Knob reversing air pump

Abstract

The utility model aims at providing a knob type reversing air pump, it includes pump shell, pump valve and reversing component, is set up in the pump cavity with pump cavity intercommunication's first air hole and second air hole on the outside wall of pump shell, and pump valve includes valve frame, elastic part and valve sheet, valve frame slidingly is established on the outside end of first air hole, valve sheet sets up on the side surface of valve frame close to first air hole, and elastic part respectively with valve frame and pump shell abuts, and elastic part is used for pushing valve frame to drive valve sheet to block first air hole, and reversing component includes knob, reversing seat and fan, and is set up in the air duct of the through shape on reversing seat, and reversing seat rotationally sets up in the pump cavity, and fan sets up in the air duct, and knob is connected with reversing seat, and part structure of knob extends to the outside wall of pump shell, and knob is used for force to drive reversing seat to rotate, makes reversing seat push valve frame, and makes one of both ends of air duct intercommunication with first air hole.

Description

Technical Field

[0001] This utility model relates to the technical field of air pumps, and in particular to a knob-type reversing air pump. Background Technology

[0002] An air pump is a device used to move gas, which can remove air from a closed space or add air to a closed space.

[0003] With the widespread use of inflatable products such as inflatable mats, air pumps used for inflating and deflating these products have seen significant development.

[0004] For example, Chinese patent document CN119333363A discloses a knob-type air pump for inflation and deflation, which includes a pump housing with an inner cavity, an inflation / deflation port for connecting with an inflatable product on the front side of the pump housing, an air inlet / outlet port communicating with the external environment, and a knob on the top side of the pump housing; a one-way valve including a valve seat and a valve core disposed in the inflation / deflation port; the rear end of the valve core passes through the valve seat, and a diaphragm is installed at the front end; the valve core has the freedom to move back and forth relative to the valve seat; the diaphragm is used to open the inflation / deflation port when the valve core moves forward, or to close the inflation / deflation port when the valve core moves backward. The system comprises: an inlet; a mounting bracket fixed to the inner cavity of the pump housing; a blower assembly fixed to the mounting bracket to provide power for airflow; a rotary reversing assembly for switching the direction of airflow, thereby enabling inflation or deflation using the blower assembly; the rotary reversing assembly includes a rotary reversing block connected to a knob; and a connecting rod, one end of which is hinged to the eccentric part of the rotary reversing block, and the other end of which is hinged to the rear end of the valve core. The connecting rod, driven by the rotating end, pulls the valve core backward to close the diaphragm, thus shutting down the pump; or pushes the valve core forward to open the diaphragm, thus initiating inflation or deflation. Thus, the rotary reversing block rotates under the force of the knob, changing the connection between the first and second flow channels of the rotary reversing block and the outlet and inlet ends of the blower assembly's airflow channel, thereby changing the pump's inflation or deflation state.

[0005] However, the existing air pumps have overly complex internal structures. On the one hand, they have too many parts, requiring the development of a mold for each part, leading to excessive manufacturing costs. On the other hand, the large number of parts also results in excessive assembly time, making assembly cumbersome. To address these shortcomings, this application proposes a compact rotary reversing air pump. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a knob-type reversing air pump with a simple and compact structure and a single knob for adjusting the air pump inflation and deflation.

[0007] The objective of this utility model is achieved through the following technical solution: A rotary reversing air pump, comprising: A pump casing, wherein a pump chamber is provided inside the pump casing, and a first air inlet and a second air inlet communicating with the pump chamber are provided on the outer side wall of the pump casing; A pump valve, comprising a valve frame, an elastic element, and a valve plate, wherein the valve frame is slidably disposed on the outer end of the first air outlet, the valve plate is disposed on the side of the valve frame near the first air outlet, and the elastic element abuts against both the valve frame and the pump housing, the elastic element being used to push against the valve frame to drive the valve plate to block the first air outlet; and A reversing assembly includes a knob, a reversing seat, and a fan. The reversing seat has a through-type air duct and is rotatably disposed within the pump chamber. The fan is disposed within the air duct. The knob is connected to the reversing seat, and a portion of the knob extends to the outer wall of the pump housing. When the knob is subjected to force to rotate the reversing seat, the reversing seat pushes against the valve frame, and one of the two ends of the air duct communicates with the first air outlet.

[0008] Optionally, the reversing assembly further includes a bearing disposed on the inner bottom wall of the pump chamber, and the reversing seat is disposed on the bearing.

[0009] Optionally, a hood is provided on the outer wall of the first air outlet, and the valve frame is slidably disposed within the hood.

[0010] Optionally, the valve frame is provided with a top block, and the outer side wall of the reversing seat is provided with an arc-shaped groove. The top block is used to abut against the outer side wall of the reversing seat or the arc-shaped groove.

[0011] Optionally, two top blocks are provided, and the two top blocks are respectively located on opposite sides of the valve frame.

[0012] Optionally, a slot is provided on one end face of the reversing seat near the knob, and the end of the knob near the reversing seat is adapted to be inserted into the slot.

[0013] Optionally, the pump housing includes a bottom shell and a cover, the cover being fastened to the bottom shell, the first air outlet being located on the bottom shell, the second air outlet being located on the cover, and the knob being rotatably connected to the cover.

[0014] Optionally, the pump housing further includes a partition block disposed within the bottom housing, and the cover is fastened to the partition block.

[0015] Optionally, a circuit board is provided on the partition, a switch is provided on the circuit board, the fan is electrically connected to the circuit board, and when the knob is rotated under force, the knob presses the switch.

[0016] Optionally, a soft rubber portion is provided on the edge of the top surface of the bottom shell.

[0017] Compared with the prior art, the present invention has at least the following advantages: This utility model discloses a rotary reversing air pump, comprising a pump housing, a pump valve, and a reversing assembly. The pump housing contains a pump chamber, and the outer wall of the pump housing has a first air inlet and a second air inlet communicating with the pump chamber. The pump valve includes a valve frame, an elastic element, and a valve plate. The valve frame is slidably mounted on the outer end of the first air inlet, and the valve plate is mounted on the side of the valve frame closest to the first air inlet. The elastic element abuts against both the valve frame and the pump housing, and is used to push the valve frame to cause the valve plate to block the first air inlet. The reversing assembly includes a knob, a reversing seat, and a fan. The reversing seat has a through-type air duct, which is rotatably mounted within the pump chamber. The fan is mounted within the air duct. The knob is connected to the reversing seat, and part of the knob's structure extends to the outer wall of the pump housing. When the knob is subjected to force to rotate the reversing seat, the reversing seat pushes against the valve frame, and one of the two ends of the air duct communicates with the first air inlet. Thus, by changing the orientation of the reversing seat with a single knob, the air pump's inflation and deflation states can be altered. The structure is simple and compact, with fewer assembled parts, resulting in lower manufacturing costs and easier assembly. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a knob-type reversing air pump according to one embodiment of the present invention; Figure 2 for Figure 1 The diagram shows the exploded structure of a rotary reversing air pump. Figure 3 for Figure 1 The diagram shows the structure of the reversing seat and pump valve of the rotary reversing air pump when it is in the off state. Figure 4 for Figure 1 The diagram shows the structure of the reversing seat and pump valve when the rotary reversing air pump is in the pumping state. Figure 5 for Figure 1 The diagram shows the structure of the reversing seat and pump valve of the rotary reversing air pump when it is in the inflation state. Figure 6This is a partial structural diagram of a pump valve according to one embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures: 10. Knob-type reversing air pump; 100. Pump housing; 200. Pump valve; 300. Reversing assembly; 110. Pump chamber; 120. First air outlet; 130. Second air outlet; 210. Valve frame; 220. Elastic element; 230. Valve plate; 310. Knob; 320. Reversing seat; 330. Fan; 321. Air duct; 340. Bearing; 240. Air cover; 250. Top block; 322. Arc-shaped groove; 323. Slot; 101. Bottom shell; 102. Cover; 103. Partition; 350. Circuit board; 311. Step groove; 104. Soft rubber part; 312. Tightening part; 313. Locking post. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0022] like Figures 1 to 6 As shown, a rotary reversing air pump 10 includes a pump housing 100, a pump valve 200, and a reversing assembly 300. The pump housing 100 has a pump chamber 110. A first air inlet 120 and a second air inlet 130 communicating with the pump chamber 110 are provided on the outer wall of the pump housing 100. The pump valve 200 includes a valve frame 210, an elastic element 220, and a valve plate 230. The valve frame 210 is slidably disposed on the outer end of the first air inlet 120. The valve plate 230 is disposed on the side of the valve frame 210 near the first air inlet 120. The elastic element 220 abuts against both the valve frame 210 and the pump housing 100, and is used to push the valve frame. 210 drives the valve plate 230 to block the first air outlet 120. The reversing assembly 300 includes a knob 310, a reversing seat 320 and a fan 330. The reversing seat 320 has a through-shaped air duct 321. The reversing seat 320 is rotatably set in the pump chamber 110. The fan 330 is set in the air duct 321. The knob 310 is connected to the reversing seat 320. Part of the structure of the knob 310 extends to the outer wall of the pump housing 100. When the knob 310 is subjected to force to drive the reversing seat 320 to rotate, the reversing seat 320 pushes the valve frame 210, and one of the two ends of the air duct 321 is connected to the first air outlet 120.

[0023] It should be noted that the first air vent 120 is used to connect with the interior of the inflatable product, and the second air vent 130 is used to connect with the outside. When the blower 330 is started, it causes the gas to flow directionally within the air duct 321, so that the two ends of the air duct 321 form the air inlet and air outlet respectively. Thus, when the knob 310 is subjected to force to drive the reversing seat 320 to rotate, so that the air inlet of the air duct 321 connects with the first air vent 120, the reversing seat 320 will push the valve frame 210, so that the valve frame 210 drives the valve plate 230 away from the first air vent 120, and the first air vent 120 is in the open state. At this time, the gas flow path is as follows: interior of the inflatable product, first air vent 120, air duct 321, pump chamber 110, second air vent 130, outside. At this time, the knob-type reversing air pump 10 is in the air pumping working state. When the knob 310 is subjected to force to rotate the reversing seat 320, causing the air outlet of the air duct 321 to connect with the first air outlet 120, the reversing seat 320 will still push the valve frame 210, causing the valve frame 210 to move the valve plate 230 away from the first air outlet 120. The first air outlet 120 is in the open state, and the gas flow path is as follows: outside, second air outlet 130, pump chamber 110, air duct 321, first air outlet 120, inside the inflated product. At this time, the knob-type reversing air pump 10 is in the inflation working state. Thus, compared with the existing knob-type air pumps, the knob-type reversing air pump 10 proposed in this application can change the inflation working state and the evacuation working state of the air pump by changing the direction and posture of the reversing seat 320 with a single knob 310. The structure is simple and compact, with fewer assembled parts, so the manufacturing cost is lower and it is easy to assemble and manufacture.

[0024] like Figures 2 to 5 As shown, in one embodiment, the reversing assembly 300 further includes a bearing 340, which is disposed on the inner bottom wall of the pump chamber 110, and the reversing seat 320 is disposed on the bearing 340.

[0025] It should be noted that, in order to improve the smoothness of the rotation of the reversing seat 320 and ensure that the air inlet / outlet of the air duct 321 can be accurately aligned with the first air outlet 120, a bearing 340, such as a conventional ball bearing 340, is installed on the inner bottom wall of the pump chamber 110. In one embodiment, to improve the stability of the bearing 340, an annular groove adapted to the bearing 340 is provided on the inner bottom wall of the pump chamber 110. The bearing 340 is embedded and fixed in the annular groove, thereby improving the stability of the bearing 340 installed on the inner bottom wall of the pump chamber 110.

[0026] like Figures 1 to 5 As shown, in one embodiment, a hood 240 is provided on the outer wall of the first air outlet 120, and a valve bracket 210 is slidably disposed inside the hood 240.

[0027] It should be noted that the fan cover 240 has a hollow structure. The fan cover 240 is screwed and installed on the outer wall of the pump housing 100 located on the first air outlet 120. A guide post is provided on the fan cover 240 coaxially with the first air outlet 120. Part of the valve frame 210 is adapted to pass through the guide post, so that the valve frame 210 and the first air outlet 120 are also installed coaxially. The valve plate 230 is fixedly installed on the side of the valve frame 210 near the first air outlet 120. The valve plate 230 is made of soft materials such as silicone or rubber. The elastic element 220 is a helical spring. The elastic element 220 is sleeved on the outer wall of the guide post, and the elastic element 220 abuts against both the fan cover 240 and the valve frame 210, so that the elastic element 220 pushes against the valve frame 210, thereby making the valve plate 230 tightly fit against the outer wall of the first air outlet 120 to seal the first air outlet 120.

[0028] like Figures 3 to 6 As shown, in one embodiment, a top block 250 is provided on the valve frame 210, and an arc-shaped groove 322 is provided on the outer side wall of the reversing seat 320. The top block 250 is used to abut against the outer side wall or the arc-shaped groove 322 of the reversing seat 320.

[0029] It should be noted that when the reversing seat 320 is rotated, so that the air inlet or outlet of the air duct 321 is connected to the first air outlet 120, the reversing seat 320 can also push the valve frame 210 to ensure that the valve plate 230 is reliably moved away from the first air outlet 120 to open it. Therefore, an integrally formed top block 250 is provided on the valve frame 210, and an arc-shaped groove 322 with a continuous curvature is provided on the reversing seat 320. The top block 250 extends into the first air outlet 120 to fit into the arc-shaped groove 322. At this time, the inner sidewall of the arc-shaped groove 322 does not contact the top block 250. Therefore, the elastic element 220 pushes the valve frame 210, so that the valve plate 230 seals the first air outlet 120. When the reversing seat 320 rotates, the top block 250 is no longer located within the arc-shaped groove 322, but is instead abutted against by the outer wall of the reversing seat 320. Therefore, the outer wall of the reversing seat 320 holds the top block 250, causing the valve bracket 210 to move the valve plate 230 away from the first air vent 120, thus opening it. In this way, by rotating the reversing seat 320 via the knob 310, the air pump's charging or evacuating operation can be changed, while simultaneously opening the first air vent 120. The structure is simple, compact, and easy to use.

[0030] like Figure 6 As shown, in one embodiment, two top blocks 250 are provided, and the two top blocks 250 are located on opposite sides of the valve frame 210.

[0031] It should be noted that the two top blocks 250 are located on opposite sides of the axis of the valve frame 210, and the two top blocks 250 are located on the same end face of the valve frame 210. Correspondingly, an arc-shaped groove 322 is provided on the same side of the upper and lower end faces of the reversing seat 320. When the two top blocks 250 are respectively located in the two arc-shaped grooves 322, the inner sidewall of the arc-shaped groove 322 does not hold the top block 250, so that the elastic element 220 pushes the valve frame 210 to drive the valve plate 230 to fit tightly against the first air outlet 120 for sealing. When the reversing seat 320 is rotated by the knob 310, the top blocks 250 slide away from the two arc-shaped grooves 322 at the same time. Finally, the outer sidewall of the reversing seat 320 abuts against the two top blocks 250, so that the valve frame 210 is pushed, the elastic element 220 is compressed, the valve plate 230 moves away from the first air outlet 120, and the first air outlet 120 is opened. Thus, by setting two top blocks 250, the balance of the valve frame 210 when sliding relative to the shroud 240 can be improved, thereby ensuring that the valve plate 230 can reliably and completely disengage from the outer end of the first air outlet 120, or reliably fit and seal the first air outlet 120 under the pushing of the elastic member 220. Further, in one embodiment, an arc-shaped groove 322 is respectively opened on the opposing sides of the two end faces of the reversing seat 320, so a total of four arc-shaped grooves 322 are opened on the reversing seat 320.

[0032] like Figure 2 As shown, in one embodiment, a slot 323 is provided on one end face of the reversing seat 320 near the knob 310, and the end of the knob 310 near the reversing seat 320 is adapted to be inserted into the slot 323.

[0033] It should be noted that, in order for the knob 310 to reliably drive the reversing seat 320 to rotate, a slot 323 is provided on the top surface of the reversing seat 320, and the knob 310 is fitted into the slot 323. For example, the slot 323 can be a polygonal slot structure, such as a square structure. Correspondingly, the knob 310 is used to insert into the slot 323 in a polyhedral structure, such as a prism structure with a square cross-section, so that the polyhedral structure of the knob 310 is fitted into the slot 323 for locking and fixing. In this way, the locking and fixing is achieved by using a non-rotating structure, which can eliminate the use of fasteners such as screws, further reducing the manufacturing cost of the air pump and simplifying the assembly process.

[0034] like Figure 2 As shown, in one embodiment, the pump housing 100 includes a bottom housing 101 and a cover 102. The cover 102 is fastened to the bottom housing 101. A first air vent 120 is located on the bottom housing 101, a second air vent 130 is located on the cover 102, and a knob 310 is rotatably connected to the cover 102.

[0035] It should be noted that, in order to facilitate the installation of the pump valve 200 and the reversing assembly 300 inside the pump housing 100, the pump housing 100 is configured with a structure in which the bottom shell 101 and the cover 102 are fastened together. Specifically, an open slot is provided in the bottom shell 101. After the pump valve 200 and the reversing assembly 300 are installed in the open slot, the cover 102 is fastened onto the bottom shell 101, so that the screwing part of the knob 310 protrudes from the surface of the cover 102.

[0036] like Figure 2 As shown, in one embodiment, the pump housing 100 further includes a partition block 103, which is disposed inside the bottom housing 101, and the cover 102 is fastened to the partition block 103. A circuit board 350 is disposed on the partition block 103, and a switch is disposed on the circuit board 350. The fan 330 is electrically connected to the circuit board 350. When the knob 310 is rotated under force, the knob 310 presses the switch.

[0037] It should be noted that the start and stop of the fan 330 are controlled by the circuit board 350. To facilitate the installation and fixation of the circuit board 350, the spacer 103 is installed horizontally inside the bottom shell 101, and then the circuit board 350 is installed on the spacer 103. The reversing seat 320 passes through the spacer 103 and the circuit board 350 in sequence and then protrudes from the surface of the cover 102. It should be noted that the knob 310 is provided with a stepped groove 311 near the cover 102, and the stepped groove 311 engages with the cover 102. In this way, it can be ensured that the knob 310 is engaged with the cover 102, and the knob 310 can rotate relative to the cover 102, but will not protrude from the cover 102. Furthermore, in one embodiment, in order to further improve the rotational stability of the reversing seat 320, another bearing is added at the position where the reversing seat 320 passes through the spacer 103 for rotational connection.

[0038] like Figure 1 and Figure 2 As shown, in one embodiment, a soft rubber portion 104 is provided on the edge of the top surface of the bottom shell 101. Specifically, the soft rubber portion 104 is distributed around the top surface of the bottom shell 101, and for example, the soft rubber portion 104 is made of rubber. In one embodiment, the bottom shell 101 and the soft rubber portion 104 are integrally injection molded. In this way, the soft rubber portion 104 can be used to easily heat-seamlessly fix the knob-type reversing air pump 10 of this application onto the inflatable product, achieving the purpose of reliable installation.

[0039] like Figure 2 As shown, in one embodiment, the knob 310 includes a screwing part 312 and a locking pin 313. The locking pin 313 is disposed on the bottom side of the screwing part 312 and is adapted to be inserted into the locking groove 323. The stepped groove 311 is located on the screwing part 312. For example, the locking pin 313 and the screwing part 312 can be locked and fixed by screws.

[0040] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. Unless otherwise specifically defined, the installation / fixing / setting mentioned in this utility model can be understood as including, but not limited to, locking and fixing with screws / bolts, welding, or bonding with adhesives, wherein the adhesives used can be commercially available finished products. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A rotary reversing air pump, characterized in that, include: A pump casing, wherein a pump chamber is provided inside the pump casing, and a first air inlet and a second air inlet communicating with the pump chamber are provided on the outer side wall of the pump casing; A pump valve, comprising a valve frame, an elastic element, and a valve plate, wherein the valve frame is slidably disposed on the outer end of the first air outlet, the valve plate is disposed on the side of the valve frame near the first air outlet, and the elastic element abuts against both the valve frame and the pump housing, the elastic element being used to push against the valve frame to drive the valve plate to block the first air outlet; and A reversing assembly includes a knob, a reversing seat, and a fan. The reversing seat has a through-type air duct and is rotatably disposed within the pump chamber. The fan is disposed within the air duct. The knob is connected to the reversing seat, and a portion of the knob extends to the outer wall of the pump housing. When the knob is subjected to force to rotate the reversing seat, the reversing seat pushes against the valve frame, and one of the two ends of the air duct communicates with the first air outlet.

2. The rotary reversing air pump according to claim 1, characterized in that, The reversing assembly further includes a bearing, which is disposed on the inner bottom wall of the pump chamber, and the reversing seat is disposed on the bearing.

3. The rotary reversing air pump according to claim 2, characterized in that, A hood is provided on the outer wall of the first air outlet, and the valve frame is slidably disposed inside the hood.

4. The rotary reversing air pump according to claim 1, characterized in that, The valve frame is provided with a top block, and the outer side wall of the reversing seat is provided with an arc-shaped groove. The top block is used to abut against the outer side wall of the reversing seat or the arc-shaped groove.

5. The rotary reversing air pump according to claim 4, characterized in that, There are two top blocks, which are located on opposite sides of the valve frame.

6. The rotary reversing air pump according to claim 1, characterized in that, A slot is provided on one end face of the reversing seat near the knob, and the end of the knob near the reversing seat is adapted to be inserted into the slot.

7. The rotary reversing air pump according to claim 1, characterized in that, The pump housing includes a bottom shell and a cover. The cover is fastened to the bottom shell. The first air outlet is located on the bottom shell, and the second air outlet is located on the cover. The knob is rotatably connected to the cover.

8. The rotary reversing air pump according to claim 7, characterized in that, The pump housing also includes a partition block, which is disposed inside the bottom shell, and the cover is fastened to the partition block.

9. The rotary reversing air pump according to claim 8, characterized in that, A circuit board is provided on the partition, and a switch is provided on the circuit board. The fan is electrically connected to the circuit board. When the knob is rotated under force, it presses the switch.

10. The rotary reversing air pump according to claim 7, characterized in that, A soft rubber part is provided on the edge of the top surface of the bottom shell.

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