TWI598508B - Transformer can be quickly switched pump - Google Patents

Description

Variable pressure pump that can be quickly switched

The present invention relates to a variable pressure pump that can be quickly switched to a high pressure pumping mode or a generally low pressure pumping mode.

According to the current market, bicycles can be roughly divided into road vehicles, off-road vehicles and mountain bikes. In order to reduce the rolling resistance, the tires of road vehicles will hit a higher tire pressure (the higher the tire pressure, the lower the rolling resistance). In addition, in order to absorb vibration, off-road vehicles and mountain bikes must enter a lower tire pressure (if the tire pressure is too high, the suspension effect will be lost), and the manufacturer of the pump will develop a switchable height. Inflator for tire pressure (high pressure pumping mode) and low tire pressure (low pressure pumping mode).

The conventional variable pressure pump is like the "pressure-inflating pump" of China No. 089222988, the "variable pressure pump" of No. 089205218, the "saving and high-pressure pump" No. 086207142, etc. However, the structure of the patents is quite complicated, resulting in inefficient processing costs, complicated assembly, and inconvenient operation.

The present inventors have developed the present invention by continually conceiving and innovating in view of the shortcomings of the prior patents.

The present invention provides a quick-changeable variable pressure pump which is mounted on a cylinder having a cylinder bore and is movable with a rear end cover for defining a boundary between the cylinder bore and the rear end cover. A rear air chamber is defined, and the rear end cover is additionally provided with a pressure relief hole connecting the air chamber inside and outside, and an on-off valve capable of opening and closing the pressure relief hole, so that when the pressure relief hole is opened, the rear air chamber can be released. The second stage is pressurized with air for application to the general low pressure pumping mode.

Therefore, the configurations of the present invention can greatly simplify the structural configuration and assembly complexity of the prior patent application, so as to achieve economical principles and novel functions while substantially saving man-hours and improving efficiency, thereby removing the upper Uncovering the problem of the pre-patent case, and effectively improving the convenience of handling, it is indeed a novel technology of the variable pressure pump.

10‧‧‧Wind mouth

11‧‧‧ Airway

12‧‧‧ screw seat

13‧‧‧胴

20‧‧‧中管

21‧‧‧Medium hole

22‧‧‧ screwing department

23‧‧‧Piston

24‧‧‧main control valve

241‧‧‧ valve seat

242‧‧‧ Ring groove

243‧‧‧Position

244‧‧‧O-ring

25‧‧‧ anti-reverse structure

30‧‧‧ gas nozzle group

31‧‧‧Wind mouth

32‧‧‧ mouth holder

33‧‧‧ mouth cover

40‧‧‧ cylinder

400‧‧‧ cylinder bore

41‧‧‧ front end cover

411‧‧‧ front hole

42‧‧‧ front air chamber

43‧‧‧ front check valve

44‧‧‧Back end cover

45‧‧‧ rear air chamber

46‧‧‧ rear check valve

47‧‧‧Relief hole

A‧‧‧ switch valve

471‧‧‧Spiral sleeve

48‧‧‧Living

481‧‧‧Washers

482‧‧‧ Touch Department

49‧‧‧ Spring

50‧‧‧ Grip

51‧‧‧匣室

52‧‧‧ Guide slot

53‧‧‧ into space

60‧‧‧ controls

61‧‧‧ Slider

62‧‧‧ Guide block

The first figure is an exploded schematic view of the present invention.

The second drawing is a schematic view of the three-dimensional combination of the present invention.

The third figure is a schematic cross-sectional view of the present invention in a high pressure pumping mode.

The fourth, fifth, sixth and seventh figures are schematic diagrams of the continuous actions of the third figure.

The eighth figure is a schematic cross-sectional view of the present invention in a general low pressure pumping mode.

The ninth, tenth, eleventh and twelfth drawings are schematic diagrams of the continuous action of the eighth figure.

Referring to the first to seventh figures, the present invention at least includes a tuyere 10 having a through air passage 11 and a screw base 12 at one end of the air passage 11 and a ring centered on the screw base 12 A middle portion 20; a middle tube 20 having a through hole 21 having a screw portion 22 fixed to the screw seat 12 at one end, and one end of the middle hole 21 is connected to one end of the air passage 11 The other end of the middle pipe 20 is fixed with a piston 23, and the piston 23 is provided with a main control valve 24, and a check structure 25 capable of opening and closing the intermediate hole 21 is installed between the piston 23 and the main control valve 24, The anti-reverse structure 25 is a habit, so this The main control valve 24 has a valve seat 241 fixed to the outer end of the piston 23. The outer circumference of the valve seat 241 is radially recessed with a ring groove 242 for opening the cylinder hole 400, and is wider than the groove of the ring groove 242. The bottom is provided with a hole 243 for closing the anti-reverse structure 25, and the ring groove 242 is additionally sleeved with an O-ring 244, so that the O-ring 244 can be moved along the ring groove 242 to switch the position of the hole 243 to communicate with the inside and the outside. ; a nozzle group 30 is attached to the air passage 11 at the other end, and the tuyeres 31, the nozzle holder 32 and the mouth cover 33 are sequentially installed from the inside to the outside, and are fixed by the nozzle cover 33 to the tuyere head 10; a cylinder 40 having a cylinder bore 400 for sliding the piston 23 to allow the cylinder 40 to enter and exit the crotch portion 13; the cylinder bore 400 encloses a front end cap 41 between the piston 23 and the tuyer head 10 for defining therebetween The front air chamber 42 is further provided with a hole 411 before the middle tube 20 is slid and a front check valve 43 is additionally mounted; the other end of the cylinder hole 400 is closed with a rear end cover 44 for interposing therebetween The rear air chamber 45 is defined. The rear end cover 44 is further provided with a rear check valve 46. The front check valve 43 and the rear check valve 46 are conventionally used, and thus the present invention will not be described in detail; please cooperate with the third to fifth figures. When the front end cover 41 and the piston 23 move in the opposite direction, the rear end cover 44 and the piston 23 move backwards, and the O-ring 244 cuts the contact hole 243 and the rear air chamber 45 is turned on. The hole 243 is in a state of closing the front air chamber 42 and the check structure 25 so as to be able to open the check structure 25 in the same direction and perform the first stage of pressurized air supply to the middle hole 21, at which time the front check valve 43 is closed. Then, the check valve 46 is capable of opening the air supply to the rear air chamber 45; please cooperate with the fifth to seventh views, when the front end cover 41 and the piston 23 move in opposite directions, The cover 44 and the piston 23 move in opposite directions, and the O-ring 244 cuts the contact hole 243 and the front air chamber 42 is turned on, so that the air hole 45 and the intermediate hole 21 and the check structure 25 are opened after the contact hole 243 is turned on. State so that it can turn on the back The structure 25 is provided with a second stage of pressurized air supply to the middle hole 21 for use in the high pressure pumping mode. At this time, the front check valve 43 is open to supply air to the front air chamber 42, and the rear check valve 46 is The back end cover 44 is further provided with a pressure relief hole 47 communicating with the inside and outside of the rear air chamber 45. The pressure release hole 47 is provided with an on-off valve A, which is composed of a screw sleeve 471, a shutter 48 and a spring 49. The threaded sleeve 471 is screwed to the pressure relief hole 47 for positioning the shutter 48 and the spring 49 in the pressure relief hole 47, so that the shutter 48 is pushed by the spring 49, so that the gasket 481 sleeved on the shutter 48 has The pressure relief hole 47 is closed, and the shutter 48 has a touch portion 482 capable of protruding the pressure relief hole 47. The touch portion 482 is provided for opening the pressure relief hole 47; A grip 50 is sleeved around the outer circumference of the cylinder 40 and the rear end cover 44, and defines a chamber 51 for communicating the pressure relief hole 47 between the grip sleeve 50 and the rear end cover 44, and a communication chamber 51 is further provided. a guide groove 52 inside and outside, and a trapping space 53 is recessed outside the guide groove 52; a control button 60 having a slider 61 limited to the chamber 51 and a guide block 62 limited to the guide groove 52 and not protruding into the space 53 so that the guide block 62 can follow the guide groove 52 and be opposite to the rear The limit movement of the end cover 44 between the first position and the second position causes the control button 60 to release the touch portion 482 in the first position to keep the shutter 48 pushed by the spring 49 to close the pressure relief hole 47. Therefore, the present invention can perform the high pressure pumping mode as in the third to seventh figures, but when the finger of the person pushes the guide block 62 as shown in the eighth figure to shift the knob 60 to the second position, the slider 61 thereof. The device can overcome the preset spring force of the spring 49 for interlocking the touch portion 482 and opening the pressure relief hole 47. Please cooperate with the ninth to twelfth drawings, so that the second stage pressurized air supply can be released and applied to General low pressure pumping mode.

Therefore, the present invention has at least the following features:

1. The present invention can be modified only by replacing the pressure relief hole 47, the spring 49 and the end cover 44 of the shutter 48, and the externally mounted knob 60 and the grip 50, thereby modifying the existing variable pressure pump, which greatly simplifies The complicated structure of the patent pre-existing case reveals that the assembly has substantial efficiency improvement, and it can truly exert revolutionary high creation and economic benefits.

2. The present invention can complete the high pressure pumping mode or the general low pressure pumping mode only by pulling the knob 60, and the operation thereof is quite convenient.

In summary, the core technology of the present invention is: "The rear end cover 44 is provided with a pressure relief hole 47, and an on-off valve A capable of opening and closing the pressure relief hole 47." Therefore, the on-off valve A can also be simplified. The use of a plug is because these configurations can break through the complicated structure of the reform, the time-consuming assembly and the difficulty of handling. It is a high-level creation of a technical concept, which should meet the requirements of the patent application, and apply in accordance with the law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent variations and modifications made by the scope of the present invention should still belong to the present invention. Within the scope of coverage.

10‧‧‧Wind mouth

11‧‧‧ Airway

12‧‧‧ screw seat

13‧‧‧胴

20‧‧‧中管

21‧‧‧Medium hole

23‧‧‧Piston

24‧‧‧main control valve

241‧‧‧ valve seat

242‧‧‧ Ring groove

243‧‧‧Position

244‧‧‧O-ring

25‧‧‧ anti-reverse structure

31‧‧‧Wind mouth

32‧‧‧ mouth holder

33‧‧‧ mouth cover

40‧‧‧ cylinder

400‧‧‧ cylinder bore

41‧‧‧ front end cover

411‧‧‧ front hole

42‧‧‧ front air chamber

43‧‧‧ front check valve

44‧‧‧Back end cover

46‧‧‧ rear check valve

471‧‧‧Spiral sleeve

47‧‧‧Relief hole

48‧‧‧Living

481‧‧‧Washers

482‧‧‧ Touch Department

49‧‧‧ Spring

50‧‧‧ Grip

51‧‧‧匣室

52‧‧‧ Guide slot

53‧‧‧ into space

61‧‧‧ Slider

62‧‧‧ Guide block

Claims (13)

A variable pressure pump capable of quickly switching, comprising at least: a tuyere having a gas passage therethrough; a middle tube having one end fixed to the tuyere and having a middle end of the air passage a hole, the other end of the middle tube is fixed with a piston, the piston is installed with a main control valve, and a reverse structure capable of opening and closing the middle hole is installed between the piston and the main control valve; and a cylinder having a piston for sliding a cylinder bore having a front end cover between the piston and the tuyere for defining a front air chamber therebetween, the front end cover being further provided with a hole and a front check valve before being able to slide along the middle tube; The other end of the cylinder bore is closed with a rear end cover for defining a rear air chamber therebetween, the rear end cover is provided with a rear check valve, and the main control valve has a valve seat fixed on the outer end of the piston, the valve seat The outer circumference of the annular recess is provided with a ring groove for opening the cylinder hole, and the bottom of the groove of the ring groove is provided with a hole for closing the anti-reverse structure, and the other sleeve of the ring groove has an O-ring, so that the O-ring can be along The ring groove moves to move the switching hole to communicate with the front air chamber or the rear air chamber; when the front end cover and the piston move in opposite directions, the rear end cover and the piston system are in phase Moving, and the main control valve is in the front air chamber and the anti-reverse structure, so as to be able to open the anti-reverse structure and perform the first-stage pressurized air supply to the middle hole, at which time the front check valve is closed, and then the rear check valve is closed. The one-way valve can open the air supply to the rear air chamber; when the front end cover and the piston move relative to each other, the rear end cover and the piston system move in opposite directions, and the main control valve is in the air chamber after being turned on and the anti-reverse The structure is such that the anti-reverse structure can be opened in the same direction and the second-stage pressurized air supply is performed on the middle hole. At this time, the front check valve is opened to supply air to the front air chamber, and the rear check valve is closed; The cover is further provided with a pressure relief hole connecting the air chamber inside and outside, the pressure relief hole is connected to a chamber, and an on-off valve is provided, the switch valve has a touch portion a control button having a slider limited to the diverticulum and having a guide block for moving the guide block from the first position to the second position, so that the control button is in the first position The touch control portion can be released to close the pressure release hole. When the guide block is pushed to move the control button to the second position, the touch control portion is opened to open the pressure release hole, thereby controlling whether the second stage pressurized air supply is performed. The variable pressure pump capable of quickly switching according to claim 1, wherein the switching valve is composed of a flap and a spring, and the shutter and the spring are positioned in the pressure relief hole, so that the shutter is pushed by the spring and has a closed pressure at any time. The potential of the hole, and the shutter has a touch portion that can protrude the pressure relief hole, and the touch portion provides for opening the pressure relief hole. The variable pressure pump capable of quickly switching according to claim 2, wherein the switch valve further has a screw sleeve installed on the rear end cover for positioning the spring and the valve in the pressure relief hole. The variable pressure pump can be quickly switched as described in claim 2 or 3, and the control button can open and close the pressure relief hole by interlocking the shutter touch portion. The variable pressure pump capable of quickly switching according to claim 1, wherein a sleeve is sleeved on the outer circumference of the cylinder and the rear end cover, and the grip sleeve is provided with a guiding groove connecting the inside and the outside, and the touch portion is extended. Diverticulum. The variable pressure pump that can be quickly switched as described in claim 1 has a plug valve that is a plug. The variable pressure pump capable of quickly switching according to claim 1, 2, 3 or 6, wherein the wind mouth has a screw seat at one end of the air passage, and the ring centered on the screw seat is provided with a cylinder for the cylinder to enter and exit. One end of the middle tube has a screwing portion fixed to the screw seat. The variable pressure pump capable of quickly switching according to claim 1, 2, 3 or 6, wherein a gas nozzle group is installed at the other end of the air passage, and the air nozzle group is sequentially arranged from the inside to the outside by the air nozzle and the nozzle seat. The mouth cover is composed and positioned by the mouth cover screwed to the wind mouth. A quick-changeable variable pressure pump is mounted on a movable cylinder having a rear end cover for defining a rear air chamber between the cylinder hole and the rear end cover, and a rear end cover The pressure relief hole is connected to the inside and outside of the gas chamber, and the pressure relief hole is connected to a chamber, and an on-off valve is provided, the switch valve has a touch portion; and a control button has a limit of 匣a slider in the chamber, and having a guide block, so that the guide block can move between the first position and the second position, so that when the control button is in the first position, the touch portion can be released and the pressure relief hole is closed. When the guide block is displaced to the second position, the touch control portion is opened to open the pressure release hole, and when the pressure release hole is opened, the second portion of the rear air chamber can be released from the pressurized air supply to be applied to the general low pressure. Pumping mode. The variable pressure pump capable of quickly switching according to claim 9, wherein the opening and closing valve is composed of a flap and a spring, and the shutter and the spring are positioned at the pressure relief hole, so that the shutter is pushed by the spring and has a closed pressure at any time. The potential of the hole, and the shutter has a touch portion that can protrude the pressure relief hole, and the touch portion provides for opening the pressure relief hole. The variable pressure pump can be quickly switched as described in claim 10, and the control button can provide a movable shutter touch portion to open and close the pressure relief hole. The variable pressure pump capable of quickly switching according to claim 9, wherein a sleeve is sleeved on the outer circumference of the cylinder and the rear end cover, and the sleeve is provided with a guiding groove connecting the inside and the outside, and the touch portion is extended. Diverticulum. The variable pressure pump that can be quickly switched as described in claim 9 has a plug valve that is a plug.