JP2008121321A - cabinet - Google Patents

Abstract

Provided is a cabinet in which a closed state is maintained without a latch claw escaping even if an external force is applied to the closed door from the back side.
[Means] The latch claw 12 includes a fitting portion 12e that enters the engagement hole 21 of the main body 1 and a flange portion 12f that protrudes laterally from the insertion portion 12e. is doing. The engaging portion 13 of the main body 1 is formed in the front plate 7 a of the flange 7 and has an engaging hole 21 and a cover 22. The cover 22 includes a stopper portion 27. The latching surface 30 of the latch claw 12 and the stopper surface 28 of the cover 22 are opposed to the front plate 7a of the flange 7 in plan view. Compared with the conventional example shown in FIG. 6A, the locking surface 30 and the stopper surface 28 are deeply engaged. For this reason, the latch claw 12 rotates and rotates even when an outward external force F acts on the door 2. Never do.
[Selection] Figure 5

Description

  The present invention relates to a horizontal rotating door type cabinet provided with a latch device.

  2. Description of the Related Art A cabinet (a hinged door cabinet) in which a door is attached to a main body that opens forward so as to be horizontally rotatable is generally provided with a latch device that holds the door in a closed state. The latch device includes a latch claw provided on the door and an engaging portion formed on a collar portion of the main body. An engagement hole is formed in the engagement portion of the main body, while the latch claw has a fitting portion that fits inside the engagement hole, and a laterally extending flange portion projects from the fitting portion. . Then, the door is held open and immovable by applying a locking surface facing the outside of the main body to the stopper surface on the back side of the engaging portion in the closed state (locking posture) of the collar portion. .

  In addition, the latch pawl is biased by a spring so as to rotate in the direction of engagement with the engaging portion, and the surface of the latch pawl that faces the main body when the door is closed is inclined. The latch claw is a guide surface, and after the slant surface of the collar hits the inner periphery of the engagement hole and rotates against the spring, the latch pawl returns to the locked position by the spring as soon as the door is closed. It is so-called kicking engagement that moves. Further, the latch pawl is rotated to the unlocking posture by pulling the handle provided on the door.

Since the front plate of the collar part of the main body forms the engaging part, the stopper surface of the engaging part extends in parallel with the opening surface of the main body in plan view (the front surface of the collar is the opening surface of the main body). In addition, the locking surface of the collar portion of the latch claw is also in a posture parallel to the opening surface of the present invention in plan view in the closed state (see, for example, Patent Document 1).
Utility Model Registration No. 2541330

  By the way, vibrations may act on the cabinet due to various causes such as earthquakes.For this reason, for example, an article stored inside the main body is displaced and hits the back side of the door, and an external force that opens the door acts on the door. There are things to do. Alternatively, an article stored inside the main body may collapse and hit the back surface of the door, so that an outward external force acts on the door. Then, there is a problem that the latch claw returns to the unlocking posture and rotates to open the door, or the hook portion of the latch claw is missing.

  The main object of the present invention is to solve this problem.

  The cabinet according to the present invention has, as basic components, a main body that opens forward, a door that is attached to the main body so as to be horizontally rotatable in order to close the opening of the main body, and the door that is held closed. A latch claw horizontally attached to the door, an engaging portion provided on the main body so that the latch claw can be engaged, and the latch claw being urged to engage with the engaging portion. And a spring.

  The engagement portion is plate-shaped and has an engagement hole into which the latch claw is fitted and removed, while the latch claw has a fitting portion that enters the engagement hole in the closed state. A hook part that projects sideways in a plan view is provided integrally with this part, and the door opens when the locking surface of the hook part facing the outside of the main unit hits the stopper surface inside the engagement part when the door is closed. Further, the surface of the hook portion of the latch claw that faces the main body when the door is turned and closed is brought into contact with the inner peripheral edge of the engagement hole so that the latch claw escapes and rotates. In order to allow, the guide surface is inclined in plan view.

  In the first aspect of the present invention, in the above-described configuration, the locking surface of the flange portion of the latch claw is a portion near the base of the flange portion in a plan view in the closed state, which is far from the opening surface of the main body and is on the tip side. Is close to the opening surface of the main body, while the stopper surface of the engaging portion in the main body is in relation to the opening surface of the main body so that a portion close to the engaging hole in a plan view protrudes toward the back side of the main body. Are formed in a non-parallel manner.

  According to a second aspect of the present invention, in the first aspect, the stopper surface of the engaging portion in the main body is an inclined surface in which the distance from the opening surface of the main body gradually decreases as the distance from the engaging hole increases in plan view.

  According to a third aspect of the present invention, in the first or second aspect, the engaging portion of the main body includes a metal plate collar portion that constitutes a part of the main body, and a resin cover attached to the collar portion. The cover includes a frame-like portion that covers the inner periphery of the engagement hole, and a stopper portion that is located inside the collar and that can be contacted by the latching surface of the latch claw is integrated with the frame-like portion. The rear surface of the stopper portion is the stopper surface. Note that the cover can also be referred to as an edge member, an edge member, or a protective member.

  When the door is closed and in close contact with the front surface of the main body, the locking surface of the latch claw in the locked position is not in close contact with the stopper surface of the engaging portion. There is a slight gap (clearance) between the stopper surface (otherwise, the latch claw cannot be smoothly engaged and disengaged with the engaging portion).

  In the state where the latching surface of the latch claw and the stopper surface of the engaging portion are in the closed state and parallel to the opening surface of the main body as in the prior art, the external force in the opening direction is applied to the door by the impact from the inside of the main body. When this occurs, there is a phenomenon in which the latch claw's locking surface slides from the stopper surface of the engaging portion, causing the latch claw to escape and rotate toward the unlocking position, which is the cause of the door opening movement. It was. In addition, when the latch claw rotates and revolves, the latch claw tends to rotate in a state where the locking surface is pointed to the inner peripheral edge of the engagement hole in the engagement portion in plan view. Thus, it is presumed that a large moment acts on the collar part of the latch claw, causing the collar part to be lost. That is, in the prior art, the engagement between the latch claw and the engaging portion is shallow, and therefore it can be said that the door opening movement or the latch claw is broken due to impact or vibration from the inside.

  On the other hand, in the present invention, the locking surface of the collar portion of the latch claw is inclined, while the stopper surface of the engaging portion protrudes toward the back of the main body at a portion close to the engaging hole in plan view. Therefore, even when an external force is applied to the door in the closed state, the latch pawl is prevented from rotating back when the latch pawl is in close contact with the stopper surface of the engaging portion in the door closed state. As a result, the opening of the door is prevented. In short, in the present invention, since the engagement between the latch claw and the engaging portion is deep, it is possible to prevent the door from being unexpectedly opened due to an impact or vibration.

  If both the latching surface of the latching claw and the stopper surface of the engaging part are formed on the inclined surface as in claim 2, the latching claw is latched when an external force is applied to the door while the locking claw remains locked. Since the locking surface of the claw and the stopper surface of the engaging portion are in close contact with each other, it is possible to prevent a large moment from acting on the collar portion of the latch claw, and as a result, the latch claw can be prevented or significantly prevented from being damaged. There are advantages that can be made.

  By the way, the engagement hole of the engagement part is generally formed by stamping by press working, but in the state where the engagement hole is exposed, processing for removing burrs and edges and ensuring safety is necessary. There is a problem that this processing takes time. On the other hand, if the structure of claim 3 is adopted, the inner peripheral edge of the engagement hole is covered with the cover, so that it is not necessary to perform processing to remove burrs and edges, and the latch claw slips at the time of kicking engagement. There is also an advantage that the cover can also serve as a reinforcing member, and the latch claw engagement state maintaining function can be further improved.

  Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 5 show the first embodiment, FIG. 6 shows the second embodiment, and FIG. 7 shows the third to fifth embodiments. Hereinafter, description will be made in order from the first embodiment. Each embodiment is embodied in a steel cabinet.

(1). Outline of First Embodiment FIG. 1A is an overall perspective view of a cabinet. As shown in FIG. 1A, the cabinet includes a main body 1 and two horizontally-rotating doors 2. It is a double-spread type (or double-spread type). The main body 1 has left and right outer plates 3, a top plate 4, a bottom plate 5, and a back plate 6 and opens forward. The front end portion of the top plate 4 is continuous with the hollow upper collar 7, while the front end portion of the bottom plate 5 is continuous with the hollow lower collar 8.

  In addition, an inner plate 9 is disposed inside the left and right outer plates 3 with a certain space therebetween, and the front end of the outer plate 3 and the entire inner plate 9 are integrally continuous. For this reason, the left and right side plate portions of the main body 1 are hollow, and the front surfaces of the main body are constituted by the front surfaces of the upper and lower flanges 7 and 8 and the front surfaces of the side plate portions. A group of slots 10 arranged in the vertical direction is formed at two front and rear portions of the inner plate 9 of the main body 1, and the shelf board 11 is supported by metal fittings attached to the slots 10. A reinforcing member may be fixed to the inner surface of the outer plate 3 and the slot 10 may be formed in the reinforcing member.

  The left and right doors 2 are attached to the main body 2 so as to be horizontally rotatable by hinge devices attached to the left and right end portions of the upper and lower rods 7 and 8. Resin latch claws 12 constituting a latch device are horizontally pivoted at two locations on the upper and lower sides of the door 2 near the free end, while the front plates 7a and 8a of the upper and lower rods 7 and 8 in the main body. A part of the engagement portion 13 is engaged with the latch claw 12.

  Further, the latch claw 12 is attached to the vertically long support shaft 14 so as not to be relatively rotatable, and a part of the support shaft 14 enters a pulling device 15 provided on the door 2. The pulling device 15 includes a pulling handle (not shown) that can be pulled from the outside of the door 2, and the latching claw 12 is engaged with a latching claw 12 by a spring (not shown) built in the pulling device 15. It is urged | biased by the direction which engages 13 and becomes selfish. 1B is a sectional view taken along the line B-B of FIG. 1A in a closed state. As can be clearly understood from this figure, the door 2 has a back plate 17 disposed inside the outer plate 16. And as a whole, it is formed in a hollow shape. Of course, the back plate 17 is not necessarily required.

  Details of the latch device will be described below with reference to FIG. 2 and subsequent drawings in addition to FIG. 2 is a partial rear view of the upper portion of the door 2, FIG. 3A is an exploded perspective view of the engaging portion 13, and FIG. 2B is a part of a method for fitting a cover constituting the engaging hole 13. FIG. 4 is a sectional view showing the movement of the latch claw 12 when the door 2 is closed, as viewed from the IV-IV direction of FIG. 1 (B). FIG. FIG. 5B is a cross-sectional plan view illustrating the operation of the embodiment. FIG.

(2) Details of the latch device Although the latch claw 12 is arranged above and below the door 2, the latch device is a form of the vertical object, so only the upper part will be described in the following description. As shown in FIG. 1 (B), the four rounds of the outer surface plate 16 constituting the door 2 are folded inward to form a channel portion (groove portion) 16a having a U-shaped cross section, and the channel portion 16a and the back plate 17 Together, the entire door 2 is hollow. A bearing member 19 made of sheet metal is disposed on the upper portion of the hollow portion of the door 2 near the free end, and is fixed to the outer plate 16 by welding, and the bearing portion 12a of the latch claw 12 is attached to the bearing member 19. It is fitted so as to be rotatable (the lower end portion of the support shaft 14 is supported by the member of the pulling device 15).

  An upper and lower ring-shaped portions 12b are integrally formed at the base end portion of the latch claw 12, and a bearing portion 12a is formed at the upper cylindrical portion 12b. The latch claw 12 is formed with a rotation restricting portion 12c that hits the back surface of the outer plate 16 in the locked posture. Further, as shown by a one-dot chain line in FIG. 2, a notch 20 for exposing the latch claw 12 is formed in the back plate 17 constituting the door 2.

  For example, as shown in FIG. 3A, the upper collar 7 has a horizontal piece 7b as a front plate 7a and an upward inner lip 7c and is formed in a substantially hollow shape. The front plate 7a of the upper collar 7 is formed by forming a horizontally-long rectangular engagement hole 21 and attaching a synthetic resin cover 22 to the engagement hole 21 in the front plate 7a.

  The cover 22 has flanges 23, 24, and 25 that overlap the outer surface around the engagement hole 21, and is formed in a frame shape with front and rear openings as a whole (thus, precisely, the interior surrounded by the cover 22 is Becomes the engagement hole.) Further, the upper and lower flanges 23 are formed with upper and lower frame plates 26 that enter the inside of the upper flange 7 from the engagement holes 21.

  The upper and lower frame plate 26 is formed with a laterally extending portion 26a extending on the back side of a portion of the front plate 7a of the upper collar 7 located closer to the center of the frontage of the main body 1 than the engagement hole 21, and A stopper portion 27 that overlaps the back surface of the front plate 7a of the upper collar 7 is integrally continuous with the extending portion 26. The rear surface of the stopper portion 27 is a stopper surface 28 that is inclined so that the distance from the front plate 7a in the upper collar 7 becomes narrower from the base of the stopper portion 27 to the tip.

  Of the left and right flanges 24, 25, the center-side flange 24 (that is, a flange extending in parallel with the stopper portion 27 in a front view) located on the center side of the front opening of the main body 1 has a slight left-right width dimension. Further, the center-side flange 24 and the stopper portion 27 are integrally continuous. The lateral width dimension of the side flange 25 located on the opposite side of the center flange 24 across the engagement hole 21 is larger than the lateral width dimension of the center flange 24. The engaging claw 29 is integrally formed on the edge of the engaging hole 21 to be caught from the back side.

  When the cover 22 is attached to the front plate 7a of the upper collar 7, as shown in FIG. 3B, the laterally extending portion 26a of the frame plate 26 is first inserted into the engagement hole 21 in an oblique posture in plan view. By inserting the upper flange 7 into the inside of the upper flange 7, one edge of the engagement hole 21 of the front plate 7 a is sandwiched between the center flange 24 and the laterally extending portion 26 a of the cover 22, and then the side flange 25 is pushed to engage. The pawl 29 may be engaged with the inner side of the engagement hole 21.

  As shown in FIG. 4, the latch claw 12 is basically the same as the conventional one. As shown in FIG. 4, the base 12d located outside the main body 1 in the closed state and the base 12d are integrally connected to the latch 12 and the engagement hole in the closed state. 21 is provided with a fitting portion 12e that is inserted into the inside of the cover 21. The fitting portion 12e is integrally formed with a laterally extending flange portion 12f that is located on the back side of the stopper portion 27 of the cover 22 in the closed state.

  The surface of the flange portion 12f that faces the stopper portion 27 in the closed state (locked posture) is an inclined locking surface 29 that is inclined at the same angle in the same direction as the stopper surface 28 of the stopper portion 27 in plan view. Yes. Further, the surface of the flange portion 12f that faces the main body 1 when the door 2 is closed and closed is an inclined guide surface 31 that approaches the fitting portion 12e toward the tip. The guide surface 31 may be curved in an arc shape as a whole.

(3) Explanation of movement The function of the latch device is the same as the conventional one. When the latch device 12 is pushed against the front surface of the door 2, the latch claw 12 has the guide surface 31 of the cover 22 as shown in FIG. When the door 2 is closed, the latch pawl 12 is released from the contact with the cover 22 and is moved toward the locked position by the spring. Then, as shown in FIG. 4 (C), the door 2 is held in a closed state.

  When the door 2 is completely closed, there is a slight gap 32 between the locking surface 30 of the latch claw 12 and the stopper surface 28 of the cover 22 (the rear surface of the periphery of the door 2 or the main body 1). In many cases, a rubber cushion is provided on the front surface. In this case, since the door 2 is lightly pressed in the opening direction by the elastic force of the cushion, the latching surface 30 of the latch claw 12 is a stopper of the cover 22. In close contact with the surface 28).

  Now, for example, an external force F may act on the closed door 2 from the back side for some reason, for example, an article stored inside the main body collapses and hits the back surface of the door 2.

  Then, as shown in FIG. 5A as a comparative example, the locking surface 30 ′ of the latch claw 12 ′ and the stopper surface of the engaging portion 13 ′ are the main body 1 with the door 2 closed as in the prior art. When the inner edge portion 27a 'of the stopper portion 27 is slightly bent and deformed by the pressing force of the latch claw 12', it is as shown by a thick solid line. In addition, the latching surface 30 'of the latch claw 12' can easily escape from the stopper portion 27 ', and as a result, the latch claw 12' returns to the unlocking posture and rotates.

  On the other hand, in this embodiment, since the latching surface 30 of the latch claw 12 and the stopper surface 28 of the engaging portion 13 are inclined, in other words, the latching surface 30 and the stopper surface 28 are the main body in a plan view. 1 is crossed at a certain angle θ with respect to a line parallel to the front surface of 1, so that the latch claw 12 and the engaging portion 13 are engaged with each other even if a forward external force is applied to open the door 2. Therefore, it is possible to prevent the door 2 from opening unexpectedly.

  Further, in the conventional example, as shown in FIG. 5A, when the latch claw 12 escapes and rotates, the distal end portion of the flange portion 12f 'may come into strong contact with the stopper portion 27'. As a result, a phenomenon that the flange 12f 'is damaged from its root is observed. To prevent this, the latch pawl 12' has to be thickened.

  On the other hand, in this embodiment, even if a forward external force F acts on the door 2, the latch claw 12 does not escape and rotate, so that the contact state between the locking surface 30 and the stopper surface 28 is reliably maintained. Therefore, it is possible to prevent a large moment from acting on the flange portion 12f of the latch claw 12, and as a result, the latch claw 12 can ensure the necessary strength and durability without being excessively thick. The cover 22 can be attached to the upper collar 7 by screwing or the like. However, when the configuration of the present embodiment is adopted, there is an advantage that the stopper portion 27 is integrally formed and can be attached with one touch. .

  If the door 2 is closed with force, the latch claw 12 may dance due to impact and vibration, and the door 2 may return to the open state. However, the present invention is also effective in this respect. Presumed to be.

  That is, first, the conventional example will be described. When the latch claw 12 once returns to the unlocked posture after being in the locked posture, in the conventional example, the latch claw 12 ′ escapes as shown by a thin solid line in FIG. Even if the locking surface 30 'tends to be separated from the engaging portion 27' as soon as it rotates, the locking surfaces 30, 30 'of the latch claws 12, 12' are in contact with the stopper portions 27, 27 '. It is considered that slip occurs between the latch claw 12 'and the stopper surface 28', and the latch claw 12 'easily escapes and rotates as it is.

  On the other hand, in the present invention, as shown by a thin solid line in FIG. 5B, even if the latch claw 12 escapes and rotates, it is difficult to separate from the engaging portion 27, and the locking surface 30 is the stopper surface 28. It is understood that the latch claw 12 is in a state in which it is difficult for the latch claw 12 to turn and rotate in the state of hitting, and therefore, the dance phenomenon of the latch claw 12 can be suppressed and the door 2 can be reliably closed.

(3). Second to Fifth Embodiments In the second embodiment shown in FIG. 6, the stopper portion 27 is formed by folding the front plate 7a of the upper collar 7 back. The other inner peripheral edge of the engagement hole 21 is folded back.

  In the third embodiment shown in FIG. 7A, when the cover 22 is provided on the engaging portion 13, the locking surface 29 of the latch claw 12 and the stopper surface 28 of the engaging portion 13 are arcuate in plan view. (Curved shape). Such forms are also included in the “tilt” recited in the claims. In the fourth embodiment shown in FIG. 7B, the stopper surface 28 inclined in plan view is formed by bending the stopper portion 27 of the front plate 7a of the upper collar 7 to the back side.

  In the fifth embodiment shown in FIG. 7C, when a part of the front plate 7a of the upper collar 7 is formed with the stopper portion 27, the inner peripheral edge of the stopper portion 27 is folded back to form the inward projection 27a. Accordingly, the stopper surface 28 is formed in a stepped shape, and the locking surface 30 of the latch claw 12 is also formed in a stepped shape corresponding to the stopper surface 28. In this embodiment, the locking surface 28 is closer to the opening surface of the main body 1 than the one near the base of the flange portion 12f.

(4). Others The present invention can be embodied in various ways other than the above embodiment. For example, the engaging portion is not necessarily required to use the collar portion of the main body, and a dedicated member different from the collar can be fixed to the main body. In the case where a resin cover is provided on the engaging portion, it is also possible to provide it only on the portion that becomes the stopper portion.

  Further, the door may be of a single opening type, and the latch claw can be provided only at the upper part or the lower part of the door. Further, the cabinet can be provided with a drawer and an open type storage unit in addition to the storage unit covered with the horizontal rotation type door (that is, at least part of the cabinet is closed with the horizontal rotation type door). There should be a storage unit.) Further, the cabinet body and door may be made of wood or resin.

(A) is a perspective view of a cabinet, (B) is a BB sectional view of (A) in a closed state. It is a partial rear view of the upper part of the door 2. (A) is the isolation | separation perspective view of an engaging part, (B) is a partially broken top view which shows the fitting method of a cover. It is sectional drawing which shows a motion of the latch nail | claw at the time of door closing movement, Comprising: It saw from the IV-IV view direction of FIG.1 (B). (A) is a plane sectional view showing the operation of the conventional example, and (B) is a plane sectional view showing the operation of this embodiment. It is a figure which shows 2nd Embodiment. It is a figure which shows 3rd-5th embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Door 7,8 框 12 Latch claw 12e Insertion part 12f 鉤 part 13 Engagement part 21 Engagement hole 22 Cover 27 Stopper part 28 Stopper surface 30 Locking surface

Claims (3)

A main body that opens forward, a door that is horizontally attached to the main body to close the opening of the main body, and a latch that is horizontally attached to the door to hold the door closed. A claw, an engagement portion provided on the main body so that the latch claw can be engaged, and a spring that biases the latch claw to engage with the engagement portion.
While the engaging portion is plate-shaped and has an engaging hole into which the latch claw is fitted and removed, the latch claw has a fitting portion that enters the engaging hole in the closed state, and the fitting portion A flange that projects sideways in a plan view is provided as an integral part, and when the door is closed, the locking surface facing the outside of the main unit hits the stopper surface on the inside of the engagement section, and the door cannot be opened and moved. Furthermore, the surface of the latch claw's collar that faces the main body when the door is closed and closed is allowed to hit the inner periphery of the engagement hole and allow the latch claw to escape and rotate. Therefore, the guide surface is inclined in plan view.
A cabinet called
In the latch claw, the locking surface of the hook part is close to the opening surface of the main body while the portion near the base of the hook part is close to the opening surface of the main body in the plan view in the closed state, The stopper surface of the engaging portion in the main body is formed non-parallel to the opening surface of the main body so that a portion close to the engaging hole in a plan view protrudes toward the back side of the main body.
cabinet. The stopper surface of the engaging portion in the main body is an inclined surface in which the distance from the opening surface of the main body gradually decreases as the distance from the engaging hole in a plan view is increased.
The cabinet according to claim 1. The engaging portion of the main body is composed of a metal plate-made collar portion that constitutes a part of the main body, and a resin cover attached to the collar portion, and the cover has an inner periphery of the engaging hole. A frame-shaped portion is provided, and a stopper portion that is located inside the collar portion and that can be contacted by a latching surface of the latch claw is integrally formed on the frame-shaped portion, and the rear surface of the stopper portion is the stopper. Face,
The cabinet according to claim 1 or 2.

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