Leading-out rod for electric heating

Abstract

The utility model relates to the technical field of electric heating tubes, in particular to a lead-out rod for electric heating, which comprises an outer tube, a lead-out rod body and a resistance wire, and the end part of the outer tube is provided with an insulating ring; according to the utility model, the connecting head at the end part of the resistance wire is sleeved on the lantern ring, and then the two groups of arc-shaped clamping plates can be arranged on the end part of the leading-out rod body close to the outer tube through the mounting assembly, so that the lantern ring sleeved on the connecting head can be wrapped in the two groups of arc-shaped clamping plates; meanwhile, a lantern ring can be clamped in the arc-shaped clamping plate through a plurality of sets of clamping jaws in the arc-shaped clamping plate, so that the lantern ring connected to the connector in a sleeving mode cannot fall off, and compared with a welding mode, the reliability of connection between the resistance wire and the lead-out rod body is effectively improved; the lead-out rod body installed in the outer pipe can be conveniently detached from the outer pipe, and the lead-out rod body in the outer pipe can be conveniently checked or replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating tubes, in particular to a lead-out rod for electric heating. Background Art

[0002] The existing lead-out rod for electric heating is usually connected to the resistance wire by welding. When the temperature of the resistance wire rises, the welding part is easily broken due to heat, resulting in low connection reliability. In addition, it is not convenient to remove the lead-out rod from the outer tube for inspection or replacement. Utility Model Content

[0003] Based on the deficiencies in the prior art mentioned in the above background technology, the utility model provides a lead-out rod for electric heating.

[0004] The utility model overcomes the above technical problems by adopting the following technical solutions, specifically:

[0005] A lead-out rod for electric heating, comprising an outer tube, a lead-out rod body and a resistance wire, wherein an insulating ring is arranged at the end of the outer tube, and the end of the lead-out rod body passes through the insulating ring and extends into the interior of the outer tube, a clamping ring is arranged on the surface of the outer tube, and a rotary cover is also nested on the lead-out rod body, one end of the resistance wire is arranged with a sleeve ring, and one end of the lead-out rod body extending into the interior of the outer tube is arranged with a connector for the sleeve ring to be inserted, and two groups of arc-shaped clamping plates acting on the sleeve ring are installed on the lead-out rod body, and a plurality of groups of clamping claws are arranged inside the arc-shaped clamping plates;

[0006] Wherein, a threaded connection component is arranged between the outer tube and the rotary cover, and a mounting component is arranged between the lead-out rod body and the arc-shaped clamping plate.

[0007] As a further solution of the utility model: the threaded connection assembly includes an external thread arranged on the surface of the outer tube and an internal thread arranged on the inner surface of the screw cap.

[0008] As a further solution of the utility model: the installation component includes a screw hole opened on the outer tube, and a mounting hole arranged on the arc-shaped clamping plate and matching with the screw hole.

[0009] As a further solution of the utility model: a plurality of groups of inserting strips are arranged on the surface of the lead-out rod body, and slots for inserting the inserting strips are opened on the insulating ring.

[0010] As a further solution of the utility model: the outer surface of the rotary cover is provided with anti-slip grooves.

[0011] As a further solution of the utility model: the surfaces of the outer tube and the lead-out rod body are both provided with an anti-rust layer.

[0012] After adopting the above structure, the utility model has the following advantages compared with the prior art: by sleeve-connecting the connector at the end of the resistance wire on the collar, the two groups of arc-shaped clamping plates can be installed on the end position of the lead-out rod body close to the outer tube through the installation assembly. At this time, the two groups of arc-shaped clamping plates can cover the collar sleeved on the connector, and at the same time, several groups of claws inside the arc-shaped clamping plates can clamp the collar inside, so that the collar sleeved on the connector will not fall off. Compared with the welding method, the reliability of the connection between the resistance wire and the lead-out rod body is effectively improved. In addition, with the action of the collar, the screw cap, the threaded connection assembly, etc., the lead-out rod body installed inside the outer tube can be easily removed from the outer tube, thereby facilitating the inspection or replacement of the lead-out rod body inside the outer tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structural disassembly of the utility model.

[0014] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 3 It is a structural schematic diagram of the rotary cover and the arc-shaped clamping plate in the utility model.

[0016] Figure 4 It is a structural schematic diagram of the insulating ring and the slot in the utility model.

[0017] Figure 5 It is a schematic diagram of the structure of the resistance wire and the sleeve ring in the utility model.

[0018] In the figure: 1. outer tube; 2. lead rod body; 3. resistance wire; 4. insulating ring; 5. clamping ring; 6. screw cap; 7. sleeve ring; 8. connector; 9. arc clamping plate; 10. clamping claw; 11. external thread; 12. internal thread; 13. screw hole; 14. mounting hole; 15. insert strip; 16. slot; 17. anti-slip pattern. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] See also Figures 1 to 5In an embodiment of the utility model, a lead-out rod for electric heating comprises an outer tube 1, a lead-out rod body 2 and a resistance wire 3, an insulating ring 4 is arranged at the end of the outer tube 1, the end of the lead-out rod body 2 passes through the insulating ring 4 and extends into the interior of the outer tube 1, a clamping ring 5 is arranged on the surface of the lead-out rod body 2, a screw cap 6 is also nested on the lead-out rod body 2, a sleeve ring 7 is arranged at one end of the resistance wire 3, a connector 8 for inserting the sleeve ring 7 is arranged at one end of the lead-out rod body 2 extending into the interior of the outer tube 1, two groups of arc-shaped clamping plates 9 acting on the sleeve ring 7 are installed on the lead-out rod body 2, and a plurality of groups of claws 10 are arranged inside the arc-shaped clamping plates 9;

[0021] Wherein, a threaded connection component is provided between the outer tube 1 and the rotary cover 6, and a mounting component is provided between the lead-out rod body 2 and the arc-shaped clamping plate 9;

[0022] The collar 7 at one end of the resistance wire 3 can be sleeved on the connector 8, and the collar 7 is in conflict with the end of the lead-out rod body 2. At this time, the two groups of arc-shaped clamping plates 9 can be installed at the end position of the lead-out rod body 2 through the installation assembly. At this time, the two groups of arc-shaped clamping plates 9 can cover the collar 7 sleeved on the connector 8, and at the same time, several groups of claws 10 inside the arc-shaped clamping plates 9 can clamp the collar 7 inside, so that the collar 7 sleeved on the connector 8 will not fall off. Compared with the welding method, the reliability of the connection between the resistance wire 3 and the lead-out rod body 2 is effectively improved. By inserting the lead-out rod body 2 into the interior of the outer tube 1, as the lead-out rod body 2 extends into the interior of the outer tube 1, the collar 5 on the surface of the lead-out rod body 2 will fit with the insulating ring 4 at the end of the outer tube 1. At this time, the screw cap 6 nested on the lead-out rod body 2 is docked at The end of the outer tube 1 can be connected with the screw cap 6 through a threaded connection assembly by rotating the screw cap 6. The end of the screw cap 6 can squeeze the clamping ring 5 so that the clamping ring 5 always remains tightly fitted with the insulating ring 4 at the end of the outer tube 1 and will not separate, thereby allowing the lead-out rod body 2 to remain inserted into the interior of the outer tube 1 and not fall out. When the outer tube 1 and the lead-out rod body 2 need to be disassembled, the screw cap 6 can be loosened and fall off from the outer tube 1 under the action of the threaded connection assembly by rotating the screw cap 6 in the opposite direction. At this time, the clamping ring 5 is no longer squeezed by the screw cap 6 and can be separated from the insulating ring 4 at the end of the outer tube 1. Therefore, the lead-out rod body 2 is no longer restricted and can be easily pulled out of the outer tube 1, which is convenient for inspection or replacement of the lead-out rod body 2 inside the outer tube 1.

[0023] In one embodiment of the present utility model, the threaded connection assembly includes an external thread 11 provided on the surface of the outer tube 1 and an internal thread 12 provided on the inner surface of the screw cap 6;

[0024] The external thread 11 on the surface of the lead-out rod body 2 is threadably matched with the internal thread 12 on the inner surface of the screw cap 6. Therefore, after the screw cap 6 is docked at the end of the outer tube 1, it can be connected to the outer tube 1 by rotating the screw cap 6. The screw cap 6 can be loosened and fallen off from the outer tube 1 by rotating it in the opposite direction.

[0025] In another embodiment of the utility model, the mounting assembly includes a screw hole 13 opened on the outer tube 1, and a mounting hole 14 provided on the arc-shaped clamping plate 9 and matching with the screw hole 13;

[0026] Attach the arc-shaped clamping plate 9 to the end position of the outer tube 1 and align the mounting hole 14 on the arc-shaped clamping plate 9 with the screw hole 13 on the outer tube 1. At this time, pass the screw through the mounting hole 14 and screw it into the inside of the screw hole 13, so that the arc-shaped clamping plate 9 can be connected to the end of the outer tube 1 under the fixing action of the screw.

[0027] In another embodiment of the utility model, a plurality of groups of inserting strips 15 are arranged on the surface of the lead-out rod body 2, and a slot 16 for inserting the inserting strips 15 is opened on the insulating ring 4;

[0028] When the lead-out rod body 2 passes through the insulating ring 4 and is inserted into the interior of the outer tube 1, the insertion strip 15 will be inserted into and embedded in the slot 16. At this time, under the action of the insertion strip 15 and the slot 16, the relative rotation between the outer tube 1 and the lead-out rod body 2 can be limited, so that the lead-out rod body 2 can be more firmly installed in the outer tube 1 without rotation.

[0029] In another embodiment of the present utility model, the outer surface of the rotary cover 6 is provided with anti-slip grooves 17;

[0030] The anti-skid pattern 17 can increase the anti-skid property of the outer surface of the rotary cover 6 , making it easier for people to rotate the rotary cover 6 .

[0031] In another embodiment of the present utility model, the surfaces of the outer tube 1 and the lead-out rod body 2 are both provided with an anti-rust layer;

[0032] The anti-rust layer can effectively prevent the outer tube 1 and the lead-out rod body 2 from rusting under the influence of the external environment, thereby ensuring the service life.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. A lead-out rod for electric heating, comprising an outer tube (1), a lead-out rod body (2) and a resistance wire (3), characterized in that: The end of the outer tube (1) is provided with an insulating ring (4), the end of the lead rod body (2) passes through the insulating ring (4) and extends into the interior of the outer tube (1), a clamping ring (5) is provided on the surface of the lead rod body (2), a screw cap (6) is also nested on the lead rod body (2), one end of the resistance wire (3) is provided with a sleeve ring (7), the end of the lead rod body (2) extending into the interior of the outer tube (1) is provided with a connector (8) for the sleeve ring (7) to be inserted, two groups of arc-shaped clamping plates (9) acting on the sleeve ring (7) are installed on the lead rod body (2), and a plurality of groups of clamping claws (10) are provided inside the arc-shaped clamping plates (9); A threaded connection assembly is provided between the outer tube (1) and the rotary cover (6), and a mounting assembly is provided between the lead-out rod body (2) and the arc-shaped clamping plate (9).

2. The lead-out rod for electric heating according to claim 1, characterized in that: The threaded connection assembly comprises an external thread (11) arranged on the surface of the outer tube (1) and an internal thread (12) arranged on the inner surface of the screw cap (6).

3. The lead-out rod for electric heating according to claim 1, characterized in that: The mounting assembly comprises a screw hole (13) opened on the outer tube (1) and a mounting hole (14) arranged on the arc-shaped clamping plate (9) and matching with the screw hole (13).

4. The lead-out rod for electric heating according to claim 1, characterized in that: The surface of the lead-out rod body (2) is provided with a plurality of groups of inserting strips (15), and the insulating ring (4) is provided with slots (16) for inserting the inserting strips (15).

5. The lead-out rod for electric heating according to claim 1, characterized in that: The outer surface of the rotary cover (6) is provided with anti-slip grooves (17).

6. The lead-out rod for electric heating according to claim 1, characterized in that: The surfaces of the outer tube (1) and the lead-out rod body (2) are both provided with an anti-rust layer.

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