SINGLE-KNOB AIR PUMP

Abstract

The invention discloses a single-knob air pump. The single-knob air pump comprises a housing which is provided with a first air inlet/outlet and a second air inlet/outlet; an air extracting mechanism is arranged in the housing; fan blades of the air extracting mechanism are arranged in a fan blade chamber provided with an air inlet and an air outlet; an air channel switching mechanism is arranged near the fan blade chamber and is provided with an air inlet and an air outlet; the air channel switching mechanism is operatively connected to a knob mechanism which can control the displacement of the air channel switching mechanism; the second air inlet/outlet is provided with an air valve mechanism capable of closing or opening the second air inlet/outlet; and an ejector rod mechanism capable of closing or opening the second air inlet/outlet through the air valve mechanism under the action of the air channel switching mechanism is arranged between the air valve mechanism and the air channel switching mechanism. According to the present invention, by means of cooperation of the air extracting mechanism, the fan blade chamber, the air channel switching mechanism, the knob mechanism, the air valve mechanism and the ejector rod mechanism, an air channel switching machine is made flexible so that the inflatable product can be inflated or deflated on the premise that the air extracting direction of the air extracting mechanism is not changed, an inflatable product is inflated or deflated.

Claims

1. A single-knob air pump comprising a housing which is provided with a first air inlet/outlet and a second air inlet/outlet, wherein that: an air extracting mechanism is arranged in the housing, and fan blades of the air extracting mechanism are arranged in a fan blade chamber provided with an air inlet and an air outlet; an air channel switching mechanism is arranged near the fan blade chamber and is provided with an air inlet and an air outlet; the air channel switching mechanism is operatively connected to a knob mechanism which can control the displacement of the air channel switching mechanism; and the second air inlet/outlet is provided with an air valve mechanism capable of closing or opening the second air inlet/outlet, and an ejector rod mechanism capable of closing or opening the second air inlet/outlet through the air valve mechanism under the action of the air channel switching mechanism is provided between the air valve mechanism and the air channel switching mechanism; so that when the air inlet of the air channel switching mechanism controlled by the knob mechanism is brought into contact with and is communicated with the air outlet of the fan blade chamber, the air outlet of the air channel switching mechanism is opposite to the second air inlet/outlet and the air channel switching mechanism drives the ejector rod mechanism to open the second inlet/outlet through the air valve mechanism, thus performing inflation; or when the air inlet of the air channel switching mechanism controlled by the knob mechanism is not communicated with the air outlet of the fan blade chamber, the air outlet of the air channel switching mechanism is opposite to the second air inlet/outlet and the air channel switching mechanism drives the ejector rod mechanism to open the second inlet/outlet through the air valve mechanism, thus performing inflation; or when the knob mechanism controls the air channel switching mechanism to drive the ejector rod mechanism so as to make the air valve mechanism in a restored state, the air valve mechanism closes the second air inlet/outlet to stop working.

2. The single-knob air pump according to claim 1, wherein that the air outlet of the air channel switching mechanism is provided with a V-shaped structure, including a first inclined plane and a second inclined plane; in the inflated state, the first inclined plane abuts the ejector rod mechanism; or in the deflated state, the second inclined plane abuts the ejector rod mechanism.

3. The single-knob air pump according to claim 2, wherein that the ejector rod mechanism includes a first ejector rod and a second ejector rod intersecting with each other, a pair of guide slots are arranged in the housing, and two ends of the second ejector rod are embedded in the guide slots, one end of the first ejector rod can abut the first inclined plane or the second inclined plane of the air channel switching mechanism, and the other end thereof can operate the air valve mechanism; therefore, in the inflated state, the first inclined plane abuts an end of the first ejector rod and the other end of the first ejector rod operates the air valve mechanism; or in the deflated state, the second inclined plane abuts an end of the first ejector rod and the other end of the first ejector rod operates the air valve mechanism.

4. The single-knob air pump according to claim 3, wherein that the other end of the first ejector rod is brought into contact with and fixed to the air valve mechanism.

5. The single-knob air pump according to claim 1, wherein that the air valve mechanism includes a breathable mesh cover arranged on the second air inlet/outlet, and a seal assembly capable of being compressed or reset by the ejector rod mechanism is arranged in the mesh cover; when the seal assembly is in a compressed state, the seal assembly opens the second air inlet/outlet; or when the seal assembly is in a reset state, the seal assembly closes the second air inlet/outlet.

6. The single-knob air pump according to claim 5, wherein that the seal assembly includes a platen arranged in the mesh cover, which is provided with a seal ring used for sealing and a guide rod which can penetrate the mesh cover, and a spring is sleeved outside the guide rod, between the platen and the mesh cover; under the operation of the platen by the ejector rod mechanism, the seal assembly opens or closes the second air inlet/outlet.

7. The single-knob air pump according to claim 1, wherein that the knob mechanism includes an air channel switching paddle which is rotatably arranged, a knob is connected to the front surface of the air channel switching paddle, and a blocking rod is arranged on the back surface thereof; a sliding slot is arranged on the air channel switching mechanism, and the blocking rod is embedded in the sliding slot.

8. The single-knob air pump according to claim 7, wherein that the air extracting mechanism includes a motor and fan blades, and a pressing switch that can control the operation of the motor is arranged near the air channel switching paddle; the edge of the air channel switching paddle is provided with a contact portion for an inflated state, a contact portion for a deflated state and a non-contact portion for a stopped state between the contact portion for an inflated state and the contact portion for a deflated state; in the inflated state, the contact portion for an inflated state is brought into contact with the pressing switch, and the pressing switch turns on an electrical circuit; in the deflated state, the contact portion for a deflated state is brought into contact with the pressing switch, and the pressing switch turns on the electrical circuit; and in the stopped state, the non-contact portion for a stopped state is separated from the pressing switch.

9. The single-knob air pump according to claim 1, wherein that the housing includes a wire slot accommodating chamber and an assembly accommodating chamber; the air extracting mechanism and the air channel switching mechanism are arranged in the assembly accommodating chamber; the housing includes a housing base and a panel, a detachable cover plate is arranged on the panel corresponding to the wire slot accommodating chamber; and the second air inlet/outlet is arranged on the housing base, and the first air inlet/outlet is arranged on the panel corresponding to the assembly accommodating chamber.

10. The single-knob air pump according to claim 9, wherein that a gap is provided between the wire slot accommodating chamber and the assembly accommodating chamber, and the cover plate is in non-sealing contact with the panel.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0022] FIG. 1 is a schematic structural diagram of a single-knob air pump (inflated state);

[0023] FIG. 2 is an exploded view of the single-knob air pump;

[0024] FIG. 3 is an exploded view of a local structure of the single-knob air pump;

[0025] FIG. 4 is an exploded view of another local structure of the single-knob air pump;

[0026] FIG. 5 is a schematic diagram of a local structure of the single-knob air pump;

[0027] FIG. 6 is a schematic structural view of an air valve mechanism;

[0028] FIG. 7 is an exploded structural view of a knob mechanism;

[0029] FIG. 8 is a schematic structural view of an air channel switching mechanism;

[0030] FIG. 9 is a schematic diagram showing the cooperation between the knob mechanism and a pressing switch (in inflated state);

[0031] FIG. 10 is a schematic diagram showing the cooperation between the knob mechanism and the pressing switch (in stopped state);

[0032] FIG. 11 is a schematic diagram of the present invention in inflated state;

[0033] FIG. 12 is a schematic diagram of the present invention in deflated state; and

[0034] FIG. 13 is a schematic diagram of the present invention in stopped state.

DESCRIPTION OF THE EMBODIMENTS

[0035] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described below with reference to the accompanying drawings. As shown in FIGS. 1 to 4, a single-knob air pump includes a housing comprising a wire slot accommodating chamber 101 and an assembly accommodating chamber 102; the housing includes a housing base 110 and a panel 120 provided with a detachable cover plate 130 corresponding to the wire slot accommodating chamber 101; and first air inlets/outlets 121 corresponding to the assembly accommodating chamber 102 are arranged on the panel 120, and a second air inlet/outlet 111 is arranged on the housing base 110. A gap 103 is provided between the wire slot accommodating chamber 101 and the assembly accommodating chamber 102, and the cover plate 130 is in non-sealing contact with the panel 120 so that air can flow through the gap, as shown by the arrow b in FIG. 11 and arrow e in FIG. 12.

[0036] As shown in FIGS. 3 to 5, an air extracting mechanism is arranged in the housing, which includes a motor 230 and fan blades 220. The fan blades 220 of the air extracting mechanism are arranged in a fan blade chamber 210 provided with an air inlet 211 and an air outlet 212.

[0037] As shown in FIGS. 1 to 8, an air channel switching mechanism 300 is arranged near the fan blade chamber 210 and is provided with an air inlet 301 and an air outlet 302; the air outlet 302 of the air channel switching mechanism 300 is provided with a V-shaped structure 320 including a first inclined plane 321 and a second inclined plane 322.

[0038] As shown in FIG. 7 and FIG. 8, the air channel switching mechanism 300 is operatively connected to a knob mechanism 600 which can control the displacement of the air channel switching mechanism 300; the knob mechanism 600 includes an air channel switching paddle 630 which is rotatably arranged, a knob 610 is connected to the front surface of the air channel switching paddle 630 through a link rod 620, and a blocking rod 640 is arranged on the back surface thereof; and a sliding slot 310 is arranged on the air channel switching mechanism 300, and the blocking rod 640 is embedded in the sliding slot 310. As shown in FIG. 9, a pressing switch 700 that can control the operation of the motor is arranged near the air channel switching paddle 630; the edge of the air channel switching paddle 630 is provided with a contact portion for an inflated state 631, a contact portion for a deflated state 633 and a non-contact portion for a stopped state 632 between the contact portion for an inflated state and the contact portion foe a deflated state (as shown in FIG. 10, in the stopped state, the non-contact portion for stopped state 632 is separated from the pressing switch 700 to turn off the circuit).

[0039] As shown in FIGS. 2 and 4, the second air inlet/outlet 111 is provided with an air valve mechanism 500 capable of closing or opening the second air inlet/outlet 111, an ejector rod mechanism 400 capable of closing or opening the second air inlet/outlet through the air valve mechanism under the action of the air channel switching mechanism is arranged between the air valve mechanism 500 and the air channel switching mechanism 300. The ejector rod mechanism 400 includes a first ejector rod 410 and a second ejector rod 420 intersecting with each other, a pair of guide slots 401 are arranged in the housing, two ends of the second ejector rod 420 are embedded in the guide slots 401, one end of the first ejector rod 410 can abut the first inclined plane 321 or the second inclined plane 322 of the air channel switching mechanism, and the other end can operate the air valve mechanism 500.

[0040] The air valve mechanism 500 includes a breathable mesh cover 510 arranged on the second air inlet/outlet 111, and a seal assembly capable of being compressed or reset by the ejector rod mechanism 400 is arranged in the mesh cover 510; the seal assembly includes a platen 520 arranged in the mesh cover, the platen 520 is provided with a seal ring 530 which can be used for sealing and a guide rod 521 which can penetrate the mesh cover, and a spring 540 is sleeved outside the guide rod, between the platen and the mesh cover.

[0041] FIG. 11 shows the inflated state of the present invention, the knob mechanism is rotated, and the contact portion for an inflated state 631 of the air channel switching paddle 630 is brought into contact with the pressing switch 700 to turn on the circuit; at the same time, the air channel switching mechanism 300 moves downwards under the action of the blocking rod 640, so that the air inlet 301 of the air channel switching mechanism is brought into contact with and is communicated with the air outlet 212 of the fan blade chamber, the first inclined plane 321 of the air channel switching mechanism operates an end of the first ejector rod 410, and the other end of the first ejector rod 410 operates the air valve mechanism 500 with the guiding of the second ejector rod; and the platen 520 of the air valve mechanism is compressed toward the mesh cover 510, and the second air inlet/outlet 111 is opened, thus carrying out inflating. The flow of the air in inflation is shown by arrows in FIG. 11, an arrow a indicates that the air flow enters the wire slot accommodating chamber from a gap between the cover plate and the panel, an arrow b indicates that the air flow enters the assembly accommodating chamber from a gap between the wire slot accommodating chamber and the assembly accommodating chamber, an arrow c indicates that the air flow collected in the assembly accommodating chamber will enter the fan blade chamber from the air inlet of the fan blade chamber, and an arrow d indicates that the air flow enters the assembly accommodating chamber from the first inlet/outlet.

[0042] FIG. 12 shows the deflated state of the present invention, the knob mechanism is rotated, and the contact portion for a deflated state 633 of the air channel switching paddle 630 is brought into contact with the pressing switch 700 to turn on the circuit; at the same time, the air channel switching mechanism 300 moves upwards under the action of the blocking rod 640, so that the air inlet 301 of the air channel switching mechanism is not brought into contact with and is not communicated with the air outlet 212 of the fan blade chamber, the second inclined plane 322 of the air channel switching mechanism 300 operates an end of the first ejector rod 410, and the other end of the first ejector rod 410 operates the air valve mechanism 500 with the guiding of the second ejector rod 420; and the platen 520 of the air valve mechanism is compressed toward the mesh cover 510, and the second air inlet/outlet 111 is opened, thus carrying out deflating. The flow of the air in deflation is shown in FIG. 12, an arrow e indicates that the air flow enters the wire slot accommodating chamber from the assembly accommodating chamber through the gap and then is discharged through the gap between the cover plate and the panel; an arrow f indicates that the air flow exits from the outlet of the fan blade chamber and then is discharged through the first air inlet/outlet on the panel.

[0043] The above embodiment is only a specific implementation of the present invention. Although the descriptions thereof are specific and detailed, they should not be construed as a limitation of the scope of the present invention. It should be noted that for a person of ordinary skill in the art, several variations and improvements may be made without departing from the spirit of the present invention. These obvious alternatives are intended to be included in the scope of protection of the present invention.