JP3069861B1 - Bicycle handle locking device - Google Patents

Abstract

An upward tooth is formed on the entire circumference of an upper end of an upper head one fixed to a head pipe, and an upward tooth is formed on an entire circumference of a lower end of a fork stem inserted into the head pipe.
Movable top member 6 having downward teeth 18 meshed with
A spring member 8 for pressing the lower end surface of the movable top member 6 against the upper end surface of the upper head one 3 is inserted, and a case member 14 covering the outer periphery of the movable top member 6 is rotatably inserted. A pin 21 is formed on the outer periphery, and an inner peripheral surface of the case member 14 is connected to the high region 22 and the low region 23 along the rotation direction thereof, and an upper escape passage 24 is formed at an end of the low region 23. A bicycle handle lock device in which a guide groove 25 for a pin 21 provided with a groove is formed. [Effect] When the case member 14 provided on the upper head one 3 is rotated to a predetermined position, the handle lock and the release of the handle lock can be performed, and when a predetermined torque or more is applied to the handle in the locked state. , The handle lock status is temporarily released,
There is no danger of the lock device itself and the vehicle body being damaged or the occupant being injured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handle lock device for preventing a vehicle from tipping over due to natural rotation of a handle while a bicycle is parked.

[0002]

2. Description of the Related Art Bicycles have a structural disadvantage that the handle is often turned right or left when it comes into contact with the handle or the front wheel when parked, and it is easy for the handle to fall to the turning side of the handle due to the impact or the like. Have.

[0003] These bicycles are particularly liable to fall over when a load is stored in a load in a bicycle having a load in front of a handlebar.

[0004] In order to prevent the bicycle from tipping over due to the turning of the steering wheel, various devices have hitherto been devised. For example, there has been proposed a locking device or the like in which a handle is completely fixed to prevent theft of a vehicle body.

However, in this device, the handle is completely fixed in the locked state, so that when the bicycle falls, a large impact force acts, and the locking device itself and the vehicle body are often damaged. There is a danger that the occupant may be injured.

On the other hand, a rack having a gentle slope on the outer periphery of the lower head one and a flat portion at the valley and the top is formed, and a bracket is attached to the shoulder of the fork.
A fulcrum pin is implanted in the center of the bracket, and a stopper piece having a stopper that engages with the rack is provided at the tip of the fulcrum pin. The stopper piece is engaged with the rack by rotating the lever, or the stopper piece is engaged. There has been proposed a bicycle handle lock device in which engagement is released (Utility Model Registration No. 2515270).

[0007]

However, in this device, in the locked state, the stopper is only engaged with a part of the rack formed on the outer periphery of the lower head one. There is a disadvantage that the lock is released even when a load is applied.

Further, in this device, since the lock operation lever is provided on the lower head one, the posture must be bent during the lock operation, and there is a disadvantage that the lock operation cannot be performed in an easy posture.

[0009]

SUMMARY OF THE INVENTION In view of the above circumstances, according to the present invention, upward teeth are formed around the entire upper end of an upper head one fixed to a head pipe, and the lower end of a fork stem inserted into the head pipe is formed. A movable top member formed with downward teeth meshed with the upward teeth on the entire circumference, a spring member for pressing a lower end surface of the movable top member against an upper end surface of the upper head one is inserted, and an outer periphery of the movable top member is further inserted. A rotatable case member is inserted around the movable member, and a pin is formed on the outer periphery of the movable piece. The inner peripheral surface of the case member is connected to the high region and the low region along the direction of rotation, and At the end of the area, a guide groove for the pin is formed having an upward escape passage, and when the pin is in the high area, the downward teeth do not mesh with the upward teeth of the upper head one and the handle locks. In the unlocked state, when the pin is in the low region, the downward teeth mesh with the upward teeth to lock the handle, and in the locked state, when the torque greater than a predetermined value is applied to the handle, the pin is reset. The present invention proposes a handlebar locking device for a bicycle in which a locked state of a handlebar is temporarily released by being guided to an upward escape passage.

[0010]

That is, according to the present invention, when the pin is located in the high region of the guide groove due to the rotational position of the case member,
The movable piece member is located at a position where the downward teeth formed on the lower end thereof are separated from the upward teeth formed on the upper end of the upper head one, that is, the handle lock is released.

When the pin is in the lower region of the guide groove due to the rotational position of the case member, the movable top member is at a position where it meshes with the downward teeth formed at the lower end thereof and the upward teeth formed at the upper end of the upper head one. That is, the steering wheel is locked.

Therefore, in the present invention, the handle can be locked and the handle can be unlocked simply by rotating the case member to a predetermined position. In addition, since the case member is on the upper head one, the posture is extremely easy. Can be used to lock and release the handle.

Further, in the present invention, the handle lock is performed by engaging the upward teeth formed on the entire circumference of the upper end surface of the upper head one with the downward teeth formed on the entire circumference of the lower end of the movable top member. Can be done.

On the other hand, when the handle is further rotated in the handle locked state or when a torque exceeding a predetermined value is applied to the handle, such as when the bicycle falls down,
A large impact force is applied to the movable top member. At this time, in this invention, the pin formed on the movable top member is guided to the escape passage above the guide groove against the bias of the spring member, and the handle is locked. Cancel the status temporarily.

Therefore, according to the present invention, even when the handle is further rotated in the locked state or when a torque exceeding a predetermined value is applied to the handle such as when the bicycle falls down, the locking device itself and the vehicle body may be damaged. There is no danger of occupant injury.

In the temporary release state of the handle lock, when the downward teeth and the upward teeth are engaged, the pin is transferred to the low area of the guide groove by the bias of the spring member, and the handle is returned to the above-described handle locked state.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. 1 is a head pipe, 2 is a fork stem inserted into the head pipe 1, and 3 is an upper head one fixed to the head pipe 1. Upward teeth 4 are formed all around the upper end of the upper head one 3, and an upper ball pusher 5 is screwed to the fork stem 2.

The Sarah washer 8 and the cam 9 are inserted into the fork stem 2 through the movable top member 6 and the spencers 7 and 7, and the core 10 is screwed through the insertion holes to be provided below the core 10. The movable piece member 6, the spencers 7, 7, the Sarawasher 8, and the cam 9 are urged upward by the elasticity of the ring spring 11 provided.

On the other hand, the movable top member 6 is
The case member 13 that covers the outer periphery of the
Is fitted with a stopper plate 14 having a notch 14a formed on the periphery thereof, and further, a C ring 15 and a cage mounting bracket 16 are inserted therethrough, and a nut 17 is screwed and fixed.

The movable top member 6 is constituted by a gear portion 19 having downward teeth 18 meshing with the upward teeth 4 formed on the entire lower end surface thereof, the spencers 7, 7, the washer 8, and the cam receiving portion 20. A pin 21 is provided on the outer periphery thereof.

Further, the inner peripheral surface of the case member 13 is connected to the high region 22 and the low region
A guide groove 25 of the pin 21 having an upward escape passage 24 is formed at an end of the guide member 23, and a guide protrusion 26 corresponding to the guide groove 25 is formed on an upper surface of the cam 9. Is formed with an engagement groove 27 of the guide projection 26.

In this embodiment, the guide groove 25 is formed by inserting a lid 28 having a high region 22, a low region 23 and an escape passage 24 at the lower end thereof along the inner peripheral surface of the case member 12.

An operation button 29 is provided on the periphery of the upper surface of the case member 13, and the tip of the operation button 29 engages with the notch 14a of the stopper plate in the handle locked state and the unlocked state to engage with the case member 13. The protrusion 30 that regulates the rotation of is formed.

The operation button 29 has a return spring 33 interposed between the operation button 29 and the key unit 32 fixed by the key 31, so that the handle lock state and the unlock state can be reliably maintained by the elasticity of the return spring 33. Accordingly, to shift from the handle locked state to the unlocked state and vice versa, the operation button 29 is pressed to rotate the case member 13 in each direction.

Further, a stopper is provided on the peripheral edge of the upper surface of the case member 12 so that the case member 13 rotates within a predetermined range.
A notch groove 35 with which the stopper 34 is engaged is provided in a peripheral portion of the stopper plate 14 and the stopper plate 14.

In the above structure, the case member 13
When the pin 21 is in the high region 22 of the guide groove 25 due to the rotational position of the movable top member 6, the movable top member 6 rises accordingly, and the downward teeth 18 formed at the lower end of the movable top member 6 are at the upper end of the upper head one 3. It is located away from the formed upward teeth 4. That is, the handle lock is released [see FIG. 7 (a)].

Also, depending on the rotational position of the case member 13,
When the member 21 is in the low region 23 of the guide groove 25, the movable top member 6
The movable top member 6 is located at a position where the downward teeth 18 formed at the lower end of the movable top member 6 mesh with the upward teeth 4 formed at the upper end of the upper head one 3. That is, the steering wheel is locked (see FIG. 7B).

Accordingly, in the present invention, the handle lock and the release of the handle lock can be performed only by rotating the case member 13 to a predetermined position. In addition, since the case member 13 is on the upper head one 3, the handle member 13 is extremely high. The handle can be locked and released in an easy posture.

Further, in the present invention, since the upward teeth 4 formed on the entire periphery of the upper end surface of the upper head one 3 and the downward teeth 18 formed on the entire periphery of the lower end of the movable top member 6 engage with each other, the handle is locked. Handle lock can be performed.

On the other hand, when a torque greater than a predetermined value is applied to the handle in the handle locked state, a large load is also applied to the movable top member 6. At this time, the pin 21 formed on the movable top member 6 is Is guided to the upward escape passage 24 against the urging of the handle, and the locked state of the handle is temporarily released [see FIG. 7 (c)].

Therefore, in the present invention, even when the handle is further rotated in the locked state, or when a torque exceeding a predetermined value is applied to the handle such as when the bicycle falls down, the locking device itself and the vehicle body may be damaged. There is no danger of occupant injury.

In the temporary release state of the handle lock, when the downward teeth 18 and the upward teeth 4 mesh with each other, the pin 21 is moved to the low region 23 by the bias of the Sarawasher 8,
It is returned to the handle locked state.

[0033]

Therefore, according to the present invention, the handle lock and the release of the handle lock can be performed reliably and easily by rotating the case member provided on the upper head one to a predetermined position. If a torque greater than a predetermined value is applied to the steering wheel in the locked state, the steering wheel locked state is temporarily released.
There is no danger of the lock device itself and the vehicle body being damaged or the occupant being injured.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a side view showing an assembled state of the above.

FIG. 3 is a plan view showing the unlocked state of the handle.

FIG. 4 is a plan view showing the locked state of the handle.

5 is a sectional view taken along line AA in FIG.

FIG. 6 is a diagram illustrating a relationship between a pin of a movable top member and a guide groove formed on an inner peripheral surface of a case member.

FIG. 7 is a diagram illustrating a position of a pin of a movable top member in a guide groove and an engagement state of an upward tooth and a downward tooth.
(A) is a free state where the upward teeth and the downward teeth do not mesh, (b) is a locked state where the upward teeth and the downward teeth mesh, and (c) is a locked state where a load is further applied to the handle. Are shown respectively.

[Explanation of symbols]

 1 is a head pipe 2 is a fork stem 3 is an upper head one 4 is an upward tooth 5 is an upper ball push 6 is a movable top member 7 is a spencer 8 is a Sarawa washer 9 is a cam 10 is a metal core 11 is a ring spring 12 is a metal core Head 13 is a case member 14 is a stopper plate 14a is a cutout 15 is a C ring 16 is a cage mounting bracket 17 is a nut 18 is a downward tooth 19 is a gear part 20 is a receiving part 21 is a pin 22 is a high area 23 is a low area 24 Is the escape passage 25 is the guide groove 26 is the guide projection 27 is the engagement groove 28 is the lid 29 is the operation button 30 is the projection 31 is the key 32 is the key unit 33 is the return spring 34 is the stopper 35 is the notch groove

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Koichi Yamamuro 4056 Sakuradai, Nakatsu-sha, Aikawa-cho, Aiko-gun, Kanagawa Japan (56) References JP-A-3-45486 (JP, A) Japanese Utility Model 2 -80090 (JP, U) Utility model registration 2515270 (JP, Y2) Utility model registration 2549277 (JP, Y2) JP-B-56-48346 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB Name) B62H 5/02-5/06 B62K 21/18

Claims (2)

(57) [Claims] 1. An upper tooth is formed on an entire circumference of an upper end of an upper head one fixed to a head pipe, and a down tooth meshed with the upward tooth is formed on a lower end of a fork stem inserted into the head pipe. The formed movable top member, a spring member that presses the lower end surface of the movable top member against the upper end surface of the upper head one is inserted, and a case member that covers the outer periphery of the movable top member is further rotatably inserted.
A pin is formed on the outer periphery of the movable piece, and a high region and a low region are connected to the inner peripheral surface of the case member along the rotation direction, and an escape passage upward is provided at an end of the low region. A guide groove for the pin provided is formed, and when the pin is in the high region, the downward teeth do not mesh with the upward teeth of the upper head one, the handle is unlocked, and the pin is in the low region. Sometimes, the downward teeth mesh with the upward teeth to lock the handle, and in the locked state, when a torque greater than a predetermined value is applied to the handle, the pin is guided to an upward escape passage to lock the handle. A bicycle handle lock device, wherein the bicycle is temporarily released. 2. The apparatus according to claim 1, wherein the guide groove is formed by inserting a lid having a high area, a low area, and an escape passage at a lower end thereof along the inner peripheral surface of the case member.