Intake valve for a cylinder-piston unit

Abstract

The invention provides an air intake baffle for a cylinder piston, which has a positioning area fixedly combined with the top end plane of the piston head, and a bending section adjacent to the positioning area, so that the air intake baffle, together with the rest of the positioning area other than the bending section, forms an action area above the air intake passage of the piston, which forms a small-angle air passage space with the top end plane of the piston head. The piston rod extending below the axis of the piston head has a cavity, and a spring is sleeved on the bottom end vertical columnar tip of the cavity, and the other end of the spring is in contact with the slightly raised air intake baffle, so that the air intake passage penetrating the piston head is connected with the air passage space, and the action area of the air intake baffle remains open when the piston is static.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air compressors, in particular to a piston body capable of upstroke and downstroke in the cylinder of an air compressor and an air inlet baffle thereof. BACKGROUND

[0002] The main structure of an air compressor is to drive a piston body in a cylinder to perform reciprocating compression by a motor. The compressed air can be delivered from the cylinder to a gas storage seat, and then connected to an article to be inflated by a transmission hose connected to a manifold on the gas storage seat. The piston body has an air passage passing through the piston head. An air inlet baffle is arranged on the top surface of the piston head. In the off state of the air compressor, the air inlet baffle seals the air passage of the piston head. After the air compressor is started again, the air-tightness formed by the air-tight ring arranged on the circular periphery of the piston head and the air inlet baffle sealing the air passage of the piston head makes it impossible to discharge the high-pressure air remaining in the cylinder. When the piston body starts to compress again, it collides with the high-pressure air remaining in the cylinder, which instantly increases the load and current of the air compressor, resulting in a reduction in the service life of the air compressor. SUMMARY

[0003] In order to improve the shortcomings of the prior art, the main purpose of the present application is to provide an air inlet baffle of a cylinder piston body. The air inlet baffle is provided with a bending section. One side of the bending section is a positioning area for being arranged on the top surface of the piston head, and the other side is an action area for covering the air inlet passage of the piston body. The action area of the air inlet baffle and the positioning area of the air inlet baffle are separated by the axis of the bending section, so that the outward surface of the air inlet baffle forms an obtuse angle less than 180 degrees. At the same time, the action area of the air inlet baffle naturally forms an opening state with the top surface of the piston head at an acute angle, forming an air passage space. The piston rod extending below the piston head shaft has a hollow, and the bottom end of the piston rod is provided with a spring. The other end of the spring protrudes upward along the air passage passing through the piston head and is slightly lifted on the air inlet baffle. In the off state of the air compressor, the action area of the air inlet baffle is kept open relative to the air passage. The air passage of the piston body is unobstructed, so that the pressure in the cylinder is balanced with the surrounding atmosphere. When the air compressor is started again, the piston body will not have additional resistance (back pressure resistance) during the upstroke, so that the piston body can maintain smooth compression efficiency during reciprocating motion in the cylinder, and has the advantages of safety and longer service life, and can more easily and quickly inflate the article to be inflated.

[0004] Another main object of the present application is to provide an air intake baffle for a cylinder piston body, which has a multi-track bending section formed on the baffle between a positioning area and an action area by a mechanical process, and the multi-track bending section contains a plurality of bending tracks, so that an air compressor with large output power can smoothly perform up and down strokes with better buffering capacity.

[0005] Another main object of the present application is to provide an air intake baffle for a cylinder piston body, which has a positioning area provided with a round hole, and a top end plane of a piston head corresponding to the round hole is provided with a fixing pin.

[0006] Another main object of the present application is to provide an air intake baffle for a cylinder piston body, which has a piston head and a piston rod extended below the axis of the piston head, the piston rod is provided with a cavity penetrating through left and right sides of the piston rod, which is connected with the outside and forms an air passage, the cavity is connected with an air passage of the piston head, and a vertical columnar tip is provided at the bottom end surface of the cavity, and a spring is sleeved on the columnar tip, which penetrates through the air passage of the piston head along the cavity of the piston rod.

[0007] Further, the multi-track bending section forms a first bending track and a second bending track, and a positioning area and an action area with different horizontal heights are provided on the air intake baffle by the multi-track bending section as a boundary, so that an air compressor with large output power can more smoothly perform up and down strokes.

[0008] Further, the round holes provided in the positioning area of the second bending track extend through upper step platforms provided in the top end plane of the piston head and stop at bottom step platforms provided in the top end plane of the piston head.

[0009] After the above technical scheme is adopted, in the state of shutdown of the air compressor, a small angle ventilation space is formed between the top end surface of the piston head and the air intake baffle, and when the air compressor is finished operating, the compressed air remaining in the cylinder can be discharged through the air passage via the ventilation space, so that the pressure in the cylinder is balanced with the surrounding atmosphere, so that when the piston body of the air compressor is started again, there is no additional resistance when the piston body performs upstroke, avoiding the instantaneous increase of the compression load and the surge of the current, so that the piston body can maintain smooth compression efficiency when performing reciprocating motion in the cylinder, and has the advantages of safety in use, prolonging the service life, and easily and quickly inflating the air. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a perspective exploded view of the piston body, spring and air intake baffle of the present application;

[0011] Figure 2 is a perspective view of the piston body, spring and intake shutter of the present invention;

[0012] Figure 3 is a schematic view of the compressed air flow when the piston body of the present invention is in the down stroke operation in the cylinder;

[0013] Figure 4 is a partial enlarged sectional view of the piston body of the present invention;

[0014] Figure 5 is a partial enlarged schematic view of the piston body of the present invention when in the up stroke operation in the cylinder;

[0015] Figure 6 is a schematic view of the air compressor of the present invention provided in the case body;

[0016] Figure 7 is a perspective exploded view of another piston body;

[0017] Figure 8 is a sectional plan view of another piston body;

[0018] Figure 9 is a partial enlarged sectional view of another piston body.

[0019] Symbol explanation:

[0020] 1... case body

[0021] 10... air compressor

[0022] 11... base plate

[0023] 12... motor

[0024] 13... cylinder

[0025] 14... transmission mechanism

[0026] 141... crankshaft

[0027] 15... air reservoir

[0028] 16... pressure display meter

[0029] 21... piston head

[0030] 210... top end plane

[0031] 211... fixed pin

[0032] 212... fixed pin

[0033] 23... intake passage

[0034] 24... air-tight ring

[0035] 5...piston rod

[0036] 50... caves

[0037] 51...round hole

[0038] 52...Air passage

[0039] 53...column tip

[0040] 54...spring

[0041] 7...Intake damper

[0042] 71...Bends and turns

[0043] 711... Bending track

[0044] 712...Second Bend Track

[0045] 713... Third bend in the track

[0046] 72... Positioning Area

[0047] 721...round hole

[0048] 722...round hole

[0049] 73... scope

[0050] 81...piston head

[0051] 82... Upper Platform

[0052] 83... Upper-level platform

[0053] 84...bottom-level platform

[0054] 85...bottom-level platform

[0055] 86...Intake channel

[0056] 87...Air passage

[0057] 870... Cave

[0058] 871...column tip

[0059] 88...piston rod

[0060] 9...Intake damper

[0061] 91...Location area

[0062] 911...round hole

[0063] 912...round hole

[0064] 92...action area

[0065] 93...multi-track bending section

[0066] 931...first bending track

[0067] 932...second bending track

[0068] Z...ventilation space

[0069] θ...angle DETAILED DESCRIPTION

[0070] Please refer to Figure 6 Fig. 1 shows an air compressor 10 of the present application, which can be arranged in a cabin, a box 1 or a place where it is working, such as Figure 6 Fig. 1 shows a box 1 in which the air compressor 10 is arranged, which can be used for air charging or air charging combined with a rubber supplement device (not shown in the prior art) to supplement rubber. The air compressor 10 includes a base plate 11 for fixing a motor 12, a cylinder 13 combined with the base plate 11, and the base plate 11 can be arranged with a transmission mechanism 14 of the air compressor 10, which is connected with a piston body, please refer to Figures 1 to 5 The piston body includes a piston head 21, which has a top end plane 210 at the upper end of the piston head 21, and a gas seal ring 24 is installed around the outer periphery of the piston head 21. The gas seal ring 24 realizes continuous sealing around the piston body and the inner surface of the cylinder 13 during operation of the air compressor 10. The aforementioned piston head 21 is provided with an air inlet passage 23 passing through the top and bottom. The aforementioned piston head 21 extends downwardly to a piston rod 5, which is provided with a circular hole 51 at the lower end and is pivotally fixed with a crankshaft 141 in the transmission mechanism 14. The upper end of the aforementioned piston rod 5 is provided with a cavity 50 passing through the left and right sides of the solid body and forms an air passage 52. The cavity 50 is connected with the air inlet passage 23 of the aforementioned piston head 21. The bottom end face of the cavity 50 is provided with a vertical columnar tip 53, and a spring 54 is sleeved on the columnar tip 53. The spring 54 extends through the air inlet passage 23 of the aforementioned piston head 21 along the cavity 50 of the piston rod 5, so that the other end of the spring 54 abuts against the back surface of the action area 73 of the air inlet baffle 7. The air inlet baffle 7 can also maintain the state that the action area 73 of the air inlet baffle 7 is opened at a small angle θ due to the force of the spring 54. This design enables the air passage 52 and the air inlet passage 23 to be connected with the atmosphere. When the output shaft of the motor 12 drives the crankshaft 141 of the transmission mechanism 14 to rotate, it also drives the piston body to perform upstroke and downstroke in the cylinder 13, so as to produce compressed air into the air storage seat 15 (refer to Figure 6), and the compressed air can enter the pressure display meter 16 through the gas delivery manifold to display the pressure, and the tire can be inflated through the connection of the gas delivery hose (not shown in the figure), and the tire can be repaired through the gas delivery hose or the valve switch to supply the tire repair fluid to the damaged tire to repair and inflate the tire (not shown in the figure), but the current use state is not shown and the detailed structure is not described, which is hereby stated in advance.

[0071] The piston body of the air compressor 10 is provided with an air inlet baffle 7 at the piston head 21, and the air inlet baffle 7 is provided with a bending section 71. The bending section 71 is not arbitrarily bent to have a bending angle to form the bending track 711 in the specification, but is precisely manufactured by mechanical process to have a bending angle to form the bending section 71 and the bending track 711 attached thereto, whether it is one or multiple bending tracks, that is, the bending section 71 contains the bending track 711, the second bending track 712, and the third bending track 713 (see Figure 4 ) to meet the demand of different output power of the air compressor. When external pressure acts on the air inlet baffle 7, the stress of the air inlet baffle 7 can follow the predetermined bending track 711 (or track) to open and close up and down. The positioning area 72 on one side of the bending section 71 can be used for being installed on the aforementioned piston head 21, that is, the piston head 21 is provided with two separate fixing pins 211, 212, and the positioning area 72 of the air inlet baffle 7 is provided with separate round holes 721, 722 relative to the fixing pins 211, 212. The round holes 721, 722 of the air inlet baffle 7 are respectively positioned on the fixing pins 211, 212 of the piston head 21, so that the air inlet baffle 7 can be firmly positioned on the piston head 21. The other side of the aforementioned air inlet baffle 7 is the action area 73, which can cover the air inlet channel 23 of the piston body. The action area 73 of the air inlet baffle 7 and the positioning area 72 of the air inlet baffle 7 are connected by the bending section 71 as the axis, so that the front surface of the air inlet baffle 7 (that is, the top surface of the air inlet baffle 7 towards the top of the cylinder 13 when it moves up) forms an obtuse angle less than 180 degrees, and the back surface of the action area 73 of the air inlet baffle 7 naturally forms an opening state with the top end plane 210 of the aforementioned piston head 21 at a small angle θ, forming an air passage space Z, which can be simultaneously referred to Figure 3 and Figure 4, the piston body of the air compressor 10 in the off state, the intake blocking piece 7 of the role of 73 relative to the intake passage 23 and the air passage 52 is kept open state, and because in the piston rod 5 hole 50 is provided with a spring 54, the other end of the spring 54 also touches the intake blocking piece 7 of the role of 73 back, let the intake blocking piece 7 and the piston head 21 top plane presents a open state of ventilation space Z, based on the design of the bending section 71 of the intake blocking piece 7 and the spring 54 against the back of the intake blocking piece 7 of the role of 73, let the intake blocking piece 7 open or piston head 21 static stage, the intake blocking piece 7 can be kept in the smooth operation and protection to avoid the occurrence of elastic fatigue, by the piston body of the intake passage 23 because of smooth, so that the pressure in the cylinder 13 and the surrounding atmosphere balance, let the air compressor 10 again start its piston body in the upstroke (such as Figure 5 ) will not have additional resistance (back pressure resistance), so that the piston body in the cylinder 13 to maintain smooth compression performance when reciprocating, and more use safety and prolong its service life, and can more easily and quickly fill the gas. Figure 3 And Figure 5 for the piston body in the cylinder 13 to perform the action diagram of upstroke and downstroke, the piston body upstroke, such as Figure 5 , the spring 6 will be compressed and the role of 73 of the intake blocking piece 7 is closed to the intake passage 23 of the piston body, the piston body downstroke stage, the spring 6 will stretch and open the role of 73 and bending section 71 of the intake blocking piece 7 away from the intake passage 23 to open state such as Figure 3 And Figure 4 , when the piston body is in the static state, because the spring 6 props up the role of 73 of the intake blocking piece 7, the role of 73 of the intake blocking piece 7 is in the open angle θ state, as shown in Figure 3 , so that the high pressure air remaining in the cylinder 13 can be discharged through the ventilation space Z and the intake passage 23, and the pressure in the cylinder 13 and the atmospheric pressure outside the cylinder 13 are balanced, so that the next time the piston body operates again can overcome the back pressure of the intake blocking piece 7.

[0072] Based on the demand for different size output power of air compressor, the size and hardness of the intake blocking piece 7 need to be changed, the present application can be used in larger power output air compressor, so that the intake blocking piece can have larger amplitude of up and down, therefore, as described above, the bending section can be provided with a plurality of bending track to meet the demand of different size output power of air compressor, please refer to Figures 7 to 9As shown, the bending section in another embodiment of the present application is a multi-track bending section 93. The multi-track bending section 93 refers to a part with an angle shape completed by a mechanical process. That is, the multi-track bending section 93 forms a first bending track 931 and a second bending track 932. The multi-track bending section 93 divides the intake blocking sheet 9 into a positioning area 91 and an action area 92 with a different horizontal height. The circular holes 911, 912 of the positioning area 91, which is extended from the second bending track 932, can respectively pass through the upper step platforms 82, 83 on the top surface of the piston head 81 and stop at the bottom step platforms 84, 85 on the top surface of the piston head 81. The piston head 81 is further extended to a piston rod 88. A hollow 870 is formed on the upper end of the piston rod 88 and an air passage 87 is formed. A vertical column 871 is arranged on the bottom end of the hollow 870. A spring 54 is arranged on the vertical column 871. When the air compressor is in high-power output, the first bending track 931 is on the top surface of the piston head 81. The sheet of the action area 92 of the intake blocking sheet 9 forms an opening state with the top surface of the piston head 81 at a small angle θ. When the piston body of the air compressor is in a stationary state, the spring 54 lifts the intake blocking sheet 9 and the first bending track 931. The action area 92 of the intake blocking sheet 9 is open at an angle θ. The action area 92 of the intake blocking sheet 9 is open relative to the upper and lower through air passages 86 of the piston body. The air passage 87 on the upper end of the piston rod 88 is connected to the air passage 86 of the piston body. The pressure in the cylinder 13 is balanced with the surrounding atmosphere. When the air compressor is started again, the piston body does not have additional resistance (back pressure resistance) during the upstroke. The piston body can maintain smooth compression performance during reciprocating motion in the cylinder 13. The use is safe and the service life is prolonged. The air can be filled more easily and quickly. The high-power output can make the opening and closing of the intake blocking sheet 9 more smooth and protect the intake blocking sheet 9 from being damaged.

Claims

1. An intake baffle for a cylinder piston body, characterized in that: An intake baffle is installed on the top surface of the piston head of the piston body installed in the air compressor. The intake baffle has a bent section. One side of the bent section is a positioning area for installation on the top surface of the piston head, and the other side is an action area that covers the intake passage of the piston body. The action area and the positioning area of ​​the intake baffle are separated by the bent section, so that the outer surface of the intake baffle forms an obtuse angle of less than 180 degrees. At the same time, the action area of ​​the intake baffle naturally forms an open state with an angle between the inner surface and the top surface of the piston head, forming a ventilation space. A piston rod extends downward from the piston head. The upper end of the piston rod has a hole that runs through the left and right sides of the piston rod, forming an air passage. The hole is connected to the intake passage of the piston head. At the bottom end of the hole is a... A spring is fitted onto the upright column tip, extending through the intake passage of the piston head along the hole in the piston rod. The other end of the spring rests against the back of the working area of ​​the intake baffle, allowing the intake baffle to remain open due to the force of the spring, thus connecting the air passage and intake passage to the atmosphere. The zigzag section has at least one bent track to accommodate the different output power requirements of the air compressor. The at least one bent track means that the zigzag section contains a first bent track, a second bent track, and a third bent track, which makes the air compressor with a larger output power more buffered and able to smoothly perform the up and down stroke. When the piston body is stopped and stationary, the working area of ​​the intake baffle and the top plane of the piston head remain open.

2. The intake baffle of the cylinder piston body according to claim 1, characterized in that: The piston head is provided with two separate fixing pins, and a separate circular hole is provided in the positioning area of ​​the air intake baffle relative to the fixing pins. The circular hole of the air intake baffle is used to position the fixing pins of the piston head, so that the air intake baffle is firmly positioned on the piston head. When the piston body is stopped and stationary, the working area of ​​the air intake baffle is open relative to the air intake channel of the piston head.

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