Aluminum alloy noise reduction and shock absorption shell for differential

Abstract

The utility model provides a kind of aluminium alloy noise reduction damping shell for differential, it is related to differential shell technical field, comprising: shell mechanism, the both ends of shell mechanism are connected with end cover mechanism;The shell mechanism includes differential housing, the both ends of differential housing are equipped with mounting groove, the inside of two the mounting groove is provided with sealing ring, the outer surface wall of differential housing is respectively equipped with ring type reinforcing rib and axial damping rib;The differential housing includes a group of aluminium alloy base plate.In the utility model, by adopting the composite shell wall design of double-layer aluminium alloy base plate and soundproof layer, adsorb sound wave and block noise transmission, the inner wall of inside aluminium alloy base plate is coated with damping coating, absorbs vibration response, then ring type reinforcing rib and axial damping rib are designed on the outer surface of differential housing, both are set in mesh, disperse vibration energy, reduce the transmission of noise when running, improve the tranquility of vehicle driving.

Description

Technical Field

[0001] This utility model relates to the field of differential housing technology, and in particular to an aluminum alloy noise reduction and vibration damping housing for differentials. Background Technology

[0002] A car differential is a mechanism that enables the left and right (or front and rear) drive wheels to rotate at different speeds. The differential housing acts as a "protective cover" for the differential, enclosing components such as planetary gears and half-shaft gears to prevent dust and moisture from entering. It also stores lubricating oil and assists in heat dissipation, mainly serving to protect and secure the gear set.

[0003] In the existing technology, the differential housing is made of cast iron. Cast iron has high vibration transmission efficiency. When the differential is working, the meshing impact of the planetary gears and half-shaft gears and the vibration generated by the bearing rotation will be directly transmitted to the vehicle body through the housing, causing obvious resonance. Moreover, the meshing noise and vibration noise can easily radiate outward through the housing, affecting the quietness of the vehicle. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that in the existing technology, the differential housing is made of cast iron. Cast iron has high vibration transmission efficiency. When the differential is working, the meshing impact of the planetary gears and half-shaft gears and the vibration generated by the bearing rotation will be directly transmitted to the vehicle body through the housing, causing obvious resonance. Moreover, the meshing noise and vibration noise can easily radiate outward through the housing, affecting the quietness of the vehicle. Therefore, an aluminum alloy noise reduction and vibration damping housing for differential is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: It includes a housing mechanism, with end cap mechanisms connected to both ends of the housing mechanism; the housing mechanism includes a differential housing, with sealing grooves at both ends of the differential housing, and sealing rings provided inside the two sealing grooves; the outer wall of the differential housing is respectively equipped with annular reinforcing ribs and axial damping ribs; the differential housing includes a set of aluminum alloy substrates, with a sound insulation layer between the set of aluminum alloy substrates, a damping coating on the inner wall of the inner aluminum alloy substrate, and a reinforcing coating on the outer wall of the outer aluminum alloy substrate.

[0006] Preferably, the outer wall of the differential housing is fixedly provided with an output port, and one end of the output port is provided with a first oil seal.

[0007] Preferably, the outer wall of the differential housing is provided with two sets of first pads, both ends of the differential housing are provided with a set of connecting holes, and the inner wall of the differential housing is provided with a set of bearing mounting grooves.

[0008] Preferably, the end cap mechanism includes an end cap body, and a set of connecting rods is fixedly installed on one side of the end cap body, with a shock-absorbing pad installed at one end of each set of connecting rods.

[0009] Preferably, a half-shaft connection port is provided on one side of the end cap body, a second oil seal is installed at one end of the half-shaft connection port, and a fixing ring is sleeved on the outer wall of the half-shaft connection port.

[0010] Preferably, a set of second bait blocks is fixedly installed on the outer wall of the end cap body, and a spacer is installed on one side of each set of second bait blocks. A connecting bolt is inserted through the interior of each set of spacers and second bait blocks.

[0011] Preferably, the connecting rod is inserted into the connecting hole, and the connecting bolt is threadedly connected to the second bait block and the first bait block.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, by adopting a composite shell wall design of double-layer aluminum alloy substrate and sound insulation layer, sound waves are absorbed and noise transmission is blocked. A damping coating is applied to the inner wall of the inner aluminum alloy substrate to absorb vibration response. Furthermore, a ring-shaped reinforcing rib and an axial damping rib are designed on the outer surface of the differential housing. The two are arranged in a mesh to disperse vibration energy, reduce the transmission of noise during operation, and improve the quietness of vehicle driving.

[0013] 2. In this utility model, by adopting a soft connection, an oil seal is set at the connection between the differential housing and the output shaft and half shaft, and a sealing gasket is set at the connection between the housing and the end cover, which absorbs and weakens vibration, reduces the transmission of vibration, and realizes the vibration reduction and noise reduction function of the differential housing. Attached Figure Description

[0014] Figure 1 A perspective view of an aluminum alloy noise reduction and vibration damping housing for a differential is provided for this utility model; Figure 2 A cross-sectional view of an aluminum alloy noise reduction and vibration damping housing for a differential is provided for this utility model; Figure 3 This utility model provides an exploded view of the housing mechanism in an aluminum alloy noise reduction and vibration damping housing for a differential. Figure 4 This utility model proposes an aluminum alloy noise reduction and vibration damping housing for a differential. Figure 2 Enlarged view of point A in the middle; Figure 5 This utility model presents a perspective view of the end cover mechanism of an aluminum alloy noise reduction and vibration damping housing for a differential.

[0015] Legend: 1. Housing Mechanism; 101. Differential Housing; 1011. Aluminum Alloy Base Plate; 1012. Sound Insulation Layer; 1013. Damping Coating; 1014. Reinforcing Coating; 102. Sealing Groove; 103. Sealing Ring; 104. Output Port; 105. First Oil Seal; 106. First Bait Block; 107. Ring-shaped Reinforcing Rib; 108. Axial Vibration Damping Rib; 109. Connecting Hole; 110. Bearing Mounting Groove; 2. End Cover Mechanism; 201. End Cover Body; 202. Connecting Rod; 203. Vibration Damping Pad; 204. Half-shaft Connecting Port; 205. Second Oil Seal; 206. Retaining Ring; 207. Second Bait Block; 208. Spacer; 209. Connecting Bolt. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1: As Figures 1-5 As shown, this utility model provides an aluminum alloy noise reduction and vibration damping housing for a differential, comprising: a housing mechanism 1, with end cap mechanisms 2 connected to both ends of the housing mechanism 1; the housing mechanism 1 includes a differential housing 101, with sealing grooves 102 at both ends of the differential housing 101, and sealing rings 103 provided inside the two sealing grooves 102; the outer wall of the differential housing 101 is respectively equipped with annular reinforcing ribs 107 and axial damping ribs 108; the differential housing 101 includes a set of aluminum alloy substrates 1011, with a sound insulation layer 1012 provided between the set of aluminum alloy substrates 1011; the inner wall of the inner aluminum alloy substrate 1011 is provided with a damping coating 1013, and the outer wall of the outer aluminum alloy substrate 1011 is provided with a reinforcing coating 1014.

[0019] The overall effect of Embodiment 1 is that, by adopting a multi-layer composite structure, the differential housing 101 includes two aluminum alloy substrates 1011, which provide structural support and ensure the structural strength of the differential housing 101. A sound insulation layer 1012 is provided between the two aluminum alloy substrates 1011. The sound insulation layer 1012 is made of polyurethane foam material to absorb sound waves. The inner wall of the inner aluminum alloy substrate 1011 is provided with a damping coating 1013 to absorb vibration energy. The outer wall of the outer aluminum alloy substrate 1011 is provided with a reinforcing coating 1014 to improve the wear resistance and corrosion resistance of the material. This structure facilitates the improvement of the overall noise reduction capability of the differential housing 101 and reduces noise dispersion. The outer wall of the differential housing 101 is fixedly installed with a ring-shaped reinforcing rib 107 and an axial damping rib 108, which are arranged in a mesh. This structure can disperse vibration energy, avoid local stress concentration, and at the same time extend the vibration transmission path and reduce vibration transmission efficiency.

[0020] Example 2: As Figures 1-5 As shown, an output port 104 is fixedly provided on the outer wall of the differential housing 101, and a first oil seal 105 is provided at one end of the output port 104; two sets of first pads 106 are installed on the outer wall of the differential housing 101, a set of connecting holes 109 are provided at both ends of the differential housing 101, and a set of bearing mounting grooves 110 are provided on the inner wall of the differential housing 101; the end cover mechanism 2 includes an end cover body 201, a set of connecting rods 202 are fixedly installed on one side of the end cover body 201, and a shock-absorbing pad 203 is installed at one end of each set of connecting rods 202; the end cover body 2 A half-shaft connection port 204 is provided on one side of 01. A second oil seal 205 is installed at one end of the half-shaft connection port 204. A fixing ring 206 is sleeved on the outer wall of the half-shaft connection port 204. A set of second bait blocks 207 are fixedly installed on the outer wall of the end cap body 201. A spacer 208 is installed on one side of each set of second bait blocks 207. A connecting bolt 209 is inserted through the interior of each set of spacers 208 and the second bait block 207. A connecting rod 202 is inserted into the interior of the connecting hole 109. The connecting bolt 209 is threadedly connected to the second bait block 207 and the first bait block 106.

[0021] The overall effect of Embodiment 2 is as follows: by connecting the end cover mechanism 2 to both ends of the housing mechanism 1, and by disassembling the end cover mechanism 2, the core components of the differential are installed inside the housing mechanism 1; when connecting the differential housing 101 to the end cover body 201, the connecting rod 202 is inserted into the connecting hole 109, and the connecting bolt 209 is threadedly connected to the second bait 207 and the first bait 106 to fix the connection. The connection part is filled and blocked by the sealing ring 103 and the spacer 208 to absorb vibration, reduce the transmission of vibration, and avoid noise generated by the rigid connection of the connection part. The output port 104 on the outer wall of the differential housing 101 and the half shaft connection port 204 on the outer wall of the end cover body 201 are respectively equipped with the first oil seal 105 and the second oil seal 205 to improve the sealing performance when connected to the output shaft and half shaft and increase the preload of the connection; and the fixing ring 206 is sleeved on the outer wall of the two half shaft connection ports 204 to facilitate installation and fixation.

[0022] Working principle: In use, the device connects end cap mechanisms 2 to both ends of the housing mechanism 1. By disassembling the end cap mechanisms 2, the core components of the differential are installed inside the housing mechanism 1. The differential housing 101 is made of a multi-layer composite structure, including two aluminum alloy substrates 1011. The two aluminum alloy substrates 1011 provide structural support and ensure the structural strength of the differential housing 101. A sound insulation layer 1012 is provided between the two aluminum alloy substrates 1011. The sound insulation layer 1012 is made of polyurethane foam material to absorb sound waves. The inner aluminum alloy substrate... The inner wall of plate 1011 is provided with a damping coating 1013 to absorb vibration energy, and the outer wall of the aluminum alloy base plate 1011 is provided with a reinforcing coating 1014 to improve the wear resistance and corrosion resistance of the material. This structure facilitates the improvement of the overall noise reduction capability of the differential housing 101 and reduces noise dispersion. The outer wall of the differential housing 101 is fixedly installed with ring-shaped reinforcing ribs 107 and axial damping ribs 108, which are arranged in a mesh. This structure can disperse vibration energy, avoid local stress concentration, and at the same time extend the vibration transmission path and reduce vibration transmission efficiency. When connecting the differential housing 101 to the end cover body 201, the connecting rod 202 is inserted into the connecting hole 109, and the connecting bolt 209 is threadedly connected to the second bait 207 and the first bait 106 to fix the connection. The connection part is filled and blocked by the sealing ring 103 and the spacer 208 to absorb vibration, reduce the transmission of vibration, and avoid noise generated by the rigid connection of the connection part. The output port 104 on the outer wall of the differential housing 101 and the half shaft connection port 204 on the outer wall of the end cover body 201 are respectively equipped with the first oil seal 105 and the second oil seal 205 to improve the sealing performance when connected to the output shaft and half shaft and increase the preload of the connection. Then, the fixing ring 206 is sleeved on the outer wall of the two half shaft connection ports 204 to facilitate installation and fixation.

[0023] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An aluminum alloy noise-reducing and vibration-damping housing for a differential, characterized in that, include: The housing mechanism (1) has end cap mechanisms (2) connected to both ends of the housing mechanism (1). The housing mechanism (1) includes a differential housing (101), and both ends of the differential housing (101) are provided with sealing grooves (102). Both sealing grooves (102) are provided with sealing rings (103). The outer wall of the differential housing (101) is respectively equipped with ring-shaped reinforcing ribs (107) and axial damping ribs (108). The differential housing (101) includes a set of aluminum alloy substrates (1011), a sound insulation layer (1012) is provided between the set of aluminum alloy substrates (1011), a damping coating (1013) is provided on the inner wall of the inner aluminum alloy substrate (1011), and a reinforcing coating (1014) is provided on the outer wall of the outer aluminum alloy substrate (1011).

2. The aluminum alloy noise-reducing and vibration-damping housing for a differential according to claim 1, characterized in that: An output port (104) is fixedly provided on the outer wall of the differential housing (101), and a first oil seal (105) is provided at one end of the output port (104).

3. The aluminum alloy noise-reducing and vibration-damping housing for a differential according to claim 1, characterized in that: Two sets of first bait blocks (106) are installed on the outer wall of the differential housing (101). A set of connecting holes (109) are opened at both ends of the differential housing (101). A set of bearing mounting grooves (110) is opened on the inner wall of the differential housing (101).

4. The aluminum alloy noise reduction and vibration damping housing for a differential according to claim 3, characterized in that: The end cap mechanism (2) includes an end cap body (201), and a set of connecting rods (202) are fixedly installed on one side of the end cap body (201). A shock-absorbing pad (203) is installed at one end of each set of connecting rods (202).

5. The aluminum alloy noise-reducing and vibration-damping housing for a differential according to claim 4, characterized in that: A half-shaft connection port (204) is provided on one side of the end cap body (201), a second oil seal (205) is installed at one end of the half-shaft connection port (204), and a fixing ring (206) is sleeved on the outer wall of the half-shaft connection port (204).

6. The aluminum alloy noise-reducing and vibration-damping housing for a differential according to claim 4, characterized in that: A set of second bait blocks (207) is fixedly installed on the outer wall of the end cap body (201). A septum (208) is installed on one side of each set of second bait blocks (207). A connecting bolt (209) is inserted through the interior of each set of septum (208) and second bait block (207).

7. The aluminum alloy noise-reducing and vibration-damping housing for a differential according to claim 6, characterized in that: The connecting rod (202) is inserted into the connecting hole (109), and the connecting bolt (209) is threadedly connected to the second bait block (207) and the first bait block (106).

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