TWI599718B - An air pump with large and small pumps - Google Patents

Description

Large and small pump integrated hand pump

The invention relates to the field of pumping, and in particular to a large and small pump integrated hand pump.

As we all know, inflators have been widely used in people's daily life to inflate appliances such as bicycle tires, motorcycle tires, balls, etc., to bring convenience to people. When the existing gas cylinder inflates the inflatable product, the inflatable product is initially in a dry state. At this time, the large pump is used to inflate faster and the resistance is small. When the inflated item is almost charged, when the large pump is inflated, the internal pressure of the inflated item is very high, which causes the large pump to have a large inflation resistance and is not easy to be charged. At this time, the small pump is inflated, the small pump has a small intake flow rate, and the resistance is small. It is a little easier to inflate. Therefore, it is necessary to design a large pump and a small pump integrated into one, and switch as needed to improve the convenience of inflation.

The main object of the present invention is to provide an integrated pump with a large and small pump. By integrating a large pump and a small pump, the switching mechanism is used to switch between the large pump and the small pump, and the user can operate the air pump according to the inflation demand. Make choices to improve the convenience of inflation.

In order to achieve the foregoing objects, the present invention provides a large and small pump integrated hand pump including a body, an outer cylinder, an inner cylinder, a handle, a gas pipe, and a switching mechanism.

The bottom of the body has a seat, and a top cover is mounted on the top, and a first circular hole and a first air inlet hole are disposed on the top cover.

The outer cylinder is vertically movably mounted in the body, the upper end of the outer cylinder passes through the first circular hole, and a concave cavity, a second air inlet hole and a second circular hole are arranged at the top of the outer cylinder. One side of the cavity is provided with a first notch, and the other side has an opening, and a first air cavity is formed between the outer wall of the outer tube and the inner wall of the body, the first air inlet and the first air The cavity is in communication, and a piston matching the inner wall of the body is disposed at the bottom of the outer cylinder.

The inner cylinder is vertically movably mounted in the outer cylinder, the top end of the inner cylinder passes through the second circular hole, and a second air cavity is formed between the outer wall of the inner cylinder and the inner wall of the outer cylinder, the second The air inlet is in communication with the second air chamber, and a piston matching the inner wall of the outer cylinder and a one-way air valve are disposed at a lower end of the inner cylinder.

The lower end of the handle is mounted on the top end of the inner cylinder, and an air outlet and a holding groove are disposed on the handle.

The air pipe is connected to the air outlet.

The switching mechanism is configured to switch a size pump, the switching mechanism includes a slider and a gland, the slider is slidably mounted to the cavity in the top of the outer cylinder, and a third portion is disposed in the middle of the slider a circular hole, the handle passes through the third circular hole, the holding groove on the handle matches the side wall of the third circular hole, and a handheld portion is respectively disposed at two ends of the slider, the handheld portion is from the above a first notch and an opening are protruded, the gland is mounted on the top end of the outer cylinder, and is disposed on the outside of the cavity, and a fourth circular hole is disposed in a middle portion of the gland, and the handle passes through the fourth circle a second gap is formed in the first notch and the opening corresponding to the concave cavity on the two sides of the pressure cover, the slider is located below the pressure cover, and the hand-held portions at the two ends of the slider are respectively from the The two notches protrude.

Preferably, the slider comprises a substrate and the hand-held portion extending obliquely outward from the two sides of the substrate, and arc-shaped bumps are respectively disposed on two sides of the substrate, the outer tube a sliding slot is formed in the top cavity of the slider, and the sliding slot and the opening are matched with the substrate, and two arcs connected to each other are respectively disposed on the two sidewalls of the sliding slot. a groove that matches the arcuate bump, the arcuate bump being alternately located in the two arcuate groove.

Preferably, a second limiting cylinder is disposed in the sliding slot, and two arc-shaped sliding slots are disposed on the substrate of the slider corresponding to the two limiting cylinders, and the two limiting cylinders are respectively inserted into the two curved shapes. In the chute.

Preferably, one end of the base plate of the slider is provided with an extension plate outwardly, and an upper portion of the top cover is provided with an annular inner edge, and the extension plate of the slider slidably abuts below the annular inner edge.

Preferably, the second air inlet hole is disposed in the sliding slot of the outer cylinder, and includes a plurality of strip-shaped grooves and a plurality of notches disposed around the second circular hole.

Preferably, the first air inlet holes are plural, and the plurality of first air inlet holes are circumferentially disposed on the upper portion of the top cover.

Preferably, the bottom of the gland is provided with a plurality of connecting columns connected to the top end of the outer tube, and an arc limit for limiting the longitudinal and lateral directions of the slider is disposed between the adjacent two connecting columns. a plate, the arc limiting plate is located in front of the hand-held portion of the slider, above the substrate of the slider; and a limiting plate is disposed upwardly on the handheld portions on both sides of the slider, the limiting plate blocking On the outside of the gland.

Preferably, the one-way air valve includes a vent hole disposed at a bottom of the inner cylinder and a floating plate that can float the vent hole.

Preferably, the piston of the lower end of the outer cylinder and the piston of the lower end of the inner cylinder respectively comprise an annular groove and a sealing ring disposed in the annular groove, and the unidirectional gas at the lower end of the inner cylinder The valve is positioned higher than the piston of the lower end of the inner cylinder.

Preferably, the outer wall of the gland is provided with a plurality of recesses for hand-held.

Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be known from the above technical solution that the large pump and the small pump are integrated by using the switching mechanism, and the large pump and the small pump are switched by using the switching mechanism. The operation mode of the air pump can be selected according to the inflation requirement, and the switching mechanism has a simple structure and convenient assembly. When the operation is performed, only the position of the slider can be adjusted to realize switching between the large pump and the small pump, and the switching mode is adopted. Fast and efficient.

10‧‧‧ Ontology

11‧‧‧Support

12‧‧‧Top cover

121‧‧‧First round hole

122‧‧‧First air intake

123‧‧‧ring inner edge

20‧‧‧Outer tube

21‧‧‧ cavity

211‧‧‧ first gap

212‧‧‧ openings

213‧‧ ‧ chute

2131‧‧‧ curved groove

2132‧‧‧Limited cylinder

22‧‧‧Second air intake

221‧‧‧ strip slots

222‧‧ ‧ gap

23‧‧‧Second round hole

30‧‧‧Inner tube

31‧‧‧One-way air valve

311‧‧‧Ventinel

312‧‧‧ floating board

40‧‧‧Hands

41‧‧‧ Vents

42‧‧‧ card slot

50‧‧‧ trachea

60‧‧‧Switching mechanism

61‧‧‧ Slider

611‧‧‧Substrate

612‧‧‧Handheld Department

613‧‧‧ curved bumps

614‧‧‧Arc chute

615‧‧‧ third round hole

616‧‧‧ Extension board

617‧‧‧Limited board

62‧‧‧Gland

621‧‧‧fourth round hole

622‧‧‧ second gap

623‧‧‧Connecting column

624‧‧‧Arc limit plate

625‧‧‧ recess

617‧‧‧Limited board

70‧‧‧First air cavity

80‧‧‧Second air cavity

90‧‧‧Piston

91‧‧‧ annular groove

92‧‧‧ sealing ring

Figure 1 is a perspective view of the air pump of the present invention.

Figure 2 is an exploded perspective view of the air pump of the present invention.

Fig. 3 is a schematic view showing the operation of the air flow when the small pump of the present invention is in operation.

Fig. 4 is a schematic view showing the operation of the air flow when the large pump of the present invention is in operation.

Figure 5 is a perspective view of the slider of the present invention in cooperation with the outer cylinder.

Figure 6 is a schematic view showing the structure of the top of the outer cylinder of the present invention.

Figure 7 is a perspective view of the slider of the present invention.

Figure 8 is a perspective view of the gland of the present invention.

The embodiments of the present invention will be described in more detail below with reference to the drawings and the <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt;

1 to 8, a size pump integrated hand pump includes a body 10, an outer cylinder 20, an inner cylinder 30, a handle 40, a gas pipe 50, and a switch for switching the size pump. Agency 60, where:

The bottom of the body 10 has a seat 11 and a top cover 12 is mounted on the top. A first circular hole 121 and a plurality of first air inlet holes 122 are defined in the top cover 12, and the plurality of first air inlet holes 122 are surrounded. It is disposed on the upper portion of the top cover 12; and an annular inner edge 123 is disposed on the upper portion of the top cover 12.

The outer cylinder 20 is mounted in the body 10 so as to be movable up and down. The upper end of the outer cylinder 20 passes through the first circular hole 121. At the top of the outer cylinder 20, a cavity 21, a second air inlet 22 and a second are disposed. The first hole 211 is disposed on one side of the cavity 21, and the first side of the cavity 21 is provided with a slot 212. The slot 21 is disposed in the cavity 21, and the second air inlet 22 is disposed in the slot 213. The method includes a plurality of strip-shaped grooves 221 and a plurality of notches 222 disposed around the second circular holes 23; a first air chamber 70 is formed between the outer wall of the outer tube 20 and the inner wall of the body 10, the first The air hole 122 is in communication with the first air chamber 70, and a piston 90 matching the inner wall of the body 10 is disposed at the bottom of the outer tube 20.

The inner cylinder 30 is mounted in the outer cylinder 20 so as to be movable up and down. The top end of the inner cylinder 30 passes through the second circular hole 23, and a second air chamber 80 is formed between the outer wall of the inner cylinder 30 and the inner wall of the outer cylinder 20. The second air inlet 22 is in communication with the second air chamber 80. The lower end of the inner cylinder 30 is provided with a piston 90 matching the inner wall of the outer cylinder 20 and a one-way air valve 31 for the inner cylinder 30. The piston 90 at the lower end and the piston 90 at the bottom of the outer cylinder 20 respectively include an annular groove 91 and a sealing ring 92 disposed in the annular groove 91. The one-way air valve 31 includes a bottom portion of the inner cylinder 30. A vent hole 311 and a floating plate 312 that floatably shields the vent hole 311, and the one-way air valve 31 at the lower end of the inner tube 30 is positioned higher than the piston 90 at the lower end of the inner tube 30.

The lower end of the handle 40 is mounted on the top end of the inner cylinder 30. An air outlet 41 and a retaining groove 42 are disposed on the handle 40.

The air tube 50 is connected to the air outlet 41.

The switching mechanism 60 includes a slider 61 and a gland 62. The slider 61 is slidably mounted to the top of the outer cylinder 20 in a sliding slot 213. The slider 61 includes a substrate 611 and the substrate 611. a hand-held portion 612 extending obliquely outwardly on both sides, the substrate 611 and the sliding slot 213 and the chute The opening 212 of one side of the 213 is matched, the substrate 611 can slide in the sliding slot 213, and one end thereof can protrude from the outside of the outer tube 20 through the opening 212; an arcuate protrusion is respectively disposed on two sides of the substrate 611. 613, two arcuate grooves 2131 are formed on the two side walls of the sliding slot 213, and the arcuate grooves 2131 are matched with the curved bumps 613. The curved bumps 613 are alternately located in the two curved recesses. In the slot 2131, a second limiting cylinder 2132 is disposed in the sliding slot 213, and a two-arc sliding slot 614 is disposed on the base plate 611 of the slider 61 corresponding to the second limiting cylinder 2132, and the two limiting cylinders 2132 are respectively inserted. In the two-arc chute 614, the sliding of the sliding rod 61 is restricted by the cooperation of the limiting cylinder 2132 and the curved sliding groove 614, so that the sliding is more stable; the middle portion of the sliding rod 61 is provided with a third a circular hole 615, the handle 40 passes through the third circular hole 615, and the holding groove 42 of the handle 40 matches the sidewall of the third circular hole 615; the base plate 611 of the slider 61 is provided with an extension plate at one end 616, the extension plate 616 slidably abuts below the annular inner edge 123 of the top cover 12.

The two hand-held portions 612 extend out of the first notch 211 and the opening 212 of the top of the outer tube 20, and a limiting plate 617 is disposed upwardly on the two hand-held portions 612.

The pressure cover 62 is mounted on the top end of the outer cylinder 20 and is disposed on the outer portion of the cavity 21. A fourth circular hole 621 is disposed in the middle of the pressure cover 62. The handle 40 passes through the fourth circular hole 621. A second notch 622 is disposed on the two sides of the cover 62 corresponding to the first notch 211 and the opening 212 of the cavity 21, and the slider 61 is located below the gland 62, and the hand-held portions 612 of the two ends of the slider 61 are respectively Two notches 622 are extended; a plurality of connecting posts 623 connected to the top end of the outer cylinder 20 are disposed at the bottom of the pressing cover 62, and longitudinal and lateral limits for the slider 61 are disposed between the adjacent two connecting posts 623. An arc-shaped limiting plate 624 is located in front of the hand-held portion of the slider 61 and above the substrate 611 of the slider 61; the limiting plate 617 on the hand-held portion 612 of the slider 61 is blocked The outer side of the cover 62; and a plurality of recesses 625 for holding the hand are disposed around the outer wall of the cover 62.

The working principle of the air pump is as follows: when a small pump is used, the slider 61 is slid to the left, so that the inner wall of the third circular hole 615 on the slider 61 is disengaged from the holding groove 42 on the handle 40, and the inner cylinder is driven by the handle 40. 30 moves in the outer cylinder 20, the air enters the second air chamber 80 from the second intake hole 22 at the top of the outer cylinder 20, and the inner cylinder 30 is pressed down, and the airflow at the bottom of the piston 90 of the inner cylinder 30 is unidirectional. The air valve 31, the airflow passes through the one-way air valve 31 and the inner cylinder 30, and flows out through the air outlet 50 through the air outlet 41 on the handle 40; When a large pump is used, the slider 61 is slid to the right (when the slider 61 slides to the right or left, the curved limiting plate 624 at the bottom of the pressing cover 62 can prevent the slider 61 from sliding out a predetermined distance, and is set to slide The two arcuate grooves 2131 connected in the groove 213 cooperate with the arcuate protrusions 613 on the slider 61 to prevent the slider 61 from being displaced after being slid into position, and the inside of the third circular hole 615 on the slider 61 The wall is embedded in the retaining groove 42 of the handle 40. Since the gland 62 is fixed to the top of the outer cylinder 20 through the connecting post 623, the slider 61 is located between the top of the outer cylinder 20 and the gland 62. When the handle 40 drives the slider 61 to move, the outer cylinder 20 and the inner cylinder 30 will move accordingly, and the airflow enters the first air chamber 70 from the first air inlet hole 122 on the top cover 12, along with the outer cylinder 20 and the inner cylinder The depression of 30, the airflow below the piston 90 of the outer cylinder 20 and the piston 90 of the inner cylinder 30 blew the one-way air valve 31 at the bottom of the inner cylinder 30, and flows out through the inner cylinder 30, the air outlet 41, and the air tube 50.

The design of the present invention is focused on that the large pump and the small pump are integrated into one body, and the large pump and the small pump are switched by the switching mechanism, and the user can select the working mode of the air pump according to the inflation requirement, and the switching mechanism structure It is simple and easy to assemble. When operating, it is only necessary to adjust the position of the slider to switch between the large pump and the small pump. The switching method is fast and the efficiency is high.

The above is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are Still falling within the scope of the technical solution of the present invention.

10‧‧‧ Ontology

11‧‧‧Support

12‧‧‧Top cover

122‧‧‧First air intake

123‧‧‧ring inner edge

20‧‧‧Outer tube

22‧‧‧Second air intake

30‧‧‧Inner tube

31‧‧‧One-way air valve

311‧‧‧Ventinel

312‧‧‧ floating board

40‧‧‧Hands

41‧‧‧ Vents

42‧‧‧ card slot

612‧‧‧Handheld Department

615‧‧‧ third round hole

616‧‧‧ Extension board

617‧‧‧Limited board

62‧‧‧Gland

70‧‧‧First air cavity

80‧‧‧Second air cavity

90‧‧‧Piston

91‧‧‧ annular groove

92‧‧‧ sealing ring

Claims (10)

The utility model relates to a large-sized pump integrated hand-held air pump, comprising: a body having a seat at the bottom, a top cover mounted on the top, a first round hole and a first air inlet hole being arranged on the top cover; and an outer tube The upper end of the outer cylinder passes through the first circular hole, and a concave cavity, a second air inlet hole and a second circular hole are arranged at the top of the outer cylinder, and the concave cavity a first gap is formed on one side, and an opening is formed on the other side. A first air chamber is formed between the outer wall of the outer tube and the inner wall of the body, and the first air inlet is connected to the first air chamber. a bottom of the outer cylinder is provided with a piston matching the inner wall of the body; an inner cylinder is vertically movably mounted in the outer cylinder, and a top end of the inner cylinder passes through the second circular hole, the inner cylinder A second air cavity is formed between the outer wall and the inner wall of the outer cylinder, the second air inlet is in communication with the second air cavity, and a lower end of the inner cylinder is provided with a matching inner wall of the outer cylinder a piston and a one-way air valve; a handle, a lower end is mounted on the top end of the inner cylinder, and an air outlet is arranged on the handle And a card holding slot; a gas pipe connected to the air outlet; and a switching mechanism for switching the size pump, the switching mechanism includes a slider and a pressing cover, the slider is slidably mounted to the outside a recessed cavity in the top of the cylinder, a third circular hole is disposed in a middle portion of the slider, the handle passes through the third circular hole, and the retaining groove on the handle matches the sidewall of the third circular hole, and Each of the two ends of the slider is provided with a hand-held portion extending from the first notch and the opening, and the gland is mounted on the top end of the outer tube. And a cover is disposed on the outside of the cavity, and a fourth circular hole is disposed in a middle portion of the pressure cover, and the handle passes through the fourth circular hole, and the first gap on the concave cavity is respectively corresponding to the two sides of the pressure cover And the opening is provided with a second notch, the slider is located below the gland, and the hand-held portions at both ends of the slider respectively protrude from the second notch. The pump-integrated hand-held air pump according to claim 1, wherein the slider comprises a substrate and the hand-held portion extending obliquely outward from the two sides of the substrate, respectively The side is respectively provided with an arc-shaped protrusion, and a cavity corresponding to the substrate of the slider is disposed in the cavity of the top of the outer cylinder, and the sliding slot and the opening are matched with the substrate, and the sliding slot is matched with the substrate. Two arcuate grooves are connected to each other on the two side walls, and the arcuate grooves are matched with the arcuate bumps, and the arcuate bumps are alternately located in the two arcuate grooves. The pump-integrated hand-held air pump according to claim 2, wherein the chute is provided with a two-restricted cylinder, and the two-restricted cylinder is provided with two arcs on the substrate of the slider. The chute, the two limiting cylinders are respectively inserted in the two arc chutes. The pump-integrated hand-held air pump of claim 2, wherein one end of the base plate of the slider is provided with an extension plate to the outside, and an upper portion of the top cover is provided with an annular inner edge, the slider The extension plate slidably abuts below the annular inner edge. The pump-integrated hand-held air pump of claim 2, wherein the second air inlet hole is disposed in a sliding slot of the outer cylinder, and includes a plurality of strip grooves and surrounding the second circle A plurality of notches set by the holes. The pump-integrated hand-held air pump of claim 2, wherein the first intake holes are plural, and the plurality of first intake holes are disposed around the upper portion of the top cover. The pump-integrated hand-held air pump according to claim 1, wherein the bottom of the gland is provided with a plurality of connecting columns connected to the top end of the outer tube, and is disposed between adjacent two connecting columns. There is an arc limiting plate for limiting the longitudinal and lateral direction of the slider, the arc limiting plate is located in front of the hand-held portion of the slider, above the substrate of the slider; A limiting plate is disposed upwardly on the hand-held portion, and the limiting plate is disposed outside the pressing cover. The pump-integrated hand-held air pump of claim 1, wherein the one-way air valve includes a vent hole disposed at a bottom of the inner cylinder and a floating plate that floatably shields the vent hole. The pump-integrated hand pump according to claim 1, wherein the piston of the lower end of the outer cylinder and the piston of the lower end of the inner cylinder respectively comprise an annular groove and are disposed in the annular groove. a sealing ring, and the one-way valve position of the lower end of the inner cylinder is higher than the piston of the lower end of the inner cylinder. The pump-integrated hand-held air pump according to claim 1, wherein the outer wall of the gland is provided with a plurality of recesses for hand-held.