Lightweight wear-resistant differential housing

Abstract

This utility model discloses a lightweight and wear-resistant differential housing, comprising: a cylindrical housing, an annular mounting seat fixedly connected to the top of the cylindrical housing, an annular bushing inserted into the inner ring of the annular mounting seat, an annular fixing block fixedly connected to one end of the outer ring of the annular bushing, a plug-in washer fixedly connected to the lower end of the annular fixing block, a threaded hole opened on the outer end of the plug-in washer, and a blocking annular sleeve threadedly connected to the outer side of the annular fixing block; when disassembling this utility model, pressing the arc-shaped pressing piece drives the movable block to compress the spring, and through the connecting piece, the pin rod extends into the through hole to press the ball, forcing the sliding block to retract into the orifice cavity. Pressing until the movable block touches the fixed tubular sleeve port, the pin rod is flush with the inner wall of the sleeve, and the blocking annular sleeve can be easily disassembled by rotating in the opposite direction. This design not only has anti-loosening and strong stability, but also has double fixation of bolt fastening and sliding block locking, preventing the parts from moving and separating from the sleeve. Disassembly and assembly are extremely convenient, and disassembly can be done with one hand without tools.

Description

Technical Field

[0001] This utility model belongs to the field of differential housing technology, specifically a lightweight and wear-resistant differential housing. Background Technology

[0002] The differential is a core component of a car's transmission system, allowing the left and right drive wheels to rotate at different speeds when the vehicle turns, preventing tire slippage or wear. Its housing is a shell that encloses and protects the gears, bearings, and other parts inside the differential. Its main functions are to fix the position of internal components, prevent dust and impurities from entering and lubricating oil from leaking, while transmitting power and bearing the impact and torque generated when the internal parts are working. Some lightweight housings can also help reduce vehicle weight and improve fuel economy or range.

[0003] For example, a lightweight wear-resistant differential housing disclosed in Chinese patent literature (publication number: CN222122154U) can limit the fixing bolts by using a push-blocking assembly and a spring-loaded clamping assembly to limit the push-blocking assembly, so that the push-blocking assembly always keeps the fixing bolts in a blocking state. This can prevent the fixing bolts from loosening due to vibration during differential use and effectively improve the stability of the differential during use.

[0004] However, when the return spring and the locking block limit the movement of the push-block assembly, the locking block is squeezed when the block sleeve rotates and pushes towards the locking block, so that the locking block is locked in the positioning slot, thus fixing the block sleeve. If disassembly is required, tools are needed to pry the locking block and force it to retract into the square mounting hole slot, which is not only difficult and not conducive to disassembly, but also easy to damage the components. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a lightweight and wear-resistant differential housing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a lightweight wear-resistant differential housing, comprising: a cylindrical housing, an annular mounting base connected to the top of the cylindrical housing, an annular bushing inserted into the inner ring of the annular mounting base, an annular fixing block connected to one end of the outer ring of the annular bushing, a plug-in washer connected to the lower end of the annular fixing block, a threaded hole provided at one outer end of the plug-in washer, a blocking annular sleeve threadedly connected to the outer side of the annular fixing block, a through hole provided at one end of the inner wall of the blocking annular sleeve, a pin mechanism provided at one outer end of the blocking annular sleeve, a bolt mounting through groove provided at one outer end of the annular mounting base, a bolt provided inside the bolt mounting through groove, and an annular groove provided above the annular mounting base.

[0007] As a further embodiment of this utility model: a hole-shaped receiving cavity is provided at the other end of the outer side of the annular mounting base, a spring is fixedly connected to one end of the hole-shaped receiving cavity, a sliding block is fixedly connected to one end of the spring, the sliding block is adapted to the through hole, and a ball is movably embedded at one end of the sliding block.

[0008] As a further embodiment of this utility model: the pin mechanism includes a fixed tubular sleeve, a spring, and a movable block. The fixed tubular sleeve is fixedly connected to one outer end of the blocking annular sleeve, the spring is fixedly connected to the inside of the fixed tubular sleeve, the movable block is slidably connected to the inside of the fixed tubular sleeve, and the other end of the spring is fixedly connected to the movable block; an arc-shaped pressing plate, a connecting plate, and a pin rod are also included. The arc-shaped pressing plate is fixedly connected to the front of the movable block, the connecting plate is fixedly connected to the bottom of the arc-shaped pressing plate, and the pin rod is fixedly connected to the bottom of the connecting plate. The end face of the pin rod matches the inner wall surface of the blocking annular sleeve.

[0009] As a further improvement of this utility model: the inner ring of the annular bushing is equipped with a connecting bearing, and the bottom of the cylindrical shell is fixedly connected with a connecting flange.

[0010] As a further embodiment of this utility model: multiple sets of the threaded hole, the through hole and the pin mechanism are connected together; the other end of the bolt passes through the bolt mounting slot and is threadedly connected to the threaded hole; and the annular groove is adapted to the insertion washer ring.

[0011] As a further embodiment of this utility model: multiple sets of the orifice cavity, the spring, the sliding block, and the ball bearing are provided, and the multiple sets of orifice cavities are symmetrically arranged on the outer side of the annular mounting base, and the sliding block is slidably connected to the orifice cavity.

[0012] Compared with the prior art, the present invention has the following beneficial effects: In use, the annular bushing is first inserted into the inner ring of the annular mounting base and brought to a tight fit. At this time, the insertion washer at the lower end of the annular fixing block is simultaneously embedded into the annular groove. Then, the bolt is passed through the bolt mounting slot of the annular mounting base and the threaded hole of the insertion washer and tightened until the insertion washer is pressed against the inner wall of the annular groove to strengthen the connection between the three and prevent movement during operation. Subsequently, the blocking annular sleeve, which is threadedly connected to the annular fixing block, is rotated to push it into the annular mounting base. During the process, pressing the ball causes the sliding block to retract into the cavity. After the inner wall of the sleeve is pressed against the outer wall of the mounting base, the spring pushes the sliding block into the through hole to complete the limiting position. When disassembling, press the arc-shaped pressing... The plate drives the movable block to compress the spring, and through the connecting plate, the pin rod extends into the through hole to press the ball bearing, forcing the sliding block to retract into the cavity. Pressing until the movable block touches the fixed tubular sleeve port, the pin rod is flush with the inner wall of the collar. Reverse rotation of the blocking ring sleeve allows for easy disassembly. This design not only has anti-loosening and strong stability, but also provides double fixation through bolt tightening and sliding block locking, preventing parts from moving and detaching from the collar. Disassembly and assembly are extremely convenient, requiring only one hand to press, without tools. It also reduces wear by using the ball bearing, avoids tool damage, and extends the life of the parts. In addition, the blocking ring sleeve can isolate the bolt from the outside world, reducing the risk of bolt corrosion caused by mud, water, and dust. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the annular bushing in this utility model; Figure 3 This is a schematic diagram of the structure of the annular mounting base in this utility model; Figure 4 This is a schematic diagram of the blocking ring sleeve in this utility model; Figure 5 This is a schematic diagram of the pin mechanism in this utility model.

[0014] In the diagram: 1. Cylindrical shell; 2. Annular mounting base; 21. Hole-shaped receiving cavity; 22. Spring 1; 23. Sliding block; 24. Ball bearing; 3. Annular bushing; 4. Annular fixing block; 5. Insertion washer; 51. Threaded hole; 6. Blocking annular sleeve; 7. Through hole; 8. Pin mechanism; 81. Fixed tubular sleeve; 82. Spring; 83. Movable block; 84. Arc-shaped pressing piece; 85. Connecting piece; 86. Pin rod; 9. Bolt mounting through groove; 10. Bolt; 11. Annular groove; 12. Connecting bearing; 13. Connecting flange. Detailed Implementation

[0015] 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.

[0016] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0017] Reference Figures 1 to 5In this embodiment of the present invention, a lightweight and wear-resistant differential housing includes: a cylindrical housing 1, an annular mounting base 2 fixedly connected to the top of the cylindrical housing 1, an annular bushing 3 inserted into the inner ring of the annular mounting base 2, an annular fixing block 4 fixedly connected to one end of the outer ring of the annular bushing 3, a insertion washer 5 fixedly connected to the lower end of the annular fixing block 4, a threaded hole 51 provided at one outer end of the insertion washer 5, a blocking annular sleeve 6 threadedly connected to the outer side of the annular fixing block 4, a through hole 7 provided at one end of the inner wall of the blocking annular sleeve 6, and a pin mechanism 8 provided at one outer end of the blocking annular sleeve 6. A bolt mounting slot 9 is provided at one outer end of the seat 2, and a bolt 10 is installed inside the bolt mounting slot 9. An annular groove 11 is provided above the annular mounting seat 2. Multiple sets of threaded holes 51, through holes 7, and pin mechanisms 8 are connected. The other end of the bolt 10 passes through the bolt mounting slot 9 and is threadedly connected to the threaded hole 51. The annular groove 11 is adapted to the insertion washer 5. In use, one end of the annular bushing 3 is inserted into the inner ring of the annular mounting seat 2, so that the two fit tightly. At this time, the insertion washer 5 at the lower end of the annular fixing block 4 will be simultaneously embedded into the annular groove 11 above the annular mounting seat 2, which is for subsequent... Bolt 10 is used to secure the foundation. Then, bolt 10 is inserted into the bolt mounting slot 9 on the outside of the annular mounting base 2, with its other end threaded into the threaded hole 51 on the outside of the insert washer 5. Bolt 10 is tightened until the insert washer 5 is tightly fitted against the inner wall of the annular groove 11. The axial tightening force of bolt 10 strengthens the connection stability between the annular bushing 3, the annular fixing block 4, and the annular mounting base 2, preventing relative movement between the three components during differential operation. Subsequently, the blocking annular sleeve 6 is rotated. Because it is threadedly connected to the annular fixing block 4, the blocking annular sleeve 6 will move along the outer edge of the annular fixing block 4 during rotation. The side thread gradually pushes towards the annular mounting base 2. During this process, the ball 24 is pressed, causing it and the sliding block 23 to retract into the cavity 21 until the inner wall of the blocking annular sleeve 6 is in contact with the outer wall of the annular mounting base 2. At this time, the thrust of the spring 22 will push the sliding block 23 out of the cavity 21 until it is pushed into the through hole 7. In this way, while the blocking annular sleeve 6 is protected by the bolt 10 and isolated from it, the sliding block 23 is locked in the through hole 7, restricting the circumferential rotation of the blocking annular sleeve 6 and preventing the threads of the blocking annular sleeve 6 and the annular fixing block 4 from loosening and causing the blocking annular sleeve 6 to detach.

[0018] Reference Figure 2 and Figure 3 The outer side of the ring mounting base 2 has a hole-shaped receiving cavity 21. A spring 22 is fixedly connected to one end of the hole-shaped receiving cavity 21. A sliding block 23 is fixedly connected to one end of the spring 22. The sliding block 23 is adapted to the through hole 7. A ball 24 is movably embedded in one end of the sliding block 23. Multiple sets of cavity 21, spring 22, sliding block 23, and ball bearing 24 are provided. Multiple sets of cavity 21 are symmetrically arranged on the outside of the annular mounting base 2. The sliding block 23 is slidably connected to the cavity 21. During disassembly, when the arc-shaped pressing piece 84 is pressed, the pin 86 enters the through hole 7 and applies pressure to the ball bearing 24. The ball bearing 24 can transmit the pressure to the sliding block 23, forcing the sliding block 23 to retract into the cavity 21. When the blocking annular sleeve 6 is rotated in the opposite direction, the pressure applied to the ball bearing 24 by its inner wall can also drive the sliding block 23 to retract through the ball bearing 24. At the same time, the ball bearing 24 can reduce the friction between the blocking annular sleeve 6 and the sliding block 23, extending the service life of the component.

[0019] Reference Figure 1 , Figure 4 and Figure 5 The pin mechanism 8 includes a fixed tubular sleeve 81, a spring 82, and a movable block 83. The fixed tubular sleeve 81 is fixedly connected to one end of the outer side of the blocking annular sleeve 6, the spring 82 is fixedly connected to the inside of the fixed tubular sleeve 81, the movable block 83 is slidably connected to the inner side of the fixed tubular sleeve 81, and the other end of the spring 82 is fixedly connected to the movable block 83. The device consists of an arc-shaped pressing plate 84, a connecting plate 85, and a pin 86. The arc-shaped pressing plate 84 is fixedly connected to the front of the movable block 83, the connecting plate 85 is fixedly connected to the lower part of the arc-shaped pressing plate 84, and the pin 86 is fixedly connected to the lower part of the connecting plate 85. The end face of the pin 86 matches the inner wall surface of the blocking annular sleeve 6. When disassembling, pressing the arc-shaped pressing plate 84 will cause the movable block 83 to slide axially within the fixed tubular sleeve 81, while simultaneously compressing the spring 82. The movable block 83, through the connecting plate 85, will synchronously drive the pin 86 to move towards the through hole 7 until the pin 86 enters the through hole 7. When pressing, the movable block 83 must contact the end of the fixed tubular sleeve 81. At this point, the end face of the pin 86 is flush with the inner wall surface of the blocking annular sleeve 6 to avoid exceeding the limit, which would hinder disassembly. The design of multiple arc-shaped pressing plates 84 in a ring shape also facilitates single-handed pressing during disassembly, eliminating the need for individual pressing.

[0020] Reference Figure 1 and Figure 2 The inner ring of the annular bushing 3 is fitted with a connecting bearing 12, and the bottom of the cylindrical housing 1 is fixedly connected with a connecting flange 13. The inner ring of the annular bushing 3 and the connecting bearing 12 are installed using existing technology to ensure that the connecting bearing 12 and the annular bushing 3 are coaxial, providing stable support for the subsequent internal transmission components of the differential. The connecting flange 13 is a component that is connected to the corresponding mounting structure of the automotive transmission system.

[0021] The working principle of this utility model is as follows: In use, one end of the annular bushing 3 is inserted into the inner ring of the annular mounting base 2, so that the two fit tightly together. At this time, the insertion washer 5 at the lower end of the annular fixing block 4 will be simultaneously embedded into the annular groove 11 above the annular mounting base 2, laying the foundation for the subsequent fixing of the bolt 10. Then, the bolt 10 is inserted through the bolt mounting through groove 9 on the outside of the annular mounting base 2, so that its other end is threadedly connected to the threaded hole 51 on the outside of the insertion washer 5. Tighten the bolt 10 until the insertion washer 5 fits tightly against the inner wall of the annular groove 11. Through the axial tightening force of the bolt 10, the connection stability of the annular bushing 3, the annular fixing block 4 and the annular mounting base 2 is strengthened, and relative movement of the three is avoided when the differential is running. Then rotate The blocking ring sleeve 6, because it is threadedly connected to the annular fixing block 4, will gradually move towards the annular mounting seat 2 along the outer thread of the annular fixing block 4 during rotation. During this process, the ball bearing 24 is pressed, causing it and the sliding block 23 to retract into the cavity 21 until the inner wall of the blocking ring sleeve 6 is in contact with the outer wall of the annular mounting seat 2. At this time, the thrust of the spring 22 will push the sliding block 23 out of the cavity 21 until it is pushed into the through hole 7. In this way, while the blocking ring sleeve 6 is isolated by the protective bolt 10, the sliding block 23 is stuck in the through hole 7, restricting the circumferential rotation of the blocking ring sleeve 6 and preventing the threads of the blocking ring sleeve 6 and the annular fixing block 4 from loosening and causing the blocking ring sleeve 6 to detach. During disassembly, press the arc-shaped pressing plate 84. The arc-shaped pressing plate 84 drives the movable block 83 to slide axially within the fixed tubular sleeve 81, simultaneously compressing the spring 82. The movable block 83, through the connecting piece 85, synchronously drives the pin rod 86 to move towards the through hole 7 until the pin rod 86 enters the through hole 7, applying pressure to the ball 24 and forcing the sliding block 23 to retract into the cavity 21. Pressing continues until the movable block 83 contacts the end of the fixed tubular sleeve 81, at which point the pin... The end face of the rod 86 is flush with the inner wall of the blocking ring sleeve 6 to prevent disassembly from being hindered by exceeding the limit. At this time, simply rotate the blocking ring sleeve 6 in the opposite direction. The inner wall of the blocking ring sleeve 6 applies pressure to the ball 24, forcing the ball 24 to retract into the cavity 21. This makes it easy and convenient to disassemble the blocking ring sleeve 6. The ball 24 can reduce friction and extend the service life of the component. The design of multiple sets of arc-shaped pressing plates 84 is in a ring shape, which makes it easy to hold and press with one hand during disassembly without pressing each one individually.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lightweight, wear-resistant differential housing, characterized in that, include: A cylindrical shell (1) is provided with an annular mounting base (2) at the top. An annular bushing (3) is inserted into the inner ring of the annular mounting base (2). An annular fixing block (4) is connected to one end of the outer ring of the annular bushing (3). An insertion washer (5) is connected to the lower end of the annular fixing block (4). A threaded hole (51) is provided at one end of the outer side of the insertion washer (5). A blocking annular sleeve (6) is threaded to the outer side of the annular fixing block (4). A through hole (7) is provided at one end of the inner wall of the blocking annular sleeve (6). A pin mechanism (8) is provided at one end of the outer side of the blocking annular sleeve (6). A bolt mounting through groove (9) is provided at one end of the outer side of the annular mounting base (2). A bolt (10) is provided inside the bolt mounting through groove (9). An annular groove (11) is provided above the annular mounting base (2).

2. The lightweight wear-resistant differential housing according to claim 1, characterized in that, The outer side of the annular mounting base (2) has a hole-shaped receiving cavity (21). A spring (22) is fixedly connected to one end of the hole-shaped receiving cavity (21). A sliding block (23) is fixedly connected to one end of the spring (22). The sliding block (23) is adapted to the through hole (7). A ball (24) is movably embedded at one end of the sliding block (23).

3. The lightweight wear-resistant differential housing according to claim 1, characterized in that, The latching mechanism (8) includes: The fixed tubular sleeve (81), spring (82) and movable block (83) are fixedly connected to one end of the outer side of the blocking annular sleeve (6), the spring (82) is fixedly connected to the inside of the fixed tubular sleeve (81), the movable block (83) is slidably connected to the inside of the fixed tubular sleeve (81), and the other end of the spring (82) is fixedly connected to the movable block (83). The arc-shaped pressing plate (84), the connecting plate (85), and the pin (86) are fixedly connected to the front of the movable block (83), the connecting plate (85) is fixedly connected to the bottom of the arc-shaped pressing plate (84), and the pin (86) is fixedly connected to the bottom of the connecting plate (85). The end face of the pin (86) matches the inner wall surface of the blocking annular sleeve (6).

4. A lightweight, wear-resistant differential housing according to claim 1, characterized in that, The inner ring of the annular bushing (3) is fitted with a connecting bearing (12), and the bottom of the cylindrical housing (1) is fixedly connected with a connecting flange (13).

5. A lightweight, wear-resistant differential housing according to claim 1, characterized in that, The threaded hole (51), the through hole (7) and the pin mechanism (8) are arranged in multiple sets. The other end of the bolt (10) passes through the bolt mounting through groove (9) and is threaded to the threaded hole (51). The annular groove (11) is adapted to the insertion washer (5).

6. A lightweight, wear-resistant differential housing according to claim 2, characterized in that, The number of the perforated cavity (21), the spring (22), the sliding block (23) and the ball (24) are all provided in multiple sets. The multiple sets of perforated cavities (21) are symmetrically arranged on the outside of the annular mounting base (2). The sliding block (23) is slidably connected to the perforated cavity (21).

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