An electric motor externally mounted axle assembly

Abstract

This utility model relates to the field of axle assembly technology, specifically to a motor-mounted axle assembly, including an axle assembly body, two shafts, wheel hubs, and a motor body. The two shafts are mounted on the axle assembly and connected to a differential lock in the axle assembly body. Wheel hubs are mounted on the surface of the shafts, and the motor body is mounted on the surface of the axle assembly body. It also includes a protective device, comprising two mounting seats mounted on the surface of the axle assembly body. By mounting a buffer portion on the mounting seats, and then connecting a bracket on the protective plate to the buffer portion, and using a buffer spring and locking block, the bracket is mounted on the buffer portion. During driving, the protective plate located below the axle assembly body can effectively intercept flying stones and debris, achieving protective operation. Simultaneously, the buffer portion can cushion and protect the protective plate, reducing the impact force caused by collisions, thereby extending the service life of the protective plate and ensuring the reliability and safety of the entire system.

Description

Technical Field

[0001] This utility model relates to the field of axle assembly technology, and in particular to an external motor-mounted axle assembly. Background Technology

[0002] An external motor axle assembly is a power transmission device in which the drive motor is mounted on the outside of the axle housing via a bracket. The motor reduces and increases torque through a reducer, and then the differential distributes the power to the left and right half-shafts to drive the wheels. However, during vehicle operation, there are often bumps, which cause the leaf springs on the axle to undergo cyclic deformation. This generates alternating stress on the locking components that fix the leaf springs to the axle, causing metal fatigue in the locking components and affecting the vehicle's driving safety.

[0003] Existing technologies, such as CN210526274U, and the aforementioned utility model, involve installing a drive motor on the axle housing and driving the first and second rotating shafts to rotate via a reduction mechanism. This reduces the length of the transmission chain and lowers energy consumption. U-bolts on the axle housing prevent the leaf spring from detaching from the housing, increasing its stability. Rotating the adjusting nut moves the first fixing rod away from the second fixing rod, applying an outward thrust to the two U-bolts, limiting their inward bending and reducing fatigue. This improves the axle's safety performance and effectively solves the problem of cyclic deformation of the leaf springs on the axle, which generates alternating stress on the locking assembly that fixes the leaf springs to the axle, causing metal fatigue and affecting vehicle driving safety.

[0004] While the aforementioned patents have solved the problem of metal fatigue in locking components affecting vehicle driving safety, the bottom of the external motor axle assembly typically lacks an effective protective mechanism after installation. During driving, especially on roads with poor conditions, flying stones, gravel, and other debris can easily directly impact the housing of the motor and its differential. Such frequent impacts not only cause significant physical damage to the housing of the motor and differential, resulting in overall damage and affecting service life. Summary of the Invention

[0005] The purpose of this utility model is to provide an external motor axle assembly, which solves the problem that flying stones, gravel and other debris can easily directly impact the housing of the motor and its differential. Such frequent impacts not only cause significant physical damage to the housing of the motor and differential, resulting in overall damage and affecting service life.

[0006] To achieve the above objectives, this utility model provides an external motor-mounted axle assembly, including an axle assembly body, two shafts, wheel hubs, and a motor body. The two shafts are mounted on the axle assembly and connected to a differential lock in the axle assembly body. Wheel hubs are mounted on the surface of the shafts, and the motor body is mounted on the surface of the axle assembly body. It also includes a protective device.

[0007] The protective device includes two mounting seats installed on the surface of the axle assembly. Each mounting seat has two buffer parts installed on it. A protective plate is provided below the axle assembly. Two brackets are fixedly connected to the surface of the protective plate. The buffer parts are inserted into the inner wall of the brackets. A locking block is slidably connected to the inner wall of the bracket. The locking block is inserted into the inner wall of the buffer part. A return spring is provided between the locking block and the inner wall of the bracket. Through the above components, by installing the buffer parts on the mounting seats, connecting the brackets on the protective plate to the buffer parts, and then using the buffer spring and locking block to install the brackets on the buffer parts, the protective plate located below the axle assembly can effectively intercept flying stones and impurities during driving, achieving protective operation. At the same time, the buffer parts can cushion and protect the protective plate, reducing the impact force caused by collisions, thereby extending the service life of the protective plate and ensuring the reliability and safety of the entire system.

[0008] The protective plate is arranged in an arc shape.

[0009] The buffer unit includes a hollow sleeve mounted on a mounting base by screws. A sliding rod is slidably connected to the inner wall of the hollow sleeve. A buffer airbag is fixedly connected to the side of the sliding rod corresponding to the inner wall of the hollow sleeve. Through the above components, when the protective plate is impacted, the protective plate can move the sliding rod in the hollow sleeve through the bracket, and then compress the buffer airbag to achieve a buffering effect.

[0010] The hollow sleeve has multiple sets of auxiliary springs on its inner wall. The two ends of the multiple sets of auxiliary springs are fixedly connected to the slide rod and the inner wall of the hollow sleeve, respectively. Through the above components, when the slide rod moves in the hollow sleeve, the auxiliary springs can work with the buffer airbag to buffer and improve the buffering effect.

[0011] There are two reset springs, and the two ends of the reset springs are fixedly connected to the inner walls of the locking block and the bracket, respectively.

[0012] The slide rod is fixedly connected to a positioning ring one and a positioning ring two. The positioning ring two is located below the positioning ring one. Through the above components, during the installation process, when the slide rod in the buffer part is inserted into a certain position in the bracket, the positioning ring two can fit against the surface of the bracket to achieve a positioning effect. At the same time, when the protective plate is impacted and moves to a certain position, the positioning ring one can fit against the surface of the hollow sleeve and the mounting base to restrict the movement of the protective plate.

[0013] This utility model discloses an external motor-mounted axle assembly. By installing a buffer unit on a mounting base, and then connecting the bracket on the protective plate to the buffer unit, the bracket is installed on the buffer unit through a buffer spring and a locking block. During driving, the protective plate located below the axle assembly can effectively intercept flying stones and impurities, achieving protective operation. At the same time, the buffer unit can cushion and protect the protective plate, reducing the impact force caused by collisions, thereby extending the service life of the protective plate and ensuring the reliability and safety of the entire system. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall structure of an external motor axle assembly according to an embodiment of this utility model.

[0016] Figure 2 This is an embodiment of an external motor-mounted axle assembly. Figure 1 A schematic diagram of the structure at point A in the middle.

[0017] Figure 3 This is a structural schematic diagram of an external motor-mounted axle assembly according to an embodiment of the present utility model.

[0018] Figure 4 This is a schematic diagram of a partial structure of a motor-mounted axle assembly protection device according to an embodiment of this utility model.

[0019] Figure 5 This is a cross-sectional structural schematic diagram of the buffer section of an external motor-mounted axle assembly according to an embodiment of this utility model.

[0020] 1. Axle assembly; 2. Wheel hub; 3. Motor body; 4. Protective device; 41. Protective plate; 42. Bracket; 43. Mounting seat; 44. Buffer part; 441. Hollow sleeve; 442. Slide rod; 443. Positioning ring one; 444. Positioning ring two; 445. Buffer airbag; 446. Auxiliary spring; 45. Locking block; 46. Return spring; 5. Rotary shaft. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0022] Please see Figures 1-5An external motor axle assembly includes an axle assembly body, two shafts, wheel hubs and a motor body. The two shafts are mounted on the axle assembly and connected to a differential lock (not shown in the figure) in the axle assembly body. Wheel hubs are mounted on the surface of the shafts, and the motor body is mounted on the surface of the axle assembly body. It also includes a protective device.

[0023] Specifically, the protective device includes two mounting seats installed on the surface of the axle assembly. Each mounting seat has two buffer parts installed on it. A protective plate is installed below the axle assembly. Two brackets are fixedly connected to the surface of the protective plate. The protective plate is arc-shaped. The buffer parts are inserted into the inner wall of the brackets. A locking block is slidably connected to the inner wall of the bracket. The locking block is inserted into the inner wall of the buffer part. A return spring is installed between the locking block and the inner wall of the bracket. There are two return springs. The two ends of the return springs are fixedly connected to the locking block and the inner wall of the bracket, respectively.

[0024] In this embodiment: by installing the buffer part on the mounting base, and then connecting the bracket on the protective plate to the buffer part, and then installing the bracket on the buffer part by means of the buffer spring and the locking block, the protective plate located under the axle assembly can effectively intercept flying stones and impurities during driving, thus achieving protective operation. At the same time, the buffer part can buffer and protect the protective plate, reduce the impact force caused by the impact, thereby extending the service life of the protective plate and ensuring the reliability and safety of the entire system.

[0025] Specifically, the buffer part includes a hollow sleeve mounted on the mounting base by screws. A slide rod is slidably connected to the inner wall of the hollow sleeve. A buffer airbag is fixedly connected to the slide rod on the side corresponding to the inner wall of the hollow sleeve. Multiple sets of auxiliary springs are provided on the inner wall of the hollow sleeve. The two ends of the multiple sets of auxiliary springs are fixedly connected to the slide rod and the inner wall of the hollow sleeve, respectively. Positioning ring one and positioning ring two are fixedly connected to the surface of the slide rod. Positioning ring two is located below positioning ring one.

[0026] In this embodiment: when the protective plate is impacted, the protective plate can move in the hollow sleeve by the sliding rod driven by the bracket, and then compress the buffer airbag to achieve a buffering effect. The auxiliary spring can work with the buffer airbag to buffer and improve the buffering effect. During the installation process, when the sliding rod in the buffer part is inserted into a certain position in the bracket, the second positioning ring can fit with the surface of the bracket to achieve a positioning effect. At the same time, when the protective plate is impacted and moves to a certain position, the first positioning ring can fit with the surface of the hollow sleeve and the mounting base to restrict the movement of the protective plate.

[0027] Working principle: During use, the hollow sleeve is first installed on the mounting base using screws. Then, the sliding rod in the buffer section is inserted into the inner wall of the bracket. After being inserted to a certain position, the second positioning ring abuts against the surface of the bracket to achieve positioning. Subsequently, the return spring cooperates with the locking block to lock the locking block into the inner wall of the sliding rod, thus completing the installation of the protective plate. When encountering flying stones during movement, the protective plate can effectively intercept and protect against them. At the same time, when the protective plate is impacted, it can move through the bracket and the sliding rod in the hollow sleeve, thereby compressing the buffer airbag to achieve a buffering effect. The auxiliary spring can cooperate with the buffer airbag to further buffer and improve the buffering effect. After the protective plate moves to a certain position after being impacted, the first positioning ring can fit against the surface of the hollow sleeve and the mounting base to restrict the movement of the protective plate.

[0028] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A motor-mounted axle assembly, comprising an axle assembly body, two shafts, wheel hubs, and a motor body, wherein the two shafts are mounted on the axle assembly and connected to a differential lock in the axle assembly body, wheel hubs are mounted on the surface of the shafts, and the motor body is mounted on the surface of the axle assembly body, characterized in that... It also includes protective devices; The protective device includes two mounting seats installed on the surface of the axle assembly. Each mounting seat has two buffer parts installed on it. A protective plate is provided below the axle assembly. Two brackets are fixedly connected to the surface of the protective plate. The buffer parts are inserted into the inner wall of the brackets. A locking block is slidably connected to the inner wall of the brackets. The locking block is inserted into the inner wall of the buffer part. A return spring is provided between the locking block and the inner wall of the bracket.

2. The motor-mounted external axle assembly as described in claim 1, characterized in that, The protective plate is arranged in an arc shape.

3. The motor-mounted external axle assembly as described in claim 1, characterized in that, The buffer part includes a hollow sleeve that is mounted on a mounting base by screws. A sliding rod is slidably connected to the inner wall of the hollow sleeve, and a buffer airbag is fixedly connected to the side of the sliding rod corresponding to the inner wall of the hollow sleeve.

4. The motor-mounted external axle assembly as described in claim 3, characterized in that, The inner wall of the hollow sleeve is provided with multiple sets of auxiliary springs, and the two ends of the multiple sets of auxiliary springs are respectively fixedly connected to the slide rod and the inner wall of the hollow sleeve.

5. The motor-mounted external axle assembly as described in claim 1, characterized in that, There are two return springs, and the two ends of the return springs are fixedly connected to the inner walls of the locking block and the bracket, respectively.

6. The motor-mounted external axle assembly as described in claim 3, characterized in that, The surface of the slide rod is fixedly connected with a positioning ring one and a positioning ring two, with the positioning ring two located below the positioning ring one.

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