阅读说明：本技术 用于选择性地定位轮子的枢轴的装置 (Device for selectively positioning the pivot of a wheel ) 是由 马里亚诺·罗曼 恩里科·菲德尔法蒂 于 2021-04-28 设计创作，主要内容包括：用于选择性地定位轮子的枢轴的装置包括由后撑条构成的框架,后撑条设置有第一对第一斜后链撑条,分别通过三角形支撑件各自连接到第二对两个第二水平后链撑条,变速器钩可与第一链撑条和第二链撑条相关联。在支撑件的第一外表面处和第一内表面处设置有第一外部座和第二内部座,分别用于第一外部适配器和第二内部适配器的轴向且可移除的定位。第一外部适配器和第二内部适配器分别具有第二孔和第三孔,第二孔和第三孔两者均平滑并且适于确定变速器钩的两种不同的轴向布置,以及因此确定轮子的枢轴相对于两个第一链撑条和第二链撑条的两种不同的轴向布置,并且适于保持变速器钩的顺时针旋转被锁定,并且仅自由地逆时针旋转通过选定的弧度。(The device for selectively positioning the pivot of the wheel comprises a frame constituted by rear stays provided with a first pair of first inclined rear chain stays respectively connected to a second pair of two second horizontal rear chain stays by triangular supports, a derailleur hook being associable with the first and second chain stays. At the first outer surface and at the first inner surface of the support there are provided a first outer seat and a second inner seat for the axial and removable positioning of the first external adapter and the second internal adapter, respectively. The first external adapter and the second internal adapter have a second hole and a third hole, respectively, both smooth and adapted to determine two different axial arrangements of the transmission hook, and therefore of the pivot of the wheel, with respect to the two first chain stays and the second chain stay, and to keep the transmission hook locked for clockwise rotation and free to rotate only counterclockwise through a selected arc.)

1. Device (1) for selectively positioning the pivot (100) of the wheel of a bicycle, comprising a frame constituted by a rear stay (2), the rear stay (2) being provided with a first pair of first inclined rear chain stays (3a, 3b), the first pair of first inclined rear chain stays (3a, 3b) being respectively connected to a second pair of two second horizontal rear chain stays (4a, 4b) by means of triangular supports (5a, 5b), a derailleur hook (14) being associable with the first (3a) and second (4a) chain stays, characterized in that a first outer seat (8) and a second inner seat (9) are provided at a first outer surface (7a) and at a first inner surface (7b) of the support (5a), the first outer seat (8) and the second inner seat (9) being respectively for an axial and removable first external adapter (10a) and a second internal adapter (10b) -positioning, and the first external adapter (10a) and the second internal adapter (10b) having a second hole (12) and a third hole (23), respectively, both the second hole (12) and the third hole (23) being smooth and adapted to determine two different axial arrangements of the transmission hook (14), and therefore of the pivot (100) of the wheel, with respect to the two first and second chain stays (3a, 4a), and to keep the transmission hook (14) locked for clockwise rotation and free to rotate only counterclockwise through a selected arc.

2. Device (1) according to claim 1, characterized in that said first chain stay (3b) and said second chain stay (4b) are connected at a second inner surface (30b) and a second outer surface (30a) by said triangular supports (5b), -at said second inner surface (30b) and said second outer surface (30a) there are a third outer seat (31) and a fourth inner seat (32), said third external seat (31) and said fourth internal seat (32) being for the removable positioning of a third external adapter (33a) and a fourth internal adapter (33b), respectively, the third external adapter (33a) and the fourth internal adapter (33b) are adapted to determine two different axial arrangements of the wheel with respect to the two first and second chain stays (3a, 3b, 4a, 4 b).

3. Device (1) according to claim 1, characterized in that said first and second chain stays or prongs (3a, 3b, 4a, 4b) have a first hole (6a, 6b) at the vertex of said triangular support (5a, 5b), said first hole (6a, 6b) having a figure-8 shape, said first hole (6a) forming two circles (106a, 106b), said two circles (106a, 106b) being continuous, mutually identical and partially intersecting each other, and both having a smooth inner surface, which in turn determine two different conditions for the arrangement of said transmission hook (14) and said pivot (100) of the wheel.

4. Device (1) according to claim 3, characterized in that said first external adapter (10a) has a first head (11a), said first head (11a) having a substantially oval plan shape, said first head (11a) being provided with a second hole (12) which is unthreaded and eccentric and has a diameter substantially equal to the diameter of said sleeve (13) of said derailleur hook (14), said second hole (12) having a diameter substantially equal to the diameter of one of said circles (106a, 106b), a first stem (15) projecting on the side of said first head (11a) opposite to the side provided with said second hole (12), the first stem thus being axially offset with respect to said second hole (12), said first stem (15) being shaped so that it can be selectively inserted into said two external adapters (10a) after a rotation of 180 ° of said first external adapter (11a) One of the circles (106a, 106b) so as to define two different configurations in which two different axial arrangements of the pivot (100) of the wheel with respect to the support (5a) of the first chain stay (3a) can be determined.

5. Device (1) according to claim 3, characterized in that said second inner seat (9) has a substantially trapezium shape with a longer parallel side (24), following the shape of the lower side of said support (5a), a shorter parallel side (25) with a given inclination of the longer parallel side (24) facing downwards from the vertex of said support (5a) towards the second chain stay (4a), and an inclined side (26), said inclined side (26) being intended for the connection between said longer parallel side (24) and said shorter parallel side (25), said inclined side (26) being directed in the direction of said second chain stay (4 a).

6. Device (1) according to claim 5, characterized in that said second internal adapter (10b) is constituted by a plate (22) shaped complementarily to said second internal seat (9), said plate (22) having a substantially flat shape and being provided with said third hole (23) which is not threaded and eccentric and which has a diameter substantially equal to the diameter of said sleeve (13) and substantially equal to the diameter of one of said circles (106a, 106b), a raised portion (27) shaped like a parallelepiped projecting from said plate (22), said raised portion (27) being parallel to said inclined side (26) so as to partially affect said shorter parallel side (25), from which a pin (28) in turn projects substantially adjacent to the connection between said inclined side (26) and said shorter parallel side (25), the pin is adapted to retain the shifter hook (14) locked in a clockwise rotational direction and only free to rotate in a counterclockwise direction through a selected arc once the shifter hook (14) is installed.

7. Device (1) according to claim 6, characterized in that when said first external adapter (10a) is rotated by 180 °, said second internal adapter (10b) is arranged differently with respect to said first internal seat (9) and at the same time said pin (28) is moved both axially and radially with respect to said first hole (6a) so as to maintain a precise distance from the axis of said pivot (100) of the wheel and allow the front arm (29) of said derailleur hook (14) to abut against said pin (28) when rotated anticlockwise.

8. Device (1) according to claim 2, characterized in that said third outer seat (31) and said fourth inner seat (32) for the axial and removable positioning of said third external adapter (33a) and said fourth internal adapter (33b), respectively, are provided at said second outer surface (30a) and at said second inner surface (30b) of said support (5b), said support (5b) being connected to said first chain stay (3b) and to said second chain stay (4b), said fourth internal adapter (33b) being substantially C-shaped so as to form, in an outer peripheral region for connecting wings (34a, 34b), a substantially planar portion (35), said substantially planar portions (35) being connected by teeth (36) in the direction of said second chain stay (4b), said tooth projecting towards a first chain stay (3b), said fourth internal seat (32) housing said fourth internal adapter (33b) inside it and having a fifth seat (38) in the direction of said first chain stay (3b), said fifth seat (38) being adapted to temporarily house said complementary-shaped tooth (36), there being a sixth seat (39) adjacent to said fifth seat (38), said sixth seat (39) being similar to said fifth seat and being adapted to allow the selective positioning of said tooth (36), which translates said fourth internal adapter (33b) in the direction of said second chain stay (4 b).

9. Device (1) according to claim 8, characterized in that a gap is formed between said wings (34a, 34b) of said fourth internal adapter (33b) and which allows to avoid blocking said first hole (6b) whatever the position assumed by said fourth internal adapter (33b), said first hole (6b) also having a figure 8 shape, so as to form two consecutive and partially intersecting circles (106c, 106d), said circles (106c, 106d) being mutually identical and both having smooth inner surfaces, which in turn determine two different conditions for the positioning of said pivot (100).

10. Device (1) according to claim 8, characterized in that said third adapter (33a) has a rounded triangular shape and is removably insertable in said third outer seat (31), one vertex of said third adapter (33a) being directed towards said first chain stay (3b), a fourth hole (40) being provided on said one vertex of said third adapter (33a), and said fourth hole (40) accommodating a screw (41) for the temporary insertion of said screw (41) at a fifth non-threaded through hole (42), said fifth non-threaded through hole (42) being provided in said fourth inner seat (32) in a region below said fifth seat (38) for said tooth (36), said screw (41) being screwed onto a complementary threaded sixth hole (43) in a region below said fifth seat (38) when said tooth (36) is inserted in said fifth seat (38), a sixth hole of said complementary thread is provided in said fourth internal adapter (33 b).

11. Device (1) according to claim 10, characterized in that moving said fourth internal adapter (33b) so that said tooth (36) is arranged in said sixth seat (39) causes said sixth hole (43) to move also simultaneously, said screw (41) being thus fixed to a complementarily threaded seventh hole (44) provided in the region below said portion (35).

12. Device (1) according to claim 11, characterized in that said third external adapter (33a) is provided with an eighth hole (45) axially offset with respect to the intersection of the heights, and said eighth hole (45) is arranged in axial alignment with said circle (106c) or with said circle (106d), said circles (106a, 106b) and (106c, 106d) being axially aligned with each other, respectively, so that once the positioning of said first external adapter (10a) and said second internal adapter (10b) is defined, said third external adapter (33a) is also positioned so that said pivot (100) of said wheel is axially aligned with said circles (106a, 106c) or said circles (106b, 106 d).