Hygrothermograph

Abstract

The utility model provides a hygrothermograph which comprises a shell, a circuit board and a sealing assembly, the circuit board and the sealing assembly are arranged in the shell, the shell is provided with a through hole, a temperature and humidity detection assembly is integrated on the circuit board and comprises a probe, the probe is arranged right opposite to the through hole, and the sealing assembly is arranged in the shell. The sealing assembly comprises an abutting piece and a breathable film, the breathable film covers an opening of the through hole in the shell, and the two sides of the abutting piece abut against the circuit board and the breathable film respectively so as to fix the breathable film. A through hole is formed in a shell of the hygrothermograph, a probe of the hygrothermograph is arranged in the shell and right faces the through hole, the through hole is covered with a breathable film, and the through hole is sealed through the breathable film so that outside water drops, dust and harmful substances can be prevented from entering the shell, but water molecules or water vapor can penetrate through the breathable film, and therefore the water molecules or the water vapor can be prevented from entering the shell. Therefore, the probe can detect external temperature and humidity.

Description

Technical Field

[0001] The utility model belongs to the field of temperature and humidity detection, and specifically relates to a temperature and humidity meter. Background Art

[0002] As an important tool for measuring ambient temperature and humidity, thermometers and hygrometers are widely used in many fields such as industry, agriculture, medical treatment, and home. Its core component, the detection probe, is directly responsible for interacting with the temperature and humidity in the environment and converting these physical quantities into readable data.

[0003] Traditional thermometers and hygrometers have some inherent problems in the probe structure design. For example, the detection probe of the thermometer and hygrometer is usually designed to be exposed, that is, directly exposed to the external environment, with no or only very simple protection measures. Although this design is simple and direct, it also makes the probe extremely susceptible to external objects such as water, air, and dust. Water droplets may directly penetrate into the probe, causing a short circuit or corrosion in the circuit, resulting in failure of the thermometer and hygrometer; dust and particulate matter may cover the surface of the probe, forming a barrier layer, affecting the accuracy of temperature and humidity detection; chemicals and pollutants in the air may react chemically with the probe material, changing its physical and chemical properties, making the detection probe prone to aging during long-term use, reducing its measurement accuracy and service life.

[0004] Therefore, traditional thermometers and hygrometers have defects in probe structure design, such as being easily affected by external environmental interference, unstable detection accuracy, and short service life. They are unable to meet the needs of modern applications for high-precision and high-stability temperature and humidity measurement. Utility Model Content

[0005] The primary purpose of the present invention is to solve at least one of the above problems and provide a thermometer and hygrometer.

[0006] In order to meet the various purposes of the utility model, the utility model adopts the following technical solutions:

[0007] A thermometer and hygrometer is provided to meet one of the purposes of the utility model, including a housing, a circuit board and a sealing component arranged in the housing.

[0008] The housing is provided with a through hole,

[0009] The circuit board is integrated with a temperature and humidity detection component, and the temperature and humidity detection component includes a probe, and the probe is arranged directly opposite to the through hole.

[0010] The sealing component comprises a contact piece and a breathable membrane. The breathable membrane covers the opening of the through hole in the housing. Two sides of the contact piece respectively contact the circuit board and the breathable membrane to fix the breathable membrane.

[0011] Furthermore, a mounting hole is provided in the abutment member, and the mounting hole accommodates the probe, so that the probe detects the temperature and humidity of the external environment through the breathable membrane.

[0012] Furthermore, two sides of the breathable membrane cover the through hole and the mounting hole respectively, and the aperture of the mounting hole is greater than or equal to the aperture of the through hole.

[0013] Specifically, the breathable membrane is provided with a plurality of membrane holes, and the pore diameter of the membrane holes is 0.1-10 μm.

[0014] Specifically, the abutment member and the breathable membrane have a transition fit or an interference fit.

[0015] In one embodiment, a support frame is further provided in the outer shell, the circuit board is arranged on the support surface of the support frame, the outer shell includes a top plate, the through hole is arranged on the top plate, the top plate is arranged parallel to the support surface, and the distance between the top plate and the support surface is less than or equal to the sum of the thickness of the circuit board and the height of the abutment member.

[0016] In one embodiment, the housing comprises a shell and a bottom cover which are assembled together, a convex edge is provided on the edge of the bottom cover, and an annular groove is provided on the convex edge.

[0017] The shell includes a plurality of side plates, which are connected and arranged in sequence around the edge of the bottom cover, the opening of the annular groove faces the side plate, the annular groove cooperates with the plurality of side plates to form a sealing ring hole, and a flexible sealing member is correspondingly arranged in the sealing ring hole.

[0018] In one embodiment, the shell includes a shell and a decorative cover, a mounting groove is provided on the top plate of the shell, the decorative cover is arranged in the mounting groove, and at least one ultrasonic line is provided between the decorative cover and the mounting groove, the ultrasonic line is melted by ultrasound, and the decorative cover and the mounting groove are connected after condensation.

[0019] Specifically, a power supply component is further provided in the housing, and the power supply component includes a battery compartment, and the battery compartment is electrically connected to the circuit board.

[0020] Specifically, a control unit is integrated on the circuit board, and the control unit is electrically connected to the temperature and humidity component. The temperature and humidity component outputs the temperature and humidity signals acquired by the probe detection to the control unit, and the control unit converts the temperature and humidity signals into temperature and humidity information.

[0021] Compared with the prior art, the present invention has many advantages, including but not limited to:

[0022] On the one hand, a through hole is provided on the shell of the thermometer and hygrometer of the utility model, and a probe is arranged in the shell, the probe is directly facing the through hole, and a breathable membrane is covered on the through hole. The breathable membrane blocks external water droplets, dust and large particles of harmful substances from invading the shell, thereby protecting the electronic components of the thermometer and hygrometer, especially the probe, thereby getting rid of external environmental interference, improving detection accuracy and extending service life; and the breathable membrane can pass water molecules or water vapor, so that the probe arranged in the shell can detect temperature and humidity data of the external environment.

[0023] On the other hand, the abutment member abuts the breathable membrane against the outer shell so that the breathable membrane will not fall off the through hole. The breathable membrane can cover the through hole well, maintain the structural stability of the thermometer and hygrometer, and enable the breathable membrane to continuously block water droplets, dust and large particles of harmful substances to protect the electronic devices inside the thermometer and hygrometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0025] Figure 1 It is a three-dimensional schematic diagram of a thermometer and hygrometer according to a typical embodiment of the utility model.

[0026] Figure 2 The figure is an exploded diagram of a thermometer and hygrometer according to a typical embodiment of the utility model.

[0027] Figure 3 The figure is a schematic diagram of the circuit principle of the thermometer and hygrometer according to a typical embodiment of the utility model.

[0028] Figure 4 It is a partial structural schematic diagram of a thermometer and hygrometer of a typical embodiment of the utility model.

[0029] Figure 5 The figure is a schematic structural diagram of a decorative cover of a thermometer and hygrometer according to a typical embodiment of the utility model.

[0030] Figure 6 The figure is a schematic structural diagram of the housing of a thermometer and hygrometer according to a typical embodiment of the utility model.

[0031] Figure 7 It is a cross-sectional schematic diagram of a thermometer and hygrometer according to a typical embodiment of the utility model.

[0032] Figure 8 for Figure 7 A magnified view of part A.

[0033] Fig. 9 for Figure 7 Enlarged view of part B. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and cannot be interpreted as limiting the present invention.

[0035] It will be understood by those skilled in the art that, unless expressly stated, the singular forms "one", "said", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or their groups. It should be understood that when we say that an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may be intermediate elements. In addition, the "connection" or "coupling" used here may include wireless connection or wireless coupling. The term "and / or" used here includes all or any unit and all combinations of one or more associated listed items.

[0036] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of ordinary technicians in the field to which the utility model belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as the meaning in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0037] The utility model provides a thermometer and hygrometer, wherein a through hole is provided on a shell of the thermometer and hygrometer, a probe of the thermometer and hygrometer is arranged in the shell, and the probe is arranged directly opposite to the through hole, a breathable film is covered on the through hole, and the through hole is closed by the breathable film to prevent external water droplets, dust and harmful substances from entering the shell, but air and water molecules can pass through the breathable film, so that the probe can detect external temperature and humidity.

[0038] In a typical embodiment of the present invention, Figure 1 and Figure 2 The thermometer and hygrometer 100 includes a housing 110 , a circuit board 120 and a sealing component. The circuit board 120 and the sealing component are disposed in the housing 110 .

[0039] Combination Figure 3The circuit board 120 is integrated with a temperature and humidity detection component 140 and a control unit 151, and the control unit 151 is electrically connected to the temperature and humidity detection component 140. The temperature and humidity detection component 140 includes a temperature and humidity detection circuit 141 and a probe 142, and the probe 142 includes a temperature detection element 143 and a humidity detection element 144, and the temperature detection element 143 and the humidity detection element 144 are electrically connected to the temperature and humidity detection circuit 141, respectively.

[0040] After the temperature detection element 143 detects and obtains the temperature signal, the temperature and humidity detection component 140 outputs the temperature signal to the control unit 151, and the control unit 151 converts the temperature signal into temperature information; after the humidity detection element 144 detects and obtains the humidity signal, the temperature and humidity detection component 140 outputs the humidity signal to the control unit 151, and the control unit 151 converts the humidity signal into humidity information.

[0041] Combination Figure 1 , Figure 2 and Figure 8 The housing 110 is provided with a through hole 1111, and outside air can enter the housing 110 through the through hole 1111. The probe 142 is arranged opposite to the through hole 1111, so that the probe 142 can quickly detect the temperature and humidity data of the outside environment. In this embodiment, the housing 110 includes a top plate 111, and the through hole 1111 is arranged in the top plate 111. The circuit board 120 is arranged in parallel with the top plate 111, and the probe 142 and the through hole 1111 are arranged relative to each other.

[0042] The sealing assembly includes a breathable membrane 131 and abutment 132. The through hole 1111 includes two openings. The opening arranged in the housing 110 is called the first opening 1112. The breathable membrane 131 covers the first opening 1112, that is, the first opening 1112 is closed by the breathable membrane 131 to prevent water droplets, dust and harmful substances from the external environment from entering the housing 110 through the first opening 1112, thereby protecting the circuit on the circuit board 120, especially protecting the probe 142.

[0043] The air permeable membrane 131 is provided with a plurality of membrane holes (not shown), and the aperture of the membrane holes is 0.1-10 μm. Since the aperture of the membrane holes is 0.1-10 μm, water droplets, dust and large particles of harmful substances cannot pass through the membrane holes, thereby preventing water droplets, dust and large particles of harmful substances from invading the housing 110 through the air permeable membrane 131, so as to protect the electronic circuit of the thermometer hygrometer 100.

[0044] In addition, the water droplet is a whole, and there is an interaction force between the water molecules in the water droplet, so that the water molecules in the water droplet are closely connected to form a relatively stable whole. This allows the water droplet to maintain its shape under normal conditions and will not spontaneously disperse into individual water molecules, so that when the water droplet falls on the breathable membrane 131, the water molecules on the water droplet will not separate from the water droplet, and it can be understood that the water molecules on the water droplet will not pass through the breathable membrane 131 and enter the housing 110.

[0045] However, the water molecules or water vapor in the air are in a free state and have a small volume, so that the water molecules or water vapor in the external environment can enter the housing 110 through the membrane holes, so that the probe 142 can detect the external humidity.

[0046] Thus, water droplets, dust and large particles of harmful substances can be blocked by the breathable membrane 131 , but water molecules or water vapor from the external environment can enter the housing 110 through the breathable membrane 131 , so that the probe 142 can detect the external humidity.

[0047] The abutment member 132 is disposed in the outer shell 110, and is used to abut the breathable membrane 131 against the top plate 111, so that the breathable membrane 131 can stably cover the first opening 1112 without falling from the first opening 1112, thereby enabling the breathable membrane 131 to effectively block water droplets, dust and large particles of harmful substances in the external environment.

[0048] The abutment member 132 is disposed on the circuit board 120, and the circuit board 120 is disposed parallel to and spaced from the top plate 111. Two sides of the abutment member 132 abut against the circuit board 120 and the breathable membrane 131 respectively, that is, the breathable membrane 131 abuts against the top plate 111.

[0049] Specifically, combined Figure 4 and Figure 6 The circuit board 120 includes a first surface 121, the top plate 111 includes a second surface 1113, the first surface 121 and the second surface 1113 are arranged opposite to each other, the first opening 1112 is opened on the second surface 1113, and the probe 142 is arranged on the first surface 121. Figure 8 The two ends of the abutment member 132 abut against the first surface 121 and the second surface 1113 respectively, so that the abutment member 132 can be stably arranged in the housing 110, so that the abutment member 132 can stably abut the breathable membrane 131 against the second surface 1113, and the breathable membrane 131 will not fall from the first opening 1112, thereby maintaining the structural stability of the thermometer and hygrometer 100.

[0050] The abutment member 132 and the breathable membrane 131 are transitionally fitted or interference fit to eliminate the gap between the breathable membrane 131 and the second surface 1113, so that water droplets, dust and large particles of harmful substances in the external environment cannot enter the housing 110 through the gap between the breathable membrane 131 and the second surface 1113, thereby protecting the electronic components in the housing 110.

[0051] In the typical embodiment of the present utility model, combined with Figure 2 , Figure 4 and Figure 8 The abutting member 132 is provided with a mounting hole 1321, the mounting hole 1321 is a through hole, and the two openings of the mounting hole 1321 are respectively a second opening and a third opening 1323. The abutting member 132 is disposed on the first surface 121, and the first surface 121 closes the second opening. The abutting member 132 abuts against the second surface 1113 to abut the breathable membrane 131 against the second surface 1113, so that the breathable membrane 131 closes the third opening 1323.

[0052] The diameter of the mounting hole 1321 is greater than or equal to the diameter of the through hole 1111, so that the area of ​​the third opening 1323 is greater than or equal to the area of ​​the first opening 1112. When the mounting hole 1321 is in contact with the through hole 1111, the first opening 1112 is located inside the third opening 1323, or the first opening 1112 and the third opening 1323 overlap, so that the abutting member 132 can well abut the breathable membrane 131 against the second surface 1113.

[0053] Because the breathable membrane 131 covering the first opening 1112 also covers the third opening 1323 of the mounting hole 1321, the mounting hole 1321, the first surface 121 and the breathable membrane 131 are surrounded to form a breathable and closed space. Figure 4 and Figure 8 The probe 142 is disposed in the mounting hole 1321, that is, the probe 142 is disposed in the airtight closed space. When external water molecules or water vapor enter the airtight closed space through the membrane holes on the air-permeable membrane 131, the water molecules or water vapor cannot further intrude into the housing 110 due to the blocking of the mounting hole 1321 and the first surface 121, so as to protect the electronic components of the thermometer hygrometer 100.

[0054] In one embodiment, the abutment member 132 is made of a silicone material, which is an airtight material, so that water molecules or water vapor cannot penetrate from the mounting hole 1321 and the circuit board 120 to the inside of the housing 110. In addition, the abutment member 132 also has a buffering effect. When the top plate 111 is subjected to an external force, the abutment member 132 made of the silicone material can buffer the external force, thereby preventing the thermohygrometer 100 from being damaged by the external force.

[0055] In one embodiment, in combination Figure 2 , Figure 3 and Figure 7 The housing 110 is further provided with a support frame 161, and the housing 110 further includes a bottom cover 112, the bottom cover 112 is arranged opposite to the top plate 111, and the support frame 161 is arranged on the bottom cover 112. The support frame 161 is provided with a support surface 1611, the support surface 1611 is arranged opposite to the second surface 1113 of the top plate 111, and the circuit board 120 is arranged on the support surface 1611. The support surface 1611 is parallel to the second surface 1113, and the distance between the support surface 1611 and the second surface 1113 is less than or equal to the sum of the thickness of the circuit board 120 and the height of the abutment 132, so that the abutment 132 and the second surface 1113 are transitionally matched or interference matched, so that the abutment 132 can stably abut the breathable membrane 131 on the second surface 1113.

[0056] In one embodiment, in combination Figure 2 and Fig. 9 The housing 110 includes a shell 118 and a bottom cover 112, and the bottom cover 112 is buckled with the shell 118. A convex edge 1121 is provided on the edge of the bottom cover 112, and the convex edge 1121 is extended along the edge of the bottom cover 112 to form a convex edge 1121 with an annular structure. An annular groove 1122 is provided on the convex edge 1121, and the annular groove 1122 extends along the extension direction of the convex edge 1121 to form the annular groove 1122 with an annular structure.

[0057] The housing 118 further includes a plurality of side panels 113, which are sequentially connected and arranged along the edge of the bottom cover 112. The opening of the annular groove 1122 is arranged toward the side panel 113, and the annular groove 1122 cooperates with the plurality of side panels 113 to form a sealing ring hole 114. A flexible sealing member 171 is arranged in the sealing ring hole 114, and the flexible sealing member 171 is extended along the extension direction of the sealing ring hole 114, so that the flexible sealing member 171 forms an annular structure. The flexible sealing member 171 can prevent external water droplets or water vapor from entering the housing 110 through the gap between the housing 118 and the bottom cover 112, so as to protect the electronic components of the thermometer hygrometer 100.

[0058] In one embodiment, in combination Figure 7 The housing 110 is also provided with a power supply assembly, which includes a battery compartment 152. The battery compartment 152 is electrically connected to the circuit on the circuit board 120. The battery compartment 152 can accommodate a battery 153. The battery 153 supplies power to the circuit on the circuit board 120 through the battery compartment 152. By removing the bottom cover 112, the battery 153 can be installed or replaced in the battery compartment 152.

[0059] In one embodiment, in combination Figure 2 The top plate 111 further includes a third surface 1114, which is disposed opposite to the second surface 1113 and is disposed outside the housing 110. The top plate 111 is further provided with an assembly groove 115, which is recessed from the third surface 1114 toward the second surface 1113. The housing 110 is further provided with a decorative cover 116, which is assembled in the assembly groove 115. The decorative cover 116 is provided to improve the aesthetics of the thermohygrometer 100.

[0060] In a further embodiment, in combination Figure 2 and Figure 5 At least one ultrasonic line 117 is provided between the decorative cover 116 and the bottom of the assembly groove 115. The high-frequency vibration of the ultrasonic wave melts the ultrasonic line 117, so that the ultrasonic line 117 in a molten state merges with the decorative cover 116 and the bottom of the assembly groove 115 respectively. After the molten ultrasonic line 117 cools and solidifies, it fixes and connects the decorative cover 116 and the assembly groove 115 respectively, so that the decorative cover 116 and the assembly groove 115 can be stably connected.

[0061] In this embodiment, an ultrasonic line (referred to as the first ultrasonic line 1171) is provided on the decorative cover 116, and the first ultrasonic line 1171 extends along the edge of the decorative cover 116 to form an annular structure. An ultrasonic line (referred to as the second ultrasonic line 1172) is provided on the assembly groove 115, and the second ultrasonic line 1172 extends along the edge of the groove bottom of the assembly groove 115 to form an annular structure. The decorative cover 116 and the assembly groove 115 can be firmly connected by the first ultrasonic line 1171 and the second ultrasonic line 1172. Preferably, a plurality of ultrasonic lines can be further provided on the decorative cover 116, so that the decorative cover 116 and the assembly groove 115 are further firmly connected.

[0062] In summary, the thermometer and hygrometer of the utility model sets a breathable membrane on the through hole of the shell to prevent external water droplets, dust and large particles of harmful substances from entering the shell to protect the electronic components of the thermometer and hygrometer, but the breathable membrane allows small volume water molecules or water vapor to pass through, so that the probe facing the through hole can detect the temperature and humidity of the external environment.

[0063] The above description is only a preferred embodiment of the utility model and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the utility model is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the above utility model. For example, the above features are replaced with the technical features of the utility model (but not limited to) with similar functions in the utility model of the utility model to form a technical solution.

[0064] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

Claims

1. A thermometer and hygrometer, characterized in that: It comprises a housing, a circuit board and a sealing component arranged in the housing, The housing is provided with a through hole, The circuit board is integrated with a temperature and humidity detection component, and the temperature and humidity detection component includes a probe, and the probe is arranged directly opposite to the through hole. The sealing component comprises a contact piece and a breathable membrane. The breathable membrane covers the opening of the through hole in the housing. Two sides of the contact piece respectively contact the circuit board and the breathable membrane to fix the breathable membrane.

2. The thermometer and hygrometer according to claim 1, characterized in that: The abutment member is provided with a mounting hole, and the mounting hole accommodates the probe so that the probe detects the temperature and humidity of the external environment through the breathable membrane.

3. The thermometer and hygrometer according to claim 2, characterized in that: The two sides of the breathable membrane cover the through hole and the mounting hole respectively, and the aperture of the mounting hole is greater than or equal to the aperture of the through hole.

4. The thermometer and hygrometer according to claim 1, characterized in that: The breathable membrane is provided with a plurality of membrane holes, and the pore diameter of the membrane holes is 0.1-10 μm.

5. The thermometer and hygrometer according to any one of claims 1 to 3, characterized in that: The abutment member and the breathable membrane are transitionally fitted or interference fit.

6. The thermometer and hygrometer according to claim 1 or 2, characterized in that: A support frame is also provided in the shell, the circuit board is arranged on the support surface of the support frame, the shell includes a top plate, the through hole is arranged on the top plate, the top plate is arranged parallel to the support surface, and the distance between the top plate and the support surface is less than or equal to the sum of the thickness of the circuit board and the height of the abutment member.

7. The thermometer and hygrometer according to claim 1, characterized in that: The housing comprises a shell and a bottom cover which are assembled together. The edge of the bottom cover is provided with a convex edge, and the convex edge is provided with an annular groove. The shell includes a plurality of side plates, which are connected and arranged in sequence around the edge of the bottom cover, the opening of the annular groove faces the side plate, the annular groove cooperates with the plurality of side plates to form a sealing ring hole, and a flexible sealing member is correspondingly arranged in the sealing ring hole.

8. The thermometer and hygrometer according to claim 1, characterized in that: The shell includes a shell and a decorative cover. An assembly groove is provided on the top plate of the shell. The decorative cover is arranged in the assembly groove. At least one ultrasonic line is provided between the decorative cover and the assembly groove. The ultrasonic line is melted by ultrasound and condensed to connect the decorative cover and the assembly groove.

9. The thermometer and hygrometer according to claim 1, characterized in that: A power supply component is also arranged in the shell, and the power supply component includes a battery compartment, and the battery compartment is electrically connected to the circuit board.

10. The thermometer and hygrometer according to claim 1, characterized in that: A control unit is integrated on the circuit board, and the control unit is electrically connected to the temperature and humidity component. The temperature and humidity component outputs the temperature and humidity signals acquired by the probe detection to the control unit, and the control unit converts the temperature and humidity signals into temperature and humidity information.

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