Knob type double-hole inflating and deflating device

Abstract

A knob type double-hole inflating and deflating device relates to the technical field of air cushion air pumps, mainly solves the problems of single function, complicated structure, poor air tightness, low inflating and deflating speed and easiness in mistaken touch of an air pump in the prior art, and is provided with a clamping hook and a fixing groove for locking a rotary pump core in a rubber-coated bottom shell. The relative position between the rotary pump core and the rubber-coated bottom shell can be adjusted, one of the inflating port, the exhaust port and the sliding groove is aligned with an elastic valve arranged on the rubber-coated bottom shell, and when the inflating port and the exhaust port are aligned with the elastic valve, the bottom of the shell can extrude the elastic valve to be far away from the bottom of the rubber-coated bottom shell, so that airflow can pass through the elastic valve to press the elastic valve; when the sliding groove is aligned with the elastic valve, the middle of the sliding groove is a space for avoiding the elastic valve, so that the elastic valve is still in a closed state, airflow cannot pass through the elastic valve, the bottom of the rubber bottom shell is still in a closed state, and air in the inflatable product is locked.

Description

Technical Field

[0001] This utility model relates to the field of air cushion and air pump technology, specifically a knob-type dual-hole inflation and deflation device. Background Technology

[0002] An air pump is a device that removes or adds air to a closed space. Most existing air pumps are one-piece designs and cannot be disassembled. Disassembling a detachable air pump is cumbersome, and the airtightness cannot be guaranteed after disassembly. Moreover, in existing technologies, the air cushion has a separate opening for venting. The air pump can only inflate and cannot assist in the venting process. Existing air pumps have limited functions and do not have a shift indicator. Users need to try multiple times to use the air pump accurately. Therefore, to solve the problems of existing technologies, it is necessary to design a detachable, more functional, airtight, and simple and quick disassembly and restoration knob-type dual-hole inflation and deflation device. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing technology and provide a one-hole inflation / deflation air pump. This inflation / deflation device includes a hook and a fixing groove to lock the rotating pump core within a rubber-coated base. The user can adjust the relative position between the rotating pump core and the rubber-coated base by moving the pump core, aligning one of the air inlet, air outlet, or slide groove with a resilient valve on the rubber-coated base. This allows for different pressure settings. When the air inlet (inflate setting) or air outlet (deflate setting) is aligned with the resilient valve, the bottom of the outer shell will compress the resilient valve, moving it away from the bottom of the rubber-coated base, allowing airflow to pass through. When the slide groove (o... When the FF position is aligned with the elastic valve, the middle of the slide groove avoids the space of the elastic valve, keeping the elastic valve closed. Airflow cannot pass through the elastic valve, and the bottom of the rubber base remains sealed, locking the air inside the inflated product. To inform the user, a hemispherical shape is provided at the top of the valve pressure plate, which can slide into the positioning groove and produce a segmented feel. The segmented feel provides feedback to the user, letting them know that the rotary pump core 3 has entered a specific position. A pointer is provided at the front end of the hook. When the pointer slides into the pointer groove, it also produces a segmented feel. It has the advantages of simple installation, convenient use, and clear perception of the state of the rotary pump core. It also adopts a dual-motor design, making inflation and deflation faster.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A knob-type dual-hole inflation / deflation device includes a rubber-coated base shell, which is mounted on an inflatable product. The bottom wall of the base shell has an elastic valve with an automatic reset function. Under no thrust, the elastic valve is closed, sealing the bottom of the inflatable product. A rotary pump core is built into the base shell and is detachable. The bottom of the pump core has an air inlet, an air outlet, and a groove. The groove provides space for the elastic valve, keeping it closed. Airflow generated by the pump core is injected into the inflatable product through the air inlet, and air inside the product is expelled through the air outlet. A rotating handle is located on the top surface of the pump core. When the handle is subjected to external force (i.e., fingers pinching the handle and rotating the hand), the pump core rotates around the axis of the base shell. The contact position between the elastic valve and the bottom of the rotary pump core changes. When the elastic valve is in the middle of the slide groove, it is closed, and the rubber-coated bottom shell is in a sealed state. When the elastic valve is disengaged from the middle of the slide groove, it opens, and the rubber-coated bottom shell is in a ventilated state. At this time, if the air inlet is aligned with the elastic valve, airflow can be injected into the inflatable product. If the exhaust outlet is aligned with the elastic valve, the airflow in the inflatable product can be quickly discharged. The rotary pump core is provided with a hook to restrict the rotary pump core from exiting the rubber-coated bottom shell. The hook is connected to the elastic element. The side wall of the rubber-coated bottom shell is provided with a fixing groove for the hook to be inserted. After the hook is inserted into the fixing groove, the rotary pump core can only rotate in the rubber-coated bottom shell and cannot be disengaged. The rotary pump core is provided with an inflation / deflation module, which realizes the inflation function of the inflatable product and also has a suction effect.

[0006] In one embodiment, the rotary pump core has a panel cover and a housing. The rotary lever is located in the middle of the panel cover to facilitate the rotation of the entire rotary pump core. The side of the rotary lever has a slot for the hook to pass through. The hook passes through the slot and enters the fixing slot. The hook is F-shaped and has a pressure plate in the middle. The pressure plate is used to press down and retract the hook with a finger. The tail is hook-shaped and can be placed in the fixing slot. An elastic element is connected to the back of the pressure plate. The elastic element provides outward elastic force so that the hook cannot be disengaged from the fixing slot when no external force is applied. The elastic element has a locking post, a first spring, a fixing frame and a buckle plate. The fixing frame is set on the buckle plate and has a groove. The locking post is placed on the groove. The first spring is set on the outer side of the side wall of the locking post.

[0007] In one embodiment, the bottom surface of the rubber-coated base shell and the bottom surface of the rotary pump core are not attached to each other, forming an airflow cavity. The side of the shell is provided with an airflow channel that runs through the entire shell and is connected to the airflow cavity. The panel cover is provided with an air groove, which provides a protective effect and can isolate foreign objects. The panel cover is also provided with a control circuit board with a sensor. The rubber-coated base shell is provided with a magnetic strip that can be sensed by the sensor. When the sensor is aligned with the magnetic strip, the rotary pump core can be triggered to execute a preset command. The lower end of the control circuit board is provided with a battery pack to provide power to the rotary pump core. The charging and discharging module is located at the lower end of the snap-fit ​​pressure plate, dividing the shell into upper and lower parts. The charging and discharging module is provided with an impeller, which is clamped by the motor seat and the motor cover to isolate foreign objects and protect the impeller. The impeller is connected to the motor, which is mounted on the side wall of the motor seat.

[0008] In one embodiment, the bottom of the rubber-coated base shell is provided with an annular column for ventilation. The height of the airflow chamber is the same as that of the annular column. The elastic valve is installed on the annular column. The bottom of the elastic valve is cap-shaped and can completely cover the bottom of the annular column. When the elastic valve is closed, the inflatable product is in a sealed state. When the elastic valve is open, airflow can flow into / out of the inflatable product through the annular column. A through column is provided in the middle of the annular column. The elastic valve is placed in the through column and is limited by the through column. It can only slide laterally along the central axis of the through column.

[0009] In one embodiment, the elastic valve includes a valve plate, valve claws, and a second spring. The valve plate is inverted T-shaped with a disc at the bottom and a cylindrical shape in the middle. The cylindrical body is located in a through-column and can only slide laterally along the central axis of the through-column to achieve the effect of closing / opening the annular column. The annular column has a concave ring for placing a sealing ring. The sealing ring is elastic and can fit tightly against the air inlet and outlet, effectively enhancing the airtightness between the air inlet / outlet and the annular column, thus isolating the air inlet / outlet from the airflow cavity after fitting. The top of the valve plate has a valve claw, and the valve claw holds the second spring between itself and the annular column. The second spring provides power for the movement of the valve plate, allowing it to fit tightly against the bottom of the annular column when no external force is applied, making the inflatable product airtight.

[0010] In one embodiment, the front and rear sides of the rotary handle are provided with slots for the hooks to pass through. Two hooks and elastic elements are provided, mirror-distributed on the front and rear sides of the rotary handle, and in a straight line shape for easy clamping. There are two air inlets, two air outlets, and two slide grooves, which are arranged in a circular array at the bottom of the outer shell. The two air inlets, two air outlets, and two slide grooves are mirror-symmetrical. The slide groove is trapezoidal and concave, which facilitates the tail of the valve pressure plate to slide into / out of the slide groove, making the rotary pump core rotate smoothly.

[0011] In one embodiment, two inflation / deflation modules are provided. An extension plate is provided at the bottom of the snap-fit ​​plate, and an inflation / deflation module one is provided on the extension plate. The inflation / deflation module one is directly attached to one of the air inlets. The extension plate can ensure that the inflation / deflation module one is stably attached to the air inlet. An extended air channel is provided on the inner wall of the outer shell. The extended air channel is attached to the other air inlet. An inflation / deflation module two is provided on the extended air channel. The airflow generated by the inflation / deflation module two enters the inflatable product after passing through the extended air channel. The dual inflation / deflation module design doubles the inflation and deflation efficiency.

[0012] In one embodiment, a positioning rod is provided in the middle of the bottom surface of the rubber-coated bottom shell, and an insertion post is provided in the middle of the bottom surface of the outer shell for inserting the positioning rod. The two cooperate with each other to further restrict the rotating pump core, so that it can only rotate on the axis of the positioning rod. Positioning grooves are provided at the center points of the air inlet, air outlet and slide groove. The top of the valve pressure plate is hemispherical, and the positioning groove allows the top hemispherical part of the valve pressure plate to be inserted. The insertion process will produce a segmented feeling, which makes it easy to accurately adjust the rotation angle of the rotating pump core.

[0013] In one embodiment, a pointer is provided at the front end of one of the hooks, the pointer protruding from the front end of the hook. A pointer slot is provided in the fixing groove for the pointer to be inserted. When the pointer is aligned with the pointer slot, the pointer is inserted into the pointer slot. A greater external force is required to make the pointer detach from the pointer slot. The position of the pointer slot is set according to different functions, and text markings are made on the pointer slot to facilitate the user to adjust the position of the rotating pump core and activate different functions.

[0014] In one embodiment, the rubber-coated bottom shell is provided with a plurality of magnetic strips that can be sensed by the sensor, and the magnetic strips are located at the lower end of the pointer slot. When the pointer is aligned with the pointer slot, the sensor can sense the magnetic strips. After the rotating pump core receives the signal from the sensor, it can activate different functions according to the signal, so as to achieve an automated effect and reduce user operation.

[0015] Beneficial effects

[0016] The bottom of the outer casing allows the flexible valve to be pushed outward, breaking the seal of the rubber-coated base shell and enabling inflation / deflation. A groove at the bottom of the casing accommodates the protruding part of the flexible valve; when the groove aligns with the valve, the rubber base shell remains sealed. This design provides three positions: inflating, deflating, and closed. Rotating a lever changes the position between the air pump core and the rubber-coated base shell, switching between positions. This provides a rotary switching effect. (The text also mentions air inlet and outlet, but these appear unrelated to the main design and are likely separate points.) The exhaust port and slide are designed with three intervals. Switching gears will change the connection between the air inlet, exhaust port and airflow chamber, so that the air inlet and outlet modules can accelerate the airflow during inflation and deflation. The rotating pump core is also equipped with a hook that can be inserted into the rubber-coated bottom shell. The front end of the hook is equipped with a pointer for the hook to be placed in the fixed groove. There are also pointer slots at the alignment of the air inlet, exhaust port, slide and elastic valve, so that users can distinguish different gears. It has the effect of prompting and preventing fooling. There are two air inlet and outlet modules, which makes the inflation / deflation efficiency higher. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0019] Figure 2 This is the second schematic diagram of the structure of this utility model;

[0020] Figure 3 This is the third schematic diagram of the structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the rotary pump core structure of this utility model;

[0022] Figure 5 This is a bottom view of the rotary pump core of this utility model;

[0023] Figure 6 This is an exploded view of the rotary pump core structure of this utility model;

[0024] Figure 7 This is a diagram showing the internal structure of the hook of this utility model in its natural state;

[0025] Figure 8 This is a diagram showing the internal structure of the hook of this utility model in the self-pressed state;

[0026] Figure 9This is one of the schematic diagrams of the internal structure of the rotary pump core of this utility model;

[0027] Figure 10 This is the second schematic diagram of the internal structure of the rotary pump core of this utility model;

[0028] Figure 11 This is a schematic diagram of the inflation / deflation module structure of this utility model;

[0029] Figure 12 This is an exploded view of the inflation / deflation module structure of this utility model;

[0030] Figure 13 This is one of the internal structural diagrams of the outer shell of this utility model;

[0031] Figure 14 This is the second internal structural diagram of the outer shell of this utility model;

[0032] Figure 15 This is a top view of the outer shell structure of this utility model;

[0033] Figure 16 This is one of the schematic diagrams of the rubber-coated bottom shell structure of this utility model;

[0034] Figure 17 This is an exploded view of the rubber-coated bottom shell structure of this utility model;

[0035] Figure 18 This is a schematic diagram of the elastic valve structure of this utility model;

[0036] Figure 19 This is an exploded view of the elastic valve structure of this utility model;

[0037] Figure 20 This is the second schematic diagram of the rubber-coated bottom shell structure of this utility model;

[0038] Figure 21 This utility model Figure 20 Enlarged view of point A;

[0039] Figure 22 This is the fourth schematic diagram of the structure of this utility model;

[0040] Figure 23 This utility model Figure 22 Sectional view at point AA;

[0041] Figure 24 This utility model Figure 23 Enlarged view of point B;

[0042] Figure 25 This is the fifth schematic diagram of the structure of this utility model;

[0043] Figure 26 This utility model Figure 25Sectional view at BB;

[0044] Figure 27 This utility model Figure 26 Enlarged view of point C;

[0045] Figure 28 This is a top view of the complete outer shell of this utility model being inserted into the rubber-coated bottom shell;

[0046] Figure 29 This utility model Figure 25 Sectional view at CC

[0047] Figure 30 This is a schematic diagram of the panel cover structure of this utility model.

[0048] In the diagram: 1. Rubber-coated bottom shell; 2. Elastic valve; 3. Rotary pump core; 4. Air inlet; 5. Exhaust outlet; 6. Slide groove; 7. Rotary handle; 8. Hook; 9. Elastic element; 10. Fixing groove; 11. Panel cover; 12. Outer shell; 13. Slot; 14. Pressure plate; 15. Locking post; 16. First spring; 17. Fixing bracket; 18. Snap-on pressure plate; 19. Airflow channel; 20. Air groove; 21. Control circuit board; 22. Battery pack; 23. Impeller; 24. Motor base; 25. Motor cover; 26. Motor; 27. Annular column; 28. Through column; 29. ​​Valve pressure plate; 30. Valve claw; 31. Second spring; 32. Sealing ring; 33. Concave ring; 34. Extension plate; 35. Inflation / depression module one; 36. Extension airway; 37. Inflation / depression module two; 38. Positioning rod; 39. Insertion post; 40. Positioning groove; 41. Pointer; 42. Pointer groove; 43. Airflow cavity. Detailed Implementation

[0049] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0050] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0052] Example

[0053] Please see Figure 1-30 A knob-type dual-hole inflation / deflation device includes a rubber-coated base shell 1, which is mounted on an inflatable product. The bottom wall of the base shell 1 is provided with an elastic valve 2. A rotary pump core 3 is internally located within the base shell 1. When the rotary pump core 3 is not inserted into the base shell 1, the elastic valve 2 is closed, and the inflatable product is sealed. The bottom of the rotary pump core 3 is provided with an air inlet 4, an air outlet 5, and a groove 6. The groove 6 provides space to accommodate the elastic valve 2. A rotary lever 7 is located on the top surface of the rotary pump core 3. When the handle 7 is subjected to external force, it can drive the rotary pump core 3 to rotate around the axis of the rubber-coated bottom shell 1, causing the contact position between the elastic valve 2 and the bottom of the rotary pump core 3 to change. When the elastic valve 2 is located in the middle of the slide groove 6, the elastic valve 2 is closed, and the rubber-coated bottom shell 1 is in a sealed state. When the elastic valve 2 is disengaged from the middle of the slide groove 6, the elastic valve 2 opens, and the rubber-coated bottom shell 1 is in a ventilated state. That is, when the air inlet 4 or the exhaust outlet 5 is rotated to align with the elastic valve 2, the elastic valve 2 can be opened to perform air pumping or exhausting operations. The rotary pump core 3 is provided with a hook 8 to prevent it from exiting the rubber-coated bottom shell 1. The hook 8 is connected to the elastic element 9. The side wall of the rubber-coated bottom shell 1 is provided with a fixing groove 10 for the hook 8 to be inserted. The rotary pump core 3 is provided with an inflation / deflation module. When it is necessary to inflate the product, the rotary pump core 3 is placed into the rubber-coated bottom shell 1, so that the hook 8 is engaged in the fixing groove 10. Then, the fingers pinch the rotary lever 7 to rotate the rotary pump core 3, aligning the air inlet 4 with the elastic valve 2, so that the elastic valve 2 opens, and the inflation / deflation is started. The air module generates airflow into the inflatable product. After inflation is complete, the rotary pump core 3 is driven to rotate again until the slide 6 is aligned with the elastic valve 2. At this point, the elastic valve 2 is closed, and the airflow cannot leave the inflatable product. The rotary pump core 3 can then be removed. When deflation is required, the rotary pump core 3 is inserted, and the exhaust port 5 is aligned with the elastic valve 2, causing the elastic valve 2 to open. The airflow can then flow out of the inflatable product through the exhaust port. Once deflation is complete, the rotary pump core 3 can be removed.

[0054] Preferably, the rotary pump core 3 is provided with a panel cover 11 and a housing 12. The rotary handle 7 is located in the middle of the panel cover 11. The side of the rotary handle 7 is provided with a slot 13 for the hook 8 to pass through. The hook 8 is in the shape of the letter F. The hook 8 is provided with a pressure plate 14 in the middle and a hook-shaped tail. An elastic element 9 is connected to the back of the pressure plate 14. The elastic element 9 is provided with a locking post 15, a first spring 16, a fixing frame 17 and a buckle plate 18. The fixing frame 17 is provided on the buckle plate 18 and has a groove. The locking post 15 is placed in the groove. The first spring 16 is provided on the outer side of the side wall of the locking post 15.

[0055] By adopting the above technical solution, the tail of the hook 8 protrudes from the slot 13 in a hook shape and enters the fixing slot 10. When there is no external force, the first spring 16 is in a normal state, so that the tail of the hook 8 is always placed in the fixing slot 10. When it is necessary to remove the rotary pump core 3, the finger applies pressure to the pressure plate 14, which drives the hook 8 to move backward as a whole, so that the first spring 16 is compressed and the tail of the hook 8 is removed from the fixing slot 10, and the rotary pump core 3 can be removed.

[0056] Preferably, the bottom surface of the rubber-coated bottom shell 1 and the bottom surface of the rotary pump core 3 are not in contact, forming an airflow cavity 43. The side of the outer shell 12 is provided with an airflow channel 19, which runs through the entire outer shell 12. The panel cover 11 is provided with an air groove 20. The panel cover 11 is also provided with a control circuit board 21, which is provided with a sensor. The rubber-coated bottom shell 1 is provided with a magnetic strip that can be sensed by the sensor. The lower end of the control circuit board 21 is provided with a battery pack 22. The charging and discharging module is located at the lower end of the snap-fit ​​pressure plate 18. The charging and discharging module is provided with an impeller 23, which is held by a motor seat 24 and a motor cover 25. The impeller 23 is connected to a motor 26, which is mounted on the side wall of the motor seat 24.

[0057] By adopting the above technical solution, when the air inlet 4 is aligned with the elastic valve 2, the air inlet 4 pushes out the elastic valve 2. At this time, the air inlet 4 is connected to the inflatable product, and the exhaust port 5 is connected to the airflow chamber 43 and the airflow channel 19. The motor 26 is started to drive the impeller 23 to rotate. The air outside the rotating pump core 3 is drawn in from the airflow channel 19, flows through the airflow chamber 43, and enters the rotating pump core 3 through the exhaust port 5. Then it is transported to the inflatable product by the impeller 23.

[0058] When the elastic valve 2 of the exhaust port 5 is aligned, the exhaust port 5 will push out the elastic valve 2. At this time, the exhaust port 5 is connected to the inflation product. The air released by the inflation product enters the rotary pump core 3 from the exhaust port 5. The air inlet 4 is connected to the airflow chamber 43 and the airflow channel 19. The motor 26 is started to drive the impeller 23 to rotate. The air in the rotary pump core 3 is drawn into the inflation and deflation module, flows into the airflow chamber 43 through the air inlet 4, and then flows through the airflow channel 19 before being discharged from the rotary pump core 3.

[0059] Preferably, the bottom of the rubber-coated base shell 1 is provided with an annular column 27 for ventilation, the elastic valve 2 is installed on the annular column 27, the bottom of the elastic valve 2 is cap-shaped, which can completely cover the bottom of the annular column 27, the annular column 27 is provided with a through column 28 in the middle, the elastic valve 2 is placed in the through column 28, and can slide laterally along the central axis of the through column 28.

[0060] By adopting the above technical solution, the upper end of the rubber-coated bottom shell 1 is provided with a marking cover plate, and the three indicator marks on its front are the three positions of inflate, deflate and off.

[0061] The inflation setting is as follows: When the arrow on the rotary pump core 3 rotates to align with the inflation mark, the air inlet 4 is aligned and fits with the annular column 27. At this time, the exhaust port 5 is connected to the airflow chamber 43. Simultaneously, the elastic valve 2 is pushed out by the bottom surface of the rotary pump core 3, and the inflation / deflation module is activated, generating suction to draw external airflow from the airflow channel 19. After flowing through the airflow chamber 43, the airflow enters the rotary pump core 3 through the exhaust port 5, is then drawn into the inflation / deflation module, and finally enters the inflated product through the air inlet 4.

[0062] When the arrow on the rotary pump core 3 rotates to align with the deflate mark, the exhaust port 5 is aligned and fits with the annular column 27. At this time, the air inlet 4 is connected to the airflow chamber 43, and the elastic valve 2 is pushed out by the bottom surface of the rotary pump core 3. The airflow in the inflated product can enter the rotary pump core 3 from the exhaust port 5. At this time, the inflation and deflation module is activated, generating suction to draw the airflow in the rotary pump core 3 into the airflow chamber 43 through the air inlet 4, and then discharge the rotary pump core 3 through the airflow.

[0063] When the "off" position is closed, and the arrow on the rotary pump core 3 rotates to align with the "off" mark, the slide groove 6 is aligned with the annular column 27. At this time, the air inlet 4, the exhaust outlet 5, and the airflow chamber 43 are connected. At the same time, the tail end of the elastic valve 2 can enter the slide groove 6. The elastic valve 2 is in a closed state, and the air in the inflated product cannot be discharged from the annular column 27.

[0064] Preferably, the elastic valve 2 is provided with a valve pressure plate 29, a valve claw 30 and a second spring 31. The valve pressure plate 29 is inverted T-shaped, with a disc at the bottom and a column in the middle. The column is located in a through column 28. The annular column 27 is provided with a concave ring 33 for placing a sealing ring 32. The top of the valve pressure plate 29 is provided with a valve claw 30. The second spring 31 is held between the valve claw 30 and the annular column 27.

[0065] By adopting the above technical solution, when the rotary pump core is in the inflate / deflate position, that is, when the air inlet 4 and air outlet 5 are aligned with the annular column 27, the bottom of the outer casing 12 will push the valve plate 29 into the mattress, and the second spring 31 will change from the normal state to the compressed state, causing the valve plate 29 to move away from the top of the annular column 27, that is, the elastic valve 2 is in the venting state. At this time, the airflow can pass through the annular column 27, realizing the entry and exit of airflow. When the rotary pump core is in the off position, that is, when the slide groove 6 is aligned with the annular column 27, the clearance space in the middle of the slide groove 6 can just accommodate the length of the valve plate 29 pushed out by the second spring 31 in the normal state. The second spring 31 provides the tension for the valve plate 29 to fit against the annular column 27. At the same time, since the valve plate 29 and the annular column 27 are already in contact, the thrust generated by the gas inside the inflated product on the valve plate 29 will further improve the airtightness between the valve plate 29 and the annular column 27. When the rotary pump core is in the inflate or deflate position, the sealing ring 32 is aligned with the air inlet 4 and the air outlet 5. The sides of the air inlet 4 and the air outlet 5 protrude from the bottom of the rotary pump core 3, which is exactly at the contact point with the sealing ring 32. At the same time, the sealing ring 32 is squeezed, which enhances the airtightness between the air inlet 4, the air outlet 5 and the annular column 27, keeping the connection between the two sealed.

[0066] Preferably, the front and rear sides of the rotary handle 7 are provided with slots 13 for the hooks 8 to pass through. There are two hooks 8 and two elastic elements 9, which are mirror images of each other on the front and rear sides of the rotary handle 7. There are two air inlets 4, two air outlets 5, and two slide grooves 6. The three are arranged in a circular array at the bottom of the outer casing 12. The two air inlets 4, the two air outlets 5, and the two slide grooves 6 are mirror images of each other. The slide groove 6 is trapezoidal and concave.

[0067] By adopting the above technical solution, when it is necessary to remove the rotary pump core 3, the index finger and thumb are simultaneously placed into the upper hook 8 and the lower hook 8, and the two fingers pinch inward, while squeezing the pressure plates 14 at both ends, so that the elastic elements 9 at both ends are compressed, and the two hooks 8 are disengaged from the fixing groove 10, so that the rotary pump core 3 can be separated from the rubber-coated bottom shell 1. Once the rotary pump core 3 is separated from the rubber-coated bottom shell 1, the elastic valve 2 is no longer affected by external force and automatically closes on the annular column 27, so that the inflatable product is in a sealed state. There are two annular columns 27 arranged in a straight line. The air inlet 4, the exhaust outlet 5 and the slide groove 6 are all arranged symmetrically in a straight line. The center point of the three is aligned with the columnar center point of the annular column 27 and the valve pressure plate, ensuring that when one of the air inlet 4 and the exhaust outlet 5 is aligned with the annular column 27, the other one is connected to the airflow cavity.

[0068] Preferably, there are two inflation / deflation modules. The bottom of the snap-fit ​​plate 18 is provided with an extension plate 34, and an inflation / deflation module 35 is provided on the extension plate 34. The inflation / deflation module 35 is directly attached to one of the air inlets 4. The inner wall of the outer shell 12 is provided with an extended air passage 36, which is attached to the other air inlet 4. An inflation / deflation module 37 is provided on the extended air passage 36.

[0069] By adopting the above technical solution, the inflation / deflation module is connected to the battery pack 22, the battery pack 22 supplies power to the inflation / deflation module, and the battery pack 22 uses lithium batteries, there are two of them, and they are DC power. The inflation / deflation module 35 and the inflation / deflation module 36 can work at the same time, improving the efficiency of inflation and deflation.

[0070] Preferably, a positioning rod 38 is provided in the middle of the bottom surface of the rubber-coated bottom shell 1, and an insertion post 39 is provided in the middle of the bottom surface of the outer shell 12 for the positioning rod 38 to be inserted. Positioning grooves 40 are provided at the center points of the air inlet 4, the exhaust outlet 5 and the slide groove 6. The top of the valve pressure plate 29 is hemispherical, and the positioning groove 40 allows the hemispherical top of the valve pressure plate 29 to be inserted.

[0071] By adopting the above technical solution, when the rotary pump core 3 is placed into the rubber-coated bottom shell 1, the positioning rod 38 is placed into the insertion post 39. When the rotary pump core 3 rotates, it can only rotate around the positioning rod 38 as the rotation axis. When it rotates to one of the three positions of inflate, deflate, and off, the hemispherical top of the valve pressure plate 29 can slide into the positioning groove 40 or the slide groove 6 of one of the positions, creating a sense of tactile feedback. This sense of tactile feedback is given to the user so that he knows that the rotary pump core 3 has entered a specific position.

[0072] Preferably, one of the hooks 8 has a pointer 41 at its front end, the pointer 41 protruding from the front end of the hook 8, and the fixing groove 10 has a pointer groove 42 for the pointer 41 to be inserted.

[0073] By adopting the above technical solution, the upper end of the rubber-coated bottom shell 1 is provided with three pointer slots 42: inflate, deflate, and off. When the rotary pump core 3 is placed into the rubber-coated bottom shell 1, the hook 8 is placed into the fixing groove 10. When the rotary pump core 3 rotates, if the pointer 41 is not in one of the three positions (inflate, deflate, off), the pointer 41 is squeezed by the fixing groove 10. Due to the presence of the elastic element 9, the pointer 41 is subjected to the restoring force of the elastic element 9, pressing against the inner wall of the fixing groove 10, so that the hook 8 still cannot be disengaged from the fixing groove 10. When the pointer 41 slides to one of the three positions of inflate, deflate, or off, the pointer groove 42 below it allows the pointer 41 to enter. At this time, the elastic element 9 is no longer under pressure, and the pointer 41 can be pushed into the groove. If the pointer 41 needs to be removed from the pointer groove 42, the pointer groove 42 is trapezoidal and concave, with outward inclined surfaces on both sides. The pointer 41 can be removed from the pointer groove 42 by slightly turning the rotary handle 7. The slide groove 6 is trapezoidal and concave, with outward inclined surfaces on both sides. The valve pressure plate 29 can be removed from the slide groove 6 by slightly turning the rotary handle 7.

[0074] Preferably, the control circuit board 21 is provided with a sensor, and the rubber-coated bottom shell 1 is provided with a magnetic strip that can be sensed by the sensor.

[0075] By adopting the above technical solution, the upper end of the rubber-coated bottom shell 1 is provided with three pointer slots 42: inflate, deflate, and off. The lower end of the pointer slots 42 corresponding to inflate and deflate is provided with a magnetic strip, while there is no magnetic strip in the off position. When the rotating pump core 3 enters the inflate and deflate positions, the sensor on the control circuit board 21 can sense the magnetic strip, thereby starting the inflation and deflation module to work, i.e., starting the motor. The sensor is a Hall sensor, specifically the OCH1660 Hall sensor from Shenzhen Kezhimei Electronics Co., Ltd.

[0076] Working principle: The rotating pump core 3 is locked in the rubber-coated base shell 1 by the cooperation of the hook 8 and the fixing groove 10, so that it can only rotate. The air inlet 4, the exhaust outlet 5, and the slide groove 6 are aligned on the same ring and are symmetrical to each other, forming 3 positions. The user can align one of the three ports (air inlet 4, exhaust outlet 5, slide groove 6) with the elastic valve 2 by rotating the rotating handle 7 with his wrist. When one of the ports (air inlet 4 or exhaust outlet 5) is aligned with the elastic valve 2, the elastic valve 2 can be pressed down by the bottom of the outer shell 12, causing the valve pressure plate 29 to be pushed outward, thus releasing the valve. When the rubber-coated bottom shell 1 is in a sealed state, the inflation or deflation operation can be performed simultaneously, and the inflation / deflation module can be activated. When the slide 6 is aligned with the elastic valve 2, the valve pressure plate 29 can be inserted into the middle of the slide 6, so that the elastic valve 2 is still in a closed state and the inflated product cannot deflate. At this time, the user inserts his index finger and thumb into the upper hook 8 and the lower hook 8 at the same time, pinches the two fingers inward, and squeezes the pressure plates 14 at both ends, so that the elastic elements 9 at both ends are compressed, and the two hooks 8 are disengaged from the fixing groove 10, so that the rotating pump core 3 can be separated from the rubber-coated bottom shell 1.

[0077] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. 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 knob-type double-hole inflation and deflation device, comprising a rubber-coated bottom shell (1), characterized in that: The rubber-coated bottom shell (1) is arranged on the inflatable product. The bottom wall of the rubber-coated bottom shell (1) is provided with an elastic valve (2). The rubber-coated bottom shell (1) is provided with a rotating pump core (3). The bottom of the rotating pump core (3) is provided with an air-injection port (4), an air-exhaust port (5) and a slide groove (6). The slide groove (6) is a space for avoiding the elastic valve (2). The top surface of the rotating pump core (3) is provided with a rotating handle (7). When subjected to an external force, the rotating handle (7) can drive the rotating pump core (3) to rotate around the axis of the rubber-coated bottom shell (1), so that the elastic valve (2) and the bottom of the rotating pump core (3) are in contact with each other. When the elastic valve (2) is located in the middle of the slide groove (6), the elastic valve (2) is closed and the rubber-coated bottom shell (1) is in a sealed state; when the elastic valve (2) is separated from the middle of the slide groove (6), the elastic valve (2) is opened and the rubber-coated bottom shell (1) is in a ventilated state; a hook (8) is provided on the rotary pump core (3) for limiting the rotary pump core (3) from exiting the rubber-coated bottom shell (1); the hook (8) is connected to the elastic member (9); a fixing groove (10) for the hook (8) to be placed in the side wall of the rubber-coated bottom shell (1); and a charging and discharging module is provided in the rotary pump core (3).

2. A knob-type double-hole inflation and deflation device according to claim 1, characterized in that: The rotary pump core (3) is provided with a panel cover (11) and a housing (12); the rotary handle (7) is located in the middle of the panel cover (11); a side of the rotary handle (7) is provided with a slot (13) for a hook (8) to pass through; the hook (8) is in the shape of the letter F; a pressing sheet (14) is provided in the middle of the hook (8); the tail is in the shape of a hook; an elastic member (9) is connected to the back of the pressing sheet (14); the elastic member (9) is provided with a clamping column (15), a first spring (16), a fixing frame (17) and a clamping plate (18); the fixing frame (17) is arranged on the clamping plate (18) and is provided with a groove; the clamping column (15) is located on the groove; the first spring (16) is arranged on the outer side of the side wall of the clamping column (15).

3. A knob-type double-hole inflation and deflation device according to claim 2, characterized in that: The bottom surface of the rubber-coated bottom shell (1) and the bottom surface of the rotating pump core (3) are not in contact with each other, so as to form an airflow cavity (43); an airflow channel (19) is provided on the side of the shell (12), and the airflow channel (19) runs through the entire shell (12); an air groove (20) is provided on the panel cover (11); the panel cover (11) is also provided with a control circuit board (21), on which a sensor is provided; a magnetic strip for sensing by the sensor is provided in the rubber-coated bottom shell (1); a battery pack (22) is provided at the lower end of the control circuit board (21); the charging and discharging module is arranged at the lower end of the buckle pressure plate (18); the charging and discharging module is provided with an impeller (23), and the impeller (23) is clamped by a motor seat (24) and a motor cover (25); the impeller (23) is connected to a motor (26), and the motor (26) is installed on the side wall of the motor seat (24).

4. A knob-type double-hole inflation and deflation device according to claim 3, characterized in that: The bottom of the rubber-coated bottom shell (1) is provided with an annular column (27) for ventilation, and the elastic valve (2) is installed on the annular column (27). The bottom of the elastic valve (2) is in the shape of a cover and can completely cover the bottom of the annular column (27). A through column (28) is provided in the middle of the annular column (27), and the elastic valve (2) is placed in the through column (28) and can slide horizontally along the central axis of the through column (28).

5. A knob-type double-hole inflation and deflation device according to claim 4, characterized in that: The elastic valve (2) is provided with a valve pressure plate (29), a valve clamping claw (30) and a second spring (31). The valve pressure plate (29) is in an inverted T-shape, and has a disc at the bottom and a columnar shape in the middle. The columnar body is located in the through-core column (28). The annular column (27) is provided with a concave ring (33) for placing a sealing ring (32). The top end of the valve pressure plate (29) is provided with a valve clamping claw (30), and the second spring (31) is clamped between the valve clamping claw (30) and the annular column (27).

6. A knob-type double-hole inflation and deflation device according to claim 5, characterized in that: The front and rear sides of the rotary handle (7) are provided with slots (13) for the hook (8) to pass through. The hook (8) and the elastic member (9) are provided with two, which are mirror-distributed on the front and rear sides of the rotary handle (7). The number of the air-inflating port (4), the air-exhaust port (5) and the slide groove (6) are two each, and the three are arranged along the same circular circumference at the bottom of the housing (12). The two air-inflating ports (4), the two air-exhaust ports (5) and the two slide grooves (6) are mirror-symmetrical, and the slide groove (6) is a trapezoidal concave shape.

7. A knob-type double-hole inflation and deflation device according to claim 6, characterized in that: There are two inflation and deflation modules, an extension plate (34) is provided at the bottom of the buckle pressure plate (18), and an inflation and deflation module 1 (35) is provided on the extension plate (34), and the inflation and deflation module 1 (35) is directly fitted with one of the inflation ports (4), and an extension air duct (36) is provided on the inner wall of the outer shell (12), and the extension air duct (36) is fitted with the other inflation port (4), and an inflation and deflation module 2 (37) is provided on the extension air duct (36).

8. A knob-type double-hole inflation and deflation device according to claim 7, characterized in that: A positioning rod (38) is provided in the middle of the bottom surface of the rubber-coated bottom shell (1), an insertion column (39) is provided in the middle of the bottom surface of the outer shell (12) for the positioning rod (38) to be inserted, and positioning grooves (40) are provided at the center points of the air inlet (4), the exhaust port (5) and the slide groove (6). The top end of the valve pressure plate (29) is hemispherical, and the positioning groove (40) can be inserted into the hemispherical top end of the valve pressure plate (29).

9. A knob-type double-hole inflation and deflation device according to claim 8, characterized in that: A pointer (41) is provided at the front end of one of the hooks (8), and the pointer (41) protrudes from the front end of the hook (8). A pointer groove (42) for the pointer (41) to be placed is provided in the fixing groove (10).

10. A knob-type double-hole inflation and deflation device according to claim 9, characterized in that: The rubber-encapsulated bottom shell (1) is provided with a plurality of magnetic strips that can be sensed by the sensor, and the magnetic strips are located at the lower end of the pointer slot (42).

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