JP3536141B2 - Bicycle lock - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle lock capable of simultaneously locking and unlocking two bicycle locks respectively attached to a front wheel and a rear wheel of a bicycle. In this regard, the present invention is characterized in that a circle lock is used for the front and rear locks, and the lock rods of the two circle locks are connected by a flexible rod to interlock with each other. [0002] Bicycles are usually equipped with one lock. Bicycle locks in which locking and unlocking operations of one lock can be remotely controlled by a flexible rod at a handle portion are disclosed in, for example, Japanese Utility Model Publication No. 6-29179 and Japanese Utility Model Publication No. 7-6442. [0003] In a bicycle that is locked by a single lock attached to a vehicle body, there is a concern about the effect of preventing theft. It is common practice to easily double lock another type of lock. When two locks are used in this way, the security is improved, but the operation of locking and unlocking is complicated. Therefore, two locks are attached to one bicycle to prevent theft and to prevent theft. It has been an issue to be solved that the locking and unlocking operations of the two locks can be easily performed without complicating the operation. Accordingly, the present invention provides a bicycle circle lock attached to a frame along a front wheel of a bicycle and a frame along a rear wheel of the bicycle. The racks are formed, and the pinions meshed with the respective racks are connected to each other by a flexible rod. Through this flexible rod, one of the circle locks is locked and unlocked by the operation of the lock rod for unlocking and unlocking the other circle lock. An object of the present invention is to provide a bicycle lock in which front and rear circle locks can be simultaneously locked and unlocked by operating a rod. According to the present invention, the two locks attached to the front and rear of the bicycle have a double-locked security effect so that they can be visually recognized. In addition, in the two locks before and after the lock, the movement of the lock rod when locking and unlocking one circle lock is transmitted to the other circle lock via the rack, the pinion and the flexible rod. Lock operation is not complicated and can be easily operated. FIG. 1 is a perspective view of a bicycle lock according to the present invention.
The bicycle B has a circle lock 2 attached to a vehicle body b along a front wheel 1 and a circle lock 4 attached to a vehicle body b ′ along a rear wheel 3. As shown in FIG. 2, a rack 6 is formed on the lock rod 5 fitted to each of the circle locks 2 and 4 along an arc-shaped upper surface. Each of the racks 6 has a circle lock 2,
4, the pinion 7 is engaged, and the locking rod 5 is engaged.
It is provided so as to rotate following the movement of the object. Two pinions 7 provided in both circle locks 2 and 4
Are connected to each other via a flexible rod 9 in which both ends are integrally fitted to a pinion shaft 8 so as to rotate in association with each other. Therefore, as shown in the right hand of FIG. 2, when the knob 10 integrally attached to one of the locking rods 5 is pushed downward as shown, the movement of the locking rod 5 is each. The transmission is transmitted to the other lock rod 5 via the rack 6, the pinion 7, and the flexible rod 9, and the two circle locks 2 and 4 are simultaneously locked. In this embodiment, one of the circle locks 4 (the lock for locking the rear wheel 3 in FIG. 1) in which the lock rod 5 has a knob 10 is the lock rod 5 in the lock position, similarly to a normal circle lock. , A traction spring 12 for returning the lock rod 5 released from the hook of the hook plate 11 to the unlocked position, and a locking mechanism 13 for swinging the hook plate 11 away from the locked position.
And a biasing spring (not shown) that constantly biases the hook plate 11 toward the locking position. In addition, since these lock mechanisms are conventionally known, detailed description and illustration are omitted. The circle lock 2 of the front wheel 1 driven by the circle lock 4 does not move its position unless the flexible rod 9 rotates, so there is no need to particularly provide a locking mechanism. The lock position is indirectly held, and the hook plate 1 is unlocked as the lock mechanism 13 is unlocked.
1 is released and returns to the unlocked position by the accumulated force of the traction spring 12. The flexible rod 9 is held at the mounting position between the front wheel 1 and the rear wheel 3 by holding members 14 arranged at appropriate positions. As described above, according to the bicycle lock of the present invention in which the two locks provided at the front and rear are simultaneously operated, the two positions of the front wheel and the rear wheel are locked. The anti-theft effect increases. Further, since the two locks are simultaneously locked and unlocked, the operation is not complicated and the use is convenient. The present invention has excellent effects as described above.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing an embodiment of the present invention together with a use state thereof. FIG. 2 is a partially cutaway enlarged explanatory view of the embodiment. [Description of References] 1 Front wheel 2 Circle lock 3 Rear wheel 4 Circle lock 5 Lock rod 6 Rack 7 Pinion 8 Pinion shaft 9 Flexible rod 10 Knob 11 Hook plate 12 Traction spring 13 Lock mechanism 14 Holder b Body b 'Body

Claims (1)

(57) [Claims] [Claim 1] A bicycle circle lock is attached to a frame along a front wheel and a frame along a rear wheel of a bicycle, and a rack is formed on a lock rod of both circle locks. Then, the pinions meshed with the respective racks are connected to each other by a flexible rod, and the lock rod of the other circle lock is driven by the operation of the lock rod for locking and unlocking one of the circle locks via the flexible rod. A bicycle lock that allows the front and rear circle locks to be locked and unlocked simultaneously.