CN104903579B - An air compressor device - Google Patents

Abstract

An air compressor device comprises a housing (1) in which an air compressor is arranged. A motor (21) drives a piston head (26) of a piston body (25) to reciprocate in a cylinder (3), so that compressed gas in the cylinder (3) is pushed into an air storage seat (5). The air storage seat (5) is provided with a plurality of manifolds (52, 53, 55) that can be connected to the air storage seat (5). A manifold (541) having a secondary air chamber (542) is provided on the outer wall of the cylinder (3). ), the auxiliary air chamber (541) is in communication with the compression chamber (33) of the cylinder (3) but is not in communication with the air storage seat (5). When the top plane of the piston head (26) of the air compressor completely contacts the inner wall of the compression chamber (33) of the cylinder (3), part of the compressed air enters the auxiliary air chamber (541), which not only makes the downward stroke of the piston body (25) smoother, but also allows the air compressor to prevent the occurrence of inflation action exceeding the safety pressure value range without the need for a separate pressure safety valve.

Description

An air compressor device

technical field

The present invention provides an air compressor device, which does not need to be equipped with a mechanical safety valve, so that the air compressor can be kept within the pressure safety value range during the operation stage, so as to protect the tire from exceeding the tire pressure when inflating safe value.

Background technique

The inventor has devoted himself to the research and development of small air compressors for a long time, not only transforming the earlier air compressors, which were labor-intensive and complicated in structure, into products with a simplified structure and easy and quick assembly. Among them, in U.S. Patent No. 7,462,018, the gas collection seat (outlet tube) of the case is provided with a plurality of outlet manifolds (duct), and one of the outlet manifolds (duct) is used to assemble a mechanical pressure safety valve (safetyvalve) ), when the piston body of the air compressor moves linearly in the cylinder and is located at the top dead center, the top plane of the piston head in the piston body of this case is completely against the top wall surface of the cylinder compression chamber, and the movement of the stroke on the piston body It can let the compressed air completely enter the air collecting seat that is connected with the cylinder compression chamber as the air outlet. However, under improper inflation operation, it is easy to make the air compressor produce a higher tire pressure value than the tire to be tested. At this time, it must In addition, a mechanical pressure safety valve (safetyvalve) is used to automatically release the pressure. If the mechanical pressure safety valve (safetyvalve) is stuck due to a long service life, it will cause damage to the tire when the user inflates the tire. Over-inflated tires are prone to the risk of blowouts.

Contents of the invention

The object of the present invention is to provide an air compressor device, which can keep the air compressor within the pressure safety value range during the operation stage without installing a mechanical pressure safety valve, so as to prevent the tire from being blown out of the tire when it is inflated. The problem of tire explosion caused by the pressure safety value.

In order to achieve the above object, the solution of the present invention is:

An air compressor device, including a machine box, which is equipped with an air compressor that can be activated by a power supply to generate air pressure. The air compressor drives the piston head of the piston body to reciprocate in the cylinder when the motor is working. The compressed air in the cylinder is pushed into the air storage seat of the air compressor, and the air storage seat is provided with a plurality of manifolds that can communicate with the air storage seat;

Among them: there is a manifold with auxiliary air chamber on the outer wall of the cylinder of the air compressor. It is completely against the top wall of the compression chamber of the cylinder. At this time, part of the compressed air enters the auxiliary air chamber, which not only makes the downstroke of the piston body smoother, but also prevents the air compressor from exceeding the safety pressure without installing a pressure safety valve. Inflation action for value range.

After adopting the above structure, the present invention relates to an air compressor device, which is provided with a manifold with an auxiliary air chamber on the outer wall of the cylinder of the air compressor, and the auxiliary air chamber communicates with the compression chamber of the cylinder but is not connected with the air outlet. The air storage seat is connected. When the top plane of the piston head of the air compressor completely touches the top wall of the cylinder compression chamber, part of the compressed air enters the auxiliary air chamber, which not only makes the downstroke of the piston body smoother, but also allows the The air compressor does not need to be equipped with a pressure safety valve to prevent inflation beyond the range of the safe pressure value.

Compared with the prior art, the air compressor device of the present invention can achieve the need not to install a mechanical pressure safety valve, that is, the air compressor can be kept within the pressure safety value range during the operation stage, which is enough to protect the tire from being inflated. As for the purpose of producing a safety value exceeding the tire pressure; the present invention can not only reduce the manufacturing cost, but also make the downstroke of the piston body more smooth.

Description of drawings

Fig. 1 is a perspective view of a machine box of an air compressor device according to the present invention.

Fig. 2 is a three-dimensional exploded view of the air compressor related to the present invention.

Fig. 3 is an exploded perspective view from another angle of the air compressor related to the present invention.

Fig. 4 is a schematic cross-sectional view of an air compressor device related to the present invention.

FIG. 5 is a partially enlarged view of FIG. 4 .

Fig. 6 is a schematic diagram of the operation of controlling the air release valve to release pressure in the present invention.

Fig. 7 is a schematic diagram of the action of adjusting the regulating valve to change the volume of the secondary air chamber in the present invention.

FIG. 8 is a schematic cross-sectional view of the present invention at another angle.

In the picture:

Machine box body-1; switch-11; touch plate-12; ejector rod-121;

Through hole-13; Main frame body-20; Motor-21; Pinion-22;

Big gear-23; Crank pin-24; Piston body-25; Piston head-26;

Top plane-260; cooling fan blade-27; weight rotating disc-28; cylinder-3;

Middle-30; Wall top wall-31; Air hole-32; Compression chamber-33;

Inner cavity-34; flow port-35; valve seat-41; spring-42;

Air storage seat-5; content chamber-51; manifold-52, 53, 54, 55;

Auxiliary air chamber-541; Top cover-6; Rotary knob-61; Cylindrical column-62;

Convex ring wall-621; ring groove-622 bottom edge-63; pressing part-64;

Sealing ring-65; air release valve-7; cap type soft cover-71; outer end-711;

Protrusion-712; Flow groove 713; Nut-72; Opening-721;

Through hole-722; regulating valve-8; pressure gauge-9; hose-91.

detailed description

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

Please refer to Fig. 1 to Fig. 4 first, the air compressor device among the present invention, it comprises a machine box body 1, is provided with a push type switch 11, a touch pressure plate 12 and a hollow shape on the machine box body 1 Through holes 13, an air compressor is provided inside the machine box body 1, and the air compressor can design the cylinder 3 that provides the operation of the piston body 25 and the fixed main frame body 20 that provides the motor 21 into an integrally formed structural state.

The main frame body 20 can fix the power mechanism of the air compressor, and the power mechanism includes a motor 21, a small gear 22 for transmission, a large gear 23, a weight rotating disk 28 with a crank pin 24 and a cooling fan for heat dissipation Ye 27. It drives the power mechanism of the air compressor through the motor 21 so that the piston head 26 of the piston body 25 can perform reciprocating compression action in the inner cavity 34 of the cylinder 3, and the compressed air can push the valve seat 41 through the air hole 32 to perform The spring 42 is compressed so that the compressed air can enter the air storage seat 5 .

On the gas storage seat 5, a plurality of manifolds 52, 53, 55 (can be referred to Fig. 8 simultaneously) that communicate with the gas storage seat 5 can be provided, and the manifold 52 can be connected with a flexible pipe 91; It is applied to set a vent valve 7; the manifold 55 can be set with a pressure gauge 9. The most important structural feature of the present invention is: a manifold 54 is provided on the outer wall of the cylinder 3, and a secondary air chamber 541 is provided in the manifold 54, which communicates with the compression chamber 33 of the cylinder 3 through a flow port 35, but The auxiliary air chamber 541 is not connected with the inner chamber 51 of the air storage seat 5 used as an air outlet, and a spirally rotatable regulating valve 8 is provided at the outer end opening of the manifold 54 to adjust the screwing depth of the regulating valve 8 That is, the volume state of the secondary air chamber 541 can be adjusted.

Please cooperate with Fig. 4 to Fig. 7 at the same time, the air storage seat 5 is adjacent to the top wall 31 of the cylinder 3 at the bottom 50 and forms a shared intermediate wall 30, and an air hole 32 and a flow port 35 are provided on the intermediate wall 30 , the air hole 32 allows the compression chamber 33 of the inner cavity 34 of the cylinder 3 to communicate with the inner chamber 51 of the air storage seat 5, and the flow port 35 allows the compression chamber 33 of the inner cavity 34 of the cylinder 3 to communicate with the auxiliary manifold 54. The air chambers 541 are connected; a valve seat 41 can be placed on the upper end of the air hole 32 of the aforementioned intermediate wall 30 . One is rectangular top cover 6 (can refer to Fig. 5), and its upper end is provided with a rotary knob 61, and a cylinder column 62 extends downwards in the center section of top cover 6, extends outwards on cylinder column 62 and has plural There are spaced apart convex ring walls 621, and a plurality of concave ring grooves 622 are formed between the top cover 6 and the convex ring walls 621. The cylindrical column 62 has a bottom end edge 63, and the bottom end edge 63 extends toward the cylinder. A convex pressing portion 64 is further formed in the center of the post 62 ; several sealing rings 65 can be sleeved in the ring groove 622 on the aforementioned cylindrical post 62 .

The aforementioned top cover 6 can be correspondingly combined with the aforementioned air storage seat 5, as shown in Figure 2, by turning the rotary knob 61, the top cover 6 can be firmly locked and combined with the aforementioned air storage seat 5, without loosening Yu. One end of a spring 42 can be placed on the aforementioned valve seat 41 , while the other end is against the protruding ring wall 621 on the cylinder post 62 of the top cover 6 .

Please refer to Fig. 3 and Fig. 5 at the same time, a vent valve 7, which comprises a hollow cap-shaped soft cover 71, is provided with an outer end 711 at one end, and an outer ring is provided at the other end, and the outer ring is provided with A plurality of projections 712 spaced apart form a flow groove 713 between the spaced projections 712; a nut 72 has an opening 721 at one end, and an inner diameter smaller than the opening 721 extends from the other end of the nut 72 At this time, the cap-shaped soft cover 71 can be placed into the manifold 53, and then the end of the through-hole 722 of the nut 72 is pressed against the cap-shaped soft cover 71 and combined in the manifold 53. At this stage, the cap-shaped The outer ring of one end of the soft cover 71 is against the inner wall of the manifold 53, and the other end of the cap-shaped soft cover 71 is against the end of the through hole 722 of the nut 725. Through a nut 72 and corresponding to the outer end 711 of the cap-shaped soft cover 71, when the touch plate 12 is pressed, the outer end 711 of the cap-shaped soft cover 71 of the air release valve 7 can be touched, so that the cap-shaped soft cover 71 The cover 51 can be compressed and deformed to allow the excess pressure of the inflated object to be released from the manifold 53 equipped with the group 5 of the air release valve 7, as shown in Fig. 5 and Fig. 6 . A regulating valve 8, which is screwed into the manifold 54 and can be rotated to adjust the internal volume of the secondary air chamber 541, the outer peripheral wall of the regulating valve 8 is provided with a concave ring groove 81, and a sealing ring 82 is sleeved on it .

When the piston body 25 of the present invention performs reciprocating linear motion in the inner cavity 34 of the cylinder 3 and is located at the top dead center, the top plane 260 of the piston head 26 is completely against the top wall 31 of the compression chamber 33 of the cylinder 3 (as shown in FIG. 7 ). At this time, most of the compressed air compresses and pushes the valve seat 41 through the air hole 32 provided on the top wall 31 of the cylinder 3 to compress the spring 42, so that the compressed air can flow into the inner chamber 51 of the air storage seat 5, and then pass through Each outlet manifold 52, 53, 55 is connected to objects of different properties and functions. However, part of the compressed air output by the cylinder 3 will enter the secondary air chamber 541 of the manifold 54 through the flow port 35, and the amount of air contained in the secondary air chamber 541 will not only allow the air compressor There will be no phenomenon of exceeding the safe pressure value range, and at the same time, the piston body 25 can operate more smoothly when it starts its downstroke. The aforementioned valve seat 41 can still be resisted by the pressing portion 64 at the bottom end of the cylinder column 62 of the top cover 6 when it is opened, and its action state can be shown in FIG. 7 and FIG. 8 .

Please refer to Figure 6 and Figure 7, if the internal pressure of the inflatable has exceeded the range of the safe pressure value, the user can also perform the pressure relief action through the control of the air release valve 7

In summary, the present invention is provided with a manifold 54 with an auxiliary air chamber 541 outside the cylinder 3, and the auxiliary air chamber 541 communicates with the compression chamber 33 of the cylinder 3 through a flow port 35, and the storage tank extending outside the cylinder 3 The air seat 5 is then communicated with the compression chamber 33 of the cylinder 3 with an air hole 32, but the auxiliary air chamber 541 is not communicated with the inner chamber 51 of the air storage seat 5, so that most of the compressed air passes through the air storage seat 5. The air outlet manifold is output to other functional components and objects to be inflated, and another part of the compressed air enters and stays in the auxiliary air chamber 541. This structural design not only prevents the operation of the piston body 25 from exceeding the safe pressure range Inflating action without additional pressure safety valve, and the action of the downstroke stroke of the piston body 25 is more smooth, which is really progressive.

The above-mentioned embodiments and drawings do not limit the form and style of the product of the present invention, and any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims (2)

1. a kind of blowing plant, an including machine box body, foregoing machine box body is provided with one and presses plate, and one is equiped with inside it Can produce the air compressor of air pressure, the air compressor that piston body is driven in motor operations by power initiation Piston head carries out reciprocating in cylinder, the compressed air in cylinder is pushed the gas storage seat of air inlet compressor Interior, gas storage seat is provided with a plurality of manifolds that can be connected with gas storage seat；

It is characterized in that：A manifold for possessing accessory air-space is provided with the casing outer wall of air compressor, the interior setting one of the manifold can The regulating valve of adjustment type, the regulating valve is screwed together in manifold and can do rotation and adjusts the internal volume of surrounded accessory air-space, secondary Air chamber mutually circulates with cylinder compresses room but is not connected with the gas storage of outlet purposes seat, when the top of the piston head of air compressor is put down Face is butted on cylinder compresses ceiling wall completely, and now Partial shrinkage air enters in accessory air-space, not only allows the undershoot row of piston body The action of journey is more smooth, also allows air compressor to be prevented by need not separately setting pressure safety valve beyond safe pressure value scope Inflation action；A manifold on foregoing gas storage seat is applied to set a gas bleeder valve, shape for hat of the gas bleeder valve comprising a hollow form Soft lid, an external end head is provided with the soft lid one end of shape for hat, and the other end is provided with an external toroidal ring, in external toroidal ring be provided with separately it is a plurality of Projection, forms a circulation groove between separately projection；One nut, its one end has an opening, and the nut another end extends one Open-work of the interior bore less than opening；The soft lid of the shape for hat is placed in a manifold, and is butted on the soft lid of shape for hat by the open-work end of nut and is tied Together in manifold, the external toroidal ring of the soft lid one end of shape for hat is butted on manifold internal wall, and the other end of the soft lid of shape for hat is then butted on the open-work of nut End, presses the push rod on the inside of plate then through a nut and corresponding to the external end head of the soft lid of shape for hat in foregoing machine box body, that is, press tactile Pressing plate can then press the external end head of the soft lid of shape for hat of gas bleeder valve, make the soft lid of shape for hat by compression and allow the surplus of inflated thing Pressure carries out pressure release action by circulation groove, open-work.

2. a kind of blowing plant as claimed in claim 1, it is characterised in that：Foregoing gas storage seat is in bottom and cylinder Roof close to and form a shared midfeather, be provided with a stomata in midfeather, the stomata can allow cylinder inner chamber pressure Contracting room is connected with the interior room of gas storage seat；One valve seat can be placed at the stomata upper end of foregoing midfeather；One rectangular shape Top cover, its upper end is provided with a knob, and down extends a cylindrical column in top cap central section, multiple in being extended with outward in cylindrical column Several bulge loop walls separately, and a plurality of recess annular grooves are then formed between top cover and bulge loop wall, the cylindrical column has one Bottom edge, the pressing part of a convex is more formed toward cylindrical column heart in bottom edge；Several sealing rings can be sheathed on foregoing cylindrical column On annular groove；Foregoing top cover is corresponding to be incorporated on foregoing gas storage seat, is quite firmly engaged by top cover by knob is rotated It is incorporated on gas storage seat；One end of one spring is seated on foregoing valve seat, and the other end is then butted on the bulge loop in the cylindrical column of top cover Wall.