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CN-224233498-U - Motor position sensor of braking system

CN224233498UCN 224233498 UCN224233498 UCN 224233498UCN-224233498-U

Abstract

The utility model relates to a motor position sensor of a brake system, which comprises a sensor body and a guide post, wherein the guide post is injection-molded on the sensor body, a signal pin of the sensor body is positioned in the guide post, a convex point, a guide sheet and a sealing ring are sequentially arranged on the guide post from the end far from the sensor body to the end close to the sensor body, the convex point is in transition fit with an ECU hole, the guide sheet is in clearance fit with a valve body through hole, the sealing ring is in interference fit with the valve body through hole, and a circle of concentric positioning plates are arranged on the sensor body. The utility model has the advantages that the convex points, the guide sheets and the sealing rings are arranged on the guide posts, and through the excessive matching of the convex points and the ECU, the clearance matching of the guide structure and the through holes of the valve body and the interference matching of the sealing rings and the through holes of the valve body realize the good matching relation between the motor position sensor and the valve body as well as between the motor position sensor and the ECU, thereby avoiding the performance failure of the one box system on the electric matching caused by the assembly problem and the durability problem of the motor position sensor.

Inventors

  • Tao Yepeng
  • CHEN JIANMIN

Assignees

  • 浙江沃德尔电子有限公司

Dates

Publication Date
20260512
Application Date
20250410

Claims (9)

  1. 1. The motor position sensor of the brake system is characterized by comprising a sensor body and a guide post, wherein the guide post is injection molded on the sensor body, a signal pin of the sensor body is positioned in the guide post, a bump, a guide sheet and a sealing ring are sequentially arranged on the guide post from the end far away from the sensor body to the end close to the sensor body, the bump is in transition fit with an ECU hole, the guide sheet is in clearance fit with a valve body through hole, the sealing ring is in interference fit with the valve body through hole, and a circle of concentric positioning plate is arranged on the sensor body.
  2. 2. The motor position sensor of claim 1, wherein the protruding points are distributed on the end of the guide post far away from the sensor body in an annular equally-distributed manner, and the diameter of a circle formed on the outer side of each protruding point is larger than the diameter of the ECU hole.
  3. 3. The motor position sensor of the brake system of claim 1, wherein the guide plates are uniformly distributed in the middle section of the guide post in a ring shape, and the diameter of a circle formed on the outer side of each guide plate is smaller than or equal to the diameter of a through hole of the valve body.
  4. 4. The motor position sensor of claim 3, wherein said guide plate is disposed axially along the wire post.
  5. 5. The motor position sensor of the brake system according to claim 1, wherein the guide post is provided with an annular groove near the end of the sensor body, the sealing ring is arranged in the annular groove, and the outer diameter of the sealing ring is larger than the diameter of the through hole of the valve body.
  6. 6. The motor position sensor of claim 1, wherein the signal pins of the sensor body are divided into two groups of first sides and second sides which are opposite to each other and are respectively positioned on the guide posts, a plurality of weight-reducing hollows are arranged between the first sides and the second sides of the guide posts, and the first sides and the second sides of the guide posts are provided with arc-shaped reinforcing plates which extend horizontally.
  7. 7. The motor position sensor of the brake system of claim 1, wherein the concentric locating plates are uniformly distributed on the sensor body in a ring shape, and locating protrusions are arranged on the side surfaces of the concentric locating plates.
  8. 8. The motor position sensor of claim 1 or 7, wherein the concentric locating plate is provided with crush points.
  9. 9. The motor position sensor of claim 1, wherein the sensor body is provided with an angle positioning column.

Description

Motor position sensor of braking system Technical Field The utility model relates to the technical field of position sensors, in particular to a motor position sensor of a brake system. Background Along with the popularization and application of new energy vehicles, more and more new energy vehicles cancel the original vacuum brake system design, and a one box system is adopted for the brake booster system design, but after the one box system is adopted, a longer valve body structure exists between the motor corner blade and the ECU, so that how to realize the cooperation between the motor position sensor and the long valve body is particularly critical. Part of motor position sensors transmit signals of motor rotating angle blades and ECU signals through thick and large valve bodies in the form of wire harnesses and standard connectors, but the scheme has the conditions of high manufacturing cost and complex procedures. However, if the direct injection molding scheme is adopted, poor contact of the signal end of the motor position sensor is often caused by problems of positioning and verticality. Disclosure of Invention The utility model mainly solves the problems, and provides the motor position sensor of the brake system, which realizes concentricity of the guide post and the through hole of the valve body by arranging the convex points, the guide structure and the sealing rings on the guide post, thereby ensuring good contact between the information pin of the sensor and the ECU. The technical scheme includes that the motor position sensor of the brake system comprises a sensor body and a guide post, wherein the guide post is injection-molded on the sensor body, a signal pin of the sensor body is positioned in the guide post, a bump, a guide sheet and a sealing ring are sequentially arranged on the guide post from the end far away from the sensor body to the end close to the sensor body, the bump is in transition fit with an ECU hole, the guide sheet is in clearance fit with a valve body through hole, the sealing ring is in interference fit with the valve body through hole, and a circle of concentric positioning plate is arranged on the sensor body. As a preferable scheme of the scheme, the convex points are uniformly distributed at the end, far away from the sensor body, of the guide column in an annular mode, and the diameter of a circle formed at the outer side of each convex point is larger than the diameter of an ECU hole. As a preferable scheme of the scheme, the guide plates are annularly and uniformly distributed in the middle section of the guide post, and the diameter of a circle formed on the outer side of each guide plate is smaller than or equal to the diameter of a through hole of the valve body. As a preferable aspect of the above-described aspect, the guide piece is disposed along the wire column axial direction. As a preferable scheme of the scheme, the guide post is provided with an annular groove close to the end of the sensor body, the sealing ring is arranged in the annular groove, and the outer diameter of the sealing ring is larger than the diameter of the through hole of the valve body. As a preferable scheme of the scheme, the signal pins of the sensor body are divided into two groups of first sides and second sides which are respectively positioned opposite to the guide posts, a plurality of weight-reducing hollowed-out parts are arranged between the first sides and the second sides of the guide posts, and the first sides and the second sides of the guide posts are provided with arc-shaped reinforcing plates which extend horizontally. As a preferable scheme of the scheme, the concentric locating plates are uniformly distributed on the sensor body in a ring shape, and locating protrusions are arranged on the side faces of the concentric locating plates. As a preferable mode of the above scheme, the concentric locating plate is provided with a crushing point. As a preferable mode of the above-mentioned mode, the sensor body is provided with an angle positioning column. The utility model has the advantages that the convex points, the guide sheets and the sealing rings are arranged on the guide posts, and through the excessive matching of the convex points and the ECU, the clearance matching of the guide structure and the through holes of the valve body and the interference matching of the sealing rings and the through holes of the valve body realize the good matching relation between the motor position sensor and the valve body as well as between the motor position sensor and the ECU, thereby avoiding the performance failure of the one box system on the electric matching caused by the assembly problem and the durability problem of the motor position sensor. Drawings FIG. 1 is a schematic diagram of a brake system motor position sensor. Fig. 2 is a partial enlarged view of the area a in fig. 1. Fig. 3 is a partial enlarged view of the region B in fig. 1. Fig. 4 is a partial enlarge