JP3045678U - Bicycle circular lock structure - Google Patents

Abstract

(57) [Problem] To provide a bicycle circular lock structure which is easy to manufacture and assemble and can perform locking and unlocking operations accurately and appropriately. SOLUTION: The main body mainly includes a cover 20, an outer cylinder 22, a spring 23 and a bar 24, and the cover 20 is provided.
Is a single molding, and a piece-shaped bar 24 is attached to the bottom of the rear end by a spring 23, and a hole 240 is formed on the bar 24.
There is an outer cylinder 22 at the front end of the cover.
(2) A convex pillar 220 eccentric to the rear end is fitted so as to fit on the hole 240, and a spring 23 is provided in the cover 20.
And the bar 24 are quickly assembled, and the convex column 220 of the outer cylinder 22 is formed.
To easily form the key body structure 2 and the eccentric convex column 2
In step 20, the bar 24 is moved up and down to make the lock / unlock state.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to the structure of a key, and more particularly to the structure of a bicycle circular lock. It has a key body structure that is easy to manufacture and assemble, performs accurate and appropriate locking and unlocking, reduces the cost of manufacturing and assembly, and is accurate and appropriate for locking and unlocking.

[0002]

[Prior art]

 In the conventional key body structure 1 (see FIG. 1), the outer cylinder 11 in the cover 10, the rotating body 110 provided at the rear end of the outer cylinder 11, the hook 12, and the torsion provided between the hook 12 and the cover 10. A spring 13 is provided, and the hook 12 is linked to the torsion spring 13. The key body structure 1 shown in FIG. 2 is installed in the circular key 3, and when the chain ring 30 is pressed, that is, when the hook port 31 corresponds to the hook 12, the hook 12 is operated by the action of the torsion spring 13. 31 and the locking operation is achieved. At the time of unlocking, the outer cylinder 11 is turned with a key, the hook 12 is wound while twisting the torsion spring 13, and the chain ring 30 of the spring 32 is pulled to be in the unlocked state.

[0003]

[Problems to be solved by the invention]

 The problem to be solved by the present invention is to solve the above-mentioned disadvantages (1) to (3). (1) Because the hook receives the torsion force of the spring, it is opened slightly at the time of assembly, so it is very troublesome when assembling the hook at a fixed position on the cover, which wastes time during manufacturing and assembly and reduces production capacity. Bring. (2) The hook is unlocked by the twisting of the torsion spring side surface, so the spring force on the side surface becomes unstable and interferes with the locking / unlocking operation, which is not smooth and inconvenient in use. . (3) Once the elastic fatigue of the torsion spring occurs, the hook cannot be moved, causing a problem in the accuracy and appropriateness of the locking.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the structure of the bicycle circular lock of the present invention is easy to manufacture and assemble, accurate and appropriate locking and unlocking is performed, lowering the manufacturing and assembly costs, and accurate and appropriate locking. It provides tablets. In other words, the structural improvement of the bicycle circular lock of the present invention is that the main body is mainly composed of the cover, the outer cylinder, the spring and the bar, There is a bar on the bar, there is a hole on the bar, there is an outer cylinder on the front end of the cover, and at the rear end of the outer cylinder, an eccentric convex column is fitted so that it fits on the hole, and inside the cover The spring and the bar are quickly assembled, the key body structure is easily made by combining the convex columns of the outer cylinder, and the bar is moved up and down with the eccentric convex column to apply and unlock. is there.

[0005]

[Embodiment of the invention]

 FIG. 3 shows a first embodiment of the structure of the bicycle circular lock according to the present invention. The structure of the bicycle circular lock according to this embodiment mainly comprises a cover 20, an outer cylinder 22, a spring 23 and a bar 24. The cover 20 is made of one piece, and a piece 23 is attached to the bottom of the rear end of the cover 20 by a spring 23. A hole 240 is formed on the bar 24. An outer cylinder 22 is provided at the front end of the cover 20, and the key body structure 2 is configured so that the eccentric convex column 220 at the rear end of the outer cylinder 22 fits into the hole 240. The convex column 220 of the cylinder 22 fits into the cover 20 quickly, and the key body 24 and the eccentric convex column 220 move the bar 24 up and down to open and close. At the time of manufacturing and assembling the key body structure 2, a hole is formed to be inserted into the cover 20, a piece-shaped bar 24 is provided on the bottom at the same time as the spring 23, and the outer cylinder 22 is inserted at the front end. The convex column 220 at the rear end of the outer cylinder 22 is fitted so as to correspond to the hole 240 of the bar 24, thereby forming the key body structure 2.

FIG. 4 shows a state in which the key body structure 2 is assembled to the circular key 3 when the hook opening 31 on the chain ring 30 corresponds to the bar 24 by simply pushing the chain ring 30 when locking. The spring 23 of the bar 24 pushes the bar 24 down, and is fitted on the hook 31 to be in a locked state. At the time of unlocking, the outer cylinder 22 is rotated, the convex column 220 at the rear end of the outer cylinder 22 is eccentrically operated and rotated, the bar 24 is pulled up, and the spring 32 returns the chain ring 30 to the original position to unlock. I do. As shown in a second embodiment of the present invention (see FIGS. 5 to 7), a rotating body 21, a spring 211, and a pushing piece 212 are sequentially assembled at the front end of the cover 20, and the pushing piece 212 is an outer cylinder. The piece 212 is fitted on the rotating body 21 with a spring 211 attached to the rear end thereof. The eccentric convex column 210 is provided at the rear end of the rotating body 21 and fitted on the hole 240. The spring 211 is compressed by pushing the pushing piece 212 at the front end of the key, and the pushing piece 212 is fitted into the groove in the rotating body 21 so that the bar 24 can be moved up and down. .

[0007]

[Effect of the invention]

 As can be seen from the above, the present invention has the following advantages. (1) The bar, spring, and outer cylinder are incorporated into the cover, eliminating the hassle of fitting on the conventional torsion spring, and the time to assemble the key body structure is fast, which saves assembly time and production capacity. Suitable for mass production because (2) The bar moves up and down to enter the locked / unlocked state, and the up / down operating method allows accurate locking / unlocking without the torsion of the torsion spring interfering with the locking operation as in the conventional one. .

[Brief description of the drawings]

FIG. 1 is a conventional three-dimensional exploded view.

FIG. 2 is a conventional use state diagram.

FIG. 3 is a three-dimensional exploded view showing the first embodiment of the present invention.

FIG. 4 is a view showing a use state of FIG. 3;

FIG. 5 is a three-dimensional exploded view showing a second embodiment of the present invention.

FIG. 6 is a locked state diagram of FIG. 5;

FIG. 7 is an unlocked state diagram of FIG. 5;

[Explanation of symbols]

 2 Key body structure 20 Cover 22 Outer cylinder 110 Rotating body 21 Rotating body 210, 220 Convex column 211, 23, 32 Spring 212 Push-in piece 24 Bar 240 Hole

Claims (2)

[Utility model registration claims] The main body is mainly composed of a cover, an outer cylinder, a spring and a bar. The cover is made of one piece, and a piece-shaped bar is attached to the bottom of the rear end by a spring. There is a hole, there is an outer cylinder at the front end of the cover, and the eccentric convex column at the rear end of the outer cylinder corresponds to fit on the hole, the spring and the bar are quickly incorporated in the cover, A bicycle circular lock structure, in which the key body structure is easily made by combining the convex columns of the outer cylinder, and the bar is moved up and down with the eccentric convex column to lock and unlock. 2. A rotating body, a spring,
The push-in piece is assembled, the push-in piece is fitted into the outer cylinder, a spring is attached to the rear end and fitted on the rotating body, and an eccentric convex column is provided at the rear end of the rotary body, and the convex column is provided. 2. The spring is compressed by pushing the push piece at the front end of the key, and the push piece is fitted into the groove in the rotating body so that the bar can be moved up and down.
The structure of the described bicycle circular lock.