Double-cylinder inflator pump core

Abstract

The utility model relates to the field of air pumps, and discloses a double-cylinder inflator pump machine core which can enhance the air leakage prevention effect of air cylinders. The device comprises a rack, double cylinder bodies; the first driving assembly comprises a first gear, a first piston rod, a first elastic piece and a first spring, the first gear is rotatably arranged on the rack and drives the first piston rod to move up and down in the first air cavity, the first elastic piece is arranged in the first air hole and located on the side close to the third air cavity, and the first spring is arranged in the third air cavity and connected with the first elastic piece; the first spring is driven by elastic force to enable the first elastic sheet to move from top to bottom; a second drive assembly similar to the first drive assembly; the rotating power piece is provided with a driving wheel, and the driving wheel is meshed with the first gear and the second gear.

Description

Technical Field

[0001] The utility model relates to the field of air pumps, in particular to a double-cylinder inflator core. Background Art

[0002] An air pump is a device that removes air from or adds air to a closed space. Air pumps are mainly divided into electric air pumps, manual air pumps and foot-operated air pumps. Among them, an electric air pump is an air pump powered by electricity, which continuously compresses air through electricity to generate air pressure, and is mainly used for pneumatic caulking, vehicle inflation, etc.

[0003] A check valve is generally arranged in a double-cylinder block to realize the transportation of gas. However, compared with a single-cylinder air pump, the existing double-cylinder air pump has a greater air pressure. As long as there is a little gap in the check valve structure, there will be slight air leakage of the check valve at low pressure, which affects the inflation effect. Content of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a double-cylinder inflator core, which can enhance the air leakage prevention effect of the cylinder.

[0005] The double-cylinder inflator core according to an embodiment of the utility model includes:

[0006] A frame;

[0007] A double-cylinder block, arranged on the frame, the double-cylinder block is provided with a first air chamber, a second air chamber and a third air chamber, a first air hole is arranged between the first air chamber and the third air chamber, a second air hole is arranged between the second air chamber and the third air chamber, and the third air chamber is provided with an air outlet;

[0008] A first driving component, including a first gear, a first piston rod, a first elastic sheet and a first spring, the first gear is rotatably arranged on the frame, the first gear drives the first piston rod to move up and down in the first air chamber, the first elastic sheet is arranged at the first air hole and on the side close to the third air chamber, the first spring is arranged in the third air chamber and connects the first elastic sheet, and the first spring drives the first elastic sheet to move from top to bottom through elastic force;

[0009] The second driving component includes a second gear, a second piston rod, a second elastic piece, and a second spring. The second gear is rotatably disposed on the double cylinder block. The second gear drives the second piston rod to move up and down in the second air chamber. The second elastic piece is disposed in the second air hole and on the side close to the third air chamber. The second spring is disposed in the third air chamber and connects the second elastic piece. The second spring drives the second elastic piece to move from top to bottom through elastic force. The axes of the first gear and the second gear are arranged in the same way. The connection positions of the first gear and the first piston rod and the connection positions of the second gear and the second piston rod are symmetrically arranged with the axis as the center.

[0010] The rotary power member is provided with a driving wheel, and the driving wheel meshes with the first gear and the second gear.

[0011] According to some embodiments of the present invention, a first connection hole and a second connection hole are provided in the middle of the third air chamber. One end of the first elastic piece is connected to the first connection hole, and one end of the second elastic piece is connected to the second connection hole. The other ends of the first elastic piece and the second elastic piece are disposed in the direction away from the middle.

[0012] According to some embodiments of the present invention, the third air chamber is provided with a first groove, and the first spring is disposed in the first groove.

[0013] According to some embodiments of the present invention, the third air chamber is provided with a second groove, and the second spring is disposed in the second groove.

[0014] According to some embodiments of the present invention, the first elastic piece is provided with a first annular protrusion. The first annular protrusion includes a protruding part on the front side and a recessed part on the back side. The protruding part of the first annular protrusion can be inserted into the first air hole or the inner wall of the third air chamber, and the recessed part of the first annular protrusion is inserted by the first spring.

[0015] According to some embodiments of the present invention, the second elastic piece is provided with a second annular protrusion. The second annular protrusion includes a protruding part on the front side and a recessed part on the back side. The protruding part of the second annular protrusion can be inserted into the second air hole or the inner wall of the third air chamber, and the recessed part of the second annular protrusion is inserted by the second spring.

[0016] According to some embodiments of the present invention, both the first gear and the second gear are straight teeth, and the teeth of the first gear and the second gear are arranged along the radial direction.

[0017] According to some embodiments of the present invention, a cooling fan is provided at the end of the rotary power member.

[0018] According to some embodiments of the present utility model, it further includes a pressure relief valve, and the pressure relief valve is used to connect to the third air chamber.

[0019] According to some embodiments of the present utility model, the pressure relief valve includes:

[0020] A cover plate, which is arranged in the third air chamber;

[0021] A third spring, which is arranged in the third air chamber, the third spring is connected to the cover plate, and the third spring drives the cover plate to move towards the direction close to the third air chamber through elastic force;

[0022] A rubber ring, which is arranged between the cover plate and the double cylinder body.

[0023] The embodiments of the present utility model at least have the following beneficial effects:

[0024] By driving the first gear and the second gear to rotate through a rotating power member, the first gear and the second gear respectively drive the first piston rod and the second piston rod to move up and down in the first air chamber and the second air chamber. When the first piston rod moves upward, the air flow can push the first elastic sheet and the first spring, so that a gap is formed between the first elastic sheet and the first air hole, and the gas flows from the first air chamber to the third air chamber, and the air flow is discharged from the air outlet. When the first piston rod moves downward, the air pressure in the first chamber is relatively low, and the gas in the second air chamber of the third air chamber enters the third air chamber. The air pressure in the third air chamber is relatively large, and the elastic sheet is pressed down, and the first spring returns to its original position. The first spring drives the first elastic sheet to move from top to bottom through elastic force, providing a downward pressure for the first elastic sheet. Coupled with the pressure formed by the air pressure difference between the first air chamber and the third air chamber, the first elastic sheet can completely fit the air outlet without gaps, playing a role in preventing air leakage. The second piston rod is the same as the first piston rod; the axes of the first gear and the second gear are arranged in the same way, and the connection positions of the first gear and the first piston rod and the connection positions of the second gear and the second piston rod are symmetrically arranged with the axis as the center. When the first piston rod on the first gear reaches the lowest position, the second piston of the second gear is located at the highest position, and the first air chamber and the second air chamber can alternately supply gas to the third air chamber, improving the inflation efficiency.

[0025] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0027] Figure 1 It is a schematic diagram of the overall structure of the double-cylinder inflator movement in the embodiment of the present utility model;

[0028] Figure 2 is Figure 1 a schematic semi-sectional structure diagram of the double-cylinder air pump movement shown;

[0029] Figure 3 is Figure 2 a schematic enlarged partial structure diagram of the dashed part shown

[0030] Figure 4 is Figure 1 a schematic sectional structure diagram of the double-cylinder air pump movement shown after being cut along the third air cavity.

[0031] Reference numerals:

[0032] frame 100;

[0033] double cylinder block 200, first air cavity 210, first air hole 211, second air cavity 220, second air hole 221, third air cavity 230, first connection hole 231, second connection hole 232, first groove 233, second groove 234, air outlet 240;

[0034] first drive assembly 300, first gear 310, first piston rod 320, first elastic sheet 330, first annular protrusion 331, first spring 340

[0035] second drive assembly 400, second gear 410, second piston rod 420, second elastic sheet 430, second annular protrusion 431, second spring 440;

[0036] rotary power member 500, drive wheel 510, heat dissipation fan 520;

[0037] pressure relief valve 600, cover plate 610, third spring 620, rubber ring 630. Detailed implementation manners

[0038] The following content will describe several embodiments of the present invention, including the embodiments corresponding to the drawings. It can be understood that the drawings are used to assist in understanding the technical features and technical solutions of the present invention, and should not be construed as limiting the protection scope of the present invention.

[0039] The following will clearly and completely describe the concept, specific structure and technical effects generated by the present invention in combination with the embodiments and the drawings, so as to fully understand the purpose, solution and effects of the present invention. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0040] It should be noted that unless otherwise clearly defined, when a feature is referred to as "fixed", "connected", or "installed" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. The terms "fixed", "connected", "installed", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in this utility model in combination with the specific content of the technical solution.

[0041] It should be noted that the descriptions of the orientation or positional relationships indicated by up, down, left, right, top, bottom, front, back, inside, outside, etc. used in this utility model are based on the orientation or positional relationships in the drawings or embodiments, and are only for the convenience of describing this utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to this utility model.

[0042] It should be noted that the term "and / or" used in this utility model includes any combination of one or more of the related listed items. The meaning of several is one or more, and the meaning of multiple is two or more. Understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number.

[0043] It should be noted that if the first and second are described in this utility model, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0044] It should be noted that unless otherwise clearly defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art of this technology. The terms used in the description of this specification are only for describing specific embodiments, rather than for limiting this utility model.

[0045] Referring to Figures 1-4 , a basic embodiment of the first aspect of this utility model provides a double-cylinder air pump movement, including:

[0046] A frame 100;

[0047] A double-cylinder body 200, arranged on the frame 100. The double-cylinder body 200 is provided with a first air chamber 210, a second air chamber 220, and a third air chamber 230. A first air hole 211 is provided between the first air chamber 210 and the third air chamber 230, a second air hole 221 is provided between the second air chamber 220 and the third air chamber 230, and an air outlet 240 is provided in the third air chamber 230;

[0048] The first driving assembly 300 includes a first gear 310, a first piston rod 320, a first elastic piece 330, and a first spring 340. The first gear 310 is rotatably disposed on the frame 100. The first gear 310 drives the first piston rod 320 to move up and down in the first air chamber 210. The first elastic piece 330 is disposed at the first air hole 211 and on the side close to the third air chamber 230. The first spring 340 is disposed in the third air chamber 230 and is connected to the first elastic piece 330. The first spring 340 drives the first elastic piece 330 to move from top to bottom through elastic force.

[0049] The second driving assembly 400 includes a second gear 410, a second piston rod 420, a second elastic piece 430, and a second spring 440. The second gear 410 is rotatably disposed on the double cylinder block 200. The second gear 410 drives the second piston rod 420 to move up and down in the second air chamber 220. The second elastic piece 430 is disposed at the second air hole 221 and on the side close to the third air chamber 230. The second spring 440 is disposed in the third air chamber 230 and is connected to the second elastic piece 430. The second spring 440 drives the second elastic piece 430 to move from top to bottom through elastic force. The axes of the first gear 310 and the second gear 410 are arranged in the same way, and the connection positions of the first gear 310 and the first piston rod 320 and the connection positions of the second gear 410 and the second piston rod 420 are symmetrically arranged with the axis as the center.

[0050] The rotary power component 500 is provided with a driving wheel 510. The driving wheel 510 meshes with the first gear 310 and the second gear 410.

[0051] According to the embodiments of the present utility model, by setting it in this way, at least the following effects can be achieved. The rotation power member 500 drives the first gear 310 and the second gear 410 to rotate. The first gear 310 and the second gear 410 respectively drive the first piston rod 320 and the second piston rod 420 to move up and down in the first air chamber 210 and the second air chamber 220. When the first piston rod 320 moves upward, the air flow can push the first elastic piece 330 and the first spring 340, so that a gap is formed between the first elastic piece 330 and the first air hole 211, and the gas flows from the first air chamber 210 to the third air chamber 230, and the air flow is discharged from the air outlet 240. When the first piston rod 320 moves downward, the air pressure in the first chamber is relatively low, and the gas in the second air chamber 220 in the third air chamber 230 enters the third air chamber 230. The air pressure in the third air chamber 230 is relatively large, and the elastic piece is pressed down. The first spring 340 is reset, and the first spring 340 drives the first elastic piece 330 to move from top to bottom by the elastic force, providing a downward pressure for the first elastic piece 330. Coupled with the pressure formed by the air pressure difference between the first air chamber 210 and the third air chamber 230, the first elastic piece 330 can completely fit the air outlet 240 without a gap, playing a role in preventing air leakage. The second piston rod 420 is the same as the first piston rod 320; the axes of the first gear 310 and the second gear 410 are arranged in the same way, and the connection positions of the first gear 310 and the first piston rod 320 and the connection positions of the second gear 410 and the second piston rod 420 are symmetrically arranged with the axis as the center. When the first piston rod 320 on the first gear 310 reaches the lowest position, the second piston of the second gear 410 is located at the highest position. The first air chamber 210 and the second air chamber 220 can alternately supply gas to the third air chamber 230, improving the inflation efficiency.

[0052] It can be understood that the rotation power member 500 is a motor or a rotary cylinder.

[0053] In some embodiments, a first connection hole 231 and a second connection hole 232 are provided in the middle of the third air chamber 230. One end of the first elastic piece 330 is connected to the first connection hole 231, and one end of the second elastic piece 430 is connected to the second connection hole 232. The other ends of the first elastic piece 330 and the second elastic piece are arranged in a direction away from the middle. The first elastic piece 330 and the second elastic piece 430 are fixedly connected to the middle of the third air chamber 230. The other ends of the first elastic piece 330 and the second elastic piece extend towards opposite sides respectively. The flow directions of the air flow entering the third air chamber 230 from the first air chamber 210 and the second air chamber 220 also face opposite sides respectively. The air flow will not directly blow towards the other air chamber, preventing the air flow from passing through the gap of the elastic piece and causing the elastic piece to warp.

[0054] In some embodiments, the third air chamber 230 is provided with a first groove 233, and the first spring 340 is disposed in the first groove 233. The first spring 340 is disposed in the first groove 233, so that the first spring 340 is fixed in the first groove 233, improving the stability of the installation of the first spring 340.

[0055] In some embodiments, the third air chamber 230 is provided with a second groove 234, and the second spring 440 is disposed in the second groove 234. The second spring 440 is disposed in the second groove 234, so that the second spring 440 is fixed in the second groove 234, improving the stability of the installation of the second spring 440.

[0056] In some embodiments, the first elastic sheet 330 is provided with a first annular protrusion 331. The first annular protrusion 331 includes a protruding portion on the front surface and a recessed portion on the back surface. The protruding portion of the first annular protrusion 331 can be inserted into the first air hole 211 or the inner wall of the third air chamber 230, and the recessed portion of the first annular protrusion 331 is inserted by the first spring 340. The inner wall of the third air chamber 230 may be provided with an annular groove. The protruding portion is inserted into the annular groove on the inner wall of the third air chamber 230, or the protruding portion is directly inserted into the air hole; the annular protrusion is fitted with the annular groove, increasing the contact area between the elastic sheet and the inner wall and increasing the corner of the elastic sheet, which can effectively prevent the airflow from passing through; the recessed portion being inserted by the first spring 340 can effectively increase the stability of the spring installation.

[0057] In some embodiments, the second elastic sheet 430 is provided with a second annular protrusion 431. The second annular protrusion 431 includes a protruding portion on the front surface and a recessed portion on the back surface. The protruding portion of the second annular protrusion 431 can be inserted into the second air hole 221 or the inner wall of the third air chamber 230, and the recessed portion of the second annular protrusion 431 is inserted by the second spring 440. The inner wall of the third air chamber 230 may be provided with an annular groove. The protruding portion is inserted into the annular groove on the inner wall of the third air chamber 230, or the protruding portion is directly inserted into the air hole; the annular protrusion is fitted with the annular groove, increasing the contact area between the elastic sheet and the inner wall and increasing the corner of the elastic sheet, which can effectively prevent the airflow from passing through; the recessed portion being inserted by the second spring 440 can effectively increase the stability of the spring installation.

[0058] Further, the annular groove is provided with a leak-proof ring made of a gelatinous material, and the leak-proof ring can abut against the protruding portion, improving the leak-proof effect.

[0059] In some embodiments, both the first gear 310 and the second gear 410 are straight gears, and the teeth of the first gear 310 and the second gear 410 are both arranged in the radial direction. The teeth of the first gear 310 and the second gear 410 are arranged oppositely, and the driving wheel 510 of the rotary power member 500 can drive the two gears to rotate simultaneously.

[0060] In some embodiments, a cooling fan 520 is provided at the end of the rotary power member 500. The cooling fan 520 can improve the heat dissipation effect of the motor.

[0061] In some embodiments, a pressure relief valve 600 is further included. The pressure relief valve 600 is used to connect to the third air chamber 230. It can adjust the internal air pressure of the device to be inflated, improve the inflation accuracy, prevent the internal air pressure from being too large, and play a protective role for the air cylinder.

[0062] In some embodiments, the pressure relief valve 600 includes:

[0063] A cover plate 610, which is provided in the third air chamber 230;

[0064] A third spring 620, which is provided in the third air chamber 230. The third spring 620 is connected to the cover plate 610. The third spring 620 drives the cover plate 610 to move towards the direction close to the third air chamber 230 through elastic force;

[0065] A rubber ring 630, which is provided between the cover plate 610 and the double cylinder body 200.

[0066] Under this setting, the third spring 620 drives the cover plate 610 to move towards the direction close to the third air chamber 230 through elastic force, so that the cover plate 610 covers the air hole to prevent the gas in the third chamber from being discharged. When the air pressure in the third air chamber 230 is too large, the third spring 620 is subjected to an external force to make the cover plate 610 move away from the third air chamber 230, and a gap is formed between the cover plates 610, and the gas is discharged to reduce the air pressure in the third air chamber 230. The rubber ring 630 can effectively improve the sealing performance of the cover plate 610.

[0067] It should be noted that in this specification, terms such as "one embodiment", "some embodiments", "basic embodiment", "extended embodiment" can be used to describe several embodiments of the present invention. The specific features, structures, materials or characteristics in several embodiments can be combined under the premise of conforming to the principles and purposes of the present invention.

[0068] Although some embodiments of the present invention have been shown and described in this specification, the present invention should not be limited to the above embodiments. As long as it achieves the technical effects of the present invention by the same or equivalent means, within the spirit and principles disclosed in the present invention, without departing from the principles and purposes of the present invention, changes, modifications, equivalent replacements and equivalent variations made to these embodiments should all be included within the scope of protection disclosed by the present invention and should be considered to be within the scope of protection of the present invention.

Claims

1. A double-cylinder air pump movement, characterized in that: include: Rack(100); A double cylinder body (200) is arranged on the frame (100), the double cylinder body (200) is provided with a first air cavity (210), a second air cavity (220) and a third air cavity (230), a first air hole (211) is provided between the first air cavity (210) and the third air cavity (230), a second air hole (221) is provided between the second air cavity (220) and the third air cavity (230), and the third air cavity (230) is provided with an air outlet (240); A first driving assembly (300) comprises a first gear (310), a first piston rod (320), a first elastic sheet (330) and a first spring (340), wherein the first gear (310) is rotatably arranged on the frame (100), the first gear (310) drives the first piston rod (320) to move up and down in the first air cavity (210), the first elastic sheet (330) is arranged on the first air hole (211) and is located on a side close to the third air cavity (230), the first spring (340) is arranged in the third air cavity (230) and is connected to the first elastic sheet (330), and the first spring (340) is driven by elastic force to make the first elastic sheet (330) move from top to bottom; The second driving assembly (400) comprises a second gear (410), a second piston rod (420), a second elastic piece (430) and a second spring (440). The second gear (410) is rotatably arranged on the double cylinder body (200). The second gear (410) drives the second piston rod (420) to move up and down in the second air cavity (220). The second elastic piece (430) is arranged on the second air hole (221) and is located on a side close to the third air cavity (230). The second spring (440) is arranged on the third air cavity (230) and is connected to the second elastic piece (430). The second spring (440) drives the second elastic piece (430) to move from top to bottom through elastic force. The axes of the first gear (310) and the second gear (410) are arranged identically. The connection position between the first gear (310) and the first piston rod (320) and the connection position between the second gear (410) and the second piston rod (420) are symmetrically arranged with the axis as the center. The rotating power member (500) is provided with a driving wheel (510), and the driving wheel (510) is meshed with the first gear (310) and the second gear (410).

2. The double-cylinder air pump movement according to claim 1, characterized in that: A first connecting hole (231) and a second connecting hole (232) are provided in the middle of the third air cavity (230); one end of the first elastic sheet (330) is connected to the first connecting hole (231); one end of the second elastic sheet (430) is connected to the second connecting hole (232); and the other end of the first elastic sheet (330) and the other end of the second elastic sheet are arranged in a direction away from the middle.

3. The double-cylinder air pump movement according to claim 1, characterized in that: The third air cavity (230) is provided with a first groove (233), and the first spring (340) is arranged in the first groove (233).

4. The double-cylinder air pump movement according to claim 1, characterized in that: The third air cavity (230) is provided with a second groove (234), and the second spring (440) is arranged in the second groove (234).

5. The double-cylinder air pump movement according to claim 1, characterized in that: The first elastic piece (330) is provided with a first annular protrusion (331), and the first annular protrusion (331) includes a convex portion on the front side and a concave portion on the back side. The convex portion of the first annular protrusion (331) can be inserted into the inner wall of the first air hole (211) or the third air cavity (230), and the concave portion of the first annular protrusion (331) is inserted by the first spring (340).

6. The double-cylinder air pump movement according to claim 1, characterized in that: The second elastic piece (430) is provided with a second annular protrusion (431), and the second annular protrusion (431) includes a convex portion on the front side and a concave portion on the back side. The convex portion of the second annular protrusion (431) can be inserted into the inner wall of the second air hole (221) or the third air cavity (230), and the concave portion of the second annular protrusion (431) is inserted by the second spring (440).

7. The double-cylinder air pump movement according to claim 1, characterized in that: The first gear (310) and the second gear (410) are both straight teeth, and the teeth of the first gear (310) and the second gear (410) are both arranged in a radial direction.

8. The double-cylinder air pump movement according to claim 1, characterized in that: A heat dissipation fan (520) is provided at the end of the rotating power component (500).

9. The double-cylinder air pump movement according to claim 1, characterized in that: It also includes a pressure relief valve (600), wherein the pressure relief valve (600) is used to connect to the third air chamber (230).

10. The double-cylinder air pump movement according to claim 9, characterized in that: The pressure relief valve (600) comprises: A cover plate (610) disposed in the third air cavity (230); A third spring (620) is disposed in the third air cavity (230), the third spring (620) is connected to the cover plate (610), and the third spring (620) is driven by elastic force to move the cover plate (610) toward the direction close to the third air cavity (230); A rubber ring (630) is provided between the cover plate (610) and the double cylinder body (200).

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