JP3246614U - Wheel nut locking device - Google Patents

Abstract

[Problem] To provide a wheel nut locking device that can prevent wheel nuts from loosening. [Solution] A wheel nut locking device 1 comprises a flat, annular member 10 having a plurality of bolt through holes 11 through which a plurality of hub bolts 31 protruding from a hub pass, and a plurality of caps 20 that are fitted over a plurality of wheel nuts 32 that are screwed onto the plurality of hub bolts 31. Each cap 20 has a cap body 21 that covers the wheel nut 32, and a fixing portion 22 that fixes the cap body 21 to the annular member 10. Each fixing portion 22 and the annular member 10 are fixed by a fixing screw 23. [Selected Figure] Figure 2

Description

This invention relates to a device for preventing wheel nuts from loosening.

Patent Document 1 discloses a rotation prevention device that includes multiple mounting parts that are press-fitted one by one onto the outer periphery of the wheel nut to prevent the wheel nut from loosening due to shocks, vibrations, etc. while driving, and a connecting part that connects these mounting parts together, with the multiple mounting parts and the connecting part being integrally molded from a soft material such as resin.

Japanese Utility Model Application Publication No. 6-43330

However, the rotating fastener described in Patent Document 1 is made of a soft material such as resin, so the binding force at the mounting part is weak, which causes the mounting part to rotate or shift, which can cause the wheel nut to loosen.

This invention was developed based on these problems, and aims to provide a wheel nut locking device that can prevent wheel nuts from loosening.

The wheel nut loosening prevention device of the present invention comprises a flat ring-shaped member with a plurality of bolt through holes through which a plurality of hub bolts protruding from the hub pass, and a plurality of caps that are placed over a plurality of wheel nuts that are screwed onto the plurality of hub bolts. Each of the caps has a cap body that covers the wheel nut and a fixing part that fixes the cap body to the ring-shaped member, and the fixing part and the ring-shaped member are fixed by a fixing screw.

According to this invention, a ring-shaped member is provided with multiple bolt through holes through which multiple hub bolts pass, and a cap is placed over the wheel nut. The cap and ring-shaped member are fixed with a fixing screw, so that the rotation of the wheel nut can be stopped and the wheel nut can be prevented from loosening. This makes it possible to prevent the wheel nut from falling off.

In addition, if the annular member is provided with one or more fixing screw holes into which fixing screws are inserted, at positions that correspond individually to the multiple bolt through holes and have a predetermined positional relationship with each bolt through hole, each cap screw hole in the fixing portion can be easily aligned with each fixing screw hole in the annular member.

1 is a diagram showing an overall configuration of a wheel nut loosening prevention device according to an embodiment of the present invention; 2 is a partial cross-sectional view taken along line II shown in FIG. 1. 2 is a diagram illustrating a configuration of the annular member illustrated in FIG. 1 .

The following describes in detail the embodiment of the present invention with reference to the drawings.

Figure 1 shows the configuration of a wheel nut loosening prevention device 1 according to one embodiment of the present invention. Figure 2 shows a partial cross-sectional configuration along line I-I shown in Figure 1. Figure 3 shows the configuration of the annular member 10 shown in Figure 1. This wheel nut loosening prevention device 1 prevents wheel nuts 32, which are screwed onto a plurality of hub bolts 31 protruding from a hub (not shown) to attach wheels (not shown) to the hub, from loosening and falling off, for example, in a vehicle such as a truck. The wheel nuts 32 are screwed onto the hub with the wheel sandwiched between them, for example, to attach the wheel to the hub. The hub bolts 31 are arranged, for example, concentrically and at equal intervals with respect to the axial center of the hub. The wheel nuts 32 are, for example, hexagonal nuts.

The wheel nut loosening prevention device 1 comprises a flat ring-shaped member 10 having a plurality of bolt through holes 11 through which a plurality of hub bolts 31 protruding from the hub pass, and a plurality of caps 20 that are fitted over a plurality of wheel nuts 32 that are screwed onto the plurality of hub bolts 31.

The annular member 10 can be made of a metal material such as stainless steel. The thickness of the annular member 10 is preferably about 5 mm to 6 mm. If the thickness is too thin, it is difficult to obtain sufficient strength, and if the thickness is too thick, it becomes heavy. The size of the annular member 10 can be set arbitrarily according to the vehicle model, as long as it can pass multiple hub bolts 21 through it. For example, the outer diameter of the annular member 10 can be about 350 mm, and the inner diameter of the annular member 10 can be about 220 mm. The number and size of the bolt through holes 11 can also be set arbitrarily according to the vehicle model. For example, the number of bolt through holes 11 can be 8, and the diameter of the bolt through holes can be about 23 mm.

The caps 20 are provided in accordance with the number of bolt through holes 11 in the annular member 10. FIG. 1 shows a case in which eight caps 20 are provided, which is the same number as the bolt through holes 11. Each of the caps 20 has a cap body 21 that covers the wheel nut 32 and a fixing portion 22 that fixes the cap body 21 to the annular member 10.

Each cap body 21 can be made of a metal material such as stainless steel, and is preferably configured to cover the entire wheel nut 32. When the wheel nut 32 is provided via a washer 33, it is preferable that the cap body 21 is configured to cover the entire wheel nut 32 including the washer 33. The inner periphery of each cap body 21 is preferably shaped to correspond to the outer periphery of the wheel nut 32 so as to fit into the wheel nut 32. For example, when the wheel nut 32 is a hexagonal nut, the inner periphery of the cap body 21 is preferably shaped like a hexagonal column to correspond to the outer periphery of the wheel nut 32. This is to allow the cap body 21 and the wheel nut 32 to rotate as one unit.

Each fixing portion 22 is, for example, provided with one end facing the cap body 21 and joined to the cap body 21, and with the other end facing the annular member 10. Each fixing portion 22 can be made of a metal material such as stainless steel. One end of each fixing portion 22 and each cap body 21 may be joined, for example, by a screw or the like, or may be joined by welding or adhesive. The other end of each fixing portion 22 and the annular member 21 are configured to be fixed by a fixing screw 23. One or more cap screw holes 24 into which the fixing screws 23 are inserted are formed in the other end of each fixing portion 22.

The annular member 10 is provided with one or more fixing screw holes 12 into which the fixing screws 23 are inserted, for example, corresponding to the bolt through holes 11 individually. The fixing screw holes 12 are preferably provided at positions that correspond to the bolt through holes 11 individually, for example, and have a predetermined positional relationship with each of the bolt through holes 11. FIG. 1 shows a case in which, when each bolt through hole 11 is viewed as being located on one side of the center of the annular member 10, each fixing screw hole 12 is formed at a position on the same side of each bolt through hole 11 in a direction perpendicular to the one direction. When the wheel nut 32 is screwed into the hub bolt 31, if the wheel nut 32 (for example, the position of a side of a hexagon) is positioned so as to have a predetermined positional relationship with respect to the annular member 10 and screwed into it, the positions of each cap screw hole 24 and each fixing screw hole 12 can be easily aligned.

This wheel nut loosening prevention device 1 is attached and used as follows. First, for example, the wheel nuts 32 are removed from the hub bolts 31, and the hub bolts 31 are passed through the bolt through holes 11 to place the annular member 10 so that the wheel is sandwiched between the hub and the annular member 10. Next, for example, the wheel nuts 32 are screwed onto the hub bolts 31 and attached. At that time, for example, if the wheel nuts 32 are hexagonal nuts, it is preferable that the sides of the hexagon face the fixing screw holes 12 provided corresponding to the bolt through holes 11 of the annular member 10. It should be noted that a washer 33 may be placed between the annular member 10 and each wheel nut 32 as necessary. Next, each cap body 21 is placed on each wheel nut 32, and each cap screw hole 23 of the fixing part 22 is aligned with each fixing screw hole 12 of the annular member 10. Next, fixing screws are screwed into each cap screw hole 23 and each fixing screw hole 12 to fix each cap 20 to the annular member 10. This stops the rotation of the wheel nuts 32.

As described above, according to this embodiment, the annular member 10 is provided with a plurality of bolt through holes 11 through which a plurality of hub bolts 31 pass, and the cap 20 is placed over the wheel nut 32. The cap 20 and the annular member 10 are fixed together with the fixing screw 23, so that the rotation of the wheel nut 32 can be stopped and the wheel nut 32 can be prevented from loosening. This makes it possible to prevent the wheel nut 32 from falling off.

In addition, if one or more fixing screw holes 12 into which fixing screws 23 are inserted are provided in the annular member 10 at positions that correspond individually to the multiple bolt through holes 11 and have a predetermined positional relationship with each bolt through hole 11, each cap screw hole 24 of the fixing portion 22 and each fixing screw hole 12 of the annular member 10 can be easily aligned.

Although the present invention has been described above with reference to an embodiment, the present invention is not limited to the above embodiment and can be modified in various ways. For example, in the above embodiment, each component is specifically described, but it is not necessary to include all components, and other components may be included.

1... Wheel nut loosening prevention device, 10... Annular member, 11... Bolt through hole, 12... Fixing screw hole, 20... Cap, 21... Cap body, 22... Fixing part, 23... Fixing screw, 24... Cap screw hole, 31... Hub bolt, 32... Wheel nut, 33... Washer

Claims (3)

a flat annular member having a plurality of bolt through holes through which a plurality of hub bolts protruding from a hub are inserted; and a plurality of caps that are fitted over a plurality of wheel nuts that are screwed onto the plurality of hub bolts,
Each of the plurality of caps has a cap body that covers the wheel nut and a fixing portion that fixes the cap body to the annular member,
a fixing screw that fixes the fixed portion to the annular member; the annular member is provided with one or more fixing screw holes into which the fixing screws are inserted at positions that correspond to the plurality of bolt through holes individually and have a predetermined positional relationship with each of the bolt through holes;
2. The wheel nut loosening prevention device according to claim 1, wherein the fixing portion is provided with one or more cap screw holes into which the fixing screws are inserted. 2. A wheel nut loosening prevention device according to claim 1, wherein the inner peripheral portion of the cap body is shaped to correspond to the outer peripheral shape of the wheel nut.

Images