JPH03286079A - Intermediate stop device for sliding door - Google Patents

Abstract

PURPOSE:To easily release the engagement state of a sliding door by installing a nipping body for elastically nipping the shaft of a pressing element contacting a rail, pressing element erecting means, pressing element operating means, and a compulsory retreat means for compulsorily retreating the pressing element. CONSTITUTION:When a sliding door 2 is shifted in the left or right direction, a pressing element 4 is inclined in the reverse direction to the shift of the sliding door 2 by the friction between a frictional member 43 and the undersurface 11a of a rail. Then, the shaft 41 of the pressing element 4 slightly deflects to the lower recessed part 5e side from the upper recessed part 5d of a nipping body 5. Then, a compulsory retreat means 8 performs compulsory shift from the upper recessed part 5d to the lower recessed part 5e. Further, the whole of the pressing element 4 shifts downward, and a frictional surface 43a is separated from the undersurface 11a of a rail 11, and the stop state of the sliding door 2 is released.

Description

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

[Prior Art] As a sliding door, for example, one shown in FIG. 7 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 closed 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 six doors d open at a desired position.

For this reason, various intermediate stopping devices have been considered to stop the sliding door d of this type at a desired intermediate position, but all of the conventional devices operate the locking means by operating a lever 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 is unaware of the situation may apply strong force in an attempt 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. An intermediate stop device comprising a pusher, a clamping body, a pusher raising means, a pusher operating means, and a forced evacuation means, the pusher having an upper end that abuts the lower surface of the rail. It has a friction surface of a constant width, and is held so that it can be raised and lowered and tilted from side to side by having a shaft provided on the lower end side held by the clamping body, and the clamping body elastically clamps the shaft of the presser from the left and right. It has an upper concave part and a lower concave part at two different positions vertically, and each concave part holds the shaft of the presser stably in a moderate manner, and the presser can be raised up. The means is configured to be able to elastically bias the presser in the upright direction, and the presser operating means includes:
The shaft of the presser is forcibly moved from the lower recess to the upper recess, and includes a manual operation section, and the forced retraction means is triggered by the downward displacement of the shaft due to the tilting of the presser. The pusher is provided so that the shaft of the presser can be forcibly moved from the upper recessed portion to the lower recessed portion against the elastic clamping force of the clamping body, and by the temporary operating force applied by the manual operating portion. The present invention is characterized in that the shaft of the presser is pushed up from the lower recess to the upper recess so that the friction surface of the presser can be brought into close contact with the lower surface of the rail.

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

If you want to simplify the structure of the clamping body, the lower end of the clamping body should be integrated, the upper end side can be elastically deformed from side to side, and an upper recess and a lower recess can be formed on the opposing surfaces of the upper end. It is a good idea to form each.

In order to reliably move the shaft of the pusher from the upper recess to the lower recess when force is applied in the opening/closing direction to the sliding door, a forced evacuation means is required.
a spring that forcibly moves the shaft of the presser from the upper part to the lower recessed part against the elastic clamping force of the clamping body when the shaft is deflected downward due to the tilting of the presser; and a cam surface that forcibly moves the shaft of the presser from the upper recessed part to the lower recessed part using the elastic clamping force of the clamping body triggered by the downward displacement of the shaft accompanying the tilting of the presser. It's good to do that.

In particular, when it is desired to simplify the structure of the forced evacuation means, the forcible evacuation means can be used to move the shaft of the presser into the upper recess by resisting the elastic biasing force of the clamping body, triggered by the downward displacement of the shaft due to the tilting of the suppressor. It is preferable to use a spring that forcibly moves it from the bottom to the lower recess.

In particular, when it is desired to simplify the assembly work, a prismatic pipe-shaped housing is fixed to the sliding door, and a clamping body, a pusher raising means, a pusher operating means, and a forced evacuation means are accommodated in the housing. Good.

[Function] With this configuration, when the pusher is in the upright position and its shaft is held in the upper recess of the clamp, the friction surface of the pusher will come into contact with the lower surface of the rail. be touched. As a result, the self-propelling of the sliding door is stopped. If force is applied to the sliding door in this state to forcibly move it in either the left or right direction, the pusher will tilt in the opposite direction to the moving direction of the sliding door due to friction between the friction surface and the lower surface of the rail. Since the friction surface has a constant width in the left and right direction, when the presser tilts,
The axis will be slightly deviated from the upper recess of the clamping member toward the lower recess. The forced retraction means forcibly moves the shaft of the presser from the upper recess to the lower recess in response to downward displacement of the shaft due to the tilting of the presser. 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. Furthermore, since an elastic biasing force is applied to the pusher in the rising direction by the pusher rising means, when the friction surface separates from the lower surface of the rail, the pusher is corrected to the upright position. If force is applied to the manual operation part of the pusher operating means in such a state to forcibly move the shaft of the pusher from the lower recess to the upper recess, the friction surface of the pusher will come into close contact with the lower surface of the rail, as described above. However, the self-propulsion of the sliding door is stopped.

[Example] Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 6.

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 the wheels 2 rolling on the rails 11. If you let go of your hand in the middle of 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 includes a pusher 4, a clamping body 5, a pusher raising means 6, a pusher operating means 7, and a forced retraction means 8.

The presser 4 is supported by the clamping body 5 via a shaft 41 provided on the lower end side so that it can be moved up and down and tilted left and right, and includes a presser main body 42 made of sheet metal and an upper end 42a of the presser main body 42.
and a friction member 43 fixed to the
A friction surface 43a having a constant width is formed in contact with the lower surface 11a of the rail 11.

The clamping body 5 is fixed to a housing 9 fixed to the sliding door 2, and is arranged at a position where it can clamp the shaft 41 of the presser 4 from the left and right sides. This clamping body 5 has a lower end portion 5a integrated, and the upper end portion 5b side is elastically deformed to the left and right, and an upper recessed portion 5d and a lower recessed portion 5 are formed on the opposing surface 5c of the upper end portion 5b side.
e and are formed at different positions vertically.

The presser rising means 6 is for elastically biasing the presser 4 in the rising direction, and is provided on both parallel side surfaces 6a provided at the lower end of the presser main body 42 and on the inside of the clamp body 5. and opposing parallel clamping surfaces 6b.

The pusher operating means 7 includes a rod 71 and a manual operation section 72, and the upper end of the rod 71 is pivotally connected to the shaft 41 of the pusher 4. The manual operation part 72 is slightly protruded 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 stored in the sliding door 2.

The forced retraction means 8 moves the shaft 41 of the presser 4 from the upper recess 5d to the lower recess 5e against the elastic clamping force of the clamping body 5 triggered by the downward displacement of the shaft 41 accompanying the tilting of the presser 4. This is for forcibly moving the spring 81 and
A cam surface 82 is provided. The spring 81 is a tension coil spring, and has one end fixed to the lower end of the rod 71 and the other end fixed to the housing 9. The cam surface 82 is formed between the upper recess 5d and the lower recess 5e of the clamping body 5, and has a narrow upper side.

The housing 9 is shaped like a prismatic pipe and includes a base body 91 having a U-shaped cross section, and a thin cover body 92 having a U-shaped cross section attached to an opening of the base body 91, and has the clamping body 5 and the rod inside. 71 etc. is stored. However, this intermediate stop device 3
The housing 9 is assembled into a unit, and the housing 9 is fixed inside the sliding door 2 using a plurality of screws 93. Note that 94 is a buffer cylinder that comes into contact with the arm 23 of the sliding door 2 before the closed position to reduce the speed of the sliding door 2. Further, 95 is a thin cover fixed to the upper end of the rail 11 via screws or the like (not shown).

According to such a structure, as shown in FIG. The friction surface 43a is brought into contact with the lower surface 11a of the rail 11. As a result, the self-propelling of the sliding door 2 is stopped. From this situation,
As shown in FIG. 5, when force is applied to the sliding door 2 to forcibly move it in either the left or right direction, the pusher 4 is moved in the moving direction R of the sliding door 2 due to the friction between the friction member 43 and the rail 11.
tilt in the opposite direction. Since the friction surface 43a has a constant width in the left-right direction, when the presser 4 is tilted, its shaft 41 is slightly deviated from the upper recess 5d of the clamping body 5 toward the lower recess 5e. The forced retraction means 8 forcibly moves the shaft 41 of the presser 4 from the upper recess 5d to the lower recess 5e, triggered by the downward displacement of the shaft 41 due to the tilting of the presser 4. As a result, the entire presser 4 moves downward and the friction surface 4
3a separates from the lower surface 11a of the rail 11, and the locked state of the sliding door 2 is released. Further, since an elastic biasing force is applied to the pusher 4 in the rising direction by the pusher rising means 6, when the friction surface 43a separates from the lower surface 11a of the rail 11, the pusher moves as shown in FIG. 4 is corrected to a standing posture. From this state, the manual operation section 72 of the pusher operation means 7
When force is applied to forcefully move the shaft 41 of the presser 4 from the lower recess 5e to the upper recess 5d, as described above, the presser 4
The friction surface 43a of the sliding door 2 comes into close contact with the lower surface 11a of the rail 11, and the self-propelling of the sliding door 2 is stopped.

Therefore, with such a configuration, by moving the sliding door 2 to a desired intermediate position and then pushing up the manual operation part 72 as described above, the sliding door 2 can be opened easily and reliably at the desired intermediate position. You can leave it as is.

In addition, if you want to release the locked state of sliding door 2,
The locked state can be reliably released by simply moving the button 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 sheet-metal type presser main body 42 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 rail 11 can be effectively increased, so that the sliding door can be reliably stopped at a desired intermediate position. be able to.

Furthermore, if the lower end portion 5a of the clamping body 5 is integrated, the upper end portion 5b side is elastically deformed from side to side, and the upper recessed portion 5d and the lower recessed portion 5e are formed on the opposing surface 5C of the upper end portion 5b side, respectively. The structure can be simplified and an increase in the number of parts can be suppressed.

The forced retraction means 8 includes a spring 81 that urges the shaft 41 of the pusher 4 downward, and an upper recess 5d and a lower recess 5e of the clamping body 5.
When configured with a cam surface 82 that connects the
The shaft 41 of the presser 4 can be reliably moved from the upper recess 5d to the lower recess 5e by the tilting of the presser 4.

In addition, a prismatic pipe-shaped housing 9 is fixed to the sliding door 2,
If the clamping body 5 and the like are accommodated and supported within the housing 9, the intermediate stop device 3 can be made into a unibody structure. Therefore, the assembly into the six doors 2 can be easily performed, and the assembly work can be simplified.

It is also conceivable that the lower surface of the rail and the friction surface of the friction member are formed into uneven surfaces that engage with each other. By doing so, it is possible to more effectively avoid slipping between the two 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 presser, the clamping 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 unreasonable 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 sheet-metal type presser body and a friction member fixed to the upper end of the presser body, and the friction member forms a friction surface of a constant width. 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 the lower end of the clamping body is integrated, the upper end can be elastically deformed from side to side, and an upper recess and a lower recess are formed on the opposing surfaces of the upper end, the structure can be simplified. At the same time, an increase in the number of parts can be suppressed.

In addition, if the forced evacuation means is composed of a spring that urges the shaft of the presser downward and a cam surface that connects the upper and lower recesses of the clamping body, the tilting of the presser triggers the pressing force. By reliably moving the child shaft from the upper recess to the lower recess, it becomes possible to more reliably release the locked state of the sliding door. If the forced retraction means is constituted by a spring that urges the shaft of the presser downward, the structure can be particularly simple.

Furthermore, if a prismatic pipe-shaped housing is fixed to the sliding door and a clamping body or the like is accommodated and supported within the housing, the intermediate stop device can be made into a unit. Therefore, the sliding door can be easily assembled, and the assembly work can be simplified.

[Brief explanation of the drawing]

1 to 6 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. 6 to 6 are explanatory diagrams 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...Top end 3...Intermediate stop device
4... Presser 5... Clamping body 5a...
Lower end portion 5b... Upper end portion 5C... Opposing surface 5d
...Upper recess 6...Pusher raising means 8...Forced retraction means 41...Shaft 42a...Upper end 43a...Friction surface 81...Spring 5e...Lower recess 7... - Pusher operating means 9...Housing 42...Presser body 43...Friction member 72...Manual operation section 82...Cam surface

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 includes a pusher, a clamping body, a pusher erecting means, a pusher operating means, and a forced evacuation means, and the pusher has a friction surface of a constant width at its upper end that comes into contact with the lower surface of the rail. The shaft provided on the lower end side is held by the clamping body so as to be able to move up and down and tilt from side to side, and the clamping body is arranged so as to be able to elastically clamp the shaft of the presser from the left and right sides. It has an upper concave part and a lower concave part at two different positions vertically, and each concave part holds the shaft of the presser stably in a moderate manner, and the presser raising means has an upper recess and a lower recess at two different positions. The pusher operating means is for forcibly moving the shaft of the pusher from the lower recess to the upper recess, and includes a manual operation section. The forced retraction means forcibly moves the shaft of the presser from the upper recess to the lower recess against the elastic clamping force of the clamping body triggered by the downward displacement of the shaft due to the tilting of the presser. The shaft of the pusher is pushed up from the lower recess to the upper recess by a temporary operating force applied to the manual operation part, and the friction surface of the pusher is brought into close contact with the lower surface of the rail. An intermediate stop device for a sliding door, characterized in that it is configured to 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. A claim characterized in that the holding body has an integrated lower end portion, the upper end side is elastically deformed from side to side, and an upper recessed portion and a lower recessed portion are respectively formed on opposing surfaces of the upper end side. An intermediate stop device for a sliding door according to item 1. 4. The forced retraction means forcibly moves the shaft of the presser from the upper recess to the lower recess against the elastic clamping force of the clamping body triggered by the downward displacement of the shaft due to the tilting of the presser. a spring; and a cam surface that forcibly moves the shaft of the presser from the upper recess to the lower recess by using the elastic clamping force of the clamping body triggered by the downward displacement of the shaft due to the tilting of the presser. 2. The intermediate stop device for a sliding door according to claim 1, further comprising: an intermediate stop device for a sliding door. 5. The forced retraction means forcibly moves the shaft of the presser from the upper recess to the lower recess against the elastic clamping force of the clamping 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, characterized in that it is constituted by a spring. 6. Claims 1, 3, and 4, characterized in that a prismatic pipe-shaped housing is fixed to the sliding door, and a clamping body, a pusher raising means, a pusher operating means, and a forced evacuation means are accommodated in the housing. Or the intermediate stop device for sliding doors as described in 5.