JPH11115841A - Theft preventing device for motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of forced breakdown of a main switch by providing a protecting member freely to be moved between a protecting position, in which a key hole of a main switch 4 is covered, and an open position, in which a key can be inserted, and fixing this protecting member to the protecting position. SOLUTION: A protecting member 9 freely to be moved between a protecting position close to a key hole 3a, in which a key hole 3a is covered, and an open position, in which a key can be inserted into the key hole 3a, is provided near a main switch 3 at a car body frame side. A lock device 10 for hindering the movement of the protecting member 9, which is positioned at the protecting position, is provided. When the protecting member 9 is fixed to the protecting position, the key hole 3a of the main switch 3 is covered with the protecting member 9 so as to prevent the intrusion of a screwdriver or the like into the key hole 3a. In the condition that the key is inserted into the key hole 3a, since the movement of the protecting member 9 to the protecting position is hindered by the key 3, generation of a condition that the key 3 is left as it is inserted into the key hole 3a when a user leaves a motorcycle is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motorcycle anti-theft device for protecting a key hole of a main switch.

[0002]

2. Description of the Related Art As a conventional anti-theft device for a motorcycle, there is a handle lock device which prevents rotation of a steering wheel and makes it impossible to travel. This handle lock device,
After turning the steering handle in one direction and turning the key inserted into the main switch to the lock position, the lock pin protrudes from the case of the main switch, and this lock pin engages with the steering handle. I have.

[0003] In addition to the handle lock device, there is a main stand lock device for fixing the main stand in an upright state, etc. in order to prevent the motorcycle from being stolen.

[0004]

However, even if the vehicle is locked by the handle lock device, the vehicle may be stolen. This is because a driver or the like is forcibly pushed into the key hole of the main switch, and the key cylinder is forcibly turned, whereby the handle lock is released and the engine may be started. Even if the vehicle body is not stolen, the main switch is destroyed and the vehicle cannot travel, resulting in serious damage.

In addition, the main stand lock device is inconspicuous, and it is often impossible for a third party to visually recognize that the anti-theft measures have been taken, so that the third party cannot notice that the theft cannot be stolen. Without destroying the main switch.

When the main stand lock device is used to prevent theft, since the mechanism for releasing the antitheft device is different from the main switch, the owner sometimes forgets to release the device and performs a traveling operation. Was. In this case, the running operation must be stopped to release the antitheft measure, which is very troublesome. That is, as the mechanism becomes more complicated to prevent theft, the number of operations performed by the driver increases, and the handling of the vehicle body becomes more troublesome.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a motorcycle anti-theft device which can prevent a main switch from being destroyed. Another object of the present invention is to prevent the lock from being forgotten during a traveling operation in order to prevent theft.

[0008]

According to the present invention, there is provided a motorcycle anti-theft device, comprising: a protection position for covering a key hole of the main switch close to the vehicle body frame near the main switch; A protection device is provided which is movable between an open position where the key can be inserted and a locking device which stops the protection member at the protection position.

According to the present invention, by fixing the protection member at the protection position, the key hole of the main switch is covered with the protection member, so that nothing can be inserted into the key hole. Further, when the key is inserted into the key hole, the key is in the way and the protection member cannot be moved to the protection position.

A motorcycle anti-theft device according to another aspect of the present invention is the motorcycle anti-theft device according to the above-described invention, wherein the movable member that moves for traveling is moved by an operation of stopping the protection member at the protection position. A lock mechanism is provided to prevent the vehicle from running. According to the present invention, by performing an operation of protecting the key hole of the main switch, the vehicle body can be made in a state in which the vehicle body cannot travel by the lock mechanism.

According to another aspect of the present invention, there is provided the motorcycle anti-theft device according to the above-described invention, wherein the protection member is movably provided inside a vehicle body cover which covers a periphery of the main switch. In the vicinity of the member, an operation lever formed separately from the protection member and having one end protruding outside the vehicle body cover is movably provided, and the protection member is urged toward the open position by a spring, and the operation lever is moved. The protection member is engaged with the protection member so as to act only in the direction from the open position side to the protection position side of the protection member.

According to the present invention, the protection member and the supporting portion of the operation lever can be covered with the vehicle body cover. Also, since the protection member cannot be turned from the protection position to the open position by the operation lever, even if a third party moves the operation lever while the main switch is protected by the protection member, the key hole of the main switch is not opened. Cannot be released.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION

First Embodiment Hereinafter, one embodiment of a motorcycle anti-theft device according to the present invention will be described in detail with reference to FIGS. FIG.
FIG. 2 is a rear view showing a main part of a scooter equipped with the motorcycle anti-theft device according to the present invention, FIG.
Is a rear view showing a state in which the vehicle body covers are removed, and FIG. 4 is a side view of the same.

In these figures, reference numeral 1 denotes a scooter according to this embodiment, reference numeral 2 denotes a steering handle of the scooter 1, and reference numeral 3 denotes a main switch. The steering handle 2 is covered with a handle cover 4 and a head pipe 6 is provided via a steering shaft indicated by reference numeral 5 in FIGS.
To be rotatably supported.

The main switch 3 is attached to the head pipe 6 via a bracket 7 and has a key hole 3a.
And all except the periphery of the key hole 3a is a leg shield 8
(Body cover). Also, the main switch 3
Is inclined with respect to the head pipe 6 so that the axis of the key cylinder portion 3b is directed upward and rearward.

One end of a protection member 9 made of a U-shaped metal rod is pivotally connected to a portion of the key cylinder portion 3b on the rear side of the vehicle body. The protection member 9 penetrates through the leg shield 8 and is connected to the key cylinder portion 3b so that the protection member 9 can freely swing outside the leg shield 8 around the pivotal joint (ball joint). ing. The other end of the protection member 9 is locked to the locking device 10 of the steering shaft portion 5 by standing up so as to cover the key hole 3a of the main switch 3 from above as shown by a solid line in the drawing. I am trying to be.

Further, the protection member 9 is provided with a projection 9 which covers the upper part of the key hole 3a in the upright state as described above.
a is provided. As shown in FIGS. 2 and 4, the protrusion 9 a has a key hole 3 a larger than the protrusion size of the key 3 c inserted into the key hole 3 a when one end of the protection member 9 is locked to the locking device 10. And are formed so as to face each other.

When the protection member 9 is erected such that the projection 9a covers the key hole 3a from above, the protection member 9 is raised.
Is hereinafter referred to as a protection position. Further, as shown by a two-dot chain line in the figure, the position of the protection member 9 when the protection member 9 comes off from above the key hole 3a and the key 3c can be inserted into the key hole 3a is opened below. It is called position. Note that the protection member 9 positioned at the open position
Is engaged with a hook 8a (see FIGS. 1 and 2) formed integrally with the leg shield 8 and housed in this position.

The locking device 10 includes a steering shaft 5
A key cylinder 10a having a key hole and a locking port 10b into which the other end of the protection member 9 is inserted,
When the other end of the protection member 9 is inserted into the locking opening 10b, the protection member 9 is automatically locked and can be opened by rotating the key. The locking device 10 is fixed to the steering shaft 5 when the steering handle 2 is turned to the leftmost side of the vehicle body.
b are set to face each other. The locking device 10 is also covered with the handle cover 4 except for the key hole of the key cylinder 10a, the periphery of the key hole, and the periphery of the locking opening 10b.

The anti-theft device for a motorcycle constructed as described above is mounted on the body frame side near the main switch 3.
A protection member 9 is movably provided between a protection position for covering the key hole 3a of the main switch 3 in close proximity and an open position where the key 3c can be inserted into the key hole 3a, and the protection member positioned at the protection position is provided. Locking device 10 for preventing movement of member 9
By fixing the protection member 9 at the protection position, the key hole 3a of the main switch 3 is covered with the protection member 9 so that a driver or the like cannot be pushed into the key hole 3a.

When the key 3c is inserted into the key hole 3a, the key 3c is in the way and the protection member 9 cannot be moved to the protection position, so that the key 3c can be prevented from being forgotten.

Further, when the protection member 9 is positioned at a protection position for covering the key hole 3a of the main switch 3, the protection member 9 extends between the main switch 3 and the steering handle 2 so as to stand out. Therefore, it is possible to easily make a third party visually recognize that the anti-theft measures are taken. For this reason, it is possible to make a third party visually recognize that the theft is not easy and give up the theft.

In addition, since the other end of the protection member 9 is locked to the steering handle 2, the operation of protecting the key hole 3a of the main switch 3 locks the rotation of the handle. The vehicle body can be made unrunnable. In addition, since the locking device 10 is fixed to the steering handle 2 and the other end of the protection member 9 is locked and locked, the steering handle 2 when the protection member 9 is fixed at the protection position is provided. No matter where the position, that is, the mounting position of the locking device 10 to the steering handle 2, is set, the steering handle 2 can be prevented from rotating at all from that position. Therefore, the degree of freedom in setting the position of the steering handle 2 when the handle is locked is high. In addition, the structure for implementing the handle lock can be simple.

Here, an example in which the locking device 10 is fixed to the steering handle 2 is shown. However, for example, the locking device 10 is provided on the body frame side, and the other end of the rod-shaped protection member 9 is simply connected to the steering handle 2. And restricting the rotation thereof to a predetermined range. However, in this case,
It is preferable that the position of the steering handle 2 when the handle is locked is set to the position where the steering handle 2 is turned to the left and right.

Second Embodiment The anti-theft device for a motorcycle according to the present invention can also be configured as shown in FIGS. FIG. 5 is a side view of a scooter equipped with the anti-theft device according to the present invention, and FIG.
7 is a rear view of a main switch portion of the scooter, FIG. 7 is an enlarged view showing a mounting portion of a protective member, FIG. 7A is a plan view, and FIG. 7B is a line VII-VII in FIG. It is sectional drawing. FIG. 7A is drawn with the leg shield broken. 8A and 8B are views for explaining the operation of the protection member. FIG. 8A is a plan view showing a state in which the operation lever is operated to fix the protection member at the protection position, and FIG. (a) is a cross-sectional view taken along the line BB, (c) is a plan view showing a state in which the operation lever returns to the initial position, (d) is a cross-sectional view taken along the line DD in (c) of FIG. (E) is a plan view showing a state where the locking device is unlocked, and (f) is a cross-sectional view taken along line FF in (e) of FIG.

FIG. 9 is a sectional view taken along line IX-IX in FIG. 8A, FIG. 10 is a plan view of the unit swing type engine, FIG. 11 is a side view showing a locking mechanism at the rear of the unit swing type engine, and FIG. 11 is a cross-sectional view taken along the line XII-XII of FIG. 11, and FIG. 13 is a view for explaining the operation of the lock lever of the lock mechanism. FIG. FIG. 2B shows a state in which the outer peripheral cylindrical body of the centrifugal clutch rotates in the reverse direction at the time of locking. In these drawings, the same or equivalent members as those described in FIGS. 1 to 4 are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the antitheft device according to this embodiment, the main switch 3 of the scooter 11 shown in FIG. 5 is protected by a plate-like protection member 12 as shown in FIG. 7, and this protection member 12 is positioned at the protection position. In this case, a lock mechanism, which will be described later, interlocks with the protection member 12 to prevent the vehicle body from being moved.

The scooter 11 according to this embodiment has a low-floor footrest 14 between the steering handle 2 and the seat 13.
And a unit swing type engine 16 that supports the rear wheel 15 below the seat 13. In FIG. 5, reference symbol A indicates a vehicle body frame.
Is composed of a head pipe 17, a down tube 18 extending obliquely rearward and downward from the head pipe 17, a pair of left and right rear pipes 19 extending downward from the rear end of the down tube 18 to the seat 13, and the like. The front fork 20 and the steering handle 2 are steerably supported, and the unit swing type engine 16 is connected to the rear pipe 19 via a link mechanism so as to be vertically swingable. Also, this unit swing type engine 16
A cushion unit 21 is interposed between the rear end of the rear pipe 19 and the rear pipe 19.

The protection member 12 is formed in a fan shape by a metal plate as shown in FIG.
Support plate 2 of unit case 23 fixed together with main switch 3 to bracket 22 (see FIG. 5) fixed to
3a is rotatably mounted via a support shaft 24. The unit case 23 includes the support plate 23a and the vertical wall 23.
b and the support plate 23a formed substantially in the same shape as the support plate 23a.
The cover member 23d is mounted on the vertical wall 23b and screwed on by the three screw bosses 23c of FIG.

The support shaft 24 is located at the center of the fan, which is the shape of the protection member 12, and is disposed on the vehicle body front side of the main switch 3. The support plate 23a has a hole 23e fitted around the key hole of the main switch 3 so that the key hole 3a of the main switch 3 is exposed on the upper surface side. The key hole 3a of the main switch 3 faces the holes 8b and 23f provided in the leg shield 8 and the cover member 23d, respectively.

The protective member 12 is provided with a mask portion 1 for covering the key hole 3a of the main switch 3 from above.
2a is formed at one end, and a wire 25 for driving a lock mechanism described later is connected to the other end. This wire 25 engages the front end of the outer wire with the support plate 23a and connects the connecting member 25 pivotally attached to the protection member 12.
The front end of the inner wire is connected to a. The inner wire of the wire 25 is always under tension by a lock mechanism described later. That is, by connecting the inner wire to the protection member 12, the protection member 12 is urged counterclockwise in FIG.

As shown in FIG. 9, the mask portion 12a is formed by partially expanding one end of the protection member 12 upward. When the mask portion 12a is eccentrically displaced upward, the main switch 3 can be mounted on the upper side by the eccentricity dimension, so that the key length can be shortened. In this embodiment, FIG.
As shown in FIG. 7A, the position of the protection member 12 when the mask section 12a covers the main switch 3 from above is referred to as a protection position. As shown in FIG. The position of the protection member 12 when the keyhole 3a is exposed by being pulled is referred to as an open position.

To turn the protection member 12 from the open position shown in FIG. 7A to the protection position, an operation lever indicated by reference numeral 26 in FIG. 7A is used. The operation lever 26 is rotatably supported on the support plate 23a by the support shaft 24. The operation lever 26 has a long hole 23g formed in the vertical wall 23b of the unit case 23 and a long hole formed in the leg shield 8 in accordance with the long hole 23g. One end having a knob 26a extends outside the leg shield 8 through 8c, and a return tension coil spring 27 is interposed between the other end in the leg shield 8 and the support plate 23a. The tension coil spring 27 urges the operation lever 26 in the counterclockwise direction in FIG.

The operation lever 26 is connected to the support shaft 24.
And a long hole 2 formed in the vertical wall 23b of the unit case 23.
3g is formed in an arc shape so as to be fitted to the outer peripheral wall of the mask portion 12a of the protection member 12 from the side opposite to the main switch 3. FIG.
In FIG. 19A, reference numeral 28 is provided on the back side of the support plate 23a.
Is a locking device for keeping the protection member 12 at the protection position. The locking device 28 includes the support plate 23
A stopper 29 is urged by a spring to protrude upward from a, and a key cylinder 30 (see FIG. 6) for lowering the stopper 29 is fixed to the support plate 23a. The key hole 3 of the key cylinder 30
The portion 0a is exposed outside the leg shield 8.

The position of the stopper 29 is shown in FIG.
When the protection member 12 is positioned at the open position as shown in FIG. 8A and overlaps with the protection member 12 in plan view, and when the protection member 12 is positioned at the protection position as shown in FIG. The position is set so as to move upward and engage with the edge of the protection member 12.

According to the anti-theft device constructed as described above, the key hole 3a of the main switch 3 is protected by removing the key from the main switch 3 and then turning the operation lever 26 clockwise in FIG. It can be covered with a member 12. That is, as shown in FIG.
Turning the operation lever 26 clockwise against the tensile force of the tension coil spring 27 and the tensile force acting on the wire 25 in a state where the operation lever 26 is engaged with the outer peripheral wall of the mask portion 12 a of the protection member 12, FIG. As shown in ()), the protection member 12 rotates in the same direction, and the mask portion 12a is positioned at the protection position that covers the key hole 3a.

When the protection member 12 is positioned at the protection position, the stopper 29 of the locking device 28 is disengaged from the lower surface of the protection member 12 as shown in FIG. 8B, and is above the protection member 12 by the elastic force of the spring member. Project to When the stopper 29 protrudes in this manner, the protection member 12
Cannot be returned to the open position shown in FIG. 7A, and is fixed at the protection position.

Thereafter, when the hand is released from the operation lever 26,
As shown in FIG. 8C, the operation lever 26 is brought into contact with one end of a long hole 23g formed in the vertical wall 23b of the unit case 23 by the tensile force of the tension coil spring 27, in other words, up to the initial position. Turn counterclockwise.

By covering the key hole 3a of the main switch 3 with the protective member 12 as described above, it becomes impossible to push a driver or the like into the key hole 3a, so that it is possible to prevent the main switch 3 from being broken. it can.

The key 31 can be inserted into the key hole 3a by inserting the key 31 into the key cylinder 30 of the locking device 28 and lowering the stopper 29 as shown in FIG. Do. That is, when the stopper 29 is lowered as shown in FIG.
8 rotates counterclockwise by the pulling force of the wire 21 until the outer peripheral wall of the mask portion 12a contacts the arc-shaped portion of the operation lever 26 in FIG. As a result, the key hole 3a is exposed, and the key 31 can be inserted here.

Therefore, not only can the main switch 3 be protected by the protection member 12, but also the support portions of the protection member 12 and the operating lever 26 are covered by the unit case 23 and the leg shield 8, so that these can be protected by a third party. Destruction can also be prevented. Also,
The operation lever 26 operates only when the protection member 12 rotates from the open position side to the protection position side, and when the protection member 12 is positioned at the protection position, the engagement is released. The operation lever 26 exposed outside the leg shield 8 in the state where the protection of 3 is performed.
Even if is moved by a third party, the protection member 12 cannot be turned to the open position. Therefore, the main switch 3 can be reliably protected.

Next, the lock mechanism connected to the protection member 12 via a wire 25 will be described in detail. The locking mechanism is a unit swing type engine 16 shown in FIG.
The structure which prevents rotation of the rear wheel 15 is adopted. As shown in FIG. 10, the unit swing type engine 16 includes a crankcase 43 supporting a cylinder 41 and a crankshaft 42, a transmission case main body 44 integrally formed with the crankcase 43, and a transmission case main body 44. A transmission case cover 45 attached to the side; a soundproof cover 46 covering the transmission case cover 45;
The crankcase 43 is pivotally supported on the rear pipe 19 of the vehicle body frame A via a link mechanism so as to be vertically swingable. A sound absorbing material 48 is interposed between the soundproof cover 46 and the transmission case cover 45 as shown in FIG.

The transmission case body 44 is formed so as to open toward the left side of the vehicle body and extend rearward of the vehicle body, and together with the transmission case cover 45 attached thereto, constitutes a transmission case of this unit swing type engine. . The rotation of the crankshaft 42 is transmitted to the rear wheel 15 inside the transmission case.
A transmission 47 for transmitting the power to the power transmission is accommodated. The lower end of the cushion unit 21 is pivotally supported at the rear end of the transmission case.

The transmission 47 is, as shown in FIG.
It comprises a belt type continuously variable transmission 49, a centrifugal clutch 50, a gear type speed reducer 51, an axle 52 on which the rear wheel 15 is mounted, and the like. The V-belt type continuously variable transmission 49 has a conventionally well-known structure in which the rotation of the crankshaft 42 is transmitted to a driven pulley 54 via a V-belt 53.

As shown in FIG. 12, the centrifugal clutch 56 rotates together with the driven pulley 54, and when the rotation speed reaches a predetermined value, the centrifugal clutch 50 It has a pressure contact structure. The input shaft 51a of the gear type speed reducer 51 is connected to the axis of the outer peripheral cylindrical body 57. The gear-type speed reducer 51 adopts a structure in which the rotation of the input shaft 51a is reduced at two places and transmitted to the axle 52.

In the rear wheel drive system thus configured, the members from the outer peripheral cylinder 57 to the axle 52 of the centrifugal clutch 50 rotate in conjunction with the rotation of the rear wheel 15 even when the centrifugal clutch 50 is not connected. I do. At this time, among the members that rotate together with the rear wheel 15,
Rotation speed is the fastest.

The lock mechanism interlocked with the protection member 12 is formed so as to prevent the rotation of the outer cylindrical body 57. This locking mechanism is indicated by reference numeral 61 in the figure. The lock mechanism 61 includes a support shaft 62 rotatably mounted on an upper portion of a rear outer surface of the transmission case cover 45, and a support shaft 62.
Lock lever 63 welded to the inner end of the cover
A wire connecting arm 64 fixed to the other end of the support shaft 62 and connecting the rear end of the inner wire of the wire 25; and the arm 64 and the transmission case cover 45.
And a torsion spring 65 for urging the arm 64, the support shaft 62 and the lock lever 63 clockwise in FIG.

The support shaft 62 has an axial direction of the outer peripheral cylindrical body 5.
The transmission case cover 45 is rotatably supported by the transmission case cover 45 so as to be parallel to the axis of the axle 7 and the axle 52 and penetrate the transmission case cover 45. The lock lever 63 has a locking piece 63a extending from the support shaft 62 to the outer peripheral cylindrical body 57 side, and a claw piece 63b extending to the opposite side to the locking piece 63a, and rotates clockwise in FIG. As a result, the claw piece 63b is moved to the rear projection 45a on the inner surface of the transmission case cover 45.
And the locking piece 63a is positioned forward of the outer cylindrical body 57 with respect to the outer cylindrical body 57. By turning in the opposite direction, the claw piece 63b abuts on the front side projection 45b of the transmission case cover 45, and the locking piece 63a is connected to the outer cylindrical body. 57 is formed on the left side of the vehicle body so as to overlap with the outer peripheral cylindrical body when viewed from the side.

In this embodiment, the locking piece 63a is rotated counterclockwise in FIG. 11 so that the locking piece 63a is positioned inside the movement locus of the pin 66 protruding from the left end surface of the outer cylindrical body 57 on the vehicle body. I'm facing. As described above, when the locking piece 63a enters the inside of the movement locus, the locking piece 63a is engaged with the pin 66 from the front side in the rotation direction of the outer cylindrical body 57. Here, the rotation direction is a direction in which the outer peripheral cylinder 57 rotates when the rear wheel 15 is rotated so that the vehicle body moves forward. This rotation direction is indicated by an arrow R in FIG. The pins 66 are formed by partially projecting the end surface of the outer peripheral cylindrical body 57 into a cylindrical shape by pressure molding, and a plurality of the pins 66 are arranged at equal intervals in the circumferential direction of the outer peripheral cylindrical body 57.

That is, when the locking piece 63a enters inside the movement locus of the pin 66, the pin 66 comes into contact with the locking piece 63a when the outer peripheral cylindrical body 57 rotates in the forward or backward direction. No more rotation is possible. A cam surface 67 is formed at the tip of the locking piece 63a, as shown in FIGS. 11 and 13, so that the locking piece 63a can be smoothly moved even when the pin 66 is located at the destination of the locking piece 63a. The moving trajectory can be moved inside.

The cam surface 67 is an inclined surface such that the width of the locking piece 63a becomes gradually smaller toward the distal end side of the locking piece 63a. As shown in FIG. When the pin 66 located at the movement destination of 63 a hits the cam surface 67, the pin 66 slides on the cam surface 67 and is pressed downward. Further, as shown in FIG. 13B, when the pin 66 contacts the side surface of the locking piece 63a, the pin 66 is pushed upward by the movement of the locking piece 63a. It should be noted that the pressing of the pin 66 by the cam surface 67 as shown in FIG. 13A can be avoided only when the vehicle body is parked using the main stand 68 as shown in FIG. .

Outside the wire connecting arm 64,
As shown in FIGS. 11 and 12, a sheet metal cover 69 is provided to prevent the lock mechanism 61 from being broken by a third party. The cover 69 is formed so as to cover the entire range of the rotation range of the wire connecting arm 64 from the portion of the wire 25 that holds the rear end of the outer wire. It is fixed to the outer surface.

The wire 25 whose rear end is connected to the wire connecting arm 64 is formed between the transmission case cover 45 and the soundproof cover 46 and at the front end of the soundproof cover 46 as shown in FIG. Hole 71 and air cleaner 7
2 and the inside of the vehicle body cover 73 as shown in FIG. 5, and is connected to the protection member 12 on the main switch 3 side.

When the lock mechanism 61 is formed as described above,
When the vehicle body is standing on the main stand 68 as shown in FIG. 5, the operation lever 26 of the main switch 3 is moved clockwise from the position shown in FIG. 7A to the position shown in FIG. By turning, the rear wheel 15 can be locked. That is, by operating the operation lever 26 as described above, the protection member 12 rotates in the same direction, the mask portion 12a covers the key hole 3a of the main switch 3, and the inner wire of the wire 25 is pulled to lock the lock mechanism. The lock lever 63 of 61 rotates counterclockwise in FIG. 11, and the locking piece 63a enters the movement locus of the pin 66.

In the state where the locking piece 63a is moved as described above, when the outer cylindrical body 57 of the centrifugal clutch 50 rotates with the rear wheel 15 by moving the vehicle forward or backward, the pin 66 of the outer cylindrical body 57 is locked. It hits the piece 63a. For this reason, the rear wheel 15 is locked.

Therefore, in this state, the key hole 3a of the main switch 3 is covered with the protective member 12, so that a driver or the like cannot be inserted into the key hole 3a, and the lock mechanism 61 is locked to the rear wheel 15 Can no longer be rotated. That is, both the protection of the key hole 3a and the lock of the vehicle body can prevent theft. Note that even when the vehicle body is set up on a side stand (not shown) without using the main stand 68,
The lock mechanism 61 can be locked. In this case, when the lock lever 63 moves, the locking piece 63a
When the vehicle hits the pin 66 of the centrifugal clutch 50, the lock lever 63 cannot be turned any further because the rear wheel 15 is in contact with the ground. At this time, the position of the pin 66 is shifted by slightly moving the vehicle body in the front-rear direction. I just need.

The locking device 28 on the main switch 3 side
Is released, the movement restriction of the front end of the inner wire in the wire 25 is released, the protection member 12 is turned to the open position, and the lock lever 63 of the lock mechanism 61 is moved to the position shown in FIG.
1, the locking piece 63a of the lock lever 63 is turned clockwise as shown by a two-dot chain line in FIG.
The outer peripheral cylinder 57 moves forward from the vehicle body. By the operation of the lock lever 63, the lock mechanism 61 is unlocked, and the scooter 11 can run.

Therefore, in the anti-theft device configured as described above, the rear wheel 15 can be locked by the operation of protecting the key hole 3a of the main switch 3, so that the operation is simple to prevent the double theft. Is fine.

In this embodiment, the axis of rotation of the lock lever 63 is parallel to the axis of the rear wheel 15, and the locking piece 63a
Is configured to engage with the pin 66 of the outer peripheral cylindrical body 57 of the centrifugal clutch 50 from the front side in the rotation direction of the outer peripheral cylindrical body 57. Therefore, the lock lever 63, the support shaft 62 supporting the lock lever 63, and the transmission case cover 45 And the like may have low rigidity. This is because the outer peripheral cylinder 57 has the largest diameter and rotates at a high speed among the members that rotate with the rear wheel 15. Therefore, the force for preventing the rotation of the outer peripheral cylinder 57 requires the rotation of the other rotating members. This is because it may be smaller than the force required for blocking.

Further, even if the inner wire is cut, the locking piece 63a is flipped forward in the rotation direction of the outer peripheral cylindrical body 57, so that it does not hinder the traveling.

In the second embodiment, the lock mechanism 61 has a structure in which the rear wheel 15 is prevented from rotating when locked, but the lock mechanism connected to the protection member 12 is a main stand when locked. It is also possible to adopt a structure for keeping the 68 in an upright state.

Third Embodiment To protect the keyhole of the main switch, the configuration shown in FIG. 14 can be adopted. FIG. 14 is a view showing another embodiment of the motorcycle anti-theft device according to the present invention. FIG. 14 (a) is an enlarged plan view showing a mounting portion of a protection member, and FIG. FIG. 3 is a sectional view taken along line BB in FIG. In this figure, the same or equivalent members as those described in FIGS. 1 to 13 are denoted by the same reference numerals, and detailed description is omitted.

The protection member 12 shown in FIG. 14 has a return tension coil spring 81 interposed between the end opposite to the main switch 3 and the support plate 23a of the unit case 23. The tension coil spring 81 urges the protection member 12 in the counterclockwise direction in FIG. Note that a lock mechanism as in the case of the second embodiment is not connected to the protection member 12.

The anti-theft device configured as described above is similar to that of FIG.
4, the protection member 12 covers and protects the key hole 3a of the main switch 3 by turning the operating lever 26 clockwise in the same drawing against the tensile force of the coil springs 27, 81 from the open state shown in FIG. Can be. Protection member 12
Is turned to the protection position covering the key hole 3a, the locking device 2
The stopper 29 of 8 protrudes upward and the protection member 12 is fixed at the protection position.

When the operator releases the operating lever 26 in this state, the operating lever 26 is pulled by the tensile force of the extension coil spring 27 so that the elongated hole 23 of the vertical wall 23 b of the unit case 23 is opened.
It turns until it hits one end of g, and returns to an initial position. To be able to insert a key into the key hole 3a,
What is necessary is just to unlock the locking device 28 with a key not shown.
At this time, the protection member 12 returns to the open position shown in FIG.

Therefore, not only can the main switch 3 be protected by the protection member 12, but also the support portions of the protection member 12 and the operation lever 26 are covered by the unit case 23 and the leg shield 8. Can be prevented from being destroyed by others.
When the operating lever 26 is released after turning the protection member 12 to the protection position, the operation lever 26 returns to the initial position alone by the tensile force of the tension coil spring 27. Therefore, the protection member 12 protects the main switch 3. Even if a third party moves the operation lever 26 exposed outside the leg shield 8 in this state, the protection member 12 cannot be turned to the open position. Therefore, the main switch 3 can be reliably protected.

[0067]

As described above, according to the present invention, by fixing the protection member at the protection position, the key hole of the main switch is covered with the protection member and nothing can be inserted into the key hole. Therefore, the main switch can be prevented from being destroyed, and the key cannot be inserted into the key hole, so that the traveling operation is not performed by mistake in the locked state. Further, when the key is inserted into the key hole, the key is in the way and the protection member cannot be moved to the protection position, so that it is possible to prevent the key from being forgotten to be removed.

According to another invention provided with a lock mechanism for stopping the movement of the movable member which moves for traveling by the operation of stopping the protection member at the protection position, thereby making the traveling state impossible. By performing the operation of protecting the hole, the vehicle body can be made unrunnable by the lock mechanism. Therefore, a double anti-theft measure can be easily implemented.

A protection member is movably provided inside the body cover that covers the periphery of the main switch. An operation lever formed separately from the protection member and having one end protruding outside the body cover is provided near the protection member. The protection member is movably provided, and the protection member is urged to the open position side by a spring, and the operation lever is engaged with the protection member so as to act only in the direction from the open position side to the protection position side of the protection member. According to another aspect of the present invention, the support portion of the protection member and the operation lever can be covered with the vehicle body cover. In addition, since the protection member cannot be turned from the protection position to the open position with the operation lever,
Even if a third party moves the operation lever while the main switch is being protected by the protection member, the key hole of the main switch cannot be opened. For this reason,
Theft can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a rear view showing a main part of a scooter equipped with a motorcycle anti-theft device according to the present invention.

FIG. 2 is a side view showing a main part of the scooter equipped with the motorcycle anti-theft device according to the present invention.

FIG. 3 is a rear view showing a state where covers are removed.

FIG. 4 is a side view showing a state where covers are removed.

FIG. 5 is a side view of the scooter equipped with the anti-theft device according to the present invention.

FIG. 6 is a rear view of a main switch portion of the scooter.

FIG. 7 is an enlarged view showing a mounting portion of the protection member.

FIG. 8 is a diagram for explaining the operation of the protection member.

FIG. 9 is a sectional view taken along line IX-IX in FIG.

FIG. 10 is a plan view of a unit swing type engine.

FIG. 11 is a side view showing a lock mechanism at the rear of the unit swing type engine.

12 is a sectional view taken along line XII-XII in FIG.

FIG. 13 is a view for explaining the operation of the lock lever of the lock mechanism.

FIG. 14 is a view showing another embodiment of the motorcycle anti-theft device according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1, 11 ... Scooter, 2 ... Steering handle, 3 ... Main switch, 3a ... Key hole, 3c, 31 ... Key, 8 ... Leg shield, 9, 12 ... Protective member, 10, 28 ... Locking device, 15 ... Rear Wheel, 23 unit case, 25 wire, 26 operating lever, 50 centrifugal clutch, 61 locking mechanism, 63 locking lever, 66 pin.

Claims (3)

[Claims] 1. A protection device which is movable between a protection position on the vehicle body frame near a main switch and a key hole of the main switch in close proximity to the key hole and an open position where a key can be inserted into the key hole. An anti-theft device for a motorcycle, comprising a locking device provided with a member and fixing the protection member at the protection position. 2. The motorcycle anti-theft device according to claim 1, wherein the operation of stopping the protection member at the protection position prevents the movable member moving for traveling from moving so that the vehicle cannot travel. A motorcycle anti-theft device comprising a mechanism. 3. The anti-theft device for a motorcycle according to claim 1, wherein a protection member is movably provided inside a vehicle body cover which covers a periphery of a main switch, and is provided separately from the protection member near the protection member. An operation lever formed on the body and one end of which protrudes outside the vehicle body cover is movably provided, and the protection member is urged to the open position side by a spring, and the operation lever is moved from the open position side of the protection member to the protection position side. An anti-theft device for a motorcycle, wherein the anti-theft device is engaged with a protection member so as to act only in the direction of the vehicle.