CN2134955Y

CN2134955Y - Theft-proof locking mechanism for bicycle

Info

Publication number: CN2134955Y
Application number: CN 92211382
Authority: CN
Inventors: 付军生
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-03-12
Filing date: 1992-03-12
Publication date: 1993-06-02
Anticipated expiration: 2002-03-12

Abstract

The utility model discloses a theft-proof locking mechanism for bicycles, which is provided with a column-shaped night lock. The diameter of the night lock is corresponding to an inner diameter of a frame cross member, and the length is smaller than an inner diameter of a frame front standpipe. A lock core is arranged horizontally, and the upper side is provided with a groove longitudinal for a top reed set bar to be arranged. The front standpipe is provided with holes corresponding to the cross member. A locking head is fixedly arranged at the front end of the cross member in a built-in way. A key plughole corresponding to the lock core is arranged on one side of the cross member. The standpipe of a vehicle fork and the standpipe of a handle bar are provided with a vertical slot corresponding to an outside of a set bar after rotating. The vehicle fork and the handle bar are caused to be positioned after the set bar inserts the slot. A guiding function is lost, and the bicycles can not be pushed and ridden. So locking of the bicycles is realized. The mechanism is built-in, which is uneasily destroyed and has a fine safe theft-proof performance.

Description

Theft-proof locking mechanism for bicycle

The utility model belongs to the bike tech scope, relates to a kind of bicycle theft-prevention and locks mechanism.

The locking of existing bicycle, generally all be to adopt annular bicycle lock or chain bicycle lock locking trailing wheel, these two kinds of bicycle locks all are fitted outsides, the one, and destroyed easily, row robber person promptly can pry open bicycle, prize and ruin and the row robber poor safety performance with screwdriver, pliers etc.; The 2nd, row robber person can also mention implementation with bicycle rear, moves away from behind the scene picking lock again and steals car; The 3rd, the car owner as accidentally with key loss, must lock sled is bad, more renew lock, cause economic loss.

The purpose of this utility model provides a kind of built-in, with handlebar, car fork location, makes it to push away, rides, safe and reliable bicycle theft-prevention locking mechanism, to overcome the above-mentioned shortcoming of existing bicycle lock lock mode.

Task of the present utility model is finished with following scheme: a garden cylindricality ball lock head is arranged, and diameter is corresponding with the cross member of frame internal diameter, and length is less than preceding standpipe internal diameter, the lock core lateral arrangement, and upside is vertically slotted, installing top spring, locking bolt; The corresponding cross member of frame perforate of preceding standpipe, tapered end is loaded on the cross member of frame front end in built-in mode and fixes, and the corresponding lock core of crossbeam front end one side is opened key insertion hole; Car fork vertical tube and the handlebar vertical tube corresponding locking bolt fluting in back that rotates to an angle, locking bolt inserts handlebar, car fork location, loses guide function, and front-wheel deflection makes the bicycle can't pushing riding.

Fig. 1 is a front view of the present utility model, and Fig. 2 is a cutaway view.

Fig. 3 is the vehicle frame front end front view after spring lock takes out.

Fig. 4, Fig. 5 are the fluting scheme drawings of handlebar and car fork, and arrow is represented the dead ahead of car among the figure.

Below in conjunction with accompanying drawing the utility model is elaborated:

According to Fig. 1, shown in Figure 2,2 is spring locks among the figure, and lock body is the garden cylindricality, and the internal diameter of diameter and cross member of frame is corresponding, and after locking bolt stretched out, the overall length of lock was less than the internal diameter of vertical front frame pipe 6, lock core 3 lateral arrangement, and the upside of lock body is vertically slotted, installing locking bolt 4; Marble lock key is rotated in the corresponding cross member of frame perforate of vertical front frame pipe, allows locking bolt stretch out, withdraw from key after, this hole 5 of passing suitable for reading of standpipe 6 in the past is loaded on the front end of cross member of frame 1 in built-in mode, and plate washer 7 can be set in the rear end of tapered end.The corresponding lock core 3 of front end one side of crossbeam 1 is opened key insertion hole; Opposite side is opened screw 8, with the fixing spring lock of screw; After car wooden fork vertical tube 9 and handlebar vertical tube 10 rotated to an angle, the corresponding locking bolt that for example turns left after 45 ° was offered vertical slot, after locking bolt 4 inserts these vertical slots, can be with front fork and handlebar location, front-wheel deflection, forfeiture guide function, bicycle can not be carried out, more can not ride, thus the locking of realization bicycle.

The spring lock of the utility model lockout mechanism, can be produced by locksmithery, the vertical slot on hole on cross member of frame, the preceding standpipe and car fork vertical tube, the handlebar vertical tube can be by Bicycle Plant's preparative treatment, during installation, earlier the dress crossbeam front end suitable for reading of ball lock head the past standpipe is fixed, car fork and handlebar are installed again.

Lockout mechanism of the present utility model adopts built-in, be difficult for destroyed, by with handlebar, car fork location, can't rotary steering, realize locking, make bicycle can not carry out, more can not ride, the safe antitheft performance is good.If the car owner loses key accidentally, can pull down handlebar, car fork earlier, built-in spring lock is taken out, prepare new key, reinstall and get final product.If row robber person wants to steal car by this method, then need the long period, in general, row robber person does not have this crime time and condition.Therefore, this lockout mechanism is a kind of more satisfactory bicycle safe anti-theft locking mechanism.

Claims

A kind of bicycle theft-prevention locking mechanism is characterized in that having a garden shape ball lock head, and diameter is corresponding with the cross member of frame internal diameter, and length is less than the vertical front frame pipe internal diameter, the lock core lateral arrangement, and spring lock one side is vertically slotted, and installs top spring, locking bolt; The corresponding cross member of frame perforate of preceding standpipe, tapered end is loaded on the cross member of frame front end in built-in mode and fixes, and the corresponding lock core of crossbeam front end one side is opened a key insertion hole; Corresponding locking bolt was offered vertical slot after car fork vertical tube and handlebar vertical tube rotated to an angle.