Spiral heating resistor

Abstract

The utility model relates to the technical field of heating resistors, and discloses a spiral heating resistor, which comprises a mounting pipe, the outer wall of the mounting pipe is fixedly connected with a fixed sleeve, the middle part of the outer wall of the mounting pipe is provided with a sliding sleeve I, the inner wall of the mounting pipe is slidably connected with a plurality of sliding rods, and the sliding rods are arranged in the sliding sleeve I; the adjacent ends of the sliding rods are fixedly connected with limiting blocks, the ends, away from each other, of the sliding rods are fixedly connected with first moving blocks, the outer walls of the first moving blocks are rotationally connected with rotating blocks, the bottoms of the rotating blocks are rotationally connected with rotating shafts, and the tops of the first sliding sleeves and the tops of the fixing sleeves are fixedly connected with fixing blocks; the inner wall of the top fixing block is fixedly connected with a second plug pin. According to the utility model, the power supply is inserted into the corresponding mounting pipe, and the screw rod I is synchronously inserted into the corresponding positioning groove, so that the purpose of quickly connecting with different power supplies is achieved, the practicability is improved, and the mounting efficiency is accelerated.

Description

Technical Field

[0001] This utility model relates to the field of heating resistor technology, and in particular to a spiral heating resistor. Background Technology

[0002] A heating resistor is an electrical component that converts electrical energy into heat energy. It is widely used in industrial, household appliance, and medical equipment fields. Its structure includes a resistance wire made of a high-resistivity alloy material that generates heat when energized, an insulating material to prevent the resistance wire from coming into contact with the outside environment and causing a short circuit, and a shell to protect the internal components and improve heat dissipation efficiency. In the industrial field, heating resistors are used to heat air, liquids, and solids. In medical equipment, heating resistors are used for thermometers, sterilization, and disinfection of medical devices. Therefore, it is an indispensable electrical component in modern industry and daily life.

[0003] Heating resistors can be categorized into wire-wound heating resistors, plate heating resistors, and tubular heating resistors based on their structure, materials, working principles, and application scenarios. Wire-wound heating resistors include spiral heating resistors with the resistance wire wound into a helical shape, suitable for space-constrained heating environments, and straight heating resistors with the resistance wire wound directly into a straight line, suitable for linear heating requirements. Plate heating resistors include metal plate heating resistors with the resistance wire fixed to a metal plate, suitable for large-area heating, and ceramic plate heating resistors with the resistance wire fixed to a ceramic plate, featuring high temperature and corrosion resistance. However, most existing spiral heating resistors use welding and plug-in connections to wires. When faced with wires of varying thicknesses and power ratings, they cannot be quickly and efficiently connected, leading to reduced connection efficiency and practicality. Furthermore, if the set temperature is exceeded during use, most spiral heating resistors lack automatic circuit breaking functionality, resulting in reduced safety and practicality. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a spiral heating resistor, which aims to improve the problem that existing spiral heating resistors cannot quickly connect wires of different thicknesses and power ratings, resulting in reduced connection efficiency and decreased practicality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a spiral heating resistor, comprising a mounting tube, a fixed sleeve fixedly connected to the outer wall of the mounting tube, a sliding sleeve I provided in the middle of the outer wall of the mounting tube, a plurality of sliding rods slidably connected to the inner wall of the mounting tube, a limit block fixedly connected to an adjacent end of the sliding rod, a moving block I fixedly connected to the opposite end of the sliding rod, a rotating block rotatably connected to the outer wall of the moving block I, a rotating shaft rotatably connected to the bottom of the rotating block, a fixed block fixedly connected to the top of both the sliding sleeve I and the fixed sleeve, a pin II fixedly connected to the inner wall of the top fixed block, a plurality of positioning grooves provided in the inner wall of the pin II, a screw I slidably connected to the inner wall of the positioning groove, a nut I provided on the outer wall of the screw I, a resistance wire provided at the bottom of the mounting tube, and a circuit breaking structure fixedly connected to the middle of the bottom surface of the mounting tube, the circuit breaking structure being used to prevent overheating.

[0006] As a further description of the above technical solution:

[0007] The circuit breaking structure includes a hot-melt wire, the top end of which is fixedly connected to the bottom of the mounting tube, and the bottom end of which is fixedly connected to a mounting block. The inner wall of the mounting block has a second slot, and the inner wall of the resistance wire has a first slot. A limit sleeve is fixedly connected to the outer wall of the resistance wire near its edge. A first pin is slidably connected to the inner wall of the second slot, and a positioning plate is provided on the outer wall of the first pin. A U-shaped ring is slidably connected to the inner wall of the first pin.

[0008] As a further description of the above technical solution:

[0009] A rubber pad is fixedly connected to the outer wall of the limiting block, and multiple heat-conducting blocks are fixedly connected to the outer wall of the resistance wire. All the multiple heat-conducting blocks are fixedly connected at the same horizontal height.

[0010] As a further description of the above technical solution:

[0011] A sliding sleeve 2 is fixed in the middle of the outer wall of the resistance wire, and a limit plate 1 is provided at the bottom of the sliding sleeve 2.

[0012] As a further description of the above technical solution:

[0013] The top of the sliding sleeve 2 is provided with a limiting plate 2, and both the limiting plate 2 and the limiting plate 1 have sliding grooves on their adjacent sides.

[0014] As a further description of the above technical solution:

[0015] The inner wall of the second limiting plate is slidably connected to the four corners of the second screw, and the bottom end of the second screw is fixedly connected to the limiting plate.

[0016] As a further description of the above technical solution:

[0017] The outer wall of the screw is provided with a nut, and the inner wall of the nut is threadedly connected to the outer wall of the screw.

[0018] As a further description of the above technical solution:

[0019] A rubber pad is fixedly connected to the bottom of the positioning disk, and the outer wall of the pin is slidably connected to the inner wall of the slot.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, by inserting the power supply into the corresponding installation tube, then pulling the sliding sleeve to drive the rotating block to rotate and move, and then pulling the moving block to push the sliding rod to pull the limiting block to clamp the wire, and simultaneously inserting the screw into the corresponding positioning groove, and then rotating the nuts at both ends to limit their position, the purpose of quickly connecting to different power supplies is achieved, improving practicality and speeding up installation efficiency.

[0022] 2. In this utility model, by inserting the mounting block into the resistance wire, then inserting the first pin into the first and second slots, finally placing the positioning plate on the outer wall of the first pin, and finally inserting the U-shaped ring into the first pin, the hot fuse will break when the temperature is high, thus achieving the purpose of avoiding short circuits and fires caused by excessive temperature, and improving safety and practicality. Attached Figure Description

[0023] Figure 1 This is a perspective view of the front side of a spiral heating resistor proposed in this utility model.

[0024] Figure 2 This is a partial structural schematic diagram of a spiral heating resistor proposed in this utility model;

[0025] Figure 3 for Figure 2 Enlarged view of point A;

[0026] Figure 4 This is a partial structural diagram of a spiral heating resistor proposed in this utility model;

[0027] Figure 5 This is a partial structural exploded view of a spiral heating resistor proposed in this utility model;

[0028] Figure 6 For this Figure 5 Enlarged view of point B.

[0029] Legend:

[0030] 1. Installation pipe; 2. Circuit breaker structure; 201. U-shaped ring; 202. Pin 1; 203. Positioning plate; 204. Limiting sleeve; 205. Slot 1; 206. Fixing block; 207. Slot 2; 208. Hot melt wire; 3. Moving block 1; 4. Rotating block; 5. Rotating shaft; 6. Fixing block; 7. Pin 2; 8. Screw 1; 9. Nut 1; 10. Positioning groove; 11. Sliding rod; 12. Limiting block; 13. Sliding sleeve 1; 14. Fixing sleeve; 15. Resistance wire; 16. Limiting plate 1; 17. Slide groove; 18. Limiting plate; 19. Nut 2; 20. Limiting plate 2; 21. Screw 2; 22. Sliding sleeve 2; 23. Rubber pad 1; 24. Heat-conducting block; 25. Rubber pad 2. Detailed Implementation

[0031] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see the appendix Figure 1 - Appendix Figure 3 This utility model provides an embodiment of a spiral heating resistor, including a mounting tube 1. A fixing sleeve 14 is fixedly connected to the outer wall of the mounting tube 1. A sliding sleeve 13 is provided in the middle of the outer wall of the mounting tube 1. The mounting tube 1 is used to connect with an electric wire. A plurality of sliding rods 11 are slidably connected to the inner wall of the mounting tube 1. A limiting block 12 is fixedly connected to an adjacent end of the sliding rod 11. A moving block 3 is fixedly connected to the opposite end of the sliding rod 11. The limiting block 12 is used to clamp the electric wire. A rotating block 4 is rotatably connected to the outer wall of the moving block 3. A rotating shaft 5 is rotatably connected to the bottom of the rotating block 4. The rotating shaft 5 is used to control the rotation of the moving block 4. The rotation of 4 is supported. The top of the sliding sleeve 13 and the fixed sleeve 14 are both fixedly connected to the fixed block 6. The inner wall of the top fixed block 6 is fixedly connected to the pin 2 7. The pin 2 7 is used to insert into the fixed block 6. The inner wall of the pin 2 7 is provided with multiple positioning grooves 10. The inner wall of the positioning groove 10 is slidably connected to the screw 1 8. The outer wall of the screw 1 8 is provided with the nut 9. The screw 1 8 is used to insert into the positioning groove 10. The bottom of the mounting tube 1 is provided with the resistance wire 15. The bottom surface of the mounting tube 1 is fixedly connected to the middle of the circuit breaking structure 2. The circuit breaking structure 2 is used to prevent the temperature from getting too high. The nut 9 can limit the position of the screw 1 8.

[0033] Specifically, the presence of the limiting block 12 effectively restricts the position of the sliding rod 11 during the sliding process, ensuring that it will not slide excessively and fall out of the control range of the mounting tube 1. The moving block 3 expands the functional range of the sliding rod 11. The sliding sleeve 13 lays the foundation for the dynamic adjustment function of the entire device. The fixing block 6 provides a support point for the subsequent component installation and functional realization. By setting the nut 9 on the outer wall of the screw 8, the position of the screw 8 in the positioning groove 10 can be locked, thereby realizing the adjustment and fixation of the position of the component associated with the pin 7.

[0034] Please see the appendix Figure 4 - Appendix Figure 6 The circuit breaking structure 2 includes a hot fuse 208. The top end of the hot fuse 208 is fixedly connected to the bottom of the mounting tube 1. The hot fuse 208 is used to self-melt after high temperature. The bottom end of the hot fuse 208 is fixedly connected to a mounting block 206. The inner wall of the mounting block 206 is provided with a second slot 207. The inner wall of the resistance wire 15 is provided with a first slot 205. The mounting block 206 is used to insert into the inner wall of the resistance wire 15. The outer wall of the resistance wire 15 is fixedly connected to a limiting sleeve 204 near the edge. The inner wall of the second slot 207 is slidably connected to a first pin 202. The first pin 202 can limit the mounting block 206. The outer wall of the first pin 202 is provided with a positioning plate 203. The inner wall of the first pin 202 is slidably connected to a U-shaped ring 201. The U-shaped ring 201 can limit the position of the first pin 202.

[0035] Specifically, the limiting sleeve 204 can enhance the structural strength of the resistance wire 15 and also play a certain limiting role in the sliding of the pin 202. The diameter of the positioning plate 203 is larger than that of the pin 202, which makes it convenient for the operator to accurately adjust the position of the pin 202. The U-shaped ring 201 is made of a metal material with good elasticity and can be inserted into the arc groove in the pin 202. The hot melt wire 208 can melt at a specific temperature.

[0036] Please see the appendix Figure 2 - Appendix Figure 4 The top of the sliding sleeve 22 is provided with a limiting plate 20. The adjacent sides of the limiting plate 20 and the limiting plate 16 are provided with sliding grooves 17. The sliding sleeve 22 is fixed in the middle of the outer wall of the resistance wire 15. The limiting plate 20 and the limiting plate 16 are used to limit the position of the sliding sleeve 22. The bottom of the sliding sleeve 22 is provided with a limiting plate 16. The outer wall of the limiting block 12 is fixedly connected with a rubber pad 25. The rubber pad 25 is used to increase the friction of the outer wall of the limiting block 12. The outer wall of the resistance wire 15 is fixedly connected with multiple heat-conducting blocks 24. The multiple heat-conducting blocks 24 are all fixedly connected at the same horizontal height. The heat-conducting blocks 24 are used to ensure uniform temperature.

[0037] Specifically, the slide groove 17 is used to guide the sliding sleeve 22 to slide within it, thereby guiding the connection end of the resistance wire 15 to separate, thus facilitating installation. The limiting plate 20 and the limiting plate 16 can limit the upper and lower sides of the connection end of the resistance wire 15. The rubber pad 25 is used to increase the friction of the outer wall of the limiting block 12, and at the same time, it can prevent the wire from being damaged due to excessive pressure applied by the limiting block 12.

[0038] Please see the appendix Figure 3 - Appendix Figure 5 Screw 21 is slidably connected to the four corners of the inner wall of the second limiting plate 20. The bottom end of the screw 21 is fixedly connected to the limiting plate 20 and its bottom. The bottom of the positioning plate 203 is fixedly connected to the rubber pad 23. The limiting plate 18 is used to limit the mechanism at the bottom end of the screw 21. The outer wall of the pin 202 is slidably connected to the inner wall of the slot 205. The outer wall of the screw 21 is provided with a nut 19. The inner wall of the nut 19 is threadedly connected to the outer wall of the screw 21. The nut 19 is used to limit the limiting plate 20 and the screw 21.

[0039] Specifically, the rubber pad 23 can increase the friction at the bottom of the positioning plate 203 while preventing excessive pressure on the bottom of the positioning plate 203 during installation and limiting, which could damage the structure connected to it. The nut 19 can rotate on the outer wall of the screw 21, thereby limiting the position of the limiting plate 20 to a specified position on the outer wall of the screw 21. The limiting plate 18 can limit the position of the bottom of the screw 21, preventing it from moving out of the predetermined range of motion.

[0040] Working principle: When the resistor needs to be connected to the power supply, first insert the positive and negative terminals into the corresponding mounting tube 1 respectively. Then slide the sliding sleeve 13 to pull the rotating block 4, so that it can rotate along the rotating shaft 5. Then pull the moving block 3 to press the sliding rod 11 inward, which in turn drives the limiting block 12 to limit the wire. Then insert the screw 8 into the corresponding positioning groove 10, and then rotate the nut 9 to limit the screw 8, which in turn limits the pin 7, so that the sliding sleeve 13 cannot move.

[0041] When making the connection, first insert the mounting block 206 into the resistance wire 15, then insert the first pin 202 into the first slot 205, and then into the second slot 207, so that its bottom end can contact the top of the limiting sleeve 204. Then, put the positioning plate 203 on the outer wall of the first pin 202, and then insert the U-shaped ring 201 into the first pin 202 and rotate it, thereby connecting the hot fuse 208 to the resistance wire 15. When the temperature is too high and it is easy to spontaneously combust, the hot fuse 208 will break due to the high temperature to avoid fire.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A helical heating resistor comprising a mounting tube (1) characterised in that: The outer wall of the installation pipe (1) is fixedly connected with a fixed sleeve (14), the middle of the outer wall of the installation pipe (1) is provided with a sliding sleeve (13), the inner wall of the installation pipe (1) is slidably connected with a plurality of sliding rods (11), the adjacent end of the sliding rod (11) is fixedly connected with a limiting block (12), the distal end of the sliding rod (11) is fixedly connected with a moving block (3), the outer wall of the moving block (3) is rotatably connected with a rotating block (4), the bottom of the rotating block (4) is rotatably connected with a rotating shaft (5), the top of the sliding sleeve (13) and the fixed sleeve (14) is fixedly connected with a fixed block (6), the inner wall of the fixed block (6) is fixedly connected with a bolt (7), a plurality of positioning grooves (10) are formed in the inner wall of the bolt (7), the inner wall of the positioning groove (10) is slidably connected with a screw rod (8), the outer wall of the screw rod (8) is provided with a nut (9), the bottom of the installation pipe (1) is provided with a resistance wire (15), the bottom surface of the installation pipe (1) is fixedly connected with a breaking structure (2), and the breaking structure (2) is used for preventing the temperature from being too high.

2. A helical heating resistor according to claim 1, characterised in that: The breaking structure (2) comprises a thermal fuse (208), the top end of the thermal fuse (208) is fixedly connected with the bottom of the installation pipe (1), the bottom end of the thermal fuse (208) is fixedly connected with a mounting block (206), the inner wall of the mounting block (206) is provided with a clamping groove (207), the inner wall of the resistance wire (15) is provided with a clamping groove (205), the outer wall of the resistance wire (15) is fixedly connected with a limiting sleeve (204) near the edge, the inner wall of the clamping groove (207) is slidably connected with a bolt (202), the outer wall of the bolt (202) is provided with a positioning disc (203), and the inner wall of the bolt (202) is slidably connected with a U-shaped ring (201).

3. A helical heating resistor according to claim 1, wherein: The outer wall of the limiting block (12) is fixedly connected with a rubber pad (25), the outer wall of the resistance wire (15) is fixedly connected with a plurality of heat-conducting blocks (24), and the plurality of heat-conducting blocks (24) are fixedly connected at the same horizontal height.

4. A helical heating resistor according to claim 1, wherein: The outer wall of the resistance wire (15) is fixedly connected with a sliding sleeve (22) in the middle, and the bottom of the sliding sleeve (22) is provided with a limiting plate (16).

5. A helical heating resistor according to claim 4, wherein: The top of the sliding sleeve (22) is provided with a limiting plate (20), and the adjacent side of the limiting plate (20) and the limiting plate (16) is provided with a sliding groove (17).

6. A helical heating resistor according to claim 5, wherein: The inner wall of the limiting plate (20) is slidably connected with a screw rod (21) at four corners, and the bottom end of the screw rod (21) is fixedly connected with a limiting disc (18).

7. A helical heating resistor according to claim 6, wherein: The outer wall of the screw rod (21) is provided with a nut (19), and the inner wall of the nut (19) is threadedly connected with the outer wall of the screw rod (21).

8. A helical heating resistor according to claim 2, wherein: The bottom of the positioning disc (203) is fixedly connected with a rubber pad (23), and the outer wall of the bolt (202) is slidably connected with the inner wall of the clamping groove (205).

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