JPH0833086B2 - Sliding door intermediate stop device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is applicable, for example, to a case where a sliding door or the like configured to be capable of self-returning to a closed position by gravity is stopped at a desired intermediate position. The present invention relates to a sliding door intermediate stop device that is preferably used.

2. Description of the Related Art As a sliding door, for example, a sliding door as shown in FIG. 7 is known. That is, in this product, a rail c is installed on a wall surface b having an opening a, and a sliding door d is mounted on the rail c and a wheel e.
And the wheels e are rolled on the rails c so that the sliding doors d
Can be opened and closed in the width direction. The rail c has a slight downward slope toward the closing position, and when released, the sliding door d returns to the closing position by gravity. In the figure, f is a buffer cylinder before the closing position, which is in contact with the arm g of the sliding door d to reduce the speed of the sliding door d.

[Problems to be Solved by the Invention] However, with such a configuration, the sliding door d is automatically closed, and thus the sliding door d cannot be left open at a desired position.

For this reason, various intermediate stop devices for stopping the sliding door d of such a system at a desired intermediate position have been considered, but all of the conventional devices operate the locking means by lever operation or the like. The sliding door d is stopped, and the locked state cannot be released unless the lever is operated again.

Therefore, a person who does not know the circumstances may apply a strong force to open and close the half-open sliding door d by force, and the unexpected external force may damage the intermediate stop device.

An object of the present invention is to eliminate such an inconvenience with a simple structure and surely.

[Means for Solving the Problems] The present invention employs the following configuration in order to achieve such an object.

That is, the intermediate stop device of the sliding door according to the present invention is provided in the sliding door which is provided so as to be openable and closable in the left-right direction with its upper end facing the lower surface of the rail and biased so as to be capable of self-returning to the one end side of the movable range. Is an intermediate stop device,
A holding body, a pusher uprighting means, a pusher operating means, and a forced retreating means are provided, and the pusher has a friction surface of a certain width that abuts the lower surface of the rail at the upper end, and the lower end. The shaft provided on the side is held by the holding body so that it can be lifted and tilted left and right, and the holding body is arranged so as to elastically hold the shaft of the pressing element from the left and right. Has an upper recess and a lower recess at two different positions, and each recess holds the shaft of the presser in a modest and stable manner. The presser uprighting means elastically biases the presser in the upright direction. The pusher operating means is for forcibly moving the shaft of the pusher from the lower concave portion to the upper concave portion, and is provided with a manual operating portion, and the forced retracting means is provided. Is triggered by the downward displacement of the shaft due to the tilting of the pusher. It is provided so as to forcibly move the shaft of the pusher from the upper concave portion to the lower concave portion against the sexual biasing force, and the temporary pushing force of the pusher is applied to the manual operating portion. It is characterized in that the shaft is pushed up from the lower concave portion to the upper concave portion so that the friction surface of the pressing member can be brought into close contact with the lower surface of the rail.

If you want to make the pusher strong and increase the frictional force between the friction surface and the bottom surface of the rail, secure the pusher to the sheet metal pusher body and the upper end of this pusher body. And a friction surface having a constant width is formed on the friction member.

If you want to make the structure of the holding body simple, the holding body should have an integrated lower end, and the upper end should be elastically deformed to the left and right. It is better to form each.

In order to reliably move the shaft of the pusher from the upper concave portion to the lower concave portion when a force in the opening / closing direction is applied to the sliding door, the forced evacuation means causes the downward displacement of the shaft due to the tilting of the pusher to cause the above-mentioned displacement. A spring for forcibly moving the shaft of the pusher from the upper recess to the lower recess against the elastic biasing force of the holding body, and the elasticity of the holding body triggered by the downward displacement of the shaft due to the tilting of the pressing body. A cam surface for forcibly moving the shaft of the pressing element from the upper concave portion to the lower concave portion by utilizing a biasing force may be provided.

Especially, if you want to simplify the structure of the forced evacuation means,
The forcible retracting means is constituted by a spring for forcibly moving the shaft of the pressing element from the upper concave portion to the lower concave portion against the elastic biasing force of the holding body triggered by the downward displacement of the shaft due to the tilting of the pressing element. Good.

In particular, when it is desired to simplify the assembly work, a prismatic pipe-shaped housing is fixed to a sliding door, and a holding body, a pusher uprighting means, a pusher operating means, and a forced retracting means are housed in this housing. Good.

[Operation] With such a configuration, when the pusher is in the upright posture and its shaft is held in the upper recess of the holding body, the friction surface of the pusher contacts the lower surface of the rail. Contacted. As a result, the self-propelled sliding door is stopped. When a force is applied to the sliding door in such a state to force the sliding door to move in either of the left and right directions, the pressing element tilts in the direction opposite to the moving direction of the sliding door due to the friction between the friction surface and the rail lower surface. Since the friction surface has a constant width in the left-right direction, when the pusher tilts, its axis is slightly deviated from the upper concave portion of the holding body toward the lower concave portion. The forced evacuation means is forced to move the shaft of the pusher from the upper concave portion to the lower concave portion by being triggered by the downward displacement of the shaft due to the tilting of the pusher. As a result, the entire pusher moves downward, the friction surface separates from the lower surface of the rail, and the locked state of the sliding door is released. Further, since the pressing element erecting means applies an elastic biasing force to the pressing element in the standing direction, when the friction surface is separated from the lower surface of the rail, the pressing element is corrected to the standing posture. When a force is applied to the manual operation part of the pusher operating means from such a state to forcibly move the pusher shaft from the lower concave portion to the upper concave portion, as described above, the friction surface of the pusher closely contacts the lower surface of the rail. However, the self-propelled sliding door is stopped.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

A rail 11 is fixed to one side surface 1b of the wall 1 having an opening 1a, and an intermediate stop device 3 is provided on a sliding door 2 suspended and supported by the rail 11.

The rail 11 has a length dimension about twice the width dimension of the opening 1a, and has a slight downward inclination toward the closing position direction of the sliding door 2.

The sliding door 2 has an upper end 2a opposed to a lower surface 11a of the rail 11, and is suspended and supported by the rail 11 via wheels 21 provided on both left and right sides of the upper end 2a. This sliding door 2
The wheels 21 can be opened and closed to the left and right by rolling on the rails 11, and when the hands are released in the middle of the open position, gravity causes the wheels 21 to roll on the rails 11 to close. It is designed to self-return to the position.

The intermediate stop device 3 includes a pusher 4, a holding body 5, a pusher uprighting means 6, a pusher operating means 7, and a forced retracting means 8.

The presser 4 is supported by the holding body 5 via a shaft 41 provided on the lower end side so as to be vertically movable and tiltable left and right, and is fixed to a presser body 42 made of sheet metal and an upper end 42a of the presser body 42. The friction member 43 is provided with a friction surface 43a having a constant width that abuts the lower surface 11a of the rail 11.

The holding body 5 is fixed to the housing 9 fixed to the sliding door 2, and is arranged at a position where the shaft 41 of the pressing element 4 can be held from the left and right. This holding body 5 has a lower end portion 5a integrated, and the upper end portion 5b side is elastically deformed to the left and right,
An upper concave portion 5d and a lower concave portion 5e are formed at different positions in the vertical direction on the facing surface 5c on the upper end portion 5b side.

The pusher uprighting means 6 is for elastically biasing the pusher 4 in the upright direction, and is provided on both side surfaces 6a parallel to the lower end of the pusher body 42 and inside the holding body 5. And the parallel holding surfaces 6b facing each other.

The pusher operating means 7 includes a rod 71 and a manual operating portion 72, and the upper end of the rod 71 is pivotally attached to the shaft 41 of the pusher 4. The manual operation part 72 is slightly projected to the outside from the window 22 provided on the surface of the sliding door 2, and is fixed after the rod 71 and the like are housed in the sliding door 2.

The forced evacuation means 8 resists the elastic urging force of the holding body 5 from the downward displacement of the shaft 41 caused by the tilting of the pressing element 4 and moves the shaft 41 of the pressing element 4 from the upper concave portion 5d to the lower concave portion 5e. The spring 81 and the cam surface 82
It has. The spring 81 is a tension coil spring, one end of which is fixed to the lower end of the rod 71,
The other end is fixed to the housing 9. The cam surface 82 is formed between the upper concave portion 5d and the lower concave portion 5e of the holding body 5 and has a narrow upper portion.

The housing 9 is in the form of a prismatic pipe having a base 91 having a U-shaped cross section and a thin lid body 92 having a U-shaped cross section and attached to the opening thereof. The holding body 5 and the rod are provided inside. 71
Etc. are stored. Then, this intermediate stop device 3
The housing 9 is assembled to form a unit, and the housing 9 is fixed inside the sliding door 2 by using a plurality of screws 93 or the like. Incidentally, 94 is a cushioning cylinder for contacting the arm 23 of the sliding door 2 to reduce the speed of the sliding door 2 before the closing position. Reference numeral 95 denotes a thin cover fixed to the upper end of the rail 11 via a screw or the like (not shown).

According to such a configuration, as shown in FIG. 4, the pusher 4 is in the upright posture, and the shaft 41 of the pusher 4 is in the upper concave portion of the holding body 5.
When it is stably held at 5d, the friction surface 43 of the presser 4 is
The a contacts the lower surface 11a of the rail 11. As a result, sliding door 2
Self-propelled is stopped. From such a state, as shown in FIG. 5, when a force is applied to the sliding door 2 to forcibly move it to either the left or right direction, the pressing member 4 is moved by the friction between the friction member 43 and the rail 11. Inclining in a direction opposite to the moving direction R of. Since the friction surface 43a has a constant width in the left-right direction, when the pusher 4 tilts, the shaft 41 thereof is slightly displaced from the upper recess 5d of the holding body 5 toward the lower recess 5e. The forced evacuation means 8 uses the downward displacement of the shaft 41 due to the tilting of the pusher 4 as a trigger to move the shaft 41 of the pusher 4 from the upper recess 5d to the lower recess 5d.
Forced to move to 5e. As a result, the entire pusher 4 moves downward, the friction surface 43a moves away from the lower surface 11a of the rail 11,
The locked state of the sliding door 2 is released. Further, since the elastic force of the pusher upright means 6 acts on the pusher 4 in the upright direction, when the friction surface 43a is separated from the lower surface 11a of the rail 11, as shown in FIG. 4 is corrected to a standing posture. From this state, the manual operation part of the pusher operating means 7
A force is applied to 72 to move the shaft 41 of the presser 4 from the lower recess 5e to the upper recess 5d.
When the sliding door 2 is forcibly moved to, the friction surface 43a of the pressing element 4 comes into close contact with the lower surface 11a of the rail 11 and the free-running of the sliding door 2 is stopped.

Therefore, with such a structure, the sliding door 2
After moving to the desired intermediate position, by pushing up the manual operation part 72 as described above, the sliding door 2 can be left open at the desired intermediate position simply and reliably.
If you want to release the locked state of the sliding door 2,
It is possible to reliably release the locked state by simply moving the left or right a little. Therefore, even if the half-open sliding door 2 is opened and closed by a person who does not know the circumstances, the intermediate stop device 3 does not have an undesired external force.

The pressing element 4 includes a pressing element main body 42 made of sheet metal and a friction member 43 fixed to an upper end 42a of the pressing element main body 42. The friction member 43 has a fixed width friction surface 43a.
Is formed, the pressing element 4 can have high strength, and its durability can be effectively increased. Moreover, by using a material having high sliding friction for the friction member 43,
Since the frictional force between 43a and the lower surface 11a of the rail 11 can be effectively increased, the sliding door can be reliably stopped at the desired intermediate position.

Further, the holding body 5 is made such that the lower end portion 5a is integrated so that the upper end portion 5b side is elastically deformed to the left and right, and the upper end portion
By forming the upper concave portion 5d and the lower concave portion 5e on the facing surface 5c on the 5b side, the structure can be simplified and the increase in the number of parts can be suppressed.

When the forced retreat means 8 is constituted by a spring 81 for urging the shaft 41 of the pusher 4 downward, and a cam surface 82 for connecting the upper recess 5d and the lower recess 5e of the holding body 5 continuously, Four
The shaft 41 of the pressing element 4 can be reliably moved from the upper recess 5d to the lower recess 5e by the tilting of the.

If the prismatic pipe-shaped housing 9 is fixed to the sliding door 2 and the holding body 5 and the like are housed and supported in the housing 9, the intermediate stop device 3 can be unitized. Therefore, the assembling to the sliding door 2 can be easily performed, and the assembling work can be simplified.

It should be noted that it may be considered that the lower surface of the rail and the friction surface of the friction member are uneven surfaces that mesh with each other. By doing so, it is possible to more effectively avoid slippage between the two surfaces. With this configuration, the sliding door can be reliably stopped at the desired locking position, and the pusher can be reliably tilted when the locked state is released.

Further, the pressing element, the holding body, etc. are not limited to the shapes shown in the drawings, and various modifications are possible.

EFFECTS OF THE INVENTION Since the present invention has the above-described configuration, the sliding door can be left open reliably and easily at a desired intermediate position, and the sliding door can be slightly moved to either side. Therefore, the locked state of the sliding door can be released easily, and no special releasing operation is required. As a result, the external force is not applied to the intermediate stop device, and the function can be maintained for a long period of time.

Further, in the case where the presser comprises a presser body made of sheet metal and a friction member fixed to the upper end of the presser body, and a friction surface having a constant width is formed on the friction member. In addition, it is possible to increase the strength of the pressing element and effectively increase the frictional force between the friction surface and the lower surface of the rail. Therefore, the durability of the pressing element can be enhanced, and the sliding door can be reliably stopped at a desired intermediate position.

Furthermore, the structure can be simplified if the holding body is made integral with the lower end, the upper end is elastically deformed to the left and right, and the upper concave portion and the lower concave portion are respectively formed on the facing surfaces on the upper end side. At the same time, an increase in the number of parts can be suppressed.

Further, when the forcible retracting means is composed of a spring for urging the shaft of the pusher downward and a cam surface for connecting the upper concave portion and the lower concave portion of the holding body to each other, the tilting of the pusher triggers the pressing. It is possible to reliably move the axis of the child from the upper concave portion to the lower concave portion and more reliably release the locked state of the sliding door. If the forced evacuation means is composed of a spring that urges the shaft of the pusher downward, the structure can be made particularly simple.

Further, when the prismatic pipe-shaped housing is fixed to the sliding door and the holding body or the like is accommodated and supported in the housing, the intermediate stop device can be unitized. Therefore, it can be easily assembled to the sliding door, and the assembling work can be simplified.

[Brief description of drawings]

1 to 6 show an embodiment of the present invention. FIG. 1 is a side view of a partial cross section, FIG. 2 is a front view of the whole, and FIG. 3 is a front view of an intermediate stop device. FIG. 6 to FIG. 6 are explanatory views of the operation. FIG. 7 is a front view corresponding to FIG. 2 showing a conventional example. 11 …… rail, 11a …… bottom surface 2 …… sliding door, 2a …… upper end 3 …… intermediate stop device, 4 …… presser 5 …… holding body, 5a …… lower end part 5b …… upper end part, 5c …… Opposing surface 5d …… Upper recess, 5e …… Lower recess 6 …… Presser upright means, 7 …… Presser operating means 8 …… Forced retracting means, 9 …… Housing 41 …… Shaft, 42 …… Presser body 42a …… upper end, 43 …… friction member 43a …… friction surface, 72 …… manual operation part 81 …… spring, 82 …… cam surface

Claims (6)

[Claims] 1. An intermediate stop device mounted on a sliding door which is provided so as to be openable and closable in the left-right direction with its upper end facing the lower surface of the rail and biased so as to be capable of self-returning to one end side of a movable range, The pusher includes a pusher, a holding body, a pusher uprighting means, a pusher operating means, and a forced retracting means, and the pusher has a friction surface of a certain width that abuts on the lower surface of the rail at the upper end. A shaft provided on the lower end side is held by the holding body so that it can be lifted and tilted left and right, and the holding body is arranged so as to elastically hold the shaft of the pressing element from the left and right. In this structure, an upper recess and a lower recess are provided at two different positions in the upper and lower directions, and the shaft of the presser is held in a modest and stable manner in each recess. It is configured to be elastically urged to Is for forcibly moving the shaft of the pusher from the lower concave portion to the upper concave portion, and is provided with a manual operation unit.The forced retraction means is configured to prevent downward displacement of the shaft due to tilting of the pusher. It is provided so as to be able to forcibly move the shaft of the pressing element from the upper concave portion to the lower concave portion against the elastic biasing force of the holding body as a trigger, and is temporarily applied to the manual operation portion. An intermediate stopping device for a sliding door, characterized in that the shaft of the pusher is pushed up from the lower concave portion to the upper concave portion by an operating force so that the friction surface of the pusher can be brought into close contact with the lower surface of the rail. 2. The pressing element comprises a pressing element body made of sheet metal, and a friction member fixed to the upper end of the pressing element body.
The intermediate stop device for a sliding door according to claim 1, wherein a friction surface having a constant width is formed on the friction member. 3. A holding body, wherein a lower end portion is integrated, the upper end portion is elastically deformed to the left and right, and an upper concave portion and a lower concave portion are formed on opposing surfaces on the upper end portion side, respectively. The intermediate stop device for the sliding door according to claim 1. 4. The force retracting means forcibly pushes the shaft of the pressing element from the upper concave portion to the lower concave portion against the elastic biasing force of the holding body, triggered by the downward displacement of the width caused by the tilting of the pressing element. And a cam for forcibly moving the shaft of the pressing element from the upper concave portion to the lower concave portion by utilizing the elastic biasing force of the holding body triggered by the downward displacement of the shaft caused by the tilting of the pressing element. The intermediate stop device for a sliding door according to claim 1, further comprising a surface. 5. A force retracting means forcibly pushes the shaft of the pusher from the upper recess to the lower recess against the elastic biasing force of the holding body, triggered by the downward displacement of the shaft due to the tilting of the presser. The intermediate stop device for a sliding door according to claim 1, wherein the intermediate stop device is constituted by a spring that is moved to the right. 6. A prismatic pipe-shaped housing is fixed to a sliding door, and a holding body, a pusher uprighting means, a pusher operating means, and a forced retreating means are housed in the housing. The intermediate stop device for the sliding door according to 3, 4, or 5.