JPS5977901A - Wheel lock device - Google Patents

Abstract

PURPOSE:To simply and exactly lock wheels by using a system in which hooks are integrally provided to the outside of a wheel nut, latch claws to be coupled and detached with the hooks are provided in a nut cover, and the latch claws are opened or closed through a cam by a rotary key. CONSTITUTION:In a wheel lock device in assembled state, magnet pins 40-1- 40-5 fitted into the lock pin grooves 36-1, 36-3, and 36-5 of a rotary key are pressed by a spring 41 and fitted into the stopper groovs 31-1-31-5 of the annular dike portion 30 of the nut cover 7, whereby preventing the rotation of the rotary key 18. The back of a latch claw 10 is restricted by the catch claw 23a of the cam 20, thus keeping locked state. Under the condition, when the magnet key 29 is inserted into the key hole 26 of the rotary key 18, the magnet pin 40 is repelled by a permanent magnet 27, moved outwards, and removed out of the stopper grooves 31-1-31-5. The restriction of the rotary key 18 and the cam 20 is released and locking is released. Therefore, locking of wheels can be attained simply and exactly.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wheel lock device 1lIvc, in particular,
Attach and detach from the hook provided on the side of the wheel nut.

The present invention relates to a wheel lock device in which a latch pawl that can be locked is provided in a nut cover, and the latch pawl can be opened and closed by the action of a cam rotated by a rotating key member.

In general, automobile wheels are tightened to the brake drum using several wheel nuts. Since this wheel nut can be easily removed by loosening it from the outside using a wrench, it is well known that high-turn types and wheels often have a 1sVc error. Therefore, in order to prevent the wheel nuts from being easily removed by others, it is possible to cover one of the wheel nuts with a cylindrical nut cover in advance and lock the space between the wheel nut and the nut clip using a special method. It was being tried. However, conventional wheel lock devices have complicated structures and have problems with locking reliability.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a wheel locking device that can be attached to a wheel nut in one operation when locking, and that can be reliably locked.

Therefore, in order to achieve the above object, the wheel lock device according to the present invention includes an annular hook integrally formed on the outside of the wheel nut, and a cylindrical hook that covers the wheel nut and has a disc base on the inside. A plurality of latch claws are pivotally supported on the inside (8) of the disc base so as to be able to swing back and forth, and have rl jaws that can engage with the hooks, and A cam is fixed to the shaft end of the center shaft in the mounting hole and controls the swinging of the latch pawl.

An embodiment of the wheel lock according to the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 indicates a wheel nut, and this wheel nut 1 has a tapered portion 34 at one end of the hexagonal portion 2.
On the other hand, a hook 4 is integrally formed at the other end of the hexagonal part 2. This hook 4 has an annular 7-shaped groove, and a hook groove 5 is provided between this flange and the hexagonal part 2.
is completely formed.

In each wheel, a wheel lock 6 is attached to at least one of the tightened wheel nuts 1 as shown by the imaginary line.

As shown in FIG. 2, this wheel lock 6 has a cylindrical NAND cover 7, and a disk base 8 is provided at a position near the outer end of the inner cylindrical portion of this NAND cover 7. This disk base 8 is a perforated disk-shaped body formed integrally with the nut force 7.

As shown in FIG. 3, on the inner surface (left side in FIG. 2) of the disk base 8, there are three latch claws 1 (+, 1).
Pivot seats 11, 11, 11 for swingably supporting the 0, 1.0 (see Fig. 2) are spaced at equal angular intervals in the circumferential direction. It is located at Each pivot seat L] is configured as a T-groove formed by combining a holding groove 12 and a guide groove 13 in a T-shape, for example, and a pair of support pillows 14 are protruded from both sides of the guide groove 13. There is.

On the other hand, as shown in FIG. 4, the latch pawl 10 is composed of a CT-shaped leg part]Oa that can be fitted into the T-slot, a head part 10b, and a back part 10c connecting these parts. . The front of the head 10h (() is formed with a jaw portion 1 (ld), and the lower part of the jaw portion lOd is a hook groove 15. together, moving back and forth around the leg 10a, that is, applying nut force and force.
Vcrl is installed to allow pivot movement in the radial direction of -7. In addition, when the latch pawl 10 falls backward, the inner circumferential surface of the nut cover 7 that comes into contact with the protrusion 10e (see FIG. 4) formed on the outer periphery of the head 10b is as shown in the third inside. , is locally cut out and serves as an escape groove 16,
The number of escape grooves 16 is equal to the number of latch claws JO.

A mounting hole 17 is formed in the L/· section of the base 8 of the disk (Fig. 3), and the center @19 of the rotary key member 18 can be fully inserted into this mounting hole 17 (Fig. 3). Figure 2)
A cam force is fixedly fixed to the shaft end of the center shaft 19.

As shown in FIG. 5, this cam has a nose 2], and lock bands are attached to the outer ends of the arms ρ, ρ, ρ, which have the same number of latch claws and extend radially from the periphery of the hub 2j. 23 are integrally formed. This rock band Z is
It is formed as a curved band-like piece that forms part of a cylinder coaxial with the hub 21, and a part of it protrudes from the arms in the circumferential direction to become a catch part 23a, and when locked, this catch part Zla engages the latch pawl lO. outside Vc1 of the back 10c of
The latch claws 1 (3, 1 (1, 10) can be held in the locked position by retracting (see Fig. 2 and 1). The tip edge of the catch portion 23a is shown in Fig. 5. As shown, the latch claw 10 is bent diagonally when locked.
It is designed so that it can be smoothly wrapped around the back of the body.

As shown in FIG. 2, an annular ring 24 is formed on the inner peripheral surface of the nut catch 7 near the head of the latch pawl 10, and a retainer ring 25 is fitted into this ring groove arm. This causes the latch claws 10, 1 (1.

10 escapes are now blocked. The so-called C-! /y da is suitable.

On the other hand, as shown in FIGS. 2 and 6, a key hole 26 as a substantially oval-shaped recess is formed in the end surface π of the sleeve 1) 1υ of the rotary key member. The arm device in the wheel locking device according to the present invention is a so-called magnetic key/rotator that removes and locks tiles using a magnetic key, and the shape of the eye of the magnetic key is as shown in FIG. 7. In other words, the mug-mounted key extends from a key mount in which permanent stone pieces 27, 27 are embedded in selected locations, and a handle 29 that is integrally connected to the key mount. The key mount group of this magnetic key is fitted into the key hole of the rotary key member 18, and when the magnetic bin rotor is released C, the cam is rotated.

Next, the structure of the magnetic bottle lock will be explained.

As shown in FIG. 8, the opening fit/n of the outer fi 111 of the mounting hole 17 of the disk base 8 of the nut cover 7 is integrally formed with an annular embankment, and this annular embankment has, for example, five struts 131. -1, 31-2,...
, 31-5 are formed in the radial direction. Also, upper A
A spring lock pin 3 is placed on the outer annular bottom surface 32 of the ring embankment.
3 is installed protrudingly.

On the other hand, as shown in FIG. 9, an annular g34 is formed at the base of the center shaft 19 of the first white rolling member 18, and the annular embankment part 30 is formed within this Yobo groove. (See Figure 2). Housing, rotating key member 18
There are five lock pin grooves 1, 36 on the inner side (center shaft 191111) corresponding to the above-mentioned straight groove 31.
-2,..., 36-5 are formed, and these lock pin grooves can be aligned with the stopper groove 31Vc.
It's C. Furthermore, the lock pin grooves 36-1 and 3
<] In the area between -5, sector fermentation 37 along the circumferential direction
A stopper bin 33 (FIG. 8) is inserted into one end of the sector groove 37, and a compression coil spring 38 is elastically inserted between the stopper bin and the other end of the sector 37. (See Figure 2). The elasticity of the compression coil spring t'1. cam Z] is biased toward the lock position shown in FIGS. 2 and 10.

However, a plurality of lock pin grooves selected from among the lock pin grooves 36-1 to 36-5 (in the embodiment shown in the ninth figure! 36-1, 36-3o, and 36-5) K is fitted with a magnet pin 40-1, 40-3 and 40-5, respectively, and the outer end of each magnetic bottle 40 is pressed inward by the elasticity of a bottle spring 410.

Therefore, in the assembled state, the three magnet bins 40-1, 40-3 and 40-5 are arranged in the outer peripheral direction of the front 1iI2 imaginary levee section 30 (FIG. 8), that is, beyond the shear line, in the ring levee section relation. are held in the stopper grooves 31-1, 31-3, and 31-5. This state is a locked state, and the rotation of the rotary key member 18 is restrained, so that the camming state is maintained. By the way, in this locked position, the catch part Z3a of the cam is
As shown in FIG. 10, it wraps around the outside of the back 10c of the latch pawl 10 and restrains the swinging of the latch pawl 10. The nut cover 7 fits into the hook 5 next to the one shown in the figure).
This prevents it from coming out. In this case, even if the nut cover 7 is turned, it will not spin freely, and even if the nut cover 7 is held with strong force by the VC and turned, the wheel nut cannot be loosened.

In order to release the wheel lock device, as shown in FIG. The permanent magnet piece 27 moves the magnetic bottle 40 outwardly over the shear line against the elasticity of the bottle spring 41. For example, in the magnetic bin lock shown in Figure 2, the N magnetic direction VC overflowing axis of the magnet bin is orthogonal to that of the permanent stone piece υ, and the synergistic effect of the repulsive action of the same magnetic pole and the attractive action of the different i pole is achieved. The magnetic pin is shaped so that it moves.

According to the correct magnetic key, all magnetic bins 40
-1, 4 (1-3 and 40-5 move outward VC beyond the shear line, so if the magnetic key is rotated in a predetermined direction, the rotary key member 18 will also cam and Kffi
The fixed angle yoke can be rotated until the cam-attached catch portion 23a is removed from the outside of the back portion H1c of the latch pawl 10 (see Figure 1j).Then, the latch pawl 1 (1
, 10, 1, (l is the pivot seat L) can be tilted outward, so it is possible to disengage the hook 4 of the wheel nut 1 by displacing the jaw part 10d outward, and lock it. Can be canceled.

After doing so, the NAND cover 7 can be removed from the wheel nut 1, and then the wheel nut can be loosened using a snow slide.

FIG. 12 shows another embodiment of the invention, which includes:
As in the previous embodiment, the latch claw 10 is pivoted 1l.
Rather than supporting the latch pawl 10 by holding it between the retainer ring and the retainer ring, the leg portion of the latch pawl 10 is attached to a clog-shaped support block 42 by a pivot pin 43 in the direction of arrow a VC.
The support block 42 is fixed to the disk base 8 by screws, for example. In this way, the retainer ring part for preventing the latch pawl 10 from slipping out can be omitted.

As is clear from the above description, according to the present invention, the latch pawl can be moved back by placing the cam in the unlock position, so it can be installed with one touch by using a wheel nand.
Further, since the lock can be unlocked by rotating the cam by a predetermined angle, locking and unlocking operations are extremely easy.

In addition, the wheel nand's hook can be locked at any angular position, providing excellent convenience.

Yet another nut cover! (b) It spins idly against the force, and the force of the nut and the force of trying to pull out the ζ- is carried by the sturdy latch pawl, so you can expect a reliable lock with increased strength. In addition to being reliable, it is reliable enough to withstand long-term use.

In the illustrated embodiment, the rotation of the rotary key member relative to the nut cover is locked with a magnetic pin lock.
However, this is limited to other locking means such as a bottle cylinder lock, as long as the rotation of the rotary key member can be locked and unlocked. Of course, it is possible to use .

[Brief explanation of the drawing]

Fig. 1 is a side view of the wheel nut, Fig. 2 is a longitudinal sectional view of a wheel lock according to an embodiment of the present invention, Fig. 3 is a plan view of the nut cover taken from the wheel nut, and Fig. 4 is a latch pawl. 5 is a plan view of the cam, FIG. 6 is an outer end view of the wheel lock, FIG. 7 is a perspective view of the magnetic key, FIG. 8 is a plan view of the nut cover, and FIG. 9 is a plan view of the rotary key. 10 and 11, which are plan views of the magnetic bottle part of one part, show the locking and unlocking positions of the cam, respectively. 12 is a perspective view showing another embodiment of the present invention. Nut...Wheel;≠≠, 4...Hook, 5...Hook groove, 6...Wheel lock, 7...Nut cover, 8...De space, 10...Latch claw, 1
DESCRIPTION OF SYMBOLS 1... Pivot seat, 14... Support pillow, 16... Relief groove, 17... Recess hole, 18... Rotating key member, 1
9... Center shaft, 20... Cam, Hall... Lock knob, ZIa... Catch part, so-called... Ring ring,
Part... Retainer ring, 42... Support block, 4
3... Piston bottle. Applicant: Nippon Denshi Lock Co., Ltd.

Claims (1)

[Claims] 1. An annular hook integrally formed on the outside of the wheel nut, a cylindrical nut cover that covers the wheel nut and has a disc space on the inside, and a blood stopper on the inside of the disc space. a plurality of latch pawls that are pivoted so as to be able to swing back and forth, and that have jaws that can engage with the hooks; and a rotary key member that has a center shaft fitted into the mounting hole in the center of the disc space. and a cam fixed to the shaft end of the center shaft to control the swinging of the latch pawl. 2. The leg portion of the latch claw is configured in a T-shape, and the leg portion is adapted to swing in engagement with a T-groove recessed in the hemostasis of the disk space. i￥F The wheel lock device according to claim 1 VC. 3. The wheel lock device according to claim 2, wherein a pair of support pillows are curved at both sides of the vertical groove forming the T#. 4. The cam is provided with the same number of arms as the latch claws radially from the circumference of the hub, and a catch member is provided along the circumferential direction at the tip of the arm. The wheel lock device according to item 1.