阅读说明：本技术 舵机编码控制结构及舵机模组 (Steering engine code control structure and steering engine module ) 是由 黄亮 丁宏钰 于 2020-12-07 设计创作，主要内容包括：本发明提供了一种舵机编码控制结构及舵机模组,舵机编码控制结构包括电路板组件、固定于电机轴的第一磁环、固定于输出轴的第二磁环、用于检测并记录第一磁环的角位移的第一读头芯片以及用于检测并记录第二磁环的角位移的第二读头芯片,电路板组件包括控制板,第一读头芯片和第二读头芯片固定且电性连接于控制板。本发明提供的舵机编码控制结构及舵机模组,第一读头芯片和第二读头芯片均固定且电性连接于电路板组件的控制板上,无需额外设置承载读头芯片的电路板,也无需使用线缆将第一读头芯片和第二读头芯片电性连接于控制板,可以使舵机模组内部的走线更加简洁、安装更加简单、成本更加低廉,而且不会增加舵机模组的体积。(The invention provides a steering engine coding control structure and a steering engine module, wherein the steering engine coding control structure comprises a circuit board assembly, a first magnetic ring fixed on a motor shaft, a second magnetic ring fixed on an output shaft, a first reading head chip used for detecting and recording the angular displacement of the first magnetic ring and a second reading head chip used for detecting and recording the angular displacement of the second magnetic ring, the circuit board assembly comprises a control board, and the first reading head chip and the second reading head chip are fixed and electrically connected to the control board. According to the steering engine coding control structure and the steering engine module, the first reading head chip and the second reading head chip are both fixed and electrically connected to the control panel of the circuit board assembly, a circuit board for bearing the reading head chips does not need to be additionally arranged, the first reading head chip and the second reading head chip do not need to be electrically connected to the control panel through cables, wiring inside the steering engine module can be simpler, installation is simpler, cost is lower, and the size of the steering engine module cannot be increased.)

1. The utility model provides a steering wheel code control structure which characterized in that: the circuit board assembly comprises a control board, and the first reading head chip and the second reading head chip are fixed and electrically connected to the control board.

2. The steering engine encoding control structure of claim 1, wherein:

the first reading head chip and the second reading head chip are respectively fixed and electrically connected to two opposite surfaces of the control board; alternatively, the first and second electrodes may be,

the first reading head chip and the second reading head chip are respectively fixed and electrically connected to the same surface of the control board.

3. The steering engine encoding control structure of claim 1, wherein: the circuit board assembly also comprises an encoder circuit board inserted on the control board,

the number of the encoder circuit boards is one, and the first reading head chip and/or the second reading head chip are fixed and electrically connected to the encoder circuit boards; alternatively, the first and second electrodes may be,

the number of the encoder circuit boards is at least two, and the first reading head chip and the second reading head chip are respectively fixed and electrically connected to the two encoder circuit boards.

4. The steering engine encoding control structure of claim 1, wherein: the circuit board assembly further comprises a driving board arranged in parallel with the control board, the control board is fixedly connected with the driving board through a connecting column, and the control board is electrically connected with the driving board through a plug terminal pair.

5. The steering engine encoding control structure of claim 1, wherein: the outer diameter of the first magnetic ring is larger than that of the second magnetic ring, or the outer diameter of the second magnetic ring is larger than that of the first magnetic ring.

6. The steering engine encoding control structure of claim 1, wherein: the first magnetic ring and the second magnetic ring are coaxially arranged.

7. Steering wheel module, its characterized in that: the steering engine encoding control structure according to any one of claims 1 to 6, further comprising a motor, a speed reduction assembly driven by a motor shaft of the motor, an output shaft connected to an output end of the speed reduction assembly, and a brake assembly for braking.

8. The steering engine module of claim 7, wherein: a first magnetic ring seat is fixed on the periphery of the motor shaft, and the first magnetic ring is fixed on the first magnetic ring seat; and a second magnetic ring seat is fixed on the periphery of the output shaft, and the second magnetic ring is fixed on the second magnetic ring seat.

9. The steering engine module of claim 8, wherein: the motor shaft and the output shaft are coaxially arranged, and the motor shaft is sleeved on the periphery of the output shaft.

10. The steering engine module of claim 9, wherein: the output shaft is arranged in a hollow mode to form a wire passing hole for a cable to pass through.

11. The steering engine module of claim 7, wherein: the speed reduction assembly is a harmonic reducer, and a wave generator of the harmonic reducer is the motor shaft.

Technical Field

The invention belongs to the technical field of robots, and particularly relates to a steering engine coding control structure and a steering engine module.

Background

For the robot automation industry and the mechanical arm industry, the robot joint steering gear is of great importance, and the performance, the volume and the assembly precision of the joint steering gear have great influence on the use of the whole robot.

In the existing robot joint module, an encoder reading head at a motor end and an encoder reading head at an output end are respectively arranged on independent circuit boards. In spatial arrangement, can increase the length and the volume of steering wheel, need the cable to be connected to on the control panel moreover, lead to walking the line complicacy, the installation of being not convenient for can increase the material moreover, the part increases, is unfavorable for cost control, also is difficult for maintaining.

Disclosure of Invention

The invention aims to provide a steering engine coding control structure and a steering engine module, and aims to solve the technical problems that in the prior art, a reading head of an encoder is arranged on an independent current board, so that wiring is complex and installation is inconvenient.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a steering engine coding control structure, includes circuit board subassembly, is fixed in the first magnetic ring of motor shaft, is fixed in the second magnetic ring of output shaft, is used for detecting and taking notes the first reading chip of the angle displacement of first magnetic ring and is used for detecting and taking notes the second reading chip of the angle displacement of second magnetic ring, circuit board subassembly includes the control panel, first reading chip with second reading chip is fixed and electric connection in the control panel.

In one embodiment, the first readhead chip and the second readhead chip are respectively fixed and electrically connected to two opposite surfaces of the control board; alternatively, the first and second electrodes may be,

the first reading head chip and the second reading head chip are respectively fixed and electrically connected to the same surface of the control board.

In one embodiment, the circuit board assembly further comprises an encoder circuit board plugged on the control board,

the number of the encoder circuit boards is one, and the first reading head chip and/or the second reading head chip are fixed and electrically connected to the encoder circuit boards; alternatively, the first and second electrodes may be,

the number of the encoder circuit boards is at least two, and the first reading head chip and the second reading head chip are respectively fixed and electrically connected to the two encoder circuit boards.

In one embodiment, the circuit board assembly further comprises a driving board arranged in parallel with the control board, the control board and the driving board are fixedly connected through a connecting column, and the control board and the driving board are electrically connected through a plug terminal pair.

In one embodiment, an outer diameter of the first magnetic ring is larger than an outer diameter of the second magnetic ring, or the outer diameter of the second magnetic ring is larger than the outer diameter of the first magnetic ring.

In one embodiment, the first magnetic ring and the second magnetic ring are coaxially disposed.

The invention also provides a steering engine module, which comprises the steering engine coding control structure, a motor, a speed reducing component driven by a motor shaft of the motor, an output shaft connected to the output end of the speed reducing component and a brake component for braking.

In one embodiment, a first magnetic ring seat is fixed on the outer periphery of the motor shaft, and the first magnetic ring is fixed on the first magnetic ring seat; and a second magnetic ring seat is fixed on the periphery of the output shaft, and the second magnetic ring is fixed on the second magnetic ring seat.

In one embodiment, the motor shaft and the output shaft are coaxially arranged, and the motor shaft is sleeved on the periphery of the output shaft.

In one embodiment, the output shaft is hollow and forms a wire passing hole for passing a cable.

In one embodiment, the speed reduction assembly is a harmonic reducer, and the wave generator of the harmonic reducer is the motor shaft.

The steering engine coding control structure and the steering engine module have the beneficial effects that: compared with the prior art, the steering engine coding control structure comprises a circuit board assembly, a first magnetic ring, a second magnetic ring, a first reading head chip and a second reading head chip, wherein the first reading head chip and the second reading head chip are both fixed and electrically connected to a control board of the circuit board assembly, a circuit board for bearing the reading head chips is not required to be additionally arranged, and cables are not required to be used for electrically connecting the first reading head chip and the second reading head chip to the control board, so that wiring inside a steering engine module is simpler, installation is simpler, cost is lower, and the size of the steering engine module is not increased.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a side view of a first steering engine code control structure provided in an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a sectional view of a second steering engine code control structure provided in an embodiment of the present invention;

FIG. 4 is a cross-sectional view of a third steering engine code control structure provided in an embodiment of the present invention;

FIG. 5 is a cross-sectional view of a fourth steering engine code control structure provided in an embodiment of the present invention;

fig. 6 is a cross-sectional view of a steering engine module according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1-a circuit board assembly; 11-a control panel; 111-a first read head chip; 112-a second read head chip; 12-a drive plate; 13-connecting column; 14-a pair of plug terminals; 15-an encoder circuit board; 16-a heat sink; 2-a first magnetic ring; 21-a first magnetic ring seat; 3-a second magnetic ring; 31-a second magnetic ring seat; 4-a motor; 41-motor housing; 42-a stator; 43-a rotor; 5-motor shaft; 6-a speed reduction assembly; 61-a compliant bearing; 62-harmonic meshing component; 7-an output shaft; 8-protective coil; 9-a brake assembly; 91-braking the body; 92-brake seat.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the 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. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The steering engine coding control structure provided by the embodiment of the invention is explained.

In one embodiment of the present invention, referring to fig. 1 and fig. 2, the steering engine encoding control structure includes a circuit board assembly 1, a first magnetic ring 2, a second magnetic ring 3, a first reading head chip 111, and a second reading head chip 112. The circuit board assembly 1 comprises a control board 11, and the control board 11 can control the start and stop of the motor 4, the rotating speed of the output shaft 7 and the like according to the feedback signal. The center of the control plate 11 is provided with a central hole which is circular, and the power supply motor shaft 5 and the output shaft 7 are arranged in a penetrating way. The first magnetic ring 2 is arranged opposite to the first reading head chip 111, the first reading head chip 111 is used for detecting and recording the angular displacement of the first magnetic ring 2, the second magnetic ring 3 is arranged opposite to the second reading head chip 112, and the second reading head chip 112 is used for detecting and recording the angular displacement of the second magnetic ring 3. The first magnetic ring 2 is fixed on a motor shaft 5, the second magnetic ring 3 is fixed on an output shaft 7, the motor shaft 5 is an output end of the motor 4, and the output shaft 7 is an output end of the steering engine module. First reading head chip 111 and second reading head chip 112 are all fixed and electric connection on control panel 11, like this, first reading head chip 111 and second reading head chip 112 need not through cable and control panel 11 electric connection, also need not additionally to set up the circuit board, can reduce the material, reduce the assembly degree of difficulty, reduce the volume of steering wheel module. More specifically, when the steering engine module operates, the output end of the motor 4 rotates to rotate the first magnetic ring 2, and the first reading head chip 111 can detect and record the angular displacement of the first magnetic ring 2, that is, the angular displacement of the output end of the motor 4; accordingly, the output end of the motor 4 is decelerated by the deceleration assembly 6, so that the output shaft 7 rotates, the second magnetic ring 3 fixed to the output shaft 7 rotates, and the second head chip 112 can detect and record the angular displacement of the second magnetic ring 3, that is, the angular displacement of the output shaft 7.

The steering engine coding control structure in the above embodiment, including circuit board assembly 1, first magnetic ring 2, second magnetic ring 3, first reading head chip 111 and second reading head chip 112 are all fixed and electric connection is on circuit board assembly 1's control panel 11, need not additionally to set up the circuit board that bears the reading head chip, also need not to use the cable with first reading head chip 111 and second reading head chip 112 electric connection in control panel 11, can make the inside line of walking of steering engine module more succinct, the installation is simpler, lower cost, and can not increase the volume of steering engine module.

In one embodiment of the present invention, referring to fig. 1 and fig. 2, the circuit board assembly 1 includes a control board 11 and further includes a driving board 12, the driving board 12 is used for driving the motor 4 to work, the driving board 12 and the control board 11 are arranged in parallel to reduce the volume of the circuit board assembly 1 as much as possible, the driving board 12 and the control board 11 are fixedly connected through a connection column 13, and the driving board 12 and the control board 11 are electrically connected through a pair of plug terminals 14. Alternatively, the number of the connection columns 13 is at least two, the connection columns 13 include a support section and a threaded section, the support section has an internal threaded hole, the threaded section of one of the connection columns 13 penetrates through the control board 11, the control board 11 is locked between the support section and the nut by a fastener such as a nut, the support section is supported between the drive board 12 and the control board 11, and the nut section of the other connection column 13 penetrates through the drive board 12 and is connected to the internal threaded hole of the support section of the previous connection column 13, so that the drive board 12 and the control board 11 are fixed to each other. Alternatively, the pair of plug terminals 14 includes a male terminal and a female terminal, one of the male terminal and the female terminal is fixed to the driving board 12, the other of the male terminal and the female terminal is fixed to the control board 11, and the male terminal and the female terminal are plugged into each other to electrically connect the control board 11 and the driving board 12.

Optionally, the first magnetic ring 2 and the second magnetic ring 3 are coaxially arranged, so that the radial occupied space of the steering engine coding control structure can be reduced, and the radial space of the steering engine coding control structure is utilized as much as possible. The central axes of the first magnetic ring 2 and the second magnetic ring 2 may be selected to coincide with the central axis of the motor shaft 5.

In one embodiment of the present invention, referring to fig. 1 and fig. 2, the first reading head chip 111 and the second reading head chip 112 are respectively fixed and electrically connected to two opposite surfaces of the control board 11, and the first magnetic ring 2 and the second magnetic ring 3 are also respectively disposed on two opposite sides of the control board 11, so that the space on two opposite sides of the control board 11 can be fully utilized, and the space occupied by the steering engine encoding control structure can be reduced as much as possible. More specifically, the first readhead chip 111 is disposed on the side of the control board 11 facing the drive board 12, and the second readhead chip 112 is disposed on the side of the control board 11 facing away from the drive board 12; alternatively, the first readhead chip 111 is provided on the side of the control board 11 facing away from the drive board 12, and the second readhead chip 112 is provided on the side of the control board 11 facing the drive board 12.

In other embodiments, referring to fig. 5, the first pick-up chip 111 and the second pick-up chip 112 are fixed and electrically connected to the same surface of the control board 11, and the first magnetic ring 2 and the second magnetic ring 3 are also disposed on the same side of the control board 11. The first readhead chip 111 and the second readhead chip 112 may be disposed on a side of the control board 11 facing away from the driving board 12, so that the first readhead chip 111, the second readhead chip 112, the first magnetic ring 2, and the second magnetic ring 3 may be prevented from interfering with the driving board 12. In other embodiments, the first and second readhead chips 111 and 112 may also be disposed on the side of the control board 11 facing the drive board 12.

Optionally, referring to fig. 1 and fig. 2, the outer diameter of the first magnetic ring 2 is smaller than the outer diameter of the second magnetic ring 3, so that the influence of the magnetic force between the first magnetic ring 2 and the second magnetic ring 3 can be reduced, and the accuracy of angular displacement detection can be improved. Optionally, referring to fig. 3, the outer diameter of the first magnetic ring 2 is larger than the outer diameter of the second magnetic ring 3, so that the influence of the magnetic force between the first magnetic ring 2 and the second magnetic ring 3 can also be reduced, and the accuracy of angular displacement detection is improved. Particularly, when the first readhead chip 111 and the second readhead chip 112 are disposed on the same side of the control plate 11, the outer diameters of the first magnetic ring 2 and the second magnetic ring 3 are not equal to each other, so as to prevent the first magnetic ring 2 and the second magnetic ring 3 from interfering with each other.

In one embodiment of the present invention, referring to fig. 4, the circuit board assembly 1 includes a control board 11 and an encoder circuit board 15, and the encoder circuit board 15 is plugged onto the control board 11. The encoder circuit board 15 can be plugged onto the control board 11 through the plugging terminal pair 14. Optionally, when the circuit board assembly 1 further includes the driving board 12, and the number of the encoder circuit boards 15 is one, the encoder circuit boards 15 are plugged into the side of the control board 11, which is opposite to the driving board 12, so that the plugging and layout of the encoder circuit boards 15 are facilitated, and the encoder circuit boards 15 are prevented from interfering with the driving board 12. When the first readhead chip 111 is fixed and electrically connected to the encoder circuit board 15, the second readhead chip 112 is fixed and electrically connected to the control board 11, and the second readhead chip 112 is also fixed and electrically connected to the other side of the encoder circuit board 15; when the second pick-up chip 112 is fixed and electrically connected to the encoder circuit board 15, the first pick-up chip 111 is fixed and electrically connected to the control board 11, and the first pick-up chip 111 can also be fixed and electrically connected to the other side of the encoder circuit board 15. An encoder circuit board 15 may also be plugged into the side of the control board 11 facing the drive board 12.

Optionally, when the circuit board assembly 1 further includes the driving board 12, and the number of the encoder circuit boards 15 is two, two encoder circuit boards 15 are respectively plugged into two opposite sides of the control board 11, wherein one encoder circuit board 15 is disposed facing the driving board 12, the other encoder circuit board 15 is disposed facing away from the driving board 12, the first readhead chip 111 is electrically connected to the encoder circuit board 15 disposed facing the driving board 12, and the second readhead chip 112 is electrically connected to the encoder circuit board 15 disposed facing away from the driving board 12, or the first readhead chip 111 is electrically connected to the encoder circuit board 15 disposed facing away from the driving board 12, and the second readhead chip 112 is electrically connected to the encoder circuit board 15 disposed facing the driving board 12. The number of the encoder circuit boards 15 may also be three, four, etc., and the first readhead chip 111 and the second readhead chip 112 are respectively fixed and electrically connected to two of the encoder circuit boards 15.

Referring to fig. 6, the invention further provides a steering engine module, which includes the steering engine coding control structure in any of the above embodiments, and further includes a motor 4, a speed reduction assembly 6, an output shaft 7, and a brake assembly 9. The output end of the motor 4 is a motor shaft 5, when the motor 4 works, the motor shaft 5 rotates, the motor shaft 5 is connected with the speed reducing assembly 6 to drive the speed reducing assembly 6 to move, the output shaft 7 is connected to the output end of the speed reducing assembly 6 and rotates along with the work of the speed reducing assembly 6, and the brake assembly 9 is used for braking to stop the motion of the steering engine module.

The steering engine module provided by the invention adopts the steering engine coding control structure in any embodiment, the steering engine coding control structure comprises a circuit board component 1, a first magnetic ring 2, a second magnetic ring 3, a first reading head chip 111 and a second reading head chip 112, the first reading head chip 111 and the second reading head chip 112 are both fixed and electrically connected to the control board 11 of the circuit board component 1, a circuit board for bearing the reading head chips is not required to be additionally arranged, and the first reading head chip 111 and the second reading head chip 112 are not required to be electrically connected to the control board 11 by using cables, so that the routing in the steering engine module is simpler, the installation is simpler, the cost is lower, and the volume of the steering engine module is not increased.

In one embodiment of the present invention, referring to fig. 6, the steering engine module further includes a first magnetic ring seat 21 and a second magnetic ring seat 31, the first magnetic ring seat 21 is fixed on the periphery of the motor shaft 5, the first magnetic ring 2 is fixed on the first magnetic ring seat 21, so that the first magnetic ring 2 can rotate along with the motor shaft 5, and the angular displacement of the first magnetic ring is the same as the angular displacement of the motor shaft 5, the second magnetic ring seat 31 is fixed on the periphery of the output shaft 7, and the second magnetic ring 3 is fixed on the second magnetic ring seat 31, so that the second magnetic ring 3 can rotate along with the output shaft 7, and the angular displacement of the output shaft 7 is the same as the angular. Thus, the angular displacement of the motor shaft 5 and the output shaft 7 can be obtained by detecting the angular displacement of the first magnetic ring 2 and the second magnetic ring 3.

Optionally, motor shaft 5 and output shaft 7 are coaxial to be set up, so can reduce the size of steering wheel module in radial direction, make the inner structure of steering wheel module compacter. Optionally, motor shaft 5 is hollow setting, and output shaft 7's periphery is located to motor shaft 5 cover for output shaft 7 does not additionally occupy radial space, reduces the volume of steering wheel module as far as possible.

Alternatively, one end of the output shaft 7 is disposed to extend out of the motor shaft 5, the second magnetic ring 3 is disposed to be fixed to the end of the output shaft 7 extending out of the motor shaft 5, and the first magnetic ring 2 is disposed to be fixed to one end of the motor shaft 5 such that the first magnetic ring 2 and the second magnetic ring 3 are close to each other, thereby enabling the first magnetic ring 2 to be disposed to face the first readhead chip 111, and the second magnetic ring 3 to be disposed to face the second readhead chip 112 (both the first readhead chip 111 and the second readhead chip 112 are disposed on the control board 11).

Optionally, one end of the output shaft 7 is a first end, the other end of the output shaft 7 is a second end, and the second magnetic ring 3 is fixed to the second end of the output shaft 7, that is, the circuit board assembly 1 is disposed at the second end of the output shaft 7. The circuit board assembly 1 may further include a heat dissipation plate 16, the control board 11, the driving board 12, and the heat dissipation plate 16 are sequentially disposed in parallel, and the control board 11 is disposed closer to the end of the motor shaft 5, so as to facilitate the layout of the first magnetic ring 2 and the second magnetic ring 3. The heat dissipation plate 16 can dissipate heat for the control board 11 and the driving board 12 quickly, so that the circuit board assembly 1 is prevented from being too high in temperature, and the service life of the circuit board assembly 1 is prolonged.

Optionally, the output shaft 7 is hollow, the wire passing hole is formed in the output shaft 7, and a cable of the steering engine module can pass through the wire passing hole, so that the cable can be hidden inside the steering engine module, external wiring from the steering engine module is not needed, therefore, when the steering engine module works, the cable cannot be dragged, the cable directly passes through the central shaft of the steering engine module, and the rotation of the steering engine module cannot influence the cable. In one embodiment, the first end of the output shaft 7 is connected with a flange, the center of the flange is hollowed, and a protective coil 8 is arranged at the hollowed center of the flange and used for protecting the cable and preventing the skin of the cable from being worn. The heat dissipation plate 16 is arranged at the second end of the output shaft 7, the center of the heat dissipation plate 16 is hollowed, and a protective coil 8 is arranged at the hollowed center of the heat dissipation plate 16 and used for protecting the cable and preventing the skin of the cable from being worn. Wherein, the heating panel 16 accessible spliced pole 13 and control panel 11 fixed connection, spliced pole 13 can be selected for metal posts such as copper post, makes the heat that control panel 11 and drive plate 12 produced can transmit to heating panel 16 fast, is diffused by heating panel 16.

In one embodiment of the present invention, referring to fig. 6, a first direction is from a first end of the output shaft 7 to a second end of the output shaft 7, and the speed reducing assembly 6, the motor 4, the brake assembly 9 and the circuit board assembly 1 are sequentially disposed along the first direction. Motor shaft 5 of motor 4 rotates, drives the work of speed reduction unit 6, and output shaft 7 connects in the output of speed reduction unit 6, and brake assembly 9 is used for braking motor shaft 5. More specifically, the speed reduction assembly 6, the motor 4 and the brake assembly 9 are provided on the outer periphery of the motor shaft 5, and the circuit board assembly 1 is provided on the outer periphery of the output shaft 7 (on the end of the output shaft 7 that protrudes out of the motor shaft 5).

Alternatively, the motor 4 includes a motor housing 41, a stator 42 and a rotor 43, the stator 42 is fixed inside the motor housing 41, the rotor 43 is fixed on the outer circumference of the motor shaft 5, a bearing is provided between the rotor 43 and the stator 42, and the rotor 43 and the motor shaft 5 rotate together when the motor 4 operates.

In one embodiment of the present invention, referring to fig. 6, the speed reduction assembly 6 is a harmonic speed reduction assembly, the harmonic speed reduction assembly includes a wave generator, a flexible bearing 61 and a harmonic meshing assembly 62, the harmonic meshing assembly 62 includes a flexible gear and a rigid gear, external teeth of the flexible gear and internal teeth of the rigid gear are meshed with each other, the flexible bearing 61 is supported between the wave generator and the flexible gear, and the moving end of the motor 4 is decelerated through intermittent meshing and separation between the flexible gear and the rigid gear. Optionally, the motor shaft 5 is the wave generator of the speed reduction assembly 6, so that the motor shaft 5 and the wave generator are the same component, the number of parts of the steering engine module can be reduced, the steering engine module is more compact, and in addition, the speed reduction assembly 6, the motor shaft 5 and the output shaft 7 form a modular assembly, so that mass production and assembly are facilitated. The wave generator may be a camshaft.

Optionally, referring to fig. 6, the brake assembly 9 includes a brake body 91 and a brake base 92, the brake base 92 is connected to the periphery of the motor shaft 5 through a bearing, the brake body 91 is fixed to the brake base 92, and when the steering engine module needs to be braked, the brake body 91 tightly holds the motor shaft 5, so that the motor shaft 5 stops rotating, and braking of the steering engine module is achieved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.