Patent Application
20120228332
1. Field of invention
The present invention relates to a foam output device easy to produce foam, more particularly to a foam output device having simple element constitution, easy assembly and low manufacturing cost.
2. Brief Description of Prior Art
Referring to Japanese Patent Gazette Hei 7-215353 entitled “Foam Dispensing Container”, it comprises a cap nozzle, a cap main body, a valve diaphragm, a filter net, a retaining ring and a straw sleeve. When in assembly, the filter net and the retaining ring are pre-assembled into the straw sleeve, then the valve diaphragm and the straw sleeve pre-assembled with the filter net and the retaining ring are set into the cap main body. In turn, the cap nozzle and the cap main body are assembled together, and then a straw is inserted into the bottom of the straw sleeve. Configuring in this manner, when the bottle body is squeezed to push air flowing from the cap main body to the bottle body through the valve diaphragm, the air entering the bottle body is mixed with the solution inside, and then foam is dispensing out after the mixed solution is filtered by the filter net. However, it is apparent from the assembly procedure of the above foam dispensing container that the foam dispensing container is composed of a plurality of components. Hence, the assembly is time-consuming. In addition, part of the components is very tiny so that they are easy to drop down or to get lost during assembly. Not only big trouble is encountered in assembly process but also the loss of components means the increase of production cost. Moreover, in order to supply the plural components so as to keep up with the pace of production, more die sets have to be created to make the required quantities of components. These factors cause manufacturing cost staying in high and hence industrial competitiveness in low condition. Furthermore, as the components are very tiny, requirement on the assembly should be more precise, hence dislocation of each component and thus damage is more likely to happen. This will make the foam dispensing container fails to spit out foam smoothly.
This invention relates to a foam output device easy to produce foam, the main object is to provide a foam output device having simple element constitution, easy assembly and low manufacturing cost.
In order to achieve the above objects, the inventor of the present invention hereby presents the novel foam output device described as below. The foam output device easy to produce foam is composed of a nozzle seat, a one-way air intake valve, a nozzle and a filter. When conducting assembly, the filter is firstly set into housing aperture of the nozzle seat. In turn, through hole of the one-way air intake valve is engaged with sleeve of the nozzle seat, then the nozzle is assembled on the nozzle seat in such a manner that a clamping pieces of the nozzle clamp the coupling tabs on the nozzle seat, and that a hook on the clamping piece is in hooking engagement with a hook on the coupling tabs so as to fix together. The assembly of the present invention is thus completed in simple manner. In this way, a foam output device having simple element constitution, easy assembly and low manufacturing cost is thus provided.
The objects, the technical contents and the expected effectiveness of the present invention will become more apparent from the detailed description of the preferred embodiments in conjunction with the accompanying drawings.
Firstly referring to
The nozzle seat (1) has a joint part (11), which can be an inner thread segment, and an assembly part (12) extended from the joint part (11). A partition plate (13) is provided within the assembly part (12) to separate the same into an upper chamber (14) and a lower chamber (15). A plurality of air vent (131) is provided on the partition plate (13) and a sleeve (16) is protruded from the center of the partition plate (13), a housing aperture (161) being formed at the center of the sleeve (16). Further, the sleeve (16) is extended upwardly to form a shrunken close end (162), and several perforations (163) are provided on the close end (162) so as to communicate with the housing aperture (161). Coupling tabs (17) are formed to extend upwardly from the partition plate (13), which have hook portions (171) provided at the outside of their upper edges.
The one-way air intake valve (2) has a through hole (21) provided at the center thereof for engagement with the sleeve (16) of the nozzle seat (1) and the one-way air intake valve (2) is located in the lower chamber (15) of the nozzle seat (1). Stop portions (211), (164) for positioning purpose are respectively provided on the peripheral walls of the through hole (21) of the one-way air intake valve (2) and the sleeve (16) mutually engaged therewith. A planar shape elastic diaphragm (22) formed on the one-way air intake valve (2) is parallelly abutted against the bottom edge of the lower chamber (15). A plurality of holding piece (23) in flat and straight shape formed in mutually spaced manner for encircling and securely holding a straw is extended from the bottom of the one-way air intake valve (2), and gaps (24) are formed between the holding pieces (23) for communicating with the filter (4) housed within the sleeve (16).
The nozzle (3) is mounted over the nozzle seat (1) in such a manner that the outer wall (31) of the nozzle (3) is encircling the outside of the assembly part (12) of the nozzle seat (1), an air intake clearance (311) being formed between the outer wall (31) of the nozzle (3) and the assembly part (12) of the nozzle seat (1). Clamping pieces (32) are formed at the inside of the nozzle (3) for clamping the coupling tabs (17) of the nozzle seat (1). One of the clamping pieces (32) has a hook part (321) provided at the inside of its bottom edge for hooking engagement with the hook portions (171) provided on the coupling tabs (17) of the nozzle seat (1). A hollow buffer zone (33) opposite to the perforations (163) provided at the close end of the sleeve (16) is formed in the interior of the nozzle (3), and the hollow buffer zone (33) is communicated with the nozzle outlet (34) within which a filter net is provided.
The filter (4) is assembled in the housing aperture (161) provided on the sleeve (16) of the nozzle seat (1), which has a filter main body (41) and a filter net (42) to be integrally formed on the upper end of the filter main body (41) by injection molding.
Configuring like this, when conducting assembly as shown in
When in usage and implementation, as shown in
When users apply force to press the bottle body, the pressure within the bottle body changes so that the air preserved within the bottle body is squeezed upwardly to flow to the filter (4) housed in the sleeve (16) through the gaps (24) formed between the holding pieces (23) of the one-way air intake valve (2).
In turn, the bottle body is continuously pressed to change the pressure inside, simultaneously the liquid contained therein is sucked by the straw to flow along the straw upwardly to the filter (4) housed in the sleeve (16). At this moment, the liquid flowed out from the straw is mixed with the air flowed into the filter (4) and is squeezed continuously by the air so as to be squeezed out toward the direction of the filter net (42) provided on the upper end of the filter (4). After the liquid mixed with air is squeezed out through the fine filter net (42), it is formed into foam and is squeezed out toward the direction of the buffer zone (33) of the nozzle (3) through the perforations (163) provided on the upper edge of the sleeve (16). For the time being, the foam squeezed out of the filter net (42) stops in the buffer zone (33) so as to stabilize its foam structure.
Next, the foam located in the buffer zone (33) is again squeezed by the air so as to be sprayed outwardly from the nozzle outlet (34) communicated with the buffer zone (33). Before the foam is sprayed out from the nozzle outlet (34), it is squeezed through another filter net provided in the nozzle outlet (34) so as to make the foam become more delicate and expanded after sprayed out from the nozzle outlet (34).
Referring to
Configuring in this manner, quick assembly effect can be obtained by simple component design of the present invention having the nozzle seat (1), the one-way air intake valve (2), the nozzle (3) and the filter (4), and the volume of each component is formed to be grasped easily by users for assembly purpose, therefore, loss of components can be avoided in assembly. Moreover, as the component of the present invention is designed to be very simple, only four die sets are needed to produce the components required for assembly. Hence, manufacturing cost can be remarkably reduced so as to raise its industrial competitiveness.
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