CN219015524U

CN219015524U - Vacuum pressure sensor with plastic shell

Info

Publication number: CN219015524U
Application number: CN202223060583.6U
Authority: CN
Inventors: 吴东兴; 王晶; 艾智能; 杜东豫; 张建森
Original assignee: Ningbo New Strongteck Electrical Technology Shares Ltd
Current assignee: Ningbo New Strongteck Electrical Technology Shares Ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-05-12
Anticipated expiration: 2032-11-17

Abstract

The utility model provides a vacuum pressure sensor with a plastic shell, which belongs to the technical field of pressure detection and comprises: the plastic shell is provided with an installation cavity, a pressure collecting pipe and an interface are integrally formed on the plastic shell, the pressure collecting pipe is provided with an air inlet, and the air inlet is communicated with the installation cavity; the base is fixedly arranged in the mounting cavity; the circuit board is arranged in the mounting cavity and riveted on the base through rivets, pins are arranged on the circuit board, and the pins penetrate into the interface. The beneficial effects of the utility model are as follows: the vacuum pressure sensor is simple and reliable in structure, the pressure collecting pipe, the connector and the plastic shell are integrally formed, the circuit board is reliably fixed in the plastic shell in a hot riveting mode, so that parts are fewer, the assembly is convenient, the tightness can be well ensured, and leakage is avoided.

Description

Vacuum pressure sensor with plastic shell

Technical Field

The utility model belongs to the technical field of pressure detection, and relates to a vacuum pressure sensor with a plastic shell.

Background

The vacuum pressure sensor is a pressure sensor commonly used in industrial practice and is commonly used for detecting the air pressure in an automobile; for example, an utility model patent with application number CN201821646559.1 discloses a vacuum pressure sensor, which comprises a pipeline provided with a channel, a fixing seat connected with the pipeline and provided with a containing cavity, and a connecting end connected with the fixing seat and provided with an inserting port. The vacuum pressure sensor further comprises a pressure chip arranged in the accommodating cavity, a communication part for communicating the channel with the accommodating cavity, a stop part which is arranged in the pipeline and provided with a connecting hole, and a valve plate which is matched with the stop part to open or close the connecting hole.

Most of the existing vacuum pressure sensors actually consist of a shell, a pressure collecting pipe and a pressure sensing element, so that parts are relatively more, tightness is difficult to ensure during assembly, and leakage risks exist.

Disclosure of Invention

The object of the present utility model is to solve the above-mentioned problems of the prior art and to provide a vacuum pressure sensor with a plastic housing.

The aim of the utility model can be achieved by the following technical scheme: a vacuum pressure sensor having a plastic housing, comprising:

the plastic shell is provided with an installation cavity, a pressure collecting pipe and an interface are integrally formed on the plastic shell, the pressure collecting pipe is provided with an air inlet, and the air inlet is communicated with the installation cavity;

the base is fixedly arranged in the mounting cavity;

the circuit board is arranged in the mounting cavity and riveted on the base through rivets, pins are arranged on the circuit board, and the pins penetrate into the interface.

Preferably, the mounting cavity is provided with an opening positioned at the top of the plastic shell, the plastic shell is provided with a box cover for covering the opening, pouring sealant is arranged between the box cover and the plastic shell, and the box cover and the plastic shell are sealed through the pouring sealant.

Preferably, the connection part between the pin and the circuit board is covered with glue.

Preferably, a sealant is arranged between the base and the plastic shell.

Preferably, the plastic shell is provided with a circle of groove surrounding the opening, the box cover is provided with a circle of flanging, the flanging is inserted into the groove, and the pouring sealant is poured into the groove.

Preferably, the opening and the air inlet are respectively located above and below the mounting cavity.

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

1. the vacuum pressure sensor is simple and reliable in structure, the pressure collecting pipe, the connector and the plastic shell are integrally formed, the circuit board is reliably fixed in the plastic shell in a hot riveting mode, so that parts are fewer, the assembly is convenient, the tightness can be well ensured, and leakage is avoided.

2. Placing the circuit board through the opening and riveting; in order to ensure the tightness of the inside of the plastic shell, after the assembly is completed, the top of the plastic shell is covered with a box cover so as to seal the opening, and then pouring sealant is poured, so that the box cover and the top of the plastic shell can be connected together, and the sealing effect can be achieved.

3. The joint of the base and the plastic shell is coated with a circle of sealant, so that the base and the plastic shell can be reliably fixed together, the base and the plastic shell are kept sealed, and the tightness of the plastic shell is further improved.

Drawings

Fig. 1 is a schematic structural view of a vacuum pressure sensor according to the present utility model.

Fig. 2 is a side view of the vacuum pressure sensor of the present utility model.

Fig. 3 is a schematic top view of the vacuum pressure sensor of the present utility model.

100, a plastic housing; 110. a mounting cavity; 120. a pressure collecting pipe; 130. an interface; 140. an air inlet hole; 150. an opening; 160. a groove; 200. a base; 210. sealing glue; 300. a circuit board; 310. glue; 320. pins; 400. a rivet; 500. a box cover; 510. pouring sealant; 520. and (5) flanging.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1-3, a vacuum pressure sensor having a plastic housing, comprising: the plastic housing 100, the base 200 and the circuit board 300, wherein the plastic housing 100 is provided with a mounting cavity 110, the plastic housing 100 is integrally provided with a pressure collecting pipe 120 and an interface 130, the pressure collecting pipe 120 is provided with an air inlet hole 140, and the air inlet hole 140 is communicated with the mounting cavity 110; the base 200 is fixedly arranged in the mounting cavity 110; the circuit board 300 is disposed in the mounting cavity 110 and riveted to the base 200 by rivets 400, pins 320 are disposed on the circuit board 300, and the pins 320 penetrate into the interface 130.

It should be noted that, the housing of the vacuum pressure sensor is a plastic part, the plastic housing 100 with the pressure collecting tube 120 and the interface 130 is integrally formed by injection molding, wherein, the interface 130 and the mounting cavity 110 are provided with a solid part barrier, only a through hole for the pin 320 to pass through is reserved, when the vacuum pressure sensor is mounted, the circuit board 300 is placed into the mounting cavity 110, and the pin 320 is inserted into the interface 130 through the through hole, the base 200 is fixed with the bottom surface of the mounting cavity 110, the circuit board 300 is connected with the base 200 through the rivet 400, so that the circuit board 300 is very reliably fixed in the mounting cavity 110 of the plastic housing 100, and in a practical structure, the circuit board 300 and the base 200 are riveted together through heat riveting, and the structure adopts the integral plastic housing 100 and is provided with the pressure collecting tube 120 and the interface 130, so that the tightness is very good, and the reliability is very high because the circuit board 300 inside is riveted in the plastic housing 100.

The vacuum pressure sensor has the advantages that the structure is simple and reliable, the pressure collecting pipe 120, the interface 130 and the plastic shell 100 are integrally formed, the circuit board 300 is reliably fixed in the plastic shell 100 in a hot riveting mode, so that parts are fewer, the assembly is convenient, the tightness can be well ensured, and leakage is avoided.

Preferably, the mounting cavity 110 has an opening 150 at the top of the plastic housing 100, a cap 500 covering the opening 150 is provided on the plastic housing 100, a potting compound 510 is provided between the cap 500 and the plastic housing 100, and the cap 500 and the plastic housing 100 are sealed by the potting compound 510.

The plastic housing 100 has an opening 150 at the top, i.e., the plastic housing 100 is not closed prior to assembly, and the circuit board 300 can be placed through the opening 150 and riveted; in order to ensure the sealability of the inside of the plastic case 100, it is necessary to cover the top of the plastic case 100 with the cap 500 to close the opening 150 and then fill the potting compound 510 after the assembly is completed, so that not only the cap 500 is coupled to the top of the plastic case 100, but also a sealing effect can be achieved.

Preferably, the connection between the pins 320 and the circuit board 300 is covered with glue 310. Specifically, the pins 320 and the circuit board 300 are welded and fixed by soldering tin, the glue 310 is coated at the connection part of the pins and the circuit board, and the glue 310 can protect components, prevent the components from falling off and prevent the components from water inflow.

As shown in fig. 1, a sealant 210 is disposed between the base 200 and the plastic housing 100. In a practical structure, a circle of sealant 210 is coated at the joint of the base 200 and the plastic housing 100, so that the base 200 and the plastic housing 100 can be reliably fixed together, and the sealing between the base and the plastic housing 100 is kept, and the sealing performance of the plastic housing 100 is further improved.

As shown in fig. 1 and 3, the plastic case 100 is provided with a turn of the groove 160 surrounding the opening 150, the cap 500 is provided with a turn of the flange 520, the flange 520 is inserted into the groove 160, and the potting compound 510 is poured into the groove 160. The groove 160 and the flanging 520 form an inserting structure, and then pouring sealant 510 is poured into the groove 160, so that a better sealing effect can be formed.

Preferably, the opening 150 and the air intake hole 140 are respectively located above and below the mounting cavity 110.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions such as those referred to herein as "first," "second," "a," and the like are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or an implicit indication of the number of features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.

Claims

1. A vacuum pressure sensor having a plastic housing, comprising:

the plastic shell (100), the plastic shell (100) is provided with an installation cavity (110), a pressure collecting pipe (120) and an interface (130) are integrally formed on the plastic shell (100), the pressure collecting pipe (120) is provided with an air inlet hole (140), and the air inlet hole (140) is communicated with the installation cavity (110);

the base (200) is fixedly arranged in the mounting cavity (110);

the circuit board (300), circuit board (300) set up in installation cavity (110) and rivet through rivet (400) be in on base (200), be provided with pin (320) on circuit board (300), and pin (320) wears to establish in interface (130).

2. A vacuum pressure sensor having a plastic housing as recited in claim 1, wherein: the mounting cavity (110) is provided with an opening (150) positioned at the top of the plastic shell (100), the plastic shell (100) is provided with a box cover (500) covering the opening (150), pouring sealant (510) is arranged between the box cover (500) and the plastic shell (100), and the box cover (500) and the plastic shell (100) are sealed through the pouring sealant (510).

3. A vacuum pressure sensor having a plastic housing as recited in claim 1, wherein: the connection part of the pin (320) and the circuit board (300) is covered with glue (310).

4. A vacuum pressure sensor having a plastic housing as recited in claim 1, wherein: and a sealant (210) is arranged between the base (200) and the plastic shell (100).

5. A vacuum pressure sensor having a plastic housing as recited in claim 2, wherein: the plastic shell (100) is provided with a circle of grooves (160) surrounding the opening (150), the box cover (500) is provided with a circle of flanging (520), the flanging (520) is inserted into the grooves (160), and the pouring sealant (510) is poured into the grooves (160).

6. A vacuum pressure sensor having a plastic housing as recited in claim 5, wherein: the opening (150) and the air inlet (140) are respectively located above and below the mounting cavity (110).