CN201290183Y - Connection structure for thermal fuse in electrothermal pipe - Google Patents

Abstract

The utility model provides a heat fuse connecting structure used in an electric heating pipe, relates to a pipe heating technology field, and especially relates to a heating element with a built-in heat fuse structure. The utility model resolves problem of easy breakage of the heat fuse in the heating element, and the technical scheme is that: the connection structure comprises an internal leadout bar, an external leadout bar and a heat fuse, and is characterize in that: a stretch-proof structure member is provided between the heat fuse and one end of the internal leadout bar or the external leadout bar. The beneficial effects of the connecting structure of the utility model are that: the stretch-proof structure added on the heat fuse assembly prevents the lead wire from being broken or pulled off in industrial process, breakage of heat fuse can be avoided under epigene action when transport or use, the reliability of the heating element can be ensured; and a step fixed on an external bulkhead prevents sleeve pipe and bulkhead from being pulled off, and ensures electric property.

Description

Thermal cut-off syndeton in the electrothermal tube

Technical field

The utility model relates to the heating tube technical field, the electrothermal tube aspect of dress thermal cut-off structure in referring more particularly to.

Background technology

(1) thermal cut-off of dress in the existing electrothermal tube, damage down when external force reaches the stressed effect of himself safety, electrothermal tube lost efficacy, and this external force has from producing in the calendering technology process, subsequent transportation collision, the client uses when China and foreign countries' eduction rod pressurized or draws and produce destructive power to thermal cut-off.(2) the outer sleeve pipe of thermal cut-off is subjected to the extension of outer tube easily to produce the displacement of internal plug in calendering and pulls, and causes electric property bad.

Summary of the invention

In sum, the utility model is at thermal cut-off syndeton in the electrothermal tube of the protection proposition stretch-proof effect of thermal cut-off.

For implementing the technical solution adopted in the utility model be: comprising: interior eduction rod, outer eduction rod and thermal cut-off are provided with the structure member of stretch-proof effect between one end of described thermal cut-off and interior eduction rod or outer eduction rod.

Be respectively equipped with plug on the described inside and outside eduction rod.

Sleeve pipe is equipped with in the outside of described two plugs and thermal cut-off.

Be the slip socket join structure between described sleeve pipe and plug.

The structure member of described stretch-proof effect is the shaped form lead.

Described plug is provided with step, in case sleeve pipe and plug pull, sleeve pipe can slide in the plug step and not come off, and has guaranteed electric property.

The beneficial effect of the utility model design is: (one) is because the thermal cut-off assembly has increased the structure member of stretch-proof effect, guarantee that lead-in wire is not broken or pulled in the technical process, follow-up transportation and use in the middle of eduction rod be subjected to be unlikely under the external force effect to produce damage to thermal cut-off, guarantee the reliability of electrothermal tube.(2) because outer plug is provided with step, solve the problem that pulls of calendering technology process middle sleeve, guaranteed the electric property of electrothermal tube.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of the 1st kind of embodiment of structural design parts of stretch-proof effect;

Fig. 3 is the structural representation of the 2nd kind of embodiment of structural design parts of stretch-proof effect;

Fig. 4 is the structural representation of the 3rd kind of embodiment of structural design parts of stretch-proof effect.

Embodiment

Below in conjunction with the drawings and specific embodiments being further described to the utility model structural design.

Shown in Fig. 1, one end of the thermal cut-off 3 in the outer tube 7 of electrothermal tube and 2 riveted joints of interior eduction rod, the other end is by the structural design parts 5 and outer eduction rod 1 riveted joint of a stretch-proof effect, be with inside and outside plug 41,42 on the inside and outside eduction rod 1,2 respectively, outer plug 41 is provided with recessed step 411, between inside and outside plug 41,42, be provided with sleeve pipe 6, sleeve pipe 6 overlaps outside on the plug step 411 and interior plug, 41,42 of sleeve pipe 6 and two plugs are the slip socket join structure, sleeve pipe 6 slidably and not can come off, and guarantees electric property.

The structure member of stretch-proof effect is one and does the time spent being subjected to certain external force that the plain conductor that can be stretched is shaped as the curve shown in Fig. 2 or 3 or 4.

Claims (5)

1, thermal cut-off syndeton in the electrothermal tube, comprising: interior eduction rod, outer eduction rod and thermal cut-off is characterized in that: the structure member that is provided with the stretch-proof effect between the end of described thermal cut-off and interior eduction rod or outer eduction rod.

2, thermal cut-off syndeton in the electrothermal tube according to claim 1 is characterized in that: be respectively equipped with plug on the described inside and outside eduction rod.

3, thermal cut-off syndeton in the electrothermal tube according to claim 2 is characterized in that: be set with sleeve pipe between described two plugs.

4, thermal cut-off syndeton in the electrothermal tube according to claim 3 is characterized in that: be the slip socket join structure between described sleeve pipe and plug.

5, thermal cut-off syndeton in the electrothermal tube according to claim 1, the structure member that it is characterized in that the stretch-proof effect is the shaped form lead.

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