JP4248983B2 - Steering lock device - Google Patents

Description

  The present invention relates to a steering lock device that locks a handle shaft so as not to rotate in order to prevent theft in a motorcycle or the like.

Such a steering lock device is known, and generally a steering lock is attached to the head pipe from the outside of the vehicle body, and a lock pin that advances and retreats from the key cylinder of the steering lock is engaged with and disengaged from the handle shaft (patent) Reference 1).
JP 2000-219183 A

By the way, in the conventional steering lock device, the lock pin is exposed between the head pipe and the steering lock. For this reason, since it is not impossible to insert a tool from the outside and pry open the lock pin, it is necessary to increase the rigidity of the lock pin in order to obtain a more reliable anti-theft structure.
However, in this case, it is necessary to adopt a complicated structure in which the weight and cost are increased and the number of parts is increased.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to obtain a more reliable anti-theft structure without increasing the weight of a lock pin and without increasing the number of parts.

In order to solve the above problems, the present invention comprises a handle shaft rotatably supported by a head pipe provided at a front portion of a vehicle body frame, and a steering lock fixed to the vehicle body frame near the head pipe, In a steering lock device in which a lock member that advances and retreats from a steering lock is engaged with a handle shaft so that the handle shaft cannot be rotated, a lock cover is provided between the steering lock attached to the head pipe via a bracket and the handle shaft. The lock cover covers at least a part of a screw for attaching the bracket and the steering lock from the head pipe side, and the lock member is passed through the lock member, and a lock portion for fitting the tip of the lock member is provided. A protrusion formed on the outer periphery of the handle shaft, and the lock cover Is fastened to the bracket from the handle shaft side by bolts close to the handle shaft, the head of the bolt the bracket and Rokkukaba - located on the handle shaft side.

At this time, the bracket has a substantially U-shaped cross section and is attached to a part of the head pipe so as to surround the lock portion and the lock cover of the handle shaft when viewed from the axial direction of the handle shaft. A key cylinder portion that forms a part of the steering lock and moves the lock member forward and backward is attached to the outside.

A lock cover is provided between the steering lock and the handle shaft, and the lock member passes therethrough, so that the lock member can be hidden by the lock cover and the rigidity of the lock member is increased, so that the lock member can be inserted by inserting a tool from the outside. Can be difficult to pry up.
For this reason, it does not cause an increase in weight and is advantageous in terms of cost, and a more reliable anti-theft structure can be achieved without increasing the number of parts.

  Further, when the lock cover is attached to the steering lock from the handle shaft side, even if the lock cover is forcibly removed, the lock cover is obstructed by the handle shaft and is difficult to remove, so that a more reliable anti-theft structure is obtained.

Embodiments will be described below with reference to the drawings. First, an outline of the overall structure of a scooter type motorcycle to which the present invention is applied will be described with reference to FIGS.
FIG. 1 is a side view of the whole. A front fork 2 that supports a front wheel 1 is connected to a handle shaft 4 rotatably supported on a head pipe 3, and a handle bar 5 provided at an upper end of the handle shaft 4 is connected. Interlock with rotation.

  A down tube 6 extends rearward from the head pipe 3 obliquely downward, a rear frame 7 divided into left and right from the lower end thereof extends rearward, and a swing type power unit 9 swings on a rear frame rear portion 8 which is further raised in the rear half. The rear wheel 10 that is supported so as to be movable and supported at the rear end thereof is driven.

  A container 11 is supported on the rear frame rear portion 8, and a tandem seat 12 covers an opening opened above the rear frame so as to be freely opened and closed. A rear cushion 13 is provided between the rear side of the seat 12 and the swing type power unit 9.

  The periphery of the head pipe 3 and the down tube 6 is covered with a front cover 14 from the front and covered with a leg shield 15 from the rear. The front cover 14 has a front lower portion also serving as a front fender, and a headlight 16 is provided at the center of the front surface. The leg shield 15 is provided with a trunk 17 at the rear portion of the head pipe 3, and the lid 18 can be opened and closed from the rear seat 12 side.

  The handle bar 5 is covered with a handle cover 20, and front blinkers 21 are provided on the left and right sides of the front side. A floor cover 22 is provided on the front half of the rear frame 7, and the front part is connected to the rear end of the leg shield 15, and the rear part is connected to the front end of the rear cover 23.

  The rear cover 23 is a member that covers the rear part of the vehicle body below the seat 12 including the container 11. A carrier 24 that extends rearward from the rear end of the seat 12 is provided above the rear part of the rear cover 23. A rear cover is covered with a tail cover 25.

  A rear grip 26 and a side grip 27 are integrated with the carrier 24. A fuel tank 28 is supported on the rear side of the rear frame rear portion 8 below the rear portion of the seat 12, and an air cleaner 29 is disposed below the fuel tank 28. A suction duct 30 is provided forward from the rear end of the air cleaner 29 through the upper surface, and an intake port 31 is provided in the rear cover 23 in front of the front end.

Further, a cooling air duct 32 extending in the front-rear direction inside the floor cover 22 and the rear cover 23 is provided, and its front end opens to the rear of the front wheel 1 and its rear end opens to the vicinity of the front of the crankcase of the swing type power unit 9. ing.
Reference numeral 33 denotes a side stand, and 34 denotes a main stand, which is supported on the rear frame 7.

FIG. 2 is a plan view of the motorcycle. The headlight 16 is provided at the center of the front cover 14 in the width direction. Reference numeral 35 denotes a meter provided on the upper surface of the handle cover 20. The trunk 17 is formed in a horizontally long shape over substantially the entire vehicle width direction of the leg shield 15. Reference numeral 36 denotes a foot brake pedal.
The air intake 31 is a front opening of the rear cover 23 and is a slit that opens toward the front of the vehicle body that is located in the vicinity of the rear end of the floor cover 22. Yes.

  The rear grip 26 is formed along the rear end portion of the seat 12, and the side grip 27 is along the rear side surface of the seat 12. Each can be held by hand and constitutes a grab rail. 37 is a rear blinker, and 38 is a tail lamp.

  FIG. 3 is a front view of the upper part of the front cover 14 and the handle cover 20, and the headlight 16 is in a position overlapping the front upper part of the head pipe 3. The trunk 17 is provided in a horizontally long position so as to partially overlap the headlight 16 and overlap the head pipe 3.

  FIG. 4 shows the opposite side of FIG. 3, and a combination switch 40 is attached to the head pipe 3. The combination switch 40 is a known switch that has a key operation unit 41 exposed from the leg shield 15 and serves as both an ignition switch and a steering lock.

  Next, details of the combination switch 40 will be described. FIG. 5 shows a mounting structure of the combination switch 40. The combination switch 40 is integrally provided with a key operation part 41 and a key cylinder part 42, and is integrated with high rigidity so as not to be broken from the outside. The key cylinder portion 42 is attached to a bracket 43 made of a highly rigid metal from the head pipe 3 side (hereinafter referred to as the inner side) with screws 44 and 45 and bolts 46.

  The bolt 46 is inside the substantially U-shaped portion 47 integrally extending from the key cylinder portion 42 side, and is not exposed by being covered with the substantially U-shaped portion 47, and it becomes difficult to remove it from the outside forcibly. Yes.

  A substantially diamond-shaped lock cover 48 is attached to the inside of the upper portion of the bracket 43 by bolts 49 and 49 from the inside. A boss portion 50 that protrudes in a cylindrical shape is integrally provided at the center of the lock cover 48, and a lock pin 51 passes through the key cylinder portion 42. The lock pin 51 constitutes a lock member, which is advanced and retracted by operating the key cylinder portion 42 with a key, and is engaged with and disengaged from the handle shaft 4 supported by the head pipe 3.

  The bolt 49 is close to the handle shaft 4, and the side portions 43a and 43b on both sides are bent so that the bracket 43 is partially opened around the head pipe 3 and is wound, and in this state, the upper end of the head pipe 3 is moved. Since it is welded, the bolt 49 is not exposed by being surrounded by the main body portion and the side portions 43a and 43b of the bracket 43, and it is difficult to pry the tool from the outside and remove it.

  The key operation unit 41 is a shutter type, and the key hole 52 is closed by the shutter 52a. The shutter 52a is opened only when the magnet key 54 is released by the magnet key 54, and the key 55 can be inserted to operate the key. It has become. Reference numeral 56 denotes a knob for manually closing the key hole 52.

  FIG. 6 is a view showing the boss portion 50 from the axial direction. Since the screws 44 and 45 overlap under the lock cover 48 and the lock cover 48 is located in the vicinity of the handle shaft 4, Otherwise, it cannot be removed. Of these, some of the screws 44 come out of the lock cover 48, but it is still difficult to remove.

  7 is a cross-sectional view taken along line 7-7 in FIG. 6. The key cylinder portion 42 is abbreviated to a bracket 43 with a mounting portion 56 integrally formed on the side surface thereof, and is attached from the inside with a screw 45. The lock pin 51 passes through the pin hole 43 c provided in the bracket 43 and penetrates into the boss part 50. The boss portion 50 is thicker than the lock cover 48 and has high rigidity so as not to be broken, and is integrated with the lock cover 48 by welding.

  The screw 45 has a countersunk screw shape and is screwed into the bracket 43 flush with the lock cover 48 on the surface thereof. Further, when the lock pin 51 is retracted in the unlocked state, the tip of the lock pin 51 protrudes slightly from the boss portion 50 or the entire length protrudes into the boss portion 50.

  The protruding tip of the boss portion 50 is set to be near the tip of the lock portion 57 that is formed to protrude from the outer peripheral portion of the handle shaft 4. The lock portion 57 is set to coincide with the boss portion 50 when the handle shaft 4 is rotated to a predetermined interval such as a rotation limit.

  When the lock pin 51 is protruded inward when the boss portion 50 and the lock portion 57 coincide with each other, the handle shaft 4 is locked so as not to rotate by fitting the tip into a lock recess 58 provided in the lock portion 57. Is done.

  Next, the operation of this example will be described. As shown in FIG. 7, the lock pin 51 is always covered by the boss portion 50 so as to be almost entirely hidden, and it is difficult to pry the lock portion by trying to pry the lock portion 51 by moving the lock pin 51 from outside. ing. Further, in order to pry open the lock portion of the lock pin 51, the boss portion 50 must first be destroyed. However, since the boss portion 50 has a very high rigidity, it is difficult to break it in a relatively short time. It is.

Therefore, even if the lock pin 51 remains the same as the conventional one, it is difficult to pry open the lock portion, so that a more reliable anti-theft structure can be realized, the lock pin 51 is made highly rigid, and the weight and cost are increased. The conventional one can be used as it is without using a special locking device.
Moreover, since the boss portion 50 can be provided simply by attaching the lock cover 48, the structure can be made effective in preventing theft with a simple structure, and the number of parts can be relatively small.

  Further, since the handle shaft 4 obstructs the removal of the lock cover 48 by attaching the lock cover 48 from the inside, the lock cover 48 cannot be removed unless the handle shaft 4 is first removed. Therefore, a relatively long work is required, and the work cannot be removed in a short time, so that a more effective anti-theft structure is obtained.

  In addition, since the lock cover 48 covers the entire screw 45 and the other screw 44 also covers a part thereof, the key cylinder portion 42 can be made difficult to remove from the bracket 43.

The present invention is not limited to the above example, and various modifications and applications are possible within the principle of the invention. For example, the steering lock is not configured as a combination switch and may function alone.

Side view of a motorcycle to which the present invention is applied Top view of a motorcycle to which the present invention is applied Front view of the entire vehicle The figure which shows the whole vehicle body from the opposite side to FIG. Diagram showing the mounting structure of the combination switch Diagram showing the boss Shown to cross-sectional view of a portion taken along line 7-7 in FIG. 6

Explanation of symbols

1: front wheel, 3: head pipe, 4: handle shaft, 6: down tube, 7: rear frame, 8: rear half, 9: swing power unit, 10: rear wheel, 12: seat, 14: front cover, 15 : Leg shield, 16: Headlight, 17: Trunk, 18: Lid, 24: Carrier, 25: Tail cover, 40: Combination switch, 41: Key operation part, 42: Key cylinder part, 43: Bracket, 44: Screw 45: Screw, 48: Lock cover, 49: Bolt, 50: Boss part, 51: Lock pin

Claims (2)

A handle shaft rotatably supported by a head pipe provided at a front portion of the vehicle body frame and a steering lock fixed to the vehicle body frame near the head pipe are provided. In the steering lock device that makes the handle shaft non-rotatable by engaging with
A lock cover is provided between the steering lock attached to the head pipe via a bracket and a handle shaft, and the lock cover covers at least a part of a screw for attaching the bracket and the steering lock from the head pipe side, and the lock cover. The lock member is passed through, and a lock portion for fitting the tip of the lock member is formed on the outer peripheral portion of the handle shaft, and the lock cover is moved from the handle shaft side by a bolt close to the handle shaft. A steering lock device, characterized in that it is fastened to a bracket and the head of this bolt is located on the handle shaft side of the bracket and the lock cover .
The bracket has a substantially U-shaped cross section and is attached to a part of the head pipe so as to surround the lock portion and the lock cover of the handle shaft when viewed from the axial direction of the handle shaft, and the bracket is disposed outside the bracket. 2. A steering lock device according to claim 1, further comprising a key cylinder portion which forms a part of a steering lock and advances and retracts the lock member .

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