Air pump with rotating pressure gauge

Abstract

The present invention discloses a pump with a rotary pressure gauge, which includes a pumping unit, a gauge body unit, and a gas guiding unit. The pumping unit defines an air outlet channel extending along a first axis and an insertion channel extending along a second axis that is spaced and transversely intersects the first axis, and the insertion channel is partially communicated with the air outlet channel; the gauge body unit includes a pressure gauge and a protruding shaft that protrudes outward from the pressure gauge and is inserted into the air outlet channel, and the protruding shaft has an annular groove formed on the outer peripheral surface and corresponding to communicate with the insertion channel; the gas guiding unit includes a manifold that extends into the insertion channel and is clamped in the annular groove. Through the structural design of clamping the protruding shaft by the manifold in the present invention, the effect of accurate positioning can be achieved.

Description

Technical Field

[0001] The present invention relates to a pump, and particularly to a pump with a rotary pressure gauge. Background Art

[0002] Currently, there are various types of pumps on the market, generally including a pumping main body, a pressure gauge, and an air duct. The pumping main body has a base, a barrel seat extending upward from the base, and a piston rod that can move up and down and extend into the barrel seat. The base defines an air outlet channel communicating with the barrel seat. When the piston rod moves downward to compress air, high-pressure gas is generated and sent into the air outlet channel. The pressure gauge communicates with the air outlet channel and can display the pressure of the high-pressure gas. The air duct communicates with the air outlet channel and is used to guide the high-pressure gas to output outward.

[0003] However, since the pressure gauge is screwed on the base and can be rotated to adjust the angle during use, this screwed connection design not only has the problem of difficult accurate positioning, but also is prone to loosening after long-term use. Therefore, the design of the pump still needs to be improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a pump with a rotary pressure gauge that can at least overcome the disadvantages of the background art.

[0005] A pump with a rotary pressure gauge of the present invention includes a pumping unit, a gauge body unit, and an air guiding unit. The gauge body unit includes a pressure gauge. The pumping unit defines an air outlet channel extending along a first axis and an insertion channel extending along a second axis that is spaced and transversely intersects the first axis. The insertion channel is partially communicated with the air outlet channel. The gauge body unit further includes a protruding shaft that protrudes outward from the pressure gauge and inserts into the air outlet channel. The protruding shaft has a ring groove formed in the outer peripheral surface and corresponding to communicate with the insertion channel. The air guiding unit includes a manifold that extends into the insertion channel and is clamped in the ring groove.

[0006] A pump with a rotary pressure gauge of the present invention, the protruding shaft has a shaft hole that communicates from one end away from the pressure gauge to the pressure gauge, and a through hole that transversely communicates from the shaft hole to the outer peripheral surface and corresponds to communicate with the ring groove.

[0007] A pump with a rotary pressure gauge of the present invention, the air guiding unit further includes a hose connected to one end of the manifold, and an inflation head installed at the end of the hose away from the manifold. The manifold has a through hole that communicates from one end away from the hose to the hose, and a perforation that transversely communicates from the through hole to the outer peripheral surface and corresponds to communicate with the ring groove.

[0008] A pump with a rotary pressure gauge according to the present invention, wherein the cross-section of the annular groove is arc-shaped, the cross-section of the insertion channel is circular, and the manifold is a circular tube whose partial outer peripheral surface is fitted into the annular groove.

[0009] A pump with a rotary pressure gauge according to the present invention, wherein the air guiding unit further includes an end cap detachably sleeved on one end of the manifold away from the hose.

[0010] A pump with a rotary pressure gauge according to the present invention, wherein the air guiding unit further includes an airtight member sleeved between one end of the manifold away from the hose and the end cap.

[0011] A pump with a rotary pressure gauge according to the present invention, wherein the pumping unit includes a base having a boss portion forming a first inclined surface perpendicular to the first axis. The pressure gauge has a surface and a second inclined surface forming an angle with the surface and abutting against the first inclined surface. The protruding shaft protrudes obliquely along the first axis from the pressure gauge and is rotatably pivoted in the air outlet channel. By rotating relative to the first inclined surface through the second inclined surface, the meter body unit can be converted between a use position where the surface of the pressure gauge extends horizontally and a retracted position where the surface of the pressure gauge extends vertically relative to the pumping unit.

[0012] A pump with a rotary pressure gauge according to the present invention, wherein the second inclined surface of the pressure gauge is perpendicular to the first axis and has the same slope as the first inclined surface of the boss portion, both being inclined surfaces forming a 45-degree angle with the surface. When the meter body unit is in the use position, the surface is placed horizontally, and when in the retracted position, the surface is placed vertically.

[0013] A pump with a rotary pressure gauge according to the present invention, wherein the pumping unit further includes a cylinder base protruding upward from the side of the boss portion of the base, a piston rod that can move up and down and extends into the cylinder base and cooperates with the cylinder base to define the actuation space, a pedal provided at the top of the piston rod for stepping on and pressing down the piston rod, and an elastic member provided between the cylinder base and the piston rod and having an elastic force to drive the piston rod to press down and then reset upward.

[0014] A pump with a rotary pressure gauge according to the present invention, wherein the pumping unit further includes an auxiliary member rotatably installed on the side of the base opposite to the boss portion. When the meter body unit is in the use position, the auxiliary member swings away from the cylinder base and lies flat on the ground downward. When the meter body unit is in the retracted position, the auxiliary member swings towards the cylinder base and upwardly locks and limits the pedal.

[0015] A pump with a rotary pressure gauge according to the present invention, the pumping unit further includes a cylinder base protruding upward beside the boss portion of the base, a piston rod movably inserted into the cylinder base and cooperating with the cylinder base to define the actuating space, and a handle provided at the top of the piston rod for manually pressing down the piston rod.

[0016] A pump with a rotary pressure gauge according to the present invention, the pumping unit further includes an auxiliary member fixedly formed on at least one side of the base for stepping and positioning.

[0017] The beneficial effect of the present invention is that by clamping the protruding shaft through the manifold, not only can it be accurately positioned, but also there is no risk of loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein:

[0019] Figure 1 is an exploded perspective view of an embodiment of the pump with a rotary pressure gauge of the present invention;

[0020] Figure 2 is a sectional side view of the embodiment, showing a pumping unit in a reset state, at this time a meter body unit is in a use position;

[0021] Figure 3 is an incomplete enlarged sectional view of the embodiment;

[0022] Figure 4 is a view similar to Figure 2 showing the pumping unit in an intake state;

[0023] Figure 5 is a view similar to Figure 4 showing the meter body unit in a retracted position;

[0024] Figure 6 is an exploded perspective view of a second embodiment of the pump with a rotary pressure gauge of the present invention;

[0025] Figure 7 is a sectional side view of the second embodiment, showing the meter body unit in the use position. DETAILED DESCRIPTION OF THE INVENTION

[0026] Before the present invention is described in detail, it should be noted that in the following description, similar components are denoted by the same reference numerals.

[0027] Refer to Figure 1 、 2, 3, a first embodiment of a pump with a rotary pressure gauge according to the present invention includes a pumping unit 1, a gauge body unit 2, and a gas guiding unit 3.

[0028] In terms of the internal space, the pumping unit 1 defines an operating space 11 in which compressed air can be generated to produce high-pressure gas, an air outlet passage 12 extending along a first axis 121 and communicating with the operating space 11, and an insertion passage 13 extending along a second axis 131 that is spaced and intersects the first axis 121 transversely, and the insertion passage 13 is partially communicated with the air outlet passage 12.

[0029] Looking at the basic structure again, the pumping unit 1 of this first embodiment is in the form of a foot-operated pump. The pumping unit 1 includes a base 14, a cylinder base 15 protruding straight upward from the base 14, a piston rod 16 that can move up and down and extend into the cylinder base 15 and cooperates with the cylinder base 15 to define the operating space 11, a foot pedal 17 provided at the top end of the piston rod 16 for stepping on and pressing down the piston rod 16, an elastic member 18 provided between the cylinder base 15 and the piston rod 16 and having an elastic force to drive the piston rod 16 to reset upward after being pressed down, and an auxiliary member 19 rotatably mounted on one side of the base 14.

[0030] The base 14 has a convex portion 141 protruding outward on the side of the cylinder base 15 opposite to the auxiliary member 19. The convex portion 141 is formed with a first inclined surface 142 facing away from the cylinder base 15, and a channel surface 143 surrounding and defining the air outlet passage 12. The first inclined surface 142 gradually slopes downward from the side close to the cylinder base 15 to the side far from the cylinder base 15, is perpendicular to the first axis 121 and forms a 45-degree angle with the cylinder base 15, and the air outlet passage 12 is recessed into the first inclined surface 142 along the first axis 121. The foot pedal 17 has a clamping groove 171 formed on the top surface. The elastic member 18 is a compression spring. The auxiliary member 19 is in a U shape and has two side rod segments 191 spaced on both sides of the foot pedal 17 and pivotally connected to one end of the base 14 at one end, and a connecting rod segment 192 connecting the ends of the side rod segments 191 far from the base 14 and corresponding to the clamping groove 171.

[0031] The table body unit 2 includes a pressure gauge 21 and a protruding shaft 22 that protrudes from the pressure gauge 21 and is airtightly inserted into the air outlet channel 12. The pressure gauge 21 has a surface 211 and a second inclined surface 212 that abuts against the first inclined surface 142 of the convex platform portion 141. The second inclined surface 212 is perpendicular to the first axis 121 and has the same slope as the first inclined surface 142 of the convex platform portion 141, both being inclined surfaces that form a 45-degree angle with the surface 211. As for the internal structure of the pressure gauge 21 and the operating principle for measuring the high-pressure gas, they are not the focus of the present invention and will not be described herein. The protruding shaft 22 protrudes from the pressure gauge 21 obliquely along the first axis 121 and is perpendicular to the second inclined surface 212, and is pivotally connected to be rotatable within the air outlet channel 12. The protruding shaft 22 has a shaft hole 221 that extends along the first axis 121 and communicates from the end far from the pressure gauge 21 to the pressure gauge 21, a through hole 222 that intersects the shaft hole 221 and communicates with the outer peripheral surface, and an annular groove 223 that is recessed in a circle on the outer peripheral surface and communicates the through hole 222 with the insertion channel 13.

[0032] The air guiding unit 3 is used to guide the high-pressure gas to output outward, and includes a manifold 31 that extends into the insertion channel 13 and is stuck in the annular groove 223, a hose 32 that is connected to one end of the manifold 31 and extends outward, an inflation head 33 that is installed at the end of the hose 32 far from the manifold 31 for the high-pressure gas to spray out, an end cap 34 that is detachably sleeved on the other end of the manifold 31, and an airtight member 35 that is sleeved between the end of the manifold 31 far from the hose 32 and the end cap 34. The manifold 31 has a through hole 311 that communicates from the end far from the hose 32 to the hose 32, and a through hole 312 that is horizontally communicated from the through hole 311 to the outer peripheral surface and is correspondingly communicated with the annular groove 223.

[0033] It is worth mentioning that the cross-section of the annular groove 223 of the protruding shaft 22 is arc-shaped, the cross-section of the insertion channel 13 that communicates with the annular groove 223 is circular, and the manifold 31 corresponding to be inserted into the annular groove 223 and the insertion channel 13 is circular tubular. Therefore, during assembly, as long as the protruding shaft 22 is first inserted into the air outlet channel 12, then the manifold 31 is inserted from one end of the insertion channel 13, and the end cap 34 is screwed onto the manifold 31 from the other end of the insertion channel 13, the manifold 31 can be positioned in the insertion channel 13 without detachment. At the same time, through the design that a partial outer peripheral surface of the manifold 31 is fitted into the annular groove 223, the protruding shaft 22 can be stuck and limited, so that the protruding shaft 22 can be positioned in the air outlet channel 12 without detachment and can rotate around the first axis 121.

[0034] The air pumping situation of the air pump will be further described below. First, swing the auxiliary member 19 away from the cylinder base 15 and place it flat on the ground downward. Then, step on the auxiliary member 19 with one foot to position it, and step on the pedal 17 with the other foot. When applying force to step on the pedal 17, as Figure 4 shown, press down the piston rod 16 to compress the air in the working space 11 into high-pressure gas. The high-pressure gas flows forward into the air outlet channel 12 and flows into the pressure gauge 21 from the protruding shaft 22. At the same time, it will also flow from the manifold 31 into the hose 32 and be discharged from the inflation head 33. Then, when not applying force to step on the pedal 17, as Figure 2 shown, the piston rod 16 can be driven to rise by the restoring elastic force of the elastic member 18 to reset to its original state for intake again when stepped on.

[0035] It should be noted that when in use, the angle of the pressure gauge 21 can also be changed as needed. When adjusting, just rotate the pressure gauge 21 to make the protruding shaft 22 rotate 180 degrees in place in the air outlet channel 12. The second inclined surface 212 will rotate relative to the first inclined surface 142, so that the meter body unit 2 can be switched between a use position (see Figure 2 ) and a retracted position (see Figure 5 ) relative to the air pumping unit 1. As Figure 2 shown, when the meter body unit 2 is in the use position, the surface 211 extends horizontally and is placed horizontally upward. When the air pumping unit 1 is pumping air, the pressure can be observed while pumping air. And when the meter body unit 2 is in the retracted position, the surface 211 extends vertically and is placed upright outward for easy retraction. As Figure 5 shown, when the meter body unit 2 is in the retracted position, the auxiliary member 19 can also be leaned against the cylinder base 15 and swung upward, and the connecting rod segment 192 is used to correspondingly latch the clamping groove 171 to limit the movement of the pedal 17 so that it cannot pump air. Finally, the hose 32 can be wound and positioned around the periphery of the cylinder base 15 to reduce the volume.

[0036] Refer to Figure 6 、 7 , a second embodiment of the air pump with a rotary pressure gauge according to the present invention. The structure of this second embodiment is generally the same as that of the first embodiment, and the difference lies in that: the form of the air pumping unit 1 is different. The air pumping unit 1 in this second embodiment is in the form of a hand-operated air pump. The air pumping unit 1 also includes a base 14, a cylinder base 15, and a piston rod 16, and the air pumping unit 1 further includes a handle 17' provided at the top of the piston rod 16 to replace Figure 1the pedal 17, which can be held by the user to inflate the air, and meanwhile, the air inflation unit 1 also omits Figure 1 the setting of the elastic member 18, and modifies the auxiliary member 19 into a pedal fixedly formed on at least one side of the base 14, so that the base 14 can be stably supported on a ground and can be used by the user to step on and position when in use.

[0037] In summary, the present invention provides a pump with a rotary pressure gauge. Through the design of the manifold 31 clamping the protruding shaft 22, it has the effect of accurate positioning, is not easy to loosen, and can improve the product yield and service life. Therefore, the purpose of the present invention can be truly achieved.

[0038] In addition, for the pump with a rotary pressure gauge of the present invention, through the design of the first inclined surface 142 of the base 14 and the second inclined surface 212 of the pressure gauge 21, the rotation of the pressure gauge 21 can change the angle of the surface 211. When in the use position, the surface 211 is horizontal for easy viewing. Therefore, the size of the surface 211 can be relatively increased to facilitate reading the pressure value. When in the retracted position, the surface 211 is upright and does not protrude from the base 14. Therefore, the storage space can be reduced and the packaging volume can be decreased.

[0039] The above are only the embodiments of the present invention, and the scope of implementation of the present invention cannot be limited thereby. That is, all simple equivalent changes and modifications made according to the claims and the content of the specification of the present invention still belong to the scope of the present invention.

Claims

1. A bicycle pump with a rotary pressure gauge, comprising: a pumping unit, a gauge body unit, and a gas guiding unit, wherein the gauge body unit includes a pressure gauge. Characterized in that: The pumping unit defines an air outlet channel extending along a first axis and an insertion channel extending along a second axis spaced transversely from the first axis, the insertion channel being partially communicated with the air outlet channel. The gauge body unit further includes a protruding shaft protruding outward from the pressure gauge. The protruding shaft is inserted into and rotatably pivoted in the air outlet channel. The protruding shaft has an annular groove formed on the outer peripheral surface and corresponding to the insertion channel. The protruding shaft is provided with a shaft hole communicating with the pressure gauge and the air outlet channel, and the protruding shaft is provided with a through hole communicating the shaft hole with the annular groove. The gas guiding unit includes a manifold extending into the insertion channel and engaged with the annular groove. The manifold is communicated with the annular groove and can guide gas to be output outward.

2. The bicycle pump with a rotary pressure gauge according to claim 1, Characterized in that: The shaft hole communicates from one end of the protruding shaft away from the pressure gauge to the pressure gauge, and the through hole communicates transversely from the shaft hole to the outer peripheral surface of the protruding shaft and communicates with the annular groove.

3. The bicycle pump with a rotary pressure gauge according to claim 2, Characterized in that: The gas guiding unit further includes a hose connected to one end of the manifold, and an inflation head installed at the end of the hose away from the manifold. The manifold has a through hole communicating from one end away from the hose to the hose, and a perforation communicating transversely from the through hole to the outer peripheral surface and corresponding to the annular groove.

4. The bicycle pump with a rotary pressure gauge according to claim 3, Characterized in that: The cross section of the annular groove is arc-shaped, the cross section of the insertion channel is circular, and the manifold is a circular tube with a partial outer peripheral surface fitted in the annular groove.

5. The bicycle pump with a rotary pressure gauge according to claim 4, Characterized in that: The gas guiding unit further includes an end cap detachably sleeved on the end of the manifold away from the hose.

6. The bicycle pump with a rotary pressure gauge according to claim 5, Characterized in that: The gas guiding unit further includes an airtight member sleeved between the end of the manifold away from the hose and the end cap.

7. The bicycle pump with a rotary pressure gauge according to any one of claims 1 to 6, Characterized in that: The pumping unit includes a base, the base has a convex platform portion forming a first inclined surface perpendicular to the first axis. The pressure gauge has a surface and a second inclined surface forming an angle with the surface and abutting against the first inclined surface. The protruding shaft protrudes obliquely from the pressure gauge along the first axis and is rotatably pivoted in the air outlet channel.

8. The bicycle pump with a rotary pressure gauge according to claim 7, Characterized in that: The second inclined surface of the pressure gauge is perpendicular to the first axis and has the same slope as the first inclined surface of the convex platform portion, both being inclined surfaces forming a 45-degree angle with the surface.

9. A bicycle pump with a rotary pressure gauge according to claim 8, characterized in that: the pumping unit further includes a cylinder base protruding upward from the side of the boss portion of the base, a piston rod that can move up and down and extends into the cylinder base and cooperates with the cylinder base to define an actuating space, a pedal provided at the top of the piston rod for stepping on and pressing down the piston rod, and an elastic member provided between the cylinder base and the piston rod and having an elastic force to drive the piston rod to reset upward after being pressed down.

10. A bicycle pump with a rotary pressure gauge according to claim 9, characterized in that: the pumping unit further includes an auxiliary member rotatably mounted on the side of the base opposite to the boss portion.

11. A bicycle pump with a rotary pressure gauge according to claim 8, characterized in that: the pumping unit further includes a cylinder base protruding upward from the side of the boss portion of the base, a piston rod that can move up and down and extends into the cylinder base and cooperates with the cylinder base to define an actuating space, and a handle provided at the top of the piston rod for holding and pressing down the piston rod.

12. A bicycle pump with a rotary pressure gauge according to claim 11, characterized in that: the pumping unit further includes an auxiliary member fixedly formed on at least one side of the base for foot placement and positioning.

Images