High-sensitivity temperature sensor

Abstract

The utility model relates to the technical field of temperature sensors, and discloses a high-sensitivity temperature sensor, which comprises a thermosensitive shell, a lead column is adhered to the bottom of the thermosensitive shell, two sides of the lead column are provided with limiting holes, damping springs are fixedly connected to the inner walls of the limiting holes, and the damping springs are connected with the lead column. And one end of the damping spring is fixedly connected with a locking column. According to the high-sensitivity temperature sensor, through comprehensive arrangement of the locking columns, the mounting conical cylinder, the bayonet socket and the connecting pieces, when the thermistor is aged, the locking columns on the two sides of the wire column are pressed in the limiting holes in the mounting conical cylinder, so that the wire column can be separated from the interior of the mounting conical cylinder, and meanwhile, the connecting pieces inserted into the bayonet socket are separated synchronously; therefore, the thermistor can be conveniently disconnected on the inner socket, the aged thermistor can be directly replaced, on one hand, the high sensitivity of the temperature sensor is maintained, and on the other hand, the maintenance cost of the temperature sensor is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature sensors, in particular to a high-sensitivity temperature sensor. Background Art

[0002] A temperature sensor is a sensor that can sense temperature changes quickly and accurately. They usually have high sensitivity and response speed, and can capture small changes in temperature in a short time. These sensors are often used in applications that require high-precision temperature monitoring, such as scientific experiments, industrial production process control, medical diagnosis and other fields. High thermal sensitivity temperature sensors include thermistor sensors.

[0003] The high-sensitivity temperature sensor disclosed in publication number CN207335889U has a simple structure and is easy to use. It can also protect the thermistor and has a fast response speed and high sensitivity.

[0004] However, this highly sensitive temperature sensor has the following disadvantages:

[0005] (1) The thermistor of the temperature sensor will age after a long period of use, and it is not convenient to replace the thermistor to maintain the sensitivity of the temperature sensor;

[0006] (2) It is not convenient to use ceramic materials to encapsulate thermistors to improve the high temperature resistance, mechanical strength, chemical stability and insulation performance of thermistors. Utility Model Content

[0007] 1. Technical issues to be resolved

[0008] The technical problem solved by the utility model is to provide a high-sensitivity temperature sensor which is highly practical, can be simply operated and has a relatively simple structure, thereby solving the problems raised in the above-mentioned background technology that it is inconvenient to replace the aged thermistor and it is inconvenient to improve the high temperature resistance, mechanical strength, chemical stability and insulation performance of the thermistor.

[0009] (II) Technical solution

[0010] To achieve the above objectives, the utility model is implemented through the following technical solutions: a high-sensitivity temperature sensor, comprising a thermistor shell, a wire post is bonded to the bottom of the thermistor shell, limit holes are provided on both sides of the wire post, a damping spring is fixedly connected to the inner wall of the limit hole, a locking post is fixedly connected to one end of the damping spring, a mounting cone is plugged into the surface of the wire post, locking holes are provided on both sides of the mounting cone, an inner socket is fixedly installed in the middle of the bottom surface of the mounting cone, two plug-in slots are provided on the surface of the inner socket, a plug-in socket is fixedly installed inside the two plug-in slots, a connector is plugged into the inside of the plug-in socket, and a thermistor is connected to the surface of the connector through copper wire.

[0011] As a further solution of the utility model, the material of the thermistor housing is ceramic, and a thermistor is fixedly installed inside the thermistor housing. The thermistor packaged with ceramic material has a better heat conduction effect.

[0012] As a further solution of the utility model, the surface of the locking column is slidably connected to the inside of the limiting hole and the locking hole, and the inside of the limiting hole and the locking hole penetrate each other. The limiting hole and the locking hole have the same size, which ensures that the locking column is inserted into the locking hole, so that the wire column is fixed inside the mounting cone.

[0013] As a further solution of the utility model, conductive metal is soldered on the bottom of the socket, the conductive metal is made of copper, one end of the conductive metal is connected to an external wire, and the copper conductive metal improves the current conduction performance of the thermistor.

[0014] As a further solution of the utility model, the surface of the copper wire is connected to the inside of the wire post, the surface of the connector is fixedly mounted on the bottom surface of the wire post, and the copper wire passes through the epoxy resin wire post, achieving insulation and heat resistance effects.

[0015] As a further solution of the utility model, a gasket is fixedly connected to the bottom of the inner socket, and a waterproof socket is fixedly connected to the bottom of the gasket. The waterproof socket ensures that the thermistor is energized, so that the thermistor produces a temperature conduction effect.

[0016] As a further solution of the utility model, the material of the wire post is epoxy resin, and the wire post is cylindrical and inserted into the interior of the mounting cone. The wire post inserted into the interior of the mounting cone facilitates replacement and disassembly of the thermistor.

[0017] As a further solution of the utility model, the materials of the installation cone and the inner socket are both plastic, and the installation cone and the inner socket are integrally pressed and molded. The integral pressing of the installation cone and the inner socket facilitates the production of the temperature sensor.

[0018] (III) Beneficial effects

[0019] The utility model provides a high-sensitivity temperature sensor, which has the following beneficial effects:

[0020] 1. The high-sensitivity temperature sensor is integrated with a locking column, a mounting cone, a socket and a connector. When the thermistor ages, the locking columns on both sides of the wire column are pressed in the limiting hole on the mounting cone, so that the wire column can be separated from the inside of the mounting cone, and the connector plugged on the socket is separated synchronously, so as to facilitate the disconnection of the thermistor on the inner socket and directly replace the aged thermistor. On the one hand, the high sensitivity of the temperature sensor is maintained, and on the other hand, the maintenance cost of the temperature sensor is reduced.

[0021] 2. This highly sensitive temperature sensor, through the setting of thermistor shell, the thermistor is wrapped by the ceramic thermistor shell, and the copper wire connected to it is encapsulated and fixed by the epoxy resin wire post. Under the premise of ensuring that it has reliable sealing performance, good insulation performance and electrical performance, the thermistor shell made of ceramic material can improve the high temperature resistance, mechanical protection strength and thermistor's resistance to chemical damage compared to the thermistor shell wrapped by traditional materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the conductor post and the inner socket of the utility model;

[0024] Figure 3 This is a schematic diagram of the internal split structure of the conductor post and the installation cone of the utility model;

[0025] Figure 4 This is a schematic diagram of the thermistor circuit connection structure of the utility model.

[0026] In the figure: 1. Thermistor housing; 2. Wire post; 3. Limiting hole; 4. Damping spring; 5. Locking post; 6. Mounting cone; 7. Internal socket; 8. Plug slot; 9. Plug socket; 10. Connector; 11. Copper wire; 12. Thermistor; 13. Conductive metal; 14. External wiring; 15. Washer; 16. Waterproof socket; 17. Locking hole. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figures 1 to 4 The utility model provides a technical solution: a high-sensitivity temperature sensor, including a thermistor shell 1. Through the setting of the thermistor shell 1, the high temperature resistance, mechanical protection strength and the resistance of thermistor 12 to chemical substances are improved. A wire column 2 is bonded to the bottom of the thermistor shell 1, and limiting holes 3 are provided on both sides of the wire column 2. A damping spring 4 is fixedly connected to the inner wall of the limiting hole 3, and a locking column 5 is fixedly connected to one end of the damping spring 4. A mounting cone 6 is plugged into the surface of the wire column 2, and locking holes 17 are provided on both sides of the mounting cone 6. An inner socket 7 is fixedly installed in the middle of the bottom surface of the mounting cone 6. Two plug-in grooves 8 are provided on the surface of the inner socket 7, and a plug-in seat 9 is fixedly installed inside the two plug-in grooves 8. A connector 10 is plugged into the inside of the plug-in seat 9. Through the comprehensive setting of the locking column 5, the mounting cone 6, the plug-in seat 9 and the connector 10, the surface of the connector 10 is connected to the thermistor 12 through a copper wire 11.

[0029] The material of the thermistor housing 1 is ceramic, and a thermistor 12 is fixedly installed inside the thermistor housing 1. The arrangement of the thermistor housing 1 encapsulated and wrapped by the ceramic material plays a role in ensuring the stable operation of the thermistor 12.

[0030] The surface of the locking column 5 is slidably connected to the inside of the limiting hole 3 and the locking hole 17, and the inside of the limiting hole 3 and the locking hole 17 penetrate each other. Through the setting of the limiting hole 3 and the locking hole 17, the locking column 5 is inserted into the inside of the limiting hole 3 and the locking hole 17, so that the wire column 2 is fixed on the inside of the mounting cone 6.

[0031] A conductive metal 13 is soldered on the bottom of the socket 9. The conductive metal 13 is made of copper. One end of the conductive metal 13 is connected to an external wire 14. The socket 9 is configured to encapsulate the conductive metal 13 and facilitate disconnection of the thermistor 12, thereby facilitating replacement of the thermistor 12.

[0032] The surface of the copper wire 11 penetrates and connects to the inside of the conductor post 2 , and the surface of the connector 10 is fixedly mounted on the bottom surface of the conductor post 2 . The thermistor 12 connected to the copper wire 11 improves the current conduction performance and maintains the sensitivity of the thermistor 12 .

[0033] A gasket 15 is fixedly connected to the bottom of the inner socket 7, and a waterproof socket 16 is fixedly connected to the bottom of the gasket 15. The sealed waterproof socket 16 can prevent water from entering the installation cone 6 and avoid short circuits in the temperature sensor.

[0034] The conductor post 2 is made of epoxy resin. The conductor post 2 is cylindrical and inserted into the interior of the mounting cone 6. The conductor post 2 made of epoxy resin ensures the heat resistance and insulation performance of the copper wire 11 running through the interior.

[0035] The materials of the mounting cone 6 and the inner socket 7 are both plastic, and the mounting cone 6 and the inner socket 7 are integrally pressed and formed. The mounting cone 6 and the inner socket 7 made of plastic reduce the production cost of the temperature sensor.

[0036] The model of thermistor 12 is MF52, and the above parameters and models can be selected according to actual conditions.

[0037] In the utility model, the working steps of the device are as follows:

[0038] Step 1: When the thermistor 12 is aged, the locking posts 5 on both sides of the wire post 2 are pressed in the limiting hole 3 on the installation cone 6, and the locking posts 5 on both sides slide inside the limiting hole 3 and the locking hole 17, and after being separated from the locking hole 17, the wire post 2 can be separated from the inside of the installation cone 6, and the connector 10 plugged into the socket 9 is separated synchronously, so as to facilitate the disconnection of the thermistor 12 on the inner socket 7, and the aged thermistor 12 can be directly replaced;

[0039] The second step: when installing the new thermistor 12, the locking columns 5 on both sides of the new wire column 2 are pressed. Under the action of the damping spring 4 inside the limiting hole 3, the locking columns 5 on both sides shrink into the limiting hole 3, so that when the wire column 2 is inserted into the installation cone 6, it does not affect the sliding. Until the limiting hole 3 and the locking hole 17 penetrate each other, the locking column 5 loses the squeezing force of the inner wall of the installation cone 6. Under the reverse force of the damping spring 4, the locking columns 5 on both sides of the wire column 2 slide into the locking hole 17. At the same time, the connector 10 at the bottom of the wire column 2 is just inserted into the socket 9 on the top surface of the inner socket 7, so as to conduct the connection of the thermistor 12;

[0040] The third step: the thermistor 12 is wrapped with a ceramic thermal housing 1, and the copper wire 11 connected to it is encapsulated and fixed with an epoxy resin lead post 2. Under the premise of ensuring reliable sealing performance, good insulation performance and electrical performance, the thermistor 12 wrapped with ceramic can work at a higher temperature without being damaged; ceramic materials usually have good mechanical strength and hardness, so they can provide better protection and reduce the possibility of mechanical damage; ceramic materials usually have good chemical stability and can resist the erosion of some chemical substances, thereby improving the stability and durability of the thermistor 12; ceramic materials usually have good insulation properties, which can effectively isolate the circuit and reduce external interference, thereby improving the stability and reliability of the circuit.

[0041] It should be noted that the equipment structure and drawings of the present utility model mainly describe the principle of the present utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above-mentioned utility model, they can clearly know the details of its power mechanism, power supply system and control system. The control method of the application document is to automatically control through a controller, and the control circuit of the controller can be realized by simple programming by technical personnel in this field; although the embodiments of the present utility model have been shown and described, for ordinary technical personnel in this field, it can be understood that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the attached claims and their equivalents.

Claims

1. A highly sensitive temperature sensor, comprising a heat-sensitive housing (1), characterized in that: A conductor post (2) is bonded to the bottom of the thermistor housing (1), and limit holes (3) are provided on both sides of the conductor post (2). A damping spring (4) is fixedly connected to the inner wall of the limit hole (3), and a locking post (5) is fixedly connected to one end of the damping spring (4). A mounting cone (6) is plugged into the surface of the conductor post (2), and locking holes (17) are provided on both sides of the mounting cone (6). An inner socket (7) is fixedly installed in the middle of the bottom surface of the mounting cone (6), and two plug-in slots (8) are provided on the surface of the inner socket (7). A plug-in seat (9) is fixedly installed inside the two plug-in slots (8), and a connector (10) is plugged into the inside of the connector (9). The surface of the connector (10) is connected to a thermistor (12) through a copper wire (11).

2. A high-sensitivity temperature sensor according to claim 1, characterized in that: The material of the thermistor housing (1) is ceramic, and a thermistor (12) is fixedly installed inside the thermistor housing (1).

3. A high-sensitivity temperature sensor according to claim 1, characterized in that: The surface of the locking column (5) is slidably connected to the interior of the limiting hole (3) and the locking hole (17), and the interior of the limiting hole (3) and the interior of the locking hole (17) penetrate each other.

4. A high-sensitivity temperature sensor according to claim 1, characterized in that: A conductive metal (13) is soldered to the bottom of the socket (9), the conductive metal (13) is made of copper, and one end of the conductive metal (13) is connected to an external wire (14).

5. A high-sensitivity temperature sensor according to claim 1, characterized in that: The surface of the copper wire (11) penetrates and is connected to the inside of the conductor post (2), and the surface of the connecting piece (10) is fixedly mounted on the bottom surface of the conductor post (2).

6. A high-sensitivity temperature sensor according to claim 1, characterized in that: A gasket (15) is fixedly connected to the bottom of the inner socket (7), and a waterproof socket (16) is fixedly connected to the bottom of the gasket (15).

7. A high-sensitivity temperature sensor according to claim 1, characterized in that: The material of the conductor post (2) is epoxy resin, and the conductor post (2) is cylindrical and inserted into the interior of the mounting cone (6).

8. A high-sensitivity temperature sensor according to claim 1, characterized in that: The materials of the installation cone (6) and the inner socket (7) are both plastic, and the installation cone (6) and the inner socket (7) are integrally pressed and formed.

Images