JP3835881B2 - Locking device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lock device that prevents protrusion of a drawer when a predetermined vibration due to an earthquake or the like is applied to various lockers, furniture, and the like provided with the drawer.
[0002]
[Prior art]
For example, there is a latch device disclosed in Japanese Utility Model Publication No. 53-25713 as a technique for preventing the drawer from moving in an unexpected protruding direction in various lockers, furniture, and the like provided with the drawer. In such a latch device, when a finger or the like is hooked on the pulling handle provided on the front surface of the drawer to pull the pulling handle, the latching device is hooked to the hooking protrusion provided on the drawer storage cabinet side. The engaging part on the drawer side can be moved in such a direction as to remove the hook. Unless the puller is operated, the drawer does not protrude from the cabinet due to the hook between the hooking protrusion and the hooking part.
[0003]
[Problems to be solved by the invention]
However, in such a conventional latch device, although it is possible to effectively prevent an unexpected protrusion of the drawer, the hooking portion is moved in a direction to remove the hook in accordance with the pulling operation of the puller. In addition, if this operation is not performed, a mechanism for causing the hooking portion to be hooked on the hooking protrusion again is required, and in order to prepare these mechanisms for the cabinet and the drawer, a special mechanism is required. It was necessary to give these cabinets a structure.
[0004]
Therefore, it is difficult to provide a locker, furniture or the like provided with such a latch device at a low cost, and has a simple structure, and further, this kind of mechanism that can be easily used for various lockers and furniture provided with a drawer is provided. It was desired.
[0005]
In particular, such an unexpected protrusion of the drawer may occur when a vibration exceeding the vibration during the drawer insertion / extraction operation is applied to the locker or the like due to an earthquake or the like. In other cases, it has been desired to provide a mechanism that allows the drawer to be taken in and out without requiring a special operation.
[0006]
Therefore, the present invention eliminates the disadvantages of the conventional technology, and in particular, has a simple structure and can be easily installed in a locker having various drawers, and is subjected to a predetermined vibration due to an earthquake or the like. It is an object of the present invention to provide a locking device that can effectively prevent an unexpected protrusion of a drawer in the event of a failure.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, the locking device includes the protrusion 10 provided on the side plate Ha of the drawer H and the side plate Ha of the drawer H in the storage portion K where the drawer H is put in and out. Is provided in a suspended manner on the surface Ka facing the surface Ka so as to be rotated by a predetermined vibration, and the hooking end 22 is hooked on the protrusion 10 by this rotation, and from the storage portion K due to the predetermined vibration. And a hook 20 that prevents movement of the drawer H in the protruding direction, the hook 20 being configured as a plate-like body, and the hook 20 from the rotation center 21 of the rotation. to dimension h1 to the center of gravity G of, Yes configured to dimension h2 from the rotation center 21 to the engaging end 22 increases, moreover, the drawer H is accommodating portion K In was placed was accommodated state, the projection 10 has assumed the configuration is provided so as to be located above between the engaging end 22 and the pivot shaft 21 of the hook 20 '.
[0008]
According to such a configuration, when a predetermined vibration due to an earthquake or the like that moves the drawer H in the protruding direction is applied, the hook 20 is rotated and the hooking end 22 of the hook 20 is moved to the protrusion 10. The hook can be hooked, and the protrusion of the drawer H can be prevented by the hook.
[0009]
In particular, the hook 20 is configured such that the dimension h2 from the rotation center 21 to the hooking end 22 is larger than the dimension h1 from the rotation center 21 to the center of gravity G of the hook 20. The moving dimension m2 of the engaging end 22 can be made larger than the moving dimension m1 of the center of gravity G when the predetermined vibration is applied. As a result, even when a sufficient space is provided between the protrusion 10 and the hooking end 22 of the hook 20 so that the protrusion 10 and the hook 20 do not interfere with each other when the drawer H is inserted and removed, the predetermined vibration is generated. It is possible to ensure that the hooking end 22 of the hook 20 is hooked on the protrusion 10 when the is operated.
[0010]
When the locking device according to the present invention is used for the purpose of preventing the pull-out H from protruding due to earthquake vibration, the magnitude of the predetermined vibration is greater than the vibration generated by the normal pull-out operation of the drawer H. As long as it is.
[0011]
By adjusting the weight of the hook 20, or by adjusting the ratio of the dimension h1 from the pivot center 21 to the center of gravity G of the hook 20 and the dimension H2 from the pivot center 21 to the engagement end 22; Alternatively, by adjusting the distance between the hooking end 22 of the hook 20 and the protrusion, the magnitude of a predetermined vibration necessary for the hooking end 22 of the hook 20 to be hooked on the protrusion 10 is adjusted. be able to.
[0013]
Further , according to such a configuration, the storage state of the drawer H retracted into the storage portion K, more specifically, generally the front surface Hb of the drawer H is substantially the same as the front surface Hb around the opening Kb of the storage portion K of the drawer H. In this state, when the predetermined vibration is applied, the hook 20 is hooked on the projection 10 by the rotation of the hook 20 to prevent the drawer H from protruding in this state. be able to.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, one of typical embodiments of the present invention will be described with reference to FIGS.
[0015]
Here, FIG. 1 shows, in order to facilitate understanding of the configuration of the locking device according to this embodiment, the drawer H to which the locking device is assembled, the main part of the storage portion K, and the members constituting the locking device. Are shown in a perspective state. FIG. 2 shows a perspective view of a state in which the drawer H is pulled out from the storage portion K in a state in which the lock device is assembled. FIG. 3 is a perspective view showing a state in which the hook 20 is hooked on the protrusion 10 constituting the locking device when a predetermined vibration is applied, thereby preventing the movement of the drawer H in the protruding direction. As shown. FIG. 4 shows the protrusion constituting the lock device in a state in which the drawer H is stored with the opening Kb of the storage portion K closed by the front plate Hc of the drawer H and the predetermined vibration is not applied. In order to facilitate understanding of the positional relationship between the hook 10 and the hook 20, the drawer H and the storage portion K are indicated by phantom lines, and the lock device is viewed from the side. Further, FIG. 5 shows that the drawer H and storage are easy to understand from the state shown in FIG. 4 so that the positional relationship between the protrusion 10 and the hook 20 constituting the locking device in a state where the predetermined vibration is applied. The portion K is indicated by a virtual line, and the lock device is shown as viewed from the side.
[0016]
The locking device according to this embodiment is rotated by a predetermined vibration on the protrusion 10 provided on the side plate Ha along the direction in which the drawer H is put in and out, and the inner side surface Ka ′ of the storage portion K facing the side plate Ha of the drawer H. It is mainly composed of a hook 20 that is movably provided.
[0017]
In this embodiment, the hook 20 is provided with a vertical portion 23 provided on one end side with a shaft hole 23a through which a rotating shaft 21 'is erected on the inner side surface Ka' of the storage portion K. And an arm portion 24 integrally provided on the other end side so as to extend in the lateral direction from the other end side on the other end side of the vertical portion 23.
[0018]
The arm part 24 is configured to be thinner than the vertical part 23. In this embodiment, the center of gravity G of the hook 20 is positioned on the other end side of the vertical portion 23. Further, the arm portion 24 protrudes in a direction substantially orthogonal to a line segment L connecting the center of gravity G and the rotation shaft 21 '. When the predetermined vibration is not applied, the arm portion 24 is positioned substantially along the horizontal direction.
[0019]
A hooking end 22 for the protrusion 10 is formed at the tip of the arm portion 24. In this embodiment, the hooking end 22 is configured by forming a protruding portion 22 a directed upward at the free end of the arm portion 24. The dimension h2 from the tip of the protrusion 22a constituting the engaging end 22 to the rotating shaft 21 ′ is configured to be larger than the dimension h1 from the rotating shaft 21 ′ to the center of gravity G. When the center of gravity G moves by a predetermined dimension m1 as the arm portion 24 is rotated by the predetermined vibration, the engagement end 22 is moved by a dimension m2 that is not less than the movement dimension m1 of the center of gravity G. It is configured to move upward.
[0020]
More specifically, the hook 20 is provided on a head portion 25a having an outer diameter larger than that of the shaft hole 23a, an intermediate portion 25b that fits in the shaft hole 23a, and an inner side surface Ka ′ of the storage portion K. A shaft member 25 having a front end portion 25c having a male screw fixed to the screw hole 26 is provided by screwing the front end portion 25c into the screw hole 26 via a washer 25d, and the intermediate portion 25b is The hook 20 is rotatably mounted on the shaft member 25 so as to be accommodated in the shaft hole 23a and is assembled so as to be suspended by the shaft member 25, and is provided on the inner side surface Ka ′ of the storage portion K.
[0021]
In this embodiment, the hook 20 having the above configuration is attached to the inner side surface Ka ′ of the storage portion K on the opening Kb side of the storage portion K of the drawer H in the storage portion K. The engagement end 22 of the portion 24 is provided so as to face the opening Kb. Further, the surface of the hook 20 on the side facing the surface of the side plate Ha of the drawer H and the head portion 25a of the shaft member 25 are in contact with the surface of the side plate Ha of the drawer H when the drawer H is inserted and removed. Thus, the drawer H is positioned so as not to hinder the operation of inserting and removing the drawer H.
[0022]
Next, the protrusion 10 is provided so as to protrude toward the inner side surface Ka ′, and is configured such that the protrusion 10 does not interfere with the inner side surface Ka ′ of the storage portion K when the drawer H is inserted and removed. It is.
[0023]
Further, the projection 10 is formed on the front surface Hb side of the drawer H, and in this embodiment, before the opening Kb of the storage section K of the storage section K is closed at the storage position of the drawer H with respect to the storage section K. Provided on the side surface of the drawer H in the vicinity of the plate Hc, and at the storage position of the drawer H, the projection 10 is located between the pivot shaft 21 ′ and the engagement end 22 of the hook 20. And when the arm portion 24 of the hook 20 is turned upward, the hook portion 20 is provided so as to be positioned in the movement locus of the tip of the protrusion 22a constituting the engagement end 22. .
[0024]
More specifically, the protrusion 10 includes a head 11a, an intermediate portion 11b following the head 11a, and a tip provided with a male screw that is fastened to a screw hole 12 provided in the inner surface Ka ′ of the drawer H. A protrusion structure 11 having a portion 11 c is provided on the side plate Ha of the drawer H by screwing the tip end portion 11 c into the screw hole 12.
[0025]
Since the locking device according to this embodiment has the above-described configuration, a predetermined vibration is applied to move the drawer H stored in the storage position in the storage unit K in a direction protruding from the storage unit K. The hook 20 can be rotated so that the hooking end 22 of the arm of the hook 20 is moved upward, and the hooking end 22 of the arm thus rotated is It can be hooked on the protrusion 10. Thereby, the movement of the drawer H in the protruding direction can be prevented. (Fig. 3, Fig. 5)
[0026]
【The invention's effect】
According to the locking device of the present invention, when a predetermined vibration is applied due to an earthquake or the like that moves the drawer H in the protruding direction, the hook 20 is rotated, and the hooking end 22 of the hook 20 is moved. The protrusion 10 can be hooked, and the protrusion of the drawer H can be prevented by this hook.
[0027]
In particular, the hook 20 is configured such that the dimension h2 from the rotation center 21 to the hooking end 22 is larger than the dimension h1 from the rotation center 21 to the center of gravity G of the hook 20. The moving dimension m2 of the engaging end 22 can be made larger than the moving dimension m1 of the center of gravity G when the predetermined vibration is applied. As a result, even when a sufficient space is provided between the protrusion 10 and the hooking end 22 of the hook 20 so that the protrusion 10 and the hook 20 do not interfere with each other when the drawer H is inserted and removed, the predetermined vibration is generated. It is possible to ensure that the hooking end 22 of the hook 20 is hooked on the protrusion 10 when the is operated.
[0028]
In addition, since the locking device is constituted by the protrusion 10 and the hook 20, the structure is simple and can be provided at low cost, and the drawer H and the storage section K for the drawer H with respect to various drawers H can be provided. It has the feature that it can be easily installed without paying special consideration to the structure.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a locking device. FIG. 2 is a perspective view showing a usage state of the locking device. FIG. 3 is a perspective view showing a usage state of the locking device (locked state).
FIG. 4 is a side view showing the usage state of the locking device. FIG. 5 is a side view showing the usage state of the locking device (locked state).
[Explanation of symbols]
H Drawer Ha Side plate K Storage portion Ka Face G facing side plate Ha Center of gravity 10 Projection 20 Hook 21 Rotation center 22 Engagement end h1 Dimension from rotation center 21 to center of gravity G of hook 20 h2 From rotation center 21 to engagement end 22 Dimensions

Claims (1)

A protrusion provided on the side plate of the drawer and a surface facing the side plate of the drawer in the storage portion in which the drawer is put in and out are provided in a suspended form so as to be rotated by a predetermined vibration. A locking device comprising a hook that hooks a hooking end on the protrusion to prevent movement of the drawer from the storage portion in the protruding direction due to the predetermined vibration,
The hook is configured as a plate-like body, and is configured such that the dimension from the pivot center to the hooking end is larger than the dimension from the pivot center of the pivot to the center of gravity of the hook. Yes,
In addition, the locking device is characterized in that the protrusion is positioned above the hook engaging end and the rotating shaft in the storage state in which the drawer is pushed into the storage portion .

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