WO2018074730A1

WO2018074730A1 - Variable seatpost

Info

Publication number: WO2018074730A1
Application number: PCT/KR2017/009351
Authority: WO
Inventors: 이명아
Original assignee: 이명아
Priority date: 2016-10-17
Filing date: 2017-08-28
Publication date: 2018-04-26
Also published as: KR101744599B1

Abstract

The present invention provides a variable seatpost comprising: a body part comprising a moving pipe which is formed inside an external pipe, is combined with a lifting holder to be raised or lowered, and has a long hole formed on the bottom thereof and a locking key formed on the top thereof, and a fixed pipe which is formed inside the moving pipe, is fixedly combined with a lower part of the long hole as a fixing pin is combined with the long hole formed on the bottom thereof, and has a locking chuck with a ball installed on the top thereof; a cap part comprising an external cap which is combined with the outside of the top of the external pipe, and a connection ring which is combined with the outer circumference of the external pipe, and has a connecting hole formed therein so as to be connectable with a lever part; a piston part including an inner pipe which is raised or lowered to the inside or outside of the body part, a top bolt, a fixing shaft which is coupled to the top bolt and has a plurality of locking grooves formed along a length direction such that the ball installed in the locking chuck is fixedly locked in the locking grooves, and an extension spring for adjusting the length; a seat fastening part for fastening a seat; a connection part comprising an inner cable which is arranged along a cable hole and of which the bottom is combined with the lifting holder, and a connecting member which is installed by being inserted into the connecting hole and combined with the top of the inner cable; and the lever part comprising the lifting member which is raised or lowered by the operation of a lever.

Description

Variable seatpost

The present invention relates to a seatpost of a bicycle, and more particularly, to a variable seatpost that can be freely adjusted and stretched and fixed in length to adjust the height of the bicycle saddle.

In general, in the bicycle, the height of the saddle should be adjusted to the user's physical condition, so that it can be stably driven in a comfortable position, and the sole of the user is completely grounded on the ground even when stopping or getting on and off. You can correct it and use it safely.

As such a prior art, a technology related to "height adjustment device for bicycle saddle, table, chair seat, etc." is disclosed in Republic of Korea Utility Model Publication No. 20-0298219.

However, such a conventional hydraulic or pneumatic height adjusting device is complicated in configuration, requires a lot of force when adjusting the height, and is inconvenient to stretch and fix the height as desired by the user, resulting in poor usability and convenience, and incorrect operation. Of course, since the impact resistance is weak, the cylinder device is often damaged by external shock, and when the saddle or the seat is set at the highest level when the height is adjusted, the valve does not press due to the vacuum or vapor generated by the temperature difference. Malfunctions are a problem. In addition, when the user lifts and transports the bicycle by holding the bicycle saddle, there is a problem that the cylinder of the height adjusting device connected to the saddle is pulled without supporting the load.

In addition, there is a device for adjusting the height of the saddle by pulling the lever installed on the handle of the bicycle in the prior art, but when the saddle is elevated during height adjustment, the connecting line is moved together, thereby causing the interference with the bicycle members There is a problem that height adjustment is cumbersome.

In addition, the maximum variable length of the seatpost can not be adjusted to suit the use environment of the bicycle and the user's physical condition, there is a problem inconvenient use.

The present invention has been made to solve all the above-described problems, and when the height is adjusted, the cable connected to the lever does not move together and does not occur interference can be used conveniently, selectively connecting the lever to the side or bottom of the outer pipe Its purpose is to extend the usability, and to provide a variable seatpost that can be adjusted to the maximum variable length according to the use environment of the bicycle and the user's physical condition by rotating the top bolt.

In order to solve the above problems, the present invention, the outer pipe having an insertion hole formed in the lower end, the support pipe is installed in the inner side of the outer pipe and the lower end of the extension spring is formed, the lower end of the outer pipe is inserted into the compression spring Spring grooves are formed and the lower end of the inner cable is fixed by a fixed bolt and the lifting holder is installed to be provided with a moving space on the lower side of the elevating holder, formed inside the outer pipe is combined with the elevating holder to move up and down A long hole is formed at the bottom and a moving pipe having a locking key formed at the top, and a fixing pin is coupled to a short hole formed at the inner side of the moving pipe and fixed at the bottom of the long hole, and a locking chuck having a ball mounted at the top thereof. A body part including a fixed pipe formed; A cap part including an outer cap coupled to an upper end of the outer pipe, a coupling ring coupled to an outer circumference of the outer pipe and having a connection hole formed therein to connect a connection part and a lever part; An inner pipe inserted into the outer pipe to be lifted into and out of the body portion, an upper bolt coupled to an upper inner side of the inner pipe, and installed on an inner side of the inner pipe and fastened to the upper bolt, and a plurality of locking grooves along a length direction Is formed and the piston shaft including a fixed shaft, the ball mounted to the locking chuck is fixed to the locking groove, the length adjustment extension spring installed inside the inner pipe; A saddle fastening part coupled to an upper end of the inner pipe and having a saddle fastened to an upper part thereof; An inner cable disposed along a cable hole formed in a longitudinal direction between the outer pipe and the inner pipe and having a lower end coupled to a lifting holder, and a connection member inserted into the connection hole and coupled to an upper end of the inner cable. Connection; And a lever unit including a lever, an external cable connected to the lever, and a lifting member coupled to the external cable to be inserted into a connection hole or an insertion hole and lifted by an operation of the lever. to provide.

According to the present invention, when the height is adjusted, the cable connected to the lever does not move together and does not cause interference, and can be conveniently used. The lever can be selectively connected to the side or the bottom of the outer pipe to expand the usability. By rotating the bolt has the effect of adjusting the maximum variable length to match the structure of the bicycle and the user's physical condition.

In addition, since the lock key can be locked or opened only by lever operation, the length and extension of the lock key can be freely adjusted. Therefore, the operation is convenient, and it can respond quickly in various use environments, and has excellent usability and convenience. .

1 is a view showing the configuration of the body portion according to an embodiment of the present invention.

2 is a view showing a configuration of a cap unit according to an embodiment of the present invention.

3 is a view showing the configuration of the piston unit according to an embodiment of the present invention.

4 is a view showing the configuration of the saddle fastening portion according to an embodiment of the present invention.

5A and 5B are views illustrating a configuration of a connection part and a lever part according to an embodiment of the present invention.

Figure 6a is a view when the variable seat post is folded according to an embodiment of the present invention, Figure 6b is a view showing the height of the variable seat post lever operation in accordance with an embodiment of the present invention.

7A is a view when the variable seatpost is folded according to another embodiment of the present invention, and FIG. 7B is a view in which the height of the variable seatpost according to another embodiment is increased when the lever is operated.

Figure 8 is to adjust the variable seatpost to the maximum variable length by rotating the top bolt according to an embodiment of the present invention.

9 is an exemplary view illustrating a bicycle to which an embodiment of the present invention is applied.

Hereinafter, with reference to the drawings will be described in detail with reference to specific embodiments for carrying out the variable seat post according to the present invention.

Variable seatpost (P) according to the present invention is convenient to be able to freely adjust the expansion and contraction of the length to adjust the height of the bicycle saddle, body portion 100, cap portion 200, piston portion 300, The saddle fastening part 400, the connection part 500, and the lever part 600 are formed.

Referring to FIG. 1, the body part 100 has an outer pipe 110 forming an appearance and an insertion hole 111 penetrates through a lower end of the outer pipe 110 to form an inner portion of the outer pipe 110. In communication with. In this case, when not inserted into the insertion hole 111, the foreign matter prevention cap may be inserted into the insertion hole 111.

The support pipe 120 is installed inside the outer pipe 110, and the support pipe 120 has a height of approximately 3/4 of the height of the outer pipe 110, and the piston part 300. The lower end of the extension spring 340 is supported.

A lifting holder 130 is formed at an inner lower end of the outer pipe 110, a spring groove is formed at an upper portion of the lifting holder 130, and a compression spring 131 is inserted into the spring groove and installed. Holder 130 has a lower end of the inner cable 510 is coupled through, the inner cable 510 is fixed by the fixing bolt 132 in the lower inner side of the elevating holder (130).

The outer pipe 110 is provided with a moving space 140 in which the lifting holder 130 can move up and down inside the lifting holder 130.

A moving pipe 150 is formed in the inner side of the outer pipe 110 along a length direction, and the lower portion of the moving pipe 150 is coupled to the lifting holder 130 in accordance with the lifting of the lifting holder 130. Go up and down together. The moving pipe 150 has a long hole 151 is formed at the bottom, the locking key 152 is connected to the top.

A fixed pipe 160 is formed along the longitudinal direction of the moving pipe, and a short hole 161 is formed at a lower end of the fixed pipe 160, and a fixing pin 162 is coupled to the short hole 161. The fixing pin 162 is also fixedly coupled to the lower portion of the long hole 151. A lock chuck 163 having one or more balls 170 is formed at an upper end of the fixed pipe 160, and a lock hole is formed through the lock chuck 163 to allow the ball 170 to flow. The lower end of the locking chuck 163 is provided with a locking step 164 to limit the rising of the limit ring 332 of the lower end of the fixed shaft 330 to be described later to limit the rise of the piston unit 300 to prevent separation do.

At this time, the locking key 152 is thin in the upper portion, the lower portion is formed to be thicker than the upper portion is formed so as to more protrude inward, whereby the lower portion of the locking key 152 is engaged with the lock chuck 163 The ball 170 is pressed by the locking key 152 to cover the one or more lock holes formed in the locking chuck 163 and the device is fixed by the locking groove 331 of the fixing shaft 330. It becomes a closed state. In addition, when the elevating holder 130 moves downward by operating the lever unit 600, the moving pipe 150 is lowered in the length range of the long hole 151, accordingly the moving pipe 150 An upper portion of the locking key 152 formed at the upper end of the locking key 152 moves downward to reach the locking chuck 163 and the ball 170 pressed by the lower portion of the locking key 152 is engaged in the locking groove 331. The device is in an open state by being moved out toward the lock key 152 simultaneously with the lock hole of the lock chuck 163.

In addition, a cable hole is formed along the longitudinal direction between the outer pipe 110 and the inner pipe 310 to be described later, and the inner cable 510 to be described later is installed along the cable hole.

Referring to Figure 2, the cap portion 200 is coupled to the outer cap 210 is coupled to the upper outer side of the outer pipe 110, the outer cap 210 is a packing 211 is installed on the inside foreign matter It is preferable to prevent the inflow of the inner pipe 310 of the piston unit 300 to be in close contact.

A connection ring 220 is coupled to an outer circumference of the outer pipe 110 below the outer cap 210, and the connection ring 220 has a connection hole 221 formed therein so that the connection part 500 and the lever are connected to each other. The unit 600 becomes connectable.

Referring to FIG. 3, the piston part 300 emerges as the inner pipe 310 is inserted between the outer pipe 110 and the support pipe 120 to move up and down the body part 100. The upper bolt 320 is coupled to the upper inner side of the inner pipe 310, and a fixing shaft 330 is installed inside the inner pipe, and the fixing shaft 330 has an upper end at the upper bolt 320. A fastening and a plurality of locking grooves 331 are formed along the longitudinal direction and the ball 170 mounted in the lock hole of the locking chuck 163 is fixed to the locking groove 131, the inside of the inner pipe An extension spring 340 for length adjustment is installed on the outside of the fixed shaft 330, and the extension spring 340 is supported by the upper end of the head of the upper bolt 320 and the lower end is supported by the upper end of the support pipe 120. Alternatively, the piston unit 300 is elevated while being extended.

At this time, the inner pipe 310 has a length groove 311 is formed in the longitudinal direction on the lower outer peripheral surface, the length groove 311 is provided with an intermittent pin 312 to control the rotation, thereby the piston portion 300 Rotation is interrupted.

8, the upper end of the fixing shaft 330 is screwed into the upper side of the upper bolt 320 to adjust the maximum variable length by rotating the upper bolt 320 using a tool from above. Therefore, it can be conveniently used according to the structure of the bicycle and the physical condition of the user.

In addition, the fixed shaft 330 has a limit ring 332 is formed at the lower end, while the fixed shaft 330 is raised during the operation of the lever unit 600, the limit ring 332 is the upper locking chuck 163 may be caught by the locking step 164 of the lower end to limit the rise of the piston 300, it is possible to prevent the departure of the piston 300.

Referring to Figure 4, the saddle fastening portion 400 is coupled to the upper outer side of the inner pipe 310, the saddle is fastened to the top, the coupling bolt 420 for fastening the saddle is coupled in the longitudinal direction Bolt holes 410 are formed, the plurality of bolt holes 410 may be formed to increase the firmness of the saddle fastening.

Referring to FIG. 5A, an inner cable 510 is disposed inside the outer pipe 110 along the cable hole, and a connection member 520 is connected to the connection ring 220. Inserted into the 221, the inner cable 510 is the upper end is coupled to the connection member 520 is fixed by a fixed bolt 521, the lower end is coupled through the lifting holder 130 through the lifting holder The pressure is fixed to the fixing bolt 132 inside the 130.

The lever unit 600 rotates the lever 610 by a user, or releases the force applied to the lever 610 to return it to its original state.

At this time, the lever 610 has a first ring 611 and the second body 612 having a half ring shape is fastened through the connecting bolt 619 and the shaft pin 616 on each side to have a single ring shape. It is made, the intermittent groove 613 having a rounded shape is formed on one side to which the shaft pin 616 is fastened.

The lever piece 614 is rotatably connected to the lever 610 by a predetermined angle, and the protruding piece 615 is connected to the shaft pin 616 so as to protrude outward, and when the lever piece 614 is rotated. The protruding piece 615 is in contact with the inner wall surface of the intermittent groove 613 while rotating the shaft pin 616 to the shaft is intermittent rotation.

That is, the protruding piece 615 has a rounded shape and is formed to have a smaller area than the intermittent groove 613 so as to be spaced a predetermined distance between the protruding piece 615 and the inner wall surface of the intermittent groove 613. A space is formed, and the rotation of the lever piece 614 is interrupted while the protrusion piece 615 rotates in the intermittent groove 613 while a part of the rounded surface contacts the inner wall surface of the intermittent groove 613. .

The first body 611 is provided with a connection groove 611a formed in one side, the connection groove 611a is inserted into the connection port 618 is formed with a connection hole, the connection hole is connected to the external cable 620 One end of the covered cover is inserted and connected. A through hole 611b is formed in communication with one side of the connection groove 611a, and one end of the external cable 620 passes through the through hole 611b. The lever 120 has a connection groove 617 formed at an upper portion thereof, and one end of the external cable 620 is inserted into the connection groove 617 to be fixedly connected to the lever piece 614.

In addition, one end of the lever 610 and the external cable 620 is connected, the support 630 is connected to the other end of the external cable 620. Here, the outer circumference of the outer cable 620 is covered with a cover to protect the outer cable 620 from damage, but both ends of the outer cable 620 is covered with a cover for coupling with other components It is preferable not to.

The support 630 has a lifting hole 631 formed inside, and the lifting member 640 connected to the external cable 620 is inserted into the lifting hole 631 so as to be liftable, and the lifting member 640. The fixing bolt 641 is installed on the inner side of the external cable 620 to fix the pressure. When the lever 610 is rotated, the elevating member 640 is elevated in the elevating hole 631, the elevating hole 631 is interposed with a guide spring 632, and the elevating member 640 is After descending, the guide spring 632 is guided smoothly to the original position.

Meanwhile, the lever part 600 may be selectively inserted into the connection hole 221 of the connection ring 220 or the insertion hole 111 of the lower end of the outer pipe 110.

First, referring to FIGS. 6A and 6B, when the lever part 600 is inserted into the connection hole 221 of the connection ring 220, the connection member 520 may be connected to an upper portion of the elevating member 640. When the elevating member 640 is raised and lowered by the operation of the lever 610, the elevating member 640 is fixed when the external cable 620 is pulled by rotating the lever piece 614. As it descends, the connecting member 520 coupled thereto is lowered in the connection hole 221, and the compression spring 131 that is compressed while the inner cable 510 that is maintained in the cable hole is loosened is somewhat loosened. It extends and descends the elevating holder 130 in the moving space 140. At this time, the movable pipe 150 coupled with the elevating holder 130 is lowered within the range of the long hole 151, thereby locking. The key 152 is also lowered so that the upper portion of the locking key 152 is lowered The ball 170, which has been pressed by the lower portion of the locking key while reaching the locking chuck 163, exits from the locking groove 331 of the fixed shaft 330, becomes open, and is compressed in the open state. As the extension spring 340 is extended, the upper bolt 320 is pushed upward, and the inner pipe 310 of the piston part 300 coupled to the upper bolt 320 is fixed to the shaft 330. And the height of the seatpost can be adjusted. At this time, the user releases the force applied to the lever 610 in the state of adjusting the height to suit the user's physical condition while pressing the saddle down or pressing down to receive the help of the guide spring 632 When the lever piece 614 is returned to its original state, as the elevating member 640 connected to the external cable 620 is raised, the connecting member 520 is raised in the connecting hole 221 and the inner cable 510. As the tension holder 130 is lifted up and the compression spring 132 is recompressed, the moving pipe 150 is raised so that the lower portion of the locking key 152 is engaged with the locking chuck 163 by being pulled up. The ball 170 is pressed by the lock key 152 to span the lock hole formed in the lock chuck 163 and to be locked to the locking groove 331 of the fixed shaft 330. Pull the piston 300 or force Even if it in no more fixed locking pulled or not the kidney, it can be used in a bicycle the height of the saddle adjustment state

In addition, referring to FIGS. 7A and 7B, a bicycle having a structure in which the seat post of the bicycle is designed to have a short length and the lower end thereof is not coupled to the bicycle frame and is exposed to the air may be present. When the elevating member 640 of the 600 is inserted into the insertion hole 111 of the lower end of the outer pipe 110 so that the elevating member 640 is coupled with the lower portion of the elevating holder 130, When the elevating member 640 is elevated by operation, the elevating holder 130 is elevated together, and the elevating member 640 is lowered when the external cable 620 is pulled by rotating the lever piece 614. Accordingly, the lifting holder 130 coupled thereto is lowered in the moving space 140 and the compression spring 131 is extended, and the moving pipe 150 coupled with the lifting holder 130 is the long hole 151. Will be lowered within the range of the lock key (152) As a result, the ball 170, which was pressed by the locking key 152, is released from the locking groove 331 of the fixed shaft 330, and becomes open, and the extension spring compressed in the open state ( As the 340 is extended, the upper bolt 320 is pushed upward, whereby the inner pipe 310 of the piston 300 coupled with the upper bolt 320 rises together with the fixed shaft 330 to seat. The length of the post can be adjusted. At this time, the user is adjusted to an appropriate height to fit the user's physical condition while pressing down the saddle or release the pressing force. Thereafter, by releasing the force applied to the lever 610 and returning the lever piece 614 to the original state with the help of the guide spring 632, the lifting member 640 connected to the external cable 620 is raised. The lifting holder 130 is raised and the compression spring 132 is compressed again, the moving pipe 150 is raised accordingly, the ball 170 is pressed by the locking key 152 to the fixed shaft 330 Since it is caught in the locking groove 331 of the locked state becomes a closed state is no longer pulled or extended even when pulling or applying the piston unit 300, the lock is fixed, the height of the saddle is adjusted It can be used.

As a result, the variable seatpost 1 according to the present invention can be conveniently used because the cable connected to the lever does not move together and does not cause interference when the height is adjusted, and the lever can be selectively connected to the side or the bottom of the outer pipe. Usability can be extended, and the upper bolt can be rotated to adjust the maximum variable length to suit the structure of the bicycle and the user's physical condition, and the lock key can be locked or opened by simply operating the lever. Since it can be freely adjusted, the operation is convenient, it can respond quickly in various use environments, and it is excellent in usability and convenience.

In the present invention, the above embodiment is only one example, and the present invention is not limited thereto. Anything that has substantially the same configuration as the technical idea described in the claims of the present invention and achieves the same effect is included in the technical scope of the present invention.

The variable seatpost according to the present invention can be conveniently used because the cable connected to the lever does not move together and does not cause interference when the height is adjusted, and the lever can be selectively connected and applied to the side or the bottom of the outer pipe to expand the usability. By rotating the upper bolt, there is an industrial applicability because the maximum variable length can be adjusted to match the use environment of the bicycle and the user's physical condition.

Claims

An outer pipe having an insertion hole formed at a lower end thereof, a support pipe installed inside the outer pipe and supported by the lower end of the extension spring, and a spring groove formed at the lower end of the outer pipe and having a compression spring inserted therein, and having a lower end of the inner cable. A lift holder which is coupled and fixed by a fixing bolt and installed to have a moving space at a lower side of the lift holder, is formed inside the outer pipe to move up and down by being combined with the lift holder, and a long hole is formed at the bottom, and a lock key at the top. A body part including a fixed pipe having a locking chuck formed at a top thereof with a fixed pin coupled to a lower hole formed at an inner side of the moving pipe and formed at a lower end thereof and fixed to a lower portion of the long hole;

A cap part including an outer cap coupled to an upper end of the outer pipe, a coupling ring coupled to an outer circumference of the outer pipe and having a connection hole formed therein to connect a connection part and a lever part;

An inner pipe inserted into the outer pipe to be lifted into and out of the body portion, an upper bolt coupled to an upper inner side of the inner pipe, and installed on an inner side of the inner pipe and fastened to the upper bolt, and a plurality of locking grooves along a length direction Is formed and the piston shaft including a fixed shaft, the ball mounted to the locking chuck is fixed to the locking groove, the length adjustment extension spring installed inside the inner pipe;

A saddle fastening part coupled to an upper end of the inner pipe and having a saddle fastened to an upper part thereof;

An inner cable disposed along a cable hole formed in a longitudinal direction between the outer pipe and the inner pipe and having a lower end coupled to a lifting holder, and a connection member inserted into the connection hole and coupled to an upper end of the inner cable. Connection; And

And a lever unit including a lever, an external cable connected to the lever, and a lifting member coupled to the external cable and inserted into a connection hole or an insertion hole and being elevated by an operation of the lever.
The method of claim 1,

The connecting member is coupled to an upper portion of the elevating member, and when the elevating member is elevated by the operation of the lever, the elevating holder is lifted together by elevating the elevating holder connected through the inner cable in the moving space by the compression spring. Variable seatpost, characterized in that the lifting and moving of the pipe to lock and unlock the lock key.
The method of claim 1,

The elevating member is inserted into the insertion hole and coupled to the elevating holder, and when the elevating member is elevated by the operation of the lever, elevating the elevating holder in the moving space by the compression spring, thereby moving the pipe. The adjustable seat post, characterized in that the lift and move to lock and unlock the lock key.
The method of claim 1,

A variable seatpost, characterized in that the upper end of the fixing shaft is screwed on the inner side of the upper bolt to adjust the maximum variable length by rotating the upper bolt.
The method of claim 1,

The fixed shaft has a limit ring is formed at the lower end, the variable seat post, characterized in that the limit ring is locked to the lower end of the upper locking chuck to limit the rise and departure of the piston.
The method of claim 1,

The piston is a variable seat post, characterized in that the longitudinal groove is formed in the longitudinal direction on the lower outer peripheral surface of the inner pipe, the interruption pin is provided to intermittently rotate the longitudinal groove.
The method of claim 1,

The lever unit further includes a support that is connected to the other end of the external cable, the support is formed with a lifting hole in the inner side, the lifting member connected to the external cable is inserted into the lifting hole to be lifted, when operating the lever And the elevating member is elevated in the elevating hole, and the elevating member is guided by the guide spring after the lowering and is returned.
The method of claim 7, wherein

The outer cable coupled to the elevating member, and the inner cable coupled to the support and the elevating holder is variable seatpost, characterized in that the pressure is fixed by a fixing bolt.