JP2004124457A - Lock device for desk - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock device for a desk capable of facilitating the insertion of a key into a key insertion hole of a lock. <P>SOLUTION: This desk having a drawer is formed with a key insertion part 6 of the lock 5 locking the drawer at the lower part of a desk top plate 2, and the key insertion part 6 has the key insertion hole 7 in its center. A face around the key insertion hole 7 is formed into a key guide face 8 inclined downward toward the key insertion hole 7. The tip of the key 14 is guided and inserted into the key insertion hole 7 by the key guide face 8 by abutting and pressing the tip of the key 14 on the key insertion part 6. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a desk with a drawer, and more particularly to a desk lock device that facilitates applying and unlocking operations of a lock for a drawer lock.
[0002]
[Prior art]
Conventionally, a drawer of a desk can be locked by a lock.
[0003]
The lock for drawer is usually provided on the front plate of the drawer, and the lock is applied and unlocked by inserting a key into a key insertion hole of the lock and rotating the lock.
[0004]
[Problems to be solved by the invention]
However, in conventional drawer locks, the key insertion hole is located in the same plane as the front plate of the drawer, so it is unexpectedly troublesome to insert the key tip accurately into the key insertion hole, especially for visually impaired persons. Was difficult to apply and unlock.
[0005]
There is no literature yet that attempts to improve this by focusing on such points.
[0006]
In view of this, it is an object of the present invention to provide a desk lock device that facilitates insertion of a key into a key insertion hole of a lock. However, it is an object of the present invention to be able to immediately grasp the location of the lock and to perform quick application and unlocking.
[0007]
[Means for Solving the Problems]
As means for solving the above-mentioned problems, the invention according to claim 1 provides a desk having a drawer, wherein a key insertion portion of a lock for locking the drawer is provided at a lower position of the desk top plate, and the key insertion portion is located at the center thereof. The key insertion hole has a key insertion surface, and a surface around the key insertion hole is formed on a key guiding surface that is inclined downward toward the key insertion hole, and the tip of the key is pressed against the key insertion portion. The tip of the key is guided and inserted into the key insertion hole by the key guiding surface.
[0008]
As a result, when the key is inserted into the key insertion hole at the time of applying / unlocking the drawer, the tip of the key is pressed against the front of the key insertion part. Therefore, the key can be easily inserted into the key insertion hole.
[0009]
The invention according to claim 2 is characterized in that a concave groove extending in the lateral direction is formed in the front surface of the desk between the front edge of the desk top plate and the upper edge of the front plate of the drawer, and the key insertion portion is formed in the concave groove. The key insertion portion is provided so as to project forward, and the front end of the key insertion portion is substantially flush with the front edge of the desk top plate and the front plate of the drawer.
[0010]
In this way, even a visually impaired person can immediately grasp the presence of the concave groove, and if the finger is moved along the concave groove, the presence of the key insertion part can be recognized. It is possible to quickly perform the application / unlocking operation in combination with the easiness of the operation.
[0011]
According to a third aspect of the present invention, the most preferable mode is specified. The key insertion portion is integrally protruded from a vertical surface of a frame having a U-shaped cross section, and the frame is pulled out of a desk. Positioned between the desk top plate fixed to the upper end of the frame and the upper edge of the front plate of the drawer and fixed to the drawer frame, the vertical surface of the frame body constitutes the inner bottom surface of the concave groove portion. I did it.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described with reference to embodiments shown in the drawings.
[0013]
FIG. 1 is a front view of an embodiment in which the present invention is applied to a one-sleeved desk 1, and FIG. 2 is an enlarged perspective view of the main part.
[0014]
A recessed groove 4 extending in the lateral direction is formed between the front edge 2a of the top plate 2 of the desk 1 and the upper edge of the front plate 3a of the uppermost drawer 3, and the recessed groove 4 is located closer to the end (desk 1). Is provided with a key insertion portion 6 of a lock 5 for pull-out lock.
[0015]
The key insertion portion 6 has a horizontally long elliptical shape as viewed from the front, and is provided so as to protrude from a vertical inner bottom surface 4a of the concave groove portion 4. The front end thereof is a front edge 2a of the top plate 2 and a front plate 3a of the drawer 3. Is formed so as to be substantially the same as the front surface.
[0016]
As shown in the horizontal section in FIG. 3A and the vertical section in FIG. 3B, the key insertion portion 6 has the key insertion hole 7 of the lock 5 facing the center position when viewed from the front. The surface around the key insertion hole 7 is a key guiding surface 8 that is inclined downward toward the center key insertion hole 7. The key guiding surface 8 may be formed as a flat surface, but is preferably formed as a concave curved surface as shown in FIG.
[0017]
As a specific structure example, as shown in an exploded view in FIG. 4, there is a mounting surface 10 of the top plate 2 at an upper end of the drawer frame 9 of the desk 1, and a mounting seat 11 of the lock 5 is provided below the mounting surface 10. A lock support member 12 for screwing is provided, and a drawer is set in a lower portion of the lock support member 12.
[0018]
On the front surface of the lock support member 12, a resin frame 13 having a U-shaped cross section integrally formed with the key insertion portion 6 is configured to be screwed by a mounting seat 14 thereof. Therefore, the vertical surface 13a of the frame 13 constitutes the inner bottom surface 4a of the concave groove 4.
[0019]
The configuration of the lock 5 itself is the same as that generally used in the related art, and as shown in FIGS. 5A and 5B, the key 14 is inserted into the key insertion hole 7 of the lock 5 and FIG. When the rod 15 is rotated in the direction indicated by the arrow A), the rod 15 rotates in the direction indicated by the arrow, and the lock rod 16 is pulled up by the crank portion 15a of the rod 15, and the lock piece 17 of the lock rod 16 is pulled out. When the drawer 3 is unlocked by being disengaged upward from an engaging portion (not shown), and the key 14 is rotated in the direction of the arrow in FIG. 5B, the rod 15 rotates in the direction of the arrow to lock. The rod 16 is lowered, and the lock piece 17 is engaged with the engaging portion of the drawer 3 so that the drawer 3 is locked.
[0020]
If the lock rod 16 is provided with lock pieces 16 for the upper, middle, and lower drawers 3, 3, 3, all the drawers can be simultaneously applied and unlocked. In the drawing, reference numeral 18 denotes a drawer rail.
[0021]
Therefore, when applying and unlocking the drawer 3, the tip of the key 14 is pressed against the front surface of the key insertion portion 6 and pressed into the key insertion hole 7 in the central portion by the key guiding surface 8. The key 14 is guided naturally, and the key 14 can be inserted without reaching the key insertion hole 7 and searching for the key insertion hole 7.
[0022]
By rotating the key 14 in the unlocking direction, the drawer 3 can be unlocked and pulled out, and by rotating the key 14 in the locking direction, the drawer 3 can be locked.
[0023]
【The invention's effect】
As described above, according to the present invention, when a key is inserted into the key insertion hole for withdrawing / unlocking, the key tip is automatically pressed by pressing the key tip against the front surface of the key insertion portion. Guided to the insertion hole, the key can be quickly inserted into the key insertion hole even by hand, making it extremely easy to apply and release the key, especially for people with visual impairments. However, the applying and unlocking operations can be performed quickly and reliably.
[0024]
Further, if the key insertion portion is provided so as to protrude from the inner bottom surface of the concave groove portion at the lower portion of the top plate, even if the visually impaired person follows the concave groove portion, the presence of the key insert portion will not occur. The position of the key insertion portion can be quickly found, and the key operation can be easily performed in combination with the key guiding operation.
[0025]
According to the third aspect, there is an advantage that the formation of the recessed groove portion on the desk and the formation of the key insertion portion can be facilitated and provided at a low cost.
[Brief description of the drawings]
FIG. 1 is a front view showing an example of a desk to which the present invention is applied.
FIG. 2 is an enlarged perspective view showing a main part of FIG. 1;
3A and 3B show a key insertion portion in FIGS. 1 and 2, wherein FIG. 3A is a horizontal sectional view and FIG. 3B is a vertical sectional view.
FIG. 4 is an exploded perspective view showing a specific configuration example.
5A and 5B are perspective views showing an example of the locking / unlocking mechanism, wherein FIG. 5A shows a situation at the time of unlocking, and FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Desk 2 Top plate 3 Drawer 4 Recessed groove 4a Inner bottom surface 5 Lock 6 Key insertion part 7 Key insertion hole 8 Key guide surface 9 Drawer frame 12 Lock support member 13 Frame body 14 Key 15 Rod 16 Lock rod 17 Lock piece

Claims (3)

In a desk having a drawer, a key insertion portion of a lock for locking the drawer is provided at a lower position of the desk top plate, and the key insertion portion has a key insertion hole in a central portion thereof, and a surface around the key insertion hole. Is formed on a key guide surface that is inclined downward toward the key insertion hole, and a key tip is guided to the key insertion hole by the key guide surface by abutting and pressing the tip of the key against the key insertion portion. A lock device for a desk, characterized in that it is inserted by being inserted. A recessed groove extending in the lateral direction is formed on the front surface of the desk between the front edge of the desk top plate and the upper edge of the front plate of the drawer. 2. The desk lock device according to claim 1, wherein the front end of the key insertion portion is arranged substantially flush with the front edge of the desk top plate and the front plate of the drawer. The key insertion portion is integrally protruded from a vertical surface of a frame having a U-shaped cross section, and the frame is attached to a desk top plate fixed to an upper end of a desk drawer frame and an upper edge of a front plate of the drawer. 3. The desk lock device according to claim 2, wherein the frame is fixed to the drawer frame and the vertical surface of the frame forms an inner bottom surface of the recessed groove.

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