JP4840009B2 - Motorcycle handle lock device - Google Patents

Description

  The present invention relates to a handle lock device for a motorcycle that restrains rotation of a steering shaft.

  2. Description of the Related Art Conventionally, in motorcycles, a handle lock device is provided to prevent theft, and this handle lock device is a lock formed on a steering shaft that is rotatably fitted to a head pipe provided in front of a vehicle body frame. The rotation of the steering shaft is constrained by engaging a lock bar, which is provided in the cylinder lock so as to be able to appear and retract.

Such a conventional handle lock device includes, for example, a structure in which a guide member for guiding a lock bar of a cylinder lock is fixed to a head pipe by welding integrally with a mounting bracket (for example, a patent Reference 1), the key cylinder part, the lock cover boss part for guiding the lock pin of the key cylinder part, and the bracket are formed separately, and the bracket is sandwiched between the lock cover and the key cylinder part. In addition, those having a structure for fixing together (for example, see Patent Document 2) are known.
Japanese Patent No. 3626555 Japanese Patent Laid-Open No. 2005-88802

  However, in the above-described handle lock device of Patent Document 1, since the guide member and the mounting bracket are integrated by welding, the dimensional accuracy of the guide member is reduced due to thermal strain during the welding. Therefore, in order to absorb this dimensional accuracy, it is necessary to provide a large gap between the lock bar and the guide member. This prevents the guide member from smoothly guiding the lock bar, and the performance of the guide member. There has been a problem of lowering. In addition, since there are many welding locations, it takes time to assemble and there is a problem that it is difficult to reduce costs.

  On the other hand, in the above-described handle lock device of Patent Document 2, when the bracket is sandwiched between the lock cover and the key cylinder portion and fastened together, it is necessary to position these three members at the same time. Since the lock cover and the boss part must be arranged in the gap, there is a problem that it takes skill to assemble and is very troublesome. In addition, there is a gap between the boss portion and the head pipe, and the lock pin is exposed through the gap, so that there is a problem that the crime prevention performance cannot be sufficiently improved.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a handle lock device for a motorcycle that is easy to assemble and can improve dimensional accuracy and crime prevention performance.

  In order to achieve the above-described object, the present invention provides a lock bar provided in a lock portion formed on a steering shaft that is rotatably fitted to a head pipe provided in front of a vehicle body frame so as to be able to appear and retract in a cylinder lock. Is a handle lock device for a motorcycle that restricts the rotation of the steering shaft, and the cylinder lock is fastened to a mounting bracket provided on the head pipe and surrounds the lock bar. The guide sleeve is provided separately from the cylinder lock, and the base end portion of the guide sleeve is fitted into a support hole formed coaxially with the lock bar in the main body case of the cylinder lock and fixed. It is characterized by.

  And the front-end | tip part of the said guide sleeve is good to be supported by the said head pipe.

  The main body case of the cylinder lock may include light alloy die casting, and the guide sleeve may include iron.

  According to the present invention, since the guide sleeve is provided so as to surround the lock bar, it is possible to reliably prevent a theft act that tries to retreat the lock bar from the lock portion by piling a tool or the like from the outside. The crime prevention performance can be improved.

  In addition, the guide sleeve is fitted and fixed in a support hole formed coaxially with the lock bar, so that it can be mounted with high accuracy (coaxiality) on the lock bar with a minimum gap. The lock bar can be guided. Therefore, the lock bar can be smoothly moved in and out without rattling, and the durability of the cylinder lock can be increased.

  Furthermore, when the tip end portion of the guide sleeve is supported by the head pipe, the lock bar is completely covered by the guide sleeve, so that the crime prevention performance can be further improved.

  Furthermore, when the guide sleeve includes iron, the rigidity of the guide sleeve can be increased, so that the crime prevention performance can be further improved, and the main body case of the cylinder lock includes light alloy die casting. If it is, productivity can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  First, a scooter type motorcycle to which a handle lock device according to an embodiment of the present invention is applied will be described with reference to FIG. Here, FIG. 1 is a left side view showing the motorcycle according to the embodiment of the present invention.

  The motorcycle 1 is provided with a body frame 2 constituting a framework. A head pipe 3 is provided in front of the vehicle body frame 2, and a down tube 4 extends from the head pipe 3 obliquely rearward and downward.

  The head pipe 3 is provided with a front fork 6 that pivotally supports the front wheel 5 at the lower end and a steering shaft 8 with a handle bar 7 provided at the upper end. The front wheel 5 is rotated left and right by steering the handlebar 7. A handle lock device 10 having a cylinder lock 9 is supported on the side surface of the head pipe 3. The handle lock device 10 will be described later.

  The periphery of the head pipe 3 and the down tube 4 is covered with a front cover 11 from the front and covered with a leg shield 12 from the rear. The leg shield 12 is provided with an inner rack 13 behind the head pipe 3. It has been. Further, the handle bar 7 is covered with a handle cover 14.

  On the other hand, a swing type power unit 15 is connected to the rear lower part of the body frame 2, and a rear wheel 16 is pivotally supported at the rear end of the power unit 15. An article storage chamber 17 for storing helmets, luggage, tools, and the like is provided above the rear wheel 16. An operation seat 18 that also serves as a lid for the article storage chamber 17 is provided above the article storage chamber 17. It can be opened and closed freely. The rear portion of the vehicle body frame 2 is covered with a rear frame cover 19 so that the appearance of the vehicle body is adjusted.

  Further, a step board 20 is formed between the head pipe 3 and the driving seat 18 so as to be largely bent downward in a substantially U shape and on which the driver puts his / her foot.

  Next, a motorcycle handle lock device according to an embodiment of the present invention will be described with reference to FIG. Here, FIG. 2 is a plan view including a partially broken section showing the handle lock device of the motorcycle according to the embodiment of the present invention.

  The handle lock device 10 restrains rotation of the steering shaft 8 by engaging a round bar-like lock bar 21 provided in the cylinder lock 9 so as to be able to appear and retract, in a lock hole 22 formed on a side surface of the steering shaft 8. It is configured as possible.

  The cylinder lock 9 includes a light alloy die-cast main body case 24 having a built-in ignition switch 23. The main body case 24 has a flange portion 25 formed on the head pipe 3 side and faces the head pipe 3. A support hole 26 is formed coaxially with the lock bar 21. A cylindrical iron guide sleeve 27 provided separately from the cylinder lock 9 is fitted in the support hole 26 so as to surround the lock bar 21, and both sides of the outer peripheral portion of the base end portion of the guide sleeve 27 are fitted. The outer groove 28 is formed in a straight line. A linear inner groove 29 is formed in the inner peripheral portion of the support hole 26 facing the outer groove 28, and a linear spring pin is engaged with the inner groove 29 and the outer groove 28. By driving 30, the guide sleeve 27 is fixed to the body case 24 of the cylinder lock 9.

  On the other hand, a mounting bracket 31 is fixed to the side surface of the head pipe 3, and the end of the mounting bracket 31 on the cylinder lock 9 side is bent at a substantially right angle to form a mounting portion 32. A through hole 33 through which the lock bar 21 and the guide sleeve 27 can freely pass is formed. The head pipe 3 is formed with a locking hole 34 at a position corresponding to the locking hole 22 of the steering shaft 8 so that the lock bar 21 can pass therethrough and the front end of the guide sleeve 27 can be locked.

  Therefore, when the mounting portion 32 of the mounting bracket 31 and the flange portion 25 of the main body case 24 are fastened by the bolt 35 or the like, the cylinder lock 9 is fixed to the head pipe 3 and the tip portion is locked to the locking hole 34. As a result, the guide sleeve 27 is supported by the head pipe 3, and the leading end portion of the lock bar 21 is engaged with and disengaged from the lock hole 22 as the lock bar 21 moves in and out.

  Next, the operation of the handle lock device for a motorcycle according to the embodiment of the present invention will be described with reference to FIGS.

  First, when the handle lock device 10 is not operating, the tip of the lock bar 21 of the cylinder lock 9 is in a position retracted from the lock hole 22 of the steering shaft 8 as shown by a two-dot chain line in FIG. By steering the handle bar 7, the front wheel 5 can be rotated left and right.

  When operating the handle lock device 10 and operating the cylinder lock 9 so that the lock bar 21 protrudes with the key 36, the lock bar 21 slides in the distal direction along the guide sleeve 27, and in FIG. As indicated by the solid line, the distal end portion of the guide sleeve 27 engages with the lock hole 22. As a result, the rotation of the steering shaft 8 is restricted, the handle bar 7 cannot be steered, and the front wheel 5 cannot be rotated.

  As described above, in the handle lock device 10 according to the above-described embodiment, since the outer periphery of the lock bar 21 is completely covered with the iron guide sleeve 27, a tool or the like is inserted from the outside to lock the lock bar 21 into the lock hole 22. It is possible to surely prevent a theft attempt to evacuate.

  Further, since the guide sleeve 27 is fitted and fixed in the support hole 26 formed coaxially with the lock bar 21, it can be attached to the lock bar 21 with high accuracy (coaxiality). The lock bar 21 can be guided by a limited gap. Therefore, the lock bar 21 can be smoothly moved in and out without rattling, and the durability of the cylinder lock can be increased.

  Further, the guide sleeve 27 is fixed to the cylinder lock 9 by a spring pin 30. Furthermore, the cylinder lock 9 is fastened to the mounting bracket 31 with a bolt 35 or the like after the guide sleeve 27 is assembled. No skill is required for attaching the members, and the assembly work can be simplified.

  Furthermore, as described above, by making the guide sleeve 27 an iron cylindrical body, high crime prevention performance can be exhibited, while the main body case 24 of the cylinder lock 9 is made of a light alloy die-cast having high productivity. As a result, productivity can be improved.

  The material of the main body case 24 and the guide sleeve 27 of the cylinder lock 9 is not limited to the materials described above, and the main body case 24 may be made of another material with high productivity, and the guide sleeve. 27 may be made of another material having high rigidity.

  Furthermore, in the above-described embodiment, the case where the present invention is applied to a scooter type motorcycle has been illustrated and described. However, this is merely an example, and the present invention may be applied to other motorcycles. It goes without saying that it is possible.

1 is a left side view showing a motorcycle in an embodiment of the present invention. 1 is a plan view including a partially broken surface showing a handle lock device for a motorcycle according to an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Motorcycle 2 Body frame 3 Head pipe 8 Steering shaft 9 Cylinder lock 10 Handle lock device 21 Lock bar 22 Lock hole 24 Body case 26 Support hole 27 Guide sleeve 31 Mounting bracket

Claims (3)

By engaging a lock bar formed in a cylinder lock so as to be able to protrude and retract in a lock portion formed in a steering shaft that is rotatably fitted to a head pipe provided in front of the vehicle body frame, the rotation of the steering shaft is achieved. A handle lock device for a motorcycle that restrains movement,
In the cylinder lock, a body case is formed by light alloy die casting, a flange portion is formed on the head pipe side in the body case, a mounting bracket is formed on a side surface of the head pipe, and the cylinder of the mounting bracket is formed. An attachment portion is formed at an end of the lock side, and the cylinder lock is fixed to the head pipe by fastening the attachment portion and the flange portion, and an iron guide sleeve surrounds the lock bar. Provided separately from the main body case of the cylinder lock, and the base end portion of the guide sleeve is fitted and fixed to a support hole formed coaxially with the lock bar in the main body case of the cylinder lock. A motorcycle handle lock device characterized by the above. The handle lock device for a motorcycle according to claim 1, wherein a distal end portion of the guide sleeve is supported by the head pipe. An outer groove is formed on the outer peripheral portion of the guide sleeve, an inner groove is formed on the inner peripheral portion of the support hole facing the outer groove, and a spring pin is engaged with the inner groove and the outer groove. The handle lock device for a motorcycle according to claim 1 or 2, wherein the guide sleeve is fixed to a main body case of the cylinder lock by driving in .

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