JP6169727B2 - Air compressor equipment - Google Patents

Description

  The present invention eliminates the need for attaching a mechanical safety valve, maintains the pressure within a safe value range during the operation stage of the air compressor, and prevents the tire pressure from exceeding the safe value when injecting gas into the tire. An air compressor device for protecting the air is provided.

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 top dead center, the top surface of the piston head in the proposed piston is completely abutted against the top wall of the compression chamber of the cylinder, In the operation of the stroke, the compressed air completely enters the exhaust discharge pipe communicating with the compression chamber of the cylinder, but it is added if the air compressor becomes higher than the set tire pressure of the measured tire due to improper gas injection. The pressure must be automatically reduced by a mechanical safety valve, but if the mechanical pressure valve is too old, it will clog and fail, and when the user injects gas into the tire, If too much gas was injected into the tire, there was a risk that the tire would easily puncture.
(Content of invention)

  The object of the present invention is to maintain a pressure within a safe value range when the air compressor is in an operating stage without attaching a mechanical pressure safety valve, and when injecting gas into the tire, the tire pressure exceeds the safe value. Another object of the present invention is to provide an air compressor device that prevents the tire from bursting.

In order to achieve the above object, the solution of the present invention is:
An air compressor device includes a box body, and an air compressor that generates air pressure when a power source is turned on is provided in the air compressor device. Reciprocates in the cylinder, 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.

  A manifold having a sub air chamber is provided on the outer wall of the cylinder of the air compressor, and the sub air chamber circulates with the cylinder compression chamber, but does not communicate with the exhaust air storage unit. When the top surface of the piston head is completely brought into contact with the top wall surface of the compression chamber of the cylinder, a part of the compressed air enters the auxiliary air chamber, and the operation of the downward movement of the piston body becomes smooth, Even if a pressure safety valve is not installed in the air compressor, the safe pressure value range is not exceeded when gas is injected.

  After adopting the above-described structure, the air compressor apparatus according to the present invention is provided with a manifold having a sub air chamber on the outer wall of the cylinder of the air compressor, and the sub air chamber circulates with the compression chamber of the cylinder. When the top surface of the piston head of the air compressor is completely in contact with the top wall of the compression chamber of the cylinder without communicating with the air storage unit for exhaust, a part of the compressed air enters the auxiliary air chamber. In addition, the operation of the downward stroke of the piston body becomes smooth, and even if a pressure safety valve is not installed in the air compressor, the safe pressure value range is not exceeded when gas is injected.

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, To achieve the purpose of protecting the tire so that the tire pressure does not exceed a safe value. According to the present invention, the manufacturing cost can be reduced, and the operation of the downward movement of the piston body can be made smooth.
(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 in 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. 8 at the same time). 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 a manifold 54 is provided on the outer wall of the cylinder 3. In the manifold 54, a sub air chamber 541 communicating with the compression chamber 33 of the cylinder 3 through the flow port 35 is provided. The sub air chamber 541 is a chamber 51 of the air storage unit 5 used for exhaust. A control valve 8 that can be screwed is provided in the outer end opening of the manifold 54 without communicating with the manifold 54. By adjusting the screwing depth of the control valve 8, the volume of the auxiliary air chamber 541 can be adjusted.

  Please refer to FIGS. 4 to 7 at the same time. The air storage unit 5 is adjacent to the top wall 31 of the cylinder 3 at the bottom 50, and a common intermediate wall 30 is formed. An air hole 32 and a circulation port 35 are formed on the intermediate wall 30. The air hole 32 allows the compression chamber 33 of the inner chamber 34 in the cylinder 3 to communicate with the chamber 51 of the air storage unit 5, and the sub-air of the compression chamber 33 of the inner chamber 34 of the cylinder 3 and the manifold 54 through the flow port 35. The chamber 541 communicates. 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 into the annular shoulder 621 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. 2, 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. 3 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 portion 711 at one end, an outer ring at the other end, a plurality of bumps 712 spaced apart from each other, and a plurality of bumps 712 spaced apart from each other. The flow groove 713 is formed. One end of the nut 72 has an opening 721, and the other end of the nut 72 extends from a through hole 722 having an inner diameter smaller than that of the opening 721. 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 the excessive pressure of the gas injection object is shown in FIGS. 6, the gas is discharged from the manifold 53 attached to the gas vent valve 7. The control valve 8 is screwed into the manifold 54 and can rotate to adjust the internal volume of the auxiliary air chamber 541.

  When the reciprocating linear motion performed in the inner chamber 34 of the cylinder 3 reaches the top dead center, the piston body 25 of the present invention completely contacts the top wall 31 of the compression chamber 33 of the cylinder 3 with the top surface 260 of the piston head 26. When the valve body 41 is compressed and pushed through the air hole 32 formed in the top wall 31 of the cylinder 3 at this time, the spring 42 is compressed and compressed. The air enters the chamber 51 of the air storage unit 5 and is connected to objects of different properties and functions through the manifolds 52, 53 and 55. However, in the compressed air output from the cylinder 3, a part of the air still enters the sub air chamber 541 of the manifold 54 through the flow port 35 and depends on the amount of air stored in the sub air chamber 541. When the air compressor injects gas, the pressure value does not exceed the safe range, and when the downward movement stroke of the piston body 25 is started, the operation becomes smooth. When the valve body 41 described above is driven and restricted by the pressing portion 64 at the bottom end of the cylindrical column 62 of the top cover 6, the operation state is shown in FIGS. 7 and 8.

  Please refer to FIG. 6 and FIG. When the internal pressure of the gas injection object exceeds the range of the safe pressure value, the user operates the gas vent valve 7 to release the pressure.

  In summary, a manifold 54 having a secondary air chamber 541 is provided outside the cylinder 3 of the present invention. The auxiliary air chamber 541 communicates with the compression chamber 33 of the cylinder 3 through the circulation port 35. The air storage unit 5 extending to the outside of the cylinder 3 communicates with the compression chamber 33 of the cylinder 3 through the air hole 32, but the auxiliary air chamber 541 and the chamber 51 of the air storage unit 5 do not communicate with each other, and most of them. The compressed air is output from the duct provided in the air storage unit 5 to other functional members and the gas injection object, and the remaining compressed air enters the auxiliary air chamber 541 and remains. Such a structural design prevents the injection of gas whose pressure value exceeds the safe range when the piston body 25 operates without providing a pressure safety valve, and also makes the operation of the downward movement of the piston body 25 smooth. Provide inventive step.

  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 an exploded perspective view showing the air compressor of the present invention as seen from another angle. 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 present invention changes the volume of the auxiliary air chamber by adjusting with the control valve. FIG. 8 is a cross-sectional view showing the air compressor of the present invention as seen from another angle.

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 260 Top surface 27 Radiating fan 28 Heavy-duty turntable 3 Cylinder 30 Middle 31 Wall top wall 32 Air hole 33 Compression chamber 34 Inner chamber 35 Flow port 41 Valve body 42 Spring 5 Air storage unit 51 Chamber 52 Manifold 53 Manifold 54 Manifold 55 Manifold 541 Auxiliary air chamber 6 Top cover 61 Rotating handle 62 Cylindrical pillar 621 Annular shoulder 622 Annular groove 63 Bottom edge 64 Pressing portion 65 Seal ring 7 Gas vent valve 71 Hat type soft cap 711 Front end portion 712 Bump 713 Flow groove 72 Nut 721 Opening 722 Through hole 8 Control valve 9 Pressure gauge 91 Hose

Claims (3)

An air compressor device,
Including the box body, inside it is provided with an air compressor that generates air pressure when the power is turned on,
In the air compressor, when the motor operates, the piston head of the piston body reciprocates in the cylinder, the compressed air in the cylinder is pushed out and enters the air storage unit of the air compressor,
Wherein the on air storage unit is provided with a multiple manifold, at least one of said manifold has a sub air chamber,
The auxiliary air chamber circulates with the compression chamber of the cylinder, but does not communicate with the air storage unit for exhaust,
An adjustment type adjustment valve is provided in the manifold, and the internal volume of the auxiliary air chamber is adjusted by the adjustment valve,
When the top surface of the piston head of the air compressor is completely brought into contact with the top wall surface of the compression chamber of the cylinder, a part of the compressed air enters the sub air chamber and An air compressor apparatus characterized in that the operation of the moving stroke becomes smooth and that the safe pressure value range is not exceeded when gas is injected without installing a pressure safety valve in the air compressor. A button is provided on the box body,
Applying the manifold on the air storage unit to the installation of a 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, a flow groove is formed between the bumps spaced apart from each other, one end of the nut has an opening, and the other end of the nut extends from a through hole having an inner diameter smaller than the opening,
The hat type soft cap is charged into the manifold, the end portion of the through hole of the nut is brought into contact with the hat soft cap is coupled into the manifold, the other end of the hat-type soft cap The outer 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 in the box body is the nut When the button is pressed, the front end of the hat-type soft cap of the gas vent valve is pressed against the front end of the hat-type soft cap, and the hat-type soft cap is compressed and deformed. The air compressor apparatus according to claim 1, wherein an excessive pressure of the gas injection object is lowered through the flow groove and the through hole. A common intermediate wall is formed adjacent to the top wall of the cylinder at the bottom of the air storage unit, an air hole is formed on the intermediate wall, and the inner chamber of 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 rotary handle at the upper end, 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 end edge, and the bottom end edge has an inner center of the cylindrical column. A convex pressing part toward the
A plurality of seal rings are fitted to the annular shoulder on the cylindrical column,
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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