JPS582843Y2 - Furniture locking device - Google Patents

Description

[Detailed Description of the Invention] The present invention aims to provide a new type of furniture locking device to replace the conventional so-called gun lock.

An embodiment of the present invention will be described below based on illustrative drawings.
Reference numeral 1 designates an L-shaped board, and reference numeral 2 designates a locking plate that fits between a pair of guides 3 provided on the board 1 and moves in the direction of movement in and out of a through hole 4 provided in the front surface of the board 1. It is.

Reference numeral 5 denotes a rotary operation piece rotatably fitted and supported by a shaft 6 erected on the base plate 1, and is rotated by a cylindrical key 7 inserted into the shaft 6 concentrically.

Reference numeral 8 denotes an engagement recess provided in the locking plate 2, and the rotary operation piece 5
is engaged.

Reference numeral 9 denotes a surface that prevents reverse operation rotation of the rotary operation piece 5, and is provided on the locking plate 2.

Reference numeral 11 denotes a locking plate movement blocking piece, which is constituted by a portion of a leaf spring 15 that is locked by a pin 12.13 provided upright on the base plate 1 and biased in a direction 14 toward the locking plate 2. There is.

The portion of the iron plate spring 15 on the free end side of the locking plate movement prevention piece 11 makes a U-turn above the locking plate 2 and is a driven portion that is pushed by the rotary operation piece 5 in a direction 16 opposite to the biasing direction 14. 17, the free end of which is bent such that the free end 18 faces near the base of the active part of the leaf spring 15.

Reference numeral 19 denotes a first engaged portion with which the locking plate movement prevention piece 11 engages when the locking plate 2 is at the backward limit position as shown in FIG. is a second engaged portion with which the locking plate movement blocking piece 11 engages when the locking plate is at the forward limit position as shown in FIG. 3, and both are provided on the locking plate 2.

In the unlocked state shown in FIG. (direction).

Movement in the opposite direction is also prevented, but since the stopper 2H provided on the guide 3 is in contact with the locking plate 2,
It has no real effect.

In this state, when the rotary operation piece 5 is rotated counterclockwise in the figure with the key 7, the rotation operation piece 5 engages the engagement recess 8.
Since the driven part 17 of the leaf spring 15 is pushed in the anti-biasing direction 16 before engaging with the leaf spring 15, the free end 18 of the leaf spring presses the vicinity of the base of the leaf spring operating part in the anti-biasing direction. , leaf spring 1
5 moves in the counter-biasing direction 16 as shown by the imaginary line, and the locking plate movement prevention piece 11, which is a part thereof, moves in the first engaged portion 19.
escape from

Subsequently, the rotary operation piece 5 engages with the engagement recess 8 and presses one side thereof, thereby advancing the locking plate 2 in the locking direction.

When the locking plate 2 reaches the forward limit position where it comes into contact with the back surface 22 of the front part of the board 1, the rotary operation piece 5 escapes from the engagement recess 8 and is attached by elastic force as shown in FIG. As the leaf spring 15 returns to the spring direction 14, the locking plate blocking piece 11, which is a part thereof, automatically engages with the second engaged portion 20.

When the rotary operation piece 5 is rotated clockwise in the unlocked state shown in FIG. 1, the rotation operation piece 5 comes into contact with the blocking surface 9 of the locking plate 2, and the leaf spring 15 is moved in the counter-biasing direction 16.

There's nothing wrong. In the locked state shown in FIG. 3, the locking plate 2 is prevented from freely moving in the unlocking direction by the engagement between the locking plate movement blocking piece 11 and the second engaged portion 20.

When the rotary operation piece 5 is rotated in the clockwise direction in the figure in this state, the leaf spring 15 is moved in the counter-biasing direction 16 as shown by the imaginary line, similar to the locking operation described above, and the locking plate movement blocking piece is moved. 11 escapes from the second engaged portion 20.

Thereafter, the rotary operation piece 11 engages with the engagement recess 8 and presses the other 9 sides, thereby moving the locking plate 2 backward in the unlocking direction.

When the locking plate 2 reaches the backward limit position where it contacts the stopper 21, the rotary operation piece 11 escapes from the engagement recess 8, and the plate returns to the biasing direction 14 by elastic force as shown in FIG. Due to the spring 15, a portion of the locking plate blocking piece 11 automatically engages with the first engaged portion 19.

Note that it is not necessary to completely remove the lock plate movement prevention piece 11 from the first engaged part 19 or the second engaged part 20 before the rotation operation piece 5 engages with the engagement recess 8. do not have.

Due to the deformation of the leaf spring 15 in the opposite biasing direction 16 due to the rotation of the rotary operation piece 5 after it has engaged with the engaging part 8, the locking plate movement prevention piece 11 is further moved into the engaged part 19. .20 so that the engaged portion 19.2 is moved in the direction of escape from the engaged portion 19.2.
0 and the locking plate movement blocking piece 11 may be prevented from being forced together.

Also, due to the movement of the locking plate 2Q, the engaged portions 19, 20
It may be configured so that the locking plate movement prevention piece 11 is pushed out.

Conventional gun locks have a ttC configuration in which a locking plate is held in a locked position and an unlocked position by a spring force, and the locking plate is moved by a one-turn operation piece against this spring force.

Therefore, in order to reliably prevent the locking plate from moving, a strong spring is required, and as a result, a strong operating force is required.

However, according to the configuration of the present invention, the floating movement of the locking plate can be reliably prevented by the engagement between the locking plate movement prevention piece and the engaged portion, and therefore, there is no need for a spring that directly biases the locking plate. Since the spring reaction force acting as a load when operating the rotary operation piece is only the spring force that urges the locking plate movement prevention piece in the locking direction, locking and unlocking operations are extremely light and easy to perform. .

Further, according to the configuration of the present invention, a locking member is provided at the intermediate portion of the leaf spring 15 whose one end is fixed, and which engages with the engaged portion 19.20 provided on the locking plate 2 by the biasing force of the leaf spring 15 itself. A stop plate movement blocking piece 11 is provided, and furthermore, a driven portion 1T is provided on the free end side of the leaf spring 15 and is pressed by the rotary operation piece 5 during initial rotation to engage the engaged portion 19.20. is provided so that the locking plate movement prevention piece 11 moves in the direction of escape from the engaged parts 19 and 20 as the leaf spring 15 deforms when the driven part 17 is pressed by the rotary operation piece 5. Since it is configured as follows, the following effects can be obtained.

That is, when the locking plate movement blocking piece is urged by a separate leaf spring, a separate means is provided for moving the locking plate movement blocking piece in the unlocking direction by the initial rotation of the rotary operation piece 5. Even if this means could be constructed from one part, the number of parts would be very large, and the structure would be very complicated, resulting in an expensive locking device.

However, according to the configuration of the present invention as described above, the locking plate movement blocking piece 11 and the leaf spring 15 that biases it, and the means for interlocking the rotation operation piece 5 and the locking plate movement blocking piece 11 are provided. Since everything can be constructed from one part, that is, one leaf spring 15, the number of parts is very small and the construction can be made at extremely low cost.

Furthermore, the driven portion 17 of the leaf spring 15 biases the rotary operation piece 5 in the rotational direction during the latter half of the rotation of the rotary operation piece 5, that is, when the rotation operation piece 5 rotates in the direction of escape from the engagement recess 8. Therefore, smooth locking and unlocking operations can be obtained.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a partially longitudinal side view in an unlocked state, FIG. 2 is a rear view of the same, FIG. 3 is a partially longitudinal side view in a locked state, and FIG. The figure is a rear view of the same. 2... Locking plate, 3... Guide, 5...
... Rotating operation piece, 7 ... Cylindrical key, 8 ...
... Engagement recess, 11 ... Locking plate movement prevention piece, 15 ... Leaf spring, 17 ... Leaf spring driven part, 19 ...・First engaged part, 20...
...Second engaged part.

Claims (1)

[Scope of utility model registration request] A locking plate 2 supported by a guide so as to be freely retractable, a rotary operation piece 5 that engages with an engagement recess 8 provided in the locking plate 2 to move the locking plate 2 in and out, and one end fixed. flat spring 1
A locking plate movement prevention piece 11 is formed at the intermediate portion of the plate spring 5 and engages with the engaged portion 19.20 provided on the locking plate 2 by the biasing force of the plate spring 15 itself; A driven portion 17 is formed on the free end side and is pressed by the rotary operation piece 5 during initial rotation to engage the engaged portion 19.20, and the driven portion 17 is the rotation operation piece. As the leaf spring 15 is deformed by being pressed by
A furniture locking device configured to move in an escape direction from 9 and 20.