JP5210045B2 - Safety device for bicycle head lock device - Google Patents

Description

  The present invention relates to a safety device for a bicycle head lock device.

  Conventionally, in Patent Document 1, a locking portion 71 is provided on one of a rotating member A that rotates together with a handlebar and a fixing member that supports the rotating member A, and the other is engaged with the locking portion 71. A locking mechanism C that locks the rotation of the rotating member A and that is movable so as to be unlocked by disengagement is provided so that the rotating member A can be freely rotated with respect to the fixed member B when the lock is released. The lock mechanism C is locked when the lock body 8 is engaged with the engaging portion 71, and when a rotational torque more than a predetermined value is applied to the handlebar, the rotating member A has a predetermined friction resistance. There has been proposed a steering wheel control mechanism for a bicycle, characterized in that it is provided with friction resistance means for enabling rotation.

  In Patent Document 2, as a head lock mechanism, a rotating member 35, a disk-shaped rotating plate 39, a wave washer 41 that presses the rotating plate 39 against a flange 40 on the upper portion of the rotating member 35, and the wave washer 41 are disclosed. And a spring retainer 42 that prevents the lower part from falling off. The rotating plate 39 is formed with a number of fixing holes 43 penetrating vertically on the same circumference. A lock pin that is fitted to the fixing hole 43 of the rotating plate 39 by moving up and down is provided on the fixing member.

Japanese Utility Model Publication No. 7-17666 JP 2005-59741 A

  In the handle control mechanism for a bicycle disclosed in Patent Documents 1 and 2, since the stem and the handle post of the front fork that supports the front wheels are integrally formed as usual, the rotating plate is loosely fitted to the rotating member. Even if the wave washer that presses the button is broken, there is no problem in the operation of the handle, but the handle control function is lost, the handle becomes free even when locked, and the anti-theft function is lost. Further, there is a risk that fragments of the wave washer may get entangled with the rotating member and the fixed member, and there is a risk of obstructing rotation of the handle integrated with the rotating member.

  The safety device for a bicycle head lock device according to the present invention has been devised for the purpose of maintaining the handle lock function when the wave washer is damaged and ensuring the safety of the handle operation.

A lock gear is rotatably supported on a rotation support member integral with the hawk stem, and a tooth portion formed on the peripheral surface of the lock gear advances and retracts in an axial direction and an outer diameter direction provided on a fixing member integral with the head tube. locked rod and disengageably configured to presses the clutch surface of the rotary support member and the clutch surface of the lock gear, the bicycle head locking device including a wave washer to obtain a constant rotational resistance, the wave washer the bottom articulating having the axial and transverse direction of the fork stem integral with the rotation support member and the axis of the rotation support member of the rotation supporting said fork stem integrally a fitting hole fitted around member to the bottom portion comprising a direction facing the regulating member placing the upper end to the upper end outer periphery of the rotary support member, gar having side wall portion for accommodating the wave washer inside It is the cover to the safety device for a bicycle head locking device comprising deployed between the lock gear and the regulating member of the rotary support member.

  Since the safety device of the bicycle head lock device according to the present invention is as described above, even if the wave washer is damaged, it is accommodated in the guard cover. The function can be maintained. In addition, since the wave washer is broken and does not fall into small pieces and dispersed downward, the wave washer does not hinder the rotation of the handle, and the handle can be operated smoothly.

A lock gear is rotatably supported on a rotation support member integral with the hawk stem, and a tooth portion formed on the peripheral surface of the lock gear advances and retracts in an axial direction and an outer diameter direction provided on a fixing member integral with the head tube. The lower surface of the lock gear is formed on an uneven clutch surface, and is engaged with the uneven clutch surface formed on the upper surface of the flange portion at the lower end of the rotation support member facing the lock gear. if capable constructed, the rotary support is fitted regulation member in an annular groove formed on the upper end outer periphery of the member, wave washer between this regulating member wherein the lock gear is fitted pressing force of the wave washer The lock gear is pressed against the collar, the clutch surface of the lock gear facing the clutch and the clutch surface of the collar are engaged, and the rotation support section with respect to the lock gear that stops rotating when engaged with the lock collar In bicycle head locking device configured to be rotatable at a constant or more rotating torque, said rotating between the wave washer and the lock gear of the outer periphery of the support member, said fork stem integral bottom portion for connecting with the wave washer The rotation support member has an axial direction and a transverse direction, and has a fitting hole which is fitted on the outer periphery of the rotation support member at the bottom thereof in the axial direction of the rotation support member integral with the fork stem, and has an upper end. A safety device for a bicycle head lock device , wherein a guard cover having a side peripheral wall portion that accommodates the wave washer inside is provided facing a regulating member that is disposed on an outer periphery of an upper end of the rotation support member .

Hereinafter, the safety device for a bicycle head lock device according to the present invention will be described with reference to the embodiments shown in the drawings. The lock gear 3 is rotatably mounted on a rotation support member 2 integral with the hawk stem 1. The peripheral surface of the lock gear 3 is formed with a tooth portion 3a and is engaged with a lock rod 5 provided on the fixing member 4 to constitute a locked state where rotation is stopped. The lower surface of the lock gear 3 is formed on an uneven clutch surface 3b, and is configured to be engageable with an uneven clutch surface 2a1 formed on the upper surface of the flange 2a at the lower end of the rotating support member 2 facing the lock gear 3. A restricting member 6 is fitted into an annular groove 2 b formed on the outer periphery of the upper end of the rotation support member 2, and a wave washer 7 is externally fitted between the restricting member 6 and the lock gear 3, and the pressing force of the wave washer 7 is Thus, the lock gear 3 is pressed against the flange portion 2a, and the clutch surface 3b of the lock gear 3 and the clutch surface 2a1 of the flange portion 2a are engaged with each other to constitute a resistance that can be rotated with a rotational torque of a certain level or more. A fitting hole 8a1 that fits around the outer periphery of the rotation support member 2 is opened between the wave washer 7 and the lock gear 3 on the outer periphery of the rotation support member 2, and the bottom portion 8a on which the wave washer 7 is connected and placed. in which a formed by deploying composed guard cover 8 a peripheral edge of the wave washer 7 and a side peripheral wall portion 8b for housing inwardly.

  The fixing member 4 is formed with a protruding cylindrical portion 10a connected to the upper end of the head tube 9, the upper portion thereof is formed on the upper ball receiving portion 10b, and the periphery thereof is extended to be formed on the bottom portion 10c. 10, a casing main body 11 connected to the upper surface of the bottom plate 10 and fixed integrally therewith, and a transmission that is sandwiched between the bottom plate 10 and the casing main body 11 and protrudes from the lower part to the notch portion of the bottom plate 10 and fixed integrally therewith. The mechanism housing 12 is configured.

  In the casing body 11, a conversion lever 13 accommodated and arranged in the transmission mechanism housing 12 is linked to the transmission line 14, and the back-and-forth movement of the inner wire 14 a of the transmission line 14 is converted into a rotation operation by the conversion lever 13. Furthermore, it is linked to the lock rod 5 accommodated and deployed in the casing body 11 through the intermediate linkage lever 15 accommodated and deployed in the casing body 11 and converted into a forward / backward movement in the axial direction. A return spring 16 is provided, and the return spring 16 constantly urges the lock rod 5 accommodated and deployed in the casing body 11 to move in the opening direction with respect to the lock gear 3 accommodated and deployed in the casing body 11. The lock gear 3 is configured to be opened.

  The coil spring 17 that performs the expansion action is passed between the casing body 11 and the lock rod 5, and is urged in an auxiliary manner in a direction in which the lock rod 5 is always engaged with the lock gear 3, which is weaker than the urging force of the spring 16. ing. The output pin 18 is attached to the intermediate linkage lever 15 and linked to the lock rod 5.

  The operation unit 19 for the rear wheel circle lock and the conversion lever 13 in the transmission mechanism housing 12 are linked by the transmission line 14 comprising the inner wire 14a and the outer wire 14b as described above, and the operation unit for the rear wheel circle lock. When 19 is in the open position, the inner wire 14 a is returned, the conversion lever 13 is returned together with the intermediate linkage lever 15 by the action of the return spring 16, and the lock rod 5 is released from the lock gear 3. On the contrary, when the operation unit 19 of the rear wheel circle lock moves to the locked position, the inner wire 14a is pulled to rotate the conversion lever 13, and the return spring 16 is wound around the intermediate linkage lever 15 to move in the opposite direction. As shown in FIG. 1, the lock rod 5 is engaged with the lock gear 3 to lock the lock gear 3.

  The lid plate 20 has an internal waterproof function, the lower surface is connected to the rotation support member 2, the opposite upper surface is connected to the first nut 21, and the first nut 21 and the second nut 22 above it are double. It is fixed with a nut. The connection between the lower surface of the rotation support member 2 and the ball bearing 23 accommodated in the upper ball receiver 10b is adjusted to smoothly rotate by the tightening positions of the first nut 21 and the second nut 22.

  Since the safety structure device for a bicycle head lock device according to the present invention is configured as described above, when the lock washer 3 and the lock rod 5 are in an engaged state, the wave washer 7 is broken or broken. Even so, the wave washer 7 is accommodated in the guard cover 8 with the upper side of the guard cover 8 closed by the restricting member 6, and the fragments of the wave washer 7 do not diffuse outside and the spring action is maintained. Therefore, the locking function of the lock of the lock gear 3 is maintained.

  Further, even when the wave washer 7 is damaged as described above, the spring action is maintained, so that the handle operation safety can be ensured without causing any trouble in the rotation of the handle.

  The safety device for a bicycle head lock device according to the present invention is effective in safe traveling of a bicycle and prevention of theft, and contributes to the expansion of the use of the bicycle.

It is a longitudinal section showing an example of a safety device of a bicycle head lock device of the present invention. Similarly, in the safety device of the bicycle head lock device of the present invention, the fork stem and the rotating member fixed to the fork stem are omitted, and the top view of the casing body is cut. Similarly, it is an exploded perspective view of the rotating member of the safety device of the bicycle head lock device of the present invention. Similarly, it is a top view of the sole plate which comprises the fixing member of the safety device of the bicycle head lock device of the present invention.

Explanation of symbols

1 fork stem 2 rotation supporting member 2a flange portion 2a1 clutch surface 2b annular groove 3 lock gear 3a teeth 3b clutch face 4 fixing member 5 the locking rod 6 regulating member 7 wave washer 8 guard cover 8a bottom 8a1 fitting hole 8b side peripheral wall portion 9 Head tube 10 Bottom plate 10a Protruding tube portion 10b Upper ball receiving portion 10c Bottom portion 10d Notch portion 11 Casing body 12 Transmission mechanism housing 13 Conversion lever 14 Transmission line 14a Inner wire 14b Outer wire 15 Intermediate linkage lever 16 Return spring 17 Coil spring 18 Output Pin 19 Operation part of rear wheel circle lock 20 Lid plate 21 First nut 22 Second nut 23 Ball bearing

Claims (1)

A lock gear is rotatably supported on a rotation support member integral with the hawk stem, and a tooth portion formed on the peripheral surface of the lock gear advances and retracts in an axial direction and an outer diameter direction provided on a fixing member integral with the head tube. locked rod and disengageably configured to presses the clutch surface of the rotary support member and the clutch surface of the lock gear, the bicycle head locking device including a wave washer to obtain a constant rotational resistance, the wave washer the bottom articulating having the axial and transverse direction of the fork stem integral with the rotation support member and the axis of the rotation support member of the rotation supporting said fork stem integrally a fitting hole fitted around member to the bottom portion comprising a direction facing the regulating member placing the upper end to the upper end outer periphery of the rotary support member, gar having side wall portion for accommodating the wave washer inside Safety device for a bicycle head locking device comprising deploying the cover between the lock gear and the regulating member of the rotary support member.

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