Structure for rotating seat

Abstract

A structure for rotating a seat is disclosed. The structure for rotating a seat comprises: a fixed frame; and a rotating frame which can rotate, around the rotation axis thereof, with respect to the fixed frame, wherein supports may be provided in support-contacting portions positioned below a reference line intersecting the rotation center of the rotating frame.

Description

Structure for rotation of the sheet

[0001] The present invention relates to a structure for rotating a seat, and more particularly, to a structure for supporting a seat so that the seat can rotate according to the movement of the hips of a bicycle rider.

[0002] The seat on which the cyclist's buttocks rest is usually provided with a narrow front area to make it easy for the rider to pedal, and a relatively wide rear area to support the load on the buttocks.

[0003] When a rider steps on the pedal while sitting on the seat, it puts pressure on the prostate and scrotum in men and on the perineum in women, while causing discomfort due to friction between the seat and the buttocks or thighs.

[0004] For this reason, seat structures capable of rotating up and down in response to the rider's hip movements when pedaling have been developed. These seat structures typically rotate up and down, similar to a seesaw, a children's plaything.

[0005] However, the aforementioned seat structure provides weak reaction force to support the rider's buttocks when the seat is lowered while the rider pedals, preventing the rider's force from being properly transmitted to the pedals. This forces the rider to pedal in an unstable position, resulting in significant physical exhaustion. Furthermore, the inability to properly transmit force to the pedals reduces driving speed. Furthermore, road shock can be transmitted to the rider's buttocks, potentially causing pain in the buttocks and lower back.

[0006] Accordingly, there is a need to develop a seat structure that can support the buttocks by following the rider's hip movements while riding a bicycle.

[0007] The present invention provides a structure for rotating a seat that can rotate according to the hip movement of a bicycle rider.

[0008] In addition, the present invention provides a structure for rotation of a sheet that allows the sheet to rotate smoothly.

[0009] A structure for rotating a sheet according to an embodiment of the present invention includes a fixed frame; and a rotating frame capable of rotating relative to the fixed frame about a rotation axis, wherein a support may be provided at a support contact portion located below a reference line crossing the rotation center of the rotating frame.

[0010] Additionally, the support can be brought into contact with the support contact portion.

[0011] Additionally, the support may be integrally connected to the support contact portion.

[0012] Additionally, the support may be positioned below the reference line.

[0013] In addition, the apparatus may further include a left frame having a lower end connected to a left region of the fixed frame by a first lower connecting shaft and an upper end connecting a left region of the rotating frame; and a right frame having a lower end connected to a right region of the fixed frame by a second lower connecting shaft and an upper end connecting a right region of the rotating frame, wherein the rotating shaft may include a first upper connecting shaft connecting an upper end of the left frame and a left region of the rotating frame; and a second upper connecting shaft connecting an upper end of the right frame and a right region of the rotating frame.

[0014] A structure for rotating a sheet according to another embodiment of the present invention comprises a fixed frame; and a rotating frame capable of rotating relative to the fixed frame, wherein a space may be provided between a reference line crossing the center of rotation of the rotating frame and an upper surface of the rotating frame.

[0015] Additionally, a cloud member may be provided between the fixed frame and the rotating frame.

[0016] A structure for rotating a sheet according to an embodiment of the present invention includes a fixed frame; and a rotating frame capable of rotating relative to the fixed frame, wherein a support may be provided so that a load is applied below a reference line crossing the center of rotation of the rotating frame.

[0017] Additionally, the support may be positioned below the reference line.

[0018] According to the present invention, since the point at which the load applied to the sheet is transmitted to the rotating frame is positioned lower than the rotation axis of the rotating frame, the rotating frame can rotate smoothly.

[0019] In addition, according to the present invention, since the first reference line connecting the points where the support and the sheet come into contact is positioned lower than the second reference line crossing the center of the rotation axis of the rotation frame, the rotation frame can rotate more gently and smoothly.

[0020] In addition, according to the present invention, since the seat rotates up and down following the movement of the passenger's buttocks while the passenger steps on the pedal, the seat can be stably placed against the passenger's buttocks.

[0021] In addition, according to the present invention, since the rider's buttocks can be stably placed on the seat while pedaling, the rider's power can be sufficiently transmitted to the bicycle pedals, allowing the bicycle to be driven effectively.

[0022] FIG. 1 is a front view showing a structure for rotation of a sheet according to an embodiment of the present invention.

[0023] Fig. 2 is a side view showing a structure for rotation of the sheet of Fig. 1.

[0024] Figure 3 is an exploded perspective view of a structure for rotation of the sheet of Figure 1.

[0025] Fig. 4 is a drawing showing a part of a structure for rotation of the sheet of Fig. 1.

[0026] FIG. 5 is a schematic drawing showing a structure for rotation of a sheet according to the embodiment of FIG. 1.

[0027] Figures 6 and 7 are drawings showing the movement of a structure according to an embodiment of the present invention.

[0028] FIG. 8 is a drawing showing a structure for rotation of a sheet according to another embodiment of the present invention, viewed from the rear.

[0029] FIG. 9 is a cross-sectional view of a structure for rotation of a sheet according to another embodiment of the present invention, viewed from the right side.

[0030] Fig. 10 is a rear view of the structure for rotation of the sheet of Fig. 9.

[0031] FIG. 11 is a drawing showing the coupling relationship between a supporter and a supporter according to various embodiments of the present invention.

[0032] FIG. 12 is a drawing showing the coupling relationship between a supporter and a supporter according to another embodiment of the present invention.

[0033] FIG. 13 is a drawing showing a structure for rotation of a sheet according to another embodiment of the present invention, viewed from the rear.

[0034] FIG. 14 is a drawing showing a structure for rotation of a sheet according to another embodiment of the present invention, viewed from the rear.

[0035] A structure for rotating a sheet according to an embodiment of the present invention includes a fixed frame; and a rotating frame capable of rotating relative to the fixed frame about a rotation axis, wherein a support may be provided at a support contact portion located below a reference line crossing the rotation center of the rotating frame.

[0036] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, the technical concept of the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided to ensure that the disclosed content is thorough and complete and to sufficiently convey the spirit of the present invention to those skilled in the art.

[0037] In this specification, when a component is referred to as being on another component, it means that it can be formed directly on the other component, or a third component may be interposed between them. In addition, in the drawings, the thicknesses of films and regions are exaggerated for the purpose of effectively explaining the technical contents.

[0038] Also, although terms such as first, second, and third have been used to describe various components in various embodiments of this specification, these components should not be limited by these terms. These terms are only used to distinguish one component from another. Thus, what is referred to as a first component in one embodiment may be referred to as a second component in another embodiment. Each embodiment described and illustrated herein also includes its complementary embodiments. Also, the term "and / or" has been used herein to mean including at least one of the components listed before and after.

[0039] In the specification, singular expressions include plural expressions unless the context clearly dictates otherwise. In addition, terms such as "comprise" or "have" are intended to specify the presence of a feature, number, step, component, or combination thereof described in the specification, and should not be construed as excluding the presence or addition of one or more other features, numbers, steps, components, or combinations thereof. In addition, the term "connection" is used in the present specification to mean both indirectly connecting multiple components and directly connecting them.

[0040] In addition, when describing the present invention below, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

[0041]

[0042] FIG. 1 is a front view showing a structure for rotation of a sheet according to an embodiment of the present invention, FIG. 2 is a side view showing the structure for rotation of the sheet of FIG. 1, FIG. 3 is an exploded perspective view of the structure for rotation of the sheet of FIG. 1, FIG. 4 is a drawing showing a part of the structure for rotation of the sheet of FIG. 1, and FIG. 5 is a drawing briefly showing the structure for rotation of the sheet according to the embodiment of FIG. 1.

[0043] Referring to FIGS. 1 to 5, a structure (10) for rotation of a seat supports a seat (20) that supports the buttocks of a passenger, and supports the seat (20) so that the left and right sides of the seat (20) rotate in an up-and-down direction according to the movement of the buttocks of the passenger.

[0044] The structure (10) for rotation of the sheet includes a fixed frame (100), a rotation frame (200), and a rotation module (300).

[0045] The fixed frame (100) is a frame having a predetermined thickness and length, and can be positioned at the lower rear area of ​​the seat (20). The fixed frame (100) can be fixedly connected to a saddle rail (30) that is connected to the bicycle body (40).

[0046] The rotating frame (200) is provided with a predetermined length and can be arranged parallel to the fixed frame (100). According to an embodiment, the rotating frame (200) can be positioned above the fixed frame (100). In addition, the rotating frame (200) can have a longer length than the fixed frame (100).

[0047] The rotating frame (200) may be formed with a supporter (210, 220) having a pipe shape, the lower part of which is closed by a floor surface and the upper part is open. The supporters (210, 220) may be formed in pairs. The bottom surface on the inner side of the supporter (210, 220) may be a support contact part (212, 222) of the rotating frame (200). According to an embodiment, one supporter (210) may be located in a left area of ​​the rotating frame (200), and the other supporter (220) may be located in a right area of ​​the rotating frame (200). The supporters (210, 220) may be formed at both ends of the rotating frame (200). The inner side of the supporter (210, 220) is provided as a receiving space (211, 221).

[0048] In the receiving space (211, 221) of the supporter (210, 220), a support (21, 22) having a predetermined height in the form of a circular rod can be provided so as to be in contact with the support contact portion (212, 222).

[0049] According to the embodiment, the contact form between the bottom surface of the support (21, 22) and the support contact portion (212, 222) is shown as surface contact, but a contact form such as line contact or point contact can be formed so that the load applied to the support (21, 22) can be transmitted to the support contact portion (212, 222).

[0050] The rotation module (300) rotates the rotation frame (200) relative to the fixed frame (100) about the rotation axis (340, 360). The rotation module (300) includes a left frame (310), a right frame (320), a first lower connecting shaft (330), a second lower connecting shaft (350), a first upper connecting shaft (340), and a second upper connecting shaft (360).

[0051] The left frame (310) is provided with a predetermined length and connects the left area of ​​the fixed frame (100) and the left area of ​​the rotating frame (200). The lower end of the left frame (310) is connected to the fixed frame (100), and the upper end is connected to the rotating frame (200). The left frame (310) is arranged to be inclined at a predetermined angle with respect to the fixed frame (100). According to an embodiment, the angle (θ) between the left frame (310) and the fixed frame (100) may be preferably about 45°. Therefore, the connection area of ​​the left frame (310) and the fixed frame (110) is located relatively to the left of the connection area of ​​the left frame (310) and the rotating frame (200). Fastening holes (311, 315) are formed at the upper and lower ends of the left frame (310), respectively.

[0052] The right frame (320) has the same shape as the left frame (310). The right frame (320) connects the right area of ​​the fixed frame (100) and the right area of ​​the rotating frame (200). The lower end of the right frame (320) is connected to the right area of ​​the fixed frame (100), and the upper end is connected to the right area of ​​the rotating frame (200). The right frame (320) is arranged to be inclined at a predetermined angle with respect to the fixed frame (100). The angle between the right frame (320) and the fixed frame (100) may be the same as the angle between the left frame (310) and the fixed frame (100). Therefore, the connection area between the right frame (320) and the fixed frame (100) is located relatively to the right of the connection area between the right frame (320) and the rotating frame (200). Fastening holes (321, 325) are formed at the upper and lower ends of the right frame (320), respectively.

[0053] The first lower connecting shaft (330) connects the left area of ​​the fixed frame (100) and the lower end of the left frame (310). According to an embodiment, the first lower connecting shaft (330) protrudes forward from the left area of ​​the fixed frame (100) by a predetermined length and is inserted into a fastening hole (311) formed at the lower end of the left frame (310). The left frame (310) can rotate around the first lower connecting shaft (330).

[0054] The first upper connecting shaft (340) connects the left area of ​​the rotating frame (200) and the upper end of the left frame (310). According to an embodiment, the first upper connecting shaft (340) protrudes forward from the left area of ​​the rotating frame (200) by a predetermined length and is inserted into a fastening hole (315) formed at the upper end of the left frame (310). The left frame (310) can rotate around the second upper connecting shaft (340).

[0055] The second lower connecting shaft (350) connects the right area of ​​the fixed frame (100) and the lower end of the right frame (320). According to an embodiment, the second lower connecting shaft (350) protrudes forward from the right area of ​​the fixed frame (100) by a predetermined length and is inserted into a fastening hole (321) formed at the lower end of the right frame (320). The right frame (320) can rotate around the second lower connecting shaft (350).

[0056] The second upper connecting shaft (360) connects the right area of ​​the rotating frame (200) and the upper end of the right frame (320). According to an embodiment, the second upper connecting shaft (360) protrudes forward from the right area of ​​the rotating frame (200) by a predetermined length and is inserted into a fastening hole (325) formed at the upper end of the right frame (320). The right frame (320) can rotate around the second upper connecting shaft (360).

[0057] The first upper connecting shaft (340) and the second upper connecting shaft (360) are provided as rotation axes that allow the rotating frame (200) to rotate relative to the fixed frame (100).

[0058] In the embodiment, the load of the sheet applied to the support (21, 220) can be transmitted to the rotating frame (200) through the contact points (P1, P2) that contact the support contact portions (212, 222). The load applied to the support (21, 22) is applied below the reference line (L2), which is a horizontal line crossing the center of rotation of the rotating frame (200). The center of rotation of the rotating frame (200) becomes the center point of the connecting line connecting the center of the first upper connecting shaft (340) and the center of the second upper connecting shaft (360).

[0059] It is preferable that the horizontal line (L1) crossing the contact points (P1, P2) be parallel to the reference line (L2) so that the load action is balanced. However, if the heights of the supports (21, 22) are different, the contact points (P1, P2) may be positioned at different heights. It may be preferable that the material of the sheet (20) be made of plastic so as to respond to torsion due to up-and-down rotation.

[0060] Figures 6 and 7 are drawings showing the movement of a structure according to an embodiment of the present invention.

[0061] First, referring to Fig. 5, when the passenger's buttocks apply the same load to the left and right areas of the seat, the seat (20) maintains balance without tilting to either side. At this time, the support contact portions (212, 222), which are the bottom surfaces of the supporters (210, 220), are subjected to the same magnitude of force (F1=F2) from the supporters (21, 22).

[0062] Referring to Fig. 6, when the passenger's buttocks apply a relatively large force to the right area of ​​the seat (20) (F1 <F2), 회전 프레임(200)이 우측으로 기울어지고, 우측 프레임(320)이 제2하부 연결축(350)을 중심으로 반시계 방향으로 회전하면서 제2상부 연결축(350)이 하강한다. 그리고 좌측 프레임(310)이 제1하부 연결축(330)을 중심으로 반시계 방향으로 회전하면서 제2상부 연결축(340)이 상승한다. 이때 회전 프레임은(200)은 좌측으로 동시에 이동한다.

[0063] Referring to Fig. 7, when the passenger's buttocks apply a relatively large force to the left area of ​​the seat (20) (F1>F2), the rotating frame (200) tilts to the left, and the left frame (310) rotates clockwise around the first lower connecting shaft (330) while the first upper connecting shaft (340) descends. In addition, the right frame (320) rotates clockwise around the second lower connecting shaft (350) while the second upper connecting shaft (360) descends. At this time, the rotating frame (200) moves to the right simultaneously.

[0064] Through the above-described process, the seat (20) rotates downwardly to the left or right in accordance with the movement of the passenger's hips. Specifically, when the passenger steps on the left pedal, a relatively large load is applied to the left area of ​​the seat (20), causing the left area of ​​the rotating frame (200) to descend and the right area to rise, simultaneously moving to the right.

[0065] And when the right pedal is pressed, a relatively large load is applied to the right area, so that the right area of ​​the rotating frame (200) descends and the left area rises, simultaneously moving to the left. As a result, the seat (20) and the passenger's buttocks are kept in close contact, so that the entire area of ​​the passenger's buttocks is supported with a uniform force, and the seat (20) moves left and right, thereby reducing interference between the seat (20) and the thighs, making pedaling easier.

[0066] In addition, the load applied to the sheet is first transmitted to the bottom of the support (21, 22) having a predetermined height and the contact point (P1, P2) of the supporter (210, 220), i.e., the support contact portion (212, 222) which is the bottom of the supporter (210, 220). Since the contact point (P1, P2) to which the load is transmitted is positioned lower than the reference line (L2) crossing the center of rotation of the rotation frame (200), the rotation frame (200) can rotate more smoothly.

[0067] In addition, it can stably maintain the close contact between the seat (20) and the passenger's buttocks, reduce the impact from the road surface, reduce the pain transmitted to the passenger's buttocks and waist, and increase the speed, thereby reducing the consumption of physical strength.

[0068] FIG. 8 is a drawing showing a structure for rotation of a sheet according to another embodiment of the present invention, viewed from the rear.

[0069] Referring to Fig. 8, a connecting bracket (25) is formed in the central region of the sheet (20). The connecting bracket (25) is positioned at the front or rear of the rotating frame (200), and an insertion hole (26) is formed at the bottom. A connecting pin (27) is inserted into the insertion hole (26). The connecting pin (27) connects the connecting bracket (25) and the rotating frame (200). The connecting bracket (25) restricts the range of movement of the sheet (20) and prevents the support (21, 22) from coming off.

[0070] The position of the connecting pin (27) may preferably be located at the center of rotation of the rotating frame (200).

[0071] The sheet receiving portion (28, 29) extends downward from the bottom surface of the sheet (20) to a predetermined length, and a space with an open bottom surface is formed inside.

[0072] The supports (21, 22) are located inside the sheet receiving portion (28, 29), and the upper end contacts the sheet (20) and the lower end contacts the rotating frame (200). The support contact points (P1, P2) where the supports (21, 22) and the rotating frame (200) come into contact are located lower than the reference line crossing the center of rotation of the rotating frame (200).

[0073] In the embodiment of FIG. 8, it is described that the sheet receiving portions (28, 29) are provided on each of the left and right sides of the sheet (20), but this is not limited thereto, and the sheet receiving portions (28, 29) may be formed on either of the left and right sides, and the supporters (210, 220) described in FIG. 1 may be provided on the other side.

[0074] FIG. 9 is a cross-sectional view of a structure for rotation of a sheet according to another embodiment of the present invention, viewed from the right side, and FIG. 10 is a rear view of the structure for rotation of the sheet of FIG. 9, viewed from the rear.

[0075] Referring to FIGS. 9 and 10, a structure (10) for rotation of a sheet includes a fixed frame (100), a rotation frame (200), and a rotation module (300).

[0076] The fixed frame (100) is a frame having a predetermined thickness and length, and can be fixedly connected to a saddle rail (30). A pair of fastening holes (101, 102) are formed in the fixed frame (100). The pair of fastening holes (101, 102) are arranged at a predetermined distance apart along the longitudinal direction of the fixed frame (100). The left fastening hole (101) is formed in the left area of ​​the fixed frame (100), and the right fastening hole (120) is formed in the right area of ​​the fixed frame (100).

[0077] The rotating frame (200) is a plate having a predetermined area and is located at the rear of the fixed frame (100). The rotating frame (200) is arranged so that its front face faces the rear of the fixed frame (100). The rotating frame (200) has a vertical height greater than that of the fixed frame (100), and its upper end is positioned higher than the upper end of the fixed frame (100), and its lower end is positioned lower than the lower end of the fixed frame (100). The length of the rotating frame (200) is provided to be shorter than the length of the fixed frame (100).

[0078] A pair of fastening holes (201, 202) are formed at the top of the rotating frame (200). The pair of fastening holes (201, 202) are spaced apart at a predetermined interval in the longitudinal direction of the rotating frame (200). The interval between the left fastening hole (201) and the right fastening hole (202) is provided to be narrower than the interval between the left fastening hole (101) and the right fastening hole (102) formed in the fixed frame (100).

[0079] Supporters (210, 220) are formed on the lower rear surface of the rotating frame (200). According to an embodiment, the supporters (210, 220) are formed as a pair and spaced apart at a predetermined interval. In an embodiment, the interval between the first supporter (210) and the second supporter (220) may be provided to be wider than the interval between the pair of fastening holes (201, 202). The first supporter (210) and the second supporter (220) have internal spaces (211, 212) with open upper surfaces. Each internal space (211, 212) has a predetermined depth.

[0080] A support (21, 22) having a predetermined height and having a circular shape is inserted into each of the first supporter (210) and the second supporter (220). The upper ends of the supporters (21, 22) protrude above the first supporter (210) and the second supporter (220). The supporters (21, 22) may be positioned higher than the upper end of the fixed frame (100) and lower than a pair of fastening holes (201, 202). The upper ends of the supporters (21, 22) are placed so that the lower end (20a) of the sheet (20) is in contact with each other.

[0081] The support contact portion (212, 222) with which the support (21, 22) comes into contact is provided as the bottom surface of the supporter (210, 220).

[0082] The rotation module (300) includes a left frame (310), a right frame (320), a first lower connecting shaft (330), a second lower connecting shaft (350), a first upper connecting shaft (340), and a second upper connecting shaft (360).

[0083] The left frame (310) connects the left area of ​​the fixed frame (100) and the left area of ​​the rotating frame (200). The lower part of the left frame (310) is connected to the fixed frame (100), and the upper part is connected to the rotating frame (200).

[0084] The right frame (320) connects the right area of ​​the fixed frame (100) and the right area of ​​the rotating frame (200). The lower part of the right frame (320) is connected to the right area of ​​the fixed frame (100), and the upper part is connected to the right area of ​​the rotating frame (200).

[0085] The first lower connecting shaft (330) is fixedly connected to the lower end of the left frame (310) and inserted into the first lower fastening hole (101) of the fixed frame (100). The left frame (310) can rotate around the first lower connecting shaft (330).

[0086] The first upper connecting shaft (340) is fixedly connected to the upper end of the left frame (310) and inserted into the first upper fastening hole (201) of the rotating frame (200). The left frame (310) can rotate around the first upper connecting shaft (340).

[0087] The second lower connecting shaft (350) is fixedly connected to the lower end of the right frame (320) and inserted into the second lower fastening hole (102) of the fixed frame (100). The right frame (320) can rotate around the second lower connecting shaft (350).

[0088] The second upper connecting shaft (360) is fixedly connected to the upper end of the right frame (320) and inserted into the second upper fastening hole (202) of the rotating frame (200). The right frame (320) can rotate around the second upper connecting shaft (360).

[0089] When a large force is applied to the right area of ​​the seat (20) while the passenger's buttocks are seated on the seat (20), the rotating frame (200) tilts to the right, the right frame (320) rotates counterclockwise around the second lower connecting shaft (350), and the left frame (310) rotates counterclockwise around the first lower connecting shaft (330). In addition, when a large force is applied to the left area of ​​the seat (20), the rotating frame (200) tilts to the left, the left frame (310) rotates clockwise around the first lower connecting shaft (330), and the right frame (320) rotates clockwise around the second lower connecting shaft (350).

[0090] In a structure (10) according to an embodiment of the present invention, a horizontal line (L1) crossing the contact point (P1, P2) which is the upper surface of the support (21, 22) where the lower end (20a) of the seat and the support (21, 22) come into contact is positioned lower than a reference line (L2) crossing the center of rotation of the rotating frame (200), so that the rotating frame (200) can rotate more gently and smoothly, and the seat (20) and the passenger's buttocks are maintained in close contact so that the entire area of ​​the passenger's buttocks is supported with a uniform force, thereby increasing the force transmission force.

[0091] In Fig. 10, it is preferable that the horizontal line (L1) crossing the contact points (P1, P2) of the supports (21, 22) be parallel to the reference line (L2) so that the load action is balanced, but the heights of the contact points (P1, P2) may be positioned differently from each other.

[0092] In the embodiment of Fig. 10, the upper portions of the supports (21, 22) may be interconnected to form the supports (21, 22) as one unit. At this time, a protruding projection may be formed in the downward direction on the left and right sides of the lower portion (20a) of the sheet to serve as a contact point (P1, P2).

[0093] FIGS. 11 and 12 are drawings showing the coupling relationship between a supporter (21) and a supporter (210) according to various embodiments of the present invention. For simplicity, only the supporter (21) and the receiving portion (210) among the supports (21, 22) and receiving portions (210, 220) may be shown.

[0094] First, referring to (A) of FIG. 11, an elastic body (230) is inserted into the space between the supporter (210) and the support (21). The elastic body (230) is provided between the inner surface of the supporter (210) and the outer surface of the supporter (21), and is provided along the circumference of the supporter (21). The elastic body (230) is made of an elastic material and is provided in a compressed state so that even when a load is applied to the upper portion of the supporter (21), the supporter (21) does not come into contact with the support contact portion (212), which is the bottom surface. The compression is a state in which pressure is applied so that the adhesive force at the contact surface is increased. In an embodiment, the elastic body (230) may be provided as a rubber packing.

[0095] The load applied to the support (21) is transmitted to the rotating frame (200) by causing the outer surface of the support (21) to contact the inner surface of the elastic body (230), and then the outer surface of the elastic body (230) to contact the support contact portion (212), which is the inner surface of the receiving portion (210).

[0096] In the city of Fig. 11(A), the elastic body (230) may be removed and the support (21) may be provided in a compressed state with the inner surface of the supporter (210) and the outer surface of the support (21).

[0097] As shown in the drawing of Fig. 11(A), when the contact surface between the outer surface of the elastic body (230) and the inner surface of the receiving portion (210), which is the support contact portion (212), is not horizontal but vertical, the contact point that is lowest than the reference line (L2) of the rotating frame (200) is set as the contact point of the support (21). That is, among the contact surfaces where the inner surface of the receiving portion (210) and the outer surface of the elastic body (230) come into contact, the contact point at the lowest position may be the support contact portion (212). The elastic body (230) may be a support.

[0098] Referring to (B) of FIG. 11, an elastic body (240) may be inserted between the lower end of the support (21) and the bottom surface of the supporter (210). The bottom surface of the support (21) may contact the upper surface of the elastic body (240), and then the bottom surface of the elastic body (240) may contact the support contact portion (212). In an embodiment, the elastic body (240) is provided as a rubber material, and the elastic body (240) may allow the support (21) to have elasticity in the vertical direction. The contact point of the support (21) may be the bottom surface of the elastic body (240) and the support contact portion (212), which is the bottom surface of the receiving portion (210). The load applied to the support (21) may be transmitted to the support contact portion (212), which is the bottom surface of the receiving portion (210). The elastic body (240) may be a support.

[0099] Referring to (C) of FIG. 11, a separate intermediate supporter (251) may be provided on the side of the supporter (210), and the intermediate supporter (251) may be provided by combining an elastic body (252) in a compressed state. The support (21) is inserted into the inner side of the intermediate supporter (251). The bottom surface of the intermediate supporter (251) is maintained spaced apart from the bottom surface of the supporter (210), and the bottom surface of the supporter (21) may be in contact with the bottom surface of the intermediate supporter (251). In the case where the lower surface of the elastic body (252) is positioned higher than the bottom surface of the supporter (21) as in the embodiment, the bottom surface of the intermediate supporter (251), which is the contact point of the supporter (21), may be the support contact portion. In another embodiment, when the lowest point of the elastic body (252) is positioned lower than the bottom surface of the support (21), the lowest point of the elastic body (252) may be the support contact portion (212). The elastic body (252) may be the support.

[0100] Referring to (D) of FIG. 11, the upper end of the intermediate supporter (260) may be installed to be hooked onto the upper end of the supporter (210) so that a tensile force is applied to the intermediate supporter (260). To this end, the upper end of the intermediate supporter (260) may have a larger diameter than the upper end of the supporter (210). In this case, the support contact portion may be the bottom surface of the intermediate supporter (260).

[0101] Referring to (E) of FIG. 11, the supporter (210) may be arranged such that its central axis direction is inclined at a predetermined angle. The supporter (21) may contact the inclined bottom surface of the supporter (210). According to an embodiment, the supporter (21) is provided with a pointed bottom and may be in point contact with the bottom surface of the supporter (210). A load applied to the supporter (21) acts on the bottom surface of the supporter (210). The supporter contact portion (212) and the supports (21, 22) may be in point contact.

[0102] Referring to (F) of FIG. 11, a fluid (290) may be provided inside the supporter (210). A portion of the supporter (21) is inserted into the inside of the supporter (210). The fluid (290) is pressurized by the load applied to the supporter (21), and the load applied to the supporter (21) may be transmitted to the supporter contact portion (212), which is the bottom surface of the receiving portion (210). This is the principle of a fluid pump, in which the supporter (210) acts as a cylinder and the supporter (21) acts as a piston. In addition to the fluid, a material such as a liquid, compressed gas, semi-solid, powder, or adhesive, which can transmit the load applied to the supporter (21) to the supporter contact portion (212), may also be provided.

[0103] According to the city of FIG. 11, the rotating frame (200) of the structure for the rotation of the sheet may be provided with a support (21, 22) that contacts a support contact portion (212, 222) located below a reference line (L2) crossing the rotation center of the rotating frame (200).

[0104] FIG. 12 is a drawing showing the coupling relationship between a supporter (21) and a supporter (210) according to another embodiment of the present invention.

[0105] Referring to (A) of Fig. 12, the support (21) can be integrally connected to the supporter (210). For example, the support (21) and the supporter (210) can be integrally connected by welding. The support (21) can be connected to the receiving portion (210) so as to be inclined in the left-right direction, as shown in Fig. 11 (E).

[0106] Referring to (B) of FIG. 12, an elastic body (270) may be integrally connected between the lower portion of the support (21) and the supporter (210). A coil spring or a plate spring may be used as the elastic body (270). In the embodiment, a coil spring is provided. The support (21) may move up and down and left and right by the elastic body (270). The elastic body (270) may be a support.

[0107] Referring to (C) of Fig. 12, a wire spring (281) can be integrally connected between the lower portion of the support (21) and the supporter (210). By connecting the wire spring (281), the upper portion of the support (21) can move left and right.

[0108] Referring to Fig. 12(D), the supports (21, 22) have a “T” shape and the bottom surface can be connected to the support contact portion (212, 222) of the rotating frame (200) by welding or the like. In an embodiment, the bottom surface of the supports (21, 22) can be integrally connected to the support contact portion (222). The upper portion of the supports (21, 22) can be in contact with the bottom surface of the sheet.

[0109] Referring to Fig. 12(E), there is an embodiment in which the upper portions of the support members (21, 22) in the shape of a circular bar are spaced apart from each other and the lower portions are in close contact and integrally connected to the support member contact portions (212, 222).

[0110] The location of the connecting portion can be connected across the support contact portion (212, 222).

[0111] Referring to Fig. 12(F), the square plate-shaped support (21, 22) is formed integrally, and the bottom surface is integrally connected across the support contact portion (212, 222).

[0112] As shown in the illustrations of FIGS. 12(E) and 12(F), it is preferable that the lower portions of the supports (21, 22) be connected to the support contact portions (212, 222) based on the vertical line (dotted line) passing through the center of rotation of the rotating frame (200) so that the load action is balanced, but as shown in FIG. 12(D), the supports (21, 22) may be connected to the support contact portion (222) on either side.

[0113] According to the diagram 12, a rotating frame (200) of a structure for rotating a sheet may be provided with supports (21, 22) integrally connected to support contact portions (212, 222) positioned below a reference line (L2) crossing the center of rotation of the rotating frame (200). The shape of the supports (21, 22) connected to the support contact portions (212, 222) is a pillar shape or a similar shape, and has a predetermined height so that the load of the sheet applied to the upper portion of the supports (21, 22) is applied below the reference line (L2) of the center of rotation of the rotating frame.

[0114] FIG. 13 is a drawing showing a structure for rotation of a sheet according to another embodiment of the present invention, viewed from the rear.

[0115] Referring to Fig. 13, a rotating frame (500) is provided as a plate of a predetermined thickness, and an open receiving space (510) is formed at the front. The receiving space (510) has a circular arc shape rounded at a predetermined curvature centered on the rotation axis (C1) of the rotating frame (500).

[0116] A pair of supporters (520, 530) are provided in the rotating frame (500). The supporters (520, 530) are provided in a space at a predetermined depth from the top of the rotating frame (500), into which the supports (21, 22) are inserted. The pair of supporters (520, 530) are formed at a predetermined distance apart from each other.

[0117] The front of the fixed frame (400) is fixedly connected to a saddle rail (not shown), and at least a portion of the front is inserted into the receiving space (510) of the rotating frame (500). The fixed frame (400) has a cross-sectional area smaller than the receiving space (510) and has a rounded arc shape with a curvature corresponding to the receiving space (510). A receiving groove (410) is formed on the upper surface of the fixed frame (400). The receiving groove (410) is formed at a predetermined depth from the upper surface of the fixed frame (400) and has an arc shape with a curvature corresponding to the fixed frame (400).

[0118] The rotation module (600) includes a cloud member (610). The cloud member (60) is provided in the receiving groove (410) of the fixed frame (400) and facilitates the rotation of the rotation frame (500) with respect to the fixed frame (400). According to an embodiment, the cloud member (610) may be provided with a cloud bearing or a roller. In the present embodiment, the provision of a cloud bearing as the cloud member (610) is described as an example. A plurality of cloud bearings (610) are provided and are arranged in a row along the longitudinal direction of the receiving groove (410).

[0119] The upper inner surface (511) of the rotating frame (500), which forms a receiving space (510), is placed on the upper end of the cloud bearing (610). The cloud bearing (610) makes rolling contact with the upper inner surface (511) of the rotating frame (500), thereby minimizing frictional force with the rotating frame (500). When a load is applied to the supports (21, 22), the rotating frame (500) can smoothly rotate relative to the fixed frame (400) by the cloud bearing (610).

[0120] A space is formed between the upper surface of the rotating frame (500) and the rotation center of the rotating frame (500). Supporters (520, 530) may be formed on the upper surface of the rotating frame (1200). The supporters (520, 530) may be formed in pairs. According to an embodiment, one supporter (530) may be located in the left area of ​​the rotating frame (500), and the other supporter (520) may be located in the right area of ​​the rotating frame (500). The supporters (520, 530) may be formed at both ends of the rotating frame (500). According to an embodiment, the supporters (520, 530) may be provided in the shape of a pipe with a predetermined diameter and an open upper surface to a predetermined depth.

[0121] In the internal space of the supporter (520, 530), a support (21, 22) having a predetermined height in the form of a circular rod can be inserted.

[0122] The height of the center of rotation (C1) of the rotating frame (500) is positioned higher than the upper surface of the support (21, 22). This allows the rotating frame (1200) to rotate more gently and smoothly.

[0123] FIG. 14 is a drawing showing a structure for rotation of a sheet according to another embodiment of the present invention, viewed from the rear.

[0124] Referring to Fig. 14, the rotating frame (700) is provided as a plate of a predetermined thickness, and a first receiving space (710) and a second receiving space (720) are formed. The first receiving space (710) and the second receiving space (720) are positioned at a predetermined distance apart from each other on the rotation path of the rotating frame (700) and have a curvature corresponding to the rotation path of the rotating frame (700).

[0125] A pair of supporters (730, 740) are provided on the rotating frame (700). The supporters (730, 740) have supports (21, 22) inserted into a space provided at a predetermined depth from the top of the rotating frame (700). The bottom surface of the pair of supporters (730, 740) can be positioned between the first receiving space (710) and the second receiving space (720).

[0126] The fixed frame (800) is located in front of the rotating frame (700) and is provided as a plate having a larger width than the rotating frame (700).

[0127] The rotation module (900) includes rotation guides (910, 920). The rotation guides (910, 920) are provided in pairs, one each positioned in the first receiving space (710) and the second receiving space (720). The rotation guides (910, 920) are provided in a predetermined length, and one end is fixedly connected to a fixed frame (800).

[0128] When a load is applied to the support (21, 22), the rotating frame (700) can rotate relative to the fixed frame (800) about the rotating axis (C1) while being supported by the rotating guide (910, 920).

[0129] According to an embodiment, the rotation guide (910, 920) includes a rotation shaft (911, 921) and a rotation roller (912, 922) which is a (cloud member).

[0130] The pivot shaft (911, 912) is provided in a predetermined length and one end is fixedly connected to the fixed frame (800). The pivot roller (912, 922) has a cylindrical shape, and the pivot shaft (911, 921) is inserted inside. The pivot roller (912, 922) is capable of relative rotation with respect to the pivot shaft (911, 912).

[0131] The inner surfaces (711, 721) of the first receiving space (710) and the second receiving space (720) are in contact with the outer surfaces of the rotation rollers (912, 922). By the rotation of the rotation rollers (912, 922), the rotation frame (700) can rotate smoothly around the rotation axis (C1).

[0132] The outer surface (711, 721) of Fig. 14 may form a plane in the tangential direction, or may be formed by combining an elliptical arc or a plane and a curved surface. In this case, the reference line crossing the center of rotation of the rotating frame (700) is a horizontal line when the vertical rotation angle of the rotating frame (700) is 0 degrees.

[0133] The structure for the rotation of the seat according to the city of FIGS. 13 and 14 is configured such that a space is provided between the upper surface of the rotating frame (500, 700) and a reference line crossing the center of rotation (C) of the rotating frame (500, 700). When the seat is installed in the space and the center of rotation (C) of the rotating frame (500, 700) is positioned on the upper portion of the seat surface, the seat (20) moves inward while simultaneously downward, so that interference between the thigh and the seat is reduced, making pedaling easier and reducing pain caused by friction between the seat surface and the buttocks.

[0134] The structure (10) according to the drawings 13 and 14 includes the rotating frame which is positioned on the upper part of the fixed frame and is relatively rotatable within a predetermined range, and a space may be provided between the upper part of the rotating frame and a reference line crossing the center of rotation of the rotating frame. A seat may be provided in the space. According to the embodiments of FIGS. 1, 8, 10, 13, and 14, the rotating frame (200) of the structure for the rotation of the seat may be provided with a support (21, 22) so that a load is applied to the lower part of the reference line crossing the center of rotation of the rotating frame (200).

[0135] Additionally, the supports (21, 22) may be provided below the reference line of the center of rotation of the rotating frame (200). Preferably, the supports (21, 22) are provided on the left and right sides of the vertical line passing through the center of the rotating frame (200, 500, 700), but may be provided on either of the left and right sides.

[0136] The reference line crossing the center of rotation of the rotation frame (200, 500, 700) is a horizontal line when the up-down rotation angle of the rotation frame (200, 500, 700) is “0” degrees.

[0137]

[0138] While the present invention has been described in detail using preferred embodiments, the scope of the present invention is not limited to the specific embodiments described above, and should be interpreted in accordance with the appended claims. Furthermore, those skilled in the art will appreciate that numerous modifications and variations are possible without departing from the scope of the present invention.

[0139] The structure supporting the seat according to the present invention can support the seat so that the seat can rotate according to the movement of the hips of a bicycle rider.

Claims

1. Fixed frame; and Including a rotating frame capable of relative rotation with respect to the fixed frame about a rotation axis, A structure for rotation of a sheet, wherein a support is provided at a support contact portion located below a reference line crossing the center of rotation of the above-mentioned rotating frame.

2. In paragraph 1, The above support is a structure for rotation of a sheet that comes into contact with the above support contact portion.

3. In paragraph 1, The above support is a structure for rotation of a sheet integrally connected to the above support contact portion.

4. In paragraph 1, The above support is a structure for rotation of a sheet positioned below the reference line.

5. In paragraph 1, A left frame having a lower portion connected to the left area of ​​the fixed frame by a first lower connecting shaft and an upper portion connected to the left area of ​​the rotating frame; and Further comprising a right frame, the lower part of which is connected to the right area of ​​the fixed frame by a second lower connecting shaft, and the upper part of which connects the right area of ​​the rotating frame, The above rotation axis is A first upper connecting shaft connecting the upper part of the left frame and the left area of ​​the rotating frame, and positioned relatively to the right of the first lower connecting shaft; and A structure for rotation of a sheet, which connects the upper part of the right frame and the right area of ​​the rotation frame, and includes a second upper connecting axis located relatively to the left of the second lower connecting axis.

6. Fixed frame; and Including a rotating frame capable of relative rotation with respect to the above fixed frame, A structure for rotation of a sheet in which a space is provided between a reference line crossing the center of rotation of the above-mentioned rotating frame and the upper surface of the above-mentioned rotating frame.

7. In paragraph 6, A structure for rotation of a sheet in which a cloud member is provided between the fixed frame and the rotating frame.

8. Fixed frame; and Including a rotating frame capable of relative rotation with respect to the above fixed frame, A structure for the rotation of a sheet having a support provided so that a load is applied to the lower part of a reference line crossing the center of rotation of the above-mentioned rotating frame.

9. In paragraph 8, The above support is a structure for rotation of a sheet positioned below the reference line.

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