CN2181881Y - Expanding plug for thermos-bottle - Google Patents

Abstract

The utility model relates to an expanding plug for thermos bottles, comprising a bottle plug cap, an inner ring, a working body, a fixed ring, a pin, an expanding rubber sleeve and heat preserving filling materials. The utility model has the advantage of favorable heat insulating property. The utility model can prevent water from flowing out from the opening of a thermos bottle when the internal and external temperature difference of the thermos bottle is large and can achieve the purpose of leakage prevention when the thermos bottle is inclined.

Description

Expanding plug for thermos-bottle

The utility model relates to a kind of plug for vacuum bottle that expands.

Existing plug for vacuum bottle be by one with wood or foamed plastics make bullet outside the bread gauze form, its shortcoming is that heat-insulating property is poor, goes out from bottleneck easily when the vacuum flask internal-external temperature difference is big, overflows easily when vacuum flask tilts.

The purpose of this utility model is to overcome above-mentioned weak point of the prior art and a kind of expansion plug for vacuum bottle is provided, and it can improve heat-insulating property, and anti-sealing overflows.

Realize that technical solution of the present utility model is: design a kind of expansion plug for vacuum bottle, it comprises bottle stopper cap, interior ring, working body, retainer ring, pin, expansion gum cover and insulation packing material, being connected between bottle stopper cap and the interior ring with the tight interlock of interior external splines, in be equipped with internal thread, the middle and upper part of working body be provided with external screw thread and with the screw-internal thread fit of interior ring, retainer ring and pin are used for making working body not rotate when work, control collapsing of expansion gum cover thereby by the revolving bottle cock cap working body is moved up and down when work.

The utility model has the advantages that: the heat-insulating property of this bottle stopper is good, can prevent that when the vacuum flask internal-external temperature difference is big it from going out from bottleneck, also can reach the purpose of leakproof when vacuum flask tilts.

Accompanying drawing is the embodiment of the utility model expansion plug for vacuum bottle.

Fig. 1 is the main pseudosection of expansion plug for vacuum bottle.

Fig. 2 is the internal organs pseudosection of expansion plug for vacuum bottle.

Below in conjunction with accompanying drawing essential characteristics of the present utility model is described in further detail.

Should form by seven parts by the expansion plug for vacuum bottle among the figure, 1---the bottle stopper cap, 2---interior ring, 3---working body, 4---retainer ring, 5---pin, 6---the expansion gum cover, 7---the insulation packing material, being connected with the tight interlock of interior external splines between bottle stopper cap 1 and the interior ring 2, interior ring 2 is provided with internal thread, the middle and upper part of working body 3 be provided with external screw thread and with the screw-internal thread fit of interior ring 2, retainer ring 4 and pin 5 are used for making working body 3 not rotate when work, control collapsing of expansion gum cover 6 thereby by revolving bottle cock cap 1 working body 3 is moved up and down when work.The diameter of bottle stopper cap 1 is greater than bottleneck diameter, and expansion gum cover 6 diameters are slightly less than bottleneck diameter.After bottle stopper is filled in bottleneck, cone by expansion gum cover 6 tops is pressed the bottleneck upper inside wall and bottle stopper is fixed, clockwise rotate bottle stopper cap 1 then, by screw thread working body is risen, when working body rose, cylindrical inclined-plane, its underpart pushes away to be justified the inclined-plane and outwards expands gum cover the bottom in, the inwall that presses the bottleneck bottom, through compressing bottleneck twice up and down, bottle stopper has increased contact area and has compressed degree, thereby has reached leakproof and improved heat preservation effect.When need were transferred to bottle stopper, inhour is rotated bottle stopper cap 1 descended working body, and the gum cover of expansion sets back by the elasticity of rubber self.Through heat insulation test, the water that uses the vacuum flask of bottle stopper of the prior art to fill 97 ℃ is 65 ℃ through the water temperature after 24 hours, and same vacuum flask to use the expansion plug for vacuum bottle be 72 ℃ filling 97 ℃ the water water temperature after through 24 hours, and can reach the effect of leakproof erosion control.

Claims (1)

1, a kind of expansion plug for vacuum bottle, it is characterized in that: it comprises bottle stopper cap 1, interior ring 2, working body 3, retainer ring 4, pin 5, expansion gum cover 6 and insulation packing material 7, being connected between bottle stopper cap 1 and the interior ring 2 with the tight interlock of interior external splines, interior ring 2 is provided with internal thread, the middle and upper part of working body 3 be provided with external screw thread and with the screw-internal thread fit of interior ring 2, retainer ring 4 and pin 5 are used for making working body 3 not rotate when work, control collapsing of expansion gum cover 6 thereby by revolving bottle cock cap 1 working body 3 is moved up and down when work.

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