JPH1122304A - Supporting structure of double sliding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To support sliding doors under a stable state by extremely simple structure, to open and close the sliding doors easily even by light operating force and to conduct the open-close operation of the sliding doors smoothly. SOLUTION: The upper sections of the extending sections S1, S2 of support shafts penetrated through each pulley 6a, 6b and 8a, 8b, 10a, 10b are guided and supported slidably by upper hold-down guides 2bS, 2aS. Accordingly, the supporting structure of the double sliding doors is constituted in simple structure, in which exclusive pulleys for controlling the tilting of the sliding doors 3, 4a, 4b are removed, and the sliding doors are supported under a stable state, and can be opened and closed easily by light operating force, and the open-close operation of the sliding doors can be conducted smoothly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a sliding door support structure.

[0002]

2. Description of the Related Art Conventionally, as a sliding door used as a door for opening and closing an opening and closing door, one having a structure of two or three doors is generally used.

In such a sliding door, a pulley is rotatably supported on a stay mounted offset from the upper rear surface to the inside, and the pulley is rotatably guided by a guide installed above the opening and closing opening. Supported.

Since the sliding door thus supported in the offset state exerts a moment in which the lower end tilts inward due to the offset support, a sliding door supporting structure for restricting the tilting is provided, for example, by the vertical opening and closing of the opening and closing opening. A guide is arranged on the upper and lower stays of the sliding door so as to be guided and supported by the guide, and a single pulley is pivotally supported to restrict the inward tilting of the lower end of the sliding door, A pulley is rotatably supported on the upper stay of the slide door, and one pulley is rotatably guided and supported on a front guide rail provided side by side, and the other pulley is disposed outside the one pulley. The upper surface of the lever is supported so that it can be rolled on the lower surface of the guide rail to reduce the moment when the lower end of the sliding door tilts inward. To have.

[0005]

However, in such a support structure, in the former case, since the pulley which is offset and supported above the slide door is constituted by a single pulley, the moment acting on the lower end of the slide door is provided. Has the problem that the running resistance of the sliding door increases due to excessive
In the latter case, a plurality of pulleys are pivotally supported on the upper part of the slide door, and the pulleys arranged inside and outside of the slide door have a contact portion with a supported rail up and down so that the rolling direction is reversed. However, when these pulleys are supported coaxially, the relative rotation speed increases and causes heat generation. When the pulleys are individually supported by a plurality of shafts, the parallelism of each shaft and the pulley When an error occurs in the squareness, this causes a resistance, and the opening and closing movement of the slide door becomes heavy, and there is a risk that the pulley may come off the rail when an extreme opening and closing operation is performed.

The present invention has been made to solve the above problems, and has a very simple structure in which a sliding door is supported in a stable state, and can be easily opened and closed even with a light operating force. An object of the present invention is to provide a support structure of a sliding door that can smoothly open and close the sliding door.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a support structure for a sliding door which is slidably supported by guides arranged in parallel above an opening and closing opening. A pulley rotatably supported by a stay mounted offset to the inside and a support shaft having one end fixed to the stay and having an extending portion penetrating the pulley, the guide includes a pulley. A first rail for supporting and a second rail for abutting on the upper portion of the extension portion and slidably guiding the extension portion. It is characterized by regulating inclination. According to this feature, the upper portion of the extension of the support shaft that penetrates the pulley is slidably guided and supported by the second rail, so that there is no simple pulley for restricting the tilt of the slide door. , The slide door is supported in a stable state, can be easily opened and closed even with a light operating force, and the opening and closing operation of the slide door can be performed smoothly.

In the support structure for a sliding door according to the present invention, it is preferable that the extending portion of the support shaft is constituted by a round shaft. Since the extended portion of the support shaft is formed of a round shaft without using a pulley, the upper portion of the extended portion is slidably guided by the second rail, so that the pulley is supported on the support shaft. Even if there is an error in the parallelism of each shaft or the perpendicularity of the pulley to be supported, the sliding door can be smoothly opened and closed without running resistance or vertical movement when opening and closing the slide door.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments and the drawings. An embodiment of the sliding door support structure of the present invention will be described. FIG. 1 is a side view showing a partial cross section of the sliding door, and FIG. 2 is a perspective view of the sliding door provided with an interlocking mechanism.
FIG. 2 is a partial perspective view of a pulley support portion showing an embodiment of a sliding door support structure of the present invention.

As shown in FIGS. 1 to 3, reference numeral 1 denotes an opening and closing port of a storage such as a cabinet.
A guide 2 is horizontally mounted on the upper surface of the upper plate 1a so as to cross the opening and closing opening. The guide 2 is composed of a first guide 2a formed at a low position in front of the upper surface of the top plate 1a, and a first guide 2a. A second guide 2b formed at a rear high position is arranged side by side.

The first guide 2a is composed of a low guide rail 2aR as a first rail and an upper holding guide 2aS as a second rail, and the second guide 2b is a high guide rail 2bR as a first rail. And an upper holding guide 2bS as a second rail.

The center door 3 has first and second side doors 4 respectively.
a, the center door 3 is disposed at the center of the opening 1 when the opening 1 is closed, and first and second side doors 4a are provided on both sides of the center door 3. , 4b are slidably arranged. In this case, the weight of the center door 3 is larger than the weight of each of the first and second side doors.

A pair of stays 5a and 5b are mounted on the rear surface of the center door 3 on both upper sides thereof so as to be offset toward the upper surface of the top plate 1a of the opening / closing opening 1. Pulleys are respectively attached to the tips of the stays 5a and 5b. 6a and 6b are rotatably supported by the shaft.

A pair of stays 7a, 7b are mounted on both sides of the upper surface of the first side door 4a so as to be offset toward the upper side of the top plate 1a of the opening / closing opening 1, and each of the stays 7a, 7b.
Pulleys 8a and 8b (only 8b is omitted in the figure) are rotatably supported at the tips of.

On the back surface of the second side door 4b, a pair of stays 9a and 9b are provided on the upper side on both sides, respectively.
Each of the stays 9 is mounted offset to the upper surface.
Pulleys 10a and 10b are rotatably supported at the tips of a and 9b, respectively.

Each stay 5a, 5b and 7a, 7b, 9
The pulleys 6a, 6b and 8a, 8b, 10a, 10b that are pivotally supported at the tips of the a, 9b are pivotally supported by support shafts fixed to the stays, and the pulleys 6a, 6b, and 8
a, 8b, 10a, and 10a, extension parts S1 and S2
Are slightly extended outside the respective pulleys. Each stay 5a, 5b is connected to each stay 7a, 7b, 9
Since they are arranged out of phase with respect to a and 9b, mutual interference with the movement of the sliding door is avoided (see FIG. 1).

On the other hand, a pair of guides 11a and 11b each having a U-shaped cross section are horizontally arranged on the lower surface of the bottom plate 1b of the opening / closing opening 1 with the opening thereof facing downward.

On the back surface of the center door 3, a pair of L
Short stays 12a and 12b are provided to project toward the lower surface of the bottom plate 1b of the opening / closing opening 1 and wheels W1 are rotatably supported at the ends of the stays 12a and 12b, respectively.

A pair of L-shaped stays 13a and 13b are provided on both sides of the lower surface of the first side door 4a toward the lower surface of the bottom plate 1b.
Wheels W2 are rotatably supported at the tips of a and 13b.

A pair of L-shaped long stays 14a and 14b are provided on the lower surface of the second side door 4b on both sides thereof toward the lower surface of the bottom plate 1b.
Wheels W2 are rotatably supported at the tips of b.

Therefore, by adopting the sliding door support structure of the present invention for the center door 3, the center door 3 is provided.
Each of the pulleys 6a, which are rotatably supported on the lower guide rails 2aR and supported by the tips of the upper stays 5a and 5b,
6b, a support shaft formed with a circular cross section is penetrated, and the upper end of the extension S1 is slidably brought into contact with the upper holding guide 2aS to prevent the lower end of the center door 3 from tilting inward. doing.

Also, stays 12a, 1
2b, each wheel W1, W1 supported at the tip is a bottom plate 1
b Inserted into a guide 11a disposed outside the lower surface, and regulates the lateral swing of the lower end of the center door 3 when an unexpected external force acts on the center door 3.

Furthermore, by adopting the sliding door support structure of the present invention also for the first and second side doors 4a and 4b, the upper stays 7a and 7b for the first and second side doors 4a and 4b can be used. 7b, 9a, 9b, each pulley 8a, which is supported by the tip of the 9b and is rotatably supported on the high guide rail 2bR,
8b, 10a, and 10b, through which a support shaft formed with a circular cross section is penetrated, and the upper portion of the extension S2 is formed as an upper holding guide 2b
The lower end of the first and second side doors 4a and 4b is prevented from tilting inward by slidably contacting the S.

Further, the wheels W2, W2, which are pivotally supported at the tips of the stays 13a, 13b, 14a, 14b below the first and second side doors 4a, 4b, are provided inside guides 11b disposed inside the lower surface of the bottom plate 1b. And the first and second
When an unexpected external force acts on the side doors 4a, 4b, the lateral deflection of the lower ends of the first and second side doors 4a, 4b is restricted.

Therefore, each pulley 6a, 6b and 8a,
8b, 10a, 10b, extending portions S1, S of the support shaft penetrating
2 is slidably guided and supported by upper holding guides 2bS and 2aS, so that it has a simple structure without a dedicated pulley conventionally provided to restrict the tilting of the sliding doors 3, 4a and 4b. In addition to the configuration, the slide door is supported in a stable state and can be easily opened and closed even with a light operating force, so that the slide door can be smoothly opened and closed.

Further, since the extending portions S1 and S2 of the supporting shaft are constituted by round shafts without using pulleys, the upper portions of the extending portions are slidably guided by the upper holding guides 2bS and 2aS, so that the supporting shaft is supported. Even if there is an error in the parallelism of each shaft or the perpendicularity of the pulley to be supported, such as when a pulley is supported on a shaft, the sliding door opens and closes smoothly without running resistance or vertical movement when opening and closing the slide door. You can run.

As described above, the center door 3 and the center door 3
The first and second side doors 4a and 4b arranged on the front side of
The first and second guides 2a and 2b above the opening 1 and the guides 11a and 11b below the opening 1 are slidably supported.

Next, the interlocking mechanism will be described. As shown in FIGS. 1 and 2, the interlocking mechanism comprises a pair of pulleys 15 a rotatably spaced and supported on the horizontal bottom surfaces of the stays 5 a, 5 b projecting from the upper sides on the rear surface of the center door 3. , 1
5b, upper and lower 2 disposed on both outer sides of the first and second side doors 4a and 4b and rotatably supported on the upper surface of the top plate 1a.
A pair of fixed pulley groups 16a, 16b, 17a, 17b, and two upper and lower fixed pulley groups 18a, 18b, which are horizontally disposed behind the Amasaka 1a in correspondence with the two sets of fixed pulleys.
First and second locking portions for fixing the ends of the ropes on the upper surfaces of upper stays 7a and 9b provided on both outer sides of the first and second side doors 4a and 4b. 20a,
20b, one end is attached to one of the first locking portions 20a, and the pulley 15b of the other of the center doors 3 (on the side of the second side door 4b) is wound around the pulley groups 16a, 18a, 19b, and 17b and turned back. A first rope 21 having the other end attached to the second engagement portion 20b and stretched in a loop shape, and pulley groups 17a, 19a having one end attached to the other second engagement portion 20b,
The pulley 15a of one of the center doors 3 (the first side door 4a side) is wound around the center door 3 via 18b and 16b and turned back, and the other end is attached to the first locking portion 20a and the second is stretched in a loop. And a rope 22.

Next, the operation of the interlocking mechanism configured as described above will be described with reference to FIGS. First, in a state where the opening / closing opening 1 is closed, when one side door (here, the first side door 4a) is moved toward the center door 3, FIG.
As shown in FIG.
The rope 21 is pulled, the pulley 15b of the center door 3 is turned back, and the second side door 4b is moved toward the center door 3 via the second locking portion 20b to which the other end is attached.

Here, the second side door 4b attempts to move the center door 3 in the same direction by half the movement of the first side door 4a. The movement of the door 4b is started, and the movement of the second side door 4b pulls the second rope 22 to pulley 1 of the center door 3.
5a is folded back and the other end is attached to the first locking portion 20a.
The first side door 4b is moved to the center door 3 side via.

Thus, the pulleys 15 on both sides of the center door 3
The first and second side doors 4 a, 4 b are balanced with respect to the center door 3 by the traction force of the ropes acting on the center door 3.
Can be simultaneously moved symmetrically. As a matter of course, the same symmetrical interlocking movement can be obtained when the second side door 4b is opened and closed.

As described above, the first and second ropes 21 and 22
As a result, the first side door 4a or the second side door 4b moves twice as much as the center door 3, and the first side door 4a and the second side door 4b move symmetrically with respect to the center door 3. Therefore, the operator moves the first side door 4a and the second side door 4b simultaneously and in a wide range by a single operation in a state where the operator is located at a fixed position in front of the first side door 4a or the second side door 4b. be able to.

Further, even when the operator is located on one side of the opening / closing opening 1, the first or second sliding door 4a, 4
By a single operation of opening and closing b, the first or second sliding doors 4a and 4b move symmetrically with respect to the center door 3, so that both sides of the opening and closing opening 1 can be opened and closed simultaneously.

Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and even if there are changes and additions without departing from the gist of the present invention. Included in the invention. For example, the extending portions S1 and S2 of the support shafts penetrating the pulleys 6a, 6b and 8a, 8b, 10a, and 10b are configured to be horizontally supported by the stay, but the tip is inclined downward. Is also possible.

[0035]

The present invention has the following effects.

(A) According to the first aspect of the present invention, the upper portion of the extending portion of the support shaft penetrating the pulley is slidably guided and supported by the second rail, so that the tilting of the slide door is restricted. The sliding door is stably supported in a simple structure without a dedicated pulley, and can be easily opened and closed even with a small operating force, so that the sliding door can be smoothly opened and closed.

(B) According to the second aspect of the present invention, since the extending portion of the support shaft is constituted by a round shaft without using a pulley,
Since the upper portion of the extension is slidably guided by the second rail, even if an error occurs in the parallelism of each shaft or the perpendicularity of the pulley to be supported, as in the case where the pulley is supported on the support shaft, the slide is performed. The door can be opened and closed smoothly without running resistance or vertical movement when the door is opened and closed.

[0038]

[Brief description of the drawings]

FIG. 1 is a side view having a partial cross section of a sliding door as a first embodiment of the present invention.

FIG. 2 is a perspective view of a sliding door provided with an interlocking mechanism according to the first embodiment of the present invention.

FIG. 3 is a partial perspective view of a pulley supporting portion showing one embodiment of a sliding door support structure of the present invention.

[Explanation of symbols]

 Reference Signs List 1 opening / closing opening 1a top plate 1b bottom plate 2 guide 2a first guide 2b second guide 2aR low guide rail 2bR high guide rail 2aS upper holding guide 2bS upper holding guide 3 center door 4a first side door 4b second side door 5a, 5b Stay 6a, 6b Pulley 7a, 7b Stay 8a, 8b Pulley 9a, 9b Stay 10a, 10b Pulley 11a, 11b Guide 12a, 12b Stay 13a, 13b Stay 14a, 14b Stay 15a, 15b Pulley 16a, 16b Fixed pulley 17a, 17b Pulleys 18a, 18b Fixed pulleys 19a, 19b Fixed pulleys 20a First locking portion 20b Second locking portion 21 First rope 22 Second rope S1, S2 Extension portions W1, W1 Wheel

Claims (2)

[Claims] 1. A sliding door support structure which is slidably supported by guides arranged side by side above an opening / closing opening, the stay being offset inward from above the sliding door. A pulley rotatably supported on the stay, and a support shaft having one end fixed to the stay and having an extending portion penetrating the pulley, the guide includes a first rail supporting the pulley, A second rail that abuts on an upper portion of the extension to guide the slide door in a slidable manner, wherein the upper portion of the extension regulates the tilting of the slide door by contact with the second rail. Support structure for sliding door. 2. The sliding door support structure according to claim 1, wherein the extending portion of the supporting shaft is formed of a round shaft.