Thermistor sensor with good sealing performance

Abstract

The utility model provides a thermistor sensor with good sealing performance, which comprises a thermal resistor, a connecting lead, a protective device and a fixing device, one side of the fixing device is movably connected with one end of the protective device, the thermal resistor is arranged in the protective device, and the thermal resistor is connected with an external processor through the connecting lead. The thermal resistor is connected with the connecting wire and placed in the protection device, the sealing block on the first protection plate and the sealing groove in the second protection plate are correspondingly spliced together, the first protection plate and the second protection plate form a complete threaded ring, the threaded ring and the concave threaded groove in one side of the fixing device are correspondingly rotated, and the thermal resistor is placed in the protection device. Through rotation and cooperation of the threads, the protection device and the fixing cover can form very firm connection to ensure the sealing performance of the device, the device is convenient to disassemble, and the problem that the sealing performance of the protection shell of the structure is poor due to the fact that the shell is simple in structure and not firm in splicing is solved.

Description

Technical Field

[0001] The utility model relates to the field of thermistor sensors, in particular to a thermistor sensor with good sealing performance. Background Art

[0002] A thermistor sensor is a sensitive element that can significantly change its resistance value with changes in temperature. It is made of semiconductor materials, and its resistivity is extremely sensitive to changes in temperature. The resistance of the thermistor sensor will change with changes in temperature, thereby converting the temperature signal into an electrical signal for output. Thermistor sensors are widely used in temperature measurement, temperature control, temperature compensation, liquid level control, flow rate measurement, flow display and automatic gain control. Due to their high sensitivity, fast response speed, small size, simple structure and low price, thermistor sensors have been widely used in automation control and temperature measurement.

[0003] Most of the existing thermistor sensors directly connect the thermistor to the wire, and then put the thermistor into a protective casing. Since the protective casing is usually spliced ​​by two identical casings, which are usually glued together, the thermistor generates heat during use. During long-term use, the solvent components in the glue will evaporate at high temperatures, causing the glue to dry and lose its viscosity, resulting in poor sealing of the device, which can easily cause water vapor to enter the interior and corrode the thermistor, resulting in inaccuracy of the equipment.

[0004] Therefore, it is necessary to provide a new thermistor sensor with good sealing performance to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a thermistor sensor with good sealing performance.

[0006] The thermistor sensor with good sealing performance provided by the utility model comprises: a thermal resistor, a connecting wire, a protective device and a fixing device, one side of the fixing device is movably connected to one end of the protective device, the thermal resistor is installed inside the protective device, and the thermal resistor is connected to an external processor through the connecting wire;

[0007] The protective device includes a first protective plate and a second protective plate. The adjacent ends of the first protective plate and the second protective plate are provided with semi-convex thread grooves. The first protective plate and the second protective plate can form a complete thread circle after being spliced. The direction of the thread circle is clockwise. The fixing device is provided with a concave thread groove matching the thread circle. The end of the first protective plate close to the semi-thread groove is provided with a plurality of evenly arranged sealing blocks. The end of the second protective plate close to the semi-thread groove is provided with a plurality of evenly distributed sealing grooves. The positions of the plurality of sealing grooves correspond to the plurality of sealing blocks.

[0008] Preferably, one end of the first protective plate and the second protective plate away from the semi-thread groove is fixedly connected to a sealing rubber block.

[0009] Preferably, the fixing device includes a fixing cover and two connecting components, a connecting groove is provided on one side of the fixing cover, a concave thread groove is provided in the connecting groove, the concave thread groove is clockwise, the concave thread groove corresponds to the convex thread circle, one side of the concave thread groove of the fixing cover is connected to the protective device through threaded patterns, and the two connecting components are respectively used to fix the head and tail of the first protective plate and the second protective plate.

[0010] Preferably, the connecting assembly includes a first connecting ring, a second connecting ring and a connecting piece. The first connecting ring and the second connecting ring are arranged opposite to each other. The adjacent sides of the first connecting ring and the second connecting ring are provided with connecting blocks. The first connecting ring and the second connecting ring are connected by the connecting piece. There are two groups of the connecting assembly.

[0011] Preferably, the connecting member is a bolt, and there are two bolts in total, and the two bolts respectively penetrate the four connecting blocks.

[0012] Preferably, the first connecting ring and the second connecting ring are both arc-shaped, and the first connecting ring and the second connecting ring are respectively sleeved on both sides of the first protective plate and the second protective plate.

[0013] Preferably, the first connecting ring and the second connecting ring are both arc-shaped, and the first connecting ring and the second connecting ring are respectively sleeved on both sides of the first protective plate and the second protective plate.

[0014] Compared with the related art, the thermistor sensor with good sealing performance provided by the utility model has the following beneficial effects:

[0015] The utility model provides a thermistor sensor with good sealing performance. During specific implementation, the thermal resistor is connected to a connecting wire, the thermal resistor is placed in a protective device, and the sealing block on the first protective plate is correspondingly spliced ​​with the sealing groove on the second protective plate. When the sealing block is spliced ​​with the sealing groove, the sealing block will be compressed to a certain extent. This compression effect can enhance the contact pressure between the sealing block and the sealing groove, so that they fit more closely together. This close contact can prevent media such as liquid, gas or dust from penetrating through the gap, thereby ensuring the sealing performance of the entire device. The first protective plate and the second protective plate form a complete threaded ring, and the threaded ring and the concave threaded groove on one side of the fixing device are rotated correspondingly. Through the rotation and matching of the thread, the spiral shape of the protective device and the fixing cover thread enables the threaded ring and the concave threaded groove to automatically find the best during the rotation process to ensure that the fixing device and the protective device always maintain a stable sealing effect during the tightening process. At this time, the entire device is fixed together, so that the overall sealing performance is high, and the above-mentioned device has the function of recycling, and can also reduce the overall cost to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of a preferred embodiment of a thermistor sensor with good sealing performance provided by the utility model;

[0017] Figure 2 Another perspective structural schematic diagram of the thermistor sensor with good sealing performance provided by the utility model;

[0018] Figure 3 The overall structure splitting diagram provided by the utility model;

[0019] Figure 4 A schematic diagram of the structure of the protective device provided by the utility model;

[0020] Figure 5 A schematic diagram of another state of the protective device provided by the utility model.

[0021] Numbers in the figure: 1. first protective plate; 2. second protective plate; 3. sealing block; 4. sealing groove; 5. semi-convex thread groove; 6. fixing cover; 7. connecting groove; 8. concave thread groove; 9. first connecting ring; 10. second connecting ring; 11. bolt; 12. connecting block; 13. sealing rubber block; 14. thermal resistor; 15. connecting wire. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0023] Please refer to Figure 1-Figure 5 ,in, Figure 1A structural schematic diagram of a preferred embodiment of a thermistor sensor with good sealing performance provided by the utility model; Figure 2 Another perspective structural schematic diagram of the thermistor sensor with good sealing performance provided by the utility model; Figure 3 The overall structure splitting diagram provided by the utility model; Figure 4 A schematic diagram of the structure of the protective device provided by the utility model; Figure 5 A schematic diagram of another state of the protective device provided by the utility model.

[0024] In the specific implementation process, Figure 1-Figure 5 As shown, the thermistor sensor with good sealing performance provided by the utility model includes: a thermal resistor 14, a connecting wire 15, a protective device and a fixing device, one side of the fixing device is movably connected to one end of the protective device, the thermal resistor 14 is installed inside the protective device, and the thermal resistor 14 is connected to an external processor through the connecting wire 15.

[0025] The protective device is composed of a first protective plate 1 and a second protective plate 2. The first protective plate 1 and the second protective plate 2 are provided with a semi-convex thread groove 5 at the adjacent ends. The first protective plate 1 and the second protective plate 2 can form a complete thread groove after being spliced. The thread ring direction is clockwise. The fixing device is provided with a concave thread groove 8 matching the semi-convex thread groove 5. The end of the first protective plate 1 close to the thread groove is provided with a plurality of sealing blocks 3 arranged evenly. The end of the second protective plate 2 close to the thread groove is provided with a plurality of sealing grooves 4 evenly distributed. The positions of the plurality of sealing grooves 4 correspond to the plurality of sealing blocks 3. It is mentioned here that the sealing block is made of rubber material, and the sealing block and the sealing groove fit closely to further ensure the sealing performance of the device.

[0026] The first protective plate 1 and the second protective plate 2 are fixedly connected with a sealing rubber block 13 at one end away from the thread groove. After the first sealing plate and the second sealing plate are assembled, the two sealing rubber blocks will fit tightly together to improve the sealing performance of the connecting wires.

[0027] The fixing device includes a fixing cover 6 and two connecting components. A connecting groove 7 is provided on one side of the fixing cover 6. A concave thread groove 8 is provided in the connecting groove 7. The concave thread groove 8 is clockwise and corresponds to the semi-convex thread groove 5. One side of the concave thread groove 8 of the fixing cover 6 is connected to the protective device through threaded patterns. The two connecting components are respectively used to fix the head and tail of the first protective plate 1 and the second protective plate 2. The two connecting components are distributed at the head and tail of the protective device, so that the first protective plate and the second protective plate fit more closely, thereby ensuring the sealing of the side of the protective device.

[0028] The connecting assembly includes a first connecting ring 9, a second connecting ring 10 and a connecting piece. The first connecting ring 9 and the second connecting ring 10 are arranged opposite to each other. The adjacent sides of the first connecting ring 9 and the second connecting ring 10 are provided with connecting blocks 12. The first connecting ring 9 and the second connecting ring 10 are connected by a connecting piece. The connecting piece is a bolt 11. There are two bolts 11. The two bolts 11 respectively pass through four connecting blocks 12. The first connecting ring and the second connecting ring can be turned to fix the first protective plate and the second protective plate more compactly.

[0029] The first connecting ring 9 and the second connecting ring 10 are both arc-shaped, and the first connecting ring 9 and the second connecting ring 10 are respectively sleeved on both sides of the first protective plate 1 and the second protective plate 2 .

[0030] The working principle provided by the utility model is as follows: first, a thermal resistor 14 is placed into the first protective plate 1, a connecting wire 15 is connected to the thermal resistor 14, the connecting wire 15 is placed into the sealing rubber block 13 of the first protective plate 1, the second protective plate 2 is correspondingly spliced ​​with the first protective plate 1, the threaded ring composed of the first protective plate 1 and the second protective plate 2 is connected to the side of the fixing cover 6 with the connecting groove 7, and the threaded ring and the concave thread groove 8 on one side of the fixing cover 6 are rotated accordingly, and through the rotation and matching of the thread, the spiral shape of the threaded ring and the concave thread groove 8 of the fixing cover 6 enables the threaded ring and the concave thread groove 8 to automatically find the best during the rotation process to ensure that the fixing device and the protective device A stable sealing effect is always maintained during the tightening process. The first connecting ring 9 and the second connecting ring 10 are relatively sleeved on the head and tail of the first connecting plate 1 and the second connecting plate 2. The bolt 11 is passed through the connecting block 12 of the first connecting ring 9 and the second connecting ring 10. The first connecting ring 9 and the second connecting ring 10 are connected by rotating the bolt 11 according to the size of the protective device to fix the first protective plate 1 and the second protective plate 2. The connecting wire 15 can also be sealed due to the sealing rubber block 13, which solves the problem of poor sealing caused by the unreliable assembly of the thermal resistor housing protective device, which easily causes water vapor to enter the interior and corrode the thermal resistor, resulting in inaccuracy of the equipment.

[0031] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0032] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A thermistor sensor with good sealing performance, characterized in that: include: A thermal resistor (14), a connecting wire (15), a protective device and a fixing device, one side of the fixing device is movably connected to one end of the protective device, the thermal resistor (14) is installed inside the protective device, and the thermal resistor (14) is connected to an external processor via the connecting wire (15); The protective device is composed of a first protective plate (1) and a second protective plate (2); the first protective plate (1) and the second protective plate (2) are both provided with a semi-convex thread groove (5) at their adjacent ends; the two semi-convex thread grooves (5) of the first protective plate (1) and the second protective plate (2) can form a complete thread circle after being spliced; the direction of the thread circle is clockwise; a concave thread groove (8) matching the thread circle formed by the first protective plate and the second protective plate is provided on the fixing device; a plurality of sealing blocks (3) arranged evenly are provided at one end of the first protective plate (1) close to the semi-convex thread groove; a plurality of sealing grooves (4) arranged evenly are provided at one end of the second protective plate (2) close to the semi-convex thread groove; the positions of the plurality of sealing grooves (4) and the plurality of sealing blocks (3) correspond to each other.

2. The thermistor sensor with good sealing performance according to claim 1, characterized in that: The first protective plate (1) and the second protective plate (2) are both fixedly connected to a sealing rubber block (13) at one end away from the thread groove.

3. The thermistor sensor with good sealing performance according to claim 2, characterized in that: The fixing device comprises a fixing cover (6) and two connecting components. A connecting groove (7) is provided on one side of the fixing cover (6). A concave thread groove (8) is provided in the connecting groove (7). The concave thread groove (8) is clockwise and corresponds to the thread ring formed by the first protective plate and the second protective plate. The two connecting components are used to fix the head and tail of the first protective plate (1) and the second protective plate (2), respectively.

4. The thermistor sensor with good sealing performance according to claim 3, characterized in that: The connection assembly comprises a first connection ring (9), a second connection ring (10) and a connection piece. The first connection ring (9) and the second connection ring (10) are arranged opposite to each other. The adjacent sides of the first connection ring (9) and the second connection ring (10) are provided with connection blocks (12). The first connection ring (9) and the second connection ring (10) are connected via the connection piece.

5. The thermistor sensor with good sealing performance according to claim 4, characterized in that: The connecting member is a bolt (11), and there are two bolts (11) in total. The two bolts (11) respectively penetrate the four connecting blocks (12).

6. The thermistor sensor with good sealing performance according to claim 5, characterized in that: The first connecting ring (9) and the second connecting ring (10) are both arc-shaped, and the first connecting ring (9) and the second connecting ring (10) are respectively sleeved on both sides of the first protective plate (1) and the second protective plate (2).

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