JP2510031Y2 - Coverless wheel disks for automobiles - Google Patents

Description

[Detailed description of the device]

[0001]

FIELD OF THE INVENTION The present invention relates to a coverless wheel disk for an automobile.

[0002]

2. Description of the Related Art Conventional wheel disks for automobiles include
A separate center cover is attached from the front of the wheel, which covers the axle and its hub bolts and nuts so that the appearance of the wheel itself does not feel unnatural.

[0003]

Therefore, in addition to the wheel disc, a center cover and its mounting work are required, and a special structure must be added to support the center cover so that it cannot fall off. As a result, the mass production effect cannot be expected to the maximum yet, and there is a disadvantage in that the wheel disk itself is inferior in the appearance and cosmetic sense of unity.

[0004]

SUMMARY OF THE INVENTION The present invention is intended to improve such a problem, and for this purpose, the bottom surface of the groove of the mounting barrel having a U-shaped cross section is used as a mounting seat for the hub of the axle. An axle receiving hole is formed in the central portion, and a plurality of hub bolt receiving holes are formed in the eccentric portion, respectively, and a blade plate is fastened to the tire supporting rim radially outward from the position corresponding to the opening front edge of the mounting body. In a wheel disk for automobiles that continuously overhangs,

From the position corresponding to the front edge of the opening of the mounting body to the inner side in the radial direction, the opening surface of the mounting body is covered.
The center cover is continuously and integrally projected, and a shaft insertion hole for a wheel balancer is formed in the center of the center cover, and a tool insertion hole corresponding to the hub bolt receiving hole is also formed in the eccentric part. On the circumferential surface of the body, a plurality of drainage holes for draining rainwater that has infiltrated into the bag covered by the center cover by rotating centrifugal force are distributed.

[0006]

According to the above construction of the present invention, since the center cover is continuously and integrally molded with the wheel disk itself, there is no need to separately prepare and attach it to the disk, and the center cover cannot be removed. Combined with the fact that there is no need to add a special structure to support, it is possible to maximize the effect of mass production.

Further, since the wheel disk of the present invention is an integrated product, and the blade and the center cover are continuous, the appearance and cosmetic effect can be remarkably enhanced as compared with the conventional product in which a separate center cover is attached. There is no danger of discomfort.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The detailed construction of the present invention will be described below with reference to the illustrated embodiments. The wheel disk is cast from a light alloy into an integral shape as shown in FIGS. The cross-sectional shape is especially suitable for wheels of four-wheel drive vehicles.

That is, in FIGS. 1 to 3, (10) is a mounting cylinder forming the center of the wheel disk, which has a basic U-shaped cross section, and, so to speak, the bottom of the groove is the hub of the axle ( It becomes a mounting seat (12) for 11).
(13) is an axle receiving hole that opens at the center of the mounting seat (12), and (14) is a plurality of hub bolt receiving holes that are also formed at eccentric positions, and are distributed in a radial symmetry type as a whole. ing.

As shown by the chain line in FIG. 3, a hub nut (16) is fastened to the hub bolt (15) which is erected from the hub (11) of the axle so that the hub nut (16) is attached to the hub (11). Needless to say, it is being used.

Further, (17) is a blade which is continuously and integrally projected outwardly in the radial direction from a position corresponding to the opening front edge of the mounting cylinder (10) having a U-shaped cross section, and a midway portion of the projection. A plurality of heat dissipation holes (19) are distributed in the tire, and a tire supporting rim (18) is also provided on the protruding peripheral edge.
And a plurality of bolt receiving holes (21) are provided. Through the bolts and nuts (not shown) which penetrate the bolt receiving holes (21), they are fastened and integrated with the rim (18).

In this case, as is clear from FIG. 3, the vane (17) is gradually inclined rearward as it goes to its peripheral edge, whereby the front surface of the vane (17) is convexly curved ( It is shaped as a). However, its wings (17)
The overhanging peripheral edge portion of No. 2 remains at a position where it does not reach the extension plane of the mounting seat (12).

Similarly, (22) is continuously and integrally projected from the position corresponding to the opening front edge of the mounting barrel (10) toward the inner side in the opposite radial direction so as to cover the opening surface having a U-shaped cross section. The center cover, and the center cover (2
The front surface of 2) is shaped into a uniform convex curved surface (b) continuous with the convex curved surface (a) of the vane (17).

On the other hand, the rear surface of the center cover (22) is a convex curved surface (c) having a radius of curvature smaller than that of the front surface thereof.
As a result, the wall thickness is gradually reduced toward the center. Therefore, the flow of the molten metal at the time of disk casting is smoothed, and there is no possibility that porosity will occur. In addition, the convex curved surface (a) is generated by the centrifugal force when the disk is used.
Rainwater, dust, etc. will be effectively eliminated along (b) and (c).

Reference numeral (23) is a shaft insertion hole for the wheel balancer opened in the thinnest center portion of the center cover (22). As shown in FIG. It is used to measure the balance when replacing the tire by inserting it into 24). Reference numeral (25) in FIG. 4 is a fixing taper cone,
Reference numeral (26) is a fixed nut that is fastened to the screw end of the rotary shaft (24).

Further, (27) is the center cover (2
A tool insertion hole formed in the eccentric position of 2),
The hub nut receiving hole (14) is matched with the hole, and a tool (not shown) inserted through the hole can be used to fasten the hub nut (16) to the hub bolt (15).

Further, (28) is a plurality of radial ribs which are similarly continuously and integrally projected from the rear surface of the center cover (22), and (29) is a plurality of radial ribs formed on the circumferential barrel surface of the mounting barrel (10). It is a drainage hole of the center cover (2
2) It is continuous with the convex curved surface (c) forming the rear surface and opens on the extension plane of the convex curved surface (c).

That is, the shaft insertion hole (23) for the wheel balancer, which is opened at the center of the center cover (22),
Even if rainwater intrudes into the bag of the mounting barrel (10) from the tool insertion hole (27) that also opens in the eccentric part, the rotation centrifugal force of the disk will cause the rainwater to flow between adjacent radiating ribs (28). A concave flow path is provided between the drain holes (29) and the drainage holes (29) so that water can be drained to the outside of the mounting cylinder (10).

Needless to say, even if the opening surface of the mounting cylinder (10) is covered with the center cover (22), the disk can be cast as an integral product by inserting the core into the bag.

[0020]

As described above, according to the present invention, the bottom surface of the groove of the U-shaped cross-section mounting body (10) is used as the mounting seat (12) for the hub (11) of the axle, and the central part of the mounting seat (12) is provided. Is formed with an axle receiving hole (13), and a plurality of hub bolt receiving holes (14) are also formed in the eccentric portion, and the tire supporting member is supported from the position corresponding to the opening front edge of the mounting body (10) to the outer side in the radial direction. In a wheel disc for an automobile, in which a vane (17) for fastening to a rim (18) is continuously and integrally projected,

A center cover (22) is continuously and integrally projected from the position corresponding to the front edge of the opening of the mounting body (10) inwardly in the radial direction so as to cover the opening surface of the mounting body (10). A shaft insertion hole (23) for a wheel balancer is formed in the center of the center cover (22), and a tool insertion hole (27) corresponding to the hub bolt receiving hole (14) is formed in the eccentric part. , The center cover (2
Since the rainwater that has infiltrated into the bag covered by 2) has a plurality of drain holes (29) to be drained by the centrifugal force of rotation, it is possible to surely improve the problems of the prior art described at the beginning. There is.

That is, according to the above configuration of the present invention, the center of the mounting cylinder (10) is formed so as to cover the opening surface of the mounting cylinder (10) from a position corresponding to the opening front edge of the mounting cylinder (10) having a basic U-shaped cross section. Since the cover (22) is formed so as to continuously and integrally project inward in the radial direction, there is no need to prepare a separate center cover or attach it to the disk as in the conventional product, and the mass production effect can be obtained. You can expect the maximum, and there is no risk of accidentally dropping it or encountering theft.

Further, since the wing plate (17) of the wheel disc and the center cover (22) are continuously integrated, there is no fear of giving a feeling of strangeness in appearance and makeup as compared with the conventional product in which a separate center cover is attached. As a whole, a graceful and graceful makeup effect can be obtained.

Even if the center cover (22) is integrally formed, a shaft through hole (23) for a wheel balancer is formed in the center of the center cover (22), and a hub bolt receiving hole (of the mounting seat (12) is also formed in the eccentric part (). Since the tool insertion holes (27) corresponding to 14) are opened respectively, the wheel balancer can be measured and mounted on the axle in exactly the same manner as the conventional product.

Further, even if rainwater intrudes into the bag of the mounting barrel (10) through the shaft insertion hole (23) or the tool insertion hole (27), it may be rotated by centrifugal force during use. The plurality of drain holes (29) can independently drain water, which is also effective.

Particularly, if the configuration of claim 2 is adopted,
Both front surfaces of the vane (17) and the center cover (22) form a continuous and uniform convex curved surface (a) (b), which is extremely rational as a design under limited conditions, and causes a feeling of strangeness. In addition to providing a cosmetic effect that does not appear, a smooth flow action of the molten metal during casting can also be performed, and a high-strength product with no porosity can be obtained.

Further, the rear surface of the center cover (22) is shaped into a sharp convex curved surface (c) as compared with the convex curved surface (b) of the front surface thereof, and a plurality of drainage holes (continuous) are formed on the extension plane thereof. No. 29) has openings distributed on the circumferential cylinder surface of the mounting cylinder (10), which is also extremely effective in casting, and
The above drainage action can be performed more smoothly and reliably.

[Brief description of drawings]

FIG. 1 is a front view of a wheel disk according to the present invention.

FIG. 2 is a rear view of the wheel disk.

3 is an enlarged cross-sectional view taken along line 3-3 of FIG.

FIG. 4 is an explanatory view showing a state in which a wheel disk is attached to a rotary shaft of a wheel balancer.

[Explanation of reference symbols] (10) -Mounting barrel (11) -Hub (13) -Axle receiving hole (14) -Hub bolt receiving hole (17) -Vane (18) -Rim (22) -Center cover (23)・ Shaft insertion hole (27) ・ Tool insertion hole (29) ・ Drainage hole (a) ・ Convex curved surface (b) ・ Convex curved surface (c) ・ Convex curved surface

Claims (2)

(57) [Scope of utility model registration request] 1. A mounting seat (12) for a hub (11) of an axle is provided with a groove bottom surface of a U-shaped mounting barrel (10), and an axle receiving hole (13) is provided at a central portion of the mounting seat (12). ,
Similarly, the eccentric part has a plurality of hub bolt receiving holes (14).
A wheel for an automobile in which each of the openings is formed, and a vane (17) that is fastened to the tire support rim (18) is continuously and integrally projected from the position corresponding to the opening front edge of the mounting body (10) to the outside in the radial direction. In the disk, a center cover (22) is continuously and integrally projected from the position corresponding to the opening front edge of the mounting cylinder (10) inward in the radial direction so as to cover the opening surface of the mounting cylinder (10). A shaft insertion hole (23) for a wheel balancer is formed in the center of the center cover (22), and a tool insertion hole (27) corresponding to the hub bolt receiving hole (14) is formed in the eccentric part. , A plurality of drain holes (29) for draining rainwater infiltrated into the bag covered by the center cover (22) by the centrifugal force on the circumferential surface of the mounting body (10). Coverless wheel disc for a motor vehicle, characterized in that is distributed. 2. The front surface of the center cover (22) is shaped into a convex curved surface (b) continuous with the front surface of the blade (17), while the rear surface of the center cover (22) is also convex curved surface (b). Convex surface with a radius of curvature smaller than that of (c)
The center cover (22) is gradually thinned toward its center, and the drainage holes (29) are distributed on the extension plane of the rear surface of the center cover (22). A coverless wheel disk for an automobile according to claim 1.