CN213068040U - Pressure sensor - Google Patents
Pressure sensor Download PDFInfo
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- CN213068040U CN213068040U CN202022575511.XU CN202022575511U CN213068040U CN 213068040 U CN213068040 U CN 213068040U CN 202022575511 U CN202022575511 U CN 202022575511U CN 213068040 U CN213068040 U CN 213068040U
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- pressure
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Abstract
The utility model provides a pressure sensor, include: one end of the pressure inlet head is provided with a mounting groove, the other end of the pressure inlet head is provided with a medium inlet, and the medium inlet extends inwards and is communicated with the mounting groove; the circuit board is arranged on the end face of the pressure inlet head, which is provided with the mounting groove, and covers the mounting groove; the sensor core body includes base, pressure sensing element and a plurality of guide pin, and the base is located in the mounting groove, and the guide pin passes the base, and the bottom of base is extended to the bottom of guide pin, and the top of base is extended and with circuit board electric connection to the top of guide pin, and the bottom of guide pin is located to pressure sensing element, and pressure sensing element sets up with the medium entry relatively. The mode does not need to use a shell and occupy the space outside the pressure inlet head, thereby greatly reducing the volume of the pressure sensor and facilitating the installation of the pressure sensor.
Description
Technical Field
The utility model relates to a sensor assembly manufacturing technical field, in particular to pressure sensor.
Background
The sensor, as a kind of detecting device, can sense the information of the person to be measured, and can convert the sensed information into an electric signal or other information output in a required form according to a certain rule, so as to meet the requirements of information transmission, processing, storage, display, recording, control and the like. With the continuous progress of society and the continuous development of scientific technology, the application field of the sensor in daily life is more and more extensive, and the sensor is more and more developed towards the direction of miniaturization, multi-functionalization, systematization and the like.
In the field of existing sensors, a pressure sensor is one of important sensors, and pressure sensors have an important role in the fields of automobiles, industries, and the like. In the prior art, pressure sensors are widely used, for example, a fire extinguisher detects a pressure signal to control flow, an air compressor measures gas pressure to feed back a system to control pressure and safety, and the like, which all reflect the importance of the sensor.
The existing pressure sensor generally comprises a pressure inlet head, a shell and a sensor core body, wherein the sensor core body is arranged on the pressure inlet head through the shell, so that the existing pressure sensor is large in size and not beneficial to the installation of the pressure sensor.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims at providing a pressure sensor to solve the bulky problem of prior art pressure sensor.
A pressure sensor, comprising:
the device comprises a pressure inlet head, a pressure outlet head and a pressure control valve, wherein one end of the pressure inlet head is provided with a mounting groove, the other end of the pressure inlet head is provided with a medium inlet, and the medium inlet extends inwards and is communicated with the mounting groove;
the circuit board is arranged on the end face of the pressure inlet head, wherein the mounting groove is formed in the end face, and the circuit board covers the mounting groove;
the sensor core body comprises a base, a pressure sensitive element and a plurality of guide pins, the base is arranged in the mounting groove, the guide pins penetrate through the base, the bottom ends of the guide pins extend out of the bottom of the base, the top ends of the guide pins extend out of the top of the base and are electrically connected with the circuit board, the pressure sensitive element is arranged at the bottom end of the guide pins, and the pressure sensitive element and the medium inlet are oppositely arranged.
The utility model has the advantages that: the mounting groove is formed in one end of the pressure inlet head, the medium inlet is formed in the other end of the pressure inlet head, and the mounting groove is communicated with the medium inlet. During the assembly, only need to install the base in the mounting groove, and with the relative setting of one side and the medium entry that pressure sensitive component was installed to the base, pass the guide pin with the circuit board again, and guide pin and circuit board electric connection, install the circuit board on the base at last to simple swift completion this pressure sensor's assembly. This pressure sensor directly installs the sensor core in the inside of advancing the pressure head, and this kind of mode need not use the shell, and need not occupy the outside space of advancing the pressure head to this pressure sensor's volume has been dwindled greatly, and made things convenient for this pressure sensor's installation, and this pressure sensor can bear the use of big pressure, is favorable to using widely on a large scale.
Preferably, the top end of the guide pin penetrates through the circuit board and is electrically connected with the circuit board.
Preferably, the circuit board is provided with a through hole, and the guide pin passes through the circuit board through the through hole.
Preferably, the through hole is a metal conductive hole, and the guide pin is electrically connected with the circuit board through the metal conductive hole.
Preferably, the guide pin is provided in a plurality, and each guide pin correspondingly passes through each through hole.
Preferably, the base is provided as a sintered base.
Preferably, the middle part of the base is provided with a containing hole, the containing hole is filled with an insulating medium, and the guide pin is fixed on the base through the insulating medium.
Preferably, a protective layer is filled between the guide pin and the pressure sensitive element.
Preferably, one side of the circuit board is provided with a signal output element and a conductive circuit, and the guide pin is electrically connected with the signal output element through the conductive circuit.
Preferably, a backing plate is arranged between the circuit board and the base.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a cross-sectional view of a pressure sensor according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a pressure sensor according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a sensor core body according to a first embodiment of the present invention;
fig. 4 is a cross-sectional view of a pressure sensor according to a second embodiment of the present invention.
Description of the main element symbols:
| |
10 | |
11 |
| |
12 | |
20 |
| |
30 | |
31 |
| Pressure |
32 | |
33 |
| Through |
21 | Containing |
311 |
| |
34 | |
22 |
| |
23 | |
40 |
The following detailed description of the invention will be further described in conjunction with the above-identified drawings.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 3, a pressure sensor according to a first embodiment of the present invention is shown,
wherein: the pressure sensor includes:
the device comprises a pressure inlet head 10, wherein one end of the pressure inlet head 10 is provided with a mounting groove 11, the other end of the pressure inlet head 10 is provided with a medium inlet 12, and the medium inlet 12 extends inwards and is communicated with the mounting groove 11;
the circuit board 20 is arranged on the end face, provided with the mounting groove 11, of the pressure inlet head 10, and the circuit board 20 covers the mounting groove 11;
the sensor core body 30, this sensor core body 30 includes base 31, pressure sensing element 32 and a plurality of guide pin 33, and the base 31 is located in mounting groove 11, and guide pin 33 passes base 31, and the bottom of base 31 is extended to the bottom of guide pin 33, and the top of guide pin 33 extends the top of base 31 and is connected with circuit board 20 electrical property, and pressure sensing element 32 locates the bottom of guide pin 33, and pressure sensing element 32 sets up with medium entry 12 relatively.
In this embodiment, as shown in fig. 1 to 3, it should be noted that, when the pressure sensor provided in this embodiment is implemented specifically, the pressure sensor can be applied to a fire extinguisher to sense a pressure value of a fire extinguisher medium, and in other cases, the pressure sensor can also be applied to other components such as an automobile, a pipeline, and an air compressor, which are within the protection scope of this embodiment. In this embodiment, an installation groove 11 is formed at the top end of the pressure inlet head 10, and a medium inlet 12 is formed at the bottom end of the pressure inlet head 10, wherein the inner diameter of the installation groove 11 matches with the outer diameter of the base 31, specifically, in this embodiment, the base 31 is fixed in the installation groove 11 by laser welding, and in other cases, the base can also be fixed in the installation groove 11 by adopting a threaded connection or an adhesive manner, which is within the protection scope of this embodiment.
In the present embodiment, as shown in fig. 1 to 2, the sensor core 30 includes a base 31, a pressure sensitive device 32 and a guide pin 33, wherein the guide pin 33 passes through the base 31, a bottom end of the guide pin 33 passes through a bottom of the base 31, and a top end of the guide pin 33 passes through a top of the base 31 and is electrically connected to the circuit board 20. Specifically, in the present embodiment, as shown in fig. 1, for convenience of installation, the top end of the guide pin 33 penetrates through the circuit board 20 and is electrically connected to the circuit board 20, for convenience of implementation, it can be understood that a through hole 21 is formed on the circuit board 20, the guide pin 33 penetrates through the circuit board 20 through the through hole 21, in the implementation, the through hole 21 is set to be a metal conductive hole, and the guide pin 33 is electrically connected to the circuit board 20 through the metal conductive hole, specifically, for increasing the conductive efficiency, the metal conductive hole may be made of copper.
As shown in fig. 2, it is obvious that the plurality of guide pins 33 are provided, and each guide pin 33 correspondingly passes through each through hole 21, specifically, in the present embodiment, the number of guide pins 33 is four, and correspondingly, the number of through holes 21 is also four, when the guide pins 33 pass through the through holes 21 and the circuit board 20 is mounted on the upper surface of the base 31, the guide pins 33 are fixedly mounted on the circuit board 20 by soldering, so as to electrically connect the guide pins 33 and the circuit board 20 together. In this embodiment, as shown in fig. 1, the bottom end of the guide pin 33 penetrates through the bottom of the base 31 and is electrically connected to the pressure sensitive device 32, so that the pressure sensitive device 32 is electrically connected to the circuit board 20 through the guide pin 33. Specifically, the pressure sensitive element 32 is fixedly mounted on the bottom end face of the guide pin 33 by flip-chip welding, and a protection layer is filled between the guide pin 33 and the pressure sensitive element 32, specifically, the protection layer is a solder joint protection layer, and in this embodiment, the solder joint protection layer may be one of epoxy filling, a nano-plating layer, water-resistant silicone gel, and the like. In other cases, the pressure sensitive element 32 can be fixed on the guide pin 33 by means of bonding or the like, and is within the protection scope of the present embodiment.
In this embodiment, as shown in fig. 3, it should be noted that the base 31 is a sintered base, for the convenience of installation, a containing hole 311 is opened in the middle of the base 31, the containing hole 311 is filled with an insulating medium 34, and in specific implementation, the guide pin 33 is fixedly installed on the base 31 through the insulating medium 34. In this embodiment, as shown in fig. 2, it should be noted that. The circuit board 20 is provided with a signal output device 22 and a conductive trace 23 on one side thereof, and the guide pin 33 is electrically connected to the signal output device 22 through the conductive trace 23. Specifically, in the present embodiment, it is obvious that the signal output device 22 is configured as a plurality of signal output terminals, wherein one end of the conductive circuit 23 is electrically connected to the signal output terminals, and the other end of the conductive circuit 23 is electrically connected to the guide pin 33, so as to electrically connect the pressure sensitive device 32, the guide pin 33 and the signal output device 22 together, so as to complete transmission and output of the detection signal. Specifically, the pressure sensing element 32 is configured as a pressure chip, and in other cases, the signal output element 22 may also be configured as a connection elastic piece, an output wire harness, and the like, which are all within the protection scope of the present embodiment.
In specific implementation, an installation groove 11 is formed at one end of the pressure inlet head 10, a medium inlet 12 is formed at the other end, and the installation groove 11 is communicated with the medium inlet 12. During assembly, the base 31 is only required to be installed in the installation groove 11, one side of the base 31, on which the pressure sensitive element 32 is installed, is arranged opposite to the medium inlet 12, the circuit board 20 penetrates through the guide pin 33, the guide pin 33 is electrically connected with the circuit board 20, and finally the circuit board 20 is installed on the base 31, so that the pressure sensor is simply and quickly assembled. The pressure sensor directly installs the sensor core body 30 inside the pressure head 10, and in this way, a shell is not needed, and the space outside the pressure head 10 is not needed to be occupied, so that the volume of the pressure sensor is greatly reduced, and the installation of the pressure sensor is facilitated.
It should be noted that the above implementation process is only for illustrating the applicability of the present application, but this does not represent that the pressure sensor of the present application has only the above-mentioned one implementation flow, and on the contrary, the pressure sensor of the present application can be incorporated into the feasible embodiments of the present application as long as the pressure sensor of the present application can be implemented.
Referring to fig. 4, a pressure sensor according to a second embodiment of the present invention is shown, in which the pressure sensor of this embodiment is different from the pressure sensor of the first embodiment in that:
in this embodiment, as shown in fig. 4, it should be noted that a pad 40 is disposed between the circuit board 20 and the base 31, specifically, the outer diameter of the pad 40 is matched with the outer diameter of the circuit board 20, and in the specific implementation, as shown in fig. 4, a mounting hole is disposed at the central portion of the pad 40, and the mounting hole is used for allowing a plurality of guide pins 33 to pass through, so as to prevent the pad 40 from interfering with the guide pins 33, and then the pad 40 is bonded between the circuit board 20 and the base 31, so as to fixedly mount the three together.
By providing a pad 40 between the circuit board 20 and the base 31, and the pad 40 can be used in conjunction with the signal output element 22, the signal output element 22 is conveniently mounted. The pad 40 can also increase the installation depth of the guide pin 33, further improving the installation stability of the guide pin 33 and the use stability of the pressure sensor.
It should be noted that the device provided by the second embodiment of the present invention, which implements the same principle and produces some technical effects as the first embodiment, can refer to the corresponding contents in the first embodiment for the sake of brief description, where this embodiment is not mentioned.
To sum up, the utility model provides a pressure sensor directly installs sensor core 30 in the inside of advancing pressure head 10, and this kind of mode need not use the shell, and need not occupy the outside space of pressure head 10 to this pressure sensor's volume has been dwindled greatly, and made things convenient for this pressure sensor's installation, and this pressure sensor can bear the use of high pressure, is favorable to using widely on a large scale.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be 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 (10)
1. A pressure sensor, comprising:
the device comprises a pressure inlet head, a pressure outlet head and a pressure control valve, wherein one end of the pressure inlet head is provided with a mounting groove, the other end of the pressure inlet head is provided with a medium inlet, and the medium inlet extends inwards and is communicated with the mounting groove;
the circuit board is arranged on the end face of the pressure inlet head, wherein the mounting groove is formed in the end face, and the circuit board covers the mounting groove;
the sensor core body comprises a base, a pressure sensitive element and a plurality of guide pins, the base is arranged in the mounting groove, the guide pins penetrate through the base, the bottom ends of the guide pins extend out of the bottom of the base, the top ends of the guide pins extend out of the top of the base and are electrically connected with the circuit board, the pressure sensitive element is arranged at the bottom end of the guide pins, and the pressure sensitive element and the medium inlet are oppositely arranged.
2. The pressure sensor of claim 1, wherein: the top end of the guide pin penetrates through the circuit board and is electrically connected with the circuit board.
3. The pressure sensor of claim 2, wherein: the circuit board is provided with a through hole, and the guide pin penetrates through the circuit board through the through hole.
4. The pressure sensor of claim 3, wherein: the through hole is a metal conductive hole, and the guide pin is electrically connected with the circuit board through the metal conductive hole.
5. The pressure sensor of claim 3, wherein: the guide pin sets up to a plurality ofly, every the guide pin all corresponding pass through every the through-hole.
6. The pressure sensor of claim 1, wherein: the base is configured as a sintering base.
7. The pressure sensor of claim 6, wherein: the middle part of the base is provided with a containing hole, the containing hole is filled with an insulating medium, and the guide pin is fixed on the base through the insulating medium.
8. The pressure sensor of claim 1, wherein: and a protective layer is filled between the guide pin and the pressure sensitive element.
9. The pressure sensor of claim 1, wherein: and one side of the circuit board is provided with a signal output element and a conductive circuit, and the guide pin is electrically connected with the signal output element through the conductive circuit.
10. The pressure sensor of claim 1, wherein: a backing plate is arranged between the circuit board and the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022575511.XU CN213068040U (en) | 2020-11-09 | 2020-11-09 | Pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022575511.XU CN213068040U (en) | 2020-11-09 | 2020-11-09 | Pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213068040U true CN213068040U (en) | 2021-04-27 |
Family
ID=75563870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022575511.XU Active CN213068040U (en) | 2020-11-09 | 2020-11-09 | Pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213068040U (en) |
-
2020
- 2020-11-09 CN CN202022575511.XU patent/CN213068040U/en active Active
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