TW201710138A - Lifting control method of bicycle seat post capable of improving the sensitivity of the seat post in the positioning process - Google Patents

Abstract

The present invention provides a lifting control method of bicycle seat post. Firstly, a valve opening command is inputted to a controller, which will actuate a motor upon receiving the command to drive an air pressure bar for generating a valve opening stroke. Then, after the air pressure bar moves along the valve opening stroke to reach a valve opening position, the lifting of the seat post can be adjusted. In the mean time, the controller will control the motor to continuously drive the air pressure bar to produce a valve closing preparation stroke in order to reduce the valve closing time. Finally, after adjusting to a predetermined position, the controller is inputted with a valve closing command. The controller, upon receiving the valve closing command, will control the motor to drive the air pressure bar to produce a valve closing stroke for moving the air pressure bar along the valve closing stroke to a valve closing position, thereby completing the positioning of the seat post. By the above method, the sensitivity of the seat post in the positioning process can be improved.

Description

Bicycle seat tube lifting control method

The invention relates to a bicycle seat tube, and in particular to a lifting control method for a bicycle seat tube.

The height of the bicycle seat cushion is not only about whether the rider can reduce sports injuries, but also riding the bicycle in the correct posture to get the most effortless effect of the pedaling action. Because each person's body is different, the seat tube is mostly equipped with a height-adjustable design, so that the height of the seat cushion can be adjusted to meet the needs of different riders.

In the conventional control method of the seat tube, the motor is first activated by a controller, and then the motor drives a gas pressure bar to generate a valve opening stroke, and then the height of the seat post can be adjusted. When the seatpost is adjusted to the appropriate height, the motor will drive the airbar to generate a valve closing stroke, and the seatpost will be positioned after the valve closing stroke is completed. However, in the foregoing control method, the time of the valve opening stroke is substantially equal to the time of the valve closing stroke, so that it is difficult to further improve the sensitivity of the seatpost during the positioning process.

The main object of the present invention is to provide a method for controlling the lifting and lowering of a bicycle seat tube, which can improve the sensitivity of the seat post during the positioning process, thereby increasing the convenience in the adjustment operation.

In order to achieve the above object, the lift control method of the present invention comprises the following steps. The first step inputs a valve opening command to the controller, and after receiving the valve opening command, the controller activates a motor to cause the motor to drive a gas pressure bar to generate an opening stroke; the second step is at the air pressure After the rod reaches the valve opening position along the valve opening stroke, the control controls the motor to drive the gas pressure rod to generate a valve closing preparatory stroke; the third step inputs a valve closing command to the controller, and the controller receives the valve closing command. The valve closing command then controls the motor to drive the gas bar to generate a valve closing stroke to cause the gas bar to reach a closed valve position along the valve closing stroke.

It can be seen from the above that the lifting control method of the present invention can effectively shorten the valve closing time of the gas pressure bar, and the sensitivity of the seat post in the positioning process can be further improved, thereby achieving the purpose of increasing the convenience of operation.

Please refer to FIG. 1 . The lifting control method of the present invention is implemented by a tube assembly 10 including a tube 12 and a seat rod that is axially displaceably disposed on the seat tube 12 . 14. A seat cushion 16 disposed at the top end of the seatpost 14, a gas pressure bar 18 disposed in the seat tube 12, and a motor 20 disposed in the seat post 14 and coupled to the gas pressure bar 18, the motor 20 having a drive shaft 22 And a bump 26 disposed on the drive shaft 22. As further shown in Figures 2 and 3, the lift control method of the present invention comprises the following steps:

Step a): When the position of the seat cushion 16 is to be adjusted, the rider inputs a valve opening command to a controller 24, and the controller 24 activates the motor 20 after receiving the valve opening command, so that the motor 20 is driven by one The drive shaft 22 drives the gas pressure bar 18 to generate an open valve stroke S1. At this time, the drive shaft 22 drives the projection 26 to start rotating. In the present embodiment, the distance of the valve opening stroke S1 is assumed to be 2.6 cm.

Step b): When one end of the bump 26 touches a micro switch 28, the gas pressure bar 18 is located at a valve opening position P1, at which time the controller 24 immediately controls the motor 20 to reverse, so that the motor 20 drives the gas pressure bar 18 A closed valve preparatory stroke S2 is generated, and the distance of the closed valve preparatory stroke S2 is assumed to be 0.6 cm in this embodiment, and the seatpost 14 can be started to be lifted and lowered to adjust the position of the seat cushion 16.

Step c): When the seat cushion 16 is adjusted to the appropriate position, the rider inputs a valve closing command to the controller 24, and after receiving the valve closing command, the controller 24 controls the motor 20 to drive the air pressure bar 18 to generate a The distance of the valve closing stroke S3 and the valve closing stroke S3 is 2.6 cm - 0.6 cm = 2.0 cm in this embodiment. Thereby, when the other end of the bump 26 touches the micro switch 28, the gas pressure bar 18 is located at the valve closing position P2, at which time the positioning of the seat post 14 is completed.

As can be seen from the above, in the conventional technique, the distance of the valve closing stroke S3 will be equal to the distance of the valve opening stroke S1. However, in the present invention, the gas pressure bar 18 immediately after the valve opening stroke S1 generates the valve closing preparation stroke S2, so that The distance of the valve closing stroke S3 will only be the distance of the valve opening stroke S1 minus the distance of the valve closing preparation stroke S2, that is, 2.6-0.6=2.0 cm, which is the valve closing distance of the conventional technology (ie, 2.0 cm) is short. Therefore, the lifting control method of the present invention can effectively shorten the valve closing time of the gas pressure bar 18, and the sensitivity of the seat post 14 during the positioning process can be further improved, thereby achieving the purpose of increasing the convenience of operation.

Finally, it should be additionally noted that the gas pressure bar 18 is continuously operated from the valve opening stroke S1 to the valve closing preparation stroke S2, and further, the total actuation stroke of one of the gas pressure bars 18 (ie, the valve opening stroke S1 and the valve closing preparation stroke S2) The length of the sum of the valve closing strokes S3 is mainly determined by the operation time of the motor 20, the number of revolutions of the drive shaft 22 of the motor 20, the rotation angle of the drive shaft 22 of the motor 20, or the axial direction of the drive shaft 22 of the motor 20. Moving distance.

10‧‧‧Seat tube assembly
12‧‧‧ seat tube
14‧‧‧ seatpost
16‧‧‧Cushion
18‧‧‧Air pressure bar
20‧‧‧Motor
22‧‧‧Drive shaft
24‧‧‧ Controller
26‧‧‧Bumps
28‧‧‧Micro Switch
S1‧‧‧Open valve stroke
S2‧‧‧Closed valve preparation stroke
S3‧‧‧Closed valve stroke
P1‧‧‧ valve opening position
P2‧‧‧Closed valve position

Figure 1 is a partial cross-sectional view of a seat tube assembly embodying the present invention. Figure 2 is a block diagram of the present invention. Fig. 3 is a schematic view showing the operation of the gas pressure bar of the present invention. Figure 4 is a schematic view showing the structure of the motor of the present invention.

18‧‧‧Air pressure bar

S1‧‧‧Open valve stroke

S2‧‧‧Closed valve preparation stroke

S3‧‧‧Closed valve stroke

P1‧‧‧ valve opening position

P2‧‧‧Closed valve position

Claims (4)

A method for controlling the lifting and lowering of a bicycle seat tube comprises: a) inputting a valve opening command to a controller, and after receiving the valve opening command, the controller starts a motor to cause the motor to drive a gas pressure bar to generate an opening The valve stroke; b) after the gas pressure bar reaches the valve opening position along the valve opening stroke, the controller controls the motor to drive the gas pressure bar to generate a valve closing preparatory stroke; and c) inputs a closed valve to the controller The valve command, after receiving the valve closing command, the controller controls the motor to drive the gas bar to generate a valve closing stroke, so that the gas bar reaches a closed valve position along the valve closing stroke. The method for controlling the lifting and lowering of a bicycle seat tube according to claim 1, wherein the length of the total actuation stroke of the gas pressure bar depends on the running time of the motor, the number of rotations of one of the driving shafts of the motor, and one of the motors. The rotation angle of the shaft or the axial movement distance of one of the driving shafts of the motor, the total actuation stroke being the sum of the valve opening stroke, the valve closing preparation stroke, and the valve closing stroke. The method for controlling the lifting and lowering of a bicycle seat tube according to claim 1, wherein the valve opening stroke to the valve closing preparation stroke is continuous operation. The method for controlling the lifting and lowering of a bicycle seat tube according to claim 1, wherein the motor has a driving shaft and a protrusion disposed on the driving shaft, and when the one end of the protruding block touches a micro switch, the air pressure rod Located in the valve opening position, when the other end of the bump touches the micro switch, the gas bar is located at the valve closing position.