JPH0740701A - Antitheft device for wheel - Google Patents

Abstract

PURPOSE:To attempt sureness of a lock having its structure simplified by fitting a cap to a neck part on the tip of a bolt replacing member implanted into one of connecting bolts of a disc where of a wheel, so as to easily release it by means of a key. CONSTITUTION:A neck part 5 and a head part 6 are provided on the tip of a main part 4 of a bolt replacing member 2 replaced by at least one of bolts of a disc wheel. Moreover, a cap 3 is formed by a lid part 7 on which a hooking member 8 supported by springs 9, and formed into a U shape in section is arranged on the inner surface. When a key 15 is inserted into a keyhole 16 of a rotational member 12 and moved, the rotational member 12 is extended against the springs 9. Thereby, engagement of the hooking member 8 with the neck part 5 is released, thereby the cap 3 can be removed from the bolt replacing member 2. Accordingly, lock and release of the wheel can be easily performed by a simple mechanism and the simple operation, so burglary of the wheel can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle antitheft device,
Particularly, the present invention relates to a wheel antitheft device for a vehicle having double tires such as a trailer and a truck.

[0002]

2. Description of the Related Art The mounting of a vehicle wheel is usually carried out by using an inner wheel 2 as shown in the double tire example of FIG.
0 is attached to the drum 19 connected to the axle 24, the hub 21 protruding from the end of the drum 19 is inserted with the disc wheel 17 having the tire 18 inserted, and the bolt 22 and the nut 2 are attached.
Although the nut 23 can be easily removed with a spanner, a wrench, etc., the wheels are often stolen during parking.

Therefore, various anti-theft devices for vehicle wheels have been developed in the past. For example, some wheels in which a magnet-actuated electronic lock is incorporated into a tubular case that covers at least one of the fastening nuts of a wheel so that the tubular case cannot be removed from the nut unless the electronic lock is unlocked. A locking device has been developed (Japanese Patent Laid-Open No. 61-1).
(No. 05201, etc.) After fastening the nut of the wheel, attach a fastening tool formed so that it will not engage with a general spanner or wrench at the tip of the protruding bolt, and tighten it using a special auxiliary tool. There has also been proposed a wheel theft prevention metal fitting in which a garment is removed and wheels are attached and detached (Japanese Patent Laid-Open No. 50-158038).

[0004]

SUMMARY OF THE INVENTION The present invention has a structure different from that of the conventional wheel antitheft device, and the mechanism is not complicated as in a wheel lock device incorporating an electronic lock, and the wheel lock device can be reliably locked. Another object of the present invention is to provide an antitheft device for an automobile wheel that can be unlocked easily with a key.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, a wheel antitheft device of the present invention has a cylindrical main body instead of at least one of the bolts for coupling the disc wheel of the wheel. A bolt substitute member having a neck portion and a head portion enlarged from the neck portion is planted at the tip of the bolt portion, and a hook member supported at the tip portion of the bolt substitute member by a spring so as to be expandable and contractible inside. The cap provided with the cap is elastically fitted, and the hook member of the cap is locked to the neck portion of the bolt substitute member so that the cap does not separate from the bolt substitute member, and the hook member of the cap is also provided. The cap is detached from the bolt substitute member by expanding against the spring and releasing the engagement between the hook member and the neck portion of the bolt substitute member.

In the antitheft device for a wheel according to the present invention, at least one of the bolts 22 for connecting the disc wheel 18 of the wheel shown in FIG. 8 is replaced with a bolt substitute member having a specific shape, and the tip of the bolt substitute member is replaced. The wheel is attached and detached by fitting a cap on the part and removing the cap with a key.
It is preferably used for the prevention of theft of wheels in vehicles equipped with double tires such as trucks.

As shown in FIG. 1, a bolt substitute member 2 of the present invention is formed by forming a neck portion 5 and a head portion 6 that is larger than the neck portion 5 at the tip of a cylindrical main portion 4. The substitute member 2 is planted in place of the bolt 22, the disc wheel 17 is inserted through the hub 21, the bolt 22 and the bolt substitute member 2, and the nut 23 is fastened to the bolt 22. The cap 3 having the key hole 16 as shown in 1 is fitted. As shown in FIGS. 2 and 7, on the inner side of the cap 3, the hooking members 8 which are supported by the action of the spring 9 so as to be expandable and contractible are circumferentially provided at appropriate intervals. The bolt substitute member 2 is elastically fitted into the bolt substitute member 2, and the hook member 8 is locked to the neck portion 5 beyond the enlarged head 6 of the bolt substitute member 2 as shown in FIG. The member 2 is prevented from coming off and the wheel is prevented from being removed.

When replacing the wheel, the key 1 is pushed through the key hole 16
5 is inserted and, as shown in FIG. 6, the hook member 8 of the bolt substitute member 2 is expanded toward the inner peripheral surface of the cap 3 against the action of the spring 9, so that the hook member 8 of the cap 3 and After disengaging the bolt substitute member 2 from the neck portion 5 and removing the cap 3 from the bolt substitute member 2, the other nuts 24 may be removed.

[0009]

According to the structure of the present invention, at least one of the bolts for connecting the disc wheel of the wheel is replaced with a bolt substitute member having a specific shape, and the bolt substitute member is planted. By fitting the cap with a key, the hook member arranged on the inner surface of the cap is locked to the neck portion of the bolt substitute member, the cap does not come off from the bolt substitute member, and wheel removal is prevented. The wheel can be removed by releasing the engagement between the hook member of the cap and the neck portion of the bolt substitute member. The lock mechanism is simple and the operation is easy, and the lock can be performed reliably.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. Embodiments FIGS. 1 to 7 show a structure, an operating mechanism, and parts of a wheel antitheft device 1 of the present invention used for a trailer and a truck having a double tire as shown in FIG. A feature of the present invention is to replace at least one of the bolts for coupling the disc wheel with a bolt substitute member and to fit a cap with a key to the bolt substitute member. The bolt substitute member 2 includes a cylindrical neck portion 5 at the tip of a cylindrical main portion 4 and a quadrangular head portion 6 enlarged from the neck portion.

A cap 3 into which the bolt substitute member 2 is fitted.
As shown in FIG. 2, an outer surface is formed of a lid portion 7 having a cylindrical shape, on the inner surface portion of which a hooking member 8 supported by a spring 9 is arranged. As shown in FIG. 7, the hook member 8 has a U-shaped cross section including an upper side portion 10 and a lower side portion 11, and is provided around the inner peripheral portion of the lid portion 7 of the cap 3 at an appropriate interval. In FIG. 2, reference numeral 12 is a hook member 8 using a key.
Is a rotating member for spreading the spring toward the inner peripheral surface of the lid portion 7 against the spring 9. Reference numeral 16 is a key hole for inserting the key 15.

When the cap 3 is fitted on the bolt substitute member 2, the hook member 8 is moved to the bolt substitute member 2 as shown in FIG.
The elastic member 9 is elastically fitted by the action of the spring 9 so that the lower side portion 11 of the hook member 8 is locked to the neck portion 5 beyond the enlarged head portion 6. In this case, the rotating member 12 disposed inside the hook member 8 is located above the enlarged head portion 6 and has a size such that it can freely rotate between the upper surface of the head portion 6 and the hook member 8. Is formed in. The rotating member 12 is composed of an upper rotating member 13 having a substantially rhombic cross section as shown in FIG. 3 and an annular lower rotating member 14 as shown in FIG.

When removing the cap 3 from the state where the cap 3 is fitted to the bolt substitute member 2, as shown in FIG. 2, the key 15 is inserted into the key hole 16 formed in the rotating member 12, and the key 15 is inserted. When rotating in the X direction as shown in FIG. 2, the upper rotating member 13 of the rotating member 12 rotates in the Y direction as shown in FIG. 3 and the upper side portion 10 of the hooking member 8 resists the action of the spring 9. Then, the lid portion 7 is expanded toward the inner peripheral surface and brought to the position shown in FIG. As a result, as shown in FIG.
The lower side 11 of the hooking member 8 is disengaged from the neck portion 5 of the bolt alternative member 2 by expanding in the direction, and the cap 3 can be removed from the bolt alternative member 2.

[0014]

As described above, according to the present invention, there is provided a wheel antitheft device capable of reliably locking and unlocking a wheel with a simple mechanism and a simple operation.

[Brief description of drawings]

FIG. 1 is a partial perspective view of a bolt substitute member and a cap of the present invention.

FIG. 2 is a cross-sectional view showing a state in which a cap is fitted in the bolt substitute member of the present invention.

3 is a sectional view taken along the line AA of FIG.

4 is a cross-sectional view taken along the line BB of FIG.

5 is a cross-sectional view showing a state in which the rotating member is rotated to the unlocked position in FIG.

FIG. 6 is a cross-sectional view showing the relationship between the bolt substitute member and the cap in the unlocked position.

FIG. 7 is a perspective view of a hook member.

FIG. 8 is a partial cross-sectional perspective view showing a mounted state of wheels in a vehicle having a double tire.

[Explanation of symbols]

 1 Anti-theft device 2 Bolt substitute member 3 Cap 4 Cylindrical main part 5 Neck part 6 Enlarged head 7 Lid part 8 Hooking member 9 Spring 10 Upper side part 11 Lower side part 12 Rotating member 13 Upper turning member 14 Lower turning member 15 keys 16 keyholes 17 disc wheels 18 tires 19 drums 20 wheels 21 hubs 22 bolts 23 nuts 24 axles

Claims (1)

[Claims] 1. A bolt substitute member in which a neck portion and a head portion enlarged from the neck portion are formed at a tip portion of a cylindrical main portion in place of at least one bolt for connecting a disc wheel of a wheel. A cap provided with a hooking member that is supported by a spring so as to be expandable and contractible on the inner side thereof is elastically fitted to the tip of the bolt replacing member, and the hooking member of the cap replaces the bolt. The cap is prevented from separating from the bolt substitute member by being locked to the neck portion of the member, and the hook member of the cap is expanded against the spring to release the engagement between the hook member and the neck portion of the bolt substitute member. A wheel antitheft device characterized in that the cap is detached from the bolt substitute member by doing so.