JPH0833085B2 - 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.

[Prior Art] As a sliding door, for example, one shown in Fig. 6 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 surely solve such a disadvantage with a simple configuration.

[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 one end side of the movable range. The presser includes a pusher, an elevating body, an intermediate link, and a spring, and the presser has a friction surface of a certain width that abuts the lower surface of the rail at the upper end. The lifting and lowering body is supported by a member fixed to a sliding door so that it can be raised and lowered and tilted left and right. The intermediate link has an upper end pivotally attached to the lower end of the pusher and a lower end pivotally attached to the elevating body, and the spring is provided so as to elastically bias the elevating body upward. And the operation unit temporarily moves the lifting body. By pulling towards and characterized by being configured so as to contact the friction surface of the pushing member to 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.

In particular, in order to simplify the assembling work, a prismatic pipe-shaped housing is fixed to a sliding door, and an elevating body is vertically slidably accommodated in the housing, and a pressing element is supported by the housing. Good.

[Operation] With such a configuration, when the pressing member, the lifting body, and the intermediate link are aligned in the vertical direction and no operating force is applied to the operating portion, the elastic force of the spring is applied. The intermediate link and the pressing element are urged right above by the force, and the friction surface of the pressing element is brought into close contact with the lower surface of the rail. as a result,
Self-propelled sliding doors are stopped. When a force is applied to the sliding door in such a state to move the sliding door in either the left or right direction, the upper end side of the pressing element tilts in the direction opposite to the moving direction of the sliding door due to the friction between the friction member and the rail, and the intermediate link. The upper end of the tilts in the moving direction of the sliding door. Therefore, the friction surface is separated from the lower surface of the rail, and the locked state of the sliding door is released. At that time, since the elastic biasing force of the spring acts in the direction of tilting the intermediate link and the pusher, the intermediate link and the pusher are maintained in the inclined state, and the sliding door can be freely moved left and right. it can. In this state, the lifting body is in the most raised position. When a force is applied to the operating portion in this state to pull down the lifting body, the lifting body, the pressing element, and the intermediate link are aligned in the vertical direction. When the operating force is released, the elastic urging force of the spring pulls the lifting body, the intermediate link, and the pusher upward, and, as described above, the friction surface of the pusher comes into close contact with the lower surface of the rail, and the sliding door is self-propelled. Is stopped.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

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.

As shown in FIGS. 1 and 3, the intermediate stop device 3 includes a presser 4, an elevating body 5, an intermediate link 6, and a spring 7.

The presser 4 is held by a housing 8 which is a member having the intermediate portion 4a fixed to the sliding door 2 so as to be able to move up and down and tilt right and left via pins 41. The presser main body 42 made of sheet metal and the presser main body 42 A friction member 43 fixed to the upper end 42a is provided, and the friction member 43 is formed with a friction surface 43a having a constant width to contact the lower surface 11a of the rail 11.

The elevating body 5 is arranged directly below the intermediate portion 4a of the pressing member 4 so as to be able to ascend and descend, and has an operating portion 51 at the lower end.
The operating portion 51 is slightly projected to the outside from a window 22 provided on the surface of the sliding door 2, and is fixed after the elevating body 5 is housed in the sliding door 2.

The intermediate link 6 has its upper end 6a pivotally attached to the lower end 4b of the presser 4 via a pin 61, and the lower end 6b is the upper end of the elevating body 5.
It is pivotally attached to pin 5a via pin 62.

The spring 7 is a tension coil spring, one end 7a of which is fixed to the housing 8 and the other end 7b of which is fixed to the lower end 5b of the elevating body 5.

The housing 8 is in the form of a prismatic pipe having a base body 81 having a U-shaped cross section and a thin lid body 82 having a U-shaped cross section and attached to the opening thereof. The housing 8 is movably accommodated and the housing 8 supports the pressing element 4. Each of the pins 41 on the base 81,
The portions corresponding to 62 are provided with long holes 81a and 81b that allow the pins 41 and 62 to move up and down, and windows 81c that allow the pins 61 to move up and down and left and right. The intermediate stop device 3 is assembled into a housing 8 to form a unit, and the housing 8 is fixed inside the sliding door 2 using a plurality of screws or the like (not shown). The second
In the figure, 83 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 84 denotes a thin cover fixed to the upper end of the rail 11 via screws or the like (not shown).

According to such a configuration, as shown in FIG. 3, when the pressing member 4, the elevating body 5, and the intermediate link 6 are aligned in the vertical direction and no operating force is applied to the operating portion 51, The intermediate link 6 and the pressing element 4 are urged right above by the elastic urging force of the spring 7, and the friction surface 43a of the pressing element 4 is
Is closely attached to the lower surface 11a of the rail 11. As a result, sliding door 2
Self-propelled is stopped. When a force is applied to the sliding door 2 from such a state to move the sliding door 2 in either the left or right direction, as shown in FIG. 4, due to the friction between the lower surface 11a of the rail 11 and the friction surface 43a of the friction member 43, the pusher 4 is pressed. The upper end side of the intermediate link 6 tilts in the direction opposite to the moving direction R of the sliding door 2, and the upper end 6a side of the intermediate link 6 tilts in the moving direction of the sliding door 2. Therefore, the friction surface 43a is separated from the lower surface 11a of the rail 11, and the locked state of the sliding door 2 is released. At that time, since the elastic biasing force of the spring 7 acts in a direction of tilting the intermediate link 6 and the pusher 4, the inclined state of the intermediate link 6 and the pusher 4 is maintained, and the sliding door 2 is moved to the left and right. It can be moved freely. In this state, the lift 5 is at the most raised position. From this state, as shown in FIG. 5, when a force F is applied to the operating portion 51 to lower the lifting body 5, the lifting body 5, the pusher 4, and the intermediate link 6 are aligned in the vertical direction. Become. When the operating force F is released, the elastic urging force of the spring 7 pulls the lifting body 5, the intermediate link 6, and the pusher 4 straight up, and as described above, the pusher 4 is pressed.
The friction surface 43a of the rail 3 comes into close contact with the lower surface 11a of the rail 11, and the self-propelled sliding door 2 is stopped.

Therefore, with such a structure, the sliding door 2
By moving the operation section 51 to the desired intermediate position as described above, the sliding door 2 can be left open at the desired intermediate position simply and reliably. Also,
When it is desired to release the locked state of the sliding door 2, the locked state can be surely released only by slightly moving the sliding door 2 to the left or right. 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, if a housing 8 in the form of a prismatic pipe is fixed to the sliding door 2 and the elevating body 5 is housed in the housing 8 so as to be slidable up and down, and the housing 8 supports the presser 4, an intermediate stop is achieved. The device 3 can be unitized. Therefore, the assembling to the sliding door 2 can be easily performed, and the assembling work can be simplified.

Note that the lower surface of the rail and the friction surface of the friction member may be an uneven surface that meshes with each other, and by doing so, slippage between both surfaces can be effectively avoided. 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 elevating body and the like 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, fix the prismatic pipe-shaped housing to the sliding door,
When the elevating body is slidably housed in the housing and the pressing element is supported by the housing, the intermediate stopping device can be unitized. For this reason, the assembly to the sliding door can be easily performed, and the assembling work can be simplified.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG. 5 show an embodiment of the present invention, FIG. 1 is a side view with a partial cross section, FIG. 2 is a front view of the whole, and FIG. FIG. 4 is a front view of the apparatus, and FIGS. 4 and 5 are operation explanatory views corresponding to FIG. FIG. 6 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 …… pressor 4a …… intermediate part, 4b …… lower end part 5 …… elevator, 5a …… Upper end part 6 …… Middle link, 6a …… Upper end 6b …… Lower end, 7 …… Spring 8 …… Housing, 42 …… Presser body 43 …… Friction member, 43a …… Friction surface 51 …… Operating part

Claims (3)

[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 of its movable range, The presser, the elevating body, the intermediate link, and the spring are provided. The presser has a friction surface of a constant width that abuts the lower surface of the rail at the upper end, and the middle part is fixed to the sliding door. It is supported by a member and is held so that it can be raised and lowered and tilted left and right.The lifting body is arranged so that it can be raised and lowered just below the intermediate portion of the presser, and is provided with an operating portion. The upper end is pivotally attached to the lower end of the pusher, and the lower end is pivotally attached to the elevating body, and the spring is provided so as to elastically bias the elevating body upward. Temporarily lower the lifting body by Intermediate stopping device of the sliding door, characterized by being configured so as to contact the friction surface of the indenter on 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 prismatic pipe-shaped housing is fixed to a sliding door, and an elevating body is slidably housed in the housing, and the housing supports a pressing element. Or the intermediate stop device of the sliding door according to 2.