TWM661541U - Air compressor structure - Google Patents

Abstract

An air compressor structure including a cylinder, a piston, and a cylinder lid is provided. The piston is coupled in the cylinder to perform reciprocating motion and generate compressed air. The cylinder lid detachably assembled to the cylinder has an air storage chamber and an outlet, wherein the air storage chamber is communicated between the cylinder and the outlet so as to receive the compressed air and discharge the compressed air out of the air compressor structure through the outlet.

Description

Air compressor structure

This new invention is related to an air compressor structure.

The main structure of the air compressor is to use a motor to drive the piston to perform reciprocating compression in the cylinder, and the compressed air can be used to fill the inflatable items connected to it.

As we all know, the temperature of gas often rises during the compression process. At the same time, in the structure of the above-mentioned air compressor, the intermittent motion of the piston due to reciprocating motion will also lead to unstable air pressure transmission, and the intermittent pressure shock wave will cause the pressure gauge pointer to shake, resulting in a difference between the pressure value displayed by the pressure gauge and the actual pressure value at the outlet.

Therefore, how to provide a simple structure while taking into account the above requirements is a problem that relevant technical personnel need to think about and solve.

This novel invention provides an air compressor structure that provides a compact structure while taking into account both structural sealing and air pressure stability.

The air compressor structure of the novel invention includes a cylinder, a piston and a cylinder cover. The piston is coupled to the cylinder and reciprocates to generate compressed air. The cylinder cover is detachably assembled to the cylinder. The cylinder cover has an air storage chamber and an air outlet. The air storage chamber is connected between the cylinder and the air outlet to receive compressed air and discharge the compressed air out of the air compressor structure through the air outlet.

Based on the above, the air compressor structure receives compressed air from the cylinder by setting up an air storage chamber and an air outlet on the cylinder head, and allows the compressed air to pass through the rear of the air storage chamber and be discharged from the air outlet. This makes the cylinder head an integrated structure. In addition to holding and covering the cylinder to receive compressed air, it also uses the air storage chamber inside as a buffer zone for compressed air, so as to take into account both structural sealing and air pressure stability.

100: Air compressor structure

110: Cylinder

111: Outer cylinder

112: Convex Wall

120: Cylinder cover

121: Cover

121a: Notch

121b:Baffle

121c: First chamber

122: Carrier

122a: Opening

122b: Second chamber

123: Exhaust port

123a: Opening

130: Piston

140: Transmission mechanism

150: Motor

160: Pressure gauge

170: Pressure relief valve

CZ: Center axis

L1, L2: Path

X-Y-Z: Cartesian coordinates

Figure 1 is a schematic diagram of the air compressor structure according to an embodiment of the present invention.

Figure 2 is a schematic diagram of the partial component decomposition of the air compressor structure in Figure 1.

Figure 3 and Figure 4 are partial cross-sectional views of the cylinder cover at different locations.

Figure 5 is a schematic diagram of the assembly of the cylinder cover and the cylinder.

FIG. 1 is a schematic diagram of an air compressor structure according to an embodiment of the present invention. FIG. 2 is a schematic diagram of a partial component exploded view of the air compressor structure of FIG. 1. A rectangular coordinate X-Y-Z is provided here to facilitate component description. Please refer to FIG. 1 and FIG. 2 at the same time. In this embodiment, the air compressor structure 100 includes a cylinder 110, a cylinder cover 120, a piston 130, a transmission mechanism 140, a motor 150, a pressure gauge 160 and a pressure relief valve 170. The cylinder cover 120 is detachably assembled to the cylinder 110. The transmission mechanism 140 is connected between the motor 150 and the bottom end of the piston 130, and the top end of the piston 130 is movably coupled to the cylinder 110, so that the motor 150 drives the piston 130 to reciprocate in the cylinder 110 through the transmission mechanism 140 to generate compressed air, wherein the top end of the piston 130 moves with the reciprocating motion. When the piston 130 moves to compress the air, the top end of the piston 130 moves toward the cylinder head 120 and squeezes the compressed air from the cylinder 110 to the cylinder head 120. When the piston 130 returns to its original position, the top end of the piston 130 moves away from the cylinder head 120, and the air from the external environment flows into the cylinder 110. The cylinder head 120 has an air storage chamber and an air outlet 123. After the piston 130 generates compressed air in the cylinder 110, the compressed air is squeezed toward the air storage chamber by the piston 130 as described above, and is discharged from the air compressor structure 100 from the air outlet 123 after passing through the cylinder head 120. In short, the air storage chamber of the cylinder head 120 serves as a temporary storage area for compressed air before the compressed air is discharged from the air compressor structure 100.

3 and 4 are partial cross-sectional views of the cylinder cover at different locations. Please refer to FIGS. 2 to 4 simultaneously. The cylinder cover 120 of this embodiment is an integrated structure consisting of a cover body 121 and a carrier body 122. The cover body 121 is fastened to or removed from the cylinder 110. The carrier body 122 is structurally connected to the cover body 121 and has an air outlet 123. The cover body 121 is connected to the cylinder 110 to receive compressed air. Specifically, the cover 121 has a first chamber 121c, and the carrier 122 has a second chamber 122b. The first chamber 121c is connected to the second chamber 122b through the opening 122a, and the opposite side of the first chamber 121c is connected to the cylinder 110. The second chamber 122b is connected to the air outlet 123 through the opening 123a, so that the second chamber 122b can be connected between the first chamber 121c and the air outlet 123. When the piston 130 generates compressed air in the cylinder 110, as mentioned above, it will be squeezed into the cylinder head 120 by the piston 130, and as shown in FIG. 2, the compressed air will pass through the first chamber 121c, the opening 122a, the second chamber 122b, and the opening 123a in sequence, and finally be discharged through the air outlet 123.

It is clear from this that the cylinder cover 120 not only serves as a connecting member between the cylinder 110 and the object to be inflated (not shown), but also serves as a temporary storage area for the compressed air to remain. In other words, the carrier 122 has an L-shaped profile, and the second chamber 122b has a turn, thereby extending the residence time of the compressed air in the second chamber 122b. In this way, when facing the intervals of the reciprocating motion of the piston 130, since there is still compressed air in the second chamber 122b and even the first chamber 121c, the unstable air pressure caused by the aforementioned intervals will not directly affect the compressed air discharged from the outlet 123. Furthermore, as the operation time of the air compressor structure 100 increases or the friction between the piston 130 and the cylinder 110 is experienced, the compressed air will inevitably absorb heat from the device. Since the cylinder cover 120 has a first chamber 121c and a second chamber 122b (mainly composed of the two to form an air storage chamber) for the compressed air to stay, the compressed air can dissipate heat through the structure itself (carrier 122 and cover 121) during the time it stays in the air storage chamber, without allowing the heat of the compressed air to affect the object to be inflated.

In addition, as shown in FIG. 1, FIG. 2 or FIG. 4, the pressure gauge 160 of the air compressor structure 100 of the present embodiment is disposed in the carrier 122 to sense the air pressure of the second chamber 122b, and the marking scale of the pressure gauge 160 is located on the surface of the carrier 122. Accordingly, the cylinder head 120 allows the user to know the air pressure value of the air storage chamber through the built-in pressure gauge 160. Furthermore. The pressure relief valve 170 of this embodiment is disposed in the carrier 122 and connected to the second chamber 122b, so that the user can check the pressure gauge 160 and make a judgment and decide whether to operate the pressure relief valve 170 accordingly to allow the compressed air pressure in the air storage chamber to reach the required level.

FIG5 is a schematic diagram of the assembly of the cylinder cover and the cylinder. Please refer to FIG2 and FIG5 at the same time. In this embodiment, the cover body 121 and the cylinder 110 share the central axis CZ, and the inner bottom edge of the cover body 121 is provided with a plurality of recesses 121a and a plurality of stoppers 121b, which surround the central axis CZ and are arranged alternately with each other, and the outer cylindrical surface 111 of the cylinder 110 is provided with a plurality of protrusions 112, which are arranged around the central axis CZ and correspond to the recesses 121a and the stoppers 121b. Each convex wall 112 moves into the first chamber 121c of the cover 121 through the corresponding notch 121a, and after the cover 121 and the cylinder 110 rotate relative to each other, each convex wall 112 moves into and is locked in the corresponding stopper 121b. Here, the distance of the convex wall 112 relative to the center axis CZ is smaller than the distance of the notch 121a relative to the center axis CZ, and the convex wall 112 and the notch 121a are located in the same plane (for example, the X-Y plane), and the plane (X-Y plane) is the normal plane of the center axis CZ (or regarded as the Z axis).

Thus, during the process of assembling the cylinder cover 120 and the cylinder 110, the convex wall 112 first moves into the first chamber 121c of the cover body 121 along the path L1, and then drives the cylinder cover 120 and the cylinder 110 to rotate relative to each other about the central axis CZ, as shown by the rotation arrow in FIG5, which is equivalent to moving the convex wall 112 along the path L2, so that the convex wall 112 and the stopper 121b are locked together, and the assembly is completed. Conversely, the user only needs to drive the cylinder cover 120 and the cylinder 110 to rotate about the central axis CZ in the opposite direction to the path L2, and the cylinder cover 120 and the cylinder 110 can be separated smoothly along the central axis CZ. Here, Figure 5 shows the state before assembly, while Figure 2 shows the state after assembly.

In summary, in the above-mentioned embodiment of the present invention, the air compressor structure receives compressed air from the cylinder by providing an air storage chamber and an air outlet on the cylinder cover, and allows the compressed air to pass through the rear of the air storage chamber and be discharged from the air outlet. This makes the cylinder cover an integrated structure, which not only holds and covers the cylinder to receive compressed air, but also uses the air storage chamber inside it as a buffer zone for compressed air, so as to take into account both structural sealing and air pressure stability, thereby overcoming the influence of the intermittent pressure generated by the reciprocating motion of the piston on the pressure gauge structure. At the same time, the buffer zone allows the compressed gas to dissipate heat through the surrounding structure of the buffer zone to reduce the temperature rise caused by the air compression process.

In one embodiment, the cylinder cover and the cylinder are assembled, held or disassembled by rotating through the corresponding relationship between the convex wall, the concave groove and the stopper. This provides a simple and practical combination method for the cylinder cover and the cylinder to facilitate disassembly and assembly, and thereby allows the air compressor structure to be compact to achieve the above-mentioned effect.

100: Air compressor structure

110: Cylinder

120: Cylinder cover

130: Piston

140: Transmission mechanism

150: Motor

160: Pressure gauge

170: Pressure relief valve

X-Y-Z: Cartesian coordinates

Claims (9)

An air compressor structure includes: a cylinder; a piston coupled in the cylinder and reciprocating to generate compressed air; and a cylinder cover detachably assembled to the cylinder, the cylinder cover having an air storage chamber and an air outlet, the air storage chamber being connected between the cylinder and the air outlet to receive the compressed air and discharge the compressed air out of the air compressor structure through the air outlet. An air compressor structure as described in claim 1, wherein the cylinder cover includes a cover body and a carrier, the cover body is fastened to the cylinder or removed from the cylinder, the carrier structure is connected to the cover body and the carrier has the air outlet. An air compressor structure as described in claim 2, wherein the cover body and the cylinder share a common central axis, the inner bottom edge of the cover body is provided with a plurality of recesses and a plurality of baffles, which surround the central axis and are arranged alternately with each other, and the outer cylindrical surface of the cylinder is provided with a plurality of protrusions, which are arranged around the central axis and correspond to the recesses and the baffles, each of the protrusions moves into the cover body through the corresponding recess, and after the cover body and the cylinder rotate relative to each other, each of the protrusions moves into and is fastened to the corresponding baffle. An air compressor structure as described in claim 3, wherein the distance of the protrusion relative to the center axis is smaller than the distance of the recess relative to the center axis, and the protrusions and the recesses are located in the same plane, which is the normal plane of the center axis. An air compressor structure as described in claim 2, wherein the cover has a first chamber, the carrier has a second chamber, the first chamber is connected to the cylinder, and the second chamber is connected between the first chamber and the air outlet. An air compressor structure as described in claim 5, wherein the carrier has an L-shaped profile and the second chamber has a turn. The air compressor structure as described in claim 5 further includes a pressure gauge disposed in the carrier to sense the air pressure of the second chamber, and the marking scale of the pressure gauge is located on the surface of the carrier. The air compressor structure as described in claim 5 further includes a pressure relief valve disposed on the carrier and connected to the second chamber. The air compressor structure as described in claim 1 also includes a motor and a transmission mechanism, one end of the piston is coupled to the cylinder, the other end of the piston is connected to the transmission mechanism, the transmission mechanism is connected to the motor, and the motor drives the piston to perform the reciprocating motion via the transmission mechanism, wherein the end of the piston moves closer to or farther from the cylinder cover as the reciprocating motion occurs.

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