Double-layer sealed thermistor

Abstract

The utility model relates to the technical field of thermistors, in particular to a double-layer sealed thermistor which comprises a thermistor body, pins, a wire and a first sealing tube, the pins are fixed to the side wall of the thermistor body, the ends of the wire abut against the ends of the pins, and the first sealing tube is fixed to the side wall of the thermistor body. The side wall of the pin and the side wall of the wire are both fixed to the inner wall of the first sealing pipe, a second sealing pipe is fixed to the side wall of the wire, the side wall of the thermistor is fixed to the inner wall of the second sealing pipe, and the side wall of the first sealing pipe is fixed to the inner wall of the second sealing pipe. When the thermistor is used for a long time, the water inflow possibility of the thermistor is reduced, so that the service life of the thermistor is prolonged.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of thermistors, in particular to a double-layer sealed thermistor. BACKGROUND

[0002] A thermistor is a special semiconductor resistor, and the resistance value of the thermistor decreases with the increase of temperature. The thermistor is widely used in the fields of temperature measurement, temperature control, power surge suppression, temperature compensation and the like. When the thermistor is used in wiring, the thermistor needs to be sealed.

[0003] At present, a heat shrink tube is usually used to seal the thermistor. A worker selects a heat shrink tube with a corresponding size according to the size of the thermistor. At this time, the worker connects two pins of the thermistor with wires. Then, the worker sleeves the heat shrink tube on the side wall of the thermistor. The heat shrink tube completely covers the thermistor and the wires. The worker heats the heat shrink tube by using a hot air gun. The heat shrink tube uniformly shrinks until the heat shrink tube is completely shrunk.

[0004] The above thermistor is single-layer sealed. When the thermistor is used for a long time, the thermistor is prone to water ingress, thereby reducing the service life of the thermistor, and there is room for improvement. CONTENT OF THE INVENTION

[0005] In order to reduce the possibility of water ingress of the thermistor when the thermistor is used for a long time, thereby improving the service life of the thermistor, the application provides a double-layer sealed thermistor.

[0006] The application provides a double-layer sealed thermistor, which adopts the following technical scheme:

[0007] The double-layer sealed thermistor comprises a thermistor, a pin, a wire and a first sealing tube. The pin is fixed to the side wall of the thermistor. The end of the wire is in abutment with the end of the pin. The side wall of the pin and the side wall of the wire are both fixed to the inner wall of the first sealing tube. The side wall of the wire is fixed with a second sealing tube. The side wall of the thermistor is fixed to the inner wall of the second sealing tube. The side wall of the first sealing tube is fixed to the inner wall of the second sealing tube.

[0008] By adopting the above technical scheme, when a worker seals the thermistor, the worker abuts the end of the pin with the end of the wire. At this time, the worker seals the pin by using the first sealing tube. The side wall of the wire is fixed to the inner wall of the first sealing tube. The worker seals the thermistor by using the second sealing tube. The side wall of the thermistor is fixed to the inner wall of the second sealing tube. The side wall of the first sealing tube is fixed to the inner wall of the second sealing tube. This arrangement reduces the possibility of water ingress of the thermistor when the thermistor is used for a long time, thereby improving the service life of the thermistor.

[0009] Optionally, the side wall of the second sealing tube is fixed with a clamping sheet, and an end of the clamping sheet is away from the second sealing tube.

[0010] By adopting the technical scheme, the clamping sheet is arranged to facilitate the fixation of the second sealing tube, so that the installation process of the second sealing tube is simpler, and the thermistor is facilitated to work stably.

[0011] Optionally, the side wall of the second sealing tube is fixed with a clamping block, and the side wall of the clamping block is in abutment with the inner wall of the clamping groove.

[0012] By adopting the technical scheme, when the staff places the clamping sheet, the staff clamps and fixes the clamping sheet to the side wall of the second sealing tube through the clamping block and the clamping groove, which saves the space occupied by the second sealing tube and facilitates the staff to arrange the second sealing tube.

[0013] Optionally, the end of the second sealing tube is spaced apart to be provided with a plurality of shearing grooves, and the side wall of the wire is close to the inner wall of the shearing groove.

[0014] By adopting the technical scheme, when the staff dismounts the second sealing tube, the staff shortens the side wall of the second sealing tube along the shearing groove, so that the second sealing tube is more easily dismounted, and the operation difficulty of the staff is simplified.

[0015] Optionally, an end of the clamping sheet away from the second sealing tube is fixed with an extension sheet, and the side wall of the extension sheet is in abutment with the side wall of the wire.

[0016] By adopting the technical scheme, when the staff takes out the second sealing tube in the clamped state, the staff pulls the extension sheet, and the extension sheet drives the clamping sheet to rotate towards the second sealing tube, so that the second sealing tube is convenient for the staff to take out, and the operation process of the staff is simplified.

[0017] Optionally, the side wall of the first sealing tube is fixed with a trapezoidal block in a spaced apart manner, and the wire is close to the side wall of the trapezoidal block.

[0018] By adopting the technical scheme, when the staff dismounts the first sealing tube, the staff holds the first sealing tube through the trapezoidal block, which provides a force point for the staff to dismount the first sealing tube, and facilitates the staff to operate.

[0019] In summary, the present application has at least one of the following beneficial technical effects:

[0020] 1. The staff installs the first sealing tube on the sidewall of the pin, at this time, the sidewall of the pin and the wire is fixed with the inner wall of the first sealing tube, then the staff installs the second sealing tube on the sidewall of the thermistor, at this time, the sidewall of the thermistor and the first sealing tube is fixed with the inner wall of the second sealing tube, which reduces the possibility of water entering the thermistor when the thermistor is used for a long time, thereby prolonging the service life of the thermistor.

[0021] 2. When the staff removes the second sealing tube, the staff removes the second sealing tube through the cutting groove, and the cutting groove simplifies the operation of the staff to remove the second sealing tube. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is the overall structure schematic diagram of a double-layer sealed thermistor in the embodiment of the application.

[0023] Figure 2 is the overall structure schematic diagram of the first sealing tube in the embodiment of the application.

[0024] Reference signs: 1, thermistor; 2, pin; 3, wire; 4, first sealing tube; 5, second sealing tube; 6, clamping piece; 7, clamping block; 8, clamping groove; 9, cutting groove; 10, extension piece; 11, trapezoidal block. DETAILED DESCRIPTION

[0025] The following will be described in detail in combination with the accompanying Figures 1-2 The application will be further described in detail.

[0026] The embodiment of the application discloses a double-layer sealed thermistor.

[0027] Referring to Figure 1 A double-layer sealed thermistor comprises a thermistor 1 and a second sealing tube 5, the sidewall of the thermistor 1 is fixed with the inner wall of the second sealing tube 5, and the sidewall of the second sealing tube 5 is provided with a plurality of cutting grooves 9, the cutting grooves 9 are arranged in a rectangular shape, when the staff removes the second sealing tube 5, the staff cuts the sidewall of the second sealing tube 5 along the cutting grooves 9, at this time, the second sealing tube 5 is convenient for the staff to disassemble, and the disassembly process of the staff is simplified.

[0028] Referring to Figure 1The side wall of the second sealing tube 5 is fixed with a clamping sheet 6, one end of the clamping sheet 6 is away from the second sealing tube 5, the side wall of the clamping sheet 6 is provided with a clamping groove 8, the side wall of the second sealing tube 5 is fixed with a clamping block 7, and the end of the clamping sheet 6 away from the second sealing tube 5 is fixed with an extension sheet 10. The clamping groove 8 cooperates with the clamping block 7 to fix the clamping sheet 6 to the side wall of the second sealing tube 5. When the worker needs to take out the second sealing tube 5 in the clamping state, the worker pulls the extension sheet 10 to make the clamping sheet 6 close to the side wall of the second sealing tube 5. At this time, the second sealing tube 5 is convenient to take out, and the setting is convenient for the worker to disassemble the second sealing tube 5.

[0029] With reference to Figure 1 and Figure 2 The side wall of the thermistor 1 is fixed with a pin 2, the side wall of the pin 2 is fixed with a first sealing tube 4, the inner wall of the first sealing tube 4 is fixed with a wire 3, and the end of the pin 2 away from the thermistor 1 abuts against the end of the wire 3. Under the sealing action of the first sealing tube 4, the pin 2 and the wire 3 work stably, and the stability of the thermistor 1 during work is increased.

[0030] With reference to Figure 2 The side wall of the first sealing tube 4 is fixed with a trapezoidal block 11. In the embodiment, the trapezoidal blocks 11 are respectively fixed on the two sides of the first sealing tube 4. When the worker dismounts the first sealing tube 4, the worker holds the side wall of the trapezoidal block 11, and then the worker takes down the first sealing tube 4 through the trapezoidal block 11. The setting is convenient for the worker to hold the first sealing tube 4, and simplifies the operation of the worker.

[0031] The implementation principle of the double-layer sealed thermistor in the embodiment is that the worker connects the pin 2 and the wire 3, seals the pin 2 and the wire 3 by using the first sealing tube 4, then seals the thermistor 1 and the first sealing tube 4 by using the second sealing tube 5. At this time, the thermistor 1 and the first sealing tube 4 are sealed. The setting reduces the possibility of water entering the thermistor 1 when the thermistor 1 is used for a long time, thereby prolonging the service life of the thermistor 1.

[0032] The above are preferred embodiments of the application, which do not limit the protection scope of the application. Therefore, any equivalent changes made on the basis of the structure, shape and principle of the application should be covered by the protection scope of the application.

Claims

1. A double-layer sealed thermistor, characterized in that: The invention comprises a thermistor (1), a pin (2), a wire (3) and a first sealed tube (4), wherein the pin (2) is fixed to the side wall of the thermistor (1), the end of the wire (3) is in contact with the end of the pin (2), the side wall of the pin (2) and the side wall of the wire (3) are both fixed to the inner wall of the first sealed tube (4), the side wall of the wire (3) is fixed to a second sealed tube (5), the side wall of the thermistor (1) is fixed to the inner wall of the second sealed tube (5), and the side wall of the first sealed tube (4) is fixed to the inner wall of the second sealed tube (5).

2. A double-layer sealed thermistor according to claim 1, characterized in that: A clamping piece (6) is fixed to the side wall of the second sealing tube (5), and the end of the clamping piece (6) is away from the second sealing tube (5).

3. The double-layer sealed thermistor according to claim 2, characterized in that: A clamping block (7) is fixed to the side wall of the second sealing tube (5), a clamping groove (8) is provided on the side wall of the clamping piece (6), and the side wall of the clamping block (7) abuts against the inner wall of the clamping groove (8).

4. The double-layer sealed thermistor according to claim 3, characterized in that: A plurality of shearing grooves (9) are provided at intervals at the end of the second sealing tube (5), and the side wall of the wire (3) is close to the inner wall of the shearing groove (9).

5. The double-layer sealed thermistor according to claim 4, characterized in that: An extension piece (10) is fixed to one end of the clamping piece (6) away from the second sealing tube (5), and the side wall of the extension piece (10) abuts against the side wall of the wire (3).

6. The double-layer sealed thermistor according to claim 1, characterized in that: Trapezoidal blocks (11) are fixed at intervals on the side walls of the first sealing tube (4), and the wires (3) are close to the side walls of the trapezoidal blocks (11).

Images