Differential oil seal plugging tool guide positioning structure

Abstract

The utility model discloses a differential oil seal plugging frock orientation positioning structure, including guide post, the left side of guide post is provided with recess, the recess is cylindrical. The utility model discloses adopt the recess of cylindrical with inner spline who sets up in the left side of guide post, can with the accurate cooperation of differential half axle's outer spline, realize the stable connection of guide post and differential, ensure the integral positioning accuracy. The movable frame in the sliding groove cooperates with the threaded rod, can move steadily through the rotation handle driving sleeve and oil seal assembly pressure ring, make oil seal even stress in the installation process, effectively avoid the damage or deformation of oil seal in traditional installation mode because of uneven stress, the lamination design of guide post and oil seal assembly pressure ring further guarantees the coaxial degree of oil seal installation, improves the plugging effect and installation quality, reduces the subsequent problem of installation deviation, and the device has the advantages of accurate positioning, good plugging effect and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of differential oil seal installation technology, specifically a guide and positioning structure for a differential oil seal plugging tool. Background Technology

[0002] In the differential assembly process, the installation quality of the oil seal directly affects the differential's sealing performance and service life. Currently, the differential oil seal plugging fixtures used in the industry generally suffer from insufficient positioning accuracy. In actual operation, the alignment process between the fixture and the differential oil seal mounting hole relies on manual experience, making precise fitting difficult and easily leading to misalignment or tilting of the plugging component.

[0003] This positioning deviation not only leads to poor oil seal sealing, allowing impurities to enter the differential and accelerating component wear, but may also cause oil seal deformation and damage due to uneven force during installation, increasing rework rates and production costs. Furthermore, traditional tooling methods often rely on brute force methods such as hammering, which are not only labor-intensive but also fail to ensure uniform force on the oil seal, further affecting the stability of the sealing effect and making it difficult to meet the requirements of modern production for assembly precision and efficiency. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a guide and positioning structure for a differential oil seal plugging tool, which has the advantages of accurate positioning, good plugging effect and ease of use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a guide and positioning structure for a differential oil seal plugging tool, comprising a guide post, a groove on the left side of the guide post, the groove being cylindrical, an internal spline on the inner wall of the groove, a sliding groove inside the guide post, a movable frame slidably connected inside the sliding groove, the outer side of the movable frame extending to the outside of the guide post, a threaded rod rotatably connected inside the sliding groove, the threaded rod being threadedly connected to the movable frame, a rotating handle fixedly connected to the right side of the threaded rod extending to the right side of the guide post, a sleeve slidably connected to the surface of the guide post, the right side of the sleeve being fixedly connected to the left side of the movable frame, and an oil seal pressure ring fixedly connected to the left side of the sleeve, the inner wall of the oil seal pressure ring fitting against the surface of the guide post.

[0006] In a preferred embodiment of this invention, a bearing is fixedly connected inside the sliding groove, with the outer ring of the bearing fixedly connected to the sliding groove and the inner ring of the bearing fixedly connected to the threaded rod.

[0007] As a preferred embodiment of this invention, a handle is fixedly connected to the right side of the guide post surface, and the number of handles is three, which are evenly distributed in a ring on the surface of the guide post.

[0008] As a preferred embodiment of this utility model, a fixing block is fixedly connected to the surface of the rotating handle. The number of fixing blocks is three. The fixing blocks are evenly distributed in a ring on the surface of the rotating handle. A slot is provided on the side of the fixing block away from the rotating handle, and a grip rod is inserted into the slot.

[0009] As a preferred embodiment of this invention, the surface of the grip bar is provided with anti-slip texture.

[0010] As a preferred embodiment of this invention, the inner wall of the sleeve, the inner wall of the oil seal pressure ring, and the surface of the guide post are all smooth.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model employs a cylindrical groove with an internal spline on the left side of the guide post, which precisely engages with the external spline of the differential half-shaft, achieving a stable connection between the guide post and the differential and ensuring accurate overall positioning. The movable bracket within the sliding groove engages with the threaded rod, allowing the sleeve and oil seal pressure ring to move smoothly by rotating the handle. This ensures even force distribution on the oil seal during installation, effectively preventing damage or deformation caused by uneven force distribution in traditional installation methods. Furthermore, the close fit design between the guide post and the oil seal pressure ring further guarantees the coaxiality of the oil seal installation, improving the sealing effect and installation quality, and reducing subsequent problems caused by installation deviations. This device boasts advantages such as precise positioning, excellent sealing effect, and ease of use.

[0013] 2. This utility model, through the bearing fixed inside the sliding groove, effectively reduces the frictional resistance between the threaded rod and the sliding groove during rotation, making the rotation of the threaded rod smoother and more stable. This avoids wear caused by direct contact and extends the service life of both the threaded rod and the sliding groove. Simultaneously, the bearing ensures the coaxiality of the threaded rod during rotation, preventing instability of the movable frame due to threaded rod misalignment. This ensures that the oil seal pressure ring can apply force evenly, further improving the stability and accuracy of oil seal installation and reducing jamming during operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a front cross-sectional view of the sleeve and oil seal pressure ring structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the oil seal pressure ring and sleeve structure of this utility model;

[0017] Figure 4 This utility model Figure 1Enlarged schematic diagram of the structure at point A in the middle.

[0018] In the diagram: 1. Guide post; 2. Sliding groove; 3. Movable frame; 4. Threaded rod; 5. Rotary handle; 6. Sleeve; 7. Oil seal fitting pressure ring; 8. Internal spline; 9. Handle; 10. Fixing block; 11. Slot; 12. Grip bar. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 4 As shown, a guide and positioning structure for a differential oil seal plugging tool includes a guide post 1. A cylindrical groove is provided on the left side of the guide post 1, with an internal spline 8 on the inner wall of the groove. A sliding groove 2 is provided inside the guide post 1, and a movable frame 3 is slidably connected inside the sliding groove 2. The outer side of the movable frame 3 extends to the outside of the guide post 1. A threaded rod 4 is rotatably connected inside the sliding groove 2, and the threaded rod 4 is threadedly connected to the movable frame 3. A handle 5 is fixedly connected to the right side of the threaded rod 4, extending to the right side of the guide post 1. A sleeve 6 is slidably connected to the surface of the guide post 1, with the right side of the sleeve 6 fixedly connected to the left side of the movable frame 3. An oil seal pressure ring 7 is fixedly connected to the left side of the sleeve 6, with the inner wall of the oil seal pressure ring 7 fitting against the surface of the guide post 1. The inner diameter of the oil seal to be installed is the same as the diameter of the guide post 1. The operator first places the oil seal to be installed... The oil seal is fitted onto the surface of the guide post 1 from left to right. Then, the groove is aligned with the differential half-shaft, so that the internal spline 8 in the groove engages with the external spline on the surface of the differential half-shaft, thereby connecting the guide post 1 and the differential half-shaft together. At this time, the operator grips the handle 9 and rotates the handle 5 to rotate the threaded rod 4, which in turn moves the movable frame 3, sleeve 6, and oil seal pressure ring 7 to the left, thus pressing the oil seal to be installed into the oil seal mounting port of the differential. This method can apply uniform pressure to the oil seal to be installed, avoiding the damage caused by uneven force or deformation due to hammering, which is a problem with the existing method of using a hammer to knock the oil seal to be installed into the differential oil seal mounting port. The operator can insert the lever 12 into the slot 11 and then hold the lever 12, using the principle of lever saving effort, to more easily rotate the handle 5.

[0021] refer to Figure 2 The sliding groove 2 is fixedly connected to a bearing, and the outer ring of the bearing is fixedly connected to the sliding groove 2, while the inner ring of the bearing is fixedly connected to the threaded rod 4.

[0022] As a technical optimization of this utility model, the bearing fixed inside the sliding groove 2 effectively reduces the frictional resistance between the threaded rod 4 and the sliding groove 2 during rotation, making the rotation of the threaded rod 4 smoother and more stable, avoiding wear caused by direct contact, and extending the service life of the threaded rod 4 and the sliding groove 2. At the same time, the bearing ensures the coaxiality of the threaded rod 4 during rotation, preventing instability of the movable frame 3 due to threaded rod 4 misalignment, ensuring that the oil seal pressure ring 7 can apply force evenly, further improving the stability and accuracy of oil seal installation, and reducing jamming during operation.

[0023] refer to Figure 1 A handle 9 is fixedly connected to the right side of the guide post 1. There are three handles 9, which are evenly distributed in a ring on the surface of the guide post 1.

[0024] As a technical optimization of this utility model, three evenly distributed annular grips 9 fixed on the right side of the guide column 1 provide a stable gripping point for the operator, facilitating the stability of the guide column 1 during installation and preventing it from shaking or shifting. This design is ergonomic, allowing the operator to control the device with less effort. Especially when rotating the handle 5 for oil seal pressing, the grips 9 effectively balance the reaction force, ensuring the stability and safety of the operation process, reducing installation deviations caused by unstable grip, and improving the overall convenience and reliability of operation.

[0025] refer to Figure 1 The surface of the handle 5 is fixedly connected with a fixing block 10. There are three fixing blocks 10. The fixing blocks 10 are evenly distributed in a ring on the surface of the handle 5. A slot 11 is provided on the side of the fixing block 10 away from the handle 5. A handle 12 is inserted into the slot 11.

[0026] As a technical optimization of this utility model, the three evenly distributed annular fixing blocks 10 on the surface of the handle 5 and the grip rod 12 in the slot 11 provide a more effortless way to rotate the handle 5. The operator can easily rotate the handle 5 and the threaded rod 4 using the lever principle through the grip rod 12, reducing the operational intensity, and is especially suitable for installation scenarios requiring greater force. The plug-in design of the grip rod 12 and the slot 11 makes it easy to disassemble and install, and it can be stored separately when not in use, reducing the space occupied by the device.

[0027] refer to Figure 1 The surface of the grip bar 12 is provided with anti-slip texture.

[0028] As a technical optimization of this utility model, the anti-slip texture on the surface of the grip 12 effectively increases the friction between the hand and the grip 12, preventing slippage due to sweaty or oily hands during operation. This ensures that the operator can hold the grip 12 stably and accurately control the rotation force and speed of the handle 5. This design improves operational safety, avoids loss of control due to slippage, reduces potential unexpected deviations during oil seal installation, and makes it easier for the operator to apply force, thus improving the overall stability and efficiency of the operation.

[0029] refer to Figure 1 The inner wall of sleeve 6, the inner wall of oil seal pressure ring 7, and the surface of guide post 1 are all smooth.

[0030] As a technical optimization of this utility model, the smooth design of the inner wall of the sleeve 6, the inner wall of the oil seal pressure ring 7, and the surface of the guide post 1 significantly reduces the frictional resistance during relative sliding between the components. This makes the movement of the sleeve 6 and the oil seal pressure ring 7 on the guide post 1 smoother and more stable, reducing wear caused by friction and extending the service life of each component. Simultaneously, the smooth surface prevents scratching or damage to the oil seal during installation, ensuring the integrity of the oil seal, guaranteeing its sealing performance is not affected, and improving installation quality and efficiency.

[0031] The working principle and usage process of this utility model are as follows: Before installing the oil seal using the differential oil seal sealing tooling guide positioning structure, it is necessary to check whether all components are intact, ensuring that there are no impurities or scratches on the surface of the guide post 1, the inner wall of the sleeve 6, and the inner wall of the oil seal fitting ring 7, and that the threaded rod 4 rotates smoothly without jamming. Then, take out the oil seal to be installed, confirm that the oil seal specifications match the differential oil seal installation port, and smoothly place the oil seal onto the surface of the guide post 1 from left to right, taking care to avoid scratching the oil seal edge against the surface of the guide post 1, ensuring that the oil seal is in a natural state on the guide post 1 without twisting. Next, the operator needs to align the groove on the left side of the guide post 1 with the differential half-shaft, so that the inner spline 8 on the inner wall of the groove accurately corresponds to the outer spline on the surface of the differential half-shaft. Slowly push the guide post 1, allowing the inner spline 8 to fully engage with the outer spline until the guide post 1 is securely connected to the differential half-shaft. At this point, it is necessary to check whether the guide post 1 is in a horizontal state to ensure that there will be no misalignment during subsequent installation. Afterwards, the operator holds the handle 9 on the surface of the guide column 1 to keep the guide column 1 stable and prevent it from shaking during operation.

[0032] Next, insert the grip lever 12 into the slot 11 of the fixing block 10 on the surface of the handle 5, ensuring that the grip lever 12 is securely installed. At this time, the operator can control the rotation of the handle 5 by gripping the grip lever 12. When starting the installation, the operator rotates the handle 5 clockwise by gripping the grip lever 12. The handle 5 drives the threaded rod 4 to rotate in the sliding groove 2. Since the threaded rod 4 is threadedly connected to the movable frame 3, the rotation of the threaded rod 4 will cause the movable frame 3 to slide to the left in the sliding groove 2. The left side of the movable frame 3 is fixedly connected to the sleeve 6, so the sleeve 6 will move to the left along with the movable frame 3. The oil seal pressure ring 7 on the left side of the sleeve 6 will also move to the left. During the process of the oil seal pressure ring 7 moving to the left, it will contact the oil seal fitted on the guide post 1 and gradually apply pressure to the oil seal, pushing the oil seal along the guide post 1 towards the oil seal mounting port of the differential. During this process, the operator must maintain the stability of the handle 9 and apply force evenly through the lever 12 to ensure the smooth advancement of the oil seal pressure ring 7, avoiding tilting or damage to the oil seal due to uneven force. As the oil seal approaches the differential oil seal mounting port, the operator must carefully observe the position of the oil seal to ensure precise alignment with the mounting port until the oil seal is fully pressed into the mounting port. Once the oil seal is in place, rotate the handle 5 counterclockwise to move the movable bracket 3, sleeve 6, and oil seal pressure ring 7 to the right, disengaging them from the oil seal. Then, pull the guide post 1 from the differential half-shaft to complete the entire installation process. Finally, remove the lever 12 from the slot 11 and clean and tidy all components of the device for future use.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A guide and positioning structure for a differential oil seal plugging tool, comprising a guide post (1), characterized in that: The guide post (1) has a groove on its left side. The groove is cylindrical and has an internal spline (8) on its inner wall. The guide post (1) has a sliding groove (2) inside. A movable frame (3) is slidably connected inside the sliding groove (2). The outer side of the movable frame (3) extends to the outside of the guide post (1). A threaded rod (4) is rotatably connected inside the sliding groove (2). The threaded rod (4) is threadedly connected to the movable frame (3). The right side of the threaded rod (4) extends to the right side of the guide post (1) and is fixedly connected to a handle (5). A sleeve (6) is slidably connected to the surface of the guide post (1). The right side of the sleeve (6) is fixedly connected to the left side of the movable frame (3). An oil-sealed pressure ring (7) is fixedly connected to the left side of the sleeve (6). The inner wall of the oil-sealed pressure ring (7) is in contact with the surface of the guide post (1).

2. The guide and positioning structure of the differential oil seal plugging tooling according to claim 1, characterized in that: The sliding groove (2) is internally fixedly connected to a bearing, and the outer ring of the bearing is fixedly connected to the sliding groove (2), and the inner ring of the bearing is fixedly connected to the threaded rod (4).

3. The guide and positioning structure of the differential oil seal plugging tooling according to claim 2, characterized in that: A handle (9) is fixedly connected to the right side of the surface of the guide post (1). There are three handles (9), which are evenly distributed in a ring on the surface of the guide post (1).

4. The guide and positioning structure of the differential oil seal plugging tooling according to claim 3, characterized in that: The surface of the handle (5) is fixedly connected to a fixing block (10). There are three fixing blocks (10). The fixing blocks (10) are evenly distributed in a ring on the surface of the handle (5). A slot (11) is provided on the side of the fixing block (10) away from the handle (5). A handle (12) is inserted into the slot (11).

5. The guide and positioning structure of the differential oil seal plugging tooling according to claim 4, characterized in that: The surface of the grip (12) is provided with anti-slip texture.

6. The guide and positioning structure of the differential oil seal plugging tooling according to claim 5, characterized in that: The inner wall of the sleeve (6), the inner wall of the oil seal pressure ring (7), and the surface of the guide post (1) are all smooth.

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