CN212343602U

CN212343602U - Brushless DC motor debugging-free compact Hall position sensor

Info

Publication number: CN212343602U
Application number: CN202020462251.2U
Authority: CN
Inventors: 胡建辉; 赵猛; 严东华
Original assignee: Jiangsu Nan Sheng Electronic Polytron Technologies Inc
Current assignee: Jiangsu Nan Sheng Electronic Polytron Technologies Inc
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2021-01-12
Anticipated expiration: 2030-04-01

Abstract

The utility model discloses a brushless DC motor exempts from to debug compact hall position sensor, which comprises a housing, the side of casing is equipped with the end cover, the side bottom of end cover is equipped with the bearing, the side of bearing is equipped with the pivot, the side of pivot is equipped with the magnet steel, the another side of casing is equipped with stator core, stator core's side is equipped with the winding, the inner wall of casing is equipped with the shop bolt, the right side of shop bolt is equipped with hall circuit board, hall circuit board's side is equipped with hall element. The brushless direct current motor debugging-free compact Hall position sensor forms a Hall position sensor of a three-phase brushless direct current motor, meets the decoding logic of the brushless direct current motor, and is simple and convenient to install, high in positioning precision and compact in structure.

Description

Brushless DC motor debugging-free compact Hall position sensor

Technical Field

The utility model relates to the field of electronic technology, specifically be a brushless DC motor exempts from to debug compact hall position sensor.

Background

Brushless dc motors are increasingly used with their excellent performance, and electronic commutation overcomes many disadvantages associated with brush commutation. Hall position sensors in brushless dc motor electronic commutation devices have gained popularity in some important fields due to their advantages of small size, light weight, high reliability, etc. However, in the process of mounting the hall position sensor, due to the sensitivity of the hall element to the magnetic field and the characteristics of the hall element, the hall position sensor needs to be repositioned in the process of mounting so as to ensure the accuracy of electronic commutation. At present, a Hall position sensor is mostly arranged on a motor shell, and is adjusted and positioned through a waist-shaped hole, so that the positioning period is long, and the positioning precision is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a brushless DC motor exempts from to debug compact hall position sensor, especially this hall position sensor have exempt from to debug and compact's characteristics, have solved brushless DC motor hall position sensor problem of relocating in the installation and debugging process betterly, have accelerated integrated brushless DC motor's development speed.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a brushless DC motor debugging-free compact hall position sensor, includes the casing, the side of casing is equipped with the end cover, the side bottom of end cover is equipped with the bearing, the side of bearing is equipped with the pivot, the side of pivot is equipped with the magnet steel, the another side of casing is equipped with stator core, stator core's side is equipped with the winding, the inner wall of casing is equipped with the locating pin, the right side of locating pin is equipped with hall circuit board, hall circuit board's side is equipped with hall element.

Preferably, a hall element corresponding part is arranged on the outer wall of the stator core and corresponds to the hall element.

Preferably, the locating pin is located between the stator core and the hall circuit board.

Preferably, the hall element is located on the right side of the winding.

Preferably, the positioning grooves are formed in the positions of the excircle of the Hall circuit board and the center line symmetry line of the Hall element.

Preferably, three hall elements with a difference of 120 electrical angles are distributed on the hall circuit board.

Compared with the prior art, the beneficial effects of the utility model are that: the brushless direct current motor debugging-free compact Hall position sensor has the advantages that the interval between the output position signal H1 and the time phase of the counter electromotive force E1 of the upper winding of the aligning tooth is 90 degrees (electrical angle), the output position signal H of the Hall element lags behind the counter electromotive force E2 in the right time phase by 120 degrees (electrical angle) because the three-phase winding has 120 degrees (electrical angle) in the time phase and the other counter electromotive force E2 has 120 degrees (electrical angle) in advance of the E1, the H1 is used as a commutation input signal of E2, 2 Hall elements are arranged according to the same method, the Hall position sensor of the three-phase brushless direct current motor is formed, the decoding logic of the brushless direct current motor is met, the brushless direct current motor debugging-free compact Hall position sensor is simple and convenient to install, high in.

Drawings

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

fig. 2 is a schematic structural view of the stator core of the present invention;

fig. 3 is a schematic diagram of the principle structure of the present invention.

In the figure: 1. hall element, 2, end cover, 3, casing, 4, Hall circuit board, 5, winding, 6, locating pin, 7, stator core, 8, bearing, 9, pivot, 10, magnet steel, 11, Hall element corresponding part.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a brushless DC motor debugging-free compact Hall position sensor comprises a housing 3, wherein an end cover 2 is assembled on the side surface of the housing 3, a bearing 8 is assembled at the bottom end of the side surface of the end cover 2, a rotating shaft 9 is assembled on the side surface of the bearing 8, magnetic steel 10 is assembled on the side surface of the rotating shaft 9, a stator core 7 is assembled on the other side surface of the housing 3, a Hall element corresponding part 11 is arranged on the outer wall of the stator core 7 and corresponds to a Hall element 1, a winding 5 is assembled on the side surface of the stator core 7, a positioning pin 6 is assembled on the inner wall of the housing 3, the positioning pin 6 is adopted to ensure that the center of the Hall element is aligned with the center symmetrical line of a stator tooth, a Hall circuit board 4 is assembled on the right side of the positioning pin 6, the positioning pin 6 is positioned between the stator core 7 and the Hall circuit, the Hall element 1 is positioned on the right side of the winding 5, positioning grooves are formed in the positions of the excircle of the Hall circuit board 4 and the center line symmetry line of the Hall element 1, three Hall elements 1 with the difference of 120 electrical angles are distributed on the Hall circuit board 4, and the Hall elements 1 are surface-mounted Hall elements.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of description and simplicity of 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; also, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," "assembled," and the like are to be construed broadly and can include, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a brushless DC motor exempts from to debug compact hall position sensor which characterized in that: including casing (3), the side of casing (3) is equipped with end cover (2), the side bottom of end cover (2) is equipped with bearing (8), the side of bearing (8) is equipped with pivot (9), the side of pivot (9) is equipped with magnet steel (10), the another side of casing (3) is equipped with stator core (7), the side of stator core (7) is equipped with stator winding (5), the inner wall of casing (3) is equipped with locating pin (6), the right side of locating pin (6) is equipped with hall circuit board (4), the side of hall circuit board (4) is equipped with hall element (1).

2. The brushless direct current motor debugging-free compact hall position sensor according to claim 1, wherein: and a Hall element corresponding part (11) is arranged on the outer wall of the stator core (7) and corresponds to the Hall element (1).

3. The brushless direct current motor debugging-free compact hall position sensor according to claim 1, wherein: and the positioning pin (6) is positioned between the stator core (7) and the Hall circuit board (4).

4. The brushless direct current motor debugging-free compact hall position sensor according to claim 1, wherein: the Hall element (1) is positioned on the right side of the winding (5).

5. The brushless direct current motor debugging-free compact hall position sensor according to claim 1, wherein: and positioning grooves are formed in the excircle of the Hall circuit board (4) and the center line symmetry line of the Hall element (1).

6. The brushless direct current motor debugging-free compact hall position sensor according to claim 1, wherein: three Hall elements (1) with a difference of 120 electrical angles are distributed on the Hall circuit board (4).