A rear axle reduction motor with easy maintenance

Abstract

The utility model provides an easy maintenance rear axle reduction motor relates to reduction motor technical field, including speed reducer shell and tension transmission mechanism, the speed reducer shell is formed by the butt joint combination of circular reduction gearbox and conical box cover, the butt joint ring is integrally formed with a plurality of positioning insert block on the open end of circular reduction gearbox, the butt joint ring is integrally formed with abutting ring on the open end of conical box cover, and the abutting ring is in contact with the butt joint ring top pressure abutting, and the positioning insert block penetrates the abutting ring, the shaft sleeve is integrally formed with the closed end of conical box cover, is used for transmission connection of positioning insert block and transmission ring, and the thread of thread locking sleeve is transmitted on the positioning insert block with the thread propelling force. The utility model can omit when the speed reducer shell is disassembled before and after the maintenance of the speed reducer, needs to loosen the multiple thread locking pieces in turn, and only then can the circular reduction gearbox and conical box cover be implemented disassembly separation and butt joint locking trouble, and the speed reducer is easy to implement maintenance.

Description

Technical Field

[0001] This utility model relates to the field of geared motor technology, and in particular to an easy-to-maintain rear axle geared motor. Background Technology

[0002] Rear axle geared motors are widely used in electric tricycles and mobility scooters for the elderly. The ease of maintenance of the rear axle geared motor is an important criterion for measuring its practicality. Therefore, it is necessary to design an easy-to-maintain rear axle geared motor to improve its practicality.

[0003] The housing and cover of the geared motor are mostly locked and positioned by multiple equally spaced threaded locking parts (such as bolts) for assembly. This means that when disassembling and maintaining the geared motor, multiple threaded locking parts need to be loosened step by step to unlock and loosen the geared motor housing, and the internal parts of the geared motor need to be exposed for inspection. This operation is relatively troublesome and inconvenient, and is not conducive to the disassembly and maintenance of the geared motor. Utility Model Content

[0004] In view of this, the present invention provides an easy-to-maintain rear axle geared motor to solve the problem that it is cumbersome and inconvenient to operate by having to loosen and unscrew multiple threaded locking parts in a step-by-step manner to unlock and loosen the gearbox housing, and then open the gearbox housing to expose the internal parts of the gearbox for maintenance.

[0005] The technical solution proposed by this utility model is as follows: an easy-to-maintain rear axle geared motor, specifically including a gearbox housing and a force transmission mechanism. The gearbox housing is formed by the docking of a circular gearbox and a conical cover. The open end of the circular gearbox has an integrally formed docking ring, and multiple positioning blocks are integrally formed on the docking ring. The open end of the conical cover has an integrally formed abutment ring, which presses against the docking ring, and the positioning blocks pass through the abutment ring. The closed end of the conical cover has an integrally formed bushing, and a threaded locking sleeve is screwed onto the outer circumference of the bushing. A transmission ring is rotatably fitted on the threaded locking sleeve. The force transmission mechanism is located between the positioning blocks and the transmission ring, and is used to drive the positioning blocks and the transmission ring to transmit the threaded pushing force of the threaded locking sleeve to the positioning blocks, driving the circular gearbox to slide toward the conical cover, and performing docking assembly and positioning sealing between the two.

[0006] Furthermore, the force transmission mechanism includes a retaining ring, an arc-shaped sliding sleeve, and a synchronizing ring. Multiple arc-shaped sliding sleeves are slidably mounted on the retaining ring in the form of spring push, and a synchronizing ring is welded into the outer space of the multiple arc-shaped sliding sleeves.

[0007] Furthermore, the tension transmission mechanism also includes a U-shaped limiting frame, a connecting rod, and an arc-shaped insert rod. An arc-shaped insert rod is integrally formed on the side of the arc-shaped sliding sleeve facing the abutting ring. Multiple sets of U-shaped limiting frames are welded around the side of the retaining ring facing the abutting ring. Multiple connecting rods are rotatably connected between the transmission rotating ring and the retaining ring.

[0008] Furthermore, each set of U-shaped limiting frames consists of two U-shaped limiting frames spaced apart, and a slot is formed between each pair of U-shaped limiting frames. The slot is engaged with the positioning block, and the arc-shaped rod is engaged with both the U-shaped limiting frame and the positioning block.

[0009] Furthermore, the spring that pushes the arc-shaped sliding sleeve is mounted on the retaining ring and is compressed and clamped between the arc-shaped sliding sleeve and the U-shaped limiting frame away from the arc-shaped sliding sleeve.

[0010] Furthermore, a sealing gasket is squeezed and clamped between the docking ring and the abutment ring.

[0011] Furthermore, a power input shaft is rotatably mounted inside the bushing.

[0012] Furthermore, it also includes a motor and a gear set. The motor shaft is connected to the power input shaft via a coupling. The gear set is installed inside the reducer housing and is connected to the power input shaft.

[0013] The easy-to-maintain rear axle geared motor provided by this utility model has the following beneficial effects: When the arc-shaped plug and the positioning plug are engaged, the mating ring and the retaining ring can be fixedly connected together. After the mating ring and the retaining ring are fixedly connected, they can be connected to the threaded locking sleeve through the connecting rod and the transmission rotating ring. Under this transmission condition, rotating the threaded locking sleeve in both directions can push its body, as well as the retaining ring, the mating ring, and the reducer housing, to slide towards or away from the abutment ring and the conical box cover, controlling the mating ring and the abutment ring to abut or separate. Before and after maintenance of the reducer, the circular reducer housing and the conical box cover can be tightened and assembled or loosened and unlocked, and the reducer housing can be disassembled and opened or assembled and closed. Compared with the existing technology that uses multiple threaded locking parts (such as bolts) to lock and assemble and loosen the above two, this can save the trouble of having to tighten and loosen multiple threaded locking parts step by step when disassembling and assembling the reducer housing before and after maintenance of the reducer, in order to disassemble, separate and lock the circular reducer housing and the conical box cover. This helps to improve the disassembly and assembly efficiency of the reducer housing and makes it easier to maintain the reducer. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0015] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0016] In the attached diagram: Figure 1 A schematic diagram of the overall structure of this utility model is shown; Figure 2 A schematic diagram of the structure of the reducer housing in this utility model is shown; Figure 3 A schematic diagram of the circular gearbox in this utility model is shown; Figure 4 A schematic diagram showing the disassembled state of the circular gearbox in this utility model is provided. Figure 5 A schematic diagram showing the installation position of the gear set in this utility model is shown; Figure 6 A schematic diagram showing the disassembled state of the retaining ring in this utility model is shown; Figure 7 A schematic diagram showing the disassembled state of the synchronization ring in this utility model is shown.

[0017] List of reference numerals in the attached diagram: 1. Gearbox housing; 101. Circular gearbox; 1011. Connecting ring; 1012. Positioning block; 102. Conical cover; 1021. Abutment ring; 1022. Bushing; 1023. Threaded locking sleeve; 1024. Wrench insert; 1025. Transmission rotating ring; 2. Gear set; 3. Retaining ring; 301. Arc-shaped sliding sleeve; 302. Synchronizing ring; 303. U-shaped limiting frame; 304. Connecting rod; 305. Arc-shaped insert rod; 4. Motor. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this 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, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Please refer to Figures 1 to 7 Example 1: This embodiment proposes an easy-to-maintain rear axle geared motor, including a gearbox housing 1 and a force transmission mechanism. The gearbox housing 1 is formed by docking a circular gearbox 101 and a conical cover 102. A docking ring 1011 is integrally formed at the open end of the circular gearbox 101, and multiple positioning blocks 1012 are integrally formed on the side of the docking ring 1011 away from the circular gearbox 101. A retaining ring 1021 is integrally formed at the open end of the conical cover 102, and the retaining ring 1021 presses against and contacts the docking ring 1011. The positioning blocks 1012 penetrate the retaining ring 1021. The conical cover 102 has a sealing... The closed-end integrally formed bushing 1022 has a power input shaft rotatably mounted inside the bushing 1022, and a threaded locking sleeve 1023 is screwed onto the outer circumference of the bushing 1022. A transmission ring 1025 is rotatably mounted on the threaded locking sleeve 1023. A tension transmission mechanism is set between the positioning block 1012 and the transmission ring 1025 to drive the positioning block 1012 and the transmission ring 1025 to transmit the threaded pushing force of the threaded locking sleeve 1023 to the positioning block 1012, driving the circular reduction gearbox 101 to slide toward the conical box cover 102, and performing docking assembly and positioning sealing between the two.

[0020] Preferably, the force transmission mechanism includes a retaining ring 3, an arc-shaped sliding sleeve 301, and a synchronizing ring 302. Multiple arc-shaped sliding sleeves 301 are slidably mounted on the retaining ring 3 in the form of spring push, and the synchronizing ring 302 is welded in the outer space of the multiple arc-shaped sliding sleeves 301.

[0021] Preferably, the tension transmission mechanism further includes a U-shaped limiting frame 303, a connecting rod 304, and an arc-shaped insert rod 305. An arc-shaped insert rod 305 is integrally formed on the side of the arc-shaped sliding sleeve 301 facing the abutting ring 1021. Multiple sets of U-shaped limiting frames 303 are welded around the side of the retaining ring 3 facing the abutting ring 1021. Multiple connecting rods 304 are rotatably connected between the transmission rotating ring 1025 and the retaining ring 3.

[0022] Preferably, each group of U-shaped limiting frames 303 consists of two U-shaped limiting frames 303 spaced apart, and a slot is formed between each pair of U-shaped limiting frames 303. The slot is inserted into the positioning block 1012, and the arc-shaped insert 305 is inserted through the U-shaped limiting frame 303 and the positioning block 1012.

[0023] Preferably, the spring that pushes the arc-shaped slide sleeve 301 is mounted on the retaining ring 3 and is compressed and clamped between the arc-shaped slide sleeve 301 and the U-shaped limiting frame 303 away from the arc-shaped slide sleeve 301.

[0024] Preferably, a plurality of wrench inserts 1024 are integrally formed on the outer circumference of the end portion of the threaded locking sleeve 1023 away from the conical box cover 102.

[0025] Implementation 2: This embodiment is based on Implementation 1, but with the following additions: This embodiment includes a motor 4 and a gear set 2. A sealing gasket is squeezed and clamped between the mating ring 1011 and the abutment ring 1021. The rotating shaft of the motor 4 is connected to the power input shaft through a coupling. The gear set 2 is installed inside the reducer housing 1 and is connected to the power input shaft.

[0026] Preferably, the number of positioning blocks 1012 and arc-shaped sliding sleeves 301 corresponds to the number of sets of U-shaped limiting frames 303.

[0027] Preferably, six positioning blocks 1012 are provided.

[0028] The working principle, specific details, implementation steps, functions and interrelationships of the features in the above embodiments, and the roles these features play in realizing this technical solution will be described and explained in detail below: The reducer housing 1 and the gear set 2 together constitute the reducer; the motor 4 is driven by the gear set 2 through the power input shaft. The gear set 2 is equipped with a power output shaft, which is connected to an external power receiving unit (such as a wheel). When the rear axle reducer motor is in operation, the torque of the motor 4 is amplified by a certain proportion through the gear set 2 and then output to the power receiving unit to drive the power receiving unit to rotate.

[0029] When inspecting and maintaining the speed reducer, the circular gearbox 101 and the conical cover 102 need to be disassembled and separated to open the speed reducer housing 1 and expose the internal parts of the speed reducer for easy inspection and maintenance.

[0030] The threaded locking sleeve 1023 needs to be driven by an external torque wrench. The external torque wrench is a cylindrical steel bar or a round steel shaft with a diameter matching the inner diameter of the wrench insert 1024. The head end of the external torque wrench is inserted into the threaded locking sleeve 1023, and the external torque wrench can be used to achieve the torsional drive operation of the threaded locking sleeve 1023.

[0031] When the arc-shaped insert 305 is engaged with the positioning insert 1012, the mating ring 1011 and the retaining ring 3 can be fixedly connected together. After the mating ring 1011 and the retaining ring 3 are fixedly connected, they can be connected to the threaded locking sleeve 1023 via the connecting rod 304 and the transmission rotating ring 1025. Under this transmission condition, rotating the threaded locking sleeve 1023 in both directions can push its body, as well as the retaining ring 3, the mating ring 1011, and the reducer housing 1, to slide towards or away from the abutment ring 1021 and the conical box cover 102, controlling the mating ring 1011 to abut or separate from the abutment ring 1021. The circular gearbox 101 and the conical cover 102 are tightened and connected or loosened and unlocked before and after the reducer, and the reducer housing 1 is disassembled and opened or reassembled and closed. Compared with the existing technology that uses multiple threaded locking parts (such as bolts) to lock and unlock the above two, this can save the trouble of having to tighten and loosen multiple threaded locking parts step by step when disassembling and assembling the reducer housing 1 before and after the reducer is inspected and maintained. This helps to improve the disassembly and assembly efficiency of the reducer housing 1 and facilitates the inspection and maintenance of the reducer.

[0032] When disassembling the circular gearbox 101 and the conical cover 102, the arc-shaped insert rod 305 needs to be pulled away from the positioning block 1012 to unlock and loosen the docking ring 1011 and the retaining ring 3. When locking and assembling the circular gearbox 101 and the conical cover 102, the arc-shaped insert rod 305 needs to be inserted into the positioning block 101 to fix the docking ring 1011 and the retaining ring 3. The arc-shaped insert rod 305 is held in the inserted and positioned state by the spring push on the retaining ring 3. The six arc-shaped insert rods 305 are fixedly connected together by the synchronization ring 302. The forward and reverse torsion synchronous ring 302 can drive the six arc-shaped plug rods 305 to move synchronously in both directions, controlling the six arc-shaped plug rods 305 to simultaneously pull out or plug in with the six positioning plug blocks 1012, completing the fixed connection and release / unlocking of the docking ring 1011 and the retaining ring 3 in one go. This eliminates the trouble of having to pull out and plug in the six arc-shaped plug rods 305 with the positioning plug blocks 1012 in steps before and after disassembling the circular gearbox 101 and the conical box cover 102, which helps to further improve the disassembly and assembly efficiency of the gearbox housing 1 and makes the gearbox easier to inspect and maintain.

[0033] It is worth noting that the specific structure of gear set 2 and its connection and assembly relationship with the power output shaft and power input shaft are existing technologies for those skilled in the art who are engaged in equipment design, modification and upgrading, so they will not be described in detail here.

[0034] The following points should be noted in this article: 1. The accompanying drawings of this utility model embodiment only involve the structures involved in this utility model embodiment; other structures can refer to general designs.

[0035] 2. Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0036] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An easy-to-maintain rear axle geared motor, comprising a gearbox housing (1) and a force transmission mechanism, wherein the gearbox housing (1) is formed by a combination of a circular gearbox (101) and a conical cover (102); Its features are, The circular gearbox (101) has an integrally formed docking ring (1011) at its open end, and multiple positioning blocks (1012) are integrally formed on the docking ring (1011); the conical box cover (102) has an integrally formed abutment ring (1021) at its open end, which presses against the docking ring (1011) and the positioning blocks (1012) penetrate the abutment ring (1021); the conical box cover (102) has an integrally formed bushing (1022) at its closed end, and the bushing (1022) is threaded around its outer circumference. There is a threaded locking sleeve (1023), and a transmission ring (1025) is rotatably mounted on the threaded locking sleeve (1023); the tension transmission mechanism is set between the positioning block (1012) and the transmission ring (1025) to drive the positioning block (1012) and the transmission ring (1025) to transmit the threaded pushing force of the threaded locking sleeve (1023) to the positioning block (1012), drive the circular reduction gearbox (101) to slide toward the conical box cover (102), and perform docking assembly and positioning sealing of the two.

2. The easy-to-maintain rear axle geared motor according to claim 1, characterized in that, The tension transmission mechanism includes a retaining ring (3), an arc-shaped sliding sleeve (301), and a synchronizing ring (302). Multiple arc-shaped sliding sleeves (301) are slidably mounted on the retaining ring (3) in the form of spring push. The synchronizing ring (302) is welded in the outer space of the multiple arc-shaped sliding sleeves (301).

3. The easy-to-maintain rear axle geared motor according to claim 2, characterized in that, The tension transmission mechanism also includes a U-shaped limiting frame (303), a connecting rod (304) and an arc-shaped insert rod (305). An arc-shaped insert rod (305) is integrally formed on the side of the arc-shaped sliding sleeve (301) facing the abutment ring (1021). Multiple sets of U-shaped limiting frames (303) are welded around the side of the retaining ring (3) facing the abutment ring (1021). Multiple connecting rods (304) are rotatably connected between the transmission rotating ring (1025) and the retaining ring (3).

4. The easy-to-maintain rear axle geared motor according to claim 3, characterized in that, Each set of U-shaped limiting frames (303) consists of two U-shaped limiting frames (303) spaced apart. A slot is formed between each pair of U-shaped limiting frames (303) in a set. The slot is inserted into the positioning block (1012). The arc-shaped rod (305) is inserted into the U-shaped limiting frame (303) and the positioning block (1012).

5. The easy-to-maintain rear axle geared motor according to claim 3, characterized in that, The spring that pushes the arc-shaped slide sleeve (301) is mounted on the retaining ring (3) and is compressed and clamped between the arc-shaped slide sleeve (301) and the U-shaped limiting frame (303) away from the arc-shaped slide sleeve (301).

6. The easy-to-maintain rear axle geared motor according to claim 1, characterized in that, A sealing gasket is squeezed and clamped between the docking ring (1011) and the abutment ring (1021).

7. The easy-to-maintain rear axle geared motor according to claim 1, characterized in that, The power input shaft is rotatably mounted inside the bushing (1022).

8. The easy-to-maintain rear axle geared motor according to claim 7, characterized in that, It also includes a motor (4) and a gear set (2). The rotating shaft of the motor (4) is connected to the power input shaft through a coupling. The gear set (2) is installed inside the reducer housing (1) and is connected to the power input shaft.

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