Rear wheel-side reduction gear assembly for off-road vehicles

Abstract

This utility model relates to the field of reducer assembly technology, and more particularly to a rear wheel-side reducer assembly for off-road vehicles. Its technical solution includes: a reducer body, on which an upper housing is provided, the upper housing being fixed to the reducer body by mounting bolts and mounting nuts; fastening mechanisms are provided at both ends of the reducer body, the fastening mechanisms being used to connect and fix the reducer body and the upper housing; the fastening mechanism includes a mounting component, a locking component, a pressing component, and a resetting component, the mounting component connecting the reducer body and the upper housing, the locking component securing the mounting bolts and mounting nuts, the pressing component pressing the locking component, and the resetting component resetting the locking component and limiting the pressing component. This utility model meets the requirements of reducer assembly use, providing secondary fixing and limiting at the connection between the reducer body and the upper housing through the fastening mechanisms during use, preventing loosening and potential safety hazards.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer assembly technology, specifically to a rear wheel-side speed reducer assembly for off-road vehicles. Background Technology

[0002] As a special type of vehicle designed specifically for off-road scenarios, off-road vehicles, with their core features such as non-load-bearing body, four-wheel drive system, high ground clearance chassis, high-grip tires, high-mounted exhaust pipe, high horsepower output and sturdy bumpers, can easily cope with various rugged and complex terrain environments.

[0003] In the powertrain system of off-road vehicles, the rear wheel-side reduction gear assembly plays a crucial role: it is responsible for reducing and increasing the speed and torque transmitted by the main reducer of the drive axle before precisely delivering it to the wheels. This process not only effectively improves transmission efficiency but also utilizes the reaction force of the ground adhesion to provide the vehicle with strong driving force. At the same time, its structural design can significantly reduce the stress load on the front-end transmission components, ensuring stable system operation.

[0004] However, most current mainstream reducer assemblies rely on bolts and nuts for assembly. Since off-road vehicles frequently travel on bumpy, harsh roads, this single threaded connection structure is highly susceptible to loosening or even detachment under prolonged high-frequency vibration. This can lead not only to transmission system failure but also potentially serious safety accidents. Therefore, there is an urgent need to optimize and improve the existing assembly structure. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a rear wheel-side reduction gear assembly for off-road vehicles, solving the problems mentioned in the background art.

[0006] The solution to the above-mentioned technical problems provided by this utility model is as follows:

[0007] A rear wheel-side speed reducer assembly for off-road vehicles includes a speed reducer body, on which an upper housing is provided. The upper housing is fixed to the speed reducer body by mounting bolts and mounting nuts.

[0008] Both ends of the reducer body are provided with fastening mechanisms, which are used to connect and fix the reducer body and the upper housing.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the fastening mechanism includes an installation component, a locking component, a pressing component, and a reset component. The installation component is used to connect the reducer body and the upper housing. The locking component is used to lock the mounting bolts and mounting nuts. The pressing component is used to press the locking component. The reset component is used to reset the locking component and limit the pressing component.

[0011] The beneficial effects of adopting the above-mentioned further solutions are:

[0012] By subdividing the fastening mechanism into mounting components, clamping components, pressing components, and reset components, a clear division of functions and coordinated operation are achieved. The mounting components provide the mounting base for the entire fastening mechanism; the clamping components can specifically fix the mounting bolts and nuts; the pressing components enhance the clamping effect; and the reset components ensure the reusability of the clamping components and limit the rotation of the pressing components through the reset force. This improves the stability of the connection between the reducer body and the upper housing, effectively preventing loosening of the connection due to vibration and other factors when driving on complex off-road conditions, extending the service life of the assembly, and improving driving safety.

[0013] Furthermore, the mounting assembly includes a mounting housing, which is sleeved at the connection between the reducer body and the upper housing. A fixing screw is threadedly installed inside the mounting housing, and the fixing screw is threadedly installed at the connection between the reducer body and the upper housing. A fixing nut is threadedly installed on the fixing screw.

[0014] The beneficial effects of adopting the above-mentioned further solutions are:

[0015] The mounting housing, fitted onto the connection point, provides external protection, reducing the erosion of the connection structure by dust, mud, and other impurities. The fixing screws connect to the mounting housing, reducer body, and upper housing via threads, forming a multi-threaded fixing structure with the locking action of the fixing nuts. This enhances the reliability and stability of the mounting component connection, ensuring a stable connection between the reducer body and upper housing even under significant impact and torque, adapting to the harsh driving environment of off-road vehicles.

[0016] Furthermore, the locking assembly includes a limiting block, and a silicone pad is fitted to the inner wall of the limiting block.

[0017] The beneficial effects of adopting the above-mentioned further solutions are:

[0018] The limiting block can engage with the mounting bolts and nuts, effectively limiting their movement and preventing them from rotating and loosening during vibration. The silicone pad on the inner wall increases the friction between the limiting block and the bolts / nuts, further enhancing the locking effect. Furthermore, the silicone material's good elasticity and cushioning properties prevent hard contact between the limiting block and the bolts / nuts, reducing mutual wear.

[0019] Furthermore, the extrusion assembly includes an extrusion screw, which is threadedly installed in the mounting housing. A knob is installed on the extrusion screw, and the extrusion screw extrudes and limits the positioning block.

[0020] The beneficial effects of adopting the above-mentioned further solutions are:

[0021] The extrusion screw can be rotated by the knob, and the screw thread transmission makes the extrusion screw generate a continuous and stable extrusion force on the limit block, thereby enhancing the tightness of the fit between the limit block and the mounting bolt and mounting nut, further improving the locking effect and effectively preventing loosening caused by vibration.

[0022] Furthermore, the reset assembly includes a reset spring, which is installed inside the mounting housing and fixedly connected to the limiting block. The reset spring is sleeved on the fixing nut.

[0023] The beneficial effects of adopting the above-mentioned further solutions are:

[0024] When the limit stop needs to be released, the return spring uses its elastic restoring force to push the limit stop back to its original position, separating it from the mounting bolt and nut. This facilitates disassembly or adjustment of the bolt and nut, improving operational convenience. Simultaneously, the return spring consistently applies a certain restoring force to the limit stop, compressing the clamping screw and preventing it from rotating during use. Furthermore, the return spring, fitted onto the fixing nut, not only guides the spring, preventing it from shifting or twisting, but also reduces interference between the spring and other components, ensuring reliable operation of the reset function.

[0025] This utility model provides a rear wheel-side reduction gear assembly for off-road vehicles. It has the following advantages:

[0026] The mounting components in the fastening mechanism are based on the mounting housing and combine with the fixing screw and fixing nut to form multiple fixation. This not only provides a certain degree of protection to the connection parts from the outside, reducing the corrosion of dust, mud and other impurities that are common when off-road vehicles are driving, but also ensures that the reducer body and the upper housing can still maintain a stable connection when subjected to severe impacts and torques under complex road conditions through rigid fixation of threaded connections.

[0027] The limiting block, through the combined action of the flexible contact of the silicone pad and the mechanical limiting, tightly fits the mounting bolt and mounting nut. The continuous squeezing force generated by the extrusion screw under the knob operation further enhances the tightness of this fit, effectively preventing the components from loosening due to vibration.

[0028] The return spring not only pushes the limit block to reset when needed, making it convenient to disassemble or adjust the bolts and nuts, but its continuous return force also forms a reverse constraint on the compression screw, preventing it from rotating accidentally. At the same time, the layout of the spring sleeve on the fixed nut ensures the stability of its own operation and reduces interference with other components. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0030] In the attached diagram:

[0031] Figure 1 This is a front view schematic diagram of the present invention;

[0032] Figure 2 This is a schematic diagram of the mounting bolt installation of this utility model;

[0033] Figure 3 This is a side view of the fastening mechanism of this utility model;

[0034] Figure 4 This is a schematic diagram of the installation of the limiting block of this utility model.

[0035] The attached diagram lists the components represented by each number as follows:

[0036] 1. Reducer body; 101. Upper housing; 102. Mounting bolt; 103. Mounting nut; 2. Fastening mechanism; 201. Mounting housing; 202. Fixing screw; 203. Fixing nut; 204. Limiting block; 205. Return spring; 206. Knob; 207. Pressing screw. Detailed Implementation

[0037] 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.

[0038] Please see Figures 1 to 4As shown, the embodiments provided by this utility model are as follows: Example

[0039] The rear wheel side reduction gear assembly for off-road vehicles includes a reduction gear body 1, an upper housing 101 on the reduction gear body 1, and the upper housing 101 is fixed to the reduction gear body 1 by mounting bolts 102 and mounting nuts 103.

[0040] Both ends of the reducer body 1 are provided with fastening mechanisms 2, which are used to connect and fix the reducer body 1 and the upper housing 101.

[0041] The fastening mechanism 2 includes an installation component, a locking component, a pressing component, and a reset component. The installation component connects the reducer body 1 and the upper housing 101. The locking component locks the mounting bolts 102 and mounting nuts 103. The pressing component presses against the locking component. The reset component resets the locking component and limits the pressing component. By refining the fastening mechanism 2 into the installation component, locking component, pressing component, and reset component, clear division of functions and coordinated operation are achieved. The installation component provides the installation base for the entire fastening mechanism 2. The locking component can specifically fix the mounting bolts 102 and mounting nuts 103. The pressing component enhances the locking effect. The reset component ensures the reusability of the locking component and limits the rotation of the pressing component by the reset force, thereby improving the stability of the connection between the reducer body 1 and the upper housing 101. This effectively prevents the connection from loosening due to vibration and other factors when driving on complex road conditions of off-road vehicles, extends the service life of the assembly, and improves driving safety.

[0042] The mounting assembly includes a mounting housing 201, which is fitted onto the connection between the reducer body 1 and the upper housing 101. A fixing screw 202 is threadedly installed inside the mounting housing 201 at the connection between the reducer body 1 and the upper housing 101. A fixing nut 203 is threaded onto the fixing screw 202. The mounting housing 201, fitted onto the connection, provides external protection to the connection area, reducing the erosion of the connection structure by external dust, mud, and other impurities. The fixing screw 202 is threadedly connected to the mounting housing 201, the reducer body 1, and the upper housing 101, forming a multi-threaded fixing structure in conjunction with the locking action of the fixing nut 203. This enhances the reliability and stability of the mounting assembly connection, ensuring that the reducer body 1 and the upper housing 101 maintain a stable connection even under significant impact and torque, adapting to the harsh driving environment of off-road vehicles.

[0043] The locking assembly includes a limiting block 204, whose inner wall is fitted with a silicone pad. The limiting block 204 can engage with the mounting bolt 102 and mounting nut 103, effectively limiting their movement and preventing them from rotating and loosening during vibration. The silicone pad on the inner wall increases the friction between the limiting block 204 and the bolt / nut, further enhancing the locking effect. Furthermore, the silicone material has good elasticity and cushioning properties, preventing hard contact between the limiting block 204 and the bolt / nut and reducing mutual wear.

[0044] The extrusion assembly includes an extrusion screw 207, which is threadedly installed in the mounting housing 201. A knob 206 is installed on the extrusion screw 207. The extrusion screw 207 extrudes and limits the limiting block 204. The extrusion screw 207 can be rotated by the knob 206. The threaded transmission makes the extrusion screw 207 generate a continuous and stable extrusion force on the limiting block 204, thereby enhancing the tightness of the fit between the limiting block 204 and the mounting bolt 102 and the mounting nut 103, further improving the locking effect and effectively preventing loosening caused by vibration.

[0045] The reset assembly includes a reset spring 205, which is installed inside the mounting housing 201 and fixedly connected to the limiting block 204. The reset spring 205 is sleeved on the fixing nut 203. When it is necessary to release the limiting block 204, the reset spring 205 can use its own elastic restoring force to push the limiting block 204 back to its original position, separating the limiting block 204 from the mounting bolt 102 and the mounting nut 103, facilitating the disassembly or adjustment of the bolt and nut and improving operational convenience. Simultaneously, the reset spring 205 always applies a certain reset force to the limiting block 204, which can compress the pressing screw 207 and prevent it from rotating during use. Furthermore, the reset spring 205 sleeved on the fixing nut 203 not only guides the spring, preventing it from shifting or twisting, but also reduces interference between the spring and other components, ensuring the reliable implementation of the reset function.

[0046] Working principle:

[0047] Foundation fixing: First, the upper housing 101 is initially fixed to the reducer body 1 by using mounting bolts 102 and mounting nuts 103, forming the basic connection structure of the assembly.

[0048] Fastening mechanism 2 installation: Fastening mechanism 2 is installed at both ends of the reducer body 1. The installation component in fastening mechanism 2 first plays its role. The mounting housing 201 is sleeved on the connection between the reducer body 1 and the upper housing 101. Then, the fixing screw 202 is installed in sequence at the connection between the mounting housing 201, the reducer body 1 and the upper housing 101 through the thread. Then, the fixing nut 203 is tightened to complete the fixing of the installation component, forming a wrap and multiple threaded fixation of the connection part from the outside.

[0049] Locking preparation: The limiting block 204 in the locking assembly is in a ready-to-work state. The silicone pad on its inner wall is ready for subsequent contact with the mounting bolt 102 and mounting nut 103. The reset spring 205 in the reset assembly is in a natural or slightly compressed state at this time, providing initial support for the limiting block 204.

[0050] Compression locking: By rotating the knob 206 in the compression assembly, the compression screw 207 is driven to rotate within the mounting housing 201. The screw drive causes the compression screw 207 to move toward the limiting block 204 and generate compression force on it. Under the action of compression force, the limiting block 204 adheres to the mounting bolt 102 and mounting nut 103. The silicone pad increases the friction, thereby locking the bolt and nut. At the same time, the return spring 205 is compressed and stores elastic potential energy.

[0051] Continuous limiting and protection: During the operation of the off-road vehicle, the mounting components continuously protect and fix the connection parts. The locking components maintain the limiting of the mounting bolts 102 and mounting nuts 103 under the continuous squeezing force of the squeezing components, preventing them from loosening due to vibration. The elastic force of the return spring 205 acts in the opposite direction on the limiting block 204, thereby limiting the squeezing screw 207 and preventing it from rotating accidentally.

[0052] Reset operation: When it is necessary to disassemble or adjust the mounting bolt 102 and mounting nut 103, rotate the knob 206 in the opposite direction to release the compression screw 207 from the compression of the limit block 204. The reset spring 205 releases its elastic potential energy and pushes the limit block 204 to reset, so that it separates from the mounting bolt 102 and mounting nut 103, which facilitates subsequent operations.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] 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 rear wheel-side speed reducer assembly for an off-road vehicle, comprising a speed reducer body (1), wherein an upper housing (101) is provided on the speed reducer body (1), and the upper housing (101) is fixed to the speed reducer body (1) by mounting bolts (102) and mounting nuts (103), characterized in that: Both ends of the reducer body (1) are provided with fastening mechanisms (2), which are used to connect and fix the reducer body (1) and the upper housing (101).

2. The rear wheel-side reduction gear assembly for off-road vehicles according to claim 1, characterized in that: The fastening mechanism (2) includes an installation component, a locking component, a pressing component, and a reset component. The installation component is used to connect the reducer body (1) and the upper housing (101). The locking component is used to lock the mounting bolt (102) and the mounting nut (103). The pressing component is used to press the locking component. The reset component is used to reset the locking component and limit the pressing component.

3. The rear wheel-side reduction gear assembly for off-road vehicles according to claim 2, characterized in that: The mounting assembly includes a mounting housing (201), which is fitted onto the connection between the reducer body (1) and the upper housing (101). A fixing screw (202) is threadedly installed inside the mounting housing (201). The fixing screw (202) is threadedly installed at the connection between the reducer body (1) and the upper housing (101). A fixing nut (203) is threadedly installed on the fixing screw (202).

4. The rear wheel-side reduction gear assembly for off-road vehicles according to claim 2, characterized in that: The locking assembly includes a limiting block (204), and a silicone pad is fitted to the inner wall of the limiting block (204).

5. The rear wheel-side reduction gear assembly for an off-road vehicle according to claim 4, characterized in that: The extrusion assembly includes an extrusion screw (207), which is threaded into the mounting housing (201). A knob (206) is installed on the extrusion screw (207), and the extrusion screw (207) extrudes and limits the limiting block (204).

6. The rear wheel-side reduction gear assembly for an off-road vehicle according to claim 5, characterized in that: The reset assembly includes a reset spring (205), which is installed inside the mounting housing (201) and fixedly connected to the limiting block (204). The reset spring (205) is sleeved on the fixing nut (203).

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