CN218330407U - Pressure sensor electrical connector and pressure sensor - Google Patents

Abstract

The utility model discloses a pressure sensor electric connector and pressure sensor. The pressure sensor electrical connector includes: a metal shell; a circuit board mounted in the metal case; and a plurality of terminals disposed in the metal case and electrically connected to the circuit board. A raised electrical contact is provided on the circuit board, the electrical contact being in electrical contact with the metal shell such that the circuit board is electrically connected to the metal shell via the electrical contact. The utility model discloses in, the circuit board electricity in the pressure sensor electric connector is connected to the metal casing to pressure sensor's ground connection performance has been improved.

Description

Pressure sensor electrical connector and pressure sensor

Technical Field

The utility model relates to a pressure sensor electric connector and including pressure sensor of this pressure sensor electric connector.

Background

In the prior art, pressure sensors are of various types and have great differences in structure and performance. In special fields such as rail transit, the grounding performance of the pressure sensor has very high requirements. However, the conventional pressure sensor has difficulty in satisfying such a requirement.

In addition, the pressure diaphragm of the pressure sensor is usually easily damaged, and on one hand, the measured medium contains impurities such as metal debris, and the impurities can damage the pressure diaphragm. On the other hand, the measured medium generates water hammer effect to generate high pressure instantaneously, thereby destroying the pressure diaphragm.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to solve at least one of the above problems and drawbacks existing in the prior art.

According to an aspect of the present invention, there is provided a pressure sensor electrical connector, including: a metal shell; a circuit board mounted in the metal case; and a plurality of terminals provided in the metal case and electrically connected to the circuit board. A raised electrical contact is provided on the circuit board, the electrical contact being in electrical contact with the metal shell such that the circuit board is electrically connected to the metal shell via the electrical contact.

According to an exemplary embodiment of the present invention, the electrical contact part includes a plurality of arc contact parts spaced apart in a circumferential direction, the plurality of arc contact parts being in electrical contact with the metal shell.

According to another exemplary embodiment of the present invention, a conductive trace electrically interconnecting the plurality of arc-shaped contacts to each other is formed on the circuit board.

According to another exemplary embodiment of the present invention, the circuit board is circular, and the plurality of arc-shaped contact portions are formed on the top surface of the circuit board and are evenly spaced around the periphery of the circuit board.

According to another exemplary embodiment of the present invention, the metal shell is formed at an inner side thereof with an annular positioning step, and the plurality of arc-shaped contact portions are abutted against the annular positioning step to be electrically contacted with the metal shell.

According to another exemplary embodiment of the present invention, the plurality of terminals includes a ground terminal electrically connected with the metal shell such that the circuit board is electrically connected to the metal shell via the ground terminal; and the other terminals of the plurality of terminals except the ground terminal are electrically isolated from the metal case.

According to another exemplary embodiment of the present invention, a conductive trace electrically interconnecting the ground terminal and the electrical contact portion to each other is formed on the circuit board.

According to another exemplary embodiment of the present invention, the metal shell comprises a circumferential wall enclosing an inner cavity and a partition wall dividing the inner cavity into a first cavity and a second cavity; the circuit board is mounted in the first cavity with the plurality of terminals passing through the partition wall; the ground terminal is welded or riveted to a partition wall of the metal shell, and the other terminals are electrically isolated from the partition wall.

According to another exemplary embodiment of the present invention, the pressure sensor electrical connector further comprises a first insulating member provided in the first cavity of the metal shell for fixing the plurality of terminals and electrically isolating the other terminals from the partition wall.

According to another exemplary embodiment of the present invention, the pressure sensor electrical connector further comprises a second insulator, the second insulator being mounted in the second cavity of the metal shell, the plurality of terminals being fixed to the second insulator.

According to another exemplary embodiment of the present invention, the second insulator is an integral injection molded part formed by an insert injection molding process; upon injection molding the second insulator, the plurality of terminals are inserts and the second insulator is injection molded such that the second insulator directly engages the plurality of terminals.

According to another exemplary embodiment of the present invention, one end of the metal shell is used for being butted with a housing of a pressure detection device of a pressure sensor, and the other end of the metal shell is used for being butted with a housing of an electrical connection socket; and a thread for screwing with the shell of the electric connection seat is formed on the other end of the metal shell.

According to another exemplary embodiment of the present invention, a plurality of terminal insertion holes are formed on the circuit board, and the plurality of terminals are respectively inserted and welded into the plurality of terminal insertion holes to be electrically connected with the circuit board.

According to another aspect of the present invention, there is provided a pressure sensor, including: pressure detection device and pressure sensor electrical connector. The pressure detection device includes: a housing having a first port and a second port opposite in an axial direction thereof; and a pressure detection module disposed in the housing for detecting a pressure of an external medium. One end of the metal shell is in butt joint with the first port of the shell, and the circuit board is electrically connected with the pressure detection module.

According to the utility model discloses an exemplary embodiment, the pressure detection module includes: the module body is provided with an accommodating cavity for accommodating internal media; a pressure diaphragm mounted on an opening of the receiving cavity of the module body for transmitting a pressure of an external medium to an internal medium; a pressure detection chip mounted in the module body for detecting a pressure of the internal medium; and a sealing cover mounted on the other opening of the receiving cavity of the module body to seal the other opening.

According to another exemplary embodiment of the present invention, the pressure sensor further comprises a pressure joint. The pressure joint includes: a peripheral wall enclosing a cavity; a bottom wall connected to a bottom of the peripheral wall; and a connecting portion connected to the bottom wall and formed with a passage. A communication hole communicating the cavity and the channel is formed on the bottom wall so that an external medium can flow from the channel into the cavity via the communication hole; the pressure joint is connected to the pressure detection device, and the pressure diaphragm is located in the cavity and used for transmitting the pressure of the external medium in the cavity to the internal medium.

According to another exemplary embodiment of the present invention, the circumferential wall of the pressure connection is inserted into and butts against a second port of the housing of the pressure detection device; one end of the module body is inserted into the cavity of the pressure joint and is butted with the pressure joint.

According to another exemplary embodiment of the present invention, the channel comprises: a central bore; and an annular groove formed at one end of the central hole. The central hole is communicated with the communication hole through the annular groove, and the inner diameter of the annular groove is larger than that of the central hole, so that the axial section of the channel is in a T shape.

According to another exemplary embodiment of the present invention, the communication hole is adjacent to a peripheral wall of the cavity, and a size of a through opening between the communication hole and the annular groove is smaller than a diameter of the communication hole; the size of the through opening is set to a predetermined value so as to block impurities in the external medium from entering the cavity.

According to another exemplary embodiment of the present invention, a plurality of communication holes are formed on the bottom wall, the plurality of communication holes being spaced apart in a circumferential direction and communicating with the annular groove.

According to another exemplary embodiment of the present invention, a threaded portion for threaded connection with a device to be tested is formed on the connecting portion, the pressure joint further includes a flange portion connected to an outer side of the peripheral wall, the flange portion being adapted to abut against a mounting panel of the device to be tested; a packing installation groove for installing a packing is formed on a bottom surface of the flange portion, and the packing is adapted to be pressed between the flange portion and the installation panel to achieve sealing therebetween.

According to another exemplary embodiment of the present invention, the pressure detection module further comprises: the signal processing circuit is used for processing the pressure signal detected by the pressure detection chip; and a first connector electrically connecting the pressure detection chip to the signal processing circuit. The first connector includes: a first insulating body disposed between the signal processing circuit and the sealing cover; and a plurality of first connection terminals fixed to the first insulating body and penetrating through the sealing cover for electrically connecting the pressure detection chip and the signal processing circuit.

According to another exemplary embodiment of the present invention, the pressure detection module further comprises: a flexible electrical connector, one end of which is electrically connected with the signal processing circuit; and a second connector connected to the other end of the flexible electrical connector and electrically connected to the circuit board. The second connector includes: a second dielectric body secured to the other end of the flexible electrical connector; and a plurality of second connection terminals fixed to the second insulating body for electrically connecting the signal processing circuit and the circuit board.

According to another exemplary embodiment of the present invention, the flexible electrical connector is a flexible flat cable or a flexible printed circuit board.

According to another exemplary embodiment of the present invention, the signal processing circuit includes a plurality of circuit boards that are distributed at intervals in an axial direction of the housing and electrically connected to each other; the plurality of circuit boards includes at least: a first circuit board electrically connected to the first connection terminal; and a second circuit board electrically connected to one end of the flexible electrical connector.

In each of the foregoing exemplary embodiments according to the present invention, the circuit board in the pressure sensor electrical connector is electrically connected to the metal shell, thereby improving the grounding performance of the pressure sensor.

Furthermore, in some exemplary embodiments of the present invention, the pressure joint of the pressure sensor can protect the pressure diaphragm from being damaged by impurities such as metal chips in the external medium to be detected, and can protect the pressure diaphragm from being affected by instantaneous high pressure.

Other objects and advantages of the present invention will become apparent from the following description of the invention, which is made with reference to the accompanying drawings, and can help to provide a thorough understanding of the present invention.

Drawings

Fig. 1 shows a schematic perspective view of a pressure sensor according to an exemplary embodiment of the present invention;

fig. 2 shows an exploded schematic view of a pressure sensor according to an exemplary embodiment of the present invention;

fig. 3 shows an axial cross-sectional view of a pressure sensor according to an exemplary embodiment of the present invention;

fig. 4 shows an axial cross-sectional view of a pressure detection arrangement of a pressure sensor according to an exemplary embodiment of the present invention;

fig. 5 shows an axial cross-sectional view of a pressure sensor electrical connector according to an exemplary embodiment of the present invention;

fig. 6 shows an exploded schematic view of a pressure sensor electrical connector according to an exemplary embodiment of the present invention;

fig. 7 shows a schematic perspective view of a circuit board of a pressure sensor electrical connector according to an exemplary embodiment of the present invention;

fig. 8 shows a schematic perspective view of a pressure joint of a pressure sensor according to an exemplary embodiment of the present invention;

fig. 9 shows an axial cross-sectional view of a pressure joint of a pressure sensor according to an exemplary embodiment of the present invention.

Detailed Description

The technical solution of the present invention is further specifically described below by way of embodiments and with reference to the accompanying drawings. In the specification, the same or similar reference numerals denote the same or similar components. The following description of the embodiments of the invention with reference to the drawings is intended to explain the general inventive concept and should not be taken as a limitation of the invention.

Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in diagram form to simplify the drawing.

According to the utility model discloses a general technical concept provides a pressure sensor electric connector, include: a metal shell; a circuit board mounted in the metal case; and a plurality of terminals provided in the metal case and electrically connected to the circuit board. A raised electrical contact is provided on the circuit board, the electrical contact being in electrical contact with the metal shell such that the circuit board is electrically connected to the metal shell via the electrical contact.

According to another general technical concept of the present invention, there is provided a pressure sensor, including: pressure detection device and pressure sensor electrical connector. The pressure detection device includes: a housing having a first port and a second port opposite in an axial direction thereof; and a pressure detection module disposed in the housing for detecting a pressure of an external medium. One end of the metal shell is in butt joint with the first port of the shell, and the circuit board is electrically connected with the pressure detection module.

Fig. 1 shows a schematic perspective view of a pressure sensor according to an exemplary embodiment of the present invention; fig. 2 shows an exploded schematic view of a pressure sensor according to an exemplary embodiment of the present invention; fig. 3 shows an axial cross-sectional view of a pressure sensor according to an exemplary embodiment of the present invention.

As shown in fig. 1 to 3, in the illustrated embodiment, the pressure sensor mainly includes a pressure detection device 3, a pressure sensor electrical connector 1, and a pressure connector 2. The pressure sensor electrical connector 1 is used to electrically connect the pressure detecting device 3 to a control system to transmit a detected pressure signal to the control system. The pressure joint 2 is used to connect the pressure detection device 3 to the device under test, so as to transmit the pressure medium (or referred to as external medium) in the device under test to the pressure detection device 3.

Fig. 4 shows an axial cross-sectional view of a pressure detection device 3 of a pressure sensor according to an exemplary embodiment of the present invention; fig. 5 shows an axial cross-sectional view of a pressure sensor electrical connector 1 according to an exemplary embodiment of the present invention; fig. 6 shows an exploded schematic view of a pressure sensor electrical connector 1 according to an exemplary embodiment of the present invention; fig. 7 shows a schematic perspective view of the circuit board 12 of the pressure sensor electrical connector 1 according to an exemplary embodiment of the present invention.

As shown in fig. 1 to 7, in one exemplary embodiment of the present invention, a pressure sensor electrical connector 1 is disclosed. The pressure sensor electric connector 1 includes: a metal case 11, a circuit board 12, and a plurality of terminals 131, 132, 133. The circuit board 12 is mounted in the metal case 11. A plurality of terminals 131, 132, 133 are provided in the metal shell 11 and electrically connected to the circuit board 12. A raised electrical contact 122 is provided on the circuit board 12, the electrical contact 122 being in electrical contact with the metal shell 11, so that the circuit board 12 is electrically connected to the metal shell 11 via the electrical contact 122. Thus, the grounding performance of the circuit board 12 can be improved.

As shown in fig. 1 to 7, in the illustrated embodiment, the electrical contact part 122 includes a plurality of arc-shaped contact parts 122 'spaced apart in the circumferential direction, and the plurality of arc-shaped contact parts 122' are electrically contacted with the metal shell 11.

As shown in fig. 1-7, in the illustrated embodiment, conductive traces (not shown) are formed on the circuit board 12 that electrically interconnect the plurality of arcuate contact portions 122' to one another. Thus, the grounding performance of the circuit board 12 can be further improved.

As shown in fig. 1-7, in the illustrated embodiment, the circuit board 12 is circular in shape, and a plurality of arcuate contact portions 122' are formed on the top surface of the circuit board 12 and are evenly spaced around the periphery of the circuit board 12.

As shown in fig. 1 to 7, in the illustrated embodiment, an annular positioning step 111a is formed on the inner side of the metal shell 11, and a plurality of arc-shaped contact portions 122' abut on the annular positioning step 111a to be electrically contacted with the metal shell 11.

As shown in fig. 1-7, in the illustrated embodiment, the plurality of terminals 131, 132, 133 includes a ground terminal 131. The ground terminal 131 is electrically connected to the metal case 11 so that the circuit board 12 is electrically connected to the metal case 11 via the ground terminal 131. Thus, the grounding performance of the circuit board 12 can be further improved.

As shown in fig. 1 to 7, in the illustrated embodiment, the other terminals 132, 133 than the ground terminal 131 among the plurality of terminals 131, 132, 133 are electrically isolated from the metal shell 11. In the illustrated embodiment, the other terminals 132, 133 include a power terminal 132 and a pair of signal terminals 133.

As shown in fig. 1 to 7, in the illustrated embodiment, conductive traces (not shown) that electrically interconnect the ground terminals 131 and the electrical contacts 122 to each other are formed on the circuit board 12. Thus, the grounding performance of the circuit board 12 can be further improved.

As shown in fig. 1 to 7, in the illustrated embodiment, the metal shell 11 includes a peripheral wall 111 that encloses an inner cavity and a partition wall 112 that partitions the inner cavity into the first chamber 101 and the second chamber 102. The circuit board 12 is mounted in the first cavity 101 with the plurality of terminals 131, 132, 133 passing through the partition wall 112. The ground terminal 131 is welded or riveted to the partition wall 112 of the metal shell 11, and the other terminals 132, 133 are electrically isolated from the partition wall 112.

As shown in fig. 1-7, in the illustrated embodiment, the pressure sensor electrical connector 1 further includes a first insulator 15. The first insulating member 15 is disposed in the first cavity 101 of the metal shell 11 for fixing the plurality of terminals 131, 132, 133 and electrically isolating the other terminals 132, 133 from the partition wall 112. In the illustrated embodiment, a portion of the first insulating member 15 is inserted into the gap between the other terminal 132, 133 and the partition wall 112, so that the other terminal 132, 133 is electrically isolated from the partition wall 112. In an exemplary embodiment of the present invention, the first insulating member 15 may be formed of epoxy resin poured into the first cavity 101 of the metal shell 11.

As shown in fig. 1 to 7, in the illustrated embodiment, the pressure sensor electrical connector 1 further includes a second insulating member 14. The second insulating member 14 is installed in the second cavity 102 of the metal case 11, and the plurality of terminals 131, 132, 133 are fixed to the second insulating member 14.

As shown in fig. 1-7, in the illustrated embodiment, the second insulator 14 is a one-piece injection molded part formed by an insert injection molding process. When the second insulating member 14 is injection molded, the plurality of terminals 131, 132, 133 are insert members, and the second insulating member 14 is injection molded such that the second insulating member 14 is directly engaged with the plurality of terminals 131, 132, 133.

As shown in fig. 1 to 7, in the illustrated embodiment, one end of the metal shell 11 is used for being abutted with the housing 31 of the pressure detection device 3 of the pressure sensor, and the other end 113 of the metal shell 11 is used for being abutted with the housing of the electrical connection socket (not illustrated); a screw 113a for screwing with a housing of an electric connection socket is formed on the other end 113 of the metal shell 11.

As shown in fig. 1 to 7, in the illustrated embodiment, a plurality of terminal insertion holes 121 are formed on the circuit board 12, and a plurality of terminals 131, 132, 133 are inserted and soldered into the plurality of terminal insertion holes 121, respectively, to be electrically connected to the circuit board 12.

As shown in fig. 1 to 7, in another exemplary embodiment of the present invention, a pressure sensor is also disclosed. The pressure sensor includes: a pressure detection device 3 and the aforementioned pressure sensor electrical connector 1. The pressure detection device 3 includes: a housing 31 and a pressure detection module. The housing 31 has a first port 311 and a second port 312 opposite in the axial direction thereof. The housing 31 is made of metal. A pressure detection module is provided in the housing 31 for detecting the pressure of the external medium. One end of the metal shell 11 is butted with the first port 311 of the housing 31, and the circuit board 12 is electrically connected with the pressure detection module.

As shown in fig. 1 to 7, in the illustrated embodiment, the pressure detection module includes: a module body 32 formed with a housing cavity 32a for housing an internal medium; a pressure membrane 321 mounted on one opening (bottom opening in the drawing) of the accommodation chamber 32a of the module body 32 for transmitting the pressure of the external medium to the internal medium; a pressure detecting chip (not shown), which is a micro electro mechanical device, installed in the module body 32 for detecting the pressure of the internal medium; and a sealing cover 35 mounted on the other opening (the top opening in the drawing) of the receiving cavity of the module body 32 to seal the other opening. In the illustrated embodiment, the pressure detection module further includes a weld ring 322. The welding ring 322 welds the peripheral portion of the pressure diaphragm 321 to the module body 32.

Fig. 8 shows a schematic perspective view of a pressure joint 2 of a pressure sensor according to an exemplary embodiment of the present invention; fig. 9 shows an axial cross-sectional view of a pressure joint 2 of a pressure sensor according to an exemplary embodiment of the invention.

As shown in fig. 1 to 9, in the illustrated embodiment, the pressure sensor further comprises a pressure joint 2. The pressure joint 2 includes: a peripheral wall 21 enclosing a cavity 201; a bottom wall 22 connected to the bottom of the peripheral wall 21; and a connecting portion 23 connected to the bottom wall 22 and formed with a passage 203. A communication hole 202 communicating the cavity 201 and the channel 203 is formed on the bottom wall 22 so that the external medium can flow from the channel 203 into the cavity 201 via the communication hole 202.

As shown in fig. 1 to 9, in the illustrated embodiment, the pressure connector 2 is connected to a pressure detection device 3, and a pressure diaphragm 321 is located in the cavity 201 for transmitting the pressure of the external medium in the cavity 201 to the internal medium.

As shown in fig. 1 to 9, in the illustrated embodiment, the peripheral wall 21 of the pressure joint 2 is inserted into the second port 312 of the housing 31 of the pressure detection device 3 and is butted against the second port 312. One end of the module body 32 is inserted into the cavity 201 of the pressure fitting 2 and abuts the pressure fitting 2.

As shown in fig. 1-9, in the illustrated embodiment, the channel 203 includes: a central bore 203a and an annular groove 203b. An annular groove 203b is formed at one end of the central hole 203 a. The center hole 203a communicates with the communication hole 202 via an annular groove 203b, the annular groove 203b having a larger inner diameter than the center hole 203a, so that the passage 203 has a T-shaped axial cross section. Therefore, the external medium flows into the cavity 201 along the curved path of the T-shape, so that the pressure impact of the external medium on the pressure diaphragm 321 can be reduced, and the pressure diaphragm 321 can be prevented from being damaged due to the pressure impact.

As shown in fig. 1 to 9, in the illustrated embodiment, the communication hole 202 is adjacent to the peripheral wall 21 of the pressure joint 2, which can further reduce the pressure impact of the external medium on the pressure membrane 321.

As shown in fig. 1 to 9, in the illustrated embodiment, the size of the through-port 202a between the communication hole 202 and the annular groove 203b is smaller than the diameter of the communication hole 202. In the illustrated embodiment, the size of the through-hole 202a is smaller than a predetermined value to prevent impurities such as metal debris in the external medium from entering the cavity 201. Thus, the pressure diaphragm 321 can be prevented from being damaged by impurities such as metal debris in the external medium.

As shown in fig. 1 to 9, in the illustrated embodiment, a plurality of communication holes 202 are formed in the bottom wall 22, and the plurality of communication holes 202 are distributed at intervals in the circumferential direction and communicate with the annular groove 203b.

As shown in fig. 1 to 9, in the illustrated embodiment, a threaded portion 23a for screwing with the device to be detected is formed on the connecting portion 23, and the pressure joint 2 further includes a flange portion 24 connected to the outside of the peripheral wall 21, the flange portion 24 being adapted to abut against a mounting panel (not shown) of the device to be detected (not shown). A packing attachment groove 204 for attaching a packing (not shown) is formed on the bottom surface of the flange portion 24, and the packing is adapted to be pressed between the flange portion 24 and an attachment panel to achieve sealing therebetween.

As shown in fig. 1 to 9, in the illustrated embodiment, the pressure detection module further includes: a signal processing circuit 33 and first connectors 34, 34a. The signal processing circuit 33 is used for processing the pressure signal detected by the pressure detection chip. First connectors 34, 34a electrically connect the pressure detecting chip to the signal processing circuit 33. The first connector 34, 34a includes: a first insulating body 34 provided between the signal processing circuit 33 and the sealing cover 35; and a plurality of first connection terminals 34a fixed on the first insulating body 34 and passing through the sealing cap 35 for electrically connecting the pressure detecting chip and the signal processing circuit 33.

As shown in fig. 1 to 9, in the illustrated embodiment, the pressure detection module further includes: a flexible electrical connector 331 having one end electrically connected to the signal processing circuit 33; and a second connector 30, 30a connected to the other end of the flexible electrical connector 331 and electrically connected to the circuit board 12. The second connector 30, 30a includes: a second insulating body 30 fixed to the other end of the flexible electrical connector 331; and a plurality of second connection terminals 30a fixed to the second insulating body 30 for electrically connecting the signal processing circuit 33 and the circuit board 12. In the illustrated embodiment, the plurality of second connection terminals 30a are respectively inserted into the plurality of insertion holes 123 on the circuit board 12.

As shown in fig. 1-9, in the illustrated embodiment, the flexible electrical connector 331 may be a flexible flat cable or a flexible printed circuit board.

As shown in fig. 1 to 9, in the illustrated embodiment, the signal processing circuit 33 includes a plurality of circuit boards 33a, 33b that are distributed at intervals in the axial direction of the housing 31 and electrically connected to each other. The plurality of circuit boards 33a, 33b includes at least: a first circuit board 33b electrically connected to the first connection terminal 34 a; and a second circuit board 33a electrically connected to one end of the flexible electrical connector 331.

It is understood by those skilled in the art that the above described embodiments are exemplary and can be modified by those skilled in the art, and that the structures described in the various embodiments can be freely combined without conflict in structure or principle, and that these modifications are intended to fall within the scope of the present invention.

Although the present invention has been described in connection with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplify preferred embodiments of the present invention, and should not be construed as limiting the present invention.

Although a few embodiments of the present general inventive concept have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.

It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude a plurality. Additionally, any element numbers of the claims should not be construed as limiting the scope of the invention.

Claims (25)

1. A pressure sensor electrical connector, comprising:

a metal shell (11);

a circuit board (12) mounted in the metal case (11); and

a plurality of terminals (131, 132, 133) provided in the metal case (11) and electrically connected to the circuit board (12),

a raised electrical contact (122) is provided on the circuit board (12), the electrical contact (122) being in electrical contact with the metal housing (11) such that the circuit board (12) is electrically connected to the metal housing (11) via the electrical contact (122).

2. The pressure sensor electrical connector of claim 1, wherein:

the electrical contact part (122) comprises a plurality of arc-shaped contact parts (122 ') distributed at intervals in the circumferential direction, and the plurality of arc-shaped contact parts (122') are electrically contacted with the metal shell (11).

3. The pressure sensor electrical connector of claim 2, wherein:

conductive traces electrically interconnecting the plurality of arcuate contact portions (122') to one another are formed on the circuit board (12).

4. The pressure sensor electrical connector of claim 2, wherein:

the circuit board (12) is circular, and the plurality of arc-shaped contact portions (122') are formed on the top surface of the circuit board (12) and are evenly spaced around the periphery of the circuit board (12).

5. The pressure sensor electrical connector of claim 2, wherein:

an annular positioning step (111 a) is formed on the inner side of the metal shell (11), and the plurality of arc-shaped contact portions (122') abut on the annular positioning step (111 a) to be in electrical contact with the metal shell (11).

6. The pressure sensor electrical connector of any one of claims 1-5, wherein:

the plurality of terminals (131, 132, 133) include a ground terminal (131), the ground terminal (131) being electrically connected with the metal case (11) so that the circuit board (12) is electrically connected to the metal case (11) via the ground terminal (131); and is

The other terminals (132, 133) of the plurality of terminals (131, 132, 133) except for the ground terminal (131) are electrically isolated from the metal shell (11).

7. The pressure sensor electrical connector of claim 6, wherein:

conductive traces electrically interconnecting the ground terminal (131) and the electrical contact (122) to each other are formed on the circuit board (12).

8. The pressure sensor electrical connector of claim 6, wherein:

the metal shell (11) comprises a peripheral wall (111) enclosing an inner cavity and a partition wall (112) dividing the inner cavity into a first cavity (101) and a second cavity (102);

the circuit board (12) is mounted in the first cavity (101), the plurality of terminals (131, 132, 133) passing through the partition wall (112);

the ground terminal (131) is welded or riveted to a partition wall (112) of the metal shell (11), and the other terminals (132, 133) are electrically isolated from the partition wall (112).

9. The electrical pressure sensor connector of claim 8, further comprising:

a first insulating member (15) provided in the first cavity (101) of the metal shell (11) for fixing the plurality of terminals (131, 132, 133) and electrically isolating the other terminals (132, 133) from the partition wall (112).

10. The electrical pressure sensor connector of claim 8, further comprising:

a second insulator (14) mounted in a second cavity (102) of the metal shell (11),

the plurality of terminals (131, 132, 133) are fixed to the second insulating member (14).

11. The electrical pressure sensor connector of claim 10, wherein:

the second insulating part (14) is a one-piece injection molded part formed by an insert injection molding process;

the plurality of terminals (131, 132, 133) are inserts when the second insulator (14) is injection molded, and the second insulator (14) is injection molded such that the second insulator (14) directly engages the plurality of terminals (131, 132, 133).

12. The pressure sensor electrical connector of claim 1, wherein:

one end of the metal shell (11) is used for being butted with a shell (31) of a pressure detection device (3) of the pressure sensor, and the other end (113) of the metal shell (11) is used for being butted with a shell of the electric connection seat;

a screw thread (113 a) for screwing with a housing of the electrical connection socket is formed on the other end (113) of the metal shell (11).

13. The pressure sensor electrical connector of claim 1, wherein:

a plurality of terminal insertion holes (121) are formed on the circuit board (12), and the plurality of terminals (131, 132, 133) are inserted into and soldered to the plurality of terminal insertion holes (121), respectively, to be electrically connected to the circuit board (12).

14. A pressure sensor, comprising:

pressure detection device (3) comprising:

a housing (31) having a first port (311) and a second port (312) opposed in an axial direction thereof; and

a pressure detection module provided in the housing (31) for detecting a pressure of an external medium; and

the pressure sensor electrical connector (1) of any one of claims 1 to 13,

one end of the metal shell (11) is butted with a first port (311) of the shell (31), and the circuit board (12) is electrically connected with the pressure detection module.

15. The pressure sensor of claim 14, wherein:

the pressure detection module includes:

a module body (32) formed with a housing cavity (32 a) for housing an internal medium;

a pressure membrane 321 mounted on one opening of the receiving chamber 32a of the module body 32 for transmitting a pressure of an external medium to an internal medium;

a pressure detection chip mounted in the module body (32) for detecting a pressure of the internal medium; and

and a sealing cover (35) mounted on the other opening of the receiving cavity (32 a) of the module body (32) to seal the other opening.

16. The pressure sensor of claim 15, further comprising:

the pressure joint (2) comprises:

a peripheral wall (21) enclosing a cavity (201);

a bottom wall (22) connected to the bottom of the peripheral wall (21); and

a connecting portion (23) connected to the bottom wall (22) and formed with a channel (203), a communication hole (202) communicating the cavity (201) and the channel (203) being formed on the bottom wall (22) such that an external medium can flow from the channel (203) into the cavity (201) via the communication hole (202);

the pressure joint (2) is connected to the pressure detection device (3), and the pressure diaphragm (321) is positioned in the cavity (201) and used for transmitting the pressure of the external medium in the cavity (201) to the internal medium.

17. The pressure sensor of claim 16, wherein:

a peripheral wall (21) of the pressure joint (2) is inserted into a second port (312) of a housing (31) of the pressure detection device (3) and is butted with the second port (312);

one end of the module body (32) is inserted into the cavity (201) of the pressure joint (2) and is butted with the pressure joint (2).

18. The pressure sensor of claim 16, wherein:

the channel (203) comprises:

a central hole (203 a); and

an annular groove (203 b) formed at one end of the central hole (203 a),

the center hole (203 a) communicates with the communication hole (202) via the annular groove (203 b), the annular groove (203 b) having an inner diameter larger than that of the center hole (203 a) so that the passage (203) has a T-shaped axial cross-section.

19. The pressure sensor of claim 18, wherein:

the communication hole (202) is adjacent to the peripheral wall (21) of the cavity (201), and the size of a through opening (202 a) between the communication hole (202) and the annular groove (203 b) is smaller than the diameter of the communication hole (202);

the through opening (202 a) is dimensioned to a predetermined value to block impurities in the external medium from entering the cavity (201).

20. The pressure sensor of claim 18, wherein:

a plurality of communication holes (202) are formed in the bottom wall (22), and the plurality of communication holes (202) are distributed at intervals in the circumferential direction and communicate with the annular groove (203 b).

21. The pressure sensor of claim 16, wherein:

a threaded part (23 a) for being in threaded connection with the equipment to be detected is formed on the connecting part (23), the pressure joint (2) further comprises a flange part (24) connected with the outer side of the peripheral wall (21), and the flange part (24) is suitable for abutting against a mounting panel of the equipment to be detected;

a gasket mounting groove (204) for mounting a gasket is formed on the bottom surface of the flange portion (24), the gasket being adapted to be compressed between the flange portion (24) and the mounting panel to effect a seal therebetween.

22. The pressure sensor of claim 15, wherein:

the pressure detection module further comprises:

a signal processing circuit (33) for processing the pressure signal detected by the pressure detection chip; and

a first connector electrically connecting the pressure detection chip to the signal processing circuit (33),

the first connector includes:

a first insulating body (34) disposed between the signal processing circuit (33) and the sealing cover (35); and

and a plurality of first connection terminals (34 a) fixed to the first insulating body (34) and penetrating the sealing cover (35) for electrically connecting the pressure detecting chip and the signal processing circuit (33).

23. The pressure sensor of claim 22, wherein:

the pressure detection module further comprises:

a flexible electrical connector (331) electrically connected at one end to the signal processing circuit (33); and

a second connector connected to the other end of the flexible electrical connector (331) and electrically connected to the circuit board (12),

the second connector includes:

a second insulating body (30) fixed to the other end of said flexible electrical connector (331); and

a plurality of second connection terminals (30 a) fixed on the second insulating body (30) for electrically connecting the signal processing circuit (33) and the circuit board (12).

24. The pressure sensor of claim 23, wherein:

the flexible electric connector (331) is a flexible flat cable or a flexible printed circuit board.

25. The pressure sensor of claim 23, wherein:

the signal processing circuit (33) includes a plurality of circuit boards that are distributed at intervals in the axial direction of the housing (31) and are electrically connected to each other;

the plurality of circuit boards at least include:

a first circuit board (33 b) electrically connected to the first connection terminal (34 a); and

and a second circuit board (33 a) electrically connected with one end of the flexible electric connector (331).

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