Valve plate and air pump with same
By designing a valve plate structure with a centrally symmetrical or uniform arrangement, the problems of slow response and easy fatigue of air pump valve plates are solved, achieving fast response, uniform opening and closing, and large flow area, thus extending the service life of the valve plates.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-03-24
AI Technical Summary
Existing air pump valves suffer from problems such as slow switching response, poor sensitivity, uneven valve opening and closing, and easy valve fatigue.
A valve disc is designed, comprising a disc body, a groove, and a rocker arm. The groove runs through the disc body, dividing it into a sealing part and a mounting part. The width of the rocker arm is constant in the length direction and is centrally symmetrically or uniformly arranged to achieve rapid opening and closing of the valve port.
This achieves rapid response and uniform opening and closing of the valve plate, increases the flow area, reduces valve plate fatigue, and extends service life.
Smart Images
Figure CN224033149U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of air pump, specifically, relate to a valve plate and have the air pump of valve plate. BACKGROUND
[0002] In the related art, the air suction valve and / or exhaust valve of the air pump usually uses the valve plate to open and close the valve port, and during the opening and closing process of the valve plate, there are problems of gradual change of the flow area of the valve port, small flow area and slow response of the valve port opening and closing. Some solutions are proposed in the related art, but there are still problems of slow response of the valve plate opening and closing, poor sensitivity, uneven opening and closing of the valve port, easy fatigue of the valve plate after a period of use, and the like, and there is a need for improvement. SUMMARY
[0003] The utility model aims at at least in a certain extent solves one of the technical problems in the related art.
[0004] Therefore, the embodiment of the utility model provides a valve plate which is fast in switching response, uniform in opening and closing, large in flow area and not easy to fatigue.
[0005] The embodiment of the utility model further provides an air pump with the valve plate of the above embodiment.
[0006] The valve plate of the embodiment of the utility model comprises a plate body, the plate body is provided with a slot, the slot penetrates the plate body along the thickness direction of the plate body, the slot divides the plate body into a sealing part, a mounting part and a plurality of swing arms, the sealing part and the mounting part are concentric with each other, one of the sealing part and the mounting part is arranged around the other, the width of the swing arm is substantially constant in the length direction of the swing arm, the first end of the swing arm is connected with the sealing part, and the second end of the swing arm is connected with the mounting part, wherein when the number of swing arms is even, a plurality of swing arms are arranged in pairs, and the two swing arms in the same pair of swing arms are centrosymmetric to each other relative to the center of the sealing part, and wherein when the number of swing arms is odd, a plurality of swing arms are uniformly arranged around the center of the sealing part along the circumferential direction of the sealing part.
[0007] The valve plate of the embodiment of the utility model is instantaneously changed when opening and closing the valve port, fast in response speed, high in sensitivity, the sealing surface of the air hole of the sealing part and the valve seat is always parallel, the valve port is uniformly opened and closed, the flow area is large under the condition of opening the same height compared with the valve plate of the related art, and the service life of the valve plate is long.
[0008] In some embodiments, one of the sealing portion and the mounting portion is circular ring shape and the other is circular shape, the circular ring shape surrounds the circular shape, the swing arms are arc-shaped, the swing arms are two and are centrally symmetric to each other relative to the center of the sealing portion, the first end of each swing arm is connected to the sealing portion through a first connecting portion, the second end of each swing arm is connected to the mounting portion through a second connecting portion, the slots are two, each slot comprises an arc-shaped outer slot segment, an arc-shaped inner slot segment and a connecting slot segment connected between the outer slot segment and the inner slot segment, one of the swing arms is located between the outer slot segment of one slot and the inner slot segment of the other slot, and the other swing arm is located between the inner slot segment of the one slot and the outer slot segment of the other slot.
[0009] In some embodiments, the central angles (θ) of the inner slot segment and the outer slot segment are equal, and the central angles are greater than or equal to 120 degrees and less than or equal to 150 degrees.
[0010] In some embodiments, one of the sealing portion and the mounting portion is circular ring shape and the other is circular shape, the circular ring shape surrounds the circular shape, the swing arms are arc-shaped, the swing arms are three and are uniformly arranged around the center of the sealing portion along the circumference of the sealing portion, the first end of each swing arm is connected to the sealing portion through a first connecting portion, the second end of each swing arm is connected to the mounting portion through a second connecting portion, the slots are three, each slot comprises an arc-shaped outer slot segment, an arc-shaped inner slot segment and a connecting slot segment connected between the outer slot segment and the inner slot segment, and each swing arm is located between the outer slot segment of one slot and the inner slot segment of the other slot.
[0011] In some embodiments, one of the sealing portion and the mounting portion is rectangular ring shape and the other is rectangular shape, the rectangular ring shape surrounds the rectangular shape, the swing arms are straight arms, the swing arms are two and are centrally symmetric to each other relative to the center of the sealing portion, the slots are two and are generally U-shaped, each slot comprises an outer slot segment, an inner slot segment and a connecting slot segment connected between the outer slot segment and the inner slot segment, one of the swing arms is located between the outer slot segment of one slot and the inner slot segment of the other slot, and the other swing arm is located between the inner slot segment of the one slot and the outer slot segment of the other slot.
[0012] In some embodiments, one of the sealing portion and the mounting portion is rectangular ring shape and the other is rectangular, the rectangular ring shape surrounds the rectangular, the swing arm is straight arm, the swing arm includes a pair of first swing arms and a pair of second swing arms, the slot is generally L-shaped and includes a pair of first slots and a pair of second slots, the pair of first slots are center symmetric to each other with respect to the center of the sealing portion, the pair of second slots are center symmetric to each other with respect to the center of the sealing portion, the first slot includes a first outer slot segment and a first inner slot segment, the second slot includes a second outer slot segment and a second inner slot segment, the second outer slot segment includes a second outer slot narrow segment and a second outer slot wide segment connected between the second outer slot narrow segment and the second inner slot segment,
[0013] wherein the first swing arm is located between the first outer slot segment and the second inner slot segment, and the second swing arm is located between the second outer slot narrow segment and the first inner slot segment.
[0014] In some embodiments, one of the sealing portion and the mounting portion is rectangular ring shape and the other is rectangular, the rectangular ring shape surrounds the rectangular, the swing arm is generally L-shaped, the swing arm includes a pair of first swing arms and a pair of second swing arms,
[0015] the slot is generally U-shaped and includes a pair of first slots and a pair of second slots, the pair of first slots are center symmetric to each other with respect to the center of the sealing portion, the pair of second slots are center symmetric to each other with respect to the center of the sealing portion,
[0016] the first slot includes a first outer slot segment, a first inner slot segment and a first connecting slot segment connected between the first outer slot segment and the first inner slot segment, the second slot segment includes a second outer slot segment, a second inner slot segment and a second connecting slot segment connected between the second outer slot segment and the second inner slot segment, the second connecting slot segment includes a second connecting slot narrow segment connected with the second outer slot segment and a second connecting slot wide segment connected with the second inner slot segment,
[0017] one leg of the first swing arm is located between the first connecting slot segment and the second inner slot segment, and the other leg of the first swing arm is located between the first outer slot segment and the second connecting slot segment;
[0018] one leg of the second swing arm is located between the first inner slot segment and the second connecting slot narrow segment, and the other leg of the second swing arm is located between the second outer slot segment and the first connecting slot segment.
[0019] In some embodiments, the sealing portion is generally rectangular, the mounting portion includes four generally rectangular mounting sub-portions, the four mounting sub-portions are arranged at intervals around the circumference of the sealing portion, the swing arm is L-shaped, the swing arm is four and includes a pair of first swing arms and a pair of second swing arms, and the four mounting sub-portions are connected to the four swing arms one by one,
[0020] The slot is generally L-shaped and includes a pair of first slots and a pair of second slots, the first slot includes a first inner slot segment and a first outer slot segment, the second slot includes a second inner slot segment and a second outer slot segment, and the second outer slot segment includes a second outer slot narrow segment and a second outer slot wide segment connected to the second inner slot segment,
[0021] One leg of the first swing arm is located between the first outer slot segment and the second inner slot segment, and the other leg of the first swing arm is adjacent to the second outer slot segment and located outside the second outer slot segment.
[0022] One leg of the second swing arm is located between the first inner slot segment and the second outer slot narrow segment, and the other leg of the second swing arm is adjacent to the first outer slot segment and located outside the first outer slot segment.
[0023] In some embodiments, the width H of the swing arm is greater than or equal to 1.3 mm and less than or equal to 5 mm, and the thickness T of the sheet body is greater than or equal to 0.1 mm and less than or equal to 0.5 mm.
[0024] The air pump of the embodiment of the utility model for use includes the valve sheet according to any one of the above embodiments. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 is the sectional view schematic drawing of the valve sheet of the first embodiment of the utility model for use.
[0026] Figure 2 is the sectional view schematic drawing of the valve sheet of the first embodiment of the utility model for use.
[0027] Figure 3 is the sectional view schematic drawing of the valve sheet of the second embodiment of the utility model for use.
[0028] Figure 4 is the sectional view schematic drawing of the valve sheet of the third embodiment of the utility model for use.
[0029] Figure 5 is the sectional view schematic drawing of the valve sheet of the fourth embodiment of the utility model for use.
[0030] Figure 6 is the sectional view schematic drawing of the valve sheet of the fifth embodiment of the utility model for use.
[0031] Figure 7is a sectional view schematic diagram of the valve piece of the sixth embodiment of the utility model.
[0032] Figure 8 is a sectional view schematic diagram of the valve piece of the seventh embodiment of the utility model.
[0033] Figure 9 is a sectional view schematic diagram of the valve piece of the eighth embodiment of the utility model.
[0034] Figure 10 is a sectional view schematic diagram of the valve piece of the ninth embodiment of the utility model.
[0035] Figure 11 is a sectional view schematic diagram of the valve piece of the tenth embodiment of the utility model.
[0036] Figure 12 is a sectional view schematic diagram of the valve piece of the eleventh embodiment of the utility model.
[0037] Figure 13 is a partial schematic diagram of the valve piece of the air pump in the closed state of the embodiment of the utility model.
[0038] Figure 14 is a partial schematic diagram of the valve piece of the air pump in the open state of the embodiment of the utility model.
[0039] Figure 15 is another partial schematic diagram of the valve piece of the air pump in the closed state of the embodiment of the utility model.
[0040] Figure 16 is another partial schematic diagram of the valve piece of the air pump in the open state of the embodiment of the utility model.
[0041] Reference signs:
[0042] 1, cylinder; 1021, second space; 1022, first space;
[0043] 201, vent hole; 202, valve piece installation groove; 22, valve seat; 223, fixed part; 224, flange;
[0044] 8, valve piece;
[0045] 81, piece body;
[0046] 82. Groove joint; 821. Outer groove joint segment; 822. Inner groove joint segment; 823. Connecting groove joint segment; 824. First groove joint; 8241. First outer groove joint segment; 8242. First inner groove joint segment; 8243. First connecting groove joint segment; 825. Second groove joint; 8251. Second outer groove joint segment; 82511. Narrow segment of second outer groove joint; 82512. Wide segment of second outer groove joint; 8252. Second inner groove joint segment; 8253. Second connecting groove joint segment; 82531. Narrow segment of second connecting groove joint; 82532. Wide segment of second connecting groove joint;
[0047] 83. Sealing part;
[0048] 84. Mounting section; 841. Assembly hole; 842. First mounting sub-section; 843. Second mounting sub-section;
[0049] 85. Swing arm; 851. First swing arm; 852. Second swing arm;
[0050] 86. First connecting part;
[0051] 87. Second connecting part. Detailed Implementation
[0052] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.
[0053] like Figures 1-16 As shown, the valve plate 8 of this embodiment includes a plate body 81, which has a groove 82 extending through it along its thickness. The groove 82 divides the plate body 81 into a sealing portion 83, a mounting portion 84, and a plurality of swing arms 85. The sealing portion 83 and the mounting portion 84 are concentric, meaning the center of the sealing portion 83 coincides with the center of the mounting portion 84. One of the sealing portion 83 and the mounting portion 84 is arranged around or around the other. The swing arms 85 are elastic arms with a generally constant width along their length. The first end of the swing arm 85 is connected to the sealing portion 83, and the second end of the swing arm 85 is connected to the mounting portion 84.
[0054] When the number of swing arms 85 is even, the multiple swing arms 85 are arranged in pairs, that is, the multiple swing arms 85 are divided into at least one pair. The two swing arms 85 in the same pair are centrally symmetrical with respect to the center of the sealing part 83, that is, one swing arm 85 rotates 180 degrees to coincide with the other swing arm 85. When the number of swing arms 85 is odd, the multiple swing arms 85 are evenly arranged around the center of the sealing part 83 along the circumference of the sealing part 83. For example, if the number of swing arms 85 is N, where N is an odd number, in two adjacent swing arms 85, one swing arm 85 rotates 360 / N degrees around the center of the sealing part 83 to coincide with the other swing arm 85. In this embodiment of the present invention, the valve plate 8, with its centrally symmetrical or evenly arranged swing arms 85 along the circumference of the sealing part 83, improves the uniformity of force on the sealing part 83 and improves the opening and closing performance of the valve plate 8.
[0055] In some examples, the thickness T of the plate 81 can be greater than or equal to 0.1 mm and less than or equal to 0.5 mm, for example, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm. The valve plate 8 can be a metal sheet, such as a stainless steel sheet or an alloy sheet. Optionally, the valve plate 8 can also be made of a non-metallic sheet, such as a flexible resin sheet. The width of the slot 82 should ensure that the swing arm 85, the sealing part 83, and the mounting part 84 do not interfere with each other during the use of the valve plate 8. Preferably, the width H of the swing arm 85 can be greater than or equal to 1.3 mm and less than or equal to 5 mm, and the width of the slot 82 can be greater than or equal to 1 mm and less than or equal to 4 mm. If the swing arm 85 is too narrow, it will cause the valve plate 8 to fatigue and deform after a period of use; if the swing arm 85 is too wide, it will affect the sensitivity of the valve opening and closing of the sealing part 83. The slot 82 can be formed by stamping a metal sheet. In other words, the valve plate 8 is formed by stamping a single piece of metal sheet.
[0056] like Figures 13-16 As shown, in use, the valve plate 8 can be installed above the sealing surface of the valve seat 22. Specifically, the valve seat 22 is provided with a valve plate mounting groove 202, the valve plate 8 is installed in the valve plate mounting groove 202, the mounting part 84 is fixed by the fixing part 223 of the valve seat 22, and the sealing part 83 corresponds to the vent hole 201 of the valve seat 22.
[0057] Preferably, a flange 224 surrounding the vent hole 201 is provided on the sealing surface of the valve seat 22 corresponding to the sealing part 83, and the upper surface of the flange 224 constitutes the sealing surface of the valve seat 22.
[0058] When the valve plate 8 closes the vent hole 201, i.e. closes the upper port (also referred to as valve port) of the vent hole 201, the sealing portion 83 is pressed against the upper surface of the flange 224 by the elastic force of the swing arm 85, and at this time the height of the sealing portion 83 is higher than that of the fixed portion 223, thereby improving the sealing reliability of the valve plate 8 to the valve port. The valve plate 8 uses the elastic force of the swing arm 85 to press the sealing portion 83 against the sealing surface of the valve seat 22 to seal the upper port (valve port) of the vent hole 201.
[0059] When the pressure difference between the two sides of the valve plate 8 reaches a predetermined value, the pressure difference drives the valve plate 8 to open and close the valve port. For example, as shown in Figure 13 and Figure 15 When the pressure difference between the first space 1022 and the second space 1021 is less than a predetermined value, the sealing portion 83 is pressed against the sealing surface of the valve seat 22 by the elastic force of the swing arm 85, thereby sealing the valve port.
[0060] As shown in Figure 14 and Figure 16 When the pressure in the second space 1021 increases and the pressure difference with the first space 1022 reaches a predetermined value, the gas in the vent hole 201 pushes the sealing portion 83 upward and away from the sealing surface of the valve seat 22 against the elastic force of the swing arm 85, thereby opening the valve port, and the gas in the vent hole 201 enters the first space 1022 through the slot 82. When the pressure in the second space 1021 decreases, the elastic force of the swing arm 85 overcomes the force of the gas in the vent hole 201 on the sealing portion 83 to make the sealing portion 83 translate downward and press against the sealing surface of the valve seat 22, thereby closing the valve port.
[0061] Compared with the valve plate of the related art, the valve plate of the embodiment of the utility model has uniform opening height, large flow area at the same opening height, smooth intake, and small air resistance. In the process of opening and closing the valve port by the sealing portion, the sealing portion quickly moves away from or presses against the sealing surface of the valve port under the action of the elastic force of the swing arm and the gas pressure difference, thereby improving the response speed of the valve plate. In addition, the central symmetry or uniform arrangement of the swing arm ensures that the sealing portion is uniformly stressed, not only improving the sensitivity of the valve plate in opening and closing, but also reducing the fatigue of the valve plate after multiple opening and closing, thereby prolonging the service life of the valve plate.
[0062] In addition, compared with the width variation of the swing arm in the related art, the width of the swing arm of the embodiment of the utility model is generally uniform in the length direction, thereby improving the central symmetry or uniformity along the circumference of the sealing portion, improving the stress uniformity of the sealing portion, and improving the parallelism of the sealing portion to the sealing surface of the valve seat when opening and closing the valve port, thereby further improving the uniformity of the valve port in opening and closing, and providing the corresponding speed and sensitivity.
[0063] In summary, the valve piece of the embodiment of the present application is instantaneously changed when opening and closing the valve port, has fast response speed, high sensitivity, the sealing surface of the vent hole of the sealing part and the valve seat is always parallel, the valve port is uniformly opened and closed, the flow area is large, the sealing effect is good, and the service life of the valve piece is long.
[0064] The valve piece of the first specific embodiment of the present application is described below in combination with the drawings.
[0065] As shown in Figure 1 and Figure 2 , the valve piece 8 of the first specific embodiment of the present application comprises a piece body 81, and the piece body 81 is circular. The piece body 81 can be a stainless steel piece with a thickness of 0.1 mm. The piece body 81 is provided with two slot joints 82, and the two slot joints 82 are centrally symmetrical to each other with respect to the center of the piece body 81. The slot joint 82 penetrates the piece body 81 along the thickness direction of the piece body 81.
[0066] Each slot joint 82 comprises an outer slot joint section 821, an inner slot joint section 822 and a connecting slot joint section 823, the connecting slot joint section 823 corresponds to the first connecting part 86 and the second connecting part 87, the outer slot joint section 821 and the inner slot joint section 822 are both circular arc-shaped, and the connecting slot joint section 823 is composed of a plurality of circular arc sections with different protruding directions and smoothly connected to each other. The central angles θ of the inner slot joint section 822 and the outer slot joint section 821 are equal, and the central angle θ is greater than or equal to 120 degrees and less than or equal to 150 degrees, for example, in the embodiment shown in Figure 1 and Figure 2 , the central angle θ is 120 degrees. The two ends of the connecting slot joint section 823 are connected to the outer slot joint section 821 and the inner slot joint section 822, respectively.
[0067] It can be understood that, according to the working medium and pressure borne by the valve piece 8, the physical properties of the material of the valve piece 8, the working performance of the valve piece 8 and other factors, the thickness T of the piece body 81, the width H of the swing arm 85 and the size of the central angle θ can be adjusted to ensure that the valve piece 8 can quickly open or close the valve port and will not be plastically deformed or broken under the maximum working pressure.
[0068] As shown in Figure 1 and Figure 2 , the two slot joints 82 divide the piece body 81 into a sealing part 83, a mounting part 84 and two swing arms 85. The sealing part 83 is circular, the mounting part 84 is annular, and the mounting part 84 surrounds the sealing part 83 and is concentric with each other. The swing arm 85 is circular arc-shaped, and the width H of the swing arm 85 can be 5 mm. The first end of the swing arm 85 is connected to the sealing part 83 through the first connecting part 86, and the second end of the swing arm 85 is connected to the mounting part 84 through the second connecting part 87.
[0069] The two swing arms 85 are centrally symmetrical to each other relative to the center of the sealing part 83 and the mounting part 84. One of the swing arms 85 is located between the outer slot section 821 of one slot 82 and the inner slot section 822 of the other slot 82, and the other swing arm 85 is located between the inner slot section 822 of one slot 82 and the outer slot section 821 of the other slot 82. The swing arms 85 are connected to the sealing part 83 through the first connecting part 86 and connected to the mounting part 84 through the second connecting part 87, so that the width of the swing arms 85 can be more uniform, further improving the uniformity of the valve disc 8 opening the valve port.
[0070] As shown in Figure 13 and Figure 14 , the valve disc 8 is installed above the sealing surface of the valve seat 22, specifically, the upper surface of the valve seat 22 has a valve disc mounting groove 202, the peripheral wall of the valve disc mounting groove 202 is provided with a fixing part 223, and at least a part of the mounting part 84 is assembled between the fixing part 223 and the bottom surface of the valve disc mounting groove 202. The valve seat 22 vent hole 201 is located in the center of the valve seat 22, the upper port of the vent hole 201 constitutes the valve port, the bottom surface of the valve disc mounting groove 202 is provided with an annular flange 224 surrounding the vent hole 201, and the upper surface of the flange 224 constitutes the sealing surface of the valve seat 22. The sealing part 83 is pressed on the upper surface of the flange 224 by the elastic force of the swing arm 85.
[0071] When the pressure difference between the first space 1022 and the second space 1021 on both sides of the valve disc 8 reaches a predetermined value, the gas on the high pressure side acts on the sealing part 83 of the valve disc 8 through the valve seat 22 vent hole 201, the elastic force of the swing arm 85 is overcome, the sealing part 83 is translated upward to the side with lower gas pressure, the valve disc 8 opens the valve port, and the gas uniformly radiates to the four directions from the central area of the valve disc 8 through the slot 82. When the pressure difference decreases, the sealing part 83 is translated downward to the initial position under the elastic force of the swing arm 85, and the upper port (valve port) of the vent hole 201 is resealed.
[0072] The valve disc of the second specific embodiment of the present application will be described below in conjunction with the drawings.
[0073] As shown in Figure 3 , the valve disc 8 of the second specific embodiment of the present application includes a disc body 81, which is circular, and the disc body 81 can be a stainless steel sheet with a thickness of 0.1 mm. The disc body 81 is provided with two slots 82. The two slots 82 divide the disc body 81 into a sealing part 83, a mounting part 84 and two swing arms 85, and the width H of the swing arms 85 can be 1.3 mm.
[0074] The sealing part 83 is a circular ring, the mounting part 84 is a circle, the sealing part 83 surrounds the mounting part 84 and is concentric with each other, the mounting part 84 is provided with a mounting hole 841 in the center, and the valve plate 8 is fixed to the fixed part 223 of the valve seat 22 through the mounting hole 841. The other aspects of the valve plate 8 of the second specific embodiment of the utility model can be the same as the valve plate 8 of the first specific embodiment, and will not be repeated here.
[0075] As shown in the figure, Figure 15 and Figure 16 The valve plate 8 of the second specific embodiment of the utility model in use, the bottom surface of the valve plate mounting groove 202 of the valve seat 22 has a fixed part 223, the fixed part 223 cooperates with the mounting hole 841 of the valve plate 8, so as to fix the valve plate 8 to the valve seat 22. The vent hole 201 of the valve seat 22 can be configured as an annular hole surrounding the fixed part 223 or a plurality of holes uniformly arranged along the circumference of the fixed part 223, and the bottom surface of the valve plate mounting groove 202 is provided with a flange 224 surrounding the vent hole 201, and the upper surface of the flange 224 constitutes the sealing surface of the valve seat 22.
[0076] When the valve plate 8 opens the valve port, the gas enters the first space 1022 from the second space 1021 through the vent hole 201 and the slot 82.
[0077] The valve plate of the third specific embodiment of the utility model will be described below with reference to the drawings.
[0078] As shown in the figure, Figure 4 The valve plate 8 of the third specific embodiment of the utility model comprises a plate body 81, and the plate body 81 is a circle. The thickness T of the plate body 81 can be 0.3mm. The plate body 81 is provided with three slots 82, and the three slots 82 are uniformly arranged along the circumference of the plate body 81 around the center of the plate body 81. The slot 82 penetrates the plate body 81 along the thickness direction of the plate body 81.
[0079] Each slot 82 comprises an outer slot section 821, an inner slot section 822 and a connecting slot section 823. The outer slot section 821 and the inner slot section 822 are both circular arcs, the central angles θ of the inner slot section 822 and the outer slot section 821 are equal, the central angle θ is greater than or equal to 60 degrees and less than or equal to 90 degrees, and the connecting slot section 823 is connected between the outer slot section 821 and the inner slot section 822.
[0080] Three slots 82 divide the sheet 81 into a sealing part 83, a mounting part 84 and three swing arms 85, and the width H of the swing arms 85 can be 4 mm. The sealing part 83 is circular, the mounting part 84 is annular, the mounting part 84 surrounds the sealing part 83 and they are concentric with each other. The swing arms 85 are circular arcs, the first end of the swing arms 85 is connected with the sealing part 83 through a first connecting part 86, the second end of the swing arms 85 is connected with the mounting part 84 through a second connecting part 87, and the three swing arms 85 are uniformly arranged along the circumference of the sealing part 83 around the center of the sealing part 83. Each swing arm 85 is located between the outer slot segment 821 of one slot 82 and the inner slot segment 822 of the adjacent slot 82.
[0081] The valve plate 8 of the third specific embodiment of the utility model can be similar to the valve plate 8 of the above-mentioned embodiments in other aspects, and details are not repeated here.
[0082] The valve plate of the fourth specific embodiment of the utility model is described below in combination with the drawings.
[0083] As shown in the drawings, Figure 5 the valve plate 8 of the fourth specific embodiment of the utility model comprises a sheet 81, and the sheet 81 is provided with three slots 82, which divide the sheet 81 into a sealing part 83, a mounting part 84 and three swing arms 85. The sealing part 83 is annular, the mounting part 84 is circular, the sealing part 83 surrounds the mounting part 84 and they are concentric with each other, and the mounting part 84 is provided with a mounting hole 841 located at the center. Other aspects of the valve plate 8 of the fourth specific embodiment of the utility model can be the same as the valve plate 8 of the third specific embodiment, and details are not repeated here.
[0084] The valve plate of the fifth specific embodiment of the utility model is described below in combination with the drawings.
[0085] As shown in the drawings, Figure 6 the valve plate 8 of the fifth specific embodiment of the utility model comprises a sheet 81, and the sheet 81 is rectangular, and the thickness T of the sheet 81 can be 0.4 mm. The sheet 81 is provided with two slots 82, each of which is generally U-shaped, and the two slots 82 are centrally symmetric with respect to the center of the sheet 81, and the slots 82 penetrate the sheet 81 along the thickness direction of the sheet 81.
[0086] Each slot 82 comprises an outer slot segment 821, an inner slot segment 822 and a connecting slot segment 823. The outer slot segment 821, the inner slot segment 822 and the connecting slot segment 823 are all straight slots, the connecting slot segment 823 is connected between the outer slot segment 821 and the inner slot segment 822, and the connecting slot segment 823 is arc-shaped transition between the outer slot segment 821 and the inner slot segment 822.
[0087] Two slots 82 divide the sheet 81 into a sealing portion 83, a mounting portion 84 and two swing arms 85. The sealing portion 83 is rectangular, and the mounting portion 84 is a rectangular ring, which is arranged around the sealing portion 83 and concentric with each other. The swing arms 85 are straight arms, and the width H of the swing arms 85 can be 1.45 mm.
[0088] The first end of the swing arm 85 is connected with the sealing portion 83 through a first connecting portion 86, and the second end of the swing arm 85 is connected with the mounting portion 84 through a second connecting portion 87, as shown in Figure 6 The width of the second connecting portion 87 gradually decreases from the mounting portion 84 to the swing arm 85, and the two swing arms 85 are centrally symmetric to each other relative to the center of the sealing portion 83. One of the swing arms 85 is located between the outer slot segment 821 of one slot 82 and the inner slot segment 822 of the other slot 82, and the other swing arm 85 is located between the inner slot segment 822 of one slot 82 and the outer slot segment 821 of the other slot 82.
[0089] The valve sheet 8 of the fifth specific embodiment of the utility model is similar to the valve sheet 8 of the above-mentioned embodiments in other aspects, and will not be described here.
[0090] The valve sheet of the sixth specific embodiment of the utility model will be described below with reference to the drawings.
[0091] As shown in Figure 7 The valve sheet 8 of the sixth specific embodiment of the utility model includes a sheet 81, and the sheet 81 is provided with two slots 82, which divide the sheet 81 into a sealing portion 83, a mounting portion 84 and two swing arms 85. The sealing portion 83 is a rectangular ring, and the mounting portion 84 is rectangular, and the sealing portion 83 is arranged around the mounting portion 84 and concentric with each other, and the mounting portion 84 is provided with a mounting hole 841 located at the center. The valve sheet 8 of the sixth specific embodiment of the utility model can be the same as the valve sheet 8 of the above-mentioned fifth specific embodiment in other aspects, and will not be described here.
[0092] The valve sheet of the seventh specific embodiment of the utility model will be described below with reference to the drawings.
[0093] As shown in Figure 8 The valve sheet 8 of the seventh specific embodiment of the utility model includes a sheet 81, and the sheet 81 is rectangular, and the thickness T of the sheet 81 can be 0.3 mm. The sheet 81 is provided with two slots 82, and the slots 82 penetrate the sheet 81 along the thickness direction of the sheet 81. The two slots 82 include a pair of first slots 824 and a pair of second slots 825, and the first slots 824 and the second slots 825 are both generally L-shaped.
[0094] The first slot 824 includes a first outer slot segment 8241 and a first inner slot segment 8242, the second slot 825 includes a second outer slot segment 8251 and a second inner slot segment 8252, the second outer slot segment 8251 includes a second outer slot narrow segment 82511 and a second outer slot wide segment 82512, and the second outer slot wide segment 82512 is connected between the second outer slot narrow segment 82511 and the second inner slot segment 8252.
[0095] The two slots 82 divide the sheet 81 into a sealing portion 83, a mounting portion 84 and two swing arms 85. The sealing portion 83 is rectangular, the mounting portion 84 is a rectangular ring, and the mounting portion 84 surrounds the sealing portion 83 and is concentric with each other. The swing arm 85 is a straight arm, and the width H of the swing arm 85 can be 3mm.
[0096] The first end of the swing arm 85 is connected to the sealing portion 83 through the first connecting portion 86, and the second end of the swing arm 85 is connected to the mounting portion 84 through the second connecting portion 87, and the width of the second connecting portion 87 gradually decreases from the mounting portion 84 to the swing arm 85. The two swing arms 85 include a pair of first swing arms 851 and a pair of second swing arms 852, and the pair of first swing arms 851 are centrally symmetric to each other with respect to the center of the sealing portion 83, and the pair of second swing arms 852 are centrally symmetric to each other with respect to the center of the sealing portion 83. The first swing arm 851 is located between the first outer slot segment 8241 and the second inner slot segment 8252, and the second swing arm 852 is located between the first inner slot segment 8242 and the second outer slot narrow segment 82511.
[0097] The two first connecting portions 86 between the first swing arm 851 and the sealing portion 83 are respectively located at two opposite corners of the sealing portion 83, and the two first connecting portions 86 between the second swing arm 852 and the sealing portion 83 are respectively located at the middle portions of the opposite sides of the sealing portion 83.
[0098] The valve sheet 8 of the seventh specific embodiment of the utility model is similar to the valve sheet 8 of the above-mentioned embodiments in other aspects, and will not be repeated here.
[0099] The valve sheet of the eighth specific embodiment of the utility model will be described below with reference to the drawings.
[0100] As Figure 9As shown, the valve plate 8 of the eighth embodiment of this utility model includes a plate body 81. The plate body 81 has two slots 82, which divide the plate body 81 into a sealing part 83, a mounting part 84, and two swing arms 85. The sealing part 83 is rectangular and annular, and the mounting part 84 is rectangular. The sealing part 83 surrounds the mounting part 84 and is concentric with it. The mounting part 84 has an assembly hole 841 located at its center. Other aspects of the valve plate 8 of the eighth embodiment of this utility model are the same as those of the valve plate 8 of the seventh embodiment described above, and will not be repeated here.
[0101] The valve plate of the ninth specific embodiment of this utility model is described below with reference to the accompanying drawings.
[0102] like Figure 10 As shown, the valve plate 8 of the ninth specific embodiment of this utility model includes a plate body 81, which is rectangular and has a thickness T of 0.35 mm. The plate body 81 is provided with two slots 82, which penetrate the plate body 81 along the thickness direction.
[0103] The two slots 82 include a pair of first slots 824 and a pair of second slots 825, both of which are generally U-shaped. The pair of first slots 824 are centrally symmetrical with respect to the center of the sheet 81, and the pair of second slots 825 are also centrally symmetrical with respect to the center of the sheet 81. The first slot 824 includes a first outer slot segment 8241, a first inner slot segment 8242, and a first connecting slot segment 8243, which connects the first outer slot segment 8241 and the first inner slot segment 8242. The second slot 825 includes a second outer slot segment 8251, a second inner slot segment 8252, and a second connecting slot segment 8253, which connects the second outer slot segment 8251 and the second inner slot segment 8252.
[0104] The second connecting groove segment 8253 includes a second connecting groove narrow segment 82531 and a second connecting groove wide segment 82532. The second connecting groove narrow segment 82531 is connected to the second outer groove segment 8251, and the second connecting groove wide segment 82532 is connected to the second inner groove segment 8252.
[0105] Two slots 82 divide the sheet 81 into a sealing part 83, a mounting part 84, and two swing arms 85. The sealing part 83 is rectangular, and the mounting part 84 is a rectangular ring, with the mounting part 84 surrounding the sealing part 83 and concentric with each other.
[0106] The swing arm 85 is L-shaped, the width H of the swing arm 85 can be 3.5 mm, the first end of the swing arm 85 is connected with the sealing part 83 through the first connecting part 86, the second end of the swing arm 85 is connected with the mounting part 84 through the second connecting part 87, and the width of the second connecting part 87 gradually decreases from the mounting part 84 to the swing arm 85. The two swing arms 85 include a pair of first swing arms 851 and a pair of second swing arms 852, the pair of first swing arms 851 are centrally symmetrical to each other relative to the center of the sealing part 83, and the pair of second swing arms 852 are centrally symmetrical to each other relative to the center of the sealing part 83.
[0107] One leg of the first swing arm 851 is located between the first connecting slot section 8243 and the second inner slot section 8252, and the other leg of the first swing arm 851 is located between the first outer slot section 8241 and the second connecting slot section 8253. One leg of the second swing arm 852 is located between the first inner slot section 8242 and the second connecting slot section 82531, and the other leg of the second swing arm 852 is located between the second outer slot section 8251 and the first connecting slot section 8243.
[0108] The two first connecting parts 86 between the first swing arm 851 and the sealing part 83 are respectively located at two opposite corners of the sealing part 83, and the two first connecting parts 86 between the second swing arm 852 and the sealing part 83 are respectively located at the middle portions of the opposite sides of the sealing part 83.
[0109] The valve plate 8 of the ninth specific embodiment of the utility model is similar to the valve plate 8 of the above-mentioned embodiments in other aspects, and will not be described here.
[0110] The valve plate of the tenth specific embodiment of the utility model will be described below with reference to the drawings.
[0111] As shown in the drawings, Figure 11 The valve plate 8 of the tenth specific embodiment of the utility model includes a plate body 81, the plate body 81 is provided with two slots 82, and the two slots 82 divide the plate body 81 into a sealing part 83, a mounting part 84 and two swing arms 85. The sealing part 83 is a rectangular ring, the mounting part 84 is a rectangle, the sealing part 83 is arranged around the mounting part 84 and concentric with each other, and the mounting part 84 is provided with a mounting hole 841 located at the center thereof. The valve plate 8 of the tenth specific embodiment of the utility model can be the same as the valve plate 8 of the ninth specific embodiment described above in other aspects, and will not be described here.
[0112] The valve plate of the eleventh specific embodiment of the utility model will be described below with reference to the drawings.
[0113] As shown in the drawings, Figure 12 The valve plate 8 of the eleventh specific embodiment of the utility model includes a plate body 81, the plate body 81 is generally rectangular, and the thickness T of the plate body 81 is greater than or equal to 0.1 mm and less than or equal to 0.5 mm.
[0114] The sheet body 81 is provided with two slots 82 which penetrate the sheet body 81 along the thickness direction of the sheet body 81. The two slots 82 include a pair of first slots 824 and a pair of second slots 825, and the first slots 824 and the second slots 825 are both generally L-shaped. The pair of first slots 824 are centrally symmetrical to each other with respect to the center of the sheet body 81, and the pair of second slots 825 are centrally symmetrical to each other with respect to the center of the sheet body 81.
[0115] The first slot 824 includes a first outer slot segment 8241 and a first inner slot segment 8242, the second slot 825 includes a second outer slot segment 8251 and a second inner slot segment 8252, and the second outer slot segment 8251 includes a second outer slot narrow segment 82511 and a second outer slot wide segment 82512, and the second outer slot wide segment 82512 is connected with the second inner slot segment 8252.
[0116] The two slots 82 divide the sheet body 81 into a sealing part 83, a mounting part 84 and four swing arms 85. The sealing part 83 is rectangular, the mounting part 84 includes four mounting sub-parts which are generally rectangular and are arranged at intervals around the circumferential direction of the sealing part 83, and the four mounting sub-parts include a pair of first mounting sub-parts 842 and a pair of second mounting sub-parts 843, and the pair of first mounting sub-parts 842 are centrally symmetrical to each other with respect to the center of the sealing part 83, and the pair of second mounting sub-parts 843 are centrally symmetrical to each other with respect to the center of the sealing part 83.
[0117] The swing arm 85 is L-shaped, and the width H of the swing arm 85 can be 4 mm. The four swing arms 85 include a pair of first swing arms 851 and a pair of second swing arms 852, and the pair of first swing arms 851 correspond to the pair of first mounting sub-parts 842 in one-to-one correspondence, the first end of the first swing arm 851 is connected with the sealing part 83 through the first connecting part 86, and the second end of the first swing arm 851 is connected with the first mounting sub-part 842 through the second connecting part 87. The pair of second swing arms 852 correspond to the pair of second mounting sub-parts 843 in one-to-one correspondence, the first end of the second swing arm 852 is connected with the sealing part 83 through the first connecting part 86, and the second end of the second swing arm 852 is connected with the second mounting sub-part 843 through the second connecting part 87.
[0118] One leg of the first swing arm 851 is located between the first outer slot segment 8241 and the second inner slot segment 8252, and the other leg of the first swing arm 851 is adjacent to and located outside the second outer slot segment 8251. One leg of the second swing arm 852 is located between the first inner slot segment 8242 and the second outer slot narrow segment 82511, and the other leg of the second swing arm 852 is adjacent to and located outside the first outer slot segment 8241.
[0119] The valve sheet 8 of the eleventh specific embodiment of the utility model is similar to the valve sheet 8 of the above-mentioned embodiments in other aspects, and details are not repeated here.
[0120] The air pump of the embodiment of the present application is described below in combination with the drawings.
[0121] As shown in the drawings, the air pump of the embodiment of the present application comprises a cylinder 1 and a piston slidably arranged in the cylinder 1, the piston constituting a valve seat 22, and the valve plate 8 of the above-mentioned embodiment of the present application being mounted on the piston. The piston defines a compression chamber (first space 1022) in the cylinder 1, and a vent hole 201 is arranged in the piston, the upper end opening of the vent hole 201 constituting a valve port and being in communication with the compression chamber, and the lower end of the vent hole 201 being in communication with a second space 1021 (for example, the outside or another compression chamber). Figures 13-16 When the piston moves downward in the cylinder 1, the air pressure in the second space 1021 is greater than the air pressure in the first space 1022, so as to overcome the elastic force of the swing arm 85 to lift the sealing part 83 of the valve plate 8 away from the sealing surface of the piston, and the gas enters the first space 1022 from the second space 1021 through the vent hole 201. When the piston moves upward in the cylinder 1, the gas in the first space 1022 is gradually compressed, and the air pressure in the first space 1022 is gradually greater than the air pressure in the second space 1021, and the sealing part 83 of the valve plate 8 is pressed onto the sealing surface of the piston with the assistance of the elastic force of the swing arm 85, so as to complete the compression of the gas.
[0122] The air pump of the embodiment of the present application has the advantages that the valve plate opening and closing response is timely, the sensitivity is high, the valve port opening and closing is uniform, and compared with the related art, the valve port opening area of the embodiment of the present application is increased at the same height of the sealing part and the sealing surface, so as to improve the working efficiency of the air pump. Moreover, the service life of the valve plate is long, and the reliability of the air pump working is improved.
[0123] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0124]
[0125] In addition, the terms "first", "second", "third", etc. are used herein only to describe different instances, and are not to be construed as indicating or implying relative importance or a specific number of the technical features indicated. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0126] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0127] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0128] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the description, the illustrative representation of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.
[0129] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.
Claims
1. A valve plate, characterized in that, The device includes a sheet body with a groove extending through the sheet body along its thickness, dividing it into a sealing portion, a mounting portion, and multiple swing arms. The sealing portion and the mounting portion are concentric and arranged around each other. The width of each swing arm is approximately constant along its length. A first end of each swing arm is connected to the sealing portion, and a second end of each swing arm is connected to the mounting portion. When the number of swing arms is even, the multiple swing arms are arranged in pairs, and two swing arms in the same pair are centrally symmetrical with respect to the center of the sealing portion. When the number of swing arms is odd, the multiple swing arms are evenly arranged around the center of the sealing portion along its circumference.
2. The valve plate according to claim 1, characterized in that, One of the sealing part and the mounting part is annular and the other is circular, with the annular part surrounding the circular part. The swing arm is arc-shaped, and there are two swing arms that are centrally symmetrical with respect to the center of the sealing part. The first end of each swing arm is connected to the sealing part through a first connecting part, and the second end of each swing arm is connected to the mounting part through a second connecting part. There are two slots, and each slot includes an arc-shaped outer slot segment, an arc-shaped inner slot segment, and a connecting slot segment connecting the outer slot segment and the inner slot segment. One swing arm is located between the outer slot segment of one slot and the inner slot segment of the other slot, and the other swing arm is located between the inner slot segment of one slot and the outer slot segment of the other slot.
3. The valve plate according to claim 2, characterized in that, The central angle (θ) of the inner groove segment and the outer groove segment is equal, and the central angle is greater than or equal to 120 degrees and less than or equal to 150 degrees.
4. The valve plate according to claim 1, characterized in that, One of the sealing part and the mounting part is annular and the other is circular, with the annular part surrounding the circular part. The swing arm is arc-shaped, and there are three swing arms evenly arranged around the center of the sealing part along its circumference. The first end of each swing arm is connected to the sealing part through a first connecting part, and the second end of each swing arm is connected to the mounting part through a second connecting part. There are three slots, and each slot includes an arc-shaped outer slot segment, an arc-shaped inner slot segment, and a connecting slot segment connecting the outer slot segment and the inner slot segment. Each swing arm is located between the outer slot segment of one slot and the inner slot segment of another slot.
5. The valve plate according to claim 1, characterized in that, One of the sealing part and the mounting part is rectangular and the other is rectangular, the rectangular annulus surrounds the rectangle, the swing arm is a straight arm, there are two swing arms and they are centrally symmetrical with respect to the center of the sealing part, there are two slots and they are generally U-shaped, each slot includes an outer slot segment, an inner slot segment and a connecting slot segment connecting the outer slot segment and the inner slot segment, one swing arm is located between the outer slot segment of one slot and the inner slot segment of another slot, and the other swing arm is located between the inner slot segment of one slot and the outer slot segment of the other slot.
6. The valve plate according to claim 1, characterized in that, One of the sealing portion and the mounting portion is rectangular and the other is rectangular, with the rectangular annulus surrounding the rectangular portion. The swing arm is a straight arm and includes a pair of first swing arms and a pair of second swing arms. The groove is generally L-shaped and includes a pair of first grooves and a pair of second grooves. The pair of first grooves are centrally symmetrical with respect to the center of the sealing portion, and the pair of second grooves are centrally symmetrical with respect to the center of the sealing portion. The first groove includes a first outer groove segment and a first inner groove segment. The second groove includes a second outer groove segment and a second inner groove segment. The second outer groove segment includes a narrow section and a wide section connecting the narrow section and the inner section. The first swing arm is located between the first outer groove segment and the second inner groove segment, and the second swing arm is located between the narrow section of the second outer groove segment and the first inner groove segment.
7. The valve plate according to claim 1, characterized in that, One of the sealing portion and the mounting portion is rectangular and the other is rectangular, the rectangular annular portion surrounding the rectangular portion; the swing arm is generally L-shaped, and the swing arm includes a pair of first swing arms and a pair of second swing arms. The groove is generally U-shaped and includes a pair of first grooves and a pair of second grooves. The pair of first grooves are centrally symmetrical with respect to the center of the sealing part, and the pair of second grooves are centrally symmetrical with respect to the center of the sealing part. The first groove includes a first outer groove segment, a first inner groove segment, and a first connecting groove segment connecting the first outer groove segment and the first inner groove segment. The second groove segment includes a second outer groove segment, a second inner groove segment, and a second connecting groove segment connecting the second outer groove segment and the second inner groove segment. The second connecting groove segment includes a second connecting groove narrow segment connected to the second outer groove segment and a second connecting groove wide segment connected to the second inner groove segment. One leg of the first swing arm is located between the first connecting groove segment and the second inner groove segment, and the other leg of the first swing arm is located between the first outer groove segment and the second connecting groove segment; One leg of the second swing arm is located between the first inner groove section and the narrow section of the second connecting groove, and the other leg of the second swing arm is located between the second outer groove section and the first connecting groove section.
8. The valve plate according to claim 1, characterized in that, The sealing part is generally rectangular, and the mounting part includes four generally rectangular mounting sub-parts arranged circumferentially around the sealing part. The swing arms are L-shaped, and there are four swing arms, including a pair of first swing arms and a pair of second swing arms. The four mounting sub-parts are connected to the four swing arms in a one-to-one correspondence. The slot is generally L-shaped and includes a pair of first slots and a pair of second slots. The first slot includes a first inner slot segment and a first outer slot segment. The second slot includes a second inner slot segment and a second outer slot segment. The second outer slot segment includes a narrow section and a wide section connected to the second inner slot segment. One leg of the first swing arm is located between the first outer groove segment and the second inner groove segment, and the other leg of the first swing arm is adjacent to the second outer groove segment and located outside the second outer groove segment; One leg of the second swing arm is located between the first inner groove section and the second outer groove narrow section, and the other leg of the second swing arm is adjacent to the first outer groove section and located outside the first outer groove section.
9. The valve plate according to any one of claims 1-8, characterized in that, The width H of the swing arm is greater than or equal to 1.3 mm and less than or equal to 5 mm, and the thickness T of the plate is greater than or equal to 0.1 mm and less than or equal to 0.5 mm.
10. An air pump, characterized in that, Includes the valve plate according to any one of claims 1-9.