TWI695946B - Inflatable joint for gas cylinder - Google Patents

Abstract

An inflation joint used on a gas cylinder, which is detachably assembled by an air nozzle, and includes a base, a gas nozzle connection unit rotatably mounted on an assembly channel of the base, and a A gas control unit, the gas nozzle connecting unit has a gas nozzle mounting part for screwing the gas nozzle, a control part spaced from the gas nozzle mounting part, an engaging part connected between the two, and a through control An air channel, the gas control unit has a gas control member, and a gas choke ring installed in the gas control channel and cooperated with the gas control member to perform the air-closing and inflation actions, the gas control member has one and the control part The pressure control section is located on the same side. Since the pressure control part and the manipulation part are located on the same side and on the opposite side of the gas nozzle mounting part, the gas nozzle can be more smoothly when assembled and unloaded, and the convenience during inflation can be improved.

Description

Inflatable joint for gas cylinder

The invention relates to an inflatable joint, in particular to an inflatable joint suitable for being installed on a gas cylinder and controlling the output of gas stored in the gas cylinder.

Referring to FIGS. 1 and 2, it is a conventional inflation joint 1 suitable for connecting a gas cylinder 10 and an air nozzle 19. The inflation joint 1 includes a base 11 combined with the gas cylinder 10 and a screw mounted on the An extension ring base 12 on the base 11, a gas nozzle connecting unit 13 for screwing the gas nozzle 19, and a gas control unit 14 mounted on the base 11. The base 11 has a surrounding wall 112 defining an assembly channel 111, and a connecting channel 113 connecting the assembly channel 111 and the gas cylinder 10, and the surrounding wall 112 has a stop ring to prevent the gas control unit 14 from detaching 114.

The gas nozzle connecting unit 13 has a gas nozzle assembly seat 131, and a connecting seat 132 rotatably mounted on the extension ring seat 12 to the gas nozzle assembly seat 131, the gas nozzle assembly seat 131 has a The assembly surrounding wall 134 of the assembly hole 133 has an internal thread 135 facing the assembly hole 133, and a section of the rotation control portion 136 protruding from the extension ring seat 12, the connecting seat 132 has a A connecting hole 137 communicating axially with the assembly hole 133. The gas control unit 14 has a gas control element 141 and an elastic element 142 propped between the gas control element 141 and the connecting base 132. The gas control element 141 has a pressure control protruding from the assembly channel 111 A portion 140, a recess 143 facing the connection hole 137, and a gas control hole 144 that can communicate the recess 143 and the connection channel 113.

When in use, insert the gas nozzle 19 into the assembly hole 133 of the gas nozzle assembly seat 131, and then hold the rotation control portion 136 of the gas nozzle assembly seat 131 and rotate to install the gas nozzle 19 on the On the inflation joint 1, without external force, the gas control unit 14 is located in a closed position shown in FIG. 1, at this time, the gas control hole 144 of the gas control member 14 and the connection channel of the base 11 113 staggered. When the gas control member 141 is pushed against the elastic force of the elastic element 142 and the gas control hole 144 communicates with the connection channel 113, the gas control unit 14 will switch to an inflation position shown in FIG. 2 The high-pressure gas stored in the gas cylinder 10 can enter the gas nozzle 19 as shown by the arrow in FIG. 2.

In addition to the purpose of inflation, the conventional inflation joint 1 can detachably connect the gas nozzle 19 to the gas nozzle connection unit 13 in a screw connection manner. Therefore, during the inflation process, the gas nozzle 19 can It does not fall off and is connected to the inflation joint 1. However, during the inflation process, since the rotation control portion 136 on the gas nozzle assembly seat 131 for applying force and screw is extremely close to the gas nozzle 19, the screw operation and The force is not very smooth, in addition, the screw control portion 136 and the pressing portion 140 of the gas control member 141 are located in the group The opposite side of the mounting channel 111, therefore, it is necessary to operate in different parts during use, and the convenience of use operation is relatively poor. In addition, the gas control unit 14 also has two gas barrier rings 145 tightened to the outer surface of the gas control element 141. In the closed position, the gas barrier rings 145 are respectively located on the left and right sides of the connecting channel 113 When the gas control unit 14 is switched from the air-closing position to the inflation position, the gas-blocking ring 145 on the right side must cross the connection channel 113 to make the gas control hole 144 correspond to the connection channel 113, and the displacement action will This may cause the gas choke ring 145 to slide and wear on the sharp end surface of the connecting channel 113. If the number of wear times is large, there is a risk of leaks due to incomplete airtightness.

The object of the present invention is to provide an inflation joint for a gas cylinder which can improve at least one disadvantage of the prior art.

The inflation joint of the present invention is installed on a gas cylinder and is detachably assembled by a first gas nozzle. The inflation joint includes a base, a gas nozzle connection unit, and a gas control unit. The base has an assembling channel and an air inlet communicating with the assembling channel and for installing the gas cylinder, the gas nozzle connecting unit is rotatably installed in the assembling channel of the base, and has an air nozzle An installation part, an operation part spaced from the gas nozzle installation part, an engagement part connecting the gas nozzle installation part and the operation part, and an air control channel penetrating the gas nozzle installation part, the operation part and the connection part , The gas control channel has a gas nozzle insertion section that allows the first gas nozzle to be inserted, the gas The nozzle insertion section has a first internal thread for screwing the first air nozzle, and the connecting portion has a communication structure connecting the communication section and the air inlet channel.

The gas control unit has a gas control member, and a gas choke ring installed in the gas control channel, the gas control member has a reciprocating movement in the gas control channel and cooperates with the gas choke ring to perform air closing and The gas control part of the inflation action, and a pressure control part connected to the gas control part and located on the same side as the control part.

The effect of the present invention is that since the gas nozzle mounting portion and the operating portion are located on opposite sides of the assembly channel, and the pressure control portion of the gas control member and the operating portion are located on the same side, the present invention disassembles the first It is quite easy to breathe, and it is also very convenient when inflating.

2: cylinder

21: Bottle mouth

3: the first gas nozzle

3’: Second air nozzle

31: The first external thread

31’: Second external thread

4: Dock

41: first end face

42: Second end face

43: Assembly channel

44: inner surface

441: Shoulder ring

45: outer surface

46: Inlet face

47: outer peripheral surface

48: Into the airway

481: Cylinder screw assembly

482: Shrinkage

5: Air nozzle connection unit

55: Interface Department

551: Main ring wall

552: The first protruding ring wall

553: Second protruding ring wall

554: groove

555: Connected structure

556: Ring groove

557: Perforation

56: gas control channel

561: Gas nozzle insertion section

562: connected segment

563: The first guide segment

564: Second guidance segment

565: Spring receiving section

566: first internal thread

567: second internal thread

6: gas control unit

61: Gas control parts

611: Gas Control Department

51: First connector

52: Second connector

53: Air nozzle mounting part

531: The first outer torus

532: The first limiting surface

54: Control Department

541: Second outer torus

542: Second restriction surface

612: Pressure Control Department

613: gas block

614: ventilation zone

62: choke ring

63: Elastic piece

64: Retaining ring

641: through hole

Other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: FIG. 1 is a schematic sectional view of a conventional inflatable joint, and a gas control unit of the inflatable joint is located in a Fig. 2 is a view similar to Fig. 1 with the gas control unit in an inflated position; Fig. 3 is a schematic cross-sectional view of an embodiment of the inflatable joint of the present invention with a gas control unit in An air-closed position, and illustrates the relative relationship between the inflation joint and a first gas nozzle and a gas cylinder; 4 is a view similar to FIG. 3, illustrating the corresponding relationship between the inflatable joint and a second gas nozzle; FIG. 5 is an exploded perspective view of the embodiment; and FIG. 6 is a view similar to FIG. 3, the gas control The unit is in an inflatable position.

Referring to FIGS. 3, 4, and 5, an embodiment of the inflatable joint of the present invention is suitable for being mounted on a gas cylinder 2, and is selectively detachably connected to a first gas nozzle 3 or a second gas nozzle 3′, The gas cylinder 2 has a bottle mouth portion 21, the first gas nozzle 3 is a French valve (PRESTA VALVE), which has a first external thread 31, and the second gas nozzle 3'is an American gas valve (SCHRADER) VALVE), which has a second external thread 31' whose outer diameter is greater than the outer diameter of the first external thread 31. The inflation joint includes: a base 4 detachably mounted on the bottle mouth 21 of the gas bottle 2, a gas nozzle connecting unit 5 rotatably mounted on the base 4, and a The gas nozzle is connected to the gas control unit 6 on the unit 5.

The base 4 has a ring-shaped first end surface 41, a ring-shaped second end surface 42 spaced parallel to the first end surface 41 along a longitudinal direction, and a first end surface 41 and the second end surface connected to it 42 and defines an inner surrounding surface 44 of an assembly channel 43, an outer surrounding surface 45 connected between the first end surface 41 and the second end surface 42, an air inlet surface perpendicular to the first end surface 41 46, a connection in this An outer peripheral surface 47 between the air inlet surface 46 and the outer surrounding surface 45 and an air inlet 48 passing through the inner surrounding surface 44 and the air inlet surface 46. The inner surrounding surface 44 has a shoulder ring 441 adjacent to the first end surface 41 and parallel to each other. The air inlet 48 has a screw fitting portion 481 for screwing the gas cylinder 2 and a constriction portion 482 adjacent to the inner surrounding surface 44.

The air nozzle connecting unit 5 is rotatably installed in the assembly channel 43 of the base 4 and is formed by axially butting a first connecting member 51 and a second connecting member 52. The first connecting member 51 and There is no particular limitation on the coupling method of the second connector 52. In this embodiment, the coupling is screwed. If necessary, the two screwed joints can be glued and fixed. The gas nozzle connection unit 5 has a gas nozzle mounting portion 53, a manipulation portion 54 spaced apart from the gas nozzle mounting portion 53 along the longitudinal direction, and a connection between the gas nozzle mounting portion 53 and the manipulation portion 54的接部部55。 The interface 55.

The valve mounting portion 53 has a first outer ring surface 531 protruding from the first end surface 41, and a first limiting surface 532 abutting the shoulder ring 441, and the operating portion 54 has a The outer ring surface 531 is parallel to the second outer ring surface 541 and a second limiting surface 542 adjacent to the second end surface 42. The connecting portion 55 has a main ring wall 551 disposed around a central axis, and the main ring wall 551 A first protruding ring wall 552 and a second protruding ring wall 553 projecting inwardly of the ring wall 551 are spaced along the length direction of the first protruding ring wall 552 and the second protruding ring wall 553, the first protruding ring The wall 552 has a groove 554 facing the second ring wall 553. The main ring wall 551 has a The communication structure 555 has a ring groove 556 corresponding to the constriction 482 and a plurality of through holes 557 corresponding to the ring groove 556.

The gas nozzle connecting unit 5 further has a gas control channel 56 penetrating through the first outer ring surface 531 and the second outer ring surface 541, the gas control channel 56 has a section located on the first outer ring surface 531 and the first A gas nozzle insertion section 561 between a protruding ring wall 552, a communication section 562 between the first protruding ring wall 552 and the second protruding ring wall 553, a corresponding to the first protruding ring wall 552 The first guiding section 563, a second guiding section 564 corresponding to the second protruding ring wall 553, and a spring accommodating section between the second outer annular surface 541 and the second protruding ring wall 553 565, the gas nozzle insertion section 561 has a first internal thread 566 that matches the size of the first external thread 31 of the first gas nozzle 3, and a size that matches the second outer thread of the second gas nozzle 3' Thread 31' cooperating second internal thread 567.

The gas control unit 6 has a gas control member 61, a gas choke ring 62 installed in the groove 554, a fixing ring 64 for fixing the gas choke ring 62, and a top supporting the second protruding ring An elastic member 63 between the wall 553 and the gas control member 61, the gas control member 61 is formed by connecting two components, and has a gas control part 611 that can reciprocate in the gas control channel 56 and a Partly protruding from the pressure control part 612 of the gas control channel 56, the pressure control part 612 and the manipulation part 54 are located on the same side of the assembly channel 43, and are coaxially arranged inside and outside, the gas control part 611 has a The sliding choke section 613 in the guiding section 563 and a ventilation section 614 connected to the choke section 613. The fixing ring 64 has a plurality of through holes 641 communicating with the communication section 562. Minute Do not correspond axially with the perforation 557.

Referring to FIGS. 3 and 6, in this embodiment, when the inflation joint is installed on the mouth portion 21 of the gas bottle 2 and is ready for installation of the first gas nozzle 3, the first gas nozzle 3 is inserted into the gas control channel 56 In the gas nozzle insertion section 561, next, hold the manipulation portion 54 of the gas nozzle connection unit 5 on the opposite side of the first gas nozzle 3, and then rotate the gas nozzle connection unit 5 in a screwing direction, so As a result, the first external thread 31 of the first gas nozzle 3 can be gradually screwed with the first internal thread 566 located in the gas valve insertion section 561, and after assembly, the gas control unit 6 position In a gas-closed position shown in FIG. 3, at this time, the gas-blocking ring 62 will also be tightened around the gas-blocking section 613 of the gas-controlling member 61, so the high-pressure gas stored in the gas bottle 2 cannot pass through the The first guiding section 563 of the gas control channel 56.

When overcoming the elasticity of the elastic member 63 and pressurizing the gas control member 61 in an inflation direction, and the ventilation section 614 of the gas control member 61 corresponds to the gas blocking ring 62, the gas control unit 6 will switch to FIG. 6 An inflated position at this time, the high-pressure gas stored in the gas bottle 2 can sequentially pass through the hole constriction section 482, the communication structure 555, one of the through holes 641, the communication section 562, the first guide section At 563, finally entering the gas nozzle insertion section 561, the gas can be filled into a to-be-inflated object not shown in the figure through the first gas nozzle 3. When the external force applied to the gas control member 61 is released, the elastic member 63 will assist the gas control member 61 to reset and move outward. To disassemble the first gas nozzle 3, as long as holding the manipulation portion 54 of the gas nozzle connection unit 5 and reverse, the first gas nozzle 3 can be released, due to the manipulation of the gas nozzle connection unit 5 Part 54 and the pressure control part 612 of the gas control member 61 are not Side, and the inside and outside are coaxially arranged, so this embodiment is quite handy when rotating the gas nozzle connecting unit 5, and also quite convenient when assembling and unloading the first gas nozzle 3 and performing inflation.

Referring to FIGS. 3 and 4, when the second air nozzle 3 ′ of different forms is to be installed on the inflation joint, the second air nozzle 3 ′ is also inserted into the air nozzle insertion section of the air control channel 56 On 561, since the outer diameter of the second external thread 31' of the second gas nozzle 3'is larger than the outer diameter of the first external thread 31 of the first gas nozzle 3, when inserting, the second The air nozzle 3 ′ will abut against the outer side of the second internal thread 567 of the air nozzle connecting unit 5. When the hand grips the operating portion 54 of the air valve connecting unit 5 and rotates along the screwing direction, the same The second gas nozzle 3'is easily assembled.

As can be seen from the above description, in addition to structural innovation, the present invention is that the gas nozzle connecting unit 5 is rotatably installed in the assembly channel 43 of the base 4 and the gas nozzle mounting portion 53 of the gas nozzle connecting unit 5 And the manipulating portion 54 is located on the opposite side of the assembly channel 43, and at the same time, the pressure control portion 612 of the gas control member 61 and the manipulating portion 54 are located on the same side of the component arrangement relationship, which can indeed allow the assembly of the first air nozzle 3 And the operation of the second gas nozzle 3'is more convenient, and at the same time, the convenience of the inflation operation is improved. In addition, the gas blocking ring 62 of the present invention is fixedly installed in the connecting portion 55 of the gas nozzle connecting unit 5 by the fixing ring 64, and will not slip through any sharp surface of the hole during operation. The abnormal wear of the choke ring 62 can be reduced to reduce the risk of air leakage due to insufficient air tightness.

However, the above are only examples of the present invention, and the scope of implementation of the present invention cannot be limited by this, all the patent applications and patent specifications according to the present invention The simple equivalent changes and modifications made in the content are still covered by the patent of the present invention.

2: cylinder

21: Bottle mouth

3: the first gas nozzle

31: The first external thread

4: Dock

41: first end face

42: Second end face

552: The first protruding ring wall

553: Second protruding ring wall

554: groove

555: Connected structure

556: Ring groove

557: Perforation

56: gas control channel

43: Assembly channel

44: inner surface

441: Shoulder ring

45: outer surface

46: Inlet face

47: outer peripheral surface

48: Into the airway

481: Cylinder screw assembly

482: Shrinkage

5: Air nozzle connection unit

53: Air nozzle mounting part

531: The first outer torus

532: The first limiting surface

54: Control Department

541: Second outer torus

542: Second restriction surface

55: Interface Department

551: Main ring wall

561: Gas nozzle insertion section

562: connected segment

563: The first guide segment

564: Second guidance segment

565: Spring receiving section

566: first internal thread

567: second internal thread

6: gas control unit

61: Gas control parts

611: Gas Control Department

612: Pressure Control Department

613: gas block

614: ventilation zone

62: choke ring

63: Elastic piece

64: Retaining ring

641: through hole

Claims (8)

An inflation joint is installed on a gas cylinder and is detachably assembled by a first gas nozzle. The inflation joint includes: a base, having an assembly channel, and a communication with the assembly channel and supplying the gas Air inlet for bottle installation; an air nozzle connecting unit, which is rotatably installed in the assembly channel of the base, and has an air nozzle mounting portion, an operating portion spaced from the air nozzle mounting portion, and an air connection The nozzle mounting part and the connecting part of the control part, and a gas control channel penetrating through the gas nozzle mounting part, the controlling part and the connecting part, the gas control channel has a gas nozzle plug for inserting the first gas nozzle A segment, the gas nozzle insertion segment has a first internal thread for screwing the first gas nozzle, the connecting portion has a communication structure connecting the gas control channel and the air inlet channel; and a gas control unit, having A gas control member, and a choke ring installed in the gas control channel, the gas control member has a gas control that can reciprocate in the gas control channel and cooperate with the gas choke ring to perform air closing and inflation actions Part, and a pressure control part connected to the gas control part and located on the same side as the control part. The inflation joint according to claim 1, wherein the gas control channel further has a communication section spaced from the gas nozzle insertion section, and a first connection between the communication section and the gas nozzle insertion section A guide section, the communication structure of the connecting portion connects between the communication section of the gas control channel and the air inlet, and the gas control section has a gas blocking section that can slide in the first guide section, And a ventilation section with a reduced outer diameter and adjacent to the choke section; when the choke ring is tightly packed outside the choke section, the gas control unit is in a closed position, when the choke ring corresponds to the ventilation section , The gas control unit is in an inflation position. The inflation joint according to claim 2, wherein the connecting portion of the gas nozzle connection unit has a main ring wall provided with the communication structure, and a main ring wall protruding from the main ring wall to the gas control channel and corresponding to the first guide The first protruding ring wall of the leading section and a second protruding ring wall interposed between the first protruding ring wall and the manipulation portion, the gas control channel further has a second guide corresponding to the second protruding ring wall In the lead section, the gas control unit further has an elastic member that is supported between the second protruding ring wall and the gas control member to assist in resetting the gas control member. The inflation joint according to claim 3, wherein the first protruding ring wall of the connecting portion has a groove facing the second protruding ring wall for accommodating the gas barrier ring, and the gas control unit further has A fixing ring fixing the gas blocking ring, the fixing ring having a through hole communicating with the communication structure and the communication section. The inflation joint according to claim 4, wherein the air inlet has a screw fitting portion for assembling the gas cylinder, and a hole shrinkage portion between the screw fitting portion of the gas cylinder and the assembly channel, The communication structure has a ring groove corresponding to the constriction of the hole, and a perforation communicating with the ring groove and the through hole. The pneumatic joint according to claim 3, which is detachably assembled by a second gas nozzle, wherein the gas nozzle mounting portion has a first outer annular surface, and the control portion has a parallel to the first outer annular surface The spaced second outer ring surface, the gas control channel penetrates the first outer ring surface and the second outer ring surface, and the gas nozzle insertion section of the gas control channel further has a screw connection for the second gas nozzle The second internal thread has an aperture larger than that of the first internal thread, and the second internal thread is interposed between the first internal thread and the first outer annular surface. The pneumatic joint according to claim 3, wherein the gas nozzle connecting unit is formed by axially butting a first connecting piece and a second connecting piece. The inflation joint according to claim 3, wherein the gas control channel further has a spring accommodating section for accommodating the elastic member.

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