TWI742975B - Exhaust valve device for bicycle lifting seat tube - Google Patents

Abstract

An exhaust valve device for a bicycle lifting seat tube is mainly located on an air chamber interactively controlled by a piston rod unit in the seat tube, and is provided with an air valve seat. The air valve seat is provided with at least one air hole to make the air chamber The inside of the valve communicates with the outside; a valve plate is provided, the valve plate is set on the outside of the valve seat, and is attached to the valve seat up and down and concentrically pivoted. The valve plate matches the air hole The setting position is provided with an outlet communicating with the air hole. The center of the valve plate facing away from the valve seat end is connected to a center rod. The drive outside the seat tube rotates on the air valve seat in situ to control the air hole to communicate with or block the outlet; and a limit unit is used to control the air hole to communicate with the outlet or block the air valve The position where the plate displacement stops. In this way, when adjusting the gas pressure, there is no need to disassemble the seat tube, and the excess gas in the seat tube can be exhausted from the outside of the seat tube.

Description

Exhaust valve device for bicycle lifting seat tube

The invention relates to an exhaust valve device for a bicycle lifting seat tube, especially an exhaust valve device that can discharge excess air in the seat tube from outside the seat tube without disassembling the seat tube to adjust the gas pressure.

Press, the bicycle lifting seat tube has a built-in piston rod unit, so that the seat tube can be adjusted up and down. The piston rod unit has a cylinder barrel and a piston extending into the cylinder barrel. The two ends of the cylinder barrel are sealed with seals, and oil and gas (such as nitrogen) are placed inside. Because the specific gravity of gas is smaller than that of oil, the gas will be in place. Above the oil. The use of the aforementioned seals for a long time will result in the loss of poor air tightness due to the aging of the parts, which will reduce the pressure of the high-pressure gas in the cylinder. If the reduced gas pressure is not resolved, people sitting on the seat tube will feel uncomfortable sinking for a while and risk an unstable center of gravity. Conventionally, to solve the above-mentioned problems, it is generally handled by disassembling the seat tube, adjusting the gas pressure, and then reassembling. This processing mode of disassembling the seat tube and then assembling it is not only labor-intensive, but also requires professionals to handle it, which is quite inconvenient.

In view of the above-mentioned shortcomings in the operation of the exhaust of the conventional seat tube, the inventor improved the design, and thus the present invention was born.

The main purpose of the present invention is to provide a bicycle lifting seat tube exhaust valve device that can adjust the gas pressure in the seat tube from outside the seat tube without disassembling the seat tube.

The main feature of the present invention is that an air valve seat is arranged at the end of the cylinder air chamber of the lifting seat tube, and the air valve seat is provided with an air hole to communicate the inside of the air chamber with the outside. An air valve plate is arranged, and the air valve plate is arranged on the outside of the air valve seat to be attached to the air valve seat and pivotally connected with the same concentric circle. The valve plate is equipped with an outlet communicating with the air hole at the position of the valve plate. The center of the valve plate is connected with a central rod that extends toward the back of the air chamber, and an adjustment button is arranged outside the seat tube to make The valve plate can be adjusted by the adjusting button to rotate in place on the valve seat to control the connection or blockage of the air hole and the outlet. When the gas pressure in the cylinder is corrected, the adjusting button controls the rotation of the center rod to drive the valve plate to rotate. The air hole opens and compresses the seat tube, so that part of the gas is discharged from the air hole. When the gas in the cylinder reaches a predetermined gas pressure, the air hole is blocked by rotating the adjustment knob in the opposite direction, so that there is no need to disassemble the seat tube. The effect of the gas pressure in the seat tube can be adjusted.

The forward or reverse displacement limit of the above-mentioned valve plate is controlled by a limit unit, which limits the rotation of the valve plate from one direction to the limit and stops. At this time, the air hole communicates with the outlet; when the valve plate is reversed When the rotation reaches the limit, it stops. At this time, the air holes are blocked by the valve plate.

Regarding the technical means and structure adopted by the present invention in order to achieve the above-mentioned effects, the following embodiments are described as follows.

1 to 4, the bicycle lifting seat tube 1 of the embodiment of the present invention mainly includes an inner tube 10, an outer tube 20, and a piston rod unit 30. One end of the inner tube 10 extends into the outer tube 20, and the piston rod unit 30 is arranged in the internal space separated by the inner tube 10 and the outer tube 20 to support the inner tube. The piston rod unit 30 is provided with a cylinder barrel 31, the cylinder barrel 31 is provided with a piston 32, the cylinder barrel 32 is located above the piston 32 as a gas chamber 310, the gas chamber 310 is filled with gas 33, and the piston rod unit 30 Interaction and control (a conventional technology). The outer tube 20 located below the piston 32 is filled with oil 34 (see FIG. 3).

The main improvements of the present invention are:

An air valve seat 40 (as shown in FIG. 4) is provided. The air valve seat 40 is located at the top of the air chamber 310 of the cylinder barrel 31. The air valve seat 40 is provided with a plurality of air holes 41 to make the inside of the air chamber 310 communicate with the outside. . The air hole 41 is provided with an airtight ring 42 at the edge of the hole at the outer end of the cylinder barrel 31.

An air valve plate 50 (as shown in FIG. 4) is provided. The air valve plate 50 is arranged on the outside of the air valve seat 40, is attached to the air valve seat 40 up and down, and is pivotally connected in concentric positions. The concentrically pivoted structure is connected with a shaft 51 protruding from the center of the valve plate 50 facing the valve seat 40. The center surface of the valve seat 40 matches the shaft 51 with a circular groove 43. The shaft 51 is embedded in the circular groove 43 to form a concentric pivot connection, and the bottom surface of the valve plate 50 is attached to the top surface and bottom of the valve seat 40. The valve plate 50 is equipped with a plurality of outlets 52 communicating with the air hole 41 at the position where the valve plate 50 matches the air hole 41. An adjustment button 54 is provided outside the seat tube 1 (inner tube 10) so that the valve plate 50 can be driven by the adjustment button 54 to rotate in situ on the valve seat 40 with the shaft 51 as a pivot to control the air hole 41 and The outlet 52 communicates or is blocked.

There is a limit unit 60 (as shown in Figure 4), which is arranged between the valve seat 40 and the valve plate 50, and is used to limit the rotation of the valve plate 50 to a limit and stop. At this time, the air hole 41 communicates with the outlet 52 ; When the valve plate 50 reversely rotates to the limit and then stops, the air hole 41 and the outlet 52 are misaligned and blocked by the bottom surface of the valve plate 50. The limiting unit 60 includes an arc-shaped hole 61, a fixing hole 62 and a bolt 63. The arc-shaped hole 61 is provided on the air valve plate 50 and is made with the center of the air valve plate 50 as the center of the circle; the fixed hole 62 is provided on the air valve seat 40 and corresponds to the arc-shaped hole 61; The bolt 63 is inserted into the arc-shaped hole 61 and the bottom end is fixed to the fixing hole 62, so that the bolt 63 is fixed. The two ends of the arc-shaped hole 61 are set so that when the bolt 63 touches one end, the air hole 41 communicates with the outlet 52 (as shown in Figures 5 and 6); when the bolt 63 touches the other end of the arc-shaped hole 61, The air hole 41 is misaligned with the outlet 52 and the air hole 41 is blocked (as shown in Figs. 8 and 9).

When correcting the gas pressure in the gas chamber 310, the center rod 53 is controlled to rotate by the forward adjustment knob 54 to drive the valve plate 50 to rotate synchronously. That is, the air hole 41 is opened to the air hole 41 (Figures 5 and 6), and the seat tube 1 (inner tube 10) is compressed as shown in Figure 7, so that part of the gas 33 in the air chamber 310 is passed through the air hole 41 and the outlet 52. Squeeze out. When the gas 33 in the gas chamber 310 reaches a predetermined gas pressure, the adjustment knob 54 is rotated in the reverse direction and turned until the other end of the arc-shaped hole 61 hits the plug 63. At this time, the gas hole 41 and the outlet 52 are misaligned and blocked and closed. , That is, the gas pressure adjustment is completed.

The above-mentioned improvement of the present invention does not need to disassemble the seat tube 1, and the gas pressure in the seat tube 1 can be adjusted from outside the seat tube 1, which is more advanced than the prior art.

In summary, the present invention is not only novel, but also industrially usable and progressive. It is convenient to file an invention patent application in accordance with the law.

1: seat tube 10: inner tube 20: Outer tube 30: Piston rod unit 31: Cylinder 32: Piston 310: Air Chamber 33: Gas 34: oil 40: Air valve seat 41: Stoma 42: airtight ring 43: round groove 50: Valve plate 51: Shaft 52: Exit 53: Center pole 54: adjustment button 60: limit unit 61: curved hole 62: fixed hole 63: Bolt

Figure 1 shows a combined perspective view of an embodiment of the present invention. Figure 2 shows a partial exploded view (1) of an embodiment of the present invention. Figure 3 is a combined cross-sectional view of an embodiment of the present invention. Figure 4 shows a partial exploded view (2) of the embodiment of the present invention. Fig. 5 is a structural diagram of an open air hole according to an embodiment of the present invention. Fig. 6 is a cross-sectional view taken in the direction of 6s-6s in Fig. 5. Fig. 7 is an action diagram of compressing the seat tube to adjust the gas pressure after the air hole is opened in the embodiment of the present invention. Fig. 8 is a structural diagram showing a blocked state of air holes according to an embodiment of the present invention. Fig. 9 is a cross-sectional view taken in the direction of 9s-9s in Fig. 8.

10: inner tube

40: Air valve seat

41: Stoma

42: airtight ring

43: round groove

50: Valve plate

51: Shaft

52: Exit

53: Center pole

54: adjustment button

60: limit unit

61: curved hole

62: fixed hole

63: Bolt

Claims (3)

An exhaust valve device for a bicycle lifting seat tube is mainly located on an air chamber interactively controlled by a piston rod unit in the seat tube, and is provided with an air valve seat. The air valve seat is provided with at least one air hole to make the air chamber The inside of the valve communicates with the outside; a valve plate is provided, the valve plate is set on the outside of the valve seat, and is attached to the valve seat up and down and concentrically pivoted. The valve plate matches the air hole The setting position is provided with an outlet communicating with the air hole, the back of the valve plate is connected to the center of the valve seat end with a center rod, the center rod penetrates the seat tube, so that the valve plate passes through the center The rod is driven by the outside of the seat tube to rotate in place on the air valve seat to control the air hole to communicate or block the outlet. The air valve plate faces the center of the air valve seat and has a shaft projecting. The center surface of the valve seat matches the shaft member with a circular groove, and the shaft member is embedded in the circular groove so that the valve plate and the valve seat are pivotally connected in a concentric position; and a limit unit is provided. , Used to control the stop position of the valve plate when the air hole communicates with the outlet or is blocked. The exhaust valve device for a bicycle lifting seat tube according to claim 1, wherein the limiting unit includes an arc hole, a fixing hole and a bolt; the arc hole is arranged on the air valve plate, It is made with the center of the valve plate as the center of the circle; the fixed hole is arranged on the valve seat and corresponds to the arc-shaped hole; the bolt is inserted into the arc-shaped hole and the bottom end is connected to the The fixing hole is fixed; the two ends of the arc hole are set so that when the bolt touches one end, the air hole communicates with the outlet; when the bolt touches the other end of the arc hole, the air hole It is misplaced with the outlet and the air hole is blocked. The exhaust valve device for a bicycle lifting seat tube according to claim 2, wherein the edge of the air hole located at the end of the air chamber is provided with an airtight ring.

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