JP2003011601A - Automobile wheel attaching device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automobile wheel attaching device preventing wrong fitting and locking even if having multiple types of rotary devices for a screw connecting member having deformed polygonal fitting and locking parts. SOLUTION: This automobile wheel attaching device comprises a nut 10 and a wrench adapter 40. The nut 10 and the wrench adapter 40 can be fitted and locked by a deformed polygonal hole 13 formed in the nut 10 and a deformed polygonal column 42 formed in the wrench adapter 40. A key post 24 is installed in the deformed polygonal hole 13 and its tip extends to an opening part 17 of the deformed polygonal hole 13, while the deformed polygonal column 42 is formed with a key hole 47 capable of fitting with the key post 24 in an end face 46. Only when the deformed polygonal column 42 and the deformed polygonal hole 13 are fitted to each other and the key post 24 and the key hole 47 are fitted to each other, the nut 10 and the wrench adapter 40 are locked in the rotation direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw coupling member for coupling an automobile hub and an automobile wheel, and a rotary tool for fitting and locking the screw coupling member to rotate the screw coupling member. The present invention relates to a configured vehicle wheel mounting device.

[0002]

2. Description of the Related Art Conventionally, in such a wheel mounting device for an automobile, irregular polygons are formed in the fitting and locking portions of the screw coupling member and the rotary tool, respectively, and both irregular polygons are matched with each other. It is known that fitting and locking of each other are allowed only when the rotation is performed so that the screw coupling member can be rotated through a rotary tool. This is to protect expensive aluminum wheels and / or tires for automobiles from unauthorized theft.

To give an example, a plurality of nuts each having an irregular polygonal outer wall and a dedicated wrench which can be fitted and locked only to the nuts are sold as a set. By using this nut to attach the vehicle wheel to the vehicle, it is impossible for others who do not have a dedicated wrench to remove the nut. There are also nuts provided with a plurality of ridges on the outer wall thereof with varying widths and intervals. In this specification, the polygon including the above and the regular polygon found in the ordinary screw coupling member and the rotary tool is defined as an irregular polygon.

[0004]

As described above, in the conventional automobile wheel mounting device in which the irregular polygon is interposed in the fitting / locking portion, there are several types of irregular polygons due to the manufacturing cost. Since it is limited to 6 types, for example,
By preparing several types (for example, six types) of rotary tools (wrench) capable of individually fitting and locking the several types of irregularly shaped polygons, it becomes possible to access the screw coupling member (nut). , I could not prevent enough fraud.

The present invention has been made in view of the above problems. Even if a plurality of types of rotary tools are provided for a screw coupling member having a deformed polygonal fitting and locking portion, incorrect fitting, An object of the present invention is to provide an automobile wheel mounting device capable of preventing locking.

[0006]

SUMMARY OF THE INVENTION The present invention, which has been made based on the above-mentioned object, has a feature that, in addition to the restriction of fitting and locking by the irregularly shaped polygons, the irregularly shaped polygons are also fitted by the key posts and the key holes. In this case, the locking can be limited.

That is, the present invention comprises a screw connecting member for connecting a hub of an automobile and a wheel for an automobile, and a rotary tool for fitting and locking the screw connecting member to rotate the screw connecting member. In the constituted vehicle wheel mounting device, the screw coupling member and the rotary tool can be fitted and locked by the irregular polygonal hole formed in the screw coupling member and the irregular polygonal column formed in the rotary tool. In addition, a key post is installed in the irregularly shaped polygonal hole, and its tip extends to the opening of the irregularly shaped polygonal hole, and the irregularly shaped polygonal column is fitted with the key post at the end face. A possible key hole is formed, and only when the irregularly shaped polygonal column and the irregularly shaped polygonal hole are fitted, and the key post on the screw coupling member side and the key hole on the rotary tool side are fitted, Rotary tool It has to be locked in rotational direction a vehicle wheel mounting system according to claim.

[0008]

According to the vehicle wheel mounting apparatus of the present invention thus constructed, even if the cross-sectional shape of the irregular polygonal hole of the screw coupling member and the irregular polygonal column of the rotary tool match.
Furthermore, if the positions, numbers, cross-sectional shapes, etc. of the key posts and key holes do not match, the screw coupling member and the rotary tool cannot be fitted, and therefore, they cannot be locked in the rotational direction. As a result, even if a deformed polygonal hole is assumed and several types of rotary tools that can be fitted in the hole are held, the presence of the key post prevents the fitting and prevents fraudulent acts.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows an automobile wheel mounting apparatus of the embodiment. Nut 10 as a screw coupling member
And a wrench adapter 40 as a rotary tool.

As shown in FIGS. 10 and 11, the nut 10 is for connecting the wheel 62 to the hub 61 of the automobile, and the hub 61 is fitted in the mounting hole 63 of the wheel 62.
The screw shaft 64 is inserted, and the nut 10 is coupled to the protruding portion of the screw shaft 64. When connecting the nut 10, the wrench adapter 40 is fitted and locked to the nut 10, and the nut 10 is rotated and tightened via the wrench adapter 40. In the figure, 65 is a tire.

The nut 10 has a cylindrical shape so that the rotary tool cannot be locked to the outer wall. A screw hole 11 for coupling with the screw shaft 64 is formed at one end along the central axis. The outer wall of the end where the screw hole 11 opens is tapered by a conical taper surface 12.

On the other end side of the nut 10, a deformed polygonal hole 1 is formed.
3 is formed. This irregularly shaped polygonal hole 13 is provided with a plurality of ridges 14 ... On the inner wall surface of the hole with varying widths and intervals as shown in FIG. A groove 15 is formed between the ridge and the ridge. The ridges 14 and the concave grooves 15 are formed up to the middle of the inner wall surface of the irregularly shaped polygonal hole 13, and from there to the bottom 16 are the inner wall surface of the circular hole. The two recessed grooves 15 a facing each other in the diametrical direction are formed to the bottom 16.

The wrench adapter 40 is adapted to be fitted and locked in such a deformed polygonal hole 13. That is, the deformed polygonal column 42 is formed at one end of the columnar shaft body 41. The deformed polygonal column 42 has the same diameter (nominal diameter) as the deformed polygonal hole 13 and, as shown in FIG.
A concave groove 43 is formed corresponding to the convex line 14, and a convex line 44 is formed corresponding to the concave groove 15.

In this way, the nut 10 and the wrench adapter 40 can be fitted and locked in the rotational direction by fitting the deformed polygonal holes 13 and the deformed polygonal columns 42 to each other. Has been done. If the numbers, widths, and intervals of the ridges 14 and the concave grooves 15 formed on the nut 10 side do not match the numbers, widths, and intervals of the ridges 44 and the concave grooves 43 on the wrench adapter 40 side, the fitting, engagement It cannot be stopped.

At the other end of the wrench adapter 40, a hexagonal prism portion 4 is provided.
5 is formed. When rotating the nut 10 via the wrench adapter 40, a normal wrench (not shown) is fitted and locked in the hexagonal column portion 45, and the wrench adapter 40 is rotated via the wrench. Instead of forming the hexagonal column portion 45, a handle (not shown) may be provided from the side wall of the shaft body 41 in the radial direction to form a wrench including the handle and the shaft body 41.

The irregular polygonal hole 13 and the irregular polygonal column 4 described above.
As described above, the limitation of fitting and locking by 2 is not sufficient for fraud prevention because the number of patterns is limited in actual manufacturing. Therefore, in the vehicle wheel mounting device of this embodiment, the key post is used. And another limiting means by means of a keyhole is further provided. The limiting means will be described in detail below.

As shown in FIG. 1, the post fixing base 20, the coil spring 21, and the closing plate 22, which are disassembled and shown in FIG. 4, are mounted in the irregular polygonal hole 13. is there.

In the post fixed stage 20, two key posts 24 are provided upright on a disk-shaped base portion 23. Key post 24
Has a cylindrical shape. The post fixing base 20 is mounted so as to be in contact with the bottom 16 of the irregularly shaped polygonal hole 13 so that each key post 24 extends to the opening 17 of the irregularly shaped polygonal hole 13. A claw projection 25 is provided on the peripheral edge of the base portion 23 and is locked in the recessed groove 15a formed up to the bottom 16 of the irregularly shaped polygonal hole 13, and the base portion 23 rotates to cause the key post 2 to rotate.
The arrangement position of 4 does not change. A fixing ring 26 (FIG. 1) is engaged with the base portion 23 in contact with the bottom 16 so that the post fixing base 20 does not come out toward the opening portion 17 side.

The closing plate 22 is movable in the axial direction within the irregularly shaped polygonal hole 13, and an outer cylinder 28 and an inner cylinder 29 are provided on a disc body 27 matched to the shape of the irregularly shaped polygonal hole 13. It has a different structure. In addition, the board 27 is formed with an opening 30 that matches the arrangement position of the key post 24 and through which the key post 24 can be inserted.

The coil spring 21 is for constantly urging the movable closing plate 22 toward the opening 17 side of the irregular polygonal hole 13 as described above, and one end thereof forms the closing plate 22. It is mounted inside the outer cylinder 28 so that the other end is mounted on the base 23 of the post fixing base 20. A stopper screw inserted through the washer 31 from the base 23 side of the post fixing base 20 in order to prevent the closing plate 22 biased by the coil spring 21 toward the opening 17 side from stopping at the position of the opening 17 and from falling off. 32 is the inner cylinder 29
Is connected to.

Corresponding to the key post 24 installed in the irregular polygonal hole 13 of the nut 10, the irregular polygonal column 42 of the wrench adapter 40 has a key hole on the end face 46 as shown in FIGS. 47 is formed. The key hole 47 is a round hole having a diameter substantially equal to the diameter of the cylindrical key post 24, and the key post 24 can be inserted therein. Two are formed corresponding to the two key posts 24,
The arrangement position is also the same as the arrangement position of the key post 24.

The wrench adapter 40 of this embodiment, in which the limiting means by the key post 24 and the key hole 47 is configured in this way, allows the irregular polygonal column 42 to be fitted into the irregular polygonal hole 13 of the nut 10, and At that time, the irregularly shaped polygonal column 42 is attached to the key post 24 installed in the irregularly shaped polygonal hole 13.
The key hole 47 provided in the end surface 46 of the can be fitted.
Therefore, fit the wrench adapter 40 to the nut 10,
The nut 10 can be locked and the nut 10 can be rotated.

FIGS. 5 and 6 show the modified polygonal hole 1 of the nut 10.
3A and 3B show how the fitting restricting means constituted by the post fixing base 20, the coil spring 21, and the closing plate 22 installed inside 3 are changed. In FIG. 5, before the wrench adapter 40 is fitted, the closing plate 22 is biased by the coil spring 21 and stops at the opening 17 and is substantially flush with the tip of the key post 24. In this state, the closing plate 22 closes the opening 17 of the irregular polygonal hole 13 as shown in FIG. Block 22
By closing the opening 17 in this way, the key post 24
The key post 24 is prevented from being deformed by being hit by a stone or other object while the vehicle is running.

In FIG. 6, when the wrench adapter 40 is fitted, the closing plate 22 is pushed by the deformed polygonal column 42 of the wrench adapter 40 and moves to the post fixing base 20 side. The key post 24 is maintained as it is and protrudes through the opening 30 formed in the board body 27 of the closing board 22, and the key hole 47 formed in the end surface 46 of the irregularly shaped polygonal column 42 is fitted therein. The state in which the closing board 22 has moved is also shown in a sectional view in FIG. 7.

Although the number of each of the key posts 24 and the number of the key holes 47 are two, the number may be one or three or more. By changing the arrangement positions of the key post 24 and the key hole 47, fitting and locking can be restricted even for the deformable polygonal hole 13 and the pillar 42 that can be fitted.

FIG. 8 shows an example in which the arrangement position of the key post 24 is changed. Key post 2 in Figure (a)
The deformed polygonal column 42 in which the key hole 47 is formed so as to match the arrangement position of No. 4, when the key post 24 tries to fit into the deformed polygonal hole 13 arranged as shown in FIG. 24 hits the end face 46 of the irregularly shaped polygonal column 42 to prevent the fitting.

The shape of the irregular polygonal hole 13 and the pillar 42 is 6
In the case of types, the number of pattern changes can be increased to 12 by using two types of arrangement patterns for the key posts 24 and the key holes 47. That is, the number of shapes of the irregularly shaped polygonal hole 13 and the pillar 42 is m, and the key post 24 and the key hole 47 are
It is possible to configure m × n types of patterns, where n is the number of arrangement patterns.

The key post 24 and the key hole 47 have a circular cross section in each of the embodiments.
It is also conceivable that one or both of the key holes 47 and the key holes 47 have an elliptical or polygonal sectional shape, and the number of patterns can be further increased.

Although the case where the screw coupling member is the nut 10 has been described above, the nut 10 can be similarly implemented by using the bolt 50 as shown in FIG. In the figure,
51 is a screw shaft. The bolt head 52 has a cylindrical shape, and an irregular polygonal hole 13 is formed in the end surface of the bolt head 52. The post fixing base 20, the coil spring 21, and the closing plate 22 are mounted therein.

[0031]

As described above, in the vehicle wheel mounting device of the present invention, in addition to the means for restricting the fitting by the deformed polygonal hole and the deformed polygonal column, the restriction by the key post and the key hole is restricted. Since the configuration is provided with the means, it is possible to increase the number of types of changes, and it is possible to provide a device effective in preventing fraud.

[Brief description of drawings]

FIG. 1 is a front view showing a part (nut side) of an embodiment of the present invention in cross section.

FIG. 2 is a side view on the opening side of a modified polygonal hole of a nut.

FIG. 3 is a side view of an end face side of a deformed polygonal column of the wrench adapter.

FIG. 4 is an exploded perspective view illustrating a fitting limiting means by a key post mounted in a deformed polygonal hole and a key hole formed on an end surface of the deformed polygonal column.

FIG. 5: Of the fitting limiting means mounted in the irregularly shaped polygonal hole,
It is a perspective view of the state urged by the coil spring.

FIG. 6 shows a fitting limiting means mounted in the irregular polygonal hole,
It is a perspective view of the state where it was pushed by the deformed polygonal column (not shown) which fitted.

FIG. 7 is a sectional view of the nut in a state in which the fitting limiting means mounted in the odd-shaped polygonal hole is also pressed by the fitted odd-shaped polygonal column (not shown).

8 (a) and 8 (b) are pattern diagrams for explaining a change in the arrangement position of the key post that constitutes the fitting limiting means.

FIG. 9 is a front view showing, in cross section, a part of an embodiment in which a bolt is a screw coupling member.

FIG. 10 is a diagram showing a relationship between an automobile hub and an automobile wheel.

FIG. 11 is a front view of a vehicle wheel.

[Explanation of symbols] 10 nuts 13 Deformed polygonal hole 17 openings 22 Block 24 key posts 30 openings 40 wrench adapter 42 Deformed polygonal pillar 46 Edge 47 keyhole 50 volts 61 hub 62 wheels

Claims (5)

[Claims] 1. A screw coupling member 10, 50 for coupling a hub 61 of an automobile and a wheel 62 for an automobile, and the screw coupling member 10, 50 fitted and locked to the screw coupling member 10, 50. In a vehicle wheel mounting device configured with a rotating tool 40 for rotating, in the fitting and locking of the screw coupling members 10, 50 and the rotating tool 40, a deformed polygon formed in the screw coupling members 10, 50 Hole 13 and irregular polygonal column 42 formed on rotary tool 40
In addition, the key post 24 is installed in the irregularly shaped polygonal hole 13 and the tip thereof extends to the opening 17 of the irregularly shaped polygonal hole 13. A key hole 47 that can be fitted to the key post 24 is formed on the end surface 46, and the irregular polygonal column 42 and the irregular polygonal hole 13 are fitted to each other.
Moreover, the screw coupling members 10, 50 and the rotary tool 40 are locked in the rotational direction only when the key posts 24 on the screw coupling members 10, 50 side and the key holes 47 on the rotary tool 40 side are fitted together. Characteristic automobile wheel mounting device. 2. The vehicle wheel mounting device according to claim 1, wherein the number of the key posts 24 and the number of the key holes 47 are each one to plural. 3. An obturator 22 having an opening 30 into which a key post 24 can be inserted is formed in an opening 17 of the oddly shaped polygonal hole 13, and is closed on the bottom side to close the opening 17. The vehicle wheel mounting device according to claim 1 or 2. 4. The wheel mounting device for an automobile according to claim 1, wherein the screw coupling member is a nut 10 or a bolt 50. 5. The vehicle wheel mounting device according to claim 1, wherein the rotary tool is a wrench 40 or a wrench adapter.