JP5344347B2 - Cabinet door - Google Patents

Description

  The present invention relates to a mechanism for locking a door such as a cabinet, and more particularly to a door locking mechanism for opening and closing three or more sliding door type door plates in synchronization with each other using a link bar.

  As a door locking mechanism in which three or more door plates such as thin metal cabinets are synchronously linked by a link bar, each door plate (at least the central door plate and any one of both end sides) In addition to the method of fixing the combination of the door plates) and (B) the method of engaging and fixing the frame body side ends of the door plates at both ends with the opposing frame members, (C) fixing the link bar so that it cannot move. A method has been proposed.

As a method of fixing the link bar of (C), for example, the following methods C1 to C4 have been proposed.
(C1) A method of providing a key capable of fixing the link bar so that the link bar cannot be moved up and down at the position of the door plate facing the vicinity of the center of the link bar (see, for example, Patent Document 1).
(C2) A method of locking the protruding shaft of the sliding portion of the frame body side end portion of the link bar so as not to move with a key having a rotating bowl-shaped portion provided at the frame body side end portion of the door plate (for example, Patent Document 2) reference).
(C3) A method of fixing the sliding portion in the vicinity of the center of the link bar so as not to move up and down via the operation transmission mechanism with a key provided at the frame body side end of either door plate on both ends (for example, Patent Document 3).
(C4) The end of the link bar that is separated from the frame by approximately one door plate is made non-rotatable via the operation transmission mechanism by the key provided at the frame side end of one of the door plates on both ends. A fixing method (for example, see Patent Document 4).

Japanese Patent Laid-Open No. 2000004156356 Japanese Patent Laid-Open No. 11-81787 JP 2000-282755 A Japanese Patent Laid-Open No. 20040298

However, in the method of providing the key on the center side of the central door plate or the door plates on both ends as in the above (A) and (C1), the key is flat compared to the case where the key is provided under the handle near the frame. There is a problem in that only the keyhole portion exists in the surface, which is not preferable in terms of the appearance design. Moreover, since the stress for locking the door plate is supported on the surface side of the door plate, the surface of the door plate may be deformed due to insufficient strength depending on the thickness dimension of the door plate.
The method (B) has a problem that a plurality of keys are required to fix the door plates at both ends, the number of components increases, and the cost is high because the keys are expensive. .
Further, in the method (C2), since the shaft of the sliding portion is projected, a metal shaft longer than the other is required, and the stress for locking the door plate is supported on the surface side of the door plate. Depending on the thickness dimension, the surface of the door plate may be deformed due to insufficient strength.
Further, the methods (C3) and (C4) have a problem that the number of parts increases, the structure becomes complicated, and the parts cost increases.

  Therefore, in order to solve the above-mentioned problems, the present invention can make the keyhole at the end of the door plate, receive the locking stress at the reinforcing portion of the door plate, can be configured with standard parts with a simple structure, and the parts cost An object of the present invention is to provide a lock mechanism for a cabinet door with a small increase in the number of doors.

In order to solve the above problems, the lock mechanism according to the present invention is a door lock mechanism that opens and closes in synchronization with each other by connecting three or more sliding door type door plates made of metal thin plates with a link bar, A slider attached to the sliding end of the link bar; and a recess formed in the vicinity of the stop position of the slider in the closed state of the door on the rail on which the link bar slides; Fitting means that is detachable with respect to the recess via the slider, and lock means that operates to fit the fitting means into the recess when the door is locked. .
According to this aspect, a keyhole can be made into the edge part of a doorplate, and the stress to lock can be received in the reinforcement part of a doorplate.

Preferably, the fitting means may be provided on the slider so as to be connected to the slider.
According to this aspect, by providing the fitting means on the slider, it can be configured with standard parts with a simple structure, and an increase in parts cost can be reduced.

Preferably, the fitting means may be provided in the operating portion of the lock means so as to pass through the slider.
According to this aspect, when locking, the fitting means can be locked with a simple structure by way of the slider, and the number of parts can be reduced.

Preferably, when the door is not locked, there may be provided elastic means for maintaining the fitting means in a state where it is not fitted to the recess.
According to this aspect, by having the elastic means, it is possible to avoid a situation of locking at normal time.

  With the cabinet door locking mechanism of the present invention, the keyhole can be at the end of the door plate, the locking stress can be received by the reinforcing portion of the door plate, it can be configured with standard parts with a simple structure, and the part cost Can be reduced.

It is the figure which showed the state (state expanded as a door simple substance) which attached the cabinet door which concerns on the 1st Embodiment of this invention to the cabinet, (a) is a front view, (b) It is the perspective view which showed the case where it sees from the diagonally upper right of the front side. It is the perspective view which showed the case where the cabinet door of the closed state of FIG. 1 was seen from diagonally upward on the back side. It is sectional drawing which showed the case where the AA line cross section and the cabinet part of the periphery in the cabinet door of FIG. 2 are seen from the upper side. FIG. 3 is a front view showing an open state of the cabinet door of FIG. 2 (a contracted state as a single door). (A)-(d) is the figure which expanded and showed the key part periphery of the cabinet door of FIGS. 1-4, (a) is front perspective drawing of a locked state, (b) is a locked state. It is sectional drawing, (c) Front perspective drawing of an unlocked state, (d) It is sectional drawing of an unlocked state. (A)-(f) is a figure of the sliding unit of FIG. 5, (a) is a perspective view of an unlocked state, (b) is a perspective view of a locked state, (c) is a front view of an unlocked state. (D) is a front view in a locked state, (e) is a side view in an unlocked state, and (f) is a side view in a locked state. It is sectional drawing which expanded and showed the sliding unit of FIG.5 (b).

<Embodiment>
Embodiments of the cabinet door locking mechanism of the present invention will be described in detail with reference to the drawings.
First, a schematic configuration of the cabinet door locking mechanism of the present embodiment will be described with reference to FIGS. The state in which the cabinet door of FIG. 1A is attached to the cabinet and closed is a state in which the door is closed by reducing the overlapping portions of the door plates and expanding the door.

  The cabinet 1 is a substantially rectangular parallelepiped having a front side opening portion that is surrounded by a flat left side surface portion, a right side surface portion, an upper surface portion, a lower surface portion, and a back surface portion, and whose front (front) side is opened in a substantially rectangular shape. It is the shape. The door 10 is attached to the front opening of the cabinet 1 and can open and close the front opening. When the door 10 is a door that opens and closes by sliding a door plate as in the present embodiment, the door 10 is either in a state where the front opening is completely closed, or a state where a part is open and a part is closed. Can be crab.

  The door 10 of the present embodiment is formed of, for example, a metal plate such as an iron plate that has been subjected to rust prevention plating or painting. The door 10 includes three sliding door plates 20, 40, 60. Reinforcing portions 21, 41, and 61 that are improved in strength against deformation of the metal plate by being bent are provided on the four sides of the upper, lower, left, and right sides of each of the plurality of door plates 20, 40, and 60.

  In this embodiment, since there are three door plates 20, 40, 60, each door plate 20, 40, 60 has a value close to an equivalent dimension of approximately 1/3 of the cabinet 1 in the left-right direction. In this case, in the sliding door type, it is possible to make the opening 7 of the maximum size without waste in the space of the opening when the door 10 is opened. Moreover, when each door board is made into 4 or more, the space of the opening 7 when the door 10 is opened can be further expanded.

  Guide grooves that allow the connecting projections 111 and 121 to move in the longitudinal direction of the reinforcing portions 21 and 41 are formed in the reinforcing portions 21 and 41 of the door plates 20 and 40 on the inner surface of the cabinet by metal processing. 36 and 56 are formed along the longitudinal direction. A bearing hole for a support shaft portion is formed on the surface of the reinforcing portion 61 of the door plate 60 by metal processing.

  The link function unit 100 includes a support screw 131 and a nut 132 constituting the support shaft part, a slide unit 160 serving as a connection protrusion, a support shaft part 111, a roller 120, and a support shaft part 121. And the guide grooves 36 and 56 of the reinforcing portions 21 and 41 and the bearing hole 65 of the reinforcing portion 61.

  The link bar 101 includes a slide unit 160 serving as a connecting projection and a support hole 102 to which the support 111 is attached, a support hole 103 to which the roller 120 and the support 121 are attached, and the link bar 101. Has a bar support shaft portion hole 104 to which a support shaft portion 130 to be a shaft for rotating the shaft is attached. The connecting protrusion 111 of the link bar 101 is provided with a sliding unit 160 that can move in the guide groove 36, and the connecting protrusion 121 of the link bar 101 has a roller 120 that can move in the guide groove 56. Is provided. Note that the connecting projection 121 may be provided with sliding means similar to a slider 161 described later, instead of the roller 120.

  In the reinforcement part 21, the guide groove 36 provided in the surface which becomes an inner side of a cabinet, the sliding unit 160 used as the connection projection part for opening and closing the door plates 20, 40, 60, and the spindle part 111 are comprised. Connected. In the reinforcing portion 41, the guide groove 56 provided on the inner surface of the cabinet is connected to the roller 120 and the support shaft portion 121 that serve as connection projections for opening and closing the door plates 20, 40, 60 in an interlocking manner. Is done. In the reinforcing part 61, a bearing hole 65 for a spindle provided on the inner surface of the cabinet and a spindle screw 131 serving as a spindle for opening and closing each door plate 20, 40, 60 in conjunction with each other. Are connected by a nut 132. Thus, each reinforcement part 21,41,61 is connected by the link bar 101 in the surface which becomes an inner side of a cabinet.

  The height of the guide grooves 36 and 56 is set individually for each door plate 20, 40, 60 according to the height position of the connecting portions 111, 121, 131 with the link bar 101. The formation distance of the guide hole portions 25 and 45 is set according to the movement range of the connection portions 111, 121, and 131.

  In addition, regarding the relationship between the guide groove 36, the guide hole portion 25, and the sliding unit insertion hole portion 26, the guide groove 36 is one side end reinforcing portion 21 of the door plate 20 as shown in FIGS. 2 and 3. Inside, the sliding unit 160 is provided with a width slightly larger than the diameter of the sliding unit 160 so as to be movable without stress. The guide groove 56 has a width slightly larger than the diameter of the roller 120 and is provided so that the roller 120 can move without stress.

  Hereinafter, since it becomes complicated to individually describe the reinforcing portion 21 of the door plate 20, the reinforcing portion 41 of the door plate 40, and the reinforcing portion 61 of the door plate 60, the same contents will be described only for the reinforcing portion 21 of the door plate 20. The positive reinforcing portions of the door plate 40 and the door plate 60 will be replaced.

  In the reinforcing portion 21, bending is performed a plurality of times to form a plurality of bent portions and a plurality of reinforcing planes. In this embodiment, each reinforcing plane closest to the end is in an unfixed state with respect to the original metal plate of the door plate.

  Further, as shown in FIG. 3, the reinforcing portion 21 has at least a cross-sectional box shape in which the metal plate is bent three or more times and at least three of the reinforcing planes are formed by a plurality of bending. doing.

  Next, the locking mechanism of the present embodiment will be described with reference to FIGS. The lock mechanism of the present embodiment generally includes a sliding unit 160 provided on the connection projection 111 at the end of the link bar 101, and a door key means 150 attached to the lower part of the handle 81 of the first door plate. Consists of

  The lock mechanism of the present embodiment is a lock mechanism of the door 10 that opens and closes in synchronization with each other by connecting three or more sliding door type door plates 20, 40, 60 made of metal thin plates with a link bar 101, and a reinforcing portion. The slider 161 at the movable end of the link bar 101 provided on the inner surface of the link bar 101 is fixed on the rail 38 by using the fitting means 162. Therefore, the lock mechanism has a recess 39 for fixing the fitting means 162 on the rails 38 on both sides of the guide hole 25 on the inner surface of the reinforcing portion 21. Further, the recess 39 is provided at the lock position of the slider 161. Further, the inner surface of the fitting means 162 reinforcing portion 21 of the slider 161 has a strength necessary for fixing the slider 161 by the lock mechanism.

  In the metal processing performed on the inner surface of the cabinet, the processing for the guide hole portion 25 of the guide groove 36 is punching processing, and the processing for the bearing hole 65 for the support shaft portion 130 is punching processing. The connecting projections 111 and 121 of the link bar 101 or the sliding unit 160120 are inserted into the guide holes 25 of the punched guide grooves 36 and 56 through the sliding unit insertion holes 26. The support shaft portion 130 of the link bar 101 is rotatably fixed to the bored bearing hole 65.

  The recess 39 is formed on the rail 38 on which the link bar 101 slides, at the stop position of the slider 161 in the closed state of the door 10 or in the vicinity thereof.

  The lock means 150 includes a key arm portion 151 and a key pressing portion 152 as operation portions when the key is inserted into the keyhole and turned. When the key is turned, the key arm portion 151 is linearly extended in the direction of the fitting means 162, and the key pressing portion 152 at the tip presses the contact portion 172. Then, the protruding portion 173 formed integrally with the contact portion 172 is pressed while compressing the elastic means 163 and finally inserted into the concave portion 39 provided on the rail 38.

  The key pressing portion 152 operates substantially linearly with respect to the fitting means 162 and operates to fit the fitting means 162 into the recess 39 when the door 10 is locked. Note that the key pressing portion 152 operates in a substantially arc shape with the shaft of the locking means 150 as the center with respect to the fitting means 162 if the protruding portion 173 can be inserted into the concave portion 39 finally provided in the rail 38. You may do it.

  In the punching process of the guide grooves 36 and 56 performed on the inner surface of the cabinet, an opening (sliding) larger than the outer dimension of the unit into which the sliding unit 160 can be inserted at the uppermost part of the guide grooves 36 and 56. Unit insertion hole 26) is provided, and only the main part of the slider 161 inside the lead part 175 of the slider 161 is movable at the lower part of the large opening (sliding unit insertion hole 26). A guide hole 25 of the guide groove 36 is formed in the width. Both sides of the guide hole 25 serve as a rail 38 that slides on the sliding unit 160.

  The slider 161 is a part of the sliding unit 160 and is attached to the end of the link bar 101 that slides. That is, the slider 161 is formed in the reinforcing portion 21 along the rail 38 provided in a slit shape on the side end reinforcing portion 21 formed by bending the end portion of the thin metal plate in the door plate 20 at the end portion of the door 10. At the end of the link bar 101, the connecting protrusion 111 is attached to the connecting portion of the link bar 101 to the rail 38. Further, the slider 161 is inserted from the sliding unit insertion hole 26 so as to sandwich the rails 38 on both sides of the guide hole 25 in the gaps in the thickness direction of the plurality of lead portions 175.

  The fitting means 162 is provided to be detachable with respect to the recess 39 via the slider 161. The fitting means 162 is connected to the slider 161 on the slider 161 and is provided so as to operate substantially linearly in a direction substantially orthogonal to the rail 38 surface of the recess 39. The fitting means 162 has a tapered portion that guides the key pressing portion 152 of the locking means 150 to a position where the fitting means 162 is fitted.

  Note that the fitting means 162 of the present embodiment is not limited to the illustrated embodiment, and, for example, operates in a substantially arcuate direction about the rotation axis in a direction substantially orthogonal to the rail 38 surface of the recess 39. It may be provided. Further, the fitting means 162 may be provided in the operating portion of the lock means 150 as long as the fitting means 162 is fitted via the slider 161.

  The elastic means 163 is, for example, a spring, and when the door 10 is not locked, the fitting means 162 is urged in a direction in which the fitting means 162 is not fitted to the recess 39 to maintain the non-fitted state.

  Thus, in this embodiment, the movement of the link bar becomes smooth by moving the sliding unit 160 in the guide groove 36, and as a result, each door plate can be opened and closed smoothly. In the present embodiment, the sliding unit 160 can be easily installed in the guide groove 36, and the sliding unit 160 can be easily moved.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

1 cabinet,
10 door 20 (outermost) first door panel,
21 side end reinforcement (of the first side end of the first door plate),
25 Guide hole (of the reinforcing part of the first side end of the first door plate),
26 sliding unit insertion hole (of the reinforcing part at the first side end of the first door plate),
27 first side end (of first doorboard),
36 guide groove part (of the first door plate) 38 rail (at both ends of the guide groove part),
39 Recessed part (of rail),
40 (intermediate) second door plate 41 (on the first side edge of the second door plate) side end reinforcement,
45 Guide hole (of the reinforcing part of the first side end of the second door plate),
46 Roller insertion hole (of the reinforcing part of the first side end of the second door plate),
47 first side end (of second doorboard),
56 guide groove portion (of the second door plate) 60 (innermost side) third door plate 61 (of the first side end portion of the third door plate) side end reinforcing portion,
65 A bearing hole for a support shaft part (of the reinforcing part at the first side end of the third door plate),
67 first side end (of third doorboard),
81 (for first doorboard) handle,
82 (for third doorboard) handle,
91 Cabinet side door support,
100 link function section,
101 link bar,
102 support shaft hole 103 support shaft hole 104 support shaft hole 111 support shaft portion (of the first door plate roller),
120 Roller 121 (supporting shaft of second door plate roller),
130 spindle,
131 spindle screw,
132 nuts,
135 support fixture,
150 key means,
151 key arm,
152 key pressing part,
160 sliding unit,
161 slider,
162 fitting means,
163 elastic means,
171 rotation axis,
172 contact portion,
173 protrusion,
175 Lead part.

Claims (4)

A door locking mechanism that opens and closes in synchronization with each other by connecting three or more sliding door type door plates made of thin metal plates with a link bar,
A slider attached to the sliding end of the link bar;
A recess formed in the vicinity of the stop position of the slider in the closed state of the door on the rail on which the link bar slides;
A fitting means that is detachable from the concave portion via the slider;
And a locking mechanism that operates to fit the fitting means into the recess when the door is locked. The lock mechanism according to claim 1, wherein the fitting means is provided on the slider so as to be connected to the slider. The lock mechanism according to claim 1, wherein the fitting means is provided in an operating portion of the lock means so as to pass through the slider. The lock mechanism according to any one of claims 1 to 3, further comprising elastic means for maintaining the fitting means in a state of not being fitted to the recess when the door is not locked.

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