Power-uninterrupted and gear-type dual-clutch variable speed motor structure

Abstract

The utility model provides a power uninterrupted and gear type double-clutch variable speed motor structure, which comprises a left half shaft, a middle shaft and a right half shaft which are coaxially arranged from left to right in sequence, a first machine core is connected to the left half shaft, and a second machine core is connected to the middle shaft and the right half shaft. The shell is arranged outside the first movement, the second movement, the first clutch and the second clutch in a sealing mode, the left end of the shell is rotationally connected to the left half shaft, the right end of the shell is rotationally connected to the right half shaft, and transmission output of torque and rotating speed between the first movement and the shell is achieved through opening and closing control of the first clutch; transmission output of torque and rotating speed between the second movement and the shell is realized through opening and closing control of the second clutch; the speed ratio of the first movement is smaller than that of the second movement. According to the structure, two machine core structures are used, the two machine cores are matched with each other, the burnout risk of the motor is reduced, the whole vehicle is prevented from sliding on a slope, the output rotating speed and torque range is larger, and the configuration requirements of more vehicle types can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a power-uninterrupted and gear-type dual-clutch speed-changing motor structure. Background Art

[0002] An electric-assisted bicycle, also known as an electric-assisted bicycle, is a bicycle that combines human pedaling with electric auxiliary power. The hub motor is the core component of its electric auxiliary power. Currently, the following problems exist during the operation of the hub motor:

[0003] 1. Motor climbing performance is one of the important indicators for measuring hub motors. When the motor climbs a slope exceeding its limit or a long distance, the motor often generates heat quickly and causes the motor to burn out or the entire vehicle to slide, causing safety risks.

[0004] 2. When the hub motor is started, due to the built-in gear transmission structure of the motor, usually due to the large speed ratio, it starts slowly, is laborious when starting on a slope, or directly stalls and does not work.

[0005] 3. When consumers use hub motors on relatively open and flat roads, they often need to drive at a faster speed, which is limited by the performance of the motor itself and cannot be achieved, thus failing to meet consumer needs.

[0006] 4. The torque of conventional hub motors is limited by the design itself. When used in some complex road conditions and extreme scenarios, it cannot meet consumer needs, resulting in damage to the motor gears or burning of the movement. Utility Model Content

[0007] The technical problem to be solved by the utility model is: in order to overcome the deficiencies in the prior art, the utility model provides a power-uninterrupted and gear-type dual-clutch speed-changing motor structure.

[0008] The technical solution adopted by the present invention to solve its technical problems is: a power-uninterrupted and gear-type dual-clutch speed-changing motor structure, including a shell, a left half-shaft, a middle shaft, a right half-shaft, a first movement, a second movement, a first clutch and a second clutch, wherein the left half-shaft, the middle shaft and the right half-shaft are coaxially arranged from left to right, and the first movement is connected to the left half-shaft, and the second movement is connected to the middle shaft and the right half-shaft, the shell is sealed on the outside of the first movement, the second movement, the first clutch and the second clutch, and the left end of the shell is rotatably connected to the left half-shaft, and the right end of the shell is rotatably connected to the right half-shaft, the transmission output of torque and speed between the first movement and the shell is realized by opening and closing control of the first clutch; the transmission output of torque and speed between the second movement and the shell is realized by opening and closing control of the second clutch; the speed ratio of the first movement is smaller than the speed ratio of the second movement.

[0009] Further, the first machine core includes a first rotor, a first stator and a first planetary gear assembly, the first planetary gear assembly includes an inner ring gear, a first planetary gear and a first sun gear, the inner ring gear and the first sun gear are connected through the first planetary gear, the first stator is embedded in the first rotor, and the inner ring of the first rotor is connected to the left half shaft through a rotor bearing, the first sun gear is sleeved on the left half shaft, and the right end thereof is fixedly connected to the first rotor and rotates synchronously with the first rotor, the first planetary gears are connected to the first small shaft of the first clutch as a power input transmission end of the motor, the inner ring of the first clutch is fixedly connected to the left half shaft, the outer wall of the inner ring gear is fixedly connected to the inner wall of the shell, and a torque is output.

[0010] Further, the second machine core includes a second stator, a second rotor, a gear box end cover, a wire outlet end cover and a second planetary gear, the inner ring of the second rotor is connected to the right end of the middle shaft, the second stator is arranged on the periphery of the second rotor, the gear box end cover and the wire outlet end cover are arranged on the left and right sides of the second stator and the second rotor respectively, the second stator and the second rotor are embedded in the interior, the inner ring of the gear box end cover is connected to the middle shaft through a rotor large bearing, the inner ring of the wire outlet end cover is connected to the middle shaft through a rotor small bearing, a plurality of second small shafts are fixedly connected to the gear box end cover, the second planetary gears are connected to the second small shafts one by one, the second planetary gears are connected to the second small shafts through planetary gear bearings, the left end of the middle shaft is provided with a middle shaft gear, the second planetary gear is a double gear, including a right end large gear and a left end small gear, the right end large gear is meshed with the middle shaft gear, and the left end small gear is meshed with the inner ring of the second clutch for inputting power, the outer ring of the second clutch is connected to the inner wall of the shell to output a torque to the shell.

[0011] Further, the speed ratio of the first machine core is 1:5, and the speed ratio of the second machine core is 1:12.8.

[0012] Further, in order to facilitate the rotary connection between the motor shell and the shaft, a first bearing, a second bearing, a third bearing and a clamping base are further included, the left end of the shell is rotatably connected to the left half shaft through the first bearing, the second bearing and the third bearing are arranged at the two ends of the clamping base respectively, the right half shaft is sleeved into the clamping base and is fixedly connected to the second bearing and the third bearing at the two ends of the clamping base, the end cover at the right end of the shell is fixedly connected to the clamping base through screws, and the right end cover is fixedly connected to the shell through screws. The rotary connection on the right half shaft is realized through the second bearing, the third bearing and the clamping base.

[0013] The utility model discloses the beneficial effect is:

[0014] (1) Using two sets of motor core structure, according to the mutual cooperation of the two cores to share the power required by the motor, reduce the risk of motor burnout; when a single motor does not meet the current slope, the second core intervenes to cooperate with the first core to input power at the same time, avoiding the whole vehicle from sliding on the slope.

[0015] (2) When starting, use the smaller speed ratio core to drive output speed and torque, improve the response speed of vehicle speed-up.

[0016] (3) When a certain vehicle speed is met, the larger speed ratio core intervenes to output speed and torque, and the smaller speed ratio core slowly withdraws power output, and the vehicle speed is smoothly accelerated (different from the mechanical transmission, the gear shifting is smooth and no feeling).

[0017] (4) In extreme working conditions, both cores output power at the same time to meet the current scene requirements.

[0018] (5) The hub motor power and vehicle speed are variable, which can adapt to more vehicle configuration requirements. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model will be further described below in combination with the drawings and embodiments.

[0020] Figure 1 is the structure diagram of the double clutch variable speed motor structure of the utility model.

[0021] Figure 2 is the structure diagram of the first core.

[0022] Figure 3 is the structure diagram of the second core and shaft assembly.

[0023] Figure 4 is the structure diagram of the second core.

[0024] In the drawing: 1, first core, 1.1, first rotor, 1.2, first stator, 1.3, inner gear ring, 1.4, first planetary gear, 1.5, first sun gear, 1.6, first small shaft, 1.7, rotor bearing, 1.8, planetary gear bearing, 2, second core, 2.1, second stator, 2.2, second rotor, 2.3, gear box end cover, 2.4, second planetary gear, 2.5, second small shaft, 2.6, planetary gear bearing, 2.7, rotor small bearing, 2.8, rotor large bearing, 2.9, screw, 2.10, wire outlet end cover, 3, first clutch, 4, second clutch, 5, clamping base, 6, left half shaft, 6.1, key pin slot, 7, middle shaft, 7.1, middle shaft tooth, 8, right half shaft, 9, shell, 10, first bearing, 11, second bearing, 12, third bearing. DETAILED DESCRIPTION

[0025] The utility model will be further described in detail in connection with the drawings. These drawings are all simplified schematic diagrams, and only schematically show the basic structure of the utility model, so they only show the structure related to the utility model, and the direction and reference (such as up, down, left, right, etc.) can only be used to help describe the features in the drawings. Therefore, the following specific embodiments are not used in a restrictive sense, and the scope of the claimed subject matter is only defined by the appended claims and their equivalents.

[0026] As Figures 1-4 The utility model discloses a power uninterrupted and has the double clutch variable speed motor structure of formula, including casing 9, left half axle 6, middle axle 7, right half axle 8, first machine core 1, second machine core 2, first clutch 3 and second clutch 4, wherein, left half axle 6, middle axle 7, right half axle 8 are coaxial from left to right in proper order, and first machine core 1 is connected on left half axle 6, and second machine core 2 is connected on middle axle 7 and right half axle 8, the casing 9 is enclosed in the outside of first machine core 1, second machine core 2, first clutch 3 and second clutch 4, and the left end of casing 9 is rotatably connected on left half axle 6, and the right end of casing 9 is rotatably connected on right half axle 8, in this embodiment, in order to facilitate the rotatable connection between motor casing 9 and axle, still including first bearing 10, second bearing 11, third bearing 12 and card base 5, the left end of casing 9 is rotatably connected on left half axle 6 through first bearing 10, second bearing 11, third bearing 12 are arranged at the both ends of card base 5 respectively, and right half axle 8 is sleeved into card base 5, and is fixedly matched with second bearing 11, third bearing 12 at the both ends of card base 5, and the end cover of casing 9 right end is fixedly connected on card base 5 through screw, and the right end cover is fixedly connected between casing 9 through screw. The rotatable connection on right half axle 8 is realized through second bearing 11, third bearing 12 and card base 5.

[0027] The transmission output of torque and rotating speed between first machine core 1 and casing 9 is realized through the open-close control of first clutch 3, and the transmission output of torque and rotating speed between second machine core 2 and casing 9 is realized through the open-close control of second clutch 4, and the speed ratio of first machine core 1 is less than the speed ratio of second machine core 2, preferably, the speed ratio of first machine core is 1:5, and the speed ratio of second machine core is 1:12.8.

[0028] As Figure 2As shown, the first movement 1 comprises a first rotor 1.1, a first stator 1.2 and a first planetary transmission assembly, the first planetary transmission assembly comprising an inner ring gear 1.3, a first planetary gear 1.4 and a first sun gear 1.5, the inner ring gear 1.3 and the first sun gear 1.5 being drivingly connected through the first planetary gear 1.4, the first stator 1.2 being embedded in the first rotor 1.1, and the inner ring of the first rotor 1.1 being connected to the left half shaft 6 through a rotor bearing 1.7, and a magnetic steel being arranged between the outer wall of the first stator 1.2 and the inner wall of the first rotor 1.1, the first sun gear 1.5 being sleeved on the left half shaft 6, and the right end thereof being fixedly connected to the first rotor 1.1 through a screw, and rotating synchronously with the first rotor 1.1, the first planetary gear 1.4 being connected to the first small shaft 1.6 of the first clutch 3 as the input power of the motor, and the first planetary gear 1.4 and the first small shaft 1.6 being drivingly connected through a planetary gear bearing 1.8, and in the embodiment, there are three planetary gears, the inner ring of the first clutch 3 being fixedly connected to the left half shaft 6 through a key pin, and the left half shaft 6 being provided with a key pin groove 6.1 for connecting the inner ring of the first clutch 3, and the outer wall of the inner ring gear 1.3 being fixedly connected to the inner wall of the housing 9 to output torque.

[0029] The working principle of the first movement 1 is as follows: after the first stator 1.2 is energized, the magnetic field generated interacts with the magnetic field of the magnetic steel to drive the outer first rotor 1.1 to rotate periodically, the first rotor 1.1 and the first sun gear 1.5 being reliably fixed through a screw, the first rotor 1.1 rotating to drive the first sun gear 1.5 to rotate simultaneously, the first sun gear 1.5 being the mechanical transmission input power source of the motor, the first clutch 3 and the left half shaft 6 being fixed in the circumferential direction through the key pin on the shaft, and when the first rotor 1.1 works, the first clutch 3 is in a non-sliding state, so that the power of the first sun gear 1.5 is finally transmitted to the mechanical transmission output component, i.e., the inner ring gear 1.3, and the inner ring gear 1.3 and the housing 9 of the motor are designed to have a reliable interference fit, so as to finally realize the rotation of the motor housing 9, thereby outputting torque.

[0030] As Figure 3 and Figure 4As shown, the second core 2 comprises a second stator 2.1, a second rotor 2.2, a gear box end cover 2.3, a wire outlet end cover 2.10 and a second planetary gear 2.4, wherein the inner circle of the second rotor 2.2 is connected to the right end of the middle shaft 7, the second stator 2.1 is arranged on the periphery of the second rotor 2.2, the gear box end cover 2.3 and the wire outlet end cover 2.10 are arranged on the left and right sides of the second stator 2.1 and the second rotor 2.2 respectively, the second stator 2.1 and the second rotor 2.2 are arranged inside and are locked and fixed by the hexagonal cylindrical head screw 2.9 between the outer circles of the gear box end cover 2.3 and the wire outlet end cover 2.10, six screws are used for connection in the embodiment; the inner circle of the gear box end cover 2.3 is connected to the middle shaft 7 through the rotor large bearing 2.8, the inner circle of the wire outlet end cover 2.10 is connected to the middle shaft 7 through the rotor small bearing 2.7, a plurality of second small shafts 2.5 are fixedly connected to the gear box end cover 2.3, the second planetary gear 2.4 is connected to the second small shaft 2.5 one by one, the second planetary gear 2.4 is connected to the second small shaft 2.5 through the planetary gear bearing 2.6, the left end of the middle shaft 7 is provided with a middle shaft tooth 7.1, the second planetary gear 2.4 is a double gear, comprising a right end large gear and a left end small gear, the right end large gear is engaged with the middle shaft tooth 7.1, the left end small gear is engaged with the inner ring gear of the second clutch 4, and is used for inputting power, the outer ring of the second clutch 4 is connected to the inner wall of the shell 9, and the torque is output to the shell 9, the outer ring of the second clutch 4 is in interference fit with the inner wall of the shell 9 in the embodiment, so that the torque is directly output. The right end of the left half shaft 6 is fixedly connected to the gear box end cover 2.3 through a screw.

[0031] The working principle of the second core 2 is as follows: the second stator 2.1 generates a magnetic field after being electrified, under the mutual action of the magnetic field, the inner side second rotor 2.2 is driven to rotate periodically and stably, the second rotor 2.2 is fixedly connected to the middle shaft 7, the middle shaft 7 is driven to rotate, the middle shaft tooth 7.1 is engaged with the second planetary gear 2.4, the second planetary gear 2.4 is driven to rotate on the second small shaft 2.5, and the torque is transmitted to the second clutch 4, when the motor does not work, the second clutch 4 slides, the core does not move, when the motor works, the second clutch 4 is tightly wedged, and the power is transmitted to the shell 9 of the motor.

[0032] In the embodiment, the first clutch 3 is a simple inner ring gear 1.3, and the second clutch 4 is a ring gear clutch, the structures of the two are different, and thus the working principles are also different.

[0033] Based on the above ideal embodiment of the utility model, through the above description, relevant personnel can make various changes and modifications without deviating from the scope of the utility model. The technical scope of the utility model is not limited to the content in the specification, and must be determined according to the scope of claims.

Claims

1. A power-uninterrupted and geared dual-clutch speed-changing motor structure, characterized by: The application relates to a shell, a left half shaft, a middle shaft, a right half shaft, a first machine core, a second machine core, a first clutch and a second clutch, wherein the left half shaft, the middle shaft and the right half shaft are coaxially arranged from left to right, the first machine core is connected to the left half shaft, the second machine core is connected to the middle shaft and the right half shaft, the shell is arranged outside the first machine core, the second machine core, the first clutch and the second clutch, the left end of the shell is rotatably connected to the left half shaft, the right end of the shell is rotatably connected to the right half shaft, the transmission output of the torque and the rotating speed between the first machine core and the shell is realized through the open-close control of the first clutch, the transmission output of the torque and the rotating speed between the second machine core and the shell is realized through the open-close control of the second clutch, and the speed ratio of the first machine core is smaller than that of the second machine core.

2. The power uninterrupted and gear type double clutch transmission motor structure according to claim 1, wherein: The first machine core comprises a first rotor, a first stator and a first planetary transmission assembly, the first planetary transmission assembly comprises an inner ring gear, a first planetary wheel and a first sun gear, the inner ring gear and the first sun gear are transmissionally connected through the first planetary wheel, the first stator is embedded in the first rotor, the inner ring of the first rotor is connected to the left half shaft through a rotor bearing, the first sun gear is sleeved on the left half shaft, and the right end of the first sun gear is fixedly connected to the first rotor and rotates synchronously with the first rotor, the first planetary wheel is connected to a first small shaft of the first clutch and serves as a power input transmission end of the motor, the inner ring of the first clutch is fixedly connected to the left half shaft, the outer wall of the inner ring gear is fixedly connected to the inner wall of the shell, and the torque is output.

3. The power uninterrupted and gear type double clutch transmission motor structure according to claim 1, wherein: The second machine core comprises a second stator, a second rotor, a gear box end cover, a wire outlet end cover and a second planetary wheel, the inner ring of the second rotor is connected to the right end of the middle shaft, the second stator is arranged on the periphery of the second rotor, the gear box end cover and the wire outlet end cover are arranged on the left and right sides of the second stator and the second rotor respectively, the second stator and the second rotor are arranged in the interior, the inner ring of the gear box end cover is connected to the middle shaft through a rotor large bearing, the inner ring of the wire outlet end cover is connected to the middle shaft through a rotor small bearing, a plurality of second small shafts are fixedly connected to the gear box end cover, the second planetary wheel is connected to the second small shafts one by one, the second planetary wheel is connected to the second small shafts through a planetary wheel bearing, the left end of the middle shaft is provided with a middle shaft tooth, the second planetary wheel is a double gear, comprising a right end large gear and a left end small gear, the right end large gear is meshed with the middle shaft tooth, the left end small gear is meshed with an inner ring gear of the second clutch, and the second clutch is used for inputting power, the outer ring of the second clutch is connected to the inner wall of the shell, and the torque is output to the shell.

4. The power uninterrupted and gear type double clutch transmission motor structure according to claim 1, wherein: The speed ratio of the first machine core is 1:5, and the speed ratio of the second machine core is 1:12.

8.

5. The power uninterrupted and gear type double clutch transmission motor structure according to claim 1, wherein: The shell left end is rotatably connected to the left half shaft through a first bearing, the second bearing and the third bearing are arranged at the two ends of a clamping base respectively, the right half shaft is sleeved into the clamping base and is fixedly matched with the second bearing and the third bearing at the two ends of the clamping base, the end cover of the shell right end is fixedly connected to the clamping base through screws, and the right end cover is fixedly connected to the shell through screws.

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