Transmission shaft rod for automobile

Abstract

The transmission shaft rod for the automobile comprises a shaft rod and further comprises a main body section, a connecting unit and a positioning unit which are arranged on the shaft rod, the connecting unit is connected with a connecting part, the connecting part drives the shaft rod through the connecting unit, and therefore a matching part is driven through the main body section, and transmission and conversion of force are achieved. The positioning unit abuts against the connecting part to limit the movement range of the shaft rod body. The connecting unit comprises a first connecting section and a second connecting section, one end of the first connecting section is connected with one end of the shaft rod body, the other end of the first connecting section is connected with the positioning unit, the second connecting section is symmetrically arranged in the first connecting section, and the outer diameters of the shaft rod body, the first connecting section and the second connecting section are sequentially decreased. The utility model has the advantages that the first connecting section and the second connecting section are arranged, so that double positioning of connecting parts is realized, the positioning precision is increased, and the stability after assembly is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile shaft rods, in particular to a transmission shaft rod for automobiles. Background Art

[0002] Patent document publication number CN219988911U discloses an improved bicycle barrel shaft, which has a shaft, a first end of which is provided with a limit end, and the bottom surface of the limit end is a plane structure; an annular gasket is sleeved on the outer periphery of the shaft, and the end surface of the annular gasket is a plane structure; the shaft is provided with a clamping protrusion near the limit end, and the inner wall of the annular gasket is pressed and positioned with the clamping protrusion, so that the bottom surface of the limit end is in close contact with the end surface of the annular gasket. The utility model is provided with a limit end and a clamping protrusion on the shaft, and the annular gasket is limited between the limit end and the clamping protrusion, which can effectively prevent the annular gasket from moving, and the assembly is more compact, which is convenient for users to carry and use.

[0003] However, the shaft rod has low strength and low positioning accuracy and is not suitable for automotive parts. Therefore, it is necessary to improve such a structure to overcome the above defects. Utility Model Content

[0004] The purpose of the utility model is to provide a transmission shaft rod for an automobile to solve the problems raised in the above background technology.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A transmission shaft for an automobile comprises a shaft, and further comprises a main body section, a connecting unit and a positioning unit arranged on the shaft, wherein the connecting unit is connected to a connecting component, the connecting component drives the shaft through the connecting unit, thereby driving a matching component through the main body section to realize force transmission and conversion, and the positioning unit abuts against the connecting component to limit the movement range of the shaft;

[0007] The connecting unit includes a first connecting section and a second connecting section. One end of the first connecting section is connected to one end of the main section, and the other end is connected to the positioning unit. The second connecting section is symmetrically arranged in the first connecting section. The outer diameters of the main section, the first connecting section and the second connecting section decrease successively.

[0008] The utility model is further configured such that a first inclined plane and a second inclined plane are provided at one end of the main body section, and the inclination angles of the first inclined plane and the second inclined plane are adapted to the assembly component.

[0009] The utility model is further configured such that one end of the positioning unit is provided with an arc surface, and the arc surface smoothly transitions to an outer diameter of the positioning unit.

[0010] The utility model is further configured that the arc surface of the positioning unit is provided with a wear-resistant coating.

[0011] The utility model is further configured such that one end of the main body section connected to the first connecting section is provided with a chamfer.

[0012] The utility model is further configured such that one end of the positioning unit connected to the first connecting section is provided with a chamfer.

[0013] The utility model is further configured such that one end where the first connecting section is connected to the second connecting section is provided with a chamfer.

[0014] The utility model is further configured such that the outer diameter of the connecting unit is larger than the outer diameter of the first connecting section, and the outer diameters of the first connecting section and the second connecting section are adapted to the connecting component.

[0015] The advantages of the utility model are:

[0016] 1. The utility model realizes double positioning of the connecting parts by providing the first connecting section and the second connecting section, thereby increasing the positioning accuracy and the stability after assembly.

[0017] 2. The utility model can effectively increase the strength of the arc surface of the positioning unit by providing a wear-resistant coating on the arc surface of the positioning unit, thereby increasing the service life of the shaft rod.

[0018] 3. The new type of use effectively avoids stress concentration by setting chamfers, increases the strength of the shaft, makes it more reliable, and can withstand higher impact forces.

[0019] 4. The utility model provides the main body section and the connection unit, so that the connection component can drive the assembly component through the shaft rod to achieve power transmission and conversion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a structural schematic diagram of a transmission shaft rod for an automobile.

[0021] Figure 2 This utility model Figure 1 A partial enlarged view of middle A.

[0022] Figure 3 This utility model Figure 1 A partial enlarged view of B.

[0023] Figure 4 This utility model Figure 1 A partial enlarged view of C in the middle.

[0024] Numeral reference numerals: main section 100, first inclined surface 110, second inclined surface 120, connecting unit 200, first connecting section 210, second connecting section 220, positioning unit 300, arc surface 310, chamfer 410 DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0026] like Figure 1-4 As shown, the utility model proposes a transmission shaft for automobile, including a shaft, and also including a main body section 100, a connecting unit 200 and a positioning unit 300 arranged on the shaft, the connecting unit is connected to the connecting component, the connecting component drives the shaft through the connecting unit, thereby driving the matching component through the main body section to realize force transmission and conversion, the positioning unit abuts against the connecting component to limit the movement range of the shaft; the connecting unit includes a first connecting section 210 and a second connecting section 220, one end of the first connecting section is connected to one end of the main body section, and the other end is connected to the positioning unit, the second connecting section is symmetrically arranged in the first connecting section, and the outer diameters of the main body section, the first connecting section and the second connecting section decrease successively.

[0027] In this embodiment, a first slope 110 and a second slope 120 are provided at one end of the main section. The inclination angles of the first slope and the second slope are adapted to the assembly components. The first slope and the second slope can position the assembly components twice. At the same time, the use of the slope can make the assembly of the components more convenient.

[0028] In this embodiment, a circular arc surface 310 is disposed at one end of the positioning unit, and the circular arc surface smoothly transitions to the outer diameter of the positioning unit.

[0029] In this embodiment, the arc surface of the positioning unit is provided with a wear-resistant coating, and the wear-resistant coating is made of high-chromium cast iron material. The high-chromium cast iron material has high wear resistance, high toughness and strength, and can effectively protect the shaft from wear.

[0030] In this embodiment, a chamfer 410 is provided at one end of the main body section connected to the first connecting section.

[0031] In this embodiment, a chamfer is provided at one end of the positioning unit connected to the first connecting section.

[0032] In this embodiment, one end where the first connecting section is connected to the second connecting section is provided with a chamfer.

[0033] In this embodiment, the outer diameter of the connecting unit is larger than the outer diameter of the first connecting section, and the outer diameters of the first connecting section and the second connecting section are adapted to the connecting component, and the two-stage stepped shaft and the connecting component are positioned. After one of the connecting sections is worn, the other connecting section can still play a positioning role, which greatly increases the positioning accuracy after assembly.

[0034] In the description of the present utility model, it should be noted that when terms such as "upper", "lower", "inner", "outer", "left", "right" and the like indicating orientation or positional relationship appear, it should be understood that the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, when terms such as "first" and "second" appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, terms such as "installation", "setting", and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

Claims

1. A transmission shaft for an automobile, comprising a shaft, characterized in that: It also includes a main body section, a connecting unit and a positioning unit arranged on the shaft rod, wherein the connecting unit is connected to the connecting component, the connecting component drives the shaft rod through the connecting unit, thereby driving the matching component through the main body section to achieve force transmission and conversion, and the positioning unit abuts against the connecting component to limit the movement range of the shaft rod; The connecting unit includes a first connecting section and a second connecting section. One end of the first connecting section is connected to one end of the main section, and the other end is connected to the positioning unit. The second connecting section is symmetrically arranged in the first connecting section. The outer diameters of the main section, the first connecting section and the second connecting section decrease successively.

2. The transmission shaft rod for automobile according to claim 1, characterized in that: One end of the main body section is provided with a first inclined surface and a second inclined surface, and the inclination angles of the first inclined surface and the second inclined surface are adapted to the assembly component.

3. The transmission shaft rod for automobile according to claim 1, characterized in that: One end of the positioning unit is provided with an arc surface, and the arc surface smoothly transitions to the outer diameter of the positioning unit.

4. The transmission shaft rod for automobile according to claim 3, characterized in that: The arc surface of the positioning unit is provided with a wear-resistant coating.

5. The transmission shaft rod for automobile according to claim 1, characterized in that: One end of the main body section connected to the first connecting section is provided with a chamfer.

6. The transmission shaft for automobile according to claim 1, characterized in that: One end of the positioning unit connected to the first connecting section is provided with a chamfer.

7. The transmission shaft for automobile according to claim 1, characterized in that: One end where the first connecting section is connected to the second connecting section is provided with a chamfer.

8. The transmission shaft rod for automobile according to claim 1, characterized in that: The outer diameter of the connecting unit is larger than the outer diameter of the first connecting section, and the outer diameters of the first connecting section and the second connecting section are adapted to the connecting component.

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