Portable transmission shaft assembly

Abstract

The utility model discloses a portable transmission shaft assembly. The problem that a retainer ring of an existing transmission shaft assembly is arranged in a ball cage, and accidental damage to the ball cage and peripheral components is possibly caused due to the fact that a rough mode needs to be adopted in the dismounting process is mainly solved. The shaft hole is formed in the circumferential direction of the intermediate shaft; the blocking piece is installed on the axial end face, stretching into the shell, of the middle shaft and can stretch out and draw back in the radial direction of the middle shaft. The check ring is installed on the circumferential outer wall of the blocking piece and used for preventing the intermediate shaft from being disengaged when the blocking piece is opened; the lifting pin is arranged in the shaft hole and is used for enabling the separation blade to be in an open state; the unlocking piece is arranged on the portion, exposed out of the shell, of the middle shaft and detachably connected with the lifting pin, and when the unlocking piece and the lifting pin are installed together, the lifting pin keeps the blocking piece in an open state. According to the portable transmission shaft assembly, the maintenance time can be remarkably shortened through the quick-release structure, quick replacement of parts is achieved through optimization design and precise technology, complexity and risks in traditional disassembly are avoided, the economic burden of a vehicle owner is relieved, and the maintenance service becomes more efficient, convenient and reliable.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts, and particularly relates to a portable drive shaft assembly. Background Art

[0002] With the continuous growth of the automobile ownership, the efficiency and quality of maintenance services have become the focus of attention of the majority of car owners. For the common problem of damage to the outer constant velocity joint parts, traditional disassembly methods are often accompanied by high risks and high costs. In the traditional method, since the snap ring is inside the constant velocity joint, the disassembly process often requires relatively rough methods, such as manual knocking. However, this not only has low efficiency, but also may cause accidental damage to the constant velocity joint and surrounding components, resulting in unnecessary economic losses. Content of the Utility Model

[0003] In order to overcome the deficiencies of the background art, the utility model provides a portable drive shaft assembly, which mainly solves the problem that the snap ring of the current drive shaft assembly is inside the constant velocity joint, and the disassembly process often requires relatively rough methods, which may cause accidental damage to the constant velocity joint and surrounding components.

[0004] The technical solution of the utility model is as follows.

[0005] A portable drive shaft assembly includes an intermediate shaft. One end of the intermediate shaft is connected with a first universal joint, and the other end is connected with a second universal joint. The first universal joint includes a housing. Part of the intermediate shaft extends into the housing and is connected with a spider. It also includes

[0006] A shaft hole, arranged along the intermediate shaft;

[0007] A retaining piece, installed on the axial end face of the intermediate shaft extending into the housing, and is axially telescopic along the intermediate shaft;

[0008] A snap ring, installed on the outer circumferential wall of the retaining piece, and is used to prevent the intermediate shaft from coming out when the retaining piece is expanded;

[0009] A top pin, arranged in the shaft hole, and is used to keep the retaining piece in an expanded state;

[0010] An unlocking piece, arranged on the part of the intermediate shaft exposed outside the housing, is detachably connected with the top pin, and when it is installed together with the top pin, the top pin keeps the retaining piece in an expanded state.

[0011] An opening groove for installing the snap ring is arranged on the outer circumferential wall of the retaining piece.

[0012] A long groove is arranged on the retaining piece, and the long groove is connected with the intermediate shaft through a fastener.

[0013] A plurality of retaining pieces are provided.

[0014] The front end of the top pin is in a frustum shape, and its circumferential outer wall contacts one side outer wall of the retaining piece.

[0015] An elastic member is provided in the shaft hole, and the elastic member is used to apply a force to make the top pin leave the retaining piece.

[0016] The elastic member is a spring.

[0017] A through groove is provided on the intermediate shaft, and a positioning groove is provided on the top pin. Part of the unlocking member passes through the through groove and is in snap-fit with the positioning groove.

[0018] The beneficial effects of the present utility model are as follows: The present utility model provides a portable drive shaft assembly. Through the quick-release structure, the maintenance time can be significantly shortened. Through optimized design and precise process, the rapid replacement of parts is realized, avoiding the cumbersome and risky traditional disassembly, reducing the economic burden of the vehicle owner, and making the maintenance service more efficient, convenient and reliable. Description of the Drawings

[0019] Figure 1 It is a cross-sectional schematic diagram of an embodiment of the present utility model.

[0020] Figure 2 It is a partial cross-sectional schematic diagram of an embodiment of the present utility model.

[0021] Figure 3 It is a structural schematic diagram of the retaining piece of an embodiment of the present utility model.

[0022] Figure 4 It is a partial cross-sectional schematic diagram of the retaining piece of an embodiment of the present utility model.

[0023] Figure 5 It is a partial cross-sectional schematic diagram of the top pin of the retaining piece of an embodiment of the present utility model. Detailed Embodiment

[0024] The utility model is further described below in conjunction with the accompanying drawings: as shown in the figure, 1. A portable transmission shaft assembly includes an intermediate shaft 1, one end of the intermediate shaft is connected to a first universal joint 2, and the other end is connected to a second universal joint 3, the first universal joint includes a housing 21, a portion of the intermediate shaft extends into the housing and is connected to a star sleeve 22, and also includes an axial hole 11, which is arranged along the intermediate axis; a baffle 12, which is installed on the axial end surface of the intermediate shaft extending into the housing, and is retractable along the radial direction of the intermediate shaft; a retaining ring 13, which is installed on the circumferential outer wall of the baffle, and is used to prevent the intermediate shaft from falling out when the baffle is stretched; a push pin 14, which is arranged in the axial hole, and is used to keep the baffle in a stretched state; an unlocking member 15, which is arranged at the portion of the intermediate shaft exposed outside the housing, is detachably connected to the push pin, and when installed together with the push pin, the push pin keeps the baffle in a stretched state. When in use, the ejector pin is fixed by the unlocking piece, and the front end of the ejector pin will push open the baffle, and when the baffle is expanded, the baffle ring will be driven to expand. The baffle ring is a conventional baffle ring, which is elastic. When it needs to be removed, the unlocking piece is pulled out. Since the unlocking piece is arranged outside the housing of the universal joint, it is convenient for disassembly. After removal, the ejector pin is no longer fixed, the baffle can be retracted, and the baffle ring will also be retracted. At this time, the intermediate shaft can be taken out. The retaining frame and rolling element in the housing are existing technologies and will not be described in detail.

[0025] In this embodiment, as shown in the figure, the peripheral outer wall of the blocking piece is provided with an opening groove 121 for installing the blocking ring. The blocking ring partially falls into the opening groove and partially extends out of the opening groove to play a blocking role.

[0026] In this embodiment, as shown in the figure, the baffle is provided with a long slot 122, and the long slot is connected to the intermediate shaft through a fastener. The fastener can be a screw, and it does not need to be very tight after installation, and the baffle can still move along the long slot under the push of the ejector pin.

[0027] In this embodiment, as shown in the figure, the blocking pieces are provided in plurality and are gathered by the same blocking ring.

[0028] In this embodiment, as shown in the figure, the front end of the ejector pin is a frustum-shaped structure, and its circumferential outer wall contacts one side outer wall of the baffle. When the ejector pin moves forward, its contact point with the baffle gradually becomes higher, thereby driving the baffle to open.

[0029] In this embodiment, as shown in the figure, an elastic member 16 is provided in the shaft hole, and the elastic member is used to apply force to make the ejector pin leave the blocking piece. When the unlocking member is removed, the ejector pin will leave the blocking piece under the action of the elastic member, so that the retaining ring can be closed.

[0030] In this embodiment, as shown in the figure, the elastic member is a spring.

[0031] In this embodiment, as shown in the figure, a through groove 10 is provided on the intermediate shaft, and a positioning groove 141 is provided on the top pin. Part of the unlocking member passes through the through groove and is in snap fit with the positioning groove. The unlocking member passes through the through groove and cooperates with the positioning groove, which is convenient for disassembly and assembly.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0034] The embodiments described with reference to the accompanying drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation on the present utility model. The embodiments should not be regarded as a limitation on the present utility model, but any improvement made based on the spirit of the present utility model should be within the protection scope of the present utility model.

Claims

1. A portable drive shaft assembly, including an intermediate shaft (1), one end of the intermediate shaft is connected with a first universal joint (2), and the other end is connected with a second universal joint (3). The first universal joint includes a housing (21), and part of the intermediate shaft extends into the housing and is connected with a spider (22). It is characterized in that: It further includes a shaft hole (11) axially arranged along the middle shaft; a retaining piece (12) mounted on the axial end face of the middle shaft extending into the housing, and being axially telescopic along the radial direction of the middle shaft; a retaining ring (13) mounted on the outer circumferential wall of the retaining piece and used to prevent the middle shaft from coming out when the retaining piece is expanded; a top pin (14) disposed in the shaft hole and used to keep the retaining piece in an expanded state; an unlocking member (15) disposed on the part of the middle shaft exposed outside the housing, detachably connected to the top pin, and when being mounted together with the top pin, the top pin keeps the retaining piece in an expanded state.

2. The portable transmission shaft assembly according to claim 1, wherein: An opening groove (121) for mounting the retaining ring is provided on the outer circumferential wall of the retaining piece.

3. The portable drive shaft assembly according to claim 2, wherein: A long groove (122) is provided on the retaining piece, and the long groove is connected to the middle shaft through a fastener.

4. A portable drive shaft assembly according to claim 1, characterized in that: A plurality of the retaining pieces are provided.

5. A portable drive shaft assembly according to claim 1, characterized in that: The front end of the top pin is of a frustum-shaped structure, and its outer circumferential wall contacts with one side outer wall of the retaining piece.

6. The portable transmission shaft assembly according to claim 1, wherein: An elastic member (16) is disposed in the shaft hole, and the elastic member is used to apply a force to make the top pin leave the retaining piece.

7. A portable drive shaft assembly according to claim 6, characterized in that: The elastic member is a spring.

8. A portable drive shaft assembly according to claim 1, characterized in that: A through groove (10) is provided on the middle shaft, a positioning groove (141) is provided on the top pin, and a part of the unlocking member passes through the through groove and is in snap fit with the positioning groove.

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