Gas-oil pressure lifting device

Abstract

The utility model relates to a gas-oil pressure lifting device which comprises a lifting pipe, a cylinder body and a control valve. The lifting pipe is provided with a head section and a body section connected with the head section, the head section is provided with an air chamber, the cylinder body is arranged in the body section of the lifting pipe, an outer oil chamber is formed between the cylinder body and the body section of the lifting pipe, an inner oil chamber communicated with the outer oil chamber is further arranged in the cylinder body, the control valve is provided with a valve seat and a valve rod, the valve seat is arranged at the bottom end of the cylinder body, and the valve rod is arranged on the valve seat. The outer oil chamber is communicated with the head section to form an upper oil chamber which is located at the upper end of the cylinder body and completely isolates the cylinder body from the air chamber, and when the valve seat is opened, the air internal pressure of the air chamber enables the oil body of the upper oil chamber or the outer oil chamber to return to the inner oil chamber. Therefore, the gas-oil pressure lifting device can achieve the effects of stable driving and simplified structure.

Description

Technical Field

[0001] The utility model relates to a lifting device, in particular to a gas-oil pressure lifting device. Background Art

[0002] The bicycle seat tube height adjustment structure disclosed in the patent TW I562922 utilizes an oil-gas isolation device for connecting two isolation tubes of different diameters, and cooperates with a floating piston to form inner and outer air chambers and inner and outer oil chambers, so as to increase the oil chamber space with a larger amount of hydraulic oil in response to the increase in cylinder stroke. However, the configuration of the air chamber isolation tube makes the overall structure more complicated, and it is also more troublesome to manufacture. Therefore, the aforementioned patent still has room for improvement. Utility Model Content

[0003] The main purpose of the utility model is to provide a gas-oil pressure lifting device, which has a simple structure and stable driving.

[0004] In order to achieve the above main purpose, the gas-oil pressure lifting device provided by the utility model includes a lifting pipe, a cylinder body, and a control valve. The lifting pipe has a head section and a body section connected to the head section, and the head section has an air chamber; the cylinder body is arranged in the body section of the lifting pipe and forms an outer oil chamber connected to the upper oil chamber with the body section of the lifting pipe. In addition, the cylinder body has an inner oil chamber connected to the outer oil chamber; the control valve has a valve seat and a valve stem, the valve seat is arranged at the bottom end of the cylinder body, and the valve stem can be arranged on the valve seat to move up and down, and is used to open or close the connection between the inner oil chamber and the outer oil chamber; wherein, the outer oil chamber is connected to the head section to form an upper oil chamber located at the upper end of the cylinder body and completely isolating the cylinder body from the gas chamber, and when the valve seat is opened, the gas internal pressure of the gas chamber causes the oil in the upper oil chamber or the outer oil chamber to return to the inner oil chamber.

[0005] From the above, it can be seen that the gas-oil pressure lifting device of the utility model omits the configuration of the air chamber isolation tube compared to the prior art, and instead arranges the air chamber and the upper oil chamber in the head section of the lifting tube. When the valve seat is opened, the internal gas pressure of the air chamber causes the oil in the upper oil chamber or the outer oil chamber to return to the inner oil chamber, thereby achieving the effect of stable driving and simplified structure.

[0006] Preferably, a floating piston is arranged between the air chamber and the upper oil chamber, and the floating piston is used to compress the high-pressure gas in the air chamber or push the oil in the upper oil chamber to the outer oil chamber.

[0007] Preferably, the head section of the lifting tube is provided with an air nozzle, through which the air chamber is conveniently inflated so that the high-pressure gas in the air chamber maintains sufficient pressure.

[0008] Preferably, an upper plug is provided at the top end of the cylinder body, and the upper plug has an upper oil guide hole connecting the upper oil chamber and the outer oil chamber, so that the oil can flow between the upper oil chamber and the outer oil chamber through the upper oil guide hole.

[0009] Preferably, the inner diameter of the head section is smaller than the inner diameter of the body section, so that the air chamber can allow the high-pressure gas to quickly reach a sufficient pressure when inflating.

[0010] Preferably, an upper cylinder body for accommodating the air chamber and the upper oil chamber is arranged in the head section, and the inner diameter of the upper cylinder body is smaller than the inner diameter of the body section. In this way, the processing of the lifting tube can be made easier.

[0011] The detailed structure, features, assembly or use of the gas-oil pressure lifting device provided by the utility model will be described in the detailed description of the implementation method later. However, those skilled in the art should understand that the detailed description and the specific embodiments listed for implementing the utility model are used to illustrate the utility model, and are not used to limit the scope of the claims of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A three-dimensional diagram of the gas-oil pressure lifting device provided in the first embodiment of the utility model is shown.

[0013] Figure 2 A cross-sectional view of the gas-oil pressure lifting device provided in the first embodiment of the present utility model is shown.

[0014] Figure 3 Similar Figure 1 , mainly showing that the valve stem is in the open position.

[0015] Figure 4 Similar Figure 2 , mainly showing the height decrease of the lifting tube.

[0016] Figure 5 Similar Figure 3 , mainly showing that the valve stem is in the open position.

[0017] Figure 6 Similar Figure 2 , mainly showing the state where the floating piston is omitted.

[0018] Figure 7 A cross-sectional view of the gas-oil pressure lifting device provided by the second embodiment of the present utility model is shown.

[0019] Figure 8 A cross-sectional view of the gas-oil pressure lifting device provided by the third embodiment of the present utility model is shown.

[0020] Reference numerals:

[0021] 10: Gas and oil pressure lifting device

[0022] 10': Gas and oil pressure lifting device

[0023] 10”: Gas and oil pressure lifting device

[0024] 12: External oil chamber

[0025] 20: Elevator

[0026] 20': Lifting pipe

[0027] 21: Header

[0028] 212: Top opening

[0029] 22: Figure

[0030] 23: Air Chamber

[0031] 24: Oiling room

[0032] 25: Floating piston

[0033] 26: Sealing ring

[0034] 27: Valve seat

[0035] 28: Air nozzle

[0036] R1: Inner diameter of the head section

[0037] R2: Inner diameter of the body

[0038] 30: Cylinder

[0039] 31: Upper plug

[0040] 32: Upper oil guide hole

[0041] 33: Lower plug

[0042] 34: Lower oil guide hole

[0043] 35: Inner oil chamber

[0044] 40: Control valve

[0045] 41: Valve seat

[0046] 412: Valve hole

[0047] 414: Upper perforation

[0048] 416: Bottom perforation

[0049] 42: Valve stem

[0050] P1: Closed position

[0051] P2: Open position

[0052] 43: Casing

[0053] 44: Putter

[0054] 45: Elastic parts

[0055] 46: Mounting seat

[0056] 47: Trigger

[0057] 50: External pipe

[0058] 60: Seat tube

[0059] 70: Seat clamping device

[0060] 80: Upper cylinder block DETAILED DESCRIPTION

[0061] The applicant first explains that in the entire specification, including the embodiments described below and the claims of the patent application, the terms related to directions are based on the directions in the drawings. Secondly, in the embodiments and drawings to be described below, the same element numbers represent the same or similar elements or their structural features.

[0062] Please refer to Figure 1 to Figure 2 The gas-oil pressure lifting device 10 of the first embodiment of the utility model includes a lifting pipe 20 , a cylinder body 30 , and a control valve 40 .

[0063] In this embodiment, the lifting tube 20 is a seat tube and is used to connect a seat cushion clamping device 70 at its top end, and is also used to pass through an outer tube 50 at its bottom end. The lifting tube 20 has a head section 21 and a body section 22 connected to the head section 21, wherein an air chamber 23 is provided inside the head section 21. In addition, the top end of the head section 21 has a top opening 212 connected to the air chamber 23, and the lifting tube 20 is provided with a gas nozzle seat 27 at the top opening 212, and the gas nozzle seat 27 is equipped with a gas nozzle 28, through which the gas nozzle 28 can be used to inflate the air chamber 23. During the inflation process, since the inner diameter R1 of the head section 21 is smaller than the inner diameter R2 of the body section 22, the high-pressure gas in the air chamber 23 can quickly reach a sufficient pressure.

[0064] The cylinder body 30 is disposed in the body section 22 of the lifting tube 20 and forms an outer oil chamber 12 with the body section 22 of the lifting tube 20. The outer oil chamber 12 is connected to the head section 21 of the lifting tube 20 to form an upper oil chamber 24 located at the upper end of the cylinder body 30 and completely isolating the cylinder body 30 from the air chamber 23. In this embodiment, a floating piston 25 is disposed between the air chamber 23 and the upper oil chamber 24. Two sealing rings 26 are embedded on the outer circumference of the floating piston 25. The two sealing rings 26 abut against the inner circumference of the head section 21 of the lifting tube 20. Next, an upper plug 31 is disposed at the top end of the cylinder body 30. The upper plug 31 has a plurality of upper oil guide holes 32 connecting the upper oil chamber 24 and the outer oil chamber 12. A lower plug 33 is disposed at the bottom end of the cylinder body 30. The lower plug 33 has a plurality of lower oil guide holes 34 connecting the outer oil chamber 12. In addition, the cylinder body 30 is hollow inside and has an inner oil chamber 35 . The inner oil chamber 35 is connected to the outer oil chamber 12 via the lower oil guide hole 34 .

[0065] The control valve 40 has a valve seat 41, a valve stem 42, a sleeve 43, a push rod 44, and an elastic member 45. The valve seat 41 is arranged at the bottom end of the cylinder body 30 and has a valve hole 412, an upper through hole 414 connecting the valve hole 412 and the inner oil chamber 35, and a lower through hole 416 connecting the valve hole 412 and the outer oil chamber 12; the valve stem 42 is arranged in the valve hole 412 of the valve seat 41, and is used to open or close the connection between the inner oil chamber 35 and the outer oil chamber 12. When the valve stem 42 is in the position as shown in FIG. Figure 2 In the closed position P1 shown in FIG. 1 , the inner oil chamber 35 and the outer oil chamber 12 are not connected to each other. Figure 3 In the open position P2 shown, the inner oil chamber 35 and the outer oil chamber 12 are connected to each other, and the internal pressure of the high-pressure gas A in the air chamber 23 causes the oil body 0 in the upper oil chamber 24 or the outer oil chamber 12 to return to the inner oil chamber 35; the sleeve 43 is located in the outer tube 50, the top end of the sleeve 43 passes through the lower plug 33 and is connected to the valve seat 41, and the bottom end of the sleeve 43 is inserted in a mounting seat 46 fixed to the bottom end of the outer tube 50; the push rod 44 is inserted in the sleeve 43 and can be pushed by a trigger member 47 pivotally arranged on the mounting seat 46 to push the valve stem 42 upward from the closed position P1 to the open position P2; the elastic member 45 is arranged between the top end of the valve seat 41 and the top end of the valve stem 42, and is used to provide elastic force to keep the valve stem 42 in the closed position P1.

[0066] When the length of the lifting tube 20 is to be shortened, the push rod 44 is first pushed upward by the trigger member 47 so that the push rod 44 pushes the valve stem 42 to the position as shown in FIG. Figure 3The lifting tube 20 is moved to the open position P2 as shown, and at the same time, a force is applied to press down the lifting tube 20. At this time, the oil 0 in the inner oil chamber 35 flows to the outer oil chamber 12 through the upper through hole 414, the valve hole 412, the lower through hole 416 and the lower oil guide hole 34, and then flows from the outer oil chamber 12 to the upper oil chamber 24 through the upper oil guide hole 32. The oil 0 entering the upper oil chamber 24 compresses the high-pressure gas A in the gas chamber 23 through the floating piston 25. When the lifting tube 20 is shortened to a desired length, the trigger member 47 releases the thrust applied to the push rod 44, so that the valve stem 42 is returned to the position as shown in the figure by the elastic force of the elastic member 45. Figure 4 The closed position P1 shown completes the positioning of the lifting tube 20 .

[0067] Conversely, when the length of the lifting tube 20 is to be restored, the push rod 44 is pushed upward by the trigger member 47 so that the push rod 44 pushes the valve stem 42 to the position as shown in FIG. Figure 5 In the open position P2 shown in the figure, the high-pressure gas A in the air chamber 23 pushes the oil body 0 in the upper oil chamber 24 through the floating piston 25. At this time, the oil body 0 in the upper oil chamber 24 will flow to the outer oil chamber 12 through the upper oil guide hole 32, and then flow from the outer oil chamber 12 to the inner oil chamber 35 through the lower oil guide hole 34, the lower through hole 416, the valve hole 412 and the upper through hole 414. When the lifting tube 20 returns to a desired length, the trigger member 47 releases the thrust applied to the push rod 44, so that the valve stem 42 is returned to the desired length by the elastic force of the elastic member 45. Figure 2 The closed position P1 shown completes the positioning of the lifting tube 20 .

[0068] In the above adjustment process, since the floating piston 25 is a solid structure, the floating piston 25 can be pushed as long as the friction between the outer sealing ring 26 and the head section 21 of the lifting tube 20 is overcome, so that the floating piston 25 is driven relatively smoothly. Figure 6 As shown, the floating piston 25 can be omitted according to actual needs, so that the oil body 0 in the upper oil chamber 24 and the high-pressure gas A in the air chamber 23 are in contact with each other but not mixed. In this way, when the length of the lifting tube 20 is adjusted down, the oil body 0 entering the upper oil chamber 24 will directly compress the high-pressure gas A in the air chamber 23. In addition, when the length of the lifting tube 20 is adjusted up, the high-pressure gas A in the air chamber 23 directly pushes the oil body 0 in the upper oil chamber 24, which can also achieve an effect similar to the above embodiment.

[0069] On the other hand, please refer to Figure 7The gas-oil pressure lifting device 10' of the second embodiment of the utility model is substantially the same in structure as the first embodiment, except that the lifting tube 20' is assembled with the cylinder body 30 to form an integrated structure. When used in conjunction with the seat tube 60, the lifting tube 20' is connected to the seat tube 60 and can be driven synchronously with the seat tube 60. Such a structural configuration allows the gas-oil pressure lifting device 10' to independently achieve the same effect as the first embodiment, and can be applied to the seat tube 60 or other bicycle accessories that need to adjust the height according to actual needs. As for how the lifting tube 20' drives the seat tube 60 to adjust the height, it is substantially the same as the above embodiment and will not be described in detail here.

[0070] Please continue to refer to Figure 8 The gas-oil pressure lifting device 10" of the third embodiment of the utility model is substantially the same in structure as the first embodiment, except that an upper cylinder body 80 for accommodating the gas chamber 23 and the upper oil chamber 24 is disposed in the head section 21, and the inner diameter R3 of the upper cylinder body 80 is smaller than the inner diameter R2 of the body section 22, so that it is not necessary to process the head section 21 and the body section 22 with different inner diameters, making the processing of the lifting tube 20 easier.

[0071] In summary, compared with the prior art, the gas-oil pressure lifting device 10, 10', 10" of the utility model omits the configuration of the air chamber isolation tube, and instead sets the mutually adjacent air chamber 23 and upper oil chamber 24 in the head section 21 of the lifting tube 20, 20'. When the length of the lifting tube 20, 20' is shortened, the oil body 0 entering the upper oil chamber 24 will compress the high-pressure gas A in the air chamber 23. When the length of the lifting tube 20, 20' is increased, the high-pressure gas A in the air chamber 23 will push the oil body 0 in the upper oil chamber 24, thereby achieving the effect of stable driving and simplified structure.

[0072] The embodiments of the present invention disclose preferred embodiments. Any local changes or modifications derived from the technical concept of the present invention and easily inferred by those skilled in the art do not deviate from the scope of the claims of the present invention.

Claims

1. A gas-oil pressure lifting device, characterized in that: include: A lifting tube having a head section and a body section connected to the head section, wherein the head section has an air chamber; a cylinder body, which is disposed in the body of the lifting pipe and forms an outer oil chamber between the body of the lifting pipe, and the cylinder body has an inner oil chamber connected to the outer oil chamber; and a control valve having a valve seat and a valve stem, wherein the valve seat is disposed at the bottom end of the cylinder body, and the valve stem is disposed on the valve seat so as to be movable up and down, and is used to open or close the communication between the inner oil chamber and the outer oil chamber; Among them, the outer oil chamber is connected to the head section to form an upper oil chamber located at the upper end of the cylinder body and completely isolating the cylinder body and the air chamber. When the valve seat is opened, the internal gas pressure of the air chamber causes the oil in the upper oil chamber or the outer oil chamber to return to the inner oil chamber.

2. The gas-oil pressure lifting device according to claim 1, characterized in that: A floating piston is arranged between the air chamber and the upper oil chamber.

3. The gas-oil pressure lifting device according to claim 1, characterized in that: The head section of the lifting tube is provided with an air nozzle, and the air nozzle is used for inflating the air chamber.

4. The gas-oil pressure lifting device according to claim 1, characterized in that: An upper plug is arranged at the top end of the cylinder body, and the upper plug has an upper oil guide hole communicating with the upper oil chamber and the outer oil chamber.

5. The gas-oil pressure lifting device according to claim 1, characterized in that: The inner diameter of the head section is smaller than the inner diameter of the body section.

6. The gas-oil pressure lifting device according to claim 1, characterized in that: An upper cylinder body is arranged in the head section, and the upper cylinder body accommodates the air chamber and the upper oil chamber.

7. The gas-oil pressure lifting device according to claim 6, characterized in that: The inner diameter of the upper cylinder body is smaller than the inner diameter of the body.

8. The gas-oil pressure lifting device according to claim 1, characterized in that: The lifting tube is a seat tube.

9. The gas-oil pressure lifting device according to claim 1, characterized in that: The lifting tube is arranged in a seat tube and connected with the seat tube.

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