CN209991997U

CN209991997U - Hall sensor module

Info

Publication number: CN209991997U
Application number: CN201821807811.2U
Authority: CN
Inventors: 张泽喜; 杜保珠; 赵荣林
Original assignee: ZHENJIANG SURUN ELECTRONIC TECHNOLOGY CO LTD
Current assignee: ZHENJIANG SURUN ELECTRONIC TECHNOLOGY CO LTD
Priority date: 2018-11-05
Filing date: 2018-11-05
Publication date: 2020-01-24
Anticipated expiration: 2028-11-05

Abstract

The utility model discloses a hall sensor module, including box body, three-phase conducting strip, circuit board, two hall sensor and a 4 foot connector, the box body includes that trilateral frame and the middle web that closes that enclose, and middle web falls into first, second side frame with the box body. And three-phase conducting strip grooves are formed in one side of the arc-shaped frame of the first side frame, and the three-phase conducting strips are respectively embedded into the corresponding three-phase conducting strip grooves. A closed cavity is formed in one corner of the second side frame at an interval, two Hall sensor accommodating grooves are formed in the bottom of the closed cavity, Hall sensors are placed in the Hall sensor accommodating grooves respectively, pins of the Hall sensors are connected with a circuit board in a soldering mode, and four output ends of the circuit board are sealed in the closed cavity through silica gel after being connected with a 4-pin connector. The utility model discloses a modular structure makes the production work efficiency than original 1/4 of having improved to have dustproof, antidetonation and anti-oxidation effect, improved the utility model discloses a life.

Description

Hall sensor module

Technical Field

The utility model relates to a hall sensor, especially a tacho sensor module for detecting washing machine brushless motor signal belongs to domestic appliance technical field.

Background

The single-phase alternating current input by the washing machine can be input to the brushless motor to drive the brushless motor to rotate after being rectified and inverted into three-phase alternating current. In the driving control of a brushless motor of a washing machine, a hall sensor is commonly used to provide a controller with a commutation point signal required for electronic commutation. According to the output signal of the Hall sensor, the corresponding phase sequence of the washing machine is electrified, and the motor can be controlled to rotate. The control mode is easy to realize, and the performance is relatively stable in practical application. The hall sensor is fixed on a certain part of the circumference of the stator coil of the brushless motor of the washing machine according to a certain distance, and the installation position of the hall sensor is related to the distribution position of the three-phase winding of the motor. The three-phase electrode W, U, V of the existing motor is supplied with power through a separate power supply line, so that the Hall sensor module is separated from the three-phase power supply line of the motor, the contact reliability is reduced, and the manufacturing cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, providing a hall sensor module, solving the problem of washing machine brushless motor three-phase connection and hall sensor module separation.

The utility model discloses a following technical scheme realizes:

a Hall sensor module comprises a box body, a three-phase conducting strip, a circuit board, two Hall sensors and a 4-pin connector, wherein the box body is fan-shaped and comprises a frame with three enclosed sides and a middle web plate perpendicular to the longitudinal center line of the frame, and the middle web plate divides the two transverse sides of the box body into a first side frame and a second side frame; three-phase conducting strip grooves which are arranged in a ray shape are arranged on one side of an arc-shaped frame, matched with the shell of the brushless motor of the washing machine, of the first side frame, and the three-phase conducting strips of W, U, V three-phase electrodes are respectively embedded into the corresponding three-phase conducting strip grooves; a closed cavity is formed in one corner, deviating from the arc-shaped frame, of the second side frame, two Hall sensor accommodating grooves which are vertically downward are formed in the bottom of the closed cavity, downward pins of the head of a Hall sensor are placed into the Hall sensor accommodating grooves upwards, the Hall sensor accommodating grooves are sealed by a circuit board embedded into the bottom of the closed cavity, the pins of the Hall sensor are connected with the circuit board in a tin soldering mode, and four paths of output ends of the circuit board are sealed in the closed cavity through silica gel after being connected with a 4-pin connector.

The purpose of the utility model can be further realized through the following technical measures:

furthermore, the three-phase conducting strip is an injection molding insert which is plastically packaged in engineering plastics, and the injection molding insert is embedded into the three-phase conducting strip groove on the first side.

Furthermore, two self-tapping screw locating rings used for fixing the Hall sensor module on an outer mounting plate of the washing machine brushless motor shell are arranged on one side of the arc-shaped frame of the first side frame.

Furthermore, one side of the first side frame, which is far away from the arc-shaped frame, is not provided with a frame, 7 output ports connected with the motor controller are arranged at the outer edge of the middle web plate without the frame at intervals, and the output ports are divided into two groups and are concentrated at two ends of the outer edge of the middle web plate; three-phase power output ports of 3, 2 and 1 are arranged at one end of the outer side of the closed cavity, and four output ports of 7, 6, 5 and 4 are arranged at the other end of the outer side of the closed cavity.

Furthermore, the box body is made of engineering plastics.

The utility model discloses in passing through the inserts of moulding plastics that conducting strip form plastic envelope was made with the three phase machine wiring, in the three-phase conducting strip groove of arc frame one side of the first side frame of inserts box body of will moulding plastics again, simple structure and improved greatly the utility model discloses a reliability and stability. The modularized structure makes the production efficiency improve 1/4 than original, and operating personnel reduces to 2 people, thereby has reduced the utility model discloses a manufacturing cost. The circuit board passes through the silica gel encapsulation in the hall sensor storage tank, has dustproof, antidetonation and anti-oxidation effect, has improved the utility model discloses a life.

The advantages and features of the invention will be illustrated and explained by the following non-restrictive description of preferred embodiments, which are given by way of example only with reference to the accompanying drawings.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a view in the direction A of FIG. 1;

FIG. 3 is a view from the direction B of FIG. 1;

FIG. 4 is a top view of FIG. 2;

fig. 5 is an enlarged sectional view of C-C of fig. 2.

Detailed Description

The present invention will be further explained with reference to the drawings and examples

As shown in fig. 1 to 5, the present embodiment includes a box body 1, a three-phase conductive sheet 2, a circuit board 3, two hall sensors 4 and a 4-pin connector 5, the box body 1 made of engineering plastics is fan-shaped, and includes a frame 11 enclosed by three sides and a middle web 12 perpendicular to the longitudinal center line of the frame 11, and the middle web divides the two lateral sides of the box body 12 into a first side frame 10 and a second side frame 20. Three-phase conducting strip grooves 112 which are arranged in a radial shape are formed in one side of an arc-shaped frame 111, matched with the shell of the brushless motor of the washing machine, of the first side frame 10, the three-phase conducting strip 2 of the W, U, V three-phase electrode is in plastic package in the injection molding insert 7, and the injection molding insert 7 is embedded into the first side three-phase conducting strip grooves 112, so that the reliability and the stability of the Hall sensor module are improved.

Arc frame 111 one side of first side frame is equipped with two self-tapping screw position circle 101 that are used for fixing hall sensor module on washing machine brushless motor casing mounting panel, is convenient for will through self-tapping screw the utility model discloses fix on the mounting panel. A closed cavity 113 is formed in one corner of the second side frame 20, which is far away from the arc-shaped frame 111, two vertically downward hall sensor accommodating grooves 114 are formed in the bottom of the closed cavity 113, pins 42 of the hall sensor 4 are upwards closed in the hall sensor accommodating grooves 114, the hall sensor accommodating grooves 114 are closed by the circuit board 3 embedded in the bottom of the closed cavity 113, the pins 42 of the hall sensor 4 are connected with the circuit board 3 in a soldering mode, the head portion 41 of the hall sensor 4 is downwards closed by the circuit board 3 embedded in the bottom of the closed cavity 113, and the four-way output end of the circuit board 3 is closed in the closed cavity 113 through the silica gel 6 after being connected with the 4-pin connector 5.

One side of the first side frame 10, which is far away from the arc-shaped frame 111, is not provided with a frame, 7 output ports connected with a motor controller are arranged at the outer edge of the middle web plate 12 without the frame at intervals, and the output ports are divided into two groups and are concentrated at two ends of the outer edge of the middle web plate 12. As shown in fig. 4, a third three-phase power output port, a second three-phase power output port, and a three-phase power output port of the first three-phase power output port are arranged at one end of the outer side of the closed cavity 113, and four output ports of a seventh output port, a sixth output port, a fifth output port, and a fourth output port are arranged at the other end of the outer side of the closed cavity, and the seven output ports are connected to corresponding input terminals of the motor controller through respective wires.

In addition to the above embodiments, the present invention can also have other embodiments, all adopt with the technical solution that the equivalent replacement or equivalent transformation of the present invention formed, all be in the protection scope of the present invention.

Claims

1. The Hall sensor module is characterized by comprising a box body, three-phase conducting strips, a circuit board, two Hall sensors and a 4-pin connector, wherein the box body is fan-shaped and comprises a frame with three sides enclosed and a middle web plate perpendicular to the longitudinal center line of the frame, and the middle web plate divides the two transverse sides of the box body into a first side frame and a second side frame; three-phase conducting strip grooves which are arranged in a ray shape are arranged on one side of an arc-shaped frame, matched with the shell of the brushless motor of the washing machine, of the first side frame, and the three-phase conducting strips of W, U, V three-phase electrodes are respectively embedded into the corresponding three-phase conducting strip grooves; a closed cavity is formed in one corner, deviating from the arc-shaped frame, of the second side frame, two Hall sensor accommodating grooves which are vertically downward are formed in the bottom of the closed cavity, downward pins of the head of a Hall sensor are placed into the Hall sensor accommodating grooves upwards, the Hall sensor accommodating grooves are sealed by a circuit board embedded into the bottom of the closed cavity, the pins of the Hall sensor are connected with the circuit board in a tin soldering mode, and four paths of output ends of the circuit board are sealed in the closed cavity through silica gel after being connected with a 4-pin connector.

2. The hall sensor module of claim 1 wherein the three-phase conductive strip is an injection molded insert molded in engineering plastic, the injection molded insert being embedded in the three-phase conductive strip slot.

3. The hall sensor module of claim 1 wherein the arcuate rim of the first side frame has two self-tapping screw retaining rings on one side thereof for securing the hall sensor module to a mounting plate on the housing of a brushless motor of a washing machine.

4. The hall sensor module of claim 1 wherein the side of the first side frame facing away from the arcuate frame is free of a frame, 7 output ports connected to the motor controller are provided at intervals on the outer edge of the intermediate web without a frame, the output ports being divided into two groups and concentrated at two ends of the outer edge of the intermediate web; and a three-phase power output port of a third three-phase power output port, a second three-phase power output port and a three-phase power output port of a first three-phase power output port are arranged at one end outside the closed cavity, four output ports of a seventh output port, a sixth output port, a fifth output port and a fourth output port are arranged at the other end, and the 7 output ports are connected with corresponding input ends of the motor controller through respective wires.

5. The hall sensor module of claim 1 wherein the cartridge is made of an engineering plastic.