CN205025739U - Gasbag structure of air pump - Google Patents

Abstract

The utility model discloses a gasbag structure of air pump, the last mounting hole that corresponds curved bar branch that forms of airbag seat, the pore wall downwardly extending of mounting hole forms the holding chamber, the apical margin of gasbag is taken and is put on the top of airbag seat's mounting hole along last, the foundation of gasbag is installed on the branch of curved bar, the hollow cask blister cavities of utricule upper segment is arranged in airbag seat's holding chamber, the extrusion entity of utricule hypomere is located the below in holding chamber, the bottom of hollow cask blister cavities is passed through the lead angle and is connected with the extrusion entity, in order to avoid wearing and tearing. The utility model discloses a can further improve product life, improve and to inflate efficiency.

Description

A kind of airbag structure of air pump

Technical field

The utility model relates to a kind of air pump, particularly the airbag structure of air pump, is applicable to the equipment such as waist support of car seat system or massage chair.

Background technique

In prior art, apply to the air pump of waist support of car seat system, be roughly made up of upper cover, valve seat, air bag seat, base, air bag, curved bar, live axle, eccentric wheel and motor.Motor is fixedly mounted on the below of base, setting-up eccentricity wheel in the rotating shaft of motor, eccentric wheel forms eccentric opening, the lower end of curved bar forms center hole, the two ends of live axle are connected in the lower center hole of eccentric eccentric opening and curved bar, and one end of live axle for be fixedly connected with and the other end for be flexibly connected, the upper end of curved bar is by the outside radiation formation in center one group of pole; Air bag seat is arranged on base, and on air bag seat, the pole of corresponding curved bar forms one group of mounting hole, airtight installation air bag in each mounting hole, and bottom air bag, correspondence is arranged on the pole of curved bar; Valve seat is airtight to be arranged on air bag seat, and upper cover is airtight to be arranged on valve seat, and between valve seat and upper cover, corresponding air bag forms center outlet passageway and outer ring gas-entered passageway; Inlet hole offered by valve seat corresponding each air bag in the gas-entered passageway of outer ring, and inlet hole installs breather cheek valve; Valve seat corresponding each air bag in the outlet passageway of center sets out pore, and air outlet hole is installed unidirectional gas outlet valve; Upper cover forms intake interface in the gas-entered passageway of outer ring, and upper cover forms interface of giving vent to anger in the outlet passageway of center.

Working principle is: starting electrical machinery band movable eccentric wheel rotates, and eccentric wheel is transmitted in live axle, and live axle drives the upper and lower circular swing motion of curved bar again, thus the volume of air bag is stretched; When the volume of air bag becomes large, unidirectional gas outlet valve cuts out corresponding air outlet hole, and breather cheek valve then opens inlet hole, and gas flows into the gas-entered passageway of outer ring from the intake interface of upper cover, and enter air bag by inlet hole and breather cheek valve, now air bag is bled; When the volume of air bag diminishes, air outlet hole opened by unidirectional gas outlet valve, and breather cheek valve then closes corresponding inlet hole, and gas is extruded away by air outlet hole and unidirectional gas outlet valve by air bag, and gas flows into center outlet passageway and pumps from the interface of giving vent to anger of upper cover.Along with the rotation of motor, the above-mentioned action of reciprocation cycle, realizes the function of pump.

In actual use, there is following defect in above-mentioned air pump:

Air bag has apical margin, utricule and foundation, apical margin is arranged in the mounting hole of air bag seat, foundation is arranged on the pole of curved bar, the epimere of utricule is hollow drum blister cavities and hypomere is extruding entity, when inflating, friction can be produced between the outer wall of hollow drum blister cavities and the inwall of air bag seat, therefore the wall thickness equidimension design of air bag is very important, if air bag wall thickness is too thin, easily damaged and affect working life, if air bag wall thickness is too thick, not only affect the elasticity of air bag, efficiency of inflating is low and processing cost is high.

In view of this, the present inventor have developed a kind of airbag structure of air pump specially, and inflate efficiency to improve, this case produces thus.

Model utility content

The purpose of this utility model is the airbag structure providing a kind of air pump, to improve life of product further, improves and inflates efficiency.

To achieve these goals, the technical solution of the utility model is as follows:

A kind of airbag structure of air pump, air bag seat is formed the mounting hole of corresponding curved bar pole, the hole wall of mounting hole extends to form holding cavity downwards, the apical margin of air bag is taken and is put on edge, the top of the mounting hole of air bag seat, the foundation of air bag is arranged on the pole of curved bar, and the hollow drum blister cavities of utricule epimere is arranged in the holding cavity of air bag seat, and the extruding entity of utricule hypomere is positioned at the below of holding cavity, the bottom of hollow drum blister cavities is connected with extruding entity by lead angle, to avoid wearing and tearing.

The chamber wall of the hollow drum blister cavities of described utricule epimere is made up of straight wall, lead angle R9.3 ± 0.1mm, lead angle R1.6 ± 0.1mm from top to bottom, the chamber wall thickness of hollow drum blister cavities is 0.35 ± 0.1mm, and the bottom of hollow drum blister cavities is connected by lead angle R0.3 ± 0.1mm with between the top of extruding entity.

The apical margin of described air bag connects together.

After adopting such scheme, the utility model compared with prior art, has the following advantages:

The hollow drum blister cavities of utricule epimere is arranged in the holding cavity of air bag seat; holding cavity can play the effect of protection utricule; lead angle is conducive to again utricule distortion and inflates, and the chamber wall thickness design of hollow drum blister cavities and lead angle R value optimal design, further increase the working life of product.

Below in conjunction with the drawings and specific embodiments, the utility model is described further.

Accompanying drawing explanation

Fig. 1 is the stereo decomposing plan view of the utility model air pump;

Fig. 2 is the assembled sectional view of the utility model air pump;

Fig. 3 is the schematic perspective view of the utility model air bag;

Fig. 4 is the sectional view of the utility model air bag.

Label declaration

Upper cover 1, intake interface 11, interface 12 of giving vent to anger, jump ring 13;

Valve seat 2, center outlet passageway 21, outer ring gas-entered passageway 22, inlet hole 23, air outlet hole 24;

Air bag 3, air bag seat 31, mounting hole 32, extruding entity 33, apical margin 34, foundation 35, hollow drum blister cavities 36;

Base 4;

Curved bar 5, center hole 51, pole 52;

Live axle 6;

Motor 7, eccentric wheel 71, rotating shaft 72, eccentric opening 73;

Breather cheek valve 8;

Unidirectional gas outlet valve 9.

Embodiment

As shown in Figures 1 to 4, be a kind of air pump that the utility model discloses, be made up of upper cover 1, valve seat 2, air bag seat 31, base 4, air bag 3, curved bar 5, live axle 6, eccentric wheel 71 and motor 7.

Wherein, the cooperation between air pump main member can be as described below, but be not limited only to following cooperation.

Motor 7 is fixedly mounted on the below of base 4, setting-up eccentricity wheel 71 in the rotating shaft 72 of motor 7, eccentric wheel 71 is formed eccentric opening 73, the lower end of curved bar 5 forms center hole 51, the two ends of live axle 6 are connected in eccentric opening 73 and bent center hole 51, and one end of live axle 6 for be fixedly connected with and the other end for be flexibly connected, there are four poles 52 upper end of curved bar 5 shown in the outside radiation formation in center one group of pole 52(figure).Air bag seat 31 is arranged on base 4, and on air bag seat 31, the pole 52 of corresponding curved bar 5 is formed shown in one group of mounting hole 32(figure four mounting holes 32), airtight installation air bag 3 in each mounting hole 32, bottom air bag 3, correspondence is arranged on the pole 51 of curved bar 5.Valve seat 2 is airtight to be arranged on air bag seat 31, and upper cover 1 is airtight to be arranged on valve seat 2, and between valve seat 2 and upper cover 1, corresponding air bag 3 forms center outlet passageway 21 and outer ring gas-entered passageway 22.Inlet hole 23 offered by valve seat 2 corresponding each air bag 3 in outer ring gas-entered passageway 22, and inlet hole 23 installs breather cheek valve 8.Valve seat 2 corresponding each air bag 3 in center outlet passageway 21 sets out pore 24, and air outlet hole 24 is installed unidirectional gas outlet valve 9.Upper cover 1 forms intake interface 11 in outer ring gas-entered passageway 22, and upper cover 1 forms interface 12 of giving vent to anger in center outlet passageway 21.Conveniently assembly and disassembly, upper cover 1 of the present utility model, valve seat 2, air bag seat 31 and base 4 are fixed by jump ring 13.

Working principle is: the rotating shaft 72 of starting electrical machinery 7 is with movable eccentric wheel 71 to rotate, and eccentric wheel 71 is transmitted in live axle 6, and live axle 6 drives curved bar about 5 circular swing motion again, the pole 51 push-and-pull air bag 3 of curved bar 5, thus the volume of air bag 3 is stretched.When the volume of air bag 3 becomes large, negative pressure (being less than ambient pressure) is produced in air bag 3, unidirectional gas outlet valve 9 cuts out corresponding air outlet hole 24 by ambient pressure effect, breather cheek valve 8 then opens inlet hole 23 by ambient pressure effect, gas flows into outer ring gas-entered passageway 22, by inlet hole 23 and breather cheek valve 8 from the intake interface 11 of upper cover 1 and enters air bag 3, and now air bag 3 is bled.When the volume of air bag 3 diminishes, malleation (being greater than ambient pressure) is produced in air bag 3, unidirectional gas outlet valve 9 opens air outlet hole 24 by air bag 3 internal air pressure effect, breather cheek valve 8 then closes corresponding inlet hole 23 by the effect of air bag 3 internal air pressure, gas is extruded away by air outlet hole 24 and unidirectional gas outlet valve 9 by air bag 3, and gas flows into center outlet passageway 21 and pumps from the interface 12 of giving vent to anger of upper cover 1.Along with the rotation of motor 1, the above-mentioned action of reciprocation cycle, realizes the function of inflating of pump.

Improvement of the present utility model is:

Mounting hole 32 hole wall of air bag seat 31 corresponding curved bar 5 pole 52 extends to form holding cavity downwards, and the apical margin 34 of air bag 3 is taken and put on edge, the top of the mounting hole 32 of air bag seat 31, and in order to simplify structure, ease of assembly, the apical margin 34 of all air bags 3 can connect together.The foundation 35 of air bag 3 is arranged on the pole 52 of curved bar 5, utricule epimere is the holding cavity that hollow drum blister cavities 36 is arranged in air bag seat 31, holding cavity can play the effect of protection utricule, the chamber wall thickness optimum value of hollow drum blister cavities 36 is 0.35mm, the chamber wall of hollow drum blister cavities 36 is from top to bottom by straight wall, lead angle R9.30mm, lead angle R1.65mm forms, utricule 3 hypomere is the below that extruding entity 33 is positioned at holding cavity, the bottom of hollow drum blister cavities 36 is connected with the top of extruding entity 33 by lead angle R0.30mm, multistage lead angle R structure is conducive to utricule distortion and inflates, wearing and tearing can be avoided, further increase the working life of product.After testing, the utility model zero load to air bag 3 during load 40kPa and around all without rubbing, like this, just can ensure can not produce friction within the scope of normal operating load, thus realize the long-life of air pump.

Above-described embodiment and graphic and non-limiting product form of the present utility model and style, any person of an ordinary skill in the technical field, to its suitable change done or modification, all should be considered as not departing from patent category of the present utility model.

Claims (3)

1. the airbag structure of an air pump, it is characterized in that: mounting hole air bag seat being formed corresponding curved bar pole, the hole wall of mounting hole extends to form holding cavity downwards, the apical margin of air bag is taken and is put on edge, the top of the mounting hole of air bag seat, the foundation of air bag is arranged on the pole of curved bar, the hollow drum blister cavities of utricule epimere is arranged in the holding cavity of air bag seat, and the extruding entity of utricule hypomere is positioned at the below of holding cavity, and the bottom of hollow drum blister cavities is connected with extruding entity by lead angle.

2. the airbag structure of a kind of air pump as claimed in claim 1, it is characterized in that: the chamber wall of the hollow drum blister cavities of described utricule epimere is made up of straight wall, lead angle R9.3 ± 0.1mm, lead angle R1.6 ± 0.1mm from top to bottom, the chamber wall thickness of hollow drum blister cavities is 0.35 ± 0.1mm, and the bottom of hollow drum blister cavities is connected by lead angle R0.3 ± 0.1mm with between the top of extruding entity.

3. the airbag structure of a kind of air pump as claimed in claim 1, is characterized in that: the apical margin of described air bag connects together.