阅读说明：本技术 一种定子组件 (Stator assembly ) 是由 毕海涛 张洁 陈东传 王远磊 于 2021-11-12 设计创作，主要内容包括：本发明涉及电机领域,尤其涉及一种定子组件。本发明提供了一种定子组件,包括机壳、固定设置在所述机壳内的定子组件、位于所述定子组件底部的定位架和设置在所述定位架上的霍尔元件架,其中,所述定位架上至少设有一个定位环,每个所述定位环上设有若干与所述霍尔元件架适配的定位槽,以及所述定位槽内至少设有一个定位销,所述定位销与所述霍尔元件架上的定位孔卡接；或者,所述定位架上至少设有两个与所述霍尔元件架上的定位孔卡接的定位销。通过定位孔和定位销的卡接能够轴向限位定位架上的霍尔元件架。通过定位架的设置能够限制霍尔元件架的径向滑动和周向转动,从而将霍尔元件架定位。(The invention relates to the field of motors, in particular to a stator assembly. The invention provides a stator assembly, which comprises a shell, a stator assembly fixedly arranged in the shell, a positioning frame positioned at the bottom of the stator assembly and a Hall element frame arranged on the positioning frame, wherein at least one positioning ring is arranged on the positioning frame, a plurality of positioning grooves matched with the Hall element frame are arranged on each positioning ring, at least one positioning pin is arranged in each positioning groove, and the positioning pins are clamped with the positioning holes in the Hall element frame; or at least two positioning pins clamped with the positioning holes in the Hall element rack are arranged on the positioning rack. The Hall element rack on the positioning rack can be axially limited through the clamping connection of the positioning holes and the positioning pins. The Hall element rack can be limited in radial sliding and circumferential rotation through the positioning frame, and therefore the Hall element rack is positioned.)

1. A stator assembly, characterized in that,

comprises a machine shell (100), a stator assembly (110) fixedly arranged in the machine shell (100), a positioning frame (120) positioned at the bottom of the stator assembly (110) and a Hall element frame (130) arranged on the positioning frame (120),

the positioning frame (120) is at least provided with one positioning ring (121), each positioning ring (121) is provided with a plurality of positioning grooves (122) matched with the Hall element frame (130), at least one positioning pin (123) is arranged in each positioning groove (122), and each positioning pin (123) is clamped with the corresponding positioning hole (131) in the Hall element frame (130); alternatively, the first and second electrodes may be,

and at least two positioning pins (123) clamped with the positioning holes (131) in the Hall element rack (130) are arranged on the positioning rack (120).

2. The stator assembly of claim 1,

the bottom of the machine shell (100) is provided with a machine cover (140), wherein,

an elastic mechanism is arranged between the cover (140) and the positioning frame (120).

3. A stator assembly according to claim 2,

the elastic mechanism is a spring (150), wherein,

one end of the spring (150) is fixed on the cover (140), and the other end of the spring is propped against the positioning frame (120).

4. A stator assembly according to claim 3,

a fixing column (124) is fixed at the bottom of the positioning frame (120), wherein,

the spring (150) is sleeved on the fixed column (124).

5. The stator assembly of claim 1,

the stator assembly (110) comprises a framework (111) and a coil (112), a plurality of supporting columns (113) extend from the bottom of the framework (111), wherein,

the coil (112) is wound on the framework (111);

the supporting column (113) is arranged against the positioning frame (120).

6. A stator assembly according to claim 5,

still be equipped with step frame (114) on skeleton (111), the width of step frame (114) from top to bottom crescent.

7. The stator assembly of claim 1,

the positioning groove (122) is also internally provided with a heat dissipation hole (125).

8. The stator assembly of claim 1,

the number of the positioning rings (121) is two, the positioning grooves (122) are arranged on the two positioning rings (121),

the positions of the two positioning grooves (122) in the radial direction of the two positioning rings (121) correspond to each other.

9. The stator assembly of claim 1,

the positioning frame (120) is made of plastic.

10. The stator assembly of claim 1,

the positioning ring (121) is provided with a fixing hole (126), wherein,

the fixing holes (126) are suitable for placing heat conducting fins.

Technical Field

The invention relates to the field of motors, in particular to a stator assembly.

Background

In recent years, the development of direct drive motors has brought about a vigorous demand for customizing motors, and the hall commutation of brushless motors is a widely applied technology in the technical field of brushless motors, so that the technology of rapidly designing and manufacturing a finished brushless motor system is generated due to the demand.

The existing installation structure of the motor hall element generally adopts the following two modes: the first mode is that the Hall element is installed on a PCB (printed circuit board), the PCB is installed on an insulation framework of a stator slot, or glue is adhered to a stator winding, but the reliability of the structure is poor, the Hall element is easy to fall off from a control circuit board, the installation is troublesome, and the control circuit board is made of an epoxy resin board, so that the cost of the control circuit board is high; the second mode is to install the magnetic ring on the rotating shaft and then install the control circuit board with the hall element on the rear end cover of the motor, but the control circuit board with the structure has the disadvantages of troublesome positioning and installation and low working reliability.

Disclosure of Invention

In order to overcome the technical problems in the prior art, the invention provides a stator assembly, which comprises a shell, a stator assembly fixedly arranged in the shell, a positioning frame positioned at the bottom of the stator assembly and a Hall element frame arranged on the positioning frame, wherein at least one positioning ring is arranged on the positioning frame, a plurality of positioning grooves matched with the Hall element frame are arranged on each positioning ring, at least one positioning pin is arranged in each positioning groove, and the positioning pins are clamped with the positioning holes in the Hall element frame; or at least two positioning pins clamped with the positioning holes in the Hall element rack are arranged on the positioning rack.

Further, a cover is arranged at the bottom of the machine shell, and an elastic mechanism is arranged between the cover and the positioning frame.

Further, the elastic mechanism is a spring, wherein one end of the spring is fixed on the machine cover, and the other end of the spring abuts against the positioning frame.

Furthermore, a fixing column is fixed at the bottom of the positioning frame, wherein the spring is sleeved on the fixing column.

Further, the stator assembly comprises a framework and a coil, wherein a plurality of supporting columns extend from the bottom of the framework, and the coil is wound on the framework; the supporting column props against the positioning frame.

Further, still be equipped with the step frame on the skeleton, the width of step frame from top to bottom crescent.

Furthermore, heat dissipation holes are formed in the positioning grooves.

Furthermore, the number of the positioning rings is two, and the positioning grooves are formed in the two positioning rings, wherein the two positioning grooves in the radial direction of the two positioning rings correspond to each other in position.

Furthermore, the locating rack is made of plastic.

Furthermore, a fixing hole is arranged on the positioning ring, wherein,

the fixing hole is suitable for placing the heat conduction fin.

Has the advantages that: 1. the invention provides a stator assembly, which comprises a shell, a stator assembly fixedly arranged in the shell, a positioning frame positioned at the bottom of the stator assembly and a Hall element frame arranged on the positioning frame, wherein at least one positioning ring is arranged on the positioning frame, a plurality of positioning grooves matched with the Hall element frame are arranged on each positioning ring, at least one positioning pin is arranged in each positioning groove, and the positioning pins are clamped with the positioning holes in the Hall element frame; or at least two positioning pins clamped with the positioning holes in the Hall element rack are arranged on the positioning rack. The Hall element rack on the positioning rack can be axially limited through the clamping of the positioning holes and the positioning pins. The Hall element rack can be limited in radial sliding and circumferential rotation through the positioning frame, and therefore the Hall element rack is positioned.

2. The invention adopts the structure of the plastic positioning frame, saves the cost, meets the requirements of different motors for installing the Hall element frame, is suitable for the motors with different models and has high installation reliability.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the interior structure of the housing of the present invention;

FIG. 3 is an internal view of the overall structure of the present invention;

FIG. 4 is a front view of the positioning frame of the present invention;

FIG. 5 is a schematic view of the reverse side of the positioning frame of the present invention;

FIG. 6 is a schematic diagram of a Hall element holder according to the present invention;

FIG. 7 is a schematic view of the framework structure of the present invention;

in the figure:

100. the motor comprises a machine shell, 110, a stator assembly, 111, a framework, 112, a coil, 113, a support column, 114, a step frame, 120, a positioning frame, 121, a positioning ring, 122, a positioning groove, 123, a positioning pin, 124, a fixing column, 125, a heat dissipation hole, 126, a fixing hole, 130, a Hall element frame, 131, a positioning hole, 140, a machine cover, 150, a spring, 160, a rotor assembly, 170, a screw rod, 180 and a gear assembly.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. In the description of the present invention, it is to be understood that the terms "upper", "top", "bottom", and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be taken as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.

Example one

As shown in fig. 1 to 6, the present invention provides a stator assembly, which includes a casing 100, a stator assembly 110, a positioning frame 120, and a hall element frame 130. The hall element holder 130 is adapted to mount a hall element, and the casing 100 is adapted to wrap and protect other components. The stator assembly 110 is adapted to be energized to generate a magnetic field. The positioning frame 120 is adapted to position the hall element frame 130 within the housing 100. The stator assembly 110 has a rotor assembly 160 disposed therein, and a hall element adapted to detect the position of the rotor magnetic pole. With respect to the above components, a detailed description is given below.

Case 100

The casing 100 includes a cover 140 having a disk shape and a cap disposed above the cover 140, the cap being hollow inside and having a circular cap shape. One end of the opening of the side wall of the machine cap is fixedly connected with the upper end surface of the machine shell 100. The casing 100 is a mounting base of the present invention, and the stator assembly 110, the spacer 120, and the hall element holder 130 are adapted to be placed inside the casing 100. In addition, the casing 100 is made of a rigid material, and the casing 100 can protect internal parts from being damaged due to hard collision between the parts and the outside.

Stator assembly 110

The stator assembly 110 is fixedly disposed in the casing 100, and the stator assembly 110 is annularly disposed on an inner wall of the cover 140. The stator assembly 110 includes a plurality of bobbins 111 and a plurality of coils 112. The stator assembly 110 is internally provided with a rotor assembly 160, the rotor assembly 160 is rotatably disposed inside the stator assembly 110, and the rotating shaft of the rotor assembly 160 is perpendicular to the cover 140. The frame 111 is continuously and annularly disposed, specifically, one end of the frame 111 is attached to the inner wall of the cap, the other end of the frame 111 extends to the axis of the rotor assembly 160 along the axial direction, and the frame 111 is vertically attached to the outer wall of the rotor assembly 160. A group of coils 112 is wound on the clamping grooves of each framework 111, a plurality of supporting columns 113 extend from the bottom of each framework 111, and the supporting columns 113 extend downwards perpendicular to the lower end face of each framework 111. In addition, a screw 170 extends vertically from the rotor assembly 160 to a side away from the cover 140, and a gear assembly 180 is drivingly connected to the side wall of the screw 170 protruding out of the rotor assembly 160, and the gear assembly 180 is engaged with the screw 170 through a bevel gear. When each coil 112 in the stator assembly 110 is energized, the stator assembly 110 can drive the coil 112 to generate a magnetic field capable of pushing the rotor assembly 160 to rotate, the magnetic field pushes the rotor assembly 160 and the screw 170 to rotate synchronously, and the screw 170 drives the gear assembly 180 to rotate synchronously and output torque outwards. Still be equipped with step frame 114 on the skeleton 111, step frame 114's width is crescent from top to bottom. The width of each layer of the step frame 114 is gradually reduced from bottom to top, and the step frame 114 is used for guiding the enameled wire to enter the clamping groove through the step positioning of the step frame 114 when the wire is automatically passed through by the winding machine.

Positioning frame 120

The spacer 120 has a disk shape as a whole, and the spacer 120 is located at the bottom of the stator assembly 110. Specifically, the positioning frame 120 is located at the lower end of the framework 111, and the framework 111 abuts against the positioning frame 120 through the supporting column 113, so that the positioning frame 120 is limited from sliding upwards in the axial direction. The lower end of the positioning frame 120 is vertically fixed with a plurality of fixing posts 124, an outer end of one fixing post 124 is sleeved with an elastic mechanism, in this embodiment, the preferable elastic mechanism is a spring 150, one end of the spring 150 abuts against the cover 140, and the other end abuts against the lower end face of the positioning frame 120. In the process of fixedly connecting the machine shell 100 with the machine cap, the spring 150 can be compressed to have certain rigidity, the spring 150 can limit the positioning frame 120 to axially slide downwards, and the positioning frame 120 can be axially positioned through the arrangement of the spring 150 and the fixing column 124.

The hall element rack 130 is arranged on the upper end surface of the positioning rack 120, in order to realize the effect of positioning the hall element rack 130 by the positioning rack 120, at least one positioning ring 121 is arranged on the positioning rack 120, a plurality of positioning grooves 122 matched with the hall element rack 130 are arranged on each positioning ring 121, at least one positioning pin 123 is arranged in each positioning groove 122, and the positioning pins 123 are clamped with the positioning holes 131 on the hall element rack 130. In the present embodiment, the number of the positioning rings 121 is two, and the number of the positioning pins 123 is two: the positioning rings 121 are arc-shaped, the two positioning rings 121 are coaxially arranged, and a gap is formed between the two positioning rings 121. Each positioning groove 122 is circumferentially opened on the positioning ring 121, and the preferred number of the positioning grooves 122 on one positioning ring 121 is three. The positions of the two positioning grooves 122 located in the radial direction of the two positioning rings 121 correspond to each other, specifically, one positioning groove 122 on the outer positioning ring 121 coincides with the symmetric center of one positioning groove 122 on the inner positioning ring 121, and the connecting lines of the two side walls of the two positioning grooves 122 pass through the center of the positioning ring 121, thereby forming a fan shape. One hall element frame 130 is clamped with the two correspondingly arranged positioning grooves 122, and two side walls of the hall element frame 130 can be respectively attached to two side walls of the positioning grooves 122. In addition, two positioning pins 123 are disposed between the two positioning slots 122, and the positioning pins 123 are distributed in the gaps of the positioning slots 122 in a mirror image manner. In this way, when one positioning ring 121 or one positioning pin 123 is damaged, the other positioning ring 121 and the positioning pin 123 can still clamp and position the hall element holder 130. The positioning hole 131 on the hall element holder 130 is engaged with the positioning pin 123, so that the hall element holder 130 is mounted on the positioning pin 123. The positioning ring 121 is provided with a fixing hole 126, wherein the fixing hole 126 is suitable for placing a heat conducting fin. The heat-conducting fins are columnar, and can be placed in the fixing holes 126 and are suitable for radiating heat in the motor, and meanwhile, if the size of the hall element frame 130 is inconsistent with that of the positioning grooves 122, the positioning holes in the hall element frame 130 can be aligned to the two heat-conducting fins, and the hall element frame 130 is installed on the heat-conducting fins.

In order to position the hall element holder 130 in the positioning ring 121, the present embodiment provides another solution, in which the positioning ring 121 and the positioning pin 123 are engaged with the positioning hole 131 of the hall element holder 130 on the positioning frame 120. The hall element holder 130 can be restricted within the positioning pin 123 by the engagement of the positioning pin 123 with the positioning hole 131, so that it can only rotate about the positioning pin 123. The positioning ring 121 and the positioning grooves 122 formed in the positioning ring 121 and adapted to both side walls of the hall element holder 130 can limit the hall element holder 130 from rotating, so that the hall element holder 130 is positioned.

In order to enhance the heat dissipation performance of the hall element rack 130, a heat dissipation hole 125 is further disposed in each positioning groove 122, the heat dissipation holes 125 are all located below the hall element rack 130, and the area of the heat dissipation hole 125 near the inner side is larger than the area of the heat dissipation hole 125 at the outer side.

In order to reduce the weight and cost of the spacer 120, the spacer 120 is made of plastic.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.