JP2006062600A - Head fixing lock for bicycle having excessive load avoidance coupling locking body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a head fixing lock for bicycle having an excessive load avoidance coupling locking body. <P>SOLUTION: The head fixing lock for the bicycle having the excessive load avoidance coupling locking body, the excessive load avoidance coupling locking body is divided into an inside diameter body which is fixed and connected to a member with an inside diameter face being integrally connected and fixed to handle bars such as a front fork stem, and an outside diameter body with a projecting tooth or a recess being circumferentially provided on the outer circumferential surface, and a rotating resistance body of the required torque is interposed between the outer circumferential surface of the inside diameter body and the inside diameter face of the outside diameter body. The locking body is integrally arranged with the handle bars. The projecting tooth or the recess on the outer circumference corresponding to a lock pin arranged at the predetermined position on the frame side is engaged therewith. The inside diameter body is rotated against the excessive load not less than the predetermined torque from the handle bars, and the excessive load applied to the inside diameter body, the outside diameter body and the lock pin is avoided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a bicycle head fixing lock including an overload avoidance interlocking lock body.

Many proposals have been made on bicycle head locking tablets, for example, Japanese Utility Model Publication No. 54-23463. This patent applicant has also proposed Japanese Patent Application Laid-Open No. 11-5576.
The head fixing lock disclosed in Japanese Utility Model Laid-Open No. 54-23463 has a cylinder lock pin mounted on the side of the upper one provided with a large number of locking recesses on the periphery of the upper ball press. The front fork stem, which is fixed integrally with the upper ball press through the access hole, is locked. Next, in the bicycle head fixing lock disclosed in Japanese Patent Application Laid-Open No. 11-5576, a lock gear is provided on the front fork stem, with a longitudinal groove engaged with a key on the inner surface and convex teeth on the outer surface. The front fork stem is locked by engaging a stationary lock pin on the frame with the convex teeth. And these conventional head fixing locks cause the running trouble by fixing the front wheels at an oblique angle with respect to the frame, and exhibit theft prevention.
Japanese Utility Model Publication No. 54-23463 Japanese Patent Laid-Open No. 11-5576

However, there is a case where the head fixing lock is damaged due to an excessive load caused by a handle operation due to mischief due to an impact on the steering wheel due to a fall or trying to return straight for maintenance movement in a bicycle parking lot. The repair requires replacement of damaged parts at a bicycle store, which has the disadvantage of being troublesome and expensive.
The present invention has been made to solve the disadvantages of the conventional bicycle head fixing lock.

  The inner diameter surface is divided into a fixed connection sleeve inner diameter body that is connected and fixed integrally with the handle such as the front fork stem, and an outer diameter body that has convex teeth or recesses around the outer peripheral surface, and the outer peripheral surface of the inner diameter body An overload avoidance interlocking lock body is provided between the inner diameter surface of the outer diameter body and the outer diameter body, and an outer periphery corresponding to the lock pin placed on the frame side is provided integrally with the handle. An overload avoidance interlock lock that engages the convex teeth or recesses of the handle and rotates the inner diameter body against an excessive load exceeding the required torque from the handle to avoid overload applied to the inner diameter body, outer diameter body, lock pin, etc. Bicycle head lock with body.

  An inner diameter body having a key on the inner diameter surface and an outer diameter body having convex teeth or recesses are provided separately, and a rotational resistor having a required torque is provided between the outer diameter surface of the inner diameter body and the inner diameter surface of the outer diameter body. An overload avoidance interlocking lock body is provided through the front, and this is arranged integrally with the front fork stem, and the lock pin placed stationary on the frame side is engaged with the corresponding convex teeth or recesses on the outer periphery. A bicycle head fixing lock equipped with an overload avoidance interlocking lock body that rotates the inner diameter body against an excessive load exceeding the required torque and avoids an excessive load applied to convex teeth or recesses and lock pins, etc. It is.

  The rotational resistor may be a resistor due to friction.

  The rotational resistor is a metal ring and may be press-fitted between the outer peripheral surface of the inner diameter body and the inner diameter surface of the outer diameter body.

  The rotation resistor is a metal ring whose connecting surface is formed into an uneven shape, and may be one that is press-fitted between the outer peripheral surface of the inner diameter body and the inner diameter surface of the outer diameter body to the limit of elastic deformation. is there.

  The rotational resistor is a synthetic resin ring and may be press-fitted between the outer peripheral surface of the inner diameter body and the inner diameter surface of the outer diameter body.

  Since the bicycle head fixing lock having the overload avoidance interlocking lock body according to the present invention is as described above, the inner diameter body and the outer diameter body of the overload avoidance interlocking lock body are fixed by friction, etc. When applied from the handle, the inner diameter body rotates with respect to the outer diameter body, and the inner diameter body and the member engaged with or connected to the outer diameter body, that is, the handle mechanism and the head lock are prevented from being destroyed.

  In addition, the overload avoidance interlocking lock body is supported by the inner diameter body as a support shaft, the lower surface is supported by a ball press, and the upper surface is firmly tightened and supported by the head fixing lock cover, intermediate nut, presser nut, and cap nut, It is easy to set and remove from the front fork stem, etc., shortens the conventional assembly process and contributes to the reduction of manufacturing costs.

  Due to the excessive load, the fixing position of the inner diameter body and outer diameter body of the overload avoidance interlocking lock body changes, so even if the handle angle is the same at the time of locking, the convex teeth of the outer diameter body that engage with the lock pin change. The same convex tooth is not repeatedly subjected to an excessive load, and the durability of the outer diameter body can be improved.

  A lock gear having a key that engages with the longitudinal groove of the front fork stem on the inner surface and a required number of convex teeth that engage with the lock pin on the outer surface. A spring metal ring in which a connecting surface is formed into an uneven shape between an outer peripheral surface of the inner diameter body and an inner peripheral surface of the outer diameter body, and divided into an outer diameter body having a required number of convex teeth around the surface. An overload avoidance interlocking lock body is provided by press-fitting to the limit of elastic deformation, this is deployed integrally with the front fork stem, and the lock pin placed on the frame side is engaged with the convex teeth on the outer periphery, and from the front fork stem A bicycle head-fixing lock comprising an overload avoidance interlocking lock body that rotates an inner diameter body against an excessive load exceeding the required torque and avoids an excessive load applied to convex teeth and a lock pin.

  Hereinafter, the bicycle head fixing lock provided with the overload avoidance interlocking lock body of the present invention will be described with reference to the bicycle head fixing lock 1 including the overload avoidance interlocking lock body 2 shown in FIGS. The overload avoidance linking lock body 2 is divided into an inner diameter body 2a having a key 3 on the inner diameter surface 2a1 and an outer diameter body 2b having convex teeth 4 provided around the outer peripheral surface 2b1 at a required interval. A rotational resistor 5 having a required torque is interposed between the outer peripheral surface 2a2 of the outer diameter body 2b and the inner diameter surface 2b2 of the outer diameter body 2b, and the key 3 of the inner diameter surface 2a1 in the overload avoidance interlocking lock body 2 is provided as a front fork stem. 6 is engaged with the key groove 6a and is integrated with the front fork stem 6 to engage the lock pin 7 placed on the side of the head pipe 8 and the convex teeth 4 on the outer peripheral surface 2b1 of the overload avoidance interlocking lock body 2. And before Hawkste Rotating the inner diameter body 2a for the required torque or excessive loads from 6, it is made to be able to avoid an excessive load on the protruding teeth 4 and the lock pin 7. Although not shown, the convex teeth 4 may be recessed.

  The rotational resistor 5 may be a frictional resistor, and a metal ring made of metal is press-fitted between the outer peripheral surface 2a2 of the inner diameter body 2a and the inner diameter surface 2b2 of the outer diameter body 2b. ing.

  The metal ring is made of stainless steel, spring steel plate, brass plate, copper plate or the like, and although not shown, the connecting surface may be formed into irregularities, for example, the outer circumference of the inner diameter body 2a. It is possible to press-fit the elastic deformation between the surface 2a2 and the inner diameter surface 2b2 of the outer diameter body 2b. The transmission torque obtained by the outer diameter body 2b of the convex tooth 4 and the inner diameter body 2a of the front fork stem 6 is, for example, 10 to 120 N · m, and does not transmit an excessive load.

  The rotational resistor 5 may be a synthetic resin ring, and is press-fitted between the outer peripheral surface 2a2 of the inner diameter body 2a and the inner diameter surface 2b2 of the outer diameter body 2b. By this synthetic resin ring, the same transmission torque as that obtained by the metal ring, 10 to 120 N · m, can be obtained.

Next, referring to FIG. 4 and FIG. 5, the embodiment of the bicycle head fixing lock 1 including the overload avoidance interlocking lock body 2 of the present invention and the assembly of the overload avoidance interlocking lock body 2 and the front fork stem 6 are described. Explaining, in the upper one 9 fixed to the upper end of the head pipe 8, a pedestal portion 10 having a peripheral edge and a partial outer edge thereof extended in a square shape is extended, and a screw insertion hole is provided in the vicinity of the outer edge of the pedestal portion 10. Is provided on the upper surface of the cradle unit 10 with screws 12 and a head fixing lock body 11 having a screw receiving hole corresponding to the bottom surface. After the ball press 13 is screwed into the front fork stem 6 and the bearing 14 is pushed to smoothly support the upper one 9, the key 3 provided on the inner diameter surface 2 a 1 of the overload avoidance interlocking lock body 2 is moved downward with the washer 15. Engage with the key groove 6a provided on the front fork stem 6 to engage the overload avoidance linking lock body 2 with the front fork stem 6, and connect the cover 16 to the front fork stem 6 to fit the front fork stem 6; The outer edge 16a bent downward of the cover 16 is covered on the outer side of the upward flange 17 of the head-fixing lock body 11, and the upper surface of the cover 16 is press-contacted with an intermediate nut 18 that is screwed to the front fork stem 6. Further, after the car bracket 19 is fitted, the presser nut 20 is screwed and further tightened by the cap nut 21.

  The head lock main body 11 attached to the cradle 10 is provided with a cylinder lock receiving hole 22 and a cylinder lock 23 which is an example of a lock means is provided laterally and at a required angle to be freely rotatable. 23 is exposed to the outer surface of the head-fixing lock main body 11 so that the lock key 24 can be inserted from the outside, and an operation projection 25, which is an example of the operation means of the lock means, is integrally provided at the rear end. It can be turned freely.

  The lock pin 7 is connected to the head fixed lock body 11 by reciprocating in the axial direction of the head pipe 8 by an operation projection 25 which is an example of the operation means of the lock means, and is provided on the lock pin 7. The portion 26 and the operation projection 25 of the cylinder lock 23 are linked.

  As a safety mechanism of the bicycle head fixing lock 1, a locking locking groove 27 and an unlocking locking groove 28 are provided on the outer periphery near the front end of the cylinder lock 23 at a required angle, 90 degrees in the embodiment, to provide a head fixing lock body. 11 and a push button 30 that is urged and projected by the action of the safety lock spring 29 is provided on the upper surface of the head fixed lock body 11, and a bent portion 31 a at one end is provided on the push button 30 in the operation direction. Is fitted in the transverse direction to integrally connect the safety lock rod 31, and the insertion lock end 31b of the other end of the safety lock rod 31 is provided in the direction opposite to the operation direction, and the corresponding cylinder It is provided so as to be inserted and locked into the locking locking groove 27 and the unlocking locking groove 28 of the lock 23.

  Although the front fork stem 6 and the handle post 32 are not shown, they are integrally fixed by fixing means.

  Since the bicycle head fixing lock provided with the overload avoidance interlocking lock body of the present invention is as described above, the handle mechanism and the head fixing lock are prevented from being destroyed even if an excessive load is applied to the handle when the handle lock is fixed. In the prior art, it is possible to eliminate a great amount of labor, time and cost in such a case.

It is a perspective view of the single body of the overload avoidance interlocking lock body of the bicycle head fixing lock provided with the overload avoidance interlocking lock body. Similarly, it is a longitudinal sectional view. It is a perspective view which shows an example of the washer used when arrange | positioning on an upper beading. It is a partially cutaway side view of the bicycle head fixing lock provided with the overload avoidance interlocking lock body of the present invention. Similarly, it is a top view which shows the engagement state of a lock body and a lock pin which remove | eliminate an upper half cap nut, a cap screw, and an upper cover, and avoid an overload.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bicycle head fixed lock 2 Overload avoidance interlock lock body 2a Inner diameter body 2a1 Inner diameter surface 2a2 Outer diameter surface 2b Outer diameter body 2b1 Outer diameter surface 2b2 Inner diameter surface 3 Key 4 Convex tooth 5 Rotation resistor 6 Front fork stem 6a Key groove 7 Lock Pin 8 Head pipe 9 Upper one 10 Receiving part 11 Head fixing lock body 12 Screw 13 Cushion 14 Bearing 15 Washer 16 Cover 16a Outer edge 17 Upward hook 18 Medium nut 19 Car bracket 20 Presser nut 21 Cap nut 22 Cylinder lock receiving hole 23 Cylinder lock 24 Lock key 25 Operation projection 26 Linking portion 27 Locking locking groove 28 Unlocking locking groove 29 Safety lock spring 30 Push button 31 Safety lock rod 31a One end bent portion 31b The other end insertion locking end 32 Handle post

Claims (6)

  The inner diameter surface is divided into an inner diameter body that is fixedly connected to a member that is integrally connected and fixed to the handle such as the front fork stem, and an outer diameter body that is provided with convex teeth or recesses on the outer peripheral surface. An overload avoidance interlocking lock body is provided between the inner diameter surface of the outer diameter body and the outer diameter body, and an outer periphery corresponding to the lock pin placed on the frame side is provided integrally with the handle. An overload avoidance interlock lock that engages the convex teeth or recesses of the handle and rotates the inner diameter body against an excessive load exceeding the required torque from the handle to avoid overload applied to the inner diameter body, outer diameter body, lock pin, etc. Bicycle head lock with body.   An inner diameter body having a key on the inner diameter surface and an outer diameter body having convex teeth or recesses are provided separately, and a rotational resistor having a required torque is provided between the outer diameter surface of the inner diameter body and the inner diameter surface of the outer diameter body. An overload avoidance interlocking lock body is provided through the front, and this is arranged integrally with the front fork stem, and the lock pin placed stationary on the frame side is engaged with the corresponding convex teeth or recesses on the outer periphery. A bicycle head fixing lock comprising an overload avoidance interlocking lock body that rotates an inner diameter body with respect to an excessive load exceeding a required torque and avoids an excessive load applied to convex teeth or recesses and a lock pin.   3. The bicycle head fixing lock comprising the overload avoidance interlocking lock body according to claim 1, wherein the rotational resistance body is a frictional resistance body.   4. The bicycle having an overload avoidance interlocking lock body according to claim 3, wherein the rotation resistor is a metal ring and is press-fitted between an outer peripheral surface of the inner diameter body and an inner diameter surface of the outer diameter body. Head locking tablet.   The rotation resistor is a metal ring whose connecting surface is formed into an uneven shape, and is characterized in that it is press-fitted between the outer peripheral surface of the inner diameter body and the inner peripheral surface of the outer diameter body with elastic deformation as a limit. A bicycle head fixing lock comprising the overload avoidance interlocking lock body according to claim 3.   4. The overload avoidance interlocking lock body according to claim 3, wherein the rotation resistor is a synthetic resin ring and is press-fitted between an outer peripheral surface of the inner diameter body and an inner diameter surface of the outer diameter body. Bicycle head locking tablet.

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