Multi-site heat-sealing temperature sensor

Abstract

The utility model discloses a multi-site heat-sealing temperature sensor, which belongs to the technical field of sensors, comprises a connector which comprises a body and a terminal fixed in the body and connected with a cable, and is characterized in that the connector is electrically connected with a preset number of temperature sensing heads through the cable; a preset number of doubling cables are connected with the cable through a doubling structure, the cable is connected with one terminal of the connector, an insulating sleeve is sleeved on the outer side of the temperature sensing head conductive wire, and a double-layer heat shrink tube is sleeved on the outer side of each temperature sensing head and the insulating sleeve corresponding to the temperature sensing head. The beneficial effects of the multi-site heat-sealing temperature sensor are that the multi-site heat-sealing temperature sensor with the doubling structure can connect the doubling cable with the cable through the doubling structure, thereby saving a large number of signal single-side terminals of a connector; and the insulating sleeve avoids the use of an insulating sheet, so that the head of the NTC thermistor which is a temperature sensing element of a glass product is possibly cracked.

Description

Technical field:

[0001] The utility model belongs to the technical field of sensors, and more specifically relates to a multi-point heat-sealed temperature sensor. Background technology:

[0002] Temperature sensor is one of the important sensors widely used in various fields to measure the temperature of various objects. With the development of science and technology and the increase in market demand, heat-sealed temperature sensors are gaining more and more attention.

[0003] With the development of electric vehicle technology, electric vehicles have gradually entered the market and have been recognized by the general public. Electric vehicle charging gun equipment is also a core component. The safety and service life of the charging gun will become an important direction for the research and development of electric vehicles. As an important component of electric vehicle power input, the charging gun will generate a lot of heat during charging. The temperature is high. In a relatively humid natural environment, it is easy to affect the insulation of the temperature sensor. The existing temperature sensor has complex technology, short service life, and fast aging of components.

[0004] The national utility model patent with patent number 201921995419.X discloses a plastic-sealed high-temperature resistant temperature sensor, which solves the above problems very well. The heat shrink tube is set on the outside of the NTC thermistor and the exposed part of the positive and negative circuits, and melted and shrunk by a hot air blower to form an external insulation protection layer of the temperature sensor; the two pins of the NTC thermistor are respectively welded to the two wires to form an insulating sheet between the positive and negative lines, avoiding the problem of short circuit between the positive and negative lines caused by the exposed setting of the pins of the NTC thermistor and the welded parts of the wires, thereby ensuring the overall service life of the temperature sensor. However, this structure has the following defects:

[0005] 1. NTC thermistors are made of glass. Using insulating sheets is risky and may crack the head of the temperature sensing element.

[0006] 2. When the multi-point heat-sealed temperature sensor detects the point temperature, it requires a large number of connector terminals, which increases the probability of damage. Utility model content:

[0007] In order to solve the above problems and overcome the shortcomings of the prior art, the utility model provides a multi-point heat-sealed temperature sensor;

[0008] The first technical problem to be solved is: NTC thermistors are made of glass, and using insulating sheets is risky, as it may crack the head of the temperature sensing element;

[0009] The second technical problem to be solved is that when a multi-point heat-sealed temperature sensor is used to detect the temperature of a point, a large number of connector terminals are required, which increases the probability of damage.

[0010] The specific technical solution of the utility model to solve the above technical problems is: the multi-point heat-sealed temperature sensor comprises a connector, the connector comprises a body and a terminal fixed in the body and connected to the cable, characterized in that the connector is electrically connected to a preset number of temperature sensing heads through the cable,

[0011] The temperature sensing head includes a temperature sensing element, and two pins of the temperature sensing element are electrically connected to the temperature sensing head conductive wires respectively.

[0012] One of the temperature sensing head's conductive wires is connected to the parallel cable by extruding a hot-melt metal part.

[0013] A preset number of parallel cables are connected to the cable line through the parallel structure, and the cable line is connected to a terminal of the connector.

[0014] Another conductive wire of the temperature sensing head is connected to the cable wire by extruding a hot-melt metal piece, and the cable wire is connected to the other terminal of the connector.

[0015] Furthermore, the parallel wiring structure includes a metal connector and an adhesive heat shrink tube.

[0016] Furthermore, a preset number of cells of the parallel cables and cells of the cables are plugged into the metal connector, and the outer side of the metal connector is fixed by heat sealing with a heat shrink tube with adhesive.

[0017] Furthermore, the conductive wires of the temperature sensing head and the electric cores of the parallel cable are connected by extruding hot-melt metal parts.

[0018] Furthermore, the conductive wire of the temperature sensing head and the electric core of the cable are connected by extruding a hot-melt metal piece.

[0019] Furthermore, an insulating sleeve is provided on the outer side of the conductive wire of the temperature sensing head.

[0020] Furthermore, each of the temperature sensing heads and the insulating sleeve corresponding to the temperature sensing head is sheathed with a double-layer heat shrink tube on the outside.

[0021] Furthermore, the double-layer heat shrink tube comprises an inner tube and an outer tube.

[0022] Furthermore, the inner tube is made of silicone tube or fluororubber tube.

[0023] Furthermore, the outer tube is made of Teflon material.

[0024] The beneficial effects of the utility model are:

[0025] One advantage of the utility model is that it provides a multi-point heat-sealed temperature sensor with a parallel line structure, which can connect the parallel line cable to the cable line through the parallel line structure, saving a large number of signal single-side terminals of the connector;

[0026] One advantage of the utility model is that a preset number of parallel cables are provided and connected to the cable line through the parallel structure, which saves the terminal interface and increases the signal transmission stability of the electrical signal and the stability of the structure, improves the waterproof, insulation and pressure resistance performance of the product, and avoids the occurrence of electrical failure problems;

[0027] One advantage of the utility model is that an insulating sleeve is provided on the outer side of the conductive wire of the temperature sensing head, thereby avoiding the use of an insulating sheet, which may crack the head of the temperature sensing element of the NTC thermistor made of glass;

[0028] The material of the inner tube can better protect, seal and conduct heat to the temperature sensing element, thereby improving the accuracy and stability of the temperature sensor. The material of the outer tube has good high temperature resistance and corrosion resistance, and can better protect and seal the temperature sensing element. Description of the drawings:

[0029] Attached Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0030] Attached Figure 2 This is a schematic diagram of the structure of the utility model (heat shrink tube without adhesive);

[0031] Attached Figure 3 It is a partial enlarged internal structure schematic diagram of the utility model A;

[0032] Attached Figure 4 This is a partial enlarged internal structure diagram of the utility model B; in the accompanying drawings:

[0033] 1. Connector; 2. Terminal; 3. Cable; 4. Parallel cable; 5. Parallel structure; 6. Double-layer heat shrink tube; 11. Heat shrink tube with adhesive; 12. Metal connector; 13. Extruded hot-melt metal parts; 14. Temperature sensor conductive wire; 15. Insulating sleeve; 16. Temperature sensing element. Specific implementation method:

[0034] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "rear", "lower left", "upper right", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] Specific implementation of the utility model: The multi-point heat-sealed temperature sensor comprises a connector 1, the connector 1 comprises a body and a terminal 2 fixed in the body and connected to a cable 3, characterized in that the connector 1 is electrically connected to a preset number of temperature sensing heads through the cable 3,

[0036] The temperature sensing head includes a temperature sensing element 16, and two pins of the temperature sensing element 16 are electrically connected to the temperature sensing head conductive wire 14 respectively.

[0037] A temperature sensing head conductive wire 14 of the temperature sensing head is connected to the parallel cable 4 by extruding the hot-melt metal piece 13.

[0038] A preset number of parallel cables 4 are connected to the cable 3 via a parallel structure 5, and the cable 3 is connected to a terminal 2 of the connector 1.

[0039] Another temperature sensing head conductive wire 14 of the temperature sensing head is connected to the cable line 3 by extruding the hot-melt metal piece 13 , and the cable line 3 is connected to the other terminal 2 of the connector 1 .

[0040] Furthermore, the parallel wiring structure 5 includes a metal connector 12 and an adhesive heat shrink tube 11 .

[0041] Furthermore, a preset number of cells of the parallel cables 4 and cells of the cables 3 are plugged into the metal connector 12 , and the outer side of the metal connector 12 is heat-sealed and fixed by a sleeved adhesive heat shrink tube 11 .

[0042] Furthermore, the temperature sensing head conductive wire 14 and the electric core of the parallel cable 4 are connected by extruding a hot-melt metal piece 13 for hot-melt connection.

[0043] Furthermore, the temperature sensing head conductive wire 14 and the electric core of the cable 3 are connected by extruding a hot-melt metal piece 13 for hot-melt connection.

[0044] Furthermore, an insulating sleeve 15 is sleeved on the outer side of the temperature sensing head conductive wire 14 .

[0045] Furthermore, each of the temperature sensing heads and the insulating sleeve 15 corresponding to the temperature sensing head is sleeved with a double-layer heat shrink tube 6 on the outside.

[0046] Furthermore, the double-layer heat shrink tube 6 includes an inner tube and an outer tube.

[0047] Furthermore, the inner tube is made of silicone tube or fluororubber tube.

[0048] Furthermore, the outer tube is made of Teflon.

[0049] It should be noted that the working principle of the utility model is a multi-point heat-sealed temperature sensor.

[0050] 1. A multi-point heat-sealed temperature sensor with a parallel structure 5 can connect the parallel cable 4 to the cable 3 through the parallel structure 5, saving a large number of signal single-side terminals of the connector;

[0051] Among them, the cells of the preset number of parallel cables 4 and the cells of the cable 3 are plugged into the metal connector 12, and the outer side of the metal connector 12 is heat-sealed and fixed by the sleeved adhesive heat shrink tube 11, which saves the terminal interface and increases the signal transmission stability of the electrical signal and the stability of the structure, improves the waterproof, insulation and pressure resistance performance of the product, and avoids the occurrence of electrical failure problems;

[0052] 2. An insulating sleeve 6 is provided outside the conductive wire 15 of the temperature sensing head, which avoids the use of an insulating sheet, which may crack the head of the temperature sensing element of the NTC thermistor made of glass;

[0053] A double-layer heat shrink tube 6 is provided on the outside of the temperature sensing head and the insulating sleeve 15 corresponding to the temperature sensing head. The double-layer heat shrink tube 6 includes an inner tube and an outer tube. The material of the inner tube can be used to better protect, seal, and conduct heat to the temperature sensing element, thereby improving the accuracy and stability of the temperature sensor. The material of the outer tube has good high temperature resistance and corrosion resistance, and can better protect and seal the temperature sensing element.

[0054] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A multi-point heat-sealed temperature sensor, comprising a connector (1), the connector (1) comprising a body and a terminal (2) fixed in the body and connected to a cable (3), characterized in that The connector (1) is electrically connected to a preset number of temperature sensing heads via a cable (3). The temperature sensing head comprises a temperature sensing element (16), two pins of the temperature sensing element (16) are respectively electrically connected to the temperature sensing head conductive wire (14), A temperature sensing head conductive wire (14) of the temperature sensing head is connected to the parallel cable (4) by extruding a hot-melt metal piece (13). A preset number of parallel cables (4) are connected to the cable (3) via a parallel structure (5), and the cable (3) is connected to a terminal (2) of the connector (1). Another temperature sensing head conductive wire (14) of the temperature sensing head is connected to the cable line (3) by extruding the hot-melt metal piece (13), and the cable line (3) is connected to the other terminal (2) of the connector (1).

2. The multi-point heat-sealed temperature sensor according to claim 1, characterized in that The parallel wiring structure (5) comprises a metal connector (12) and an adhesive heat shrink tube (11).

3. The multi-point heat-sealed temperature sensor according to claim 2, characterized in that The cells of a preset number of parallel cables (4) and the cells of the cables (3) are plugged into the metal connector (12), and the outer side of the metal connector (12) is heat-sealed and fixed by a sleeved adhesive heat shrink tube (11).

4. The multi-point heat-sealed temperature sensor according to claim 1, characterized in that The temperature sensing head conductive wire (14) and the electric core of the parallel cable (4) are connected by extruding a hot-melt metal piece (13).

5. The multi-point heat-sealed temperature sensor according to claim 1, characterized in that The temperature sensing head conductive wire (14) and the electric core of the cable (3) are connected by extruding a hot-melt metal piece (13).

6. The multi-point heat-sealed temperature sensor according to any one of claims 1 to 5, characterized in that An insulating sleeve (15) is sleeved on the outer side of the temperature sensing head conductive wire (14).

7. The multi-point heat-sealed temperature sensor according to claim 6, characterized in that Each temperature sensing head and the insulating sleeve (15) corresponding to the temperature sensing head are sleeved with a double-layer heat shrink tube (6) on the outside.

8. The multi-point heat-sealed temperature sensor according to claim 7, characterized in that The double-layer heat shrink tube (6) comprises an inner tube and an outer tube.

9. The multi-point heat-sealed temperature sensor according to claim 8, characterized in that The inner tube is made of silicone tube or fluorine rubber tube.

10. The multi-point heat-sealed temperature sensor according to claim 8 or 9, characterized in that The outer tube is made of Teflon material.

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