Composite sensor

Abstract

The invention relates to a composite sensor, which comprises a base, a plurality of guide holes and a first butt joint piece are formed on the base, and each guide hole penetrates through the base; the pressure sensor is arranged on the top surface of the base; the circuit board is arranged on the pressure sensor and is electrically connected with the pressure sensor; a second butt joint piece is formed on one end face of the connector, and the connector is connected with the first butt joint piece through the second butt joint piece; the temperature sensor is arranged on the bottom surface of the base and is electrically connected with the circuit board; one end of the shell is concaved inwards to form a containing groove and a notch, a groove hole penetrates through the groove bottom of the containing groove, the shell is fixed to the connector in a sleeving mode through the notch, and the temperature sensor penetrates out of the groove hole; by means of mutual connection of the second butt-joint piece on the connector and the first butt-joint piece on the base, not only can the anti-rotation effect be achieved among all the elements, but also the effect that an assembler can install all the elements more quickly and accurately during assembling can be achieved, so that the assembling difficulty is reduced, and the situation that the elements are damaged due to improper assembling is reduced.

Description

Technical Field

[0001] The present invention relates to a sensor, in particular to a composite sensor capable of detecting temperature and pressure. Background Art

[0002] The temperature probe of the prior art integrated temperature and pressure sensor is mainly divided into two types: open type and closed type. However, the open type temperature probe is prone to corrosion after being exposed to the medium for a long time. Although the closed type temperature probe can avoid corrosion, because it is integrally formed with the shell, the material is limited to be the same as the shell. Therefore, some materials limit the reaction speed of temperature detection, resulting in untimely and inaccurate detection results. In addition, due to the limitation of material selection, the overall external dimensions are also easily limited. During assembly, the interior of the existing integrated temperature and pressure sensor mostly adopts a hook structure, using the hooks on both sides to pre-assemble the internal components and then place them in the sensor shell. However, in order to prevent detachment, this hook structure usually cannot be reversed after installation. Therefore, when the internal components are damaged, they must be dismantled in a destructive manner for maintenance, which is time-consuming and not environmentally friendly, and easily increases production costs.

[0003] Therefore, the overall structure of the temperature-pressure integrated sensor in the prior art has the aforementioned problems and shortcomings, and needs to be improved. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a composite sensor, which achieves the purpose of rapid and accurate assembly of the base and the connector and preventing rotation by providing a first docking piece with a socket on the base and a second docking piece on the connector.

[0005] In order to achieve the above-mentioned purpose of the invention, the technical means adopted by the present invention is to design a composite sensor, which comprises:

[0006] A base having a top surface, a bottom surface and an annular wall surface, wherein the annular wall surface is located between the top surface and the bottom surface, the top surface of the base is concave to form a top groove, the bottom surface of the base is concave to form a bottom groove, the base is formed with a plurality of guide holes and a first docking member, each of the guide holes passes through the top groove and the bottom groove of the base;

[0007] a pressure sensor disposed on the top surface of the base;

[0008] a circuit board, which is disposed on the pressure sensor and is electrically connected to the pressure sensor;

[0009] A connector having an inner connecting end and an outer connecting end, wherein the inner connecting end is formed with a second docking member, and the outer connecting end is a plug for electrically connecting to an external device, and the second docking member is connected to the first docking member;

[0010] a temperature sensor, which is disposed on the bottom surface of the base and is electrically connected to the circuit board;

[0011] A shell has one end which is concave to form a groove and a notch. A slot hole is passed through the bottom of the groove. The shell is fixed to the inner connection end of the connector by the notch. The temperature sensor passes through the slot hole.

[0012] Furthermore, in the composite sensor, the first docking member is protruding from the annular wall and is formed with an insertion hole, the second docking member is a rod, and the connector is fixed to the insertion hole by inserting the second docking member.

[0013] Furthermore, in the composite sensor, the insertion hole is a hole with a polygonal cross section, the second docking member is a polygonal rod, and the shape of the insertion hole corresponds to the shape of the second docking member.

[0014] Furthermore, in the composite sensor, the base is formed with at least one limit rod, at least one of the limit rods is protruding from the top surface and adjacent to the annular wall surface, and the outer peripheral edge of the pressure sensor is concave to form at least one limit opening, and at least one of the limit openings is abutted against at least one of the limit rods.

[0015] Furthermore, in the composite sensor, at least one of the limiting rods is a rod body with a semicircular cross section, and at least one of the limiting openings is an arc-shaped notch.

[0016] Furthermore, in the composite sensor, the groove wall surface of the containing groove is concave to form a groove, the groove extends along the two end directions of the shell, and the first docking member is in contact with the groove.

[0017] Furthermore, in the composite sensor, a combining rod protrudes from the other end of the shell, the combining rod is a hollow rod body and is formed with an external thread, the slot passes through the combining rod, the temperature sensor has a probe housing, a sensing end and a plurality of legs, the probe housing is a hollow rod body and one end of the probe housing has an opening, the other end of the probe housing is closed, the sensing end penetrates into the probe housing from the opening of the probe housing, the probe housing passes out of the combining rod from the slot, the temperature sensor is fixed to the bottom surface of the base at the opening position of the probe housing, and at least one of the legs passes through and is fixed to at least one of the limit rods.

[0018] Furthermore, in the composite sensor, the inner connecting end of the connector is formed with at least one limiting groove, and at least one of the legs of the temperature sensor is inserted into the at least one limiting groove.

[0019] Furthermore, the composite sensor comprises a plurality of gaskets, each gasket being respectively arranged between the containing groove and the bottom groove of the base, between the top groove of the base and the pressure sensor, and between the inner connection end of the connector and the shell.

[0020] Furthermore, in the composite sensor, the pressure sensor is a ceramic capacitor.

[0021] The advantages of the present invention are that, by means of the second docking piece on the connector, the first docking piece on the base and the groove of the shell, an anti-rotation structure is formed between the components, so that the assemblers on the production line can install the components more quickly and accurately during assembly, and prevent the components from rotating relative to each other, thereby reducing the difficulty of assembly and the situation where the components are damaged due to improper assembly; only a second docking piece is used to accurately pre-assemble the assembly, which has the advantages of occupying a small space and being easy to match the external dimensions of the pressure sensor located in the middle; the sensing end of the temperature sensor and the probe housing are installed separately, and the material and size of the temperature sensor and the probe housing can be flexibly adjusted according to different application scenarios, thereby maximizing high sensitivity and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0023] Figure 1 It is a three-dimensional appearance diagram of the present invention;

[0024] Figure 2 It is an exploded view of the components of the present invention;

[0025] Figure 3 It is an exploded view of components from another angle of the present invention;

[0026] Figure 4 It is a longitudinal cross-sectional view of the present invention;

[0027] Figure 5 is a transverse cross-sectional view of the present invention;

[0028] Figure 6 It is another transverse cross-sectional view of the present invention. DETAILED DESCRIPTION

[0029] The following is a further description of the technical means adopted by the present invention to achieve the predetermined purpose of the invention with reference to the accompanying drawings and preferred embodiments of the present invention.

[0030] See also Figure 1 and Figure 2 As shown, the composite sensor of the present invention comprises a base 10 , a pressure sensor 20 , a circuit board 30 , a connector 40 , a temperature sensor 50 , a housing 60 and a plurality of gaskets 70 .

[0031] See also Figure 2 and Figure 3 As shown, the base 10 is an elastic body, which has a top surface 11, a bottom surface 12 and an annular wall surface 13, the annular wall surface 13 is located between the top surface 11 and the bottom surface 12, the top surface 11 of the base 10 is concave to form a top groove 111, the bottom surface 12 of the base 10 is concave to form a bottom groove 121, the base 10 is formed with a plurality of guide holes 14, a first docking member 15 and a plurality of limit rods 16, each guide hole 14 passes through the top groove 111 and the bottom groove 121 of the base 10, the first docking member 15 A plug hole 151 is protruded from the annular wall surface 13 and penetrated by the first docking member 15. The plug hole 151 is a hole with a polygonal cross section. Each limiting rod 16 is protruded from the top surface 11 and adjacent to one side of the annular wall surface 13. In the present embodiment, each limiting rod 16 is a rod body with a semicircular cross section, but this is not limited to this. The number of limiting rods 16 can also be one. The material of the base 10, the form of the plug hole 151 and the limiting rod 16 can be changed according to user needs, and the limiting rod 16 may not be formed.

[0032] The pressure sensor 20 is arranged on the top surface 11 of the base 10. In the present embodiment, the pressure sensor 20 is a circular sheet-shaped ceramic capacitor, but the present invention is not limited thereto. A plurality of limit openings 21 are formed inwardly on the outer peripheral edge of the pressure sensor 20. The limit openings 21 are arc-shaped notches. The limit openings 21 are abutted against the limit rod 16, but the present invention is not limited thereto. The limit openings 21 may not be formed or the number of limit openings 21 may be one.

[0033] The circuit board 30 is disposed on the pressure sensor 20 and is electrically connected to the pressure sensor 20 . In the present embodiment, the circuit board 30 is provided with a plurality of electrical connection rods 31 , and each electrical connection rod 31 is electrically connected to the circuit board 30 , but the present invention is not limited thereto.

[0034] See also Figures 2 to 5As shown, the connector 40 has an inner connecting end 41 and an outer connecting end 42, the inner connecting end 41 and the outer connecting end 42 are opposite ends, the inner connecting end 41 is formed with a mounting groove 411, a second docking member 412, a plurality of limit grooves 413 and a plurality of connecting holes 414, the mounting groove 411 is recessed in the end surface of the inner connecting end 41, the second docking member 412 is a polygonal rod and convexly arranged on the end surface of the inner connecting end 41, but is not limited to this, the form of the second docking member 412 can be changed according to user needs, for example, the second docking member 412 can be docked with the first The second docking member 412 has a shape corresponding to that of the socket 151. The connector 40 is fixed to the socket 151 of the base 10 by passing the second docking member 412. Each electrical connecting rod 31 passes through each connecting hole 414, so that the connector 40 is fixed to the top surface 11 of the base 10 by the inner connecting end 41.

[0035] The temperature sensor 50 has a probe housing 51, a sensing end 52 and a plurality of legs 53. The probe housing 51 is a hollow rod body with an opening at one end and a closed end. The sensing end 52 penetrates into the probe housing 51 from the opening of the probe housing 51. The probe housing 51 is fixed to the bottom surface 12 of the base 10 at the position of the opening. Each leg 53 penetrates and is fixed to each limit rod 16 and the circuit board 30 and extends into each limit groove 413. Each leg 53 is electrically connected to the circuit board 30. In the present embodiment, the sensing end 52 and the legs 53 are structures of thermistor elements, which is a prior art and will not be described in detail.

[0036] See also Figure 2 and Figure 6 As shown, one end of the shell 60 is concave to form a groove 61 and a notch 62, the bottom of the groove 61 is penetrated by a slot hole 63, and the groove wall surface of the groove 61 is concave to form a groove 64, and the groove 64 extends along the two ends of the shell 60. The shell 60 is fixed to the inner connection end 41 of the connector 40 with the notch 62, the temperature sensor 50 passes through the slot hole 63, and the first docking member 15 is in contact with the groove 64. In this embodiment, a connecting rod 65 protrudes from the other end of the shell 60. The connecting rod 65 is a hollow rod body and is formed with an external thread. The slot hole 63 passes through the connecting rod 65, and the outer shell of the temperature sensor 50 passes through the connecting rod 65 from the slot hole 63, but it is not limited to this. The form of the connecting rod 65 can be changed according to user needs.

[0037] Each gasket 70 is respectively arranged between the groove 61 and the bottom groove 121 of the base 10, between the top groove 111 of the base 10 and the pressure sensor 20, and between the inner connection end 41 of the connector 40 and the shell 60. The gasket 70 is a ring-shaped element with sealing and leak-proof properties. This is the existing technology and will not be repeated here.

[0038] When assembling the present invention, please refer to Figure 2 and Figure 3 As shown, first, the sensing end 52 of the temperature sensor 50 is placed in the probe housing 51, and the legs 53 of the temperature sensor 50 are combined with the base 10, and one of the washers 70 is placed in the top groove 111 of the base 10, and the pressure sensor 20 is placed on the washer 70, and the limiting opening 21 on the pressure sensor 20 is abutted against the limiting rod 16 of the base 10 to be fixed in position; the circuit board 30 is welded to the pressure sensor 20, and the circuit board 30 is welded to the limiting rod 16 extending from the base 10. The legs 53 of the temperature sensor 50 are protruding; the electrical connecting rods 31 on the circuit board 30 are inserted into the connecting holes 414 on the connector 40, and the connector 40, the circuit board 30, the pressure sensor 20, the gasket 70, and the base 10 are combined into an assembly from top to bottom; another gasket 70 is placed in the bottom groove 121 of the base 10, and the assembly is placed in the shell 60, the first docking piece 15 on the base 10 is aligned with the groove 64 of the shell 60, and then the shell 60 is pressed to fix the assembly.

[0039] When the present invention is used, it is described by locking it in a pipeline (not shown in the figure) and testing the fluid in the pipeline as an example. The fluid in the pipeline enters the bottom of the base 10 through the gap between the slot 63 of the shell 60 and the probe shell 51, and reaches the sensing surface of the lower edge of the pressure sensor 20 through the guide hole 14 of the base 10 for pressure sensing; the probe shell 51 is used to extend into the fluid, and the sensing end 52 is used for temperature sensing.

[0040] In the above process, an anti-rotation structure is formed between the components by means of the second docking piece 412 on the connector 40, the first docking piece 15 on the base 10 and the groove 64 of the shell 60, so that assemblers on the production line can install the components more quickly and accurately during assembly, and prevent the components from rotating relative to each other, thereby reducing the difficulty of assembly and the possibility of components being damaged due to improper assembly.

[0041] In the above process, only one second docking member 412 is used to accurately pre-assemble the assembly, which has the advantages of occupying a small space and being easy to match the outer dimensions of the pressure sensor 20 located in the middle.

[0042] In the above process, the sensing end 52 of the temperature sensor 50 and the probe housing 51 are installed separately, and the material and size of the temperature sensor 50 and the probe housing 51 can be flexibly adjusted according to different application scenarios to maximize high sensitivity and low cost.

[0043] The above is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been recorded as a preferred embodiment as above, it is not used to limit the present invention. Any technician in the relevant technical field can make some changes or modifications to the above-disclosed technical contents as equivalent embodiments of equivalent changes without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A composite sensor, characterized in that: The composite sensor includes: A base having a top surface, a bottom surface and an annular wall surface, wherein the annular wall surface is located between the top surface and the bottom surface, the top surface of the base is concave to form a top groove, the bottom surface of the base is concave to form a bottom groove, the base is formed with a plurality of guide holes and a first docking member, each of the guide holes passes through the top groove and the bottom groove of the base; a pressure sensor disposed on the top surface of the base; a circuit board, which is disposed on the pressure sensor and is electrically connected to the pressure sensor; A connector having an inner connecting end and an outer connecting end, wherein the inner connecting end is formed with a second docking member, and the outer connecting end is a plug for electrically connecting to an external device, and the second docking member is connected to the first docking member; a temperature sensor, which is disposed on the bottom surface of the base and is electrically connected to the circuit board; A shell has one end which is concave to form a groove and a notch. A slot hole is passed through the bottom of the groove. The shell is fixed to the inner connection end of the connector by the notch. The temperature sensor passes through the slot hole.

2. The composite sensor according to claim 1, characterized in that: The first docking piece is protrudingly arranged on the annular wall surface and is formed with an insertion hole. The second docking piece is a rod body. The connector is fixed in the insertion hole by inserting the second docking piece.

3. The composite sensor according to claim 2, characterized in that: The insertion hole is a hole with a polygonal cross section, the second docking piece is a polygonal rod, and the shape of the insertion hole corresponds to the shape of the second docking piece.

4. The composite sensor according to any one of claims 1 to 3, characterized in that: The base is formed with at least one limiting rod, which is convexly arranged on the top surface and adjacent to the annular wall surface. The outer periphery of the pressure sensor is concavely formed with at least one limiting opening, and at least one limiting opening is abutted against at least one limiting rod.

5. The composite sensor according to claim 4, characterized in that: At least one of the limiting rods is a rod body with a semicircular cross section, and at least one of the limiting openings is an arc-shaped notch.

6. The composite sensor according to claim 5, characterized in that: The groove wall surface of the containing groove is concave to form a groove, and the groove extends along the two end directions of the shell, and the first docking piece is in contact with the groove.

7. The composite sensor according to claim 6, characterized in that: A combining rod protrudes from the other end of the shell, and the combining rod is a hollow rod body and is formed with an external thread. The slot passes through the combining rod. The temperature sensor has a probe housing, a sensing end and a plurality of legs. The probe housing is a hollow rod body and one end of the probe housing has an opening, and the other end of the probe housing is closed. The sensing end penetrates into the probe housing from the opening of the probe housing, and the probe housing passes out of the combining rod from the slot. The temperature sensor is fixed to the bottom surface of the base at the opening position of the probe housing, and at least one of the legs penetrates and is fixed to at least one of the limiting rods.

8. The composite sensor according to claim 7, characterized in that: The inner connection end of the connector is formed with at least one limiting groove, and at least one of the legs of the temperature sensor is inserted into the at least one limiting groove.

9. The composite sensor according to claim 8, characterized in that: The composite sensor comprises a plurality of gaskets, each of which is respectively arranged between the containing groove and the bottom groove of the base, between the top groove of the base and the pressure sensor, and between the inner connection end of the connector and the shell.

10. The composite sensor according to claim 9, characterized in that: The pressure sensor is a ceramic capacitor.

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