High-sensitivity electric iron sensor

Abstract

The utility model discloses a high sensitivity type electric iron sensor, the inner wall of a shell is provided with at least one group of guide grooves, the top of a socket is provided with a groove for accommodating a circuit board, the outer side of the groove is fixedly communicated with a positioning groove, the top of the socket is fixedly connected with a first limiting ring through a bolt, and the circuit board is sleeved with the first limiting ring. And the outer side of the circuit board is fixedly connected with a ball head rod penetrating through the positioning groove. In the utility model, when the thermistor is damaged, the shell is pressed downwards to the bottom end of the base, so that the ball head end of the ball head rod is separated from the elastic opening clamp to reach the top of the short groove of the guide groove, then the shell is rotated anticlockwise until the ball head end of the ball head rod reaches the top of the long groove of the guide groove, then the shell is taken out by lifting upwards, and then the first limiting ring is detached; therefore, the circuit board and the thermistor can be pulled out of the socket, thereby facilitating the maintenance or replacement of the thermistor, and reducing the maintenance cost and resource waste.

Description

Technical Field

[0001] This utility model relates to the field of sensor technology, and in particular to a highly sensitive electric iron sensor. Background Technology

[0002] An electric iron is a tool that uses heat to remove wrinkles from clothes and fabrics. Its power is usually between 300 and 1000 watts. To ensure safety and effectiveness, electric irons are equipped with a temperature sensor inside.

[0003] Most current temperature sensors are manufactured by soldering an NTC thermistor to metal leads, placing it inside a protective housing, and then sealing it with epoxy resin; or by first encapsulating the NTC thermistor with epoxy resin and then placing it in a protective housing. However, the problem with this manufacturing method is that once the NTC thermistor fails, the entire temperature sensor often has to be discarded because it is difficult to repair, which not only increases the user's maintenance costs but also wastes resources. Utility Model Content

[0004] The purpose of this utility model is to provide a highly sensitive electric iron sensor in order to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A highly sensitive electric iron sensor includes a temperature sensor. The temperature sensor comprises, from top to bottom, a housing, a circuit board, a socket, and a stepped base. The inner wall of the housing has at least one set of guide grooves. The top of the socket has a groove for accommodating the circuit board, and a positioning groove is fixedly connected to the outside of the groove. A first limiting ring, sleeved on the outside of the circuit board, is fixedly connected to the top of the socket by bolts. A ball joint rod passing through the positioning groove is fixedly connected to the outside of the circuit board, and the ball end of the ball joint rod slides in engagement with the guide groove. The base is fixedly sleeved on the bottom side of the socket. The base includes a base, and the socket is fixedly connected to the top of the base. A compression spring, sleeved on the outside of the socket, is fixedly connected to the stepped surface of the base. A stepped slip ring, sleeved on the outside of the socket, is fixedly connected to the free end of the compression spring. The bottom of the housing is in smooth contact with the stepped surface of the slip ring.

[0007] As a further description of the above technical solution:

[0008] The temperature sensor also includes leads, a plug, and a thermistor. A metal wiring layer is provided on the circuit board. The plug and the thermistor are fixed on both sides of the circuit board and electrically connected through the metal wiring layer. The socket has a socket for electrical connection with the plug, and the leads are electrically connected to the socket.

[0009] As a further description of the above technical solution:

[0010] The guide grooves are provided in three sets on the outer shell, and the three sets of guide grooves are arranged in a ring array around the central axis of the outer shell.

[0011] As a further description of the above technical solution:

[0012] The short end of the guide groove is fixedly connected to an elastic opening clamp, and the ball end of the ball head rod is engaged with the elastic opening clamp.

[0013] As a further description of the above technical solution:

[0014] Several guide blocks are fixedly connected to the bottom side of the slip ring, and a guide groove is provided on the base to slide with the guide blocks.

[0015] As a further description of the above technical solution:

[0016] The socket is fixedly connected to a boss on the outside. The outer wall of the boss and the inner wall of the outer shell are respectively provided with multiple sets of first annular grooves and second annular grooves. A sealing ring that mates with the second annular groove is sleeved on the first annular groove.

[0017] As a further description of the above technical solution:

[0018] The base is fixedly connected to the top by several bolts with a second limiting ring sleeved on the outside of the boss, and the bottom of the second limiting ring is in contact with the top of the sliding ring.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0020] 1. In this utility model, when the thermistor is damaged, press the outer shell down to the bottom of the base so that the ball end of the ball head rod disengages from the elastic opening clamp and comes to the top of the short groove of the guide groove. Then rotate the outer shell counterclockwise until the ball end of the ball head rod reaches the top of the long groove of the guide groove. Then pull it up to remove the outer shell. After that, remove the first limiting ring so that the circuit board and the thermistor can be pulled out from the socket, which facilitates the repair or replacement of the thermistor and reduces repair costs and resource waste.

[0021] 2. In this utility model, the design of multiple sets of annular grooves and sealing rings forms multiple sealing barriers, which greatly improves the sensor's waterproof and dustproof capabilities. Attached Figure Description

[0022] Figure 1 An exploded view of a high-sensitivity electric iron sensor according to an embodiment of the present invention is shown.

[0023] Figure 2A cross-sectional schematic diagram of a highly sensitive electric iron sensor according to an embodiment of the present invention is shown;

[0024] Figure 3 It shows Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 A schematic diagram of the connection structure between the inverted J-shaped groove on the outer shell and the ball joint provided according to an embodiment of the present invention is shown;

[0026] Figure 5 A three-dimensional structural schematic diagram of a highly sensitive electric iron sensor according to an embodiment of the present invention is shown.

[0027] Legend:

[0028] 1. Base; 101. Guide groove; 2. Boss; 201. First annular groove; 3. Socket; 301. Groove; 302. Socket hole; 303. Positioning groove; 4. Lead wire; 5. Compression spring; 6. Slip ring; 7. Guide block; 8. Second limiting ring; 9. First limiting ring; 10. Sealing ring; 11. Circuit board; 12. Plug; 13. Ball head rod; 14. Thermistor; 15. Housing; 1501. Guide groove; 1502. Second annular groove; 16. Elastic opening clamp. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-5This utility model provides a technical solution: a highly sensitive electric iron sensor, including a temperature sensor. The temperature sensor includes, from top to bottom, a housing 15, a thermistor 14, a circuit board 11, a plug 12, a socket 3, a stepped base 1, and a lead wire 4. The thermistor 14 is the core component of the temperature sensor; its resistance changes with temperature, enabling it to sense temperature changes on the surface of the electric iron. A metal wiring layer is provided on the circuit board 11. The plug 12 and the thermistor 14 are respectively fixed to both sides of the circuit board 11 and electrically connected through the metal wiring layer, ensuring unobstructed signal transmission from the thermistor 14 to the circuit board. The socket 3 has a socket 302 for electrical connection with the plug 12, enabling circuit connection while facilitating the assembly, possible repair, or replacement of the thermistor 14. The lead wire 4 is electrically connected to the socket 3 and is responsible for transmitting the electrical signal sensed by the temperature sensor to the control circuit of the electric iron, thereby adjusting the working state of the heating element according to temperature changes to maintain the set ironing temperature. This device utilizes the temperature-sensitive characteristic of the thermistor 14 and, through a series of precisely designed electrical connections, achieves accurate monitoring and adjustment of the working temperature of the electric iron. When the thermistor detects a temperature change, it transmits the information to the control system of the electric iron through the circuit board 11 and lead wire 4. The system then makes corresponding adjustments to ensure temperature stability and safety during the ironing process.

[0031] Specifically, such as Figure 1-4As shown, the inner wall of the outer casing 15 has three sets of guide grooves 1501 arranged in a circular array around the central axis of the outer casing 15. The long end of the guide groove 1501 connects to the bottom of the outer casing 15. The top of the socket 3 has a groove 301 for accommodating the circuit board 11. A positioning groove 303 is fixedly connected to the outside of the groove 301. The top of the socket 3 is fixedly connected by bolts to a first limiting ring 9 sleeved on the outside of the circuit board 11 to limit the circuit board 1, improve the connection between the plug 12 and the socket 3, and avoid poor electrical connection during the use of the temperature sensor. A ball head rod 13 passing through the positioning groove 303 is fixedly connected to the outside of the circuit board 11. The ball head rod 13 cooperates with the positioning groove 303 to guide and position the installation of the circuit board 11. The short end of the guide groove 1501 is fixedly connected to an elastic open clamp 16. The ball end of the ball head rod 13 can slide in the guide groove 1501 until it engages with the elastic open clamp 16. The engagement between the ball head rod 13 and the elastic open clamp 16 serves to fix the outer shell 15. The base 1 is fixedly sleeved on the bottom side of the socket 3. The socket 3 is fixedly connected to the top of the base 1. A compression spring 5 is fixedly connected to the stepped surface of the base 1 and sleeved outside the socket 3. The free end of the compression spring 5 is fixedly connected to a stepped slip ring 6 sleeved outside the socket 3. Under the action of the compression spring 5 and the clamping action of the elastic open clamp 16, the connection between the outer shell 15 and the ball head rod 13 is more stable and firm. The bottom of the outer shell 15 is in smooth contact with the stepped surface of the slip ring 6, which facilitates the rotation of the outer shell 15. When the thermistor 14 is damaged, press down on the outer casing 15 to compress the slip ring 6 and the compression spring 5 to descend to the bottom of the base 1. During this process, the ball end of the ball head rod 13 disengages from the elastic opening clamp 16 and comes to the top of the short groove of the guide groove 1501. Then, rotate the outer casing 15 counterclockwise until the ball end of the ball head rod 13 reaches the top of the long groove of the guide groove 1501. Remove the outer casing 15 upwards (or use the elasticity of the compression spring 5 to make the outer casing 15 spring upwards) until the ball head rod 13 disengages from the guide groove 1501. After the outer casing 15 is removed, remove the first limiting ring 9. Then, the circuit board 11 and the thermistor 14 can be pulled out from the socket 3, which facilitates the repair or replacement of the thermistor 14 and reduces repair costs and resource waste.

[0032] Specifically, such as Figure 1 and Figure 3 As shown, a number of guide blocks 7 are fixedly connected to the bottom side of the slip ring 6, and a guide groove 101 is provided on the base 1 to slide and cooperate with the guide blocks 7, so as to ensure that the slip ring 6 can move smoothly along the predetermined direction and path, while maintaining good positioning accuracy and stability.

[0033] Specifically, such as Figure 1 and Figure 3 As shown, the base 1 is fixedly connected to the top by several bolts to a second limiting ring 8 sleeved on the outside of the boss 2. The bottom of the second limiting ring 8 contacts the top of the slip ring 6 to prevent the slip ring 6 from moving excessively.

[0034] Specifically, such as Figure 1-4 As shown, a boss 2 is fixedly connected to the outside of the socket 3. Multiple sets of first annular grooves 201 and second annular grooves 1502 are respectively opened on the outer wall of the boss 2 and the inner wall of the outer shell 15. A sealing ring 10 that mates with the second annular groove 1502 is sleeved on the first annular groove 201. Through the design of multiple annular grooves and sealing rings 10, multiple sealing barriers are formed, which greatly improves the waterproof and dustproof capabilities of the sensor.

[0035] Working principle: When the thermistor 14 is damaged, press down on the outer shell 15 to squeeze the slip ring 6 and compression spring 5 to descend to the bottom of the base 1. During this process, the ball end of the ball rod 13 disengages from the elastic opening clamp 16 and comes to the top of the short groove of the guide groove 1501. Then, rotate the outer shell 15 counterclockwise until the ball end of the ball rod 13 reaches the top of the long groove of the guide groove 1501. Remove the outer shell 15 upwards (or use the elasticity of the compression spring 5 to make the outer shell 15 spring upwards) until the ball rod 13 disengages from the guide groove 1501. After the outer shell 15 is removed, remove the first limiting ring 9. Then, the circuit board 11 and the thermistor 14 can be pulled out from the socket 3, which facilitates the repair or replacement of the thermistor 14 and reduces repair costs and resource waste.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high sensitivity electric iron sensor comprising a temperature sensor, characterized in that, The temperature sensor includes, from top to bottom, a housing (15), a circuit board (11), a socket (3), and a stepped base (1). The inner wall of the housing (15) has at least one set of guide grooves (1501). The top of the socket (3) has a groove (301) for accommodating the circuit board (11). A positioning groove (303) is fixedly connected to the outside of the groove (301). A first limiting ring (9) fitted around the circuit board (11) is bolted to the top of the socket (3). A ring passing through the positioning groove (9) is fixedly connected to the outside of the circuit board (11). The ball head rod (13) of 303 has a ball head end that slides into the guide groove (1501). The base (1) is fixedly sleeved on the bottom side of the socket (3). The base (1) includes a base (1). The socket (3) is fixedly connected to the top of the base (1). A compression spring (5) sleeved outside the socket (3) is fixedly connected to the stepped surface of the base (1). A stepped slip ring (6) sleeved outside the socket (3) is fixedly connected to the free end of the compression spring (5). The bottom of the outer shell (15) is in smooth contact with the stepped surface of the slip ring (6).

2. A high sensitivity electric iron sensor according to claim 1, wherein, The temperature sensor also includes a lead wire (4), a plug (12) and a thermistor (14). A metal wiring layer is provided on the circuit board (11). The plug (12) and the thermistor (14) are fixed on both sides of the circuit board (11) and electrically connected through the metal wiring layer. The socket (3) has a socket (302) that is electrically connected to the plug (12). The lead wire (4) is electrically connected to the socket (3).

3. A high sensitivity electric iron sensor according to claim 2, wherein, The short end of the guide groove (1501) is fixedly connected to an elastic opening clamp (16), and the ball end of the ball head rod (13) is engaged with the elastic opening clamp (16).

4. A high sensitivity electric iron sensor according to claim 3, wherein The guide groove (1501) is provided in three sets on the outer shell (15), and the three sets of guide grooves (1501) are arranged in a ring array around the central axis of the outer shell (15).

5. A high sensitivity electric iron sensor according to claim 4, wherein The slip ring (6) has several guide blocks (7) fixedly connected to its bottom side, and the base (1) has a guide groove (101) that slides with the guide blocks (7).

6. A high sensitivity electric iron sensor according to claim 5, wherein, The socket (3) is fixedly connected to a boss (2). The outer wall of the boss (2) and the inner wall of the outer shell (15) are respectively provided with a number of first annular grooves (201) and second annular grooves (1502). The first annular groove (201) is fitted with a sealing ring (10) that cooperates with the second annular groove (1502).

7. A high sensitivity electric iron sensor according to claim 6, wherein The base (1) is fixedly connected to the top by several bolts to a second limiting ring (8) sleeved outside the boss (2), and the bottom of the second limiting ring (8) contacts the top of the slip ring (6).

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