TWM592848U - Dual-ends adjustable lifting device - Google Patents

Abstract

The present invention discloses a double-end adjustable lifting device, which includes: an outer tube, an inner tube, a movable tube, a first valve member and a second valve member. The inner tube is arranged inside the outer tube, and the inner tube is provided with an inner chamber for filling the oil body, and an outer chamber with a common chamber of oil body and gas is arranged axially between the inner tube and the outer tube; the movable tube extends inside Tube, and can move axially along the inner chamber; the first valve member is arranged in the movable tube and can be displaced with it, when the first valve member is opened, the oil body in the inner chamber can promote the compression of the gas in the outer chamber To adjust the displacement of the movable tube relative to the outer tube; the second valve is set at the second end. When the second valve is opened, the oil in the inner chamber can flow into the outer chamber to compress the gas in the outer chamber. Adjust the displacement of the movable tube relative to the outer tube.

Description

Lifting device capable of being adjusted at both ends

This creation is related to the lifting device, especially a double-end adjustable lifting device.

According to the current bicycle seat tube, an air pressure bar is used as a lifting structure. The height of the air bar can be adjusted to meet the riding needs of users of different heights, or the height of the seat tube can be adjusted according to different terrains.

However, when the air pressure bar is adjusted to a predetermined height position, although it can meet or meet the needs of the user, when the bicycle is facing storage or folding, it will usually lower the seat tube to the lowest position to facilitate storage or It is transportation, so that when the bicycle is unfolded again, the seat tube cannot return to the predetermined height that was adjusted last time, so that the user can only readjust the height position of the seat tube, so the conventional air pressure rod is used There is still room for improvement.

In order to solve the above problems, the present invention discloses a double-end adjustable lifting device, which uses oil and gas to be mixed in the chamber, and the gas can be compressed so that the oil can compress the gas while moving between the chambers. In order to achieve the adjustment of the original height stroke and the control of lifting, and the original height will not be changed when the lifting adjustment is reset, eliminating the inconvenience of the user.

To achieve the above purpose, an embodiment of the present invention provides a double-end adjustable lifting device, which includes an outer tube, an inner tube, a movable tube, a first valve member, and a second valve member. The outer tube has a first end and a second end; the inner tube is arranged in the outer tube, the inner tube is provided with an inner chamber for filling the oil body, and an oil body and the oil tube are arranged axially between the inner tube and the outer tube The outer chamber of the gas common chamber; the movable tube extends through the first end and can move axially along the inner chamber; the first valve is arranged on the movable tube and can be displaced with it, when the first valve is opened, The oil body of the inner chamber can flow into the outer chamber, and the oil body of the inner chamber can promote the compression of the gas in the outer chamber, so that the movable tube is displaced relative to the outer tube; the second valve is provided at the second end and is selected Make the outer chamber communicate with the inner chamber, when the second valve opens, the oil in the inner chamber can flow into the outer chamber, so that the gas in the outer chamber is compressed, and the movable tube is displaced relative to the outer tube .

In this way, by utilizing the pressure balance relationship between the oil body and the gas, and using the first valve member and the second valve member, the original double-end adjustment of the height position of the movable pipe relative to the outer pipe and the movable pipe lifting adjustment are performed. The operation is simple and fast.

Furthermore, this creation uses the characteristic that the gas can be compressed, so that after the movable tube is adjusted to the preset position relative to the outer tube, when the second valve is opened, the movable tube can still be lowered relative to the outer tube again and pressed into the inner contraction , So that this creation can fully achieve a high degree of effective reduction.

In another embodiment of the creation, the creation further includes a movable piston, which is sleeved outside the inner tube and movably arranged in the outer chamber, so as to partition the outer chamber into an oil chamber and an oil-gas mixing chamber. When the movable tube is reset from the lowest position, the oil body of the oil chamber will not change, so that the movable tube can be restored to the originally adjusted height position, avoiding the inconvenience of the user.

In another embodiment of the present invention, the present invention further includes a movable piston and a communication chamber, the communication chamber is provided between the inner tube and the movable tube, the movable piston is provided in the communication chamber and sleeved on the outer periphery of the movable tube To separate the communication chamber into a first chamber and a second chamber. When the movable tube is reset from the lowest position, the oil body of the second chamber will not change, so that the movable tube can be returned to the originally adjusted height position, avoiding the inconvenience of the user.

In order to facilitate the explanation of the central idea expressed in the column of the above-mentioned content of creation, the specific embodiment is hereby expressed. In the embodiments, various objects are drawn in proportions suitable for enumeration and description, rather than drawn according to the proportions of actual elements, which will be described first.

In this article, although the terms "first" and "second" may be used to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one component from another. For example, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element without departing from the scope of the embodiments of the present creation.

Please refer to FIG. 1 to FIG. 5, which is a first embodiment of a double-end adjustable lifting device 100 of the present invention, which includes a first sleeve 1, a second sleeve 2 and A fixing portion 3 provided on the first sleeve 1 can be provided with a seat cushion 4 so that the present invention can be used as a seat tube of a bicycle so as to adjust the height of the seat cushion 4. Further, the creation further includes an outer tube 10, an inner tube 20, a movable tube 30, a first valve member 40 and a second valve member 50 disposed in the first sleeve 1 and the second sleeve 2 .

The outer tube 10 has a first end 11 and a second end 12, and a sealing member 13 is fixed on the first end 11. Wherein the first end 11 and the second end 12 are relative to the seat tube, when the first end 11 is the upper end, the second end 12 may be the lower end; when the first end 11 is the lower end, the second end 12 may be For the upper end.

The inner tube 20 is disposed in the outer tube 10, and the inner tube 20 is substantially shorter in height than the outer tube 10. In this creative embodiment, the inner tube 20 is provided with an inner chamber 21 for filling the oil body 5, and an outer chamber with a common chamber of the oil body 5 and the gas 6 is arranged axially between the inner tube 20 and the outer tube 10 14.

One end of the movable tube 30 extends through the first end 11 and the sealing member 13 and can move axially along the inner chamber 21, and the other end is connected to the fixed portion 3.

The first valve member 40 is disposed on the movable tube 30 and can be displaced with it. When the first valve member 40 is opened, the oil body 5 of the inner chamber 21 can flow into the outer chamber 14 to reduce the volume of the inner chamber 21 It is small, and the oil body 5 of the inner chamber 21 can promote the compression of the gas 6 in the outer chamber 14 to displace the movable tube 30 relative to the adjustment outer tube 10, and the height position can be adjusted.

In this embodiment, the creation further includes a movable piston 60 which is sleeved outside the inner tube 20 and movably arranged in the outer chamber 14 to partition the outer chamber 14 into an oil chamber 141 and an oil-gas mixing chamber 142, the oil chamber 141 allows the oil body 5 to be accommodated, and the oil and gas mixing chamber 142 allows the oil body 5 and the gas 6 to be accommodated to share a chamber. When the first valve member 40 is opened, the inner chamber 21 communicates with the oil chamber 141, and The displacement of the movable piston 60 toward the second end 12 is promoted. When the second valve member 50 is opened, the inner chamber 21 communicates with the oil-gas mixing chamber 142 to promote the displacement of the movable piston 60 toward the first end 11. The movable piston 60 has a first gasket 61 and a second gasket 62. The first gasket 61 abuts against the outer edge of the inner tube 20 and the second gasket 62 abuts against the inner wall of the outer tube 10.

Then in this embodiment, the first valve member 40 includes a moving valve seat 41, a first actuating lever 42, and a first passage 43. The movable valve seat 41 is disposed at the end of the movable tube 30, the first actuating rod 42 is coaxially arranged with the movable tube 30 and movably penetrates the movable valve seat 41, and the first passage 43 is disposed in the movable valve seat 41 and located in the inner chamber 21 Between the oil chamber 141.

As shown in FIGS. 3 and 4, when the first actuating lever 42 is displaced relative to the moving valve seat 41, that is, it is pressed to be in an open state, the inner chamber 21 is communicated with the oil chamber 141 via the first passage 43, so First, the oil body 5 of the inner chamber 21 flows to the oil chamber 141 of the outer chamber 14 through the first passage 43, so that the volume of the inner chamber 21 is reduced. At this time, the oil body 5 moves and flows into the oil chamber 141. The movable piston 60 can be pushed toward the second end 12 to be displaced, so that the gas 6 in the oil-gas mixing chamber 142 is compressed and reaches a pressure equilibrium state, so as to accurately adjust the height position of the movable tube 30 relative to the outer tube 10, The telescopic stroke of the movable tube 30 relative to the outer tube 10 is set.

The second valve member 50 is disposed at the second end 12 and selectively connects the outer chamber 14 with the inner chamber 21. When the second valve member 50 is opened, the oil body 5 of the inner chamber 21 can flow into the outside The chamber 14, so that the gas 6 in the outer chamber 14 is compressed to adjust the displacement of the first valve 40 relative to the outer tube 10 to adjust the lifting movement. At this time, the oil body 5 in which the inner chamber 21 flows into the oil and gas mixing chamber 142 of the outer chamber 14 is not mixed with the oil body 5 of the oil chamber 141 because the movable piston 60 is spaced.

As shown in FIG. 4, the movable tube 30 is slightly retracted relative to the outer tube 10, thereby reducing the overall height of the creation, and when the first actuating lever 42 is closed, the movable tube 30 can be fixed at a predetermined height position to complete The stroke adjustment action of this creation achieves the purpose of adjusting the height position of the movable tube 30. In addition, when the oil body 5 of the oil chamber 141 increases, the movable tube 30 moves relative to the outer tube 10 and descends and retracts into the inner tube 20. Since the oil chamber 141 has enough oil body 5 to flow between the movable tube 30 and the inner tube 20, It is possible to prevent the outer chamber 14 from having an inflow of the oil body 5 without restricting the downward movement of the movable tube 30, and the oil body 5 of the inner chamber 21 is transferred into the oil chamber 141, so that the second valve member 50 can control the flow As the amount of oil body 5 adjusted to decrease is reduced, the increase and decrease control of the oil body 5 in the oil chamber 141 and the inner chamber 21 can control the adjustment of the lifting stroke of the movable tube 30 relative to the outer tube 10.

In this embodiment, the second valve member 50 includes a fixed valve seat 51, a second actuating rod 52 and a second passage 53, the fixed valve seat 51 is sealed at the second end 12, and the height of the second actuating rod 52 is smaller The height of the first actuating rod 42 is short, the second actuating rod 52 is movably disposed on the fixed valve seat 51, the second passage 53 is disposed on the fixed valve seat 51 and is located between the inner chamber 21 and the oil-gas mixing chamber 142.

As shown in FIG. 5, when the second actuating rod 52 is displaced relative to the fixed valve seat 51, that is, it is pressed to be in an open state, the inner chamber 21 communicates with the oil-gas mixing chamber 142 via the second passage 53 to make the movable piston 60 It moves toward the first end 11 and approaches. Wherein, when the oil body 5 of the inner chamber 21 is continuously filled into the oil-gas mixing chamber 142, the gas 6 therein can be gradually compressed, so that the movable tube 30 can still be retracted into the outer tube 10 toward the second end 12, In this way, the overall height of this creation can be reduced to short, which is conducive to the effective folding or collection of bicycles.

Furthermore, when the user wants to use the bicycle again and adjust the movable tube 30 back to the previously adjusted height position, the user can open the second valve 50 and pull the movable tube 30 outward, and the oil and gas mix The oil body 5 of the chamber 142 flows back to the inner chamber 21. At this time, the volume of the oil body 5 in the oil chamber 141 has not changed. Therefore, after the oil body 5 of the inner chamber 21 flows back, the pressure of the outer chamber 14 is balanced. The oil body 5 of the inner chamber 21 can support the movable tube 30 to the original height position, so that the user does not need to readjust, which avoids inconvenience in operation.

In this way, both ends of the creation can adjust the height position of the movable tube 30 relative to the outer tube 10, which improves the convenience of use and satisfies consumer needs and expectations.

As shown in FIGS. 6 to 8, this is the second embodiment of this creation. In the second embodiment, the same element numbers as in the first embodiment represent the same elements, structures, and functions, so they are not described again. In this embodiment, a communication chamber 31 is further included. The communication chamber 31 is disposed between the inner tube 20 and the movable tube 30. The movable piston 60 is disposed in the communication chamber 31 and sleeved on the outer periphery of the movable tube 30. The communication chamber 31 is divided into a first chamber 311 and a second chamber 312, the first chamber 311 communicates with the outer chamber 14, and the first passage 43 is located between the inner chamber 21 and the communication chamber 31. As shown in FIG. 7, when the first actuating rod 42 is displaced relative to the moving valve seat 41 to open, the inner chamber 21 communicates with the second chamber 312 via the first passage 43 and promotes the movable piston 60 toward the first end 11 A displacement is generated, thereby reducing the volume of the inner chamber 21, so that the movable tube 30 can be retracted into the outer tube 10 to lower the height position.

In this embodiment, the first gasket 61 of the movable piston 60 abuts against the outer edge of the movable tube 30, and the second gasket 62 abuts against the inner wall of the inner tube 20.

As shown in FIG. 8, this embodiment is the same as the first embodiment. After the movable tube 30 is fixed at a predetermined height position relative to the outer tube 10, at this time, the second valve 50 is opened to allow the oil body 5 of the inner chamber 21 to make up Into the outer chamber 14, the gas 6 in the outer chamber 14 can be gradually compressed, whereby the movable tube 30 can still be retracted into the outer tube 10 toward the second end 12, and the overall height is reduced to the shortest. Among them, the gas 6 will exist in the upper part of the outer chamber 14 and the first chamber 311.

Similarly, since the oil body 5 of the second chamber 312 does not change as the movable pipe 30 is lowered, when the second valve member 50 is opened again and the movable pipe 30 is raised, the external chamber 14 The oil body 5 flows back into the inner chamber 21, and can support the movable tube 30 to the original height position, so that the user does not need to readjust and avoid the inconvenience in operation.

Although this creation is illustrated by a preferred embodiment, a skilled person can make various changes without departing from the spirit and scope of this creation. The above-mentioned embodiments are only used to illustrate this creation, not to limit the scope of this creation. Any modification or change that does not violate the spirit of the original creation belongs to the scope of patent application for the original creation.

100: Lifting device adjustable at both ends 2: second casing 4: Seat cushion 6: gas 11: the first end 13: Seal 141: Oil Room 20: inner tube 30: Activity management 311: First chamber 40: the first valve 42: The first actuator 50: second valve 52: Second actuator 60: movable piston 62: Second washer 1: the first casing 3: fixed part 5: oil body 10: Outer tube 12: Second end 14: outer chamber 142: Oil and gas mixing room 21: inner chamber 31: Connect the chamber 312: Second chamber 41: Moving seat 43: The first channel 51: fixed seat 53: Second channel 61: First washer

[FIG. 1] It is a schematic cross-sectional view of a first embodiment of a lifting device that can be adjusted at both ends. [FIG. 2] It is a partially enlarged schematic cross-sectional view of the first embodiment of the lifting device which can be adjusted at both ends. [Fig. 3] This is a schematic diagram of the height adjustment action of the first embodiment of the double-end adjustable lifting device, showing that the first valve is opened, the oil body flows into the oil chamber and the movable piston is displaced. [FIG. 4] This is a schematic diagram of the height adjustment action of the first embodiment of the lifting device which can be adjusted at both ends, showing that the movable tube is adjusted to an appropriate height position relative to the outer tube. [Fig. 5] This is a schematic diagram of the lifting action of the first embodiment of the lifting device with double-end adjustment, showing that the second valve is opened, the oil body flows into the oil-gas mixing chamber and the movable piston is displaced. [FIG. 6] This is a schematic cross-sectional view of a second embodiment of a lifting device that can be adjusted at both ends. [Fig. 7] This is a schematic diagram of the height-adjusting action of the second embodiment of the lifting device that can be adjusted at both ends, showing that the first valve is opened, the oil body flows into the second chamber and the movable piston is displaced. [Fig. 8] This is a schematic diagram of the lifting movement of the second embodiment of the lifting device which can be adjusted at both ends, showing that the second valve is opened and the oil body flows into the outer chamber.

5: oil body

6: gas

10: Outer tube

11: the first end

12: Second end

13: Seal

14: outer chamber

141: Oil Room

142: Oil and gas mixing room

20: inner tube

21: inner chamber

30: Activity management

40: the first valve

41: Moving seat

42: The first actuator

43: The first channel

50: second valve

51: fixed seat

52: Second actuator

53: Second channel

60: movable piston

61: First washer

62: Second washer

Claims (10)

A lifting device that can be adjusted at both ends includes: An outer tube with a first end and a second end; An inner tube is arranged in the outer tube, the inner tube is provided with an inner cavity for filling oil body, and an outer cavity of an oil body and gas common chamber is arranged axially between the inner tube and the outer tube room; A movable tube that extends through the first end and can move axially along the inner chamber; A first valve member is provided in the movable tube and can be displaced with it. When the first valve member is opened, the oil body of the inner chamber can flow into the outer chamber, and the oil body of the inner chamber Capable of promoting the compression of the gas in the outer chamber to adjust the displacement of the movable tube relative to the outer tube; and A second valve member is provided at the second end and selectively connects the outer chamber and the inner chamber. When the second valve member is opened, the oil body of the inner chamber can flow into the outer chamber The chamber, so that the gas in the outer chamber is compressed, so that the movable tube adjusts the displacement relative to the outer tube. The double-end adjustable lifting device according to claim 1, further comprising a movable piston sleeved outside the inner tube and movably arranged in the outer chamber to partition the outer chamber into an oil chamber And an oil-gas mixing chamber, when the first valve member opens, the inner chamber communicates with the oil chamber to promote displacement of the movable piston toward the second end; when the second valve member opens, the inner chamber The chamber communicates with the oil-gas mixing chamber to promote displacement of the movable piston toward the first end. The dual-end adjustable lifting device according to claim 2, wherein the movable piston has a first washer and a second washer, the first washer abuts against the outer edge of the inner tube, and the second washer abuts On the inner wall of the outer tube. The double-end adjustable lifting device according to claim 2 or 3, wherein the first valve member includes a moving valve seat, a first actuating lever and a first passage, the moving valve seat is provided on the movable tube At the end, the first actuating rod is coaxially arranged with the movable tube and movably penetrates the movable valve seat, the first passage is arranged on the movable valve seat and is located between the inner chamber and the oil chamber, when the When the first actuating rod is displaced relative to the moving valve seat, the inner chamber communicates with the oil chamber via the first passage. The double-end adjustable lifting device according to claim 4, wherein the second valve member includes a fixed valve seat, a second actuating rod and a second passage, the fixed valve seat is sealed at the second end, The second actuating rod is movably disposed on the fixed valve seat, the second channel is disposed on the fixed valve seat and is located between the inner chamber and the oil-gas mixing chamber, when the second actuating rod is displaced relative to the fixed valve seat At this time, the inner chamber communicates with the oil-gas mixing chamber via the second passage. The double-end adjustable lifting device according to claim 1, further comprising a movable piston and a communication chamber, the communication chamber is provided between the inner tube and the movable tube, and the movable piston is provided in the communication chamber The chamber is sleeved on the outer periphery of the movable tube to divide the communication chamber into a first chamber and a second chamber. The first chamber communicates with the outer chamber when the first actuating rod is opposite When the moving valve seat is displaced, the inner chamber communicates with the second chamber and promotes displacement of the movable piston toward the first end. The double-end adjustable lifting device according to claim 6, wherein the movable piston has a first washer and a second washer, the first washer abuts against the outer edge of the movable tube, and the second washer abuts On the inner wall of the inner tube. The double-end adjustable lifting device according to claim 6 or 7, wherein the first valve member includes a moving valve seat, a first actuating lever and a first passage, the moving valve seat is provided on the movable tube At the end, the first actuating rod is coaxially arranged with the movable tube and movably penetrates the movable valve seat, the first channel is arranged on the movable valve seat and is located between the inner chamber and the communication chamber, when When the first actuating rod is displaced relative to the moving valve seat, the inner chamber communicates with the second chamber via the first channel. The dual-end adjustable lifting device according to claim 8, wherein the second valve member includes a fixed valve seat, a second actuating rod and a second passage, the fixed valve seat is sealed at the second end, The second actuating rod is movably disposed on the fixed valve seat, the second channel is disposed on the fixed valve seat and is located between the inner chamber and the outer chamber, when the second actuating rod is displaced relative to the fixed valve seat At this time, the inner chamber communicates with the outer chamber via the second channel. The double-end adjustable lifting device according to claim 1, further includes a first sleeve, a second sleeve, and a fixing portion provided on the first sleeve, the outer tube, the The inner tube, the first valve member and the second valve member are disposed in the first sleeve and the second sleeve.

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