JP3382877B2 - Sliding door locking mechanism - Google Patents

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 specifically, it can inhibit relative movement between a plurality of sliding doors and can directly act on a link mechanism for interlocking the sliding doors. A locking mechanism for a sliding door.

[0002]

2. Description of the Related Art Conventionally, in various cabinets such as a storage cabinet, when the opening is a sliding door type, it is possible to form an opening width larger than the left and right width of one sliding door. A configuration is known in which a sliding door is adopted and these are interlocked via a link mechanism. As a locking mechanism in this type of sliding door interlocking type cabinet, a shaft member extending in the up-down direction of a key cylinder provided in any one of the sliding doors and an end portion of this shaft member are provided as in the door opening / closing type. It is generally configured to include a claw piece and disengage the claw piece from a top plate or the like constituting the cabinet body side.

[0003]

However, in such a locking mechanism for the sliding door, the shaft member extending in the vertical direction of the key cylinder is inevitably 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 piece that exerts the locking action is at a position considerably distant from the position of the normally formed pulling hand, when sliding the sliding door with a strong force, However, there is an inconvenience that the shaft member is deformed such as bent, 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 thereof is to restrict the opening of a sliding door by directly blocking the movement of a link mechanism and to compose a component. Another object of the present invention is to provide a locking mechanism of a sliding door that can effectively avoid the damage factor of the above.

[0005]

In order to achieve the above-mentioned object, the present invention arranges an intermediate sliding door between a pair of outer sliding doors, and links each of these sliding doors in an opening / closing direction via a link mechanism. In the sliding door locking mechanism of the provided cabinet, it is possible to move to an operation portion provided on any one of the sliding doors and a position extending from this operation portion and directly prohibiting relative movement of the one outer sliding door and the intermediate sliding door. And a stop bar , the stop bar of the link mechanism
Turn it to a position that extends to a part and blocks the movement trajectory of the link mechanism.
Is rolling capable provided, adopts a configuration that. With such a configuration, the interlocking sliding door is directly prohibited from the relative movement by the stop bar, so that a highly reliable locking mechanism can be obtained. In other words, the movement restriction of the link mechanism indirectly restricts the movement of the sliding door, whereas according to the present invention, the relative movement between the sliding doors is directly prohibited by the stop bar. Also, the stop bar is pulled.
Directly prohibiting relative movement of the door, and at the same time, link mechanism
Because it will be possible to regulate movement against
It has a heavy locking action to further enhance the reliability of the locked state.
And it is enough for trying to open the sliding door forcibly
Opposing strength can be imparted. Moreover, the operation unit
And the link mechanism can be brought closer to each other,
By setting the stop bar length short, the entire locking mechanism
Can be achieved.

[0006]

Further, according to the present invention, there is a center between a pair of outer sliding doors.
Sliding doors are arranged and each of these sliding doors is linked.
Of the cabinet that can be linked in the opening and closing direction via the structure
In the sliding door locking mechanism, the operation provided on any one of the sliding doors.
The working part and the outer pulling part extending from the operating part.
Move to a position that directly prohibits relative movement between the door and the intermediate sliding door
The link mechanism includes a pair of link bars which are rotatably connected to each other and are arranged in symmetrical positions, and a stop bar which is provided on the intermediate sliding door and is supported by a connecting portion of the link bar. A guide that receives the roller and guides it in the vertical direction, and a bearing portion that is provided in each outer sliding door and that supports the end portion of the link bar are provided, and the stop bar has a tip end side in the guide. On the other hand, it is preferable to adopt a configuration in which the roller is provided so as to be able to project and retract, and the movement trajectory of the roller is blocked. With this structure, the stop bar regulates the intermediate position of the entire length of the link bar, so that even if an unreasonable external force is applied to open the sliding door in the locked state, the counter bar can counteract this. The force can be generated most effectively to avoid damaging factors.

Further, according to the present invention, there is an intermediate door between the pair of outer sliding doors.
Sliding doors are arranged and each of these sliding doors is linked.
Of the cabinet that can be linked in the opening and closing direction via the structure
In the sliding door locking mechanism, the operation provided on any one of the sliding doors.
The working part and the outer pulling part extending from the operating part.
Move to a position that directly prohibits relative movement between the door and the intermediate sliding door
A stop bar that is capable of moving, and the stop bar includes a shaft portion that extends substantially parallel to the surface of the sliding door, and a restricting shaft portion that is provided at the tip of the shaft portion and that is oriented in a substantially vertical posture in an unlocked state. It is preferable to adopt a configuration in which the regulating shaft portion is rotated in a substantially horizontal posture by rotating the shaft portion through a predetermined key operation to interrupt the movement trajectory of the link mechanism. With such a configuration, the locking mechanism can be configured using one shaft member without complicating, and even when it is supplied to the market as a knockdown type cabinet, the user can assemble it without burden. Becomes Further, it is preferable to provide a cushioning member on the regulation shaft portion, whereby the shock when the link mechanism comes into contact with the regulation shaft portion is mitigated, and the generation of noise accompanying the contact can be prevented.

In this specification, terms indicating directions or positions, that is, "left and right", "front and rear", "up and down"
Unless otherwise specified, the figures are used with reference to FIG. 2 which is a front view of the cabinet.

[0010]

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

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

The cabinet body 12 has a rectangular base 15 which is horizontally long in a plan view, a pair of side plates 16 and 16 arranged on both left and right sides of the base 15, and the base 1
5 and the back plate 17 (see FIG. 3) arranged on the rear end side of the side plate 16 and the 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, and correspondingly, a rail (not shown) is also formed on the lower surface of the top plate 19 on the front end side.

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, and a single intermediate sliding door located between the outer sliding doors 22 and 23 when the opening 11 is closed. And 24. As shown in FIG. 1, these sliding doors 22 to 24 are sequentially arranged in different steps in the front-rear direction so that they can slide in the left-right direction along the respective grooves of the three-row rail 20 described above without buffering each other. It has become. Also, the outside sliding door 2
2, 23 and the intermediate sliding door 24 are connected to each other via a pair of first and second link bars 25, 26, so that when one outer sliding door is slid, the intermediate sliding door 24 is interlocked with it. The sliding door 24 is slidable.

Pullers 2 are provided on the upper sides of the outer sliding doors 22 and 23.
9 and 30 are provided, respectively. At a lower position of one of the pull tabs 29, as shown in a schematic rear view of a main part of FIG. 5, a key cylinder 31 which constitutes an operation part is provided, and a lower part of the key cylinder 31 is provided. Bracket 32 that supports the end of the first link bar 25
Is fixed to the back side of the outer sliding door 22. The bracket 32 has a rising piece 32A that faces the rear side (front side in FIG. 5) of the outer sliding door 22 at a substantially right angle to the back surface of the outer sliding door 22, and the outer sliding door 22 is connected to the rising piece 32A. It is constituted by a bearing forming piece 32B positioned substantially in parallel. The bearing forming piece 32B has a large diameter hole 3
4 and a slit hole 35 connected to the large-diameter hole 34 and extending downward. The first bearing part 36 is provided at the end of the first link bar 25. The link shaft 25 can be rotated in a substantially vertical plane by receiving the supporting shaft 37. At this time, the support shaft 37 has a flange 37 that is received from the large diameter hole 34 and is positioned in the slit hole 35 so as not to fall off.
A is formed.

The other outer sliding door 23 located on the opposite side of the outer sliding door 22 has the first side on the back side thereof.
The second bearing portion 39 is formed at substantially the same height as the bearing portion 36 of FIG. The second bearing portion 39 is also composed of a large diameter hole 40 and a slit hole 41 continuous with the large diameter hole 40, whereby the end portion of the second link bar 26 can be supported. That is, the second link bar 26
Like the first link bar 25, a support shaft 42 having a flange 42A is provided at the end of the support shaft 42, and the support shaft 42 extends into the slit hole 41 so that the flange 42A extends into the slit hole 41. By being located, the second link bar 2
6 is provided on the bearing portion 39 of the outer sliding door 23 so as to be received without falling off.

The intermediate sliding door 24 has an outer sliding door 22 side (left side in FIG. 6), as shown in a schematic rear view of a main portion of FIG.
A guide 43 extending in the vertical direction is fixed at the end position of the. The guide 43 has a long piece-shaped fixed surface 45 extending in the vertical direction, a pair of side surfaces 46, 46 continuously provided on both left and right sides of the fixed surface 45, and the side surfaces 46, 46 continuously provided with each other. The guide 43 is provided with the folding surfaces 47, 47 provided so as to face each other, and the slit 48 formed between the folding surfaces 47, whereby the guide 43 is provided in a shape in which both upper and lower ends are open. A notch hole 50 is formed in the fixed surface 45, and the notch hole 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 into a notch hole 51 formed by penetrating in the front-rear direction.

The first and second link bars 25, 26
Are plate-shaped members that are provided to have substantially the same length and are symmetrically arranged. Each of the link bars 25 and 26 has the above-mentioned support shafts 37 and 42 as shown in the schematic perspective views of FIGS.
In the state in which the end portions on the side where is not provided are overlapped with each other, they are relatively rotatably connected via a rotation center shaft 56 of the roller 55. The roller 55 is provided so as to be positioned in the guide 43 described above, and its outer peripheral surface is brought into contact with the inner surfaces of the side surfaces 46, 46 of the guide 43 to roll so as to be movable in the vertical direction. Therefore, as the position of the roller 55 rises, the link bars 25 and 26 rotate in a direction in which they gradually approach each other, whereby the outer sliding door 22 or 23 is slid to slide the intermediate sliding door 24. It becomes possible to interlock with 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, and the roller 55 is provided. Has been formed.

The key cylinder 31 constitutes a part of a locking mechanism 62 for the sliding door, and the locking mechanism 62 is used.
Is the key cylinder 3 as shown in FIG. 9 and FIG.
A drive piece 64 attached to the first drive unit 1 and movable in the vertical direction by a key operation (not shown), and is provided rotatably by engaging with the drive piece 64 and a part of the link mechanism 60, that is, the roller 55. And a stop bar 65 that is configured to extend to the upper position of and to block the movement trajectory of the roller 55. The driving piece 64 is composed of a plate-shaped member having a crank shape in a side end face view, and an elliptical engagement hole 6 is formed in an upper region of the driving piece 64.
6 is formed.

The stop bar 65 is provided on a shaft portion 70 extending substantially parallel to the surface of the outer sliding door 22, and a base end side of the shaft portion 70 located on the left end side in FIG. An engagement shaft portion 72 which is bent in a direction orthogonal to the axial direction and is provided so as to be engageable in the engagement hole 66;
A restricting shaft portion 73 which is provided at the tip of the shaft portion 70 on the opposite side of the engaging shaft portion 72 and blocks the movement trajectory of the roller 55.
It is composed of and. The tip end side region of the shaft portion 70 is provided so as to be located inside the reinforcing surface 75 that is folded back to the back surface side of the outer sliding door 22, and the posture in the substantially vertical direction inside the reinforcing surface 75 and It is rotatably provided between a position in which it is in a substantially horizontal position through a cutout hole 76 formed in the reinforcing surface 75. Specifically, as shown in FIG. 9, when the drive piece 64 attached to the key cylinder 31 is in the lowered position, the restricting shaft portion 73 faces vertically downward, while when the drive piece 64 rises. The tip of the engaging shaft portion 72 is displaced upward so that the regulating shaft portion 73 is in a substantially horizontal posture. Here, the cutout hole 76 of the reinforcing surface 75 is formed by the intermediate sliding door 24.
The cutout hole 51 and the cutout hole 50 formed in the guide 43 are opened, so that the restriction shaft portion 73 is formed.
Is rotated through each of the notched holes 76, 51, 50 to a position in a substantially horizontal posture, the outer sliding door 22 and the intermediate sliding door 24 are prohibited from moving relative to each other, and the regulating shaft portion 73 causes the roller 5 to move.
The movement locus of No. 5 is obstructed, and by extension the first and second
The rotation of the link bars 25 and 26 is regulated to establish the locked state of the sliding door. The restriction shaft portion 73
Is provided with a cushioning member 73A made of resin, rubber or the like 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 in a state where the outer sliding doors 22 and 23 and the intermediate sliding door 24 completely close the opening 11.
As shown in FIG. 5, the first and second link bars 25 and 26 that constitute the link mechanism 60 maintain a gentle inclination in the left-right direction with the position of the rotation center axis 56 of the roller 55 as the maximum height position. Be done. 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 operating, that is, in the unlocked state, the roller 55 rises along the guide 43 as shown in FIG. While moving to the left side, 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 slide 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 lengths of the link bars 25 and 26 here are the same as those of the link bars 2.
Since the lengths are approximately the same as 5, 26, for example, as shown in FIG. 11, in a mode in which the cabinet 10 is stacked and used on the top plate 81 of the separate storage 80, the link mechanism 60 is provided below. At the same time, if the pull tabs 29 and 30 are also set close to the pull tabs 29 and 30, even if the window W is provided in each of the sliding doors 22 to 24, the link bars 25 and 26 will not be seen from the outside even when they are fully raised. It becomes possible to keep.

The outside sliding doors 22 and 23 and the intermediate sliding door 24
2 is restricted, 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 to rotate it. You can do it. As a result, the drive piece 64 mounted on the key cylinder 31 is raised from the lowered position, and at this time, the restriction shaft portion 73 of the stop bar 65 is changed from the vertical posture shown in FIG. 9 to the horizontal posture shown in FIG. It rotates to the posture and is positioned above the roller 55. Therefore, the outer sliding door 22 or 23 slides by a slight distance between the regulation shaft portion 73 and the roller 55, but after the roller 55 contacts the regulation shaft portion 73, the movement of the outer sliding door 22 or 23 is regulated. The Rukoto. In the present embodiment, the state where the tip of the regulating shaft portion 73 is located below the axis of the shaft portion 70 is in the unlocked state, but the tip of the regulating shaft portion 73 is higher than the axial line position of the shaft portion 70. If the position is set to the unlocked state, the regulating shaft portion 73
The above-mentioned separation distance that may occur between the roller 55 and the roller 55 can be eliminated, and the outer sliding door 22 or 23 is not slid even slightly.

In the above embodiment, the regulation shaft portion 73 is configured to block the movement locus of the roller 55, but 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 paths of 26.

In the above embodiment, the first and second
The end portions of the link bars 25, 26 are connected by supporting the support shafts 37, 42 on the first and second bearing portions 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 5, 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 into these holes to form the end connecting portion. You 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 and connected by inserting the pin after inserting the receiving member into the hole. It is a part to do. Therefore, the connection state can be easily released by removing the pin, and the assembly and disassembly are easier than the conventional type rivet.

[0025]

As described above, according to the present invention,
Since the stop bar is movably provided at a position that extends from the operation part and directly prohibits the relative movement of the sliding door, the interlocking sliding door is directly restricted by the stop bar, and the locking is highly reliable. It can be a mechanism.

Further, in a configuration in which the stop bar is provided rotatably at a position that extends to a part of the link mechanism and obstructs the movement trajectory of the link mechanism, the stop bar directly moves the relative movement of the sliding door. At the same time, the movement of the link mechanism can be regulated, and the reliability of the locked state can be further enhanced, and even if the sliding door is forcibly opened, sufficient strength can be imparted to this. it can. In addition, the operating portion and the link mechanism can be brought close to each other, and the length of the stop bar can be set to be short to achieve the downsizing of the entire locking mechanism.

Further, a roller for connecting a pair of symmetrically arranged link bars to each other and a guide for receiving the roller are provided, and the tip end side of the stop bar is provided so as to be retractable with respect to the guide. Since the structure regulates movement, the stop bar acts as a restriction position at a position approximately midway along the entire length of the link bar, which is a reaction force that can counteract an external force that attempts to open the sliding door in the locked state. Can be effectively generated, and
It is also possible to effectively avoid damage to the components that make up the locking mechanism.

Further, since the stop bar has a structure in which the restricting shaft portion is rotated in a substantially horizontal position through a predetermined key operation to interrupt the movement path of the link mechanism, the lock mechanism is configured without complicating it. In addition, even when it is supplied to the market as a knockdown type cabinet, it becomes possible for the user to assemble without burden. Further, according to the configuration in which the cushioning member is provided on the regulation shaft portion, it is possible to reduce the impact when the link mechanism comes into contact with the regulation shaft portion and also to prevent the generation of noise accompanying the contact.

[Brief description of drawings]

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

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 viewed from the back side of the sliding door.

FIG. 6 is a schematic rear view of the 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 trajectory of a roller.

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

FIG. 9 is a schematic perspective view of essential parts when the locking mechanism is in a non-operating state.

FIG. 10 is a schematic perspective view of essential parts 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 cabinets 11 openings 14 sliding doors 22 Outside sliding door 23 Outside sliding door 24 Middle sliding door 25 First Link Bar 26 Second Link Bar 31 key cylinder 43 Guide 55 Laura 60 link mechanism 62 Locking mechanism 65 stop bar 70 Shaft 73 Regulator shaft 73A cushioning member

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaaki Hattori 6-1, 1-1 Oimazanami Minami, Higashinari-ku, Osaka Within KOKUYO CORPORATION (72) Inventor Akihiko Matsuda 6-1-1, Oimari Minami, Higashisei-ku, Osaka No. Kokuyo Co., Ltd. (72) Inventor Kazumi Kagata 1450-1, Odamachi, Ueno City, Mie Prefecture Toyokuni Kogyo Co., Ltd. (56) Reference JP 2000-145230 (JP, A) JP 10-246049 (JP, A) Actual Kaihei 3-47998 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) E05B 65/44 E05B 65/08 E05C 21/00

Claims (4)

(57) [Claims] 1. A sliding door locking mechanism of a cabinet in which an intermediate sliding door is arranged between a pair of outer sliding doors, and each of these sliding doors is interlocked in an opening / closing direction via a link mechanism. An operating portion provided and a stop bar extending from the operating portion and movable to a position that directly prohibits relative movement of the one outer sliding door and the intermediate sliding door are provided , and the stop bar is the link mechanism. It extends to a part
It is rotatably installed at a position that obstructs the trajectory of the link mechanism.
Sliding door locking mechanism, characterized in that they are. 2.Place an intermediate sliding door between a pair of outer sliding doors
In addition to opening and closing each of these sliding doors via a link mechanism
For the sliding door locking mechanism of the cabinet that can be linked in any direction
Be careful From the operating unit provided on any one of the sliding doors,
Relative movement of the one outer sliding door and the middle sliding door while extending
With a stop bar that can be moved to a position that prohibits
Prepare, The link mechanism is rotatably connected and symmetrical.
The pair of link bars arranged in the position and the intermediate sliding door
It is provided and supported by the connecting part of the link bar
Guides that receive the received rollers and guide them in the vertical direction, and
It is installed on the side sliding door and supports the end of the link bar.
And a bearing for holding the stop bar.
Is installed so that the tip side of the
Is blocked by the roller Of sliding doors characterized by
Locking mechanism. 3. An intermediate sliding door is arranged between a pair of outer sliding doors.
In addition to opening and closing each of these sliding doors via a link mechanism
For the sliding door locking mechanism of the cabinet that can be linked in any direction
In addition, from any one of the operating unit provided in the sliding door,
Relative movement of the one outer sliding door and the middle sliding door while extending
With a stop bar that can be moved to a position that prohibits
The stop bar includes a shaft portion that extends substantially parallel to the surface of the sliding door.
And is provided at the tip of the shaft part and in the unlocked state
With a regulating shaft portion that is oriented in a substantially vertical posture, a predetermined key
By rotating the shaft portion in the circumferential direction through an operation,
Rotate the regulating shaft in a substantially horizontal position to move the movement mechanism of the link mechanism.
Locking mechanism for sliding doors, which blocks traces . 4. The locking mechanism for a sliding door according to claim 3, wherein a buffer member is provided on the restriction shaft portion.