Axle housing structure of automobile drive axle

Abstract

The utility model provides an automobile drive axle housing structure which comprises an axle housing body, an expansion housing is arranged in the middle of the axle housing body, a buffer mechanism is arranged on the axle housing body, the buffer mechanism comprises two positioning seat sleeves and an arc-shaped buffer plate, the two positioning seat sleeves are arranged on the axle housing body in a sleeving mode and are close to the two ends, and the arc-shaped buffer plate is arranged on the axle housing body. The two arc-shaped buffer plates are located at the positions, close to the lower portions, of the front sides and the rear sides of the arc-shaped buffer plates correspondingly. According to the utility model, the axle housing is sleeved with the positioning seat sleeves close to the two ends, then the arc-shaped buffer plates are arranged at the positions, close to the lower part, of the front side and the rear side of the axle housing, and the front side, the rear side and the lower part of the axle housing are all in a buffer protection state by axially and elastically connecting the two ends of each arc-shaped buffer plate with the adjacent positioning seat sleeves in a sliding manner; therefore, the buffering protection comprehensiveness of the axle housing is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of drive axle housing technology, specifically to a car drive axle housing structure. Background Technology

[0002] The axle housing is a basic component for mounting the main reducer, differential, half shafts, wheel hubs, and suspension. Its main function is to support and protect the main reducer, differential, and half shafts. At the same time, the axle housing is also one of the main components of the driving system.

[0003] Currently, axle housings are mainly classified into casting and stamping / welding processes based on their manufacturing techniques. Both casting and stamping processes result in axle housings with high strength, while stamping / welding axle housings are lightweight. Both types of axle housings are located at the bottom of the vehicle, thus posing a risk of collision damage. Because the axle housing is a one-piece structure after manufacturing, replacement after damage is difficult and costly. Therefore, there is an urgent need in the market for a drive axle housing with comprehensive self-protection capabilities.

[0004] Therefore, this utility model provides a car drive axle housing structure. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an automobile drive axle housing structure to solve the problems mentioned in the background art. The axle housing structure of this utility model has the function of comprehensive buffer protection of the lower, front and rear sides, which greatly extends the service life of the axle housing structure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vehicle drive axle housing structure, comprising an axle housing, an expansion shell disposed in the middle of the axle housing, and a buffer mechanism disposed on the axle housing. The buffer mechanism includes positioning sleeves and arc-shaped buffer plates. There are two positioning sleeves, which are respectively fitted onto the axle housing and positioned near both ends. There are two arc-shaped buffer plates, which are respectively located at the lower front and rear sides of the arc-shaped buffer plates. The two ends of the arc-shaped buffer plates are elastically slidingly engaged with one side of the adjacent positioning sleeve. The height of the lowest end of the arc-shaped buffer plate is lower than the lowest height of the expansion shell.

[0007] Furthermore, guide sleeves are fixedly connected to both sides of the positioning seat sleeve, and guide shafts are welded to both ends of the arc-shaped buffer plate. The guide shafts are sleeved in adjacent guide sleeves and are in sliding fit. A buffer spring is sleeved on the guide shaft between the arc-shaped buffer plate and the guide sleeve.

[0008] Furthermore, there are two positioning sleeves located on the same side of the positioning sleeve.

[0009] Furthermore, the positioning seat sleeve is a split structure consisting of two grooved covers, each with a guide sleeve on one side. The grooved covers are connected to the bridge housing by bolts.

[0010] Furthermore, the front and rear sides of the bridge housing are fixedly connected to mounting plates near the ends. One side of the mounting plate has a threaded hole, and the two sides of the grooved cover have positioning holes opposite to the threaded hole.

[0011] Furthermore, a protective rubber pad is adhered to the front side of the mounting plate.

[0012] Furthermore, a protective rubber sleeve is fitted onto the arc-shaped buffer plate.

[0013] The beneficial effects of this utility model are as follows:

[0014] In this invention, positioning sleeves are fitted onto the bridge housing near both ends, and then arc-shaped buffer plates are arranged on the front and rear sides of the bridge housing near the bottom. By axially elastically sliding the two ends of the arc-shaped buffer plates to the adjacent positioning sleeves, the front and rear sides and the bottom of the bridge housing are in a buffered and protected state, thereby greatly improving the comprehensiveness of the buffer protection of the bridge housing.

[0015] In this utility model, the positioning seat sleeve is composed of two separate groove-shaped covers, and the two sides of the groove-shaped covers are provided with guide sleeves that slide with the ends of the arc-shaped buffer plate. The two groove-shaped covers are fastened to the bridge housing and then connected by bolts. This arrangement makes the installation and disassembly of the buffer mechanism and the bridge housing more convenient and greatly improves the convenience of later maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an automobile drive axle housing according to the present invention;

[0017] Figure 2 for Figure 1 The main view;

[0018] Figure 3 for Figure 1 A partial view after the explosion.

[0019] In the diagram: 1. Bridge housing; 11. Mounting plate; 111. Threaded hole; 12. Expansion shell; 2. Buffer mechanism; 201. Groove cover; 2011. Positioning hole; 21. Positioning seat sleeve; 211. Guide sleeve; 22. Arc-shaped buffer plate; 221. Guide shaft; 3. Buffer spring; 4. Bolt; 5. Protective rubber pad; 6. Protective rubber sleeve. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Please see Figures 1 to 3 This utility model provides a technical solution: a car drive axle housing structure, including an axle housing 1, an expansion shell 12 is provided in the middle of the axle housing 1, and a transmission gear set is installed inside the expansion shell 12. When in use, the bottom of the expansion shell 12 is the smallest distance from the ground and is also the part that is easy to collide with. A buffer mechanism 2 is provided on the axle housing 1. The function of the buffer mechanism 2 is to provide integrated buffer protection for the entire axle housing 1.

[0022] Specifically, the buffer mechanism 2 includes a positioning sleeve 21 and an arc-shaped buffer plate 22. The arc-shaped buffer plate 22 is made of spring steel. There are two positioning sleeves 21, which are respectively fitted onto the bridge housing 1 and located near both ends. There are two arc-shaped buffer plates 22, which are located at the lower front and rear sides of the arc-shaped buffer plate 22. The lowest end of the arc-shaped buffer plate 22 is lower than the lowest height of the expansion shell 12. At this time, the expansion shell 12 and other parts of the bridge housing 1 on both sides are within the buffer protection range of the arc-shaped buffer plate 22.

[0023] Furthermore, the two ends of the arc-shaped buffer plate 22 are elastically slidingly engaged with one side of the adjacent positioning seat sleeve 21, that is, when the arc-shaped buffer plate 22 is deformed by impact, its two ends will move in opposite directions. The purpose of this setting is to increase the buffer stroke and reduce the impact force.

[0024] Specifically, guide sleeves 211 are fixedly connected to both sides of the positioning seat sleeve 21, and guide shafts 221 are welded to both ends of the arc-shaped buffer plate 22. The guide shafts 221 are fitted inside the adjacent guide sleeves 211 and are in sliding fit. A buffer spring 3 is fitted on the guide shaft 221 between the arc-shaped buffer plate 22 and the guide sleeves 211. When the arc-shaped buffer plate 22 is impacted, it deforms in the direction of the bridge housing 1. At this time, the distance between the two ends of the arc-shaped buffer plate 22 increases, the guide shaft 221 slides along the guide sleeves 211, and the buffer spring 3 is compressed, thereby increasing the buffer stroke and reducing the impact force generated by the collision.

[0025] Furthermore, there are two positioning sleeves 21 located on the same side of the positioning sleeve 21. The purpose of this arrangement is to improve the torsional deformation resistance of the arc-shaped buffer plate 22, so that the arc-shaped buffer plate 22 can play a normal deformation buffering role.

[0026] In addition, the positioning sleeve 21 is a split structure and consists of two slotted covers 201. That is, the two slotted covers 201 are fastened to the bridge housing 1 to form a complete positioning sleeve 21. A guide sleeve 211 is provided on each side of the slotted cover 201. The guide sleeve 211 and the guide shaft 221 are connected by a plug-in connection. The slotted cover 201 is connected to the bridge housing 1 by bolts 4. This arrangement makes the assembly and disassembly of the entire buffer mechanism 2 and the bridge housing 1 more convenient and has the function of separate prefabrication and assembly.

[0027] Furthermore, mounting plates 11 are fixedly connected to the front and rear sides of the bridge housing 1 near the end. The mounting plates 11 and the bridge housing 1 can be integrally formed (cast bridge housing) or welded together (stamped and welded bridge housing). A threaded hole 111 is provided on one side of the mounting plate 11, and positioning holes 2011 opposite to the threaded hole 111 are provided on both sides of the channel cover 201. After the bolts 4 are connected through the positioning holes 2011 and the threaded holes 111, the channel cover 201 can be fastened and fixed to the bridge housing 1. When disassembly is required, the bolts 4 on the channel cover 201 are removed first, and then the channel cover 201 is pushed laterally to disengage the guide sleeve 211 and the guide shaft 221, so that the entire buffer mechanism 2 can be disassembled.

[0028] The mounting plate 11 has a protective rubber pad 5 bonded to its front side. The protective rubber pad 5 is waterproof and prevents water from entering the area between the trough cover 201 and the mounting plate 11. It also has anti-rust properties.

[0029] In this embodiment, a protective rubber sleeve 6 is provided on the arc-shaped buffer plate 22. The function of the protective rubber sleeve 6 is to protect the arc-shaped buffer plate 22 and prevent the arc-shaped buffer plate 22 from rusting due to bumps and scratches.

[0030] Working principle: When the axle housing 1 and the car are traveling at low speed on roads with many obstacles, when an obstacle appears in front of the expansion shell 12, the arc-shaped buffer plate 22 on the front side of the axle housing 1 will first touch the obstacle and deform backward. At the same time, the guide shaft 221 will slide in the guide sleeve 211. At this time, the driver will feel the impact and brake in time. The axle housing 1 will not directly participate in the impact during the whole process, thus extending its service life. When the buffer mechanism 2 is damaged or fails, it can be replaced by removing the bolt 4.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vehicle drive axle housing structure, comprising an axle housing (1), wherein an expansion shell (12) is disposed in the middle of the axle housing (1), and a buffer mechanism (2) is disposed on the axle housing (1), characterized in that, The buffer mechanism (2) includes a positioning seat (21) and an arc-shaped buffer plate (22). There are two positioning seat (21) and they are respectively fitted on the bridge housing (1) and located near both ends. There are two arc-shaped buffer plates (22) and they are respectively located at the lower front and rear sides of the arc-shaped buffer plate (22). The two ends of the arc-shaped buffer plate (22) are elastically slidingly engaged with one side of the adjacent positioning seat (21). The height of the lowest end of the arc-shaped buffer plate (22) is lower than the lowest height of the expansion shell (12).

2. The automobile drive axle housing structure according to claim 1, characterized in that: The positioning seat (21) is fixedly connected to the two sides of the guide sleeve (211), and the two ends of the arc-shaped buffer plate (22) are welded with guide shafts (221). The guide shafts (221) are sleeved in the adjacent guide sleeves (211) and are in sliding fit. A buffer spring (3) is sleeved on the guide shaft (221) between the arc-shaped buffer plate (22) and the guide sleeves (211).

3. The automobile drive axle housing structure according to claim 2, characterized in that: There are two positioning sleeves (21) located on the same side of the positioning sleeve (21).

4. The automobile drive axle housing structure according to claim 3, characterized in that: The positioning seat (21) is a split structure and consists of two grooved covers (201). A guide sleeve (211) is provided on each side of the grooved cover (201). The grooved cover (201) is connected to the bridge housing (1) by bolts (4).

5. The automobile drive axle housing structure according to claim 4, characterized in that: The bridge housing (1) is fixedly connected to the front and rear sides with mounting plates (11) near the end. A threaded hole (111) is provided on one side of the mounting plate (11), and positioning holes (2011) opposite to the threaded hole (111) are provided on both sides of the groove cover (201).

6. The automobile drive axle housing structure according to claim 5, characterized in that: The front side of the mounting plate (11) is bonded with a protective pad (5).

7. The automobile drive axle housing structure according to claim 1, characterized in that: The arc-shaped buffer plate (22) is fitted with a protective rubber sleeve (6).

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