CN201027617Y

CN201027617Y - Inflator with gear driving piston

Info

Publication number: CN201027617Y
Application number: CNU2006200996009U
Authority: CN
Inventors: 麦晓明
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-25
Filing date: 2006-10-25
Publication date: 2008-02-27
Anticipated expiration: 2016-10-25

Abstract

A gear drive piston type inflator is formed by a metal shell, a bull gear, a pinion, connecting rods and pistons, an air cylinder, a tee junction box and a charging port which are connected in turn, wherein, the bull gear is provided with a treadle as the force fulcrum to drive the gear to rotate; the two sets of connecting rods and pistons are respectively arranged at both sides of the pinion; moreover, the installing points at both sides are of one radius away from the axes of the pinion and are symmetrical with the axes as the symmetric origin. When the utility model is used, a user can step on the treadle to push the inflator for air inflating, thereby saving labor and obtaining great inflating volume within one cycle. The utility model mainly solves the problem of difficult inflating of inflatable products (such as air dome, inflatable kayak and air sofa) during self-driving tour in 'October 1st' and 'May 1st' golden weeks and mainly aims to realize a do-it-yourself inflating mode without power supply.

Description

Gear driven piston type inflator pump

Affiliated technical field:

The utility model relates to the inflator that a kind of gear driven piston comes and goes, and especially relates to the laborsaving and once round big inflator pump of aeration quantity of a kind of energy.

Background technique:

Known, the structure of inflator pump is to adorn a piston in the metallic cylinder, and a puck is installed on piston, between it and the metal cylinder space is arranged.When user's both hands press down piston, underpiston quantitative gas smaller volume, pressure increases, and the rubber dish is close to barrel can not spill gas, and the valve inside that bigger pressure is washed tire open enters tire.When carrying on the piston, the gas volume of piston bottom increases, and pressure reduces, and the outer air of tube enters piston bottom along the slit around the rubber dish, so back and forth movement.But, because frictional force is excessive, just use relatively effort when general inflator pump uses, and once come and go the aeration quantity deficiency, run into when needing the bigger inflation object of the more pressure of tolerance, obviously feel unable to do what one wishes.

Summary of the invention:

In order to overcome the shortcoming that existing inflator pump aeration quantity is not enough and extremely require great effort when using, the utility model provides a kind of inflator pump, not only the aeration quantity that once comes and goes of gear driven piston is big for this inflator pump, and use foot-operated form to promote, do not need power supply, very environmental protection is laborsaving, and carries also very convenient.

The technological scheme that its technical problem that solves the utility model adopts is:

In metal shell, gearwheel, small gear, connecting rod and piston, inflator, threeway box, inflation inlet mechanical connection, connecting rod and piston have two covers, be installed in the both sides on the small gear respectively, mounting points is the round dot point symmetry with the axle center with the distance at a distance of the radius in small gear axle center, and it is foot-operated that bicycle type is installed on the wheel shaft of gearwheel.When needs are inflated, on user's both feet place and ride, pedal the foot-operated gearwheel that promptly promotes and rotate, thereby drive pinion rotation, because the gearwheel radius is a small gear N ValueSo the gearwheel small gear that turns around turns over The N circleSmall gear drivening rod and piston back-and-forth movement, piston end is installed puck, since the connecting rod mounting points on small gear with at a distance of how much symmetries of small gear diameter, so a piston is toward another piston return of journey while, gas enters the threeway box, three mouthfuls are the product word arrangement in the box, be inflation inlet flatly, two mouthfuls are communicated with two inflators respectively in addition, one-way exhaust valve is all arranged on three mouthfuls, guarantee that the outer gas of inflation inlet can not flow backwards and a piston during toward journey gas can not arrange in the inflator at another return piston place into, compress into object by inflation inlet at last.

The beneficial effects of the utility model are:

Can be more laborsaving when exporting than atm number than existing inflator pump, and simple in structure compared with electric gas-filled instrument, the environmental protection practicality, easy to carry, particularly can solve the self-service inflation problem under no electric energy situation.

Description of drawings:

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is a mechanical schematic diagram of the present utility model.

Fig. 2 is first embodiment's of gear driven piston type inflator pump vertical section structure figure

Fig. 3 is the A-A sectional view of Fig. 2

Fig. 4 is second embodiment's of gear driven piston type inflator pump a partial sectional view

1. gearwheels among the figure, 2 small gears, 3. connecting rod A, 4. piston A, 5. connecting rod B, 6. piston B, 7. puck, 8. inflator, 9. threeway box, 10. inflation inlet, 11. bicycle types are foot-operated, 12. metal shells.13. one-way exhaust valve

Embodiment:

In Fig. 1, gearwheel (1), small gear (2), connecting rod are connected with piston (3-6), inflator (8), threeway box (9), inflation inlet (10) sequential machine.Be generally and guarantee that gearwheel (1) rotates a circle and can make piston (4,6) that coming and going more than once arranged, and consider the relation of piston (4,6) motion one way distance and aeration quantity, gearwheel (1) radius is preferably 2 times of small gear (2) radius.Connecting rod (3, the 5) mounting points of small gear (2) both sides is the round dot point symmetry with the axle center with the distance at a distance of the radius in axle center, to guarantee that a piston is toward another piston return of journey while constantly.

In embodiment illustrated in fig. 2, gearwheel (1) rotates, and drives small gear (2) rotation and makes connecting rod (3,5) promotion piston (4,6) do the straight line back and forth movement in inflator (8), and gas is pressed into threeway box (9) and is advanced to inflate in the object by inflation inlet (10) row at last.

In the embodiment shown in fig. 4, on external force is applied to foot-operated (11), promoting gearwheel (1) rotates, driving small gear (2) rotates, make connecting rod A (3) the promotion piston A (4) of a side in inflator (8), do the motion of straight line return, the one-way exhaust valve of Lian Tonging (13) closes with it, make connecting rod B (5) the promotion piston B (6) of opposite side in inflator (8), do straight line simultaneously toward Cheng Yundong, the one-way exhaust valve of Lian Tonging (13) is opened with it, air is compressed into threeway box (9), pressure is greater than inflation object pressure in the box, and the one-way exhaust valve (13) of inflation inlet (10) is opened, and gas is pressed in the inflation object.

Claims

1. gear driven piston type inflator pump, in metal shell, gearwheel, small gear, connecting rod and piston, inflator, threeway box, inflation inlet are linked in sequence, it is characterized in that: foot-operated being installed on the gearwheel wheel shaft, the large gear turn the small gear rotates, thereby drive 2 pistons and do back and forth movement, piston end is installed puck.

2. gear driven piston type inflator pump according to claim 1 is characterized in that: the foot-operated rotation promotes the gearwheel rotation, and gearwheel and small gear constitute gear drive.

3. gear driven piston type inflator pump according to claim 1 is characterized in that: connecting rod and piston constitute transmission system, and totally 2 covers are contained in the small gear both sides respectively, and mounting points is the round dot point symmetry with the axle center with the distance at a distance of the radius in small gear axle center.

4. gear driven piston type inflator pump according to claim 1 is characterized in that: two metal inflators are placed side by side and be communicated with the threeway box, arrange with Pin Zixing for 3 mouthfuls in the threeway box, and each mouth all is equipped with one-way exhaust valve.