TWI628357B - A pump that can choose between quick air pumping or high pressure pumping - Google Patents

Abstract

The invention relates to an air pump which can select quick airing or high pressure airing, and comprises: a base, a through hole is arranged in the center, an air inlet hole and a air leakage hole are arranged on both sides of the through hole; and an outer cylinder is fixed at one end In the base; an end kit is disposed at the other end of the outer cylinder, a punch is disposed in the center of the end sleeve; an inner cylinder is disposed in the through hole of the end sleeve and a part of the cylinder body is received in the outer cylinder a sleeve disposed coaxially with the outer cylinder; a grip fixed to the exposed end of the inner cylinder; an air guide tube fixed at one end to the central perforation of the base, and coaxially received in the inner cylinder; a cylinder piston is fixed at the other end of the air pipe and is accommodated in the inner cylinder; an outer cylinder piston is fixed at an inner end of the inner cylinder and is received in the outer cylinder, and a hole is provided in the center for the The air guiding tube is disposed; the check valve is disposed in the air inlet hole of the base, so that the gas in the outer cylinder can only flow into the base in one direction and cannot flow backward; a vent valve is disposed at a venting hole of the pedestal; a control member for controlling opening and closing of the venting valve; an air guiding passage, connecting Center of the base of the inlet hole perforations; an air nozzle, connected to the bleed air passage.

Description

A pump that can be selected for quick air or high pressure pumping

The present invention relates to an inflator, and more particularly to an inflator that can be selected for rapid or high pressure pumping.

It is known that there are internal and external double cylinders, which can choose the rapid inflation of the two cylinders at the same time, or the high pressure inflation pump with only one cylinder operation. Most of them are equipped with a bleed valve on the outer cylinder (large cylinder bore) or the air passage of the outer cylinder. Such a structure is often caused by the pressure of the venting valve being incapable of long-term airing, and the air venting valve is poorly sealed, which affects the effect of air blowing.

The main object of the present invention is to provide an air pump which can select a quick air pump or a high pressure air pump, and the air damper has a better airtight effect when the air pumping pressure is larger.

Another object of the present invention is to provide an inflator that can be selected for rapid inflation or high pressure inflation, which has a compact structure and is easy to assemble.

In order to achieve the above object, an air pump capable of selecting a quick inflation or a high pressure inflation according to the present invention includes an inner and outer double cylinder, wherein a vent valve is disposed inside the outer cylinder, and the vent valve has a valve body, The valve body has a rod-shaped body, and a protruding shoulder is arranged at one end of the body, and the valve body is inserted through the valve hole of the air release valve with the body thereof, and the body of the valve body is placed on the body The shoulder position is provided with a leak-stop ring, and the shoulder is pressed by a spring, so that the leak-proof ring is sealed by the inside of the valve hole, and the body of the valve body is externally pushed by a control member. This controls the opening and closing of the vent valve. Since the leakage ring of the gas venting valve is blocked by the inner side of the cylinder body, the greater the pressure of the air pumping, the more the air pressure will force the valve body to press the leakage preventing ring to block the sealing body. Valve holes, so there is no problem with deflation.

10‧‧‧ Pedestal

11‧‧‧Perforation

12‧‧‧Air intake

13‧‧‧ Ventilation holes

14‧‧‧ accommodating slots

15‧‧‧ valve hole

16‧‧‧Cup ring

20‧‧‧ outer cylinder

25‧‧‧ End kit

26‧‧‧Perforation

30‧‧‧ inner cylinder

31‧‧‧Perforation

40‧‧‧ grip

50‧‧‧ air duct

60‧‧‧Inner cylinder piston

61‧‧‧Cup ring

62‧‧‧check valve

63‧‧‧ Cover

64‧‧‧ leaking ring

70‧‧‧Outer cylinder piston

71‧‧‧Perforation

72‧‧‧One-way intake ring

73‧‧‧ leaking ring

80‧‧‧ check valve

90‧‧‧Discharge valve

91‧‧‧ valve body

92‧‧‧ Body

93‧‧‧Shoulder

94‧‧‧ Spring

95‧‧‧ leaking ring

96‧‧ ‧Flap

100‧‧‧Controls

101‧‧‧Axis

102‧‧‧ curved end

103‧‧‧ Thin end

104‧‧‧ thick end

110‧‧‧ airway

120‧‧‧Wind mouth

The first figure is an external perspective view of an embodiment of the present invention.

The second drawing is a perspective cross-sectional view taken along line A-A in the first drawing.

The third drawing is a plan sectional view taken along line A-A in the first drawing.

The fourth figure is an enlarged view of the lower part of the third figure, showing that the deflation valve is in a closed state, and the low pressure atmosphere can be used for air pumping.

The fifth figure is similar to the fourth figure, showing that the deflation valve is open and can be pumped with high pressure and small air volume.

The sixth figure is a partial cross-sectional perspective view of the pedestal and the deflation valve, showing that the deflation valve is closed and can be inflated at a low pressure atmosphere.

The seventh figure is similar to the sixth figure, showing that the deflation valve is in an open state, and can be pumped with high pressure and small air volume.

The eighth figure is an enlarged view of the upper portion near the grip portion in the third figure.

An embodiment is described with reference to the following figures. As shown in the figure, the embodiment of the present invention includes:

A base (10) is provided with a through hole (11) at the center, and an air inlet hole (12) and a vent hole (13) are disposed on both sides of the through hole (11).

An outer cylinder (20) is fixed to the base (10) at one end.

An end kit (25) is disposed at the other end of the outer cylinder (20), and a perforation (26) is disposed in the center of the end sleeve (25).

An inner cylinder (30) is disposed in the through hole (26) of the end sleeve (25) and a portion of the cylinder body is received in the outer cylinder (20), and is coaxially sleeved with the outer cylinder (20).

A grip (40) is secured to the exposed end of the inner cylinder (30).

An air guiding tube (50) is fixed at one end to a central through hole (11) of the base (10) and coaxially received in the inner cylinder (30).

An inner cylinder piston (60) is fixed to the other end of the air guiding tube (50) and accommodated in the inner cylinder (30).

An outer cylinder piston (70) is fixed to the inner end of the inner cylinder (30) and is accommodated in the outer cylinder (20). A through hole (71) is formed in the center for the air guiding tube (50) to pass through.

a check valve (80) is disposed in the air inlet hole (12) of the base (10) The gas in the outer cylinder (20) can only flow into the susceptor (10) in one direction and cannot flow out in the opposite direction.

A bleed valve (90) is disposed in the vent hole (13) of the base (10).

A control member (100) is used to control the opening and closing of the air release valve (90).

An air inlet (110) communicates with the central perforation (11) of the base (10) and the air inlet (12).

A wind mouth (120) is connected to the air inlet (110).

The venting hole (13) of the pedestal (10) has a receiving groove (14), and a valve hole (15) is provided at the bottom of the accommodating groove (14) to communicate with the outside; the venting valve (90) includes a valve body (91) having a rod-shaped body (92) having a convex shoulder (93) at one end of the body (92), the valve body (91) being a rod The body (92) is received in the valve hole (15), and the free end of the body (92) protrudes outside the valve hole (15), and the shoulder (93) is located in the receiving groove (14). a spring (94), one end of which abuts against the shoulder (93) of the valve body (91), and the other end of which is fixed in the receiving groove (14) for pushing the valve body (91) to close The valve hole (15); a leak-proof ring (95), sleeved on the body (92) of the valve body (91) abuts against the shoulder (93), facing the valve hole (15), A stop piece (96) is fixed to the receiving groove (14) for fixing the other end of the spring (94).

The control member (100) opens and closes the vent hole (13) by externally pushing the free end of the body portion (92) of the valve body (91).

The control member (100) has an elongated body, and is pivoted on a side of the base (10) by a shaft (101). The one end (102) is curved and located under the valve body (91) of the air release valve (90). The curved end (102) has a thin end (103) and a thick end (104), and the other end (105) of the control member (100) is located outside the base (10) for external force to be rotated. The control member (100) is swing-displaced, and when the thin end (103) of the curved end (102) is located directly below the valve body (91), the air release valve (90) is closed, such as the fourth And the two ends are shown; when the thick end (104) of the curved end (102) is located directly below the valve body (91), the free end of the body (92) of the valve body (91) is The thick end (104) is jacked up to open the valve hole (15), and the air release valve (90) is opened, as shown in the fifth and seventh figures.

As shown in the eighth figure, the inner cylinder piston (60) includes a cup ring (61) and a one-way valve (62), and the exposed end of the inner cylinder (30) is provided with a sleeve (63) and a leak stop. Ring (64). As shown in the fourth figure, a one-way intake ring (72) is disposed between the outer cylinder piston (70) and the outer cylinder (20), and between the outer cylinder piston (70) and the air guide tube (50) A leak stop ring (73) is provided. A cup-shaped ring (16) is disposed between the base (10) and the outer cylinder (20). As shown in the second figure, the inner cylinder (30) is provided with a through hole (31) at a position close to the outer cylinder piston (70).

As shown in the third figure, the outer cylinder (20) and the inner cylinder (30) are respectively separated into an upper space and a lower space by the outer cylinder piston (70) and the inner cylinder piston (60), in the third figure. The lower space of the outer cylinder (20) approaches zero, and the upper space of the inner cylinder (30) also approaches zero.

When the grip (40) is pulled up, the lower space of the outer cylinder (20) is enlarged, and air passes over the upper space of the outer cylinder (20) over the one-way intake ring of the outer cylinder piston (70). (72) In addition, the upper space of the inner cylinder (30) is also enlarged, and air is replenished by the lower space of the inner cylinder (30) over the cup ring (61) of the inner cylinder piston (60).

When the grip (40) is pressed down, the air in the lower space of the outer cylinder (20) is driven into the intake hole (12) of the base (10), and due to the check valve (80) The action cannot be reversed, and the air in the upper space of the inner cylinder (30) is driven into the inner cylinder piston (60) and flows into the draft tube (50) via the one-way valve (62). The air entrainment passage (110) merges and flows out of the tuyere (120).

When the grip (40) is depressed, external air can enter the upper space of the outer cylinder (20) via the gap between the end sleeve (25) and the inner cylinder (30), and through the perforation (31) Enter the lower space of the inner cylinder (30) to replenish.

When the control member (100) is in the position shown in Figures 4 and 6, the deflation valve (90) is in a closed state, and the inner cylinder (30) and the outer cylinder (20) simultaneously function when inflating, and the air is inflated. It is suitable for pumping at low pressure.

When the control member (100) is moved to the position shown in Figures 5 and 7, the deflation valve (90) is in an open state, at which time the outer cylinder (20) is deactivated and its gas will be discharged by the bleed valve (90). Only the inner cylinder (30) has a function, and it is a small air pumping, which is suitable for air pumping operation at high pressure.

The valve body (91) of the deflation valve (90) of the present invention seals the valve hole (15) from the inside of the cylinder block, so that the airtight effect is excellent when the air is blown, and the internal pressure is increased when the air is blown, and the airtight effect thereof is obtained. The stronger, there will be no problem of discouragement.

Although the embodiment is described as a floor pump, it can also be used in a mini pump.

Claims (1)

The utility model relates to an air pump which can select quick airing or high pressure airing, and comprises: a base, a through hole is arranged in the center, an air inlet hole and a air leakage hole are arranged on both sides of the through hole; and an outer cylinder is fixed at the one end at the base a one end kit is disposed at the other end of the outer cylinder, and a punching hole is disposed in the center of the outer end sleeve; an inner cylinder is disposed in the through hole of the end sleeve and a part of the cylinder body is received in the outer cylinder; The outer cylinder is coaxially sleeved; a grip is fixed to the exposed end of the inner cylinder; an air guiding tube is fixed at one end to the central perforation of the base, and coaxially received in the inner cylinder; an inner cylinder piston, The other end of the air guiding tube is fixed in the inner cylinder; an outer cylinder piston is fixed at the inner end of the inner cylinder and is accommodated in the outer cylinder, and a perforation is arranged in the center for the air guiding tube to be worn. a check valve is disposed in the air inlet hole of the base, so that the gas in the outer cylinder can only flow into the base in one direction and cannot flow backward; a vent valve is disposed on the base a venting hole; a control member for controlling opening and closing of the venting valve; an air guiding passage connecting the pedestal a central perforation and the air inlet; a tuyeres are connected to the air passage; wherein the air leakage hole of the base has a receiving groove, and a valve hole is provided at the bottom of the receiving groove to communicate with the outside; the air release valve The utility model comprises: a valve body having a rod-shaped body having a protruding shoulder at one end of the body, the valve body being received in the valve hole by a rod-shaped body thereof, The free end of the body protrudes out of the valve hole, and the shoulder is located in the receiving groove; a spring has one end against the shoulder of the valve body, and the other end is fixed in the receiving groove for pushing the top The valve body closes the valve hole; a leak-proof ring is sleeved on the body of the valve body and abuts against the valve hole for stopping the leak; the control member is externally pushed up the valve The air leakage hole is opened and closed by the body; wherein the control member has an elongated body, and the middle portion is pivoted on one side of the base, and one end is curved, and is located below the valve body of the air release valve, and has a thin end and One thick end and the other end are located outside the base for external force to rotate.