JP2000282737A - Locking mechanism of sliding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking mechanism capable of controlling the opening of a sliding door so as to directly obstruct the movement of a link mechanism. SOLUTION: The lock mechanism of a sliding door is so constituted that a middle sliding door 24 is placed between a pair of outside sliding door 22 and 23 and that the sliding doors are provided so as to make it possible to interlock in the direction of opening and closing. The outside sliding door 22 includes a key cylinder 31, at the same time, a stop bar 65 is loaded to the key cylinder 31, and the stop bar 65 is so constituted that a control shaft section 73 is provided to the front end thereof. The control shaft section is so provided that it can go in and out to a position obstructing a moving locus of a roller 55 provided to a joint section between a pair of link bars 23 and 26 constituting a link mechanism 60.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking mechanism for a sliding door, and more particularly, it can inhibit relative movement of a plurality of sliding doors and can directly act on a link mechanism for linking the sliding doors. The present invention relates to a locking mechanism for a sliding door.

[0002]

2. Description of the Related Art Conventionally, in various cabinets such as storages, when an opening is formed as a sliding door, three or more cabinets are formed in order to make it possible to form an opening width larger than the left and right width of one sliding door. There is known a configuration in which sliding doors are employed and these are linked via a link mechanism. As a locking mechanism in this type of sliding door interlocking type cabinet, similarly to a door opening / closing type, a shaft member extending in a vertical direction of a key cylinder provided in any one sliding door, and provided at an end of the shaft member. Generally, a configuration is provided in which a claw piece is provided, and the claw piece is engaged and disengaged with a top plate or the like constituting the cabinet body side.

[0003]

However, in such a locking mechanism for a sliding door, the shaft member extending in the vertical direction of the key cylinder must be long, and the entire locking mechanism becomes large. There is an inconvenience. Moreover, since the shaft member is long and the position of the claw that exerts the locking action is located far away from the position of the normally formed puller, if the sliding door is slid with a strong force, In addition, there is an inconvenience that the shaft member is deformed by bending or the like, or the nail piece is damaged.

[0004]

SUMMARY OF THE INVENTION The present invention has been devised in view of such inconvenience, and an object of the present invention is to restrict the opening of a sliding door by directly blocking the movement of a link mechanism, It is an object of the present invention to provide a locking mechanism for a sliding door which can effectively avoid the damage factor.

[0005]

In order to achieve the above object, the present invention provides an intermediate sliding door between a pair of outer sliding doors, and enables each of these sliding doors to be linked in the opening and closing direction via a link mechanism. In the sliding door locking mechanism of the provided cabinet, an operation unit provided on any one of the sliding doors, and can be moved to a position extending from the operation unit and directly prohibiting relative movement between the one outer sliding door and the intermediate sliding door. It is configured to have a stop bar. With such a configuration, the relative movement of the interlocking sliding door is directly prohibited by the stop bar, so that a highly reliable locking mechanism can be provided. In other words, while the movement restriction of the link mechanism indirectly restricts the movement of the sliding door, according to the present invention, the relative movement between the sliding doors is directly prohibited by the stop bar.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION
It is preferable to additionally adopt a configuration in which the link mechanism is rotatably provided at a position that extends to a part of the link mechanism and blocks a movement path of the link mechanism. With such a configuration, the stop bar directly inhibits the relative movement of the sliding door, and at the same time, the movement of the link mechanism can be restricted. Thus, even if the sliding door is forcibly opened, a sufficient strength can be imparted to the sliding door. In addition, the operation unit and the link mechanism can be brought close to each other, and the overall length of the locking mechanism can be reduced by setting the length of the stop bar to be short.

The link mechanism receives a pair of link bars connected to each other so as to be rotatable relative to each other and arranged at symmetrical positions, and a roller provided on the intermediate sliding door and supported by a connecting portion of the link bar. And a guide portion provided on each outer sliding door and supporting an end of the link bar.
It is preferable to adopt a configuration in which the stop bar is provided so that the tip end side thereof can protrude and retract from the inside of the guide, and blocks the movement trajectory of the roller. With this configuration,
Since the stop bar is located at approximately the middle position of the entire length of the link bar, even if an unreasonable external force is applied to open the sliding door in the locked state, a reaction force that can counter this force is most effectively generated. In this way, damage factors can be avoided.

Further, the stop bar has a shaft portion extending substantially parallel to the surface of the sliding door, and a regulating shaft portion provided at the tip of the shaft portion and oriented in a substantially vertical posture in an unlocked state. It is preferable to adopt a configuration in which the shaft is rotated through a key operation to rotate the regulating shaft in a substantially horizontal posture, thereby blocking the movement trajectory of the link mechanism. With this configuration, the locking mechanism can be configured using a single shaft member without complicating the structure.In addition, even when supplied to the market as a knock-down type cabinet, assembly by the user can be performed without burden. Becomes In addition, it is preferable to provide a buffer member on the regulating shaft, so that the impact when the link mechanism comes into contact with the regulating shaft can be reduced, and noise caused by the contact can be prevented.

Note that terms indicating directions or positions in this specification, that is, "left and right", "front and rear", "up and down"
Unless otherwise indicated, etc. are used with reference to FIG. 2 when the cabinet is viewed from the front.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic perspective view of a cabinet according to this embodiment, and FIGS. 2 to 4 are front views of cabinets in which sliding door positions are different. In these figures, a cabinet 10 includes a cabinet body 12 having an opening 11 on the front side, a sliding door 14 provided to be able to open and close the opening 11, and a shelf plate 13 arranged in the cabinet body 12 (see FIG. 3).

The cabinet body 12 includes a base 15 having a rectangular shape that is horizontally long in a plan view, a pair of side plates 16 disposed on both left and right sides of the base 15, and the base 1.
5 and a back plate 17 (see FIG. 3) arranged on the rear end side of the side plate 16 and a top plate 19 arranged on the upper end. Here, on the upper surface on the front end side of the base 15,
Three front and rear rails 20 for sliding the sliding door 14 are formed along the left-right direction. Correspondingly, a rail (not shown) is formed on the lower surface on the front end side of the top plate 19.

The sliding door 14 includes an outer sliding door 22 located on the right side and an outer sliding door 23 located on the left side when the opening 11 is closed, and a single intermediate sliding door located between the outer sliding doors 22 and 23. 24. As shown in FIG. 1, these sliding doors 22 to 24 are sequentially arranged stepwise in the front-rear direction, so that they can slide in the left-right direction without buffering each other along the grooves of the three rails 20 described above. It has become. In addition, outside sliding door 2
2, 23 and the intermediate sliding door 24 are connected to each other through a pair of first and second link bars 25, 26, so that when one of the outer sliding doors is slid, the intermediate sliding door is interlocked. The sliding door 24 is slidable.

On the upper side of the outer sliding doors 22, 23, a puller 2 is provided.
9 and 30 are provided respectively. A key cylinder 31 constituting an operation unit is provided at a lower position of one of the pullers 29, as shown in a main part schematic rear view of FIG. Bracket 32 supporting the end of first link bar 25
Are fixed to the back side of the outer sliding door 22. The bracket 32 includes a rising piece 32A that is substantially perpendicular to the back surface of the outer sliding door 22 and is directed toward the rear side (the front side in FIG. 5) of the outer sliding door 22; And a bearing forming piece 32B positioned substantially in parallel. The large diameter hole 3 is formed in the bearing forming piece 32B.
4 and a slit hole 35 extending downward from the large-diameter hole 34. A first bearing 36 is provided at the end of the first link bar 25. The link bar 25 can be rotated in a substantially vertical plane by receiving the support shaft 37. At this time, the support shaft 37 has a flange 37 received from the large-diameter hole 34 and positioned so as not to fall into the slit hole 35.
A is formed.

The other outer sliding door 23 located on the opposite side to the outer sliding door 22 has the first
A second bearing portion 39 is formed at substantially the same height position as the bearing portion 36 of FIG. The second bearing portion 39 also includes a large-diameter hole 40 and a slit hole 41 connected to the large-diameter hole 40, so that the end of the second link bar 26 can be supported. That is, the second link bar 26
A support shaft 42 having a flange 42A is provided at the end of the first link bar 25, like the first link bar 25. The support shaft 42 extends into the slit hole 41, and the flange 42A is inserted into the slit hole 41. By positioning, the second link bar 2
6 is receivably provided in the bearing portion 39 of the outer sliding door 23 without falling off.

As shown in the schematic rear view of the main part of FIG. 6, the intermediate sliding door 24 has an outer sliding door 22 side (left side in FIG. 6).
A guide 43 extending in the up-down direction is fixed at the end position. The guide 43 has a long strip-shaped fixing surface 45 extending in the vertical direction, a pair of side surfaces 46, 46 provided on both left and right sides of the fixing surface 45, and a pair of the side surfaces 46, 46. It is configured to include folded surfaces 47, 47 provided to face each other, and a slit 48 formed between the folded surfaces 47, whereby the guide 43 is provided in a shape in which both upper and lower ends are open. A notch 50 is formed in the fixing surface 45, and the notch 50 is
When the sliding doors 22 to 24 are in the closed posture, the intermediate sliding door 24
Is provided so as to open to a notch hole 51 formed penetrating front and rear.

The first and second link bars 25, 26
Are constituted by plate-like members which are provided at substantially the same length as each other and are symmetrically arranged. As shown in the schematic perspective views of FIGS. 7 and 8 viewed from the inside, the link bars 25 and 26 are provided with the support shafts 37 and 42 described above.
Are connected to each other via a rotation center shaft 56 of a roller 55 in a state in which the ends on the side where is not provided are overlapped. The roller 55 is provided so as to be located in the above-described guide 43, and is provided so as to be movable in the vertical direction by rolling with an outer peripheral surface thereof being in contact with the inner surfaces of the side surfaces 46, 46 of the guide 43. Accordingly, as the position of the roller 55 rises, the link bars 25, 26 gradually rotate in the direction of approaching, whereby the sliding operation of one of the outer sliding doors 22 or 23 causes the intermediate sliding door 24 to slide. It can be linked to the direction. Here, a link mechanism 60 for interlocking the sliding doors 22 to 24 with the first and second link bars 25 and 26, the first and second bearing portions 36 and 39, the guide 43, the roller 55, and the like is provided. Is formed.

The key cylinder 31 constitutes a part of a locking mechanism 62 for the sliding door.
Is a key cylinder 3 as shown in FIG. 9 and FIG.
1, a driving piece 64 that can be moved in the vertical direction by a key operation (not shown), is provided rotatably by engaging with the driving piece 64, and a part of the link mechanism 60, that is, a roller 55 And a stop bar 65 that extends to the upper position of the roller 55 and is configured to block the movement trajectory of the roller 55. The driving piece 64 is formed of a plate-like member having a crank shape as viewed from the side end face.
6 are formed.

The stop bar 65 is provided on a shaft 70 extending substantially parallel to the surface of the outer sliding door 22, and on a base end of the shaft 70 located on the left end side in FIG. An engagement shaft portion 72 that is bent in a direction perpendicular to the axial direction and is provided so as to be engageable in the engagement hole 66;
A regulating shaft portion 73 provided at the tip of a shaft portion 70 opposite to the engaging shaft portion 72 and blocking the movement locus of the roller 55.
It is composed of The front end side region of the shaft portion 70 is provided so as to be located in the reinforcing surface 75 folded back on the back surface side of the outer sliding door 22, and the posture facing the substantially vertical direction inside the reinforcing surface 75, It is provided rotatably between a position where it becomes a substantially horizontal posture through a notch hole 76 formed in the reinforcing surface 75. Specifically, as shown in FIG. 9, when the driving piece 64 mounted on the key cylinder 31 is at the lowered position, the regulating shaft 73 faces vertically downward, while the driving piece 64 rises. The tip of the engagement shaft 72 is displaced upward, so that the regulating shaft 73 is in a substantially horizontal posture. Here, the notched hole 76 of the reinforcing surface 75 is
The guide shaft 43 is formed in the notch hole 51 and the notch hole 50 of the guide 43.
Is rotated through the notched holes 76, 51, 50 to a position where the outer sliding door 22 and the intermediate sliding door 24 are moved to a substantially horizontal position, and the regulating shaft 73 is
5, so that the first and second trajectories are blocked.
Thus, the locked state of the sliding door is established by restricting the rotation of the link bars 25, 26. The regulating shaft 73
Is provided with a buffer member 73A such as resin or rubber in order to prevent impact or noise at the time of contact with the roller 55.

Next, the operation of this embodiment will be described.

1 and 2 when the outer sliding doors 22, 23 and the intermediate sliding door 24 completely close the opening 11.
As shown in (1), the first and second link bars 25 and 26 constituting the link mechanism 60 are maintained at a gentle inclination in the left-right direction with the position of the rotation center axis 56 of the roller 55 being the maximum height position. It is. Here, when the right outer sliding door 25 is slid to the left in a state where the above-described locking mechanism 62 is not operated, that is, in an unlocked state, the roller 55 rises along the guide 43 as shown in FIG. While moving to the left, the intermediate sliding door 24 is slid in conjunction with the same direction. Further, when the outer sliding door 22 is moved to the left sliding limit, the opening 11 can be opened to a degree close to the sum of the left and right widths of the outer sliding door 22 and the intermediate sliding door 24 (see FIG. 4). The rising length of each link bar 25, 26 here is the length of the link bar 2
For example, as shown in FIG. 11, in a mode in which the cabinets 10 are stacked and used on a top plate 81 of a separate storage 80 as shown in FIG. 11, the link mechanism 60 is provided below. At the same time, if the pull bars 29 and 30 are also set at positions close to this, even if the windows W are provided in the respective sliding doors 22 to 24, they are not seen from the outside even when the link bars 25 and 26 rise up to the maximum. It is possible to keep.

The outer sliding doors 22, 23 and the intermediate sliding door 24
When restricting the opening of the door, that is, when the locking mechanism 62 is operated, the sliding doors 22 to 23 are set to the closed positions shown in FIG. 2, and a key (not shown) is inserted into the key cylinder 31 and rotated. It should be done. As a result, the driving piece 64 mounted on the key cylinder 31 rises from the lowered position, and at this time, the regulating shaft 73 of the stop bar 65 moves from the vertical posture shown in FIG. 9 to the horizontal posture shown in FIG. It rotates to the attitude and is located above the roller 55. Accordingly, the outer sliding door 22 or 23 slides by a slight distance between the regulating shaft 73 and the roller 55, but after the roller 55 comes into contact with the regulating shaft 73, the movement of the outer sliding door 22 or 23 is restricted. The Rukoto. In the present embodiment, the state in which the tip of the regulating shaft 73 is located below the axis of the shaft 70 is the unlocked state, but the tip of the regulating shaft 73 is higher than the axis of the shaft 70. If the position is set to the unlocked state, the regulating shaft 73
The aforementioned separation distance that may occur between the roller and the roller 55 can be eliminated, and the outer sliding door 22 or 23 does not slide even slightly.

In the above-described embodiment, the regulating shaft 73 is configured to block the movement path of the roller 55. However, the present invention is not limited to this, and the first and second link bars 25, It may be configured to block any of the movement trajectories 26.

In the above embodiment, the first and second
The ends of the link bars 25, 26 are connected by supporting the support shafts 37, 42 on the first and second bearings 36, 39, but the present invention is not limited to this. is not. For example, the first and second link bars 2
While providing holes at the ends of the sliding doors 5 and 26, an appropriate bracket having holes corresponding to the holes is provided on the inner surface side of the sliding door, and screw rivets are inserted through these holes to form an end connecting portion. Can also. Here, the screw rivet is provided with a receiving member that can be expanded by inserting a pin, and the receiving member can be expanded and deformed by inserting the pin after the receiving member is inserted into the hole so that connection is possible. It is a part to be done. Therefore, the connection state can be easily released by removing the pin, and assembling and disassembly become easier as compared with the conventional rivet.

[0025]

As described above, according to the present invention,
Since the stop bar is movably provided at a position extending from the operation unit and directly prohibiting the relative movement of the sliding door, the linked sliding door is directly restricted by the stop bar, thereby providing a highly reliable lock. It can be a mechanism.

Further, in a configuration in which the stop bar extends to a part of the link mechanism and is rotatably provided at a position where the stop bar blocks the movement trajectory of the link mechanism, the stop bar directly controls the relative movement of the sliding door. At the same time, it is possible to restrict the movement of the link mechanism, further enhance the reliability of the locked state, and provide sufficient strength to oppose this even if the sliding door is forcibly opened. it can. In addition, the operation unit and the link mechanism can be brought close to each other, and the length of the stop bar can be set to be short, so that the overall size of the locking mechanism can be reduced.

A roller for connecting a pair of link bars arranged symmetrically to each other and a guide for receiving the roller are provided, and the distal end of the stop bar is provided so as to be able to protrude and retract with respect to the guide. Since the movement is restricted, the stop bar is located at approximately the middle position of the entire length of the link bar, and a reaction force that can resist even an unreasonable external force that attempts to open the sliding door in the locked state. Can be effectively generated, and as a result,
Damage to components and the like that constitute the locking mechanism can also be effectively avoided.

Further, the stop bar has a configuration in which the restricting shaft rotates in a substantially horizontal posture through a predetermined key operation to block the movement trajectory of the link mechanism, so that the locking mechanism is not complicated. Even if the knockdown cabinet is supplied to the market as a knockdown type cabinet, assembly by the user can be performed without burden. Further, according to the configuration in which the buffer member is provided on the regulating shaft portion, it is possible to reduce an impact when the link mechanism comes into contact with the regulating shaft portion, and also to prevent generation of noise due to the contact.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a cabinet according to an embodiment to which a sliding door opening / closing structure is applied.

FIG. 2 is a front view of the cabinet showing a state where the sliding door is completely closed.

FIG. 3 is a front view of the cabinet showing a state where a sliding door is partially opened.

FIG. 4 is a front view of the cabinet showing a state where the sliding door is completely opened.

FIG. 5 is a schematic front view of a main part of the link mechanism as viewed from the back side of the sliding door.

FIG. 6 is a schematic rear view of a main part of the intermediate sliding door.

FIG. 7 is a schematic perspective view of a main part showing a position where a stop bar blocks a movement path of a roller.

FIG. 8 is a schematic perspective view of a main part showing a position where a stop bar allows a roller to move.

FIG. 9 is a schematic perspective view of a main part when the locking mechanism is in a non-operation state.

FIG. 10 is a schematic perspective view of a main part when the locking mechanism is in an operating state.

FIG. 11 is a front view showing a specific example of use when the sliding door opening / closing mechanism according to the embodiment is applied to a cabinet having a window.

[Explanation of symbols]

 10 Cabinet 11 Opening 14 Sliding Door 22 Outer Sliding Door 23 Outer Sliding Door 24 Intermediate Sliding Door 25 First Link Bar 26 Second Link Bar 31 Key Cylinder 43 Guide 55 Roller 60 Link Mechanism 62 Locking Mechanism 65 Stop Bar 70 Shaft 73 Regulatory Shaft Part 73A buffer member

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masaaki Hattori 6-1, 1-1 Oimazato-Minami, Higashi-Nari-ku, Osaka-shi Inside Kokuyo Co., Ltd. No. 1 Inside KOKUYO Co., Ltd. (72) Inventor Kazumi Agata 1450-1 Odacho, Ueno City, Mie Prefecture Inside Toyokuni Kogyo Co., Ltd.

Claims (5)

[Claims] 1. A sliding door locking mechanism for a cabinet in which an intermediate sliding door is disposed between a pair of outer sliding doors and each of the sliding doors is provided so as to be interlockable in an opening and closing direction via a link mechanism. A locking mechanism for a sliding door, comprising: an operating unit provided; and a stop bar extending from the operating unit and movable to a position for directly prohibiting relative movement between the one outer sliding door and the intermediate sliding door. . 2. The locking mechanism for a sliding door according to claim 1, wherein the stop bar is provided at a position that extends to a part of the link mechanism and is rotatable at a position that blocks a movement path of the link mechanism. . 3. The link mechanism comprises a pair of link bars connected to each other so as to be relatively rotatable and arranged at symmetrical positions.
A guide that is provided in the intermediate sliding door and receives the roller supported by the connecting portion of the link bar and guides the roller vertically, and a bearing that is provided in each outer sliding door and supports an end of the link bar. The locking mechanism for a sliding door according to claim 1, wherein the stop bar is provided so that a distal end side thereof is provided so as to be able to protrude and retract from the inside of the guide, and blocks a movement locus of a roller. 4. The stop bar includes a shaft portion extending substantially parallel to a surface of a sliding door, and a regulating shaft portion provided at a tip of the shaft portion and directed to a substantially vertical posture in an unlocked state. 2. The movement trajectory of the link mechanism is interrupted by rotating the shaft in the circumferential direction by rotating the shaft in the circumferential direction through the key operation of (1).
Or the locking mechanism of the sliding door according to 3. 5. A locking mechanism for a sliding door according to claim 4, wherein a buffer member is provided on said regulating shaft portion.