CN2321687Y

CN2321687Y - Bicycle handlebar stem built-in lock

Info

Publication number: CN2321687Y
Application number: CN 98200117
Authority: CN
Inventors: 华志中
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-01-06
Filing date: 1998-01-06
Publication date: 1999-06-02
Anticipated expiration: 2008-01-06

Abstract

The utility model relates to a bicycle handlebar stem built-in lock. The entire mechanism is hidden in the vertical pipe of the bicycle front fork, only the keyhole is exposed in the middle of he handle bar, and the key is provided with an opening position, a locking preset position and a locking position; in the process of rotating the handle bar to a relatively large angle when at the locking preset position, a bolt straightly is inserted into the frame front pipe and enters frame cross member, which makes the front fork be positioned to have no means of running at the locking position; Because the utility model also alters the connection mode that the traditional front fork and the handle bar are in two sections type, if the utility model is opened illegally and forcibly, the model and external appearance must be destroyed, both common repair and modification have no means of restoring, thereby, the utility model raises anti-theft performance and effectively stops stealing.

Description

The bicycle headstock built-in lock

The utility model relates to technical field of bicycles, more particularly, relates to a kind of bicycle lock with higher reliability that is installed in bicycle headstock.

There is certain defective in the anti-theft feature of existing bicycle lock, as existing not enough in anti-sled, anti-saw, shearing resistance and the anti-performance of pounding.Though the existing built-in bicycle lock that proposes, it is to utilize built-in lock core to pull out as lock pin, or extrapolation one cover pin tumbler lock body is as lock pin, thereby pipe is connected as a single entity before making vertical tube of front fork and vehicle frame.When in operation rotating handlebar, owing to can not optionally find lockpin hole, this just makes quite clumsiness and inconvenient of whole operation process, and the lock pin with locking function still has outside the position is exposed to, so yet there is problem such as insufficient strength.The drawback of all kinds of bicycle lock maximums is that also the bicycle that lock is illegally opened there is no function effect, still can come into the market once more, makes the car stealer free from all inhibitions.

The purpose of this utility model is to provide a kind of bicycle headstock built-in lock, this bicycle headstock built-in lock can overcome the above-mentioned shortcoming of prior art, its lock body is through special design, can embed among the vertical tube of front fork of the transformation of the way, make it that back outward appearance is installed and only expose the key hole that rainhat is arranged in handlebar central authorities, when screw key with rotating in the process of handlebar angle, make the bicycle front fork location and can not travel during use; On the other hand, after lock was illegally opened by force, the bicycle front fork standpipe just was difficult to restore to the original state and be identified easily, and better safety is arranged.

The purpose of this utility model is to realize like this, construct a kind of bicycle headstock built-in lock and comprise the lock cylinder 10 that is embedded in through transformation of the way vertical tube of front fork 12 tops, place last locating rack 3 and following locating rack 7 in the lock body 10, be located at lock core 1 through transformation of the way front fork center of top, described lock core 1 with open position is arranged after corresponding key cooperates, the three kinds of states in locking presetting bit and locking position, and can cooperate by connecting rod 2 and radius stay 4 rotation interlocks, the drive spindles 6 inserted in the hollow cylinder locating bush 8 that the is located at lock body 10 bottoms eccentric rod by its underpart is rotated stir its movable end can pass the dead bolt 9 of managing 13 upper lock tongue holes before the vehicle frame.

Implement bicycle headstock built-in lock of the present utility model, in operation, have convenience, have infrangibility qualitatively, have significant in appearance than the bicycle lock of prior art.Key position is provided with open position, locking presetting bit and locking position.During locking, after the key hour hands go to the locking presetting bit by open position, left-hand rotates handlebar and makes in front-wheel and the process of vehicle body angle greater than 45 degree, built-in dead bolt just can automatically radially stretch into the dead bolt hole location that the preceding pipe of vehicle frame presets, key just can be rotated to the locking position, make the dead bolt hole of dead bolt pipe before vehicle frame axially enter cross member of frame, be positioned in the certain angle and can not cruising, but when unblanking the counter-rotation key to open position self-opening just.In destructive test, except that technical unlocking, when opening by force with other any way, all must destroy vertical tube of front fork earlier, because lock body of the present utility model is installed in this in the vertical tube of front fork of the transformation of the way, the caliber of its exsertion part and the pipe thread diameter that is connected with handlebar are different from the existing used specification of bicycle, and this just makes the car stealer be difficult to restore after reparation and repacking; In cruising and since key open position can not extract and the position very eye-catching, can be made into key, thereby guarantee that its sign effect is better with distinctive mark function.At the bicycle that runs into the novel standpipe of this employing, distortion is arranged or through repacking or when not being inserted with the distinctive mark key in its front fork and region of interest, be that this car of decidable is illegal, make the car stealer, use the stolen car person to have certain scruples, further improve the reliability of the safety precaution of lock.

In conjunction with the accompanying drawings and embodiments, further specify characteristics of the present utility model, in the accompanying drawing:

Fig. 1 is the structure cutaway view of bicycle headstock built-in lock of the present utility model.

Among the figure, the 1st, lock core, the 2nd, connecting rod, the 3rd, last locating rack, the 4th, radius stay, the 5th, spring frame, the 6th, drive spindle, the 7th, following locating rack, the 8th, locating bush, the 9th, dead bolt, the 10th, lock body, the 11st, rainhat, the 12nd, vertical tube of front fork, the 13rd, pipe before the vehicle frame, the 14th, cross member of frame.

In the drawings, the flat recess that connecting rod 2 inserts on the radius stay 4, pushing away on the spring of spring frame 5 under the effect, locating dowel pin slipped into the cross positioning groove of locating rack 3 bottoms when radius stay 4 rotated, being used for key is opening, locking presets with locking three positions and positions, when key by 90 ° of open position right-hand revolutions during to the locking presetting bit, drive spindle 6 is owing to be subjected to the preceding not corresponding retardance of dead bolt hole of managing on 13 of dead bolt 9 and vehicle frame, spring frame 5 is being moved on the right-hand revolution under the effect of locating dowel pin on obform guide rail and the drive spindle, and compression spring makes spring frame 3 produce the downward power of inhour rotation, at this moment, rotating handlebar makes angle between bicycle front-wheel and the vehicle body greater than 45 °, in case dead bolt 9 is corresponding with the dead bolt hole on the preceding pipe 13 of vehicle frame, the eccentric rod of drive spindle 6 bottoms just can make dead bolt 9 stretch into the dead bolt hole location that the preceding pipe of vehicle frame presets automatically, but key just 90 ° of right-hand revolutions to the locking position, make dead bolt 9 before vehicle frame, manage 13 and enter cross member of frame 14, need only the key anti-clockwise rotation to open position during unlatching.

Lock body 10 is cylindrical, and the mounting hole of locating bush 8 is arranged at the bottom, and the one word insertion groove axial and key in its hole is 45 during installation.Lock core 1 and upper and lower locating rack 3 and 7 and lock body 10 close fits and the location.The obform guide rail of spring frame 5 bottoms is and intersects correspondingly, and the locating dowel pin on radius stay 4 and spring frame 5 and drive spindle 6 tops is position, two work of stretching out.The locating dowel pin of drive spindle 6 bottoms only stretches out a job, and does 180 ° of rotations by the L shaped step limits drive spindle on the following locating rack 76.

Locating bush 8 is a hollow cylinder, on the patchhole of a drive spindle 6 is arranged, dead bolt 9 is that diameter is 10 millimeters a steel column, and a driver slot and positioning step are radially arranged.During installation, push away on the drive spindle 6, key matches, and the following locating dowel pin on the drive spindle 6 is placed down on the L shaped step of locating rack 7, just this lock body 10 can be pushed vertical tube of front fork 12, and the alignment mounting hole can be packed into.

Vertical tube of front fork 12 mainly is to have changed traditional two-segment type method of attachment, directly be lengthened to handlebar requirement height, the direction of its handlebar and height adjustment are substituted by the connection pipe thread of handlebar vertical tube of front fork 12, the mounting hole of locating bush 8 is set, corresponding when making the handlebar left-hand rotate 45 ° with pipe 13 dead bolt holes that preset before the vehicle frame.Spraying plating increasing one joint diameter processes bearing and compresses screw thread, can push screw thread with pipe and hold-down nut before the vehicle frame of packing into and be as the criterion with the upper part.

Claims

1. bicycle headstock built-in lock, it is characterized in that comprising the lock cylinder 10 that is embedded in through transformation of the way vertical tube of front fork 12 tops, last locating rack 3 and following locating rack 7 and be located at through changing a social system the lock core 1 of front fork center of top, described lock core 1 with open position, three kinds of states of locking presetting bit and locking position are arranged after corresponding key cooperates, and can cooperate by connecting rod 2 and radius stay 4 rotation interlocks, the drive spindles of being inserted in the hollow cylinder locating bush 8 that is located at lock body 10 bottoms 6 can be rotated stir its movable dead bolt 9 can pass the dead bolt hole of managing before the vehicle frame on 13 by the eccentric rod of its underpart.

2. bicycle headstock built-in lock according to claim 1 is characterized in that, described vertical tube of front fork 10 maintains an equal level with the handlebar height, is provided with the mounting hole of locating bush 8 on vertical tube of front fork, and the spraying plating dilated diameter processes bearing and compresses screw thread.

3. bicycle headstock built-in lock according to claim 1, it is characterized in that, one end of connecting rod 2 can insert the flat recess on the radius stay 4, and the locating dowel pin of drive spindle 6 bottoms only stretches out a job, and does 180 ° of rotations by the L shaped step limits drive spindle on the following locating rack 76.

4. bicycle headstock built-in lock according to claim 1, it is characterized in that, described lock body 10 is cylindrical, its underpart is provided with the mounting hole of locating bush 8, the word insertion groove with key that turns in its hole is 45, described lock core 1 and upper and lower locating rack 3 and 7 and lock body 10 close fits and location, described lock body 10 is embedded in described vertical tube of front fork 10 backs and is connected as one by locating bush 8 and dead bolt 9.

5. bicycle headstock built-in lock according to claim 1, it is characterized in that, last locating rack 3 in the described lock body 10 is provided with the cross positioning groove, crank-guide way 41, locating dowel pin 42 and sliding tray 43 are arranged on the radius stay 4, locating dowel pin 51 and spring 52 and obform guide rail 53 are arranged on the spring frame 5, and described locating rack 7 down has a L shaped step, and a hollow cylinder locating bush 8 is arranged at lock body 10 bottoms, on the patchhole of a drive spindle 6 is arranged, driver slot 91 and positioning step 92 are arranged on the dead bolt 9.

6. bicycle headstock built-in lock according to claim 1, it is characterized in that, pushing away on the spring of spring frame 5 under the effect, locating dowel pin slipped into the cross positioning groove of locating rack 3 bottoms when radius stay 4 rotated, being used for key is opening, locking presets with locking three positions and positions, when key by 90 ° of open position right-hand revolutions during to the locking presetting bit, drive spindle 6 is owing to be subjected to the preceding not corresponding retardance of dead bolt hole of managing on 13 of dead bolt 9 and vehicle frame, spring frame 5 is being moved on the right-hand revolution under the effect of obform guide rail, and compression spring makes spring 5 produce the downward power of inhour rotation, at this moment, rotating handlebar makes angle between bicycle front-wheel and the vehicle body greater than 45 °, in case dead bolt 9 is corresponding with the dead bolt hole on the preceding pipe 13 of vehicle frame, the pipe dead bolt hole was located before the eccentric rod of drive spindle 6 bottoms just can make dead bolt 9 stretch into vehicle frame automatically, but key just 90 ° of right-hand revolutions to the locking position, make dead bolt 9 before vehicle frame, manage 13 and enter cross member of frame 14, need only the key anti-clockwise rotation to open position during unlatching.

7. bicycle headstock built-in lock according to claim 1, it is characterized in that, described dead bolt 9 is that diameter is 10 millimeters a steel column, one driver slot and positioning step are radially arranged, during installation, push away on the drive spindle 6, key matches, following locating dowel pin on the drive spindle 6 is placed down on the L shaped step of locating rack 7, just this lock body 10 can be pushed vertical tube of front fork 12, the alignment mounting hole can be packed into.