Rear axle shell with buffer mounting structure

Abstract

The utility model relates to the field of automobile structures, and discloses a rear axle housing with a buffer installation structure, which comprises a rear axle housing body and the buffer installation structure, the buffer installation structure comprises a split type plate support and a damping support, the split type plate support comprises an upper support plate and a lower fastening plate, the upper support plate and the lower fastening plate are respectively and fixedly arranged on an extension section, and the damping support is fixedly arranged on the rear axle housing body. The width of the contact section of the upper supporting plate and the lower fastening plate with the extension section is smaller than or equal to the width of the plate spring, and the damping support is detachably installed on the lower fastening plate. Through the design of the buffer mounting structure, the requirement for the length of the extension section is reduced, the workload of designers is reduced, the design cost is reduced, meanwhile, a production line and a mold do not need to be specially arranged, the extension section of the produced rear axle shell can be adapted to an improved rear axle only by using an original production line and trimming the extension section, and therefore the production cost is reduced; in addition, the formed automobile can be well matched with common accessories in the market, and the use and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of automobile structures, in particular to a rear axle housing with a buffer mounting structure. Background Art

[0002] With the development of the automotive industry, vehicle handling performance and weight control are receiving more and more attention. Reducing the width of the rear axle of a car can not only improve the flexibility of the vehicle, but also optimize the weight distribution of the vehicle, thereby improving the overall handling and fuel economy. The rear axle of a car is an important component connecting the engine power output and the wheels. Its design has a significant impact on the overall performance of the vehicle. The width of the rear axle of a car is closely related to the length of the rear axle housing. Figure 1 、 Figure 2 As shown, the rear axle housing includes an enlarged section 101 and an extended section 102, and the buffer structure is installed on the extended section 102. The buffer structure includes a leaf spring 201 and a shock absorber 202, wherein the enlarged section 101 is mainly used to enhance the anti-bending performance of the rear axle and install the corresponding transmission structure to ensure that the rear axle is not easily deformed when subjected to a large torque, and the extended section 102 is mainly used to install the buffer structure and other accessories of the suspension system. When the width of the rear axle of the car is reduced, the rear axle housing of the car will also become shorter accordingly. When the enlarged section 101 changes, it means that the transmission structure of the entire rear axle needs to be redesigned, and it cannot be adapted to the existing rear axle accessories on the market, which increases the use and maintenance costs. In order to reduce design and production costs, the conventional solution is to shorten the extension section 102 of the rear axle housing to adapt to the change in the shortening of the rear axle of the automobile. However, the conventional buffer structure includes a leaf spring 201 and a shock absorber 202, and both the leaf spring 201 and the shock absorber 202 need to be installed on the extension section 102. There are certain requirements for the length of the extension section 102, which cannot flexibly adapt to the change in the length of the axle housing caused by the change in wheelbase. Therefore, the existing square tube axle is limited in the length change of the extension section 102 to adapt to the shape of the mounting bracket of the leaf spring 201. As a result, the length of the extension section 102 can only increase with the change in wheelbase, which cannot adapt to the current development trend of narrowing the width of the rear axle of automobiles. Utility Model Content

[0003] The utility model aims to provide a rear axle housing with a buffer installation structure to adapt to the trend of reducing the width of automobile rear axles.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solution: a rear axle housing with a buffer mounting structure, comprising a rear axle housing body and a buffer mounting structure, the buffer mounting structure comprising a split plate support and a shock-absorbing bracket, the split plate support comprising an upper support plate and a lower fastening plate, the upper support plate and the lower fastening plate are respectively fixedly arranged on the extension section, the width of the contact section between the upper support plate and the lower fastening plate and the extension section is less than or equal to the width of the leaf spring, and the shock-absorbing bracket is detachably mounted on the lower fastening plate.

[0005] The beneficial effects of this solution are: 1. For design, this solution reduces the requirements for the length of the extension section through the design of the buffer mounting structure, so that designers only need to shorten the length of the extension section to reduce the width of the rear axle without changing the expanded section, thus eliminating the need to redesign related accessories, reducing the workload of designers and reducing design costs; 2. For production, there is no need to set up special production lines and molds. It is only necessary to use the original production line to trim the extension section of the produced rear axle housing to adapt to the improved rear axle, thereby reducing production costs; 3. For users, the molded car can be well adapted to common accessories on the market without the need to use special accessories, reducing use and maintenance costs.

[0006] Furthermore, the buffer mounting structure also includes a riding bolt, a buffer structure is installed on the buffer mounting structure, the buffer structure includes a leaf spring, the leaf spring is placed on the upper support plate, and the riding bolt spans the leaf spring and is fixedly connected to the lower fastening plate.

[0007] Beneficial effect: The leaf spring is placed on the upper support plate, and the riding bolt crosses the leaf spring and is fixedly connected to the lower fastening plate, which means

[0008] Furthermore, the shock-absorbing bracket includes a mounting plate and a connecting pin, the mounting plate is fixedly connected to the lower fastening plate, and the buffer structure also includes a shock absorber, which is rotatably connected to the connecting pin.

[0009] Beneficial effect: The additional shock absorbers are used to improve the shock absorption performance of the rear axle. At the same time, because the shock absorber mounting bracket is fixedly installed on the fastening plate, the requirement for the length of the rear axle can be reduced.

[0010] Furthermore, the connecting pin includes a connecting section, a mounting section and a fastening section, the connecting section is fixedly connected to the mounting plate, the mounting section is adapted to the shock absorber, and the fastening section is provided with a fastening bolt.

[0011] Furthermore, the diameters of the connecting section, the mounting section and the fastening section decrease in sequence.

[0012] Beneficial effect: By utilizing the special setting of the connecting pin, after the shock absorber is installed, one end abuts against the connecting section and the other end abuts against the fastening bolt, thereby limiting the installation position of the shock absorber and reducing the axial movement of the shock absorber.

[0013] Furthermore, a notch is provided between the mounting plate and the connecting section.

[0014] Beneficial effect: The setting of the notch can reduce the overall weight of the shock-absorbing bracket on the one hand, and avoid interference between the mounting plate and the shock absorber, which would affect the rotation of the shock absorber on the connecting pin on the other hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1The rear axle housing and leaf spring mounting box mentioned in the background technology;

[0016] Figure 2 for Figure 1 Front view of

[0017] Figure 3 This is a schematic diagram of the structure of the leaf spring and the split plate support of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the vibration damper and vibration damping bracket of the utility model;

[0019] Figure 5 This is a schematic diagram of the assembly of the rear axle housing and the split plate support of the utility model;

[0020] Figure 6 A three-dimensional diagram of the rear axle housing of the present invention;

[0021] Figure 7 This is a three-dimensional diagram of the rear axle housing and the buffer structure after assembly. DETAILED DESCRIPTION

[0022] The following is further described in detail through specific implementation methods:

[0023] The figure marks in the drawings of the specification include: expansion section 101, extension section 102, leaf spring 201, shock absorber 202, leaf spring mounting structure 21, upper support plate 211, lower fastening plate 212, riding bolt 213, pressure plate 214, vibration damping bracket 22, mounting plate 221, connecting shaft 222.

[0024] Example

[0025] The embodiment is basically as shown in the attached Figure 3-6 As shown, Figure 3-6 A rear axle housing with a buffer mounting structure is shown, such as Figure 6 As shown, it includes a rear axle housing body and a buffer mounting structure, a buffer structure is installed on the buffer mounting structure, in this embodiment, the buffer structure includes a leaf spring and a shock absorber, refer to Figure 5 、 Figure 6 As shown, the rear axle housing body includes an expanded section 101 and an extended section 102. The rear axle housing body in this embodiment is basically the same as the square tube bridge in the prior art. The difference is that, referring to Figure 2 、 Figure 5 In this embodiment, the left extension section of the square tube rear axle is partially cut off, so that the length of the square tube rear axle is adapted to the car after the rear axle is narrowed.

[0026] The buffer mounting structure includes a leaf spring mounting structure 21 and a vibration-damping bracket 22. The leaf spring mounting structure 21 is used to fix the leaf spring on the extension section, and the vibration-damping bracket is used to install the shock absorber.

[0027] like Figure 3 As shown, the leaf spring mounting structure 21 includes a split plate support, a riding bolt 213 and a pressure piece. The split plate support includes an upper support plate 211 and a lower fastening plate 212. Both the upper support plate 211 and the lower fastening plate 212 are provided with positioning slots. The width of the positioning slots is adapted to the width of the housing. Figure 3 As shown, the width of the lower fastening plate 212 on both sides is greater than the width in the middle, and first mounting holes are provided on both sides, so that the position of the first mounting holes is located outside the positioning slot to avoid interference with the expanded section 101, so that the lower fastening plate 212 can be as close to the expanded section 101 as possible, reducing the length requirement of the extension section 102. When installing, as shown in FIG. Figure 5 As shown, the upper support plate 211 and the lower fastening plate 212 are placed on the upper and lower sides of the shell respectively, so that the shell extension section 102 is located in the limit slot, and the positioning slot is used to slide on the rear axle housing so that the center lines of the upper support plate 211 and the lower fastening plate 212 are located in the same vertical plane, and then the upper support plate 211 and the lower fastening plate 212 are fixed to the extension section 102 by welding.

[0028] like Figure 4 As shown, the vibration damping bracket 22 includes a mounting plate 221 and a connecting pin. The mounting plate 221 is welded to the connecting pin. The connecting pin includes a connecting section, a mounting section and a fastening section. The connecting section, the mounting section and the fastening section are bamboo shoot-shaped structures with successively decreasing diameters. The connecting section is fixedly connected to the mounting plate 221. The mounting section is adapted to the shock absorber 202. The fastening section is provided with a fastening bolt. A mounting hole is provided on the mounting plate 221. A notch is reserved between the mounting hole and the mounting end of the connecting pin to avoid interference between the shock absorber 202 and the mounting plate 221 during the installation process, which affects the installation work of the shock absorber 202.

[0029] The specific implementation process is as follows:

[0030] Reference Figure 5 As shown, first, according to the designed length of the rear axle of the automobile, the extended section of the rear axle housing body is trimmed accordingly so that the rear axle housing body is adapted to the designed rear axle of the automobile;

[0031] Secondly, clamp the upper support plate 211 and the lower fastening plate 212 to the corresponding area of the shortened rear axle housing, ensure that the center lines of the upper support plate 211 and the lower fastening plate 212 are in the same vertical plane, and fix the upper support plate 211 and the lower fastening plate 212 to the extension section 102 of the rear axle housing by welding to form a Figure 4 The structure shown;

[0032] Then, place the leaf spring 201 on the upper support plate 211 in sequence, and place the pressure plate 214 on top of the leaf spring 201, ensuring that the positioning hole of the leaf spring 201 is coaxial with the positioning hole of the upper support plate 211, and the edge line of the leaf spring 201 and the side of the upper support plate 211 are in the same plane;

[0033] Next, the open end of the riding bolt 213 is passed through the pressure plate 214, the leaf spring 201, the upper supporting plate 211, and the lower fastening plate 212 in sequence, ensuring that the free end of the riding bolt 213 passes through the mounting hole provided in the lower fastening plate 212 and the mounting hole provided in the mounting plate 221 of the vibration-damping bracket 22. Thus, the leaf spring 201 and the vibration-damping bracket 22 are fixed to the extension section 102 by the riding bolt 213, completing the installation of the leaf spring 201 and the vibration-damping bracket 22.

[0034] Finally, the shock absorber 202 is rotated and set on the connecting pin to obtain the following Figure 7 The assembly structure of the rear axle housing with a buffer mounting structure and the buffer structure is shown.

[0035] The above is only an embodiment of the present invention, and common knowledge such as the well-known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that the technical means for solving the problems in the above-mentioned embodiments of the present invention can be used in combination to solve multiple technical problems at the same time. For those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A rear axle housing with a buffer mounting structure, characterized in that: It includes a rear axle housing body and a buffer mounting structure, the buffer mounting structure includes a split plate support and a shock-absorbing bracket, the split plate support includes an upper support plate and a lower fastening plate, the upper support plate and the lower fastening plate are respectively fixed on the extension section, the width of the contact section between the upper support plate and the lower fastening plate and the extension section is less than or equal to the width of the leaf spring, and the shock-absorbing bracket can be detachably mounted on the lower fastening plate.

2. The rear axle housing with a buffer mounting structure according to claim 1, characterized in that: Both the upper supporting plate and the lower fastening plate are provided with positioning slots, and the positioning slots are adapted to the width of the extension section.

3. The rear axle housing with a buffer mounting structure according to claim 2, characterized in that: The buffer mounting structure also includes a riding bolt. A buffer structure is installed on the buffer mounting structure. The buffer structure includes a leaf spring. The leaf spring is placed on the upper supporting plate. The riding bolt spans the leaf spring and is fixedly connected to the lower fastening plate.

4. The rear axle housing with a buffer mounting structure according to claim 3, characterized in that: The shock-absorbing bracket includes a mounting plate and a connecting pin, the mounting plate is fixedly connected to the lower fastening plate, and the buffer structure also includes a shock absorber, which is rotatably connected to the connecting pin.

5. The rear axle housing with a buffer mounting structure according to claim 4, characterized in that: The connecting pin includes a connecting section, an installation section and a fastening section. The diameters of the connecting section, the installation section and the fastening section decrease successively. The connecting section is fixedly connected to the mounting plate, the installation section is adapted to the shock absorber, and the fastening section is provided with a fastening bolt.

6. The rear axle housing with a buffer mounting structure according to claim 5, characterized in that: A notch is provided between the mounting plate and the connecting section.

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