JP5097010B2 - Bicycle head lock device - Google Patents

Description

  The present invention relates to a bicycle head lock device that can easily forcibly unlock a head lock and replace an operation inner wire.

  Conventionally, as shown in Patent Document 1, the present applicant has provided a housing portion by a bottom plate formed integrally with an upper one fixed to the upper end of a head pipe and a casing body fixed to the bottom plate, A bicycle head lock device is proposed in which a lock gear for fixing a handle to a housing portion and a lock means for engaging with the lock gear are housed and arranged.

Japanese Patent Laid-Open No. 11-5578

In the bicycle head lock device disclosed in Patent Document 1, for example, the casing body is overturned during running, or the casing body is destroyed due to an artificial destructive force during parking, or the operation of the lock rod is activated due to failure. It may become impossible.
Further, the inner wire of the transmission cable that operates the unlocking / locking by relaying between the bicycle head lock device and the rear wheel lock may be damaged.

  In the present invention, when the head locking device is locked due to such a fall or an artificial destructive force, or when the head locking device is locked, the forcible unlocking and the replacement of the inner wire are easy. It was devised for the purpose of being able to do it.

  The lock gear of the constant torque rotation support member fixed to the fork stem that is rotatably supported by the bearing unit integrated with the head pipe, and the transmission lock mechanism housing integrated with the head pipe are related to the operation unit of the rear wheel lock. In the bicycle head lock device, in which the reciprocating lock rod is engaged to lock the rotation of the fork stem, an output crank linked to the lock rod is provided on the inner bottom surface of the recess housing portion of the transmission lock mechanism housing. A mounting screw hole corresponding to the tip of the linkage lever formed at the other end of the rotary linkage having a pin at one end is opened, and reciprocates in relation to the operation portion of the rear wheel lock through the mounting screw hole. The inner wire of the transmission cable is configured to be inserted inward, the tip of the inner wire is related to the tip of the linkage lever, and the mounting The operation rod hole is opened to the side with an appropriate distance from the hole, and the operation rod is inserted into the operation rod hole from the outside, and the linkage lever is operated to lock the device without disassembling the device. In the bicycle head lock device, the fork stem is unlocked by forcible movement of the heel and the relationship between the tip of the linkage lever and the tip of the inner wire is removed, and the inner wire is replaceable.

  A bicycle headlock device may be provided with an inner standing guide surface portion inclined toward the proximal end and an outer standing guide surface portion inclined toward the distal end formed on the upper surface on the distal end side of the recessed receiving seat. is there.

A bicycle head lock device may be provided in which an engaging portion that engages with the distal end engaging portion of the operating rod is formed at an intermediate portion between the distal end and the proximal end of the linkage lever.

  Since the bicycle head lock device of the present invention is as described above, the inner wire can be replaced simply by removing the transmission cable fitting from the transmission lock mechanism housing portion while disassembling the device without disassembling the device. Can be easily performed. In addition, when a malfunction occurs and the lock state is reached, it can be easily and forcibly unlocked by the operating rod, which contributes to the improvement of the maintenance of the accessory.

  The lock gear of the constant torque rotation support member fixed to the fork stem that is rotatably supported by the bearing unit integrated with the head pipe, and the transmission lock mechanism housing integrated with the head pipe are related to the operation unit of the rear wheel lock. In the bicycle head lock device in which the reciprocating lock rod is engaged to lock the rotation of the fork stem, an output crank pin linked to the lock rod is provided at one end on the upper surface of the transmission lock mechanism housing. A bearing for bearing the rotating linkage is formed, and a recess receiving portion is formed on the upper surface excluding the bearing, and a mounting screw hole corresponding to the tip of the linkage lever is formed on the inner bottom surface of the recess receiving portion from the outer bottom surface. An opening is provided in communication with the transmission cable mounting portion formed integrally and projecting downward, and an operation rod hole is provided at an interval with the mounting screw hole at an appropriate distance. On the upper surface of the distal end of the linkage lever, there is formed a recessed seat that has side wall surfaces facing each other at a predetermined interval around the rotation surface of the rotary linkage body, and an introduction groove that opens at the tip edge is formed in communication. A fixing connection portion of the outer wire of the transmission cable reciprocating in relation to the operation portion of the rear wheel lock is provided at one end of the mounting screw hole of the transmission cable mounting portion of the transmission lock mechanism housing. Screw the screw formed on the other end of the transmission cable mounting bracket that inserts the inner wire from the outside, insert the inner wire into the transmission lock mechanism housing, and connect the end stop ball of the inner wire to the linkage lever It is configured so as to be freely engageable with a recess seat on the top surface of the tip, and the operation rod is inserted into the operation rod hole from the outside and the linkage lever is operated, so that the lock rod is forcibly moved without disassembling the device. F Association with the tip of the tip and the inner wire of the unlock the linkage lever of Kusutemu deviates, bicycle head locking device inner wire is freely exchanged.

  Hereinafter, the present invention will be described with reference to a bicycle headlock device 1 which is an embodiment shown in the drawings. A casing main body 3 die-cast using a light alloy as a material on a bottom plate 2 formed by press forming a steel plate is engaged and screwed. The bottom plate 2 is rotatably supported by a fork stem 6 equipped with a projecting cylindrical portion 2a that is connected and fixed to the upper end of the head tube 4 and a constant torque rotation support member 5 that rotates at a predetermined torque or more. Upper ball bearing portions 2b are respectively formed.

  As shown in FIG. 4, the bottom plate 2 has an engagement protrusion 2 d formed on a part of the outer peripheral edge 2 c 1 of the flat plate-like portion 2 c and is formed to protrude from the outer periphery of the casing body 3. It is provided to engage with.

  As shown by a temporary line in FIG. 4, the bottom plate 2 faces a transmission lock mechanism housing cavity 3 c described later formed by being recessed in the bottom surface of the casing body 3 (an outer peripheral edge portion 2 c 11 indicated by a temporary line). ) Is lacking and formed on the receiving edge 2e.

  The bottom plate 2 is provided with bottom plate attachment holes 7, 7, 7 at three locations.

  As shown mainly in FIGS. 1 and 5, the casing main body 3 accommodates a rotation accommodating cavity 3 a that penetrates and accommodates a fork stem 6 that is equipped with the constant torque rotation support member 5 inside, and the bottom plate 2. A lower-stage bottom plate insertion recessed recess 3b1 and a partition 3e are separated from the rotation-accommodating cavity 3a. The recess seats 3b2 and the transmission lock mechanism accommodating cavities 3c for accommodating and guiding the transmission lock mechanism 8 on the transmission lock mechanism housing 9 are formed in the bottom of the recess recesses 3b2.

  As shown in FIG. 6, the constant torque rotation support member 5 includes a rotation support body 10 that is integrally fixed to the fork stem 6, and a lock gear 11 is rotatably mounted on the rotation support body 10. The peripheral surface of the lock gear 11 is formed with teeth 11a at a predetermined pitch, and is engaged with the lock rod 12 of the transmission lock mechanism 8 accommodated in the transmission lock mechanism accommodating cavity 3c of the casing body 3, and the fork stem 6 The rotation stop lock state is configured.

  The lower surface of the lock gear 11 is formed with an uneven clutch surface 11b, and is configured to be engageable with an uneven clutch surface 10a1 formed on the upper surface of the flange portion 10a at the lower end of the rotating support 10 facing the lock gear 11.

  A C pressing ring 13 is fitted in an annular groove 10 b formed on the outer periphery of the upper end of the rotary support 10, and a wave washer 14 is externally fitted between the C pressing ring 13 and the lock gear 11, and the wave washer 14. The lock gear 11 is pressed against the flange portion 10a of the rotary support body 10 by the pressing force, and the clutch surface 11b of the lock gear 11 and the clutch surface 10a1 of the flange portion 10a of the rotary support body 10 are engaged to lock the lock gear 11 In this state, the constant torque rotation support member 5 is configured to obtain resistance that allows a handle (not shown) integrated with the fork stem 6 to rotate with a rotation torque of a certain level or more.

  The bottom plate insertion recess 3b1 of the casing body 3 is provided with three bottom plate fixing screw holes 15, 15, 15 on the bottom plate 2, and a transmission lock is provided on the outer peripheral bottom surface 3f of the casing body 3. One position of the transmission lock mechanism housing fixing screw hole 16 of the mechanism housing 9 is opened, and the bottom plate 2 is fixed by the bottom plate mounting screws 17, 17, 17 screwed into the bottom plate fixing screw holes 15, 15, 15. The transmission lock mechanism housing 9 is fixed by a transmission lock mechanism housing mounting screw 18 screwed into the transmission lock mechanism housing fixing screw hole 16. That is, in the transmission lock mechanism housing 9, the upper edge inner diameter flange portion 9a formed on the inner diameter side of the upper surface is fitted and connected to the upper inner diameter flange portion insertion concave recess portion 3b2, and the bottom plate 2 is connected and covered from below. Thereafter, the bottom plate fixing screws 17, 17, 17 which are screwed into the bottom plate fixing screw holes 15, 15, 15 of the casing body 3 are tightened and clamped in the upper inner diameter flange insertion recess seat portion 3 b 2 from the bottom plate 2, After the upper edge outer diameter flange portion 9b of the upper surface of the lock mechanism housing 9 is applied to the outer peripheral bottom surface 3f of the casing body 3, the transmission lock mechanism housing is inserted into the transmission lock mechanism housing mounting hole 19 opened to the upper edge outer diameter flange portion 9b. The mounting screw 18 is inserted, and the transmission lock mechanism housing mounting screw 18 is screwed and fixed to the transmission lock mechanism housing fixing screw hole 16 of the casing main body 3 to fix the bottom plate 2 and the casing main body 3 to each other. Couples the dynamic lock mechanism housing 9.

  The transmission lock mechanism housing 9 is provided with bearings 20a, 20b that face each other at a corner of the upper surface with a predetermined interval, and the shaft portion 22 of the rotary linkage 21 is rotatably provided on the bearings 20a, 20b. The At one end of the shaft portion 22, a linkage lever 23 whose base end is integrally connected is provided. In the embodiment, a display drum 24 is supported integrally with the shaft portion 22 as a lock state display 24 a that displays the locked state of the peripheral surface and an open state display 24 b that displays the open state. The linkage lever 23 is formed.

  A concave receiving seat 23a is formed on the upper surface of the distal end of the linkage lever 23, and the concave receiving seat 23a has side wall surfaces 23b1 and 23b2 facing each other at a predetermined interval around the rotation surface of the shaft portion 22, An introductory groove 23b that opens at the distal end edge is formed in communication, and on the upper surface on the distal end side of the recessed receiving seat 23a, inner standing guiding surface portions 23c11, 23c12 that are inclined toward the proximal end, and outer standing guiding surface portions 23c21, 23c22 that are inclined toward the distal end. And are formed.

The other end of the shaft portion 22 is formed in the return spring winding shaft portion 22a and the end portion is formed in the output crank pin 26, and the lock rod 12 is linked. A return spring 27 is wound around the return spring winding shaft portion 22 a, and the return spring 27 always rotates the rotary linkage 21 so that the entire lock rod 12 rotates in the opening direction with respect to the lock gear 11. Energized and configured to release the lock with the lock gear 11.

  The pushing spring 28 is extended to the housing cavity outer peripheral side inner wall surface 3c1 of the transmission lock mechanism housing cavity 3c of the casing body 3 and the lock rod 12, and performs an expansion action. There is no pressing action weaker than the biasing force of the return spring 27 in the engaging direction, and the operation of the return spring 27 is followed.

  An upper surface of the transmission lock mechanism housing 9 is formed in the recessed housing portion 29 except for the bearings 20a and 20b, and is configured as a rotation space of the linkage lever 23 of the rotary linkage 21, and the linkage lever is provided on the inner bottom surface 9c. A transmission cable mounting portion 31 is formed at the center of the mounting screw hole 30 that opens corresponding to the tip of the transmission cable 23, and protrudes downward from the outer lower surface 9 d of the transmission lock mechanism housing 9. The threaded portion 33b of the other end of the transmission cable mounting bracket 33, which is provided with the fixed connection portion 33a of the outer wire 32a and through which the inner wire 32b of the transmission cable 32 is inserted, is connected to the transmission cable mounting section 31 of the transmission lock mechanism housing 9. The transmission screw mounting bracket 33 is fixed to the transmission lock mechanism housing 9 by being screwed into the mounting screw hole 31 a from the outside and locked by the lock nut 34.

  An operation hole 35 through which the operation rod 25 is inserted is opened on the inner bottom surface 9c of the transmission lock mechanism housing 9 for forced unlocking of the lock and replacement of the inner wire 32b. The operation hole 35 also serves as a drain hole.

  In a state where the transmission cable mounting bracket 33 is connected to the transmission lock mechanism housing 9, the end stop ball 32 b 1 of the inner wire 32 b provided in the recess accommodating portion 29 is recessed on the upper surface of the distal end of the linkage lever 23. The rear wheel circle lock operation unit 36 is linked to the linkage lever 23 by the outer wire 32a and the inner wire 32b, and converts the reciprocating motion of the inner wire 32b into a rotation action. The output crank pin 26 formed integrally with the end is rotated.

  A guide groove 37 communicating with the rotary accommodating cavity 3a is formed in the accommodating cavity ceiling surface 3c2 and the partition wall 3e of the transmission lock mechanism accommodating cavity 3c, and the lock rod 12 is accommodated and guided.

  A display drum recess housing portion 3c21 provided with a window 38 that faces the display drum 24 and visually recognizes the display state is formed on the ceiling surface 3c2 of the transmission lock mechanism housing cavity 3c.

  An exchange recess housing portion 3c22 is formed on the ceiling surface 3c2 of the transmission lock mechanism housing cavity 3c so as to face the end stop ball 31b1 at the tip of the inner wire 31b.

  When the rear wheel circle lock operating portion 36 is in the open position, the return operation of the inner wire 32b is performed, the rotary linkage 21 is returned by the action of the return spring 27, the lock rod 12 is returned by the output crank pin 26, and the lock gear 11 is open. Conversely, when the rear wheel circle lock operating portion 36 moves to the locked position, the inner link 32b is pulled to rotate the rotary linkage 21, the return spring 27 is tightened to rotate the output crank pin 26 in the opposite direction, The lock rod 12 is moved to the fork stem 6 side, and the lock rod 12 is engaged with the lock gear 11 to lock the lock gear 11 as shown in FIG.

  The cover plate 39 has an internal waterproof function, has a lower surface connected to the rotary support 10, and an opposite upper surface fixed by a double nut of a first nut 40 and a second nut 41. According to the tightening positions of the first nut 40 and the second nut 41, the connection between the lower surface 10c of the rotary support 10 and the ball bearing 42 accommodated in the upper ball bearing portion 2b is adjusted to smoothly rotate.

  Since the bicycle head lock device of the present invention is configured as described above, when the inner wire 32b of the transmission line 32 needs to be replaced, as shown in FIG. Then, the transmission cable mounting bracket 33 is removed from the transmission lock mechanism housing 9, and then the operation rod 25 is inserted into the transmission lock mechanism housing 9 from the operation hole 35, and the tip engagement portion 25 a is engaged with the engagement portion 23 e of the linkage lever 23. Is pulled downward to rotate the linkage lever 23, and its tip is lowered to approach the inner bottom surface 9c. Therefore, if the inner wire 32b is pushed up, the end stop ball 32b1 is detached from the recessed receiving seat 23a of the lowering link lever 23 and is stored in the replacement recess receiving portion 3c22 of the upper casing body 3, It can escape to the outside of the rotating passage.

  Next, when the operating rod 25 is raised, the linkage lever 23 rotates following the action of the return spring 26 and returns to a position where the tip is in contact with the ceiling surface. Here, if the inner wire 32b is pulled down, it can be removed to the outside of the transmission lock mechanism housing 9 through the screw hole 31a.

  Next, the inner wire 32b is replaced with a new one, and the end stop ball 32b1 is inserted into the transmission lock mechanism housing 9 through the screw hole 31a while the end stop ball 32b1 is inserted into the transmission line fitting 33, and the end stop ball 32b1 is replaced. When the linkage lever 23 is pulled down again with the operating rod 25 in the state where the inner recess 3c22 is reached, the inner wire 32b is held at the center of the screw hole 31, so that the introduction groove 23b of the linkage lever 23 is provided. The inner wire 32b can be inserted into the introduction groove 23, the inner wire 32b can be pulled downward, and the end stop ball 32b1 at the tip can be fitted into the recessed receiving seat 23a. The position of the threaded portion 33b of the bracket 33 is adjusted and screwed into the screw hole 31a, and the lock nut 34 is tightened to the outer lower surface of the transmission lock mechanism housing 9. It is intended to secure the Dosaku mounting bracket 33.

  In the replacement of the inner wire 32b, the inner erection guide surface portions 23c11 and 23c12 are arranged so that the inner erection guide surface portions 23c11 and 23c12 are in contact with the inner wire 32b on the inner side, i. 23c22 guides the abutting inner wire 32b to the outside, that is, in a direction to remove it from the linkage lever 23.

  Next, when the bicycle head lock device of the present invention is in the locked state, the operation rod 25 is inserted into the transmission lock mechanism housing 9 from the operation hole 35 and the tip of the linkage lever 23 is pushed up from below. Then, the linkage rotating body 21 is rotated, the lock rod 12 is moved backward by the rotation of the output crank pin 26 of the linkage rotating body 21, and the engagement is released from the tooth portion 11a of the lock gear 11 to forcibly unlock. It can be done.

  Although not shown in the drawings, as another embodiment of the present invention, a concave receiving seat is formed on the lower surface of the distal end of the linkage lever 23, and the mounting screw hole 30 of the transmission cable mounting portion 31 of the transmission lock mechanism housing 9 is formed. The transmission cable mounting bracket 33 is provided with a fixed connection portion 33a of the outer wire 32a of the transmission line 32 reciprocating in relation to the rear wheel lock operation unit 36 at one end and the inner wire 32b of the transmission line 32 is inserted inward. A screw portion 33b formed at the other end is screwed from the outside, the inner wire 32b is inserted into the transmission lock mechanism housing 9, and the end stop ball 32b1 of the inner wire 32b is recessed in the lower surface of the distal end of the linkage lever 23. Without being disassembled, the operation rod 25 is inserted into the operation rod hole 35 from the outside and the linkage lever 23 is operated. Bicycle head lock in which the fork stem 6 is unlocked by forcibly moving the hook rod 12, the recess receiving seat of the linkage lever 23 and the end stop ball 32b1 of the inner wire 32b are disconnected, and the inner wire 32b is replaceable It is good also as an apparatus.

  The present invention allows the inner wire to be replaced simply by removing the transmission cable attachment in the state of being mounted on the bicycle without disassembling the bottom plate, the casing body, and the transmission lock mechanism housing, which are the main parts of the bicycle head lock device. It can be done easily. In addition, when the vehicle is locked due to a failure, it can be easily and forcibly unlocked, contributing to the expansion of bicycle use. The operation rod hole functions as a drain hole, and maintains the smooth operation of the transmission lock mechanism over a long period of time.

It is a longitudinal cross-sectional view which shows the Example of the head lock apparatus for bicycles of this invention. Similarly, in the bicycle head lock device according to the present invention, the constant torque rotation support member including the fork stem, the handle stem, and the lock gear attached to them is omitted, and the upper part of the casing body is cut and arranged on the bottom plate. It is a cross-sectional view which shows a mechanism. Similarly, it is an external appearance bottom view seen from the downward direction. Similarly, it is a top view of an embodiment of a single base plate of the bicycle head lock device of the present invention. Similarly, it is a bottom view showing a single body of the casing body of the bicycle head lock device of the present invention. Similarly, it is an exploded perspective view of a constant torque rotation support member of the bicycle head lock device of the present invention. Similarly, it is a top view which shows a single body of the transmission lock mechanism housing which comprises a part of bottom plate of the bicycle head lock apparatus of this invention, and mounts a transmission lock mechanism. It is sectional drawing which follows the AA line of FIG. It is sectional drawing which follows the BB line of FIG. It is a top view of the rotation coupling body of a transmission lock mechanism. Similarly, it is a perspective view of a rotation coupling body. It is a perspective view explaining how to exchange an inner wire. It is a partially cutaway side view explaining the method of inner wire exchange and forced unlocking.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bicycle head locking device 2 Bottom plate 2a Protruding cylindrical part 2b Upper ball receiving bearing part 2c Flat plate part 2c1 Outer peripheral edge 2c11 Outer peripheral edge part shown by provisional line 2d Engaging protrusion 2e Housing part edge 3 Casing body 3a Rotating housing cavity Part 3b1 Lower stage bottom plate insertion recessed part 3b2 Upper inner diameter flange part insertion recessed part 3c Transmission lock mechanism accommodation cavity part 3c1 Accommodation cavity part outer peripheral side inner wall surface 3c2 Accommodation cavity part ceiling surface 3c21 Display drum recess accommodation part 3c22 Replacement recess accommodation part 3d engagement ring portion 3e partition wall 3f outer peripheral bottom surface 4 head tube 5 constant torque rotation support member 6 fork stem 7 bottom plate mounting hole 8 transmission lock mechanism 9 transmission lock mechanism housing 9a upper edge inner diameter flange 9b upper edge outer diameter flange 9c inside Bottom surface 9d Outer bottom surface 10 Rotating support 10a Hook 10a1 Clutch surface 10b Annular groove 11 Lock gear 1 a tooth portion 11b clutch surface 12 lock rod 13 C pressing ring 14 wave washer 15 screw hole for fixing the bottom plate 16 screw hole for fixing the transmission lock mechanism housing 17 screw for fixing the bottom plate 18 transmission lock mechanism housing mounting screw 19 transmission lock mechanism housing mounting hole 20a Bearing 20b Bearing 21 Rotating linkage 22 Shaft portion 22a Return spring winding shaft portion 23 Linking lever 23a Recessed seat 23b Introducing groove 23b1 Side wall surface 23b2 Side wall surface 23c11 Inner erection guide surface portion 23c12 Inner erection guide surface portion 23c21 Outer erection guide surface portion 23c21 Standing guide surface portion 23d Intermediate portion 23e Engagement portion 24 Display drum 24a Lock state indication 24b Open state indication 25 Operation rod 25a Tip engagement portion 26 Output crankpin 27 Return spring 28 Extrusion spring 29 Recess housing 30 Mounting screw hole 31 Transmission cable mounting portion 31a Mounting screw hole 32 Transmission cable 32a Outer wire 32b Inner wire 32b1 End stop ball 33 Transmission cable mounting bracket 33a Fixed connection portion 33b Screw portion 34 Lock nut 35 Operation hole 36 Rear wheel circle lock Operating section 37 Guide groove 38 Window 39 Cover plate 40 First nut 41 Second nut 42 Ball bearing

Claims (3)

  The lock gear of the constant torque rotation support member fixed to the fork stem that is rotatably supported by the bearing unit integrated with the head pipe, and the transmission lock mechanism housing integrated with the head pipe are related to the operation unit of the rear wheel lock. In the bicycle head lock device, in which the reciprocating lock rod is engaged to lock the rotation of the fork stem, an output crank linked to the lock rod is provided on the inner bottom surface of the recess housing portion of the transmission lock mechanism housing. A mounting screw hole corresponding to the tip of the linkage lever formed at the other end of the rotary linkage having a pin at one end is opened, and reciprocates in relation to the operation portion of the rear wheel lock through the mounting screw hole. The inner wire of the transmission cable is configured to be inserted inward, the tip of the inner wire is related to the tip of the linkage lever, and the mounting The operation rod hole is opened to the side with an appropriate distance from the hole, and the operation rod is inserted into the operation rod hole from the outside, and the linkage lever is operated to lock the device without disassembling the device. A bicycle head lock device that allows the inner wire to be exchanged by releasing the lock of the fork stem by forcible movement of the kite and disassociating the tip of the linkage lever and the tip of the inner wire.   2. The bicycle headlock device according to claim 1, wherein an inner erection guide surface portion inclined toward the proximal end side and an outer erection guide surface portion inclined toward the distal end side are formed on the upper surface on the distal end side of the recessed seat.   The bicycle head lock device according to claim 1, wherein an engaging portion that engages with a distal end engaging portion of the operating rod is formed at an intermediate portion between the distal end and the proximal end of the linkage lever.

Images