Manual-automatic integrated gearbox with shock absorption and noise reduction functions for electric tricycle

Abstract

The utility model belongs to the technical field of gearboxes, and discloses a manual-automatic integrated gearbox with shock absorption and noise reduction functions for an electric tricycle, which comprises a bottom plate, a gearbox shell is arranged above the bottom plate, shock absorption support components are arranged on two sides of the gearbox shell, and the shock absorption support components are arranged on the bottom plate. The bottom of the gearbox shell is connected with a damping rod, the damping rod is arranged on the bottom plate, the gearbox shell comprises an outer shell body and an inner shell body, the inner shell body is located on the inner side of the outer shell body, a silencing cavity is formed between the inner shell body and the outer shell body, sound absorption holes are formed in the inner shell body, and limiting is formed in the up-down and left-right directions. The transmission of vibration is reduced by means of a rubber structure and a spring structure, the gearbox can be protected, the gearbox can be quickly mounted and dismounted, the use of the gearbox is facilitated, the sound absorption holes and the noise reduction cavity can absorb generated noise, the generated noise is eliminated in the noise reduction cavity, and noise reduction cotton in the noise reduction cavity can further absorb the noise.

Description

Technical Field

[0001] This utility model belongs to the field of gearbox technology, specifically a manual-automatic gearbox with shock absorption and noise reduction for electric tricycles. Background Technology

[0002] The electric tricycle automatic transmission is an innovative technology that combines the functions of manual and automatic transmission, providing greater convenience and comfort for driving electric tricycles. It has advantages such as automatic transmission, manual transmission, intelligent control, improved energy efficiency, enhanced comfort, and suitability for various road conditions. The electric tricycle transmission is generally installed on the chassis of the electric tricycle and connected to the drive motor through a drive shaft.

[0003] Chinese Patent Application No. 201920833319.0 discloses a vibration-damping and noise-reducing gearbox, including a cover, a lid rotatably connected to the top of the cover, a sealing layer adhered to the inner side of the cover and the bottom of the lid, a number of heat dissipation holes opened between the lid and the sealing layer, a number of staggered inclined plates welded to both ends of the heat dissipation holes, a number of sound-absorbing grooves opened below the inclined plates, a handle installed on the top of the lid, a placement groove welded to the inside of the cover, a gearbox placed in the placement groove, a number of first fixing blocks welded to both ends of the inner sidewalls of the cover, a spring welded to the end of the first fixing block away from the inner sidewall of the cover, a second fixing block welded to the end of the spring away from the first fixing block, a clamping plate welded between the ends of the second fixing blocks away from the spring, a pull ring welded to both ends of the clamping plate, and mounting plates welded to both sides of the top of the cover, each mounting plate having mounting holes.

[0004] However, the above-mentioned vibration-damping and noise-reducing gearbox has the following problems: the cover structure installs the gearbox inside the cover, which is not conducive to the installation and disassembly of the gearbox, and the single sound-absorbing groove structure is not effective in absorbing noise.

[0005] Therefore, a manual / automatic transmission with shock absorption and noise reduction for electric tricycles is proposed to address the above problems. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides a manual-automatic transmission with shock absorption and noise reduction for electric tricycles, which has the advantages of convenient transmission installation and disassembly and improved shock absorption and noise reduction effects.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a manual-automatic transmission with shock absorption and noise reduction for an electric tricycle, comprising a base plate, a transmission housing on the top of the base plate, shock absorption support components on both sides of the transmission housing, the shock absorption support components being disposed on the base plate, and a shock absorption rod connected to the bottom of the transmission housing being disposed on the base plate;

[0008] The gearbox housing includes an outer shell and an inner shell. The inner shell is located inside the outer shell. A sound-absorbing cavity is provided between the inner shell and the outer shell. The inner shell is provided with sound-absorbing holes that communicate with the sound-absorbing cavity.

[0009] The shock-absorbing support assembly includes a vertical plate, a fixed plate is fixedly connected to the top of the vertical plate, an adjusting bolt is provided on the fixed plate, a movable plate is connected to the end of the adjusting bolt through a bearing, a positioning rod is fixedly connected to the side of the movable plate away from the fixed plate, the positioning rod passes through the fixed plate, two rubber pillars are fixedly connected to the opposite side of the movable plate, a positioning groove is provided on the gearbox housing at the position corresponding to the rubber pillars, and the end of the rubber pillar extends into the positioning groove.

[0010] Preferably, the base plate has fixing holes at the four corners.

[0011] Preferably, a limiting groove is provided at the bottom of the gearbox housing corresponding to the position of the shock absorber rod, and the top end of the shock absorber rod extends into the limiting groove.

[0012] Preferably, the shock absorber includes a cylinder, a movable plate is provided inside the cylinder, a shock absorber spring is connected to the top of the movable plate, a movable rod is connected to the bottom of the movable plate, and the bottom end of the movable rod passes through the cylinder and connects to the bottom plate.

[0013] Preferably, the outer side of the cylinder is covered with a rubber pad.

[0014] Preferably, the silencing cavity is filled with sound-absorbing cotton.

[0015] Preferably, the fixing plate is provided with threaded holes and positioning holes, and the threaded holes and positioning holes are respectively movably connected to the adjusting bolt and the positioning rod.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model sets up a shock-absorbing support component and a shock-absorbing rod to form a limit in the up, down, left and right directions, and relies on the rubber structure and spring structure to reduce the transmission of vibration, which is beneficial to protect the gearbox and allows for quick installation and removal of the gearbox, which is beneficial to the use of the gearbox.

[0018] 2. This utility model uses a gearbox housing with a double-layer shell. The sound-absorbing holes and sound-absorbing cavity on the housing can absorb the generated noise and eliminate it in the sound-absorbing cavity. Furthermore, the sound-absorbing cotton in the sound-absorbing cavity can further absorb the noise. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2This is a schematic diagram of the structure of the shock-absorbing support component of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the movable plate of this utility model;

[0022] Figure 4 This is a schematic diagram of the bottom structure of the gearbox housing of this utility model;

[0023] Figure 5 This is a structural schematic diagram of the gearbox housing of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the shock absorber rod of this utility model.

[0025] In the diagram: 1. Base plate;

[0026] 2. Gearbox housing; 21. Outer housing; 22. Inner housing; 23. Silencing chamber; 24. Sound absorption hole;

[0027] 3. Vibration damping support assembly; 31. Vertical plate; 32. Fixed plate; 33. Adjusting bolt; 34. Moving plate; 35. Positioning rod; 36. Rubber column; 37. Positioning groove;

[0028] 4. Shock absorber rod; 41. Cylinder body; 42. Movable plate; 43. Shock absorber spring; 44. Movable rod;

[0029] 5. Fixing hole; 6. Limiting groove; 7. Rubber pad; 8. Sound-absorbing cotton; 9. Threaded hole; 10. Positioning hole. Detailed Implementation

[0030] 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.

[0031] like Figures 1 to 6 As shown, this utility model provides a manual-automatic transmission with shock absorption and noise reduction for electric tricycles, including a base plate 1, which is bolted to the chassis of the electric tricycle. The transmission is connected to the drive motor and the rear axle assembly via a drive shaft. A transmission housing 2 is provided on the top of the base plate 1. Shock-absorbing support components 3 are provided on both sides of the transmission housing 2. The shock-absorbing support components 3 are provided on the base plate 1. A shock-absorbing rod 4 is connected to the bottom of the transmission housing 2 and is provided on the base plate 1.

[0032] The gearbox housing 2 includes an outer housing 21 and an inner housing 22. The inner housing 22 is located inside the outer housing 21. A sound-absorbing cavity 23 is provided between the inner housing 22 and the outer housing 21. The inner housing 22 is provided with sound-absorbing holes 24, which are connected to the sound-absorbing cavity 23. The sound-absorbing holes 24 and the sound-absorbing cavity 23 can absorb the generated noise and eliminate it within the sound-absorbing cavity 23. Furthermore, the sound-absorbing cotton 8 inside the sound-absorbing cavity 23 can further absorb the noise.

[0033] The shock-absorbing support assembly 3 includes a vertical plate 31, a fixed plate 32 fixedly connected to the top of the vertical plate 31, an adjusting bolt 33 on the fixed plate 32, and a movable plate 34 connected to the end of the adjusting bolt 33 via a bearing. A positioning rod 35 is fixedly connected to the side of the movable plate 34 that is away from it. The positioning rod 35 passes through the fixed plate 32. Two rubber pillars 36 are fixedly connected to the opposite side of the movable plate 34. A positioning groove 37 is provided on the gearbox housing 2 at the position corresponding to the rubber pillars 36. The ends of the rubber pillars 36 extend into the positioning groove 37, forming a limit in the up, down, left, and right directions. It reduces the transmission of vibration by relying on the rubber structure and spring structure, which is beneficial to protecting the gearbox and allows for quick installation and removal of the gearbox, which is beneficial to the use of the gearbox.

[0034] Specifically, fixing holes 5 are provided at the four corners of the base plate 1.

[0035] Furthermore, a limiting groove 6 is provided at the bottom of the gearbox housing 2 at the position corresponding to the shock absorber 4, and the top end of the shock absorber 4 extends into the limiting groove 6.

[0036] Furthermore, the shock absorber 4 includes a cylinder 41, inside which is a movable plate 42. A shock absorber spring 43 is connected to the top of the movable plate 42, and a movable rod 44 is connected to the bottom of the movable plate 42. The bottom end of the movable rod 44 passes through the cylinder 41 and connects to the base plate 1.

[0037] It is worth noting that the outer side of the cylinder 41 is covered with a rubber pad 7, which can prevent noise from being generated by the collision between the cylinder 41 and the gearbox housing 2.

[0038] It is worth noting that the sound-absorbing cavity 23 is filled with sound-absorbing cotton 8, which can further absorb the noise of the gearbox.

[0039] It is worth mentioning that the fixed plate 32 is provided with threaded holes 9 and positioning holes 10, and the threaded holes 9 and positioning holes 10 are respectively movably connected to the adjusting bolt 33 and the positioning rod 35.

[0040] Working principle and process: The base plate 1 is bolted to the chassis of the electric tricycle. The gearbox is connected to the drive motor and the rear axle assembly via the drive shaft. The gearbox housing 2 is located between two sets of shock-absorbing support components 3. Rotating the adjusting bolt 33 moves the moving plate 34 under the constraint of the threaded structure and the positioning rod 35, extending the rubber column 36 connected to the moving plate 34 into the positioning groove 37 on the gearbox housing 2. The rubber column 36 directly contacts the gearbox housing 2, and its flexible material can absorb the transmitted vibration. The shock-absorbing rod 4 at the bottom of the gearbox housing 2 can extend and retract when receiving vibration to absorb part of the vibration and form a support structure for the gearbox housing 2, further stabilizing the gearbox. The noise generated by the gearbox is absorbed by the sound-absorbing holes 24 on the inner wall of the inner housing 22 and then transmitted into the silencing cavity 23, where it is gradually eliminated. The sound-absorbing cotton 8 filled in the silencing cavity 23 can further absorb noise, improve the noise absorption effect, and benefit the use of the gearbox.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A manual-automatic transmission with vibration and noise reduction for an electric tricycle, comprising a bottom plate (1), characterized in that: A gearbox housing (2) is provided above the base plate (1), shock-absorbing support assemblies (3) are provided on both sides of the gearbox housing (2), the shock-absorbing support assemblies (3) are arranged on the base plate (1), and a shock-absorbing rod (4) is connected to the bottom of the gearbox housing (2), and the shock-absorbing rod (4) is arranged on the base plate (1); The gearbox housing (2) comprises an outer housing (21) and an inner housing (22), the inner housing (22) being located inside the outer housing (21), a muffler cavity (23) being provided between the inner housing (22) and the outer housing (21), a sound absorbing hole (24) being provided on the inner housing (22), and the sound absorbing hole (24) being connected to the muffler cavity (23); The shock absorbing support assembly (3) comprises a vertical plate (31), the top of the vertical plate (31) is fixedly connected to a fixed plate (32), the fixed plate (32) is provided with an adjusting bolt (33), the end of the adjusting bolt (33) is connected to a movable plate (34) via a bearing, a positioning rod (35) is fixedly connected to the side of the movable plate (34) away from the movable plate (34), the positioning rod (35) passes through the fixed plate (32), two rubber columns (36) are fixedly connected to the opposite side of the movable plate (34), and a positioning groove (37) is provided at a position corresponding to the rubber column (36) on the gearbox housing (2), and the end of the rubber column (36) extends into the positioning groove (37).

2. The manual-automatic transmission with vibration and noise reduction for electric tricycle according to claim 1, characterized in that: Fixing holes (5) are provided at the four corners of the bottom plate (1).

3. The manual-automatic transmission with vibration and noise reduction for electric tricycle according to claim 1, characterized in that: A limiting groove (6) is provided at a position corresponding to the shock absorbing rod (4) at the bottom of the gearbox housing (2), and the top end of the shock absorbing rod (4) extends into the limiting groove (6).

4. The manual-automatic transmission with vibration and noise reduction for electric tricycle according to claim 1, characterized in that: The shock absorbing rod (4) comprises a cylinder (41), a movable plate (42) is arranged inside the cylinder (41), a shock absorbing spring (43) is connected to the top of the movable plate (42), a movable rod (44) is connected to the bottom of the movable plate (42), and the bottom end of the movable rod (44) passes through the cylinder (41) and is connected to the bottom plate (1).

5. The manual-automatic transmission with vibration and noise reduction for electric tricycle according to claim 4, characterized in that: The outer side of the cylinder (41) is covered with a rubber pad (7).

6. The manual-automatic transmission with vibration and noise reduction for electric tricycle according to claim 1, characterized in that: The silencing cavity (23) is filled with silencing cotton (8).

7. The manual-automatic transmission with vibration and noise reduction for electric tricycle according to claim 1, characterized in that: The fixing plate (32) is provided with a threaded hole (9) and a positioning hole (10), respectively, and the threaded hole (9) and the positioning hole (10) are respectively movably connected to the adjusting bolt (33) and the positioning rod (35).

Images