Multi-path air supply low-noise inflator pump and inflatable cushion

Abstract

The utility model provides a multipath air supply low noise inflator pump and an inflatable cushion, the low noise inflator pump comprises an air pump assembly, a silencing box and a control valve assembly, the air pump assembly is used for generating air flow, and the control valve assembly is used for distributing the air flow; the control valve assembly comprises a fixed disc and a rotating disc, a plurality of air holes are formed in the upper surface of the fixed disc, and a plurality of annular grooves are formed in the rotating disc from the center to the outside to serve as airflow channels. And in the rotating process of the rotating disc, airflow can selectively enter the second air holes and / or the third air holes. Air inlet and exhaust control of the air holes is achieved through rotation of the rotating disc, the overall structure and the control mode are simplified, and noise caused by airflow during working can be reduced through the arrangement of the silencing box. The second air hole and the third air hole are connected to different air bags in the inflatable cushion respectively, periodic inflation and deflation adjustment is achieved on the air bags, periodic form changes are achieved on the surface of the inflatable cushion, and the massage effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of inflator pump, especially to a low noise inflator pump of multi -way air supply and air cushion. BACKGROUND

[0002] Now, air cushion or massage cushion is widely used in hospital and family, is used in physiotherapy, health care, eliminates fatigue. The air bed cushion needs to use the air pump to carry out the timely inflation and deflation to the bed cushion when using. The air cushion is internally provided with a plurality of air bags, and the air pump is used for alternately inflating and exhausting the plurality of air bags of the air cushion bed, so that the surface of the air cushion realizes periodic morphological change, and the massage effect is achieved.

[0003] The existing control air bag inflation and deflation mode is to set air valves in branch pipes leading to each air bag to control each air bag respectively, and the control element required by this mode is more, the control mode is complex, and the product failure rate is high. UTILITY MODEL CONTENTS

[0004] In view of the above-mentioned defects of the prior art, the utility model provides a low noise inflator pump of multi -way air supply, including air pump assembly, silencer box and control valve assembly;

[0005] The air pump assembly includes a pump shell and a diaphragm pump arranged in the pump shell, and the pump shell is provided with a first air inlet and a first air outlet communicated with the outside;

[0006] The side wall of the silencer box is provided with a second air inlet and a second air outlet, and the silencer box is provided with a silencer inside and between the second air inlet and the second air outlet, and the first air outlet and the second air inlet are connected by a gas supply main pipe to connect the gas flow channel between the air pump assembly and the silencer box;

[0007] The control valve assembly includes a fixed disc provided with an internal air cavity and a rotating disc stacked on the fixed disc, the upper surface of the fixed disc is provided with a first air hole, a second air hole and a third air hole, the side wall of the fixed disc is connected with a first air pipe, a second air pipe and a third air pipe, each air hole is respectively communicated to each air pipe through the internal air cavity of the fixed disc, the air pump assembly is connected with the silencer box through the gas supply main pipe, and the silencer box is connected to the first air hole through the first air pipe;

[0008] The rotating disc has a center hole with an opening downward and coaxially arranged, a first annular groove and a first arc-shaped groove, the two ends of the first arc-shaped groove are connected through the first arc-shaped baffle, the first arc-shaped groove and the first arc-shaped baffle are connected in head and tail to form a closed annular area, and the circumference of the first arc-shaped groove is greater than the circumference of the first arc-shaped baffle, and the first annular groove and the first arc-shaped groove are communicated through a first communication port;

[0009] The projection of the first annular groove on the fixed disc covers the first air hole, and the projection of the annular area on the fixed disc covers the second air hole and the third air hole, so that during rotation of the rotating disc, air from the first air hole can enter the second air hole alone, or enter the third air hole alone, or enter the second air hole and the third air hole simultaneously.

[0010] Optionally, the first arc-shaped baffle is provided with an air release gap at a position away from the first communication port, and the air release gap is in communication with an air release hole provided on the upper surface of the rotating disc.

[0011] Optionally, the control valve assembly further comprises a rotating motor, and a rotating shaft of the rotating motor penetrates the fixed disc in an upward direction and is fixedly connected with the inner wall of the central hole.

[0012] Optionally, the low-noise air pump further comprises a lower disc and an upper cover which are buckled to each other.

[0013] Optionally, the air pump assembly is connected with the lower disc through a damping fixing foot, and the outer surface of the lower disc is provided with a damping foot pad.

[0014] Optionally, the side wall of the lower disc and / or the side wall of the upper cover is provided with an air nozzle support, and the air nozzle support is provided with a plurality of air ports for guiding air flow of the second air pipe and the third air pipe to the inflated object.

[0015] Optionally, the low-noise air pump further comprises a circuit board, and the circuit board is electrically connected with the air pump assembly and the control valve assembly respectively.

[0016] Optionally, the control valve assembly further comprises a touch switch arranged at the periphery of the rotating disc and electrically connected with the circuit board, and a push piece is fixed to the outer wall surface of the rotating disc, and the push piece can touch the touch switch when the rotating disc rotates.

[0017] Optionally, the low-noise air pump further comprises a knob assembly, and the knob assembly comprises a flow control knob, a time control knob and a power switch arranged on the side wall of the upper cover.

[0018] The utility model further provides a kind of inflatable pad, comprising the low-noise air pump, and the inflatable pad is provided with multiple air bags which can be communicated with the second air pipe and the third air pipe.

[0019] As described above, the utility model provides a kind of low noise air pump and air cushion of multiway air supply, and the low noise air pump includes air pump assembly, silencer and control valve assembly, air pump assembly is used to generate airflow, and control valve assembly is used to distribute airflow;Control valve assembly includes fixed disc and rotating disc, the upper surface of fixed disc is equipped with multiple air holes, and multiple annular grooves are formed as airflow passage from center to outside in rotating disc.The air inlet from first air hole can enter second air hole alone, or enter third air hole alone, or enter second air hole and third air hole simultaneously in the rotating process of rotating disc;Control valve assembly realizes the air inlet and exhaust control of air hole using the rotation of rotating disc, simplifies overall structure and control mode, and the setting of silencer can reduce the noise brought by airflow when working.Second air hole and third air hole are connected to each air bag in air cushion respectively, and then periodic inflation and deflation adjustment of air bag is realized, so that the surface of air cushion realizes periodic morphological change, and massage effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It shows the internal structure schematic diagram of air pump in the embodiment one of the utility model.

[0021] Figure 2 It shows the upper cover structure schematic diagram of air pump in the embodiment one of the utility model.

[0022] Figure 3 It shows the lower disc structure schematic diagram of air pump in the embodiment one of the utility model.

[0023] Figure 4 It shows the overhead structure schematic diagram of fixed disc in the embodiment one of the utility model.

[0024] Figures 5 to 9 It shows the overhead structure schematic diagram of rotating disc when rotating to a certain angle in the embodiment one of the utility model.

[0025] ELEMENT NUMBER EXPLANATION

[0026] Upper cover 11;Flow control knob 12;Power switch 13;Time control knob 14;Air pump assembly 15;Air nozzle support 16;Damping foot pad 17;Silencer 18;First air pipe 19;Power supply box 20;Lower disc 21;Power cord 22;Control valve assembly 23;Second air pipe 24;Third air pipe 25;Hanging arm fixing seat 26;Hanging arm 27;Damping fixed foot 28;Air supply main pipe 29;Fixed disc 30;First air hole 31;Second air hole 32;Third air hole 33;Rotating disc 40;First annular baffle 41;Second annular baffle 42;First arc baffle 43;Paddle 44;First communication port 421;Deflation notch 431;Deflation hole 401. DETAILED DESCRIPTION

[0027] The embodiments of the present application will be described in detail with specific examples. Those skilled in the art can easily understand other advantages and functions of the present application from the content disclosed in the specification. The present application can also be implemented or applied in other different embodiments, and the details in the specification can be modified or changed based on different views and applications without departing from the spirit of the present application.

[0028] As described in the detailed embodiments of the present application, the sectional view of the device structure is partially enlarged without the general proportion for the convenience of description, and the schematic diagram is only an example which should not limit the scope of protection of the present application. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in the actual manufacture.

[0029] For the convenience of description, spatial relationship words such as "under", "below", "lower", "under", "above", "upper" and the like can be used to describe the relationship between one element or feature and other elements or features shown in the drawings. It will be understood that these spatial relationship words are intended to include other directions of the device in use or operation in addition to the directions depicted in the drawings. In addition, when a layer is referred to as "between" two layers, it can be the only layer between the two layers, or one or more intervening layers can also be present. "Between" is used herein to include both end point values.

[0030] In the context of the present application, the structure described as the first feature "above" the second feature can include the embodiment in which the first and second features are formed in direct contact, and can also include the embodiment in which another feature is formed between the first and second features, so that the first and second features can not be in direct contact.

[0031] It should be noted that the diagrams provided in the embodiments only illustrate the basic concept of the present application in a schematic manner, and only show the components related to the present application in the diagrams, not the number, shape and size of the components when actually implemented. The actual implementation of each component can be randomly changed, and the component layout pattern can be more complex.

[0032] Embodiment one

[0033] The present embodiment provides a multi-path air supply low-noise air pump, as shown in the drawings, the low-noise air pump comprises a gas pump assembly 15, a sound attenuation box 18 and a control valve assembly 23, the gas pump assembly 15 is used to generate air flow, and the control valve assembly 23 is used to distribute the air flow. Figures 1 to 3

[0034] ​The air pump assembly 15 comprises a pump shell and a diaphragm pump arranged in the pump shell, the pump shell is provided with a first air inlet and a first air outlet which are communicated with the outside; the side wall of the sound box 18 is provided with a second air inlet and a second air outlet, the sound box 18 is provided with a sound reduction member between the second air inlet and the second air outlet, and the first air outlet and the second air inlet are connected by a gas supply main pipe 29 to connect the air flow channel between the air pump assembly and the sound box.

[0035] The control valve assembly 23 comprises a fixed disc 30 and a rotating disc 40 stacked on the fixed disc 30, as shown in Figure 4 、 Figure 5 The upper surface of the fixed disc 30 is provided with a first air hole 31, a second air hole 32 and a third air hole 33, the side wall of the fixed disc 30 is connected with a first air pipe 19, a second air pipe 24 and a third air pipe 25, each air hole is communicated to each air pipe through the internal air cavity of the fixed disc 30, the air pump assembly 15 is connected to the sound box 18 through the gas supply main pipe 29, and the sound box 18 is connected to the first air hole 31 of the control valve assembly 23 through the first air pipe 19.

[0036] The rotating disc 40 has a central hole, a first annular groove and a first arc-shaped groove which are coaxially arranged and open downward, the central hole and the first annular groove are separated by a first annular baffle 41 and a second annular baffle 42, the first annular groove and the first arc-shaped groove are separated by the second annular baffle 42 and a first arc-shaped baffle 43, the two ends of the first arc-shaped groove are connected by the first arc-shaped baffle 43, the first arc-shaped groove and the first arc-shaped baffle 43 form a closed annular area, and the first annular groove and the first arc-shaped groove are communicated by a first communication port 421.

[0037] The projection of the first annular groove on the fixed disc 30 covers the first air hole 31, and the projection of the annular area on the fixed disc 30 covers the second air hole 32 and the third air hole 33, so that during the rotation of the rotating disc 40, the air from the first air hole 31 can enter the second air hole 32 alone, or enter the third air hole 33 alone, or enter the second air hole 32 and the third air hole 33 at the same time.

[0038] More specifically, a first annular groove is formed between the first annular baffle 41 and the second annular baffle 42. The projection of the first annular groove on the fixed disk 30 covers the first air hole 31, ensuring that the first annular groove and the first air hole 31 remain connected during the rotation of the rotating disk 40. The second annular baffle 42 has a first communication port 421, which connects the first annular groove and the first arcuate groove. An annular area is formed between the second annular baffle 42 and the housing of the rotating disk 40. Less than half of this annular area is filled by the first arcuate baffle 43, with the remaining portion serving as the first arcuate groove. The first communication port 421 is located on the side of the second annular baffle 42 opposite the first arcuate baffle 43, connecting the first annular groove and the first arcuate groove. The projection of the annular area on the fixed disk 30 covers the second air hole 32 and the third air hole 33, so that during the rotation of the rotating disk 40, the intake air from the first air hole 31 can enter the second air hole 32 alone, the third air hole 33 alone, or both simultaneously. It should be noted that the circumference of the first arcuate groove is greater than the circumference of the first arcuate baffle. In other words, the first arcuate baffle 43 circumferentially occupies less than half of the annular area. This prevents the first arcuate baffle 43 from simultaneously blocking the second air hole 32 and the third air hole 33, eliminating the risk of explosion caused by air hole blockage.

[0039] Furthermore, a gas relief notch 431 is provided at a portion of the first arc-shaped baffle 43 away from the first connecting port 421, and the gas relief notch 431 is connected to the gas relief hole 401 provided on the upper surface of the rotating disk 40, so that when the rotating disk 40 rotates, the gas can be discharged in the reverse direction when the gas relief notch 431 reaches the second air hole 32 or the third air hole 33.

[0040] Furthermore, the control valve assembly 23 further includes a rotary motor, the rotary shaft of which passes through the fixed disk and is fixedly connected to the inner wall of the center hole of the rotary disk 40 to drive the rotary disk 40 to rotate.

[0041] like Figures 5 to 9 As shown in FIG, the second air hole 32 and the third air hole 33 are opened and closed when the rotating disk 40 rotates at different angles. Figure 5 In the state shown, the second air hole 32 is in the air intake state, and the third air hole 33 is in the blocking state; Figure 6 In the state shown, the second air hole 32 is in the air intake state, and the third air hole 33 is in the air exhaust state; Figure 7 In the state shown, the second air hole 32 is in the air intake state, and the third air hole 33 is in the air intake state; Figure 8 In the state shown, the second air hole 32 is in a blocked state, and the third air hole 33 is in an air intake state; Figure 9In the shown state, the second air hole 32 is in the exhaust state, and the third air hole 33 is in the intake state. The second air hole 32 and the third air hole 33 are respectively connected to the air bags in the air cushion, and the air bags in the air cushion are periodically inflated and deflated to adjust the surface of the air cushion to achieve the massage effect.

[0042] Further, the outer wall surface of the rotating disc 40 is further fixed with a push piece 44, which is matched with a touch switch located at the periphery of the rotating disc and electrically connected with the circuit board (PCBA board). During rotation, the push piece 44 can touch the touch switch, and the signal is transmitted to the circuit board through the touch of the rotating disc 40 and the touch switch, so as to measure the operation data of the rotating disc 40, such as the number of degrees of rotation, so as to measure the rotating speed of the rotating disc 40. The circuit board further accurately controls the rotating speed according to the feedback signal.

[0043] Further, the low-noise air pump further comprises a lower disc 21 and an upper cover 11 (which can be screwed for easy disassembly and maintenance) that are buckled to each other. The lower disc 21 is provided with an air pump assembly 15, a sound reduction box 18, and a power supply box 20. The airflow generated by the air pump assembly 15 first enters the sound reduction box 18 through the air supply main pipe 29, and then enters the control valve assembly 23 through the first air pipe 19 after being processed by the sound reduction box 18. The sound reduction part in the sound reduction box 18 can be sound reduction cotton or other accessories with sound reduction effect. The airflow passing through the sound reduction box 18 is more stable during movement, thereby reducing noise. At the same time, the air pump assembly 15 adopts a diaphragm pump, which has smaller noise. The air pump assembly 15 is connected to the lower disc 21 through the shock-absorbing fixing foot 28, and the outer surface of the lower disc 21 is provided with a shock-absorbing foot pad 17, which can reduce the noise caused by vibration during work. Especially when applied to medical devices such as air cushions or massage cushions, noise interference is reduced.

[0044] The side wall of the lower disc 21 and / or the side wall of the upper cover is provided with an air nozzle support 16, which can be provided with multiple air ports for guiding the airflow of the second air pipe 24 and the third air pipe 25 to the inflated object.

[0045] Further, the low-noise air pump further comprises a knob part, which comprises a flow control knob 12, a time control knob 14, and a power switch 13 arranged on the side wall of the upper cover. The knob part is electrically connected with the circuit board. The circuit board is electrically connected with the air pump assembly 15, the control valve assembly 23, and the power supply box 20, respectively.

[0046] The power supply assembly of the air pump comprises a power supply box 20, a power supply line 22, and an overcurrent protection unit (such as a fuse). The power supply box 20 is provided with a power supply module. The circuit board is electrically connected with the power supply module, the overcurrent protection unit, and the power supply line. The power supply is turned on when the start switch is turned on. When the current is too large, the overcurrent protection unit is fused to cut off the power supply. At this time, only the fuse needs to be replaced, and the circuit board will not be damaged.

[0047] Further, the outer surface of the lower disc is connected with a hanging arm 27 through a hanging arm fixing seat 26 to meet various fixing modes such as hanging.

[0048] The working process of the low-noise inflation pump is as follows:

[0049] Plug in the power supply, turn on the power switch, and start the diaphragm pump to start inflating. The flow control knob can adjust the flow of the diaphragm pump. After the airflow passes through the diaphragm pump outlet and enters the sound attenuation box, it enters the control valve assembly from the outlet of the sound attenuation box for airflow distribution. The control valve assembly is controlled by the timing control knob, which can control the product airflow usage time. The timing control knob is electrically connected to the motor that drives the rotating disc. During the rotation of the rotating disc, the circulation of the air holes and flow channels is opened and closed to change the inflation and exhaust flow channels. In order to accurately control the rotational speed and flow, a touch switch is provided beside the rotating disc. The touch switch is electrically connected to the circuit board. The rotating disc can touch the touch switch during rotation. Through the touch of the touch switch, the signal is transmitted to the circuit board. The circuit board accurately controls the rotational speed of the rotating disc according to the feedback signal. In order to ensure the safety of the air pump and reduce the cost caused by damage, a fuse seat is provided in the shell. Even if a short circuit occurs, the fuse will melt first to prevent other components from being damaged. This situation only needs to replace the fuse, and the product can still be used. The fuse seat can be fixed by external bolts for easy disassembly and replacement.

[0050] Example Two

[0051] Based on the low-noise inflation pump in the above-mentioned example one, the present example provides an inflation cushion, which is provided with a plurality of air bags capable of communicating with the second air pipe and the third air pipe. The second air pipe and the third air pipe are respectively connected to different air bags, so that the plurality of air bags are alternately inflated and deflated to realize periodic shape changes on the surface of the inflation cushion, achieving a massage effect. At the same time, based on the inflation pump adopting a series of noise reduction treatments, the noise caused by airflow and vibration during operation can be reduced, ensuring a quiet environment during massage and providing a better product use experience.

[0052] In summary, the utility model provides a kind of low noise air pump and air cushion of multiway air supply, and the low noise air pump includes air pump assembly, silencer and control valve assembly, air pump assembly is used to generate airflow, and control valve assembly is used to distribute airflow;Control valve assembly includes fixed disc and rotating disc, the upper surface of fixed disc is equipped with multiple air holes, and multiple annular grooves are formed as airflow passage from center to outside in rotating disc.The intake from first air hole can separately enter second air hole, or separately enter third air hole, or simultaneously enter second air hole and third air hole in the rotating process of rotating disc;Control valve assembly realizes the intake and exhaust control of air hole using the rotation of rotating disc, simplifies overall structure and control mode, and the setting of silencer can reduce the noise brought by airflow when working.Second air hole and third air hole are respectively connected to each air bag in air cushion, and then periodic inflation and deflation regulation of air bag is realized, so that periodic morphological change of air cushion surface is realized, and massage effect is achieved.

[0053] The above embodiments only exemplarily illustrate the principles and effects of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A low-noise air pump with multiple air supply channels, characterized in that: Including air pump assembly, muffler box and control valve assembly; The air pump assembly includes a pump housing and a diaphragm pump disposed in the pump housing, wherein the pump housing is provided with a first air inlet and a first air outlet communicating with the outside; The side wall of the muffler box is provided with a second air inlet and a second air outlet, the muffler box is provided with a muffler and is arranged between the second air inlet and the second air outlet, and the first air outlet and the second air inlet are connected by an air supply main pipe to communicate the air flow channel between the air pump assembly and the muffler box; The control valve assembly includes a fixed disk provided with an internal air cavity and a rotating disk stacked on the fixed disk, the upper surface of the fixed disk is provided with a first air hole, a second air hole and a third air hole, the side wall of the fixed disk is connected to a first air pipe, a second air pipe and a third air pipe, each air hole is connected to each air pipe respectively through the internal air cavity of the fixed disk, the air pump assembly is connected to the muffler box through an air supply main pipe, and the muffler box is connected to the first air hole through the first air pipe; The interior of the rotating disk has a center hole, a first annular groove, and a first arcuate groove, both ends of which are connected by a first arcuate baffle. The first arcuate groove and the first arcuate baffle are connected end to end to form a closed annular area. The circumference of the first arcuate groove is greater than the circumference of the first arcuate baffle. The first annular groove and the first arcuate groove are connected through a first communication port. The projection of the first annular groove on the fixed disk covers the first air hole, and the projection of the annular area on the fixed disk covers the second air hole and the third air hole, so that when the rotating disk rotates, the air intake from the first air hole can enter the second air hole alone, or enter the third air hole alone, or enter the second air hole and the third air hole at the same time.

2. The low-noise air pump with multiple air supply channels according to claim 1, characterized in that: A degassing notch is provided at a portion of the first arc-shaped baffle away from the first communicating port, and the degassing notch is communicated with a degassing hole provided on the upper surface of the rotating disk.

3. The low-noise air pump with multiple air supply channels according to claim 1, characterized in that: The control valve assembly further includes a rotary motor, wherein a rotary shaft of the rotary motor passes through the fixed disk and is fixedly connected to the inner wall of the central hole.

4. The low-noise air pump with multiple air supply channels according to claim 1, characterized in that: The low-noise air pump further comprises a lower plate and an upper cover which are buckled together.

5. The low-noise air pump with multiple air supply channels according to claim 4, characterized in that: The air pump assembly is connected to the lower plate via shock-absorbing fixing feet, and the outer surface of the lower plate is provided with a shock-absorbing foot pad.

6. The low-noise air pump with multiple air supply channels according to claim 4, characterized in that: The side wall of the lower plate and / or the side wall of the upper cover is provided with an air nozzle bracket, and the air nozzle bracket is provided with multiple air ports for introducing the airflow of the second air pipe and the third air pipe into the filled object.

7. The low-noise air pump with multiple air supply channels according to claim 1, characterized in that: The low-noise air pump also includes a circuit board, which is electrically connected to the air pump component and the control valve component respectively.

8. The low-noise air pump with multiple air supply channels according to claim 7, characterized in that: The control valve assembly further includes a touch switch disposed on the periphery of the rotating disk and electrically connected to the circuit board. A paddle is fixed to the outer wall of the rotating disk, and the paddle can touch the touch switch when the rotating disk rotates.

9. The low-noise air pump with multiple air supply channels according to claim 4, characterized in that: The low-noise air pump further comprises a knob component, comprising a flow control knob, a time control knob and a power switch which are arranged on the side wall of the upper cover.

10. An inflatable cushion, characterized in that: It comprises the low-noise air pump according to any one of claims 1 to 9, wherein the air cushion is provided with a plurality of air bags that can be communicated with the second air pipe and the third air pipe.

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