JPS637003Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a lid structure for an air pot.

In recent years, various types of air pots have appeared, and the pump device, which can be called the heart of the air pot, has a different shape depending on the type of air pot. However, if the pump device is changed in response to the diversification of air pots, the mold design must be redone each time, which not only increases manufacturing costs but also complicates parts inventory management. Another drawback is that it complicates assembly work.

The present invention was devised in view of these conventional drawbacks, and it is possible to unitize the pump device part housed inside the lid of the air pot so that one type of pump device part can be used in common even if the form of the air pot is different. An object of the present invention is to provide a lid structure for an air pot that allows for

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings, which are examples thereof.

Fig. 1 shows a first embodiment of the present invention, in which 1 is a metal exterior body constituting the air pot body, 2 is a medium bottle housed inside the exterior body, and 3 is placed and fixed on the upper end of the exterior body. Resin shoulder body, 4 is an inner stopper fitted above the mouth of the inner bottle, 5 is a handle, 6 is a water pipe provided in the handle, 7 is a water filler pipe cover that covers the water filler pipe 4a of the inner stopper. , 8 is a handle cover that covers the water pipe.

Reference numeral 10 denotes a lid body attached to the upper end of the shoulder body 3, and this lid body 10 is roughly composed of a pump frame body 11 housing a pump device portion and a lid body cover 23. As shown in FIGS. 2 to 4, the pump frame 11 is integrally molded from synthetic resin into a substantially cylindrical shape, and has a cylindrical portion 12 formed in the upper portion thereof to guide the pusher body 19 in a vertically movable manner. Bellows pump 20 at the bottom
A pump chamber 13 is formed to accommodate the pump. Four regulating ribs 14 for regulating the upward movement of the stopper plate 21 are vertically provided on the inner upper surface of the pump chamber 13, and four longitudinal ribs 14 for guiding the lower end of the pusher 19 are provided in the center of the inner circumferential surface. A guide rib 15 is provided to protrude, and four fitting pawls 16 that are fitted to the lower plate 22 of the bellows pump 20 are provided to protrude from the lower end of the inner peripheral surface. On the other hand, on the outer peripheral surface of the pump chamber 13, a hook-shaped engagement recess 17 is formed in the upper part, as shown in FIG. 4, and a male thread 18 is formed in the lower part.

On the other hand, as shown in FIGS. 5 and 6, the lid cover 23 is integrally molded into a substantially cylindrical shape so that the upper end protrudes inward, and has four arcuate projections on the lower surface of the upper end. A strip 24 is provided vertically, and four engagement protrusions 25 that engage with the hook-shaped engagement recesses 17 of the pump frame 11 are protruded from the inner peripheral surface.

Note that 26 is a cap, 27 is a return spring, and 28 is a seal rubber.

A method of assembling the air pot lid 10 having the above structure will be explained. First, the pusher body 19, the stopper plate 21, and the lower plate 22 integrated with the bellows pump 20 are inserted through the lower end opening of the pump frame 11, and the peripheral edge of the lower plate 22 is inserted into the fitting claw 16 of the pump frame 11. By fitting into the pump frame 11, the pump device parts are housed and held together in the pump frame 11, and are made into a unit. Next, when the lid cover 23 is fitted onto the outer periphery of the pump frame 11 from above, the engagement protrusion 25 of the lid cover 23 is inserted through the opening 17a of the hook-shaped engagement recess 17 of the pump frame 11. By rotating the lid cover 23 in the clockwise direction, the engagement protrusion 25 engages with the non-return claw 17b on the inner surface of the engagement recess 17 and is prevented from coming off, and the upper end of the pump frame 11 fits into the inner periphery of the arcuate protrusion 24 of the lid cover 23 and is joined without any gaps. In this way, the pump frame 11 and the lid cover 23 are integrated, and the upper surface of the lid cover 23 and the upper surface of the pusher body 19 become the same surface.

In the lid 10 assembled as described above, the male screw 18 of the pump frame 11 protruding downward from the lid cover 23 is replaced by a female screw 3 formed on the inner surface of the upper end of the shoulder body 3.
Complete the air pot by screwing on a.

To explain the operation of the air pot with the above configuration, first, when the pusher 19 is pressed, the stopper plate 2
1, the bellows pump 20 is compressed, air is sent into the medium bottle 2 through the seal rubber 28 and the inner stopper 4, and the liquid in the medium bottle 2 is pumped through the pumping pipe 4b and the inner stopper 4 by the air pressure. , is poured out to the outside via the water injection pipe 4a and the water guide pipe 6. In addition, since the stopper plate 21 has a cross-sectional shape, the bellows pump 20 is not compressed more than necessary even when the pusher 19 is pressed to the lowest end, and the bellows pump 2
There is no need to worry about damaging the 0.

FIG. 7 shows another embodiment of the present invention, and shows the first embodiment of the invention.
A push body 19 and a stopper plate 21 having the same shape as in the embodiment,
A pump frame 11 housing and holding a bellows pump 20 and a lower plate 22 is attached with a lid cover 30 having a different height l. 33 in Figure 7
is a resin exterior body integrally provided with a shoulder body, and a standing wall 34 is protruded from the upper end of this exterior body, and this standing wall 34 covers the lower outer periphery of the pump frame 11, and A pump frame 11 is provided on the inner peripheral surface.
A female thread 35 is formed to be screwed into the male thread 18 of. Further, a recess 36 is integrally formed in the front part of the exterior body 33, and a water injection pipe 37a of the inner stopper 37 faces the recess 36, and the upper part of the water guide pipe 38 corresponds to the lower part of the water injection pipe 37a. is inserted into the recess 36. The water guide pipe 38 is attached to the exterior body 33 by engaging attachment claws 38a integrally provided on the inner surface thereof with attachment holes 33a of the exterior body 33. The above-mentioned recess 3 is provided in the front part of the exterior body 33.
A spout cover 39 is provided to cover the spout 6 and water pipe 38, and the upper end of the spout cover 39 is locked to the upper edge of the vertical wall 34 of the exterior body 33 to prevent it from coming off. 40 is a handle whose both ends are pivotally connected to the exterior body 33.

In both of the above embodiments, the lid covers 23, 30
If the positions of the arcuate protrusions 24, 31, which are the joining points with the upper end of the pump frame 11, and the engagement protrusions 25, 32, which engage with the hook-shaped engagement recesses 17, are constant, the outer shape Even if the shape, color, dimensions, etc. change, it can be reliably attached to the outer periphery of the pump frame 11. Therefore, even if the external shape of the air pot changes with the diversification of air pots, parts such as the pump frame body 11, bellows pump 20, pusher body 19, etc., which are pump device parts, can be used in common.

As is clear from the above explanation, according to the present invention, even if the external shape of the lid of the air pot changes,
Since parts such as the pump frame, the bellows pump, and the push body that constitute the pump device can be used in common, molds can be shared, and manufacturing costs can be significantly reduced. In addition, since all pump device parts are housed and held within the pump frame, the pump device can be made into a unit, making it easy to assemble the air pot into the lid, and to manage inventory of parts. Furthermore, since the return position regulating part of the bellows pump, the guide part of the pusher body, etc. can all be integrally molded into the pump frame, the internal shape of the lid cover can be simplified, eliminating the need for complicated molding on the lid cover. The resin molding sink on the outer surface of the lid cover, which frequently occurred in conventional products, can be eliminated, and even if there is a resin molding sink on the pump frame, the pump frame is not exposed to the outside, so there is no risk of poor appearance.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional side view of the air pot according to the present invention, Fig. 2 is a bottom view of the pump frame, Fig. 3 is a sectional view taken along the - line in Fig. 2, and Fig. 4 is a directional arrow in Fig. 3. View, Figure 5 is a bottom view of the lid cover, Figure 6
The figure is a sectional view taken along the line -- in FIG. 5, and FIG. 7 is a partially sectional side view of another embodiment of the air pot according to the present invention. 1...Exterior body, 2...Medium bottle, 10...Lid body, 1
DESCRIPTION OF SYMBOLS 1... Pump frame body, 12... Cylinder part, 13... Pump chamber, 17... Engagement recessed part, 19... Push body, 20...
...Bellows pump, 23,30...Lid cover,
25, 32...Engaging protrusion.

Claims (1)

[Scope of utility model registration request] In the lid structure of the air pot, which is attached to the upper end of the air pot body containing the medium bottle and has a built-in bellows pump that sends air into the medium bottle, the lid has a pusher built into the upper part, and the pusher A cylindrical part that guides the vertical movement of the air pot body, and a pump chamber that fits with the peripheral edge of the lower plate of the bellows pump to accommodate the bellows pump on the inner surface of the lower part, and a pump chamber that fits the peripheral edge of the lower plate of the bellows pump on its outer surface, and a pump chamber on the inner surface of the upper end of the air pot body. A substantially cylindrical pump frame body each having a male thread that is screwed into the formed female thread; and a lid cover that covers the outer peripheral surface of the pump frame body and whose lower end can be connected to the upper end of the air pot body when the lid is closed. The lid cover is fitted onto the outer periphery of the pump frame from above, the upper end of the lid cover and the upper end of the pump frame are joined, and the inner periphery of the lid cover is fitted onto the outer periphery of the pump frame. A lid structure for an air pot characterized by being engaged and fixed to the portion.