Claw mounting structure of bicycle frame

Abstract

The utility model provides a hook claw installation structure of a bicycle frame, and relates to the technical field of bicycles, the hook claw installation structure comprises a rear frame and a hook claw body, one end of the rear frame is provided with an installation block, one side of the installation block is provided with a wedging groove, the hook claw body comprises a hook block and a hook body, the hook block is matched with the wedging groove, and the hook block is matched with the wedging groove. The hook body is rotationally connected to the lower part of the hook block; a side wing is arranged at one end of the mounting block, a plurality of groups of first fixing holes are formed in the side wing at equal included angles, and a mounting bulge is arranged above one end of the hook body; the hook block of the hook claw body is installed through the installation block of the rear frame and the wedging groove in the installation block, the hook body below the hook block is used for installing a transmission, after the hook block is fixed, when the installation angle of the transmission needs to be adjusted, the hook body can be rotated, and the installation angle is adjusted. The second fixing holes of the installation protrusions are matched with screws to be fixed to the first fixing holes with the corresponding angles in the side wings, the angles of the hook body and the transmission can be fixed, and different requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to a hook installation structure of a bicycle frame. Background Art

[0002] The frame hook of a self-made bicycle is also called the tail hook. It is a key component located at the rear wheel of a bicycle. Its main functions include: connecting and fixing the chain of the rear wheel to ensure that the rear wheel of the bicycle can operate normally; installing the rear derailleur so that the bicycle can adjust the gear ratio according to the needs of the rider to adapt to different riding conditions; serving as a carrier for the tension adjustment screw of the derailleur; playing a buffering role in unexpected situations, such as when falling, the tail hook can bend or break to absorb the impact force, thereby protecting the derailleur and frame from damage; reducing the cost of frame maintenance. If the tail hook is damaged in a serious collision, a new tail hook can be replaced alone without replacing the entire frame, thereby saving maintenance costs. The tail hook is usually made of materials such as aluminum alloy and has a certain toughness and deformation ability, so that it can provide a certain protection when it is hit;

[0003] Dropouts are generally not universal. Different bicycles have different corresponding dropouts due to different rear frames. The dropouts are generally installed in mounting grooves of the rear frame by bolts. The mounting grooves match the shape of the dropouts. The angle of the dropouts cannot be adjusted after being fixed. Therefore, when installing a transmission that requires different mounting angles, it is necessary to select a corresponding dropout. After being fixed, the mounting angle cannot be adjusted by the dropouts. Therefore, the utility model proposes a dropout mounting structure for a bicycle frame to solve the problems existing in the prior art. Utility Model Content

[0004] In view of the above problems, the utility model provides a hook mounting structure for a bicycle frame, which can fix the angles of the hook body and the transmission to meet different installation requirements.

[0005] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a hook installation structure of a bicycle frame, comprising a rear frame and a hook body, one end of the rear frame is provided with a mounting block, and one side of the mounting block is provided with a fitting groove, the hook body comprises a hook block and a hook body, the hook block is adapted to the fitting groove, and the hook body is rotatably connected below the hook block;

[0006] A side wing is provided at one end of the mounting block, and a first fixing hole is provided on the side wing, and a plurality of groups of the first fixing holes are provided at equal angles. A mounting protrusion is provided above one end of the hook body, and a second fixing hole is provided on the mounting protrusion, and the second fixing hole is fixed to the first fixing hole by screws.

[0007] A further improvement is that a first screw hole is provided at the upper and lower parts of one end inside the fitting groove, a second screw hole is provided at the upper and lower parts of one end inside the hook block, and the first screw hole and the second screw hole are fixed by a screw rod.

[0008] A further improvement is that a limiting protrusion is provided on the front side of the fitting groove away from one end of the first screw hole, and the limiting protrusion is used to limit the front side of the hook block.

[0009] A further improvement is that a first shaft groove is provided at the bottom of the mounting block, and a second shaft groove is provided at the bottom of the hook block, and the first shaft groove corresponds to the second shaft groove.

[0010] A further improvement is that a connecting hole is provided at the lower part of the hook body, and the connecting hole is used for the installation of the transmission.

[0011] A further improvement is that the bottom of the hook block and the top of the hook body are both provided with step parts, and the two groups of step parts are adapted to each other, a rotating shaft is provided on the step part on the rear side, and an axial hole is provided on the step part on the front side, and the rotating shaft passes through the axial hole.

[0012] A further improvement is that a fixing plate is provided on the front side of the rotating shaft, and the diameter of the fixing plate is larger than the diameter of the shaft hole, and the fixing plate and the rotating shaft are fixed by fastening bolts.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model installs the hook block of the hook claw body through the mounting block of the rear frame and the fitting groove thereon. The hook body below the hook block is used to install the transmission. After the hook block is fixed, when the transmission installation angle needs to be adjusted, the hook body can be rotated. After adjusting the angle, the second fixing hole of the mounting protrusion is fixed with the screw of the first fixing hole of the corresponding angle on the side wing, so that the angle of the hook body and the transmission can be fixed to meet different installation needs.

[0015] 2. The hook block of the utility model is fixed at two points by two sets of second screw holes and the first screw holes inside the fitting groove with screws, and is limited to the front side of the hook block at another point by a limiting protrusion, thereby fixing the hook block at three points, which is more firm and not easy to loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the utility model;

[0017] Figure 2 It is a schematic diagram of the rear frame of the utility model;

[0018] Figure 3 It is a schematic diagram of the hook claw body of the utility model.

[0019] Among them: 1. rear frame; 2. mounting block; 3. fitting groove; 4. hook block; 5. hook body; 6. side wing; 7. first fixing hole; 8. mounting protrusion; 9. second fixing hole; 10. first screw hole; 11. second screw hole; 12. limiting protrusion; 13. first shaft groove; 14. second shaft groove; 15. connecting hole; 16. step piece; 17. fixing plate; 18. fastening bolt. DETAILED DESCRIPTION

[0020] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0021] Embodiment 1

[0022] according to Figure 1 , 2 As shown in Figures 3 and 4, this embodiment provides a hook mounting structure for a bicycle frame, comprising a rear frame 1 and a hook body, wherein one end of the rear frame 1 is provided with a mounting block 2, and one side of the mounting block 2 is provided with a fitting groove 3, the hook body comprises a hook block 4 and a hook body 5, the hook block 4 is adapted to the fitting groove 3, and the hook body 5 is rotatably connected to the lower side of the hook block 4;

[0023] One end of the mounting block 2 is provided with a side wing 6, and the side wing 6 is provided with a first fixing hole 7, and the first fixing holes 7 are provided in multiple groups at equal angles. A mounting protrusion 8 is provided above one end of the hook body 5, and the mounting protrusion 8 is provided with a second fixing hole 9, and the second fixing hole 9 is fixed to the first fixing hole 7 by screws. When in use, the hook block 4 of the hook claw body is installed through the mounting block 2 of the rear frame 1 and the matching groove 3 thereon, and the hook body 5 under the hook block 4 is used to install the transmission. After fixing the hook block 4, when the transmission installation angle needs to be adjusted, the hook body 5 can be rotated. After adjusting the angle, the second fixing hole 9 of the mounting protrusion 8 is fixed with the screw to the first fixing hole 7 of the corresponding angle on the side wing 6, so that the angle of the hook body 5 and the transmission can be fixed to meet different installation needs.

[0024] A first screw hole 10 is provided at the upper and lower parts of one end of the fitting groove 3, and a second screw hole 11 is provided at the upper and lower parts of one end of the hook block 4, and the first screw hole 10 and the second screw hole 11 are fixed by a screw rod. A limiting protrusion 12 is provided at the front side of one end of the fitting groove 3 away from the first screw hole 10, and the limiting protrusion 12 is used to limit the front side of the hook block 4. The hook block 4 is fixed at two points with the first screw hole 10 in the fitting groove 3 by two groups of second screw holes 11, and is limited to the front side of the hook block 4 at another point by the limiting protrusion 12, thereby fixing the hook block 4 at three points, which is more secure.

[0025] The bottom of the mounting block 2 is provided with a first shaft groove 13, and the bottom of the hook block 4 is provided with a second shaft groove 14, and the first shaft groove 13 corresponds to the second shaft groove 14. A shaft rod for adapting to a bicycle wheel.

[0026] A connection hole 15 is provided at the lower part of the hook body 5, and the connection hole 15 is used for the installation of the transmission. The transmission is installed through the connection hole 15 on the hook body 5. When the installation angle of the transmission needs to be adjusted, the hook body 5 can be rotated. After the angle is adjusted, the second fixing hole 9 of the mounting protrusion 8 is fixed with a screw to the first fixing hole 7 of the corresponding angle on the side wing 6, so that the angle of the hook body 5 and the transmission can be fixed.

[0027] Embodiment 2

[0028] according to Figure 1 , 2 As shown in Figures 3 and 4, this embodiment provides a hook mounting structure for a bicycle frame, comprising a rear frame 1 and a hook body, wherein one end of the rear frame 1 is provided with a mounting block 2, and one side of the mounting block 2 is provided with a fitting groove 3, the hook body comprises a hook block 4 and a hook body 5, the hook block 4 is adapted to the fitting groove 3, and the hook body 5 is rotatably connected to the lower side of the hook block 4;

[0029] One end of the mounting block 2 is provided with a side wing 6, and the side wing 6 is provided with a first fixing hole 7, and the first fixing holes 7 are provided in multiple groups at equal angles. A mounting protrusion 8 is provided above one end of the hook body 5, and the mounting protrusion 8 is provided with a second fixing hole 9, and the second fixing hole 9 is fixed to the first fixing hole 7 by screws. When in use, the hook block 4 of the hook claw body is installed through the mounting block 2 of the rear frame 1 and the matching groove 3 thereon, and the hook body 5 under the hook block 4 is used to install the transmission. After fixing the hook block 4, when the transmission installation angle needs to be adjusted, the hook body 5 can be rotated. After adjusting the angle, the second fixing hole 9 of the mounting protrusion 8 is fixed with the screw to the first fixing hole 7 of the corresponding angle on the side wing 6, so that the angle of the hook body 5 and the transmission can be fixed to meet different installation needs.

[0030] The bottom of the hook block 4 and the top of the hook body 5 are both provided with step pieces 16, and the two groups of step pieces 16 are adapted to each other. The step piece 16 on the rear side is provided with a rotating shaft, and the step piece on the front side is provided with an axial hole, and the rotating shaft passes through the axial hole. A fixing plate 17 is provided on the front side of the rotating shaft, and the diameter of the fixing plate 17 is larger than the diameter of the axial hole. The fixing plate 17 and the rotating shaft are fixed by a fastening bolt 18. When in use, the two groups of step pieces 16 are overlapped, the rotating shaft passes through the axial hole, and the fixing plate 17 is installed on the rotating shaft by the fastening bolt 18, so that the hook block 4 and the hook body 5 are rotatably connected.

[0031] The hook claw installation structure of the bicycle frame is used to install the hook claw body's hook block 4 through the mounting block 2 of the rear frame 1 and the fitting groove 3 thereon. The hook body 5 below the hook block 4 is used to install the transmission. After fixing the hook block 4, when the transmission installation angle needs to be adjusted, the hook body 5 can be rotated. After adjusting the angle, the second fixing hole 9 of the mounting protrusion 8 is fixed with a screw to the first fixing hole 7 of the corresponding angle on the side wing 6, so that the hook body 5 and the transmission angle can be fixed to meet different installation needs. In addition, the hook block 4 of this product is fixed at two points by two groups of second screw holes 11 and the first screw hole 10 inside the fitting groove 3, and is limited to the front side of the hook block 4 at another point by the limiting protrusion 12, thereby fixing the hook block 4 at three points, which is more firm and not easy to loosen.

[0032] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A hook mounting structure for a bicycle frame, comprising a rear frame (1) and a hook body, characterized in that: A mounting block (2) is provided at one end of the rear frame (1), and a fitting groove (3) is provided on one side of the mounting block (2); the hook claw body comprises a hook block (4) and a hook body (5); the hook block (4) is adapted to the fitting groove (3), and the hook body (5) is rotatably connected to the lower side of the hook block (4); A side wing (6) is provided at one end of the mounting block (2), and a first fixing hole (7) is provided on the side wing (6), and a plurality of groups of the first fixing holes (7) are provided at equal angles. A mounting protrusion (8) is provided above one end of the hook body (5), and a second fixing hole (9) is provided on the mounting protrusion (8), and the second fixing hole (9) and the first fixing hole (7) are fixed by screws.

2. The hook mounting structure of a bicycle frame according to claim 1, characterized in that: A first screw hole (10) is provided at the upper and lower parts of one end of the fitting groove (3), and a second screw hole (11) is provided at the upper and lower parts of one end of the hook block (4). The first screw hole (10) and the second screw hole (11) are fixed by a screw rod.

3. The hook mounting structure of a bicycle frame according to claim 2, characterized in that: A limiting protrusion (12) is provided on the front side of one end of the fitting groove (3) away from the first screw hole (10), and the limiting protrusion (12) is used to limit the front side of the hook block (4).

4. The hook mounting structure of a bicycle frame according to claim 1, characterized in that: The bottom of the mounting block (2) is provided with a first shaft groove (13), and the bottom of the hook block (4) is provided with a second shaft groove (14), and the first shaft groove (13) corresponds to the second shaft groove (14).

5. The hook mounting structure of a bicycle frame according to claim 4, characterized in that: A connecting hole (15) is provided at the lower part of the hook body (5), and the connecting hole (15) is used for the installation of the transmission.

6. The hook mounting structure of a bicycle frame according to claim 1, characterized in that: The bottom of the hook block (4) and the top of the hook body (5) are both provided with step pieces (16), and the two groups of step pieces (16) are matched with each other, the step piece (16) on the rear side is provided with a rotating shaft, and the step piece on the front side is provided with an axial hole, and the rotating shaft passes through the axial hole.

7. The hook mounting structure of a bicycle frame according to claim 6, characterized in that: A fixing plate (17) is provided on the front side of the rotating shaft, and the diameter of the fixing plate (17) is larger than the diameter of the shaft hole. The fixing plate (17) and the rotating shaft are fixed by a fastening bolt (18).

Images