CN208715405U - A kind of large torque compact side hanging built-in motor - Google Patents
A kind of large torque compact side hanging built-in motor Download PDFInfo
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- CN208715405U CN208715405U CN201821351274.5U CN201821351274U CN208715405U CN 208715405 U CN208715405 U CN 208715405U CN 201821351274 U CN201821351274 U CN 201821351274U CN 208715405 U CN208715405 U CN 208715405U
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Abstract
The utility model discloses a kind of large torque compact side hanging built-in motors, including shell, motor body, clutch, gear drive, axis and chain wheel, shell includes the connected main casing and axis casing in one end, motor body and axis are loaded on respectively in main casing and axis casing, and motor body mandrel and axis are arranged in parallel；It is characterized in that motor body is the default minor structure of outer rotor, gear drive includes first axle tooth, the first transmission gear, transmission shaft, the second axis tooth and the second transmission gear, transmission shaft is pivotally mounted in main casing, first transmission gear inner ring is connected through clutch with transmission shaft, first axle tooth is set on mandrel and engages with the first transmission gear, and the second axis tooth is set on transmission shaft and engages with the second transmission gear, the second transmission gear is fixed on axis, and chain wheel is fixed on the second transmission gear.This motor has higher output torque under the premise of ensuring reduction ratio, and compact-sized, positions on vehicle frame more reliable and more stable.
Description
Technical field
The utility model relates to a kind of large torque compact side hanging built-in motors.
Background technique
Built-in motor is the general name for a kind of power mechanism being now widely used on electric bicycle, the composition of this set mechanism
Generally include shell, motor body, gear drive, clutch, axis and chain wheel.
Axis is usually fit directly on shell by the built-in motor of known row industry routine, i.e., shell is using monoblock type
For shell without distinguishing special axis installing structure, entire shell is more too fat to move, necessary on electric bicycle when actual installation
The special matched hanger (including Five-way tube) of design carrys out fixing shell.When envelope outer diameter is larger, insertion placement shell on hanger
Five-way tube to be often also made big.Therefore the vehicle frame specification of conventional built-in motor and electric bicycle is all one-to-one
, built-in motor can not be individually adapted on the vehicle frame of different size, this just brings centainly to the production of built-in motor and use
Limitation.
Design has a kind of side hanging built-in motor in current industry thus, and axis and motor body mandrel are arranged in parallel, lead to
Cross the axis casing for drawing placement axis on the shell so as to plugging in fitting common-use size on the market frame five-through pipe
It is interior, and positioning node is set again on shell and is freely connected and fixed with vehicle frame.Therefore this kind of side hanging built-in motor with hanger without matching
It closes, the vehicle frame of most of specifications on the market can be adapted to, there is good adaptability.
Although having many advantages, such as, in actual use, above-mentioned side hanging built-in motor still exposes the following ask
Topic:
1) the motor body part of existing side hanging built-in motor is all made of outside internal rotor for the considerations of increasing reduction ratio
The structure type of stator, the disadvantage is that motor output torque is small.And in order to increase motor output torque, current way is will be intermediate
The diameter of rotor is done greatly, but results in peripheral stator in this way and for disposing their shell overall dimensions also to increase accordingly.This
For not against the fixed side hanging built-in motor of hanger, it is clear that bigger volume and heavier weight not can guarantee more
What is positioned on vehicle frame surely leans on.
2) between motor body and axis gear drive and clutch device distribution structure often design more
Complicated too fat to move, the transmission gear that clutch is especially placed in axis one end radially, does so and on the one hand increases axis
The axial dimension of end shell, cause entire shell can not flattening, be unfavorable for the gravity balance after same vehicle frame reclines, it is fixed to influence
Position stability；On the other hand, the transmission gear of axis one end originally will be engaged with the transmission gear of motor body output end, and from
The insertion of clutch further increases the radial dimension of entire shell, so that the spacing distance between axis and motor body mandrel
It increases, is equally consolidated not only bad for what side hanging built-in motor positioned on vehicle frame, and waste sheathing material, raising is produced into
This.
3) axis one end needs that chain wheel locating rack is disposed to fix chain wheel, also results in the axial ruler of axis end shell
It is very little, cause entire shell can not flattening, be unfavorable for the gravity balance after same vehicle frame reclines, influence position stability.
Summary of the invention
The utility model aim is: providing for deficiency existing for the existing side hanging built-in motor mentioned in background technique
A kind of large torque compact side hanging built-in motor, being mounted on the vehicle frame of electric bicycle has better position stability,
And saving material reduces production cost.
The technical solution of the utility model is: a kind of large torque compact side hanging built-in motor, including shell, motor sheet
Body, clutch, gear drive, axis and chain wheel, shell include the connected main casing and axis casing in one end, motor body
In main casing, and middle shaft rotation is assemblied in axis casing, and the mandrel of motor body and axis are arranged in parallel；It is special
Sign is that motor body uses the default minor structure of outer rotor, and gear drive includes first axle tooth, the first transmission gear, passes
Moving axis, the second axis tooth and the second transmission gear, transmission shaft are pivotally mounted in main casing, and the inner ring of the first transmission gear is through clutch
Device is connected with transmission shaft, and first axle tooth is set on mandrel and engages with the first transmission gear, and the second axis tooth is set on transmission shaft
And engaged with the second transmission gear, the second transmission gear is fixed on axis, and chain wheel is fixed on the second transmission gear.
Further, mounting rack is equipped in main casing described in the utility model, motor body includes stator, rotor, core
Axis, stator support and rotor flywheel, stator support are fixed on mounting rack, and stator is fixed on stator support, mandrel by
Mandrel bearing is assemblied in stator center, mandrel one end fixed rotor flywheel, which covers in stator peripheral, and rotor is fixed on
The inner ring of rotor flywheel, and the mandrel other end passes through the axis hole being provided on mounting rack and the first axle tooth by molding thereon
It is engaged with the first transmission gear, the mandrel bearing for assembling mandrel also is provided in axis hole.
Further, main casing described in the utility model includes by the fixed left housing of connector sequence, centre
Casing and right aling cap, the mounting rack are shaped in intermediate casing inner wall, and first transmission gear is located in intermediate casing,
The axis casing is connected with right aling cap outer wall；The shell further includes the right end cap being fastened with right aling cap, described
Second transmission gear is set in the cavity that right aling cap and right end cap surround, and the both ends of the drive shaft is respectively by transmission shaft bearing pivot
Turn to be set on mounting rack and right aling cap inner wall, transmission shaft one end passes through right aling cap and by the second axis tooth and second thereon
Transmission gear engagement.
Further, the connection for being connected and fixed chain wheel is formed on the second transmission gear described in the utility model
Seat, right end cap center, which is equipped with, stretches out the axis hole being connected and fixed with chain wheel for attachment base, is equipped with and is set on attachment base in axis hole
Gear-bearing；Meanwhile the bottom bracket bearing of same axis assembly, second driving cog are equipped in the axis casing and right end cap
Wheel, which is cooperated with axis by keyway, to be fixed, and the center of the second transmission gear is further fixed on the plane axis being sheathed on axis
It holds.
Further, the first transmission gear described in the utility model is nylon gear.
Further, clutch described in the utility model is unidirectional needle roller clutch.
Further, chain wheel cover is further fixed on chain wheel described in the utility model.
Further, bottom bracket axle pipe described in the utility model is used for the Five-way tube assembly on electric bicycle fame,
And one end outer wall that axis casing passes through Five-way tube is equipped with the external screw thread cooperated for same nut, and axis casing is locked at
In Five-way tube；The shell is equipped with the engaging lug for opening up location hole simultaneously, for passing through the vehicle of connector and electric bicycle
Frame is fixed.
The utility model has the advantages that:
1) the utility model is compared to conventional side hanging built-in motor, by the way that motor body is changed to outer rotor inner stator knot
Structure can improve the output torque of motor under the premise of ensuring reduction ratio；And pass through apolegamy rotor in practical manufacturing process
Flywheel improves overall dimensions of the rotor radial size without increasing accordingly stator and place shell, consequently facilitating control is entire
Built-in motor volume saves material, production cost is saved, to improve its position stability on electric bicycle fame.
2) rigging position of clutch is transferred to motor from the transmission gear of original axis one end in the utility model
On the transmission gear (the first transmission gear) of ontology output end (mandrel), the meaning for having its important is improved in this way: on the one hand can
Shorten the axial dimension of axis end shell, and make full use of main casing intracavity space, it is ensured that shell integrally tends to flattening, has
Gravity balance after reclining conducive to it with vehicle frame improves position stability；On the other hand, by the way that clutch is placed in shell
Middle position, and be located at and be not directly placed on the first transmission gear of axis, the radial direction of entire shell can be further reduced
Size is conducive to entire side hanging built-in motor in vehicle reasonably to control the spacing distance between axis and motor body mandrel
What is positioned on frame is firm, and saves sheathing material, saves production cost.
3) the chain wheel locating rack on axis is eliminated in the utility model, and chain wheel is directly fixed to the second transmission gear
On, enormously simplify chain wheel assembling structure, and at the same time reduce the axial dimension of axis end enclosure so that shell be easier to it is flat
Graduation similarly serves to favor the gravity balance after it reclines with vehicle frame, improves position stability.Cancelling chain wheel locating rack can also save
Production cost simplifies assembly manipulation.
4) clutch preferentially uses unidirectional needle roller clutch in the utility model, and this clutch configuration is small and exquisite, is easy to same
Gear binding design, can greatly reduce gear radial dimension, to reduce the radial dimension of entire shell；And gear passes through
The more firm concentration of torque on transmission shaft is applied to by the clutch, can be improved the operating reliability and effect of transmission mechanism
Rate.
5) the first transmission gear in the utility model preferentially uses nylon gear, between the metal shaft tooth on mandrel
Gearing noise it is lower, the running noise of entire transmission mechanism can be mitigated to a certain extent.And it is pointed out that this
Since metal clutch is placed between the inner ring of nylon gear and transmission shaft in case, can enhance nylon gear with from
Torque between clutch promotes transmission mechanism functional reliability, and so there is no need to dispose to be connected with transmission shaft again in nylon gear inner ring
Metal inserted piece, production cost can be saved.
6) further excellent by having been done to main casing and its association structure between axis casing in the utility model
Change and improve, reduce shell exterior axial dimension, inner space is rationally utilized, so that entire built-in motor more tends to be flat
Change, the gravity balance after reclining conducive to it with vehicle frame, improves position stability.And main casing is divided into left cover in the utility model
Shell, intermediate casing and right aling cap, and the design that axis casing is connected with right aling cap outer wall is easily assembled and is opened system
It makes.
7) chain wheel cover is fixed in the utility model on the outside of chain wheel, grey anti-gray can be kept off for chain wheel, prevents it from crossing senilism
Change loss, prolongs its service life.
8) plane bearing is added between the second transmission gear and axis in the utility model, greatly promotes the axial position of axis
The wearability and stationarity of shifting.
Detailed description of the invention
The utility model is further described with reference to the accompanying drawings and embodiments:
Fig. 1 is the cross-sectional view of the structure of the utility model.
Wherein: 1, clutch；2, axis；3, chain wheel；4, main casing；4a, left housing；4b, intermediate casing；4c, right aling cap；
5, axis casing；6, mandrel；7, rotor；8, stator；9, first axle tooth；10, the first transmission gear；11, transmission shaft；12, second
Axis tooth；13, the second transmission gear；13a, attachment base；14, mounting rack；15, stator support；16, rotor flywheel；17, mandrel axis
It holds；18, right end cap；19, transmission shaft bearing；20, bottom bracket bearing；21, plane bearing；22, chain wheel cover；23, Five-way tube；24, spiral shell
It is female；25, engaging lug；26, gear-bearing.
Specific embodiment
Embodiment: below with reference to shown in Fig. 1, to the tool of this large torque compact side hanging built-in motor of the utility model
Body embodiment is described in detail as follows:
With routine techniques it is the same its with shell, motor body, clutch 1, gear drive, axis 2 and chain wheel 3,
Shell includes the connected main casing 4 and axis casing 5 in one end, and motor body is set in main casing 4, and 2 rotating dress of axis is assigned in
In axis casing 5, and the mandrel 6 of motor body and axis 2 are arranged in parallel.
The core improvement of the utility model be motor body using 7 inner stator of outer rotor, 8 structure, and gear drive
By first axle tooth 9, the first transmission gear 10, transmission shaft 11, the second axis tooth 12, the second transmission gear 13,19 and of transmission shaft bearing
Gear-bearing 26 collectively forms.Transmission shaft 11 is pivotally mounted in main casing 4, and the inner ring of the first transmission gear 10 is through clutch 1
It is connected with transmission shaft 11, first axle tooth 9 is set on mandrel 6 and engages with the first transmission gear 10, and the second axis tooth 12 is set to and passes
It is engaged on moving axis 11 and with the second transmission gear 13, the second transmission gear 13 is fixed on axis 2, and chain wheel 3 is fixed on second
On transmission gear 13.
Specifically as shown in connection with fig. 1, the main casing 4 includes by the fixed left housing 4a of screw sequence, intermediate casing 4b
With right aling cap 4c, mounting rack 14 is formed on intermediate casing 4b inner wall.The motor is by including stator 8, rotor 7, mandrel 6, determining
Submounts 15, rotor flywheel 16 and mandrel bearing 17 are constituted, and stator support 15 is fixed on mounting rack 14, and stator 8 is fixed on
On stator support 15, mandrel 6 is assemblied in 8 center of stator, 6 one end fixed rotor flywheel 16 of mandrel, this turn by mandrel bearing 17
Sub- flywheel 16 covers in 8 periphery of stator, and rotor 7 is fixed on the inner ring of rotor flywheel 16, and 6 other end of mandrel passes through on mounting rack 14
The axis hole that is provided with simultaneously is engaged by the first axle tooth 9 of molding thereon with the first transmission gear 10, also is provided with being used in axis hole
Assemble the mandrel bearing 17 of mandrel 6.
First transmission gear 10 is located in intermediate casing 4b, and the axis casing 5 is linked to be one with right aling cap 4c outer wall
Body；The shell further includes the right end cap 18 being fastened with right aling cap 4c, and second transmission gear 13 is set to right aling cap 4c
In the cavity surrounded with right end cap 18,11 both ends of transmission shaft pivot by transmission shaft bearing 19 be set to 14 He of mounting rack respectively
On right aling cap 4c inner wall, 11 one end of transmission shaft passes through right aling cap 4c and by the second axis tooth 12 and the second driving cog thereon
13 engagement of wheel.
The attachment base 13a for being connected and fixed chain wheel 3, right end are formed on second transmission gear 13 described in the present embodiment
18 center of lid, which is equipped with, stretches out the axis hole being connected and fixed with chain wheel 3 for attachment base 13a, is equipped with and is set on attachment base 13a in axis hole
Gear-bearing 26；Meanwhile the bottom bracket bearing 20 that same axis 2 assembles is equipped in the axis casing 5 and right end cap 18, it is described
Second transmission gear 13, which is cooperated with axis 2 by keyway, to be fixed, and the center of the second transmission gear 13 is further fixed on and is sheathed on
Plane bearing 21 on axis 2.
First transmission gear 10 described in the present embodiment is nylon gear, and the clutch 1 is unidirectional needle roller clutch.
Chain wheel cover 22 is further fixed on chain wheel 3 described in the present embodiment.
Simultaneously in conjunction with shown in Fig. 1, the present embodiment is the same with routine techniques in practical set, and the axis casing 5 is used
In insertion electric bicycle fame on Five-way tube 23 in, and axis casing 5 pass through Five-way tube 23 one end outer wall be equipped with use
In the external screw thread of same nut 24 cooperation, axis casing 5 is locked in Five-way tube 23；Simultaneously the shell (right aling cap 4c and
Right end cap 18) it is equipped with the engaging lug 25 for opening up location hole, for being fixed by the vehicle frame of screw and electric bicycle.
Certainly the above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with this
The people of technology can understand the content of the utility model and implement accordingly, and the protection model of the utility model can not be limited with this
It encloses.Any modifications made in accordance with the spirit of the main technical solutions of the utility model should all cover the guarantor in the utility model
Within the scope of shield.
Claims (8)
1. a kind of large torque compact side hanging built-in motor, including shell, motor body, clutch (1), gear drive,
Axis (2) and chain wheel (3), shell include the connected main casing (4) and axis casing (5) in one end, and motor body is set to main casing
(4) in, and axis (2) rotating dress is interior assigned in axis casing (5), and mandrel (6) cloth parallel with axis (2) of motor body
It sets；It is characterized in that motor body uses outer rotor (7) inner stator (8) structure, and gear drive includes first axle tooth
(9), the first transmission gear (10), transmission shaft (11), the second axis tooth (12) and the second transmission gear (13), transmission shaft (11) pivot
It is installed in main casing (4), the inner ring of the first transmission gear (10) is connected through clutch (1) with transmission shaft (11), first axle tooth
(9) it is set on mandrel (6) and engage with the first transmission gear (10), and the second axis tooth (12) is on transmission shaft (11) and with the
Two transmission gears (13) engagement, the second transmission gear (13) is fixed on axis (2), and chain wheel (3) is fixed on the second driving cog
It takes turns on (13).
2. a kind of large torque compact side hanging built-in motor according to claim 1, it is characterised in that the main casing (4)
Interior to be equipped with mounting rack (14), motor body includes stator (8), rotor (7), mandrel (6), stator support (15) and rotor flywheel
(16), stator support (15) is fixed on mounting rack (14), and stator (8) is fixed on stator support (15), mandrel (6) by
Mandrel bearing (17) is assemblied in stator (8) center, mandrel (6) one end fixed rotor flywheel (16), which covers in
Stator (8) periphery, rotor (7) is fixed on the inner ring of rotor flywheel (16), and mandrel (6) other end is passed through and opened on mounting rack (14)
Some axis holes are simultaneously engaged by the first axle tooth (9) of molding thereon with the first transmission gear (10), also are provided with using in axis hole
In the mandrel bearing (17) of assembly mandrel (6).
3. a kind of large torque compact side hanging built-in motor according to claim 2, it is characterised in that the main casing (4)
Including by the fixed left housing (4a) of connector sequence, intermediate casing (4b) and right aling cap (4c), the mounting rack (14) one
It is body formed in intermediate casing (4b) inner wall, first transmission gear (10) is located in intermediate casing (4b), the axis casing
(5) it is connected with right aling cap (4c) outer wall；The shell further includes the right end cap (18) being fastened with right aling cap (4c), institute
The second transmission gear (13) are stated in the cavity that right aling cap (4c) and right end cap (18) surround, transmission shaft (11) both ends point
It does not pivot and is set on mounting rack (14) and right aling cap (4c) inner wall by transmission shaft bearing (19), transmission shaft (11) one end passes through the right side
Capping (4c) is simultaneously engaged by the second axis tooth (12) thereon with the second transmission gear (13).
4. a kind of large torque compact side hanging built-in motor according to claim 3, it is characterised in that second transmission
The attachment base (13a) for being connected and fixed chain wheel (3) is formed on gear (13), right end cap (18) center is equipped with for attachment base
(13a) stretches out the axis hole being connected and fixed with chain wheel (3), is equipped with the gear-bearing (26) being set on attachment base (13a) in axis hole；
Meanwhile the bottom bracket bearing (20) of same axis (2) assembly is equipped in the axis casing (5) and right end cap (18), described second
Transmission gear (13) and axis (2) are cooperated by keyway to be fixed, and the center of the second transmission gear (13) is further fixed on and is arranged
In the plane bearing (21) on axis (2).
5. a kind of large torque compact side hanging built-in motor according to claim 1, it is characterised in that first transmission
Gear (10) is nylon gear.
6. a kind of large torque compact side hanging built-in motor according to claim 1, it is characterised in that the clutch (1)
For unidirectional needle roller clutch.
7. a kind of large torque compact side hanging built-in motor according to claim 1, it is characterised in that on the chain wheel (3)
It is further fixed on chain wheel cover (22).
8. a kind of large torque compact side hanging built-in motor according to claim 1, it is characterised in that the axis casing
(5) for assembling with the Five-way tube (23) on electric bicycle fame, and axis casing (5) passes through the one end of Five-way tube (23)
Outer wall is equipped with the external screw thread for same nut (24) cooperation, and axis casing (5) is locked in Five-way tube (23)；It is described simultaneously
Shell is equipped with the engaging lug (25) for opening up location hole, for being fixed by the vehicle frame of connector and electric bicycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821351274.5U CN208715405U (en) | 2018-08-21 | 2018-08-21 | A kind of large torque compact side hanging built-in motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821351274.5U CN208715405U (en) | 2018-08-21 | 2018-08-21 | A kind of large torque compact side hanging built-in motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208715405U true CN208715405U (en) | 2019-04-09 |
Family
ID=65978812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821351274.5U Active CN208715405U (en) | 2018-08-21 | 2018-08-21 | A kind of large torque compact side hanging built-in motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208715405U (en) |
-
2018
- 2018-08-21 CN CN201821351274.5U patent/CN208715405U/en active Active
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