JPS5830519Y2 - electric kettle inner stopper - Google Patents

Description

[Detailed description of the invention] This invention relates to the inner plug of an electric pot for heating and keeping warm.The purpose of the invention is to provide an inner plug of an electric pot that has a simple structure, is easy to assemble, and does not leak air or steam. There is something to do.

Embodiments of the present invention will be described below with reference to the drawings.

An electric bottle (A) that boils water and keeps it warm includes an inner container 2 surrounded by an outer case 1, and a liquid level display device B that is interposed between the inner container and the outer case and displays the amount of liquid in the inner container. , a heat source 3 fixed to the outer wall of the lower end of the inner container to heat the liquid in the inner container, and a temperature regulator C to control the heat source by sensing the temperature of the liquid in the inner container.
, a bottom body 4 attached to the lower end of the outer case, a draining member 5 attached to the upper end of the outer case, an inner stopper 6 detachably attached to the central opening of the inner container, and a draining member attached to the upper end of the outer case so as to be openable and closable. , and an upper lid 8 having a built-in bellows pump 7.

The inner container 2 is formed into a bottomed cylindrical body made of a corrosion-resistant metal material such as stainless steel, and has through holes 9 for joints 15 of a liquid level display device B, which will be described later, in the upper and lower ends of the front side wall, respectively. An annular flange 10 bent outward is provided at the end of the upper layer forming a large central opening, and a corrosion-resistant and heat-resistant annular packing 11 is stretched on the lower surface of the annular flange, and the outer wall of the bottom of the inner container is provided with an annular flange 10 bent outward. A locking portion 43 for tightening is provided.

The exterior case 1 has a bottom body 4 attached to its lower end, a drainage member 5 attached to its upper end, and a plug 19 fixed to its rear lower end.
A vertically long through hole is bored in the front side of the exterior case corresponding to the liquid level display tube 12 of the liquid level display device B to be described later, and a frame 20 covering the vertically long hole is fixed to the front surface of this vertically long hole. ing.

This frame body 20 is provided with a vertically long transparent window through which the vertically long liquid level display tube 12 can be seen through the vertically long transparent hole of the exterior case 1, and is provided with a water boiler and heat-retaining base lamps 22 and 23 on the lower end surface. A transparent glass or transparent resin plate is fitted into the transparent window.

The liquid level display device B is attached to a liquid level display tube 12 that is placed between the inner container 2 and the vertically long through hole of the outer case 1 to display the liquid level in the inner container, and to the lower end of the liquid level display tube. D
and a nut 1 that fixes this unit member from inside the inner container.
7, 17, an annular packing 16.16 stretched from the inside and outside of the inner container through each through hole of the inner container, and surrounding the outer periphery of the lower end of the liquid volume display tube and the upper end of the holder 44 facing this lower end. It includes a protective tube 45 and a holding fitting 46 that prevents the liquid level display tube from shaking.

The liquid volume display tube 12 is formed of a transparent pipe made of glass, acrylic resin, etc., and the holder 44 attached to the lower end of the liquid volume display tube is a stainless steel pipe bent into an L shape.

A protective tube 4 connecting this liquid level display tube 12 and a holder 44
5 is formed in a hollow shape from silicone rubber, etc., and has a small diameter part smaller than the inner diameter of the liquid volume display tube and holder in the center of the interior, and the lower end of the liquid volume display tube and the holder are sandwiched between this small diameter part. Pressure is applied to the lower end.

The outer periphery of the protective tube 45 is provided with a locking annular groove for locking a holding fitting to be described later.

Unit 1 has one end attached to the holder.
4, and a joint 15 whose one end is attached to this unit and whose other end protrudes into the inner container from a through hole of the inner container, and this unit 14 is formed in a hollow shape from silicone rubber or the like. , one end is attached to the outer periphery of the holder.

The joint 15 is formed in a hollow shape from stainless steel or the like, has a threaded part on the outer periphery of the tip, has a flange part on the outer periphery at the rear end of the threaded part, and inserts this threaded part through the through hole of the inner container 2. It projects inside the container and is inserted into the unit 14 so that the outer periphery of the rear end of the flange is in contact with the flange.

The nut 17 is made of a corrosion-resistant material such as stainless steel, and is screwed into the threaded portion of the joint 15 that protrudes inside the inner container.

The annular packing 16 is formed into a donut shape from a material such as silicone rubber, and sandwiches the through-hole circumferential wall of the inner container from the inside and outside in a sandwich manner.

One end of the holding fitting 46 is attached to the outer wall of the lower end of the inner container, and the other end is attached to the outer periphery of the protective tube 45.

A heat source 3 for heating the liquid in the inner container is fixed to the outer periphery of the lower end of the inner container, and is controlled by a thermostat C1 and a temperature controller C of a thermal reed switch C2.

This heat source 3 includes a water heater and heat-retaining lamps 22 at the lower end of the frame.
23, and the lamp for boiling water is turned on when boiling water, and the lamp for keeping warm is turned on when keeping it warm.

The plug 19 is connected via lead wires to the heat-retaining lamps 22 and 23, the temperature fuse 42, the thermal reed switch C2, the thermostat C1, and the heat source 3.

The drainage member 5 attached to the upper end of the outer case has a large opening at the center, fixes the annular flange 10 of the inner container 2 to its circumferential surface, and is provided with an annular rib 24 to which the inner stopper 6 can be detachably attached.
A beak portion 26 on which the discharge pipe 25 of the inner stopper is placed is provided on the front surface, and a hinge portion on which the upper lid 8 is attached so as to be openable and closable is provided on the rear end outer wall.

This beak has an opening at its tip that allows the discharge port of the discharge pipe 25 to protrude to the front of the exterior case, and locking claws 28 on both sides of the center of the beak that engage the locking claws 30 of the locking device ff129 of the top cover.
has been established.

The bottom body 4 is provided with an inner container holding member 50 inside.

This holding member 50 has an upper or U-shaped longitudinal section, and its upper surface abuts against the tightening locking portion 43 of the inner container and is screwed in with a screw, and its lower surface abuts against the inner wall of the bottom. It is screwed onto the outer wall of the body with screws.

By tightening the screws on the outer wall of the bottom body, the inner container 2 is pushed down and at the same time, the draining member at the upper end of the outer case and the bottom body at the lower end are fixed to the outer case, and the annular collar 10 of the inner container is connected to the annular rib 24 of the draining member. The annular rib portion 10 and the annular rib 24 are in close contact with each other to prevent liquid leakage between the annular collar portion 10 and the annular rib 24.

The inner stopper 6, which is detachably attached to the central opening of the inner container, has an inner lid 32 that opens and closes the large central opening of the inner container, a lower plate member 31 with a water pump 34, and an upper plate member with a discharge pipe 25. It consists of 33.

This upper plate member 33 includes an upper plate outer cylinder communicating with the exhaust port of the bellows pump 7 in the upper cover, an upper plate inner cylinder communicating with the pumping pipe 34, an upper plate inner cylinder communicating with the discharge pipe 25, an upper plate annular flange on the outer periphery of the lower end of the upper plate outer cylinder, and this upper plate outer cylinder communicating with the exhaust port of the bellows pump 7. A plurality of rivets hanging down from the bottom surface of the flange are integrally molded.

The lower plate member 31 is in contact with a lower plate outer cylinder that fits on the outer periphery of the lower end of the upper plate outer cylinder, a lower plate inner cylinder that fits on the lower end outer periphery of the upper plate inner cylinder, and a lower surface of the upper plate annular flange. The lower plate annular flange with multiple through holes corresponding to multiple rivets and the lifting pipe cylinder body that fits the rear end of the lifting pipe at the lower end of the lower plate inner cylinder are integrally molded, and the upper plate outer cylinder A plurality of exhaust holes communicating with the cavity between the lower plate outer cylinder and the lower plate inner cylinder are bored between the lower plate outer cylinder and the lower plate inner cylinder.

The lift pipe 34 is made of a corrosion-resistant material such as stainless steel, and its tip hangs down into the lower part of the inner vessel, and its rear end fits into the lift pipe body of the lower plate member, and is inserted into the inner cylinder of the lower plate and the upper plate. It communicates with the tube.

The discharge pipe 25 is made of a heat-resistant and corrosion-resistant material such as stainless steel or resin, and has a discharge port at the tip protruding to the front of the outer case, and a rear end fitted to the outer circumference of the inner cylinder of the upper plate. It also communicates with the pumping pipe via the inner cylinder of the lower plate.

The inner lid 32 is made of a heat-resistant and corrosion-resistant material such as stainless steel and is formed into an annular shape with a central opening, and a plurality of through holes are bored in the annular peripheral surface corresponding to the plurality of rivets of the upper plate member 33. The annular outer periphery is bent into a hook shape, and an annular packing 35 for the inner lid is stretched over the annular end.

As shown in FIG. 2, this annular packing 35 for the inner lid has an annular flange 10 that forms a central opening having a large diameter of the inner container.
A vertical part 51 that contacts the vertical wall of the container and a horizontal part 52 that contacts the upper surface of the annular flange of the inner container at the upper end of the vertical part are integrally molded, and the outer periphery of the inner lid is fitted inside the upper part of the horizontal part 52. An annular groove 53 is provided, and the longitudinal section is approximately hook-shaped.

The upper lid 8, which is attached to the upper end of the draining member 5 so as to be openable and closable, is fixed to the bellows pump 7 which opens at the center of the upper and lower ends, a lower plate 36 to which the center of the lower end of the bellows pump is attached via a packing, and the rear end of the draining member. a locking device 29 for the top lid including a hinge device 27 for opening and closing the top lid, a locking pawl 30 for locking to a locking pawl on the draining member, a lid body 37, and a bushing valve 38 locked to the opening at the center of the upper end of the bellows; A spring 39 that pushes up the bushing valve from within the bellows, and a pusher body that is freely movable up and down within the center opening of the lid body and contacts the upper end of the bushing valve to supply air in the bellows to the inner container through the inner stopper. 40
and a stopper device 41 that restricts the vertical movement of this pushing body.

FIG. 3 shows another embodiment of the present invention, with an annular packing 35.
An annular inclined rib 52' is vertically provided on the lower surface of the horizontal portion 52 of the inner container, and this inclined rib 52' is brought into contact with the upper surface of the annular flange 10 of the inner container.

As described above, in the present invention, a vertical part and a horizontal part are integrally molded to provide an annular packing for the inner lid which is approximately hook-shaped in longitudinal section, and an annular groove for the inner lid is provided inside the upper part of the horizontal part. The structure of the annular packing is extremely simple because the outer periphery of the inner lid of the inner plug, which is made up of an upper plate member, a lower plate member, and an inner lid, is fitted into the annular groove for the inner lid of the annular packing. Furthermore, assembly is extremely easy.

Furthermore, although the shape of the inner lid and the shape of the central opening of the inner container are simple, they can be reliably sealed and completely prevent leakage of air and steam.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view of an electric kettle according to an embodiment of the present invention, Fig. 2 is an exploded longitudinal sectional view showing the main parts of the invention, and Fig. 3 is a partial longitudinal sectional view showing another embodiment of the invention. It is. A...Electric pot, 1...Outer case, 2...Inner container, 3...Heat source, 5...
...Draining member, 6...Inner stopper, 7...
・Bellows pump, 8...Top lid, 25...
...Discharge pipe, 31...Lower plate member, 32...
...Inner lid, 33...Top plate member, 34...
・Lifting pipe, 35... Annular packing, 51...
...Vertical part, 52...Horizontal part, 53...
...Annular groove.

Claims (1)

[Scope of utility model registration request] A bottomed inner container surrounded by an outer case, a heat source that heats and maintains the temperature of the liquid in this inner container, a drainage member attached to the upper end of the outer case, and a detachable member attached to the center opening of this inner container. In an electric pot that is equipped with an inner stopper and a top lid with a built-in bellows pump attached to the upper end of the outer case so as to be openable and closable, the liquid in the inner container is discharged to the outside of the pot body through the inner stopper by pressure from the bellows pump. The stopper consists of an inner lid that opens and closes the central opening of the inner container, a lower plate member equipped with a lift pipe, and an upper plate member equipped with a discharge pipe communicating with the lift pipe. A vertical part that contacts the vertical wall forming the central opening and a horizontal part that contacts the top wall forming the central opening of the inner container are integrally molded, and the outer periphery of the inner lid is fitted inside the upper part of the horizontal part. An inner stopper for an electric kettle characterized by having an annular packing provided with a groove and having a substantially hook-shaped longitudinal section.