Rolling saddle for reducing friction from pedaling motion of bicycle and bicycle provided with rolling saddle

Abstract

The present invention relates to a rolling saddle for reducing friction of pedaling motion of a bicycle, comprising: a seat body for a human to sit on; one or more rolling frames which are fixed to the bottom surface of the seat body and provided with one or more rotation coupling holes for rolling rotation of the seat body; a rolling seat rail which is rotatably coupled to the rotation coupling hole of the rolling frame, and fixed to a saddle clamp; and a rolling rotation shaft bolt which is inserted into the rotation coupling hole of the rolling frame and couples the rolling frame to the rolling seat rail to rollably rotate, wherein the seat body, along with the rolling frame, is capable of rollably rotating by a certain angle to the left and right of the rolling seat rail.

Description

A rolling saddle for reducing friction during pedaling of a bicycle and a bicycle equipped with said rolling saddle

[0001] The present invention relates to a rolling saddle for reducing friction during pedaling of a bicycle, and more specifically, to a rolling saddle for reducing friction during pedaling that is used as a saddle for a bicycle and rotates at a certain angle together with pedaling motion.

[0002] Generally, a bicycle is configured so that when a user sits on the saddle and pedals, the human power is transmitted to the wheels through the pedals, front and rear gears, and the chain connecting the gears, thereby providing propulsion.

[0003] The user steps on the pedals with both legs while seated on the saddle, creating a pedaling motion in which the pedals rotate 360 ​​degrees up and down and forward and backward. In this pedaling motion, the user's legs primarily move up and down on both sides of the saddle.

[0004] If we consider the pedaling motion in more detail, while the user's buttocks are seated on the saddle, the inner thighs or the connecting part of the glutes rub against the sloped or curved surface of the saddle, causing friction.

[0005] Consequently, when users ride a bicycle for extended periods, the connecting parts of their thighs or buttocks are damaged by friction with the saddle. This damage can result in minor burns or cuts caused by friction.

[0006] As such, conventional bicycle saddles are fixed to the upper part of the post pipe in the middle of the bicycle, and the inclined or curved surface that contacts the shape of the human leg or buttocks can cause damage by generating repetitive friction on the adjacent parts of the leg or buttocks that move relative to each other during pedaling.

[0007] Furthermore, while existing saddles are available in various shapes suitable for the human legs and buttocks, and can be made slim to minimize chafing during pedaling, there were limitations in reducing chafing on the legs and buttocks while the saddle was fixed during pedaling.

[0008] Meanwhile, Registered Patent (Expired) No. 10-1160587 discloses a “bike saddle having a seated exercise function.” This bike saddle comprises a molded rolling member that includes a built-in compression spring to prevent twisting of the saddle during forward, backward, left, and right rolling movements, along with providing cushioning.

[0009] While the rolling element of such a motorcycle saddle provides a structure that enhances stability by preventing unnecessary twisting motions during seated exercises, thereby preventing injuries and side effects that may result from excessive movement, it is difficult to achieve the effect of reducing friction against the body by naturally inducing left-right rolling motion during pedaling.

[0010] The present invention provides a rolling saddle for reducing friction during pedaling and a bicycle equipped with said rolling saddle, which is configured to naturally roll at a certain angle to the left and right in accordance with the movement of the legs and buttocks during pedaling, thereby preventing or reducing chafing of the saddle on the adjacent parts of the thighs and buttocks, reducing friction on the chafing area, preventing skin damage, and also naturally assisting the human body's pedaling movement to enhance pedaling.

[0011] A rolling saddle for reducing pedal movement friction of a bicycle according to the present invention is a saddle fixed to a saddle clamp of a bicycle, comprising: a seat body for human seating; one or more rolling frames fixed to the bottom surface of the seat body and provided with one or more rotational coupling holes for rolling rotation of the seat body; a rolling seat rail fixed to the saddle clamp and coupled to the rotational coupling holes of the rolling frames so as to be rotatable relative to each other; and a rolling rotation axis bolt inserted into the rotational coupling holes of the rolling frames to rollably connect the rolling frames to the rolling seat rails. The seat body is capable of rolling rotation movement to the left and right of the rolling seat rails by a certain angle together with the rolling frames.

[0012]

[0013] The above rolling frame may include: a first rolling frame coupled to the front bottom portion of the seat body, wherein one upper portion of the rolling seat rail is rotatably fitted and the rotation coupling hole is provided; and a second rolling frame coupled to both sides of the rear bottom portion of the seat body, wherein one upper portion of the rolling seat rail is rotatably fitted and the rotation coupling hole is provided.

[0014]

[0015] Another configuration of the present invention may further include a fixed seat rail provided with a pair of seat rails fixedly arranged from the front bottom portion to the rear bottom portion of the seat body, wherein the rolling frame is fixed to the front portion of the fixed seat rail and the upper portion of one side of the rolling seat rail is rotatably coupled and the first rolling frame is provided with the rotational coupling hole; and a second rolling frame is fixed to the rear portion of the fixed seat rail and the upper portion of the other side of the rolling seat rail is rotatably coupled and the rotational coupling hole is provided.

[0016]

[0017] In another configuration of the present invention, one or more of the first rolling frame and the second rolling frame may each be disposed on the upper and lower surfaces of a pair of seat rail bars of the fixed seat rail, and may include a plurality of rail assembly plates having a rotational coupling hole and a round groove corresponding to the seat rail bar in one of them; and a rail assembly screw coupled to the plurality of rail assembly plates to fix the plurality of rail assembly plates to the fixed seat rail.

[0018]

[0019] The above rolling seat rail may include: a pair of rolling rail bars that are fitted into and fixed to the saddle clamp, with a front portion and a rear portion connected by an upward incline; a front rolling portion located in the front portion of the pair of rolling rail bars to connect the pair of rolling rail bars and provided with an axial coupling hole corresponding to the rotational coupling hole; and a rear rolling portion located in the rear portion of the pair of rolling rail bars to connect the pair of rolling rail bars and provided with an axial coupling hole corresponding to the rotational coupling hole.

[0020]

[0021] The present invention may further include an elastic damper that contacts one or more of the rolling frame and the rolling seat rail, and provides elasticity to the rolling rotation of the rolling frame relative to the rolling seat rail.

[0022]

[0023] The elastic damper may include an elastic ring fixed to the rolling seat rail so as to contact the rolling frame.

[0024]

[0025] The present invention may further include a rolling bearing that supports the rolling rotation of the rolling rotation shaft bolt.

[0026]

[0027] Meanwhile, a bicycle equipped with a rolling saddle for reducing pedal movement friction according to the present invention can be provided.

[0028] As described above, the present invention is configured to naturally roll at a certain angle to the left and right in accordance with the movement of the legs and buttocks during the pedaling motion of a bicycle, thereby preventing or reducing the phenomenon of the saddle rubbing against the adjacent parts of the thighs and buttocks, reducing friction on the rubbing areas, and preventing skin damage, and also naturally assisting the human body's pedaling motion to enhance the pedaling motion.

[0029] FIG. 1 is a three-dimensional view of a bicycle equipped with a rolling saddle for reducing pedal motion friction according to one embodiment of the present invention.

[0030] Figure 2 is a detailed view of the rolling saddle of Figure 1.

[0031] Figure 3 is a real drawing of the rolling saddle of Figure 2.

[0032] Figure 4 is a cross-sectional view of AA of Figure 2.

[0033] Figure 5 is a diagram showing the rolling motion state of the rear side of the rolling saddle of Figure 2.

[0034] FIG. 6 is a three-dimensional view of a rolling saddle for reducing pedal motion friction of a bicycle according to another embodiment of the present invention.

[0035] FIG. 7 is a real-life drawing of a rolling saddle for reducing pedal motion friction of a bicycle according to another embodiment of the present invention.

[0036] FIGS. 8 to 10 are actual drawings of a rolling saddle for reducing pedal motion friction of a bicycle according to another embodiment of the present invention, wherein a coil spring is applied as another example of an elastic damper.

[0037] Hereinafter, the main components of a rolling saddle for reducing pedal motion friction of a bicycle according to one embodiment of the present invention will be described based on the drawings.

[0038] FIG. 1 is a three-dimensional view of a bicycle equipped with a rolling saddle for reducing pedal motion friction according to one embodiment of the present invention, FIG. 2 is a detailed view of the rolling saddle of FIG. 1, FIG. 3 is a real view of the rolling saddle of FIG. 2, FIG. 4 is a cross-sectional view AA of FIG. 2, and FIG. 5 is a rolling motion state view of the rear side of the rolling saddle of FIG. 2.

[0039] And FIGS. 8 to 10 are actual drawings of a rolling saddle for reducing pedal motion friction of a bicycle according to another embodiment of the present invention, wherein a coil spring is applied as another example of an elastic damper.

[0040] First, referring to FIGS. 1 to 5, a rolling saddle (100) for reducing pedal movement friction of a bicycle (10) according to one embodiment of the present invention allows left and right rolling of the saddle during pedal movement of a user on a saddle fixed to a saddle clamp (20) of the bicycle (10), wherein a rolling frame (120) provided on the bottom surface of a seat body (110) is rotatably coupled to a rolling seat rail (130) fixed to a saddle clamp (20).

[0041] A rolling saddle (100) for reducing pedal movement friction of a bicycle according to one embodiment of the present invention comprises, as its main components: a seat body (110) for human seating; a rolling frame (120) having a rotational coupling hole (123) fixed to the bottom surface of the seat body (110); a rolling seat rail (130) which is rotatably coupled to the rotational coupling hole (123) of the rolling frame (120); and a rolling rotation axis bolt (140) which is inserted into the rotational coupling hole (123) of the rolling frame (120).

[0042] According to the present embodiment, the seat body (110), which is provided as a saddle seat, is connected to the rolling seat rail (130), to which the rolling frame (120) is fixed to the saddle clamp (20), so as to be rotatable left and right through a rolling rotation axis bolt (140) connected to a rotational connection hole (123) and an axis connection hole (134), thereby enabling rolling rotation movement to the left and right of the rolling seat rail (130) together with the rolling frame (120) by a certain angle.

[0043] According to this, the rolling saddle (100) of the bicycle (10) is configured to naturally roll at a certain angle to the left and right in accordance with the movement of the legs and buttocks during the pedaling motion of the bicycle (10), thereby preventing or reducing the friction between the saddle and the adjacent parts of the thighs and buttocks of the legs, thereby reducing friction on the frictional parts and preventing skin damage, and also naturally assisting the pedaling motion of the human body can enhance the pedaling motion.

[0044] Among the main components according to the above-described embodiment, the rolling frame (120) may be provided with one or more rotational coupling holes (123) for rolling rotation of the sheet body (110).

[0045] One or more of these rolling frames (120) may include: a first rolling frame (121) which is coupled to the front bottom portion of the seat body (110) and has a rotational coupling hole (123) formed therein, into which one upper side of the rolling seat rail (130) is rotatably fitted; and a second rolling frame (122) which is coupled to both sides of the rear bottom portion of the seat body (110) and has a rotational coupling hole (123) formed therein, into which one upper side of the rolling seat rail (130) is rotatably fitted.

[0046] The first rolling frame (121) is located on the front bottom surface of the seat body (110) and its upper surface is positioned long toward the front of the seat body (110) so that it can be stably and firmly fixed by being coupled to the front fixing part located on the bottom surface of the seat body (110).

[0047] This first rolling frame (121) has a rotational coupling hole (123) provided at the bottom and may be provided in a rounded triangular shape at the bottom, but is not limited thereto and may also be square, pentagonal, round, etc.

[0048] The second rolling frame (122) is located on the rear bottom portion that is widely extended from the front bottom portion of the seat body (110), and the upper portion is extended to both sides in correspondence with the extended width of the rear bottom portion and supported, and is connected to the rear fixing portions provided on both sides of the seat body (110) to be stably and firmly fixed.

[0049] This second rolling frame (122) may be provided in an inverted triangular shape with a rotational coupling hole (123) provided at the rounded bottom end, but is not limited thereto and may also be in a square, pentagonal, semicircular, or semi-elliptical shape.

[0050] The rotational coupling holes (123) of the first rolling frame (121) and the second rolling frame (122) as described above may be arranged on the same horizontal line spaced apart at the vertical lower part of the horizontal centerline of the seat body (110), but are not limited thereto, and may also be arranged on mutually different horizontal lines or on an inclined line close to the horizontal line.

[0051] In the above, one or more rolling frames (120) are configured to be divided into a first rolling frame (121) and a second rolling frame (122) at the front and rear of the seat body (110), but are not limited thereto and may be provided as a single rolling frame extending from the central part of the seat body (110) to the front and rear parts.

[0052] A rolling seat rail (130) is rotatably connected to the first rolling frame (121) and the second rolling frame (122).

[0053] This rolling seat rail (130) is fitted into a saddle clamp (20) and fixed so as to be detachably fixed, and has a structure in which a front rolling section (132) and a rear rolling section (133) corresponding to a first rolling frame (121) and a second rolling frame (122) are formed at the front upper and rear upper sections of a pair of rolling rail bars (131) that are connected with the front and rear sections inclined upward.

[0054] A pair of rolling rail bars (131) provide bending and twisting elasticity to elastically support the seat body (110) and can be assembled to a pair of clamp members corresponding to the bar shape of the saddle clamp (20) and detachably fixed.

[0055] The front rolling part (132) is located in the front portion of a pair of rolling rail bars (131) to connect the pair of rolling rail bars (131), and is provided with an axial coupling hole (134) corresponding to a rotational coupling hole (123). After being fitted into the first rolling frame (121), a rolling rotational shaft bolt (140) is coupled to the rotational coupling hole (123) and the axial coupling hole (134), thereby enabling relative rotational coupling with the first rolling frame (121).

[0056] The rear rolling section (133) is located at the rear portion of a pair of rolling rail bars (131) to connect the pair of rolling rail bars (131), and is provided with an axial coupling hole (134) corresponding to a rotational coupling hole (123). After being fitted into the second rolling frame (122), a rolling rotational shaft bolt (140) is coupled to the rotational coupling hole (123) and the axial coupling hole (134), thereby enabling relative rotational coupling with the second rolling frame (122).

[0057] The rolling rotation shaft bolt (140) is inserted into the first rolling frame (121) and the second rolling frame (122) so as to rollably connect the first and second rolling frames (120: 121, 122) to the rolling seat rail (130), and then a portion of the front and rear ends are screw-connected, and the middle portion is slip-able bearing-connected to the front rolling portion (132) and the rear rolling portion (133).

[0058] Conversely, the rolling rotation axis bolt (140) may have its middle portion screwed to the rolling seat rail (130), and its front and rear portions may be rotatably and slip-coupled to the first and second rolling frames (120) and then secured with a nut.

[0059] In FIG. 4, the rolling rotation axis bolt (140) is depicted as having a screw portion that is screwed into the first and second rolling frames (120: 121, 122), but this is merely a presentation of a simple conceptual connection structure, and the screw portion can be further extended to one side of the first and second rolling frames (120: 121, 122) and more securely fixed by placing a washer to prevent loosening or by fastening a nut.

[0060] The present embodiment may further include a rolling bearing (150) for supporting the rolling rotation of a rolling rotation axis bolt (140) that allows relative rolling rotation of the rolling frame (120) and the rolling seat rail (130).

[0061] Preferably, the rolling bearing (150) can be fixed by being fitted into the shaft coupling hole (134) when the rolling rotation shaft bolt (140) is screw-coupled to one of the rotation coupling holes (123) and is slidably coupled to the shaft coupling hole (134).

[0062] As such, the rolling bearing (150) is appropriately placed in the shaft coupling hole (134) of the rolling seat rail (130), but is not necessarily limited thereto, and may also be placed in the rotational coupling hole (123) of the first and second rolling frames (120: 121, 122) depending on the position change of the slip portion of the rolling rotation shaft bolt (140).

[0063] The rolling bearing (150) is a radial needle, cylinder, or ball bearing, but is not limited thereto, and a radial sliding bearing can also be used.

[0064] The rolling saddle (100) according to the present embodiment is configured to allow relative rotation of the rolling frame (120) and the rolling seat rail (130) by a certain angle to the left and right, thereby enabling left and right rotational movement of the seat body (110) that substantially constitutes the saddle seat, and it is desirable to provide elasticity to the left and right rotational movement of the seat body (110) and to limit the angle of rotation.

[0065] That is, the present embodiment may further include an elastic damper (160) that contacts one or more of the rolling frame (120) and the rolling seat rail (130) and provides elasticity to the rolling rotation of the rolling frame (120) relative to the rolling seat rail (130).

[0066] These elastic dampers (160) may be provided as elastic rings (161) (see FIG. 2, FIG. 3, and FIG. 5) or springs (163) (see FIG. 8 to FIG. 10) that are fixed to rolling seat rails (130) so as to contact rolling frames (120).

[0067] The elastic ring (161) may be made of an elastic or resilient material such as a rubber band and is secured by wrapping around one or more of the front rolling portion (132) and the rear rolling portion (133) of the rolling seat rail (130).

[0068] Preferably, the elastic ring (161) is positioned to wrap around the upper part of the rear rolling part (133) so that it is positioned in contact with the second rolling frame (122) at the upper part of the rear rolling part (133), thereby sufficiently restricting detachment.

[0069] Accordingly, the elastic damper (160) is located on the upper part of the rear rolling section (133) of the rolling seat rail (130) and contacts both sides of the lower part of the second rolling frame (122) of the rolling frame (120) during the left and right rolling movement of the rolling frame (120), thereby elastically supporting the rolling frame (120) and limiting the left and right rotation angle.

[0070] In this way, the elastic damper (160) limits the left and right rolling angle of the rolling frame (120) on the rolling seat rail (130) during the rolling movement of the seat body (110), reduces collisions that may occur between the rolling frame (120) and the rolling seat rail (130), and absorbs shock to prevent vibration and noise.

[0071] In addition, in this embodiment, the shock that may occur from the rolling of the saddle during pedaling is cushioned, making the rolling motion of the saddle natural during pedaling and providing comfort to the user.

[0072]

[0073] Meanwhile, the elastic damper (160) has the same function as the elastic ring (161) but has a different structure and may include a torsion spring (162) placed on the rolling rotation axis bolt (140) to support the rolling rotation of the rolling frame (120), or an elastic member (e.g., a coil spring) (163) provided on the rolling frame (120) to contact the rolling seat rail (130).

[0074] These torsion springs (162) or elastic members (163) can all be appropriately modified and arranged to mitigate the impact that may occur during the rolling motion of the rolling frame (120) when the rolling frame (120) rolls left and right, or to provide elasticity for the left and right rolling motion.

[0075]

[0076] FIG. 6 is a three-dimensional view of a rolling saddle for reducing pedal motion friction of a bicycle according to another embodiment of the present invention, and FIG. 7 is a real-life view of a rolling saddle for reducing pedal motion friction of a bicycle according to another embodiment of the present invention.

[0077] Hereinafter, a rolling saddle for reducing pedal motion friction of a bicycle according to another embodiment of the present invention will be described with reference to FIGS. 1, FIGS. 4, FIGS. 6, and FIGS. 7.

[0078] This other embodiment applies the above-mentioned rolling structure to an existing saddle, and can be provided by attaching a rolling frame (120) having a rotational coupling hole (123) to a fixed seat rail (170) and attaching a rolling seat rail (130) to the rolling frame (120) so as to be rollably rotatable.

[0079] According to another embodiment of the present invention, a rolling saddle (100) for reducing pedal motion friction of a bicycle may further include a fixed seat rail (170) provided by a pair of seat rail bars (171) fixedly positioned from the front bottom portion to the rear bottom portion of a seat body (110), and one or more rolling frames (120) are applied.

[0080] According to another embodiment of the present invention, one or more rolling frames (120) may include: a first rolling frame (121) which is fixed to the front portion of a fixed seat rail (170) and has a rotational coupling hole (123) provided therein, wherein one upper portion of a rolling seat rail (130) is rotatably coupled thereto; and a second rolling frame (122) which is fixed to the rear portion of a fixed seat rail (170) and has a rotational coupling hole (123) provided therein, wherein the other upper portion of a rolling seat rail (130) is rotatably coupled thereto.

[0081] In another embodiment of the present invention, the first rolling frame (121) and the second rolling frame (122) may each include a plurality of rail assembly plates (181) which are respectively disposed on the upper and lower surfaces of a pair of seat rail bars (171) of a fixed seat rail (170) and which are provided with a rotational coupling hole (123) and a round groove (182) corresponding to the seat rail bar (171); and a rail assembly screw (183) which is coupled to the plurality of rail assembly plates (181) to fix the plurality of rail assembly plates (181) to the fixed seat rail (170).

[0082] In this way, the first rolling frame (121) and the second rolling frame (122) can be provided by fixing a plurality of rail assembly plates (181) to the front and rear portions of the seat rail bar (171) of the fixed seat rail (170) by rail assembly screws (183).

[0083] Multiple rail assembly plates (181) can be connected to the axial connection hole (134) of the rolling sheet rail (130) and the rolling rotation axis bolt (140) by providing a rotational connection hole (123) at the top. In practice, only one can be placed in the axial connection hole (132), unlike the rotational connection hole (123) and FIG. 4.

[0084] That is, the front rolling portion (132) of the rolling seat rail (130) is located in front of the plurality of rail assembly plates (181) constituting the first rolling frame (121), and the rear rolling portion (133) is located behind the plurality of rail assembly plates (181) constituting the second rolling frame (122).

[0085] These other embodiments may also include a rolling bearing (150) that supports the rolling rotation of the rolling shaft bolt (140).

[0086] Preferably, the rolling bearing (150) shown in FIG. 4 is fitted into the front rolling portion (132) and the front rolling portion (132) to support the rotational movement of the rolling rotational shaft bolt (140). Of course, a radial sliding bearing may also be appropriately placed to support the rolling rotational shaft bolt (140).

[0087] As such, the rolling bearing (150) is preferably fitted and fixed in the rotational coupling hole (123), but is not limited thereto and may be appropriately modified and placed in the rotational coupling hole (123) according to the coupling structure of the rolling rotational shaft bolt (140).

[0088]

[0089] In a seat body (110) combined with a pair of seat rail bars (171) of a fixed seat rail (170) according to another embodiment of the present invention, the front and rear portions of a pair of rolling rail bars (131) of a rolling seat rail (130) are positioned between the pair of seat rail bars (171) of the fixed seat rail (170), so the rotation angle of left and right rolling is naturally limited.

[0090]

[0091] In other embodiments of the present invention, the elastic damper (160) shown in FIGS. 2 and FIGS. 3 may also be optionally applied. When such an elastic damper (160) is applied, an elastic ring (161) may be fixed to one or more of the front and rear portions of the rolling seat rail (130) at one or more of the front and rear portions of the first rolling frame (121) and the second rolling frame (122).

[0092] In addition, the aforementioned torsion spring (162) or elastic member (163) may be appropriately modified in design to be provided as an elastic damper (160).

[0093]

[0094] Meanwhile, according to one embodiment of the present invention, a bicycle (10) equipped with a rolling saddle (100) for reducing pedal movement friction of the aforementioned bicycle can be provided.

[0095] A bicycle (10) equipped with a rolling saddle (100) according to the aforementioned embodiments enables elastic left-right rolling motion of the saddle during pedaling.

[0096] As such, the bicycle (10) equipped with a rolling saddle according to the present embodiment is configured to naturally roll at a certain angle to the left and right in accordance with the movement of the legs and buttocks during the pedaling motion of the bicycle (10), thereby preventing or reducing the friction of the saddle on the thighs and buttocks adjacent parts of the legs, thereby reducing friction on the frictional parts and preventing skin damage, and can naturally assist the pedaling motion of the human body and enhance the pedaling motion.

Claims

1. A saddle that is fixed to a bicycle saddle clamp, A seat body for human seating; one or more rolling frames fixed to the bottom surface of the seat body and provided with one or more rotational coupling holes for rolling rotation of the seat body; a rolling seat rail connected to the rotational coupling hole of the rolling frame so as to be rotatable relative to it and fixed to the saddle clamp; and a rolling rotation axis bolt inserted into the rotational coupling hole of the rolling frame to connect the rolling frame to the rolling seat rail so as to be rollingly rotatable; comprising The above seat body is capable of rolling and rotating at a certain angle to the left and right of the rolling seat rail together with the above rolling frame, It further includes a fixed seat rail provided as a pair of seat rails fixedly positioned from the front bottom portion to the rear bottom portion of the seat body, and The above one or more rolling frames include: a first rolling frame fixed to the front portion of the fixed seat rail, wherein one upper portion of the rolling seat rail is rotatably coupled and the rotational coupling hole is provided; and a second rolling frame fixed to the rear portion of the fixed seat rail, wherein the other upper portion of the rolling seat rail is rotatably coupled and the rotational coupling hole is provided. A rolling saddle for reducing pedal motion friction of a bicycle, characterized by comprising: one or more of the first rolling frame and the second rolling frame, each disposed on the upper and lower surfaces of a pair of seat rail bars of the fixed seat rail, wherein one of them is provided with a rotational coupling hole and a round groove corresponding to the seat rail bar; and a rail assembly screw coupled to the plurality of rail assembly plates to fix the plurality of rail assembly plates to the fixed seat rail.

2. In Paragraph 1, The above one or more rolling frames are A first rolling frame coupled to the front bottom portion of the above-mentioned seat body, wherein one upper side of the rolling seat rail is rotatably fitted and the rotation coupling hole is provided therein; and A rolling saddle for reducing pedal movement friction of a bicycle, characterized by comprising: a second rolling frame coupled to both sides of the rear bottom portion of the seat body, wherein one upper side of the rolling seat rail is rotatably fitted and the rotation coupling hole is provided.

3. In Paragraph 1, The above rolling sheet rail is A pair of rolling rail bars that are fitted and fixed to the above-mentioned saddle clamp, with the front and rear portions inclined upward and connected; A front rolling portion located at the front portion of the pair of rolling rail bars to connect the pair of rolling rail bars, and provided with an axial coupling hole corresponding to the rotational coupling hole; and A rolling saddle for reducing pedal motion friction of a bicycle, characterized by including: a rear rolling portion located at the rear portion of the pair of rolling rail bars, connecting the pair of rolling rail bars, and having an axial coupling hole corresponding to the rotation coupling hole.

4. In Paragraph 1, A rolling saddle for reducing pedal motion friction of a bicycle, characterized by further including an elastic damper that contacts one or more of the rolling frame and the rolling seat rail, and provides elasticity to the rolling rotation of the rolling frame relative to the rolling seat rail.

5. In Paragraph 4, A rolling saddle for reducing pedal motion friction of a bicycle, characterized in that the above elastic damper includes an elastic ring or spring fixed to the rolling seat rail so as to contact the rolling frame.

6. In Paragraph 1, A rolling saddle for reducing pedal motion friction of a bicycle, further comprising a rolling bearing that supports the rolling rotation of the above-mentioned rolling rotation shaft bolt, wherein the rolling bearing comprises any one of a radial needle, a cylinder, a ball bearing, or a radial sliding bearing.

7. A saddle that is fixed to a bicycle saddle clamp, Seat body for human seating; One or more rolling frames fixed to the bottom surface of the above-mentioned sheet body and provided with one or more rotational coupling holes for rolling rotation of the above-mentioned sheet body; A rolling seat rail that is rotatably coupled to the rotational coupling hole of the rolling frame and fixed to the saddle clamp; and A rolling rotation shaft bolt inserted into a rotational coupling hole of the rolling frame to enable rolling rotation of the rolling frame to the rolling seat rail; comprising A rolling saddle for reducing pedal motion friction of a bicycle, characterized in that the seat body is capable of rolling rotational movement to the left and right of the rolling seat rail together with the rolling frame.

8. A bicycle equipped with a rolling saddle for reducing pedal movement friction according to paragraph 1.

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