JPH0746193Y2 - Push-button locking device - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention has a push button
Lock the lock plate by pushing the lock rod.
Push-button locking device that enables movement and movement
Regarding the table

[0002]

2. Description of the Related Art A lock plate in which a large diameter hole is formed in a part of a narrow narrow guide hole on a base, and a lock plate which can move in a direction orthogonal to the lock plate and has a diameter slightly smaller than the width of the guide hole. A lock in which a small diameter shaft and a large diameter shaft having a diameter larger than the width of the guide hole but slightly smaller than the large diameter hole are continuously provided.
A rod , a push button locked to the lock rod, and an urging means for urging the lock rod in its axial direction are provided, and by pushing the push button, the small-diameter shaft or the large-diameter shaft of the lock rod can be
2. Description of the Related Art A push button type locking device is known in which a lock plate can be moved along the guide hole or locked by facing a guide hole or a large diameter hole in the lock plate.

FIGS. 5 and 6 show synthetic trees such as polypropylene.
Conventional push button with a push button (03) molded from grease
FIG.

A metal cover covering the essential parts of the base (04)
A fitting hole (05) is opened on the upper surface of the bar (01), and the fitting hole (05) is
Is a flexible downward step connected from the periphery of the push button (03).
The lower end of the cylindrical body (07) is fitted. Below the stepped body (07)
An outward flange (06) is projected slightly above the edge,
Attach the outward flange (06) to the adhesive polymerized around the fitting hole (05).
It is more fixed.

At the center of the lower surface of the push button (03),
A recess (08) is provided in which the upper end of the lock rod (02) is fitted.
It is included.

The lock rod (02) has a small-diameter shaft and a large-diameter shaft vertically
Moved in the axial direction, though details are omitted because they are connected
Allows the small diameter shaft to move freely with respect to the lock plate.
Or the large diameter shaft is locked to the lock plate.
It is like this.

[0007] Such a push-button locking device smell
In terms of touch, manufacturing and price , push buttons are often made by molding a slightly hard synthetic resin such as polypropylene or rubber.

[0008]

In the above-mentioned conventional device, the cover (01) and the push button (03) are formed as separate bodies, so that their manufacturing and assembly are troublesome, and the push button is also difficult. If the attachment (03) of the cover (01) to the cover (01) is uncertain, the push button (03) may fall off and be lost.

Further, the body portion (07) of the push button (03) has a stepped shape.
The push button (03) is allowed to move up and down, so if the push button (03) is pushed many times ,
It was sometimes damaged by repeated bending of (07).

According to the present invention, the cover and the push button are
By molding as an integral body, its manufacture is facilitated and the risk of breakage of the push button is reduced.

[0011]

According to the present invention, a horizontal bellows having an annular corrugation is formed at the center of an annular body protruding upward from a cover formed of a hard material such as synthetic resin.
Through the part, the push button is integrally formed,
On this horizontal bellows, orient the push button in the radial direction.
Underside of the push button
The upper end of the lock rod is fitted and fixed in the upward fitting hole provided in the center.
By doing so, the above problem is solved.

[0012]

[Action] cover, the annular body portion, the push button and the horizontal bellows portion, since it is integrally molded by synthetic resin or the like,
It is easy to process and does not require assembly. Further, since the push button is supported by the horizontal bellows portion, even if the push button is pressed, the bellows portion only extends obliquely downward and is not unduly deformed and is not accidentally damaged.

[0013]

1 and 2 show an embodiment of the present invention,
The cover (1) and the push button (2) are integrally formed of a slightly hard synthetic resin. The push button (2) is connected to the upper end of the tubular body (4) via an annular horizontal bellows (3).

At the center of the lower surface of the push button (2),
Is fitted hole (5) is formed, to which is adapted to the <br/> head of the locking rod (8) to be described later can be fitted and held.

The thickness of the horizontal bellows portion (3) is preferably about 0.2 to 0.7 mm, and the thinner the thickness, the easier the elastic deformation. However, since there is a limit to how thin the thickness can be made depending on the type of material, the horizontal bellows part (3) is provided with a slit (6) of an appropriate depth in the radial direction around the push button (2). There are several places . As a result, the elastic deformation of the horizontal bellows part (3) accompanying the push operation of the push button (2) should be performed without difficulty.
To become.

FIG. 3 shows a state in which a portion of the base (7) where the lock rod (8) is fitted and held is covered with the cover (1). The upper end of the lock rod (8) has the above-mentioned push button (2).
Is fitted into the upward fitting hole of the lower surface (5), and it
Push button with coil spring (9) inserted in itself
It is biased upward together with (2) .

A lock plate (10) for moving the back rod of the chair up and down, for example, is provided between the upper and lower bases (7, 7) . As shown in FIG. 4, the lock plate (10) is provided with narrow narrow guide holes (12) having large diameter holes (11) at both ends and a central portion.

The lock rod (8) has a small diameter shaft (13) and a large diameter shaft (14).
In the state shown in Fig. 3, the large diameter shaft (1
4) is fitted in the large diameter hole (11) of the lock plate (10), lock
Blocks the movement of the cuprate (10).

When the push button (2) is pushed downward against the coil spring (9), the small diameter shaft (13) of the lock rod (8) comes to the position of the narrow guide hole (12), and the lock plate (10). ) Can be moved laterally .

Since the push button (2) is connected to the tubular body (4) through the horizontal bellows (3), even if the push button (2)
Also press down the (2) powerful downward, horizontal bellows portion (3) only extend diagonally downward, not applied excessive stress, do not be damaged without reason.

The horizontal bellows (3) andpush button
(2) is surrounded by a tubular body (4) made of a hard material
Therefore, even if an unexpected external force is applied from the side, the horizontal bellows
(3) is damaged,push buttonThe object hits (2)
Therefore, it does not malfunction.

[0022]

According to the present invention, the following effects can be obtained. (a) Since the cover , the tubular body, the push button and the horizontal bellows are integrally molded with the cover by using synthetic resin or the like, it is not necessary to manufacture or assemble them separately from the cover. Is significantly reduced.

(B) Even if the push button is pressed, the horizontal bellows portion only extends obliquely downward, no excessive force is applied, and the possibility of breakage is small.

[0024] (c) the horizontal bellows unit and push-button, because it is surrounded by the cylindrical body, the external force from the side,
The horizontal bellows will not be damaged.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view taken along the line AA of FIG.

FIG. 3 is a vertical cross-sectional view of a state in which the base is covered by the embodiment shown in FIG.

4 is a cross-sectional view taken along the line BB of FIG.

FIG. 5 is a plan view showing an example of a conventional push button covering device.

6 is a cross-sectional view taken along the line CC of FIG. (1) Cover (2) pushbutton (3) horizontal bellows portion (4) the cylindrical body (5) Hamaana (6) slits (7) base (8) locking rod (9) a coil spring (10) locked Plate (11) Large diameter hole (12) Guide hole (13) Small diameter shaft (14) Large diameter shaft

Claims (1)

[Scope of utility model registration request] 1. Molded from a hard material such as synthetic resin
At the center of the annular body protruding upward from the cover, the annular
The push button is integrated through the horizontal bellows consisting of wavy lines.
And push button on this horizontal bellows.
Cut a plurality of slits that face the radial direction as the center, and
A lock is placed in the upward fitting hole provided at the center of the lower surface of the push button.
A push-button type locking device in which the upper end of the lever is fitted and fixed .