JP3503102B2 - Bicycle handle locking device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device for locking a handle of a bicycle at a required angle with respect to a frame.

[0002]

Conventionally, a handlebar locking device for a bicycle has a locking rod fixed to the handlebar side.
The locking rod fixed to the head pipe side is connected to the locking rod and the locking rod by the locking rod or a movable pin provided on the locking rod, and the handle is fixed at a fixed angle with respect to the frame. Many are fixed to.

Therefore, in order to lock the handle lock device, a lock penetrating the movable pin is connected.

The present invention has been made for the purpose of eliminating the above-mentioned drawbacks, and in consideration of productivity, it is simple and
In addition to a structure that is robust and easy to assemble, it is intended to provide a vehicle that ensures traveling safety.

[0005]

[Means for Solving the Problems] A peripheral edge of an upper one fixed to an upper end of a head pipe and a part of its outer edge are extended in a square shape or the like.
Lengthen and extend the pedestal part, and install the bottom surface corresponding to the pedestal part.
Attached by suitable means to only a head lock body, the receiving
On the head lock body that corresponds to the rectangular shape of the platform, install the cylinder lock horizontally and at the required angle.
If you deploy it locally, you can insert the lock key from the outside
Both the operating projection to the rear end pivotably to be come provided integrally
However, the lock release spring installed on the head lock body
Is always urged to move in the direction opposite to the axis of the head pipe.
A stopper is installed to slide once, and this stopper
-The connecting part provided on the rear and the operation protrusion on the rear end of the cylinder lock
The front fork stem with a ball push, and
After pressing the ring for smooth bearing, set the lock gear to the front
It is fitted to the stem and is provided on the inner diameter surface of this lock gear.
Front part key by fitting it into the keyway provided on the front fork stem.
It is connected to the fork stem, and its connection part and required angle
Open the key groove on the inner diameter surface of the moved lock gear,
A detent key that biases the keyway in the axial direction with a leaf spring.
The front fork stem.
The lock gear and front fork
Doubly connect the stem, and on the peripheral surface of the lock gear,
A lock that engages with the stopper provided on the head lock body.
A bicycle handlebar locking device, characterized in that a groove is provided for each required angle to selectively engage the handlebar, and the handlebar is locked to the frame from a straight forward facing state to a bent rearward facing state by selecting an angle. It is in.

The stopper is divided into an engaging portion and a linking base portion.
The head lock body and the link base are
With the release spring, the engaging part is
With a straightening spring interposed, the engagement part is maintained at the required length and
While engaging, it receives pressure and slides in the adjustment direction,
And it is automatically extended so that it can be engaged with the lock gear.
Is also good .

The lock gear is attached to the front fork stem.
After mating and locking, mating with the front fork stem,
The outer edge of the cover that is bent downward
Cover the outer cover of the upward locking collar of the doodlock body, and then
A middle nut and a screw for screwing the bar onto the front fork stem from above.
It may also be tightened with a press nut.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A peripheral portion of an upper one fixed to an upper end of a head pipe and a part of its outer edge are extended in a rectangular shape to extend a pedestal portion, and a bottom surface is provided correspondingly to the pedestal portion. A head lock body is attached by screwing , and a cylinder lock is arranged laterally and rotatably at a required angle on the head lock body corresponding to a portion of the pedestal portion that is provided in a square shape,
The lock key can be inserted from the outside, and the operation protrusion is integrally provided on the rear end to make it rotatable, and it is always urged by the lock release spring provided in the head lock body to keep the axial center of the head pipe. The stopper is divided into the engaging part and the linking base part so that it slides in the direction opposite to
However, the lock is released between the head lock body and the linkage base.
Engagement adjustment spring that engages the engaging part with the base part via the spring
To engage the lock gear while maintaining the required length of the engaging part.
And slide in the adjustment direction under pressure and
Provided to be dynamically extendable and engageable with the lock gear, the linkage portion provided on the stopper and the operation protrusion at the rear end of the cylinder lock are linked, and a ball push is screwed onto the front fork stem,
After pushing the bearing and bearing smoothly, fit the lock gear to the front fork stem, and fit the convex key provided on the inner diameter surface of this lock gear to the key groove provided on the front fork stem to connect with the front fork stem. At the same time, a key groove is opened on the inner diameter surface of the lock gear at the position where it has moved a required angle with the connecting part, and a detent key that biases in the axial direction by a leaf spring is housed in the key groove. To the lock hole opened in the front fork stem, double connect the lock gear and the front fork stem, and then
Mate and fold down the cover that connects to the lock gear.
The outer edge is separated from the upper collar of the head lock body by the lid.
Screw the cover onto the front fork stem from above.
Tighten with a middle nut and a press nut , and a lock groove that engages with a stopper provided in the head lock body is provided on the peripheral surface of the lock gear at every required angle, and selectively engages to make the handle linearly forward with respect to the frame. From the state,
A handlebar locking device for a bicycle, characterized by being locked by selecting an angle up to a bent rearward state.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A bicycle handlebar locking device according to the present invention will now be described with reference to the drawings showing an embodiment of the present invention. A peripheral edge of an upper one 2 fixed to an upper end of a head pipe 1 and a part of the outer edge thereof are rectangularly extended. The base portion 2a is extended, a screw receiving hole 3 is provided at a required position in the vicinity of an outer edge of the base portion 2a, and a head lock main body 4 provided corresponding to the bottom surface thereof is provided with a screw 5.
It is attached to the upper surface by.

A cylinder lock accommodation hole 4a is provided in the head lock body 4 corresponding to the rectangular portion 2a1 provided in the rectangular shape of the pedestal portion 2a, and a cylinder lock 6 which is an example of a locking means is provided sideways and at a required angle. It is rotatably arranged, the front end of the cylinder lock 6 is exposed on the outer surface of the head lock body 4, and the lock key 7 can be inserted from the outside.
An operation protrusion 8 which is an example of the operation means of the lock means is integrally provided at the rear end and is rotatable.

A stopper 9 that slides in the axial direction of the head pipe 1 by means of an operating projection 8 which is an example of the locking means is provided in the head lock main body 4, and the link portion 10 provided on the stopper 9 and the above-mentioned structure. The operation protrusion 8 of the cylinder lock 6 is linked.

[0012] In the first embodiment shown in FIG. 10, the stopper 9 is entirely shows an integrated head lock body 4
Between the stopper and the stopper 9, an expansion type lock release spring 11 is provided.
The stopper 9 is always urged so as to move to the outside opposite to the axial center of the head pipe 1 by interposing.

The stopper 9 shown in FIGS. 12, 13 and 14 is the second embodiment, and is the engaging portion 9a and the linking base portion 9b.
The head lock body 4 and the base 9 are linked to each other.
An expansion-type lock releasing spring 11 is interposed between b, and an engagement-type engaging adjustment spring 12 is interposed between the engaging portion 9a and the linking base 9b to maintain the engaging portion 9a at a required length. Are engaged with each other, slide in the adjustment direction under pressure, and automatically return to engage with each other.

In the engaging portion 9a, 9a1 is a slide guide groove, 9a2 is a slide restricting groove, and 9a3 is an adjusting spring.
The receiving wall surface at the front end , 9a4 is a slide connecting bottom surface. Further, in the linking base portion 9b, 9b1 is an upper connecting surface portion forming a linking portion 10 for fitting and connecting the operating projection 8 of the cylinder lock 6, 9b2 is the same lower connecting surface portion, and 9b3 is an open bar.
D The receiving wall at the rear end , 9b4 is the front slide guide, 9b5
Is a receiving wall surface at the rear end of the adjusting spring , 9b6 is an upper surface of the rear slide guide, and 9b7 is a slide restricting protrusion.

After the ball push 14 is screwed into the front fork stem 13 and the bearing 15 is pushed to smoothly bear the bearing, the lock gear 16 is fitted into the front fork stem 13 and the convex key provided on the inner diameter surface of the lock gear 16. 16a is fitted into the key groove 13a provided in the front fork stem 13 to be coupled with the front fork stem 13, and 90
The key groove 17 is formed on the inner diameter surface of the lock gear 16 at the position where
And a detent key 19 biased in the axial direction by a leaf spring 18 is housed in the key groove 17 of the detent key 1.
Lock hole 2 with front surface of 9 open to front fork stem 13
The lock gear 16 and the front fork stem 13 are doubly connected to each other.

FIGS. 15 and 16 are detailed views of the detent key 19, wherein the U-shaped groove 19a formed on the back surface of the detent key 19 is provided with the front half bent portion 18a of the leaf spring 18. The leaf spring 18 is fixed by fitting the leaf spring 18 by exerting a spring pressure by extension, and the rear half expanded portion 18b of the leaf spring 18 is curved to house the detent key 19 in the key groove 17 of the lock gear 16, and As described above, the engaging portion 19b on the front surface of the detent key 19 is fitted into the lock hole 20 opened in the front fork stem 13, and the lock gear 16 and the front fork stem 13 are doubly coupled. Further, in the key groove 17 of the lock gear 16, the spacer 2 is provided on the back surface of the rotation stopping key 19.
It is also possible to insert 1 from above and lock the rotation stop key 19.

[0017] On the peripheral surface of the lock gear 16, the lock groove 22 to be engaged with the stopper 9 engaged selectively engaged provided the required angle each, the head pipe 1 the handle 23, i.e., relative to the frame (not shown) Select the angle from the straight forward state to the bent backward state and lock.

As a head lock safety mechanism, a required angle, 9 in the embodiment, is provided on the outer periphery of the cylinder lock 6 near the front end.
The locking lock groove 24 and the unlocking lock groove 25 are provided by being shifted by 0 degree and are provided in the head lock main body 4, and the upper surface of the head lock main body 4 is urged by the action of the safety lock spring 26 to protrude. A button 27 is provided, and a bent portion 28a at one end is fitted in the push button 27 in a direction transverse to the operating direction to integrally connect the safety lock rod 28. The locking engagement ends 28b are provided in the opposite direction to the operation direction, and are provided so as to be inserted into the locking engagement grooves 24 and the unlocking engagement grooves 25 of the corresponding cylinder lock 6 so as to be locked.

As shown in FIG. 4, the head lock body 4 has a push button front half accommodating portion 4b1 for accommodating the front half portion of the push button 27 and a safety lock connected to the push button 27. Push button safety lock rod accommodating portion 4 for accommodating the rod 28
b2 is provided.

Similarly, in the head lock main body 4, as shown in FIGS. 4 and 5, the push button latter half accommodating portion 4b3 for accommodating the latter half of the push button 27 and the safety connecting to the push button 27 are provided. A spring accommodating receiving portion 4b4 for accommodating and supporting the lock spring 26 is provided.

Similarly, the head lock main body 4 is provided with a cylinder lock accommodating hole 4a for arranging the cylinder lock 6 laterally and rotatably by a required angle, as shown in FIGS. 4, 5 and 6. It is provided. Reference numeral 6a denotes a lock display portion provided on the outer peripheral surface of the cylinder lock 6, which displays the head lock state of the handle 23 when it faces the window 4c of the head lock body 4.

As described above, after the lock gear 16 is fitted and locked to the front fork stem 13, the cover 29 is fitted to the front fork stem 13 and the outer edge 29a of the cover 29 bent downward is attached to the head lock body. 4 tsuba 30
Spaced tegmental outside of, and presses the nut 31 in screwed to the upper surface of the cover 29 to the front fork stem 13, further, after fitting the cage bracket 32 thereon, pressing nut 3
3 is screwed into the front fork stem 13 and the whole is tightened.

Since the bicycle handlebar lock device of the present invention is constructed as described above, the lock release spring 11 is provided.
Due to the action, the stopper 9 is always the lock gear 1 as a whole.
6 and the lock key 7 is inserted into the cylinder lock 6, the cylinder lock 6 and the head lock body 4 are disengaged from each other so that they can freely rotate, and then the push button 27 is pressed. When is pushed, the safety lock rod 28 is pushed down so that its insertion locking end 28b is disengaged from the locking locking groove 24 of the cylinder lock 6 of the locking means,
The safety lock with the cylinder lock 6 is released and becomes free, and the stopper 9 moves the connecting surface from the upper connecting surface 9b1 of the connecting portion 10 to the lower connecting surface 9b2 of the operating protrusion 8 of the cylinder lock 6, The cylinder lock 6 is rotated through the operation protrusion 8 and moved in the direction away from the lock gear 16 to release the handle lock with the lock groove 22 of the lock gear 16. Then, after confirming whether the cylinder lock 6 is rotated to the end of the open side of the cylinder lock 6 by holding the lock key 7, the safety lock rod 28 is returned by the action of the safety lock spring 26 when the push button 27 is released, and the safety lock rod 28 is inserted. Locking end 28
The lock b is engaged with the unlocking locking groove 25 of the corresponding cylinder lock 6 to lock the cylinder lock 6 with the lock key 7 inserted.

Therefore, as shown in FIG. 14, the stopper 9 is maintained at the position moved to the open side by the operation protrusion 8 which is the operation means of the cylinder lock 6 of the lock means, and does not move to the handle lock side. In this state, although not shown, the lock key 7 does not come off.

Next, In its locked Nitsu, depress the safety lock rod 28 which engages the lock cylinder 6 of the locking means press the push button 27 downward, the opening of the cylinder lock 6 the insertion locking end 28b The lock key 7 is disengaged from the lock locking groove 25, and at the same time, the lock key 7 is rotated counterclockwise in the embodiment to rotate the cylinder lock 6, and the operation protrusion 8 which is the operation means of the cylinder lock 6 is rotated to rotate the stopper 9. The connecting surface and the lock releasing spring 11 are compressed and moved from the lower connecting surface portion 9b2 of the connecting portion 10 to the upper connecting surface portion 9b1 to move the stopper 9. At this time, if the tip of the stopper 9 does not coincide with the lock groove 22 of the lock gear 16, the engagement portion 9a is stopped at the position where the outer diameter of the lock gear 16 is reached, so that the engagement adjustment spring 12 is compressed and linked. Cylinder lock 6 by moving the base 9b
Can be rotated to a required locking position, and when the finger is released from the push button 27 to raise the safety locking rod 28, the insertion locking end 28b thereof is fitted into the locking locking groove 24 of the cylinder lock 6. The cylinder lock 6 can be safely locked with respect to the head lock body 4 with the tip of the stopper 9 inserted and not fitted into the lock groove 22 of the lock gear 16. Then, when the handle 23 is turned slightly to the right or left, the lock gear 16 is rotated and its lock groove 2
When the tip of the stopper 9 opposes the stopper 2, only the engaging portion 9a is pushed out by the action of the adjusting engagement spring 12, and the lock groove 22
And lock gear 16 is stopped. Thus,
The handle 23 becomes a traveling lock with respect to the frame, and the handle cannot be operated. Note that, although not shown, lock key 7 is prevented escape from shea <br/> Linder lock 6 by the internal mechanism of the cylinder lock 6.

[0026]

[Effect of the Invention] bicycle handle lock device according to the present invention, as described above, because it is shall attach the head lock body to the one on which is fixed to the upper end of the head pipe, the upper
One and the head lock body can be processed separately and manufactured.
Making use of the characteristics of each member to reduce manufacturing costs,
It is possible to secure the strength of the material. In addition, the assembly
In the vertical process, the head lock body is
In a well-balanced area on the entire surface corresponding to each other.
It can be screwed in place, making the whole robust
be able to.

The bicycle handlebar lock of the present invention
The device is mounted on the front fork stem with a ball push,
The lock gear to the front fork.
Convex part fitted on the stem and provided on the inner diameter surface of this lock gear
Align the key with the keyway provided on the front fork stem, and
While connecting with the oak stem,
Open the key groove on the inner diameter surface of the lock gear at the moved position, and
Detent key that urges the key groove in the axial direction with a leaf spring
The front fork stem.
Fits in the open lock hole, and lock gear and front forks
Since it becomes engaged binding to Temu doubly assembly orderly rows
In addition, it is robust and is installed on the peripheral surface of the lock gear.
The position of the lock groove can be determined in advance.
Accurate correspondence between the groove and the stopper that engages with it
Can be made.

Also, the bicycle handlebar lock of the present invention
The device is provided with a stopper on the head lock body, which is always slid by a spring in a direction opposite to the axis of the head pipe, and requires an operating means such as an operating protrusion provided on a cylinder lock by inserting a lock key from the outside. The stopper is always separated from the lock gear because it is rotatably provided at an angle, and the operation means and the link portion of the stopper are linked and selectively engaged with the lock groove of the lock gear fitted and locked to the front fork. As described above, even if an abnormality such as an operation error or a failure of the stopper locking means occurs, the stopper and the lock gear do not engage with each other, and safety during traveling can be ensured.

Also, the bicycle handlebar lock of the present invention
In the stopper, the stopper is urged by the engagement adjusting spring in the axial direction of the head pipe, and the engagement adjusting spring is compressed to be provided in the engaging portion that can be adjusted and moved. When the lock head pipe is moved in the axial direction, even if the tip of the engaging part does not match the lock groove of the lock gear and it cannot move by hitting the outer periphery, operate the lock key to rotate the operating means to adjust the engagement. by compressing the spring can operate the handle lock by moving the linkage portion of the stopper, one <br/>致slightly <br/> turning the handle lock grooves of the lock gear to the engaging portion of the stopper By doing so, the engagement portion is automatically fitted by the action of the engagement adjustment spring, and the handle lock operation is easily completed.

The bicycle handlebar lock of the present invention
Device, because to this by providing a Kaitomemizo the outer circumference of the cylinder lock are engaged safer lock rod to secure Rocks purine grayed, without being pushed back by the spring when the stopper is engaged with the lock gear , Safety while driving is secured.

Bicycle handle lock device of the present invention
As mentioned above, the structure is simple, robust and easy to assemble.
It can improve productivity and ensure driving safety.
is there. Therefore, bicycle handlebar lock devices are widely used.
It has a great effect.

[Brief description of drawings]

FIG. 1 is a partially cutaway cross-sectional side view showing an entire bicycle handlebar locking device of the present invention.

FIG. 2 is likewise a plan view of a state in which an upper part is removed from the middle nut in FIG.

FIG. 3 is a plan view of a head lock body alone.

FIG. 4 is a sectional view of a part of the same taken along line AA of FIG.

FIG. 5 is a sectional view of a part of the same taken along line BB of FIG.

6 is an enlarged cross-sectional view of a part of the same taken along the line CC of FIG.

FIG. 7 is a plan view of the upper one unit to which the head lock main body is attached.

FIG. 8 is a plan view of a lock gear alone.

FIG. 9 is likewise a sectional view taken along the line D-D in FIG. 8.

[10] In the first embodiment linkage portion of the stopper is formed integrally with the engaging portion is a plan view illustrating an engagement connecting state between the operating projection of the connecting portion and the cylinder lock.

[11] Also, in the first embodiment, is a side view illustrating an engagement connecting state between the operating projection of the connecting portion and the cylinder lock.

FIG. 12 is a plan view for explaining an engagement connection state between the linkage base portion and the operation protrusion of the cylinder lock in the second embodiment in which the stopper is divided into the engagement portion and the linkage base portion.

FIG. 13 is a side view for explaining an engagement connection state between the linkage base portion and the operation protrusion of the cylinder lock in the locked state in the second embodiment in which the stopper is divided into the engagement portion and the linkage base portion. .

FIG. 14 is a side view for explaining an engagement connection state between the linkage base portion and the operation protrusion of the cylinder lock in the unlocked state.

FIG. 15 is a perspective view from the upper left front of the rotation stop key and the leaf spring housed in the key groove of the lock gear and fitted into the engagement hole of the front fork stem.

FIG. 16 is likewise a perspective view from the upper left rear of the rotation stopping key alone.

FIG. 17 is a perspective view from the upper right front with the stopper of the second embodiment disassembled.

FIG. 18 is likewise a perspective view from the lower left rear in the disassembled state.

FIG. 19 is an example of a safety lock rod that maintains the cylinder lock in the locked state or the unlocked state when the stoppers of the first and second embodiments are in the locked state and the unlocked state of the cylinder lock. It is an enlarged explanatory view showing an example.

FIG. 20 is a partial cross-sectional explanatory view showing the connection structure of the push button and the safety lock rod in the safety lock rod.

FIG. 21 is also an exploded perspective view showing an embodiment of the bicycle handlebar locking device of the present invention.

FIG. 22 is a perspective view of an upper portion of a front fork stem used in the bicycle handlebar lock device of the present invention.

[Explanation of symbols]

1 head pipe 2 upper one 2a pedestal 2a1 square portion 3 screw receiving hole 4 head lock body 4a cylinder lock accommodating hole 4b1 push button first half accommodating portion 4b2 push button safety lock stick accommodating portion 4b3 push button latter half accommodating portion 4b4 spring accommodating receptacle Part 4c Window 4d Screw screw hole 5 Screw 6 Cylinder lock 6a Lock display part 7 Lock key 8 Operation protrusion 9 Stopper 9a Engagement part 9b Linkage base 9a1 Slide guide groove 9a2 Slide restriction groove 9a3 Adjusting spring front wall 9a4 Slide connection Bottom surface 9b1 Upper connecting surface portion 9b2 Lower connecting surface portion 9b3 Opening spring rear end receiving wall surface 9b4 Front slide guide portion 9b5 Adjustment spring rear end receiving wall surface 9b6 Rear slide guide upper surface 9b7 Slide regulating projection 10 Linkage portion 11 Lock releasing spring 12 Engagement Adjustment spring 13 Front fork stem 13a Key Groove 14 Ball push 15 Bearing 16 Lock gear 16a Convex part key 17 Key groove 18 Leaf spring 18a First half bent part 18b Second half expanded part 19 Locking key 19a U-shaped groove 19b Engagement part 20 Lock hole 21 Spacer 22 Lock groove 23 Handle 24 Locking Locking Groove 25 Unlocking Locking Groove 26 Safety Lock Spring 27 Push Button 28 Safety Lock Rod 28a Bent 28b Insert Locking End 29 Cover 29a Outer Edge 30 Upward Collar 31 Middle Nut 32 Basket Bracket 33 Press Nut

─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hiroaki Yoshida 1-1-1, Shimomachiya, Chigasaki-shi, Kanagawa Miyata Industry Co., Ltd. (72) Inventor Tamaki Eguchi 1-19-19 Nishigahara, Kita-ku, Tokyo Stocks Company Hinomoto Locks (72) Inventor Masashi Otaka 1-19-19 Nishigahara, Kita-ku, Tokyo Stocks Hinomoto Locks (56) Bibliographic references Sho 64-52886 (JP, U) 54-118763 (JP, U) Actual development 54-30453 (JP, U) Actual development 54-23463 (JP, U) Actual development 1-115997 (JP, U) (58) Fields investigated (Int .Cl. ⁷ , DB name) B62H 5/06 B62K 19/32 E05B 71/00

Claims (3)

(57) [Claims] 1. An upper one fixed to the upper end of a head pipe.
Extend the peripheral edge and part of its outer edge into a square shape, etc.
Extend and attach the head lock body whose bottom surface is provided correspondingly to the pedestal part by appropriate means, and attach it to the pedestal part in a square shape, etc.
On the head lock body corresponding to the part to be provided , a cylinder lock is installed sideways and rotatably at the required angle.
It is possible to insert the lock key from one side and operate it at the rear end.
This was to be rotatable create projections integrally provided, Heddoro'
The lock release spring installed on the main body always urges
Slides in the direction opposite to the axis of the head pipe.
The stopper is installed like this, and the linkage provided on this stopper
Part and the operation protrusion at the rear end of the cylinder lock are linked, and the front flap
Screw the ball push onto the fork stem and push the bearing to
After bearing the bearing smoothly, fit the lock gear to the front fork stem
The projection key on the inner diameter surface of this lock gear.
Front fork stem by fitting into the keyway provided on the stem
While connecting with the
Open the keyway on the inner diameter surface of the lock gear and insert a plate in the keyway.
Hold a detent key that is biased in the axial direction by a spring, and
Attach the tip of the detent key of the
Fits into the hole and lock gear and front fork stem are doubled
The head lock book is attached to the peripheral surface of the lock gear.
The required angle of the lock groove that engages with the stopper deployed on the body
A bicycle handlebar locking device, wherein the handlebar locking device is provided for each and selectively engages to lock the handlebar with respect to the frame from a straight forward state to a bent rearward state by selecting an angle. 2. The stopper is provided at an engaging portion and a linkage base portion.
The head lock body and the linking base are
The engaging part is engaged with the linking base through the lock release spring.
Adjustable spring intervenes to maintain the required length of the engaging portion and lock gear
Slides in the adjustment direction when receiving pressure and engaging with
And automatically extend to engage with the lock gear.
The handlebar lock device for a bicycle according to claim 1, wherein the handlebar lock device is a bicycle. 3. The front fork stem is provided with the lock gear.
After fitting / locking to , fit it to the front fork stem,
The outer edge of the cover that connects to the lock gear is bent downward.
Cover the head lock body upwards with a flange on the outside, and
Middle nut that screws the cover onto the front fork stem from above
The handlebar lock device for a bicycle according to claim 1 or 2, wherein the handlebar lock device is tightened with a holding nut .