JPH0448962Y2 - - Google Patents

Description

[Detailed description of the invention] ``Purpose of the invention'' (Industrial application field) The present invention relates to a wheel center lock mechanism for vehicles. The object of the present invention is to provide a mechanism that can automatically center a wheel hub that covers the wheel hub appropriately, and can easily and accurately form a uniform crimped attachment state.

(Prior art) The wheels of passenger cars and the like are directly fastened to the axle with four or more bolts and nuts, but the wheels that are fastened in this way have the fastening nuts exposed on the surface of the wheel. It is not visually pleasing. Particularly during driving, there is a strong tendency for dust, mud, rainwater, etc. to adhere to the wheels, resulting in staining and corrosion, and therefore, attaching and detaching the wheels is extremely complicated and difficult, and requires special skills.

Therefore, in order to eliminate the disadvantage of such an exposed bolt/nut, the present inventors covered the axle end 20 with a wheel hub 21 and a spinner 22 as shown in FIG. 4 and screw the large nut 24 onto the end of the wheel hub 21.
The end portion 23 of the wheel hub 21 is connected to the spinner 22.
Receiving groove 25 formed in large nut 24 with larger diameter
The wheel hub 21 is crimped onto the wheel hub 21 through the spinner 22.

(Problem to be solved by the invention) However, in the conventional device shown in Fig. 2, a special tool is required to tighten the large nut 24 due to the large diameter of the screw, making the work difficult. It is complicated and requires special training or skill.

Furthermore, galling occurs at the contact surface 26 between the large nut 24 and the wheel hub 21, often resulting in poor tightening.

Furthermore, there is a disadvantage that rainwater and dust tend to adhere to the inner and outer surfaces of the large nut 24, making it difficult to clean them.

"Structure of the invention" (Means for solving the problem) A spiral shaft with a smaller diameter than the outer diameter of the spinner is provided protruding from the center of the spinner attached to the axle of the vehicle with a fastening nut, and A wheel hub having an inclined joint surface in the middle that joins with an annular inclined surface formed on the outside of the intermediate portion and surrounding a covering part for the fastening nut on the circumferential side is provided, and the upper end of the wheel hub is provided with a wheel hub. A ring plate is attached which forms opposing tapered surfaces and has an annular groove that fits into the opposing tapered surface, and the screw shaft is inserted into the taper hole formed in the center of the ring plate, and the screw shaft is inserted into the ring plate. A wheel center lock mechanism for a vehicle, characterized in that a nut having a tapered portion that connects with the tapered hole is screwed into the wheel hub, and the wheel hub and the spinner are engaged by a spline.

(Function) The nut can accurately press the wheel hub via the ring plate. A screw shaft with a diameter smaller than the outer diameter of the spinner is protruded from the center of the spinner, and a tapered part of a small nut screwed onto the screw shaft applies a balanced pressing force to the taper hole of the ring plate, The annular groove of the ring plate fits closely against the opposite tapered surface of the wheel hub and also applies a uniform rolling force, and the wheel hub that is rolled down in this way is guided by splines relative to the spinner and is driven by the inclined surface. It is fixed by joining. The alignment is automatically set by the joining guide using the tapered hole, opposing tapered surface, and inclined surface as described above.

The wheel hub effectively covers the outside of the bolt and nut that attaches the spinner, improving the appearance and preventing dust from forming on the head of the bolt and nut.
Prevent mud, rainwater, etc. from adhering and solidifying.

(Example) To explain a specific embodiment of the present invention as described above as shown in the attached drawings, a spinner 3 is attached to a bolt 1 of an axle 10 with a fastening nut 2, and a spinner 3 is attached to the center of the spinner 3. A screw shaft 13 having a smaller diameter than the spinner 3 protrudes from the spinner 3, has an inclined inner surface 4a that joins to an annular inclined surface 3a formed on the outer side of the intermediate portion of the spinner 3, and surrounds a covering portion 14 for the fastening nut 2 on the circumferential side. The wheel hub 4 formed by this process is exteriorized, and an opposing tapered surface 4b is formed at the upper end of the wheel hub 4.
A ring plate 5 having an annular groove 5a that fits with the opposing tapered surface 4b is attached, and the screw shaft 13 is inserted into the taper hole 15 formed in the center of the ring plate 5. A nut 6 having a tapered portion 16 is screwed onto the nut 6, and a cover 7 is placed over the setting portion of the nut 6, which is formed with an appropriate recess. In addition, wheel hub 4
and the spinner 3 are engaged with each other by a spline 8, so that the circumferential movement (rotation) of both parts 3, 4 is reliably transmitted.

``Effect of the invention'' According to the invention as explained above, a screw shaft with a diameter smaller than that of the spinner is protruded from the center of the spinner, and using this screw shaft, a ring plate having an annular groove can be mounted with a small nut. It is possible to tighten the entire part accurately by tightening it, and as mentioned above, the tightening operation is easy because it only requires a small nut.
In addition, tapered surfaces are adopted between the nut and the ring plate, between the ring plate and the upper end of the wheel hub, and between the wheel hub and the spinner, so that the overall fastening is effective and tight as the small nut is used as described above. It is assembled into a screwdriver and achieves automatic centering action to achieve stable and balanced tightening.
It has the effect of making the operation easier and more accurate, and is a highly effective device in practical terms.

[Brief explanation of the drawing]

The drawings show the technical contents of the present invention, and FIG. 1 is a cross-sectional view of a vehicle wheel center lock mechanism according to the present invention, and FIG. 2 is a cross-sectional view of a conventional one. However, in these drawings, 1 is a bolt and 2 is a bolt.
is a fastening nut, 3 is a spinner, 3a is an annular inclined surface thereof, 4 is a wheel hub, 4a is an inclined inner surface thereof, 4b is an opposing tapered surface thereof, 5 is a ring plate, 5a is an annular groove thereof, 6 is a nut, and 7 is a Cover, 8 is a spline, 10 is an axle, 13 is a screw shaft,
15 is a tapered hole, and 16 is a tapered portion.

Claims (1)

[Scope of utility model registration request] A spinner attached to an axle of a vehicle with a fastening nut has a spiral shaft with a smaller diameter than the outer diameter of the spinner protruding from the center thereof, and an inclined surface that connects to an annular inclined surface formed on the outside of the intermediate portion of the spinner. A wheel hub having a joint surface in the middle and surrounding a covering part for the fastening nut on the circumferential side is provided, and an opposing tapered surface is formed at the upper end of the wheel hub, and the wheel hub is fitted with the opposing tapered surface. A ring plate having an annular groove is attached, the screw shaft is inserted into a tapered hole formed in the center of the ring plate, and a nut having a tapered portion that connects with the taper hole is screwed into the screw shaft. A wheel center locking mechanism for a vehicle, characterized in that the wheel hub and spinner are brought together and engaged by a spline.