Inner side adjusting type frame rear hook
By designing the rear hook of the inner adjustment frame, the structure of the inner movable parts and adjustment bolts is used to solve the messy and cumbersome operation problems caused by the existing outer adjustment, achieving a cleaner appearance and more convenient adjustment operation.
Patent Information
- Application Number
- CN202422025670.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-08-20
AI Technical Summary
The adjustment operation of the existing rear hook device of the frame is carried out on the outside, resulting in messy rear hook position, affecting the cleanliness of the vehicle's appearance, and different components are prone to interference during adjustment, resulting in cumbersome operation.
An inner adjustable frame rear hook is designed. By placing the movable parts on the inside, the L-shaped rear hook outer and inner sheets are adopted, and the adjustment bolts between the bar holes and the connecting holes are fixedly connected, so as to realize the front and rear displacement adjustment of the rear hook inner sheet.
The cleanliness of the rear hook of the frame is improved, interference between different components is avoided, adjustment operation is simplified, and the cleanliness and convenience of adjustment of the vehicle's appearance is improved.
Smart Images
Figure CN222859652U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bicycle structures, and particularly relates to an inner side adjustable frame rear hook. Background Art
[0002] Bicycles are one of the common means of transportation for people. In terms of structure, bicycles are composed of a frame, a seat assembly, a handlebar assembly, and front and rear wheels. A rear hook device is usually provided at the rear of the frame. The rear hook device is used to install and fix the rear wheel assembly of the bicycle. Specifically, the rear wheel axle of the rear wheel assembly is embedded in the rear hook and lock nuts are installed at both ends to fix the rear wheel axle to the rear of the frame. Considering the tension adjustment of the transmission chain / transmission belt, it is generally necessary to make the rear hook device have the ability to adjust the rear wheel axle forward and backward. In this way, when the transmission chain / transmission belt needs to be tensioned and adjusted, the tension is achieved by moving the position of the rear wheel assembly forward and backward to ensure a reliable transmission effect.
[0003] However, the existing frame rear hook device is adjusted on the outside, that is, the disassembly and assembly of the rear hook screws and bolts and the displacement of the rear hook are all performed on the outside. The characteristics of the aforementioned adjustment operation are determined by the structural characteristics of the existing rear hook device: the plate with the rear hook is arranged on the outside of the rear fork plate at the rear of the frame, so the adjustment and displacement can only be performed on the outside. This structure has the following defects: the frame position where the rear hook is located, that is, the rear end of the frame is relatively messy, affecting the neatness of the appearance of the whole vehicle. In addition to the rear wheel assembly, the rear hook position is also equipped with a ladder and brake assembly. When the existing rear hook device is adjusted forward and backward, interference is easily generated between different components, resulting in cumbersome adjustment operations.
[0004] In summary, it is necessary to develop and design an inner side adjustable frame rear hook device to solve the above-mentioned technical problems. Utility Model Content
[0005] The utility model aims to provide an inner side adjustable frame rear hook, which improves the neatness of the structure by placing movable parts on the inner side and avoids interference between different parts during the adjustment process.
[0006] The technical solution adopted by the utility model is: an inner side adjustable frame rear hook, comprising a left rear hook outer piece and a right rear hook outer piece which are relatively arranged in an L shape, a left rear hook inner piece is arranged on the inner side of the left rear hook outer piece, a right rear hook inner piece is arranged on the inner side of the right rear hook outer piece, a left hook is arranged at the rear part of the left rear hook inner piece, and a right hook is arranged at the rear part of the right rear hook inner piece; a plurality of transversely penetrating left connecting holes are arranged at the lower part of the left rear hook outer piece, a plurality of left sheet strip holes are arranged at corresponding positions on the left rear hook inner piece, and a left adjusting bolt is arranged between the left connecting hole and the left sheet strip hole, a plurality of transversely penetrating right connecting holes are arranged at the lower part of the right rear hook outer piece, a plurality of right sheet strip holes are arranged at corresponding positions on the right rear hook inner piece, and a right adjusting bolt is arranged between the right connecting hole and the right sheet strip hole.
[0007] Preferably, a left guide protrusion is provided on the inner side of the lower middle portion of the left rear hook outer piece, a left guide hole is provided in the middle portion of the left rear hook inner piece and the left guide protrusion is located in the left guide hole; a right guide protrusion is provided on the inner side of the lower middle portion of the right rear hook outer piece, a right guide hole is provided in the middle portion of the right rear hook inner piece and the right guide protrusion is located in the right guide hole.
[0008] Preferably, a limiting threaded hole is provided at the rear part of the left rear hook inner plate and passes forward to the left guide hole, a headless hexagon socket screw is provided in the limiting threaded hole and the front end of the headless hexagon socket screw abuts against the rear part of the left guide protrusion; a limiting threaded hole is provided at the rear part of the right rear hook inner plate and passes forward to the right guide hole, a headless hexagon socket screw is provided in the limiting threaded hole and the front end of the headless hexagon socket screw abuts against the rear part of the right guide protrusion.
[0009] Preferably, bosses for mounting brakes are provided at the top front and top rear of the left rear hook inner plate, and threaded holes are provided at the centers of the bosses.
[0010] Preferably, a groove for installing a vehicle ladder is provided in the middle of the lower outer side of the left rear hook outer plate, and mounting holes are provided at the front and rear of the groove.
[0011] Preferably, a connecting arm is installed at the upper top of the right rear hook outer piece through an adapter block, the lower part of the adapter block is detachably connected to the upper top of the right rear hook outer piece, and the upper part of the adapter block is detachably connected to the connecting arm.
[0012] Preferably, a left connecting portion is provided at the lower front end and the upper end of the left rear hook outer piece, and a right connecting portion is provided at the lower front end of the right rear hook outer piece and the upper end of the connecting arm.
[0013] The advantages and positive effects of the utility model are:
[0014] The utility model provides an inner side adjustable frame rear hook. Compared with the existing external rear hook device, the left rear hook inner plate in the utility model is located on the inner side of the left rear hook outer plate, and the right rear hook inner plate is located on the inner side of the right rear hook outer plate. The rear hook inner plate and rear hook outer plate on each side are fixedly connected by adjusting bolts in the bar holes and connecting holes on the side. Therefore, the utility model provides a new structural design for adjusting the rear hook from the inside. When it is necessary to adjust the front and rear position of the mobile rear wheel assembly to adjust the tension of the transmission chain / transmission belt, the left rear hook inner plate with the left hook and the right rear hook inner plate with the right hook are shifted forward and backward on the inside. Therefore, compared with the structure of the existing rear hook device, the rear hook in the utility model has a neater appearance, which is conducive to improving the neatness of the overall appearance of the bicycle.
[0015] On the other hand, since the inner adjustment displacement is realized, compared with the existing structure, when the rear hook of the frame of the utility model is adjusting the front and rear displacement of the rear wheel assembly, interference between the components located at the rear hook position is not easy to occur, which improves the convenience of the adjustment operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the structure of the utility model, from the right side viewing angle;
[0017] Figure 2 It is a schematic diagram of the structure of the utility model, from a left side perspective;
[0018] Figure 3 It is a schematic diagram of the structure of the utility model in the installation state.
[0019] In the figure:
[0020] 1. Right rear hook outer plate; 2. Right guide protrusion; 3. Right rear hook inner plate; 4. Right connecting part; 5. Right plate strip hole; 6. Right guide hole; 7. Right hook; 8. Right assembly hole; 9. Adapter block; 10. Connecting arm; 11. Left connecting part; 12. Groove; 13. Left connecting hole; 14. Mounting hole; 15. Left hook; 16. Left rear hook inner plate; 17. Boss; 18. Left rear hook outer plate; 19. Right connecting hole; 20. Left guide protrusion; 21. Left guide hole; 22. Left plate strip hole; 23. Left assembly hole; 24. Limit threaded hole; 25. Vertical fork; 26. Flat fork. DETAILED DESCRIPTION
[0021] In order to further understand the content, features and effects of the present invention, the following embodiments are given to explain in detail.
[0022] See also Figure 1 and Figure 2The inner side adjustable frame rear hook of the utility model comprises an L-shaped left rear hook outer piece 18 and a right rear hook outer piece 1 which are arranged opposite to each other. A left rear hook inner piece 16 is arranged on the inner side of the left rear hook outer piece 18, and a right rear hook inner piece 3 is arranged on the inner side of the right rear hook outer piece 1. As shown in the figure, the left rear hook outer piece 18, the right rear hook outer piece 1, the left rear hook inner piece 16 and the right rear hook inner piece 3 are each formed as a single body. An inner side groove for accommodating the left rear hook inner piece 16 is arranged on the inner side of the left rear hook outer piece 18, and an inner side groove for accommodating the right rear hook inner piece 3 is arranged on the inner side of the right rear hook outer piece 1.
[0023] A left hook 15 is provided at the rear of the left rear hook inner plate 16, and a right hook 7 is provided at the rear of the right rear hook inner plate 3. When installing the rear wheel assembly of the bicycle, the two ends of the rear wheel axle of the rear wheel assembly are respectively embedded upward into the grooves of the left hook 15 and the right hook 7, and then the lock nuts at both ends of the rear wheel are tightened.
[0024] A plurality of left connecting holes 13 are provided transversely through the lower portion of the left rear hook outer plate 16, a plurality of left plate strip holes 22 are provided at corresponding positions on the left rear hook inner plate 16, and a left adjusting bolt is provided between the left connecting holes 13 and the left plate strip holes 22. A plurality of right connecting holes 19 are provided transversely through the lower portion of the right rear hook outer plate 1, a plurality of right plate strip holes 5 are provided at corresponding positions on the right rear hook inner plate 3, and a right adjusting bolt is provided between the right connecting holes 19 and the right plate strip holes 5.
[0025] As shown in the figure, there are two groups of left-side connecting holes 13 and left-piece strip holes 22 on the left side, and two groups of right-side connecting holes 19 and right-piece strip holes 5 on the right side. When the left rear hook inner plate 16 and the right rear hook inner plate 3 need to be shifted forward and backward, it is only necessary to loosen the two left adjusting bolts and the two right adjusting bolts, move the left rear hook inner plate 16 and the right rear hook inner plate 3 to the appropriate positions, and then retighten the left adjusting bolts and the right adjusting bolts.
[0026] As shown in the figure, the left connecting hole 13 and the left strip hole 22 on the left side, and the right connecting hole 19 and the right strip hole 5 on the right side are all stepped holes, and accordingly, the nut of the left adjusting bolt is located in the left connecting hole 13, and the nut is located in the left strip hole 22, and the nut of the right adjusting bolt is located in the right connecting hole 19, and the nut is located in the right strip hole 5. In this way, the left adjusting bolt and the right adjusting bolt are both countersunk mounted, and no bulges are formed on the outer sides of the left rear hook outer piece 18 and the right rear hook outer piece 1, further ensuring the neatness of the appearance.
[0027] In this embodiment, a left guide protrusion 20 is provided on the inner side of the lower middle portion of the left rear hook outer plate 18, a left guide hole 21 is provided in the middle portion of the left rear hook inner plate 16 and the left guide protrusion 20 is located in the left guide hole 21; a right guide protrusion 2 is provided on the inner side of the lower middle portion of the right rear hook outer plate 1, a right guide hole 6 is provided in the middle portion of the right rear hook inner plate 3 and the right guide protrusion 2 is located in the right guide hole 6.
[0028] By providing the left guide protrusion 20 and the left guide hole 21, the right guide protrusion 2 and the right guide hole 6, the left rear hook outer plate 18 and the right rear hook outer plate 1 are more stable and less likely to shake when adjusting the front-back displacement. As shown in the figure, the left guide protrusion 20 and the right guide protrusion 2 are both square bosses, the left guide hole 21 and the right guide hole 6 are both rectangular holes, the height dimension of the guide protrusion 20 is equal to the width dimension of the left guide hole 21, and the height dimension of the right guide protrusion 2 is equal to the width dimension of the right guide hole 6.
[0029] In this embodiment, a limiting threaded hole 24 is provided at the rear part of the left rear hook inner plate 16, which passes forward to the left guide hole 21, and a headless hexagon socket screw is provided in the limiting threaded hole 24, and the front end of the headless hexagon socket screw abuts against the rear part of the left guide protrusion 20; a limiting threaded hole 24 is provided at the rear part of the right rear hook inner plate 3, which passes forward to the right guide hole 6, and a headless hexagon socket screw is provided in the limiting threaded hole 24, and the front end of the headless hexagon socket screw abuts against the rear part of the right guide protrusion 2.
[0030] The purpose of setting the limiting threaded hole 24 and the headless hexagon socket screw is to prevent the transmission chain / transmission belt from shifting forward when subjected to a momentary impact. When the transmission chain / transmission belt is subjected to a momentary impact, the rear wheel assembly will be subjected to an instantaneous forward pulling force, and accordingly, the left rear hook inner plate 16 and the right rear hook inner plate 3 integrated with the rear wheel axle will also be subjected to a forward pulling force at the same time. At this time, since the end of the headless hexagon socket screw abuts against the rear part of the corresponding guide protrusion, the aforementioned pulling force will not cause the left rear hook inner plate 16 and the right rear hook inner plate 3 to shift.
[0031] In this embodiment, bosses 17 for installing brakes are provided at the top front and top rear of the left rear hook inner plate 16, and a threaded hole is provided at the center of the bosses 17. The brake assembly is fixed to the two bosses 17 by screws.
[0032] In this embodiment, a groove 12 for installing a vehicle ladder is provided in the middle of the lower outer side of the left rear hook outer plate 18, and mounting holes 14 are provided at the front and rear of the groove 12. The main part of the vehicle ladder is embedded in the groove 12 and two front and rear screws are used to fix the vehicle ladder to the left rear hook outer plate 18.
[0033] As shown in the figure, a right-side assembly hole 8 is provided at the corner position of the left rear hook outer plate 18, and a left-side assembly hole 23 is provided at the corner position of the right rear hook outer plate 1. The right-side assembly hole 8 and the left-side assembly hole 23 are used to install the rear clothes hanger of the bicycle. Specifically, the lower ends of the left and right support rods of the rear clothes hanger are fixed with screws located in the right-side assembly hole 8 and the left-side assembly hole 23.
[0034] A connecting arm 10 is installed at the top of the upper portion of the right rear hook outer plate 1 through an adapter block 9, and the lower portion of the adapter block 9 is detachably connected to the top of the upper portion of the right rear hook outer plate 1, and the upper portion of the adapter block 9 is detachably connected to the connecting arm 10. Specifically, the adapter block 9 is fixedly connected to the right rear hook outer plate 1 and the connecting arm 10 by screws. The purpose of setting the adapter block 9 is that when the bicycle is driven by a transmission belt, since the transmission belt cannot be disconnected by disassembling the chain petals like a transmission chain, the adapter block 9 can be disassembled at this time, so that a breakpoint is formed, which makes it easier to install the transmission belt.
[0035] In this embodiment, a left connecting portion 11 is provided at the lower front end and the upper end of the left rear hook outer plate 18, and a right connecting portion 4 is provided at the lower front end of the right rear hook outer plate 1 and the upper end of the connecting arm 10. The left connecting portion 11 and the right connecting portion 4 are provided for connecting the frame rear hook device with the main part of the bicycle. Figure 3 As shown in the figure, the left connecting part 11 and the right connecting part 4 located at the front are plugged into the rear ends of the two metal tubes of the horizontal fork 26 and then welded and fixed, and the left connecting part 11 and the right connecting part 4 located at the upper part are plugged into the lower ends of the two metal tubes of the vertical fork 25 and then welded and fixed.
[0036] For application, please refer to Figure 3 , we can see that:
[0037] The left connecting part 11 and the right connecting part 4 at the front are plugged and connected with the rear ends of the two metal tubes of the flat fork 26, and then welded and fixed. The left connecting part 11 and the right connecting part 4 at the upper part are plugged and connected with the lower ends of the two metal tubes of the vertical fork 25, and then welded and fixed. Then, the rear hook of the frame is combined with the frame of the bicycle. The wheel axle of the rear wheel assembly is embedded in the grooves of the left hook 15 and the right hook 7, and the lock nuts at both ends of the rear wheel axle are used to tighten and lock. Then, the rear wheel assembly is installed on the frame. The headless hexagon socket screws are installed in the two limiting threaded holes 24 until the front ends of the headless hexagon socket screws contact the guide protrusions. The brake is installed on the boss 17, and the ladder is installed on the outside.
[0038] When the rear wheel assembly needs to be adjusted to move forward and backward, just loosen the adjusting bolts on the left and right sides and adjust the headless hexagon socket screws in the two limiting threaded holes 24 at the same time, then move the wheel assembly and the left rear hook inner plate 16 and the right rear hook inner plate 3 forward or backward to achieve tensioning of the drive chain / drive belt, then re-tighten the adjusting bolts on the left and right sides and re-rotate the headless hexagon socket screws so that their front ends contact the guide protrusions.
Claims
1. An inner side adjustable frame rear hook, characterized by: The invention comprises a left rear hook outer sheet (18) and a right rear hook outer sheet (1) which are arranged opposite to each other in an L-shaped manner, wherein a left rear hook inner sheet (16) is arranged on the inner side of the left rear hook outer sheet (18), a right rear hook inner sheet (3) is arranged on the inner side of the right rear hook outer sheet (1), a left hook (15) is arranged at the rear of the left rear hook inner sheet (16), and a right hook (7) is arranged at the rear of the right rear hook inner sheet (3); a plurality of left connecting strips which are transversely connected are arranged at the lower part of the left rear hook outer sheet (18); A plurality of left-piece strip holes (22) are provided at corresponding positions on the left rear hook inner plate (16), and a left-side adjusting bolt is provided between the left-side connecting hole (13) and the left-piece strip hole (22); a plurality of right-piece connecting holes (19) are provided in a transverse direction at the lower part of the right rear hook outer plate (1); a plurality of right-piece strip holes (5) are provided at corresponding positions on the right rear hook inner plate (3), and a right-side adjusting bolt is provided between the right-side connecting hole (19) and the right-piece strip hole (5).
2. The inner side adjustable frame rear hook according to claim 1, characterized in that: A left guide protrusion (20) is provided on the inner side of the lower middle portion of the left rear hook outer piece (18), a left guide hole (21) is provided in the middle portion of the left rear hook inner piece (16), and the left guide protrusion (20) is located in the left guide hole (21); a right guide protrusion (2) is provided on the inner side of the lower middle portion of the right rear hook outer piece (1), a right guide hole (6) is provided in the middle portion of the right rear hook inner piece (3), and the right guide protrusion (2) is located in the right guide hole (6).
3. The inner side adjustable frame rear hook as claimed in claim 2, characterized in that: A limiting threaded hole (24) is provided at the rear of the left rear hook inner plate (16) and extends forward to the left guide hole (21), a headless socket hexagonal screw is provided in the limiting threaded hole (24), and the front end of the headless socket hexagonal screw abuts against the rear of the left guide protrusion (20); a limiting threaded hole (24) is provided at the rear of the right rear hook inner plate (3) and extends forward to the right guide hole (6), a headless socket hexagonal screw is provided in the limiting threaded hole (24), and the front end of the headless socket hexagonal screw abuts against the rear of the right guide protrusion (2).
4. The inner side adjustable frame rear hook as claimed in claim 3, characterized in that: A boss (17) for installing a brake is provided at the top front and top rear of the left rear hook inner plate (16), and a threaded hole is provided at the center of the boss (17).
5. The inner side adjustable frame rear hook according to claim 4, characterized in that: A groove (12) for installing a vehicle ladder is provided at the middle of the lower outer side of the left rear hook outer plate (18), and installation holes (14) are provided at the front and rear of the groove (12).
6. The inner side adjustable frame rear hook according to claim 5, characterized in that: A connecting arm (10) is installed at the top of the upper portion of the right rear hook outer piece (1) via an adapter block (9); the lower portion of the adapter block (9) is detachably connected to the top of the upper portion of the right rear hook outer piece (1); and the upper portion of the adapter block (9) is detachably connected to the connecting arm (10).
7. The inner side adjustable frame rear hook according to claim 6, characterized in that: A left connecting portion (11) is provided at the lower front end and the upper end of the left rear hook outer piece (18), and a right connecting portion (4) is provided at the lower front end of the right rear hook outer piece (1) and the upper end of the connecting arm (10).