from the stopper member 16. When the force applied to the sliding door exceeds a predetermined magnitude and the force applied to the link member 14 exceeds the urging force of the spring 18, the link member 14 starts to pivot upward (clockwise in the figure) while compressing the spring 18 . When the link member 14 is pivoted to the engagement release position in FIG. 6, the distance from the pivot center axis C2 of the stopper 16 to the upper surface 3 a of the guide rail 3 and the pivot center axis C2 to the friction engagement portion 26 and The lengths of the contact points P of the guide rail 3 are equal, and the stopper 16 allows the friction engagement portion 26 to pass between the pivoting central axis C2 and the guide rail 3, thereby being able to pivot in the counterclockwise direction in the figure. In addition, when the sliding door 4 is moved in the closing direction, the stopper 16 is further pivoted in the counterclockwise direction, so that as shown in FIG. 7, the friction engagement portion 26 is rearward in the moving direction with respect to the pivot center axis C2 Position (right in the figure), and the position in the up and down direction also returns to the locked position. In this state, the frictional force between the frictional engagement portion 26 and the guide rail 3 is reduced, as in the foregoing description of FIG. 4. Therefore, the sliding door stop device 10 hardly generates resistance, and the sliding door 4 is automatically moved to the closed position only by the force of the retractable spring device 7 pulled in the closing direction, and becomes the closed state.

In the sliding door stop device 10, as described above, during the process from the stop state in FIG. 5 to the stop release state in FIG. 7, as shown in FIG. 6, the stopper 16 moves from the locking position in a direction away from the guide rail 3. When it reaches the lock release position, the stop state is released. In this way, the magnitude of the releasing force required to displace the stopper 16 to the locked release position mainly depends on the magnitude of the pressing force of the spring 18 that presses the stopper 16 via the link member 14. In general, the spring 18 is easier to obtain a larger amount of displacement than an elastic material made of rubber or the like as the friction engagement portion 26. Therefore, compared with the conventional sliding door stop device, the sliding door stop device 10 can reduce the variation of the release force due to the deviation of the installation position and the abrasion of the friction engagement portion 26, and can set the release force more stably. In addition, in the sliding door stop device 10, since the friction engagement portion 26 does not necessarily need to be elastically deformed by a releasing force, a material having higher rigidity than a conventional sliding door stop device may be used, and it may also have a thinner Structure. That is, the selection range of the material and structure of the friction engagement part 26 is widened.

The sliding door stop device 60 according to the second embodiment of the present invention shown in FIGS. 8 and 9 is the same as the sliding door stop device 10 according to the first embodiment, and is a sliding door mechanism 1 built in as shown in FIG. 1. And stop the sliding door 4 at any position.

A recessed portion 76 a is formed in the friction engagement portion 76 of the stopper 66 in the sliding door stop device 60. The recessed portion 76 a is curved along the upper surface 3 a of the guide rail 3 having an arc-shaped cross-sectional shape, so that the friction engagement portion 76 contacts the upper surface 3 a of the guide rail 3 with a larger area. Thereby, particularly when pivoting from the locked position to the locked release position, the friction engagement portion 76 receives a greater frictional force from the guide rail 3, and the sliding door 4 can be stopped more reliably.

In addition, the sliding door stop device 60 further includes a leaf spring 88 fixed to the support member 62 as shown in FIG. 9. The leaf spring 88 is composed of a central portion 88a, a first portion 88b, and a second portion 88c. The central portion 88a is fixed by a rivet 90. The first portion 88b and the second portion 88c are located at both ends of the central portion 88a to hold the stopper 66. The sandwich way extends downwards. As shown in FIG. 9, the stopper 66 faces the rear side (left side in the figure) with respect to the opening direction (right direction in the figure) of the sliding door 4. In a state where the center axis C2 is closer to the closing direction (left side in the figure) on the upper surface 3a of the rail 3, the first portion 88b is engaged with one side surface 66a of the stopper 66, and the stopper 66 Face the opening direction side and push it counterclockwise in the figure. As a result, the recessed portion 76 a of the friction engagement portion 76 is brought into a state of being pressed against the guide rail 3. In addition, when the sliding door 4 is moved in the opening direction, the dust on the guide rail 3 is removed by the friction engagement portion 76 pressed against the guide rail 3. In particular, since the corner portion 76b outside the recessed portion 76a located in the forward position in the moving direction collides with the guide rail 3, the corner portion 76b is mainly used to effectively remove dust, and the friction engagement portion 76 that contacts the guide rail 3 when the sliding door 4 stops Dust is less likely to stick to other surfaces. When the sliding door 4 starts to move in the closing direction (left direction in the figure), since the friction engaging portion 76 has been pressed against the guide rail 3 with a certain amount of force, the friction engaging portion 76 slides on the guide rail 3 Difficult state. Therefore, the stopper 66 is immediately stretched between the guide rails 3, and the sliding door 4 can be stopped more quickly and reliably. When the sliding door 4 is pulled in the closing direction with a certain amount of force, as in the first embodiment, the stopper 66 pivots in the counterclockwise direction in the figure and releases the stopped state. The stopper 66 faces the rear side (right side in the figure) with respect to the closing direction. When the friction engagement portion 76 becomes closer to the opening direction (right direction in the figure) than the pivot center axis C2 of the stopper 66 In a state where one side is engaged with the upper surface 3a of the guide rail 3, at this time, the second portion 88c of the plate spring 88 is engaged with the side surface 66b on the opposite side of the stopper 66, and the stopper 66 faces the side edge in the closing direction Push clockwise in the figure. In this way, the other recessed portion 76 a of the friction engagement portion 76 is brought into a state of being pressed against the guide rail 3. Therefore, even when the sliding door 4 is moved in the closing direction, it is possible to remove the dust on the guide rail 3 by rubbing the recessed portion 76a of the engaging portion 76, especially the corner portion 76b thereof. Among them, the leaf spring 88 may be fixed to other parts than the support member 62, such as the link member 64 and the like. Other forms of urging members may also be used, such as using two separate springs instead of the leaf spring 88 as shown in the figure.

The sliding door stop devices 10 and 60 of the present invention may be mounted on the side surface of the door frame 2 as shown in FIG. 10. In the sliding door mechanism 101 of FIG. 10, a sliding guide 110 is provided, and the sliding guide 110 is configured to extend in the opening and closing direction of the sliding door 4 between two hangers 105 a and 105 b provided on the sliding door 4. The frictional engagement portions 26 and 76 of the sliding door stop devices 10 and 60 slide relative to the upper surface 110a of the slide rail 110 and frictionally engage with them, so that the sliding door 4 is stopped at an arbitrary position and the stopped state is released as described above.

As shown in FIG. 11, the sliding door stopping devices 10 and 60 according to the present invention can be mounted on the front 4 a side of the sliding door 4. In the sliding door mechanism 201 of FIG. 11, by installing the sliding door stop devices 10 and 60 at such positions, when the sliding door 4 is in the open position, a portion of the guide rail 3 where the friction engagement portions 26 and 76 slide is sliding. Most of them are accessible from the outside. If the sliding portions of the friction engagement portions 26 and 76 are soiled by dust, oil, etc., a sufficient frictional force will not be generated between the friction engagement portions 26 and 76 and the guide rail 3, even in the stopped state of FIG. 5. There is a possibility that the frictional engagement portions 26 and 76 slide relative to the guide rail 3 and move the sliding door 4 in the closing direction. Therefore, although the guide rails 3 are regularly cleaned, as shown in FIG. 1, when the sliding door stop devices 10 and 60 are disposed on the door back 4 b side, the frictional engagement portions 26 and 76 slide on the guide rails 3. Partly located between the hangers 5a, 5b of the sliding door 4, especially when the sliding door 4 is in the structure of entering the door cover when the door 4 is opened, the part is arranged in the door cover, so cleaning is not easy. On the other hand, if the sliding door stop devices 10 and 60 are arranged as shown in FIG. 11, since the part to be cleaned of the guide rail 3 is not arranged in the door cover, cleaning of the part becomes easy.

The sliding door stop device according to the present invention is not limited to the above-mentioned embodiment, and various modifications are possible. For example, the sliding door stop device of the present invention may be fixed to one of the door frame 2 and the sliding door 4, and the installation position may be other than the above-mentioned embodiment. In addition, as shown in FIGS. 1 and 11, when the sliding door stop devices 10 and 60 are installed on the sliding door 4 side, the sliding surface of the friction engagement portions 26 and 76 sliding when the sliding door 4 moves may be a hanger. The door pulleys 6a, 6b of 5a, 5b are other than the upper surface 3a of the rail 3 that is engaged with the rotation. For example, as in the embodiment of FIG. Used as a sliding surface. As shown in FIG. 10, even when the sliding door stop device is mounted on the door frame 2 side, other places may be used as the sliding surface, for example, the upper surface of the sliding door 4 may be used as the sliding surface. The support members 12, 62 may be members common to other devices of the sliding door 4 or the door frame 2, such as members integral with a hanger. The stoppers 16 and 66 may not be provided with the link members 14 and 64, for example, guide grooves may be formed in the up and down directions on the support members 12, 62, and may be displaced between the engagement position and the engagement release position along the guide grooves. In addition, the spring 18 may be configured to directly engage the stops 16, 66. The pressing force adjustment member 30 does not need to have the structure of the adjustment screw 32 as described above, and may be any mechanism that can adjust the compression amount of the spring 18 when the stoppers 16 and 66 are in the lock release position. In addition, the pressing force adjusting member 30 is not necessary, and if it is not necessary to finely adjust the release force, the pressing force adjusting member 30 may be omitted.

Claims (15)

A sliding door stop device is installed on one of a door frame and a sliding door installed on the door frame, and is used for stopping the sliding door at an arbitrary open position relative to the door frame, and the sliding door stops The device includes: a support member fixed on one of the door frame and the sliding door; and a stopper configured to be pivotable relative to the support member around a pivot center axis, and making the position of the pivot center axis It is displaceable, and the stopper has a friction engaging portion on the side of the door frame and the other of the sliding door, and the friction engaging portion rubs on a sliding surface extending along the opening and closing direction of the sliding door. An engagement; and a spring for urging the stopper, wherein the stopper is displaceable between the locked position and the unlocked position, and the pivot center axis is larger in the locked release position than in the locked position The locking position is further away from the sliding surface, and in the locking position, pivoting of the stopper between the frictional center portion and the sliding surface through the pivot center axis is prevented; the locking is released Position allowing the friction to engage By pivoting the stop member between a rotation center axis of the pivot to the sliding surface, the spring member toward the stopper and the locking position of the pressing. The sliding door stop device according to item 1 of the patent application scope, further comprising: a link member pivotably mounted to the support member, and the stopper at a position remote from the pivot center axis of the link member It is pivotably mounted to the link member, and by the pivot of the link member, the stopper can be displaced relative to the support member between the locked position and the locked release position. The sliding door stop device according to item 2 of the patent application scope, wherein the spring indirectly urges the stopper via the link member. The sliding door stop device according to item 3 of the patent application scope, wherein the spring presses the link member at a position farther from the pivot center axis of the link member than the pivot center axis of the stopper. The sliding door stop device according to any one of the first to fourth aspects of the patent application scope, further comprising: a pushing pressure adjusting member, which is engaged with one end of the spring to adjust the compression amount of the spring. The sliding door stop device according to any one of claims 1 to 4, further comprising: a pressing member to pivot in a pivoting direction around a pivoting central axis of the stopper The stopper is pressed, and the frictional engagement portion of the stopper is pressed against the sliding surface by the pressing force of the pressing member. The sliding door stopping device according to item 5 of the scope of patent application, further comprising: a pushing member to push the stopper in a pivoting direction around a pivoting central axis of the stopper, and The friction engagement portion of the stopper is pressed against the sliding surface by the pressing force of the pressing member. The sliding door stop device according to item 6 of the scope of patent application, wherein the pressing member is a leaf spring including a first portion on a side of the stopper in a direction in which the sliding door is opened and closed, and The second part on the other side, when the stopper is in the locked position, the friction engagement portion is locked on the side closer to the closing direction of the sliding door than the pivot center axis of the stopper. When engaged on the sliding surface, the first portion presses the stopper, thereby pressing the friction engaging portion against the sliding surface, and the friction engaging portion is positioned at a ratio of the pivot center axis of the stopper. When the side closer to the opening direction of the sliding door is engaged with the sliding surface, the second portion presses the stopper, thereby pressing the friction engaging portion against the sliding surface. The sliding door stopping device according to item 7 of the scope of patent application, wherein the pressing member is a leaf spring including a first portion located on a side of the stopper in a direction in which the sliding door is opened and closed, and The second part on the other side, when the stopper is in the locked position, the friction engagement portion is locked on the side closer to the closing direction of the sliding door than the pivot center axis of the stopper. When engaged on the sliding surface, the first portion presses the stopper, thereby pressing the friction engaging portion against the sliding surface, and the friction engaging portion is positioned at a ratio of the pivot center axis of the stopper. When the side closer to the opening direction of the sliding door is engaged with the sliding surface, the second portion presses the stopper, thereby pressing the friction engaging portion against the sliding surface. The sliding door stop device according to any one of claims 1 to 4, wherein the sliding surface has an arc-shaped cross-sectional shape, and the friction engagement portion has an arc-shaped along the sliding surface. A concave portion having a curved cross-sectional shape, and when the stopper is in the locked position, the concave portion is in contact with the sliding surface. The sliding door stopping device according to item 5 of the scope of patent application, wherein the sliding surface has an arc-shaped cross-sectional shape, the friction engagement portion has a concave portion curved along the arc-shaped cross-sectional shape of the sliding surface, and when When the stopper is in the locked position, the recessed portion is in contact with the sliding surface. The sliding door stop device as described in item 6 of the scope of patent application, wherein the sliding surface has an arc-shaped cross-sectional shape, the friction engagement portion has a concave portion curved along the arc-shaped cross-sectional shape of the sliding surface, and when When the stopper is in the locked position, the recessed portion is in contact with the sliding surface. The sliding door stop device according to item 7 of the scope of patent application, wherein the sliding surface has an arc-shaped cross-sectional shape, the friction engagement portion has a concave portion curved along the arc-shaped cross-sectional shape of the sliding surface, and when When the stopper is in the locked position, the recessed portion is in contact with the sliding surface. The sliding door stop device according to item 8 of the scope of patent application, wherein the sliding surface has an arc-shaped cross-sectional shape, the friction engagement portion has a concave portion curved along the arc-shaped cross-sectional shape of the sliding surface, and when When the stopper is in the locked position, the recessed portion is in contact with the sliding surface. The sliding door stop device according to item 9 of the scope of patent application, wherein the sliding surface has an arc-shaped cross-sectional shape, the friction engagement portion has a concave portion curved along the arc-shaped cross-sectional shape of the sliding surface, and when When the stopper is in the locked position, the recessed portion is in contact with the sliding surface.