Automobile hub screw

Abstract

The automobile hub screw is characterized by comprising a head end, a middle end and a tail end which are connected in sequence, the head end is provided with a conical surface matched with a hub; a plurality of petal-shaped sections which are uniformly distributed are arranged on the outer surface of the middle end, and the plane shape of each petal-shaped section is elliptical; the surface of the tail end is provided with a square cutting strip and a hemispherical groove, and the tail end of the tail end is provided with a conical groove; the screw column body is arranged to be the oval body, so that stress can be balanced, the risk of fatigue cracks and even breakage caused by long service life of the automobile screw is reduced, the structural strength of the bolt is enhanced, and the service life is prolonged; when the cambered side surface is matched with the socket spanner, the contact is smoother, and the spanner sleeves and takes down the bolt more easily; the holding comfort degree is greatly improved through the arc-shaped structure; and the effect of reducing the weight can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically an automotive wheel hub bolt. Background Technology

[0002] Most commonly available automotive wheel bolts on the market have a simple hexagonal prism shape in the middle, lacking design considerations for balanced force distribution and ease of operation. During vehicle operation, the traditional hexagonal structure cannot effectively distribute the complex and variable stresses on the wheel bolts, making them prone to fatigue cracks or even breakage due to uneven stress, significantly impacting their service life.

[0003] Meanwhile, during installation and disassembly, the traditional wheel hub bolts, when used with socket wrenches, present significant obstacles due to their less-than-smooth surface shape. This is especially true when the wheel hub installation space is narrow, making it difficult to put on and take off the wrench, resulting in low installation and disassembly efficiency and wasting a lot of time and effort.

[0004] Furthermore, existing wheel bolts lack lightweight design and fail to achieve effective weight reduction through reasonable structural design, thus increasing the vehicle's unnecessary load. Therefore, a completely new design for automotive wheel bolts is needed to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an automotive wheel hub bolt that can effectively solve the problems mentioned in the background art.

[0006] To solve the above problems, the technical solution adopted by this utility model is: a car wheel hub bolt, characterized in that it includes a head end, a middle end and a tail end connected in sequence; the head end is provided with a conical surface adapted to the wheel hub; the outer surface of the middle end is provided with a plurality of evenly distributed petal-shaped cut surfaces, the planar shape of the petal-shaped cut surfaces being elliptical; the surface of the tail end is provided with a square cut strip and a hemispherical groove, and the end of the tail end is provided with a conical groove that mates with the wheel hub, which can reduce the overall weight and the groove angle can improve the support force.

[0007] As a further preferred embodiment of this utility model, the number of petal-shaped cut surfaces in the middle is one, and the top of the curved surface of each petal-shaped cut surface forms a continuously transitioning arc-shaped ridge.

[0008] As a further preferred embodiment of this utility model, the tail end and the middle end are detachable connection structures, and the bottom of the tail end is provided with a threaded connection part that matches the top of the middle end.

[0009] As a further preferred embodiment of this utility model, the head end and the middle end are designed as a single piece, and the end of the head end is also provided with an internal thread.

[0010] Compared with the prior art, the present invention provides an automotive wheel hub bolt with the following advantages:

[0011] Designing the screw cylinder as an ellipse allows for balanced force distribution, reducing the risk of fatigue cracks or even breakage of automotive screws over long service lives, enhancing the structural strength of the bolt, and extending its service life; it facilitates disassembly and assembly, with the curved sides providing smoother contact when used with a socket wrench, making it easier to put on and take off the bolt; the curved structure greatly improves grip comfort; and it also helps to reduce weight. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a structural disassembly diagram of the present utility model;

[0014] Figure 3 This is a schematic diagram of the structure of this utility model;

[0015] Figure 4 This is a schematic cross-sectional view of the structure of this utility model;

[0016] Among them: 1. Head end; 2. Petal-shaped cut surface; 3. Middle end; 4. Tail end; 5. Conical groove; 6. Square cut strip; 7. Hemispherical groove; 8. Threaded connection part; 9. Internal thread. Detailed Implementation

[0017] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0018] Furthermore, the embodiments are based on what those skilled in the art can implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0019] Reference Figure 1-4This utility model provides an automotive wheel hub bolt, comprising a head end 1, a middle end 3, and a tail end 4 connected in sequence; the outer surface of the middle end 3 is provided with a plurality of evenly distributed petal-shaped cut surfaces 2, the planar shape of the petal-shaped cut surfaces 2 being elliptical; the outer surface of the middle end 3 is provided with a plurality of evenly distributed petal-shaped cut surfaces 2; the surface of the tail end 4 is provided with a square cut strip 6 and a hemispherical groove 7; the end of the tail end 4 is provided with a conical groove 5, which can reduce the overall weight, and the groove angle can improve the support force; the head end 1 and the middle end 3 are integrated into one piece, and the end of the head end 1 is also provided with an internal thread 9.

[0020] As a further preferred embodiment of this utility model, the number of petal-shaped cut surfaces 2 of the middle end 3 is 6, and the top of the curved surface of each petal-shaped cut surface 2 forms a continuously transitioning arc-shaped ridge, making the connection smoother.

[0021] As a further preferred embodiment of this utility model, the tail end 4 and the middle end 3 are detachable connection structures, and the bottom of the tail end 4 is provided with a threaded connection part 8 that matches the top of the middle end 3.

[0022] As a further preferred embodiment of this utility model, the inclination angle of the tapered groove 5 matches the taper of the hub mounting hole.

[0023] As a specific embodiment of this utility model: The head end 1 of the automobile wheel hub screw of this utility model is used to connect and fix the automobile wheel hub, which is achieved by the rotational connection of its internal thread 9. The head end 1 is provided with a tapered surface adapted to the wheel hub.

[0024] The middle section 3 has 6 petal-shaped cut surfaces 2 for use with the sleeve during disassembly and assembly. The middle section 3 has an innovative elliptical structure with a cylindrical shape. The curved surface of the column is cut into the shape of a petal at the highest point, and then the curved surface of the column gradually shrinks to facilitate the installation and removal of the sleeve.

[0025] The tail end 4 is a hand-tightening end, and its structure follows the curvature of the middle end 3 to form a smooth cone-shaped surface. The tail end 4 and the middle end 3 adopt a separate structure and are connected by screw thread. The tail end 4 can be hand-tightened to connect to the middle end 3. The tail end 4 has added square cut strips 6 and hemispherical grooves 7 to facilitate hand-tightening of the tail end 4 and increase friction.

[0026] As needed, the above-mentioned installation, setting, or connection methods include, but are not limited to, screws, riveting, welding or sleeve, fixing, etc. The installation, setting, or connection method shall be selected according to the working scenario.

[0027] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An automotive wheel stud, characterized by, It comprises a head end (1), a middle end (3) and a tail end (4) connected in sequence; the head end (1) is provided with a conical surface adapted to a hub; the outer surface of the middle end (3) is provided with a plurality of petal-shaped cut surfaces (2) uniformly distributed, the planar shape of the petal-shaped cut surfaces (2) is oval; the surface of the tail end (4) is provided with a square cut strip (6) and a semispherical groove (7), the tail end (4) is provided with a conical groove (5) at the end; the head end (1) and the middle end (3) are designed in one piece, and the end of the head end (1) is further provided with an internal thread (9).

2. The automotive wheel stud of claim 1, wherein, The number of the petal-shaped cut surfaces (2) of the middle end (3) is six, and the curved top end of each petal-shaped cut surface (2) forms a continuously transitional arc-shaped edge line.

3. The automotive wheel stud of claim 1, wherein, The tail end (4) and the middle end (3) are connected in a detachable manner, and the bottom of the tail end (4) is provided with a threaded connection part (8) matched with the top end of the middle end (3).

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