CN212381075U

CN212381075U - Novel potentiometer and high-precision micro steering engine with improved motor positioning

Info

Publication number: CN212381075U
Application number: CN202022049508.4U
Authority: CN
Inventors: 袁兴平
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-01-19
Anticipated expiration: 2030-09-18

Abstract

The utility model relates to a steering wheel field indicates a new potentiometre and improves miniature steering wheel of high accuracy of motor location especially. The utility model discloses the steering wheel makes the steering wheel miniaturized through innovative designs such as improving motor assembly, hall element, magnetite. The potentiometer for detection is formed by the linear motion of the magnets above the Hall element through the cam, the pulling magnet seat, the extension spring, the Hall element and the like, and has the advantages of longer service life, lower cost and simpler processing compared with the traditional potentiometer; the motor components are directly assembled on the shell, so that the cost and the space are saved, and the problem of difficulty in mounting and positioning the micro motor is solved; the motor brush piece and the Hall element are directly processed on the PCBA circuit board, so that the problems of difficulty and cost control of the traditional processing technology are solved; meanwhile, a clutch is added in the speed reducer to protect the gear from being damaged by instant impact; in addition, the current overload protection and the learning repeated positioning function are added in the software system.

Description

Novel potentiometer and high-precision micro steering engine with improved motor positioning

Technical Field

The utility model relates to a steering wheel field indicates a new potentiometre and improves miniature steering wheel of high accuracy of motor location especially.

Background

The traditional steering engine mainly comprises a shell, a circuit board, a driving motor, a reduction gear and a position detection element. The working principle is that the receiver sends a signal to the steering engine, the IC on the circuit board drives the coreless motor to start rotating, power is transmitted to the output shaft through the reduction gear, and meanwhile, the output shaft position detector sends back the signal to judge whether the positioning is achieved. The position detector is actually a variable resistor or a rotary magnetic encoder, the voltage value can be changed when the steering engine rotates, and the rotating angle can be known according to the detected voltage value.

At present, the steering engines popular in the market are quite rich in shape and variety, but main functional modules inside the steering engines are basically the same, the steering engine controller is an execution mechanism of the whole control system, a central controller, a data memory, a driving module and the like are arranged inside the steering engine controller, a main board of the central controller is a single chip microcomputer, and language programs can be written manually to complete directional control.

In order to improve the flight performance of the robot, the direct-current servo steering engines are used in a plurality of robot products, so that the action control effect of the robot is better, but in the existing partial direct-current servo steering engines, the motors of some steering engines are difficult to install and position, the machining process is difficult and the machining cost is high, and the steering engines have certain limitation in the use process. In addition, the potentiometer of the traditional steering engine has short service life, higher cost and complex processing technology.

Disclosure of Invention

In order to solve the problem, the utility model provides a miniature steering wheel of high accuracy of new potentiometre and improvement motor location adopts brand-new location detection mode, and motor element's installation location is simple, easily processing more and control cost.

In order to achieve the above object, the utility model adopts the following technical scheme: a high-precision micro steering engine with a new potentiometer and improved motor positioning comprises a shell, an output shaft, a motor part, a PCBA circuit board, a speed reducer and a position detection assembly, wherein the motor part, the PCBA circuit board, the speed reducer and the position detection assembly are arranged in the shell; the speed reducing device comprises a speed reducing gear set and a clutch provided with a gear, the speed reducing gear set is in driving connection with a rotating shaft of the motor part, the speed reducing gear set is meshed with the gear of the clutch, and the output shaft is meshed with the gear of the clutch through the gear; position detection subassembly includes the cam, stirs magnetite seat, hall element, the cam is fixed with the output shaft lower extreme, it is fixed with the cam to stir the magnetite seat, hall element direct processing is on the PCBA circuit board, it is equipped with the magnetite to stir on the magnetite seat, the output shaft drives through the cam when rotating and stirs the motion of magnetite seat for the magnetite realizes position detection in hall element top rectilinear direction motion.

Further, the poking magnet seat comprises a supporting block, a sliding block, a guide shaft and an expansion spring, the upper end of the sliding block is in contact with the lower end of the cam, the upper end of the supporting block is fixed with the inside of the shell, one end of the guide shaft is connected with the supporting block, the other end of the guide shaft is movably arranged in the sliding block, the expansion spring is sleeved on the surface of the guide shaft, one end of the expansion spring is elastically connected with the supporting block, the other end of the expansion spring is elastically connected with the sliding block, a clamping hole is formed in the lower end of the sliding.

Further, reduction gear set includes first gear, second gear, third gear, first gear cup joints in motor part pivot, second gear and first gear engagement, third gear and second gear engagement, the clutch surface is from last to being equipped with fourth gear, fifth gear, sixth gear and seventh gear down in proper order, first gear and third gear engagement, the output shaft surface is equipped with eighth gear, ninth gear and tenth gear in proper order, eighth gear, ninth gear and tenth gear mesh with fourth gear, fifth gear and sixth gear respectively.

And one side of the PCBA circuit board is also provided with a signal and power connector.

Further, the casing includes from last to including upper cover, well lid and lower cover down in proper order, the PCBA circuit board is fixed in the lower cover, motor element and position detection subassembly set up in the lid, decelerator and output shaft set up in the upper cover, well lid and lower cover are passed through in proper order from the lower cover through the double-screw bolt and are covered fixedly with the upper cover spiro union.

The upper cover is provided with an upper cover body, wherein extending parts are further arranged on two sides of the upper cover body, and mounting holes are formed in the surfaces of the extending parts.

Furthermore, a current overload protection function is arranged on the PCBA circuit board through a software system, and automatic power off is realized when current is overloaded.

Furthermore, a learning repeated positioning function is set on the PCBA circuit board through a software system, so that multiple times of positioning can be learned, data can be stored, and the next positioning is facilitated.

The beneficial effects of the utility model reside in that: the utility model discloses the miniature steering wheel of high accuracy makes the steering wheel miniaturized through innovative designs such as improving motor assembly, hall element, magnetite. The potentiometer for detection is formed by the linear motion of the magnets above the Hall element through the cam, the pulling magnet seat, the extension spring, the Hall element and the like, and has the advantages of longer service life, lower cost and simpler processing compared with the traditional potentiometer; the motor components are directly assembled on the shell, so that the cost and the space are saved, and the problem of difficulty in mounting and positioning the micro motor is solved; the motor brush piece and the Hall element are directly processed on the PCBA circuit board, so that the problems of difficulty and cost control of the traditional processing technology are solved; meanwhile, a clutch is added in the speed reducer to protect the gear from being damaged by instant impact; in addition, current overload protection is added in the software system to protect gears, motor parts and PCBA circuit boards from being damaged due to overload, and a learning repeated positioning function is added in the software system, so that the intelligent control system is more intelligent.

Drawings

Fig. 1 is an exploded view of the present embodiment.

Fig. 2 is a perspective view of the present embodiment.

Fig. 3 is an internal structural view of the present embodiment.

Fig. 4 is another internal structural view of the present embodiment.

Fig. 5 is a sectional view of the present embodiment.

The reference numbers illustrate: 1. a housing; 11. an upper cover; 111. an extension portion; 12. a middle cover; 13. a lower cover; 14. a stud; 2. an output shaft; 21. an eighth gear; 22. a ninth gear; 23. a tenth gear; 3. a motor component; 31. a motor brush piece; 32. a rotating shaft; 33. a magnet; 34. a coil; 35. a motor housing; 36. a commutator; PCBA circuit board; 41. a signal and power connector; 5. a reduction gear; 51. a reduction gear set; 511. a first gear; 512. a second gear; 513. a third gear; 52. a clutch; 521. a fourth gear; 522. a fifth gear; 523. a sixth gear; 524. a seventh gear; 6. a position detection component; 61. a cam; 62. shifting the magnet seat; 621. a magnet; 622. a support block; 623. a slider; 624. a guide shaft; 625. a tension spring; 63. a Hall element.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. The present application may be embodied in many different forms and is not limited to the embodiments described in the present embodiment. The following detailed description is provided to facilitate a more thorough understanding of the present disclosure, and the words used to indicate orientation, top, bottom, left, right, etc. are used solely to describe the illustrated structure in connection with the accompanying figures.

Referring to fig. 1-5, the utility model relates to a high-precision micro steering engine with a new potentiometer and improved motor positioning, which comprises a housing 1, an output shaft 2, a motor component 3, a PCBA circuit board 4, a speed reducer 5 and a position detection component 6, wherein the motor component 3 and the position detection component 6 are arranged in the housing 1, the motor component 3 and the position detection component 6 are respectively electrically connected with the PCBA circuit board 4, the speed reducer 5 is in driving connection with the motor component 3, a positioning column hole for accommodating the motor component 3 is arranged in the housing 1, the motor component 3 is directly arranged on the positioning column hole of the housing 1, and a motor brush piece 31 is directly processed on the PCBA circuit board 4; the speed reducing device 5 comprises a speed reducing gear set 51 and a clutch 52 provided with a gear, the speed reducing gear set 51 is in driving connection with the rotating shaft 32 of the motor part 3, the speed reducing gear set 51 is meshed with the gear of the clutch 52, and the output shaft 2 is meshed with the gear of the clutch 52 through the gear; position detection subassembly 6 includes cam 61, stirs magnetite seat 62, hall element 63, cam 61 is fixed with the 2 lower extremes of output shaft, it is fixed with cam 63 to stir magnetite seat 62, hall element 63 directly processes on PCBA circuit board 4, it is equipped with magnetite 621 on the magnetite seat 62 to stir, output shaft 2 drives through cam 61 when rotating and stirs the motion of magnetite seat 62 for magnetite 621 realizes the position detection at hall element 63 top rectilinear direction motion.

In this embodiment, the toggle magnet seat 62 includes a supporting block 622, a sliding block 623, a guiding shaft 624 and a telescopic spring 625, the upper end of the sliding block 623 contacts with a convex point at the lower end of the cam 61, the upper end of the supporting block 622 is fixed inside the housing 1, one end of the guiding shaft 624 is connected with the supporting block 622, the other end of the guiding shaft 624 is movably arranged inside the sliding block 623, the telescopic spring 625 is sleeved on the surface of the guiding shaft 624, one end of the telescopic spring is elastically connected with the supporting block 622, the other end of the telescopic spring is elastically connected with the sliding block 623, a clamping hole is formed in the lower end of the sliding block 623, the magnet 621 is fixedly inserted into the clamping hole, and the output shaft 2 pushes the toggle magnet seat 62 to elastically move in the left-right direction through the cam. In addition, a signal and power connector 41 is provided on the PCBA circuit board 4 side.

The speed reduction gear set 51 comprises a first gear 511, a second gear 512 and a third gear 513, wherein the first gear 511 is sleeved on the rotating shaft 32 of the motor part 3, the second gear 512 is meshed with the first gear 511, and the third gear 513 is meshed with the second gear 512, so that speed reduction is realized; the surface of the clutch 52 is sequentially provided with a fourth gear 521, a fifth gear 522, a sixth gear 523 and a seventh gear 524 from top to bottom, the seventh gear 524 is meshed with the third gear 513, the surface of the output shaft 2 is sequentially provided with an eighth gear 21, a ninth gear 22 and a tenth gear 23, the eighth gear 21, the ninth gear 22 and the tenth gear 23 are respectively meshed with the fourth gear 521, the fifth gear 522 and the sixth gear 523, and the stability of the output shaft 2 is maintained by meshing three groups of gears. It should be further noted that the second gear 512 and the third gear 513 of the present embodiment are dual gears respectively, and each of the dual gears includes a large gear and a small gear, while the sixth gear 523 and the seventh gear 524 are a small gear and a large gear of the dual gears, and the ninth gear 22 and the tenth gear 23 are a small gear and a large gear of the dual gears, wherein the first gear 511 is engaged with the large gear of the second gear 512, and the small gear of the second gear 512 is engaged with the large gear of the third gear 513.

In this embodiment, casing 1 includes from last to including upper cover 11, well lid 12 and lower cover 13 down in proper order, PCBA circuit board 4 is fixed in lower cover 13, motor element 3 and position detection subassembly 6 set up in the lid 12, decelerator 5 and output shaft 2 set up in upper cover 11, well lid 12 and lower cover 13 are fixed with upper cover 11 spiro union in proper order through well lid 12 from lower cover 13 through double-screw bolt 14. The two sides of the upper cover 11 are further provided with extending portions 111, and the surfaces of the extending portions 111 are provided with mounting holes.

In this embodiment, a current overload protection function is provided on the PCBA circuit board 4 through a software system, so that an automatic power off is realized when a current is overloaded. The PCBA circuit board 4 is provided with a repeated learning and positioning function through a software system, so that repeated positioning is learned, data is stored, and next positioning is facilitated.

Compared with the prior art, the utility model has the characteristics of it is following:

1. the magnet 621 moves linearly above the Hall element 63 through the cam 61, the pulling magnet seat 62, the extension spring 625 and the Hall element 63 to form a potentiometer for detection, a brand new position detection mode is formed by adopting 1

magnet

621 and 1 Hall element 63, and compared with the traditional potentiometer, the potentiometer has the advantages of long service life, low cost and simpler processing;

2. the motor component 3 is directly assembled on the shell 1, so that the cost and the space are saved, and the problem of difficulty in mounting and positioning the micro motor is solved;

3. the motor brush piece 31 and the Hall element 63 are directly processed on the PCBA circuit board 4, so that the problems of difficulty and cost control of the traditional processing technology are solved;

4. a clutch 52 is added in the speed reducing device 5 to protect the gear from being damaged by instant impact;

5. current overload protection is added in software to protect the reduction gear set 51, the motor component 3 and the PCBA circuit board 4 from being damaged due to overload;

6. the learning repeated positioning function is added in the software, so that the intelligent automatic positioning system is more intelligent and automatic;

7. the steering engine is miniaturized by improving the assembly of the motor 3 and the innovative design of the Hall element 63, the magnet 621 and the like;

it should be further noted that the cam 61 of the present embodiment is preferably an eccentric wheel, and in addition, the motor component 3 mentioned in the present embodiment is a conventional motor component 3 composed of the motor brush 31, the rotating shaft 32, the magnet 33, the coil 34, the motor housing 35 and the commutator 36, which will not be described in detail herein. Unless otherwise expressly stated or limited, the terms "connected," "fixed," "disposed," and the like are to be construed broadly and to include specific meanings of the terms in the context of the application as understood by one of ordinary skill in the art in view of the specific circumstances.

The above embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by the technical solution of the present invention by those skilled in the art are all within the scope of the present invention as defined by the claims.

Claims

1. The utility model provides a new potentiometre and improve miniature steering wheel of high accuracy of motor location, includes casing, output shaft and installs motor element, PCBA circuit board, decelerator and the position detection subassembly in the casing, motor element and position detection subassembly respectively with PCBA circuit board electric connection, decelerator and motor element drive are connected, its characterized in that:

a positioning column hole for accommodating a motor part is formed in the shell, the motor part is directly arranged on the positioning column hole of the shell, and the motor brush piece is directly processed on the PCBA circuit board;

the speed reducing device comprises a speed reducing gear set and a clutch provided with a gear, the speed reducing gear set is in driving connection with a rotating shaft of the motor part, the speed reducing gear set is meshed with the gear of the clutch, and the output shaft is meshed with the gear of the clutch through the gear;

position detection subassembly includes the cam, stirs magnetite seat, hall element, the cam is fixed with the output shaft lower extreme, it is fixed with the cam to stir the magnetite seat, hall element direct processing is on the PCBA circuit board, it is equipped with the magnetite to stir on the magnetite seat, the output shaft drives through the cam when rotating and stirs the motion of magnetite seat for the magnetite realizes position detection in hall element top rectilinear direction motion.

2. The novel potentiometer and the improved motor positioning high-precision micro steering engine according to claim 1 are characterized in that: the poking magnet seat comprises a supporting block, a sliding block, a guide shaft and an expansion spring, the upper end of the sliding block is in contact with the lower end of the cam, the upper end of the supporting block is fixed with the inside of the shell, one end of the guide shaft is connected with the supporting block, the other end of the guide shaft is movably arranged in the sliding block, the expansion spring is sleeved on the surface of the guide shaft, one end of the expansion spring is elastically connected with the supporting block, the other end of the expansion spring is elastically connected with the sliding block, a clamping hole is formed in the lower end of.

3. The novel potentiometer and the improved motor positioning high-precision micro steering engine according to claim 1 are characterized in that: the reduction gear set comprises a first gear, a second gear and a third gear, the first gear is sleeved on a rotating shaft of the motor part, the second gear is meshed with the first gear, the third gear is meshed with the second gear, the clutch surface is sequentially provided with a fourth gear, a fifth gear, a sixth gear and a seventh gear from top to bottom, the first gear is meshed with the third gear, the output shaft surface is sequentially provided with an eighth gear, a ninth gear and a tenth gear, and the eighth gear, the ninth gear and the tenth gear are respectively meshed with the fourth gear, the fifth gear and the sixth gear.

4. The novel potentiometer and the improved motor positioning high-precision micro steering engine according to claim 1 are characterized in that: and a signal and power connector is also arranged on one side of the PCBA circuit board.

5. The novel potentiometer and the improved motor positioning high-precision micro steering engine according to claim 1 are characterized in that: the casing includes from last to including upper cover, well lid and lower cover down in proper order, the PCBA circuit board is fixed in the lower cover, in motor part and the setting of position detection subassembly in the lid, decelerator and output shaft set up in the upper cover, well lid and lower cover are through the double-screw bolt from the lower cover in proper order run through the lid fixed with the upper cover spiro union.

6. The novel potentiometer and the improved motor positioning high-precision micro steering engine according to claim 5 are characterized in that: extension parts are further arranged on two sides of the upper cover, and mounting holes are formed in the surfaces of the extension parts.

7. The novel potentiometer and the improved motor positioning high-precision micro steering engine according to claim 1 are characterized in that: the PCBA circuit board is provided with a current overload protection function through a software system, and automatic power off is realized when current is overloaded.

8. The novel potentiometer and the improved motor positioning high-precision micro steering engine according to claim 1 are characterized in that: the PCBA circuit board is provided with a learning repeated positioning function through a software system, so that repeated positioning is learned, data is stored, and the next positioning is facilitated.