Electric heating tube fixing structure of electric heater

Abstract

The electric heating tube fixing structure comprises an electric heater shell, a mounting plate arranged at an opening in the left side of the electric heater shell and a U-shaped electric heating tube arranged in the electric heater shell, and the U-shaped electric heating tube is movably mounted on the mounting plate; a limiting sealing plate is arranged on the U-shaped electric heating pipe, and a sleeving hole is formed in the limiting sealing plate. The electric heating tube fixing structure of the electric heater is simple in structure, can be operated only by positively and negatively rotating the knob, so that the fixing process of the U-shaped electric heating tube is very convenient, and the problems that a large amount of bolts are used for fastening when the existing electric heating tube is installed and fixed, a large amount of time is consumed for aligning screw holes, and the installation is inconvenient are solved. The problems that threads are prone to slipping, fastening is not firm and the like are solved, the working efficiency is greatly improved, the looseness phenomenon is not prone to occurring after fixing, the later maintenance cost and frequency are reduced, and it is guaranteed that the overall fixing and using effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of electric heating pipe fixing, and in particular to an electric heating pipe fixing structure of an electric heater. Background Art

[0002] In today's heating equipment market, electric heaters are widely used in a variety of applications, such as household water heaters, industrial drying equipment, and various small heating appliances, thanks to their efficient and convenient heating properties. The heating element, the core heating component, is crucial for the performance, safety, and production efficiency of electric heaters.

[0003] However, existing methods for fixing and installing electric heating pipes often rely on complex mechanical connections, such as the extensive use of nuts and bolts for fastening. This not only requires operators to perform delicate operations in a confined space and spend a considerable amount of time aligning the screw holes, but is also prone to problems such as thread stripping and loose fastening, leading to frequent rework during the installation process and significantly reducing production efficiency. Furthermore, some existing fixing structures are prone to loosening after being fixed in use, affecting the stability of the electrical connection between the electric heating pipe and surrounding components, posing a hidden danger to the safe and stable operation of the equipment and increasing the cost and frequency of subsequent maintenance.

[0004] In summary, the existing electric heating tube fixing structure urgently needs an innovative design to overcome problems such as inconvenient installation, low efficiency and insufficient stability, and meet the growing efficiency and safety needs of the electric heater industry. Summary of the Invention

[0005] Based on the technical problems existing in the background technology, the present invention proposes an electric heating tube fixing structure of an electric heater.

[0006] The present invention provides an electric heating tube fixing structure for an electric heater, comprising an electric heater housing, a mounting plate arranged at a left opening of the electric heater housing, and a U-shaped electric heating tube arranged in the electric heater housing, wherein the U-shaped electric heating tube is movably mounted on the mounting plate; a limiting sealing plate is provided on the U-shaped electric heating tube, wherein the limiting sealing plate is provided with a socket hole, and the limiting sealing plate is fixedly sleeved on the U-shaped electric heating tube through the socket hole; a first plug-in mounting hole is provided on the mounting plate, and the two left end portions of the U-shaped electric heating tube respectively penetrate to the left side of the first plug-in mounting hole and are fixedly connected to wiring terminals, and the wiring terminals are also provided with insulating ends;

[0007] The left middle part of the limit sealing plate is fixedly connected with a mounting post, and a second plug-in mounting hole is provided on the mounting plate, and the left end of the mounting post is movably inserted in the second plug-in mounting hole and extends to the left side of the second plug-in mounting hole; a storage cavity is provided inside the mounting post, and a conical disk is movably installed in the storage cavity along the horizontal direction, and the outer side of the conical disk is a trumpet-shaped structure, and a plurality of positioning posts are movably connected on the circumference of the conical disk, and the other end of the positioning post is movably passed through the outside of the mounting post and positioned with the left side of the mounting plate;

[0008] The left end of the conical disk is fixedly connected with a threaded connecting pipe, the left end of the threaded connecting pipe is connected with a threaded rod through a thread, and the left end of the threaded rod is rotated to pass through the left side of the installation column and fixedly connected with a knob.

[0009] As a further feature of the present invention, a plurality of positioning posts are evenly arranged on the circumference of the conical disk in an annular shape based on the circumferential center of the conical disk.

[0010] As a further feature of the present invention, a plurality of balls are rollingly mounted on the circumference of the conical disk, an arcuate groove is provided on one end of the positioning column close to the conical disk, and the conical disk is rollingly connected to the inner wall of the arcuate groove on the positioning column through the balls.

[0011] As a further feature of the present invention, the left side of the positioning column is fixedly connected to a guide frame, a guide hole is provided on the guide frame, and a guide rod is movably sleeved on the guide frame through the guide hole, one end of the guide rod is fixedly connected to the inner wall of the storage cavity, and the other end of the guide rod is fixedly connected to a cross column, and the outside of the cross column is also fixedly connected to a connecting rod, the other end of the connecting rod is fixedly connected to the inner wall of the storage cavity, and the guide frame is movably sleeved on the connecting rod along the length direction of the guide rod, and an elastic return spring sleeved on the connecting rod is fixedly connected between the guide frame and the inner wall of the storage cavity.

[0012] As a further feature of the present invention, the connecting rod and the guide rod are arranged parallel to each other, and a through hole is also provided on the guide frame, and the guide frame is movably mounted on the connecting rod through the through hole; a guide rail is provided on the inner side of the horizontal column, and a slider is fixedly provided on the outer side of the threaded connecting tube, and the slider is slidably installed on the guide rail in a horizontal direction; a compensation spring mounted on the threaded rod is fixedly connected between the slider and the left inner wall of the storage cavity.

[0013] As a further feature of the present invention, a bearing is provided on the left inner wall of the storage chamber, and the threaded rod is rotatably mounted on the bearing; a storage hole is provided on the inner wall of the storage chamber, and the positioning column movably passes through the storage hole.

[0014] As a further feature of the present invention, a spring groove is provided on the right inner wall of the storage cavity, a compensation spring is fixedly connected in the spring groove, and the other end of the compensation spring is fixedly connected to the right end of the conical disk.

[0015] As a further feature of the present invention, the left end of the electric heater housing is further provided with an end cover, and the end cover is mounted on the mounting plate and the left end of the electric heater housing by bolts.

[0016] The beneficial effects of the present invention are:

[0017] The U-shaped electric heating tube is fixed to the mounting plate by inserting the left end of the U-shaped electric heating tube into the first plug-in mounting hole of the mounting plate, and the limiting sealing plate fixedly connected to the U-shaped electric heating tube is in close contact with the right side of the mounting plate. The threaded rod is rotated by the knob to transmit the threaded connection tube to the left on the threaded rod. When the threaded connection tube moves left, the conical disk is driven to the left. The left movement of the conical disk also rolls through the ball bearing and the arc groove on the positioning column, and prompts the positioning column to move from the storage cavity to the outside of the mounting plug column, thereby enabling multiple positioning columns to limit and position the left side of the mounting plate. In this way, the limiting sealing plate and the U-shaped electric heating tube can be installed and fixed on the mounting plate, and the structure is simple. The fixing operation can be performed by only rotating the knob forward and backward, which makes the fixing process very convenient. At the same time, one knob can control the movement and positioning of multiple positioning columns, which is very efficient.

[0018] In the present invention, after being fixed, the compensation spring and the compensation spring will both produce elastic compensation, which can make the threaded connection between the threaded connection pipe and the threaded rod tighter and less likely to cause the thread to loosen. In this way, the conical disk at the right end of the threaded connection pipe can be firmly positioned in the receiving cavity, and the positioning column outside the circumference of the conical disk can stably limit the positioning of the mounting plate, thereby ensuring that the U-shaped electric heating tube is firmly fixed on the mounting plate.

[0019] To sum up, the electric heating tube fixing structure of the electric heater has a simple structure and can be operated by only turning the knob forward and backward, which makes it very convenient to fix the U-shaped electric heating tube. It avoids the existing electric heating tube from using a large number of bolts for tightening during installation and fixation, which consumes a lot of time to align the screw holes, easily causing problems such as thread slippage and loose tightening. It greatly improves work efficiency and is not prone to loosening after fixation. At the same time, there are multiple positioning columns and they are evenly arranged along the circumferential direction, which can stably limit the positioning of the mounting plate, reduce the subsequent maintenance cost and frequency, and ensure better overall fixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of an electric heating tube fixing structure of an electric heater proposed by the present invention;

[0021] Figure 2 It is a partially enlarged structural schematic diagram of the present invention;

[0022] Figure 3This is a schematic diagram of the structure between the limiting sealing plate and the installation plug in the present invention;

[0023] Figure 4 This is a partial structural diagram of the present invention after the internal section of the installation column;

[0024] Figure 5 Schematic diagram of the structure between the conical disk and the positioning column in the present invention;

[0025] Figure 6 This is a schematic diagram of the structure between the limiting sealing plate and the mounting posts of the present invention when not cut away.

[0026] In the figure: 1. Electric heater housing; 101. End cover; 102. Bolt; 2. Mounting plate; 201. First plug-in mounting hole; 202. Second plug-in mounting hole; 3. U-shaped electric heating tube; 301. Wiring terminal; 302. Insulation terminal; 4. Limit sealing plate; 401. Socket hole; 5. Mounting post; 501. Storage cavity; 502. Storage hole; 6. Knob; 7. Threaded rod; 8. Threaded connecting pipe; 9. Conical disk; 901. Ball; 10. Compensating spring; 11. Positioning column; 1101. Arc-shaped slide groove; 12. Guide frame; 121. Guide hole; 13. Guide rod; 14. Connecting rod; 15. Elastic reset spring; 16. Cross column; 17. Slider; 18. Guide rail; 19. Compensating spring; 20. Bearing. DETAILED DESCRIPTION

[0027] The present invention will be further explained below with reference to specific embodiments.

[0028] Example

[0029] refer to Figure 1-6 In this embodiment, a fixing structure for an electric heating tube of an electric heater is proposed, comprising an electric heater housing 1, a mounting plate 2 arranged at the left opening of the electric heater housing 1, and a U-shaped electric heating tube 3 arranged in the electric heater housing 1, and the U-shaped electric heating tube 3 is movably mounted on the mounting plate 2; a limiting sealing plate 4 is provided on the U-shaped electric heating tube 3, and a sleeve hole 401 is provided on the limiting sealing plate 4, and the limiting sealing plate 4 is fixedly sleeved on the U-shaped electric heating tube 3 through the sleeve hole 401; a first plug-in mounting hole 201 is provided on the mounting plate 2, and the two left ends of the U-shaped electric heating tube 3 respectively penetrate the left side of the first plug-in mounting hole 201 and are fixedly connected to the wiring terminal 301, and the wiring terminal 301 is also provided with an insulating end 302;

[0030] like Figure 2-4In the middle, the left middle part of the limiting sealing plate 4 is fixedly connected with a mounting post 5, and a second plug-in mounting hole 202 is provided on the mounting plate 2. The left end of the mounting post 5 is movably inserted into the second plug-in mounting hole 202 and extends to the left side of the second plug-in mounting hole 202; a storage cavity 501 is provided inside the mounting post 5, and a conical disk 9 is movably installed in the storage cavity 501 along the horizontal direction. The outer side of the conical disk 9 is a trumpet-shaped structure, and a plurality of positioning columns 11 are movably connected on the circumference of the conical disk 9, and the other end of the positioning column 11 is movably passed through the outside of the mounting post 5 and positioned on the left side of the mounting plate 2; the left end of the conical disk 9 is fixedly connected with a threaded connecting pipe 8, and the left end of the threaded connecting pipe 8 is threadedly connected to a threaded rod 7, and the left end of the threaded rod 7 is rotated to pass through the left side of the mounting post 5 and is fixedly connected with a knob 6.

[0031] like Figure 4-5 In the figure, multiple positioning posts 11 are evenly arranged on the circumference of the conical disk 9 based on the circumferential center of the conical disk 9; multiple balls 901 are rollingly installed on the circumference of the conical disk 9, and an arc-shaped groove 1101 is provided at one end of the positioning post 11 close to the conical disk 9, and the conical disk 9 is rollingly connected to the inner wall of the arc-shaped groove 1101 on the positioning post 11 through the balls 901.

[0032] like Figure 4 In the figure, the left side of the positioning column 11 is fixedly connected to a guide frame 12, and a guide hole 121 is provided on the guide frame 12. A guide rod 13 is movably sleeved on the guide frame 12 through the guide hole 121. One end of the guide rod 13 is fixedly connected to the inner wall of the storage cavity 501, and the other end of the guide rod 13 is fixedly connected to a cross column 16. The outer side of the cross column 16 is also fixedly connected to a connecting rod 14, and the other end of the connecting rod 14 is fixedly connected to the inner wall of the storage cavity 501, and the guide frame 12 is movably sleeved on the connecting rod 14 along the length direction of the guide rod 13. An elastic return spring 15 sleeved on the connecting rod 14 is fixedly connected between the guide frame 12 and the inner wall of the storage cavity 501.

[0033] like Figure 4 In the figure, the connecting rod 14 and the guide rod 13 are arranged parallel to each other, and a through hole is also provided on the guide frame 12, and the guide frame 12 is movably mounted on the connecting rod 14 through the through hole; a guide rail 18 is provided on the inner side of the cross column 16, and a slider 17 is fixedly provided on the outer side of the threaded connecting tube 8, and the slider 17 is slidably installed on the guide rail 18 in the horizontal direction; a compensation spring 19 mounted on the threaded rod 7 is fixedly connected between the slider 17 and the left inner wall of the storage chamber 501.

[0034] like Figure 4In the figure, a bearing 20 is provided on the left inner wall of the storage chamber 501, and the threaded rod 7 is rotatably installed on the bearing 20; a storage hole 502 is provided on the inner wall of the storage chamber 501, and the positioning column 11 is movable through the storage hole 502; a spring groove is provided on the right inner wall of the storage chamber 501, and a compensation spring 10 is fixedly connected in the spring groove, and the other end of the compensation spring 10 is fixedly connected to the right end of the conical disk 9.

[0035] The left end of the electric heater housing 1 is further provided with an end cover 101 , and the end cover 101 is mounted on the mounting plate 2 and the left end of the electric heater housing 1 by means of bolts 102 .

[0036] like Figure 1-6The electric heating tube fixing structure of an electric heater shown in the figure, before fixing and using, first store the positioning column 11 into the receiving cavity 501 inside the mounting plug column 5, that is, rotate the threaded rod 7 by the knob 6, so that the threaded connecting tube 8 is threaded to the right on the threaded rod 7, and when the threaded connecting tube 8 moves to the right, it drives the conical disk 9 to move to the right and compresses the compensation spring 10. At the same time, when the conical disk 9 moves to the right, the elastic return spring 15 will produce an elastic reaction, so that the guide frame 12 and the positioning column 11 move into the receiving cavity 501 for storage, and then the positioning column 11 can be stored in the receiving hole 502; then, when it is necessary to install and fix the U-shaped electric heating tube 3, the left end of the U-shaped electric heating tube 3 is inserted into the first plug-in mounting hole 201 on the mounting plate 2, and the U The limiting sealing plate 4 fixedly connected to the U-shaped electric heating tube 3 is in close contact with the right side of the mounting plate 2, and then the threaded rod 7 is rotated in the opposite direction by the knob 6, so that the threaded connecting tube 8 is threadedly transmitted to the left on the threaded rod 7. When the threaded connecting tube 8 moves to the left, it drives the conical disk 9 to move to the left. The conical disk 9 moves to the left through the ball 901 and the arc groove 1101 on the positioning column 11, and prompts the positioning column 11 to move from the storage cavity 501 to the outside of the mounting column 5, so that the positioning column 11 can limit the positioning of the left side of the mounting plate 2, so that the limiting sealing plate 4 and the U-shaped electric heating tube 3 can be installed and fixed on the mounting plate 2, and then the mounting plate 2 and the end cover 101 are installed on the left end of the electric heater housing 1 by bolts 102 to complete the installation. After installation and fixation, the compensation spring 10 and the compensation spring 19 will produce elastic compensation effect, which can make the threaded connection between the threaded connecting tube 8 and the threaded rod 7 tighter and less likely to cause the thread to loosen, so as to ensure that the conical disk 9 at the right end of the threaded connecting tube 8 is firmly positioned in the storage cavity 501, thereby ensuring that the positioning column 11 on the outer circumference of the conical disk 9 can stably limit the positioning of the mounting plate 2. Ultimately, this can ensure that the U-shaped electric heating tube 3 is firmly fixed on the mounting plate 2, and the structure is simple, and only the forward and reverse rotation of the knob 6 is required to operate, which makes it very convenient to fix the U-shaped electric heating tube 3, avoiding the existing electric heating tube when installing and fixing due to the large number of bolts used for tightening, which consumes a lot of time to align the screw holes, easily causing problems such as thread stripping and loose tightening, greatly improving work efficiency, and not prone to loosening after fixation, reducing the later maintenance cost and frequency, and ensuring better overall fixed use effect.

[0037] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A heating tube fixing structure for an electric heater, comprising an electric heater housing (1), a mounting plate (2) arranged at a left opening of the electric heater housing (1), and a U-shaped electric heating tube (3) arranged in the electric heater housing (1), wherein the U-shaped electric heating tube (3) is movably mounted on the mounting plate (2); characterized in that: The U-shaped electric heating tube (3) is provided with a limiting sealing plate (4), the limiting sealing plate (4) is provided with a sleeve hole (401), and the limiting sealing plate (4) is fixedly sleeved on the U-shaped electric heating tube (3) through the sleeve hole (401); the mounting plate (2) is provided with a first plug-in mounting hole (201), and the two left end portions of the U-shaped electric heating tube (3) respectively penetrate to the left side of the first plug-in mounting hole (201) and are fixedly connected with a wiring terminal (301), and the wiring terminal (301) is also provided with an insulating end (302); The left middle part of the limiting sealing plate (4) is fixedly connected with a mounting post (5), a second plug-in mounting hole (202) is provided on the mounting plate (2), and the left end of the mounting post (5) is movably inserted into the second plug-in mounting hole (202) and extends to the left side of the second plug-in mounting hole (202); a receiving cavity (501) is provided inside the mounting post (5), and a conical disk (9) is movably installed in the receiving cavity (501) along the horizontal direction, the outer side of the conical disk (9) is a trumpet-shaped structure, and a plurality of positioning posts (11) are movably connected on the circumference of the conical disk (9), and the other end of the positioning post (11) is movably inserted into the outside of the mounting post (5) and positioned and matched with the left side of the mounting plate (2); The left end of the conical disk (9) is fixedly connected to a threaded connecting pipe (8), the left end of the threaded connecting pipe (8) is threadedly connected to a threaded rod (7), and the left end of the threaded rod (7) rotates and passes through the left side of the installation plug (5) and is fixedly connected to a knob (6).

2. The electric heating tube fixing structure of an electric heater according to claim 1, characterized in that: A plurality of positioning posts (11) are evenly arranged on the circumference of the conical disk (9) in an annular shape based on the circumferential center of the conical disk (9).

3. The electric heating tube fixing structure of an electric heater according to claim 1, characterized in that: A plurality of balls (901) are rollingly mounted on the circumference of the conical disk (9), an arcuate chute (1101) is provided on one end of the positioning column (11) close to the conical disk (9), and the conical disk (9) is rollingly connected to the inner wall of the arcuate chute (1101) on the positioning column (11) through the balls (901).

4. The electric heating tube fixing structure of an electric heater according to claim 1, characterized in that: The left side of the positioning column (11) is fixedly connected to a guide frame (12), a guide hole (121) is provided on the guide frame (12), a guide rod (13) is movably sleeved on the guide frame (12) through the guide hole (121), one end of the guide rod (13) is fixedly connected to the inner wall of the storage chamber (501), the other end of the guide rod (13) is fixedly connected to a cross column (16), the outer side of the cross column (16) is also fixedly connected to a connecting rod (14), the other end of the connecting rod (14) is fixedly connected to the inner wall of the storage chamber (501), and the guide frame (12) is movably sleeved on the connecting rod (14) along the length direction of the guide rod (13), and an elastic return spring (15) sleeved on the connecting rod (14) is fixedly connected between the guide frame (12) and the inner wall of the storage chamber (501).

5. The electric heating tube fixing structure of an electric heater according to claim 4, characterized in that: The connecting rod (14) and the guide rod (13) are arranged parallel to each other. A through hole is also provided on the guide frame (12). The guide frame (12) is movably sleeved on the connecting rod (14) through the through hole.

6. The electric heating tube fixing structure of an electric heater according to claim 4, characterized in that: A guide rail (18) is provided on the inner side of the transverse column (16), and a slider (17) is fixedly provided on the outer side of the threaded connecting tube (8). The slider (17) is slidably mounted on the guide rail (18) in a horizontal direction; a compensation spring (19) sleeved on the threaded rod (7) is fixedly connected between the slider (17) and the left inner wall of the storage chamber (501).

7. The electric heating tube fixing structure of an electric heater according to claim 1, characterized in that: A bearing (20) is provided on the left inner wall of the receiving chamber (501), and the threaded rod (7) is rotatably mounted on the bearing (20); a receiving hole (502) is provided on the inner wall of the receiving chamber (501), and the positioning column (11) movably passes through the receiving hole (502).

8. The electric heating tube fixing structure of an electric heater according to claim 1, characterized in that: A spring plate groove is provided on the right inner wall of the receiving cavity (501), a compensation spring plate (10) is fixedly connected in the spring plate groove, and the other end of the compensation spring plate (10) is fixedly connected to the right end of the conical disk (9).

9. The electric heating tube fixing structure of an electric heater according to claim 1, characterized in that: The left end of the electric heater housing (1) is further provided with an end cover (101), and the end cover (101) is mounted on the mounting plate (2) and the left end of the electric heater housing (1) via bolts (102).

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