Pressure sensor

Abstract

The invention provides a pressure sensor, and relates to the technical field of pressure sensors. The pressure sensor comprises a sensing body, a first circuit board and a second circuit board. And a pressure sensitive element is arranged in the sensing main body. The first circuit board is arranged in the sensing main body and is electrically connected with the pressure sensitive element; the plane of the first circuit board is parallel to the plane of the pressure sensitive element; the first circuit board is provided with a plug hole. The second circuit board is arranged in the sensing main body; the plane where the second circuit board is located and the plane where the first circuit board is located form an included angle. The end, close to the first circuit board, of the second circuit board is provided with a plug connector, the plug connector is plugged into the plug hole, and the second circuit board is electrically connected with the first circuit board through the plug connector. The pressure sensor provided by the invention can improve the technical problem that the pressure sensor in the prior art is large in size.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure sensors, and in particular to a pressure sensor. Background Art

[0002] The pressure sensitive element is a plurality of resistors made by semiconductor technology, forming a Wheatstone bridge. These multiple resistors are installed on a deformable diaphragm. The diaphragm is strained by the pressure of the measured pressure medium. The strain causes the resistance values ​​of the multiple resistors to change, so that the output of the Wheatstone bridge changes accordingly. The output of the change is processed by the conditioning circuit to form a specific output signal. This is the basic principle of the pressure sensor.

[0003] However, in the prior art, the overall volume of the pressure sensor is generally large, so it is difficult to install in some scenarios with small installation space, which brings great trouble to users. Summary of the invention

[0004] The technical problem solved by the present invention is how to improve the technical problem of the large volume of the pressure sensor in the prior art.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] The present invention provides a pressure sensor, comprising:

[0007] A sensing body having a pressure sensitive element therein;

[0008] A first circuit board is arranged inside the sensor body and is electrically connected to the pressure sensitive element; the plane where the first circuit board is located is parallel to the plane where the pressure sensitive element is located; and a plug hole is provided on the first circuit board;

[0009] A second circuit board is arranged inside the sensor body; the plane where the second circuit board is located is arranged at an angle with the plane where the first circuit board is located; a connector is provided at one end of the second circuit board close to the first circuit board, the connector is plugged into the plug hole, and the second circuit board is electrically connected to the first circuit board through the connector.

[0010] Optionally, the connector includes a first connector portion and a second connector portion connected to each other, the first connector portion and the second connector portion are arranged at an angle; the first connector portion is plugged into the plug hole; and the second connector portion is plugged into the second circuit board.

[0011] Optionally, the first plug-in portion includes a connecting portion, a limiting portion and an elastic portion connected in sequence; one end of the connecting portion away from the limiting portion is connected to the second plug-in portion; the width of the limiting portion is greater than the aperture of the plug-in hole, an avoidance hole is opened in the middle of the elastic portion, and the width of the middle position of the elastic portion is greater than the aperture of the plug-in hole.

[0012] Optionally, the width of the elastic portion at one end away from the limiting portion is smaller than the width of the plug-in hole.

[0013] Optionally, the thickness of the elastic portion is smaller than the diameter of the plug hole.

[0014] Optionally, the first circuit board is perpendicular to the second circuit board, and the first plug-in portion is perpendicular to the second plug-in portion.

[0015] Optionally, the sensing body further includes:

[0016] The access body is provided with a pressure channel; one end of the pressure channel is connected to the external space, and the other end is provided with a deformable diaphragm, and the pressure sensitive element is provided on a side of the deformable diaphragm away from the pressure channel;

[0017] A first bracket is connected to the access body; the first circuit board is connected to the first bracket;

[0018] A second bracket is connected to the access body, and the second bracket is connected to the first bracket; the second circuit board is connected to the second bracket;

[0019] An output component is connected to the second bracket and is electrically connected to the second circuit board. The output component is used to output an electrical signal.

[0020] Optionally, a first surrounding portion is provided at the bottom of the first bracket, and the first surrounding portion is arranged in an arc shape; a second surrounding portion is provided at the bottom of the second bracket, and the second surrounding portion is arranged in an arc shape; the first surrounding portion and the second surrounding portion are connected to form a ring, and the access body is arranged in the annular space formed by the first surrounding portion and the second surrounding portion.

[0021] Optionally, a first L-shaped hook portion is provided at the end of the first surrounding portion, and a second L-shaped hook portion is provided at the end of the second surrounding portion; the first hook portion and the second hook portion are connected to each other.

[0022] Optionally, a supporting portion is provided on the first bracket, and a plane where the supporting portion is located is parallel to a plane where the pressure sensitive element is located; and the first circuit board is arranged on the supporting portion.

[0023] The pressure sensor provided by the present invention has the following advantages over the prior art:

[0024] In the pressure sensor, the existing circuit board is replaced with a separate first circuit board and a second circuit board, and the first circuit board is electrically connected to the pressure sensitive element, which can meet the installation requirements of the pressure sensitive element; and the second circuit board is set to be set at an angle with the first circuit board, which can reduce the occupied space of the second circuit board in the plane direction where the first circuit board is located compared to the integral circuit board in the prior art, thereby achieving the purpose of reducing the overall occupied space of the first circuit board and the second circuit board, which can facilitate the miniaturization of the pressure sensor. Based on this, the pressure sensor can improve the technical problem of the large volume of the pressure sensor in the prior art.

[0025] Furthermore, since the first circuit board and the second circuit board are assembled by plugging the connector into the plug-in hole, when assembling the second circuit board, only a simple plugging action is required to complete the assembly of the first circuit board and the second circuit board, thereby reducing the difficulty of installation. Therefore, the miniaturization design of the pressure sensor can be completed without increasing the difficulty of assembly, thereby saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a schematic diagram of the structure of the pressure sensor provided in the embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of the explosion structure of the pressure sensor provided in the embodiment of the present application;

[0029] Figure 3 A schematic structural diagram of a connector provided in an embodiment of the present application from a first perspective;

[0030] Figure 4 A schematic structural diagram of a plug-in connector provided in an embodiment of the present application from a second viewing angle;

[0031] Figure 5 This is a schematic diagram of the structure of the first bracket provided in an embodiment of the present application;

[0032] Figure 6 This is a schematic diagram of the structure of the second bracket provided in an embodiment of the present application.

[0033] Icon: 10-pressure sensor; 100-sensing body; 110-access body; 112-deformable diaphragm; 113-pressure sensitive element; 120-first bracket; 121-first surrounding part; 1211-first hook part; 122-supporting part; 130-second bracket; 131-second surrounding part; 1311-second hook part; 140-output component; 200-first circuit board; 210-plug hole; 300-second circuit board; 400-plug-in component; 410-first plug-in part; 411-connecting part; 412-limiting part; 413-elastic part; 4131-avoidance hole; 420-second plug-in part. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0039] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0040] See also Figure 1In the embodiment of the present application, a pressure sensor 10 is provided, which can be used to perform pressure detection operations. The pressure sensor 10 provided in the present embodiment can improve the technical problem of the pressure sensor 10 being large in size in the prior art.

[0041] In this embodiment, please refer to Figure 1 and Figure 2 The pressure sensor 10 includes a sensing body 100, a first circuit board 200 and a second circuit board 300. Among them, a pressure sensitive element 113 is provided in the sensing body 100. That is to say, the sensing body 100 is used to receive fluid, and is used to respond to the pressure of the fluid, and can trigger the generation of an electrical signal. The first circuit board 200 is arranged inside the sensing body 100 and is electrically connected to the pressure sensitive element 113; the plane where the first circuit board 200 is located is parallel to the plane where the pressure sensitive element 113 is located; and a plug hole 210 is opened on the first circuit board 200. The second circuit board 300 is arranged inside the sensing body 100; the plane where the second circuit board 300 is located is set at an angle to the plane where the first circuit board 200 is located; a plug connector 400 is provided at one end of the second circuit board 300 close to the first circuit board 200, and the plug connector 400 is plugged into the plug hole 210, and the second circuit board 300 is electrically connected to the first circuit board 200 through the plug connector 400.

[0042] It is worth noting that in this embodiment, the first circuit board 200 is mainly used to realize wire binding with the pressure sensitive element 113, while the second circuit board 300 is mainly used to integrate electronic components for processing electrical signals; in other words, generally, the overall volume of the second circuit board 300 is larger than the overall volume of the first circuit board 200.

[0043] As described above, in the pressure sensor 10, the existing circuit board is replaced with the split first circuit board 200 and the second circuit board 300, and the first circuit board 200 is electrically connected to the pressure sensitive element 113. On the one hand, the installation requirements of the pressure sensitive element 113 can be met; on the other hand, the second circuit board 300 is set to be set at an angle with the first circuit board 200. Compared with the integral circuit board in the prior art, the occupied space of the second circuit board 300 can be reduced in the plane direction where the first circuit board 200 is located, thereby achieving the purpose of reducing the overall occupied space of the first circuit board 200 and the second circuit board 300, which can facilitate the miniaturization of the pressure sensor 10. Based on this, the pressure sensor 10 can improve the technical problem of the large volume of the pressure sensor 10 in the prior art.

[0044] It is worth noting that since most of the electronic components are arranged on the second circuit board 300, the second circuit board 300 is arranged at an angle with the first circuit board 200, which can also meet the space requirements of the electronic components on the second circuit board 300 and facilitate the arrangement of the electronic components on the second circuit board 300. Thus, while reducing the overall space occupied by the circuit board, the space inside the sensor body 100 is further reasonably utilized, making the miniaturization of the pressure sensor 10 more operable.

[0045] Furthermore, since the first circuit board 200 and the second circuit board 300 are assembled by plugging the plug-in component 400 and the plug-in hole 210, when assembling the second circuit board 300, only a simple plugging action is required to complete the assembly of the first circuit board 200 and the second circuit board 300, thereby reducing the difficulty of installation. Therefore, the miniaturization design of the pressure sensor 10 can be completed without increasing the difficulty of assembly, thereby saving costs.

[0046] Optionally, in this embodiment, the first circuit board 200 is perpendicular to the second circuit board 300. Figure 1 In the case of a viewing angle, the first circuit board 200 can be regarded as being arranged horizontally, and the second circuit board 300 can be regarded as being arranged vertically. It should be understood that in other embodiments, the angle between the second circuit board 300 and the first circuit board 200 can also form other angles, for example, an acute angle is formed between the first circuit board 200 and the second circuit board 300; in other words, the second circuit board 300 is arranged at an angle.

[0047] In this embodiment, please refer to Figure 2 , Figure 3 and Figure 4 , the plug connector 400 includes a first plug connector portion 410 and a second plug connector portion 420 connected to each other, and the first plug connector portion 410 and the second plug connector portion 420 are arranged at an angle; the first plug connector portion 410 is plugged into the plug hole 210; and the second plug connector portion 420 is plugged into the second circuit board 300. Generally, before the first circuit board 200 and the second circuit board 300 are assembled, the second plug connector portion 420 is first plugged into the second circuit board 300, so that the plug connector 400 and the second circuit board 300 form a whole; however, the whole formed by the plug connector 400 and the second circuit board 300 is assembled into the first circuit board 200, that is, the first plug connector portion 410 is plugged into the plug hole 210, so that the assembly of the first circuit board 200 and the second circuit board 300 is completed.

[0048] It should be noted that when the pressure sensor 10 needs to be maintained or disassembled, the first circuit board 200 and the second circuit board 300 can be disassembled simply by pulling out the connector 400 from the connector hole 210 , which is simple and convenient.

[0049] Further, in the present embodiment, the first plug-in portion 410 includes a connecting portion 411, a limiting portion 412 and an elastic portion 413 connected in sequence; one end of the connecting portion 411 away from the limiting portion 412 is connected to the second plug-in portion 420; the width of the limiting portion 412 is greater than the aperture of the plug-in hole 210, and a avoiding hole 4131 is provided in the middle of the elastic portion 413, and the width of the middle position of the elastic portion 413 is greater than the aperture of the plug-in hole 210. In the process of inserting the first plug-in portion 410 into the plug-in hole 210, the end of the elastic portion 413 is first inserted into the plug-in hole 210, and based on the setting of the avoiding hole 4131 in the middle of the elastic portion 413, the elastic portion 413 can be easily deformed to reduce the width of the elastic portion 413, so as to achieve the purpose of inserting the elastic portion 413 into the plug-in hole 210. Furthermore, when the elastic part 413 is inserted into the plug hole 210, the elastic part 413 generates elastic deformation, and through its elastic recovery effect, the elastic part 413 can be stably plugged into the plug hole 210, ensuring that the plug connector 400 and the first circuit board 200 are stably connected, ensuring the stability of the electrical connection. In addition, since the width of the limiting part 412 is greater than the plug hole 210, the limiting and positioning of the first plug part 410 can be achieved through the abutment between the limiting part 412 and the opening of the plug hole 210, ensuring that the first plug part 410 is plugged in place; on the other hand, through the setting of the limiting part 412, during the assembly process, it is also convenient for the operator or the operating mechanism to determine whether the first plug part 410 is plugged in place.

[0050] In other embodiments of the present application, at least one of the connection portion 411 and the limiting portion 412 may be eliminated. When only the connection portion 411 is eliminated, the limiting portion 412 may be directly connected to the second plug-in portion 420; when only the limiting portion 412 is eliminated, since the first plug-in portion 410 and the second plug-in portion 420 are arranged at an angle, the limiting and positioning can be achieved through the second plug-in portion 420; when both the connection portion 411 and the elastic portion 413 are eliminated, the elastic portion 413 may be directly connected to the second plug-in portion 420, and the limiting can also be achieved through the second plug-in portion 420.

[0051] Furthermore, the width of the elastic portion 413 at one end away from the limiting portion 412 is smaller than the width of the plug hole 210. This facilitates the elastic portion 413 to be inserted into the plug hole 210 and plays a role of insertion guide.

[0052] In addition, the thickness of the elastic part 413 is smaller than the diameter of the plug hole 210. Based on this, the contact area between the elastic part 413 and the inside of the plug hole 210 can be reduced, thereby reducing the friction of the elastic part 413 inserted into the plug hole 210, and reducing the difficulty of plugging the first plug part 410 into the plug hole 210, which is convenient for improving assembly efficiency.

[0053] In this embodiment, corresponding to the first circuit board 200 being perpendicular to the second circuit board 300, the first plug-in portion 410 is perpendicular to the second plug-in portion 420; wherein the first plug-in portion 410 is roughly parallel to the second circuit board 300, and the second plug-in portion 420 is roughly parallel to the first circuit board 200, thereby facilitating the vertical insertion of the first plug-in portion 410 into the plug hole 210, and facilitating the assembly of the first plug-in portion 410 and the plug hole 210.

[0054] In this embodiment, there are a plurality of plug-in components 400 , and correspondingly, a plurality of plug-in holes 210 are provided on the first circuit board 200 , and the plurality of plug-in components 400 are plugged into the plurality of plug-in holes 210 in a one-to-one correspondence.

[0055] In this embodiment, please refer to Figure 2 , Figure 5 and Figure 6 The sensor body 100 also includes an access body 110, a first bracket 120, a second bracket 130 and an output assembly 140. The access body 110 is provided with a pressure channel; one end of the pressure channel is connected to the outside space, and the other end is provided with a deformable diaphragm 112, and the pressure sensitive element 113 is provided on the side of the deformable diaphragm 112 away from the pressure channel. It is worth noting that in this embodiment, Figure 1 In the case of an example, the pressure channel is also arranged vertically, which can facilitate the processing of the pressure channel and the formation of the deformable diaphragm 112, and reduce the processing difficulty of the access body 110. The first bracket 120 is connected to the access body 110; the first circuit board 200 is connected to the first bracket 120. The second bracket 130 is connected to the access body 110, and the second bracket 130 is connected to the first bracket 120; the second circuit board 300 is connected to the second bracket 130. The function of the first bracket 120 and the second bracket 130 is to provide support for the first circuit board 200 and the second circuit board 300, which can ensure the overall stability of the first circuit board 200 and the second circuit board 300, and can also ensure the stability of the electrical connection between the first circuit board 200 and the second circuit board 300. The output component 140 is connected to the second bracket 130, and the output component 140 is electrically connected to the second circuit board 300, and the output component 140 is used to output electrical signals.

[0056] It should be noted that the sensor body 100 also includes a housing. Figure 1 and Figure 2 The housing is omitted. The housing is cylindrical, and the output assembly 140 and the access body 110 are respectively connected to both ends of the housing and exposed, and the first circuit board 200 and the second circuit board 300 are located inside the housing.

[0057] Optionally, in this embodiment, the first bracket 120 is provided with a first surrounding portion 121 at the bottom, and the first surrounding portion 121 is arranged in an arc shape; the second bracket 130 is provided with a second surrounding portion 131 at the bottom, and the second surrounding portion 131 is arranged in an arc shape; the first surrounding portion 121 and the second surrounding portion 131 are connected to form a ring, and the access body 110 is arranged in the ring space formed by the first surrounding portion 121 and the second surrounding portion 131. The first surrounding portion 121 and the second surrounding portion 131 are arranged to form a ring structure, on the one hand, it can ensure that the first bracket 120 and the second bracket 130 can be stably connected to the access body 110; on the other hand, it can ensure that the first bracket 120 and the second bracket 130 are close to the access body 110, reduce the space occupied by the first bracket 120 and the second bracket 130, reasonably use the internal space of the sensing body 100, and facilitate the miniaturization of the pressure sensor 10.

[0058] The first surrounding portion 121 and the access body 110 may be connected by welding; similarly, the second surrounding portion 131 and the access body 110 may also be connected by welding. Of course, in other embodiments, the diameter of the annular space surrounded by the first surrounding portion 121 and the second surrounding portion 131 may be set to be slightly smaller than the diameter of the access body 110, so that the first surrounding portion 121 and the second surrounding portion 131 can be stably clamped on the outer periphery of the access body 110.

[0059] In addition, in order to improve the connection stability between the first surrounding portion 121 and the second surrounding portion 131, an L-shaped first hook portion 1211 is provided at the end of the first surrounding portion 121, and an L-shaped second hook portion 1311 is provided at the end of the second surrounding portion 131; the first hook portion 1211 and the second hook portion 1311 are hooked with each other. The first hook portion 1211 and the second hook portion 1311 are hooked with each other, which means that the front end of the first hook portion 1211 is hooked into the inner groove of the second hook portion 1311, and correspondingly, the front end of the second hook portion 1311 is hooked into the inner groove of the first hook portion 1211, thereby engaging with each other, which can improve the connection stability of the first surrounding portion 121 and the second surrounding portion 131.

[0060] It should be understood that in other embodiments, the first hook portion 1211 and the second hook portion 1311 may also be eliminated.

[0061] In this embodiment, a supporting portion 122 is provided on the first bracket 120, and the plane where the supporting portion 122 is located is parallel to the plane where the pressure sensitive element 113 is located; the first circuit board 200 is arranged on the supporting portion 122. On the one hand, the supporting portion 122 can provide stable support to the first circuit board 200 to ensure the stability of the first circuit board 200; on the other hand, the first bracket 120 can be used alone to support the first circuit board 200, so as to prevent the first circuit board 200 from affecting the deformable diaphragm 112 and ensure the accuracy of pressure detection.

[0062] In summary, in the pressure sensor 10, the existing circuit board is replaced with the split first circuit board 200 and the second circuit board 300, and the first circuit board 200 is electrically connected to the pressure sensitive element 113, which can meet the installation requirements of the pressure sensitive element 113; and the second circuit board 300 is set to be set at an angle with the first circuit board 200, compared with the integral circuit board in the prior art, the occupied space of the second circuit board 300 can be reduced in the plane direction where the first circuit board 200 is located, thereby achieving the purpose of reducing the overall occupied space of the first circuit board 200 and the second circuit board 300, which can facilitate the miniaturization of the pressure sensor 10. Based on this, the pressure sensor 10 can improve the technical problem of the large volume of the pressure sensor 10 in the prior art. Furthermore, since the first circuit board 200 and the second circuit board 300 are assembled by plugging the plug-in component 400 and the plug-in hole 210, when assembling the second circuit board 300, only a simple plugging action is required to complete the assembly of the first circuit board 200 and the second circuit board 300, thereby reducing the difficulty of installation. Therefore, the miniaturization design of the pressure sensor 10 can be completed without increasing the difficulty of assembly, thereby saving costs.

[0063] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A pressure sensor, characterized in that: include: A sensing body (100) having a pressure sensitive element (113) disposed therein; A first circuit board (200) is arranged inside the sensing body (100) and is electrically connected to the pressure sensitive element (113); the plane where the first circuit board (200) is located is parallel to the plane where the pressure sensitive element (113) is located; and a plug hole (210) is provided on the first circuit board (200); A second circuit board (300) is arranged inside the sensor body (100); the plane where the second circuit board (300) is located is arranged at an angle with the plane where the first circuit board (200) is located; a plug-in component (400) is provided at one end of the second circuit board (300) close to the first circuit board (200), the plug-in component (400) is plugged into the plug hole (210), and the second circuit board (300) is electrically connected to the first circuit board (200) via the plug-in component (400).

2. The pressure sensor according to claim 1, characterized in that: The plug connector (400) comprises a first plug connector (410) and a second plug connector (420) which are connected to each other, wherein the first plug connector (410) and the second plug connector (420) are arranged at an angle; the first plug connector (410) is plugged into the plug hole (210); and the second plug connector (420) is plugged into the second circuit board (300).

3. The pressure sensor according to claim 2, characterized in that: The first plug-in portion (410) comprises a connecting portion (411), a limiting portion (412) and an elastic portion (413) which are connected in sequence; one end of the connecting portion (411) away from the limiting portion (412) is connected to the second plug-in portion (420); the width of the limiting portion (412) is greater than the aperture of the plug-in hole (210); a avoidance hole (4131) is provided in the middle of the elastic portion (413), and the width of the middle portion of the elastic portion (413) is greater than the aperture of the plug-in hole (210).

4. The pressure sensor according to claim 3, characterized in that: The width of the elastic portion (413) at one end away from the limiting portion (412) is smaller than the width of the plug hole (210).

5. The pressure sensor according to claim 3, characterized in that: The thickness of the elastic portion (413) is smaller than the diameter of the plug hole (210).

6. The pressure sensor according to claim 2, characterized in that: The first circuit board (200) is perpendicular to the second circuit board (300), and the first plug-in portion (410) is perpendicular to the second plug-in portion (420).

7. The pressure sensor according to any one of claims 1 to 6, characterized in that: The sensing body (100) further comprises: The access body (110) is provided with a pressure channel; one end of the pressure channel is connected to the external space, and the other end is provided with a deformable diaphragm (112); the pressure sensitive element (113) is provided on a side of the deformable diaphragm (112) away from the pressure channel; A first bracket (120) is connected to the access body (110); the first circuit board (200) is connected to the first bracket (120); A second bracket (130) is connected to the access body (110), and the second bracket (130) is connected to the first bracket (120); the second circuit board (300) is connected to the second bracket (130); An output component (140) is connected to the second bracket (130), and the output component (140) is electrically connected to the second circuit board (300), and the output component (140) is used to output electrical signals.

8. The pressure sensor according to claim 7, characterized in that: A first surrounding portion (121) is provided at the bottom of the first bracket (120), and the first surrounding portion (121) is arranged in an arc shape; a second surrounding portion (131) is provided at the bottom of the second bracket (130), and the second surrounding portion (131) is arranged in an arc shape; the first surrounding portion (121) and the second surrounding portion (131) are connected to form a ring shape, and the access body (110) is arranged in the ring space formed by the first surrounding portion (121) and the second surrounding portion (131).

9. The pressure sensor according to claim 8, characterized in that: The end of the first surrounding portion (121) is provided with an L-shaped first hook portion (1211), and the end of the second surrounding portion (131) is provided with an L-shaped second hook portion (1311); the first hook portion (1211) and the second hook portion (1311) are connected to each other.

10. The pressure sensor according to claim 7, characterized in that: A supporting portion (122) is provided on the first bracket (120), and the plane where the supporting portion (122) is located is parallel to the plane where the pressure sensitive element (113) is located; the first circuit board (200) is arranged on the supporting portion (122).

Images