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Novel mounting structure and motor speed sensor with same

An installation structure and a new type of technology, applied in the field of sensors, can solve the problems of large chip position deviation, quality accidents, wrong logic instructions, etc., and achieve the effects of stable product quality, overall cost reduction, and high sensing accuracy.

Pending Publication Date: 2022-03-25
KINETEK DE SHENG SHUNDE MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above technology, the inventor found in practice that since the internal structure of the motor speed sensor is very small, the accuracy of the chip position is affected by the assembly process and the deviation is large, resulting in the sensing accuracy of the chip exceeding the allowable range in the application
When the relative position of the chip and the magnetic core is misaligned or shifted, the error of the sensor output phase angle signal will be out of tolerance. The motor controller MCU will receive the out-of-tolerance signal of the motor speed sensor, and it will easily report the failure of the motor speed sensor, and it will be based on the wrong phase. The angle signal misjudged the direction of motor rotation and issued wrong logic instructions, which caused quality accidents and seriously affected the reputation of the product and the image of the company. Therefore, it is urgent to improve

Method used

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  • Novel mounting structure and motor speed sensor with same
  • Novel mounting structure and motor speed sensor with same
  • Novel mounting structure and motor speed sensor with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment discloses a new installation structure.

[0041] refer to figure 2 and image 3, the new installation structure includes an integrally formed installation shell 5, and the installation shell 5 is provided with a housing cavity 6 for inserting the magnetic core 4. After the magnetic core 4 enters the housing cavity 6, the south pole of the magnetic core 4 is close to the bottom of the housing cavity 6 , in contrast, the north pole of the magnetic core 4 is close to the opening of the housing cavity 6 . The opposite side walls of the installation housing 5 are provided with opening slots 51 along the direction from the mouth of the receiving cavity 6 to the bottom of the cavity. The opening slots 51 are through slots and the slot width is greater than the thickness of the circuit board 1 .

[0042] The new mounting structure also includes clamping parts 8 respectively arranged on the side walls of the two opening slots 51. The clamping parts 8 include a...

Embodiment 2

[0050] This embodiment discloses a new installation structure.

[0051] refer to Figure 5 and Image 6 , and the difference from Embodiment 2 is that: the installation shell 5 includes a first shell 52 and a second shell 53, and the first shell 52 and the second shell 53 are detachably connected by a buckle. The first housing 52 and the second housing 53 are respectively located on the upper and lower sides of the clamping plane of the mounting housing 5 , that is, respectively located on the upper and lower sides of the board surface of the circuit board 1 . The clamping member 8 is two limiting grooves 83 oppositely arranged along the clamping direction, each limiting groove 83 includes a first groove 831 and a second groove 832, and the first groove 831 and the second groove 832 is detachably connected and the detachment direction is consistent with the installation shell 5 . In order to make the connection between the first housing 52 and the second housing 53 more sta...

Embodiment 3

[0058] refer to Figure 7 and Figure 8 , the difference from Embodiment 2 is: the first housing 52 and the first housing 52 and the second housing 53 are respectively located on both sides of the clamping plane of the vertical installation housing 5, that is, they are respectively located on the left and right sides of the circuit board 1 board surface. side. The clamping member 8 is two limiting grooves arranged opposite to each other along the clamping direction, and the two limiting grooves are integrally formed with the first housing 52 and the second housing 53 respectively, which saves processing costs.

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Abstract

The invention discloses a novel mounting structure and a motor speed sensor with the same. The novel mounting structure comprises a mounting shell, the mounting shell comprises a containing cavity used for fixing a magnetic core, a plug-in groove allowing a chip to be inserted is formed in the position, corresponding to the bottom of the containing cavity, of the exterior of the mounting shell, and a clamping piece allowing a circuit board to be clamped is arranged on one side wall of the mounting shell or clamping pieces are arranged on the two opposite side walls of the mounting shell respectively. The motor speed sensor with the installation structure comprises a circuit board, a cable, a chip, a magnetic core and the novel installation structure, the pins of the chip are welded on the circuit board, the other end of the chip is inserted into the insertion groove, the magnetic core is located in the containing cavity, and at least one side wall of the circuit board is of a concave-convex structure so that the clamping piece can be clamped. According to the novel mounting structure, the problem that the relative positions of the magnetic core and the chip are not fixed can be solved, further development of a miniaturized sensor is promoted, standardization can be achieved in actual production, and the quality stability of a product is greatly improved.

Description

technical field [0001] The invention relates to the field of sensors, in particular to a novel mounting structure and a motor speed sensor with the mounting structure. Background technique [0002] The motor speed sensor is used to test the variable displacement of the motor per unit time. It mainly calculates the speed and direction of the motor by calculating the number of pulses per unit time and the phase angle of the two-channel pulses. In recent years, motor speed sensors have become more and more popular among speed sensor manufacturers in terms of highly integrated and intelligent chips. The high-speed counter port of the microprocessor is used as the data acquisition of the vehicle speed sensor, and the calculation and graphic display processing of the collected data are realized by software control. The completed detection device has the advantages of high test accuracy, reliable data communication, good graphical user interface, strong anti-interference ability, ...

Claims

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Application Information

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IPC IPC(8): G01P1/02G01P3/42
CPCG01P1/02G01P3/42
Inventor 张庆华支守礼
Owner KINETEK DE SHENG SHUNDE MOTOR CO LTD