TWI675977B - Pressure relief adaptor - Google Patents

Abstract

A pressure relief joint includes a body, a connection group, a trigger lever and a control group. The body has a first accommodation hole, a second accommodation hole communicating with the first accommodation hole, and a connection portion communicating with the second accommodation hole, and the connection portion can be connected to the air pump. The connection group is disposed at the first receiving hole and is suitable for connecting the object to be aerated. The lever is pivotably connected to the second receiving hole and can abut the connection group. The lever has an assembly hole that communicates with the second receiving hole. The control group is disposed in the assembly hole and includes a port and a control member. The port communicates the assembly hole with the outside world. The control member is movably disposed at the port and selectively closes the port, so that the assembly hole selectively communicates with the outside world through the port.

Description

Pressure relief joint

The present invention relates to a pressure relief joint, in particular to a pressure relief joint that can be used in combination with an air pump or a tire pressure gauge.

Generally, the inflator is not provided with a mechanism for releasing pressure on the aerated object. Therefore, once the inflator is accidentally inflated to an excessively high pressure, the air nozzle of the inflator connected to the inflator must be removed first, and the core of the inflator's nozzle must be pressed to expel excessive air in the inflator. However, if too much air is accidentally released and the pressure is too low, the air nozzle must be connected to the air nozzle of the inflatable object and the air pumping action needs to be performed again, resulting in a complicated and inconvenient inflating process.

In order to solve the problem of pressure relief during the inflation process, for example, the tire pressure detection and inflating device provided by the Republic of China Publication No. M570423 patent includes a main joint having first, second and third screw holes which are mutually conductive. The connecting part is assembled through the first through hole, the pressure relief joint is assembled through the second through hole and locked to the connecting part, and the third screw hole is connected with the American or French gas nozzle joint. The reversing dual-use nozzle connector is locked to the connecting member and one of them must be selected for connecting the tire valve. However, in the aforementioned patent cases, the American or French nozzle joint, pressure relief button and reversing dual-purpose nozzle joint are obviously protruded from the main joint, failing to have a simple appearance, which affects the convenience of operation during inflation and pressure relief. Sex.

The invention provides a pressure relief joint, which can be used in combination with an air pump or a tire pressure gauge.

The pressure relief joint provided by the invention comprises a body, a connection group, a trigger lever and a control group. The body has a first accommodation hole, a second accommodation hole communicating with the first accommodation hole, and a connection portion communicating with the second accommodation hole, and the connection portion is suitable for connecting the air pump. The connection group is disposed at the first receiving hole and is suitable for connecting the object to be aerated. The lever is pivotally connected to the second receiving hole and can abut the connection group. The lever includes an assembly hole communicating with the second receiving hole. The control group is arranged in the assembly hole and has a port and a control member. The port communicates with the assembly hole and the outside world. The control member is movably disposed in the port and selectively closes the port, so that the assembly hole is selectively communicated through the port. external.

In an embodiment of the present invention, the connecting portion is connected to a cylinder of a portable pump.

In another embodiment of the present invention, the connecting portion is connected to a hose of a floor-standing pump.

In still another embodiment of the present invention, the body has an accommodating portion communicating with the first accommodating hole, and a tire pressure gauge is disposed in the accommodating portion.

According to an embodiment of the present invention, the trigger lever has a step portion formed on an inner peripheral surface of the assembly hole. The control member has a first end, a second end opposite to the first end, and a pressing portion provided on the first end. The control group includes an elastic member, and opposite ends of the elastic member elastically abut against the class portion and the second end, respectively.

In an embodiment of the present invention, the control group includes a cover member connected to the assembly hole, and the through hole is formed on the cover member and penetrates the opposite sides of the cover member. The control member has a leak-proof ring, which is arranged on the outer periphery of the control member and selectively abuts the cover member to close or open the opening.

In an embodiment of the present invention, an internal thread portion is provided on an inner peripheral surface of the assembly hole, and an external thread portion is detachably connected to the internal thread portion on an outer peripheral surface of the cover member.

In one embodiment of the present invention, the trigger lever has a ring groove. The two pin pieces pass through the body and partially enter the second receiving hole, and the part of the two pin pieces entering the second receiving hole is latched to the ring groove, so that the lever is pivotably connected to the second receiving hole.

In an embodiment of the invention, the first receiving hole is formed in the body along the first axis. The second receiving hole is formed in the body along a second axis perpendicular to the first axis. The connection group includes a top core tube movably disposed along the first axis and communicating with the first volume, a plug member abutting the top core tube and deformable, and a hole cover connected to the body. The plug member and the hole cover are suitable for insertion of a gas nozzle to be inflated. The trigger lever has an eccentric portion that deviates from the second axis, and the eccentric portion correspondingly pivots the trigger lever relative to the second receiving hole to selectively press against the top core tube, causing the plug member to be deformed by the top core tube to deform and clamp the object to be inflated. Gas nozzle.

In an embodiment of the present invention, the connection group includes a biasing member disposed in the top core tube, the biasing member is adapted to bias the gas nozzle of the object to be inflated, so that the object to be inflated communicates with the top core tube.

Based on the above, the pressure relief joint provided by the above embodiments of the present invention has a control group provided in the assembly hole of the trigger lever, so that the pressure relief joint has a simple appearance, so as to improve the convenience of operation during inflation and pressure relief, and The connection part can be connected with various types of air pumping devices, such as a portable air pump or a floor-type air pump, which greatly increases the versatility of the pressure relief joint. In addition, the pressure relief joint can also be provided with a tire pressure gauge separately to be used as a device for measuring tire pressure.

In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of an appearance of a pressure relief joint according to an embodiment of the present invention. FIG. 2 is an exploded view of the pressure relief joint shown in FIG. 1. 3 and 4 are schematic sectional views of the pressure relief joint shown in FIG. 1. 5 and 6 are schematic diagrams of using the pressure relief joint shown in FIG. 1. 1 to 6, the pressure relief joint 1 of this embodiment includes a body 10, a connection group 20 provided on the body 10, a trigger lever 30 pivotably connected to the body 10, and a trigger lever 30 of control group 40.

The body 10 has a first receiving hole 11, a second receiving hole 12 communicating with the first receiving hole 11, and a connecting portion 13 communicating with the second receiving hole 12. The first accommodation hole 11 can be formed in the body 10 along a first axis A11, and the second accommodation hole 12 can be formed in the body 10 along a second axis A12 perpendicular to the first axis A11. In this embodiment, the connecting portion 13 can be provided with an internal thread and can be engaged with the external thread provided by the cylinder 201 of the portable pump 2 to use the pressure relief joint 1 and the portable pump 2 in combination.

The connection group 20 is disposed in the first receiving hole 11 and is adapted to be connected to a gas nozzle 5 to be inflated. The gas nozzle 5 can be an American gas nozzle or a French gas nozzle. The connection group 20 includes a top core tube 21 movably disposed along the first axis A11 and communicating with the first volume hole 11, a plug member 22 abutting the top core tube 21 and being deformable, a The hole cover 23 is connected to the body 10 and a biasing member 24 is disposed in the top core tube 21. The plug member 22 can be made of a soft material, and the plug member 22 and the hole cover 23 are adapted to be inserted into the air nozzle 5 of the object to be inflated. The biasing member 24 is adapted to bias the air nozzle 5 of the object to be inflated, so that the air nozzle 5 is in an open state, so that the object to be inflated communicates with the core tube 21. Further, the biasing member 24 can be a spring and elastically abut the air nozzle 5.

The trigger lever 30 is pivotably connected to the second receiving hole 12 and can abut the top core tube 21 of the connection group 20. The trigger lever 30 has an assembly hole 31 communicating with the second accommodation hole 12, a step portion 32 formed on an inner peripheral surface of the assembly hole 31, an eccentric portion 33 offset from the second axis A12, and an annular groove 34. The assembling hole 31 can be formed on the lever 30 along the second axis A12, and an inner thread portion 311 is provided on the inner peripheral surface of the assembling hole 31. The two pin members 35 pass through the body 10 and partially enter the second receiving hole 12, and the part of the two pin members 35 entering the second receiving hole 12 is engaged with the ring groove 34, so that the lever 30 can be used as the axis of the second axis A12. It is pivotally connected to the second receiving hole 12 and cannot be disengaged. The eccentric portion 33 extends in a direction parallel to the second axis A12, and correspondingly pivots the lever 30 relative to the second receiving hole 12 to selectively press the top core tube 21, so that the plug member 22 is deformed by the top core tube 21 to deform. Clamp the gas nozzle 5 to be inflated.

The control group 40 is disposed in the assembly hole 31 and includes a cover member 41 connected to the assembly hole 31, a control member 42 movably passed through the cover member 41, and an elasticity provided between the step portion 32 and the control member 42. Piece 43. The cover 41 has a through hole 411 and an external thread portion 412. The through hole 411 is formed on the cover member 41 and penetrates the opposite sides of the cover member 41 along the second axis A12, and the through hole 411 communicates the assembly hole 31 with the outside. The male screw portion 412 is provided on the outer peripheral surface of the cover member 41 and is detachably connected to the female screw portion 311. The control member 42 is movably disposed on the through hole 411 along the second axis A12 and selectively closes the through hole 411, so that the assembly hole 31 selectively communicates with the outside world through the through hole 411. The control member 42 has a first end 421, a second end 422 opposite to the first end 421, a pressing portion 423 provided on the first end 421, and a leak-proof ring 424 provided on the outer periphery of the control member 42. The anti-drain ring 424 corresponds to the movement of the control member 42 relative to the opening 411 and selectively contacts the cover 41 to close or open the opening 411. The elastic member 43 can be a spring, and opposite ends of the elastic member 43 elastically abut against the step portion 32 and the second end 422, respectively.

Please refer to FIG. 5 and FIG. 6. The gas nozzle 5 to be inflated can be inserted into the plug member 22 and the hole cover 23, and the lever 30 is turned so that the eccentric portion 33 presses against the core tube 21, so that the plug member 22 receives the core. The tube 21 is squeezed and deformed to clamp the gas nozzle 5 to be inflated. At the same time, the biasing member 24 is compressed to abut and bias the air nozzle 5 of the object to be inflated, so that the object to be inflated, the core tube 21, the first accommodation hole 11, the second accommodation hole 12, the connection portion 13, and the portable driving device are compressed. The cylinders 201 of the air cylinder 2 are in communication with each other, so the portable air pump 2 can be used to perform the inflation operation on the object to be inflated.

When the air in the to-be-inflated object needs to be released, the user can press the pressing portion 423 of the control member 42, the control member 42 moves relative to the opening 411, and the elastic member 43 is compressed, causing the anti-drain ring 424 to detach from the cover member 41 to The opening 411 is opened. Therefore, the air in the object to be inflated can flow to the outside through the top core tube 21, the first accommodating hole 11, the second accommodating hole 12, the assembling hole 31, and the port 411 to achieve the effect of releasing pressure.

When the internal pressure of the to-be-inflated object reaches the pressure required by the user, the user can stop applying pressure to the pressing portion 423, and the control member 42 moves relative to the through port 411 again due to the elastic restoring force of the elastic member 43, causing the anti-leak ring 424 abuts the cover 41 to close the opening 411.

FIG. 7 is a schematic diagram of an external appearance of a pressure relief joint 1a according to another embodiment of the present invention. Referring to FIG. 7, in this embodiment, the connecting portion 13 a can be connected to a hose 301 of a floor-standing air pump 3 in any conventional manner, so that the pressure relief joint 1 a is used in combination with the floor-standing air pump 3.

FIG. 8 is a schematic diagram of an external appearance of a pressure relief joint 1b according to another embodiment of the present invention. Fig. 9 is a schematic sectional view of the pressure relief joint 1b shown in Fig. 8. Please refer to FIG. 8 and FIG. 9. In this embodiment, the body 10 b has an accommodating portion 14 b communicating with the first accommodating hole 11 b. A tire pressure gauge 4 is disposed in the accommodating portion 14 b, and the tire pressure gauge 4 can be Mechanical or electronic tire pressure gauge, and can display the pressure value with pointer or digital interface.

In summary, the pressure relief joints 1, 1a, and 1b of this embodiment are integrated in the assembly hole 31 of the lever 30 through the control group 40, so that the pressure relief joints 1, 1a, and 1b have a simple appearance to enhance inflation. It is convenient for operation during pressure relief, and the connecting portions 13 and 13a can be connected to various types of air pumping devices, such as a portable air pump 2 or a floor-type air pump 3, greatly increasing the versatility of the pressure relief connectors 1, 1a. In addition, the pressure relief joint 1b can also be provided with a tire pressure gauge 4 as a separate device for measuring the tire pressure.

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.

1‧‧‧Relief joint

10‧‧‧ Ontology

11‧‧‧first container

12‧‧‧Second mesopore

13‧‧‧Connecting Department

20‧‧‧ Connection group

21‧‧‧Top Heart Tube

22‧‧‧ plug

23‧‧‧ hole cover

24‧‧‧ Bias

30‧‧‧ lever

31‧‧‧Assembly hole

311‧‧‧ Internal thread

32‧‧‧Class Division

33‧‧‧eccentric

34‧‧‧ ring groove

35‧‧‧pins

40‧‧‧control group

41‧‧‧ Cover

411‧‧‧Port

412‧‧‧external thread

42‧‧‧Control

421‧‧‧ the first end

422‧‧‧second end

423‧‧‧Pressing section

424‧‧‧stop ring

43‧‧‧Elastic piece

1a‧‧‧Relief joint

13a‧‧‧Connection Department

1b‧‧‧Relief joint

10b‧‧‧ Ontology

11b‧‧‧First container

14b‧‧‧accommodation department

2‧‧‧ Portable Inflator

201‧‧‧ Cylinder

3‧‧‧ floor pump

301‧‧‧hose

4‧‧‧ tire pressure gauge

5‧‧‧ Gas nozzle

A11‧‧‧First axis

A12‧‧‧Second axis

FIG. 1 is a schematic diagram of an appearance of a pressure relief joint according to an embodiment of the present invention, showing that the pressure relief joint is connected to a portable pump.
FIG. 2 is an exploded view of the pressure relief joint shown in FIG. 1.
3 and 4 are schematic sectional views of the pressure relief joint shown in FIG. 1.
5 and 6 are schematic diagrams of the use of the pressure relief joint shown in FIG. 1, showing that the pressure relief joint is connected to a gas nozzle of an object to be inflated.
FIG. 7 is a schematic diagram of an external appearance of a pressure relief joint according to another embodiment of the present invention, showing that the pressure relief joint is connected to a floor-type air pump.
FIG. 8 is a schematic external view of a pressure relief joint according to another embodiment of the present invention, showing that the pressure relief joint is provided with a tire pressure gauge.
FIG. 9 is a schematic cross-sectional view of the pressure relief joint shown in FIG. 8.

Claims (10)

A pressure relief joint includes:
A body having a first receiving hole, a second receiving hole communicating with the first receiving hole, and a connecting portion communicating with the second receiving hole;
A connection group, which is arranged in the first accommodation hole and is suitable for connecting the object to be inflated;
A lever is pivotably connected to the second receiving hole and can abut the connection group. The lever has an assembly hole communicating with the second receiving hole; and a control group disposed in the assembly hole and including A port is connected with a control member, the port communicates the assembly hole with the outside, and the control member is movably passed through the port and selectively closes the port, so that the assembly hole selectively communicates through the port external. The pressure relief joint according to item 1 of the patent application scope, wherein the connection portion is connected to a cylinder of a portable pump. The pressure relief joint according to item 1 of the scope of patent application, wherein the connection portion is connected to a hose of a floor-standing air pump. The pressure relief joint according to item 1 of the scope of patent application, wherein the body has a receiving portion communicating with the first receiving hole, and a tire pressure gauge is disposed in the receiving portion. The pressure relief joint according to any one of claims 1 to 4, wherein the trigger lever has a step portion formed on an inner peripheral surface of the assembly hole, and the control member has a first end and an opposite side to The second end of the first end and a pressing portion disposed on the first end, the control group includes an elastic member, and opposite ends of the elastic member elastically abut against the step portion and the second end, respectively. The pressure relief joint according to item 5 of the patent application scope, wherein the control group includes a cover connected to the assembly hole, the through hole is formed on the cover and penetrates opposite sides of the cover, and the control The member has a leak-proof ring, which is provided on the outer periphery of the control member and selectively abuts the cover member to close or open the port. The pressure relief joint according to item 6 of the scope of the patent application, wherein an inner threaded portion is provided on an inner peripheral surface of the assembly hole, and an outer threaded portion is detachably connected to the inner threaded portion on an outer peripheral surface of the cover. The pressure relief joint according to any one of claims 1 to 4, wherein the trigger lever has a ring groove, two pins penetrate the body and partially enter the second receiving hole, and the two pins enter A part of the second receiving hole is clipped to the ring groove, so that the lever is pivotably connected to the second receiving hole. The pressure relief joint according to any one of claims 1 to 4, wherein the first accommodation hole is formed in the body along a first axis, and the second accommodation hole is along a first perpendicular to the first axis. Two axes are formed in the body, and the connection group includes a top core tube movably disposed along the first axis and connected to the first volume, and abutting the top core tube and being deformable. A plug member and a hole cover connected to the body, the plug member and the hole cover are suitable for insertion of a gas nozzle to be inflated, the lever has an eccentric portion that is offset from the second axis, and the eccentric portion faces The lever should be pivoted relative to the second receiving hole to selectively press against the top core tube, so that the plug member is deformed by the top core tube to deform and clamp the air nozzle to be inflated. The pressure relief joint according to item 9 of the scope of the patent application, wherein the connection group includes a biasing member disposed in the top core tube, the biasing member is adapted to bias the valve of the object to be inflated, so as to inflate The object communicates with the top core tube.