Absolute humidity sensor structure

Abstract

The utility model belongs to the technical field of humidity sensors, and discloses an absolute humidity sensor structure, which comprises a sensor head metal shell assembly, the sensor head metal shell assembly is provided with a mounting base and a mounting cover shell, the mounting base is fixedly connected with the mounting cover shell, and the mounting cover shell is fixedly connected with the sensor head metal shell assembly. A mounting cavity with an upward opening is formed in the mounting base, a mounting block is arranged in the mounting cavity formed in the mounting base, a mounting hole groove is formed in the mounting block, and a humidity sensitive element is arranged in the mounting hole groove formed in the mounting block; a pin of the humidity sensitive element is electrically connected with the humidity sensing circuit board, the mounting block is connected with the humidity sensing circuit board, and the humidity sensing circuit board is electrically connected with a wire cable. The absolute humidity sensor has the advantages that the service life of the absolute humidity sensor is prolonged, and the overall practicability of the absolute humidity sensor is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of humidity sensors, and more specifically, relates to an absolute humidity sensor structure. Background Technology

[0002] Absolute humidity sensors have wide applications in meteorology, medicine, environmental protection, and home appliances, frequently requiring humidity measurement and control. However, among conventional measurement parameters, humidity is one of the most difficult to measure accurately. An absolute humidity sensor uses a moisture-sensitive element to collect data on the moisture content of air molecules, feeding this data back to a central processing unit via digital or analog signals to determine the absolute humidity value.

[0003] Existing absolute humidity sensor structures, such as Figure 1 As shown, the sensor head includes a metal housing assembly, which has a mounting base 200 and a mounting cover 300. The mounting base 200 and the mounting cover 300 are fixedly connected. The mounting base 200 has an upward-opening mounting chamber. A mounting block 400 is disposed inside the mounting chamber of the mounting base 200. The mounting block 400 has a mounting slot. A humidity-sensitive element 500 is embedded in the mounting slot of the mounting block 400. The pins of the humidity-sensitive element 500 are electrically connected to one end of a metal-shielded four-core wire. The other end of the metal-shielded four-core wire passes through a shielded heat-shrink tubing for heat shrinking. The core wires of the metal-shielded four-core wire pass through the shielded heat-shrink tubing and are electrically connected to a 24-bit AD acquisition CMOS microprocessor. The 24-bit AD acquisition CMOS microprocessor is electrically connected to a connector terminal, which is mounted on a connector housing. However, in actual use, due to factors such as vibration in the actual environment, the humidity sensing element 500 is prone to falling off from the mounting slot of the mounting block 400. Furthermore, since the pins of the humidity sensing element 500 are directly electrically connected to the metal shielded four-core wire, the connection is easily broken when the humidity sensing element 500 falls off, which reduces the service life of the absolute humidity sensor and reduces the overall practicality of the absolute humidity sensor.

[0004] Therefore, this utility model provides an absolute humidity sensor structure. Utility Model Content

[0005] In view of the above-mentioned problems existing in the prior art, the purpose of this utility model is to provide an absolute humidity sensor structure to increase the service life of the absolute humidity sensor and improve the overall practicality of the absolute humidity sensor.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] An absolute humidity sensor structure includes a sensor head metal housing assembly, which is provided with a mounting base and a mounting cover. The mounting base is fixedly connected to the mounting cover. The mounting base has an upward-opening mounting chamber. A mounting block is disposed inside the mounting chamber. The mounting block has a mounting slot. A humidity-sensitive element is disposed in the mounting slot. The pins of the humidity-sensitive element are electrically connected to a humidity sensing circuit board. The mounting block is connected to the humidity sensing circuit board. The humidity sensing circuit board is electrically connected to wires and cables.

[0008] As a further preferred technical solution of this utility model, the bottom surface of the mounting base is provided with several through holes, the inner side of the mounting cavity of the mounting base is provided with a snap protrusion for snapping the mounting block, the mounting base is provided with several first mounting holes evenly extending outward along the outer edge of the opening of the mounting cavity, and a snap-fit ​​edge is provided between the several first mounting holes. The mounting base is fixedly connected to the mounting cover by bending the snap-fit ​​edge, and a notch is provided on one side of the snap-fit ​​edge.

[0009] As a further preferred technical solution of this utility model, the mounting cover is provided with a plurality of second mounting holes extending evenly outward along its outer edge, the plurality of second mounting holes corresponding to the plurality of first mounting holes, and the mounting cover is also provided with a wiring end for fixing the wire and cable, the wiring end corresponding to the notch.

[0010] As a further preferred technical solution of this utility model, the mounting block is provided with a snap-fit ​​part corresponding to the snap-fit ​​protrusion of the mounting chamber, the bottom surface of the mounting hole groove of the mounting block is provided with a through hole, and the mounting block is provided with a threaded through hole for screwing the humidity sensing circuit board.

[0011] As a further preferred technical solution of this utility model, the outer contour shape of the humidity sensing circuit board is elliptical, and the humidity sensing circuit board is provided with a screw-in through hole corresponding to the threaded through hole of the mounting block.

[0012] As a further preferred technical solution of this utility model, the wire and cable includes a metal shielding wire, a shielding heat shrink tubing, a connector housing, and connector terminals. One end of the metal shielding wire is electrically connected to the humidity sensing circuit board, and the other end of the metal shielding wire passes through the shielding heat shrink tubing for heat shrinking. The core wire of the metal shielding wire is electrically connected to the connector terminals. The connector terminals are mounted on the connector housing.

[0013] As a further preferred technical solution of this utility model, the connector terminal is made of brass plated with tin.

[0014] As a further preferred technical solution of this utility model, the connector housing is an integral piece made of PA66+GF30 plastic material.

[0015] As a further preferred technical solution of this utility model, the mounting base and the mounting cover are both integral parts made of hard metal.

[0016] As a further preferred technical solution of this utility model, the mounting block is an integral piece made of hard metal.

[0017] As described above, the absolute humidity sensor structure provided by this utility model has the following beneficial effects:

[0018] This utility model utilizes the above-mentioned absolute humidity sensor structure. Compared with the prior art, due to the adoption of this structure, the mounting block has a mounting hole groove, and a humidity-sensitive element is placed in the mounting hole groove. This prevents the humidity-sensitive element from falling off under the influence of factors such as vibration in the actual environment. Furthermore, the addition of a humidity sensing circuit board as an electrical connection medium between the humidity-sensitive element and the wires and cables makes the electrical connection more reliable, increases the service life of the absolute humidity sensor, and improves the overall practicality of the absolute humidity sensor.

[0019] Additional aspects and advantages of this 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. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of an existing absolute humidity sensor;

[0022] Figure 2 This is a schematic diagram of the structure of an absolute humidity sensor according to this utility model application;

[0023] Figure 3 This is a cross-sectional view of an absolute humidity sensor structure according to this utility model application;

[0024] Figure 4This is a schematic diagram of the mounting base for an absolute humidity sensor structure according to this utility model application;

[0025] Figure 5 This is a schematic diagram of the mounting cover of an absolute humidity sensor structure according to this utility model application;

[0026] Figure 6 This is a schematic diagram of the mounting block for an absolute humidity sensor structure according to this utility model application.

[0027] Figure 7 This is an exploded view of the structure of an absolute humidity sensor according to this utility model application.

[0028] Summary of figure labels and their descriptions:

[0029] 100. Sensor head metal housing assembly; 200. Mounting base; 210. Mounting chamber; 220. Communicating hole; 230. Snap-fit ​​protrusion; 240. First mounting hole; 250. Snap-fit ​​edge; 251. Notch; 300. Mounting cover; 310. Second mounting hole; 320. Wiring end; 400. Mounting block; 410. Mounting slot; 420. Snap-fit ​​part; 430. Through hole; 440. Threaded through hole; 500. Humidity-sensitive element; 600. Humidity sensing circuit board; 700. Wires and cables. Detailed Implementation

[0030] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0031] It should be noted that the structures, proportions, and sizes depicted in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention. Specific structures can be described with reference to the accompanying drawings of the patent application.

[0032] This utility model provides an absolute humidity sensor structure. Please refer to [link / reference]. Figures 2 to 7As shown, the sensor includes a metal housing assembly 100 for a sensor head. The metal housing assembly 100 for the sensor head is provided with a mounting base 200 and a mounting cover 300. The mounting base 200 and the mounting cover 300 are fixedly connected. The mounting base 200 has a mounting chamber 210 with an upward opening. A mounting block 400 is provided inside the mounting chamber 210 of the mounting base 200. The mounting block 400 has a mounting slot 410. A humidity-sensitive element 500 is provided in the mounting slot 410 of the mounting block 400. The pins of the humidity-sensitive element 500 are electrically connected to a humidity sensing circuit board 600. The mounting block 400 is connected to the humidity sensing circuit board 600. The humidity sensing circuit board 600 is electrically connected to a wire and cable 700.

[0033] It should be noted that: the present invention utilizes the mounting block 400 with mounting holes 410, and the mounting holes 410 of the mounting block 400 with humidity-sensitive elements 500 installed in them. This design prevents the humidity-sensitive elements 500 from falling off under the influence of factors such as vibration in the actual environment. Furthermore, the addition of a humidity sensing circuit board 600 as an electrical connection medium between the humidity-sensitive elements 500 and the wires and cables 700 makes the electrical connection more reliable, increases the service life of the absolute humidity sensor, and improves the overall practicality of the absolute humidity sensor.

[0034] Specifically, the specific structure of the mounting base 200 is shown below, in conjunction with... Figure 2 , Figure 3 and Figure 4 As shown, the bottom surface of the mounting base 200 is provided with a plurality of connecting holes 220. The inner side of the mounting chamber 210 of the mounting base 200 is provided with a snap protrusion 230 for snapping the mounting block 400. The mounting base 200 is provided with a plurality of first mounting holes 240 evenly extending outward along the outer edge of the opening of the mounting chamber 210. A snap-fit ​​edge 250 is provided between the plurality of first mounting holes 240. The mounting base 200 is fixedly connected to the mounting cover 300 by bending the snap-fit ​​edge 250. A notch 251 is provided on one side of the snap-fit ​​edge 250.

[0035] Specifically, the specific structure of the mounting base 200 is shown below, in conjunction with... Figure 2 , Figure 3 and Figure 5As shown, the mounting cover 300 is provided with a plurality of second mounting holes 310 extending evenly outward along its outer edge. The plurality of second mounting holes 310 correspond to the plurality of first mounting holes 240. The mounting cover 300 is also provided with a wiring end 320 for fixing the wire and cable 700. The wiring end 320 corresponds to the notch 251.

[0036] Specifically, the specific structure of the mounting block 400 is shown below, in conjunction with... Figure 3 and Figure 6 As shown, the mounting block 400 is provided with a snap-fit ​​part 420 corresponding to the snap-fit ​​protrusion 230 of the mounting chamber 210, the bottom surface of the mounting hole groove 410 of the mounting block 400 is provided with a through hole 430, and the mounting block 400 is provided with a threaded through hole 440 for screwing the humidity sensing circuit board 600.

[0037] The humidity sensing circuit board 600 has an elliptical outer shape, and a screw-in through hole corresponding to the threaded through hole 440 of the mounting block 400 is provided on the humidity sensing circuit board.

[0038] The wire and cable 700 includes a metal shielding wire, a shielding heat shrink tubing, a connector housing, and connector terminals. One end of the metal shielding wire is electrically connected to the humidity sensing circuit board 600, and the other end of the metal shielding wire passes through the shielding heat shrink tubing for heat shrinking. The core wire of the metal shielding wire is electrically connected to the connector terminals. The connector terminals are mounted on the connector housing.

[0039] The connector terminals are made of tin-plated brass.

[0040] The connector housing is a one-piece component made of PA66+GF30 plastic.

[0041] The mounting base 200 and the mounting cover 300 are both integral pieces made of hard metal.

[0042] The mounting block 400 is a one-piece component made of hard metal.

[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An absolute humidity sensor structure, characterized in that, The device includes a sensor head metal housing assembly, which has a mounting base and a mounting cover. The mounting base and the mounting cover are fixedly connected. The mounting base has an upward-opening mounting chamber. A mounting block is disposed inside the mounting chamber. The mounting block has a mounting slot. A humidity-sensitive element is disposed in the mounting slot. The pins of the humidity-sensitive element are electrically connected to a humidity sensing circuit board. The mounting block is connected to the humidity sensing circuit board. The humidity sensing circuit board is electrically connected to wires and cables.

2. The absolute humidity sensor structure according to claim 1, characterized in that, The mounting base has several through holes on its bottom surface. The mounting cavity of the mounting base has a locking protrusion for engaging the mounting block. The mounting base has several first mounting holes that extend evenly outward from the outer edge of the opening of the mounting cavity. There are locking edges between the first mounting holes. The mounting base is fixedly connected to the mounting cover by bending the locking edges. A notch is provided on one side of the locking edges.

3. The absolute humidity sensor structure according to claim 2, characterized in that, The mounting cover is provided with a plurality of second mounting holes that extend evenly outward along its outer edge. The plurality of second mounting holes correspond to the plurality of first mounting holes. The mounting cover is also provided with a wiring end for fixing the wire and cable. The wiring end corresponds to the notch.

4. The absolute humidity sensor structure according to claim 2, characterized in that, The mounting block is provided with a snap-fit ​​part corresponding to the snap-fit ​​protrusion of the mounting chamber, the bottom surface of the mounting hole groove of the mounting block is provided with a through hole, and the mounting block is provided with a threaded through hole for screwing the humidity sensing circuit board.

5. The absolute humidity sensor structure according to claim 4, characterized in that, The humidity sensing circuit board has an elliptical outer shape, and a screw-in through hole corresponding to the threaded through hole of the mounting block is provided on the humidity sensing circuit board.

6. The absolute humidity sensor structure according to claim 1, characterized in that, The wire and cable includes a metal shielding wire, a shielding heat shrink tubing, a connector housing, and connector terminals. One end of the metal shielding wire is electrically connected to the humidity sensing circuit board, and the other end of the metal shielding wire passes through the shielding heat shrink tubing for heat shrinking. The core wire of the metal shielding wire is electrically connected to the connector terminals. The connector terminals are mounted on the connector housing.

7. The absolute humidity sensor structure according to claim 6, characterized in that, The connector terminals are made of tin-plated brass.

8. The absolute humidity sensor structure according to claim 6, characterized in that, The connector housing is a one-piece component made of PA66+GF30 plastic.

9. An absolute humidity sensor structure according to claim 2 or 3, characterized in that, Both the mounting base and the mounting cover are integral pieces made of hard metal.

10. The absolute humidity sensor structure according to claim 4, characterized in that, The mounting block is a single piece made of hard metal.

Images