A rear axle oil seal installation aid

The oil seal installation is automated by using a servo motor-driven rotary table and linkage system, which solves the problem of uneven torque caused by manual operation in existing tools. This enables fast and accurate installation of rear axle oil seals, improving maintenance efficiency and adaptability.

CN224674820UActive Publication Date: 2026-08-25QUANZHOU HENGJIN MASCH CO LTD
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Patent Information

Application Number
CN202521829337.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-27
Publication Date
2026-08-25
Estimated Expiration
2035-08-27

AI Technical Summary

Technical Problem

The existing auxiliary tools for installing rear axle oil seals are inefficient due to uneven manual tightening by operators, which affects the efficiency of repairing and replacing automotive rear axle oil seals.

Method used

The rotating disk and linkage system driven by a servo motor automatically tightens the oil seal during installation through toothed meshing. Combined with a detachable installation sleeve, it can accommodate oil seals of different sizes, improving installation efficiency and adaptability.

Benefits of technology

It enables rapid and accurate installation of oil seals, improves maintenance efficiency, avoids uneven torque caused by manual operation, and enhances adaptability and work efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a rear axle oil seal installation auxiliary tool relates to automobile parts assembly technical field, including rear axle connecting axle, adjusting sleeve and connecting rod, be equipped with installation groove and threaded hole two on rear axle connecting axle, install the oil seal body in installation groove, adjusting sleeve's one side is installed with mounting plate, the one side of mounting plate is installed with installation sleeve, installation sleeve's one side is pasted with the surface of oil seal body, install the threaded rod in adjusting sleeve, the one end of threaded rod is with threaded hole two screw thread and is combined connection, the one side of threaded rod is rotatably installed with the rotary disc, both ends of rotary disc all are equipped with outer gear groove, adjusting sleeve's one side is installed with connecting sleeve, be equipped with inner gear groove in connecting sleeve, and outer gear groove and inner gear groove are connected through the engagement of the teeth, and installation sleeve is sleeved on the outside of threaded rod. The device avoids traditional maintenance manual screwing adjustment part, installs fast, saves whole maintenance task period, improves work efficiency.
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Description

Technical Field

[0001] This utility model belongs to the field of automotive parts assembly technology, and more specifically, it relates to an auxiliary tool for installing rear axle oil seals. Background Technology

[0002] The rear axle oil seal installation aid is a tool specifically designed for the installation of rear axle oil seals in automobiles, trucks, and other vehicles. Its main function is to help technicians ensure that the oil seal is accurately and quickly installed within a limited operating space, preventing damage or improper installation due to improper operation.

[0003] Based on the above, the inventors have discovered the following problems: In the process of using existing rear axle oil seal installation auxiliary tools, most of them rely on operators to manually tighten and adjust the components, resulting in uneven pressure. Furthermore, they are inefficient when repairing multiple parts, thus reducing the work efficiency of repairing and replacing automotive rear axle oil seals.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a rear axle oil seal installation auxiliary tool in order to achieve a more practical purpose. Utility Model Content

[0005] The purpose and effect of this utility model, a rear axle oil seal installation auxiliary tool, are achieved by the following specific technical means:

[0006] A rear axle oil seal installation auxiliary tool includes a rear axle connecting shaft, an adjusting sleeve, and a connecting rod. The rear axle connecting shaft has an installation groove and a threaded hole. The oil seal body is installed in the installation groove. An installation plate is installed on one side of the adjusting sleeve, and an installation sleeve is installed on one side of the installation plate. One side of the installation sleeve is in contact with the surface of the oil seal body. A threaded rod is installed inside the adjusting sleeve. One end of the threaded rod is threadedly connected to the threaded hole. A rotating disk is rotatably installed on one side of the threaded rod. Both ends of the rotating disk have external toothed grooves. A connecting sleeve is installed on one side of the adjusting sleeve. The connecting sleeve has internal toothed grooves. The external toothed grooves and internal toothed grooves are connected by toothed meshing. The installation sleeve is fitted onto the outside of the threaded rod.

[0007] Furthermore, a mounting base is installed on one side of the threaded rod, and a servo motor is mounted on the mounting base. The output end of the servo motor is connected to the rotating disk via a rotating rod.

[0008] Furthermore, a battery pack and a microcontroller are installed inside the mounting base, and a push-button control switch is installed on the side of the mounting base located on the servo motor.

[0009] Furthermore, the servo motor is electrically connected to the microcontroller, and the push-button control switch is also electrically connected to the microcontroller.

[0010] Furthermore, the mounting base is located inside the connecting sleeve, and the rotating disk has openings on both sides.

[0011] Furthermore, the adjusting sleeve is threadedly connected to the periphery of the threaded rod.

[0012] Furthermore, the mounting sleeve is provided with a pair of threaded holes, and a pair of locking bolts are mounted on the mounting plate, the pair of locking bolts being threadedly engaged with the threaded holes.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The rotating disc engages with the teeth of the outer and inner toothed grooves, causing the connecting sleeve to rotate. The rotation of the connecting sleeve causes the adjusting sleeve to rotate on the threaded rod, and the mounting plate pushes the mounting sleeve towards the oil seal body, pushing the oil seal body into the mounting groove. This allows for quick installation, saves the entire maintenance cycle, and improves maintenance efficiency.

[0015] By pressing the push-button control switch with the linkage, the microcontroller starts the servo motor. The rotation of the servo motor drives the rotating disk to rotate via the rotating rod. The adjusting sleeve is connected to the outside of the threaded rod through a threaded connection, which facilitates the rotation of the adjusting sleeve during the rotation process. This replaces the use of both hands, avoids the need for manual turning of adjusting parts in traditional maintenance, and improves work efficiency.

[0016] By rotating the locking bolt to disengage it from the threaded hole, the mounting sleeve can be replaced. This facilitates the replacement of mounting sleeves of the appropriate size according to different sizes of oil seal bodies, thus improving adaptability. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of an auxiliary tool for installing a rear axle oil seal according to this utility model.

[0018] Figure 2 This is an exploded view of an auxiliary tool for installing a rear axle oil seal according to this utility model.

[0019] Figure 3 This is a cross-sectional schematic diagram of an auxiliary tool for installing a rear axle oil seal according to this utility model.

[0020] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0021] 1. Rear axle connecting shaft; 2. Adjusting sleeve; 3. Mounting sleeve; 4. Mounting plate; 5. Threaded hole one; 6. Mounting groove; 7. Oil seal body; 8. Threaded hole two; 9. Threaded rod; 10. Microcontroller; 11. Locking bolt; 12. Mounting base; 13. Servo motor; 14. Rotary disk; 15. External toothed groove; 16. Push-button control switch; 17. Connecting sleeve; 18. Internal toothed groove; 19. Battery pack. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0023] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example:

[0026] As attached Figure 1 To be continued Figure 3 As shown:

[0027] This utility model provides an auxiliary tool for installing a rear axle oil seal, including a rear axle connecting shaft 1, an adjusting sleeve 2, and a connecting rod. The rear axle connecting shaft 1 is provided with an installation groove 6 and a threaded hole 8. An oil seal body 7 is installed in the installation groove 6. An installation plate 4 is installed on one side of the adjusting sleeve 2, and an installation sleeve 3 is installed on one side of the installation plate 4. One side of the installation sleeve 3 is in contact with the surface of the oil seal body 7. A threaded rod 9 is installed in the adjusting sleeve 2. One end of the threaded rod 9 is threadedly connected to the threaded hole 8. A rotating disk 14 is rotatably installed on one side of the threaded rod 9. Both ends of the rotating disk 14 are provided with external toothed grooves 15. A connecting sleeve 17 is installed on one side of the sleeve 2. The connecting sleeve 17 has an internal toothed groove 18. The external toothed groove 15 is connected to the internal toothed groove 18 by toothed engagement. The mounting sleeve 3 is fitted onto the outside of the threaded rod 9, and the threaded rod 9 is screwed into the threaded hole 8. By rotating the rotating disk 14, the external toothed groove 15 and the internal toothed groove 18 are engaged, driving the connecting sleeve 17 to rotate. The rotation of the connecting sleeve 17 causes the adjusting sleeve 2 to rotate on the threaded rod 9, and the mounting plate 4 pushes the mounting sleeve 3 towards the oil seal body 7, pushing the oil seal body 7 into the mounting groove 6. This allows for quick installation, saves the entire maintenance cycle, and improves maintenance efficiency.

[0028] The threaded rod 9 has a mounting base 12 on one side, and a servo motor 13 is mounted on the mounting base 12. The output end of the servo motor 13 is connected to the rotating disk 14 via a rotating rod.

[0029] The mounting base 12 houses a battery pack 19 and a microcontroller 10, and a push-button control switch 16 is mounted on one side of the servo motor 13.

[0030] The servo motor 13 is electrically connected to the microcontroller 10, and the push-button control switch 16 is also electrically connected to the microcontroller 10. By pressing the push-button control switch 16 with the connecting rod, the microcontroller 10 starts the servo motor 13. The rotation of the servo motor 13 drives the rotating disk 14 to rotate through the rotating rod, which avoids the need for manual turning of adjustment parts in traditional maintenance and improves work efficiency.

[0031] The mounting base 12 is located inside the connecting sleeve 17, and the rotating disk 14 has openings on both sides, which facilitate the extension of the connecting rod to the position of the push-button control switch 16.

[0032] The adjusting sleeve 2 is threadedly connected to the outer periphery of the threaded rod 9, which facilitates the rotation of the adjusting sleeve 2 during the rotation of the connecting sleeve 17, thus replacing the need for both hands.

[0033] The mounting sleeve 3 is provided with a pair of threaded holes 5, and the mounting plate 4 is provided with a pair of locking bolts 11. The pair of locking bolts 11 are threadedly connected to the threaded holes 5. By rotating the locking bolts 11, they are disengaged from the threaded holes 5, and the mounting sleeve 3 can be replaced. This facilitates the replacement of the mounting sleeve 3 of the corresponding size according to the oil seal body 7 of different sizes, thus improving adaptability.

[0034] The specific usage and function of this embodiment are as follows:

[0035] First, check the integrity of the device. Only use it after confirming it is intact. During use, first place the oil seal body 7 at the edge of the rear axle connecting shaft 1. Screw the threaded rod 9 into the threaded hole 8. Extend the connecting rod from the opening of the rotating disk 14 to the position of the push-button control switch 16. The connecting rod pushes the push-button control switch 16, and the microcontroller 10 starts the servo motor 13. The servo motor 13 rotates, driving the rotating disk 14 to rotate via the rotating rod. The adjusting sleeve 2 is threadedly connected to the periphery of the threaded rod 9. As the rotating disk 14 rotates, the outer toothed groove 15 and the inner toothed groove 18 mesh. The connecting sleeve 17 rotates, causing the adjusting sleeve 2 to rotate on the threaded rod 9. The mounting plate 4 pushes the mounting sleeve 3 towards the oil seal body 7, pushing the oil seal body 7 into the mounting groove 6 for quick installation. This saves time and improves maintenance efficiency. By rotating the locking bolt 11, the mounting sleeve 3 can be disengaged from the threaded hole 5 and replaced. This allows for easy replacement of the mounting sleeve 3 with the appropriate size for different sizes of oil seal bodies 7, improving adaptability. This device has a novel overall design and simple structure, making it worthy of widespread promotion and use.

[0036] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A rear axle oil seal installation auxiliary tool, comprising a rear axle connecting shaft (1), an adjusting sleeve (2), and a connecting rod, characterized in that: The rear axle connecting shaft (1) is provided with a mounting groove (6) and a threaded hole (8). An oil seal body (7) is installed in the mounting groove (6). A mounting plate (4) is installed on one side of the adjusting sleeve (2). A mounting sleeve (3) is installed on one side of the mounting plate (4). One side of the mounting sleeve (3) is in contact with the surface of the oil seal body (7). A threaded rod (9) is installed in the adjusting sleeve (2). One end of the threaded rod (9) is threadedly connected to the threaded hole (8). A rotating disk (14) is rotatably installed on one side of the threaded rod (9). Both ends of the rotating disk (14) are provided with external tooth grooves (15). A connecting sleeve (17) is installed on one side of the adjusting sleeve (2). An internal tooth groove (18) is provided in the connecting sleeve (17). The external tooth groove (15) and the internal tooth groove (18) are connected by toothed meshing. The mounting sleeve (3) is fitted on the outside of the threaded rod (9).

2. The rear axle oil seal installation auxiliary tool as described in claim 1, characterized in that: A mounting base (12) is installed on one side of the threaded rod (9), and a servo motor (13) is installed on the mounting base (12). The output end of the servo motor (13) is connected to the rotating disk (14) through a rotating rod.

3. The rear axle oil seal installation auxiliary tool as described in claim 2, characterized in that: The mounting base (12) houses a battery pack (19) and a microcontroller (10), and a push-button control switch (16) is mounted on the side of the mounting base (12) located on the servo motor (13).

4. The rear axle oil seal installation auxiliary tool as described in claim 3, characterized in that: The servo motor (13) is electrically connected to the microcontroller (10), and the push-button control switch (16) is electrically connected to the microcontroller (10).

5. The rear axle oil seal installation auxiliary tool as described in claim 4, characterized in that: The mounting base (12) is located inside the connecting sleeve (17), and the rotating disk (14) has openings on both sides.

6. The rear axle oil seal installation auxiliary tool as described in claim 5, characterized in that: The adjusting sleeve (2) is threadedly connected to the periphery of the threaded rod (9).

7. The rear axle oil seal installation auxiliary tool as described in claim 6, characterized in that: The mounting sleeve (3) is provided with a pair of threaded holes (5), and the mounting plate (4) is provided with a pair of locking bolts (11). The pair of locking bolts (11) are threadedly engaged with the threaded holes (5).