Electric gear shifter

Abstract

The utility model discloses an electric gear shifting device which comprises a gear shifting device body, a differential mechanism, an upper gear shifting rocker arm assembly and a lower gear shifting rocker arm assembly, the gear shifting device body comprises a shell, a gear assembly, a synchromesh gear ring assembly and a shifting fork, and the gear assembly, the synchromesh gear ring assembly and the shifting fork are arranged in the shell. The first end of each shifting fork is movably connected with the corresponding synchronous gear ring assembly, the vertical rocker arm gear shifting assembly is movably connected with the second end of the shifting fork through a horizontally-arranged shifting fork shaft, the differential mechanism is arranged on the lower portion of the gear shifter body, and the differential mechanism is connected with the corresponding gear assembly in a meshed mode through a driven gear arranged on the outer side of the differential mechanism. By optimizing and improving the overall arrangement of the gears and the gear shifting structure, the structure is simpler, the assembly is more convenient, the rotation of the input shaft is more flexible, and the phenomena of abnormal noise, gear shifting clamping stagnation and shifting are fundamentally eliminated. The utility model has the advantages of simple structure, small volume, convenience in use, flexibility in rotation, low noise, low cost and convenience in maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, in particular to an electric gear shifter. Background Art

[0002] An electric vehicle refers to a vehicle that uses electricity to provide power output. The gears of an electric vehicle include forward, reverse and parking, and the gear changes are controlled by a gear shifter.

[0003] The existing electric gear shifters have a complex internal structure, are large in size, and are heavy. They are inconvenient to install and maintain, are prone to jamming and movement, and have a high overall cost. Sometimes, they are prone to abnormal noise. The gear lever is easily affected by external forces, which can cause unexpected gear changes, thereby causing accidents in electric vehicle driving. Especially when the spring is aged or the tightness is inappropriate, it becomes very unclear to distinguish between forward and reverse gears, making it easy to shift into the wrong gear. It is inconvenient to use and may even result in involuntary gear changes that are dangerous, resulting in a poor user experience.

[0004] Therefore, it is hoped that those skilled in the art can optimize and improve the existing electric gear shifter to completely solve the problems in the prior art and make it more convenient and safer for users to use. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an electric gear shifter with simple structure, small size, convenient use, flexible rotation, low noise, good user experience, low cost, easy maintenance and safer use.

[0006] In order to solve the above technical problems, the technical solution of the utility model is:

[0007] An electric gear shifter comprises: a gear shifter body, a differential, and an upper and lower shift rocker arm assembly, wherein the gear shifter body comprises a housing and a gear assembly, a synchronous gear ring assembly, and a shift fork arranged in the housing, wherein the gear assembly and the synchronous gear ring assembly are movably arranged on corresponding transmission shafts, respectively, and the gear assemblies are movably connected to the housing through corresponding transmission shafts, respectively, and the first end of the shift fork is movably connected to the corresponding synchronous gear ring assembly, and the upper and lower shift rocker arm assemblies are movably arranged on the outer side of the gear shifter body, and the upper and lower shift rocker arm assemblies are movably connected to the second end of the shift fork through a horizontally arranged shift fork shaft, the differential is arranged at the lower part of the gear shifter body, and the differential is meshed and connected with the corresponding gear assembly through a driven gear arranged at the outer side, a rectangular mounting groove is provided on the front side of the housing corresponding to the transmission shaft, a circular flange is horizontally provided at the middle part of the housing, and a plurality of connecting holes are penetrated through the circular flange, and a mounting plate for mounting the differential is symmetrically provided at the lower part of the housing.

[0008] In the above structure, the mounting plate is vertically extended and includes a first mounting plate and a second mounting plate. The first mounting plate and the second mounting plate both include a first movable plate and a second movable plate that are movably arranged at the lower part. The inner sides of the first mounting plate and the second mounting plate are both embedded with a first bearing. The first movable plate and the second movable plate are respectively connected with the corresponding first mounting plate and second mounting plate with bolts.

[0009] In the above structure, the upper and lower shift rocker arm assembly includes a shift bracket, upper and lower shift rocker arms, an upper rocker arm, a spring, and a spring guide rod. The shift bracket is a metal plate body with a bending structure extending from the top and side. The upper and lower shift rocker arms and the upper rocker arm are respectively located on both sides of the shift bracket. There are two springs, and the two springs are movably arranged on the corresponding spring guide rods. The lower ends of the two spring guide rods are movably connected to the upper rocker arm. The upper and lower shift rocker arms are movably connected to the upper rocker arm through a pin shaft arranged at the lower part. The upper part of the upper and lower shift rocker arms is provided with a connecting hole matching the second end of the shift fork.

[0010] In the above structure, the transmission shaft includes an input shaft, a first output shaft, and a second output shaft. The input shaft, the first output shaft, and the second output shaft are arranged in parallel. The input shaft, the first output shaft, and the second output shaft are all gear shafts. Second bearings are provided at both ends of the input shaft, the first output shaft, and the second output shaft. A plurality of tooth grooves are circumferentially embedded at one end of the input shaft, and a first bevel gear is integrally provided at the middle portion of the input shaft.

[0011] In the above structure, the first output shaft includes an integrally arranged second bevel gear, and a third bevel gear and a fourth bevel gear are movably arranged on the first output shaft. The third bevel gear and the fourth bevel gear are arranged away from the second bevel gear, and the third bevel gear is arranged corresponding to the first bevel gear, and the third bevel gear is meshingly connected with the first bevel gear.

[0012] In the above structure, the second output shaft includes a fifth bevel gear integrally arranged at one end, and a sixth bevel gear, a seventh bevel gear and the synchronous gear ring assembly are movably arranged on the second output shaft, the sixth bevel gear is arranged adjacent to the fifth bevel gear, and the sixth bevel gear and the seventh bevel gear are respectively located on both sides of the synchronous gear ring assembly.

[0013] In the above structure, the synchronous gear ring assembly includes a synchronous gear ring and a synchronous gear. The synchronous gear is arranged in the middle of the second output shaft, and the synchronous gear is movably connected to the second output shaft. The synchronous gear ring is movably arranged on the upper part of the synchronous gear. The upper part of the synchronous gear ring is embedded with an annular groove, and the annular groove matches the shift fork.

[0014] In the above structure, the shift fork is movably connected to the corresponding second output shaft, the shift fork is a Y-shaped structure, the first end of the shift fork is provided with a through hole through which the shift fork shaft passes, and the second end of the shift fork is provided with a connecting portion matching the synchronous gear ring.

[0015] In the above structure, the first bearing and the second bearing are both deep groove ball bearings, and the first bearing matches the slot provided on the mounting plate.

[0016] The beneficial effects of the utility model are:

[0017] The utility model optimizes the overall arrangement of gears and the shifting structure, making the structure simpler, the assembly more convenient, the input shaft more flexible, fundamentally eliminating the shifting jam and swaying phenomenon, and eliminating abnormal noise during operation. The utility model has a simple structure, a small size, is easy to use, and has flexible rotation, low noise, good user experience, low cost, and is easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of an embodiment of the electric gear shifter of the utility model;

[0019] Figure 2 It is a cross-sectional view of an embodiment of the electric gear shifter of the utility model;

[0020] Figure 3 This is one of the internal structure schematic diagrams of the electric gear shifter embodiment of the utility model;

[0021] Figure 4 This is the second schematic diagram of the internal structure of the electric gear shifter embodiment of the utility model;

[0022] Figure 5 It is a structural schematic diagram of an embodiment of the electric gear shifter of the utility model.

[0023] In the figure, 1-housing, 2-differential, 3-upper and lower shift rocker arm assembly, 31-shift bracket, 32-upper and lower shift rocker arm, 33-upper rocker arm, 34-spring, 35-spring guide rod, 4-shift fork, 5-shift fork shaft, 6-driven gear, 7-mounting plate, 8-input shaft, 9-first output shaft, 10-second output shaft, 11-first helical gear, 12-second helical gear, 13-third helical gear, 14-fourth helical gear, 15-fifth helical gear, 16-sixth helical gear, 17-seventh helical gear, 18-synchronizing gear ring, 19-synchronizing gear, 20-oil seal. DETAILED DESCRIPTION

[0024] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] like Figure 1-5 As shown, an electric gear shifter comprises: a gear shifter body, a differential 2, and an upper and lower gear shift rocker arm assembly 3. The gear shifter body comprises a housing 1 and a gear assembly, a synchronous gear ring assembly, and a shift fork 4 arranged in the housing 1. The gear assembly and the synchronous gear ring assembly are movably arranged on the corresponding transmission shafts, respectively. The gear assemblies are movably connected to the housing 1 through the corresponding transmission shafts, respectively. The first end of the shift fork 4 is movably connected to the corresponding synchronous gear ring assembly. The upper and lower gear shift rocker arm assembly 3 is movably arranged on the outside of the gear shifter body. The upper and lower gear shift rocker arm assembly 3 is movably connected to the second end of the shift fork 4 through a horizontally arranged shift fork shaft 5. The differential 2 is arranged at the lower part of the gear shifter body. The differential 2 is meshed and connected with the corresponding gear assembly through a driven gear 6 arranged at the outside. A rectangular mounting groove is provided on the front side of the housing 1 corresponding to the transmission shaft. A circular flange is horizontally provided in the middle part of the housing 1, and a plurality of connecting holes are penetrated through the circular flange. A mounting plate for mounting the differential is symmetrically provided at the lower part of the housing 1.

[0026] Specifically, in this embodiment, the rectangular mounting grooves and circular flanges provided on the front side and the middle of the shell 1 respectively match the mounting positions provided on the vehicle body, the rectangular mounting grooves and the circular flanges are provided with corresponding connection holes, and the shell 1 is a metal casting.

[0027] Specifically, in this embodiment, grooves for installing the oil seal 20 are embedded in the two sides of the housing 1 corresponding to the input shaft 8 , the first output shaft 9 , and the second output shaft 10 .

[0028] Specifically, in this embodiment, the differential 2 is a prior art and will not be described in detail here.

[0029] In a preferred embodiment of the utility model, the mounting plate 7 is vertically extended, and the mounting plate 7 includes a first mounting plate and a second mounting plate. The first mounting plate and the second mounting plate both include a first movable plate and a second movable plate that are movably arranged at the lower part. The inner sides of the first mounting plate and the second mounting plate are both embedded with a first bearing, and the first movable plate and the second movable plate are respectively connected with the corresponding first mounting plate and the second mounting plate by bolts.

[0030] Specifically, in this embodiment, grooves for fixing bearings are provided on the inner sides of the first mounting plate and the second mounting plate corresponding to the rotating shaft of the differential 2 .

[0031] In a preferred embodiment of the utility model, the upper and lower shift rocker arm assembly 3 includes a shift bracket 31, an upper and lower shift rocker arms 32, an upper rocker arm 33, a spring 34, and a spring guide rod 35. The shift bracket 35 is a metal plate body with a bending structure extending from the top and the side. The upper and lower shift rocker arms 32 and the upper rocker arm 33 are respectively located on both sides of the shift bracket 31. There are two springs 34, and the two springs 34 are movably arranged on the corresponding spring guide rods 35. The lower ends of the two spring guide rods 35 are movably connected to the upper rocker arm 33. The upper and lower shift rocker arms 32 are movably connected to the upper rocker arm 33 through a pin shaft arranged at the lower part. The upper part of the upper and lower shift rocker arms 32 is provided with a connecting hole matching the second end of the shift fork 4.

[0032] Specifically, in this embodiment, the gear shift bracket 35 is provided with a connecting hole matching the side surface of the housing 1 .

[0033] In a preferred embodiment of the utility model, the transmission shaft includes an input shaft 8, a first output shaft 9, and a second output shaft 10. The input shaft 8, the first output shaft 9, and the second output shaft 10 are arranged in parallel. The input shaft 8, the first output shaft 9, and the second output shaft 10 are all gear shafts. Second bearings are provided at both ends of the input shaft 8, the first output shaft 9, and the second output shaft 10. One end of the input shaft 8 is circumferentially embedded with a plurality of tooth grooves, and a first bevel gear 11 is integrally provided in the middle of the input shaft 8.

[0034] Specifically, in this embodiment, a clamping groove for fixing the second bearing and a limiting groove for installing the sealing cover are respectively provided on two sides of the housing 1 corresponding to the input shaft 8, the first output shaft 9, and the second output shaft 10.

[0035] In a preferred embodiment of the utility model, the first output shaft 9 includes an integrally arranged second bevel gear 12, and a third bevel gear 13 and a fourth bevel gear 14 are movably arranged on the first output shaft 9. The third bevel gear 13 and the fourth bevel gear 14 are arranged away from the second bevel gear 12, and the third bevel gear 13 is arranged corresponding to the first bevel gear 11, and the third bevel gear 13 is meshingly connected with the first bevel gear 11.

[0036] Specifically, in this embodiment, the first output shaft 9 and the input shaft 8 are driven by correspondingly arranged third bevel gears 13 and first bevel gears 11 .

[0037] In a preferred embodiment of the utility model, the second output shaft 10 includes a fifth bevel gear 15 integrally arranged at one end, and a sixth bevel gear 16, a seventh bevel gear 17 and a synchronous gear ring assembly are movably provided on the second output shaft 10, and the sixth bevel gear 16 is arranged adjacent to the fifth bevel gear 15, and the sixth bevel gear 16 and the seventh bevel gear 17 are respectively located on both sides of the synchronous gear ring assembly.

[0038] Specifically, in this embodiment, the second output shaft 10 is a stepped shaft, and a slot for fixing the sixth bevel gear 16 , the seventh bevel gear 17 and the synchronous gear ring assembly is embedded in the second output shaft 10 .

[0039] Specifically, in this embodiment, the sixth bevel gear 16 is meshed and connected with the fourth bevel gear 14 , and the fifth bevel gear 15 is meshed and connected with the driven gear 6 .

[0040] In a preferred embodiment of the present invention, the synchronous gear ring assembly includes a synchronous gear ring 18 and a synchronous gear 19. The synchronous gear 19 is arranged in the middle of the second output shaft 10. The synchronous gear 19 is movably connected to the second output shaft 10. The synchronous gear ring 18 is movably arranged on the upper part of the synchronous gear 19. The upper part of the synchronous gear ring 18 is embedded with an annular groove, and the annular groove matches the shift fork 4.

[0041] Specifically, in this embodiment, the synchronous gear ring assembly is movably disposed in the middle of the second output shaft 10 , the shift fork 4 is movably disposed on the upper portion of the synchronous gear ring assembly, and the shift fork 4 is movably connected to the annular groove on the upper portion of the synchronous gear ring 18 .

[0042] In a preferred embodiment of the utility model, the shift fork 4 is movably connected to the corresponding second output shaft 10, the shift fork 4 is a Y-shaped structure, the first end of the shift fork 4 is provided with a through hole through which the shift fork shaft 5 passes, and the second end of the shift fork 4 is provided with a connecting portion matching the synchronous gear ring 18.

[0043] Specifically, in this embodiment, the shift fork 4 is made of No. 45 steel.

[0044] In a preferred embodiment of the present invention, the first bearing and the second bearing are both deep groove ball bearings, and the first bearing matches the slot provided on the mounting plate 7 .

[0045] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. An electric gear shifter, comprising: The gear shifter body, differential, and upper and lower shift rocker arm assembly are characterized in that the gear shifter body includes a housing and a gear assembly, a synchronous gear ring assembly, and a shift fork arranged in the housing, the gear assembly and the synchronous gear ring assembly are respectively movably arranged on the corresponding transmission shaft, the gear assembly is movably connected to the housing through the corresponding transmission shaft, the first end of the shift fork is movably connected to the corresponding synchronous gear ring assembly, the upper and lower shift rocker arm assembly is movably arranged on the outside of the gear shifter body, the upper and lower shift rocker arm assembly is movably connected to the second end of the shift fork through a horizontally arranged shift fork shaft, the differential is arranged at the lower part of the gear shifter body, the differential is meshed and connected with the corresponding gear assembly through a driven gear arranged at the outside, a rectangular mounting groove is provided on the front side of the housing corresponding to the transmission shaft, a circular flange is horizontally provided in the middle part of the housing, a plurality of connecting holes are penetrated through the circular flange, and a differential mounting plate is symmetrically provided at the lower part of the housing for mounting the differential.

2. The electric gear shifter according to claim 1, characterized in that: The mounting plate is vertically extended, and includes a first mounting plate and a second mounting plate. The first mounting plate and the second mounting plate both include a first movable plate and a second movable plate that are movably arranged at the lower part. The inner sides of the first mounting plate and the second mounting plate are both embedded with a first bearing. The first movable plate and the second movable plate are respectively connected with the corresponding first mounting plate and second mounting plate by bolts.

3. The electric gear shifter according to claim 2, characterized in that: The upper and lower shift rocker arm assembly includes a shift bracket, upper and lower shift rocker arms, an upper rocker arm, a spring, and a spring guide rod. The shift bracket is a metal plate body with a bending structure extending from the top and side. The upper and lower shift rocker arms and the upper rocker arm are respectively located on both sides of the shift bracket. There are two springs, and the two springs are movably arranged on the corresponding spring guide rods. The lower ends of the two spring guide rods are movably connected to the upper rocker arm. The upper and lower shift rocker arms are movably connected to the upper rocker arm via a pin shaft arranged at the lower part. The upper part of the upper and lower shift rocker arms is provided with a connecting hole matching the second end of the shift fork.

4. The electric gear shifter according to claim 3, characterized in that: The transmission shaft includes an input shaft, a first output shaft, and a second output shaft. The input shaft, the first output shaft, and the second output shaft are arranged in parallel. The input shaft, the first output shaft, and the second output shaft are all gear shafts. Second bearings are provided at both ends of the input shaft, a plurality of tooth grooves are circumferentially embedded at one end of the input shaft, and a first bevel gear is integrally provided at the middle portion of the input shaft.

5. The electric gear shifter according to claim 4, characterized in that: The first output shaft includes an integrally arranged second helical gear, and a third helical gear and a fourth helical gear are movably arranged on the first output shaft. The third helical gear and the fourth helical gear are arranged away from the second helical gear, and the third helical gear is arranged corresponding to the first helical gear, and the third helical gear is meshingly connected with the first helical gear.

6. The electric gear shifter according to claim 5, characterized in that: The second output shaft includes a fifth bevel gear integrally arranged at one end, and a sixth bevel gear, a seventh bevel gear and the synchronous gear ring assembly are movably arranged on the second output shaft, the sixth bevel gear is arranged adjacent to the fifth bevel gear, and the sixth bevel gear and the seventh bevel gear are respectively located on both sides of the synchronous gear ring assembly.

7. The electric gear shifter according to claim 6, characterized in that: The synchronous gear ring assembly includes a synchronous gear ring and a synchronous gear. The synchronous gear is arranged in the middle of the second output shaft, and the synchronous gear is movably connected to the second output shaft. The synchronous gear ring is movably arranged on the upper part of the synchronous gear. An annular groove is embedded in the upper part of the synchronous gear ring, and the annular groove matches the shift fork.

8. The electric gear shifter according to claim 7, characterized in that: The shift fork is movably connected to the corresponding second output shaft. The shift fork is a Y-shaped structure. The first end of the shift fork is provided with a through hole through which the shift fork shaft passes. The second end of the shift fork is provided with a connecting portion that matches the synchronous gear ring.

9. The electric gear shifter according to claim 4, characterized in that: The first bearing and the second bearing are both deep groove ball bearings, and the first bearing matches the slot provided on the mounting plate.

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