TWI664368B - Inflating device with screw-inflating head - Google Patents

Abstract

A pumping device with a screw-inflatable head can be connected to an air nozzle and includes a gas supply mechanism and an inflation head. The gas supply mechanism has an air outlet capable of outputting gas. The gas-filling head includes a screw-rotation control Base, a fixing mechanism which is sleeved on the gas supply mechanism and can rotate the screw control base around a first center line, and an inflatable joint, the screw control base has a first driving part, and the inflatable joint An engagement valve rotatably mounted on the fixing mechanism along a second center line is provided. The engagement valve has a threaded end for screwing the air nozzle, an engagement hole connected to the air outlet, and an A second driving portion that is engaged by the first driving portion of the screw control base. With the cooperation of the foregoing structure, the air nozzle can be stably installed while being convenient and convenient to operate.

Description

Inflating device with screw-inflating head

The invention relates to a pumping device, in particular to a pumping device with a screw-rotating filling head which can be detachably combined with an air nozzle by using a screw-rotating operation.

Referring to FIG. 1, a conventional air pumping device 1 is connected to a gas nozzle 11 and includes a gas supply mechanism 12 and an inflation head 10 combined with the gas supply mechanism 12. The gas supply mechanism 12 has an inner cylinder 121 defining an accommodating chamber 120, an outer cylinder 122 capable of reciprocating relative to the inner cylinder 121 along an axis, and an accommodating chamber 120 installed in the inner cylinder 121 A gas storage bottle 124 inside, which stores gas inside, and has a bottle mouth portion 125 which can be punctured.

The inflatable head 10 includes a base 13 axially coupled to the inner cylinder 121. The base 13 has a first annular wall 132 defining a first passage 131, and a second passage 133 defining a second passage 133. The second ring wall 134 is in communication with the first channel 131, and the second ring wall 134 has an external thread 135 surrounding the second channel 133. The inflatable head 10 further includes an inflatable switch 14 installed at the first channel 131 of the base 13, a puncture member 15 capable of piercing the bottle mouth portion 125 of the gas cylinder 124, and an installed at the second channel A clamping ring 16 in 133, a pressing ring 17 abutting axially with the clamping ring 16, and a pressing nut 18 screwed on the external thread 135 of the base 13.

After the air nozzle 11 penetrates the pressing nut 18, the pressing ring 17 and the clamping ring 16 in sequence, the screwing nut 18 is tightened, and then the pressing ring 17 can be pushed to the clamping ring. 16 to force the clamp ring 16 to expand and deform inward to clamp the air nozzle 11. When the inflation switch 14 opens the flow channel between the first channel 131 and the second channel 133, the gas stored in the gas storage bottle 124 can flow to the gas nozzle 11 to achieve the purpose of inflation. Since the improvement of the present invention has nothing to do with how the gas supply mechanism 12 is manually inflated and how the inflation switch 14 operates, the structure and operation of the aforementioned components are not described in detail.

It is known that the pumping device 1 can be connected or separated from the nozzle 11 by turning the tightening nut 18, but the general application of the pumping device 1 is usually very close to the stuff to be filled. For example, it is necessary to insert the inflation head 10 on the air nozzle 11 of the tire. Because the air nozzle 11 of the tire may be surrounded by steel bars or rim covers, etc., in design, the force The volume of the tightening nut 18 cannot be too large. When the tightening nut 18 is to be rotated after being inserted, it is not only difficult to apply force, but it is also inconvenient to operate. In addition, it is quite laborious to rotate the pressing nut 18 with a small volume to press the pressing ring 17 to deform the clamp ring 16. When the tightening force of the tightening nut 18 is insufficient, it is easy to cause problems such as air leakage and inflated air.

The object of the present invention is to provide a pumping device with a screw-inflating head, which can improve at least one disadvantage of the prior art.

The pumping device of the present invention can be connected with a gas nozzle, and includes a gas supply mechanism and an inflation head. The gas supply mechanism has an air outlet capable of outputting gas, and the inflation head includes a screw rotation control seat, a The screw control base is rotatable around a first center line and fixed on the gas supply mechanism, and an inflatable joint. The screw control base has a turning control part protruding from the fixing mechanism, and an extension part. A first driving part which enters into the fixing mechanism, and the inflatable joint has a connecting valve installed in the fixing mechanism, which can be rotated along a second center line, the connecting valve has a surrounding valve defining a connecting channel A wall, the surrounding valve wall having a threaded end to which the air nozzle can be screwed, a second driving portion to be engaged with the first driving portion of the screw turn control seat, and an engaging hole connected to the air outlet.

The effect of the present invention is that by driving the engagement valve to rotate through the screw rotation control seat, the air nozzle can be screwed and unscrewed in a convenient and convenient operation, and thus the convenient and reliable effect of installing the air nozzle is achieved. .

Before the present invention is described in detail, it should be noted that in the following description, similar elements are represented by the same numbers.

Referring to FIGS. 2, 3 and 4, a first embodiment of the air pumping device 2 of the present invention may be selectively detachably connected to a first air nozzle 21 and a second air nozzle 22. The first air nozzle 21 It is a structure commonly known as SCHRADER VALVE, and has a first external thread 211, and the second gas nozzle 22 is a structure commonly known as French air valve (PRESTA VALVE), and has a second external thread 221. The pumping device 2 includes a gas supply mechanism 3 and an inflation head 20 combined with the gas supply mechanism 3.

Referring to Figs. 3, 4, and 5, the gas supply mechanism 3 includes a container 31 and a gas cylinder 32 installed inside the container 31 and storing compressed gas. The container 31 has a container body 311, and a container connected to the container body 311. A container cover 312 screwed up and down on the container body 311. The container body 311 and the device cover 312 cooperate to define a container 310 for receiving the gas cylinder 32. The container cover 312 has a frame leaning against the container. A supporting portion 313 above the main body 311, a joint portion 314 protruding downward from the supporting portion 313 and screwing with the container body 311, and an engaging portion 315 protruding upward from the supporting portion 313, the connection The portion 315 has an air outlet hole 317 provided around a first center line 33 and a mounting hole 316 provided along a second center line 34. The gas storage bottle 32 has a puncture film 321 adjacent to the air outlet 317. In this embodiment, the first center line 33 is perpendicular to the second center line 34.

The gas supply mechanism 3 also has a puncture needle 35 installed in the containing chamber 310 and capable of piercing the puncture film 321, and a first leak-proofing abutting between the device cover 312 and the gas storage bottle 32 The ring 36, the puncture needle 35 has an air outlet channel 351 communicating with the air outlet 317.

The inflatable head 20 has a screw-rotation control base 4, a fixing mechanism 5 which is sleeved on the container 31 to rotate the screw-rotation control base 4 around the first center line 33, and optionally, and the first The air nozzle 21 and the second air nozzle 22 are screwed together with an inflation joint 6 and an inflation switch 7. The fixing mechanism 5 has a fixing seat 50 in the form of a sleeve. The fixing seat 50 has a fixing ring wall 51 provided around the first center line 33, a top wall 52 connected above the fixing ring wall 51, and A protruding ring wall 53 protrudes from the fixed ring wall 51 and surrounds the second centerline 34. The top wall 52 and the fixed ring wall 51 jointly define a receiving groove 54 with an opening downward, and the protruding ring wall 53 An assembling channel 55 communicating with the receiving groove 54 is defined, the fixing ring wall 51 has an assembling hole 56 corresponding to the assembling channel 55 in the axial direction, and the fixing seat 50 also has several pieces from the top wall 52 to A positioning plate 57 protruding from the receiving slot 54 is used to limit the engaging portion 315 of the device cover 312.

The screw rotation control base 4 has a rotation control portion 41 interposed between the support portion 313 of the device cover 312 and the fixed ring wall 51 of the fixing base 50, and a connection and extension is connected to the rotation control portion 41 The first driving portion 42 is inserted into the receiving groove 54 of the fixing base 5. The first driving portion 42 has a plurality of first driving teeth 421 disposed around the first center line 33.

The inflatable joint 6 has an engagement valve 61 erected between the assembling passage 55 and the assembling hole 56 of the fixed seat 50 and rotatable around the second center line 34, and a fixing cover 62 combined with the engagement valve 61. And a second leak-proof ring 63 installed inside the connecting valve 61. The engagement valve 61 has a surrounding valve wall 611 which defines an engagement channel 610. The surrounding valve wall 611 has a second driving portion 612 which is engaged with the first driving portion 42 of the screw control seat 4. A recessed groove 613 spaced apart and located on the opposite side of the air outlet 317 of the device cover 312, a fixing portion 614 protruding from the assembly hole 56 and combined with the fixing cover 62, an adjacent to the assembly hole 56 and facing the connecting channel 610 An abutment surface 615, a concave ring surface 616 interposed between the grooves 613, an engagement hole 617 connecting the concave ring surface 616 and the engagement channel 610, and a threaded end 618 facing the engagement channel 610, The second driving portion 612 has a plurality of second driving teeth 619 surrounding the second center line 34. The inflatable joint 6 also has two third leak-proof rings 64 respectively fitted in the grooves 613.

The inflatable switch 7 has a control lever 71, an elastic member 72, and an air control ring 73. The control lever 71 has a gas control portion 711 extending into the engagement channel 610 of the engagement valve 61, and a The control portion 712 protruding from the fixed cover 62, the gas control ring 73 is mounted on the gas control portion 711, and can abut against the inner surface of the surrounding valve wall 611, preventing the gas from passing through the connection from the air outlet 317 After the hole 617 enters the engaging channel 610, the elastic member 72 is abutted between the abutting surface 615 and the control portion 712, so that the control lever 71 is maintained in a closed position, which refers to the gas control The ring 73 abuts against the inner surface of the surrounding valve wall 611.

After the pumping device 2 is assembled in this embodiment, the puncture needle 35 will pierce the puncture film 321 of the gas cylinder 32 so that the compressed gas stored in the gas cylinder 32 can flow to the air outlet 317 of the container 31 . When the user chooses to connect the first air nozzle 21 to the air pumping device 2, the first air nozzle 21 is first inserted into the engagement channel 610 of the engagement valve 61 of the inflation joint 6, which means that the first The first external thread 211 of an air nozzle 21 abuts against the threaded end 618 of the connecting valve 61. Then, the rotary control portion 41 of the screw rotary control base 4 is held in hand and rotated. The first driving tooth 421 meshes with the second driving tooth 619 of the engagement valve 61. Therefore, during the rotation of the screw control seat 4, the engagement valve 61 will be driven along the second center. The wire 34 rotates, so that the first external thread 211 can be gradually pulled into the thread end 618 until the two are tight.

Referring to FIGS. 5 and 6, after the first air nozzle 21 is firmly coupled to the engagement valve 61, the user only needs to overcome the elastic force of the elastic member 72 to press the control lever 71 internally, so that the control lever 71 is changed from the The closed position is switched to an open position in FIG. 6. At this time, the gas in the gas cylinder 32 can flow from the air outlet 317 to the first gas nozzle 21. When the user relaxes the depressing action of the control lever 71 and receives the elastic force of the elastic member 72, the control lever 71 will automatically reset and switch to the closed position shown in FIG. 5. For the same reason, if the first air valve 21 is to be disassembled, as long as the screw control seat 4 is turned in the reverse direction, the first air nozzle 21 can be gradually released.

Referring to FIG. 7, it is further explained that, in addition to the first gas nozzle 21 commonly known as an American gas nozzle, the air pumping device 2 in this embodiment may also be used for the second gas nozzle commonly known as a French gas nozzle, as shown in FIG. 7. The gas nozzle 22 is assembled, and the screw control base 4 is also rotated during assembly, so that the second gas nozzle 22 and the connecting valve 61 can be easily and stably connected.

Referring to FIGS. 8, 9 and 10, the structure of a second embodiment of the air pumping device 2 of the present invention is similar to that of the first embodiment, and therefore also includes the gas supply mechanism 3, and the inflation head 20, the gas supply mechanism 3 The structure is similar to the first embodiment, the only difference is that the engaging portion 315 of the cover 312 also has a screw hole 318 provided around the first center line 33, and the inflatable head 20 also includes the screw rotation control The seat 4, the fixing mechanism 5, the inflatable joint 6 and the inflatable switch 7. The structure of the inflatable joint 6 and the inflatable switch 7 is the same as the first embodiment. The difference between the first embodiment and the second embodiment is that the fixing mechanism 5 of the first embodiment includes the sleeve. The fixing base 50 is in the form, and the screw rotation control base 4 is located below the fixing base 50. In addition to the fixing base 50, the fixing mechanism 5 of the second embodiment also has a fixing member 59, and the screw The rotary control base 4 is located above the fixed base 50, that is, the screw rotary control base 4 uses the combination of the fixing member 59 and the cover 312 to be rotatably clamped between the fixing member 59 and the fixing base 50. .

For the same reason, as long as the screw control seat 4 is rotated in this embodiment, the engagement valve 61 can be driven to rotate along the second center line 34 to achieve the group unloading of the first gas nozzle 21 or the second gas nozzle. 22 convenient purposes.

11, 12, and 13, the structure of a third embodiment of the air pumping device 2 of the present invention is similar to that of the first embodiment, and also includes the gas supply mechanism 3 and the inflatable head 20. The structure of the inflatable head 20 is similar to the first embodiment. The first embodiment is similar and includes the screw-rotation control base 4, the fixing mechanism 5, and the inflatable connector 6, that is, the inflatable switch 7 of the first embodiment is omitted (see FIG. 3). The gas supply mechanism 3 is a manually inflated structure, and includes the container 31, a piston unit 37, and a check valve 38. The container 31 has the container body 311 and a device screwed with the container body 311. A cover 312, the container body 311 has a cylinder tube 3111, and an end plug 3112 assembled on the cylinder tube 3111 and spaced from the cover 312. The end plug 3112 has an arrangement along the first center line 33. The central hole 3113 and a plurality of vent holes 3114 extending outward from the central hole 3113.

The piston unit 37 has a piston tube 371 passing through the central hole 3113 of the end plug 3112, a piston 372 located in the receiving chamber 310 and combined with the piston tube 371, and a piston 371 combined with the piston tube 371. The driving sleeve 373 is sleeved on the outside of the cylinder tube 3111 and framed. The one-way valve 38 is used to control the unidirectional flow of gas to the air outlet 317 of the cover 312.

When the gas supply mechanism 3 in this embodiment is in operation, by driving the driving sleeve 373 to reciprocate corresponding to the cylinder tube 3111, external gas can be sucked into the chamber 310, pressurized by the piston 372, and then The check valve 38 is sent to the air outlet 317. Since the inflation of this embodiment is a manual type, the inflation switch 7 (see FIG. 3) shown in the first embodiment is not required to temporarily close the air, so the present invention The third embodiment can omit the inflation switch 7 (see FIG. 3). However, for the purpose of the present invention, as shown in the third embodiment, the gas can be generated manually, or as shown in the first and second embodiments, the gas can be provided by the gas cylinder 32, as shown in FIG. As shown in the conventional example of 1, gas is supplied by using both gas storage and manual inflation, that is, the form of the gas supply mechanism 3 of the present invention is not limited to those disclosed in the embodiments.

It can be known from the above description that the present invention adds the screw control base 4 to the inflatable head 20, and changes the structure of the inflatable joint 6 to cooperate with the screw control base 4. Not only is the structure innovative, as long as the screw is rotated during operation The control seat 4 can easily drive the connecting valve 61 to rotate, so as to achieve the purpose of firmly connecting the first gas nozzle 21 and the second gas nozzle 22. Since the screw-rotation control seat 4 is large in size and away from the first The gas nozzle 21 and the second gas nozzle 22, therefore, the aforementioned structure of the present invention does have the advantages of convenient operation, labor-saving operation, and the assembly of the first gas nozzle 21 and the second gas nozzle 22.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, any simple equivalent changes and modifications made according to the scope of the patent application and the contents of the patent specification of the present invention are still Within the scope of the invention patent.

2‧‧‧ pumping device

20‧‧‧ inflatable head

21‧‧‧The first gas nozzle

211‧‧‧first external thread

22‧‧‧Second air nozzle

221‧‧‧Second external thread

3‧‧‧Gas Supply Agency

31‧‧‧container

310‧‧‧Capacity Room

311‧‧‧ container body

3111‧‧‧cylinder tube

3112‧‧‧End plug

3113‧‧‧center hole

3114‧‧‧ Vent

312‧‧‧cap

313‧‧‧backrest

314‧‧‧Combination

315‧‧‧Interconnection Department

316‧‧‧Mounting hole

317‧‧‧outlet

318‧‧‧screw holes

32‧‧‧gas cylinder

321‧‧‧ puncture film

33‧‧‧First Centerline

34‧‧‧ Second Centerline

35‧‧‧ puncture needle

351‧‧‧Air outlet

36‧‧‧The first leak-proof ring

37‧‧‧Piston unit

371‧‧‧Piston tube

372‧‧‧Piston

373‧‧‧Driver sleeve

38‧‧‧Check valve

4‧‧‧ screw turn control seat

41‧‧‧Transfer Control Department

42‧‧‧First drive unit

421‧‧‧first drive tooth

5‧‧‧ fixed institutions

50‧‧‧Fixed

51‧‧‧Fixed ring wall

52‧‧‧Top wall

53‧‧‧ protruding ring wall

54‧‧‧ tank

55‧‧‧Assembly channel

56‧‧‧Assembly hole

57‧‧‧ Positioning plate

59‧‧‧Fixed parts

6‧‧‧ Inflatable joint

61‧‧‧Connecting valve

610‧‧‧Connecting channel

611‧‧‧ around the valve wall

612‧‧‧Second driving unit

613‧‧‧Ditch

614‧‧‧Fixed

615‧‧‧ abut

616‧‧‧concave torus

617‧‧‧ Connection hole

618‧‧‧Threaded end

619‧‧‧Second driving tooth

62‧‧‧Fixed cover

63‧‧‧Second Leakproof Ring

64‧‧‧The third leak-proof ring

7‧‧‧ inflatable switch

71‧‧‧ Joystick

711‧‧‧Air Control Department

712‧‧‧Control Department

72‧‧‧elastic

73‧‧‧gas control ring

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 combined cross-sectional view of a conventional air pump device; FIG. 2 is a first embodiment of the air pump device of the present invention A three-dimensional reference drawing illustrating the relative relationship between the pumping device and a first gas nozzle and a second gas nozzle; Figure 3 is an exploded perspective view of the first embodiment; Figure 4 is a diagram of the first embodiment A combined cross-sectional view illustrating the relative relationship between the pumping device and the first gas nozzle; FIG. 5 is an incomplete cross-sectional view similar to FIG. 4, with an inflation switch of the pumping device in a closed position; FIG. 6 is a view similar to FIG. 5 FIG. 7 is another combined sectional view of the first embodiment, illustrating the relative relationship between the air pump and the second air nozzle; FIG. 8 is a second view of the air pump of the present invention A three-dimensional reference drawing of the embodiment also illustrates the relative relationship between the pumping device and the first nozzle and the second nozzle; FIG. 9 is a perspective view of the second embodiment Solution; Figure 10 is an incomplete combined sectional view of the second embodiment, illustrating the relative relationship between the pumping device and the first nozzle; Figure 11 is a three-dimensional exploded view of a third embodiment of the pumping device of the present invention FIG. 12 is a combined sectional view of the third embodiment, a gas supply mechanism of the pumping device is in a starting position; and FIG. 13 is a view similar to FIG. 12, the gas supply mechanism is in a inflation position .

Claims (9)

A pumping device can be connected to a gas nozzle and includes: a gas supply mechanism having an air outlet capable of outputting gas; and an inflation head including a screw rotary control base, and one screw rotary control base can surround a The first centerline rotates a fixing mechanism mounted on the gas supply mechanism, and an inflatable joint. The screw rotation control base has a rotation control portion protruding from the fixing mechanism, and a first protrusion extending into the inside of the fixing mechanism. The driving part, and the inflatable joint has an engagement valve installed in the fixing mechanism, which can be rotated along a second center line, the engagement valve has a surrounding valve wall defining an engagement channel, and the surrounding valve wall has a A threaded end to which the air nozzle can be screwed, a second driving portion to be engaged with the first driving portion of the screw turn base, and an engaging hole communicating with the air outlet hole, wherein the first driving portion has A plurality of first driving teeth disposed around the first center line, and the second driving portion has a plurality of second driving teeth disposed around the second center line, the first center line Perpendicular to the second center line. The inflating device according to claim 1, wherein the fixing mechanism has a fixing seat covering the outside of the first driving part of the screw control base, and the gas supply mechanism includes a container having a container A body, and a container cover combined with the container body and having the air outlet, the container body and the device cover together defining a container chamber, the device cover having a supporting portion erected above the container body, and a An engaging portion protruding from the abutting portion, and the turning control portion of the screw turning control base is interposed between the abutting portion and the fixing base. The air pumping device according to claim 1, wherein the gas supply mechanism includes a container, the container having a container body, and a container cover combined with the container body and having the air outlet, the container body and the device cover A container chamber is defined together, the cover has a supporting portion erected on the container body, and an engaging portion protruding from the supporting portion, the engaging portion has a screw hole, and the fixing mechanism has a sleeve A fixing seat on the connecting part of the device cover, and a fixing part screwed on the screw hole of the device cover, the rotating control part of the screw rotation control part is interposed between the fixing base and the fixing part between. According to claim 2 or claim 3, the engagement portion of the cover has a mounting hole provided along the second center line and through which the engagement valve passes, and the surrounding valve of the engagement valve The wall also has two concave grooves respectively located on opposite sides of the air vent hole, and a concave annular surface interposed between the concave grooves, and the engagement hole communicates with the concave annular surface and the engagement channel. The inflating device according to claim 4, wherein the fixed seat has a fixed ring wall and a protruding ring wall protruding from the fixed ring wall, the protruding ring wall defines an assembly channel, and the fixed ring wall has An assembling hole corresponding to the assembling passage, the connecting valve passes along the second center line and is erected between the assembling passage and the assembling hole. The air pumping device according to claim 5, wherein the gas supply mechanism further includes a piston unit capable of generating gas in the container, and a check valve installed in the container and allowing the gas to flow unidirectionally to the air outlet. . The inflating device according to claim 5, wherein the gas supply mechanism further includes a gas cylinder installed in the container, and the inflating head further includes an inflating switch capable of opening and closing the connecting hole. The inflating device according to claim 7, wherein the inflatable switch has a lever that can open and close the engaging hole, and an elastic member that maintains the lever in a closed position. The inflating device according to claim 8, wherein the gas storage bottle has a puncture film adjacent to the air outlet, and the gas supply mechanism further has a puncture needle installed in the container and capable of penetrating the puncture film.