JP2016509154A - Air compressor equipment - Google Patents

Abstract

The present invention provides an air compressor device, and in particular, it is not necessary to install a mechanical pressure safety valve, and when the air compressor keeps the pressure within a safe value range during the operation stage and injects gas into the tire, It has a structure that protects the tire so that the pressure does not exceed a safe value, which is different from the piston head of the piston body even if the piston body of the air compressor moves linearly in the cylinder and reaches the top dead center. In addition, a buffer space still exists between the top wall inside the cylinder, the capacity space of the secondary air chamber is adjusted by the adjustment valve provided in the air storage unit, and the set tire pressure of the gas-injected tire is adjusted by the air compressor. The air compressor does not need to reduce the pressure by the pressure relief valve, and the present invention can reduce the manufacturing cost and protect the tire.

Description

  The present invention provides an air compressor device that does not require a pressure safety valve and that does not overpressurize when injecting gas into a tire.

The present inventor has been devoted to research and development of a small air compressor for many years, and it is possible to assemble an early air compressor, which has been complicated and time-consuming and time-consuming, with a simple structure and easily and quickly. Converted to a product that can be used. The outlet tube of U.S. Pat. No. 7,46,018 is provided with a plurality of ducts, one of which is fitted with a mechanical pressure relief valve. When the piston of the air compressor moves linearly in the cylinder and reaches the top dead center, the top surface of the piston head of the proposed piston comes into contact with the top wall of the cylinder, so that there is almost no buffer space, and air compression When the machine becomes higher than the set safety tire pressure of the gas-injected tire, the mechanical pressure safety valve (safety valve) will be activated and the pressure will drop, but if the mechanical safety valve (safety valve) is too old, it will become clogged and malfunction When a person injects gas into a tire, there is a risk that the tire will easily puncture if too much gas is injected into the tire.
(Content of invention)

  The object of the present invention is to avoid the need to install a mechanical pressure relief valve, keep the air compressor within the pressure safe value range during operation, and not to exceed the tire pressure safety value when injecting gas into the tire. An object of the present invention is to provide an air compressor device that protects tires.

In order to achieve the above object, the solution of the present invention is:
The air compressor device includes a box body, and an air compressor that generates air pressure when the power is turned on is provided inside the air compressor device. The compressed air in the cylinder is pushed out and enters the air storage unit of the air compressor, and a plurality of manifolds communicating with the air storage unit are provided on the air storage unit.

  Even if the piston body that reciprocates in the cylinder reaches top dead center, a buffer space still exists between the piston head of the piston body and the top wall inside the cylinder, and a manifold that does not communicate with the air storage unit is a cylinder. The manifold is provided with a flow port communicating with the compression chamber of the cylinder, and a sub-air chamber is formed in the manifold by a rotatable control valve provided at the other end of the manifold. .

After adopting the above-described structure, the air compressor device according to the present invention is configured such that even if the piston body of the air compressor moves linearly in the cylinder and reaches top dead center, the piston head of the piston body and the inside of the cylinder A buffer space still exists between the top wall and the air compressor, which combines the auxiliary air chamber and the buffer space in the cylinder to increase the safety of use. Compared with the prior art, the air compressor device according to the present invention does not need to be equipped with a mechanical pressure safety valve, the air compressor keeps the pressure within the safe value range during the operation stage, and when injecting gas into the tire, In addition to achieving the objective of protecting the tire so that the tire pressure does not exceed a safe value, the manufacturing cost can also be reduced.
(Implementation method)

  In order to further explain the technical means of the present invention, the present invention will be described in detail below by means of specific examples.

First, reference will be made to FIGS. As shown in FIGS. 1 to 4, the air compressor device of the present invention includes a box body 1. On the box body 1, a push button type switch 11, a button 12, and a hollow through hole 13 are provided. An air compressor is provided inside the box body 1. The air compressor has a structure in which a cylinder 3 on which a piston body 25 operates and a main frame 20 on which a motor 21 is fixed are integrally formed.

  A power mechanism of an air compressor may be fixed to the main frame 20. The power mechanism includes a motor 21, a transmission pinion 22, a gear 23, a heavy weight rotating disk 28 having a crank pin 24, and a heat radiating fan 27. The motor 21 drives the power mechanism of the air compressor, the piston head 26 of the piston body 25 performs a reciprocating compression operation in the inner chamber 34 of the cylinder 3, and the compressed air passes through the air hole 32 to the valve body 41. The spring 42 is compressed by being pushed, and the compressed air enters the air storage unit 5.

  On the air storage unit 5, a plurality of manifolds 52, 53, and 55 communicating with the air storage unit 5 are provided (refer to FIG. 9 simultaneously). A hose 91 is connected to the manifold 52. The manifold 53 is applied to the installation of the gas vent valve 7. A pressure gauge 9 is installed in the manifold 55.

The most important structural feature of the present invention is that even if the piston main body 25 of the air compressor moves linearly in the cylinder 3 and reaches the top dead center, the piston head 26 of the piston main body 25 and the top of the cylinder 3 inside. As shown in FIG. 7, the buffer space 36 still exists between the wall 31 and the air compressor so that it does not become higher than the set tire pressure value of the gas-injected tire. Therefore, the user can easily inject gas into the tire to protect the tire without lowering the pressure. Another feature is that a manifold 54 that does not communicate with the air storage unit 5 is provided on the outer wall of the cylinder 3, has a secondary air chamber 541 that communicates with the compression chamber 33 of the cylinder 3, and is connected to the other end of the manifold 54. The control valve 8 is provided, and the size of the capacity space of the auxiliary air chamber 541 is adjusted by the rotation of the control valve 8.

  Please refer to FIGS. 4 to 8 at the same time. The air storage unit 5 forms a common intermediate wall 30 with the bottom 50 adjacent to the top wall 31 of the cylinder 3. An air hole 32 and a circulation port 35 are formed in the intermediate wall 30. The compression chamber 33 of the inner chamber 34 of the cylinder 3 communicates with the chamber 51 of the air storage unit 5 through the air hole 32, and the compression chamber 33 of the inner chamber 34 of the cylinder 3 and the control valve 8 through the flow port 35. The sub-air chamber 541 formed by being surrounded by the manifold 54 in which is installed is in communication. The valve body 41 is installed at the upper end of the air hole 32 of the intermediate wall 30 described above. The top cover 6 (see FIG. 5) having a rectangular shape is provided with a rotary handle 61 at the upper end thereof. A cylindrical column 62 extends downward from the center of the top cover 6, and a plurality of annular shoulders 621 that are spaced apart from each other extend outward from the cylindrical column 62, and a plurality of annular shoulders 621 are disposed between the top cover 6 and the annular shoulder 621. The concave annular groove 622 is formed. The cylindrical column 62 has a bottom end edge 63. On the bottom end edge 63, a convex pressing portion 64 directed toward the inner center of the cylindrical column 62 is formed. The plurality of seal rings 65 are fitted in the annular groove 622 on the cylindrical column 62 described above.

  The aforementioned top cover 6 is coupled correspondingly on the aforementioned air storage unit 5. As shown in FIG. 3, when the rotary handle 61 is rotated, the top cover 6 is firmly engaged on the air storage unit 5 and there is no risk of loosening. One end of the spring 42 is installed on the valve body 41 described above, and the other end is in contact with the annular shoulder 621 on the cylindrical column 62 of the top cover 6.

  Please refer to FIG. 2 and FIG. 5 simultaneously. The gas vent valve 7 includes a hollow hat-type soft cap 71 and a nut 72. The hollow hat-type soft cap 71 has a front end 711 at one end, an outer ring at the other end, a plurality of bumps 712 spaced apart from each other, and a space between the bumps 712 spaced apart from each other. The flow groove 713 is formed. One end of the nut 72 has an opening 721, and a through hole 722 having an inner diameter smaller than that of the opening 721 is extended to the other end of the nut 72. At this time, after inserting the hat-type soft cap 71 into the manifold 53, the end of the through hole 722 of the nut 72 is brought into contact with the hat-type soft cap 71 and coupled to the manifold 53. The outer ring at one end of the cap 71 is in contact with the inner wall of the manifold 53, and the other end of the hat-type soft cap 71 is in contact with the end of the through hole 722 of the nut 725. The push bar 121 inside the button 12 of the box body 1 is inserted through the nut 72 and corresponds to the front end 711 of the hat-type soft cap 71. When the button 12 is pressed, the front end 711 of the hat-type soft cap 71 of the gas vent valve 7 is pressed, the hat-type soft cap 51 is compressed and deformed, and too much pressure of the gas injection is shown in FIG. As described above, the gas is discharged from the manifold 53 attached to the gas vent valve 7. The regulating valve 8 has a concave annular groove 81 formed on the outer peripheral wall thereof, and a seal ring 82 is fitted in the annular groove 81. When the adjusting valve 8 is screwed into the manifold 54 and rotated, the inner volume of the auxiliary air chamber 541 can be adjusted. As shown in FIGS. 5 and 7, the compression chamber of the inner chamber 34 of the cylinder 3 is adjusted. It affects the internal volume of 33.

  Even if the linear motion of the piston body 25 that reciprocates in the inner chamber 34 of the cylinder 3 in the present invention reaches the top dead center, as shown in FIG. 7, the piston head 26 of the piston body 25 and the inside of the cylinder 3 The buffer space 36 still exists between the top wall 31, the top plane end of the piston head 26 is not in contact with the top wall 31 of the cylinder, and the volume space X (see FIG. 7) remains, and the piston body 25 The air in the compression chamber 33 pushes the valve body 41 by the air hole 32 formed in the top wall 31 of the cylinder 3 in the forward travel, and the spring 42 is compressed. The compressed air is compressed into the chamber 51 of the air storage unit 5. After entering, it is connected to objects of different properties and functions via the manifolds 52, 53, 55. The aforementioned valve body 41 is driven and restricted by the pressing portion 64 at the bottom end of the cylindrical column 62 of the top cover 6, and its operating state is shown in FIGS. 7 and 9.

  As shown in FIGS. 6 and 7, when the compressed air generated by the air compressor is not higher than the set pressure safety value range, the user rotates the control valve 8 in the manifold 54 to rotate the auxiliary air chamber. The internal volume of 541 is finely adjusted, and the internal volume of the compression chamber 33 of the inner chamber 34 of the connected cylinder 3 is adjusted.

  The volume X of the buffer space 36 designed between the top wall 31 of the cylinder of the present invention and the piston head 26 at the top dead center is expressed by the following formula: X = S / (P′−1). can get. Here, X is the distance from the top dead center of the piston body 25 to the top wall 31 of the cylinder 3. S is the set stroke distance of the piston body 25, and is the ratio between the maximum atmospheric pressure output limit value and the atmospheric pressure value.

In the present invention, the X value is estimated by the example. As already known, if the atmospheric pressure 1 atm = 101.325 kpa and the maximum atmospheric pressure output limit value is set to 350 kpa, the ratio between the maximum atmospheric pressure output limit value and the atmospheric pressure value is:
P ′ = 350 kpa / 101.325 kpa = 3.45, the stroke distance S of the piston body 25 is S = 16, and the distance from the piston body 25 at the top dead center to the top wall 31 of the cylinder 3 is X = 16 /(3.45-1)=6.53, and when an air compressor with a stroke distance S of the piston body 25 already fixed is used, rotation is possible when the maximum atmospheric pressure output limit value is not set to 350 kpa. The control valve 8 on the manifold 54 finely adjusts the internal volume of the auxiliary air chamber 541 to adjust the internal volume of the compression chamber 33 of the inner chamber 34 of the cylinder 3 communicating with each other. The air compressor does not need to be reduced by the pressure relief valve, so the user can easily inject gas into the tire and the manufacturer's manufacturing costs You can also reduce

  In summary, when the piston main body 25 of the air compressor of the present invention linearly moves in the cylinder 3 and reaches the top dead center, the piston head 26 of the piston main body 25 and the top wall 31 inside the cylinder 3 In the meantime, the buffer space 36 still exists, preventing the air compressor from becoming too high above the safe pressure value of the gas-filled tire, and with the aid of the regulating valve 8 the volume space X of the buffer space 36 in the cylinder 3 Has flexibility and choice and is practical.

  The above-described embodiments and drawings do not limit the product form and style of the present invention, and any appropriate changes or modifications made by those skilled in the art do not depart from the scope of the claims of the present invention.

FIG. 1 is a perspective view of a box body of an air compressor device according to the present invention. FIG. 2 is an exploded perspective view of the air compressor of the present invention. FIG. 3 is a perspective view of the air compressor of the present invention. FIG. 4 is a cross-sectional view of the air compressor device of the present invention. FIG. 5 is a partially enlarged view of FIG. FIG. 6 is an operation diagram showing an operation of lowering the pressure by operating the gas vent valve of the present invention. FIG. 7 is an operation diagram in which the volume of the auxiliary air chamber is changed by adjusting with the control valve according to the present invention. FIG. 8 is a view showing a state where a buffer space still exists between the piston head of the piston body and the top wall inside the cylinder when the piston body of the present invention reaches top dead center. FIG. 9 is a cross-sectional view from another angle of the present invention.

DESCRIPTION OF SYMBOLS 1 Box body 11 Switch 12 Button 121 Push bar 13 Through-hole 20 Main frame 21 Motor 22 Pinion 23 Gear 24 Crank pin 25 Piston main body 26 Piston head 27 Radiating fan 28 Heavy-duty turntable 3 Cylinder 30 Intermediate wall 31 Top wall 32 Air hole 33 Compression chamber 34 Inner chamber 35 Flow port 36 Buffer space 41 Valve body 42 Spring 5 Air storage unit 50 Bottom 51 Chamber 52 Manifold 53 Manifold 54 Manifold 55 Manifold 541 Sub air chamber 6 Top cover 61 Rotating handle 62 Cylindrical column 621 Ring shoulder 622 Ring Groove 63 Bottom edge 64 Press part 65 Seal ring 7 Gas vent valve 71 Hat type soft cap 711 Front end part 712 Bump 713 Flow groove 72 Nut 721 Opening 722 Through hole 8 Control valve 81 Ring groove 2 seal ring 9 pressure gauge 91 hose

Claims (4)

The box body includes an air compressor that generates air pressure when the power is turned on. The air compressor causes the piston head of the piston body to reciprocate within the cylinder when the motor is operated. The compressed air in the cylinder is pushed out and enters the air storage unit of the air compressor, and a plurality of manifolds communicating with the air storage unit are provided on the air storage unit,
Even if the piston body that reciprocates in the cylinder reaches top dead center, a buffer space exists between the piston head of the piston body and the top wall inside the cylinder,
A manifold that does not communicate with the air storage unit is located on the outer wall of the cylinder. The manifold is provided with a circulation port that communicates with a compression chamber of the cylinder, and is rotatable at the other end of the manifold. An air compressor apparatus characterized in that a sub air chamber is formed in the manifold by a control valve. A button is provided on the box body,
The manifold is provided with a gas vent valve,
The gas vent valve includes a hollow hat-type soft cap, and the hat-type soft cap has a front end provided at one end, an outer ring provided at the other end, and the outer ring includes a plurality of spaced apart ones. Bumps are provided, and flow grooves are formed between the bumps spaced apart from each other.
One end of the nut has an opening, and the other end of the nut is provided with a through hole having an inner diameter smaller than the opening.
The hat-type soft cap is inserted into the manifold, and the through-hole end portion of the nut is brought into contact with the hat-type soft cap to be coupled into the manifold, and the outer end of the hat-type soft cap is The ring is in contact with the inner wall of the manifold, the other end of the hat-type soft cap is in contact with the end of the through hole of the nut, and the push bar inside the button of the box body is inserted through the nut. Corresponding to the front end portion of the hat-type soft cap, and when the button is pressed against the front end portion of the hat-type soft cap of the degassing valve, the hat-type soft cap is compressed and deformed, and the flow groove 2. The air compressor apparatus according to claim 1, wherein an excessive pressure of the gas injection object is reduced through the through hole. An adjustable control valve is provided in the manifold,
A concave ring groove is formed on the outer peripheral wall of the control valve,
A seal ring is fitted in the annular groove,
2. The air compressor device according to claim 1, wherein when the adjustment valve is screwed into the manifold and rotated, the internal volume of the auxiliary air chamber is adjusted. In the air storage unit, a bottom portion forms a common intermediate wall adjacent to the top wall of the cylinder, an air hole is formed in the intermediate wall, and an air hole of the inner chamber in the cylinder is formed through the air hole. The compression chamber communicates with the chamber of the air storage unit;
A valve body is installed at the upper end of the air hole of the intermediate wall,
The top cover having a rectangular shape is provided with a rotation handle at the upper end thereof, and a cylindrical column extends downward from the center of the top cover, and a plurality of annular shoulders spaced apart from each other extend outward on the cylindrical column. A plurality of concave annular grooves are formed between the top cover and the annular shoulder, the cylindrical column has a bottom edge, and the cylindrical column is formed on the bottom edge. A convex pressing part toward the inner center is formed,
On the annular shoulder on the cylindrical column, a plurality of seal rings are fitted,
The top cover is correspondingly coupled on the air storage unit, and when the rotary handle is rotated, the top cover is firmly engaged on the air storage unit,
2. The air compressor device according to claim 1, wherein one end of the spring is provided on the valve body, and the other end abuts on the annular shoulder on the cylindrical column of the top cover.

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