JP4943038B2 - Door latching device - Google Patents

Description

  According to the present invention, a door that can be freely opened and closed in the front opening of the housing is provided with a latch that can be engaged with and disengaged from the engaged portion of the housing when the door is closed, and this latch can be operated by a handle provided on the front of the door. The present invention relates to a door latch device which can be engaged with and disengaged from an engaged portion.

Conventional door latch devices of this type are generally designed to release the latch by rotating the handle in one direction by pulling the handle pivotally attached to the door toward the front (for example, patents). Reference 1).
In addition, there is a type in which the latch can be released even if the handle is rotated in the left-right direction or the up-down direction (see, for example, Patent Documents 2 and 3).
JP-A-8-266348 JP 2004-332504 A Japanese Utility Model Publication No. 63-96177

However, in any of the above-described conventional devices, the operation direction of the handle is limited to one direction or two directions. Therefore, even if the handle is operated in other directions, the latch cannot be released.
On the other hand, for example, in a storage system in which a large number of cabinets, lockers, etc. are stacked one above the other and arranged side by side, the handle provided at the height of the door of the cabinet, etc. It is desired that the provided handle can be operated from above, and that the handle provided in the middle can be released from the left or right direction, and that all handles can be released. It is reasonable to have the same structure with the same design.
In order to satisfy such a requirement, it is necessary to be able to release the latch even if the handle is operated from either the vertical or horizontal direction.

  In view of the above problems of the prior art, the present invention can reliably release the latch even if the handle is operated from either the top, bottom, left or right direction, and the structure is simple. An object of the present invention is to provide a door latch device which can operate smoothly.

According to the present invention, the above problem is solved as follows.
(1) A door that can be freely opened and closed at the front opening of the housing is provided with a latch that can be engaged with and disengaged from the engaged portion of the housing when the door is closed, and one end of the operation plate is pivotally attached to the back of the door Then, the other end of the operating plate and the latch are engaged with the latch to engage the engaged portion of the housing in conjunction with the movement of the operating plate from the inoperative position to the operating position. It is linked with the linking means so as to move from the position to the non-engaged position where it is disengaged from the engaged part, and is provided integrally with the operating plate in the handle accommodating part where the front face provided on the door opens. And a handle having an operation portion located in front of the operation plate on the front surface, and when the operation plate is in the non-operation position, the operation portion is substantially parallel to the front surface of the door, and From this state, by pulling forward with the hands on the top and bottom or left and right edges of the operation unit The handle and the operating plate are rotated to the operating position .

  (2) In the above paragraph (1), the actuating plate is pivotally attached to the door with an axis parallel to the front surface of the door, and biasing means for biasing the actuating plate toward the inoperative position on the door is provided. Provide.

  (3) In the above item (1) or (2), the operation part is provided inwardly on the entire inner peripheral edge of the opening in the handle provided with the opening on the front surface.

  (4) In any one of the above items (1) to (3), the operation portion is provided radially from the entire outer peripheral edge of the front end portion of the handle.

  (5) In any of the above items (1) to (4), the linkage means pivots integrally with the latch so as to pivot, or a bent shaft provided at one end. The operation shaft pivotally provided on the door so that the latch can be pushed to the non-engagement position by the piece, and provided on the latch shaft or a part of the operation shaft, from the non-operation position of the operation plate to the operation position. And an arm that is rotated by the free end portion of the operating plate during rotation of the operating plate so as to rotate the latch to the non-engagement position via the latch shaft or the operating shaft. And

  (6) In any one of the above items (1) to (4), the linkage means is connected to the free end portion of the operating plate and the other end is connected to the latch, and moved to the operating position side of the handle. The rope is pulled to move the latch toward the non-engagement position.

According to the present invention, the following effects can be achieved.
According to the first aspect of the present invention, the handle and the operating plate can be operated even if the operating portion of the handle is operated from either the vertical direction or the left and right directions in a state where the operating plate is located at the non-operating position. It can be rotated to a position, whereby the door can be opened by reliably releasing the latch from the engaged portion of the housing through the linking means, which is convenient.
Further, since the handle and the operation plate can be integrally formed, the structure can be simplified and the number of parts of the linking member from the handle to the latch can be reduced so that the operation can be smoothly performed. be able to.

  According to the second aspect of the present invention, the operating plate is pivotally attached to the door with an axis parallel to the front surface of the door, and the door is provided with a biasing means for biasing the operating plate toward the inoperative position. Therefore, the thickness of the door and the handle and operating plate attached to the door can be reduced in thickness in the front-rear direction, and the operating plate and the handle can be connected with a single biasing means consisting of a spring with a simple structure. It can be biased toward the operating position, and the structure can be simplified.

  According to the third aspect of the present invention, since the operation portion is provided inwardly on the entire inner peripheral edge of the opening portion in the handle having the opening portion on the front surface, a hand is put into the opening portion of the handle and a finger can be arbitrarily placed It can be operated simply by hanging it on the operation part in this direction and pulling it forward, and it can be operated not only from the top and bottom and from the left and right, but also from the diagonal direction between them.

  According to the invention of claim 4, since the operation portion is provided radially from the entire outer peripheral edge of the front end portion of the handle, from any direction, a hand is applied to an arbitrary portion of the operation portion outside the handle, It can be operated simply by pulling it forward, and it can be operated not only from the top and bottom and from the left and right, but also from the diagonal direction between them.

  According to the fifth aspect of the invention, the structure of the linking means can be simplified and can be operated smoothly.

  According to the sixth aspect of the present invention, the structure of the linking means can be simplified and reduced in size and can be operated smoothly.

Embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a storage system in which three cabinets (A), (B), and (C) having the door latch device of the present invention are sequentially stacked.
All the handles (1) provided in each cabinet (A) (B) (C) have the same structure and design, but the structure of the latch device including each handle (1) is the same as that of the cabinet (A) ( B) Different from each other in accordance with the structure of (C).

The cabinet (A) is of a three-stage drawer type, and a handle (1) is provided at the center of the front plate (door in the present invention) (3) of each drawer (2).
The cabinet (B) has double doors, and the handle (1) is provided only on the right door of the left and right doors (4) and (4).
The cabinet (C) is a top-mounted type with double doors, and like the cabinet (B), the handle (1) is provided only on the right side of the left and right doors (5) and (5). ing.

Next, the latch device (D) provided in the cabinet (B) will be described in detail with reference to FIGS. 2 to 6 as an embodiment of the door latch device of the present invention.
The latch device provided in the cabinet (A) has substantially the same structure as that obtained by rotating the latch device (D) 90 ° to the side, and the latch device provided in the cabinet (C) The latch device (D) provided in the cabinet (B) has almost the same structure except for some dimensions, and thus the description thereof will be omitted.

  As shown in FIGS. 2 to 6, a right door (4) pivotably mounted with a hinge (not shown) on the right side of the front opening of the housing (6) in the cabinet (B). In the left side portion, a latch shaft (7) composed of an angular axis pointing in the vertical direction is disposed so as to be rotatable around its axis. The base end portion of the latch (8) is fixed to the upper and lower ends of the latch shaft (7).

As shown in FIG. 2, the latch (8) protrudes rearward of the door (4), and the rear end portion has a hook shape facing leftward. When the door (4) is closed, the housing (6) The upper stile (6a) (the lower latch (8) is inserted into the engagement hole (9) provided on the front surface of the lower stile (not shown)) and is the left edge of the engagement hole (9). It can be engaged with and disengaged from the engaged portion (10).
That is, the latch (8) is disengaged from the engaged portion (10) as shown by the solid line in FIG. The latch shaft (7) can be rotated about the axis of the latch shaft (7) to the disengaged position.

  In this example, for simplicity of explanation, the latch (8) is of a type that rotates integrally with the latch shaft (7). It may be of a type that slides in the direction.

  As shown in FIGS. 3 to 6, a square opening (11) for operating the handle (1) is provided on the front surface of the middle part in the vertical direction on the left side of the right door (4). On the other hand, a handle housing case (12) having a square opening (13) penetrating in the front-rear direction so as to communicate with the opening (11) is provided substantially at the center.

The handle housing case (12) has a thin box shape that opens rearward, and the rear end surface is closed by the rear cover (14), thereby forming the handle housing portion (15) therein.
At the edge of the opening (13) in the handle housing case (12), a short rectangular tube-shaped flange (12a) facing back is continuously provided.

The handle (1) includes a square vertical plate-shaped base (1a), a square tube portion (1b) facing forward from the outer peripheral edge of the base portion (1a), and an inward direction from the front end of the square tube portion (1b). the inward projection piece (1c) facing becomes from its inner end from the part-length of the forwardly facing rectangular tube-shaped projecting edge (1d), the inward projection piece (1c) surrounding the apertures of the front center of which The operating portion (1e) is formed by the protruding edge (1d).

  On the outer periphery of the rectangular tube portion (1b), a vertical plate-like working piece (working plate) (16) parallel to the base portion (1a) is integrally formed. The right side of the operating piece (16) is pivotally attached to the right side of the handle housing case (12) with a shaft (17) pointing in the vertical direction. A plurality of protrusions (16a) and (16a) are provided.

  The ridges (16a) and (16a) are provided on the right side of the intermediate portion of the latch shaft (7) facing the up and down direction, which is supported at the left end of the handle housing case (12), and the up and down 1 It can come into contact with the rear surfaces of the pair of arms (18) and (18).

  A spring receiving projecting shaft (19) is provided at the central portion in the vertical direction near the right side of the operating piece (16), and the biasing means is provided so as to be fitted around the projecting shaft (19). A compression coil spring (20) facing in the front-rear direction is contracted between the front surface of the operating piece (16) and the rear surface of the front piece (12b) in the handle housing case (12).

  As shown in FIG. 6 (a), the actuating piece (16) always has the rear surface of the base (1a) of the handle (1) attached to the rear cover (14) by the biasing force of the compression coil spring (20). The front end surface of the handle (1) is substantially parallel to the front surface of the door (4) and the ridges (16a) and (16a) are arms (18) and (18). Although it is in a non-actuated position that is in contact with or close to the rear surface of the handle, it opposes the biasing force of the compression coil spring (20), and the upper and lower or left and right edges of the operating portion (1e) of the handle (1) 6 and pulling forward, as shown in FIG. 6 (b), the left side front surface of the operating piece (16) comes into contact with the rear end of the flange (12a) and the ridges (16a) (16a ) Pushes the rear surfaces of the arms (18) and (18) forward to rotate the arms (18), (18), the latch shaft (7), and the latch (8) to the disengaged position. It is designed to rotate to.

  As shown in FIG. 3, on the left side of the handle housing case (12), the latch (8) is constantly urged toward the engagement position via the latch shaft (7), and the operating piece (16) A torsion coil spring (22) which is also an urging means for constantly urging the spring toward the inoperative position is provided.

  Another arm (23) projects from the right side surface of the latch shaft (7) below the arm (18). In front of the tip of the arm (23), a front end face is exposed on the front surface of the door (4), and a key (not shown) is attached to the cylinder lock (24) mounted on the handle housing case (12). The left end of the dead bolt (25) that has been moved forward and backward from the rear part of the cylinder lock (24) by entering and turning enters the turning locus of the tip of the arm (23). It is arranged so as to be moved (locked) or moved away from the turning locus (unlocked).

  In this embodiment, the operating piece (16) and the latch (8) are moved to the operating position side of the operating piece (16) by the latch shaft (7) from which the arms (18) and (18) project. Linking means (26) is formed so that the latch (8) is moved to the non-engaging position where the latch (8) is disengaged from the engaged portion (10) of the housing (6). A latch device (D) is formed by the latch (8), the linkage means (26), the handle housing case (12), the handle (1), the operating piece (16), and the like.

Next, the operation of this embodiment will be described.
When the handle (1) is not operated, the handle (1) is located at the inoperative position shown in FIGS. 5 (a) and 6 (a), and the latch (8) and the latch shaft (7) are 2 is located at the engagement position indicated by the solid line.

  From this state, insert a finger into the front end opening of the handle (1), hang the finger on the top and bottom or left and right edges (including the middle diagonal direction) of the operation part (1e), and pull it forward. As shown in FIGS. 5 (b) and 6 (b), the operating piece (16) is rotated about the shaft (17) to the operating position together with the handle (1).

  At this time, the arm 18 and 18 is pushed forward by the forward rotation of the left end of the operating piece 16, and the latch shaft 7 and the latch 8 are shown in FIG. And the door (4) can be opened.

  In this case, the operating piece (16) is rotated to the operating position together with the handle (1) regardless of whether the upper, lower, left or right edge of the operating portion (1e) of the handle (1) is pulled forward. Since the latch (8) is moved to the non-engagement position, the latch (8) can be reliably released even if the handle (1) is operated from either the top, bottom, left or right direction. Good.

As mentioned above, although preferable embodiment of this invention was described, this invention can also be implemented in the aspect deform | transformed as follows within the range which does not deviate from a claim.
(a) At least the operation portion (1e) of the opening (11) and the handle (1) in the above embodiment is circular, and the operation portion (1e) is provided on the entire inner periphery of the front opening of the handle (1). The handle (1) can be easily operated not only from above and below, from the left and right, but also from an oblique direction between them.

(b) In the latch device for the drawer (2) in the cabinet (A), the linkage means pivots integrally with the above-mentioned latch (8) so that the latch shaft (7) is pivoted on the door. Instead, a bending piece provided at one end is provided with an operating shaft directed in the left-right direction pivoted on the front plate (3) so that the latch can be pushed to the disengaged position, and one of the operating shafts. Provided at the operating portion, and when the operating piece is rotated from the non-operating position to the operating position, the operating piece is rotated by the free end of the operating piece so as to rotate the latch to the non-engaging position via the operating shaft. It shall be equipped with the arm which made it.

(c) As shown in FIGS. 7 (a) and 7 (b), the handle (1) in the above embodiment is placed on the front surface of the base portion (50a) similar to the base portion (1a), with a short cylindrical portion facing in the front-rear direction. (50b), and by providing an inwardly projecting piece (50c) and an outwardly projecting piece (50d) at the front end of the cylindrical part (50b), the inward and outward operation parts (50e) ( Replace with the handle (50), which is 50f).
Other configurations are the same as those in the above embodiment.

(d) As shown in FIGS. 7 (a) and 7 (b), the linkage means (26) in the above embodiment has the free end portion of the operating piece (16) and the latch (8) with the rope (51). When the operating piece (16) is connected and rotated from the non-operating position shown in FIG. 7 (a) to the operating position shown in FIG. 7 (b) by the operation of the handle (50), The strip (51) is pulled so that the latch (8) is rotated from the engaged position shown in FIG. 7 (a) to the disengaged position shown in FIG. 7 (b).

It is a perspective view which shows the storage system which piled up three cabinet (A) (B) (C) provided with the latch device of the door of this invention sequentially. FIG. 2 shows an embodiment of the present invention, and is an enlarged cross-sectional plan view taken along II-II in FIG. 1. Similarly, it is an enlarged front view of the handle portion of the door of the cabinet (B). Similarly, it is a disassembled perspective view of the principal part. It is a general | schematic expansion vertical side view along VV of FIG. 3, Comprising: (a) is a non-operation state, (b) is a figure which shows a state when a handle is pulled. 4A and 4B are schematic enlarged cross-sectional plan views taken along VI-VI in FIG. 3, in which (a) is a non-operating state and (b) is a diagram showing a state when a handle is pulled. It is a cross-sectional top view of the modification of this invention, Comprising: (a) is a non-operation state, (b) is a figure which shows a state when a handle is pulled.

Explanation of symbols

(A (B) (C) Cabinet
(D) Latch device
(1) Handle
(1a) Base
(1b) Square tube
(1c) Inward protruding piece
(1d) Rim
(1e) Operation unit
(2) Drawer
(3) Front plate (door)
(4) (5) Door
(6) Housing
(6a) Upper town
(7) Latch shaft
(8) Latch
(9) Engagement hole
(10) Engaged part
(11) Opening
(12) Handle storage case
(12a) Flange
(12b) Front piece
(13) Opening
(14) Rear cover
(15) Handle housing
(16) Actuating piece (actuating plate)
(16a) ridge
(17) Axis
(18) Arm
(19) Projection shaft
(20) Compression coil spring (biasing means)
(21) Stopper
(22) Torsion coil spring (biasing means)
(23) Arm
(24) Cylinder lock
(25) Deadbolt
(26) Linking means
(50) Handle
(50a) Base
(50b) Cylindrical part
(50c) (50d) Projection
(50e) (50f) operation unit
(51) Rope

Claims (6)

A door that can be freely opened and closed in the front opening of the housing is provided with a latch that can be engaged with and disengaged from the engaged portion of the housing when the door is closed, and one end portion of the operation plate is pivotally attached to the rear surface of the door. The other end of the operating plate and the latch are interlocked with the movement of the operating plate from the non-operating position to the operating position, and the latch is engaged from the engaging position for engaging the engaged portion of the housing. It is linked with the linkage means so as to move to the non-engagement position where it is disengaged from the engaged portion, and is provided integrally with the operation plate in the handle housing portion where the front surface provided on the door opens. When the operation plate is located at the non-operation position, the operation unit is substantially parallel to the front surface of the door, and the handle having the operation unit located in front of the operation plate is By pulling forward by placing a hand on the upper and lower or left and right edges of the operation unit, Hand and the actuation plate and the door latch apparatus being characterized in that as is pivoted to the operating position.   2. The door latch according to claim 1, wherein the operating plate is pivotally attached to the door with an axis parallel to the front surface of the door, and the biasing means for biasing the operating plate toward the inoperative position is provided on the door. apparatus.   The door latch device according to claim 1 or 2, wherein the operation portion is provided inwardly on an entire inner peripheral edge of the opening in a handle having an opening on the front surface.   The door latch device according to any one of claims 1 to 3, wherein the operation portion is provided radially from the entire outer peripheral edge of the front end portion of the handle.   The linkage means is configured to be able to push the latch to the non-engagement position by a latch shaft pivoted on the door so as to rotate integrally with the latch or a bent piece provided at one end. An operating shaft pivoted on the door, and provided on a part of the latch shaft or the operating shaft, are rotated by the free end of the operating plate when the operating plate is rotated from the non-operating position to the operating position. The door latch device according to any one of claims 1 to 4, further comprising an arm configured to rotate the latch to a non-engagement position via the latch shaft or the operation shaft. The linking means has one end connected to the free end of the operating plate and the other end connected to the latch, and is pulled by movement toward the operating position side of the handle so that the latch moves to the non-engaging position side. The latch device for a door according to any one of claims 1 to 4, wherein the rope is a strip.

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