JP3546869B2 - Automotive wheel mounting device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle wheel mounting comprising a screw coupling member for coupling a vehicle hub and a vehicle wheel, and a rotating tool for fitting and locking the screw coupling member to rotate the screw coupling member. Equipment related.
[0002]
[Prior art]
Conventionally, as such a wheel mounting device for automobiles, in the fitting of the screw coupling member and the rotary tool, a locking portion is formed with a plurality of ridges and grooves, respectively, and both of the words There is known a configuration in which the fitting and the locking of each other are allowed only when the shapes match, so that the rotation operation of the screw coupling member can be performed via the rotary tool. This is to protect expensive aluminum wheels and / or automobile wheels and / or tires from unauthorized theft. The following specific examples can be given.
[0003]
As a first example, there is a set of a plurality of nuts each having a word formed on an outer peripheral wall, and a set of exclusive wrenches that can be fitted and locked only to the nuts and sold. By attaching the vehicle wheel to the vehicle using the nut, it is impossible for others who do not have a dedicated wrench to remove the nut.
[0004]
As a second example, a nut having the structure shown in FIGS. An annular groove 101 is formed in the outer end surface of the nut 100, and words 102 and 103 are formed on opposing inner wall surfaces of the annular groove 101. On the side of a dedicated wrench (not shown) that can be fitted and locked to the nut 100, a cylindrical portion that can be inserted into the annular groove 101 is provided at the fitting end, and the outer periphery of the cylindrical portion is provided. A word is formed on each of the surface and the inner peripheral surface. In the case of this example, the nut and the wrench can be fitted only when the two pairs of words formed between the annular groove 101 of the nut 100 and the cylindrical portion of the wrench match, and the two rotate. The direction can be locked.
[0005]
[Problems to be solved by the invention]
In the device of the first example, the types of nuts having different shapes of the words are limited to several types (for example, six types) in terms of manufacturing cost. Therefore, several types (for example, six types) corresponding to the several types of nuts are used. Preparing the wrench made it possible to access the nut, and could not sufficiently prevent fraud.
[0006]
In this regard, the device of the second example (FIGS. 8 and 9) has two pairs of words interposed between the nut and the wrench, so that the number of deformation patterns can be dramatically increased. It was impossible to prepare many wrenches, and the fraud prevention effect could be significantly improved.
[0007]
However, in the case of the second example, the process of forming the annular groove 101 and the words 102 and 103 on the outer end surface of the nut 100 has to be performed using a cutting tool such as an end mill. Not only is it bad, but also some drawbacks arise in that the depth of the annular groove 101 cannot be made sufficiently deep. That is, each time the patterns of the words 102 and 103 are changed, setting and adjustment of a cutting tool such as an end mill are required. In addition, since the annular groove 101 is shallow, fitting and locking with the cylindrical portion on the wrench side are easily released, and rotation of the nut becomes difficult. In addition, the center part of the outer end face of the nut can be cut and removed with a drill or the like, and by removing the inner ward 103, fraudulent operation is possible by preparing a wrench with the number of patterns of the outer ward 102. Would.
[0008]
The present invention has been made in view of the above problems, and not only prevents impropriety, but also has good manufacturing efficiency, and can be firmly fitted and locked so that there is no possibility of disengagement. It is intended to provide a mounting device.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, a structure in which a word hole is formed in the outer end surface of the screw coupling member, and the screw shaft is attached to the screw coupling member and another member on the central axis of the word hole. Features.
[0010]
That is, the present invention provides an automobile comprising a screw coupling member for coupling a hub of an automobile to a vehicle wheel, and a rotating tool for rotating the screw coupling member by fitting and locking the screw coupling member. In the wheel mounting device for
In the outer end surface of the screw coupling member, a word hole having a word formed on the inner wall surface is formed, and a word shaft having a word formed on the outer peripheral surface is mounted on the center axis of the word hole. ,
On the fitting end surface of the rotary tool, a cylindrical portion that can be inserted into an annular groove formed by the word hole and the word shaft is provided, and a word corresponding to the word hole is formed on an outer peripheral surface of the cylindrical portion. While being formed, a word corresponding to the word axis is formed on the inner peripheral surface of the cylindrical portion,
A rotary tool in which a cylindrical portion of a rotary tool having a word formed on an outer peripheral surface thereof can be fitted into a word hole of the screw coupling member, and a word is formed on an inner peripheral surface of a word shaft of the screw coupling member. A screw mounting member and a rotating tool are fitted to each other and locked in a rotating direction only when the cylindrical portion of the vehicle can be fitted.
[0011]
In such a configuration, the screw coupling member may be a bolt or a nut, but is preferably a nut having a circular outer periphery. In this case, a through hole is provided in the center of the partition wall that separates the thread portion of the nut and the word hole, the mounting shaft of the word shaft is inserted into the through hole, and the mounting shaft is caulked to form the word shaft. Can be fixed to the nut.
[0012]
Since the word shaft is a separate member from the nut, burying steel quenching pins along the central axis or hardening the word shaft itself by quenching it to prevent cutting and removal by a drill etc. Can be.
[0013]
[Action]
As described above, the vehicle wheel mounting apparatus of the present invention has a structure in which a word hole is formed in the outer end surface of the screw coupling member and the word shaft is mounted on the center axis of the word hole. Forging technology can be used for forming, improving the efficiency of production, making it possible to form the depth of the word hole sufficiently, and ensuring a sufficient fitting depth with the rotating tool. be able to.
[0014]
In addition, it is possible to bury a steel quenching pin in the word shaft attached to the center axis of the word hole, or to harden the word shaft by quenching it by using a steel as the word shaft. Cutting is not accepted, and removal of the word shaft can be prevented.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0016]
FIG. 1 shows an automobile wheel mounting apparatus according to an embodiment. The apparatus is configured such that the screw connection member is a nut 10 and the rotating tool is a wrench adapter 40. As shown in FIGS. 6 and 7, the nut 10 is used to connect the wheel 62 to the hub 61 of the vehicle. The screw shaft 64 of the hub 61 is inserted into the mounting hole 63 of the wheel 62, The nut 10 is connected to the protruding portion of. When the nut 10 is connected, the wrench adapter 40 is fitted and locked on the nut 10, and the nut 10 is rotated and tightened via the wrench adapter 40. In the figure, reference numeral 65 denotes a tire.
[0017]
The nut 10 has a circular outer periphery so that a rotating tool such as a wrench cannot be locked from the outside. A screw portion (female screw) 11 for coupling with a screw shaft 64 of the hub 61 of the automobile is formed from one end (right end in FIG. 1) to the other end along the central axis. The outer periphery of the end where the screw portion 11 opens is tapered by a conical tapered surface 12.
[0018]
At an end (outer end) opposite to the end where the screw portion 11 is provided, a word hole 14 having an inner wall surface as a word 13 is formed in the end surface, and the screw portion 11 and the partition wall 15 are formed. Adjacent and sandwiched. As shown in FIG. 2, the word 13 is configured by alternately repeating the ridges 16 and the grooves 17, and the width and height (depth) of each of the ridges 16 and the grooves 17. ) Is a specific size, thereby having a key function as a whole.
[0019]
A word shaft 19 having a word 18 formed on the outer peripheral surface is attached to the inside of the word hole 14 and on the central axis. The length of the word shaft 19 is substantially equal to the depth of the word hole 14 so that the end face faces the outer end face of the nut 10 substantially flush. Similarly to the case of the above-mentioned word hole 14, the word 18 of the word shaft 19 is arranged such that convex and concave grooves having a specific width and height (depth) are alternately repeated. It has a key function as a whole.
[0020]
In order to attach the word shaft 19 to the word hole 14 of the nut 10, as shown in FIG. 4, the word shaft 19 is provided with a mounting shaft 20 extending on the center axis. The nut 10 is provided with a through hole 21 in a partition wall 15 between the word hole 14 and the screw portion 11 so that the mounting shaft 20 can be inserted therethrough. The word shaft 19 is disposed in the word hole 14, and the mounting shaft 20 protruding toward the screw portion 11 through the through hole 21 is deformed by caulking as shown in FIG. 1 to attach the word shaft 19.
[0021]
As shown in FIG. 4, the through-hole 21 includes a circular hole 22 having a diameter substantially equal to the diameter of the mounting shaft 20 and a cutout 23 formed at the edge of the hole. However, when the attachment shaft 20 is crimped, a part of the meat of the attachment shaft 20 moves into the notch 23 and locks as shown in FIG. 5, so that the word shaft 19 does not rotate around the central axis. Fixed.
[0022]
The mounting shaft 20 provided for mounting the word shaft 19 has a round hole 24 provided along the central axis, and the round hole 24 extends to the inside of the word shaft 19. This round hole 24 is for embedding a hard pin 25 in the word shaft 19, and prior to the above-mentioned caulking, a pin 25 made of a hardened steel pin is inserted into the round hole 24. As shown in FIG. 1, the pin 25 is embedded and fixed on the center axis of the word shaft 19 by caulking the mounting shaft 20.
[0023]
Next, the structure of the wrench adapter 40 will be described. As shown in the figure, the wrench adapter 40 has a hexagonal column 42 formed at one end (the left end in FIG. 1) of a cylindrical shaft 41, and fits and locks a normal wrench (not shown). The shaft 41 can be rotated. A cylindrical portion 43 having a shape as shown in FIGS. 1 and 3 is provided at an end opposite to the hexagonal column portion 42.
[0024]
The cylindrical portion 43 can be inserted into the annular groove 26 formed by the word hole 14 of the nut 10 and the word shaft 19, and has a length enough to be inserted into the annular groove 26. I have. On an outer peripheral surface of the cylindrical portion 43, a word 44 corresponding to the word 13 of the word hole 14 is formed, and on an inner peripheral surface of the cylindrical portion 43, a word 18 corresponding to the word 18 of the word shaft 19 is formed. A formed word 45 is formed.
[0025]
In the vehicle wheel mounting device of the above embodiment, the word 13 of the word hole 14 of the nut 10 and the word 44 formed on the outer peripheral surface of the cylindrical portion 43 of the wrench adapter 40 correspond to each other. The cylindrical portion 43 can be fitted. Further, since the word 18 of the word shaft 19 attached to the nut 10 and the word 45 formed on the inner peripheral surface of the cylindrical portion 43 of the wrench adapter 40 correspond to each other, the cylindrical portion 43 is fitted to the word shaft 19. It is possible. Therefore, the cylindrical portion 43 of the wrench adapter 40 can be inserted into the annular groove 26 of the nut 10, and the nut 10 and the wrench adapter 40 can be fitted and locked together in the rotation direction. As a result, the nut 10 can be rotated via the wrench adapter 40. In the case of the ward 44 not corresponding to the ward 13 and / or the ward 45 not corresponding to the ward 18, the fitting and locking of the nut 10 and the wrench adapter 40 can be prevented.
[0026]
By setting the number of patterns of the word 13 of the word hole 14 to m and the number of patterns of the word 18 of the word shaft 19 to n, mn patterns can be aligned, thereby preventing fraud. Can be done. Further, even the same word shaft 19 can be attached by rotating it around the central axis in the word hole 14, and this rotation can change the relationship between the word hole 14 and the word 13. The number of possible patterns can be further increased dramatically, and a deterrent effect of preventing unauthorized attempts can be expected.
[0027]
In addition, the structure in which the nut 10 and the separate word shaft 19 are mounted on the center axis of the word hole 14 of the nut 10 has the following operational effects in manufacturing. That is, first, the word hole 14 can be formed by forging. As a result, efficient manufacturing is possible and mass productivity can be improved.
[0028]
Second, since the word hole 14 can be formed by forging, the depth of the word hole 14 can be made sufficiently large, and the fitting depth of the wrench adapter 40 with the cylindrical portion 43 can be reduced. It can be deepened to ensure that the nut 10 and the wrench adapter 40 are locked, and that there is no possibility that the nut 10 will come off during the rotation operation.
[0029]
Third, the partition wall 15 in which the through hole 21 is formed in the nut 10 is formed, so that the plating process on the outer surface of the nut 10 is facilitated, and the nut 10 having a good finish can be manufactured. it can.
[0030]
Fourth, it is possible to adopt a structure in which a pin 25 is embedded in the word shaft 19, and by using the pin 25 as a hardened pin made of steel, the word shaft 19 can be removed with a cutting tool such as a drill. In addition, the tool can hit the pin 25 to make it impossible to remove the cutting. Thus, again, fraudulent attempts can be broken. In the embodiment, the pin 25 made of a steel quenched pin is buried in the interior of the word shaft 19. However, the word shaft is made of steel and the whole is hardened by quenching, and a drill or the like is used. It is also possible not to accept the cutting tool. In this case, the round hole 24 provided for embedding the pin 25 can be omitted.
[0031]
In addition, the wrench adapter 40 can be provided as a wrench by providing a handle in the radial direction from the shaft body 41.
[0032]
【The invention's effect】
As described above, according to the present invention, a nut hole is formed in the outer end surface of the nut, and a nut shaft separate from the nut is mounted in the word hole. In addition, there is an effect that an excellent automobile wheel mounting device can be provided which has good manufacturing efficiency, can firmly engage and lock, and does not have a possibility of disengagement during a rotation operation.
[Brief description of the drawings]
FIG. 1 is a front view showing a nut in a cross section according to an embodiment of the present invention.
FIG. 2 is a side view of the nut of the embodiment on the outer end surface side.
FIG. 3 is a side view of the wrench adapter of the embodiment on a fitting end surface side.
FIG. 4 is an exploded perspective view illustrating a mounting structure of a word shaft according to the same embodiment.
FIG. 5 is a cross-sectional view of an engagement portion between a mounting shaft of a word shaft and a partition wall of a nut according to the same embodiment.
FIG. 6 is a diagram showing a relationship between a hub of an automobile and an automobile wheel.
FIG. 7 is a front view of an automobile wheel.
FIG. 8 is a sectional view of a nut in a conventional vehicle wheel mounting device.
FIG. 9 is a side view of the outer end surface side of the nut shown in FIG. 8;
[Explanation of symbols]
Reference Signs List 10 nut 11 screw portion 13 word 14 word hole 15 partition wall 18 word 19 word shaft 20 mounting shaft 21 through hole 25 pin 40 wrench adapter 43 cylindrical portion 44 word 45 word 61 hub 62 wheel

Claims (8)

It comprises a screw coupling member 10 for coupling a hub 61 of an automobile and a wheel 62 for an automobile, and a rotating tool 40 for fitting and locking the screw coupling member 10 to rotate the screw coupling member 10. In wheel mounting equipment for automobiles,
In the outer end surface of the screw coupling member 10, a word hole 14 having a word 13 formed on an inner wall surface is formed, and a word 18 is formed on a central axis of the word hole 14 on an outer peripheral surface. A shaft 19 is attached,
A cylindrical portion 43 that can be inserted into the annular groove 26 formed by the word hole 13 and the word shaft 19 is provided on the fitting end surface of the rotary tool 40. A word 44 corresponding to the hole 14 is formed, and a word 45 corresponding to the word shaft 19 is formed on the inner peripheral surface of the cylindrical portion 43.
The cylindrical portion 43 of the rotary tool 40 having the outer surface formed with the word 44 can be fitted into the word hole 14 of the screw coupling member 10, and the word shaft 19 of the screw coupling member 10 can be fitted on the inner peripheral surface. Only when the cylindrical portion 43 of the rotary tool 40 on which the ward 45 is formed can be fitted, the screw coupling member 10 and the rotary tool 40 are fitted to each other and locked in the rotation direction. Automotive wheel mounting device. The screw coupling member 10 is a nut 10 having a circular outer periphery. A through hole 21 is provided at the center of a partition wall 15 that separates a screw portion 11 of the nut 10 and a word hole 14. 2. The vehicle wheel mounting device according to claim 1, wherein the mounting shaft 20 is inserted, and the word shaft 19 is fixed to the nut 10 by caulking the mounting shaft 20. 3. The automobile wheel mounting device according to claim 1 or 2, wherein the steel quenching pin (25) is embedded in the word shaft (19) along the central axis. The vehicle wheel mounting device according to claim 1 or 2, wherein the word shaft (19) is made of steel and hardened by quenching. It comprises a screw coupling member 10 for coupling a hub 61 of an automobile and a wheel 62 for an automobile, and a rotating tool 40 for fitting and locking the screw coupling member 10 to rotate the screw coupling member 10. In wheel mounting equipment for automobiles,
The screw coupling member 10 is a nut 10 having a circular outer circumference. A nut hole 14 having a wall 13 formed on an inner wall surface is formed in an outer end surface of the nut 10. Adjacent to the partition wall 15, a word shaft 19 having a word 18 formed on the outer peripheral surface is disposed on the central axis of the word hole 14, and a mounting shaft 20 extending from the word shaft 19 is connected to the partition wall 15. 15 is fixed by caulking through a through hole 21 formed in the center of the rotary tool 15, and is formed in an annular groove 26 formed by the word hole 14 and the word shaft 19 on the fitting end face of the rotary tool 40. An insertable cylindrical portion 43 is provided, and a wall 44 corresponding to the word hole 14 is formed on the outer peripheral surface of the cylindrical portion 43. And to Uodo 45 is formed corresponding to the Uodo shaft 19,
The cylindrical portion 43 of the rotary tool 40 having the outer surface formed with the word 44 can be fitted in the word hole 14 of the nut 10, and the word shaft 19 of the nut 10 has a word 45 formed on the inner surface. The wheel mounting device for an automobile, wherein the nut 10 and the rotary tool 40 are fitted to each other and locked in the rotating direction only when the cylindrical portion 43 of the rotary tool 40 is fittable. The automobile wheel mounting device according to claim 5, wherein the steel quenching pin (25) is embedded along the central axis of the word shaft (19). The vehicle wheel mounting device according to claim 5, wherein the word shaft (19) is made of steel and hardened by quenching. The vehicle wheel mounting device according to any one of claims 1 to 7, wherein the rotary tool 40 is a wrench or a wrench adapter 40.

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