JP2732266B2 - Anti-theft device for motorcycle and its holder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a device for preventing a theft by tying a bicycle or a motorcycle to a structure such as a telephone pole or stopping a wheel from rotating, and a device for preventing theft. The present invention relates to a holder for holding a vehicle body.

[Prior Art] Conventionally, as this kind of anti-theft device, for example, Japanese Unexamined Patent Application Publication
62-59783 publication '', by connecting a plurality of metal rods rotatably, it is foldable, and constitutes one elongated continuous rod body that can be deployed in a loop,
There has been known a structure in which both ends of this continuous rod are detachably connected by a lock cylinder.

[Problem to be Solved by the Invention] However, since the prior art continuous rod body is configured by connecting a large number of metal rods so as to be as compact as possible when folded, the number of metal rods is Needless to say, the number of universal joints connecting the metal rods inevitably increases. For this reason, an increase in the number of parts tends to make the entire apparatus heavier, and there is still room for improvement in this weight aspect.

Further, since this conventional anti-theft device is stored in a case or the like in a folded state and carried, in order to prevent the device from being stolen with the case, the case is locked to the body of the motorcycle. There is also a problem that a dedicated lock mechanism is required.

Therefore, the present invention can reduce the number of parts as much as possible and reduce the weight without impairing the point of compact folding. Further, the present invention utilizes a lock cylinder for locking metal rods in a loop shape. Another object of the present invention is to provide a motorcycle anti-theft device capable of securely and easily fixing a folded metal bar to a vehicle body, and a holder for the anti-theft device.

[Means for Solving the Problems] Therefore, in the anti-theft device according to claim 1, the anti-theft device is bent at a position biased toward one end in the longitudinal direction to form a substantially hook shape,
The first metal rod and the second metal rod formed in substantially the same shape are overlapped with each other in the longitudinal direction and pivotally connected to each other so as to pivotally connect the first and second metal rods. The first metal bar is provided at the other end of the first metal bar with the first metal bar and the second metal bar at the other end of the first metal bar. When the third metal rod is unfolded, a third metal rod that forms a loop over the other end of the second metal rod is piled up and pivotally supported, and the third metal rod is rotatable. The direction in which one end of the first metal rod is pivoted with respect to the second metal rod is perpendicular to the direction in which the other end of the first metal rod is pivoted with the third metal rod. And a second metal rod which is detachably locked to one of the opposite ends by a locking operation. It is characterized in that it is integrally fixed to the Kushirinda.

According to the second aspect, the three metal rods according to the first aspect are pivoted on a main body fixed to the vehicle body for the purpose of securely and easily fixing the metal rod that has been folded to the vehicle body. A locking projection which is inserted into the insertion hole of the lock cylinder when inserted and folded so as to be detachably locked by a locking operation, and the outer periphery of another metal rod excluding the metal rod having the lock cylinder. Characterized in that a holding portion for detachably holding is provided.

[Operation] In the configuration described in claim 1, the first to third
If the metal rods are rotated in the direction of approaching each other from the unfolded state of forming a loop, these metal rods will overlap each other and be folded into a smaller shape than when expanded in a loop, and the entire device will be compact. It is possible to form a shape that is well integrated. And in this case, since only three metal rods are needed to form a loop when unfolded, the number of metal rods and their connecting parts can be reduced as compared to the conventional one, without compromising compactness in a folded state, The entire device can be reduced in weight.

In addition, as described in claim 2, when the two overlapping metal rods are held by the holding portion, and the locking projection is inserted into the insertion hole of the lock cylinder and locked so as not to be able to be removed, three metal rods can be obtained. The metal bar can be locked to the vehicle body while being folded. For this reason, when the anti-theft device is not used, the anti-theft device can be fixed to the motorcycle body using the lock cylinder of the device itself, and a dedicated lock for fixing the anti-theft device to the vehicle body is not required.

Example A first example of the present invention will be described below with reference to FIGS. 1 to 13.

In the figure, reference numeral 1 denotes a loop structure that forms a loop when used, and the loop structure 1 includes first to third metal rods 2,
It is composed by joining 3,4. Metal rods 2, 3, 4 of this embodiment
Is forged from a solid round bar made of, for example, end steel for machine structures or chromium molybdenum steel, and its outer peripheral surface is carburized and quenched.

As shown in FIG. 2, the first and second metal rods 2 and 3 have a substantially hook shape bent at a right angle at a position deviated to one longitudinal end thereof, and have substantially the same shape as each other. At one end of the metal rods 2, 3, disc-shaped connecting bosses 2a, 3a are integrally forged, and these bosses 2a, 3a are rotatably connected to each other. I have. The connection structure will be described with reference to FIG. 10. The bosses 2a and 3a are coaxially overlapped with each other, and an insertion hole 6 through which the pivot shaft 5 penetrates with a gap is formed in one boss 2a. ing. A counterbore 7 is provided at the periphery of the opening of the insertion hole 6.
The seat 8 a of the head 8 of the pivot shaft 5 is in close contact with the counterbore 7. The tip of the pivot shaft 5 is screwed into the screw hole 9 of the other boss 3a. Even when the pivot shaft 5 is screwed to the maximum, a gap is formed between the bosses 2a and 3a. I have. For this reason, the first metal rod 2 and the second metal rod 3 are rotatably connected with a certain play in the axial direction and the radial direction of the pivot shaft 5, and these metal rods 2 and 3 are mutually connected. When rotated in the direction away from each other, it is deployed in a substantially U-shape, and when rotated in the opposite direction, it is folded to an overlapping position.

In addition, the head 8 of the pivot shaft 5 does not protrude from the end face of the boss portion 2a but enters the counterbore 7 and
The thickness L of the overlapping portion of 2a and 3a is kept small.

Further, the third metal rod 4 has a substantially U-shape bent so that both ends thereof are directed in the same direction, and one end of the third metal rod 4 is connected to the other end of the first metal rod 2. It is rotatably connected. That is, the other end of the first metal rod 2 and the third
Disc-shaped bosses 2b and 4a are integrally forged and formed at one end of the metal rod 4, and these bosses 2b and 4a are rotatably connected via a pivot shaft 5 in the same manner as described above. I have. In this case, the boss portion 2b, 4a is the boss 2a its axis, is provided in a state of being perpendicular to 3a, pivot axis X ₁ of the second metal rod 3 and the third metal rod 4 times shaft X ₂ are orthogonal to each other.

Therefore, when the first metal bar 2 and the second metal bar 3 are developed in a U-shape as described above,
The other end is opposed to the other end of the second metal bar 3 so as to form a substantially square loop as shown in FIG.

A lock cylinder 10 is provided at the other end of the third metal rod 4. The lock cylinder 10 is composed of an outer cylinder 11 welded to the other end of the third metal rod 4 and a locking mechanism 12 housed in the outer cylinder 11. An insertion hole 13 into which the other end of the metal bar 3 is inserted is opened. As shown in FIG. 8, the locking mechanism 12 includes a lock lever 15 which is turned by a key 14.
15 is reciprocated in the outer cylinder 11 between a locked position and a released position. A groove 16 is formed at the other end of the second metal bar 3 inserted into the insertion hole 13 for locking the lock lever 15 so as to be releasably engaged. Therefore, when the other end of the second metal rod 3 is inserted into the insertion hole 13 and the lock lever 15 is rotated to the locked position, the lock lever 15 is fitted into the groove 16 and the second metal rod 3 is inserted. The rod 3 is retained in the insertion hole 13 so as not to come off. When the third metal rod 4 is rotated toward the first and second metal rods 2 and 3 in the folded state, the lock cylinder 10 is rotated as shown in FIG.
Are arranged side by side along these two metal rods 2, 3, and the insertion holes 13
Is facing outward.

Next, a method of using such an anti-theft device will be described.

For example, as shown in FIG. 1, when anchoring to a road building 23 such as a front wheel 22 of a bicycle 21, a pole or a guardrail, etc., first, the metal rods 2, 3, 4 shown in FIGS.
Is expanded in a loop. Next, the front wheel 22 and the road-side building are passed through the space between the second metal bar 3 and the other end of the third metal bar 4.
23 is positioned inside the first to third metal rods 2,3,4, that is, inside the loop structure 1, and the loop structure 1 is straddled between the front wheel 22 and the road building 23. And the second
The other end of the metal rod 3 is inserted into the insertion hole 13 of the lock cylinder 10 and the lock lever 15 is rotated to the locked position using the key 14. The second metal rod 3 is locked so that it cannot be pulled out.

Further, this loop structure 1 not only anchors the front wheel 22 to the road building 23, but also straddles between the front wheel 22 and the front fork 24 as shown by an imaginary line in FIG. You can also eliminate the 22 detents.

By the way, the frame 25 of the bicycle 21 is provided with a holder 31 for fixing the anti-theft device to the frame 25 when the anti-theft device is not used as in running. For details of the holder 31, see FIGS.
This is shown in FIG.

That is, the holder 31 includes a main body 32 made of synthetic resin held by the seat tube 26 of the frame 25.
A through hole through which the seat tube 26 passes is formed in the main body 32.
33 and a slit 34 connected to the through hole 33 are formed. When the bolt 35 passing through the slit 34 is tightened, the diameter of the through hole 33 is reduced and the through hole 33 comes into close contact with the seat tube 26, whereby the main body 32 is fixed to the seat tube 26.

A support portion 36 that receives the outer cylinder 11 of the lock cylinder 10 protrudes from the front surface of the main body portion 32. The contact surface 36a of the support portion 36 with the outer cylinder 11 is curved in an arc shape along the peripheral surface of the outer cylinder 11, and the insertion hole 1 of the outer cylinder 11 is provided on the contact surface 36a.
A locking projection 37 inserted into 3 protrudes. Locking protrusion 3
An engagement groove 38 with which the lock lever 15 is removably engaged is formed on the peripheral surface of 7. For this reason, when the locking projection 37 is inserted into the insertion hole 13 and the lock lever 15 is rotated to the locked position, the lock lever 15 is fitted into the engagement groove 38 as shown in FIG. The locking projection 37 is retained in the insertion hole 13 so as not to come off, whereby the lock cylinder 10 is fixed to the support portion 36.

On the front surface of the main body 32, a fitting wall 39 is protruded adjacent to the side of the support portion. The fitting wall 39 is curved in an arc shape as shown in FIG. 12, and extends to the front side of the main body portion 32, and the outer peripheral surface of the second metal bar 3 is fitted between the fitting wall 39 and the front side. The groove-shaped first fitting portion 40 to be held is constituted. At the same time, a continuous portion from the front surface of the main body portion 32 to the side surface of the support portion 36 is also formed in an arc shape, and the groove-shaped second fitting portion 41 for fitting and holding the outer peripheral surface of the first metal rod 2. The first metal rod 2 and the second metal rod 3 are supported by the main body 32 in a state where they are overlapped with each other.

Therefore, with the first metal rod 2 and the second metal rod 3 fitted in the fitting grooves 40 and 41, respectively, the lock cylinder 10
If the device is pressed against the support portion 36 and locked, the whole anti-theft device is fixed to the frame 25 of the bicycle 21.

The main body 32 of the holder 31 is not limited to the one fixed to the seat tube 26 of the bicycle 21, but may be fixed to, for example, a cross tube 28 or a down tube 29 connecting the seat tube 26 and the head pipe 27. Of course.

According to the antitheft device having the above configuration, the front wheel 22 of the bicycle 21
The loop structure 1 for anchoring or stopping the vehicle to the road-side building 23 is composed of first and second hook-shaped bent members.
The metal rods 2, 3 and the U-shaped third metal rod 4 are rotatably connected. When these metal rods 2, 3, 4 are deployed, they are sufficiently continuous in a substantially square shape. A large loop can be formed, and the work of stopping and tying the front wheel 22 can be easily performed.

Further, if these three metal rods 2, 3, 4 are rotated in a direction approaching each other, the first metal rod 2 and the second metal rod 3, which have substantially the same shape, overlap and are bundled together. At the same time, since the third metal rod 4 is folded along these two metal rods 2 and 3, the size of the entire device becomes approximately half or less when the device is unfolded in a loop shape, and the entire device is easily integrated with contacts. It can be shaped.

Then, in this case, a loop construct 1 forming a loop
Is simply formed by three metal rods 2,3,4, so the number of metal rods 2,3,4
The number of pivot shafts 5 that rotatably connect 2, 3, and 4 can be reduced, and the entire apparatus can be reduced in weight without impairing the advantage of compact folding.

On the other hand, the anti-theft device in the folded state
The holding tool 31 for holding the frame 21 of the lock 21 holds the locking projection 37 inserted into the insertion hole 13 of the lock cylinder 10 and the first and second metal rods 2, 3 which are overlapped with each other. Since the first metal rod 2 and the second metal rod 2
When the metal rod 3 is held by the holding portions 40 and 41 and the locking projection 37 is inserted into the insertion hole 13 of the lock cylinder 10 and the lock cylinder 10 is locked, the folded state is maintained. The anti-theft device can be fixed to the frame 25 of the bicycle 21. For this reason, when the anti-theft device is not used as in traveling, the first metal rod 2 and the third
The lock cylinder 10 for connecting the metal rod 4 can be securely fixed to the frame 25 side, and there is an advantage that a dedicated lock is not required.

The anti-theft device according to the present invention is not limited to the first embodiment. For example, as in the second embodiment shown in FIG. 14 and FIG. A groove 16 with which the lock lever 15 of the lock cylinder 10 engages may be provided at the other end of the third metal rod 4 while being provided at the other end of the rod 3.

FIGS. 16 and 17 show a third example of the anti-theft device.
An example is shown. In the third embodiment, a third metal rod 4 is formed in a substantially rectangular shape, and three metal rods 2, 3, 4 are formed.
When the is folded, the metal rods 2, 3, and 4 are folded substantially in a bundle.

Note that the anti-theft device according to the present invention is not specified for bicycles, but can be similarly applied to a motorcycle. In the case of this motorcycle, the fixing portion of the holder is a rear half of a carrier or a seat. For example, a grip pipe for a passenger surrounding the part may be considered.

[Effects of the Invention] As described in detail above, according to the configuration of claim 1, the third aspect
When the first metal bar and the second metal bar are developed in a substantially U-shape, the other end of the metal bar opposes the other end of the second metal bar, forming a substantially square loop. Since it can be easily formed and only three metal rods are required to form a loop when unfolded, the number of metal rods and their connecting portions can be reduced as compared with the conventional case, and the entire apparatus can be reduced in weight. In addition, since a relatively large square loop is formed at the time of deployment, it is easy to insert the anti-theft device into a motorcycle. In addition, the first metal rod and the second metal having a substantially hook shape in a folded state are provided. The rods overlap each other over substantially the entire length, and the third metal rod is also folded so as to enter the inside of the substantially hook shape, so that it can be folded compactly as a whole.

According to the holding device of the present invention, when the anti-theft device is not used, the device can be easily and securely fixed in a state of being folded to the body of the motorcycle by using the lock cylinder of the device itself. There is an advantage that a dedicated lock device for fixing the anti-theft device to the vehicle body side is not required.

[Brief description of the drawings]

1 to 13 show a first embodiment of the present invention.
The figure is a side view showing the state where the anti-theft device is fixed to the bicycle and the use state of the anti-theft device, FIG. 2 is a plan view of the state where the anti-theft device is folded, and FIG. 3 is from the direction of the line III in FIG. FIG. 4 is an arrow view as viewed from the direction of the IV line in FIG. 3, FIG. 5 is a plan view of the anti-theft device in an unfolded state, and FIG. 6 is a direction of the VI line in FIG. 7, FIG. 7 is an arrow view as viewed in the direction of the line VII in FIG. 5, FIGS. 8 and 9 are cross-sectional views of the lock cylinder, and FIG. 10 is a cross-sectional view of a connecting portion of the metal rod. Fig. 11, Fig. 11 is a side view of the state in which the anti-theft device is fixed to the holder, Fig. 12 is a plan view of the holder, Fig. 13 is a front view of the holder, Figs. 14 and 15 are anti-theft devices. FIG. 14 shows a second embodiment of the device, FIG.
16 and 17 show a third embodiment of the anti-theft device, FIG. 16 is a plan view of an unfolded state, and FIG. 17 is a plan view of a folded state. is there. 2... First metal rod, 3... Second metal rod, 4.
Metal rod, 10 ... lock cylinder, 13 ... insertion hole, 25 ...
... body (frame), 32 ... body, 37 ... locking projection,
40,41… Holding part.

Claims (2)

(57) [Claims] 1. A first metal rod and a second metal rod, which are bent at a position deviated to one end in the longitudinal direction to form a substantially hook shape and have substantially the same shape, are overlapped with each other in the longitudinal direction. By pivotally connecting the two metal rods while pivotally supporting them, the first and second metal rods can be unfolded in a direction of expanding from a state where they overlap each other over substantially the entire length with one end connecting portion as a fulcrum. When the first metal bar and the second metal bar are deployed at the other end of the first metal bar, the first metal bar extends between the other end of the second metal bar. A third metal rod forming a loop is rotatably supported by being piled up and supported, and a pivot direction of one end of the first metal rod with respect to a second metal rod and the other end of the first metal rod. And the support direction of the third metal rod is orthogonal to each other, and any one of the third metal rod and the second metal rod Of the opposite end portion, the other removably lock motorcycle anti-theft device being characterized in that integrally fixed to the lock cylinder to the opposite ends locking operation. 2. When the three metal rods according to claim 1 are rotated and folded into a main body fixed to a vehicle body, the three metal rods are inserted into insertion holes of the lock cylinder and can be attached and detached by a locking operation. A locking projection which is locked to the lock rod, and a holding portion for detachably holding an outer periphery of another metal rod other than the metal rod having the lock cylinder is provided. .