TWM613795U - Motor transmission line set of electric auxiliary bicycle - Google Patents

Abstract

This creation is an electric-assisted bicycle motor transmission line set, which is mainly designed to be modularized with the transmission line. It has the advantages of convenient electrical connection with the motor, waterproof and not easy to be pulled off. A ball bearing is provided between the hub axle hole of the bicycle and the wheel support shaft, the motor is fixed inside the hub through the support shaft, and the transmission line set and the motor are electrically connected and then pass through the hub to provide the motor power to drive the hub. The hub rotates relative to the support shaft to drive the wheels to rotate. The feature is that the inner end of the support shaft located inside the hub is provided with a positioning plate for the motor assembly and fixation, the positioning plate is provided with a notch, and the transmission line assembly is integrated at the end A waterproof plug that is clamped in the gap and has a waterproof function is formed, and a stop part extending laterally from the bottom of the waterproof plug and stopping at the inner side of the positioning plate, so as to prevent the transmission line group from being pulled off and damaged.

Description

Electric auxiliary bicycle motor transmission line group

This creation is a motor transmission line set applied to an electric assisted bicycle. The transmission line set is modularized to facilitate electrical connection with the motor, and has the advantages of being waterproof and not easy to be pulled off.

In recent years, under the concept of focusing on green energy and leisure life, the public's demand for green transportation has increased significantly, such as electric bicycles or electric assisted bicycles. Taking electric assisted bicycles as an example, the motors can be divided into hub motors and hub motors according to the driving position. Mid-mounted motor, in which the hub motor is installed inside the hub, located on the axis of the front wheel or the rear wheel, when the motor rotates, it can drive the hub to rotate, and then push the wheel forward, achieving the purpose of saving effort.

In the case of a hub motor, the hub has an accommodating space for the motor to be arranged inside, and the motor is correspondingly fixed on the fixing plate at the inner end of the support shaft of the wheel axis, and the outer end of the support shaft passes through the accommodating space The shaft hole of the hub. When the hub motor is installed on the front wheel, the front fork of the bicycle is locked on the outer end of the support shaft. On the one hand, the motor is fixed to the frame, and on the other hand, the hub can be relative to the motor and the support shaft. And the front fork rotates, which in turn drives the wheels to rotate.

Based on the aforementioned design, a ball bearing is provided between the periphery of the support shaft and the hub shaft hole. The inner ring of the ball bearing is fixed to the support shaft, and the outer ring is fixed to the hub shaft hole, so that the support shaft and the hub are fixed. Can be rotated relative to each other. The motor arranged in the hub has a power output shaft. The power output shaft meshes with the internal gear in the hub through a reduction gear set. When the power output shaft rotates due to the operation of the motor, the motor body and the ball bearing The fixed inner ring and the support shaft are in a fixed and stationary state, and the power output shaft can drive the hub and the movable outer ring of the ball bearing to rotate through the reduction gear set, the hub internal gear, and then make the wheels rotate and travel.

In the above structure, the motor must provide power through a fixed transmission line. Therefore, in design, the motor will be provided with terminals or connectors on the housing for electrical connection between the end of the transmission line and the stator of the motor, while the other end of the transmission line is After passing through the perforation of the fixed plate of the support shaft from the inside to the outside, the avoiding hub is positioned along the frame to be electrically connected to the external control system.

Among them, when the bicycle is driving in an outdoor environment, it often encounters severe environmental conditions such as rain, road surface water, and road bumps that make the bicycle bounce and vibrate, so that the transmission line may be pulled, shaken and loosened, or it may cause moisture to escape from a fixed position. The perforation of the board penetrates, so when assembling the transmission line, a waterproof cover is sheathed on the outer side corresponding to the perforation to prevent moisture from penetrating through the perforation; a protective wire cover is sheathed on the inner side corresponding to the perforation to prevent the transmission line from being Damaged by pulling.

However, assembling the protective wire cover, waterproof cover, transmission line and the fixing plate is inconvenient and wastes man-hours. In addition, bicycles often run on bumpy roads and bounce and vibrate, which makes the protective wire cover and waterproof cover very easy to loosen from the perforation. , Loss of waterproof and stop function, and then affect the service life of the motor.

In view of this, the author has accumulated many years of research and practical experience in related fields, and specially created an electric-assisted bicycle motor transmission line set, which improves the long assembly time of the known transmission line and the lack of easy loosening and damage of the assembly structure. .

The purpose of this creation is to provide a motor transmission line set applied to an electric assisted bicycle. The transmission line set is modularly designed to facilitate electrical connection with the motor and has the advantages of being waterproof and not easy to be pulled off.

In order to achieve the above-mentioned purpose, this creation is an electric auxiliary bicycle motor transmission line set. The axis of the bicycle is provided with a hub and a support shaft. A ball bearing is provided between the inner circumference of the hub's shaft hole and the support shaft. The motor is fixed inside the hub through the support shaft, and the transmission line set is electrically connected to the motor and then passes through the hub to provide motor power to drive the hub to rotate relative to the support shaft and drive the wheels to rotate. It is characterized by: The inner end of the support shaft inside the hub is provided with a positioning plate for fixing the housing of the motor. The positioning plate is provided with a notch. The end of the transmission line assembly is integrally formed with a waterproof plug that is held in the notch. The surface of the waterproof plug It is provided with a plurality of water-stop ridges, and the bottom of the waterproof plug extends laterally with a stopper on the inner side of the positioning plate to prevent the transmission line group from being pulled off.

With the above structure, the waterproof plug and the stopper are integrally formed at the end of the transmission line group, and a plurality of water-stop ridges are formed on the waterproof plug, so that the waterproof plug can be directly clamped in the gap when the transmission line group is assembled. The assembly achieves the functions of fixing, waterproofing, electrical connection with the motor, and preventing the transmission line group from being pulled and falling. It does not need to be combined with the protective line cover and the waterproof cover separately as in the known technology. The overall structure is modularized, which greatly saves assembly Working hours.

The following further describes the implementation of each element:

In implementation, the positioning plate is generally circular, and its edge is fixed on the fixed inner ring of the ball bearing, and the gap is located at the edge of the positioning plate and located at the inner circumference of the fixed inner ring of the ball bearing, so that the transmission line group is waterproof One side of the outer edge of the plug and the plurality of water stop ridges abuts against the inner circumference of the notch, and the other side of the outer edge abuts against the fixed inner ring of the ball bearing.

In implementation, the housing of the motor is provided with a through hole for the stop part of the transmission line group to be embedded from back to front, and the back of the stop part is respectively provided with a terminal group electrically connected to the stator inside the motor, and A stop flange against the periphery of the perforation.

In implementation, the back of the stopping portion has two lugs that can be locked inside the housing of the motor, and the front of the stopping portion is provided with a protrusion that can be fitted into the through hole between the two lugs.

In implementation, a baffle is provided on the outside of the hub, the baffle has a central hole and a through hole, the baffle is sleeved on the support shaft through the central hole, and the through hole can be used for the transmission line group to pass through; The plate is covered on the outer side of the shaft hole of the hub and is combined with the positioning plate to cover the ball bearing, the waterproof plug and the notch.

Compared with the prior art, this creation integrally forms the waterproof plug and the stop at the end of the transmission line group, and forms a plurality of water-stop ridges on the waterproof plug, so that the waterproof plug can be directly clamped on the positioning plate when the transmission line group is assembled. Assembling is completed in the gap of the device, achieving the functions of fixing, waterproofing, electrically connecting with the motor, and preventing the transmission line group from being pulled and falling. After the overall structure is modularized, it greatly saves assembly man-hours and improves the separation and protection of the known technology. The combination of the cable sleeve and the waterproof sleeve leads to a long assembly time, and the combined structure is easily loose and damaged.

The following is based on the technical means of this creation, enumerating the implementation methods suitable for this creation, and the description with the drawings is as follows:

As shown in the first and second figures, this creation is a motor transmission line set applied to an electric assisted bicycle. The motor 100 in the figure is installed on the axis of the front wheel of the bicycle as an example. The shaft is provided with a hub 200 and a support shaft 300. A ball bearing 400 is provided between the inner circumference of the shaft hole 201 of the hub 200 and the inner end of the support shaft 300 located inside the hub 200. The motor 100 passes through the The support shaft 300 is fixed inside the hub 200 and corresponds to the inner end of the support shaft 300.

Since the motor 100 is arranged on the shaft center of the front wheel, after the outer end of the support shaft 300 penetrates the shaft hole 201 of the hub 200, the front fork 500 of the bicycle can be locked to the outer end of the support shaft 300, so that the motor 100 Fixed with the frame, the hub 200 can also be rotated relative to the motor 100, the support shaft 200, and the front fork 500 to drive the wheels to rotate.

Wherein, the tail end of the transmission line set 600 is electrically connected to the motor 100, and the other end passes through the hub 200 and is electrically connected to an external control system (not shown in the figure) to provide the motor 100 to drive the hub 200 to rotate.

As shown in the second and third figures, the inner end of the support shaft 300 is provided with a positioning plate 10, and the positioning plate 10 is provided with a notch 11. The housing 101 of the motor 100 can be fixed in the positioning by a combination of locking and clamping. On the board 10; the end of the transmission line group 600 is provided with a waterproof plug 20, the surface of the waterproof plug 20 is provided with a plurality of water-stop ridges 21, and the bottom of the waterproof plug 20 extends laterally with a stop 22.

As shown in the fourth and fifth figures, when the transmission line set 600 is assembled, the waterproof plug 20 and the plurality of water-stop embossments 21 can be clamped in the notch 11, and at the same time, the stop part 22 can stop at the inner side of the positioning plate 10 to avoid The transmission line group 600 is pulled off. In particular, the waterproof plug 20 and the stopper 22 are integrally formed at the end of the transmission line group 600, and a plurality of water-stop embossments 21 are formed on the waterproof plug 20. The overall structure is modularized design, which greatly saves assembly man-hours. The transmission line group 600 can directly hold the waterproof plug 20 in the gap 11 to complete the assembly.

With the above structure, the transmission line set 600 achieves the function of fixing and waterproofing through the waterproof plug 20, and achieves the function of preventing the transmission line set 600 from being pulled and dropped through the stopper 22, which improves the transmission line set and the protective line cover in the prior art. , Waterproof sleeve combination, resulting in long assembly time and easy loosening and damage of the combined structure.

As shown in Figures 6 and 7, the positioning plate 10 is generally circular when implemented, and its edge is fixed on the fixed inner ring of the ball bearing 400, and the notch 11 is located at the edge of the positioning plate 10 and located between the ball bearing 400 Fix the inner circumference of the inner ring so that when the waterproof plug 20 is assembled in the gap 11, one outer edge of the waterproof plug 20 and the plurality of water-stop ridges 21 abuts against the inner circumference of the gap 11, and the other outer edge abuts The fixed inner ring of the ball bearing 400 can prevent moisture infiltration from the gap.

In the above structure, the stopper 22 is stopped inside the positioning plate 10 to prevent the transmission line group 600 from being pulled and dropped. In order to enhance the stop function, the stopper 22 can be combined with a motor. For example, as shown in the figure, the motor The housing 101 of 100 is provided with an accommodating space, and the housing 101 is provided with a perforation 30, the shape of the perforation 30 corresponds to the outer contour of the stop portion 22, and the stop portion 22 of the transmission line group 600 can be accommodated in The perforation 30 is embedded in the space from back to front, so that the stopper 22 is fixed inside the motor housing 101 to enhance the stopper effect.

When the stop 22 is implemented, a terminal set 23 is provided on the back side of the motor 100, which is electrically connected to the stator 102 inside the motor 100. The stop 22 prevents the transmission line set 600 from being pulled away from the motor, so that the terminal set 23 can be connected to the stator 102. 102 secure electrical connection.

Furthermore, the back of the stop 22 is further provided with a stop flange 24 against the periphery of the through hole 30, and two lugs 25 that can be locked inside the motor housing 101 to fix the position of the stop 22 , And prevent the transmission line group 600 from being pulled and dropped.

In addition, the front of the stopper 22 is provided with a protruding portion 26 that can be fitted into the through hole 30 between the two lugs 25, so that after the stopper 22 is assembled in the motor housing 101, the penetration of moisture from the through hole is reduced.

After the assembly of the transmission line group 600, the positioning plate 10 and the motor 100 is completed, the hub 200 is provided with a baffle 40 outside the shaft hole 201. The baffle 40 has a central hole 41 and a through hole 42 through which the aforementioned baffle 40 penetrates. After the hole 41 is sleeved on the support shaft 300, the transmission line group 600 can be passed through the through hole 42 and fixed on the vehicle frame. The baffle 40 can cover the outer side of the shaft hole 201 of the hub 200 and be combined with the positioning plate 10 to shield the ball bearing 400, the waterproof plug 20 and the notch 11 to achieve waterproof and protective functions, and avoid collision and damage of the ball bearing. .

The above descriptions and drawings of the embodiments only illustrate the preferred embodiments of this creation, and are not intended to limit the scope of this creation. Anything similar or similar to the purpose, structure, device, feature, etc. of this creation should belong to The patent scope of this creation.

100: Motor 101: Shell 102: Stator 200: flower hub 201: Shaft hole 300: Support shaft 400: Ball bearing 500: Fork 600: Transmission line group 10: Positioning board 11: gap 20: Waterproof plug 21: Water stop relief 22: Stop 23: terminal group 24: Stop flange 25: lug 26: Convex 30: Piercing 40: bezel 41: Through hole

The first picture: the schematic diagram of the setting position of this creation. Figure 2: The three-dimensional exploded view of this creation. Figure 3: The three-dimensional exploded view of the transmission line group, positioning plate and motor housing of this creation. Figure 4: The schematic diagram of the combination of the transmission line group, positioning plate and motor housing of this creation. Figure 5: A schematic diagram of the combination of the transmission line group, positioning plate and motor housing of this creation from another angle. Figure 6: A sectional view of the structure of this creation. Figure 7: A partial enlarged view of Figure 6.

100: Motor

101: Shell

102: Stator

200: flower hub

201: Shaft hole

300: Support shaft

400: Ball bearing

600: Transmission line group

10: Positioning board

11: gap

30: Piercing

40: bezel

41: Through hole

Claims (5)

An electric-assisted bicycle motor transmission line set. The axis of the bicycle is provided with a hub and a support shaft. A ball bearing is arranged between the shaft hole of the hub and the support shaft. The motor is fixed on the hub through the support shaft. Inside the hub, and after the transmission line set is electrically connected to the motor, the hub is passed through to provide motor power to drive the hub to rotate relative to the support shaft and drive the wheels to rotate, characterized by: The inner end of the support shaft inside the hub is provided with a positioning plate for fixing the housing of the motor. The positioning plate is provided with a notch. The end of the transmission line assembly is integrally formed with a waterproof plug that is held in the notch. The surface of the waterproof plug A plurality of water-stop convex patterns are provided, and the bottom of the waterproof plug extends laterally with a stopper that stops at the inner side of the positioning plate to prevent the transmission line group from being pulled off. The electric-assisted bicycle motor transmission line set according to claim 1, wherein the positioning plate is generally circular, its edge is fixed on the fixed inner ring of the ball bearing, and the gap is located at the edge of the positioning plate and located between the ball bearings The inner circumference of the inner ring is fixed so that the outer edge of one side of the waterproof plug and the plurality of water-stop ridges of the transmission line set abuts against the inner circumference of the notch, and the other outer edge abuts against the fixed inner ring of the ball bearing. The electric-assisted bicycle motor transmission line set according to claim 1, wherein the housing of the motor is provided with a through hole for the stop part of the transmission line set to be embedded from back to front, and the back of the stop part is respectively provided with a hole The terminal group is electrically connected with the stator inside the motor, and a stop flange abuts against the periphery of the perforation. The electric-assisted bicycle motor transmission line set according to claim 3, wherein the back of the stop portion has two lugs that can be locked inside the housing of the motor, and the front of the stop portion is between the two lugs A convex part that can be fitted into the perforation is convexly provided. The electric auxiliary bicycle motor transmission line set according to claim 1, wherein a baffle is provided outside the hub, the baffle has a central hole and a through hole, and the baffle is sleeved on the support shaft through the central hole, The through hole can allow the transmission line assembly to pass through; the baffle is covered on the outside of the shaft hole of the hub and is combined with the positioning plate to shield the ball bearing, the waterproof plug and the gap.

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