CN118025383A - Bicycle seat tube assembly - Google Patents
Bicycle seat tube assembly Download PDFInfo
- Publication number
- CN118025383A CN118025383A CN202211396757.8A CN202211396757A CN118025383A CN 118025383 A CN118025383 A CN 118025383A CN 202211396757 A CN202211396757 A CN 202211396757A CN 118025383 A CN118025383 A CN 118025383A
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- China
- Prior art keywords
- tube
- air chamber
- chamber
- oil chamber
- control valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000035939 shock Effects 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims description 26
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 13
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 239000000872 buffer Substances 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
The bicycle seat tube assembly comprises a seat tube, a lifting tube, a shock absorbing unit and a lifting unit. The lifting tube is arranged in the seat tube in a mode of up-down displacement, the shock absorbing unit is arranged in the lifting tube and is provided with a first air chamber, the lifting unit is arranged in the lifting tube and is provided with a control valve, an operating member, a second air chamber, a first oil chamber adjacent to the first air chamber and a second oil chamber adjacent to the second air chamber, and the control valve is positioned between the first oil chamber and the second oil chamber and is opened and closed under the control of the operating member and used for controlling the communication relationship between the first oil chamber and the second oil chamber. Therefore, the bicycle seat tube assembly is provided with the first air chamber and the second air chamber at the two opposite ends of the first oil chamber and the second oil chamber respectively, so that the shock absorbing effect can be improved and adjusted.
Description
Technical Field
The invention relates to the technical field of bicycles, in particular to a bicycle seat tube assembly.
Background
The adjustable bicycle seat tube disclosed in taiwan patent No. TW I589475 comprises a lower tube, an upper tube and a piston set, wherein the upper tube is disposed in the lower tube, the upper tube has an inner space for containing gas and oil, the gas is adjacent to the upper end of the upper tube, the oil is far away from the upper end of the upper tube and contacts the gas on the surface, the piston set has a piston disposed in the inner space, a fluid valve path disposed in the piston and a rod body connected with the piston, and the structural configuration can provide a shock absorbing effect by the gas above the oil. However, in the above patent documents, the lower end of the oil body is not provided with gas, and the shock absorbing effect provided by the light depending on the gas above the oil body is rather limited.
The height adjusting device disclosed in taiwan patent No. TW M587618 includes an outer tube, an inner tube disposed in the outer tube, a valve path disposed at one end of the outer tube, and a piston displaceably inserted in the inner tube, wherein an inner chamber for accommodating gas and oil is formed between the piston and the outer tube, such that when the valve path is closed, if an external force is applied to the piston, the volume of the inner chamber is reduced to increase the pressure of the gas to resist the external force, thereby generating a shock absorbing effect. However, in the above patent documents, the first end plug is fixed and cannot float, and the shock absorbing effect provided by the light by the gas above the oil body is quite limited.
Disclosure of Invention
The invention mainly aims to provide a bicycle seat tube assembly which has a good shock absorbing effect.
In order to achieve the above main object, the bicycle seat tube assembly of the present invention comprises a seat tube, a lifting tube, a shock absorbing unit, and a lifting unit. The lifting tube is arranged on the seat tube in a mode of being capable of moving up and down; the shock absorbing unit is arranged in the lifting tube and is provided with a first air chamber; the lifting unit is arranged in the lifting tube and is provided with a control valve, an operating member, a second air chamber, a first oil chamber adjacent to the first air chamber and a second oil chamber adjacent to the second air chamber, wherein the control valve is positioned between the first oil chamber and the second oil chamber and is controlled by the operating member to open and close, when the control valve is opened, the first oil chamber and the second oil chamber are communicated with each other, so that the lifting tube can lift relative to the seat tube, and when the control valve is closed, the first oil chamber and the second oil chamber are not communicated with each other, so that the lifting tube can compress the first oil chamber to generate shock absorption when being subjected to external force.
As can be seen from the above, if an external force is applied to the top end of the lifting tube under the condition that the control valve is closed, the lifting tube is pressed into the first air chamber, and at this time, the volume of the first air chamber is reduced, so that the air pressure in the first air chamber is increased to resist the external force, and further a shock absorbing effect is generated, and in the same time, the volume of the second oil chamber or the second air chamber is increased due to the downward movement of the lifting tube, so that the oil body in the second oil chamber or the air in the second air chamber can provide a damping effect, so as to slow down the pressing speed and the rebound speed of the lifting tube.
Preferably, the shock absorbing unit has a body, the body is of a single-tube structure, the first air chamber is located at the top end of the body, and the second air chamber is located at the bottom end of the body.
Preferably, the shock absorbing unit further has a first floating piston disposed in the body, and the first floating piston is located between the first air chamber and the first oil chamber to separate the oil and gas.
Preferably, a stop part is arranged below the first floating piston, and the stop part is used for limiting the travel of the first floating piston, so that on one hand, the gas pressure of the first gas chamber can be regulated, and on the other hand, the gas pressure in the first gas chamber can be prevented from being larger than the gas pressure in the second gas chamber.
Preferably, the top and bottom ends of the outer peripheral surface of the first floating piston are respectively provided with a sealing ring which is abutted against the body, and the upper sealing ring and the lower sealing ring are used for buffering the pressure born by the first floating piston so as to avoid damage.
Preferably, the top end of the outer peripheral surface of the control valve is provided with a sealing ring which is abutted against the body, and the sealing ring is used for buffering the pressure born by the control valve so as not to be damaged.
Preferably, the body has a double-pipe structure, and has an outer pipe and an inner pipe disposed in the outer pipe, the first air chamber is disposed at the top end of the inner pipe, the second air chamber is disposed between the inner pipe and the outer pipe, the control valve is disposed in the inner pipe, the first oil chamber is disposed between the inner pipe and the control valve, and the second oil chamber is disposed between the inner pipe and the outer pipe and between the inner pipe and the control valve.
Preferably, the shock absorbing unit further has a first floating piston disposed in the inner tube and a second floating piston disposed between the inner tube and the outer tube, the first floating piston being disposed between the first air chamber and the first oil chamber for separating the oil and gas, the second floating piston being disposed between the second air chamber and the second oil chamber for separating the oil and gas.
Preferably, the top and bottom ends of the outer peripheral surface of the first floating piston are respectively provided with a sealing ring which is abutted against the inner tube, and the upper sealing ring and the lower sealing ring are used for buffering the pressure born by the first floating piston so as to avoid damage.
Preferably, if the body is of a single tube type structure, the pressure of the gas contained in the second gas chamber is greater than the pressure of the gas contained in the first gas chamber, so as to avoid failure of the lifting function.
Drawings
FIG. 1 is a cross-sectional view of a bicycle seat tube assembly in accordance with embodiment 1 of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a cross-sectional view of a bicycle seat tube assembly in a shock absorbing state according to embodiment 1 of the present invention;
FIG. 4 is an enlarged view of a portion of a bicycle seat tube assembly in accordance with embodiment 1 of the present invention, showing a stop portion disposed below a first floating piston;
FIG. 5 is a cross-sectional view of a bicycle seat tube assembly in accordance with embodiment 2 of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5;
FIG. 7 is a cross-sectional view of a bicycle seat tube assembly in a shock absorbing state in accordance with embodiment 2 of the present invention;
FIG. 8 is similar to FIG. 4 and mainly shows the arrangement of a stop below the first floating piston;
FIG. 9 is a partial cross-sectional view of a bicycle seat tube assembly in accordance with embodiment 3 of the present invention.
[ Reference numerals description ]
10-Bicycle seat tube assembly; 10' -bicycle seat tube assembly; 12-a first air chamber; 14-a second air chamber; 16-a first oil chamber; 18-a second oil chamber; 181-an outer oil zone; 182-inner oil zone; 20 seat pipes; 30-lifting tube; 32-a seat cushion mounting base; 40-a shock absorbing unit; 41-body; 42-an outer tube; 43-inner tube; 44-end plugs; 45-valve; 46-a first floating piston; 47-a second floating piston; 48-sealing rings; 50-lifting units; 52-a control valve; 56-sealing rings; 58-action; 59-pin member; 60-stop.
Detailed Description
Throughout this specification, including the examples described below and the claims, directional terms are used with respect to the orientation of the terms in the drawings. Next, in the embodiments to be described below and the drawings, the same component numerals denote the same or similar components or structural features thereof.
Referring to fig. 1, a bicycle seat tube assembly 10 of embodiment 1 of the present invention includes a seat tube 20, a lift tube 30, a shock absorbing unit 40, and a lift unit 50.
The lifting tube 30 is inserted into the seat tube 20 from the top end of the seat tube 20, and a seat cushion mounting seat 32 is arranged at the top end of the lifting tube 30.
The shock absorbing unit 40 has a body 41, and the body 41 is disposed in the elevator tube 30 and can operate synchronously with the elevator tube 30. In the present embodiment, the body 41 has a double-pipe structure and has an outer pipe 42 and an inner pipe 43 disposed in the outer pipe 42, wherein an end plug 44 is disposed at the bottom end of the outer pipe 42, a valve 45 is disposed at the top end of the inner pipe 43, and the top end of the inner pipe 43 has a first gas chamber 12 for containing high-pressure gas.
As shown in fig. 2, the lifting unit 50 has a control valve 52, the control valve 52 is disposed in the bottom end of the inner tube 43 and forms a second air chamber 14 for containing high pressure air, a first oil chamber 16 for containing oil and a second oil chamber 18 for containing oil with the control valve 52 and the inner tube 43, wherein the second air chamber 14 is disposed between the inner tube 43 and the outer tube 42, and the air of the second air chamber 14 can be introduced into the first air chamber 12 or the air of the first air chamber 12 can be discharged to the second air chamber 14 by means of the valve 45, thereby controlling the space of the first air chamber 12 and further adjusting the hardness of shock absorption; the first oil chamber 16 is located between the inner tube 43 and the control valve 52 and is adjacent to the first air chamber 12, and the first air chamber 12 and the first oil chamber 16 are separated by a first floating piston 46 provided in the inner tube 43; the second oil chamber 18 has an outer oil zone 181 between the inner tube 43 and the outer tube 42 and an inner oil zone 182 between the inner tube 43 and the control valve 52, wherein the outer oil zone 181 also adjoins the second air chamber 14, the second air chamber 14 being separated from the outer oil zone 181 of the second oil chamber 18 by means of a second floating piston 47 arranged between the inner tube 43 and the outer tube 42. As shown in fig. 2, the lifting unit 50 further has an actuating member 58 passing through the lifting tube 30 and the end plug 44, the actuating member 58 is a rod body in this embodiment, when the control valve 52 is controlled by the actuating member 54 to close, the inner oil areas 182 of the first oil chamber 16 and the second oil chamber 18 are not communicated with each other, the lifting tube 30 cannot be displaced up and down relative to the seat tube 20 at this time, and the height of the seat cushion cannot be adjusted, and when the control valve 52 is controlled by the actuating member 58 to open, the inner oil areas 182 of the first oil chamber 16 and the second oil chamber 18 are communicated with each other, and the lifting tube 30 at this time can be displaced up and down relative to the seat tube 20, so as to adjust the height of the seat cushion.
As can be seen from the above, when the control valve 52 is closed and an external force is applied to the top end of the lifting tube 30, the lifting tube is pressed into the first air chamber 12, as shown in fig. 3, the volume of the first air chamber 12 is reduced, so that the air pressure in the first air chamber 12 is increased to resist the external force, and further the vibration absorbing effect is generated, and the volume of the inner oil area 182 is increased by the downward movement of the lifting tube 30 at the same time, so that the oil body can flow between the outer oil area 181 and the inner oil area 182 to provide the damping effect, and thus the pressing speed of the lifting tube 30 when being pressed and the rebound speed when the pressure is released can be reduced.
In addition, it should be noted that, since the first floating piston 46 will always bear the gas pressure of the first gas chamber 12, the top and bottom ends of the outer peripheral surface of the first floating piston 46 are respectively provided with a sealing ring 48 abutting against the inner tube 43, as shown in fig. 1, the upper and lower sealing rings 48 are used to provide a sealing function and buffer the pressure borne by the first floating piston 46 from damage; similarly, since the control valve 52 is always subjected to the oil pressure of the first oil chamber 16, a sealing ring 56 is disposed at the top end of the outer peripheral surface of the control valve 52 and abuts against the inner tube 43, as shown in fig. 2, the sealing ring 56 provides a sealing function and buffers the pressure applied to the control valve 52 from damage.
In addition, a stopper 60 may be provided below the first floating piston 46, in this embodiment, as shown in fig. 4, the stopper 60 protrudes integrally from the inner peripheral surface of the inner tube 43, when the first air chamber 12 is inflated, the first floating piston 46 is pushed by the air to move downward in the direction of the first oil chamber 16, and when the stopper 60 is touched, the movement is stopped, and at this time, the first air chamber 12 cannot be inflated any more, so that the air pressure in the first air chamber 12 can be restricted to a certain extent, and thus the air pressure in the first air chamber 12 can be regulated.
Referring to fig. 5 and 6, a bicycle seat tube assembly 10' of embodiment 2 of the present invention is substantially identical in structure to the above-described embodiments, with the main difference being the structure of the body 70.
The body 70 is a single tube in this embodiment. The top end of the body 70 is provided with a valve 45, the bottom end of the body 70 is provided with an end plug 44, the body 70 is also provided with a first floating piston 46, the first floating piston 46 is positioned between the first air chamber 12 and the first oil chamber 16, the second air chamber 14 is positioned between the control valve 52 and the end plug 44, that is, the top end of the first oil chamber 16 is adjacent to the first air chamber 12, the bottom end of the second oil chamber 18 is adjacent to the second air chamber 14, and external air can be led into the first air chamber 12 or the air of the first air chamber 12 can be discharged to the outside through the valve 45, so that the space of the first air chamber 12 is controlled, and the shock absorbing hardness is adjusted.
As can be seen from the above, when the control valve 52 is closed and an external force is applied to the top end of the lifting tube 30, the lifting tube is pushed into the first air chamber 12, as shown in fig. 7, the volume of the first air chamber 12 is reduced, so that the air pressure of the first air chamber 12 is increased to resist the external force, and further the vibration absorbing effect is generated, and the downward movement of the lifting tube 30 can increase the volume of the second air chamber 14 at the same time, so that the air in the second air chamber 14 can provide the damping effect, and the downward pressing speed of the lifting tube 30 when being pressed and the rebound speed when the pressure is released can be slowed down.
It should be noted that, the first floating piston 46 will always bear the gas pressure of the first gas chamber 12, so the top and bottom ends of the outer peripheral surface of the first floating piston 46 are respectively provided with a sealing ring 48 abutting against the body 41, as shown in fig. 5, the upper and lower sealing rings 48 are used to provide a sealing function and buffer the pressure borne by the first floating piston 46 from damage; similarly, since the control valve 52 is always subjected to the oil pressure of the first oil chamber 16, the top end of the outer peripheral surface of the control valve 52 is provided with a sealing ring 56 abutting against the body 41, as shown in fig. 6, and the sealing ring 56 is used to provide a sealing function and buffer the pressure applied to the control valve 52 from damage.
In addition, in the present embodiment, a stop portion 60 similar to the above embodiment may be disposed below the first floating piston 46, as shown in fig. 8, the stroke of the first floating piston 46 is limited by the stop portion 60, so that the gas pressure in the first gas chamber 12 can be limited to a certain extent, so that on one hand, the gas pressure in the first gas chamber 12 can be adjusted, and on the other hand, the lifting function failure caused by the gas pressure in the first gas chamber 12 being greater than the gas pressure in the second gas chamber 14 can be avoided.
Finally, it should be noted that in the above two embodiments, the actuating member 58 is not necessarily a rod, but may be replaced by a steel wire, as shown in fig. 9, the side of which is forced by a pin member 59 to increase the strength, so that the steel wire has enough force to control the opening and closing of the control valve 52.
In summary, the bicycle seat tube assemblies 10 and 12 of the present invention are respectively provided with the first air chamber 12 and the second air chamber 14 at two opposite ends of the first oil chamber 16 and the second oil chamber 18, and the dual shock absorbing effect is provided by the gas pressure of the first air chamber 12 and the oil pressure of the second oil chamber 18 or the gas pressure of the second air chamber 14.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (14)
1. A bicycle seat tube assembly, comprising:
A seat tube;
The lifting tube is arranged on the seat tube in a vertically displaceable manner;
the shock absorbing unit is arranged in the lifting tube and can synchronously act with the lifting tube, and the shock absorbing unit is provided with a first air chamber; and
The lifting unit is arranged in the lifting tube and is provided with a control valve, an operating piece, a second air chamber, a first oil chamber adjacent to the first air chamber and a second oil chamber adjacent to the second air chamber, wherein the control valve is positioned between the first oil chamber and the second oil chamber and is controlled by the operating piece to be opened and closed, when the control valve is opened, the first oil chamber and the second oil chamber are communicated with each other, and when the control valve is closed, the first oil chamber and the second oil chamber are not communicated with each other.
2. The bicycle seat tube assembly of claim 1, wherein the shock absorbing unit has a body that is a single tube, the first air chamber is located at a top end of the body, and the second air chamber is located at a bottom end of the body.
3. The bicycle seat tube assembly of claim 2, wherein the shock absorbing unit further has a first floating piston disposed within the body between the first air chamber and the first oil chamber.
4. A bicycle seat tube assembly according to claim 3, wherein a stop is provided below the first floating piston.
5. A bicycle seat tube assembly according to claim 3, wherein the top and bottom ends of the outer peripheral surface of the first floating piston are respectively provided with a sealing ring abutting against the body.
6. The bicycle seat tube assembly according to claim 2, wherein a sealing ring abutting against the body is provided at a top end of an outer peripheral surface of the control valve.
7. The bicycle seat tube assembly of claim 2, wherein the pressure of the gas contained within the second gas chamber is greater than the pressure of the gas contained within the first gas chamber.
8. The bicycle seat tube assembly of claim 1, wherein the shock absorbing unit has a body having an outer tube and an inner tube disposed within the outer tube, the first air chamber being located at a top end of the inner tube, the second air chamber being located between the inner tube and the outer tube, the control valve being disposed at a bottom end of the inner tube, the first oil chamber being located between the inner tube and the control valve, the second oil chamber being located between the inner tube and the outer tube and between the inner tube and the control valve.
9. The bicycle seat tube assembly of claim 8, wherein the shock absorbing unit further has a first floating piston disposed within the inner tube between the first air chamber and the first oil chamber and a second floating piston disposed between the inner tube and the outer tube between the second air chamber and the second oil chamber.
10. The bicycle seat tube assembly of claim 9, wherein a stop is provided below the first floating piston.
11. The bicycle seat tube assembly according to claim 9, wherein the top and bottom ends of the outer peripheral surface of the first floating piston are respectively provided with a sealing ring abutting against the inner tube.
12. The bicycle seat tube assembly according to claim 8, wherein a sealing ring abutting against the inner tube is provided at a top end of the outer peripheral surface of the control valve.
13. The bicycle seat tube assembly of claim 8, wherein the shock absorbing unit further comprises a valve disposed at a top end of the body for controlling communication between the first air chamber and the second air chamber.
14. A bicycle seat tube assembly, comprising:
A seat tube;
The lifting tube is arranged on the seat tube in a vertically displaceable manner;
the shock absorbing unit is arranged in the lifting tube and can synchronously act with the lifting tube, and the shock absorbing unit is provided with a first air chamber; and
The lifting unit is arranged in the lifting tube and is provided with a control valve, an operating piece, a second air chamber, a first oil chamber adjacent to the first air chamber and a second oil chamber adjacent to the second air chamber, wherein the control valve is positioned between the first oil chamber and the second oil chamber and is controlled by the operating piece to open and close, when the control valve is opened, the first oil chamber and the second oil chamber are communicated with each other, so that the lifting tube can lift relative to the seat tube, and when the control valve is closed, the lifting tube can compress the first air chamber to generate shock absorption when being acted by external force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211396757.8A CN118025383A (en) | 2022-11-07 | 2022-11-07 | Bicycle seat tube assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211396757.8A CN118025383A (en) | 2022-11-07 | 2022-11-07 | Bicycle seat tube assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118025383A true CN118025383A (en) | 2024-05-14 |
Family
ID=90997318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211396757.8A Pending CN118025383A (en) | 2022-11-07 | 2022-11-07 | Bicycle seat tube assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118025383A (en) |
-
2022
- 2022-11-07 CN CN202211396757.8A patent/CN118025383A/en active Pending
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