TW201433698A - Air compressor device - Google Patents

Abstract

The present invention discloses an air compressor device, particularly the device capable of maintaining compressed air outputted from an air compressor within a safety pressure range during the operation of an air compressor without requiring a safety pressure valve. An opening is formed at a top end of a piston head of the piston assembly and an air buffer tank inwardly recessed to form the bottom wall and sidewalls. When the piston assembly drives a cylinder of the air compressor to move reciprocally, the air pressure of an inflated object is maintained within a safety range, not only providing safety, but also reducing the manufacturing cost without requiring an additional safety pressure valve. When the piston assembly of the air compressor is moved linearly to a dead point, the piston head of the piston assembly has a buffer space formed at the top wall inside a cylinder.

Description

Air compressor unit

The present invention relates to an air compressor device, and more particularly to a piston body of an air compressor having a buffer air tank that allows compressed air output from a compressor in operation to be maintained within a safe pressure range. The design allows the conventional air compressor to eliminate the need for a pressure relief valve, which reduces manufacturing costs.

According to the air compressor, a device for inflating an article to be inflated is generally widely used for air cushioning and tire inflation. Since the air compressor is small in size, it is easy to be carried, and the portable DC power supply can also be used. Or it can be connected to the cigarette lighter socket of the car to provide the power supply of the air compressor, which is quite simple and convenient in operation and use. In general, the main structure of a conventional air compressor is to drive a piston body to perform a reciprocating compression action in a cylinder by a motor, and the compressed air can be delivered from the cylinder to the air reservoir, and then the air reservoir. The transfer hose connected to the upper manifold is connected to the item to be inflated for the purpose of inflation. The structure of the conventional air compressor is one in which the piston head of the piston body is in a solid state; further, the air compressor device is provided with a pressure safety valve, and the purpose of the design is mainly because of the pressure of the high pressure air generated. If the value exceeds the safety pressure value set by the item to be inflated, the pressure safety valve will automatically release the high-pressure air inside the air-storage chamber out of the machine, and will not enter the object to be inflated again, and maintain the air compressor device. And the safety of the inflated material, but also because of the installation of such a pressure safety valve, the operator increases the manufacturing cost, which is not economical.

The present inventors have in view of the fact that the additional pressure relief valve has a lack of manufacturing cost in the air compressor device, and it is indispensable to consider the protection of the pressure safety valve in the manufacture of the air compressor device. The factor, for this reason, was carefully developed and developed, and finally developed an air compressor device that does not require the use of a pressure safety valve but has the protective effect of adding a pressure safety valve as a conventional product. The reason is:

The main object of the present invention is to provide an air compressor device comprising a casing having an air compressor capable of generating air pressure by starting from a power source, the air compressor The piston head of the piston body has a venting passage therethrough and is provided with a buffering gas tank, so that the air pressure continuously generated by the reciprocating linear motion of the piston body in the cylinder of the air compressor does not exceed the safety pressure value of the inflated article. Therefore, the air compressor does not have to be additionally provided with a protective pressure relief valve.

A secondary object of the present invention is to provide an air compressor device in which a piston body is provided with a reciprocating motion in a cylinder at a top dead center, and a piston head of the piston body is opposite to a cylinder inner wall There is still a buffer space between them.

The specific configuration of the present invention and its efficacy will be described in detail below.

First Fig.: A perspective view of a casing of an air compressor device of the present invention.
Second Figure: is a schematic plan view of another box of the present invention.
Third Figure: A perspective view of an air compressor of the present invention.
Figure 4 is a perspective exploded view of the piston body of the present invention.
Fig. 5 is a perspective sectional view showing the piston body of the present invention.
Fig. 6 is a schematic view showing the suction stroke of the air compressor outside the retracting stroke of the piston body of the present invention.
Figure 7 is a schematic view showing the flow of compressed air during the forward stroke of the piston body of the present invention.
Figure 8 is a schematic view showing another angle of the piston body of the present invention in the forward stroke motion.
Figure 9 is a view showing another embodiment of the present invention.
Figure 10 is a schematic cross-sectional view of another angle of the present invention.
Eleventh drawing: is a perspective exploded view of another piston body of the present invention.
Fig. 12 is a perspective sectional view showing another piston body of the present invention.
Thirteenth Diagram: A schematic diagram of the other piston body of the present invention retreating the air from the outside of the air compressor by the air inlet.
Figure 14 is a schematic view showing the flow of compressed air during the forward stroke of another piston body of the present invention.

In order to further disclose the technical means of the present invention, the present invention will be described in detail by way of specific embodiments.

Please refer to the first, third and sixth figures. The air compressor device of the present invention comprises a casing 1. The casing 1 is internally provided with an air compressor (as shown in the third figure). The compressor has a cylinder 3 for providing operation of the piston body 6 and a plate 20 for providing a motor 21, the plate 20 and a motor mechanism for fixing the air compressor, the power mechanism including a motor 21, A pinion 22 and a large gear 23 for transmission use, and an eccentric pin 24 on the large gear 23 is coupled to a piston body 6. The piston head 61 of the piston body 6 can be reciprocally compressed in the inner circumferential wall 34 of the cylinder 3 by the motor 21 driving the power mechanism of the air compressor, and the compressed air can be moved through the valve seat 44 via the passage 33. The compression spring 46 is actuated to allow compressed air to enter the air reservoir 4. The main structural feature of the present invention is that a piston passage 61 of the piston body 6 is provided with a through-venting passage 604 and a buffering gas tank 60 for reciprocating straight line in the cylinder 3 of the air compressor. The air pressure continuously generated by the movement does not exceed the safe pressure value of the inflated object, so that the air compressor does not need to additionally provide a protective pressure safety valve, which is convenient for the user to inflate the inflated object and protect it. Inflated.

Referring to Figures 4 and 5, the piston body 6 of the air compressor device of the present invention comprises a piston head 61 and a piston rod 62. The piston head 61 is formed at the top end with an opening 601 at one end and toward the inside of the piston head 61. A bottom wall 602 and a buffer wall 60 of the peripheral wall 603 are formed in the recessed portion, and a through hole 604 and a snap seat 605 are disposed on the bottom wall 602 of the buffer air tank 60. The buffer air tank is provided. The top end of the piston head 61 at the periphery of the opening 601 defines a top end wall 611 of a flat surface, and the bottom end wall 611 extends downward to form a bottom end wall 612 of the piston head 61 at the top end wall 611 and the bottom of the piston head 61. A peripheral ring groove 64 is further disposed on the outer peripheral wall between the end walls 612. The ring groove 64 and the buffer gas groove 60 are incompatible. The first end 621 of the piston rod 62 having a length is connected to the bottom end wall 612 of the piston head 61. The rear end of the piston rod 62, that is, the second end 622 is simultaneously provided with a pivot hole 63. An airtight ring 65, which functions like an O-ring, can be mounted within the ring groove 64 of the piston head 61. An elastic spring 66 can be mounted on the snap seat 605 in the buffer tank 60.

For practical use of the air compressor of the present invention, reference may be made to Figures 3 and 6 to 8. The cylinder 3 has a top wall 32 at the top end of the cylinder internal chamber 31. The top wall 32 has a passage 33 through which the reservoir can pass. The gas base 4 is disposed on the gas storage seat 4 and is provided with a plurality of manifolds 41, 42, 43 (the manifold 43 can refer to the tenth figure), the manifold 41 can be connected to a hose 14; the manifold 42 is connected with a pressure display Table 12; the manifold 43 is provided with a vent valve group 5, and a cap type soft cover 51 is provided at the innermost end of the vent valve group 5. The valve seat 44 and the spring 46 above the valve seat 44 are disposed at the passage 33 in the gas storage seat 4. The entire air compressor system can be assembled in the casing 1 , wherein the casing 1 (which can be simultaneously referred to the first figure) is physically provided with a switch 11 as a function of starting or closing the air compressor. The pressure display table 12 of the air compressor can be exposed on the outer surface of the casing 1. The ejector 131 on the inner side of the other touch switch 13 can pass through a bolt 52 and interfere with the cap of the vent valve group 5 on the air compressor. In the state of the soft cover 51, the user can easily press the touch switch 13 to touch the cap type soft cover 51 of the vent valve group 5 in a state where the inflated body apparently exhibits a high pressure value, and the cap type soft cover 51 can be The excess pressure of the inflated material is compressed and released by the manifold 43 provided with the vent valve group 5. The hose 14 connected to the manifold 41 can be housed in the casing 1 and closed by an opening and closing cover 15, as shown in the second figure, to achieve the aesthetics of the collection.

The piston body 6 of the air compressor can perform a reciprocating linear motion in the cylinder 3, and when the piston body 6 is stroked, the air in the cylinder inner chamber 31 can be pushed into the air storage chamber 45 of the air reservoir 4, and then the manifold can be The hose 14 of the 41 is output to the object to be inflated; the downward stroke of the piston body 6 allows the external air to circulate the elastic spring 66 through the venting passage 604 penetrating the piston head 61 and circulates into the cylinder inner chamber 31, so that it is repeated The gas to be inflated can be sufficient. Regarding the operation state of the piston body 6 for performing compressed air in the cylinder inner chamber 31, reference may be made to the sixth and seventh figures. Since the piston head 61 of the present invention is provided with a buffering gas tank 60, when the piston body 6 is stroked to the top dead center, although the top end wall 611 of the piston head 61 is abutted against the top wall 32 of the top end of the cylinder inner chamber 31, Since the presence of the buffer tank 60 allows the compressed air equal to the volume of the tank to be present in the cylinder chamber 31, this design not only allows the piston body 6 to increase the smoothness of the operation due to the reduction of the resistance, but also during the inflation process. At the same time, the inflated material can be kept within a safe pressure range and has safety in use. Of course, the piston body 6 of the present invention can also be applied to a cylinder 3, which can be referred to the ninth diagram. When the piston body 6 of the air compressor is linearly moved in the cylinder 3 at the top dead center, the piston head 61 of the piston body 6 A buffer space 31 is provided between the inner top wall 32 of the cylinder 3, so that the piston body 6 applied to the cylinder 3 can achieve the smooth operation.

The piston body 7 of the present invention may also be an embodiment as shown in the eleventh to twelfth drawings. The piston body 7 includes a piston head 71 and a piston rod 72, and a top end of the flat surface is formed at the top end of the piston head 71. The wall 711 is provided with a through hole 702, a snap seat 713 and an opening 701 at one end and recessed toward the inside of the piston head 71 to form a buffer air tank 70 which is not in communication with the air passage 702. The top end wall 711 extends downward to form a bottom end wall 712 of the piston head 71. A peripheral ring groove 74 is further disposed on the outer peripheral wall between the top end wall 711 and the bottom end wall 712 of the piston head 71. The ring groove 74 is further provided. It is also out of communication with the buffer tank 70. The bottom end wall 712 of the piston head 71 is coupled to a first end 721 of a piston rod 72 having a length. The rear end of the piston rod 72, that is, the second end 722 is simultaneously provided with a pivot hole 73. An airtight ring 75, which functions like an O-ring, can be mounted within the ring groove 74 of the piston head 71. An elastic spring 76 is a snap seat 713 that can be mounted on the top end wall 711. Regarding the operation state of the piston body 7 for performing compressed air in the cylinder inner chamber 31, reference can be made to the thirteenth and fourteenth drawings. Since the piston head 71 of the present invention is also provided with a buffer air tank 70, when the piston body 7 is stroked to the top dead center, although the top end wall 711 of the piston head 71 abuts against the top wall 32 of the top end of the cylinder inner chamber 31, Since the presence of the buffer tank 70 allows the compressed air equal to the volume of the tank to be present in the cylinder chamber 31, this design not only allows the piston body 7 to increase the smoothness of the operation due to the reduction of the resistance, but also during the inflation process. At the same time, the inflated material can be kept within a safe pressure range, which is safe to use, and can also save the cost of attaching the pressure safety valve.

In view of the foregoing, the piston body 6 of the present invention is provided with a buffering gas tank 60 on the piston head 61 so that the entire air compressor does not have to be additionally provided with a pressure safety valve, which not only reduces the manufacturing cost but also has economic benefits, so that the piston The body 6 is more smooth and safe in the operation process, and the present invention is novel and progressive.

(1). . . Box

(11). . . Toggle switch

(12). . . Pressure display

(13). . . Touch switch

(131). . . Pole

(14). . . hose

(15). . . Opening and closing cover

(20). . . Machine board

(twenty one). . . motor

(twenty two). . . gear

(twenty three). . . big gear

(twenty four). . . Eccentric pin

(3). . . cylinder

(31). . . Cylinder room

(32). . . Top wall

(33). . . aisle

(34). . . Inner circumferential wall

(4). . . Gas storage seat

(41)(42)(43). . . Manifold

(44). . . Valve seat

(45). . . Gas storage room

(46). . . spring

(5). . . Vent valve group

(51). . . Cap type soft cover

(52). . . bolt

(5). . . Vent valve group

(51). . . Cap type soft cover

(52). . . bolt

(6). . . Piston body

(60). . . Buffered gas tank

(601). . . Opening

(602). . . Bottom wall

(603). . . Zhou wall

(604). . . Vent tunnel

(605). . . Snap seat

(61). . . Piston head

(611). . . Top wall

(612). . . Bottom wall

(62). . . Piston rod

(621). . . First end

(622). . . Second end

(63). . . Pivot hole

(64). . . Ring groove

(65). . . Airtight ring

(66). . . Reed

(7). . . Piston body

(70). . . Buffered gas tank

(701). . . Opening

(702). . . Vent tunnel

(71). . . Piston head

(711). . . Top wall

(712). . . Bottom wall

(713). . . Snap seat

(72). . . Piston rod

(721). . . First end

(73). . . Pivot hole

(74). . . Ring groove

(75). . . Airtight ring

(76). . . Reed

(12). . . Pressure display

(14). . . hose

(20). . . Machine board

(twenty one). . . motor

(twenty three). . . big gear

(twenty four). . . Eccentric pin

(3). . . cylinder

(4). . . Gas storage seat

(41)(42)(43). . . Manifold

(52). . . bolt

Claims (7)

An air compressor device comprising:
a box body having an air compressor mounted therein, the air compressor having a piston body that can be driven by a motor and reciprocated up and down in the cylinder, wherein the piston head of the piston body is provided with a through hole The venting channel also has a buffering gas tank. The air compressor device according to claim 1, wherein the piston system comprises a piston head and a piston rod, and the piston head is formed at the top end with an opening at one end and recessed toward the inside of the piston head to form a bottom wall And a buffering gas tank of the peripheral wall, a venting channel and a snap seat connected to the buffering gas tank are arranged on the bottom wall; and an elastic spring is attached to the card in the buffering gas tank. Buckle up. The air compressor device according to claim 1, wherein the buffer gas tank has a top end wall of a flat surface at a periphery of the opening of the buffer head, and the piston head is extended downward from the top end wall. The bottom end wall is further provided with a concave ring groove on the outer peripheral wall between the top end wall and the bottom end wall of the piston head, the ring groove is not in communication with the buffering gas tank; the bottom end of the piston head The wall is connected to a first end of the piston rod having a length, and the tail end of the piston rod, that is, the second end is simultaneously provided with a pivot hole; an airtight ring, which functions like an O-ring, can be loaded It is disposed in the ring groove of the aforementioned piston head. The air compressor device according to claim 1, wherein the piston system includes a piston head and a piston rod, and a top end wall of the flat surface is formed at the top end of the piston head, and a through piston is disposed on the top end wall. a venting channel of the head; the bottom wall is recessed toward the interior of the piston head and defines a buffering gas tank that is not in communication with the venting channel; a snap seat is also disposed on the top end wall, and a resilient spring is mounted on the top end The elastic spring can close the vent hole on the buckle seat on the wall. The air compressor device according to claim 1, wherein the cylinder has a top wall at a top end of the cylinder inner chamber, the top wall having a passage through the gas storage seat above the cylinder, at the gas storage seat There are a plurality of manifolds on the manifold, the manifold can be connected to a hose; the manifold is connected to a pressure display table; the manifold is provided with a vent valve group, and a cap type soft cover is arranged at the innermost end of the vent valve group; A valve seat and a spring above the valve seat are disposed in the passage in the gas storage seat. The air compressor device according to claim 1, wherein the switch body is provided with a switch to activate or deactivate the air compressor, and the pressure display of the air compressor can be displayed in the box. On the outer surface of the body, the ejector rod on the inner side of the other touch switch can pass through a bolt and against the cap-type soft cover of the venting valve group on the air compressor, in the state that the inflated body apparently exhibits a higher pressure value. The user can easily press the touch switch to touch the cap soft cover of the deflation valve group, the cap type soft cover can be compressed and deformed, and the excess pressure of the inflated body is released from the manifold provided with the venting valve group. The hose connected to the manifold can be housed in the casing and closed by an opening and closing cover. The air compressor device according to claim 1, wherein when the piston body that performs the reciprocating motion in the cylinder is at the top dead center, the piston head of the piston body is buffered with respect to the inner wall of the cylinder. space.