CN212722933U

CN212722933U - Intelligent automobile ABS/ESP wheel speed sensor

Info

Publication number: CN212722933U
Application number: CN202022026298.7U
Authority: CN
Inventors: 赵小东; 李洪利; 刘海涛; 仲波
Original assignee: Changzhou Info Sensor Technology Co ltd
Current assignee: Shanghai Longgan Auto Electronics Co ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-03-16
Anticipated expiration: 2030-09-16

Abstract

The utility model discloses an intelligent automobile ABS/ESP wheel speed sensor, which comprises a sensor connector shell, wherein one side of the sensor connector shell is provided with a sensor fixing disc, one side of the sensor fixing disc is provided with a sensor connecting shell, one end of the sensor connecting shell is provided with a sensor body, a waterproof and breathable layer is arranged inside the sensor body, one side of the waterproof and breathable layer is provided with a heat dissipation through hole, the inner wall of the heat dissipation through hole is fixedly connected with one side of a drying ring, the other side of the drying ring is provided with a dust filter screen, and the lower end of the heat dissipation through hole is provided with a sealing ring; this fast sensor of intelligent automobile ABS/ESP wheel can prevent the inside of the entering sensor body of sewage when the fast sensor of wheel is using through setting up waterproof ventilative layer and sealing washer to the accuracy nature of sensor body has been ensured.

Description

Intelligent automobile ABS/ESP wheel speed sensor

Technical Field

The utility model relates to a fast sensor technical field of wheel specifically is a fast sensor of intelligent automobile ABS ESP wheel.

Background

Wheel speed sensors of the electromagnetic induction type are provided in ABS systems of modern vehicles, and may be installed in a final drive or a transmission. The wheel speed sensor is composed of a permanent magnet, a magnetic pole, a coil and a gear ring. When the gear ring rotates in the magnetic field, the gap between the tooth top of the gear ring and the electrode changes at a certain speed, so that the magnetic resistance in the magnetic circuit changes. As a result, the magnetic flux is periodically increased and decreased, an induced voltage proportional to the rate of increase and decrease of the magnetic flux is generated at both ends of the coil, and the alternating voltage signal is transmitted to the electronic controller. The wheel speed sensor is classified into: 1. the electromagnetic induction type vehicle speed sensor is mounted on a shell near an output shaft of the automatic transmission and used for detecting the rotating speed of the output shaft of the automatic transmission. And the electronic control unit ECU calculates the vehicle speed according to the signal of the vehicle speed sensor and is used as a basis for gear shifting control. The speed sensor consists of a permanent magnet and an electromagnetic induction coil and is fixedly installed on a shell near an output shaft of the automatic transmission, a parking locking gear on the output shaft is an induction rotor, when the output shaft rotates, a convex tooth of the parking locking gear continuously approaches or departs from the speed sensor, so that magnetic flux in the coil changes, alternating current is generated, the higher the speed is, the higher the rotating speed of the output shaft is, the higher the frequency of an induction voltage pulse is, and the electric control component calculates the running speed of the automobile according to the size of the induction voltage pulse. Using a universal meter to measure conduction, and measuring whether a voltage signal exists or not according to the resistance value; 2. hall wheel speed sensor, it is very special in the automotive application, this is mainly because the Hall effect sensor of confliction of space position around the speed change gear is the solid sensor, they are mainly used in crankshaft angle and camshaft position, used for switching on and off the ignition and fuel injection circuit to trigger, it also uses in other position and speed control computer circuit needing to control the rotating part; 3. the photoelectric speed sensor is a solid photoelectric semiconductor sensor, and is composed of two optical conductor fibers with holes on its rotary disk, a light-emitting diode and a photoelectric triode as optical sensor. An amplifier based on a phototransistor supplies a signal of sufficient power to the engine control computer or ignition module, the phototransistor and amplifier generating a digital output signal (switching pulse); 4. the vehicle speed sensor is composed of magnetic resistance element, rotor, PCB and magnetic ring. When the gear drives the sensor shaft to rotate, the multi-stage magnetic ring connected with the shaft also rotates at the same time, the rotation of the magnetic ring causes the change of magnetic flux, and the resistance value of a magnetic resistance element in an integrated circuit also changes.

The prior art has the following defects or problems:

1. when the wheel speed sensor used by an intelligent automobile in the current market is used, sewage and dust on a road can easily enter the interior of the wheel speed sensor, so that a detection head and a gear ring of the wheel speed sensor are polluted, and the accuracy of the wheel speed sensor is reduced;

2. moreover, when the conventional wheel speed sensor dissipates heat, the moisture contained in the air easily causes the humidity inside the wheel speed sensor, which affects the use of the wheel speed sensor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an intelligent automobile ABS/ESP wheel speed sensor to the weak point of prior art to solve the problem that proposes in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a fast sensor of intelligent automobile ABS ESP wheel, includes sensor connector shell, one side of sensor connector shell is provided with the sensor fixed disk, one side of sensor fixed disk is provided with the sensor and connects the shell, the one end that the shell was connected to the sensor is provided with the sensor body, the inside of sensor body is provided with waterproof ventilative layer, one side on waterproof ventilative layer is provided with the heat dissipation through-hole, the inner wall of heat dissipation through-hole and one side fixed connection of dry ring, the opposite side of dry ring is provided with the dust filter screen, the lower extreme of heat dissipation through-hole is provided with the sealing washer.

As the utility model discloses an optimized technical scheme, the quantity of heat dissipation through-hole is two sets of, and a set of is three.

As the utility model discloses a preferred technical scheme, the inner wall of heat dissipation through-hole is connected with the outside block of dry ring.

As the utility model discloses a preferred technical scheme, dry ring is made by the calcium chloride drier, the external diameter size of dry ring and the internal diameter size looks adaptation of heat dissipation through-hole.

As the utility model discloses a preferred technical scheme, the inner wall of heat dissipation through-hole is connected with the outside block of dust filter screen, the internal diameter size of dry ring and the external diameter size looks adaptation of dust filter screen.

As the preferred technical scheme of the utility model, the quantity on waterproof ventilative layer is two sets of, waterproof ventilative layer is made by the macromolecular compound that tetrafluoroethylene formed through the polymerization.

As the utility model discloses an optimized technical scheme, the sealing washer is the ring form, the sealing washer is connected with the inner wall block of sensor body, the external diameter of sealing washer and the internal diameter size looks adaptation of sensor body, the sealing washer is made by natural rubber.

Compared with the prior art, the utility model provides a fast sensor of intelligent automobile ABS/ESP wheel possesses following beneficial effect:

1. according to the intelligent automobile ABS/ESP wheel speed sensor, the waterproof breathable layer and the sealing ring are arranged, so that when the wheel speed sensor is used, sewage can be prevented from entering the sensor body, and the accuracy of the sensor body is guaranteed;

2. this kind of fast sensor of intelligent automobile ABS/ESP wheel, through setting up the heat dissipation through-hole, make the radiating effect of sensor body better to a certain extent, through setting up the dust filter screen, can filter the dust to avoid dust to the invasion of sensor body, through setting up dry ring, make the inside air of heat dissipation through-hole drier, also improved the life of sensor body to a certain extent.

Drawings

Fig. 1 is a schematic perspective view of the structure of the present invention;

FIG. 2 is a schematic view of a sensor body according to the present invention;

FIG. 3 is a schematic plan view of a sensor body according to the present invention;

fig. 4 is a schematic plan view of the heat dissipation through hole of the structure of the present invention.

In the figure: 1. a sensor connector housing; 2. a sensor fixing disc; 3. the sensor is connected with the shell; 4. a sensor body; 5. a heat dissipating through hole; 6. a waterproof breathable layer; 7. a seal ring; 8. a dust filter screen; 9. and drying the circular ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, in this embodiment: including sensor connector shell 1, one side of sensor connector shell 1 is provided with sensor fixed disk 2, one side of sensor fixed disk 2 is provided with sensor connection shell 3, the one end that shell 3 was connected to the sensor is provided with sensor body 4, the inside of sensor body 4 is provided with waterproof ventilative layer 6, one side of waterproof ventilative layer 6 is provided with heat dissipation through-hole 5, the inner wall of heat dissipation through-hole 5 and one side fixed connection of dry ring 9, the opposite side of dry ring 9 is provided with dust filter screen 8, the lower extreme of heat dissipation through-hole 5 is provided with sealing washer 7.

In this embodiment, the number of the heat dissipation through holes 5 is two, and one of the heat dissipation through holes 5 is three, so that the sensor body 4 has a good heat dissipation function; the inner wall of the heat dissipation through hole 5 is connected with the outer side of the drying ring 9 in a clamping mode, so that air can be dried while heat dissipation is achieved, and moisture in the sensor body 4 is effectively avoided; the drying ring 9 is made of a calcium chloride drying agent, and the outer diameter size of the drying ring 9 is matched with the inner diameter size of the heat dissipation through hole 5, so that the drying ring 9 can be conveniently connected; the inner wall of the heat dissipation through hole 5 is connected with the outer side of the dust filter screen 8 in a clamping manner, the inner diameter of the drying ring 9 is matched with the outer diameter of the dust filter screen 8, and dust in the air can be filtered out, so that dust deposition in the sensor body 4 is effectively avoided; the number of the waterproof breathable layers 6 is two, and the waterproof breathable layers 6 are made of high molecular compounds formed by polymerizing tetrafluoroethylene, so that the inside of the sensor body 4 can be well kept dry, and the service life of the sensor body 4 is prolonged to a certain extent; sealing washer 7 is the ring form, and sealing washer 7 is connected with the inner wall block of sensor body 4, and the external diameter of sealing washer 7 and the internal diameter size looks adaptation of sensor body 4, and sealing washer 7 is made by natural rubber, and is structural more reasonable.

The utility model discloses a theory of operation and use flow: when the user uses, through heat dissipation through-hole 5, can effectually dispel the heat to the inside of sensor body 4, thereby make the life of fast sensor main part 4 of wheel more permanent, through waterproof ventilative layer 6 and sealing washer 7, make the inside environment of sensor body 4 be in dry state, fine avoiding on the road sewage to the invasion of sensor body 4, the effectual precision that improves sensor body 4 and use, through dust filter screen 8, can filter dust and dust in the air, the interference of the dust of fast sensor of wheel in the use has been reduced, through dry ring 9, can heat dissipation through-hole 5 department carries out the drying to the moisture in the air, thereby fine guarantee the inside drying of sensor body 4.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an intelligent automobile ABS/ESP wheel speed sensor which characterized in that: including sensor connector shell (1), one side of sensor connector shell (1) is provided with sensor fixed disk (2), one side of sensor fixed disk (2) is provided with sensor connection shell (3), the one end that shell (3) was connected to the sensor is provided with sensor body (4), the inside of sensor body (4) is provided with waterproof ventilative layer (6), one side of waterproof ventilative layer (6) is provided with heat dissipation through-hole (5), one side fixed connection of the inner wall of heat dissipation through-hole (5) and dry ring (9), the opposite side of dry ring (9) is provided with dust filter screen (8), the lower extreme of heat dissipation through-hole (5) is provided with sealing washer (7).

2. The intelligent ABS/ESP wheel speed sensor as claimed in claim 1, wherein: the number of the heat dissipation through holes (5) is two, and one is three.

3. The intelligent ABS/ESP wheel speed sensor as claimed in claim 1, wherein: the inner wall of the heat dissipation through hole (5) is connected with the outer side of the drying ring (9) in a clamping mode.

4. The intelligent ABS/ESP wheel speed sensor as claimed in claim 1, wherein: the drying ring (9) is made of a calcium chloride drying agent, and the outer diameter of the drying ring (9) is matched with the inner diameter of the heat dissipation through hole (5).

5. The intelligent ABS/ESP wheel speed sensor as claimed in claim 1, wherein: the inner wall of the heat dissipation through hole (5) is connected with the outer side of the dust filter screen (8) in a clamping mode, and the inner diameter size of the drying ring (9) is matched with the outer diameter size of the dust filter screen (8).

6. The intelligent ABS/ESP wheel speed sensor as claimed in claim 1, wherein: the number of the waterproof breathable layers (6) is two, and the waterproof breathable layers (6) are made of high molecular compounds formed by polymerizing tetrafluoroethylene.

7. The intelligent ABS/ESP wheel speed sensor as claimed in claim 1, wherein: the sensor is characterized in that the sealing ring (7) is annular, the sealing ring (7) is connected with the inner wall of the sensor body (4) in a clamping mode, the outer diameter of the sealing ring (7) is matched with the inner diameter of the sensor body (4), and the sealing ring (7) is made of natural rubber.