CN220874906U

CN220874906U - Motor angular position sensor shell structure

Info

Publication number: CN220874906U
Application number: CN202322128191.7U
Authority: CN
Inventors: 陈志贤; 陈诚; 卢建阳
Original assignee: Kaisheng Power Technology Jiaxing Co ltd
Current assignee: Kaisheng Power Technology Jiaxing Co ltd
Priority date: 2023-08-08
Filing date: 2023-08-08
Publication date: 2024-04-30
Anticipated expiration: 2033-08-08

Abstract

The utility model discloses a motor angular position sensor shell structure, which comprises an upper cover, a lower cover and a fixed rod which are sequentially connected, wherein a PCBA plate is arranged between the upper cover and the lower cover, the fixed rod is vertically arranged, the fixed rod is in a rectangular column shape, two opposite side surfaces of the fixed rod are respectively provided with a plurality of first positioning structures along the length direction, the other two opposite side surfaces are respectively provided with a plurality of second positioning structures along the length direction, the first positioning structures comprise grooves and a plurality of positioning holes which are positioned in the grooves and are horizontally distributed, and the second positioning structures comprise positioning bulges; this motor angular position sensor shell structure is through being provided with a plurality of recesses, a plurality of locating holes a plurality of location archs of evenly arranging on the dead lever to through these special structures, reduce the deformation volume of moulding plastics in-process, effectively guarantee straightness accuracy and dead lever and the perpendicularity between the lower cover, improved product dimension precision, reduced the product defective rate.

Description

Motor angular position sensor shell structure

Technical Field

The utility model relates to the technical field of motor angle position sensors, in particular to a motor angle position sensor shell structure.

Background

The motor angular position sensor uses the physical principle of eddy currents to detect the position of a metal target moving over a set of coils consisting of one transmitter coil and two receiver coils. By demodulating and processing the secondary voltage from the receiver coil, a position signal of the target coil can be obtained. The motor control system is beneficial to stable operation, so that the high-speed motor can furthest improve the torque, reduce torque ripple and improve the efficiency.

The motor angle position sensor in the existing market is complex in structure, high in size reject ratio, difficult to meet the precision requirement in the assembly due to the size requirements such as perpendicularity and straightness, and relatively high in cost.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides a motor angle position sensor shell structure, which is characterized in that a plurality of grooves and a plurality of positioning holes which are uniformly distributed are formed in a fixed rod, so that the deformation in the injection molding process is reduced through the special structures, the straightness and the perpendicularity between the fixed rod and a lower cover are effectively ensured, the product size precision is improved, and the product reject ratio is reduced.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The utility model provides a motor angular position sensor shell structure, includes upper cover, lower cover and the dead lever that connects gradually, be provided with PCBA board between upper cover and the lower cover, the dead lever is vertical to be arranged and be located one side of lower cover bottom, the dead lever is the rectangle column to two of them opposite sides of dead lever all are provided with a plurality of first location structures along length direction, and two other opposite sides all are provided with a plurality of second location structures along length direction.

Further, the first positioning structure comprises a groove and a plurality of positioning holes which are positioned in the groove and horizontally distributed, and the positioning holes on two sides of the fixing rod are mutually aligned and communicated.

Further, the second positioning structure comprises positioning protrusions, and the positioning protrusions are vertically and uniformly distributed along the length direction of the fixing rod.

Further, a convex ring is arranged at one end, connected with the lower cover, of the fixing rod, a mounting ring groove is arranged on the side face of the convex ring, and a sealing ring is arranged in the mounting ring groove.

Furthermore, the upper cover and the lower cover are ring-shaped integrally.

Compared with the prior art, the utility model has the beneficial effects that:

According to the utility model, the plurality of grooves, the plurality of positioning holes and the plurality of positioning protrusions which are uniformly distributed are formed on the fixed rod, so that the deformation in the injection molding process is reduced through the special structures, the straightness and the perpendicularity between the fixed rod and the lower cover are effectively ensured, the product size precision is improved, the product reject ratio is reduced, the sensor structure is simpler, the processing and the manufacturing are easy, and the cost is effectively reduced.

Drawings

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is an exploded view of a motor angular position sensor housing construction;

Fig. 2 is a schematic structural view of a housing structure of a motor angular position sensor.

Marked in the figure as: 1. an upper cover; 2. PCBA board; 3. a lower cover; 4. a PIN needle; 5. a seal ring; 6. a fixed rod; 7. a groove; 8. positioning holes; 9. positioning the bulge; 10. a convex ring; 11. and (5) installing the annular groove.

Detailed Description

In the description of the present utility model, it should be noted that, for the azimuth words such as the terms "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, only for convenience of describing the present utility model and simplifying the description, but do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and should not be construed as limiting the specific protection scope of the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first", "a second" feature may explicitly or implicitly include one or more of such feature, and in the description of the present utility model, the meaning of "a number", "a number" is two or more, unless otherwise specifically defined.

The utility model provides a motor angular position sensor shell structure, includes upper cover 1, lower cover 3 and dead lever 6 that connect gradually, be provided with PCBA board 2 between upper cover 1 and the lower cover 3, dead lever 6 is vertical to be arranged and be located one side of lower cover 3 bottoms, dead lever 6 is the rectangle column to two of them opposite sides of dead lever 6 all are provided with a plurality of first location structures along length direction, and two other opposite sides all are provided with a plurality of second location structures along length direction.

In this embodiment, preferably, the first positioning structure includes a groove 7 and a plurality of positioning holes 8 located in the groove 7 and distributed horizontally, and the positioning holes 8 on two sides of the fixing rod 6 are aligned and communicated with each other.

In this embodiment, preferably, the second positioning structure includes positioning protrusions 9, and a plurality of positioning protrusions 9 are vertically and uniformly distributed along the length direction of the fixing rod 6.

In this embodiment, preferably, one end of the fixing rod 6 connected with the lower cover 3 is provided with a plurality of PIN needles 4 extending into the lower cover 3, and the PIN needles 4 and the fixing rod 6 are formed by injection molding at one time, so that the PIN needles 4 are fixed on the fixing rod 6 by injection molding.

In this embodiment, preferably, the fixing rod 6 and the lower cover 3 are formed by two-shot injection molding, and the fixing rod 6 is used as an insert on the basis of one-shot forming of the PIN needle 4 and the fixing rod 6, and then the fixing rod 6 and the lower cover 3 are formed into a whole by two-shot injection molding, so that the fixing rod is formed integrally.

In this embodiment, preferably, the upper cover 1 and the lower cover 3 are fixed by laser welding, so as to achieve the fixed connection between the lower cover 3 and the upper cover 1.

In this embodiment, preferably, a convex ring 10 is disposed at the end of the fixing rod 6 connected to the lower cover 3, a mounting ring groove 11 is disposed on the side surface of the convex ring 10, and a sealing ring 5 is installed in the mounting ring groove 11.

In this embodiment, preferably, the upper cover 1 and the lower cover 3 are both annular.

Working principle and advantages:

The motor angle position sensor comprises six parts in total, and sequentially comprises an upper cover 1, a PCBA plate 2, a lower cover 3, a plurality of PIN needles 4, a sealing ring 5 and a fixing rod 6, wherein the fixing rod 6 is used for fixing the PIN needles 4 at one end part through sequential injection molding, and then the fixing rod 6 is used as an insert, and the lower cover 3 and the fixing rod 6 are molded into a whole through secondary injection molding. And then the PCBA plate 2 is fixed in the lower cover 3 through hot riveting, the upper cover 1 and the lower cover 3 are fixed through laser welding, and finally the sealing ring 5 is arranged, so that the assembly of the motor angle position sensor is completed.

Compared with the traditional motor angle position sensor, the utility model has the advantages that the grooves 7, the positioning holes 8 and the positioning protrusions 9 which are uniformly distributed are arranged on the fixed rod 6, so that the deformation in the injection molding process is reduced through the special structures, the straightness and the perpendicularity between the fixed rod 6 and the lower cover 3 are effectively ensured, the product size precision is improved, the product reject ratio is reduced, the sensor structure is simpler, the processing and the manufacturing are easy, and the cost is effectively reduced.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. A motor angular position sensor housing structure, characterized in that: including upper cover, lower cover and the dead lever that connects gradually, be provided with PCBA board between upper cover and the lower cover, the dead lever is vertical to be arranged and be located one side of lower cover bottom, the dead lever is rectangular column to two of them relative sides of dead lever all are provided with a plurality of first location structures along length direction, and two other relative sides all are provided with a plurality of second location structures along length direction.

2. A motor angular position sensor housing structure according to claim 1, wherein: the first positioning structure comprises a groove and a plurality of positioning holes which are positioned in the groove and horizontally distributed, and the positioning holes on two sides of the fixing rod are mutually aligned and communicated.

3. A motor angular position sensor housing structure according to claim 1, wherein: the second positioning structure comprises positioning protrusions, and the positioning protrusions are vertically and uniformly distributed along the length direction of the fixing rod.

4. A motor angular position sensor housing structure according to claim 1, wherein: the fixed rod is provided with a convex ring at one end connected with the lower cover, a mounting ring groove is arranged on the side face of the convex ring, and a sealing ring is arranged in the mounting ring groove.

5. A motor angular position sensor housing structure according to claim 1, wherein: the upper cover and the lower cover are annular integrally.