CN211652917U

CN211652917U - Vehicle speed sensor

Info

Publication number: CN211652917U
Application number: CN202020425963.7U
Authority: CN
Inventors: 万国强
Original assignee: Hangzhou Sensor Science And Technology Co ltd
Current assignee: Hangzhou Sensor Science And Technology Co ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-10-09
Anticipated expiration: 2030-03-30

Abstract

The utility model discloses a speed sensor belongs to sensor technical field. The utility model discloses an upper cover, casing and rubber non-magnetic conduction baffle down, the cooperation has flange type go-between upper cover and the casing down, the port inner edge department of upper cover has inside notch ring, its outer edge has outside turn-ups, a surface of flange type go-between has the spacing ring, this spacing ring cooperation is in the notch ring, the turn-ups that lies in spacing ring inboard on its flange type go-between covers a rubber non-magnetic conduction baffle pressure on the rubber gasket, rubber non-magnetic conduction baffle and upper cover form a confined space, install hall switch on the circuit board, also have outside turn-ups on the port of casing down, an upper cover, down the casing and lie in on the flange type go-between through bolted connection between the outer edge of spacing ring. The utility model discloses a will have hall switch's the position that needs are sealed and can rotate magnet steel portion and advance detachable sealed to the later stage carries out the inside maintenance and changes.

Description

Vehicle speed sensor

Technical Field

The utility model belongs to the technical field of automobile sensing, especially, relate to speed of a motor vehicle sensor.

Background

At present, because the gearbox of the domestic commercial vehicle generally has the problem of oil leakage, a vehicle speed sensor arranged on the gearbox rushes out first and must be corroded by high-temperature gearbox oil, manufacturers for producing the vehicle speed sensor at home generally adopt a circuit board sealing glue mode to passively protect components, the sealing glue is soaked in the high-temperature oil for a long time and then causes leakage or peeling phenomena after continuous thermal expansion and cold contraction, and thus the protection effect on the components can be gradually lost. Once the components are exposed in oil sludge of the gearbox, the vehicle speed sensor assembly is failed and scrapped due to corrosion or ablation, so that the failure rate of the vehicle speed sensor in the market is high, and the reliability is poor, just as a vehicle speed sensor with a sealing structure is disclosed in the publication No. CN203385748U, the sealing environment in the sensor is wrapped in a sensor shell, and after oil entering the sealing space is damaged, the upper end of the aluminum shell needs to be opened, so that parts in the sealing space can be replaced, which is equivalent to that the sensor is damaged firstly and then maintained.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a speed sensor, through the position that will have hall switch's needs sealed and can rotate magnet steel portion and advance detachable sealed to the later stage carries out the inside maintenance and changes.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model discloses a speed sensor, including upper cover, lower casing and the non-magnetic baffle of rubber, the cooperation has flange type go-between upper cover and the lower casing, the port inner edge department of upper cover has inside concave ring, and its outer edge has outside turn-ups, and the cooperation has the rubber packing ring on the concave ring, a surface of flange type go-between has the spacing ring, and this spacing ring cooperation is in the concave ring, and the turn-ups that lies in the spacing ring on its flange type go-between is pressed a non-magnetic baffle of rubber and is covered on the rubber packing ring, the non-magnetic baffle of rubber forms a confined space with the upper cover, installs the circuit board in this confined space, install hall switch on the circuit board, also have outside turn-ups on the port of casing down, upper cover, lower casing and lie in the flange type go-between the edge outside the spacing ring through bolted connection.

Furthermore, the lower shell and the flange type connecting ring are correspondingly provided with annular grooves on the opposite contact surfaces, and sealing rings are matched in the annular grooves.

Furthermore, the lower shell is internally provided with annular magnetic steel corresponding to the Hall switch.

Further, the rubber gasket has a concave ring in the case at the inner edge of the inner surface, and the rubber non-magnetic-conductive partition is fitted in the concave ring.

The utility model discloses following beneficial effect has:

the utility model discloses the position that will have hall switch's needs sealed and can rotate magnet steel portion and advance detachable sealed to in the later stage carry out the inside maintenance and change, rubber packing ring and rubber non-magnetic conduction baffle extrude sealed, sealed effect is inseparabler lastingly, and lower casing and upper cover in the device can install respectively, through flange type go-between additional bolted connection at last, produce deformation for the extrusion casing and include more simple, high-efficient.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of the internal structure of a sensor;

FIG. 2 is a schematic view of the fitting structure of a flange-type connection ring, a rubber gasket, and a rubber non-magnetic partition;

in the drawings, the components represented by the respective reference numerals are listed below:

the magnetic field sensor comprises a circuit board 1, a rubber gasket 2, a sealing ring 3, annular magnetic steel 4, a shell 5, a flange type connecting ring 6, a rubber non-magnetic-conductive partition 7, an upper cover 8, a Hall switch 9, a flange type connecting ring 601 and an annular groove 602.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Please refer to fig. 1-2, the utility model discloses a vehicle speed sensor, including drawing together upper cover 8, casing 5 and rubber non-magnetic conduction baffle 7 down, the cooperation has flange type go-between 6 between upper cover 8 and the casing 5 down, the port inner margin department of upper cover 8 has inside notch ring, its outer edge has outside turn-ups, the cooperation has rubber packing ring 2 on the notch ring, a surface of flange type go-between 6 has spacing ring 603, this spacing ring 603 cooperation is in the notch ring, the turn-ups that lies in spacing ring 603 intra-annular on its flange type go-between 6 presses a rubber non-magnetic conduction baffle 7 to cover on rubber packing ring 2, rubber non-magnetic conduction baffle 7 and upper cover 8 form a confined space, install circuit board 1 in this confined space, be about to install respectively the constructional device in upper cover 8 and the casing 5 down.

The other circuit board 1 is provided with a Hall switch 9, the port of the lower shell 5 is also provided with an outward flange, and the upper cover 8, the lower shell 5 and the edge positioned outside the upper limit ring 603 of the flange type connecting ring 6 are connected through bolts.

In addition, the lower shell 5 and the flange-type connecting ring 6 are also designed to be sealed, an annular groove 602 is correspondingly arranged on the opposite contact surfaces of the lower shell 5 and the flange-type connecting ring 6, and the sealing ring 3 is matched in the annular groove 602.

Wherein, install annular magnet steel 4 that corresponds hall switch 9 in the lower casing 5, be equipped with the terminal button inserted sheet on other upper cover 8, circuit board 1 welds to the three inserted sheet in the terminal button inserted sheet recess through three through-hole pad, and the magnetic ring rotor in lower casing 5 comprises oiliness bearing, pivot and the annular magnet steel 4 that the axial magnetizes, because make hall switch 9 and magnet steel can not the distance too far, otherwise can not accept the magnetic field.

The oil-retaining bearing is positioned at the central part of the lower shell 5, the rotating shaft penetrates through the oil-retaining bearing to rivet the annular magnetic steel 4 at the end part, and the annular groove at the root part of the internal thread of the lower shell 5 is provided with a rubber sealing gasket.

Further, the rubber gasket 2 has a concave ring in the tank at the inner edge of its inner surface, and the rubber non-magnetically conductive spacer 7 is fitted in the concave ring.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Vehicle speed sensor, including upper cover (8), lower casing (5) and rubber non-magnetic conduction baffle (7), its characterized in that: the cooperation has flange type go-between (6) between upper cover (8) and lower casing (5), the port inner edge department of upper cover (8) has inside concave ring, and its outer edge has outside turn-ups, and the cooperation has rubber packing ring (2) on the concave ring, a surface of flange type go-between (6) has spacing ring (603), and this spacing ring (603) cooperation is in the concave ring, and the turn-ups that lies in spacing ring (603) ring inboard on its flange type go-between (6) are with a rubber non-magnetic baffle (7) pressure cover on rubber packing ring (2), rubber non-magnetic baffle (7) and upper cover (8) form a confined space, install circuit board (1) in this confined space, install hall switch (9) on circuit board (1), also have outside turn-ups on the port of casing (5) down, upper cover (8), lower casing (5) and lie in flange type go-between the outer edge of spacing ring (603) on flange type go-between through the bolt (6), through the bolt And (4) connecting.

2. Vehicle speed sensor according to claim 1, characterised in that the lower casing (5) and the flange-type coupling ring (6) have respective annular grooves (602) on their facing contact surfaces, the annular grooves (602) having the sealing rings (3) fitted therein.

3. Vehicle speed sensor according to claim 1, characterised in that an annular magnetic steel (4) corresponding to the hall switch (9) is mounted in the lower casing (5).

4. Vehicle speed sensor according to claim 1, characterised in that the rubber gasket (2) has at the inner edge of its inner surface a female ring in the tank, in which the rubber non-magnetic diaphragm (7) fits.