CN210603709U

CN210603709U - Assembly structure of plastic shell engine oil pressure sensor

Info

Publication number: CN210603709U
Application number: CN201921918170.2U
Authority: CN
Inventors: 张金陵
Original assignee: Wuhan Shendong Auto Electronics Co Ltd
Current assignee: Wuhan Shendong Auto Electronics Co Ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-05-22
Anticipated expiration: 2029-11-08

Abstract

The utility model provides a technical scheme is a plastic casing machine oil pressure sensor's assembly structure. The assembly structure comprises a sensor shell, a PCB module, a cover plate and a pressure chip, wherein an oil inlet hole is formed in the cover plate, the PCB module is installed between the sensor shell and the cover plate, the pressure chip is fixedly installed on the PCB module, and the PCB module is welded on the sensor shell; be equipped with two at least buckles at apron and sensor housing connection position, correspond on sensor housing and be equipped with two at least draw-in grooves, the apron passes through buckle and draw-in groove joint with sensor housing to be equipped with some glue groove at apron and sensor housing butt joint face, behind apron and sensor housing joint, pack glue in some glue grooves and form the viscose face. The utility model discloses simple process adopts the buckle to connect, has avoidd the coefficient of expansion in the glue curing process, promotes the sealed effect of glue to can promote the resistance to pressure impact's of sensor performance.

Description

Assembly structure of plastic shell engine oil pressure sensor

Technical Field

The utility model relates to a plastic casing pressure sensor specifically is a plastic casing machine oil pressure sensor's assembly structure.

Background

All automobile engines need to be provided with pressure sensors, some pressure sensors are provided with metal shells, and part of automobile models are also provided with engine oil pressure sensors with plastic shells. Aiming at the pressure sensor of the plastic shell, the original structure assembly process comprises the following steps: the PCB module needs to be installed on the cover plate firstly, the PCB module is fixed and sealed by glue dispensing through hot melt plastics, the assembly is installed on the shell and sealed by glue dispensing again, the connection between the PCB module and the shell needs a flexible circuit board to be connected, the process is relatively complex, and the pressure impact resistance is poor.

Disclosure of Invention

An object of the utility model is to provide a buckle connection cooperates plastic housing machine oil pressure sensor's of glue water seal assembly structure, this assembly structure simple process can avoid the coefficient of expansion in the glue solidification process to the influence of product sealing performance, promotes the sealed effect of glue to can promote the resistance to pressure impact's of sensor performance.

In order to realize above-mentioned technical purpose, the utility model provides a technical scheme is a plastic casing machine oil pressure sensor's assembly structure, its characterized in that: the assembly structure comprises a sensor shell, a PCB module, a cover plate and a pressure chip, wherein an oil inlet hole is formed in the cover plate, the PCB module is installed between the sensor shell and the cover plate, the pressure chip is fixedly installed on the PCB module, and the PCB module is welded on the sensor shell; be equipped with two at least buckles at apron and sensor housing connection position, correspond on sensor housing and be equipped with two at least draw-in grooves, the apron passes through buckle and draw-in groove joint with sensor housing to be equipped with some glue groove at apron and sensor housing butt joint face, behind apron and sensor housing joint, pack glue in some glue grooves and form the viscose face.

The utility model discloses better technical scheme: the number of the buckles is four, and two of the four buckles are symmetrically distributed on the covering surface of the cover plate and the sensor shell in a group; four clamping grooves are correspondingly arranged on the covering surface of the sensor shell.

The utility model discloses better technical scheme: the dispensing groove is a U-shaped groove, a boss matched with the U-shaped dispensing groove is correspondingly arranged on the sensor shell, and after the cover plate is clamped with the sensor shell, the boss on the sensor shell is correspondingly embedded into the U-shaped dispensing groove on the cover plate and is bonded through glue.

The utility model discloses further technical scheme: the cover face of the cover plate is embedded into the cover face of the sensor shell and is clamped with the clamping groove through a buckle.

The utility model discloses a buckle is as mechanical connection, then is equipped with U type point gum groove on the apron, designs a boss and beats the gum groove cooperation on the shell, under the packing of glue, forms an inclosed space, reaches the effect that the product is sealed and withstand voltage strikes, guarantees that the pressure chip on the PCB module can only be through oil feed/gas pocket and external intercommunication on the apron, and all the other parts need all guarantee to keep apart completely with the external world to can bear certain pressure and strike. The utility model discloses a glue is single component epoxy glue, needs the high temperature curing, and the curing process can produce certain inflation.

The assembly structure of the utility model only needs to fix the PCB module on the shell through welding connection and fixation, and the assembly and the cover plate are glued, assembled and sealed, so that the process is relatively simplified; and the buckle connection mode can avoid the expansion coefficient in the glue curing process, improves the sealing effect of the glue, and can improve the pressure impact resistance of the sensor.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view AA in FIG. 2;

fig. 4 is a cross-sectional view BB of fig. 2.

In the figure: 1-cover plate, 2-fastener 3-card slot 4-sensor shell, 5-PCB module, 6-pressure chip, 7-oil inlet, 8-U type glue dispensing slot, 9-boss and 10-bonding surface.

Detailed Description

The present invention will be further explained with reference to the drawings and examples. Fig. 1 to 4 are drawings of the embodiment, which are drawn in a simplified manner and are only used for clearly and concisely illustrating the purpose of the embodiment of the present invention. The following detailed description of the embodiments of the present invention is presented in the drawings and is not intended to limit the scope of the invention as claimed. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled 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 "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The embodiment provides an assembly structure of plastic casing machine oil pressure sensor, as shown in fig. 1-4, including sensor housing 4, PCB module 5, apron 1 and pressure chip 6, be equipped with inlet port 7 on apron 1, PCB module 5 is installed between sensor housing 4 and apron 1, and pressure chip 6 fixed mounting is on PCB module 5, and PCB module 5 welds on sensor housing 4. Four buckles 2 are arranged at the connecting part of the cover plate 1 and the sensor shell 4, and two of the four buckles are symmetrically distributed on the covering surface of the cover plate 1 and the sensor shell 4 in a group; four clamping grooves 3 are correspondingly arranged on the sensor shell 4, the cover closing surface of the cover plate 1 is embedded into the cover closing surface of the sensor shell 4, and the cover closing surface is connected with the clamping grooves 3 in a clamping mode through the buckles 2, so that mechanical connection is achieved. As shown in fig. 3 and 4, a U-shaped dispensing slot 8 is formed in a butt joint surface of the cover plate 1 and the sensor housing 4, and a boss 9 matched with the U-shaped dispensing slot 8 is correspondingly formed on the sensor housing 4, after the cover plate 1 is clamped with the sensor housing 4, the boss 9 on the sensor housing 4 is correspondingly embedded into the U-shaped dispensing slot 8 on the cover plate 1, and glue is filled in a position where the U-shaped dispensing slot 8 is matched with the boss 9, so that an adhesive surface 10 is formed.

The utility model discloses in the glue curing process, apron 1 has had the mechanical connection of buckle with sensor housing 4, and the inflation of glue has can't lead to apron 1 and sensor housing 4's relative position skew, and glue can only expand outside the U type groove, has further increaseed the area of sealed cross-section, has promoted the sealing performance of product and the performance that resistance to pressure is strikeed to assembly process simplifies. The U-shaped groove is of an outer U-shaped characteristic after glue forming, and the boss is of an inner U-shaped characteristic after glue forming.

The utility model discloses be used for installing on automobile engine after the seal assembly, carry out the important device that detects to vehicle engine's machine oil/pipeline gas pressure, the data that detect can help controlling the normal operating of engine. In its testing process, machine oil enters into inside the product through inlet port 7, by the pressure of pressure chip 6 response machine oil, whole inner chamber except the inlet port, other positions all need be kept apart with the external world completely, can not have the leakage, and can bear certain pressure and strike.

The above description is only one embodiment of the present invention, and the description is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a plastic casing machine oil pressure sensor's assembly structure which characterized in that: the assembly structure comprises a sensor shell (4), a PCB module (5), a cover plate (1) and a pressure chip (6), wherein an oil inlet hole (7) is formed in the cover plate (1), the PCB module (5) is installed between the sensor shell (4) and the cover plate (1), the pressure chip (6) is fixedly installed on the PCB module (5), and the PCB module (5) is welded on the sensor shell (4); be equipped with two at least buckles (2) at apron (1) and sensor housing (4) connection position, correspond on sensor housing (4) and be equipped with two at least draw-in grooves (3), apron (1) and sensor housing (4) are through buckle (2) and draw-in groove (3) joint to be equipped with some glue groove (8) at apron (1) and sensor housing (4) butt joint face, behind apron (1) and sensor housing (4) joint, pack glue in some glue groove (8) and form viscose surface (10).

2. The assembling structure of a plastic-shelled oil pressure sensor according to claim 1, characterized in that: the number of the buckles (2) is four, and two of the four buckles are symmetrically distributed on the covering surface of the cover plate (1) and the sensor shell (4) in a group; four clamping grooves (3) are correspondingly arranged on the covering surface of the sensor shell (4).

3. The assembling structure of a plastic-shelled oil pressure sensor according to claim 1, characterized in that: the dispensing groove (8) is a U-shaped groove, a boss (9) matched with the U-shaped dispensing groove (8) is correspondingly arranged on the sensor shell (4), and after the cover plate (1) is clamped with the sensor shell (4), the boss (9) on the sensor shell (4) is correspondingly embedded into the U-shaped dispensing groove (8) on the cover plate (1) and is bonded through glue.

4. The assembling structure of a plastic-shelled oil pressure sensor according to claim 1, characterized in that: the cover face of the cover plate (1) is embedded into the cover face of the sensor shell (4) and is clamped with the clamping groove (3) through the buckle (2).