CN2338448Y - Theft-proof lock for bicycle - Google Patents

Abstract

The utility model relates to a theft-proof lock for a bicycle, which comprises a lock body 1, a lock core 3, a key 4, a marble, a lock axle 6, etc., wherein the cross section of the key 4 is in T shape, the horizontal plane 4b of the key is provided with key teeth and the vertical plane 4a of the key is parallel to the facade of the lock body 1. A part of each word in a set of complete numbers 2 is arranged on the facade of the lock body 1, and the other part of each word is arranged on the vertical plane 4a of the key 4. An inserting sheet 11 which is inserted into the lock body 1 is tangential with the lock core 3. A set of marble holes 10 are formed on the inserting sheet 11. When the utility model is locked, a part of the inserting sheet 11 is inserted in a groove 6b of the lock axle 6. The utility model has the double theft-proof functions that the numbers on the bicycle lock are not complete when the bicycle is locked and the key 4 is drawn out.

Description

Anti-theft lock for bicycle

The utility model relates to a kind of anti-theft lock for bicycle.

China is bikedom, and is stolen for exempting from bicycle, and the bicycle lock of various novelties is constantly to generation, but anti-theft effect is still undesirable.

The purpose of this utility model provides a kind of new anti-theft lock for bicycle, and both functions of tool lock car has again to be the dual-use function of antitheft vehicle because of number on the lock is imperfect and doubtful.

For achieving the above object, the technical scheme that the utility model proposes is: anti-theft lock for bicycle is made up of lock body, lock core, pellet shot from a slingshot and pellet shot from a slingshot spring, key, lock shaft etc., key is T word cross section, have the key bit vertical plane to be embedded in the short slot in lock body front and with the lock body front on its horizontal plane and flush, each the word part in one group of complete number is on the vertical plane of another part at key on the lock body front; Fluted on the lock shaft, the slit tangent with lock core arranged in the lock body, be inserted with inserted sheet in this slit, the part of inserted sheet is embedded in the lock shaft groove when locking, and the pellet shot from a slingshot hole that can insert pellet shot from a slingshot is arranged on the inserted sheet, and inserted sheet is exposed at the lock body handle of lock body outside in addition.

Adopt above-mentioned anti-theft lock for bicycle, the lock car of can locking, it is incomplete to extract behind the key on the lock number out, thereby has the double anti-theft function.

Below in conjunction with drawings and Examples the utility model anti-theft lock for bicycle is described in further detail.

Fig. 1 is the utility model anti-theft lock for bicycle phantom drawing;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 2;

Fig. 4 is the schematic diagram that lock shaft pins handle-bar;

Fig. 5 is the sectional view of key;

Fig. 6 is the lock shaft sectional drawing;

Fig. 7 is the rear elevation of Fig. 1;

Fig. 8 is the B-B portion view of embodiment 2;

Embodiment 1:

To shown in Figure 3, lock body 1 subdivision is preceding lock body 1a and rear locking 1b by Fig. 1, and connects synthetic by attachment screw 7.Preceding lock body 1a front has among short slot, the preceding lock body 1a is equipped with lock core 3, and the part face of front and back lock body is just in time tangent with lock core 3.By Fig. 1 and Fig. 5 as seen, key 4 is T word cross section, there is key bit to insert in the lock core 3 on its horizontal plane 4b, flush in the short slot in lock body 1a front and with preceding lock body 1a front before its vertical plane 4a is embedded in, each the word part in one group of complete number 2 is in the front of preceding lock body 1a and on the vertical plane 4a of another part at key 4.One group of lock core marble 14 is housed in the lock core 3, lock spring 15 and pellet shot from a slingshot spring 16 are housed in the pellet shot from a slingshot hole of relevant position among the rear locking 1b.By Fig. 3 and shown in Figure 6, the downward groove 6b of a recess is arranged on the appropriate location of lock shaft 6, all there is convex shoulder the front and back end of lock shaft 6, is with lock shaft spring 17 on the 6C of lock shaft rear end.A slit 8 is arranged on the interface of preceding lock body 1a and rear locking 1b, in this slit 8, be inserted with a slice inserted sheet 11, there is one group of inserted sheet pellet shot from a slingshot hole 10 at the middle part of inserted sheet 11, an inserted sheet transverse arm 11b is arranged at inserted sheet 11 tops, be with inserted sheet spring 12 on this inserted sheet transverse arm 11b, and have the inserted sheet spring silently 5 to seal.The bottom of inserted sheet 11 has inserted sheet handle 11a to be exposed at the outside of lock body 1.

The utility model anti-theft lock for bicycle course of work is as follows:

When inserting key 4 in lock core 3, because the jacking of key bit, lock core spring 14 and lock body spring 15 just in time all are arranged in the inserted sheet pellet shot from a slingshot hole 10 of inserted sheet 11, and at this moment inserted sheet 11 is in removable state.If move inserted sheet handle 11a inserted sheet 11 is moved to the left with hand, lock shaft groove 6b is withdrawed from the inserted sheet top, lock shaft 6 moves forward under lock shaft spring 17 effect, and lock shaft rear end 6c withdraws from the hole of the front fork vertical shaft 19 of bicycle and front fork vertical shaft sleeve pipe 18 and is in unlocking condition; Make inserted sheet 11 move right the effect of inserted sheet transverse arm spring 12 (simultaneously also have) if move inserted sheet handle 11a with hand, pushing lock shaft front end 6a with hand simultaneously moves lock shaft 6 backward, then the inserted sheet top embeds among the lock shaft groove 6b, lock shaft rear end 6c then inserts in the hole of bicycle front fork vertical shaft 19 and front fork vertical shaft sleeve pipe 18, extract key 4 this moment out, lock spring 15 will embed in the inserted sheet pellet shot from a slingshot hole 10 inserted sheet 11 can not be moved, so can't move forward and be in locking state owing to the inserted sheet top has embedded among the lock shaft groove 6b lock shaft 6.Owing to pinned handle-bar at an angle, bicycle can not be kept straight on and can only be bended, and positive remaining each word of a sets of numbers of preceding lock body 1a is all incomplete and have a double anti-theft effect.

Because it is synthetic that lock body 1 is connected with rear locking 1b by preceding lock body 1a, be lock body accurate positioning before and after guaranteeing, the front and back lock body is provided with alignment pin 9 as shown in Figure 2.This alignment pin 9 also is the attachment screw of preceding lock body 1a and rear locking 1b simultaneously, and alignment pin plays for one section simultaneously in cornerwise two attachment screws 9 bar portions in 4 attachment screws 7.

Embodiment 2:

Lock body 1 is the whole lock body of subdivision not, thereby need not attachment screw and alignment pin, because the needs of processing and mounting process, a lock shaft spring silently 22 is arranged on lock body 1, and other structures are identical with embodiment r.

No matter be embodiment 1 or embodiment 2, lock marble hole 15a all is blind holes.The lock body 1b of embodiment 1 subdivision, this lock marble hole 15a can punch from the split surface direction; Embodiment 2 whole lock bodies then can be from the front short slot direction punching of lock body 1.Lock marble hole 15a is the theftproof performance that blind hole can improve this lock.

The installation of the utility model anti-theft lock for bicycle has two screw 21 is installed at the back side of lock body 1 as shown in Figure 7, and available mounting strap and mounting screw are fixed tightly in anti-theft lock for bicycle on the front fork vertical shaft sleeve pipe 18 of bicycle easily.

Claims (6)

1, a kind of anti-theft lock for bicycle, mainly form by lock body (1), lock core (3), key (4), pellet shot from a slingshot (14,15) and pellet shot from a slingshot spring (16), lock shaft (6) etc., it is characterized in that: key (4) is T word cross section, on its horizontal plane (4b) key bit is arranged and vertical plane (4a) is embedded in the front short slot of lock body (1) and with the front of lock body (1) and flushes, each the word part in one group of complete number (2) is on the vertical plane (4a) of front another part in key (4) of lock body (1); One lock shaft groove (6b) is arranged on the lock shaft (6), have in the lock body (1) and the tangent slit (8) of lock core (3), be inserted with inserted sheet (11) in this slit (8), the part of inserted sheet when locking (11) is embedded in the lock shaft groove (6b), the one group of inserted sheet pellet shot from a slingshot hole (10) that can insert pellet shot from a slingshot (14,15) is arranged on the inserted sheet (11), and this inserted sheet (11) also has an inserted sheet handle (11a) that is exposed at lock body (1) outside.

2, anti-theft lock for bicycle according to claim 1 is characterized in that: the rear end of lock shaft (6) has convex shoulder to be with lock shaft spring (17) on it.

3, anti-theft lock for bicycle according to claim 1 is characterized in that: inserted sheet transverse arm (11b) is arranged at the top of inserted sheet (11), is with inserted sheet spring (12) on this inserted sheet transverse arm (11b).

4, anti-theft lock for bicycle according to claim 1 is characterized in that: lock body (1) is synthesized with rear locking (1b) by preceding lock body (1a) and is connected fastening by attachment screw (7).

5, anti-theft lock for bicycle according to claim 4 is characterized in that: preceding lock body (1a) and rear locking (1b) are located by alignment pin (9).

6, according to the described anti-theft lock for bicycle of arbitrary claim in the claim 1 to 5, it is characterized in that: lock marble hole (15a) is a blind hole.

Images