CN209845333U - Heating wire leading-out connecting structure of electric heater - Google Patents

Abstract

The utility model discloses a connection structure is drawn forth to electric heater's heater, include that the heater on the electric heater body draws forth the end to and the external circuit connects, draw forth the end and divide into two sections that link to each other, one section is the heater section, and one section is pure conducting segment, the external circuit connects including pipe box, wire, binding post is for playing the tongue structure in the pipe box, binding post's stiff end with wire intercommunication is fixed, binding post's bullet pressure end is acted on and inserts in the pipe box pure conducting segment makes pure conducting segment with the pipe box inner wall is to closing. The utility model has the advantages that: the original heating wire leading-out connection structure of the electric heater is completely changed, the direct connection, plugging and pulling-out connection of the external circuit connector and the leading-out end is realized, complex structures and machining procedures such as riveting are not needed, and the heating degree of the connection part is obviously reduced.

Description

Heating wire leading-out connecting structure of electric heater

Technical Field

The utility model relates to an electric heater, especially electric heater's heater wire draws forth connection structure.

Background

Referring to fig. 1 and 2, a heating wire 1-1 of an electric heater is generally formed by printing a mixed paste 1-3 (conductive paste such as silver paste, conductive paste such as carbon paste) on a substrate 1-2 to have good electrical and thermal conductivity. When the leading-out end of the heating wire is electrically connected, in order to meet the connection requirements of insulation, fixation, electric conduction and the like, the heating wire is electrically conducted with the conductive insertion sheet 2-2 extending out of the external circuit connector 2-1, the heating wire and the conductive insertion sheet are riveted and fixed with the body 4-1 of the electric heater through the rivet 3-1, and then the riveted part and the part extending out of the conductive insertion sheet on the external circuit connector are sealed and insulated by glue 5-1, so that the leading-out connection of the heating wire is formed. Therefore, the heating wire leading-out connection structure has the advantages of multiple processing procedures, low efficiency and high processing cost, and the high temperature of the heating wire also has influence on the connection part.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: to the above problem, the utility model aims at providing an electric heater draws forth connection structure improves machining efficiency, realizes that the heater draws forth end and external circuit directly link.

The technical scheme is as follows: the utility model provides a connection structure is drawn forth to electric heater's heater, includes that the heater on the electric heater body draws forth the end to and external circuit connects, draw forth the end and divide into two sections that link to each other, one section is the heater section, and one section is pure conducting segment, external circuit connects and includes pipe box, wire, binding post is for playing the tongue structure in the pipe box, binding post's stiff end with the wire intercommunication is fixed, binding post's bullet is pressed the end and is acted on and insert in the pipe box pure conducting segment makes pure conducting segment with pipe box inner wall supports and closes.

Furthermore, a step groove for inserting and positioning the pure conductive section is formed in the inner wall of the pipe sleeve, the elastic pressing end faces the step groove, the pure conductive section and the inner wall of the pipe sleeve are conveniently positioned, and the pure conductive section and the elastic pressing end are accurately connected.

Further, the pure conductive segment comprises a base material and conductive paste printed on the base material, and the elastic end acts on the conductive paste.

Furthermore, the leading-out end is provided with a coating film besides the action parts of the pure conducting segment and the wiring terminal, so that unnecessary exposed parts are protected and prevented from being oxidized.

Furthermore, the heating wire section and the pure conductive section are partially overlapped at the connecting part, so that the reliable electric conduction contact of the heating wire section and the pure conductive section is further ensured.

Further, the base material and the covering film are PET films.

Has the advantages that: compared with the prior art, the utility model has the advantages that: the original heating wire leading-out connection structure of the electric heater is completely changed, the direct connection, plugging and pulling-out connection of the external circuit connector and the leading-out end is realized, complex structures and machining procedures such as riveting are not needed, and the heating degree of the connection part is obviously reduced.

Drawings

FIG. 1 is a schematic diagram of a heater leading-out connection structure in the prior art;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic view of the leading-out connection structure of the heating wire of the present invention;

fig. 4 is a sectional view B-B of fig. 3.

Detailed Description

The invention will be further elucidated with reference to the drawings and the specific embodiments. These examples are provided only for illustrating the present invention and are not intended to limit the scope of the present invention.

A heating wire leading-out connection structure of an electric heater is disclosed, as shown in figures 3 and 4, a heating wire 4 on an electric heater body 3 is provided with a leading-out terminal 1 connected with an external circuit connector 2. The leading-out terminal 1 is divided into two connected sections, one section is a heating wire section 11, the other section is a pure conductive section 12, the heating wire section heats at high temperature and conducts electricity, the pure conductive section mainly conducts electricity only, and the connection part of the heating wire section and the pure conductive section forms electric conduction.

The external circuit connector 2 comprises a pipe sleeve 21, a wire 22 and a wiring terminal 23, the wiring terminal 23 is positioned in the pipe sleeve 21, the wiring terminal 23 is of a spring tongue structure, one end of the wiring terminal is a fixed end 231, the other end of the wiring terminal is a spring pressing end 232, the wire 22 is inserted into the pipe sleeve 21 and is communicated with and fixed to the fixed end 231, a step groove 24 is formed in the inner wall of the pipe sleeve 21, the spring pressing end 232 faces the step groove 24, when the external circuit connector 2 is plugged with the pure conducting section 12, the pure conducting section 12 is inserted into the pipe sleeve 21 along the step groove 24, the spring pressing end 232 presses against the pure conducting section 12 by means of elasticity of the spring pressing end to form electric conduction, the electric conduction is abutted and positioned with the inner wall of the pipe sleeve 21, when the external circuit connector 2 is pulled and separated from the pure conducting section 12, the pure conducting section 12 and the spring pressing end 232 are released from.

The pure conducting segment 12 can be made together when printing the heating wire, and shares the base material 121 with the heating wire, the pure conducting segment 12 only prints the conducting paste 122 on the base material 121, the elastic end 232 is pressed against the conducting paste 122 to form electric conduction, the conducting paste 122 can adopt silver paste, or the pure conducting segment is made by spraying/covering tin or spraying/covering copper on the surface of the heating wire, so as to improve the electric conductivity, and can ensure reliable electric conduction contact with the connecting terminal and the heating wire segment, and can also ensure reliable electric conduction contact between the heating wire segment and the pure conducting segment by partially overlapping the connecting part and the pure conducting segment.

The leading-out terminal 1 is provided with a coating 13 besides the action parts of the pure conducting segment 12 and the connecting terminal 23, and the unnecessary exposed parts are protected to prevent oxidation. Both the base material 121 and the cover film 13 may be PET films.

The utility model discloses changed the original heater of electric heater completely and drawn forth connection structure, realized that external circuit connects and draws forth the end and directly link the plug and be connected, need not complicated structure and manufacturing procedure such as riveting, connect the position degree of generating heat and show the reduction.

Claims (7)

1. The utility model provides a connection structure is drawn forth to electric heater's heater, includes that the heater on the electric heater body draws forth end (1) to and external circuit connects (2), its characterized in that: draw forth end (1) and divide into two sections that link to each other, one section is heater section (11), and one section is pure conducting segment (12), external circuit connects (2) including pipe box (21), wire (22), binding post (23) are the bullet tongue structure in pipe box (21), stiff end (231) of binding post (23) with wire (22) intercommunication is fixed, the end (232) of suppressing of binding post (23) are acted on and are inserted in pipe box (21) pure conducting segment (12), make pure conducting segment (12) with pipe box (21) inner wall is closed.

2. A heater filament lead-out connection structure of an electric heater according to claim 1, wherein: the inner wall of the pipe sleeve (21) is provided with a step groove (24) for the pure conductive section (12) to be inserted and positioned, and the elastic pressing end (232) faces the step groove (24).

3. A heater filament lead-out connection structure of an electric heater according to claim 1, wherein: the pure conductive segment (12) comprises a base material (121) and conductive paste (122) printed on the base material (121), and the elastic end (232) acts on the conductive paste (122).

4. A heater filament lead-out connection structure of an electric heater according to claim 1, wherein: the leading-out end (1) is provided with a coating (13) besides the action parts of the pure conductive segment (12) and the wiring terminal (23).

5. A heater filament lead-out connection structure of an electric heater according to claim 1, wherein: the heating wire section (11) is partially overlapped with the pure conductive section (12) at the connection position.

6. A heater filament lead-out connection structure of an electric heater according to claim 3, wherein: the base material (121) is a PET film.

7. A heater filament leading-out connection structure of an electric heater according to claim 4, wherein: the covering film (13) is a PET film.