TWM548653U - Seatpost with shock absorption structure - Google Patents

Description

Seat tube with suspension structure

The present invention relates to a bicycle seat tube, and more particularly to a bicycle seat tube having a suspension structure.

In order to fit the body of different users, the bicycle has been designed with various adjustable structures. For example, a telescopic seat tube is provided under the seat cushion of the bicycle, so that users of different heights and legs can adjust the seat tube according to requirements. Length, and then adjust the height of the seat cushion to achieve the best riding posture. In order to enable the seat tube to adjust the length, one of the prior art is to install a gas pressure bar in the seat tube, the air pressure bar is connected with the seat cushion, and the rider can trigger the air pressure bar to expand and contract and actuate the seat by pulling the relevant control component. The tube is telescoped to achieve the purpose of adjusting the height of the seat cushion.

However, although the above-described prior art seat tube can adjust the seat tube length by the gas pressure bar and control the speed when adjusting the seat tube length, the seat tube of the prior art cannot provide a shock absorbing effect, and thus often causes the rider to The feeling of discomfort is directly felt by the seat cushion and the seat tube, which is unfavorable for long-time riding, so the bicycle seat tube of the prior art still needs further improvement.

In view of the problems existing in the prior art, the purpose of the present invention is to provide a seat tube for a bicycle, which is provided with a suspension structure inside, and the suspension structure can also allow bicycle riders of different weights to adjust and avoid according to preferences. Shock effect for optimum comfort.

In order to achieve the above-mentioned creative purpose, the present invention adopts a technical means for a seat tube having a suspension structure comprising: a lower tube having an upper open end and a lower end; and an upper tube axially movable The lower end of the upper tube extends into the lower tube, and the upper end of the upper tube protrudes outside the lower tube; a gas pressure rod is disposed under the lower tube In the tube and the upper tube, a lower end of the gas pressure rod is connected to a lower end portion of the lower tube, and an upper end of the gas pressure rod is directed toward an upper end of the upper tube; a piston is disposed in the upper tube and located at the gas pressure rod Between the upper end and the upper end of the upper tube, and the piston is fixed to the upper end of the gas pressure bar; a gas nozzle is fixed in the upper end of the upper tube, and a gas chamber is formed between the gas nozzle and the piston, The air chamber is filled with compressed air that selectively closes or opens the air chamber.

The seat tube having the suspension structure as described above further includes an elastic member disposed in the air chamber, and opposite ends of the elastic member respectively abut against the piston and the air nozzle.

The seat tube having the suspension structure as described above, wherein the elastic member is a block-shaped elastic body.

The seat tube having the suspension structure as described above, wherein the material of the elastic body is polyurethane.

The seat tube having the suspension structure as described above, wherein the elastic member is a compression spring.

The advantage of the present invention is that when the seat cushion installed at the upper end of the upper tube is subjected to a downward pressing force, the upper tube and the air nozzle are driven to move axially downward, so that the compressed gas and the elastic member in the air chamber The upper tube and the gas nozzle are reversely pushed by being compressed, thereby achieving the shock absorbing effect of buffering the vibration of the seat cushion and the lower part, so as to reduce the discomfort of the rider due to the vibration of the vehicle body, and further, Turning the nozzle on or off allows the different riders to adjust the gas pressure in the chamber to suit the preference or demand to obtain the best comfort during riding.

The technical means adopted by the present invention for achieving the intended purpose of creation are further explained below in conjunction with the drawings and the preferred embodiments of the present invention.

Referring to FIGS. 1 and 2, the seat tube of the present invention having a suspension structure includes a lower tube 11, an upper tube 12, a gas pressure rod 20, a piston 30, a gas nozzle 40, and an elastic member 50, 50A.

The lower tube 11 is sleeved with the upper tube 12, and the lower tube 11 has an upper open end and a lower end portion 111. The upper tube 12 is axially movably disposed at an open end of the lower tube 11. The upper tube 12 has a lower end and an upper end 121. The lower end of the upper tube 12 extends into the lower tube 11. The upper end 121 of the upper tube 12 extends outside the lower tube 10, and a bicycle seat cushion is installed. At the upper end 121 of the upper tube 12.

The gas pressure rod 20 is disposed in the lower tube 11 and the upper tube 12. The gas pressure rod 20 has an upper end 21 and a lower end 22, and the lower end 22 of the gas rod 20 is located in the lower tube 11 and is connected to the lower tube 11 Below the end portion 111, the upper end 21 of the gas pressure bar 20 is located in the upper tube 12 and faces the upper end 121 of the upper tube 11.

Referring to FIG. 3, the piston 30 is disposed in the upper tube 12 between the upper end 21 of the gas rod 20 and the upper end 121 of the upper tube 12, and the piston 30 is fixed to the upper end of the gas rod 20. twenty one.

The air nozzle 40 is fixed in the upper end 121 of the upper tube 12, and a gas chamber 13 is formed between the air nozzle 40 and the piston 30. The air chamber 13 is filled with compressed air, and the air nozzle 40 can be selectively closed. Or open the gas chamber 13.

The elastic members 50, 50A are disposed in the air chamber 13, and opposite ends of the elastic members 50, 50A abut against the piston 30 and the air nozzle 40, respectively. In the embodiment of the present invention as shown in FIG. 3, the elastic member 50 can be a block-shaped elastic body, and for better use, the material of the elastic body can be commonly known as the superior glue. Polyurethane. Referring further to FIG. 4, in another embodiment of the present invention, the elastic member 50A can be a compression spring.

With the above-described design, when the seat cushion mounted on the upper end 121 of the upper tube 12 is subjected to a downward pressing force to drive the upper tube 12 and the air nozzle 40 to move axially downward, the air chamber 13 The compressed gas and the elastic members 50, 50A are compressed to push the upper tube 12 and the gas nozzle 40 in reverse, thereby absorbing the shock absorber effect of damping the upper and lower vibration of the seat cushion, so as to reduce the rider's feeling of the vehicle. The discomfort caused by body vibration. Among them, by opening or closing the air nozzle 40, different riders can also adjust the gas pressure in the air chamber 13 according to preference or demand to obtain the best comfort during riding.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Although the present invention has been disclosed above in the preferred embodiments, it is not intended to limit the present invention, and any Any simple modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are still within the scope of the present invention.

11‧‧‧Under the tube
111‧‧‧Bottom
12‧‧‧Upper tube
121‧‧‧Upper
13‧‧‧ air chamber
20‧‧‧Air pressure bar
21‧‧‧Upper
22‧‧‧Bottom
30‧‧‧Piston
40‧‧‧ gas nozzle
50, 50A‧‧‧ elastic parts

Figure 1 is a perspective view of the present invention. Figure 2 is a side cross-sectional view of the present invention. Figure 3 is an enlarged side elevational view of the present invention. Figure 4 is an enlarged side elevational view of another embodiment of the present invention.

12‧‧‧Upper tube

121‧‧‧Upper

13‧‧‧ air chamber

20‧‧‧Air pressure bar

21‧‧‧Upper

30‧‧‧Piston

40‧‧‧ gas nozzle

50‧‧‧Flexible parts

Claims (5)

A seat tube having a suspension structure, comprising a lower tube, an upper tube, a gas pressure bar, a piston and a gas nozzle, wherein: the lower tube has an upper open end and a lower end; the upper tube can move axially Passing through the open end of the lower tube, a lower end of the upper tube extends into the lower tube, and an upper end of the upper tube protrudes outside the lower tube; the pneumatic rod is disposed in the lower tube In the upper tube, a lower end of the gas pressure rod is connected to a lower end portion of the lower tube, and an upper end of the gas pressure rod is opposite to an upper end of the upper tube; the piston is disposed in the upper tube and is located at an upper end of the gas pressure rod and the upper tube Between the upper ends, the piston is fixed to the upper end of the gas pressure bar; the gas nozzle is fixed in the upper end of the upper pipe, and a gas chamber is formed between the gas nozzle and the piston, and the gas chamber is filled with compressed air. The gas nozzle can selectively close or open the gas chamber. The seat tube having the suspension structure according to claim 1, further comprising an elastic member disposed in the air chamber, the opposite ends of the elastic member respectively abutting the piston and the air nozzle. The seat tube having the suspension structure according to claim 2, wherein the elastic member is a block-shaped elastic body. The seat tube having the suspension structure according to claim 3, wherein the elastic material is made of polyurethane. A seat tube having a suspension structure according to claim 2, wherein the elastic member is a compression spring.