JPH03281879A - Device for stopping sliding-door midway - Google Patents

Abstract

PURPOSE:To easily release a sliding door from an engaged state by providing a presser, ascending/descending body, intermediate link, etc., and stopping the self-running sliding door by bringing the frictional surface of the pressure into close contact with the lower surface of a rail and, at the same time, tilting the presser by applying a force to the sliding door. CONSTITUTION:A midpoint stopping device 3 composed of a presser 4, ascending/descending body 5, intermediate link 6, and spring 7 is housed in the housing 8 of a sliding door 2 hung from and supported by a rail 11 firmly installed to the side face of a wall. The presser 4 is held in a state where it can be elevated, lowered, and tilted through a pin 41 and a frictional member 43 is provided at the upper end of the main body of the presser 4. The sliding door 2 is locked at a desirable intermediate position by bringing the pressure 4 into close contact with the lower surface of the rail 11 by means of the force of the spring 7 after the door 2 is moved to the position. When the sliding door 2 is released from the locked state, the upper end of the presser 4 is tilted by applying a force to the door 2 and the frictional surface 43a of the frictional member 43 is separated from the lower surface 11a of the rail 11. Therefore, the sliding door can be locked and released easily.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is suitable, for example, when it is desired to stop a sliding door or the like configured to be able to self-return to the open position by gravity at a desired intermediate position. This relates to an intermediate stop device for sliding doors used in

[Prior Art] As a sliding door, for example, one shown in FIG. 6 is known. That is, in this device, a rail C is installed on a wall surface having an opening a, and a sliding door d is suspended and supported on this rail C via wheels e, and the wheels e are attached to the rail C. By rolling on the top, the sliding door d can be opened and closed in the width direction. The rail C has a slight downward slope toward the closed position, so that when the sliding door d is released, the sliding door d automatically returns to the closed position due to gravity. In the figure, f is a buffer cylinder that comes into contact with the arm g of the sliding door d before the open position to reduce the speed of the sliding door d.

[Problems to be Solved by the Invention] However, with such a configuration, since the sliding door d closes automatically, it is not possible to leave the sliding door d open at a desired position.

For this reason, various intermediate stopping devices have been considered to keep the sliding door d of this type stopped at a desired intermediate position, but all of the conventional devices operate the locking means by operating a lever or the like. The locking state cannot be released unless the lever is operated again.

Therefore, a person who is unaware of the situation may apply a strong force using L7 to forcibly open or close the half-open sliding door d, and there is a risk that the intermediate stop device may be damaged by such unexpected external force.

The present invention aims to reliably eliminate such inconveniences with a simple configuration.

[Means for Solving the Problems] In order to achieve the above object, the present invention employs the following configuration.

That is, the intermediate stop device for a sliding door according to the present invention is installed in a sliding door whose upper end faces the lower surface of the rail so that it can be opened and closed in the left-right direction, and which is biased so that it can self-return to one end of the movable range. The device includes a presser, an elevating body, and
The pusher is equipped with an intermediate link and a spring, and has a friction surface of a certain width at one end that comes into contact with the lower surface of the rail, and is lifted and lowered by supporting the intermediate part on a member fixed to the sliding door. and is held so as to be tiltable from side to side, and the elevating body is disposed directly below the intermediate portion of the presser so that it can be raised and lowered, and is provided with an operating section, and the intermediate link has an upper end that extends upwardly and downwardly from the presser. The lower end is pivotally connected to the elevating body, and a spring is provided so as to elastically bias the elevating body upward, and the operating portion temporarily moves the elevating body. The friction surface of the pusher can be brought into close contact with the lower surface of the rail by pulling the pusher downward.

If you want to make the presser strong and increase the frictional force between the friction surface and the bottom surface of the rail, fix the presser to the presser body of the sheet metal source and the upper end of this presser body. It is preferable to form a friction surface having a constant width on the friction member.

In particular, when it is desired to simplify the assembly work, it is possible to fix a prismatic pipe-shaped housing to the sliding door, house the elevating body in this housing so as to be able to slide up and down, and have the presser supported by this housing. good.

"Function" With this kind of configuration, if no operating force is applied to the operating part with the pusher, the elevating body, and the intermediate link aligned vertically, the elasticity of the spring will be affected. The force urges the intermediate link and the pusher directly upward, bringing the friction surface of the pusher into close contact with the lower surface of the rail. As a result, the self-propelling of the sliding door is stopped. When force is applied to the sliding door in such a state to move it in either the left or right direction, the upper end of the pusher tilts in the opposite direction to the direction of movement of the sliding door due to the friction between the friction member and the rail, and the intermediate link The upper end of the slider tilts in the direction of movement of the sliding door. Therefore, the friction surface separates from the lower surface of the rail, and the locked state of the sliding door is released. At that time, the elastic biasing force of the spring acts in the direction of tilting the intermediate link and the pusher, so the intermediate link and the pusher are maintained in an inclined state, and the sliding door can be freely moved left and right. can. In this state, the elevating body is at the highest position. When the elevating body is pulled down by applying force to the operation part from this state, the elevating body, the pusher, and the intermediate link are aligned vertically in a straight line. When the operating force is released, the elevating body, intermediate link, and suppressor are pulled upward by the elastic biasing force of the spring.
As described above, the friction surface of the pusher comes into close contact with the lower surface of the rail, and the self-propelling of the sliding door is stopped.

[Example] Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 5.

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

The rail 11 has a length approximately twice the width of the opening 1a, and has a slight downward slope toward the closed position of the sliding door 2.

The sliding door 2 has an upper end 2a facing the lower surface 11a of the rail 11, and wheels 2 provided on both left and right sides of the upper end 2a.
It is suspended and supported by the rail 11 via 1. This sliding door 2 can be opened and closed left and right by wheels 21 rolling on the rails 11. If you let go of your hand halfway through the open position, the wheels 21 will move to the rails 11 due to gravity.
1 and self-returns to the closed position.

The intermediate stop device 3, as shown in FIGS. 1 and 3,
It 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 an intermediate portion 4a fixed to the sliding door 2, via a pin 41 so as to be able to move up and down and tilt left and right. A friction member 43 fixed to the upper end 42a is provided, and the friction member 43 is attached to the lower surface 11 of the rail 11.
A friction surface 43a of a constant width is formed which comes into contact with a.

The elevating body 5 is disposed directly below the intermediate portion 4a of the presser 4 so as to be movable up and down, and has an operating portion 51 at the lower end. This operation part 51 is slightly protruded to the outside from the 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 an upper end 6a connected to a lower end 4b of the presser 4.
The lower end 6b is pivotally attached to the upper end 5a of the elevating body 5 via a pin 62.

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

The housing 8 is shaped like a prismatic pipe and includes a base body 81 with a U-shaped cross section and a thin cover 82 with a U-shaped cross section attached to an opening of the base body 81. The housing 8 supports the presser 4 while being movably housed therein. In the parts of the base body 81 corresponding to the respective pins 41.62, there are elongated holes 81a, 81b that allow the pins 41.62 to move up and down, and windows 81.0 that allow the pins 61 to move up and down and left and right. It is a provision. The intermediate stop device 3 is assembled into a unit with a housing 8, and the housing 8 is fixed inside the sliding door 2 using a plurality of screws (not shown). In addition, in FIG. 2, 83 is a buffer cylinder for contacting the arm 23 of the sliding door 2 and reducing the speed of the sliding door 2 before the open position. Further, 84 is 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 no operating force is applied to the operating portion 51 with the presser 4, the elevating body 5, and the intermediate link 6 aligned vertically, The intermediate link 6 and the presser 4 are urged directly upward by the elastic urging force of the spring 7, and the friction surface 43 of the presser 4
a to the lower surface 11a of the rail 11. the result,
Self-propulsion of the sliding door 2 is stopped. In this situation, sliding door 2
When force is applied to the slider 4 to move it in either the left or right direction, as shown in FIG. While tilting in the opposite direction to direction R, the L end 6a side of the intermediate link 6 tilts in the moving direction of the sliding door 2. Therefore, the friction surface 43a separates from the lower surface 11a of the rail 11, and the locked state of the sliding door 2 is released. At that time, the elastic biasing force of the spring 7 acts in the direction of tilting the intermediate link 6 and the pusher 4, so the inclined state of the intermediate link 6 and the pusher 4 is maintained, and the sliding door 2 is moved left and right. Can be moved freely. In this state, the elevating body 5 is at the highest position. From this state, as shown in FIG. 5, when a force F is applied to the operation part 51 and the elevating body 5 is pulled down, the elevating body 5, the pusher 4, and the intermediate link 6 are aligned vertically. Become. When the operating force F is released, the elevating body 5, the intermediate link 6, and the pusher 4 are pulled up directly by the elastic biasing force of the spring 7, and as described above, the friction surface 43a of the pusher 4 touches the rail 1.
1, and the sliding door 2 is stopped from moving by itself.

Therefore, with such a configuration, by moving the sliding door 2 to a desired intermediate position and then operating the operating section 51 as described above, the sliding door 2 can be opened easily and reliably at the desired intermediate position. If you want to release the locked state of the sliding door 2, you can surely release the locked state by simply moving the sliding door 2 slightly to the left or right. Therefore, even if the half-open sliding door 2 is opened or closed by someone who is unaware of the circumstances, there will be no problem such as excessive external force being applied to the intermediate stop device 3.

Further, the presser 4 includes a presser main body 42 made of sheet metal and a friction member 43 fixed to the upper end 42a of the presser main body 42, and the friction member 43 has a friction surface 43a of a constant width. By forming this, the presser 4 can be made stronger and its durability can be effectively improved. Furthermore, by using a material with high sliding friction for the friction member 43, the friction force between the friction surface 43a and the lower surface 11a of the railco 1 can be effectively increased, so that the sliding door can be reliably stopped at a desired intermediate position. be able to.

Furthermore, if a prismatic pipe-shaped housing 8 is fixed to the sliding door 2, the elevating body 5 is accommodated in the housing 8 so as to be able to slide downwards -L, and the presser 4 is supported by the housing 8. The intermediate stop device 3 can be made into a unit. Therefore, it can be easily assembled to the sliding door 2, and the assembly work can be simplified.

Note that the lower surface of the rail and the friction surface of the friction member may be formed into uneven surfaces that engage with each other, and by doing so, it is possible to effectively avoid slippage between both surfaces. In this way, the sliding door can be reliably stopped at a desired locking position, and the pusher can be reliably tilted when releasing the locking state.

Moreover, the suppressor, the elevating body, etc. are not limited to the shapes shown in the drawings, and can be modified in various ways.

[Effects of the Invention] Since the present invention has the above-described configuration, the sliding door can be reliably and easily left open at a desired intermediate position, and the sliding door can be moved slightly to either the left or right. The locking state of the sliding door can be easily released by pressing the button, and no special release operation is required. As a result, no excessive external force is applied to the intermediate stop device, and its function can be maintained over a long period of time.

In addition, when the presser includes a presser main body made of sheet metal and a friction member fixed to the upper end of the presser main body, and a friction surface of a constant width is formed on the friction member. In addition to making the presser strong,
The friction force between the friction surface and the lower surface of the rail can be effectively increased. Therefore, the durability of the pusher can be increased, and the sliding door can be reliably stopped at a desired intermediate position.

Furthermore, if a prismatic pipe-shaped housing is fixed to the sliding door, the elevating body is housed in the housing so as to be able to slide up and down, and the pusher is supported by the housing, the intermediate stop device can be integrated into a unit. Therefore, it can be easily assembled to the sliding door, and the assembly work can be simplified.

[Brief explanation of the drawing]

1 to 5 show one embodiment of the present invention, in which FIG. 1 is a partially sectional side view, FIG. 2 is an overall front view, FIG. 3 is a front view of the intermediate stop device, and FIG. This figure and FIG. 5 are action explanatory diagrams corresponding to FIG. 3. FIG. 6 is a front view corresponding to FIG. 2 showing a conventional example. 11...Rail 11a...Bottom surface 2...Sliding door 2a...Top end 3...Intermediate stop device
4... Presser 4a... Middle part 4b...
Lower end portion 5... Elevating body 5a... Upper end portion 6.
...Intermediate link 6a...Top end 6b...Bottom end
7...Spring 8...Housing
42... Presser body 43... Friction member 43a
...Friction surface 51...Operation section

Claims (1)

[Claims] 1. An intermediate stop device installed on a sliding door whose upper end faces the lower surface of the rail so that it can be opened and closed in the left and right directions, and which is biased so that it can self-return to one end of the movable range. The pusher is equipped with a pusher, an elevating body, an intermediate link, and a spring. The elevating body is movable up and down and tilted from side to side by being supported by a member fixed to the presser. The link has an upper end pivotally connected to the lower end of the presser and a lower end to the elevating body, and the spring is provided to elastically bias the elevating body upward; An intermediate stop device for a sliding door, characterized in that the operating portion is configured to temporarily pull down the elevating body downward to bring the friction surface of the pusher into close contact with the lower surface of the rail. 2. The presser includes a presser body made of sheet metal and a friction member fixed to the upper end of the presser body, and the friction member has a friction surface of a constant width. The intermediate stop device for a sliding door according to claim 1. 3. Claim 1 or 2, characterized in that a prismatic pipe-shaped housing is fixed to the sliding door, an elevating body is housed in the housing so as to be vertically slidable, and the presser is supported by the housing. Intermediate stop device for sliding doors.