TWM605290U - Air compressor with pressure gauge - Google Patents

Abstract

This creation is to provide an air compressor with a pressure gauge, in particular to an air compressor that can be movably combined with a pressure gauge and the pressure gauge can generate a piston-like motion for pressure display. The pressure gauge is also provided with a pressure gauge. The pressure protection unit can be measured by the installed pressure gauge to measure the current pressure value change, and when the pressure value reaches the maximum value of the set safe pressure, the overpressure protection unit will release the excess pressure to allow the air compressor There is no need to install additional safety valves to achieve safety benefits, and will not cause overpressure damage to inflatable items.

Description

Air compressor with pressure gauge

This creation is to provide an air compressor with a pressure gauge, in particular to an air compressor that can be movably combined with a pressure gauge and the pressure gauge can generate a piston-like motion for pressure display. The pressure gauge is also provided with a pressure gauge. The pressure protection unit can be measured by the installed pressure gauge to measure the current pressure value change, and when the pressure value reaches the maximum value of the set safe pressure, the overpressure protection unit will release the excess pressure to allow the air compressor There is no need to install additional safety valves to achieve safety benefits, and will not cause overpressure damage to inflatable items.

Early air compressors, especially small air compressors used in the inflation of automobile tires, air cushions, etc., were equipped with only two ducts and one duct on the air storage seat. The tube is used to install a round box-shaped pressure indicator, and the other manifold is used to connect a hose with an air nozzle at one end, which is connected to the object to be inflated, such as a car tire, operated by an air compressor The generated compressed air is delivered to the objects to be inflated to achieve the purpose of inflating, and the pressure indicator can provide the user with the current pressure value visually, as a basis for the safety of controlling the inflation action; this conventional round box shape The pressure indicator is a mechanical pointer pressure gauge made using the principle of Burden Tube. Because this type of Burden Tube pressure indicator requires more precision components, it uses precision The components are also prone to damage, resulting in loss of accuracy during measurement; therefore, the use of the Baden tube pressure indicator is not effective. In order to overcome the lack of use of the Baden tube pressure indicator, a utility model of the pressure indicator device for an inflator is currently disclosed in the Japanese Patent Gazette. The Japanese Utility Model Registration No. 3185073 (U3185073), the pressure indicator device of this creation It has a hollow tube body with a sheath and an air inlet connector at both ends of the tube body. The tube body is provided with a flat plate body and a spring that can move linearly in the tube body. There is a ruler. The most characteristic feature of the tube is a pressure relief hole. When the push block receives the compressed air from the inflator, the flat plate can compress the spring and move linearly. When the inflation pressure exceeds the maximum When the pressure is set, the pressure relief hole provided in the hollow tube body will release the excess pressure to protect the inflation safety of the inflated object; this known public creation has a breakthrough in the structural design, although it has broken through the conventional Baden tube type Pressure indicator, but because the area of the pressure relief hole used as an overpressure safety protection is too narrow, it is a point-shaped round hole. Since the inflation speed of the inflator is quite fast, the pressure relief hole instantly vents The performance of the pressure is not good. On the other hand, the pressure relief hole is easily blocked by the circulating dirt and dust and the dust mixed with the lubricating oil used to increase the smooth operation of the inflator body, which may reduce or lose the pressure relief. On the other hand, it is worth noting that one end of the strip-shaped flat plate is movably connected to the groove of the push block sleeve, and the other end passes through the perforation in the center of the sheath. When the push block and the spring are shared Under the influence of the high-frequency vibration of the inflator, the end of the plane plate connected to the push block is more likely to loosen and deviate. This will cause the other end of the plane plate to form a skewed displacement movement. The moving path will increase the friction between the four perimeters of the plate and the perforation, which is easy to wear and expand the perforation area, and the perforation that is worn and enlarged will cause The shaking and vibration of the flat panel body can cause the flat panel and the push block to loosen or completely fall off. This will cause obstacles or loss of accuracy in the pressure measurement; on the other hand, the straight line of the panel The length of the displacement plus the structural length of the ruler will also increase the length obstacle of the entire display device in the space design, which is also a point to be considered for improvement. The author felt that the conventional pressure gauge still has lack of use, and is actively developing and improving it. Now he has developed an air compressor with a pressure gauge, especially an air compressor that can be combined with a pressure gauge. And the pressure gauge can produce pressure display in a manner similar to the movement of a piston. The pressure gauge is also equipped with an overpressure protection unit, which can be measured by the installed pressure gauge to measure the current pressure value change, and the pressure is displayed in the pressure gauge. When the propeller moves to the maximum limit point, the overpressure protection unit releases the excess pressure, so that the air compressor can achieve safety benefits without additional safety valves, and will not cause overpressure damage to the inflatable items.

The main purpose of this creation is to provide an air compressor with a pressure gauge. The manifold set on the air compressor of the air compressor can be directly connected to a pressure gauge with an overpressure protection unit. Measure the current pressure value change, and when the pressure value reaches the maximum value of the set safe pressure, the pressure gauge will release the excess pressure through the overpressure protection unit, without the need for another outlet manifold on the air compressor Install pressure relief valve.

The secondary purpose of this creation is to provide an air compressor with a pressure gauge. The gas delivery manifold set on the air compressor seat can be directly connected to a pressure gauge with an overpressure protection unit. When the displacement of the thruster of the pressure gauge travels to the maximum limit point, the exhaust valve provided on the exhaust passage at the end of the thruster to close the exhaust passage will be opened by the cross pin at the front end of the cover to make the pressure gauge The high-pressure air inside will enter the propeller through the exhaust channel, and then release the excess pressure through the output air passage set by the cover. Not only does it need to install a pressure safety valve on the other air delivery manifold of the air compressor In addition, it can also protect the safety of the inflated object.

In order for the examiner to understand the specific structure of this creation in more detail, please refer to the first figure. This creation provides an air compressor 9 with a pressure gauge 10, wherein the pressure gauge 10 includes a hollow cylindrical body 1 , The hollow round tube body 1 is a transparent cylindrical shape and has an inner chamber 11, one end is an open end 12 and is provided with a male thread 121, and the other end is a tail end 13 with a pair of clamping bodies 131, the outer center of the tail end 13 There is also a connecting head 14, which has an inner channel 140 communicating with the inner chamber 11 of the circular tube body 1, and two separated airtight O-rings 15 and 16 are installed on the connecting head 14. The tube body 1 is provided on the outer side of the tube body 1 close to the tail end 13 with a display unit 17 combined with digitally depicting the pressure value. The inner surface of the display unit 17 is combined with the circular tube body 1 in a separate manner to form a pressure gauge 10.

A propeller 2 can be placed in the aforementioned circular tube body 1. When the compressed air generated by the air compressor 9 enters the aforementioned circular tube body 1, in addition to pushing the propeller 2 for linear displacement, it also The current pressure value is indicated by the moving length of the propeller 2, as shown in the fifth figure. Please refer to the third and fourth figures. In the present creative embodiment of the propeller 2, the propeller 2 has an open end 21 at one end, and the other end of the propeller 2 is a bottom end seat 22 outside of the bottom end seat 22 The plane is provided with a recessed groove 221, and the thruster 2 has an inner hollow portion 23. The bottom end seat 22 extends at the center of the bottom of the inner hollow portion 23 and a hollow tube 24 extending through the open end 21 , And inside the hollow tube 24 of the bottom end seat 22 is provided a protrusion 25 with an exhaust passage 250, that is, the groove 221 outside the bottom end seat 22, the exhaust passage 250 and the hollow tube 24 are in a connected state , And a ring recess 26 is formed between the bottom of the hollow tube 24 and the cylinder wall of the pusher 2; a ring recess 27 is provided on the peripheral side of the aforementioned bottom end seat 22, and a colored O-ring 28 can be sleeved in it. An overpressure protection unit, which in this creative embodiment is an exhaust valve 3, is provided with an outer end 31, and a vertical rod 32 extends from the other end of the outer end 31, the The end of the vertical rod 32 is provided with two opposite side wings 33; a leak-proof spring 34, which can be placed in the hollow tube 24 of the thruster 2, and one end of the leak-proof spring 34 is attached to the convex wall 25; The side wing 33 end of the air valve 3 is inserted into the exhaust passage 250 and the anti-leak spring 34 from the groove 221 outside the bottom end seat 22 of the propeller 2, and the side wing 33 of the exhaust valve 3 is hooked to the anti-leak spring 34 The other end, and the outer end 31 of the exhaust valve 3 is seated in the groove 221 outside the bottom seat 22 of the propeller 2. At this time, the anti-leak spring 34 is sleeved on the vertical rod of the exhaust valve 3 32. One end abuts against the projection 25 of the propeller 2, and the other end abuts against the side wing 33 of the exhaust valve 3. The elastic tension of the anti-leak spring 34 allows the exhaust valve 3 to initially position as the exhaust valve 3. The outer end 31 closely abuts the groove 221 outside the bottom end seat 22 of the thruster 2, and the outer end 31 of the exhaust valve 3 can close the exhaust passage 250 of the thruster 2, as shown in the seventh and Shown in nine pictures.

The aforementioned propeller 2 combined with the exhaust valve 3 can be accommodated in the aforementioned circular tube body 1 and the bottom end seat 22 abuts against the bottom of the inner chamber 11, and the inner passage 140 of the connector 14 and the inner chamber 11 of the circular tube body 1 can be Communicate with each other so that the input pressure of the pressure source can be applied to the outer end 31 of the thruster 2 and the exhaust valve 3 through the inner passage 140 and the inner chamber 11 of the circular tube body 1, the thruster 2 and the thruster 2 The combined exhaust valve 3 can move in the inner chamber 11 of the circular tube body 1.

An elastic element, such as a spring. This creation uses a main spring 4, which can be accommodated in the inner hollow portion 23 of the aforementioned propeller 2 and is sheathed around the periphery of the hollow tube 24. One end of the main spring 4 is just right Abut the ring recess 26.

A cover body 5 is provided with a female thread 50 on its inner peripheral surface, a center seat 51 is provided at the center of the inner surface side of the cover body 5, and a ring receiving groove 53 is formed between the center seat 51 and the inner side wall of the cover body 5. A cross top pin 52 extends from the top end of the cross top pin 52. The cross top pin 52 is a non-circular cylinder. The outer circumference of the cross top pin 52 has a circulation groove 520 recessed inward. The diameter is smaller than the outer diameter of the central base 51. An outer wall 511 is arranged at the joint between the cross pin 52 and the central base 51, and the joint between the outer wall 511 and the central base 51 forms a top wall 512, the outer surface of the cover 5 is provided with a plurality of output air passages 54 arranged in a ring shape. As shown in the sixth figure, the output air passages 54 are in communication with the ring receiving groove 53 of the cover 5, allowing the gas pressure to be changed from It flows out from here, as shown in Figures 7 and 8. When the cover body 5 is screwed to the male thread 121 of the open end 12 of the circular tube body 1 with its female thread 50, the two can be screwed and positioned. The depth of the screw connection between the circular tube body 1 and the cover body 5 The state can be used to adjust the pressure value of the pressure gauge 10. The other end of the aforementioned main spring 4 is attached to the top platform 512 of the cover 5, and the inner diameter edge of the main spring 4 slightly abuts the expansion 511 outside the cover 5 Outer wall. After the round pipe body 1, the propeller combined with the exhaust valve 3, the colored O-ring 28, the airtight O-rings 15, 16, the main spring 4 and the cover 5 are completely combined, the second and Three pressure gauges 10 shown in the embodiment.

Please refer to Figures 1 and 8. The external pressure source can enter the tube body 1 of the pressure gauge 10 through the inner channel 140 of the connector 14 of the tube body 1, and the input external pressure can force the thruster 2 to force the internal The main spring 4, the continuous input of external pressure can push the pusher 2 combined with the exhaust valve 3 to the direction of the cover 5. The current pressure value can be viewed by the transparent tube 1 The number on the display unit 17 where the clear color O-ring 28 is positioned depicts the pressure value, as shown in the fifth figure. When the external pressure source disappears, the outside air can enter the circular tube body 1 through the output air passage 54 of the cover body 5. The restoring force of the main spring 4 can make the thruster 2 return to its original initial position, which is as shown in Figure 7. The initial state shown. For safety protection purposes, when the displacement of the thruster 2 of the pressure gauge 10 reaches the maximum limit point, the exhaust valve 3 provided on the exhaust passage 250 at the end of the thruster 2 to close the exhaust passage 250 will be covered The cross pin 52 at the front end of the body 5 is moved and opened, so that the high-pressure air in the pressure gauge 10 will enter the contents of the circular tube body 1 through the groove 221, the exhaust channel 250, the hollow tube 24, and the circulation groove 520 of the cross pin 52 The chamber 11 and the ring receiving groove 53 of the cover 5 release the excess pressure through the output air passage 54 provided in the cover 5. On the other hand, when an overpressure occurs due to improper operation during the inflation stage, the end of the hollow tube 24 of the thruster 2 can be used to abut the expansion wall 511 outside the cover 5. This design method can protect the main spring 4. The main spring 4 will not be deformed due to excessive pressure, as shown in the eighth figure.

Please refer to the tenth and eleventh figures, the inner surface of the display unit 17 with numerically depicted pressure value is integrally formed with the circular tube body 1 to form a pressure gauge 10.

In summary, this creation provides an air compressor 9 with a pressure gauge 10, and the air delivery manifold set on the air storage seat of the air compressor 9 can be directly connected to a pressure gauge with an overpressure protection unit. 10. When the displacement of the thruster 2 of the pressure gauge 10 reaches the maximum limit point, the exhaust valve 3 provided on the exhaust passage 250 at the end of the thruster 2 to close the exhaust passage 250 will be covered by the front end of the cover 5 The cross pin 52 is moved and opened, so that the high-pressure air in the pressure gauge 10 will enter the propeller 2 through the exhaust channel 250, and then release the excess pressure through the output air channel 54 provided in the cover 5. The other gas delivery manifold of the compressor 9 is equipped with a pressure safety valve, which can also protect the safety of the inflated material. Not only is the structure design different from the existing conventional products, but also the pressure value can be measured accurately and sensitively. Practicability, while using the overpressure protection unit as an inflation operation to prevent overpressure, it has a safety effect. This creation is obviously novel and progressive. It is a patent application.

10: Pressure gauge 1: Round tube body 11: content room 12: open end 121: male thread 13: tail end 131: Inlay 14: Connector 140: inner channel 15: Airtight O-ring 16: Airtight O-ring 17: display unit 2: thruster 21: open end 22: bottom end seat 221: Groove 23: Internal space 24: hollow tube 25: Protruding Wall 250: exhaust channel 26: Ring cavity 27: ring groove 28: Colored O-ring 3: exhaust valve 31: Outer end 32: Vertical pole 33: Flanking 34: anti-leak spring 4: main spring 5: cover 50: Female thread 51: Center Block 511: Outer Expansion 512: Top Taiyuan 52: Cross top pin 520: circulation slot 53: ring groove 54: output airway 9: Air compressor

The first picture: is a three-dimensional view of this creative pressure gauge assembled in an air compressor. The second picture: is a three-dimensional view of this creative pressure gauge. The third picture: is an exploded view of this creative pressure gauge. The fourth picture: is a three-dimensional cross-sectional view of the propeller of this creative pressure gauge. Figure 5: The top view of this creative pressure gauge. Figure 6: The back view of the pressure gauge of this author. Figure 7: It is a schematic plan view of this creative pressure gauge in the zero pressure starting state. Figure 8: It is a schematic diagram of the deflation action when the pressure gauge of this creation receives a pressure source, and the thruster performs a piston-like motion and moves to the maximum limit point. Figure ninth: is a cutaway plan view of the combination of the exhaust valve and the propeller of this creation. The tenth picture: is another embodiment diagram of this creative pressure gauge. Figure 11: The side view of Figure 10.

10: Pressure gauge

1: Round tube body

12: open end

121: male thread

13: tail end

131: Inlay

14: Connector

140: inner channel

15: Airtight O-ring

16: Airtight O-ring

17: display unit

2: thruster

21: open end

22: bottom end seat

221: Groove

24: hollow tube

25: Protruding Wall

250: exhaust channel

27: ring groove

28: Colored O-ring

3: exhaust valve

31: Outer end

32: Vertical pole

33: Flanking

34: anti-leak spring

4: main spring

5: cover

50: Female thread

52: Cross top pin

520: circulation slot

Claims (7)

An air compressor with a pressure gauge, wherein the pressure gauge includes: a hollow round tube body, the hollow round tube body is a transparent cylinder with an inner chamber, and a connection is provided at the center of the outer side of the end of the tube body The connecting head has an inner channel communicating with the inner chamber of the circular tube body. The circular tube body is provided with a display unit combined with a digitally depicted pressure value on the outer side near the tail end; a thruster provided with an overpressure protection unit, It can be placed in the aforementioned round tube body. When the compressed air generated by the air compressor enters the aforementioned round tube body, it can not only push the thruster equipped with the overpressure protection unit for linear displacement, but also by The moving length of the thruster indicates the current pressure value. One end of the thruster is an open end, and the other end of the thruster is a bottom end seat. The thruster has an inner hollow part, and the bottom end seat is inside. At the center of the bottom of the part, a hollow tube extends through the open end, and inside the hollow tube of the bottom end seat is provided with a convex wall with an exhaust passage; a leak-proof spring can be placed in the thruster Inside the hollow tube, one end of the anti-leak spring is against the convex wall, and the other end is against the overpressure protection unit; an elastic element which can be accommodated in the hollow part of the aforementioned thruster and is sheathed around the hollow The periphery of the tube; a cover, a center seat is provided at the center of the inner surface of the cover, and a cross pin is extended from the top of the center seat. The cross pin is a non-circular cylinder, and the outer surface of the cover is provided with a center seat A plurality of output air passages arranged in a ring shape, the other end of the aforementioned elastic element is attached to the cover; by the above-mentioned structure, the compressed air generated by the air compressor can enter the circular tube body through the inner passage of the connector. When the thruster provided with the overpressure protection unit moves to the maximum limit point, the overpressure protection unit provided on the exhaust passage at the end of the thruster to close the exhaust passage will be moved by the cross pin at the front end of the cover. Turn on, so that the high-pressure air in the pressure gauge will enter the inner chamber of the circular tube body through the exhaust channel and the hollow tube, and then discharge the excess pressure through the output air passage set in the cover body. The air compressor with a pressure gauge as described in item 1 of the scope of patent application, wherein one end of the round pipe body is an open end and is provided with a male thread, and the other end is the aforementioned tail end and is provided with a pair of clamping bodies, which are connected to Two separated airtight O-rings are installed on the head. The air compressor with a pressure gauge as described in item 2 of the scope of patent application, wherein the propeller is provided with a recessed groove on the outer plane of the bottom end seat, the groove on the outside of the bottom end seat, and the exhaust channel The hollow tube is in communication with the hollow tube, and a ring cavity is formed between the bottom of the hollow tube of the thruster and the cylinder wall of the thruster. A ring recess is provided on the peripheral side of the bottom end seat, and a colored O-ring can be sleeved in it. . As described in item 3 of the scope of patent application, the air compressor with a pressure gauge, wherein the overpressure protection unit is an exhaust valve, which is provided with an outer end, and the other end of the outer end extends Vertical rod, the end of the vertical rod is provided with two opposite side wings; the side wing end of the aforementioned exhaust valve is penetrated into the exhaust channel and the anti-leak spring from the groove outside the bottom end seat of the propeller, and the exhaust valve The side wing is hooked to the other end of the anti-leak spring, and the outer end of the exhaust valve is seated in the groove outside the bottom end seat of the propeller. At this time, the anti-leak spring is sleeved on the vertical of the exhaust valve. The rod has one end against the protruding wall of the thruster, and the other end against the side wing of the exhaust valve. With the elastic tension of the anti-leak spring, the initial position of the exhaust valve is close to the ground outside the exhaust valve. The outer end of the exhaust valve can close the exhaust channel of the thruster by resisting the groove on the outside of the bottom end seat of the thruster. As described in item 3 of the scope of patent application, the air compressor with a pressure gauge, wherein the aforementioned elastic element is a main spring, and one end of the main spring can abut against the ring cavity of the propeller. As described in item 5 of the scope of patent application, the air compressor with a pressure gauge, wherein the inner circumference of the cover body is provided with female threads, and a ring groove is formed between the center seat of the cover body and the side wall of the cover body. The outer peripheral surface of the ejector pin has an inwardly depressed circulation groove. The outermost diameter of the cross ejector pin is smaller than the outer diameter of the center seat. An outer wall is provided at the junction between the cross ejector pin and the center seat. The connection between the outer expansion wall and the center seat forms a top platform. The aforementioned output air channel is in communication with the ring groove of the cover, allowing gas pressure to flow from here to the outside; when the cover is screwed with its female thread The male thread fitted to the open end of the round tube body enables the two to be screwed and positioned. The depth of the threaded connection between the round tube body and the cover can be used to adjust the pressure value of the pressure gauge. The other end of the main spring It is attached to the top platform of the cover body, and the inner diameter edge of the main spring slightly abuts the outer wall of the cover body. The air compressor with a pressure gauge as described in item 1 of the scope of the patent application, wherein the inner side of the display unit with the numerically depicted pressure value is combined with the circular tube body separately or integrally to form a pressure gauge.

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