Limited slip differential with easy maintenance

Abstract

The utility model discloses a limited slip differential convenient to maintenance, including half axle gear, the outside swing joint of half axle gear has the differential housing, the top of differential housing is equipped with the oil hole for perfusion lubricating oil, the top fixedly connected with the opening and closing mechanism of differential housing, the opening and closing mechanism includes slide rail assembly, the top fixedly connected in differential housing guarantees its position can be fixed of slide rail assembly, the inner chamber fixedly connected with spring assembly of slide rail assembly provides the resilience. The utility model discloses through setting up and contain slide rail assembly, spring assembly, pull plate subassembly, transmission plate and sealing gasket's opening and closing mechanism, reach using slide rail guide and spring resilience, make sealing gasket board slidably close or open the effect of oil hole, solved the problem that traditional structure is inconvenient to open and close oil hole to add lubricating oil operation quickly, realized the function that is convenient to maintenance and maintenance later period.

Description

Technical Field

[0001] This utility model relates to the field of automotive differential technology, specifically a limited-slip differential that is easy to maintain. Background Technology

[0002] A limited-slip differential is an improved type of differential that adds a limited-slip function to the traditional differential. It can distribute torque more reasonably when the vehicle is turning or the drive wheels are slipping, thereby improving the vehicle's handling and passability. When cornering at high speed, the limited-slip differential can reduce the spinning of the inner wheel and transfer more torque to the outer wheel, thereby enhancing the vehicle's steering response and stability and reducing understeer or fishtailing.

[0003] According to a patent published on the China Patent Network, the patent title is "An Anti-collision Limited-Slip Differential," patent application number 202021357069.7. This utility model relates to the field of automotive parts technology and discloses an anti-collision limited-slip differential, including a wheel axle. The wheel axle is externally connected to a limited-slip differential body. Both sides of the limited-slip differential body are movably connected to collars. An insertion port is provided on the front of the limited-slip differential body. Two inner rings are fixedly connected to the outside of the wheel axle. Each of the two inner rings is fitted with an outer ring. Ball bearings are movably connected between the two inner rings and the outer rings. An anti-collision sleeve is movably connected to the outside of the limited-slip differential body. A locking bolt is movably connected inside the anti-collision sleeve. Stabilizing rings are fixedly connected to both sides inside the anti-collision sleeve. This anti-collision limited-slip differential has a simplified overall structure and facilitates external protection, effectively solving the problem of the limited-slip differential being susceptible to external impacts due to the lack of protective mechanisms on it. However, during long-term use, the internal lubricating oil in the aforementioned limited-slip differential is depleted, requiring maintenance and lubrication. This necessitates complete disassembly, which is inconvenient.

[0004] Therefore, it is necessary to redesign the limited-slip differential to effectively prevent the inconvenience of adding lubricating oil. Utility Model Content

[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide a limited-slip differential that is easy to maintain, with the advantage of quickly adding lubricating oil during later maintenance, thus solving the problem of inconvenient later maintenance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a limited-slip differential that is easy to maintain, including a half-shaft gear; The outer side of the half-shaft gear is movably connected to the differential housing; The top of the differential housing has an oil filling hole for adding lubricating oil; An opening and closing mechanism is fixedly connected to the top of the differential housing; The opening and closing mechanism includes a slide rail assembly, which is fixedly connected to the top of the differential housing to ensure its position is fixed. A spring assembly providing rebound force is fixedly connected to the inner cavity of the slide rail assembly. A pull plate assembly is slidably connected to the inner wall of the slide rail assembly. A transmission plate is fixedly connected to the outer side of the pull plate assembly. The outer side of the transmission plate extends to the outer side of the slide rail assembly. A sealing gasket for sealing the oil injection hole is fixedly connected to the bottom of the transmission plate. Positioning mechanisms are fixedly connected to both sides of the slide rail assembly.

[0007] In a preferred embodiment of the present invention, the positioning mechanism includes a pivot seat, which is fixedly connected to the outside of the slide rail assembly. Both sides of the pull plate assembly are fixedly connected to long plates. The top and bottom of the pivot seat are movably connected to limiting plates for restricting the movement of the long plates. Both sides of the slide rail assembly are fixedly connected to baffle assemblies for restricting the movement distance of the limiting plates.

[0008] As a preferred embodiment of this utility model, a short spring for resetting is fixedly connected to the outer side of the limiting plate, and a second baffle is fixedly connected to the outer side of the short spring. The second baffle is fixedly connected to the slide rail assembly.

[0009] As a preferred embodiment of this utility model, both sides of the pull plate assembly are fixedly connected with connecting strips for reinforcing the connection, and the inner side of the connecting strips is fixedly connected to the outer side of the long plate.

[0010] As a preferred embodiment of this utility model, right-angle plates are fixedly connected to both sides of the transmission plate, and the bottom of the right-angle plates is fixedly connected to the top of the sealing gasket plate.

[0011] As a preferred embodiment of this utility model, a rubber pad is fixedly connected to the inner side of the limiting plate, which can reduce the wear caused by the contact between the limiting plate and the baffle assembly.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by setting an opening and closing mechanism including a slide rail assembly, a spring assembly, a pull plate assembly, a transmission plate and a sealing gasket, achieves the effect of using the slide rail guide and the spring rebound to allow the sealing gasket to slide to close or open the oil filling hole. This solves the problem that the traditional structure is not convenient for quickly opening and closing the oil filling hole for adding lubricating oil, and realizes the function of facilitating later maintenance.

[0013] 2. This utility model achieves the effect of limiting and locking the long plate at a specific position by setting a positioning mechanism composed of a rotating shaft seat, a long plate, a limiting plate and a baffle assembly. This solves the problem of accidental sliding of the opening and closing mechanism when it is open or closed, and realizes the function of stably maintaining the state of the lubricating oil filling port cover.

[0014] 3. This utility model achieves the effect of providing automatic reset elastic force to the limit plate by setting a short spring and a second baffle connected to the limit plate, which solves the problem that the limit plate needs to be manually reset or may get stuck, and realizes the convenient function of the positioning mechanism being able to automatically return to its original position after operation and facilitating continuous operation.

[0015] 4. This utility model enhances the connection strength between the pull plate assembly and the long plate by setting connecting strips on both sides of the pull plate assembly to fix the long plate. This solves the problem that the connection of the moving parts is prone to loosening or damage under frequent stress, and improves the overall structural stability and durability of the opening and closing mechanism.

[0016] 5. This utility model achieves the effect of strengthening the connection between the transmission plate and the sealing gasket from both sides by setting right-angle plates on both sides of the transmission plate and fixing them with the sealing gasket, thus solving the problem that the sealing gasket may detach from the transmission plate during repeated force-bearing movements and ensuring the reliable transmission of sealing and closing actions.

[0017] 6. This utility model reduces the impact and friction when the limiting plate contacts the baffle assembly by setting a rubber pad on the inner side of the limiting plate, thus solving the problem of wear and noise caused by direct collision of metal parts. It also protects the parts, reduces wear, and improves the operating feel. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a structural diagram of the opening and closing mechanism of this utility model; Figure 3 This is a partial structural exploded view of the present invention; Figure 4 This is a structural diagram of the positioning mechanism of this utility model.

[0019] In the diagram: 1. Half-shaft gear; 2. Differential housing; 3. Opening and closing mechanism; 4. Slide rail assembly; 5. Spring assembly; 6. Pull plate assembly; 7. Transmission plate; 8. Sealing gasket; 9. Positioning mechanism; 10. Rotary shaft seat; 11. Long plate; 12. Limiting plate; 13. Baffle assembly; 14. Short spring; 15. Second baffle; 16. Connecting strip; 17. Right angle plate; 18. Rubber pad. Detailed Implementation

[0020] 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.

[0021] like Figures 1 to 4 As shown, the present invention provides a limited-slip differential that is easy to maintain, including a half-shaft gear 1; The outer side of the half-shaft gear 1 is movably connected to the differential housing 2; The top of the differential housing 2 is provided with an oil filling hole for filling with lubricating oil; An opening and closing mechanism 3 is fixedly connected to the top of the differential housing 2; The opening and closing mechanism 3 includes a slide rail assembly 4, which is fixedly connected to the top of the differential housing 2 to ensure that its position can be fixed. A spring assembly 5 that provides rebound force is fixedly connected to the inner cavity of the slide rail assembly 4. A pull plate assembly 6 is slidably connected to the inner wall of the slide rail assembly 4. A transmission plate 7 is fixedly connected to the outer side of the pull plate assembly 6. The outer side of the transmission plate 7 extends to the outer side of the slide rail assembly 4. A sealing gasket 8 for sealing the oil injection hole is fixedly connected to the bottom of the transmission plate 7. Positioning mechanisms 9 are fixedly connected to both sides of the slide rail assembly 4.

[0022] The positioning mechanism 9 is used to lock the opening and closing mechanism 3 when it is in a specific open or closed position. The positioning mechanism 9 includes a rotating shaft seat 10 as a rotating support, which is fixedly connected to the outside of the slide rail assembly 4. The long plate 11 is fixedly connected to both sides of the pull plate assembly 6 and moves synchronously with the pull plate assembly 6. Limiting plates 12 are rotatably connected to the top and bottom of the rotating shaft seat 10 to limit the movement of the long plate 11 at a specific angle. Baffle assemblies 13 for limiting the swing angle of the limiting plates 12 are also fixedly connected to both sides of the slide rail assembly 4. When it is necessary to open the oil filling hole, the transmission plate 7 is pulled, which drives the pull plate assembly 6 and the long plate 11 to slide. When the long plate 11 moves to a position where it is no longer in contact with the limiting plate 12, the limiting plate 12 rotates under the elastic force of the short spring 14 and locks behind the long plate 11, preventing it from resetting due to the elastic force of the spring assembly 5, thereby keeping the oil filling hole in the open state.

[0023] To optimize the operating feel of the positioning mechanism and achieve automatic reset, a short spring 14 providing reset force is fixedly connected to the outer side of the limiting plate 12. A second baffle 15 is fixedly connected to the other end of the short spring 14, and the second baffle 15 is fixedly connected to the slide rail assembly 4. The preload of the short spring 14 causes the limiting plate 12 to tend to maintain its initial position, disengaged from the baffle assembly 13 or the long plate 11, when no external force intervenes. When the limiting plate 12 is manually rotated to unlock the long plate 11, releasing the limiting plate 12 allows it to automatically reset to its initial position under the tension of the short spring 14, facilitating the next operation.

[0024] To enhance the overall structural strength of the opening and closing mechanism, connecting strips 16 are fixedly connected to both sides of the pull plate assembly 6 for reinforcing the connection. The inner side of the connecting strip 16 is fixedly connected to the outer side of the long plate 11. The connection strips 16 increase the connection area and rigidity between the pull plate assembly 6 and the long plate 11, and transmit the sliding force more evenly, thereby improving the durability of the moving parts under repeated operation.

[0025] To ensure a secure connection between the sealing gasket 8 and the transmission plate 7, right-angle plates 17 are fixedly connected to both sides of the transmission plate 7, with the bottom of the right-angle plates 17 fixedly connected to the top of the sealing gasket 8. The right-angle plates 17 clamp and fix the sealing gasket 8 from both sides, forming a stronger mechanical connection. This effectively prevents the sealing gasket 8 from loosening or falling off due to stress during repeated opening and closing movements, ensuring the reliability of the seal.

[0026] To reduce wear and noise during the operation of the positioning mechanism, a rubber pad 18 is fixedly connected to the inner side of the limiting plate 12. When the limiting plate 12 rotates and comes into contact with the baffle assembly 13 or the long plate 11, the rubber pad 18 acts as a buffer medium, absorbing impact and reducing friction, thereby protecting the metal parts, reducing operating noise, and extending the service life of the parts.

[0027] Working Principle: When adding lubricating oil to the limited-slip differential, the operator first operates the positioning mechanism 9. For mechanisms in the closed / locked state, the limit plate 12 is manually moved to rotate and disengage from the limit on the long plate 11. After unlocking, under the elastic force of the spring assembly 5, the pull plate assembly 6, transmission plate 7, and sealing gasket 8 can slide along the slide rail assembly 4, keeping the oil filling hole closed. When it is necessary to open the oil filling hole, the transmission plate 7 is pulled outward to overcome the elastic force of the spring assembly 5, causing the pull plate assembly 6, long plate 11, and sealing gasket 8 to slide together, thereby opening the oil filling hole. After the long plate 11 slides past the position of the limit plate 12, the limit plate 12 can be released, or its structure can automatically lock, causing the limit plate 12 to return to its original position or stay at a specific angle under the action of the short spring 14, thereby locking the long plate 11 and preventing it from sliding back, keeping the oil filling hole open for easy lubrication. After filling, operate the limit plate 12 again to release the limit on the long plate 11. The restoring force of the spring assembly 5 will automatically pull the sealing gasket 8 back to its original position, resealing the oil filling hole. The entire opening and closing process can be completed externally without disassembling the differential housing, greatly facilitating subsequent maintenance.

[0028] In summary, this easy-to-maintain limited-slip differential, by setting up an opening and closing mechanism including a slide rail assembly, a spring assembly, a pull plate assembly, a transmission plate, and a sealing gasket, achieves the effect of using the slide rail guide and spring rebound to allow the sealing gasket to slide open or close the oil filling hole. This solves the problem of traditional structures not being able to quickly open and close the oil filling hole for adding lubricating oil, and realizes the function of facilitating later maintenance.

[0029] 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.

[0030] 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 maintenance-friendly limited-slip differential, comprising a half-shaft gear (1); The outer side of the half-shaft gear (1) is movably connected to the differential housing (2); The top of the differential housing (2) is provided with an oil filling hole for filling with lubricating oil; An opening and closing mechanism (3) is fixedly connected to the top of the differential housing (2); Its features are: The opening and closing mechanism (3) includes a slide rail assembly (4), which is fixedly connected to the top of the differential housing (2). A spring assembly (5) providing rebound force is fixedly connected to the inner cavity of the slide rail assembly (4). A pull plate assembly (6) is slidably connected to the inner wall of the slide rail assembly (4). A transmission plate (7) is fixedly connected to the outer side of the pull plate assembly (6). The outer side of the transmission plate (7) extends through to the outer side of the slide rail assembly (4). A sealing gasket (8) for sealing the oil injection hole is fixedly connected to the bottom of the transmission plate (7). A positioning mechanism (9) is fixedly connected to both sides of the slide rail assembly (4).

2. The easily maintainable limited-slip differential according to claim 1, characterized in that: The positioning mechanism (9) includes a pivot seat (10), which is fixedly connected to the outside of the slide rail assembly (4). Both sides of the pull plate assembly (6) are fixedly connected to long plates (11). The top and bottom of the pivot seat (10) are movably connected to limiting plates (12) for restricting the movement of long plates (11). Both sides of the slide rail assembly (4) are fixedly connected to baffle assemblies (13) for restricting the movement distance of the limiting plates (12).

3. A limited-slip differential that is easy to maintain according to claim 2, characterized in that: A short spring (14) for resetting is fixedly connected to the outer side of the limiting plate (12), and a second baffle (15) is fixedly connected to the outer side of the short spring (14). The second baffle (15) is fixedly connected to the slide rail assembly (4).

4. A limited-slip differential that is easy to maintain according to claim 2, characterized in that: Both sides of the pull plate assembly (6) are fixedly connected with connecting strips (16) for reinforcing the connection, and the inner side of the connecting strips (16) is fixedly connected to the outer side of the long plate (11).

5. A limited-slip differential that is easy to maintain according to claim 1, characterized in that: Both sides of the transmission plate (7) are fixedly connected to right angle plates (17), and the bottom of the right angle plates (17) is fixedly connected to the top of the sealing gasket plate (8).

6. A limited-slip differential that is easy to maintain according to claim 2, characterized in that: A rubber pad (18) is fixedly connected to the inner side of the limiting plate (12), and the rubber pad (18) can reduce the wear caused by the contact between the limiting plate (12) and the baffle assembly (13).

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