阅读说明：本技术 一种轮圈与轮辐的连接件、轮毂及轮圈与轮辐的连接方法 (Connecting piece of rim and spoke, hub and connecting method of rim and spoke ) 是由 包永贵 罗梓尹 于 2020-08-29 设计创作，主要内容包括：本发明涉及一种轮圈与轮辐的连接件、轮毂及轮圈与轮辐的连接方法。该连接件包括设置在外端的轮圈结合部和与轮圈结合部连接的并向内延伸的轮辐结合部；该轮圈结合部和/或轮辐结合部和/或轮辐结合部与轮圈结合部的衔接部位具有用于防止连接件压铸偏移的定位部。该轮毂包括轮圈和轮辐；该轮圈与如上所述的连接件的轮圈结合部焊接,该轮辐与所述的连接件连接并包覆所述的连接件。本发明解决了现有轮毂的轮圈和轮辐通过连接件结合时,且轮辐是压铸制造时,连接件容易产生位置偏移的问题,它不但可以提高轮圈与轮辐的连接质量,而且不影响轮辐连接部位的外观和连接强度。同时,也提高了生产效率。(The invention relates to a connecting piece of a rim and a spoke, a hub and a connecting method of the rim and the spoke. The connecting piece comprises a rim combining part arranged at the outer end and a spoke combining part which is connected with the rim combining part and extends inwards; the connecting part of the rim combining part and/or the spoke combining part and the rim combining part is provided with a positioning part for preventing the die casting offset of the connecting piece. The hub comprises a rim and a spoke; the rim is welded with the rim combination part of the connecting piece, and the spoke is connected with the connecting piece and covers the connecting piece. The invention solves the problem that the connecting piece is easy to generate position deviation when the rim and the spoke of the existing hub are combined through the connecting piece and the spoke is manufactured by die casting, and not only can improve the connection quality of the rim and the spoke, but also does not influence the appearance and the connection strength of the connecting part of the spoke. Meanwhile, the production efficiency is also improved.)

1. A rim and spoke connecting piece comprises a rim combining part (31) arranged at the outer end and a spoke combining part (32) which is connected with the rim combining part (31) and extends inwards; the method is characterized in that: the rim combining part (31) and/or the spoke combining part (32) and/or the joint part (33) of the spoke combining part (32) and the rim combining part (31) are provided with positioning parts (34) for preventing die casting offset of the connecting piece.

2. A rim to spoke connection according to claim 1, wherein: the positioning part (34) is welded on the rim combining part (31) or the spoke combining part (32) or the connecting part (33) of the spoke combining part (32) and the rim combining part (31).

3. A rim to spoke connection according to claim 1, wherein: the positioning part (34) is formed by folding one side or two sides of the spoke combination part (32).

4. A rim to spoke connection according to claim 1, wherein: the spoke joint part (32) is provided with a hole (35).

5. A rim to spoke connection according to claim 4, wherein: a cylindrical positioning part (34) extends around the hole (35).

6. A rim to spoke connection according to claim 1, wherein: the top of the positioning part (34) is in an outward convex arc shape or an inward concave arc shape.

7. A hub comprises a rim (1) and spokes (2); the method is characterized in that: the rim (1) is welded to the rim joint (31) of the connecting element according to claim 1 or 2 or 3 or 4 or 5 or 6, the spoke (2) being connected to and covering the connecting element.

8. The hub of claim 7, wherein: the hub is a disc brake hub or a drum brake hub.

9. A connecting method of a rim and a spoke is characterized in that the spoke and a connecting piece are connected and combined in a die-casting mode, and the connecting method comprises the following steps:

a, before die casting, placing the connecting piece according to claim 1 or 2 or 3 or 4 or 5 or 6 on a die;

b, injecting the base material after die casting and die assembly, wherein the positioning part (34) of the connecting piece is propped against the other side die, so that the connecting piece cannot move in the die casting process, and the base material completely covers the connecting piece after die casting.

10. A method of connecting a rim to a spoke according to claim 9, wherein: after demolding, the spoke (2) and the rim (1) are coated by paint.

Technical Field

The invention relates to the technical field of a hub structure and a manufacturing process thereof, in particular to a connecting piece of a rim and a spoke, a hub and a connecting method of the rim and the spoke.

Background

Please refer to fig. 1, which is a schematic structural diagram of a conventional hub of an electric vehicle or motorcycle. As shown in the figure: the wheel comprises a rim 1 (usually an iron ring) and spokes 2 (usually made of aluminum or engineering plastic), wherein the rim 1 and the spokes 2 are connected through connecting pieces 3. The outer end of the connecting member 3 is usually made of ferrous material, the outer end of the connecting member is welded with the rim 1, the connecting member 3 is further provided with a spoke joint part extending inwards, the spoke joint part is provided with a hole, and when the spoke 2 is formed by die casting, a base material (aluminum or plastic) penetrates through the hole and covers the spoke joint part of the connecting member 3 so as to realize firm connection between the rim 1 and the spoke 2.

However, the above structure has the following problems in the actual die-cast connection process:

1. offset of installation position of connecting piece

When the connecting piece is connected in a die casting mode, the connecting piece is usually placed at the corresponding position on a die firstly, but after a base material is injected, the connecting piece can move, as shown in fig. 1, the connecting piece usually deflects upwards, so that the deviation of a connecting part is caused, particularly the connecting part of the outer end of the connecting piece and a rim is dislocated, and the product quality is influenced.

2. In order to overcome the problem of the above 1, there is a problem that a manufacturer extends a positioning column downward from an upper mold to hold a connecting member downward, and although the problem of the offset of the mounting position of the connecting member is overcome to some extent, a hole 21 (see fig. 2) is inevitably formed at the outer end of the die-cast spoke, and the hole 21 not only affects the appearance, but also reduces the strength of the product. And because the working procedure of pressing the connecting sheet is added, the production efficiency is extremely low.

Disclosure of Invention

The invention aims to provide a connecting piece of a rim and a spoke, a hub and a connecting method of the rim and the spoke, which solve the problem that when the rim and the spoke of the conventional hub are combined through the connecting piece and the spoke is manufactured by die casting, the connecting piece is easy to generate position deviation, can improve the connecting quality of the rim and the spoke, and does not influence the appearance and the connecting strength of the connecting part of the spoke. Meanwhile, the production efficiency is also improved.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a connecting piece of a rim and a spoke comprises a rim combining part arranged at the outer end and a spoke combining part which is connected with the rim combining part and extends inwards; the method is characterized in that: the connecting part of the rim combining part and/or the spoke combining part and the rim combining part is provided with a positioning part for preventing the die casting offset of the connecting piece.

The connecting piece of rim and spoke, its characterized in that: the positioning part is welded on the connecting part of the rim combining part or the spoke combining part and the rim combining part.

The connecting piece of rim and spoke, its characterized in that: the positioning part is formed by folding one side or two sides of the spoke combination part.

The connecting piece of rim and spoke, its characterized in that: the spoke joint part is provided with a hole.

The connecting piece of rim and spoke, its characterized in that: a cylindrical positioning portion extends around the hole.

The connecting piece of rim and spoke, its characterized in that: the top of the positioning part is in an outward convex arc shape or an inward concave arc shape.

A hub comprising a rim and spokes; the method is characterized in that: the rim is welded with the rim combination part of the connecting piece, and the spoke is connected with the connecting piece and covers the connecting piece.

The wheel hub, its characterized in that: the hub is a disc brake hub or a drum brake hub.

A connecting method of a rim and a spoke is characterized in that the spoke and a connecting piece are connected and combined in a die-casting mode, and the connecting method comprises the following steps:

before die casting, placing the connecting piece on a die;

and B, injecting the base material after die casting and die assembly, wherein the positioning part of the connecting piece is propped against the die on the other side, so that the connecting piece cannot move in the die casting process, and the base material completely covers the connecting piece after die casting.

The connecting method of the rim and the spoke is characterized in that: and after demolding, painting the spoke and the rim part with paint.

The invention has the advantages that:

the invention designs a connecting piece of a rim and a spoke, which is provided with a positioning part for preventing the die-casting offset of the connecting piece. And the base material (aluminum or engineering plastic) is injected after die casting and die assembly, and the positioning part of the connecting piece props against the die on the other side, so that the connecting piece cannot move in the die casting process, and the base material completely covers the connecting piece after die casting. Compared with the existing method for avoiding the deviation of the connecting piece, the method has the advantages that the process of jacking the connecting piece is additionally added, so that the production efficiency is greatly improved.

In addition, in order to ensure the aesthetic appearance of the product, the spoke and rim portions are painted with paint after demolding, so that even the extremely small exposed portions of the tips of the positioning portions 34, which may be caused, are completely covered.

Drawings

Fig. 1 is a schematic structural view of a conventional hub.

Fig. 2 is a schematic structural view of a conventional hub in which holes are formed due to fixation of connecting members.

FIG. 3 is a schematic view of the structure of the rim and spoke attachment of the present invention.

Fig. 4 is a schematic structural view of the hub of the present invention.

Fig. 5 is an external view of the hub of the present invention.

FIG. 6 is a schematic structural view of another embodiment of the rim and spoke attachment of the present invention.

FIG. 7 is a schematic structural view of yet another embodiment of the rim and spoke attachment of the present invention.

FIG. 8 is a schematic structural view of another embodiment of the rim and spoke attachment of the present invention.

FIG. 9 is a schematic structural view of another embodiment of the rim and spoke attachment of the present invention.

Detailed Description

Please refer to fig. 3, which is a schematic structural diagram of a connecting member for a rim and a spoke according to embodiment 1 of the present invention. As shown in the figure: the connecting piece is made of metal (such as iron) and comprises a rim combining part 31 arranged at the outer end and a spoke combining part 32 which is connected with the rim combining part 31 and extends inwards; the spoke joint part 32 is provided with a positioning part 34 for preventing die casting offset of the connecting piece, and the top of the positioning part 34 is concave arc-shaped. The spoke attachment portion 32 has an aperture 35 therein. In this embodiment, the positioning portion 34 is formed by folding one side or both sides of the spoke joint portion 32.

Please refer to fig. 4, which is a schematic view of a hub structure using the connecting member of the present embodiment 1. As shown in the figure: it comprises a rim 1 and a spoke 2; the rim 1 is welded to the rim joint 31 of the connecting member as described above, and the spoke 2 is connected to and covers the connecting member. The hub is a disc brake hub or a drum brake hub.

The connecting method of the rim and the spoke comprises the following steps: the premise is that: the spoke is connected with the connecting piece through the die-casting mode and is combined:

before die casting, placing the connecting piece on a die;

b, injecting a base material (aluminum or engineering plastic) after die casting and die assembly, wherein the positioning part 34 of the connecting piece is propped against the die on the other side, so that the connecting piece cannot move in the die casting process, and the base material completely covers the connecting piece after die casting.

In order to ensure the beautiful appearance, after demoulding, the parts of the spoke 2 and the rim 1 are coated by paint, so that even the extremely small exposed part which is possibly caused by the top end of the positioning part 34 is completely covered, the product is beautiful, and the defect that the through hole is formed at the outer end of the spoke is avoided (as shown in figure 5).

To ensure that the less the exposed portion, the better, the top of the positioning portion is convex or concave curved or pointed.

In addition, the invention can also have such an implementation structure;

1. the positioning portions 34 are welded to the spoke joint portions 32 or the joint portions 33 of the spoke joint portions 32 and the rim joint portion 31.

2. The positioning portion 34 is formed by folding one side or both sides of the spoke joint portion 32.

3. A cylindrical positioning portion 34 extends around the hole 35.

Refer to fig. 6, which is a schematic structural diagram of another rim and spoke connecting member according to the present invention. As shown in the figure: two positioning parts are arranged on the rim combining part and the spoke combining part.

Refer to fig. 7, which is a schematic structural diagram of a rim and spoke connecting member according to another embodiment of the present invention. As shown in the figure: two positioning parts are arranged on the wheel rim combining part.

Refer to fig. 8, which is a schematic structural diagram of another rim and spoke connecting member according to the present invention. As shown in the figure: and the rim combining part and the spoke combining part are respectively provided with a positioning part.

Refer to fig. 9, which is a schematic structural diagram of another rim and spoke connecting member according to the present invention. As shown in the figure: a positioning part is arranged on the wheel rim combining part.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. That is, all equivalent changes and modifications made according to the content of the claims of the present invention should be within the technical scope of the present invention.