JPS59190001A - Locking device for center wheel - Google Patents

Abstract

PURPOSE:To surely prevent a wheel from loosening and being stolen, by providing such an arrangement that a locking device is attached to the inner surface of the end plate of a cap nut, and there are provided an intermediate lever, a pawl piece, etc., which are engaged with and disengaged from the ratchet teeth of an internal gear ring integrally incorporated with the threaded cylinder of an axle hub. CONSTITUTION:When a key which is not shown is inserted into a lock body N and is turned by 180 deg. in its unlocking direction, an intermediate lever 37 is rotated counterclockwise by rotated cams 33, 34 through a mandrel 47 so that a pawl piece 35 is released from the ratchet teeth 18 of an internal gear ring 17, and therefore, a cap nut N becomes rotatable, thereby a wheel may be removed. When the key is turned by 180 deg. in its locking direction after the cap nut N is tightened, the small diameter section of the cam 33 faces the intermediate lever 37 so that a pressing spring 38 urges the pawl piece 35 to engage with the ratchet teeth 18, and therefore, the cap nut N is inhibited from rotating thereby the wheel is prevented from loosening. With this arrangement, the loosening of the wheel and the theft thereof may be surely prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a locking device for loosening and preventing theft provided inside a cap nut in a center wheel in which an automobile wheel is connected to an axle using only one cap nut. .

To create a center wheel, fasten a seat plate with a thick threaded tube to the hub of the axle, fit the core hole of the disc into the hollow part of the threaded tube, screw together a cap nut, and tighten the disc with the seat plate and cap nut to form the axle. join to. This center wheel uses a light disc made of aluminum, and it looks good because there is no tightening nut on the boss of the disc, but the conventional center wheel does not have a means to prevent it from loosening, so it is difficult to brake suddenly. They sometimes tend to loosen, and since there is no locking device for the cap nut, the cap nut can be easily removed, making it easy for the wheels to be stolen.

The present invention was developed in view of the drawbacks of the conventional products, and incorporates a loosening/locking device into the cap nut of the center wheel to reliably prevent the wheel from loosening and theft.

In Figs. 1 and 2, reference numeral 1 denotes an aluminum disc, a tire 3 is mounted on a rim 2 attached to the periphery of the disc, and the disc is connected to an axle 4 with only one nut (N). The axle 4 is surrounded by a cylindrical housing 5, a boss of a hub 6 is fitted into the shaft end, and the hub 6 is joined together with a bolt 7 and a key 8, and the side end of the housing 5 is inserted into a recess inside the boss. A ball bearing 9 is interposed therebetween. The hub 6 is supported on the side end of the housing 5 by this ball bearing, and four fastening bolts 10 welded to the inner surface of the hub protrude from the outer surface. Reference numeral 12 designates an annular seat plate integrally having a threaded cylinder 13, which is attached to the outer surface of the hub 6 and fastened through its through hole. A left-handed thread is cut on the outer circumferential surface of the threaded cylinder, and a hollow part 14 that is slightly thicker than the threaded surface is provided at the root thereof. Since the disk 1 is made of aluminum, the boss is made thick to provide strength, and the inner surface of this boss is
The recesses 15 are made at equal angles.

For the center wheel, fit the core hole 16 of the disc into the hollow part 14 of the threaded cylinder, and bring the inner surface of the boss into close contact with the seat plate 12. To tighten the seat plate, insert the nut 11 into the recess 15 and tighten the disc 1 to prevent rotation. Screw N counterclockwise into the threaded tube 13, press the tapered surface of the inner end against the tapered surface of the core hole 16 of the disc, and tighten it to the hub 6 of the axle. Since it is threaded and the cap nut N is screwed in counterclockwise, the cap nut can be tightened in the direction of rotation of the wheel. A center wheel is also used which cuts a right-handed thread in the threaded cylinder 13 and screws the cap nut clockwise.

The present invention incorporates a loosening/locking device into the cap nut of the center wheel.

In the embodiment shown in FIGS. 2 to 5, reference numeral 17 denotes an internal toothed ring having serrated claw teeth 18 cut on the entire circumference of the inner surface, which is firmly fitted into the end of the threaded cylinder 13 and extends through the three protrusions 19 on the outer edge. The inner ring 17 is inserted into the notch of the threaded barrel and the notch is caulked to integrally connect the internal ring 17 to the mouth end of the threaded barrel 13. Note that the internal ring 17 may be formed by protruding an annular thick part on the inner circumferential surface of the mouth end of the threaded cylinder 13 and processing this thick part with a broaching machine.

N is made into a hexagonal shape and has an annular edge 2 on the periphery of the end plate 20.
1 is raised, a thick through hole 22 is pulled out in the center of the end plate, and four countersink holes are made around it.

24 is the main body of the locking device to be incorporated into Fukuronatsu) N. It is made in the shape of a thick disk, with a core hole 25 in the center, and both edges are cut off, and a circular ring is attached to the center of the front along the edge plate addition. A guide is provided protrudingly and fitted into the through hole 22 from the inside of the end plate. The lock body U is fixed to the inner surface of the end plate 20 of the cap nut by inserting the four short protrusions provided on the front into the countersink holes of the end plate 20 and caulking the tips of the protrusions, so that the upper and lower arcuate surfaces are inside. tooth ring 17
Let's face it. Reference numeral 27 denotes a seal plate attached to the end plate 20 of the cap nut.Drill a round hole in the center to receive the annular ring of the lock body, fit it completely inside the annular edge 21 of the end plate, and attach it with adhesive to the front side of the end plate. Fix it to make the appearance of N (Fukuronatsu) N better. Note that the lock body 24 may be fixed to the end plate of the cap nut using a countersunk screw, but there is a risk that the seal plate 27 may be peeled off illegally and the lock body may be removed. It is better to swage the protrusions rather than countersunk screws as a preventative measure against unauthorized use.

The back side of the lock body U is lined up to its fullest extent, with a groove large enough to leave narrow sides m 31 and 32 on the left and right sides, and both sides of the upper and lower sides of this groove are attached to the internal tooth ring 17. Open it facing the camera, cover the entire back cover with the back cover 28, and remove the four screws 2.
9 =:・1 fixes to the back of the side wall. E. 33 is two eccentric cams housed in the center of the split groove, stacked front and back with the small diameter parts facing the left and right side walls 31 and 32, and a lock plate (described later) is inserted into the rectangular core hole. The cut end of the core rod 47 protruding from the back is attached, and the rotation angle is restricted to 180 degrees by the protrusion and the fan-shaped groove (both not shown) on the bottom of the groove into which the protrusion is fitted. M, 3
Reference numeral 4 designates two intermediary levers, which have claw pieces 35 diagonally protruding from their outer ends to form a U-shape as a whole. The outer end is pivotally attached to the side corner of the dividing groove by means of a pin, and the round protrusion 37 provided at the inner end is brought into contact with the cam 33. Claw piece 35, 3
5 extends in the direction along the periphery of the lock body U, the tip is shaped to engage with the claw teeth 18 of the internal tooth ring, and the push spring 38 is inserted into the cylindrical metal (, 39) attached to the bottom of the split groove. This pressing spring pushes the pawls 35, 35 so that they protrude from the lock body U, which is like a toe, and engages with the pawl teeth 18 of the internal tooth ring to prevent the bag nut (H) from rotating in the right direction. At this time 2
The intermediate levers 34, 34 connect the protrusion 37 to the cam 33,
33, and when the cam rotates 1800 times and pushes the protrusion 37 of the mediating lever with its large diameter, the mediating lever 34.34 rotates counterclockwise and the claws 35, 35
is moved backward, and the toe is removed from the internal tooth ring 18 and inserted into the lock body. In addition, when screwing N in the counterclockwise direction, the pawl piece 35 of the intermediary lever will engage the pawl tooth 18 of the internal tooth ring.
The directions of the claw teeth 18 and the claw pieces 35 are determined so that the claw teeth 18 and the claw pieces 35 slide away, and the mediating levers 34 and 34 are kept from hitting the side walls 31 and 32 when the claw pieces 35 escape.

Next, an embodiment of the electronic lock L used in the device of the present invention will be described.

In this embodiment, as shown in Fig. 3.4.6, half of the ring band 26 of the lock body has a protrusion 40 at a certain height along the inner circumferential surface.
Raise it and divide this ridge into 6 parts to make 6 recesses 41...
are set at equal angles. 42 is a circular lock plate housed in the ring 26, with a shallow recess 48 on the front surface; Six triangular protrusions 45 curved into the ring are protruded at equal angles, and these protrusions are fitted into the inside of the flange of the ring so as to rotate freely, so that the front surface of the lock plate 42 is attached to the ring. Align it to 26. The lock plate 42 is 6
Six radial grooves 46 are formed between the two protrusions 45, and the radial grooves 46 extend in the radial direction and are arranged at equal angles of 60°, and the groove width is equal to the recess 41 on the edge of the ring. The width is ``match.''

The lock plate 42 is constructed by inserting a core rod 47 protruding from the back side into the core hole 25 of the lock body and attaching a cam fixed to the cut end of the lock plate 42.
2 is stopped from being pulled out, and the lock plate 42 is inserted against the end plate of the cap nut.
is held rotatably. 48... are short and small round rod-shaped magnets, which are inserted into the six radial grooves of the lock plate along with the springs 49... and arranged at equal angles of 600.
8, a spring 49, and a lock plate 42, an electronic lock L is assembled separately into the lock body, and this is attached to the inner surface of the end plate 20 of the bag inside (N). The magnets are always pushed by the springs 49 to push their outer ends into the recesses 41 in the flange of the ring band 26, and these magnets connect the lock plate 42 to the lock body 24. This prevents the lock plate 42 from rotating, resulting in a locked state, and different keys are created by changing the number of magnets and the directions of the north and south poles.

As shown in FIG. 7, the key is integrally connected with a grip 51 that becomes gradually flat on the back side of the main piece 50, and this main piece is attached to the + of the lock plate.
41I4? @Made in a shape that fits into the recess 43, a row of vertical grooves 52 that match the protrusions 44 of the recess is arranged on the front surface of the main piece, and the use position of the key is determined by the direction of curvature of the protrusions and grooves. regulate. The key has 6 small round bar magnets on the main piece.
3... is embedded in the radial direction, and this magnet is arranged so that the magnetic pole of the opposite sex is opposite to the magnet 48... in the lock plate, and the rim of the case is located closer to the magnetic pole than the magnet 48 in the lock plate. 41 toward the center.

For electronic locks, when the main piece 50 of the key is fitted into the recess 43 of the lock plate, the groove 52 is engaged with the protrusion, and the main pieces are stacked on the lock plate 42, the magnet 48 in the lock plate...・is the key magnet 53...
The lock plate 42 becomes rotatable because it gathers in the center of the lock plate against the spring 49 and comes out of the recess 41 on the edge of the ring band 26. Since the lock plate 42 rotates together with the magnets 48, there is no need to keep the rotation angle of the lock plate below the spacing between the magnets as in conventional electronic locks. In addition, there are six indentations 41...6 on the edge of the ring.
Since the holes are drilled at equal angles of 0°, the lock plate 42 is 180°.
When the key K is removed by turning it 0 times, the magnets 48 enter into the recess 41 of the ridge, stopping the movement of the lock plate and holding the electronic lock L in the unlocked state.

One embodiment of the present invention has the above-described configuration, in which an annular seat plate 12 having a threaded cylinder 13 is integrally fastened to the hub 6 of the axle, and the core hole 16 of the disk is fitted into the hollow part 14 of the threaded cylinder. To tighten the inner surface of the boss, put the inner surface of the boss in close contact with the seat plate 12, put the nut 11 into the recess 15 of the boss, make sure the disc is aligned, and screw the cap nut N into the threaded cylinder 13 so that the tapered surface of the inner end touches the disc. The core hole 16 is joined.

Normally, the small diameter part of the camshaft (33) inside the lock body is in contact with the protrusions 37, 37 of the intermediate lever, and the claw pieces 35, 35 are pushed by the push springs 38, 38 to lock the toes. Although it protrudes from the main body 24, when the cap nut is screwed in counterclockwise, the claw piece 35 slides over the claw teeth 18 of the internal tooth ring, so the cap nut (N) can be turned freely. However, the clockwise rotation of the bag nut is the claw piece 3.
5 and the claw teeth 18 of the inner tooth ring, the bag nut (N) which once screwed into the threaded cylinder 13 and biased the disc L will not loosen while driving the car. There is no possibility that the nut will be removed illegally and the wheel stolen. In addition, in the electronic lock built into the lock body, the magnet 58 in the lock plate enters the recess 41 in the rim of the ring, thereby preventing the lock plate 42 from rotating. The electronic lock L is kept locked.

When replacing the wheel, fit the main piece of the key into the recess 43, stack it on the lock plate 42, attract the key with the magnet 53 in the lock plate, and then attach it to the ring. Recess on edge of belt 41・
... to make the lock plate 42 rotatable. Then, when the key K is turned 180 degrees, the lock plate and its core rod 47 are also rotated 180 degrees, and the core rod turns the cams 33, 33 180 degrees and pushes the protrusions 37, 37 of the intermediary lever with its large diameter part. , the intermediary levers 34, 34 are rotated counterclockwise and the claw pieces 35, 3
Move 5 back. As a result, the toe disengages from the internal toothed ring 18 and sinks into the lock body, so that the bag nut N can be rotated. When the key K is removed in this state, the magnets 48 in the lock plate enter the recesses 41 in the flange of the ring band 26, stopping the movement of the lock plate 42 and turning the electronic lock L into an unlocked state. Since the cam 33 holds the claw pieces 35, the claw pieces 35 remain in a retracted state, and even if the key K is removed, the claw tips remain separated from the internal tooth ring 17.

Then, use a wrench to remove the cap nut (N) from the screw tube 13, remove the disc from the hollow part 14 of the screw tube, and replace the wheel. When screwing in the cap nut N after replacing the wheel, leave the electronic lock L unlocked, turn the cap nut, screw it all the way in by hand, tighten it with a spanner, and then insert the key K into the lock plate. 42 and turn it back 180 degrees. As a result, the electronic lock is locked, and the small diameter parts of the cams 33, 33 face the protrusions 37, 37 of the intermediate lever, so that the push spring 3
8 and 38 push the claw pieces 35° and 35, causing the tips to protrude from the lock body U and mesh with the claw teeth 18 of the internal tooth ring, preventing the rotation of the bag nut (N) and preventing the wheel from loosening and theft. do.

The above describes one embodiment of the present invention, but the present invention is not limited to this embodiment, and the design can be changed within the gist of the invention. For example, the present invention can be used for an ordinary steel disk. , remove the intermediary lever and the claw piece 35 to 1
It may be one book or three or more. Further, in the present invention, a cylinder lock may be used instead of the electronic lock, the number of magnets in the electronic lock may be increased or decreased, or rectangular parallelepiped magnets with rounded corners may be used.

According to the present invention, in a center wheel in which an automobile wheel is connected to an axle with only one cap nut, an internal tooth ring is integrally provided at the mouth end of a threaded tube into which the cap nut is screwed, and an electronic lock or cylinder lock is incorporated. The lock body is attached to the inner surface of the end plate of the cap nut, and an intermediate lever having a pawl piece that engages with the pawl teeth of the internal tooth ring and a push spring for the pawl piece are provided in the split groove on the back side of the lock body, and the push spring for the pawl piece is provided. The cam of the electronic lock or cylinder lock is housed in the center and is brought into contact with the intermediary lever, and the cam is set to advance and retreat the claw piece to engage or disengage the claw tip with the internal tooth ring, and these configurations This prevents the cap nut from returning and secures the tightening of the disc, and when the electronic lock or cylinder lock is unlocked, the toe and internal tooth ring disengage, which reliably prevents the center wheel type wheel from loosening and theft. It has a soothing effect.

[Brief explanation of the drawing]

The drawings show one embodiment of the locking device according to the present invention, in which Fig. 1 is a front view of the center wheel, Fig. 2 is an enlarged sectional view of the boss, Fig. 3 is a perspective view of parts, and Fig. 4 5 is an enlarged sectional view of the cap nut, FIG. 5 is a sectional view taken along line AA in FIG. 4, FIG. 6 is a sectional view taken along line BB in FIG. 4, and FIG. 7 is a perspective view of the key. In addition, 1 is a disk, 4 is an axle, 12 is a seat plate, 13 is a threaded cylinder, 14 is its hollow part, 16 is a core hole of the disk, 17
18 is the internal tooth ring, 18 is the claw tooth, N is the cap nut, 22 is the through hole, U is the lock body, ``(material)'' is the dividing groove, ``o'' is the cam, ``A'' is the mediating bar, 35 is a claw piece, the wing is a push spring, and L is an electronic hook. Figure 4 LA Figure 6 Figure 5 Figure 7

Claims (1)

[Claims] A center where a seat plate with a thick threaded tube is fastened to the hub of the axle, the core hole of the disk is fitted into the hollow part of the threaded tube, a cap nut is screwed together, and the disk is connected to the axle with the seat plate and the cap nut F. In wheels, an internal ring with pawl teeth cut all around the inner surface is integrally installed at the mouth end of the screw cylinder, a through hole is punched in the end plate of the cap nut, and an electronic lock or cylinder lock is installed on the inner surface. Attach the link body, install an intermediary lever with a pawl piece that engages with the pawl teeth of the internal tooth ring in the groove on the back of the lock body, and a push spring for the pawl piece, and install an electronic lock or cylinder lock in the center of the groove. A locking device for a center wheel, characterized in that a cam is housed and brought into contact with an intermediary lever, and the cam moves a pawl piece forward and backward to engage or disengage the toe with an internal toothed ring.