The porous piston body inside the air compressor cylinder

Abstract

This invention provides a porous piston body for an air compressor cylinder, specifically a piston head in an air compressor cylinder with at least one fixing pin on its top surface to position at least one intake baffle. The intake baffle has at least one bent section adjacent to its positioning area, and the other side of the intake baffle on the bent section is an operating area. This operating area can cover at least one air hole on the top surface of the piston head. An annular groove is recessed on the piston head surrounding the air hole, in which a spring can be housed. The other end of the spring extends upward along the annular groove and abuts against the back of the aforementioned intake baffle. The operating area forms a slightly open ventilation space with the top surface of the piston head on the back side facing away from the cylinder top, so that the pressure inside the cylinder is balanced with the external atmospheric pressure.

Description

Technical Field

[0001] This invention relates to the technical field of air compressors, and in particular to a piston in an air compressor cylinder capable of both upward and downward strokes, and an intake baffle plate covering the piston head. Background Technology

[0002] The main structure of an air compressor is that a piston driven by a motor reciprocates in a cylinder to compress air. The compressed air is then transported from the cylinder to an air reservoir, and then connected to the item to be inflated via a transmission hose from a manifold on the air reservoir. Conventionally, the piston has an air passage that runs vertically through the piston head, and an intake baffle is installed on the top surface of the piston head over the air passage. When the air compressor is stopped, the intake baffle seals the air passage of the piston head. After the air compressor has been running for a while, the airtightness created by the O-rings around the piston head and the intake baffle sealing the air passage prevents the high-pressure air remaining in the cylinder from being discharged. When the air compressor is restarted, the piston impacts the high-pressure air remaining in the cylinder during the initial compression process, instantly increasing the load on the air compressor and causing a surge in current, which shortens the lifespan of the air compressor. Summary of the Invention

[0003] The main objective of this invention is to provide a porous piston body for an air compressor cylinder, specifically, a piston head with at least one fixed pin on its top surface to position at least one intake baffle. The intake baffle has at least one bent section near its positioning area. The other side of the intake baffle, located on the bent section, forms an action area that covers at least one air hole on the piston head's top surface. A ring-shaped groove is recessed on the piston head surrounding the air hole, housing a spring. The other end of the spring extends upwards along the ring-shaped groove and presses against the back of the intake baffle. The action area, on its back side facing away from the cylinder top, forms a ventilation space with a small angle opening with the piston head's top surface, balancing the pressure inside the cylinder with the external atmospheric pressure. This eliminates back pressure resistance when the intake baffle moves again, making the piston's upward and downward movements smoother and more stable.

[0004] Another major objective of this invention is to provide a porous piston body for an air compressor cylinder, wherein the intake baffle has a bent section, and the solid of the bent section has at least one bent track. In use, the plurality of bent tracks of the bent section can be adapted to the different output power requirements of the air compressor.

[0005] Furthermore, the piston body installed in the air compressor has an intake baffle positioned at the center of the top plane of its piston head. The intake baffle has a circular bend near its center. The portion of the baffle smaller than the radius of the bend is the positioning area, and the outer ring portion larger than the radius of the bend is the function area. The function area forms an angled opening with the top plane of the piston head on the back side facing away from the cylinder top, forming the ventilation space. The top plane of the piston head near the outer circumference has an air hole penetrating the upper and lower ends of the piston head. The air hole is connected to the ventilation space, so that the pressure inside the cylinder is balanced with the external atmospheric pressure. This ensures that there is no back pressure resistance when the intake baffle moves again, making the upward and downward movement of the piston body smoother and more stable.

[0006] Furthermore, the air holes are a plurality of spaced-apart air holes arranged in a circular pattern on the top plane near the outer circumference of the piston head.

[0007] Furthermore, the positioning area of ​​the intake baffle is provided with a polygonal perforation, and a polygonal base is provided on the piston head relative to the polygonal perforation. The intake baffle is positioned on the polygonal base of the piston head by the polygonal perforation, and a fixing cap is used to fix it on the cylinder extending from the top of the polygonal base, so that the intake baffle is firmly positioned on the piston head. When the piston body of the air compressor is in a stopped and stationary state, the working area of ​​the intake baffle is in an open state relative to the air hole of the piston head.

[0008] Furthermore, two positioning areas of two intake baffles are fixed to the top plane of the piston head by two fixing pins. Each of the two intake baffles has a folded section, and on the other side of the two folded sections are two function areas. The two function areas can cover the two air holes of the piston head respectively. The back of the two function areas and the top plane of the piston head form a ventilation space with an included angle.

[0009] After adopting the above technical solution, when the air compressor of the present invention is stopped, a small-angle ventilation space is formed between the top plane of the piston head and the intake baffle. When the air compressor finishes operating, the compressed air remaining in the cylinder can be discharged through the ventilation space and the air passage, so that the pressure in the cylinder is balanced with the surrounding atmosphere. This ensures that when the air compressor is restarted, there will be no additional resistance when the piston is in the upward stroke, avoiding the instantaneous increase in compression load and current surge. This allows the piston to maintain smooth compression efficiency when it reciprocates in the cylinder, and also improves safety and extends its service life. It also makes it easier and faster to fill the gas in the object to be filled. Attached Figure Description

[0010] Figure 1 This is an exploded perspective view of the piston body of the present invention;

[0011] Figure 2 This is a cross-sectional view of the piston body of the present invention;

[0012] Figure 3 This is a partially enlarged cross-sectional view of the piston body of the present invention;

[0013] Figure 4 This is a schematic diagram of the compressed air flow during the downward stroke of the piston body in the cylinder according to the present invention;

[0014] Figure 5 This is a partially enlarged schematic diagram of the piston body during its upward stroke in this invention.

[0015] Figure 6 This is a schematic diagram of the air compressor of the present invention installed in the housing;

[0016] Figure 7 This is a cross-sectional view of the air intake baffle of the present invention containing multiple bent tracks;

[0017] Figure 8 This is an embodiment diagram of another piston body and another intake baffle of the present invention.

[0018] Symbol explanation:

[0019] 1...box

[0020] 10... Air compressor

[0021] 11...Substrate

[0022] 12... motor

[0023] 13... cylinders

[0024] 14...Transmission mechanism

[0025] 141...crankshaft

[0026] 15...Gas storage base

[0027] 16... Pressure gauge

[0028] 2...piston head

[0029] 20...Top plane

[0030] 21... pores

[0031] 22...Polygonal base

[0032] 23...Cylinder

[0033] 24...O-ring

[0034] 25...fixed cap

[0035] 26... Annular groove

[0036] 3...Top plane

[0037] 31...Fixing pin

[0038] 32...Intake damper

[0039] 321...Zigzag segment

[0040] 322...Location area

[0041] 323... scope

[0042] 33...Fixed pin

[0043] 34...Intake damper

[0044] 341...Bend segment

[0045] 342...Location area

[0046] 343... scope

[0047] 35...pores

[0048] 351... Annular groove

[0049] 36...pores

[0050] 361... Annular groove

[0051] 37... Spring

[0052] 38...spring

[0053] 5...piston rod

[0054] 51...round hole

[0055] 6...spring

[0056] 7...Intake damper

[0057] 70...bends

[0058] 701... Bending track

[0059] 702...Second Bend Track

[0060] 703... Third bend in the track

[0061] 71...Location area

[0062] 72... Scope

[0063] 73...Multi-angle perforation

[0064] Z...ventilation space

[0065] θ... angle. Detailed Implementation

[0066] Please refer to the following first. Figure 6 As shown, the air compressor 10 of the present invention can be installed in a compartment, a housing 1, or its working location, such as... Figure 6 The box 1 shown contains an air compressor 10, which can be used for inflation or combined with a glue applicator (not shown in the conventional art diagram) for glue filling and inflation. The air compressor 10 includes a base plate 11 for fixing a motor 12, a cylinder 13 attached to the base plate 11, and a transmission mechanism 14 of the air compressor 10 can be installed on the base plate 11. The transmission mechanism 14 is connected to a piston body. Please refer to the following: Figures 1 to 5 The piston body includes a piston head 2, and an O-ring 24 is installed around the outer periphery of the piston head 2. The O-ring 24 provides a continuous seal around the piston body and the inner surface of the cylinder 13 during the operation of the air compressor 10. The top surface 20 of the aforementioned piston head 2 is provided with at least one air hole 21. A ring groove 26 is recessed on the piston head 2 around the air hole 21, and a spring 6 can be housed therein. The other end of the spring 6 extends upward along the ring groove 26 and abuts against the aforementioned intake baffle 7, slightly lifting it. When the piston body is stationary, the working area 72 of the intake baffle 7 remains open. A piston rod 5 extends downward from the aforementioned piston head 2. The lower end of the piston rod 5 is provided with a circular hole 51 and is pivotally fixed to the crankshaft 141 in the transmission mechanism 14. When the output shaft of motor 12 drives the crankshaft 141 of transmission mechanism 14 to rotate, it simultaneously drives the piston to move up and down in cylinder 13, generating compressed air that enters air reservoir 15. Through the air supply manifold, the compressed air can enter pressure display gauge 16 to display the pressure. The air supply hose can be used to inflate items (not shown in the figure). Alternatively, tire sealant can be supplied to damaged tires for repair and adequate tire pressure via the air supply hose or valve switch (not shown in the figure). However, these are the current usage scenarios, so they are not illustrated or detailed in the structure. They are simply stated here.

[0067] The piston body of the air compressor 10 of the present invention has at least one intake baffle 7 positioned on the top surface 20 of its piston head 2. The intake baffle 7 has a positioning area 71, and a bent section 70 is provided adjacent to the positioning area 71. This bent section 70 is not a random bending of the intake baffle 7 to form the bent track 701 as described in this specification, but rather a precise application of mechanical processes to form the intake baffle 7 with a bending angle to form the bent section 70 and its associated bent track 701. Whether it is one or more bent tracks, multiple bent tracks... Figure 7 As shown, the folded section 70 contains a bent track 701, a second bent track 702, and a third bent track 703 to accommodate the different output power requirements of the air compressor. When external pressure acts on the intake baffle 7, the stress of the intake baffle 7 can move up and down according to the predetermined bent track 701 (or track). One side of the plate of the folded section 70 is designated as the positioning area 71, and the other side of the folded section 70 is designated as the action area 72. The positioning area 71 of the intake baffle 7 is used to fix it on the top plane 20 of the piston head 2. The aforementioned action area 72 of the intake baffle 7 and the positioning area 71 of the intake baffle 7 are connected by the folded section 70 as the axis, so that the positive surface of the intake baffle 7 (i.e., the upper surface of the intake baffle 7 facing the top of the cylinder 13 during the upward stroke) forms an obtuse angle of less than 180 degrees. At the same time, the action area 72 of the intake baffle 7 is... The back surface facing away from the top of the cylinder 13 naturally forms a small angle θ with the aforementioned piston head 2 top plane 20, forming a ventilation space Z. This ventilation space Z is connected to the air hole 21 of the piston head 2, so that when the piston body of the air compressor 10 is stopped and stationary, the working area 72 of the intake baffle 7 remains open relative to the air hole 21 of the piston head 2. By ensuring that the air hole 21 of the piston body is unobstructed, the pressure in the cylinder 13 is balanced with the surrounding atmosphere, so that when the air compressor 10 is restarted, its piston body will not have additional resistance (back pressure resistance) during the upward stroke.

[0068] Please see Figures 1 to 5In one embodiment, the piston body of the air compressor 10 has an intake baffle 7 positioned at the center of the top plane 20 of the piston head 2. The intake baffle 7 has a circular bend 70 near its center. The plate within the radius of the bend 70 is the positioning area 71, and the outer ring plate with a radius greater than the bend 70 is the function area 72. The function area 72 forms a small angle θ opening with the top plane 20 of the piston head 2 on the back side facing away from the top of the cylinder 13, forming a ventilation space Z. The positioning area 71 of the intake baffle 7 has a polygonal perforation 73. A polygonal base 22 is provided on the piston head 2 relative to the polygonal perforation 73. The intake baffle 7 is positioned on the polygonal base 22 of the piston head 2 by the polygonal perforation 73. A fixing cap 25 is sleeved and fixed on the cylinder 23 extending from the top of the polygonal base 22, so that the intake baffle 7 can be firmly positioned on the piston head 2. The aforementioned piston head 2 has a plurality of air holes 21 arranged in a circular pattern at its top surface 20 near its circumferential edge, which penetrate the upper and lower ends of the piston head 2. These air holes 21 are connected to the ventilation space Z. Simultaneously, because the aforementioned spring 6 is located in the annular groove 26 of the piston head 2, the other end of the spring 6 also abuts against the back of the outer ring plate outside the positioning area 71 of the intake baffle 7, creating an open ventilation space Z between the intake baffle 7 and the top surface of the piston head 2. Based on the design of the bent section 70 of the intake baffle 7 and the spring 6 pressing against the back of the outer ring plate outside the positioning area 71 of the intake baffle 7, when the piston of the air compressor 10 is stationary, the working area 72 of the intake baffle 7 remains open relative to the air holes 21 of the piston head 2. Figure 4 As shown, the pressure in cylinder 13 is balanced with the surrounding atmosphere by the unobstructed air hole 21 of the piston body, so that when the air compressor 10 restarts, there is no additional resistance (back pressure resistance) in the piston body during the upward stroke. Figure 5 As shown, this allows the piston to maintain smooth compression efficiency when it reciprocates within the cylinder 13, while also ensuring safety and extending its service life, and making it easier and faster to fill the material with gas. Figure 4 and Figure 5 This diagram illustrates the piston's upward and downward strokes within cylinder 13. During the upward stroke, the piston... Figure 5 As shown, the spring 6 is compressed and the working area 72 of the intake damper 7 is in a closed state with the air hole 21 of the piston body closed. During the downward stroke of the piston body, the spring 6 extends and opens the working area 72 of the intake damper 7 away from the air hole 21, thus becoming an open state. Figure 4 When the piston body is stationary, due to the spring 6 supporting the intake damper 7's working area 72 and the bending section 70, the intake damper 7's working area 72 is at an opening angle θ, and its state is as follows. Figure 4As shown, the high-pressure air remaining inside the cylinder 13 can be discharged through the ventilation space Z and the air hole 21, and the pressure inside the cylinder 13 is balanced with the external atmospheric pressure.

[0069] The most important technical features of this invention are: First, the intake baffle 7 has a bent section 70, which has at least one bent track 701; Second, one side of the bent section 70 is designated as a positioning area 71, and the other side is designated as an action area 72, so that the action area 72 forms a small-angle-θ ventilation space Z with the top plane 20 of the piston head 2 on the back side facing away from the top of the cylinder 13; Third, the top plane 20 of the piston head 2 has at least one bent track 701. Fourth: The piston head 2 has at least one annular groove 26 recessed on the piston head 2 around the air hole 21, with one air hole 21 missing. A spring 6 can be housed in the groove, and the other end of the spring 6 extends upward along the annular groove 26 and presses against the back of the aforementioned intake baffle 7. It is connected to the air hole 21 through the ventilation space Z, so that the pressure inside the cylinder 13 is balanced with the external atmospheric pressure. This ensures that there is no back pressure resistance when the aforementioned intake baffle 7 moves again, making the upward and downward movement of the piston body smoother and more stable. Other embodiments of the present invention can achieve the above-mentioned inventive objectives with different structures.

[0070] Please refer to Figure 8 In another embodiment, two positioning areas 322 and 342 of two intake baffles 32 and 34 are fixed on the top plane 3 of the piston head by two fixing pins 31 and 33, respectively. The two intake baffles 32 and 34 each have a bent section 321 and 341, and on the other side of the two bent sections 321 and 341 are two function areas 323 and 343. The two function areas 323 and 343 can respectively cover the two air holes 35 and 36 of the piston head. A cylindrical groove 351 and 361 are recessed, in which a spring 37 and 38 can be respectively housed. The other ends of the two springs 37 and 38 extend upward along the two cylindrical grooves 351 and 361 and abut against the back of the two air intake baffles 32 and 34 respectively. They are connected to the air holes 35 and 36 through the ventilation space Z. The back of the two working areas 323 and 343 still follow the most important inventive concept of this invention, that is, the back of the working areas 323 and 343 and the top plane 3 of the piston head form a ventilation space Z with a small angle θ.

[0071] In summary, the piston body of this invention features a multi-hole design and at least one intake baffle that can be of different shapes. The intake baffle forms an angle θ with the top plane of the piston head and leaves a ventilation space Z to balance the pressure inside and outside the cylinder, thus eliminating the obstruction of back pressure. For intake baffles of various shapes, there are bent sections and positioning areas and working areas on both sides.

Claims

1. A porous piston body for an air compressor cylinder, characterized in that: The piston head of the air compressor cylinder has at least one fixing pin on its top surface, positioning at least one intake baffle. The intake baffle has at least one bent section near its positioning area. The other side of the intake baffle, located on the bent section, is the working area, which covers at least one air hole on the piston head's top surface. At least one annular groove for accommodating a spring is provided on the piston head away from the air hole. The working area forms a ventilation space with an angled opening on its back side facing away from the cylinder top and the piston head's top surface. This ventilation space communicates with the air hole, allowing air to pass through the cylinder... The pressure is balanced with the external atmospheric pressure, so that when the intake baffle moves again, there is no back pressure resistance, making the upward and downward movement of the piston body smoother and more stable. The solid of the bent section has at least one bending track, which is formed by mechanical process applied to the intake baffle. The other end of the spring abuts against the back surface of the intake baffle outside the positioning area. When the piston body is in a stationary state, the spring extends and supports the working area of ​​the intake baffle and the bent section, so that the working area is at an opening angle to keep the air hole unobstructed.

2. The porous piston body in the cylinder of the air compressor according to claim 1, characterized in that: The zigzag section has multiple bent tracks to accommodate the different output power requirements of the air compressor.

3. The porous piston body in the air compressor cylinder according to claim 1, characterized in that: The piston body of the air compressor has an intake baffle positioned at the center of the top plane of its piston head. The intake baffle has a circular bend near its center. The portion of the baffle smaller than the radius of the bend is the positioning area, and the outer ring portion larger than the radius of the bend is the function area. The function area forms an angled opening with the top plane of the piston head on the back side facing away from the cylinder top, forming the ventilation space. The top plane of the piston head near the outer circumference has an air hole penetrating the upper and lower ends of the piston head. The air hole is connected to the ventilation space, so that the pressure inside the cylinder is balanced with the external atmospheric pressure. This ensures that there is no back pressure resistance when the intake baffle moves again, making the upward and downward movement of the piston body smoother and more stable.

4. The porous piston body in the air compressor cylinder according to claim 3, characterized in that: The air holes are a plurality of spaced-apart air holes arranged in a circular pattern on the top plane near the outer circumference of the piston head.

5. The porous piston body in the air compressor cylinder according to claim 3, characterized in that: The positioning area of ​​the intake baffle is provided with a polygonal perforation, and a polygonal base is provided on the piston head relative to the polygonal perforation. The intake baffle is positioned on the polygonal base of the piston head by the polygonal perforation, and a fixing cap is used to fix it on the cylinder extending from the top of the polygonal base, so that the intake baffle is firmly positioned on the piston head. When the piston body of the air compressor is in a stopped and stationary state, the working area of ​​the intake baffle is open relative to the air hole of the piston head, and the cylinder is the fixing pin.

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