CN215475592U - Compact type double-supporting-wheel-core electric driving system - Google Patents

Compact type double-supporting-wheel-core electric driving system Download PDF

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Publication number
CN215475592U
CN215475592U CN202122283347.XU CN202122283347U CN215475592U CN 215475592 U CN215475592 U CN 215475592U CN 202122283347 U CN202122283347 U CN 202122283347U CN 215475592 U CN215475592 U CN 215475592U
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China
Prior art keywords
speed reducing
motor
reducing mechanism
shaft
box body
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CN202122283347.XU
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Chinese (zh)
Inventor
薛荣生
郭廷明
邓天仪
卓达军
高超
谭志康
邓云帆
梁品权
阎昌全
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Chongqing Yuanyikuo Technology Co ltd
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Chongqing Yuanyikuo Technology Co ltd
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Abstract

The utility model discloses a compact type double-support wheel core electric drive system which comprises a wheel hub, a box body assembly, a motor and a speed reducing mechanism, wherein the box body assembly is positioned in a box body mounting groove on one side of the wheel hub, the speed reducing mechanism and the wheel hub are supported on a first support shaft, the box body assembly is provided with a second support shaft, one ends, far away from each other, of the first support shaft and the second support shaft can be respectively mounted on two flat fork arms of a flat fork, and one side end face of a gear set of the speed reducing mechanism is recessed to form abdicating mounting grooves. By adopting the technical scheme, the wheel core electric driving system forms a bilateral supporting structure, so that the structural stability of bottom fork installation is ensured; in addition, the abdicating mounting groove capable of accommodating the bearing and/or the oil seal is arranged on the end face of one side of the gear set of the speed reducing mechanism, so that the structure of the speed reducing mechanism is more compact, the width of the box body assembly can be effectively reduced, and the speed reducing mechanism can be adapted to a flat fork with the distance between flat fork arms smaller than 200mm, so that the electric two-wheel vehicle can meet the development trend of miniaturization and light weight.

Description

Compact type double-supporting-wheel-core electric driving system
Technical Field
The utility model relates to the technical field of electric two-wheeled vehicles, in particular to a compact type double-supporting-wheel-core electric driving system.
Background
With the development of science and technology, the market share of the electric two-wheeled vehicle is higher and higher. The driving mode of the electric two-wheeled vehicle mainly comprises a hub motor mode and a wheel-side motor mode, the main difference between the hub motor mode and the wheel-side motor mode is the difference of the installation positions of the motors, and the principle is not substantially different. The driving system of the hub motor forms a part of the hub, generally adopts outer rotor driving, the hub is connected with the outer rotor driving, the stator shaft is supported on a bottom fork, the hub is commonly adopted on two-wheeled electric vehicles, but no speed change device is arranged, therefore, the matching of output torque and driving resistance cannot be met, the energy consumption is high, the efficiency is low, and the hub motor is directly driven by the motor, the motor can only adopt a low-rotating-speed motor, and the hub has limited volume, limited motor power, large mass and large volume.
Therefore, a wheel core electric drive system is produced in the market, a motor and a speed reducing mechanism are integrally arranged in a wheel hub, and the speed reducing mechanism is additionally arranged, so that the torque output of the electric vehicle can be greatly improved, the high rotating speed and the large torque are suitable for, the manufacturing cost is reduced, the running stability is ensured, and the energy consumption is reduced. However, due to the limitation of structural design, the conventional wheel core electric drive system has a large size, and a large bottom fork with a bottom fork arm spacing larger than 200mm must be adopted for installation, so that the electric two-wheeled vehicle does not meet the development trend of miniaturization and light weight.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides a compact double-support wheel core electric driving system.
The technical scheme is as follows:
the utility model provides a two supporting wheel core electric drive systems of compact, includes wheel hub, box assembly, motor and reduction gears, the box assembly is located the box mounting groove of wheel hub one side, motor and reduction gears install in the box assembly its main points lie in: the reduction gears supports on first supporting shaft, wheel hub rotationally supports the one end of wearing out the box assembly at first supporting shaft, the box assembly is kept away from one side of first supporting shaft and is installed the second back shaft with the coaxial setting of first supporting shaft, the one end that first supporting shaft and second back shaft kept away from each other can be installed respectively on two flat yoke of chain stay, all sunken being formed with on one side terminal surface of reduction gears's gear train at least can holding bearing and oil blanket one of them mounting groove of stepping down.
Preferably, the method comprises the following steps: the reduction gears still includes the gear shaft parallel with the motor shaft of motor and rotationally the suit at the epaxial power take off cover of first support, reduction gears's gear train includes that the suit is at the epaxial one-level driving gear of motor, the suit is at the epaxial one-level driven gear of intermediate gear and the suit is at the epaxial second grade driven gear of power take off with synchronous rotation ground, one-level driving gear and the meshing of one-level driven gear, the shaping has the second grade initiative tooth with the meshing of second grade driven gear on the intermediate gear axle, wheel hub installs the part that the box assembly was worn out at the power take off cover with synchronous rotation ground.
By adopting the structure, the structure is compact, the reduction ratio is large, and the speed reduction and torque increase transmission can be efficiently carried out.
Preferably, the method comprises the following steps: the box assembly includes the reduction gears installation cavity and is located the reduction gears installation cavity and keeps away from the motor installation cavity of wheel hub one side, second back shaft fixed mounting is in the one side that the reduction gears installation cavity was kept away from to the motor installation cavity, reduction gears installs in the reduction gears installation cavity, the motor is installed in the motor installation cavity, and the motor shaft inserts the reduction gears installation cavity from the connecting hole, one side terminal surface shaping that first supporting shaft was kept away from to the one-level driving gear has the mounting groove of stepping down is provided with the shutoff in the mounting groove of stepping down of this one-level driving gear between motor shaft and connecting hole the oil blanket.
By adopting the structure, the oil seal part is positioned in the yielding mounting groove of the first-level driving gear, and the width of the mounting cavity of the speed reducing mechanism can be effectively reduced, so that the compact double-supporting-wheel-core electric drive system is more compact in overall structure and can adapt to a flat fork with smaller arm distance.
Preferably, the method comprises the following steps: one side end face molding that one-level driven gear kept away from the second grade initiative tooth has the mounting groove of stepping down, the both ends of intermediate gear axle are passed through respectively the bearing is installed on the box assembly, and one of them bearing is arranged in one-level driven gear's the mounting groove of stepping down.
By adopting the structure, one of the bearings is positioned in the yielding mounting groove of the first-stage driven gear, the width of the box body assembly can be effectively reduced, so that the compact double-supporting-wheel-core electric driving system is more compact in overall structure and can be adapted to a bottom fork with a smaller distance between the bottom fork arms.
Preferably, the method comprises the following steps: one side end face molding that second grade driven gear is close to the motor has the mounting groove of stepping down, this second grade driven gear's both sides are passed through respectively the bearing is installed on the box assembly, and one of them bearing is arranged in second grade driven gear's the mounting groove of stepping down.
By adopting the structure, one of the bearings is positioned in the abdicating mounting groove of the secondary driven gear, the width of the box body assembly can be effectively reduced, so that the compact double-supporting-wheel-core electric driving system is more compact in overall structure and can be adapted to a bottom fork with smaller arm distance.
Preferably, the method comprises the following steps: the power output cover is including the flange dish portion that is located the box assembly outside and the first supporting sleeve portion and the second supporting sleeve portion that are located flange dish portion both sides respectively, first supporting sleeve portion extends to inside the box assembly to rotationally the suit is epaxial at first support, second grade driven gear suit is on first supporting sleeve portion with rotating synchronously, second supporting sleeve portion extends to outside the box assembly to support on first supporting shaft through two bearings that set up side by side, wheel hub's installation cover supports on second supporting sleeve portion to lock on the flange dish portion through the bolt.
By adopting the structure, the power can be stably and reliably output, and the reliable installation of the hub can be ensured.
Preferably, the method comprises the following steps: the end face bearing is arranged between the end face of one end, far away from the flange disc part, of the first supporting sleeve part and the flange disc.
By adopting the structure, the reliable installation of the power output sleeve and the coaxiality of the power output sleeve and the first supporting shaft are ensured.
Preferably, the method comprises the following steps: and the oil seals are arranged between the first supporting sleeve part and the box body assembly, between the flange disc part and the first supporting shaft and between the second supporting sleeve part and the first supporting shaft.
With the structure, the problem of engine oil leakage can be prevented.
Preferably, the method comprises the following steps: and a brake disc is arranged at one end of the mounting sleeve, which is far away from the flange disc part.
By adopting the structure, the brake disc can be stably and reliably integrated, and meanwhile, the brake disc is convenient to be matched with the brake caliper.
Compared with the prior art, the utility model has the beneficial effects that:
by adopting the compact type double-support wheel core electric driving system of the technical scheme, the design of the first support shaft and the second support shaft is utilized, so that the wheel core electric driving system forms a double-side support structure, the structural stability of flat fork installation is ensured, the driving safety of the electric two-wheel vehicle is improved, and the load capacity is improved; in addition, the abdicating mounting groove capable of containing the bearing and/or the oil seal is arranged on the end face of one side of the gear set of the speed reducing mechanism, so that the structure of the speed reducing mechanism is more compact, the width of the box body assembly can be effectively reduced, the whole structure of the compact type double-supporting wheel core electric driving system is more compact, the compact type double-supporting wheel core electric driving system can be adapted to a flat fork with the arm interval smaller than 200mm, and the electric two-wheel vehicle can meet the development trend of miniaturization and light weight.
Drawings
FIG. 1 is a schematic view of a compact dual support wheel core electric drive system and a bottom fork mounting structure;
FIG. 2 is a schematic structural diagram of a compact dual support wheel electric drive system;
FIG. 3 is a schematic view of the engagement between the motor and the reduction mechanism;
FIG. 4 is a schematic view of the engagement between the case assembly and the hub.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
As shown in fig. 1-4, a compact dual-support wheel core electric drive system mainly includes a wheel hub 1, a box assembly 2, a motor 3, a speed reduction mechanism, a first support shaft 4 and a second support shaft 5.
Referring to fig. 1, 2 and 4, the wheel hub 1 is used for mounting a tire 18, a case body mounting groove 1a is concavely formed on one side of the wheel hub 1, and the case body assembly 2 is located in the case body mounting groove 1 a. And, motor 3 and reduction gears are all installed in box assembly 2, reduction gears supports on first supporting shaft 4, wheel hub 1 rotationally supports the one end that first supporting shaft 4 wore out box assembly 2, box assembly 2 is kept away from one side of first supporting shaft 4 and is installed the second back shaft 5 with first supporting shaft 4 coaxial setting, the one end that first supporting shaft 4 and second back shaft 5 kept away from each other can be installed respectively on two flat yoke arms of flat fork 6, thereby motor 3 can pass through reduction gears with power transmission for wheel hub 1, drive wheel hub 1 and rotate, at this moment, first supporting shaft 4 and second back shaft 5 can not follow-up, wherein, second back shaft 5 passes through axle installing support 19 and installs on box assembly 2.
Specifically, referring to fig. 2 and 3, the speed reducing mechanism further includes a gear shaft 10 parallel to the motor shaft 3a of the motor 3 and a power output sleeve 13 rotatably sleeved on the first support shaft 4, the gear set of the speed reducing mechanism includes a first-stage driving gear 9 synchronously rotatably sleeved on the motor shaft 3a of the motor 3, a first-stage driven gear 11 synchronously rotatably sleeved on the intermediate gear shaft 10, and a second-stage driven gear 12 synchronously rotatably sleeved on the power output sleeve 13, the first-stage driving gear 9 is engaged with the first-stage driven gear 11, a second-stage driving gear 10a engaged with the second-stage driven gear 12 is formed on the intermediate gear shaft 10, and the hub 1 is synchronously rotatably mounted on a portion of the power output sleeve 13 penetrating out of the case assembly 2.
Therefore, the motor shaft 3a of the motor 3 drives the first-stage driving gear 9 to synchronously rotate, the first-stage driving gear 9 drives the first-stage driven gear 11 to rotate, the first-stage driven gear 11 drives the intermediate gear shaft 10 to synchronously rotate, the second-stage driving gear 10a of the intermediate gear shaft 10 drives the second-stage driven gear 12 to rotate, the second-stage driven gear 12 drives the power output sleeve 13 to synchronously rotate, and the power output sleeve 13 drives the hub 1 to synchronously rotate.
Referring to fig. 2 and 3, a yielding mounting groove a capable of accommodating at least one of the bearing 7 and the oil seal 8 is formed in a recessed manner on one side end face of the gear set of the speed reducing mechanism, and the yielding mounting groove a capable of accommodating the bearing 7 and/or the oil seal 8 is formed in one side end face of the gear set of the speed reducing mechanism, so that the structure of the speed reducing mechanism is more compact, the width of the box assembly 2 can be effectively reduced, the overall structure of the compact type double-support wheel core electric drive system is more compact, the compact type double-support wheel core electric drive system can be adapted to a flat fork 6 with a flat fork arm spacing smaller than 200mm, and the electric two-wheel vehicle meets the development trend of miniaturization and light weight.
Specifically, the box assembly 2 comprises a speed reducing mechanism installation cavity 2b and a motor installation cavity 2a positioned on one side of the speed reducing mechanism installation cavity 2b far away from the wheel hub 1, a second supporting shaft 5 is fixedly installed on one side of the motor installation cavity 2a far away from the speed reducing mechanism installation cavity 2b, a speed reducing mechanism is installed in the speed reducing mechanism installation cavity 2b, a motor 3 is installed in the motor installation cavity 2a, a motor shaft 3a is inserted into the speed reducing mechanism installation cavity 2b from a connecting hole 2c, an abdicating installation groove A is formed on one side end surface of a first-stage driving gear 9 far away from a first supporting shaft 4, an oil seal 8 blocked between the motor shaft 3a and the connecting hole 2c is arranged in the abdicating installation groove A of the first-stage driving gear 9, the width of the speed reducing mechanism installation cavity can be effectively reduced, and the whole structure of the compact type double-supporting wheel core electric drive system is more compact, it is possible to adapt a fork 6 with a smaller fork arm pitch.
Similarly, one side end face shaping that secondary driving tooth 10a was kept away from to one-level driven gear 11 has the mounting groove A of stepping down, and the both ends of intermediate gear axle 10 are installed on box assembly 2 through bearing 7 respectively, and one of them bearing 7 is arranged in one-level driven gear 11's mounting groove A of stepping down, can effectively reduce box assembly 2's width to make compact double bracing wheel core electric drive system's overall structure compacter, can the adaptation chain stay 6 that the chain stay arm interval is littleer.
Similarly, one side end face shaping that second grade driven gear 12 is close to motor 3 has the mounting groove A of stepping down, and the both sides of this second grade driven gear 12 are installed on box assembly 2 through bearing 7 respectively, and one of them bearing 7 is arranged in the mounting groove A of stepping down of second grade driven gear 12, can effectively reduce box assembly 2's width to make compact double bracing wheel core electric drive system's overall structure compacter, can the adaptation chain stay 6 that the chain stay arm interval is littleer.
Referring to fig. 2 and 3, the power output sleeve 13 includes a flange portion 13a located outside the case assembly 2, and a first supporting sleeve portion 13b and a second supporting sleeve portion 13c located on two sides of the flange portion 13a, respectively, the first supporting sleeve portion 13b extends to the inside of the case assembly 2 and is rotatably sleeved on the first supporting shaft 4, the second-stage driven gear 12 is synchronously rotatably sleeved on the first supporting sleeve portion 13b, the second supporting sleeve portion 13c extends to the outside of the case assembly 2 and is supported on the first supporting shaft 4 through two bearings 7 arranged side by side, and the mounting sleeve 1b of the hub 1 is supported on the second supporting sleeve portion 13c and is locked on the flange portion 13a through a bolt 14.
Referring to fig. 3, one end of the first support shaft 4 located inside the casing assembly 2 is connected to the casing assembly 2 through a flange 15, that is, the flange 15 is coaxially fixed to an end of the first support shaft 4, the flange 15 is connected to the casing assembly 2 through a bolt, and an end bearing 16 is disposed between an end face of the first support sleeve portion 13b far away from the flange portion 13a and the flange 15, so as to ensure reliable installation of the power output sleeve 13 and coaxiality with the first support shaft 4.
Referring to fig. 2, in order to prevent the oil leakage problem, an oil seal 8 is provided between the first supporting sleeve portion 13b and the casing assembly 2, and the oil seal 8 is located at one end of the first supporting sleeve portion 13b close to the flange portion 13 a. An oil seal 8 is arranged between the flange disc part 13a and the first support shaft 4, and meanwhile, an oil seal 8 is arranged between the second support sleeve part 13c and the first support shaft 4, and the oil seal 8 is positioned at one end, far away from the flange disc part 13a, of the second support sleeve part 13 c.
Referring to fig. 2-4, a brake disc 17 is disposed at an end of the mounting sleeve 1b away from the flange portion 13a, and specifically, the brake disc 17 is locked on an end surface of the mounting sleeve 1b by bolts, so that the mounting sleeve is stable and reliable.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims (9)

1. A compact type double-supporting wheel core electric drive system comprises a wheel hub (1), a box body assembly (2), a motor (3) and a speed reducing mechanism, wherein the box body assembly (2) is positioned in a box body installation groove (1a) on one side of the wheel hub (1), the motor (3) and the speed reducing mechanism are installed in the box body assembly (2), and the compact type double-supporting wheel core electric drive system is characterized in that: the reduction gears supports on first supporting shaft (4), wheel hub (1) rotationally supports the one end of wearing out box assembly (2) in first supporting shaft (4), box assembly (2) are kept away from one side of first supporting shaft (4) and are installed second back shaft (5) with first supporting shaft (4) coaxial setting, first supporting shaft (4) can be installed respectively on two parallel fork arms of parallel fork (6) with the one end that second back shaft (5) kept away from each other, all sunken being formed with on one side end face of reduction gears's gear train at least can holding bearing (7) and oil blanket (8) one of them mounting groove (A) of stepping down.
2. The compact dual support wheel electric drive system of claim 1, wherein: the speed reducing mechanism also comprises a gear shaft (10) parallel to a motor shaft (3a) of the motor (3) and a power output sleeve (13) which is rotatably sleeved on the first supporting shaft (4), the gear set of the speed reducing mechanism comprises a primary driving gear (9) which is sleeved on a motor shaft (3a) of the motor (3) in a synchronous rotating manner, a primary driven gear (11) which is sleeved on an intermediate gear shaft (10) in a synchronous rotating manner and a secondary driven gear (12) which is sleeved on a power output sleeve (13) in a synchronous rotating manner, the primary driving gear (9) is meshed with the primary driven gear (11), a secondary driving gear (10a) meshed with the secondary driven gear (12) is formed on the intermediate gear shaft (10), the hub (1) is arranged on the part of the power output sleeve (13) penetrating out of the box body assembly (2) in a synchronous rotating manner.
3. The compact dual support wheel electric drive system of claim 2, wherein: the box body assembly (2) comprises a speed reducing mechanism mounting cavity (2b) and a motor mounting cavity (2a) which is positioned on one side of the speed reducing mechanism mounting cavity (2b) far away from the wheel hub (1), the second supporting shaft (5) is fixedly arranged on one side of the motor mounting cavity (2a) far away from the speed reducing mechanism mounting cavity (2b), the speed reducing mechanism is arranged in the speed reducing mechanism mounting cavity (2b), the motor (3) is arranged in the motor mounting cavity (2a), and the motor shaft (3a) is inserted into the reduction mechanism mounting chamber (2b) from the connecting hole (2c), the abdicating installation groove (A) is formed on one side end surface of the first-level driving gear (9) far away from the first supporting shaft (4), the abdicating installation groove (A) of the primary driving gear (9) is internally provided with the oil seal (8) which is plugged between the motor shaft (3a) and the connection hole (2 c).
4. The compact dual support wheel electric drive system of claim 2, wherein: one side end face molding that secondary driving tooth (10a) was kept away from in one-level driven gear (11) has abdication mounting groove (A), the both ends of intermediate gear axle (10) are passed through respectively bearing (7) are installed on box assembly (2), and one of them bearing (7) are arranged in abdication mounting groove (A) of one-level driven gear (11).
5. The compact dual support wheel electric drive system of claim 2, wherein: a side end face of the second-stage driven gear (12) close to the motor (3) is formed into the yielding mounting groove (A), two sides of the second-stage driven gear (12) are respectively installed on the box body assembly (2) through the bearings (7), and one of the bearings (7) is located in the yielding mounting groove (A) of the second-stage driven gear (12).
6. The compact dual support wheel electric drive system of claim 2, wherein: power take off cover (13) including being located the outside flange dish portion (13a) of box assembly (2) and being located first support cover portion (13b) and second support cover portion (13c) of flange dish portion (13a) both sides respectively, first support cover portion (13b) extend to inside box assembly (2) to rotationally the suit is on first supporting shaft (4), second grade driven gear (12) suit is on first support cover portion (13b) with synchronous rotation, second support cover portion (13c) extend to outside box assembly (2) to support on first supporting shaft (4) through two bearing (7) that set up side by side, the installation cover (1b) of wheel hub (1) supports on second support cover portion (13c) to lock on flange dish portion (13a) through bolt (14).
7. The compact dual support wheel electric drive system of claim 6, wherein: one end, located inside the box body assembly (2), of the first supporting shaft (4) is connected with the box body assembly (2) through a flange plate (15), and an end face bearing (16) is arranged between one end face, far away from the flange plate portion (13a), of the first supporting sleeve portion (13b) and the flange plate (15).
8. The compact dual support wheel electric drive system of claim 6, wherein: and the oil seal (8) is arranged between the first supporting sleeve part (13b) and the box body assembly (2), between the flange disc part (13a) and the first supporting shaft (4) and between the second supporting sleeve part (13c) and the first supporting shaft (4).
9. The compact dual support wheel electric drive system of claim 6, wherein: and a brake disc (17) is arranged at one end of the mounting sleeve (1b) far away from the flange part (13 a).
CN202122283347.XU 2021-09-18 2021-09-18 Compact type double-supporting-wheel-core electric driving system Active CN215475592U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122283347.XU CN215475592U (en) 2021-09-18 2021-09-18 Compact type double-supporting-wheel-core electric driving system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122283347.XU CN215475592U (en) 2021-09-18 2021-09-18 Compact type double-supporting-wheel-core electric driving system

Publications (1)

Publication Number Publication Date
CN215475592U true CN215475592U (en) 2022-01-11

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ID=79769695

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122283347.XU Active CN215475592U (en) 2021-09-18 2021-09-18 Compact type double-supporting-wheel-core electric driving system

Country Status (1)

Country Link
CN (1) CN215475592U (en)

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