TW201812173A - Air pump capable of selecting fast pumping or high-pressure pumping having an air discharge valve provided with a better airtightness effect when the pumping pressure is increased - Google Patents

Abstract

The presents invention discloses an air pump capable of selecting fast pumping or high-pressure pumping, which comprises: a base having a center defined therein a penetrated hole, wherein two sides of the penetrated hole are formed with an air inlet hole and an air discharge hole; an outer cylinder having one end fastened with the base; an end sleeve member disposed at another end of the outer cylinder, wherein the center of the end sleeve member is formed with a penetrated hole; an inner cylinder received in the penetrated hole of the end sleeve member, wherein a part of a cylinder body is accommodated in the outer cylinder and coaxially sleeved with the outer cylinder; a handle fasted at an exposed end of the inner cylinder; an air duct having one end fastened in the penetrated hole at the center of the base, and coaxially accommodated in the inner cylinder; an inner cylinder piston fastened at another end of the air duct and accommodated in the inner cylinder; an outer cylinder piston fastened at an inner end of the inner cylinder and accommodated in the outer cylinder, wherein the center of the outer cylinder piston is formed with a penetrated hole for receiving the air duct; a check valve disposed in the air inlet hole of the base for only allowing air in the outer cylinder to uni-directionally flow into the base thereby avoiding backflow; an air discharge valve disposed in the air discharge hole of the base; a control member for controlling the air discharge valve to be opened or closed; an air guiding passageway communicated with the penetrated hole at the center of the base and the air inlet hole; and a wind nozzle connected to the air guiding passageway.

Description

   Inflatable pump with quick or high pressure   

The invention relates to a pump, in particular to a pump that can be selected for quick pumping or high-pressure pumping.

It is known to have internal and external double cylinders. You can choose fast inflation of double cylinders for simultaneous operation, or high-pressure inflation pumps with only single cylinder operations. Most of them are equipped with a vent valve on the air passage of the outer cylinder (large bore) or the outer cylinder. This type of structure often leads to poor airtightness of the vent valve due to the pressure of the vent valve not being able to withstand long-term inflating pressure, which affects the effect of air volume inflating.

The main purpose of the present invention is to provide a pump which can choose fast pumping or high-pressure pumping, and the air-tightening effect of the vent valve is higher when the pumping pressure is higher.

Another object of the present invention is to provide a pump that can be selected from fast inflation or high-pressure inflation, which has a simple structure and is easy to assemble.

In order to achieve the purpose of disclosure, an inflator that can be selected to be fast-inflated or high-pressure inflated according to the present invention includes an inner and outer double cylinder, which is provided with a vent valve inside the outer cylinder. The vent valve has a valve body, and The valve body has a rod-shaped body, and a protruding shoulder is provided at one end of the body. The valve body passes through the valve hole of the vent valve with the body portion, and the body of the valve body abuts against the valve body. A leak-proof ring is provided at the shoulder position, and the shoulder is pressed by a spring, so that the leak-proof ring blocks the valve hole from the inside, and a control member pushes the body of the valve body from the outside. This controls the opening and closing of the vent valve. Since the leak-proof ring of the air relief valve is used to block the valve hole from the inside of the cylinder, the higher the pressure of the pump, the more the air pressure will force the valve body to press the leak-proof ring with a greater pressure to block the valve. Valve hole, so there will be no deflation problem.

10‧‧‧ base

11‧‧‧ perforation

12‧‧‧air inlet

13‧‧‧air vent

14‧‧‧ Receiving slot

15‧‧‧valve

16‧‧‧ cup ring

20‧‧‧ Outer cylinder

25‧‧‧end kit

26‧‧‧perforation

30‧‧‧Inner cylinder

31‧‧‧perforation

40‧‧‧Grip

50‧‧‧ airway

60‧‧‧Inner cylinder piston

61‧‧‧cup ring

62‧‧‧Check valve

63‧‧‧ Cover

64‧‧‧Leak stop ring

70‧‧‧Outer cylinder piston

71‧‧‧perforation

72‧‧‧ one-way air intake ring

73‧‧‧Leak Stop Ring

80‧‧‧Check valve

90‧‧‧Relief valve

91‧‧‧Valve body

92‧‧‧ Body

93‧‧‧Shoulder

94‧‧‧Spring

95‧‧‧Leak stop ring

96‧‧‧baffle

100‧‧‧Control

101‧‧‧axis

102‧‧‧ curved end

103‧‧‧ thin end

104‧‧‧thick end

110‧‧‧ Induction Airway

120‧‧‧ Wind mouth

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

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

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

The fourth figure is an enlarged view of the lower part of the third figure, showing that the vent valve is in a closed state and can perform low-pressure air volume pumping.

The fifth picture is similar to the fourth picture, showing that the vent valve is in an open state, and can perform high pressure and small air pumping.

The sixth figure is a partial cross-sectional perspective view of the base and the vent valve, showing that the vent valve is in a closed state and can perform low-pressure air volume pumping.

The seventh picture is similar to the sixth picture, showing that the vent valve is in an open state, and can perform high pressure and small air pumping.

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

An embodiment is illustrated with the following illustration. As shown in the figure, the embodiment of the present invention includes:

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

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

One end kit (25) is provided at the other end of the outer cylinder (20), and a perforation (26) is set in the center of the end kit (25).

An inner cylinder (30) passes through the perforation (26) of the end kit (25) and part of the cylinder body is accommodated in the outer cylinder (20), and is coaxially sleeved with the outer cylinder (20).

A grip (40) is fixed on the exposed end of the inner cylinder (30).

An air duct (50) is fixed at one end of the central perforation (11) of the base (10) with one end, and is coaxially received in the inner cylinder (30).

An inner cylinder piston (60) is fixed at the other end of the air pipe (50) and is housed in the inner cylinder (30).

An outer cylinder piston (70) is fixed on the inner end of the inner cylinder (30) and is accommodated in the outer cylinder (20). A perforation (71) is provided in the center for the air duct (50) to pass through.

A check valve (80) is provided in the air inlet (12) of the base (10), so that the gas in the outer cylinder (20) can only flow into the base (10) in one direction and cannot Reverse outflow.

A vent valve (90) is provided 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 introduction channel (110) communicates with the central perforation (11) of the base (10) and the air inlet (12).

A wind nozzle (120) is connected to the air induction channel (110).

The vent hole (13) of the base (10) has an accommodating slot (14), and a valve hole (15) is provided at the bottom of the accommodating slot (14) to communicate with the outside; the vent valve (90) contains : A valve body (91) having a rod-shaped body (92), with a protruding shoulder (93) at one end of the body (92), the valve body (91) is a rod The body portion (92) is received in the valve hole (15), the free end of the body portion (92) projects out of the valve hole (15), and the shoulder portion (93) is located in the accommodation groove (14). ); A spring (94), one end of which abuts against the shoulder (93) of the valve body (91), and the other end is fixed in the accommodation groove (14), and is used to push the valve body (91) to close The valve hole (15); a leakage ring (95), sleeved on the body (92) of the valve body (91), abuts against the shoulder (93), faces the valve hole (15), and is used for Leak-proof; a baffle (96) is fixed in the accommodating groove (14) for the other end of the spring (94) to be fixed.

The control member (100) pushes the free end of the body (92) of the valve body (91) outside to open and close the vent hole (13).

The control member (100) is an elongated body, and a shaft (101) is pivoted on the side of the base (10) in the middle. One end (102) is arc-shaped and is located below the valve body (91) of the air relief valve (90). The arc-shaped end (102) has a thin end (103) and a thick end (104). The other end (105) of the control member (100) is located outside the base (10) and can be turned by external force. The control member (100) is swung and shifted, and when the thin end (103) of the curved end (102) is located directly below the valve body (91), the vent valve (90) is in a closed state, as in the fourth As shown in Figures 6 and 2; 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 vent valve (90) is in an open state, as shown in the fifth and seventh figures.

As shown in the eighth figure, the inner cylinder piston (60) includes a cup-shaped ring (61) and a check valve (62). The exposed end of the inner cylinder (30) is provided with a sleeve (63) and a leak stopper. Ring (64). As shown in the fourth figure, a one-way air intake ring (72) is provided between the outer cylinder piston (70) and the outer cylinder (20), and between the outer cylinder piston (70) and the air duct (50) A leakage stop ring (73) is provided. A cup-shaped ring (16) is provided between the base (10) and the outer cylinder (20). As shown in the second figure, the inner cylinder (30) is provided with a perforation (31) near the outer cylinder piston (70).

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

When the grip (40) is pulled upward, the lower space of the outer cylinder (20) is enlarged, and the air from the upper space of the outer cylinder (20) passes over the one-way intake ring of the outer cylinder piston (70). (72) Entering the supplement, the upper space of the inner cylinder (30) is also enlarged, and the air enters the supplement from the cup-shaped ring (61) of the inner cylinder piston (60) from the lower space of the inner cylinder (30).

When the grip (40) is pressed down, the air in the lower space of the outer cylinder (20) is driven into the air inlet (12) of the base (10), and due to the check valve (80) The function cannot be reversed. The air in the upper space of the inner cylinder (30) is driven into the inner cylinder piston (60) and flows into the deflector (50) through the one-way valve (62). The air induction channel (110) converges and flows out from the tuyere head (120).

When the grip (40) is depressed, external air can enter the upper space of the outer cylinder (20) through the gap between the end kit (25) and the inner cylinder (30), and pass through the perforation (31). The lower space entering the inner cylinder (30) is supplemented.

When the control member (100) is located at the position shown in Figures 4 and 6, the air release valve (90) is in a closed state, and the inner cylinder (30) and the outer cylinder (20) have functions at the same time when they are inflated. , Suitable for pumping operation at low pressure.

When the control member (100) is moved to the position shown in Figures 5 and 7, the air vent valve (90) is in an open state. At this time, the outer cylinder (20) loses its function and its gas will be discharged by the air vent valve (90). Only the inner cylinder (30) has a function, which belongs to a small amount of air pumping, and is suitable for high-pressure pumping operations.

The valve body (91) of the vent valve (90) of the present invention seals the valve hole (15) inside the cylinder body, so its airtight effect is very good when it is inflated, and the greater the internal pressure when it is inflated, its airtight effect The stronger, there will be no discouragement.

Although this embodiment is described by using a floor pump, it can also be used in a portable mini pump.

Claims (4)

    An air pump with a choice of quick or high-pressure air pump includes: a base, a perforation in the center, an air inlet hole and an air vent hole on both sides of the perforation; an outer cylinder, which is fixed to the base with one end One end kit is provided at the other end of the outer cylinder, and a perforation is provided in the center of the end kit; an inner cylinder is penetrated through the perforation of the end kit and part of the cylinder body is accommodated in the outer cylinder, and the The outer cylinder is coaxially sleeved; a grip is fixed to the exposed end of the inner cylinder; an air duct is fixed at one end to the central perforation of the base and coaxially accommodated in the inner cylinder; an inner cylinder piston, Fixed to the other end of the air pipe and accommodated in the inner cylinder; an outer cylinder piston fixed to the inner end of the inner cylinder and housed in the outer cylinder, with a perforation in the center for the air pipe to pass through A check valve is provided in the air intake hole of the base to allow the gas in the outer cylinder to flow into the base only in one direction and cannot flow out in the reverse direction; a vent valve is provided on the base An air vent hole; a control member for controlling the opening and closing of the air vent valve; an air induction channel communicating with the base The central perforation is connected with the air inlet hole; a vent nozzle is connected with the air induction channel; wherein the vent hole of the base has a receiving slot, and a valve hole is provided at the bottom of the receiving slot to communicate with the outside; the vent valve It includes: a valve body having a rod-shaped body, and a protruding shoulder at one end of the body; the valve body is accommodated in the valve hole with its rod-shaped body, The free end of the body protrudes out of the valve hole, and its shoulder is located in the accommodation groove; a spring, one end of which is against the shoulder of the valve body, and the other end is fixed in the accommodation groove for ejecting. The valve body closes the valve hole; a leakage ring is sleeved on the body of the valve body against the shoulder and faces the valve hole to prevent leakage; the control member pushes the valve from the outside The body's body opens and closes the vent.         According to the first range of the patent application, a pump that can choose fast or high-pressure pumping, wherein the control member is an elongated body, a shaft is pivotally arranged on the side of the base, and one end is arc-shaped and located on the venting Below the valve body of the valve, there is a thin end and a thick end, and the other end is located outside the base, which can be turned by external force.         An air pump which can be fast-inflated or high-pressure inflated is included, which includes inner and outer double cylinders. A vent valve is provided inside the outer cylinder. The vent valve has a valve body and a valve hole. The valve body has a rod-shaped body. A protruding shoulder portion is provided at one end of the body portion, the valve body is passed through the valve hole of the vent valve with its body portion, and a leakage stop ring is provided on the body portion of the valve body against the shoulder portion. And press the shoulder with a spring, so that the leak-tight ring closes the valve hole from the inside, and a control member pushes the valve body from the outside, thereby controlling the opening and closing of the vent valve.         According to a type 3 of the patent application scope, a fast or high-pressure pump can be selected. The free end of the valve body protrudes out of the valve hole, and the control member pushes the valve body from the outside. Free end of the ministry.