WO2016015495A1

WO2016015495A1 - Hall element sealing structure and motor using same

Info

Publication number: WO2016015495A1
Application number: PCT/CN2015/077454
Authority: WO
Inventors: 于跃强; 王雄程; 边文清
Original assignee: 中山大洋电机股份有限公司
Priority date: 2014-07-30
Filing date: 2015-04-24
Publication date: 2016-02-04
Also published as: CA2934590A1; CN204030868U; CA2934590C; MX2016007011A

Abstract

A hall element sealing structure and a motor using same. The hall element sealing structure comprises a box (1), a hall circuit board (2), and a hall element (3) installed on the hall circuit board. A cavity (10) is formed in the middle of the box (1). A supporting boss (11) is disposed on the bottom wall of the cavity (10), and the bottom wall of the cavity (10) is recessed to form an installing groove (12). The hall circuit board (2) is supported on the top surface of the supporting boss (11), and the hall element (3) on the hall circuit board (2) extends into the installing groove (12). A sealant (4) is poured into the cavity (10). The sealant (4) seals the hall element (3) in the installing groove (12) and covers the outside of the hall circuit board (2). The sealing structure is simple in structure, convenient to install, and firm, has good sealing and waterproof performance and can work reliably.

Description

Hall element sealing structure and motor for application thereof

Technical field:

The utility model relates to a Hall element sealing structure and an electric motor thereof.

Background technique:

Among the existing motors, the Hall circuit board is generally mounted directly on the end insulation of the stator assembly, and the Hall element protrudes downward from the Hall circuit board and detects the position signal of the rotor outside the rotor assembly, but this The Hall element mounting structure is very unreliable, and the Hall board and the Hall element are easily released from the end insulation in the case of motor operation or external environmental vibration. At the same time, due to the long-term exposure of the Hall circuit board and the Hall element, the Hall circuit board and the Hall element are easily affected by dust and water, causing the Hall circuit board or the Hall element to fail, seriously affecting the normal operation of the motor, and replacing the parts. High cost and reduced market competitiveness.

Summary of the invention:

The purpose of the utility model is to provide a Hall element sealing structure and a motor for the same, the structure is simple, the installation is convenient and firm, and the sealing and waterproof performance of the Hall circuit board and the Hall element are good, and the work is reliable, the motor The structure is simple, the installation is convenient, the sealing and waterproof performance of the Hall circuit board and the Hall element are good, the work is reliable, and the market competitiveness is large.

The object of the present invention is achieved by the following technical solutions.

A Hall element sealing structure comprises a box body, a Hall circuit board and a Hall element mounted on the Hall circuit board, and a cavity is opened in the middle of the box body, characterized in that: the bottom wall of the cavity is arranged Supporting the boss, and forming a mounting groove in the bottom wall of the cavity, the Hall circuit board is supported on the top surface of the supporting boss, and the Hall element on the Hall circuit board extends into the mounting slot, in the empty The cavity is filled with a sealant, and the sealant seals the Hall element inside the mounting groove and the sealant covers the Hall circuit board.

The bottom wall of the cavity described above protrudes upwardly from a plurality of columns, and the column is nested inside the through hole of the Hall circuit board.

The outer wall of the box body described above is provided with a plurality of mounting feet, and the mounting feet are provided with mounting holes.

A motor comprising a rotating shaft, a rotor assembly, a stator assembly, a housing assembly, a housing, and a Hall line a plate and a Hall element, the rotor assembly is mounted on a rotating shaft, and the stator assembly and the outer casing assembly are mounted together and nested outside the rotor assembly, wherein the stator assembly includes a stator core, an end insulation and a coil winding, and the end insulation is mounted on the stator The end of the iron core, the coil winding is wound on the end insulation, the box body is mounted on the end insulation, and a cavity is opened in the middle of the box body, wherein the bottom wall of the cavity is provided with a support boss. And the bottom wall of the cavity is recessed to form a mounting groove, the Hall circuit board is supported on the top surface of the supporting boss, and the Hall element on the Hall circuit board extends into the mounting groove, and the cavity is filled with the sealing glue The sealant seals the Hall element inside the mounting slot and the sealant covers the Hall board.

The outer wall of the casing described above is provided with three mounting legs, and the end insulation comprises an annular yoke portion and a plurality of tooth portions projecting inward from the annular yoke portion, and a wire groove is formed between the adjacent two tooth portions. A left support post and a right support post are respectively protruded upward from the inner surface of one of the welt grooves and the top surfaces of the adjacent two tooth portions, and the first support post protrudes upward from the top surface of the loop groove and the annular yoke portion The casing is mounted on the top surfaces of the first support column, the left support column and the right support column by three mounting feet.

The bottom wall of the cavity described above is recessed to form a mounting groove and a convex portion is formed on the bottom surface of the box body, and a left base is arranged on the top surface of the left support column and the top surface of the tooth portion, and at the bottom of the right support column, A right base is disposed on a top surface of the tooth portion, and a card slot is formed between the left base and the right base. The boss is nested inside the card slot and supported on the top surface of the tooth portion, and the Hall element is nested in the mounting slot. Inside and rest on the outside of the rotor assembly.

Compared with the prior art, the utility model has the following effects:

1) a support boss is arranged on the bottom wall of the cavity, and a mounting groove is formed in the bottom wall of the cavity, the Hall circuit board is supported on the top surface of the support boss, and the Hall on the Hall circuit board The component protrudes into the mounting groove, and the cavity is filled with a sealant. The sealant seals the Hall element inside the mounting groove and the sealant covers the outside of the Hall circuit board. The structure is simple, the installation is convenient and firm, Hall The circuit board and the Hall element are sealed, effectively improving the sealing and waterproof performance, avoiding damage caused by impurities, and ensuring reliable operation of the Hall circuit board and the Hall element;

2) A plurality of columns are protruded upward from the bottom wall of the cavity, and the column is nested in the through hole of the Hall circuit board Surface, simple structure, convenient positioning and high assembly efficiency;

3) The outer wall of the box body is provided with a plurality of mounting feet, and the mounting feet are provided with mounting holes for conveniently mounting the box body to the stator assembly;

4) The motor has a simple structure and convenient installation, and the sealing and waterproof performance of the Hall circuit board and the Hall element are good, the work is reliable, and the market competitiveness is large;

5) The box body is mounted on the top surfaces of the first support column, the left support column and the right support column by three mounting feet, and has a simple structure, convenient installation and firmness;

6) The bosses are nested inside the card slot and supported on the top surface of the tooth portion. The Hall element is nested inside the mounting groove and rests on the outside of the rotor assembly. The structure is simple, the installation is convenient and firm, and the Hall is effectively guaranteed. The reliability of component operation.

BRIEF DESCRIPTION OF THE DRAWINGS:

Figure 1 is a perspective view of the sealing structure of the Hall element of the present invention;

2 is an exploded view of the sealing structure of the Hall element of the present invention;

Figure 3 is a plan view of the sealing structure of the Hall element of the present invention;

Figure 4 is a cross-sectional view taken along line A-A of Figure 3;

Figure 5 is a perspective view of the motor of the present invention;

Figure 6 is an exploded view of the motor of the present invention;

Figure 7 is a partial enlarged view of B-B of Figure 6;

Figure 8 is a plan view of the motor of the present invention;

Figure 9 is a cross-sectional view taken along line C-C of Figure 8;

Figure 10 is a partial enlarged view of D-D of Figure 9.

detailed description:

The present invention will be further described in detail below through the specific embodiments and the accompanying drawings.

Embodiment 1: As shown in FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , the utility model relates to a Hall element sealing structure, which comprises a box body 1 , a Hall circuit board 2 and a Hall circuit board 2 . The Hall element 3 is provided with a cavity 10 in the middle of the casing 1, and a support boss 11 is arranged on the bottom wall of the cavity 10, and is empty The bottom wall of the cavity 10 is recessed to form a mounting groove 12, and the Hall circuit board 2 is supported on the top surface of the support boss 11, and the Hall element 3 on the Hall circuit board 2 extends into the mounting groove 12 in the cavity. The inside of the 10 is filled with a sealant 4 which seals the Hall element 3 inside the mounting groove 12 and the sealant 4 covers the outside of the Hall wiring board 2.

A plurality of uprights 13 projecting upwardly from the bottom wall of the cavity 10 are embedded in the through holes 21 in the Hall wiring board 2. A plurality of mounting legs 14 are disposed on the outer wall of the casing 1, and mounting holes 140 are formed in the mounting legs 14.

Embodiment 2: As shown in FIG. 5 to FIG. 10, the present invention is a motor including a rotating shaft 5, a rotor assembly 6, a stator assembly 7, a housing assembly 8, a casing 1, a Hall circuit board 2, and a Hall element. 3. The outer casing assembly 8 includes a casing 81 and an end cover 82. The rotor assembly 6 is mounted on a rotating shaft 5, and the stator assembly 7 and the casing 81 are mounted together and nested outside the rotor assembly 6, and the end cover 82 is mounted on Both ends of the casing 81 are supported on the bearings of the end cover 82. The stator assembly 7 includes a stator core 71, an end insulation 72 and a coil winding 73. The end insulation 72 is mounted at the end of the stator core 71. The coil winding 73 is wound around the end insulation 72, and the casing 1 is mounted on the end insulation 72, a cavity 10 is opened in the middle of the casing 1, and a support boss 11 is provided on the bottom wall of the cavity 10, and A mounting groove 12 is formed in the bottom wall of the cavity 10, and the Hall circuit board 2 is supported on the top surface of the support boss 11, and the Hall element 3 on the Hall circuit board 2 extends into the mounting groove 12, The cavity 10 is filled with a sealant 4, and the sealant 4 seals the Hall element 3 inside the mounting groove 12 and the sealant 4 covers the Hall. 2 outside of the circuit board. Three mounting legs 14 are provided on the outer wall of the casing 1. The end insulation 72 includes an annular yoke portion 721 and a plurality of tooth portions 722 extending inwardly from the annular yoke portion 721. The wire groove 723 extends upward on the top surface of one of the wire grooves 723 and the top surface of the adjacent two tooth portions 722, respectively, to the left support column 7221 and the right support column 7222, the outer side of the wire groove 723, and the annular yoke portion 721. The first support post 7211 protrudes upward from the top surface, and the casing 1 is supported by the three mounting legs 14 on the top surfaces of the first support post 7211, the left support post 7221 and the right support post 7222. The bottom wall of the cavity 10 is recessed to form a mounting groove 12 and a convex portion 15 is formed on the bottom surface of the casing 1. On the bottom of the left supporting column 7221, the top surface of the tooth portion 722 is provided with a left base 7223, which is supported on the right side. The bottom of the column 7222, the top of the tooth 722 A right base 7224 is disposed on the surface, and a latching groove 7225 is formed between the left base 7223 and the right base 7224. The boss 15 is nested and mounted on the top surface of the toothed portion 722 and supported on the top surface of the tooth portion 722. It fits inside the mounting groove 12 and rests on the outside of the rotor assembly 6. A plurality of uprights 13 projecting upwardly from the bottom wall of the cavity 10 are embedded in the through holes 21 in the Hall wiring board 2.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and scope of the present invention are equivalent. The manner of replacement is included in the scope of protection of the present invention.

Claims

A Hall element sealing structure comprising a box body (1), a Hall circuit board (2) and a Hall element (3) mounted on the Hall circuit board (2), which is opened in the middle of the box body (1) a cavity (10), characterized in that a support boss (11) is arranged on the bottom wall of the cavity (10), and a mounting groove (12) is recessed in the bottom wall of the cavity (10), Hall The circuit board (2) is supported on the top surface of the support boss (11), and the Hall element (3) on the Hall circuit board (2) projects into the mounting groove (12) inside the cavity (10) The sealant (4) is filled, and the sealant (4) seals the Hall element (3) inside the mounting groove (12) and the sealant (4) covers the Hall circuit board (2).
A Hall element sealing structure according to claim 1, characterized in that a plurality of uprights (13) project upwardly on the bottom wall of the cavity (10), and the column (13) is nested in the Hall circuit board. (2) Inside the through hole (21).
A Hall element sealing structure according to claim 1 or 2, characterized in that: a plurality of mounting legs (14) are arranged on the outer wall of the casing (1), and mounting holes (140) are formed in the mounting legs (14). ).
A motor comprising a rotating shaft (5), a rotor assembly (6), a stator assembly (7), a housing assembly (8), a casing (1), a Hall wiring board (2) and a Hall element (3), a rotor The assembly (6) is mounted on a rotating shaft (5), and the stator assembly (7) and the outer casing assembly (8) are mounted together and nested outside the rotor assembly (6), wherein the stator assembly (7) includes a stator core (71) End insulation (72) and coil winding (73), end insulation (72) is mounted at the end of the stator core (71), coil winding (73) is wound around the end insulation (72), and the casing ( 1) mounted on the end insulation (72), in the middle of the box (1) is provided with a cavity (10), characterized in that: a support boss (11) is arranged on the bottom wall of the cavity (10), And a mounting groove (12) is formed in the bottom wall of the cavity (10), the Hall circuit board (2) is supported on the top surface of the supporting boss (11), and the Hall on the Hall circuit board (2) The component (3) projects into the mounting groove (12), and the cavity (10) is filled with a sealant (4), and the sealant (4) seals the Hall element (3) inside the mounting groove (12) and The sealant (4) is overlaid on the outside of the Hall circuit board (2).
A motor according to claim 4, wherein three outer mounting walls (14) are provided on the outer wall of the casing (1), and the end insulation (72) includes an annular yoke (721) and a circular yoke. Department (721) a plurality of teeth (722) projecting inward, and a wire groove (723) is formed between the adjacent two tooth portions (722), and inside the one of the wire grooves (723), two adjacent teeth (722) The left support column (7221) and the right support column (7222) are respectively protruded upward, and the first support column protrudes upward from the top surface of the groove (723) and the top surface of the annular yoke (721) (7211), the casing (1) is supported by the three mounting feet (14) on the top surfaces of the first support column (7211), the left support column (7221), and the right support column (7222).
A motor according to claim 5, wherein the bottom wall of the cavity (10) is recessed to form a mounting groove (12) and a projection (15) is formed on the bottom surface of the casing (1). A left base (7223) is disposed on a top surface of the left support column (7221) and a top surface of the tooth portion (722), and a right base (7224) is disposed on a top surface of the right support column (7222) and a top surface of the tooth portion (722). A card slot (7225) is formed between the left base (7223) and the right base (7224), and the bosses (15) are nested and mounted in the card slot (7225) and supported on the top surface of the tooth portion (722). The Hall element (3) is nested inside the mounting groove (12) and rests outside the rotor assembly (6).
A motor according to claim 4 or 5 or 6, wherein a plurality of uprights (13) project upwardly from the bottom wall of the cavity (10), and the uprights (13) are nested in the Hall circuit board. (2) Inside the through hole (21).