JP2535553Y2 - Push button lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical field to which the present invention pertains In this invention, a plurality of push buttons protruding on the surface of a body are pressed a predetermined number of times, respectively, thereby releasing a lock rod locked inside the body. And a push-button lock.

2. Description of the Related Art Conventional push-button locks include, for example, Japanese Utility Model Laid-Open No. 59-194466 and Japanese Patent Laid-Open No. 52-29400.

The former conventional lock is limited to a lock generally called a padlock, and has a disadvantage that it cannot be used for a lock such as a wire lock used as a bicycle lock, for example.

Further, in this lock, when a rigid push button (3) integrally provided with a feed claw portion is pushed to advance the gear (4) by one tooth, the push button to be returned by being biased by the return spring (11) ( 3) has a structure in which the feed claw portion cannot be returned by holding the feed claw on the tooth tip of the gear (4).
In a push-button lock in which the push-button must perform a reliable reciprocating sliding operation, there is a disadvantage that a smooth push-button operation cannot be expected in this lock.

On the other hand, in the first embodiment, the leaf spring (8), which is also made of a leaf spring, is attached to the leg (6) made of a leaf spring, which is separate from the push button, via a mounting screw. Although it is recognized that the pawl (8) performs a predetermined reciprocating operation, there is a drawback that the number of parts is large, the assembly is troublesome, and the cost is high.

In addition, the leg (6) of the first embodiment needs to be provided with a separate check pawl for preventing the ratchet (9) from reversing and rotating together when the feed pawl (8) is returned. Also in the example, since the leg (6) and the feed claw (8) are separate bodies, the above-mentioned disadvantage that the number of parts is large and assembling is troublesome cannot be solved, and it is necessary to separately provide a check claw.

Bicycle locks such as wire locks and chain locks that do not use keys are desired to be unlockable only by hand to enable unlocking operations in dark places, and can be manufactured at low cost. It has been an issue to develop a push-button type lock that can be reliably unlocked.

Means for Solving the Problems Accordingly, the present invention provides a plurality of push buttons protruding to the surface of the body, and is formed separately from each push button and provided on the back surface of each push button together with a return spring. A leaf spring feed claw provided at one end and a feed claw portion provided at the other inner end to form a bifurcated leaf spring, and interlocks with the up / down operation of each push button via the leaf spring feed claw. A plurality of rotating bodies integrally provided with a gear portion and a disk portion and coaxially rotatably connected to each other.

A reset rod that rotatably passes through the centers of the plurality of rotating bodies and engages with the engaging portions provided on each rotating body by rotating in one direction to rotate each rotating body to a uniform 0-angle position.

At the 0-angle position, the unlocking recesses respectively provided on each rotating body so as to rotate to a predetermined rotation position by being given a predetermined number of up and down operations to each of the push buttons, and in parallel with the reset rod. The rotator is provided so as to be slidable, and when the unlocking concave portion reaches the unlocking position, the rotating body can slide in the axial direction freely, and the locking rod is locked by following the pressing of the reset rod. A locking mechanism comprising a hook plate that is released from the stop and a restoring spring that returns the hook plate together with the reset rod to a locked position.

The present invention provides a push button lock having the above configuration.

In the lock of the present invention configured as described above, when the reset rod is rotated to one side and rotated to a predetermined position, each rotating body integrally provided with the gear portion and the disk portion has a predetermined unlocking operation position, that is, 0. Opening provided on each rotating body is performed by simultaneously rotating to the angular position, and then pressing each push button, which is engaged with the gear portion of each rotating body and comes out on the body surface, a predetermined number of times, respectively. The locking recesses respectively reach the unlocking position, and the hook plate that has locked the locking rod can slide in the unlocking direction. Next, when the reset rod is pushed, the hook plate slides in the unlocking direction,
Release the lock. When the locking rod is once removed from the body and then locked again, the hook plate returned to the locked position by the restoring spring is pushed in against the urging of the spring and latched on the hook plate. By rotating the reset rod or pressing the push button an arbitrary number of times, the sliding operation of the hook plate is restrained again, and the locking operation is maintained by the hook plate.

Therefore, the unlocking and locking operations of the lock without using a key can all be performed using only fingers, and as a lock rod of this lock, one has a fixed end on the body of the lock and a head on the other end. A long wire rod such as a general wire lock or chain lock having a free end provided with a lock rod can be used.

Further, the push button mechanism of the lock of the present invention has a leaf spring feed claw provided with a return spring on the back surface of the push button protruding to the surface of the body, a check claw portion provided at one inner end, and at the other inner end. The drawbacks of the conventional product, in which the feed claw portion is provided, so that the check claw portion is provided separately, or the feed claw and the feed claw portion are formed separately and screwed together. Thus, a push-button lock that performs a smooth and reliable feeding operation, has a reduced number of parts, and is easy to assemble can be produced without increasing the cost.

The present invention has solved the above-mentioned problem as described above.

An embodiment of the present invention will be described below with reference to the drawings.

In the drawing, H is formed of two half-shaped members 1 and 2 each having a semi-cylindrical shape and provided with a concave and convex portion for fitting therebetween, and is fixed to the hollow body by a set screw (not shown). The body 3 has three push buttons protruding from the surface of the body H so as to be able to be pressed, and 5 has a bifurcated leaf spring feed claw provided with a return spring 4 on the back surface of each push button 3. Each feed claw 5
Has a check claw 5 'at one of its inner ends and a feed claw 5 "at the other inner end.

The gear 6 is engaged with the check claw 5 'and the feed claw 5 "of the feed claw 5 and is fed by one tooth each time the push button 4 is pressed down. A disk portion 8 which rotates integrally, and is provided coaxially and rotatably with each other;
A reset rod, which is rotatably and slidably inserted through the center of the rotary body 6 and has a knob 10 at its outer end; Numeral 11 denotes a leaf spring piece 12 formed on the rear side (right side in the figure) of each rotating body 6 so as to rotate integrally with the reset rod 9 and formed at the tip of the peripheral surface as shown in FIG. 6 is fitted into a peripheral groove 13 formed on the back side of the peripheral groove 13.
In order to engage with the engaging portion 14 formed in a step-like shape on the inner surface of the rotary member, each rotating body 6 is driven to rotate in one direction of rotation of the reset rod 9 (rotation in the same direction as the feed direction of the feed claw 5). If the reset rod 9 is rotated by a maximum of one rotation with the circular leaf spring as described above, the three rotators 6 are aligned at the same angular position.

Reference numeral 15 denotes a notch provided on a flange portion 16 formed on the outer end side of the rod 9 for setting the initial position of the push button operation for unlocking, that is, the zero position, to the reset rod 9. This is a latching spring that elastically fits with and senses that the reset rod 9 has reached the zero position.

R is related to the rotating body 6 and the reset rod 9,
This is a locking mechanism provided in the container body H for locking and releasing the locking rod 18. The locking mechanism R is configured such that the push button 3 is given a predetermined number of up / down operations at the 0 position to rotate to a predetermined unlocking position. 8 left end face shown)
1 and one end thereof is bent into an L-shape as shown in FIG. 1 and fitted to the reset rod 9 between the flange 16 and the knob 10 so as to be parallel to the rod 9. The three projections 20 that engage with the unlocking recesses 19 are arranged on a plate-like portion along the outside of each rotating body 6, and a rectangular window hole 21 for locking the locking rod 18 is provided at the tip of the plate-like portion. A hook plate 22 provided so as to slide along the reset rod 9 along the axial direction, and an open plate that normally urges the hook plate 22 in the locking direction (left direction in the figure) and slides right. It comprises a hook plate 22 after the lock operation and a restoring spring 23 for returning the reset rod 9 to its original position.

The lock rod 18 has a head portion 18 'which is prevented from being pulled out by the window hole 21 of the hook plate 22, is connected to the wire Y, and the other end is provided between the two half-shaped members 1 and 2. Fixed end 24 hung in body H
Having.

In the drawing, reference numeral 25 denotes a coil spring for pressing the head 18 'of the locked rod 18 inside the window hole 21 of the hook plate 22 via a U-shaped push plate 26, 29 denotes a push button 3, a return spring 4, Reference numeral 28 denotes a rubber bellows tube that supports the feed claw 5 and holds the rotating body 6 from both ends, and a rubber bellows tube 28 covering the rear part of the wire Y.

Next, the use of the embodiment configured as described above will be described.

In the locked state shown in FIGS.
Is turned to the position where the notch 15 is latched by the latch spring 17,
Each rotator 6 is uniformly aligned at the 0 position. Next, when each push button 3 is pressed a set number of times, for example, 2, 9, 7 from the left side of the drawing, the unlocking concave portion 19 of the rotating body 6 is rotated by the rotation of the gear portion 7 and the position of the projection 20 of the hook plate 22 is reached. Respectively.
In this state, when the reset rod 9 is pushed in,
22 is slid and the lock spring is biased on the head 18 'by the coil spring 25.
18 escapes from the window hole 21 and automatically jumps out of the body H.

Next, when locking, the head 18 ′ of the locking rod 18 is pushed into the window hole 21, and the hook plate 22 restored by the restoring spring 23 is retracted against the spring 23, and the head 18 ′ is locked. Locking is performed by the hook plate 22 that returns with passage, and then the locked state is maintained by turning the reset rod 9 or rotating each push button 3 from the unlocked position.

The bifurcated feed pawl 5 provided on the back surface of each push button 3 together with the return spring 4 pushes down the push button 3 and pushes down the gear part 7 by one tooth with the feed pawl 5 ″ on the right side of FIG. Check member 5 ′ that rotates the rotating body 6 to one side and simultaneously descends
Is engaged with the gear portion 7 after the rotation to maintain the rotation position.

The operation of returning the feed claw 5 "and lowering the check claw 5 'is smoothly and reliably performed by the elastic passage of the gear 7 with the tooth tip. The rotation of the rotating body 6 due to the operation can be confirmed by elastic shock vibration when the rotating body 6 comes into contact with the gear portion 7 when the check pawl portion 5 'is restored.

In implementing the present invention, it goes without saying that the present invention can be applied not only to the lock rod 18 having a wire connected thereto but also to a flexible one such as a tene.

Effects of the Invention As described above, according to the lock of the present invention, the lock having the push button is provided with the reset rod and the lock mechanism configured as described above to lock and release the lock rod. Since a long and flexible material can be used for the lock rod,
It is suitable for a lock for a bicycle that often requires opening and closing operations in a place that is not bright.

Further, between the push button and the gear portion of the rotating body, a two-pronged type formed separately from the push button, provided with a check claw portion at one inner end and a feed claw portion at the other inner end. The pushbutton mechanism of the present invention having a leaf spring feed pawl has a smaller number of parts and is easier to assemble than a conventional pushbutton mechanism of the same type or the same function, so that this type of lock can be produced at low cost.

Further, the push button mechanism according to the present invention, when the push button is pressed down, the gear portion pressed down and rotated by one of the feed claws,
At the same time, it is held at the rotation position without being reversed by the engaging operation of the check claw that descends.However, the operation when the check claw descends and the operation when the feed claw returns when the claw feeds are performed, respectively. The operation is performed smoothly and reliably because the operation is performed by the elastic passage of the gear portion with the tooth tip. Also, since a predetermined number of rotations of each rotating body due to the operation of the push button can be confirmed by elastic shock vibration generated by the contact of the check pawl provided at the inner end of the feed pawl with the gear at the time of repositioning. There is also an advantage in use that the unlocking operation is easy.

The present invention has a number of excellent practical effects as described above.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention. FIG. 1 is an exploded perspective view of a partially cut-away view, FIG. 2 is a vertical cut-away view of a partially cut-out state, and FIG. FIG. 4 is a partially cut left side view mainly showing an engagement state between a push button and a gear portion, and FIG. 5 is a view mainly showing an engagement state between a reset rod and a rotating body. It is a notch right view. H ... body, 1,2 ... half-shaped member, 3 ... push button, 4 ...
Return spring, 5: Feeding claw, 5 ': Check claw, 5 "...
Feeding claw part, 6 Rotating body, 7 Gear part, 8 Disc part, 9 Reset rod, 10 Knob part, 11 Leaf spring, 12 Leaf spring piece, 13 ... circumferential groove, 14 ... engaging part, 15 ...
… Notch, 16… Flange, 17… Latch spring, R ……
Locking mechanism, 18 Lock rod, 18 'Head, 19 Unlocking recess, 20 Projection, 21 Window hole, 22 Hook plate, 23 Restoring spring, Y Wire , 24 ... fixed end, 25 ... coil spring, 26 ... press plate, 27 ... receiving metal, 28 ... bellows tube.

Claims (1)

(57) [Scope of request for utility model registration] 1. A plurality of push buttons 3 protruding on the surface of a body H
Are formed separately from the respective push buttons 3 and provided on the back surface of each of the push buttons 3 together with the return spring 4. A check claw 5 ′ is provided at one inner end and a feed claw 5 ″ is provided at the other inner end. And a gear part 7 and a disk part 8 which are interlocked with the lifting / lowering operation of each push button 3 via the leaf spring feed claw 5 are integrally provided. A plurality of rotating bodies 6 rotatably connected to each other coaxially rotatably through the centers of the plurality of rotating bodies 6 and engaged with engaging portions 14 provided on the respective rotating bodies 6 by rotation in one direction. A reset rod 9 for rotating each of the rotating bodies 6 to the same 0-angle position together with the push-buttons 3 being given a predetermined number of up and down movements at the 0-angle position to rotate to the predetermined rotation position. An unlocking recess 19 provided in each rotating body 6 so as to move, The rotator 6 is slidable in the axial direction when the unlocking concave portions 19 reach the unlocking positions, respectively. And a restoring spring 23 for returning the hook plate 22 to the locked position together with the reset rod 9. The push-button lock having the above configuration.