TWM573811U - Inflating joint for gas cylinder - Google Patents

Abstract

An inflation joint for a gas cylinder, the inflatable joint being detachably assembled for a gas nozzle, and comprising a base, a gas nozzle connecting unit rotatably mounted on an assembly passage of the base, and a a gas control unit having a nozzle mounting portion for screwing the nozzle, a control portion spaced from the nozzle mounting portion, an engaging portion connected therebetween, and a through portion a gas control passage, the gas control unit has a gas control member, and a gas barrier ring installed in the gas control passage and cooperated with the gas control member to perform a gas closing and inflation operation, the gas control member has a control unit The part is located on the same side of the pressure control part. Since the pressure control portion and the control portion are located on the same side and on the opposite side of the nozzle mounting portion, the air nozzle can be made more convenient when the assembly is unloaded, and the convenience in inflation is improved.

Description

Inflatable joint for gas cylinders

The present invention relates to an inflatable joint, and more particularly to an inflatable joint suitable for mounting on a gas cylinder and controlling the gas output stored in the gas cylinder.

Referring to Figures 1 and 2, there is a conventional inflation joint 1 adapted to connect a gas cylinder 10 and a gas nozzle 19, the inflation joint 1 comprising a base 11 coupled to the gas cylinder 10, a screw mounted thereon An extension ring seat 12 on the base 11, a nozzle connection unit 13 for screwing the air nozzle 19, and a gas control unit 14 mounted on the base 11. The base 11 has a surrounding wall 112 defining an assembly passage 111, and a connecting passage 113 connecting the assembly passage 111 and the cylinder 10, the surrounding wall 112 having a retaining ring for preventing the control unit 14 from coming off. 114.

The air nozzle connecting unit 13 has a nozzle assembly 131, and a connecting seat 132 rotatably mounted on the extending ring seat 12, the air nozzle assembling base 131 has a defined one Assembling the surrounding wall 134 of the hole 133, the assembly surrounding wall 134 has an internal thread 135 facing the assembly hole 133, and a rotation controlling portion 136 protruding from the extending ring seat 12, the connecting seat 132 having an assembly The hole 133 is connected to the connecting hole 137 in the axial direction. The air control unit 14 has a gas control member 141 and a resilient member 142 supported between the gas control member 141 and the connecting seat 132. The gas control member 141 has a pressure control protruding from the assembly passage 111. The portion 140, an alcove 143 facing the connecting hole 137, and a air control hole 144 that can communicate with the recess 143 and the connecting passage 113.

In use, the air nozzle 19 is inserted into the assembly hole 133 of the air nozzle assembly 131, and then the rotation control portion 136 of the air nozzle assembly 131 is manually rotated and the air nozzle 19 is mounted thereon. The air control unit 14 is in a closed position shown in FIG. 1 when there is no external force, and the air passage 144 of the air control member 14 and the connecting passage of the base 11 are at this time. 113 staggered. When the air member 141 is pushed against the elastic force of the elastic member 142, and the air control hole 144 is communicated with the connecting passage 113, the air control unit 14 is switched to an inflated position shown in FIG. The high pressure gas stored in the cylinder 10 can be entered into the nozzle 19 as indicated by the arrow in FIG.

In addition to the purpose of inflating, the conventional inflation joint 1 can be assembled and uncoupled from the nozzle connection unit 13 by screwing, so that the air nozzle 19 can be inflated during inflation. The non-shedding is combined with the inflation joint 1, but during the inflation process, since the rotation control portion 136 on the nozzle assembly 131 for the force application is extremely close to the air nozzle 19, the screwing operation and The urging force is not very convenient. In addition, the screw rotation control portion 136 and the pressing portion 140 of the air control member 141 are respectively located on opposite sides of the assembly passage 111. Therefore, it is necessary to operate at different positions during use, and the operation is performed. The convenience is also poor. In addition, the gas control unit 14 further has two gas barrier rings 145 which are tightly connected to the outer surface of the gas control member 141. In the closed position, the gas barrier rings 145 are respectively located on the left and right sides of the connecting passage 113. When the gas control unit 14 is switched from the closed position to the inflated position, the gas block 145 on the right side must pass over the connecting passage 113 so that the air control hole 144 corresponds to the passage 113, and the displacement action will be This will cause the gas barrier ring 145 to slip and wear on the sharp end face of the connecting passage 113. When the number of wear is large, the risk of airtight incomplete air leakage may be caused.

It is an object of the present invention to provide an inflatable joint for use on a gas cylinder that can improve at least one of the disadvantages of the prior art.

The novel inflation joint is mounted on a gas cylinder and is assembled for assembly with a first gas nozzle comprising a base, a gas nozzle connection unit, and a gas control unit. The base has an assembly passage, and an air inlet passage communicating with the assembly passage and mounting the gas cylinder, the air nozzle connection unit being rotatably mounted in the assembly passage of the base and having a gas nozzle a mounting portion, a control portion spaced from the nozzle mounting portion, an engaging portion connecting the nozzle mounting portion and the operating portion, and a gas control passage extending through the nozzle mounting portion, the operating portion, and the connecting portion The air control passage has a nozzle insertion portion for inserting the first air nozzle, the air nozzle insertion portion having a first internal thread for screwing the first air nozzle, the engagement portion having A communication structure connecting the connecting section and the air inlet duct. The gas control unit has a gas control member, and a gas barrier ring installed in the gas control passage, the gas control member has a reciprocating movement in the gas control passage and cooperates with the gas barrier ring to perform gas sealing and a gas control portion of the inflating action, and a pressure control portion connected to the gas control portion and located on the same side as the control portion.

The function of the present invention is that since the nozzle mounting portion and the operating portion are respectively located on opposite sides of the assembly passage, and the pressure control portion of the air control member is located on the same side as the control portion, the present invention is configured to unload the first A gas nozzle is quite convenient, and it is quite convenient when inflating.

Referring to Figures 3, 4, 5, an embodiment of the present inflatable joint is adapted to be mounted on a cylinder 2 and selectively removably coupled to a first nozzle 3 or a second nozzle 3'. The gas cylinder 2 has a bottle mouth portion 21, which is a French gas valve (PRESTA VALVE) having a first external thread 31, which is an American gas valve (SCHRADER) VALVE) has a second external thread 31', the outer diameter of which is greater than the outer diameter of the first external thread 31. The inflation joint comprises: a base 4 removably mounted on the bottle mouth portion 21 of the gas cylinder 2, a gas nozzle connection unit 5 rotatably mounted on the base 4, and one mounted on The gas nozzle is connected to the gas control unit 6 on the unit 5.

The base 4 has an annular first end surface 41, a second end surface 42 that is annular and spaced apart from the first end surface 41 along a length direction, and a first end surface 41 and the second end surface. 42 defines an inner circumferential surface 44 of the assembly passage 43, an outer circumferential surface 45 connected between the first end surface 41 and the second end surface 42, and an air inlet surface perpendicular to the first end surface 41 46. An outer peripheral surface 47 connected between the air inlet surface 46 and the outer circumferential surface 45, and an air inlet passage 48 extending through the inner circumferential surface 44 and the air inlet surface 46. The inner peripheral surface 44 has an yoke ring 441 adjacent the first end surface 41 and parallel to each other. The air inlet passage 48 has a cylinder screwing portion 481 for screwing the gas cylinder 2, and a constricted portion 482 adjacent to the inner circumferential surface 44.

The air nozzle connecting unit 5 is rotatably mounted in the assembly passage 43 of the base 4, and is axially butted by a first connecting member 51 and a second connecting member 52. The first connecting member 51 and The manner of joining the second connecting members 52 is not particularly limited. In the present embodiment, the second connecting members 52 are screwed together, and if necessary, they can be glued and fixed at the screw joints. The air nozzle connecting unit 5 has a nozzle mounting portion 53, a control portion 54 spaced apart from the nozzle mounting portion 53 along the length direction, and a connection between the nozzle mounting portion 53 and the operating portion 54. Adapter 55.

The nozzle mounting portion 53 has a first outer annular surface 531 protruding from the first end surface 41, and a first limiting surface 532 abutting against the shoulder ring 441. The operating portion 54 has a first portion a second outer annular surface 541 spaced apart from the outer annular surface 531, and a second limiting surface 542 adjacent to the second end surface 42, the engaging portion 55 having a main annular wall 551 disposed about a central axis, and by the main a first collar wall 552 protruding inwardly of the annular wall 551 and a second collar wall 553, the first collar wall 552 and the second collar wall 553 being spaced along the length direction, the first collar Wall 552 has a recess 554 that faces the second collar wall 553. The main annular wall 551 has a communication structure 555 having a ring groove 556 corresponding to the constricted portion 482 and a plurality of perforations 557 corresponding to the annular groove 556.

The air nozzle connecting unit 5 further has a gas control passage 56 extending through the first outer annular surface 531 and the second outer annular surface 541. The air control passage 56 has a section located on the first outer annular surface 531 and the first a nozzle insertion section 561 between the collar walls 552, a connecting section 562 between the first collar wall 552 and the second collar wall 553, and a corresponding one of the first collar walls 552 a first guiding section 563, a second guiding section 564 corresponding to the second collar wall 553, and a spring receiving section between the second outer annular surface 541 and the second protruding ring wall 553 565, the air nozzle insertion portion 561 has a first internal thread 566 sized to cooperate with the first external thread 31 of the first air nozzle 3, and a size and the second outer portion of the second air nozzle 3' The second internal thread 567 of the thread 31' fits.

The gas control unit 6 has a gas control member 61, a gas barrier ring 62 mounted in the groove 554, a fixing ring 64 for fixing the gas barrier ring 62, and a top support ring at the second collar ring. An elastic member 63 between the wall 553 and the gas control member 61, the gas control member 61 is formed by combining two members, and has a gas control portion 611 reciprocally movable in the gas control passage 56, and a The pressure control portion 612 is partially protruded from the air control passage 56. The pressure control portion 612 and the control portion 54 are located on the same side of the assembly passage 43 and are disposed coaxially inside and outside. The air control portion 611 has one at the first a choke section 613 that slides in the guiding section 563, and a venting section 614 connected to the choke section 613. The fixing ring 64 has a plurality of through holes 641 communicating with the communicating section 562, and the through holes 641 are Corresponding to the perforations 557 respectively.

Referring to FIGS. 3 and 6, in the present embodiment, the inflation joint is mounted on the bottle mouth portion 21 of the gas cylinder 2 and is ready for the first gas nozzle 3 to be installed, the first gas nozzle 3 is inserted into the gas control passage 56. The nozzle is inserted into the segment 561, and then the manipulation portion 54 of the nozzle connection unit 5 on the opposite side of the first nozzle 3 is grasped, and then the nozzle connection unit 5 is rotated in a screwing direction, The first external thread 31 of the first air nozzle 3 can be stably screwed with the first internal thread 566 located in the air nozzle insertion portion 561. After assembly, the air control unit 61 is assembled. In a closed position shown in FIG. 3, at this time, the gas barrier ring 62 is also tightened to the outer circumference of the gas barrier section 613 of the gas control member 61, so that the high pressure gas stored in the gas cylinder 2 cannot pass through. The first guiding section 563 of the air control passage 56.

When the air control member 61 is pressed in an inflation direction against the elasticity of the elastic member 63, and the ventilation portion 614 of the air control member 61 corresponds to the gas barrier ring 62, the gas control unit 6 will be switched to FIG. An inflating position, at this time, the high pressure gas stored in the cylinder 2 can sequentially pass through the constricted section 482, the communication structure 555, one of the through holes 641, the connecting section 562, and the first guiding section. 563, finally entering the nozzle insertion section 561, and the gas can be filled into the to-be-inflated object not shown in the figure via the first nozzle 3. When the external force applied to the air control member 61 is released, the elastic member 63 assists the valve member 61 to be reset and moved outward. When the first air nozzle 3 is to be disassembled, the first air nozzle 3 can be retracted by holding the control portion 54 of the air nozzle connecting unit 5 and reversed, due to the manipulation of the air nozzle connecting unit 5 The portion 54 and the pressure control portion 612 of the gas control member 61 are not only located on the same side, but are disposed coaxially inside and outside. Therefore, the present embodiment is relatively easy to rotate the nozzle connection unit 5, and the first nozzle 3 is unloaded. And it is quite convenient when performing inflation.

Referring to Figures 3 and 4, when the second nozzle 3' of a different form is to be mounted on the inflation joint, the second nozzle 3' is also inserted into the nozzle insertion section of the control passage 56. 561, the outer diameter of the second external thread 31' of the second air nozzle 3' is larger than the outer diameter of the first external thread 31 of the first air nozzle 3, so when inserted, 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, and when the operating portion 54 of the air nozzle connecting unit 5 is held and rotated in the screwing direction, the same can be Easily assemble the second nozzle 3'.

As can be seen from the above description, in addition to the structural innovation, the air nozzle connecting unit 5 is rotatably mounted in the assembly passage 43 of the base 4, and the nozzle mounting portion 53 of the air nozzle connecting unit 5 is provided. And the control portion 54 is located on the opposite side of the assembly channel 43, and the voltage control portion 612 of the air control member 61 and the control portion 54 are disposed on the same side of the component arrangement relationship, and the first nozzle 3 can be unloaded. And the operation of the second air nozzle 3' is more convenient, and the convenience of the inflation operation is improved. The gas block 62 of the present invention is fixed in the connecting portion 55 of the nozzle connecting unit 5 by the fixing ring 64, and does not slip through the sharp surface of any hole during the operation. The foregoing structure The abnormal wear of the gas barrier ring 62 can be reduced to reduce the risk of air leakage with insufficient airtightness.

However, the above is only the embodiment of the present invention. When the scope of the novel implementation cannot be limited thereto, all simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

2‧‧‧ gas cylinder

21‧‧‧ Bottle mouth

3‧‧‧ first gas nozzle

3'‧‧‧second gas nozzle

31‧‧‧First external thread

31’‧‧‧Second external thread

4‧‧‧Base

41‧‧‧ first end face

42‧‧‧second end face

43‧‧‧Assemble channel

44‧‧‧ inside the surrounding area

441‧‧‧Abutment ring

45‧‧‧Outer surrounding

46‧‧‧Incoming surface

47‧‧‧ outer perimeter

48‧‧‧Into the airway

481‧‧‧Cylinder screwing department

482‧‧‧ hole shrinkage

5‧‧‧Air nozzle connection unit

51‧‧‧First connector

52‧‧‧Second connector

53‧‧‧ nozzle installation

531‧‧‧First outer annulus

532‧‧‧First restriction surface

54‧‧‧Control Department

541‧‧‧Second outer annulus

542‧‧‧Second restriction

55‧‧‧Connecting Department

551‧‧‧Main ring wall

552‧‧‧First ring wall

553‧‧‧Second ring wall

554‧‧‧ Groove

555‧‧‧Connected structure

556‧‧‧ Ring groove

557‧‧‧Perforation

56‧‧‧Gas control channel

561‧‧‧Air nozzle insertion section

562‧‧‧Connected segments

563‧‧‧First guiding segment

564‧‧‧Second guiding section

565‧‧‧Spring accommodating section

566‧‧‧First internal thread

567‧‧‧Second internal thread

6‧‧‧ gas control unit

61‧‧‧ gas control parts

611‧‧‧Control Department

612‧‧‧Voltage Control Department

613‧‧‧ gas barrier

614‧‧‧ Ventilation section

62‧‧‧ gas barrier

63‧‧‧Flexible parts

64‧‧‧Fixed ring

641‧‧‧through hole

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is a schematic cross-sectional view of a conventional inflation joint in which a gas control unit is located in a Figure 2 is a view similar to Figure 1, the gas control unit is in an inflated position; Figure 3 is a cross-sectional view of an embodiment of the novel inflation joint, a gas control unit of the inflatable joint is located a closed position, and the relative relationship between the inflatable joint and a first gas nozzle and a gas cylinder; FIG. 4 is a view similar to FIG. 3, illustrating the corresponding relationship between the gas fitting and a second gas nozzle; An exploded perspective view of this embodiment; and Figure 6 is a view similar to Figure 3 with the gas control unit in an inflated position.

Claims (8)

An inflatable joint mounted on a gas cylinder and assembled for a first gas nozzle, the gas fitting comprising: a base having an assembly passage and a communication with the assembly passage for the gas a gas inlet pipe installed in the bottle; a gas nozzle connecting unit rotatably mounted in the assembly passage of the base, and having a nozzle mounting portion, a control portion spaced from the nozzle mounting portion, and a connecting portion a nozzle mounting portion and an engaging portion of the operating portion, and a gas control passage extending through the nozzle mounting portion, the operating portion and the connecting portion, the air control passage having a nozzle for inserting the first air nozzle The air nozzle insertion portion has a first internal thread for screwing the first air nozzle, the connecting portion has a communication structure connecting the air control passage and the air inlet passage, and a gas control unit having a gas control member, and a gas barrier ring installed in the gas control passage, the gas control member has a gas control valve that is reciprocable in the gas control passage and cooperates with the gas barrier ring to perform a gas closing and inflation operation unit And a controller connected to the inlet portion and the control portion and a voltage control unit on the same side. The inflation joint of claim 1, wherein the air control passage further has a communication section spaced from the air nozzle insertion section, and a first connection between the communication section and the air nozzle insertion section. a guiding portion, the connecting structure of the connecting portion is connected between the connecting portion of the air control passage and the air inlet passage, and the air control portion has a gas blocking portion that can slide in the first guiding portion. And a venting section having an outer diameter narrowed and adjacent to the gas barrier section; when the gas barrier loop is tightly outside the gas barrier section, the gas control unit is located in a closed position, when the gas barrier ring corresponds to the venting section The gas control unit is located in an inflated position. The inflation joint according to claim 2, wherein the engaging portion of the air nozzle connecting unit has a main ring wall in which the connecting structure is disposed, and a main ring wall protrudes toward the air control passage and corresponds to the first guide a first collar wall of the lead segment, and a second collar wall between the first collar wall and the steering portion, the control air passage further having a second guide corresponding to the second collar wall In the lead section, the gas control unit further has an elastic member that is supported between the second collar wall and the gas control member to assist in resetting the gas control member. The inflation joint of claim 3, wherein the first collar wall of the engaging portion has a groove facing the second collar wall and for receiving 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 communicating structure and the connecting portion. The inflation joint of claim 4, wherein the air inlet has a cylinder screwing portion for assembling the gas cylinder, and a narrowing portion between the cylinder screwing portion and the assembly passage, The communication structure has a ring groove corresponding to the hole narrowing portion, and a through hole communicating with the ring groove and the through hole. The inflatable joint according to claim 3, wherein a second nozzle is assembled in a disassemblable manner, wherein the nozzle mounting portion has a first outer annular surface, and the operating portion has a parallel to the first outer annular surface a second outer annular surface, the air control passage extends through the first outer annular surface and the second outer annular surface, and the air nozzle insertion portion of the air control passage further has a second air nozzle for screwing a second internal thread having a larger diameter than the first internal thread and the second internal thread being between the first internal thread and the first outer annular surface. The inflation joint according to claim 3, wherein the air nozzle connecting unit is axially butted by a first connecting member and a second connecting member. The inflation joint of claim 3, wherein the air control passage further has a spring receiving portion for receiving the elastic member.