阅读说明：本技术 轮毂电机的快拆结构和方法以及婴儿推车和电动轮椅 (Quick-release structure and method of hub motor, baby stroller and electric wheelchair ) 是由 李自强 程涛 李开群 夏孙城 于 2019-11-22 设计创作，主要内容包括：本发明揭示了一种轮毂电机的快拆结构和方法以及婴儿推车和电动轮椅。轮毂电机的快拆结构具备：电机轴,该电机轴对转矩进行传递；电机线缆,该电机线缆包括定子线圈绕组的输出线和电机内部信号线,电机线缆从电机轴的中心穿出,电机线缆的末端具有用于与轮毂电机的控制电路连接的接头,接头固定于电机轴中。根据本发明所提供的轮毂电机的快拆结构和方法以及使用其的婴儿推车和电动轮椅,结构简单、紧凑,快拆方便。(The invention discloses a quick-release structure and a quick-release method of a hub motor, a baby stroller and an electric wheelchair. The quick release structure of the in-wheel motor comprises: a motor shaft that transmits torque; the motor cable comprises an output line of a stator coil winding and a motor internal signal line, the motor cable penetrates out of the center of the motor shaft, the tail end of the motor cable is provided with a connector used for being connected with a control circuit of the in-wheel motor, and the connector is fixed in the motor shaft. According to the quick-release structure and the quick-release method of the hub motor, and the baby stroller and the electric wheelchair using the same, which are provided by the invention, the structure is simple and compact, and the quick release is convenient.)

1. The utility model provides a quick detach structure that is used for in-wheel motor between in-wheel motor and wheel seat which characterized in that possesses:

a motor shaft that transmits torque;

a motor cable including an output line of the stator coil winding and a motor internal signal line,

the motor cable passes out from the center of the motor shaft,

the end of the motor cable is provided with a joint for connecting with a control circuit of the in-wheel motor, and the joint is fixed in the motor shaft.

2. The rapid disassembly structure of an in-wheel motor according to claim 1,

the motor shaft has:

the quick-release clamping groove is used for being clamped into a buckle of the wheel seat;

a fixing surface on which the motor shaft and the wheel base are fixed in a rotational direction;

and a positioning groove for positioning a rotation direction of the joint of the motor cable.

3. The rapid disassembly structure of an in-wheel motor according to claim 1,

the motor cable has:

a waterproof groove that waterproofs a surface where a joint of a motor cable is connected with a motor shaft;

location ear, this location ear be used for with the constant head tank cooperation of motor shaft fix a position.

4. The rapid disassembly structure of an in-wheel motor according to claim 3,

and a waterproof ring is arranged on the waterproof groove.

5. The rapid disassembly structure of an in-wheel motor according to claim 1,

the rotation mode of the motor shaft is any one of the following modes: d-shaped shaft type, spline type, square shaft type, double flat shaft type, and non-circular shaft type.

6. The rapid disassembly structure of an in-wheel motor according to claim 1,

the direction of rotation of the joint of the motor cable in the motor shaft is positioned in any one of the following ways: pin positioning, non-circular cross section positioning and tab positioning.

7. The rapid disassembly structure of an in-wheel motor according to claim 1,

the fixing mode between the motor cable joint and the motor shaft is any one of the following modes: tight fit, glue fixation, set screw fixation, and pin fixation.

8. A quick-release method for an in-wheel motor between the in-wheel motor and a wheel seat, the in-wheel motor is provided with a motor shaft and a motor cable, and the quick-release method is characterized by comprising the following steps:

the motor cable is led out from the center of the motor shaft,

the terminal joint of the motor cable is fixed in the motor shaft and is connected with the control circuit of the in-wheel motor.

9. A baby stroller is characterized in that a stroller body is provided,

a quick release structure comprising the in-wheel motor according to any one of claims 1-7.

10. A baby stroller is characterized in that a stroller body is provided,

the method of rapidly disassembling the hub motor according to claim 8 is used to disassemble the hub motor from the wheel seat of the stroller.

11. An electric wheelchair is characterized in that a wheelchair body is provided with a wheelchair body,

a quick release structure comprising the in-wheel motor according to any one of claims 1-7.

12. An electric wheelchair is characterized in that a wheelchair body is provided with a wheelchair body,

the method of rapidly disassembling the hub motor according to claim 8 is used to disassemble the hub motor from the wheel seat of the stroller.

Technical Field

The invention relates to a quick-release structure and a quick-release method of a hub motor, and a baby stroller and an electric wheelchair using the same.

Background

The wheel hub motor is also called wheel built-in motor, and its most important feature is that the power, transmission and brake devices are all integrated into the wheel hub, so that the mechanical part of the electric vehicle is greatly simplified. The coil winding of the hub motor is fixed on the shaft to serve as a stator, the magnet is fixed on the shell to serve as a rotor, the rotor is connected with the stator shaft through a bearing, the outer rotor rotates around the motor shaft under the action of electric drive, and the tire is directly mounted on the rotor, so that the tire can rotate around the shaft.

The hub motor and the vehicle body need to be connected and electrically connected in a mechanical structure, the mechanical structure is that a shaft of the hub motor is fixed with the vehicle body in a mechanical mode, and the electrical connection is that a winding coil, an internal sensor signal wire and the like of the hub motor are connected with a power supply and a controller through conducting wires, so that power supply and control of the motor are achieved.

As shown in fig. 6, the existing in-wheel motor is separated in mechanical connection and electrical connection, i.e. the shaft of the motor is fixed on the frame through mechanical connection, the power line and the signal line are connected with the power supply and the controller through a multi-core cable, and then the upper joint is connected with the power supply and the controller. This kind of mode dismouting is comparatively troublesome, and electrical connection separates alone moreover, has the cable fixed trouble, influences whole outward appearance scheduling problem.

Therefore, whether the defects in the prior art are overcome or not can be overcome, and the quick-release structure and the method for improving the hub motor are provided, so that the structure is simple and compact, the quick release is convenient, and the technical problem to be solved by the technical staff in the field is urgently solved.

Disclosure of Invention

An object of the present invention is to overcome the defects of the prior art and to provide a quick release structure of an in-wheel motor. According to the quick-release structure of the hub motor, which is simple and compact in structure and convenient to quickly release, the electrical interface of the hub motor and the motor shaft are integrated together, so that the mechanical and electrical connectors of the hub motor can be quickly released at the same time.

In order to achieve the above purpose, the present invention proposes the following technical solutions.

A quick release structure of an in-wheel motor is provided with:

a motor shaft that transmits torque;

a motor cable including an output line of the stator coil winding and a motor internal signal line,

the motor cable passes out from the center of the motor shaft,

the end of the motor cable is provided with a joint for connecting with a control circuit of the in-wheel motor, and the joint is fixed in the motor shaft.

The quick-release structure of the hub motor provided by the invention has the advantages of simple and compact structure, convenience in quick release and great economic and safety benefits.

Drawings

Fig. 1 is a schematic view of a quick release manner of a motor shaft to which a quick release structure of a hub motor according to a first embodiment of the present invention is applied.

Fig. 2 is an isometric view of the hub motor and wheel base of fig. 1.

Fig. 3 is a schematic view of the hub motor and the wheel base after being installed.

Fig. 4 is a perspective assembly view of a motor shaft structure of the in-wheel motor.

Fig. 5 is a sectional view showing a manner of fixing the rotation direction of the motor shaft.

Fig. 6 shows another conventional method for quick dismounting of a motor structure and electric quick dismounting.

Detailed Description

The technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.

A first embodiment of the present invention is a quick release structure of an in-wheel motor.

Fig. 1 is a schematic view of a quick release manner of a motor shaft to which a quick release structure of a hub motor according to a first embodiment of the present invention is applied. As shown in fig. 1, fig. 1 shows a hub motor 1 (a tire portion is not shown in the figure) and a wheel base 2 for mounting the hub motor, wherein the wheel base 2 is fixed on a frame of the whole machine. The in-wheel motor 1 includes: the motor comprises shells 11 and 12 of the hub motor, wherein rotor magnets are fixed on the shells 11 and 12; a stator winding 13, the stator winding 13 having a coil thereon; a bearing 14 located between the housings 11, 12 and the motor shaft 16; a key 15 for fixing the stator winding 13 to the motor shaft 16; a motor shaft 16; and the motor cable 17 comprises an output wire of the stator coil winding and a motor internal signal wire, the motor cable 17 penetrates out of the center of the motor shaft 16, and the tail end of the motor cable 17 is provided with a connector for being connected with a motor control circuit.

The wheel seat 2 includes: the wheel-seat housings 21, 22; the quick-release pressing plate 23 is used for quickly inserting the motor; the quick release button 24 can push the quick release buckle after being pressed, so that the hub motor 1 can be detached from the wheel seat 2; after the hub motor 1 is installed in the wheel seat 2, the quick-release buckle 25 is clamped in the clamping groove of the motor shaft 16 to prevent the hub motor 1 from falling off; the quick-release spring 26 is used for pressing the quick-release buckle 25; a control cable splice hold-down plate 27; and a control cable connector 28 which is connected with the control circuit and can be plugged together with the connector of the motor cable 17 to realize the electrical connection between the in-wheel motor 1 and the control circuit.

Here, the internal structure of the in-wheel motor will not be described in detail, and the quick release structure of the in-wheel motor according to the first embodiment of the present invention is applicable to any in-wheel motor, including an in-wheel motor having a speed reduction mechanism therein.

Fig. 2 is an isometric view of the whole structure of the in-wheel motor 1 and the wheel base 2 in fig. 1. Fig. 3 is a schematic view of the hub motor 1 and the wheel base 2 after being installed. As shown in fig. 2, the motor shaft 16 has: the quick release clamping groove 161 is used for clamping a buckle of the wheel seat; the fixing surface 162 fixes the rotation direction between the motor shaft and the wheel base on the fixing surface 162, and prevents the relative rotation between the two.

Fig. 4 is a perspective assembly view of the motor shaft structure of the in-wheel motor 1, wherein the motor cable 17 is actually inside the motor shaft 16, which is also shown here for clarity of description, and the control cable connector 28 is actually mounted inside the wheel base 2, which is also shown here for clarity of description. As shown in fig. 4, the motor shaft 16 further has a positioning groove 163, which is here a mounting position of the joint of the motor cable 17, achieving the rotational direction positioning of the joint of the motor cable 17. The motor cable 17 includes: a waterproof groove 171, in which a waterproof ring can be installed, and waterproof means such as gluing and waterproofing can be used to waterproof the surface of the motor cable 17 connected to the motor shaft 16; the positioning ears 172 are engaged with the positioning slots 163 on the motor shaft 16 to realize positioning, and the number of the positioning ears 172 is not limited, and the number of the positioning ears 172 can be set as required. The rotational direction positioning of the joint of the motor cable 17 in the motor shaft 16 is not limited to the illustrated form, and may be pin positioning, non-circular cross-sectional positioning, tab positioning, or the like. The fixing between the joint of the motor cable 17 and the motor shaft 16 is not limited to the illustrated form, and may be other fixing forms such as tight fit, glue fixation, set screw fixation, pin fixation, and the like. The connection between the motor cable 17 and the control cable connection 28 can also be made watertight.

Fig. 5 is a sectional view showing a manner of fixing the rotational direction of motor shaft 16. The fixed rotational direction of the motor shaft 16 is not limited to the D-shaped shaft 1621 shown in fig. 5, but may be any other form that makes a plane on the shaft, the number of planes is not limited, the angle between the planes is not limited, such as 1622 and 1623, the spline is provided, such as 1624, the spline is provided, such as 1625, the shaft may be directly made into a polygonal form, such as 1626, or any other non-circular cross section, such as 1627.

As described above, with the quick release structure of the in-wheel motor according to the first embodiment, the electrical interface of the in-wheel motor is integrated with the motor shaft, so that the mechanical and electrical joints of the in-wheel motor can be quickly released at the same time.

A second embodiment of the present invention is a method of quickly disassembling an in-wheel motor. The hub motor is provided with a motor shaft and a motor cable, and the quick-release method comprises the following steps: the motor cable penetrates out of the center of the motor shaft and is fixed with the motor shaft, and the joint at the tail end of the motor cable is connected with a control circuit of the in-wheel motor.

Since the quick release method of the second embodiment corresponds to the quick release structure of the first embodiment, most elements of the first embodiment are also applied to the second embodiment.

A third embodiment of the present invention is a stroller. The stroller includes the quick release structure of the hub motor of the first embodiment. In addition, the baby stroller may be configured such that the hub motor and the wheel seat of the baby stroller are detached from each other by using the method of rapidly detaching the hub motor according to the second embodiment.

The quick release structure of the in-wheel motor of the first embodiment and the quick release method of the in-wheel motor of the second embodiment are not limited to be applied to a stroller, but may also be applied to an electric wheelchair, an electric bicycle, an electric scooter, a balance car, and the like.

It should be noted that, each unit mentioned in each device embodiment of the present invention is a logical unit, and physically, one logical unit may be one physical unit, or may be a part of one physical unit, or may be implemented by a combination of multiple physical units, and the physical implementation manner of these logical units itself is not the most important, and the combination of the functions implemented by these logical units is the key to solve the technical problem provided by the present invention. Furthermore, the above-mentioned embodiments of the apparatus of the present invention do not introduce elements that are less relevant for solving the technical problems of the present invention in order to highlight the innovative part of the present invention, which does not indicate that there are no other elements in the above-mentioned embodiments of the apparatus.

It is to be noted that in the claims and the description of the present patent, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, same element in a process, method, article, or apparatus that comprises the element.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.