CN113738831A - Two-gear transmission for new energy automobile - Google Patents

Two-gear transmission for new energy automobile Download PDF

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Publication number
CN113738831A
CN113738831A CN202111315239.4A CN202111315239A CN113738831A CN 113738831 A CN113738831 A CN 113738831A CN 202111315239 A CN202111315239 A CN 202111315239A CN 113738831 A CN113738831 A CN 113738831A
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China
Prior art keywords
gear
driving gear
shaft body
shifting
assembly
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Granted
Application number
CN202111315239.4A
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Chinese (zh)
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CN113738831B (en
Inventor
陆林生
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Hangzhou Qiyu Technology Co ltd
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Hangzhou Qiyu Technology Co ltd
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Publication of CN113738831A publication Critical patent/CN113738831A/en
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Publication of CN113738831B publication Critical patent/CN113738831B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H3/083—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts with radially acting and axially controlled clutching members, e.g. sliding keys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/0006—Vibration-damping or noise reducing means specially adapted for gearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
    • F16H57/0416—Air cooling or ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04—Smoothing ratio shift
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/08—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts
    • F16H2003/0818—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially with continuously meshing gears, that can be disengaged from their shafts comprising means for power-shifting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04—Smoothing ratio shift
    • F16H2061/0474—Smoothing ratio shift by smoothing engagement or release of positive clutches; Methods or means for shock free engagement of dog clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H2063/3089—Spring assisted shift, e.g. springs for accumulating energy of shift movement and release it when clutch teeth are aligned
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H2063/3093—Final output elements, i.e. the final elements to establish gear ratio, e.g. dog clutches or other means establishing coupling to shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/0021—Transmissions for multiple ratios specially adapted for electric vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H2200/00—Transmissions for multiple ratios
    • F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
    • F16H2200/0034—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising two forward speeds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Structure Of Transmissions (AREA)

Abstract

The invention discloses a two-gear transmission for a new energy automobile, belonging to the field of new energy automobile transmissions, and the device comprises: the novel energy automobile battery power transmission device comprises a first box body and a first shaft body, wherein the first shaft body sequentially penetrates through two opposite side surfaces of the first box body, a joint is provided with a bearing, a second driving gear and a first driving gear which are respectively positioned in the two opposite inner wall directions of the first box body are arranged on the first shaft body, a gear shifting assembly capable of sliding is arranged on the first shaft body between the second driving gear and the first driving gear, the second shaft body is parallel to the axis of the first shaft body, and a third driven gear meshed with the second driving gear and a fourth driven gear meshed with the first driving gear are arranged on the second shaft body.

Description

Two-gear transmission for new energy automobile
Technical Field
The invention belongs to the field of new energy automobile transmissions, and particularly relates to a two-gear transmission for a new energy automobile.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
In recent years, due to the increasing environmental problems and the rising oil prices, more and more countries and entire factories have started to pay attention to the development of pure electric vehicles. The pure electric vehicle is used as an important component of a new energy vehicle. The power transmission system is used as a core part of the pure electric vehicle, and has great influence on the dynamic property and the economical efficiency of the whole vehicle. Therefore, one of the important means for improving the performance of the electric automobile is to reasonably select the components of the power transmission system and improve the efficiency of the power transmission system. The transmission is used as a key part of a power transmission system and plays a crucial role in the overall vehicle performance. The main reducer of the transmission system of the mainstream automobile type of the traditional pure electric automobile generally adopts a single-stage transmission, the transmission with the structure can only provide a fixed reduction ratio, the reduction ratio cannot be adjusted by changing gears aiming at various running states of the whole automobile in use, the output rotating speed and the output torque of a traction motor are difficult to be adjusted adaptively, and the traction motor usually stays in a high-load running state for a long time due to the fact that the traction motor is usually in a working low-efficiency area, so that the problems of reduction of driving mileage and obvious insufficient cruising ability caused by increase of battery energy loss are caused.
It should be noted that the above background description is only for the convenience of clear and complete description of the technical solutions of the present application and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present application.
Disclosure of Invention
The invention aims to provide a two-gear transmission for a new energy automobile, which can reduce the energy loss of a new energy automobile battery, increase the cruising ability, reduce the structural complexity and the manufacturing process requirement of the transmission and reduce the development difficulty and the manufacturing cost of a traction motor by adjusting the reduction ratio through gear shifting.
The technical scheme adopted by the invention for realizing the purpose is as follows: a two speed transmission for new energy automobile includes:
a first box body, a second box body and a third box body,
a first shaft body, the first shaft body sequentially passes through two opposite side surfaces of the first box body, a bearing is arranged at the joint of the first shaft body and the first shaft body, a second driving gear and a first driving gear which are respectively positioned at the two opposite inner wall directions of the first box body are arranged on the first shaft body, a gear shifting assembly capable of sliding is arranged on the first shaft body between the second driving gear and the first driving gear,
a second shaft body, the second shaft body sequentially passes through two opposite side surfaces of the first box body, a bearing is arranged at the joint of the second shaft body and the first shaft body, the second shaft body is arranged in parallel with the axis of the first shaft body, a third driven gear meshed with the second driving gear and a fourth driven gear meshed with the first driving gear are arranged on the second shaft body,
the gear shifting assembly is provided with a second connecting assembly matched with the first connecting block, and two ends of the second connecting assembly are provided with second connecting moving blocks capable of stretching out and drawing back.
First link block is the arc piece, and second coupling assembling can form butt or separation with first link block. A gear shifting controller matched with the gear shifting assembly is arranged in the first box body.
The invention can select a driving gear and a corresponding driven gear to transmit the power of the first shaft body to the second shaft body under the control of the gear shifting assembly, thus realizing that users and systems select different transmission ratios to switch automobile gears by designing the transmission ratio between the driving gear and the driven gear, effectively playing the performance of the electric automobile under different gear states, and particularly, the designed driving gear and the driven gear form two gears, compared with a single-stage speed reducer, the design scheme of the invention can select different gears under different working conditions of a new energy automobile, for example, the problem that the single-stage speed reducer cannot realize the output of higher torque under the climbing working condition of the new energy automobile is solved, and the increase of driving torque can be realized by switching the gears to a low-speed mode so as to solve the climbing problem of the existing single-stage speed reducer about the automobile and the climbing jitter problem, even if the climbing performance of the new energy automobile is improved, the problem that the size of a single-stage speed reducer is continuously increased in the manufacturing process of the new energy automobile is solved, and the scheme is favorable for controlling the output transmission efficiency under different working conditions through designing a two-gear scheme, so that the power performance, the driving mileage and the economy of the automobile can be effectively improved.
According to one embodiment of the invention, the gear shifting assembly comprises a first gear shifting base body capable of sliding on a first shaft body, the middle part of the first gear shifting base body is provided with an assembling through hole with the same diameter as the first shaft body, the hole wall of the assembling through hole is provided with a second key groove, the first shaft body between a second driving gear and a first driving gear is provided with a key groove and is internally provided with an assembling key block capable of being matched with the key groove and the second key groove,
the second that can slide relative primary shaft body is established to first base member both sides of shifting shifts the ring body, and the second shifts the ring body side and is connected with the first ring body of shifting through encircleing the connection stiffener of laying, and the first ring body side of shifting is equipped with second coupling assembling.
The gear shifting component can be driven to slide on the first shaft body under the control of the gear shifting controller, so that the second connecting component at the side of the gear shifting component is controlled to be separated from or abutted against the first connecting block at the side of the driving gear, the power is transmitted to any driving gear, the first gear shifting base body of the gear shifting component is provided with an assembling through hole and a second key slot for realizing that the first gear shifting base body can slide along the assembling key block assembled on the first shaft body, the first shaft body transmits the transmission force to the first gear shifting base body through the assembling key block to enable the first gear shifting base body to rotate and synchronously drive the first gear shifting ring body and the second gear shifting ring body at the side of the first shaft body and the second connecting component to rotate, and further the second connecting component and the first connecting block at the side of the driving gear are separated or abutted to control which driving gear to transmit the power to select the transmission ratio, namely, a high-speed gear or a low-speed gear is selected for output, so that a proper gear is selected according to different new energy forming working conditions or road conditions, and the continuation of the journey mileage of the new energy automobile is promoted.
Wherein, the present case has designed the mode that first ring body and the second shifted the ring body and can shift first shift and form the space between the ring body with the second, reduce coupling assembling and first connecting block contact production of heat and with the heat of first ring body direction of shifting to the second ring body direction transmission of shifting under the circumstances of guaranteeing transmission efficiency, reduce heat transfer promptly and shift to first base member and the second and shift the ring body in order to guarantee the normal contact of subassembly and the gear shift controller and the controller operational environment temperature of shifting, still reduce the expend with heat and contract with cold condition of first base member and the second of shifting the ring body of shifting in order to guarantee its and the assembly tightness of first shaft body and assembly key piece, avoid the fit-up gap to appear causing vibration or noise.
According to one embodiment of the invention, the second driving gear and the first driving gear are respectively assembled with the first shaft body through the first bearing ring, the first shaft body is provided with an assembling ring groove for assembling the first bearing ring, the assembling ring groove is designed to facilitate the assembling of the first bearing ring and prevent the first bearing ring from sliding in the using process, and necessary limiting parts such as clamping rings and the like can be arranged on two sides of the first bearing ring.
The design of first bearing ring is used for realizing, and when second driving gear or first driving gear not with the cooperation work of gearshift subassembly, the driving gear is idle running state rather than corresponding driven gear, guarantees the driving gear with the cooperation work of gearshift subassembly and driven gear output efficiency who meshes also is favorable to gear transmission error to be reduced.
According to an embodiment of the present invention, the second connecting assembly includes a second connecting base, a second sliding cavity is formed in the second connecting base, through holes for the second connecting moving block to slide are formed at two ends of the second connecting base, a second supporting fixed block is fixedly disposed in the second sliding cavity, the second connecting moving block is disposed at two ends of the second supporting fixed block, an elastic member is filled between the second connecting moving block and the second supporting fixed block, and a second spring is disposed between the second connecting moving block and an inner wall of the second sliding cavity.
The second connecting moving blocks arranged at the two ends of the second connecting component are used for abutting against the first connecting blocks, the first connecting block is driven to rotate in this way, so as to synchronously drive the driving gear connected with the first connecting block to rotate, when the second connecting moving block is abutted against the first connecting block, the moment when the second connecting moving block is contacted with the first connecting block has huge impact force, the impact force is absorbed by the designed elastic piece, the gear shifting is not impacted, the condition of tooth burning or severe tooth beating in the gear shifting process can be reduced, and after the impact is transferred to the adjacent elastic piece when the second connecting moving block is contacted with the first connecting block, the second connecting moving block is also provided with a second spring to enable the second connecting moving block to form proper slippage, the second connection moving block can properly slide relative to the second sliding cavity, so that the gear shifting impact can be reduced, and the gear shifting smoothness is ensured.
According to an embodiment of the present invention, an auxiliary connecting member is disposed between the two connecting reinforcing rods, the auxiliary connecting member is disposed between the first shifting ring body and the second shifting ring body, the connecting reinforcing rods pass through the auxiliary connecting member, the auxiliary connecting member is disposed in a hollow manner, and an auxiliary circulation hole communicating with the hollow chamber is formed in a side wall of the auxiliary connecting member. The preferred heat insulating material of auxiliary connection spare, the auxiliary connection spare design is used for improving the first ring body and the second ring body support of shifting to both sides, and further reduce the temperature transmission through auxiliary connection spare, the auxiliary connection spare design can reduce the energy loss of the rotatory in-process of first ring body and the second ring body of shifting for hollow structure, auxiliary connection spare can drive the flow of its near air current relatively along with connecting the stiffener rotation in-process, be favorable to driving the flow of the near air current of subassembly of shifting and help the heat dissipation, reduce near first ring body and the second ring body temperature of shifting, and set up the mode of supplementary opening on auxiliary connection spare and be favorable to utilizing its hollow structure to absorb the noise of the in-process of shifting, the noise is reduced.
According to an embodiment of the present invention, a traction motor connected to the first shaft is disposed outside the first casing, and is used for inputting power to the first shaft.
According to an embodiment of the present invention, the second shift ring body and the first shift ring body are respectively provided with a second key slot and an assembling through hole. For achieving a smooth sliding movement with the first shift base body on the assembly key block.
Compared with the prior art, the invention has the beneficial effects that: compared with a single-stage speed reducer, the design scheme of the invention can select different gears under different working conditions of the new energy automobile, for example, the problem that the single-stage speed reducer cannot output higher torque under the climbing working condition of the new energy automobile is solved, the driving torque can be increased by switching the gears to a low-speed mode so as to solve the climbing problem of the existing single-stage speed reducer and the possible climbing jitter problem of the existing single-stage speed reducer, and even if the climbing performance of the new energy automobile is improved, the problem that the size of the single-stage speed reducer is continuously increased in the manufacturing process of the new energy automobile is avoided, and the design of a two-gear scheme is favorable for regulating and outputting the transmission efficiency under different working conditions, so that the power performance, the driving mileage and the economy of the automobile can be effectively improved.
Drawings
FIG. 1 is a simplified schematic diagram of a two-speed transmission for a new energy vehicle in use;
FIG. 2 is a schematic diagram of a two speed transmission for a new energy vehicle;
FIG. 3 is a schematic view of the engagement of the driving and driven gears and the shifting unit on the first shaft and the second shaft;
FIG. 4 is a schematic view of the driving and driven gears and their engagement on the first shaft and the second shaft;
FIG. 5 is a schematic structural view of the first shaft;
FIG. 6 is a schematic structural view of the shift assembly;
FIG. 7 is a partial component schematic view of the shift assembly;
FIG. 8 is a schematic view showing the connection state of the auxiliary connecting member and the connection reinforcing bar;
FIG. 9 is a schematic view of a second connecting assembly;
FIG. 10 is a schematic view of the internal structure of the second connecting assembly;
fig. 11 is an assembly view of the auxiliary connection ring and the first driving gear.
Reference numerals: 10-a traction motor; 20-a first box; 21-a first drive gear; 22-a second drive gear; 23-a third driven gear; 24-a fourth driven gear; 25-a first bearing ring; 30-a shift controller; 40-a first shaft body; 41-a keyway; 42-assembly key block; 43-assembling ring grooves; 50-a second shaft body; 60-a shifting assembly; 61-a first shift ring body; 62-a second shift ring body; 63-connecting reinforcing rods; 64-first shift base; 65-a second connection assembly; 651-second connection base; 652-a second connecting movement block; 653-a second sliding cavity; 654-an elastic member; 655-second support fixing block; 656-a second spring; 66-a second keyway; 67-assembly through holes; 70-a first connection block; 80-auxiliary connections; 81-auxiliary flow holes; 90-auxiliary connecting ring body.
Detailed Description
The technical solution of the present invention is further described in detail below with reference to the following detailed description and the accompanying drawings:
example 1:
referring to the accompanying drawings 1-4, the two-gear transmission for the new energy automobile comprises:
the first casing 20 is provided with a first opening,
a first shaft 40, the first shaft 40 sequentially passes through two opposite sides of the first case 20 and the joint is provided with a bearing, the first shaft 40 is provided with a second driving gear 22 and a first driving gear 21 which are respectively positioned at two opposite inner wall directions of the first case 20, the first shaft 40 between the second driving gear 22 and the first driving gear 21 is provided with a gear shifting assembly 60 which can slide,
a second shaft 50, the second shaft 50 sequentially passes through two opposite side surfaces of the first box 20 and the joint is provided with bearings, the second shaft 50 is arranged parallel to the axis of the first shaft 40, the second shaft 50 is provided with a third driven gear 23 meshed with the second driving gear 22 and a fourth driven gear 24 meshed with the first driving gear 21,
the first connecting block 70 is disposed on the opposite surface of the second driving gear 22 and the first driving gear 21, the shift assembly 60 has a second connecting assembly 65 disposed with the first connecting block 70, and the second connecting assembly 65 has a second connecting moving block 652 at both ends thereof, which is capable of extending and contracting.
The first link block 70 is an arc-shaped block, and the second link assembly 65 can be brought into abutment with or separated from the first link block 70. The first housing 20 houses a shift controller 30 associated with the shift assembly 60.
Compared with a single-stage speed reducer, the design scheme of the invention can select different gears under different working conditions of the new energy automobile, for example, the problem that the single-stage speed reducer cannot output higher torque under the climbing working condition of the new energy automobile is solved, the driving torque can be increased by switching the gears to a low-speed mode so as to solve the climbing problem of the existing single-stage speed reducer and the possible climbing jitter problem of the existing single-stage speed reducer, and even if the climbing performance of the new energy automobile is improved, the problem that the size of the single-stage speed reducer is continuously increased in the manufacturing process of the new energy automobile is avoided, and the design of a two-gear scheme is favorable for regulating and outputting the transmission efficiency under different working conditions, so that the power performance, the driving mileage and the economy of the automobile can be effectively improved.
Referring to the description of fig. 6, the shift assembly 60 includes a first shift base 64 capable of sliding on the first shaft 40, a middle portion of the first shift base 64 is formed with an assembling through hole 67 having a diameter equal to that of the first shaft 40, a hole wall of the assembling through hole 67 is formed with a second key groove 66, the first shaft 40 between the second driving gear 22 and the first driving gear 21 is formed with a key groove 41 and is provided with an assembling key block 42 capable of being matched with the key groove 41 and the second key groove 66,
the second that can slide relative first axis body 40 is established to first shift base member 64 both sides and is shifted ring body 62, and the second is shifted ring body 62 side and is connected with first ring body 61 of shifting through encircleing the connection stiffener 63 of laying, and first ring body 61 side of shifting is equipped with second coupling assembling 65.
The gear shifting assembly 60 can be driven to slide on the first shaft body 40 under the control of the gear shifting controller 30, so as to control the separation or abutting state of the second connecting assembly 65 at the side of the gear shifting assembly 60 and the first connecting block 70 at the side of the driving gear, so as to realize the power transmission to any driving gear, an assembly through hole 67 and a second key slot 66 are formed on the first gear shifting base body 64 of the gear shifting assembly 60, so as to realize the sliding state of the first gear shifting base body 64 along the assembly key block 42 assembled on the first shaft body 40, and realize the transmission of the transmission force of the first shaft body 40 to the first gear shifting base body 64 through the assembly key block 42, so that the first gear shifting base body 64 rotates and synchronously drives the first gear shifting ring body 61 and the second gear shifting ring body 62 at the side thereof and the rotation of the second connecting assembly 65, so as to realize the separation or abutting state of the second connecting assembly 65 and the first connecting block 70 at the side of the driving gear to control which driving gear the power is transmitted to the driving gear, and then select the drive ratio, select high-speed gear or low-speed gear output promptly to realize selecting suitable gear according to different new forms of energy operating mode or road conditions, be favorable to new energy automobile's continuation of the journey mileage to promote.
Referring to the description of fig. 4, the second driving gear 22 and the first driving gear 21 are respectively assembled with the first shaft body 40 through the first bearing ring 25, an assembly ring groove 43 for assembling the first bearing ring 25 is formed in the first shaft body 40, the assembly ring groove 43 is designed to facilitate the assembly of the first bearing ring 25, meanwhile, the first bearing ring 25 is prevented from slipping in the using process, and necessary limiting parts such as collars can be arranged on two sides of the first bearing ring 25.
The first bearing ring 25 is designed to realize that when the second driving gear 22 or the first driving gear 21 does not cooperate with the gear shift assembly 60, the driving gear and the corresponding driven gear are in an idle rotation state, so that the output efficiency of the driving gear cooperating with the gear shift assembly 60 and the output efficiency of the driven gear engaged with the driving gear are ensured, and the reduction of the gear transmission error is facilitated.
Referring to fig. 9-10 in the specification, the second connecting assembly 65 includes a second connecting base 651, a second sliding cavity 653 is formed in the second connecting base 651, through holes for sliding the second connecting moving block 652 are formed at two ends of the second connecting base 651, a second supporting fixed block 655 is fixedly disposed in the second sliding cavity 653, the second connecting moving block 652 is disposed at two ends of the second supporting fixed block 655, an elastic member 654 is filled between the second connecting moving block 652 and the second sliding cavity 653, and a second spring 656 is disposed between the second connecting moving block 652 and an inner wall of the second sliding cavity 653.
The second connecting moving block 652 provided at both ends of the second connecting assembly 65 is used for abutting against the first connecting block 70, so as to drive the first connecting block 70 to rotate and further synchronously drive the driving gear connected with the first connecting block 70 to rotate, during the abutting process of the second connecting moving block 652 and the first connecting block 70, the moment when the second connecting moving block 652 and the first connecting block 70 contact has a huge impact force, the impact force is absorbed by the designed elastic member 654, the impact force is not used for shifting gears, the tooth burning or tooth violent striking during the shifting process can be reduced, and after the impact is transmitted to the adjacent elastic member 654 during the contacting process of the second connecting moving block 652 and the first connecting block 70, the second connecting moving block 652 is further provided with the second spring 656 to make it form a proper slip, that is, the proper slip of the second connecting moving block 652 relative to the second slip cavity 653 can be realized, therefore, gear shifting impact can be reduced, and gear shifting smoothness is guaranteed.
Referring to fig. 6 to 8 of the specification, an auxiliary connecting member 80 is disposed between the two connecting reinforcing rods 63, the auxiliary connecting member 80 is disposed between the first shifting ring body 61 and the second shifting ring body 62, the connecting reinforcing rods 63 penetrate through the auxiliary connecting member 80, the auxiliary connecting member 80 is hollow, and an auxiliary flow through hole 81 communicating with the hollow chamber is formed in a side wall of the auxiliary connecting member 80. The auxiliary connecting piece 80 is preferably made of a heat insulation material, the auxiliary connecting piece 80 is designed to be used for improving the support of the first shifting ring body 61 and the second shifting ring body 62 on two sides, the temperature transmission is further reduced through the auxiliary connecting piece 80, the auxiliary connecting piece 80 is designed to be a hollow structure, the energy loss in the rotating process of the first shifting ring body 61 and the second shifting ring body 62 can be reduced, the auxiliary connecting piece 80 can relatively drive the flow of air flow nearby the auxiliary connecting piece in the rotating process of the connecting reinforcing rod 63, the flow of the air flow nearby the shifting assembly 60 can be favorably driven to contribute to heat dissipation, the temperature nearby the first shifting ring body 61 and the second shifting ring body 62 can be reduced, and the auxiliary connecting piece 80 is provided with the auxiliary flow through holes 81, so that the noise in the shifting process can be favorably absorbed through the hollow structure, and the noise is reduced.
The traction motor 10 connected with the first shaft 40 is arranged outside the first box 20, and is used for inputting power to the first shaft 40.
Referring to the description and the attached fig. 5, the second shift ring 62 and the first shift ring 61 are respectively provided with a second key slot 66 and a fitting through hole 67. For smooth sliding movement with the first shift base 64 on the mounting key 42.
Example 2:
the further optimization scheme of the embodiment based on the embodiment 1 is as follows: referring to the attached drawing 11 of the specification, an auxiliary connection ring 90 is disposed on a side of the first driving gear 21 where the first connection block 70 is installed, the first connection block 70 is connected to a side of the first driving gear 21 through a fastener, the auxiliary connection ring 90 is disposed between the first connection block 70 and a side where the first driving gear 21 is connected, a non-connection portion of the auxiliary connection ring 90 and the first connection block 70 is bent upward, and a bottom surface of the ring is connected to a side of the first driving gear 21 through a spring.
The side that first connecting block 70 was installed to second driving gear 22 is equipped with auxiliary connection ring body 90, first connecting block 70 passes through the fastener and is connected with second driving gear 22 side, auxiliary connection ring body 90 is located between first connecting block 70 and the second driving gear 22 side of being connected, auxiliary connection ring body 90 upwards bends the setting with first connecting block 70 non-junction, and the ring body bottom surface passes through the spring and is connected with second driving gear 22 side.
When the auxiliary connection ring 90 is arranged on the opposite surface of the first driving gear 21 and the second driving gear 22 to match the second connection assembly 65 with the first connection block 70, the direct impact between the side surface of the second connection assembly 65 and the side surfaces of the first driving gear 21 and the second driving gear 22 is avoided at the moment that the second connection assembly 65 is in butt fit with the first connection block 70, the opposite buffering effect is achieved through the auxiliary connection ring 90, and the direct impact between the side surface of the second connection assembly 65 and the side surfaces of the first driving gear 21 and the second driving gear 22 is further reduced by arranging a spring, so that impact-free gear shifting and two-time abrasion reduction are realized.
Example 3:
referring to the accompanying drawings 1-4, the two-gear transmission for the new energy automobile comprises:
the first casing 20 is provided with a first opening,
a first shaft 40, the first shaft 40 sequentially passes through two opposite sides of the first case 20 and the joint is provided with a bearing, the first shaft 40 is provided with a second driving gear 22 and a first driving gear 21 which are respectively positioned at two opposite inner wall directions of the first case 20, the first shaft 40 between the second driving gear 22 and the first driving gear 21 is provided with a gear shifting assembly 60 which can slide,
a second shaft 50, the second shaft 50 sequentially passes through two opposite side surfaces of the first box 20 and the joint is provided with bearings, the second shaft 50 is arranged parallel to the axis of the first shaft 40, the second shaft 50 is provided with a third driven gear 23 meshed with the second driving gear 22 and a fourth driven gear 24 meshed with the first driving gear 21,
the first connecting block 70 is disposed on the opposite surface of the second driving gear 22 and the first driving gear 21, the shift assembly 60 has a second connecting assembly 65 disposed with the first connecting block 70, and the second connecting assembly 65 has a second connecting moving block 652 at both ends thereof, which is capable of extending and contracting.
The first link block 70 is an arc-shaped block, and the second link assembly 65 can be brought into abutment with or separated from the first link block 70. The first housing 20 houses a shift controller 30 associated with the shift assembly 60.
According to the invention, the first shaft body 40 is designed to be connected with the traction motor 10, so that the output power of the traction motor can be transmitted to the first shaft body 40, the first shaft body 40 is provided with the second driving gear 22 and the first driving gear 21 for transmitting the output power of the traction motor 10 to the second shaft body 50 for output, the upper part of the second shaft body 50 is provided with the third driven gear 23 and the fourth driven gear 24 which are correspondingly arranged with the second driving gear 22 and the first driving gear 21, a driving gear and a corresponding driven gear can be selected to transmit the power of the first shaft body 40 to the second shaft body 50 under the control of the gear shifting assembly 60, so that users and systems can select different transmission ratios to switch automobile gears by designing the transmission ratio between the driving gear and the driven gear, the performance of the electric automobile can be effectively exerted under different gear states, and particularly, the designed driving gear and driven gear form two gears, compared with a single-stage speed reducer, the design scheme of the invention can select different gears under different working conditions of a new energy automobile, for example, solves the problem that the single-stage speed reducer cannot realize the output of higher torque under the climbing working condition of the new energy automobile, can realize the increase of driving torque by switching the gears to a low-speed gear mode so as to solve the problems of climbing of the automobile and possible climbing shake of the existing single-stage speed reducer, even if the climbing performance of the new energy automobile is improved, the problem that the size of a single-stage speed reducer is continuously increased in the manufacturing process of the new energy automobile is solved, and the scheme is favorable for controlling the output transmission efficiency under different working conditions through designing a two-gear scheme, so that the power performance, the driving mileage and the economy of the automobile can be effectively improved.
Referring to the description of fig. 6, the shift assembly 60 includes a first shift base 64 capable of sliding on the first shaft 40, a middle portion of the first shift base 64 is formed with an assembling through hole 67 having a diameter equal to that of the first shaft 40, a hole wall of the assembling through hole 67 is formed with a second key groove 66, the first shaft 40 between the second driving gear 22 and the first driving gear 21 is formed with a key groove 41 and is provided with an assembling key block 42 capable of being matched with the key groove 41 and the second key groove 66,
the second that can slide relative first axis body 40 is established to first shift base member 64 both sides and is shifted ring body 62, and the second is shifted ring body 62 side and is connected with first ring body 61 of shifting through encircleing the connection stiffener 63 of laying, and first ring body 61 side of shifting is equipped with second coupling assembling 65.
The gear shifting assembly 60 can be driven to slide on the first shaft body 40 under the control of the gear shifting controller 30, so as to control the separation or abutting state of the second connecting assembly 65 at the side of the gear shifting assembly 60 and the first connecting block 70 at the side of the driving gear, so as to realize the power transmission to any driving gear, an assembly through hole 67 and a second key slot 66 are formed on the first gear shifting base body 64 of the gear shifting assembly 60, so as to realize the sliding state of the first gear shifting base body 64 along the assembly key block 42 assembled on the first shaft body 40, and realize the transmission of the transmission force of the first shaft body 40 to the first gear shifting base body 64 through the assembly key block 42, so that the first gear shifting base body 64 rotates and synchronously drives the first gear shifting ring body 61 and the second gear shifting ring body 62 at the side thereof and the rotation of the second connecting assembly 65, so as to realize the separation or abutting state of the second connecting assembly 65 and the first connecting block 70 at the side of the driving gear to control which driving gear the power is transmitted to the driving gear, and then select the drive ratio, select high-speed gear or low-speed gear output promptly to realize selecting suitable gear according to different new forms of energy operating mode or road conditions, be favorable to new energy automobile's continuation of the journey mileage to promote.
The mode that the first gear shifting ring body 61 and the second gear shifting ring body 62 are designed in the scheme can enable a space to be formed between the first gear shifting ring body 61 and the second gear shifting ring body 62, under the condition that the transmission efficiency is guaranteed, the heat generated by the contact of the connecting assembly 65 and the first connecting block 70 and the heat in the direction of the first gear shifting ring body 61 are reduced to be transmitted to the direction of the second gear shifting ring body 62, namely, the heat is reduced to be transmitted to the first gear shifting base body 64 and the second gear shifting ring body 62 to guarantee the normal contact of the gear shifting assembly 60 and the gear shifting controller 30 and the working environment temperature of the gear shifting controller 30, the expansion caused by heat and the contraction caused by cold of the first gear shifting base body 64 and the second gear shifting ring body 62 are reduced to guarantee the assembling tightness of the first gear shifting base body 40 and the assembling key block 42, and the occurrence of assembling gaps is avoided to cause vibration or noise.
The shift controller 30 is not described herein too much for the prior art, for example, see the article: pure electric vehicles two grades of automatic gearbox drive ratio optimization and shift quality research, Jiangsu university, author: the inventor of the inventor in the field of electric vehicle driving and gear shifting control technology research based on a two-gear double-clutch automatic transmission: song Yong Dynasty, which is a prior art, is described in detail herein, and reference to shift controller 30 is not limited to the contents of the two articles.
Referring to the description of fig. 4, the second driving gear 22 and the first driving gear 21 are respectively assembled with the first shaft body 40 through the first bearing ring 25, an assembly ring groove 43 for assembling the first bearing ring 25 is formed in the first shaft body 40, the assembly ring groove 43 is designed to facilitate the assembly of the first bearing ring 25, meanwhile, the first bearing ring 25 is prevented from slipping in the using process, and necessary limiting parts such as collars can be arranged on two sides of the first bearing ring 25. The first bearing ring 25 and the first shaft body 40 can select a thermal expansion and cold contraction assembly scheme, the diameter of the inner ring of the first bearing ring 25 is smaller than the outer diameter of the first shaft body 40, the diameter of the inner ring of the first bearing ring 25 is enlarged in a mode of heating the inner ring of the first bearing ring 25, the inner ring is rapidly sleeved on the first shaft body 40 and is matched with the assembly ring groove 43, and other assembly modes and other scheme assembly schemes of the first shaft body 40 and the first bearing ring 25 can be selected.
The first bearing ring 25 is designed to realize that when the second driving gear 22 or the first driving gear 21 does not cooperate with the gear shift assembly 60, the driving gear and the corresponding driven gear are in an idle rotation state, so that the output efficiency of the driving gear cooperating with the gear shift assembly 60 and the output efficiency of the driven gear engaged with the driving gear are ensured, and the reduction of the gear transmission error is facilitated.
Referring to fig. 9-10 in the specification, the second connecting assembly 65 includes a second connecting base 651, a second sliding cavity 653 is formed in the second connecting base 651, through holes for sliding the second connecting moving block 652 are formed at two ends of the second connecting base 651, a second supporting fixed block 655 is fixedly disposed in the second sliding cavity 653, the second connecting moving block 652 is disposed at two ends of the second supporting fixed block 655, an elastic member 654 is filled between the second connecting moving block 652 and the second sliding cavity 653, and a second spring 656 is disposed between the second connecting moving block 652 and an inner wall of the second sliding cavity 653.
The second connecting moving block 652 provided at both ends of the second connecting assembly 65 is used for abutting against the first connecting block 70, so as to drive the first connecting block 70 to rotate and further synchronously drive the driving gear connected with the first connecting block 70 to rotate, during the abutting process of the second connecting moving block 652 and the first connecting block 70, the moment when the second connecting moving block 652 and the first connecting block 70 contact has a huge impact force, the impact force is absorbed by the designed elastic member 654, the impact force is not used for shifting gears, the tooth burning or tooth violent striking during the shifting process can be reduced, and after the impact is transmitted to the adjacent elastic member 654 during the contacting process of the second connecting moving block 652 and the first connecting block 70, the second connecting moving block 652 is further provided with the second spring 656 to make it form a proper slip, that is, the proper slip of the second connecting moving block 652 relative to the second slip cavity 653 can be realized, therefore, gear shifting impact can be reduced, and gear shifting smoothness is guaranteed.
Referring to fig. 6 to 8 of the specification, an auxiliary connecting member 80 is disposed between the two connecting reinforcing rods 63, the auxiliary connecting member 80 is disposed between the first shifting ring body 61 and the second shifting ring body 62, the connecting reinforcing rods 63 penetrate through the auxiliary connecting member 80, the auxiliary connecting member 80 is hollow, and an auxiliary flow through hole 81 communicating with the hollow chamber is formed in a side wall of the auxiliary connecting member 80. The auxiliary connecting piece 80 is preferably made of a heat insulation material, the auxiliary connecting piece 80 is designed to be used for improving the support of the first shifting ring body 61 and the second shifting ring body 62 on two sides, the temperature transmission is further reduced through the auxiliary connecting piece 80, the auxiliary connecting piece 80 is designed to be a hollow structure, the energy loss in the rotating process of the first shifting ring body 61 and the second shifting ring body 62 can be reduced, the auxiliary connecting piece 80 can relatively drive the flow of air flow nearby the auxiliary connecting piece in the rotating process of the connecting reinforcing rod 63, the flow of the air flow nearby the shifting assembly 60 can be favorably driven to contribute to heat dissipation, the temperature nearby the first shifting ring body 61 and the second shifting ring body 62 can be reduced, and the auxiliary connecting piece 80 is provided with the auxiliary flow through holes 81, so that the noise in the shifting process can be favorably absorbed through the hollow structure, and the noise is reduced.
The traction motor 10 connected with the first shaft 40 is arranged outside the first box 20, and is used for inputting power to the first shaft 40.
Referring to the description and the attached fig. 5, the second shift ring 62 and the first shift ring 61 are respectively provided with a second key slot 66 and a fitting through hole 67. For smooth sliding movement with the first shift base 64 on the mounting key 42.
The two-gear transmission for the new energy automobile is divided into three modes, the second connecting assembly 65 can slide left and right on the first shaft body 40 along with the first gear shifting base body 64, and the sliding of the first gear shifting base body 64 on the first shaft body 40 is divided into three modes; the method comprises the following specific steps:
in the first mode, high-speed gear is adopted, the first gear shifting base body 64 drives the second connecting assembly 65 to slide towards the first driving gear 21 and enable the side surface of the second connecting assembly 65 to be attached to or adjacent to the side surface of the first driving gear 21, the adjacent distance is smaller than 3mm, the second connecting moving block 652 of the second connecting assembly 65 can be abutted to the first connecting block 70 on the first driving gear 21 while the side surface of the second connecting assembly 65 is attached to or adjacent to the side surface of the first driving gear 21, so that the first shaft body 40 rotates and transmits the rotating force to the gear shifting assembly 60 through the assembling key block 42, the rotating force is transmitted to the first driving gear 21 by the gear shifting assembly 60, the rotating force is transmitted to the fourth driven gear 24 by the first driving gear 21, the rotating force is transmitted to the second shaft body 50 by the fourth driven gear 24, and the second driving gear 22 idles in the process.
The gear ratio of the first driving gear 21 and the fourth driven gear 24 in mode one is preferably designed to be 1: 1.
Mode two, the low-speed gear, first gear shifting base member 64 drives second coupling assembling 65 and slides to second driving gear 22 direction and makes second coupling assembling 65 side and the laminating of second driving gear 22 side or adjacent setting, adjacent interval is less than 3mm, second connection movable block 652 of second coupling assembling 65 can with the first connecting block 70 butt on the second driving gear 22 when laminating of second coupling assembling 65 side and second driving gear 22 side or adjacent setting, and then realize that first shaft body 40 is rotatory and pass through assembly key piece 42 with revolving force transmission for gear shifting assembly 60, gear shifting assembly 60 transmits revolving force for second driving gear 22, second driving gear 22 transmits revolving force for third driven gear 23, third driven gear 23 transmits revolving force for second shaft body 50 output, first driving gear 21 idles in this process.
The transmission ratio of the second driving gear 22 and the third driven gear 23 in mode two is designed to be 1:2 or 1:2.5, preferably 1:2.
In mode three, neutral, i.e., the shifting unit 60 is not in contact with the first driving wheel 21 or the second driving wheel 22 on both left and right sides.
It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims (7)

1. A two speed transmission for new energy automobile includes:
a first box body (20),
the gear shifting mechanism comprises a first shaft body (40), the first shaft body (40) sequentially penetrates through two opposite side surfaces of a first box body (20), a joint is provided with a bearing, a second driving gear (22) and a first driving gear (21) which are respectively positioned on two inner wall directions of the first box body (20) are arranged on the first shaft body (40), a gear shifting assembly (60) capable of sliding is arranged on the first shaft body (40) between the second driving gear (22) and the first driving gear (21),
a second shaft body (50), wherein the second shaft body (50) sequentially passes through two opposite side surfaces of the first box body (20), a joint is provided with a bearing, the second shaft body (50) is parallel to the axis of the first shaft body (40), the second shaft body (50) is provided with a third driven gear (23) meshed with the second driving gear (22) and a fourth driven gear (24) meshed with the first driving gear (21),
the gear shifting mechanism comprises a first driving gear (22), a second driving gear (21), a gear shifting assembly (60), a first connecting block (70), a second connecting assembly (65), a telescopic second connecting moving block (652), and a first connecting block (70) is arranged on the opposite surfaces of the second driving gear (22) and the first driving gear (21), the second connecting assembly (65) is arranged on the first connecting block (70), and the two ends of the second connecting assembly (65) are provided with the telescopic second connecting moving block (652).
2. The two-speed transmission for the new energy automobile according to claim 1, characterized in that: the gear shifting assembly (60) comprises a first gear shifting base body (64) capable of sliding on a first shaft body (40), the middle of the first gear shifting base body (64) is provided with an assembling through hole (67) with the same diameter as the first shaft body (40), the hole wall of the assembling through hole (67) is provided with a second key groove (66), the first shaft body (40) between a second driving gear (22) and a first driving gear (21) is provided with a key groove (41), and an assembling key block (42) capable of being matched with the key groove (41) and the second key groove (66) is arranged in the first shaft body,
the second that can slide relative first axis body (40) is established to first base member (64) both sides of shifting gears ring body (62), the second is shifted ring body (62) side and is connected with first ring body (61) of shifting through encircleing the connection stiffener (63) of laying, first ring body (61) side of shifting is equipped with second coupling assembling (65).
3. The two-speed transmission for the new energy automobile according to claim 2, characterized in that: the second driving gear (22) and the first driving gear (21) are assembled with the first shaft body (40) through the first bearing ring (25) respectively, and an assembling ring groove (43) used for assembling the first bearing ring (25) is formed in the first shaft body (40).
4. The two-speed transmission for the new energy automobile according to claim 3, characterized in that:
the second connecting assembly (65) comprises a second connecting base body (651), a second sliding cavity (653) is formed in the second connecting base body (651), through holes for sliding the second connecting moving block (652) are formed in the two end portions of the second connecting base body (651), a second supporting fixed block (655) is fixedly arranged in the second sliding cavity (653), the second connecting moving block (652) is arranged at the two end portions of the second supporting fixed block (655), an elastic part 654 is filled between the second connecting moving block (652) and the second supporting fixed block (655), and a second spring (656) is arranged between the second connecting moving block (652) and the inner wall of the second sliding cavity (653).
5. The two-speed transmission for the new energy automobile according to claim 3, characterized in that: two be equipped with auxiliary connecting piece (80) between connection stiffener (63), auxiliary connecting piece (80) are located first shift ring body (61) and the second shift and are shifted between ring body (62) just connect stiffener (63) and pass auxiliary connecting piece (80), the inside cavity of auxiliary connecting piece (80) sets up, just auxiliary connecting piece (80) lateral wall is seted up with supplementary circulation hole (81) of cavity intercommunication in inside.
6. The two-speed transmission for the new energy automobile according to claim 3, characterized in that: and a traction motor (10) connected with the first shaft body (40) is arranged outside the first box body (20).
7. The two-speed transmission for the new energy automobile according to claim 3, characterized in that: and a second key groove (66) and an assembling through hole (67) are respectively formed in the second gear shifting ring body (62) and the first gear shifting ring body (61).
CN202111315239.4A 2021-11-08 2021-11-08 Two-gear transmission for new energy automobile Active CN113738831B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2735822A1 (en) * 1995-06-21 1996-12-27 Europ Propulsion INSTANTANEOUS DRIVE GAMELESS COUPLING
CN102555796A (en) * 2011-11-28 2012-07-11 重庆大学 Two-speed automatic gear shifting rear axle driving system for pure electric vehicles
CN104089005A (en) * 2014-07-16 2014-10-08 重庆市佳南工贸有限公司 Device of electric vehicle gearbox clutchless synchronizer and capable of achieving sliding shifting and reversing
CN110274001A (en) * 2019-08-05 2019-09-24 安阳工学院 A kind of electric car single direction bearing type two speed transmission
CN213145242U (en) * 2020-08-20 2021-05-07 河南绿动能源科技有限公司 Integrated two-gear speed change drive axle mechanism for electrified automobile
CN113339419A (en) * 2021-06-07 2021-09-03 北京理工大学 Elastic jaw clutch

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2735822A1 (en) * 1995-06-21 1996-12-27 Europ Propulsion INSTANTANEOUS DRIVE GAMELESS COUPLING
CN102555796A (en) * 2011-11-28 2012-07-11 重庆大学 Two-speed automatic gear shifting rear axle driving system for pure electric vehicles
CN104089005A (en) * 2014-07-16 2014-10-08 重庆市佳南工贸有限公司 Device of electric vehicle gearbox clutchless synchronizer and capable of achieving sliding shifting and reversing
CN110274001A (en) * 2019-08-05 2019-09-24 安阳工学院 A kind of electric car single direction bearing type two speed transmission
CN213145242U (en) * 2020-08-20 2021-05-07 河南绿动能源科技有限公司 Integrated two-gear speed change drive axle mechanism for electrified automobile
CN113339419A (en) * 2021-06-07 2021-09-03 北京理工大学 Elastic jaw clutch

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