Combined wheel

This application claims priority to Chinese Patent Application No. 201711401666.8, entitled COMBINED WHEEL and filed on Dec. 22, 2017, which is incorporated herein by reference in its entirety and for all purposes.

The present invention relates to a wheel, specifically to a combined wheel.

At present, the automotive industry is advancing towards green development, and it also puts forward a higher requirement for the wheels as important moving parts. In order to achieve the purpose of weight reduction, rims and spokes need to be made of different materials. The rims and spokes made of different materials are often connected by bolting. The wheels may be subjected to radial, axial and shear forces during running. By designing ingenious connecting structures, the quantity of screws used can be effectively reduced. In addition, the hub motor used in an electric vehicle requires a large enough space for a wheel backcavity. The conventional structure of a brake disc severely restricts the design for the structure of hub motor. Therefore, a new brake form is the premise of sufficiently designing the hub motor.

The aim of the present invention is to provide a combined wheel, wherein the radial force and the axial force generated in the running process of the wheel can be counteracted on spokes, and the shear force generated during running can be prevented from being transmitted to connecting screws for the rim and the spokes, thereby reducing both the quantity of screws employed and the size of the screws; in addition, the brake disc brakes from the inside, thereby effectively increasing the brake radius and reducing the clamping force required when braking.

In order to fulfill the above aim, the technical solution of the present invention is: a combined wheel, comprising spokes, steel bushings, screws I, a rim, a metal frame, screws II, a brake disc, pins and the like, wherein the steel bushings are installed in T-shaped grooves at the outermost parts of the spokes; a plurality of connecting blocks are uniformly distributed in the circumferential direction of the rim and are integrated with the rim, with the arc length formed by an empty slot between every two adjacent connecting blocks being greater than that of the connecting block itself; clamping grooves in the spokes are matched with the connecting blocks respectively; the pins are matched with the spokes and the connecting blocks; the left end face of the metal frame is matched with the back of the spokes; the screws I connect the metal frame, the connecting blocks and the spokes together and are matched with the steel bushings; and the brake disc is matched with the right end face of the metal frame and is connected to the metal frame by the screws II.

During operation, the steel bushings are first installed in the T-shaped grooves at the outermost parts of the spokes; the spokes are placed in the empty slots between the adjacent connecting blocks, and then are rotated so that the clamping grooves thereon are matched with the connecting blocks respectively; the pins are installed into holes of the spokes and the connecting blocks from the back of the spokes; the left end face of the metal frame is matched with the backs of the spokes; the screws I connect the metal frame, the connecting blocks and the spokes together and are matched with the steel bushing; and the brake disc is matched with the right end face of the metal frame and is connected to the metal frame by the screws II.

In use of the combined wheel of the present invention, the radial force and the axial force generated in the running process of the wheel can be counteracted on spokes, and the shear force generated during running can be prevented from being transmitted to connecting screws for the rim and the spokes, thereby reducing both the quantity of screws employed and the size of the screws. In addition, the brake disc brakes from the inside, thereby effectively increasing the brake radius and reducing the clamping force required when braking. Meanwhile, the combined wheel has the characteristics of high structural strength, light weight, large space in rim back-cavity and the like.

FIG. 1 is a side elevational view of a combined wheel of the present invention; and

FIG. 2 is a front plan view of a rim of the combined wheel of the present invention.

In the drawings, 1 —spoke, 2 —steel bushing, 3 —screw I, 4 —rim, 5 —metal frame, 6 —screw II, 7 —brake disc, 8 —pin, 11 —clamping groove, 12 —T-shaped groove, 41 —connecting block, 45 —empty slot.

The details and working conditions of the specific device according to the present invention will be described below in combination with the drawings.

As shown in FIGS. 1-3 , the device comprises spokes 1 , steel bushings 2 , screws I 3 , a rim 4 , a metal frame 5 , screws II 6 , a brake disc 7 , pins 8 and the like, wherein the steel bushings 2 are installed in T-shaped grooves 12 at the outermost parts of the spokes 1 ; a plurality of connecting blocks 41 are uniformly distributed in the circumferential direction of the rim 4 and are integrated with the rim 4 ; the arc length formed by an empty slot 45 between every two adjacent connecting blocks 41 is greater than that of the connecting block 41 itself; clamping grooves 11 in the spokes 1 are matched with the connecting blocks 41 ; the pins 8 are matched with the spokes 1 and the connecting blocks 41 ; the left end face of the metal frame 5 is matched with the backs of the spokes 1 ; the screws I 3 connect the metal frame 5 , the connecting blocks 41 and the spokes 1 together and are matched with the steel bushings 2 ; and the brake disc 7 is matched with the right end face of the metal frame 5 and is connected to the metal frame 5 by the screws II 6 .

During operation, the steel bushings 2 are first installed in the T-shaped grooves 12 at the outermost parts of the spokes 1 ; the spokes 1 are placed in the empty slots 45 between the adjacent connecting blocks 41 , and then are rotated so that the clamping grooves 11 thereon are matched with the connecting blocks 41 respectively; the pins 8 are installed into holes of the spokes 1 and the connecting blocks 41 from the back of the spokes 1 ; the left end face of the metal frame 5 is matched with the backs of the spokes 1 ; the screws I 3 connect the metal frame 5 , the connecting blocks 41 and the spokes 1 together and are fitted into the steel bushings 2 ; and the brake disc 7 is matched with the right end face of the metal frame 5 and is connected to the metal frame 5 by the screws II 6 .