Motor beam fixing structure

Abstract

The utility model discloses a kind of motor crossbeam fixed structure, it is related to motorcycle technical field, including frame and motor, it is characterized in that, the bottom of the frame is connected with crossbeam, the crossbeam is equipped with the fixed structure for connecting motor, the fixed structure includes snap ring, one end of the motor and the snap ring are detachably connected, the other end of the motor and the frame are detachably connected;The utility model motor is formed four point floating fixed by snap ring, support ring and crossbeam, rear end is formed rigid fixed with frame through connecting plate, and overall formation is the hybrid constraint scheme of "three point floating+one point rigidity", effectively inhibit the torsion and vibration when motor operation, also allow frame to produce appropriate elastic deformation in jolt, avoid stress concentration, improve whole vehicle reliability and comfort.

Description

Technical Field

[0001] This utility model relates to the technical field of motorcycles, and in particular to a motor crossbeam fixing structure. Background Technology

[0002] For existing electric motorcycles where output speed and torque requirements are not high, a relatively small electric motor is often used as the driver. A small sprocket is fixed on the motor's output shaft, and a large sprocket is fixed on one of the motorcycle's tires. The motor drives the rotation of the large sprocket to propel the motorcycle.

[0003] Using a battery to drive the motor for propulsion inherits the advantages of electric vehicles, such as environmental friendliness, low maintenance costs, and high torque, while also taking into account the characteristics of motorcycles, such as small size, lightweight body, and flexible operation. This makes it very popular in the consumer market. However, the existing motor fixing devices for electric motorcycles have the problem of not being able to securely fix the motor after installation. The motor is prone to shaking, and the motor disassembly process is troublesome, time-consuming, and laborious, which is not conducive to people's use. Utility Model Content

[0004] Purpose of the invention: The purpose of this utility model is to provide a motor crossbeam fixing structure to solve the problem of inconvenient motor fixing and installation at the vehicle frame.

[0005] Technical solution:

[0006] A motor crossbeam fixing structure includes a frame and a motor, characterized in that a crossbeam is connected to the bottom of the frame, the crossbeam is provided with a fixing structure for connecting the motor, the fixing structure includes a retaining ring, one end of the motor is detachably connected to the retaining ring, and the other end of the motor is detachably connected to the frame.

[0007] Preferably, the fixing mechanism further includes a support ring, the support ring and the retaining ring are located at the two ends of the motor respectively, and the support ring and the motor are engaged.

[0008] Preferably, both the support ring and the retaining ring are provided with a plurality of through holes, and bolts are inserted through the through holes in both the support ring and the retaining ring, the bolts passing through the motor.

[0009] Preferably, the support ring is an arc ring, and the support ring abuts against the lower end of the motor.

[0010] Preferably, both the support ring and the retaining ring are connected to a fixed base, and the fixed base is bolted to the crossbeam.

[0011] Preferably, a connecting plate is detachably mounted on the frame, and the connecting plate is connected to the motor.

[0012] Preferably, the connecting plate is detachably connected to a cover plate, the cover plate is located on one side of the motor, and an extension is connected between the cover plate and the motor.

[0013] Beneficial effects: The motor is fixed by four floating points formed by the retaining ring, support ring and crossbeam, and the rear end is fixed to the frame by the connecting plate. The whole forms a "three floating points + one rigid point" hybrid constraint scheme, which effectively suppresses the torsion and vibration of the motor during operation, and allows the frame to produce appropriate elastic deformation during bumps, avoids stress concentration, and improves the reliability and comfort of the whole vehicle. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a side view of the structure of this utility model;

[0016] Figure 3 This is a bottom view of the structure of this utility model.

[0017] Reference numerals: 11. Frame; 12. Crossbeam; 13. Motor; 14. Snap ring; 15. Through hole; 16. Support ring; 17. Fixed base; 18. Connecting plate; 19. Cover plate; 20. Extension piece. Detailed Implementation

[0018] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] Example 1

[0020] like Figure 1-3 As shown, a motor crossbeam fixing structure includes a frame 11, a crossbeam 12 and a motor 13. The lower part of the frame 11 is formed by welding two left and right longitudinal beams and several crossbeams 12 into a closed frame. The frame 11 also includes an integral support beam, which is arched and welded to the longitudinal beams and crossbeams 12.

[0021] Among them, the two crossbeams 12 on one side of the frame 11 also serve as the mounting beams for the motor 13, and the motor 13 is fixedly connected to the crossbeams 12 by bolts.

[0022] The motor 13 is horizontally mounted on the rear side of the frame 11, with its output shaft extending out of the frame of the frame 11. The end of the motor 13 housing near the output shaft is a necked cylindrical section, and the end away from the output shaft is a flange with a ring of threaded holes around its outer circumference.

[0023] Furthermore, a fixing structure is provided on the crossbeam 12 to fix the motor 13 within the frame of the vehicle frame 11, ensuring that the motor can work stably during vehicle movement.

[0024] The fixing structure mainly includes a retaining ring 14, which is a one-piece cast aluminum part. The retaining ring 14 is connected to the motor 13 away from the output end. The retaining ring 14 abuts against the flange. The retaining ring 14 is provided with several through holes 15, which correspond one-to-one with the through holes on the flange, so as to facilitate connection by bolts.

[0025] Furthermore, the fixing structure also includes a support ring 16, which can be a ring composed of two halves, or an arc ring with an arc angle slightly larger than a semicircle. It straddles the lower part of the motor housing 13 near the output shaft to support the motor and share some of the weight. The support ring 16 is supported by the constricted cylindrical section of the motor.

[0026] Both the retaining ring 14 and the support ring 16 have an inner arc surface that can be vulcanized with a layer of wear-resistant rubber gasket. The gasket surface has crisscrossing fine grooves to store grease, reduce fretting wear between the motor 13 housing and the metal ring, and also serve to isolate vibration and reduce noise. Flanges extend from both ends of the gasket, and the flanges are clamped between the ring body and the fixed base to achieve axial positioning of the gasket and prevent circumferential slippage of the gasket when the motor 13 is running.

[0027] The support ring 16 and the retaining ring 14 are evenly distributed with several through holes 15 around their circumference. The hole positions correspond one-to-one with the threaded holes on the housing of the motor 12. High-strength bolts pass through the retaining ring 14, the motor 13, and the support ring 16 in sequence and are then tightened with self-locking nuts, so that the motor 13, the retaining ring 14, and the support ring 16 form an integral force-bearing unit.

[0028] A fixed base 17 is connected to the support ring 16 and the retaining ring 14. The fixed base 17 is connected to the crossbeam 12. The fixed base 17 is L-shaped, with the upright plate and the ear piece fitting together, and the bottom plate fitting together with the crossbeam 12. The bottom plate also has an elongated hole, which can slide back and forth on the crossbeam 12 to adjust the position of the motor. After adjustment, it is locked by two sets of bolts, nuts and spring washers.

[0029] A reinforcing rib is provided between the upright plate and the ear piece of the fixed base 17. The reinforcing rib is triangular with a rounded transition at the root to avoid stress concentration.

[0030] In this embodiment, the support ring 16 and the retaining ring 14 are integrally formed with the corresponding fixed base 17, providing higher connection strength and ensuring installation effect.

[0031] A connecting plate 18 is bolted to the inner side of the last longitudinal beam of the frame 11. The connecting plate 18 is made of thick steel plate laser-cut and has through holes corresponding to the threaded holes of the motor 13. After the motor 13 is attached to the connecting plate 18, it is tightened with high-strength bolts and spring washers to achieve a rigid connection between the rear end of the motor 13 and the frame 11.

[0032] Meanwhile, the connecting plate 18 can also be connected to the motor 13 without direct connection. A cover plate 19 is connected to the end of the connecting plate 18. The cover plate 19 is a plastic part and is located on the axial side of the output shaft of the motor 13 to achieve the protection effect of the output shaft and reduce external interference to the output shaft.

[0033] An extension member 20 is sandwiched between the cover plate 19 and the housing of the motor 13. The extension member 20 is a section of hollow steel sleeve, with stops at both ends corresponding to the housing of the motor 13 and the cover plate 19, respectively. The inner cavity of the sleeve can accommodate the motor wiring harness and encoder wire. The extension member is coaxially fixed to the motor 13 and the cover plate 19 by bolts, which increases the support length of the cantilever end of the motor 13 and provides a concealed and reliable wiring channel for the wiring harness.

[0034] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A motor crossbeam fixing structure, comprising a frame and a motor, characterized in that, The bottom of the frame is connected to a crossbeam, and the crossbeam is provided with a fixing structure for connecting the motor. The fixing structure includes a retaining ring. One end of the motor is detachably connected to the retaining ring, and the other end of the motor is detachably connected to the frame.

2. The motor crossbeam fixing structure according to claim 1, characterized in that, The fixing structure also includes a support ring, and the support ring and the retaining ring are located at the two ends of the motor respectively, and the support ring and the motor are engaged.

3. The motor crossbeam fixing structure according to claim 2, characterized in that, Both the support ring and the retaining ring are provided with several through holes, and bolts are inserted through the through holes of the support ring and the retaining ring, and the bolts pass through the motor.

4. The motor crossbeam fixing structure according to claim 3, characterized in that, The support ring is an arc ring, and the support ring abuts against the lower end of the motor.

5. The motor crossbeam fixing structure according to claim 3, characterized in that, Both the support ring and the retaining ring are connected to a fixed base, and the fixed base is bolted to the crossbeam.

6. The motor crossbeam fixing structure according to claim 1, characterized in that, A connecting plate is detachably mounted on the frame, and the connecting plate is connected to the motor.

7. The motor crossbeam fixing structure according to claim 6, characterized in that, The connecting plate is detachably connected to a cover plate, which is located on one side of the motor, and an extension is connected between the cover plate and the motor.

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