CN107914818B - Spoke motor and bicycle wheel - Google Patents

Abstract

The invention provides a spoke motor and a bicycle wheel, and belongs to the technical field of electric bicycles. It has solved the less problem of battery installation space in the current spoke motor cavity. The spoke motor comprises a mounting shaft, a stator support, a stator and a controller, wherein the stator support is provided with a main frame body which is cylindrical and sleeved on the mounting shaft, and an auxiliary frame body which is annular and fixed on the outer peripheral surface of the main frame body, the stator is fixed on the outer peripheral surface of the auxiliary frame body, the controller is in a circular arc structure and is fixed on one side surface of the auxiliary frame body, the main frame body is provided with a battery groove which is arranged along the axial direction of the mounting shaft, and two ends of the battery groove are respectively positioned on two opposite sides of the stator. This spoke motor has reduced the spare part number in the cavity for constitute the spare part reduction of spoke motor, spoke motor's structure is simpler, makes things convenient for spoke motor's assembly, has still improved the usable space in the wheel hub cavity, and then has increased the installation space of battery in the wheel hub cavity.

Description

Spoke motor and bicycle wheel

technical field

The invention belongs to the technical field of electric bicycles, in particular to a spoke motor and a bicycle wheel.

Background technique

Bicycle is a relatively flexible means of transportation. Traditional bicycles are powered by pedals, while electric bicycles use hub motors to drive wheels and have the function of pedaling. Electric bicycles are fast, time-saving and labor-saving. The batteries, controllers and motors of existing electric bicycles are mostly distributed in different positions of the vehicle body, the installation is complicated and affects the appearance, and the existing structural form is not conducive to bicycle refitting.

At present, China Patent Network discloses a wheel hub motor (authorized announcement number: 204947838U), including a rotating shaft, a spoke hub, a threaded end cap, a disc brake end cap, a stator assembly, a rotor magnetic steel and a wire harness assembly. The threaded end cap and the The disc brake end caps are respectively fixed on the two ends of the spoke hub and form a cavity with the spoke hub. The threaded end cap and the disc brake end cap are respectively arranged on the rotating shaft through bearings. The stator assembly is located in the cavity and fixed on the rotating shaft, the rotor magnetic steel is fixed on the inner wall of the spoke hub and arranged opposite to the stator assembly, one end of the wire harness assembly is connected to the stator assembly, The other end is led out of the cavity, and the in-wheel motor also includes a controller and a battery. A controller box is also arranged in the cavity, and the control box is sleeved on the rotating shaft and relatively stationary with the rotating shaft. The controller is installed in the controller box, the cavity is also provided with a battery box, the battery box is sleeved on the rotating shaft and relatively stationary with the rotating shaft, and the battery is installed in the battery box.

The above wheel hub motor structure has the following defects: 1. There is a cavity formed between the threaded end cover and the disc brake end cover, the controller is installed in the cavity through the controller box, and the battery is installed in the cavity through the battery box, so that the hub There are many parts in the motor, and the assembly of the hub motor is inconvenient; 2. The battery box and the controller box need to occupy a certain space in the cavity, which reduces the space for installing the battery in the cavity, which is not conducive to the battery life of the hub motor; 3. The cavity space between the battery box and the controller box of this structure is wasted, which does not conform to the compact design of the volume of the hub motor.

Contents of the invention

The purpose of the present invention is to solve the above-mentioned problems in the prior art, and propose a spoke motor and a bicycle wheel. The technical problem to be solved by the present invention is: how to increase the battery installation space in the cavity of the spoke motor.

The purpose of the present invention can be achieved through the following technical solutions: a spoke motor, comprising a mounting shaft, a stator bracket, a stator and a controller, the stator bracket has a cylindrical main frame and is sleeved on the mounting shaft and a An annular sub-frame body fixed on the outer peripheral surface of the main frame body, the stator is fixed on the outer peripheral surface of the sub-frame body, it is characterized in that the controller has an arc-shaped structure and is fixed on one side of the sub-frame body Above, the main frame body has a battery slot arranged along the axial direction of the installation shaft, and the two ends of the battery slot are respectively located on opposite sides of the stator.

First of all, when the spoke motor is assembled, the battery is installed in the battery slot, and the controller is set in an arc shape so that the shape of the controller matches the shape of the sub-frame, so that the controller can be installed on the sub-frame so that the main The diameter of the frame body can be made larger, which is conducive to increasing the volume of the main frame body, thereby increasing the size of the battery slot and improving the installation space of the battery. Compared with the prior art, this structure changes the relationship between the battery and the controller circuit board. The relative position avoids the independent installation of the battery box and the controller box in the hub cavity, reduces the number of components in the cavity, reduces the components constituting the spoke motor, makes the structure of the spoke motor simpler, and facilitates the assembly of the spoke motor. It also improves the available space in the hub cavity, thereby increasing the installation space of the battery in the hub cavity; secondly, the structure of the battery slot makes full use of the space in the hub cavity, so that the battery slot has an axial direction of the installation shaft. The deeper depth further improves the installation space of the battery.

In the aforementioned spoke motor, one side of the sub-frame has an arc-shaped groove matching the shape of the controller, and the controller is fixed in the arc-shaped groove. The structure installs the controller in the arc-shaped groove, which facilitates the installation and positioning of the controller on the sub-frame.

In the aforementioned spoke motor, there are two battery slots, both of which have a semicircular arc in cross-section, and the openings of the two battery slots are facing oppositely; the spoke motor also includes a A battery inserted into the battery slot, one end of the battery has a flange abutting against the opening end of the battery slot. The flange of the battery with this structure is located outside the battery slot, and the battery can be inserted or pulled out of the battery slot through the flange to facilitate the installation and removal of the battery; in addition, because one end of the battery has a flange, the weight of the battery at this end is relatively heavy. The openings of the two battery slots are facing oppositely, so when the batteries are inserted into the two battery slots, the flanged ends of the batteries are facing oppositely, so that the overall force on the main frame is uniform, which is conducive to the stable installation of the battery on the main frame.

In the above-mentioned spoke motor, the spoke motor also includes a hub sleeved on the installation shaft and an annular end cover sleeved on the outer peripheral surface of the main frame, and the end cover is fixed by a fastener. Attach to the open end of the hub. The structure of the end cover exposes the opening of one of the battery slots, and the battery in the battery slot can be replaced and maintained without disassembling the end cover; The structure is reduced and the structure is more compact, which not only facilitates the assembly of the end cover on the spoke motor, but also reduces the manufacturing cost.

In the aforementioned spoke motor, the end cover is connected to the main frame body through a bearing, the inner ring of the bearing is fixed on the outer peripheral surface of the main frame body, and the outer ring of the bearing is fixed on the end cover. This structure makes the end cover rotate relative to the main frame body.

In the aforementioned spoke motor, the bearing is a waterproof bearing. This structure increases the sealing effect of the connection between the end cover and the battery mounting part, making it difficult for water to enter the cavity, and protects the battery and the controller in the cavity.

A bicycle wheel, characterized in that the bicycle wheel includes the above-mentioned spoke motor.

Compared with the prior art, the spoke motor of the present invention has the following advantages: firstly, it avoids setting the battery box and the controller box independently in the hub cavity, reduces the number of components in the cavity, and makes the components of the spoke motor Reduced, the structure of the spoke motor is simpler, which is convenient for the assembly of the spoke motor, and also increases the available space in the hub cavity, thereby increasing the installation space of the battery in the hub cavity; secondly, the structure of the battery slot makes full use of the hub cavity The space in the body makes the battery groove have a deep depth in the axial direction of the installation shaft, thereby further improving the installation space of the battery.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of the spoke motor of the present invention.

Fig. 2 is a schematic diagram of the exploded structure of the spoke motor of the present invention.

Fig. 3 is a schematic structural view of the stator bracket of the present invention.

Fig. 4 is a three-dimensional schematic diagram of the bicycle wheel of the present invention.

In the figure, 1, installation shaft; 2, stator bracket; 20, main frame body; 20a, battery slot; 21, sub-frame body; 21a, controller slot; 3, stator; 4, hub; 40, cavity; 5 , controller; 6, battery; 60, flange; 7, end cover; 8, fastener; 9, bearing; 10, bicycle wheel.

Detailed ways

The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

As shown in Figure 1, Figure 2 and Figure 3, it includes a mounting shaft 1, a stator bracket 2, a stator 3, a hub 4 with a cavity 40, a controller 5 and a battery 6, and the stator bracket 2 and the hub 4 are all pierced On the installation shaft 1 and the stator bracket 2 is located in the cavity 40, the stator bracket 2 includes a cylindrical main frame body 20 sleeved on the installation shaft 1 and an annular body fixed on the outer peripheral surface of the main frame body 20 The sub-frame body 21, the controller 5 has an arc-shaped structure, and one side of the sub-frame body 21 has an arc-shaped groove 21a that matches the shape of the controller 5, and the controller 5 is fixed on the arc-shaped In the shaped groove 21a, the stator 3 is fixed on the outer peripheral surface of the sub-frame body 21. The main frame body 20 has a battery groove 20a arranged in the axial direction of the installation shaft 1. The two ends of the battery groove 20a are respectively Located on opposite sides of the stator 3.

More specifically, there are two battery slots 20a, both of which are semicircular in cross-section, and the openings of the two battery slots 20a face opposite; the spoke motor also includes a motor that matches the shape of the battery slot 20a The battery 6 disposed in the battery slot 20a has a flange 60 abutting against the open end of the battery slot at one end thereof. This structure makes the overall force of the main frame body 20 uniform after the battery 6 is installed in the battery slot 20 a, which is conducive to the stable installation of the battery 6 on the main frame body 20 .

As shown in Figures 1 and 2, the spoke motor also includes a hub 4 sleeved on the installation shaft 1 and an annular end cover 7 sleeved on the outer peripheral surface of the main frame body 20, the end cover 7 Fixedly connected on the open end of hub 4 by fastener 8, described end cover 7 is connected on the main frame body 20 by bearing 9, and the inner ring of described bearing 8 is fixed on the outer peripheral surface of main frame body 20, so The outer ring of the bearing 9 is fixed on the end cover 7. In this embodiment, the bearing 9 is a waterproof bearing. The structure of the end cover 7 makes the opening of one of the battery slots 20a exposed, and the battery 6 in the battery slot 20a can be replaced and maintained without dismantling the end cover 7; the end cover 7 is smaller in volume compared with the prior art , so that the volume of the spoke motor is reduced and the structure is more compact, which not only facilitates the assembly of the end cover 7 on the spoke motor, but also reduces the manufacturing cost.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Although the installation shaft 1, the stator bracket 2, the main frame body 20, the battery slot 20a, the sub-frame body 21, the arc-shaped slot 21a, the stator 3, the hub 4, the cavity 40, the controller 5, and the battery 6. Terms such as flange 60, end cap 7, fastener 8, bearing 9, bicycle wheel 10, etc., but the possibility of using other terms is not excluded. These terms are used only for the purpose of describing and explaining the essence of the present invention more conveniently; interpreting them as any kind of additional limitation is against the spirit of the present invention.

Claims (7)

1. The utility model provides a spoke motor, includes installation axle (1), stator support (2), stator (3) and controller (5), stator support (2) have be cylindrical and cover establish main frame body (20) on installation axle (1) and be annular and fix auxiliary frame body (21) on main frame body (20) outer peripheral face, stator (3) are fixed on the outer peripheral face of auxiliary frame body (21), a serial communication port, controller (5) are convex structure and fix on one side of auxiliary frame body (21), main frame body (20) have battery jar (20 a) that set up along the axial of installation axle (1), both ends of battery jar (20 a) are located the both sides that stator (3) are relative respectively, battery jar (20 a) are provided with two, the radial cross-section of battery jar (20 a) along installation axle (1) is semi-circular, and two battery jar (20 a) have the axial opening of orientation installation axle (1), and the orientation is opposite, the motor still includes and establishes in battery jar (20 a) phase-match with battery jar (20 a) shape.

2. A spoke motor according to claim 1, characterized in that a side of the sub-frame (21) has an arc-shaped groove (21 a) matching the shape of the controller (5), the controller (5) being fixed in the arc-shaped groove (21 a).

3. A spoke motor according to claim 1, characterized in that one end of the battery (6) has a flange (60) which abuts against the open end of the battery compartment.

4. A spoke motor according to claim 1, 2 or 3, characterized in that the spoke motor further comprises a hub (4) sleeved on the mounting shaft (1) and an end cover (7) which is annular and sleeved on the outer peripheral surface of the main frame body (20), wherein the end cover (7) is fixedly connected to the opening end of the hub (4) through a fastener (8).

5. A spoke motor according to claim 4, characterized in that the end cap (7) is connected to the main frame body (20) by means of a bearing (9), an inner ring of the bearing (9) is fixed to the outer circumferential surface of the main frame body (20), and an outer ring of the bearing (9) is fixed to the end cap (7).

6. A spoke motor according to claim 5, characterized in that the bearing (9) is a watertight bearing.

7. A bicycle wheel, characterized in that the bicycle wheel (10) comprises a spoke motor according to any one of claims 1-6.