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JP-7856705-B2 - Air compressor structure

JP7856705B2JP 7856705 B2JP7856705 B2JP 7856705B2JP-7856705-B2

Inventors

  • 周 文三
  • 周 承賢

Assignees

  • 已久工業股▲ふん▼有限公司

Dates

Publication Date
20260511
Application Date
20240812
Priority Date
20240705

Claims (8)

  1. A cylinder having multiple air holes, A piston is reciprocally coupled within the cylinder, A lid to be assembled to the cylinder, wherein the lid has a pressing column, and the internal space of the cylinder and the internal space of the lid are in communication with each other through the plurality of air holes, A backflow prevention piece is movably disposed between the cylinder and the lid, Equipped with, When the piston makes its first stroke, the piston approaches the plurality of air holes, compressing the air inside the cylinder, and the compressed air, after passing through the plurality of air holes, pushes up the backflow prevention piece and flows into the lid. When the piston makes a second stroke, a vacuum is formed in the cylinder at the moment the piston moves away from the plurality of air holes, and the backflow prevention piece is driven by the vacuum and the compressed air located in the lid to cover and seal the plurality of air holes , the backflow prevention piece has a bowl-shaped contour, the cylinder further has a partition and a position limiting ring extending from the partition, the bowl edge of the bowl-shaped contour abuts against the inner ring wall of the position limiting ring, the pressing column is fitted to abut against the inner bottom of the bowl of the bowl-shaped contour, and the partition has the plurality of air holes. Air compressor structure.
  2. The backflow prevention piece has two annular ribs facing the cylinder and having the same central axis, and abuts against the partition wall of the cylinder, and the partition wall has the plurality of air holes. The air compressor structure according to claim 1.
  3. The plurality of air holes are arranged in an annular shape, and the orthogonal projection of the plurality of air holes in the backflow prevention piece is located between the two annular ribs. The air compressor structure according to claim 2.
  4. The backflow prevention piece has an upper and lower surface facing each other, the two annular ribs are located on the lower surface, and the pressing column is fitted to abut against the upper surface. The air compressor structure according to claim 2.
  5. The backflow prevention piece has at least one annular rib located at the outer bottom of the bowl-shaped contour, and the outer surface of the annular rib is flush with the outer surface of the bowl edge. The air compressor structure according to claim 1 .
  6. The backflow prevention piece has at least one annular rib located at the outer bottom of the bowl-shaped contour, and a step exists between the outer surface of the annular rib and the outer surface of the bowl edge, forming a recess. The air compressor structure according to claim 1 .
  7. The backflow prevention piece has a position limiting ring and is movably connected to the pressing column, the pressing column limiting the position of the backflow prevention piece. The air compressor structure according to claim 1.
  8. The piston has an opening and an intake occlusion piece, the intake occlusion piece is elastically deformable to cover the opening and open and close the opening, when the piston makes the second stroke, the intake occlusion piece is pushed up by the vacuum, allowing air from the external environment to enter the cylinder through the opening, and when the piston makes the first stroke, the intake occlusion piece returns to its original position to close the opening. The air compressor structure according to claim 1.

Description

This invention relates to an air compressor structure. The main structure of an air compressor involves using a motor to drive a piston, which performs a reciprocating compression action within a cylinder, thereby filling the connected object to be inflated with compressed air. In the air passage of the above-mentioned air compressor, a rubber stopper is typically placed in combination with a spring. The spring's elastic force drives the rubber stopper to close the passage, or the compressed air drives the rubber stopper to overcome the spring's elastic force and open the passage, thereby functioning as a backflow prevention valve. However, in actual operation, limitations imposed by the spring's elastic force and the rubber stopper's hardness often prevent complete closure of the passage. Furthermore, the spring's elastic force may be too strong, preventing the passage from opening, or the spring may fatigue with increased usage time. Therefore, how to propose improvement measures to address the above-mentioned problems is an issue that the relevant engineers need to consider. This is a schematic diagram of an air compressor structure according to one embodiment of the present invention.This is an exploded view illustrating some of the components of an air compressor structure.This is an exploded view illustrating some of the components of an air compressor structure from a different perspective.This is a local cross-sectional view illustrating the structure of an air compressor from a three-dimensional perspective.This is a local cross-sectional view of the air compressor structure.This is a local cross-sectional view of the air compressor structure.This is a local cross-sectional view of an air compressor structure according to another embodiment of the present invention.This is a local cross-sectional view of an air compressor structure according to another embodiment of the present invention.This is a local cross-sectional view of an air compressor structure according to yet another embodiment of the present invention. Figure 1 is a schematic diagram of an air compressor structure according to one embodiment of the present invention. Figures 2 and 3 are exploded views illustrating some components of the air compressor structure from different viewpoints. Here, for the convenience of describing the components, Cartesian coordinates X-Y-Z are provided simultaneously. Referring to Figures 1 to 3 simultaneously, in this embodiment, the air compressor structure 100 includes a cylinder 110, a piston 130, a cover 120, a transmission mechanism 140, a backflow prevention piece 180, a motor 150, an air reservoir 160, and a pressure gauge 170. Here, the transmission mechanism 140 is connected between the bottom end of the piston 130 and the motor 150, the bottom end of the piston 130 is connected to the transmission mechanism 140, and the upper end of the piston 130 is movably coupled inside the cylinder 110, so that after receiving power, the motor 150 can drive the piston 130 via the transmission mechanism 140 to reciprocate inside the cylinder 110, thereby compressing the air inside the cylinder 110. Alternatively, when the piston 130 separates from the cover 120, external air can be drawn into the cylinder 110 to replenish the air supply. Figure 4 is a local cross-sectional view illustrating the structure of the air compressor from a three-dimensional perspective. Referring to Figures 2 through 4, more specifically, the cylinder 110 comprises a cylindrical body 111, a plurality of protrusions 112 surrounding the cylindrical surface of the body 111, and a partition wall 115 that separates the internal space of the lid 120 from the internal space of the cylinder 110. The partition wall 115 has a plurality of air holes 113 and is arranged annularly with respect to the central axis CX of the body 111. As shown in Figure 3, the inner wall of the lid 120 has a plurality of slots 122, and the lid 120 further has a pressing column 121 located in the central part of the interior and an air storage channel 123 corresponding to the interior space, thereby allowing the interior space of the lid 120 to communicate with the air reservoir 160 via the air storage channel 123. Therefore, the protrusion 112 and the slot 122 engage with each other, allowing the lid 120 to be assembled to the body 111 of the cylinder 110. Furthermore, the internal space of the lid 120 is adjacent to the internal space of the cylinder 110 via the partition wall 115, and these two internal spaces are connected by the air vent 113. Furthermore, as shown in Figure 1, the air reservoir 160 is equipped with an air outlet 161 for connecting an object to be inflated, such as a tire (not shown), and a pressure gauge 170 is located inside to inform the user of the air pressure in the air reservoir 160. Simply put, when the piston 130 is driven and performs a reciprocating stroke within the cylinder 110, compressed air is continuously generated and passed