Turnover device for car roof bicycle fixing frame

Abstract

The utility model relates to the field of car roof bicycle fixing frames, and provides a turnover device for a car roof bicycle fixing frame, which comprises a turnover part and a fixing part, the car roof fixing frame comprises a first fixing beam and a second fixing beam which are symmetrically arranged, and the first fixing beam and the second fixing beam are arranged on a car roof. The overturning part is simultaneously mounted at one ends of the first fixed beam and the second fixed beam, and the fixed part is simultaneously mounted at the other ends of the first fixed beam and the second fixed beam; a bicycle can be placed on the bicycle fixing frame on the top of the bicycle, so that the bicycle can be turned over and horizontally placed for transportation, and the height is guaranteed; the connection relation between the overturning part structures is simple, the operation is convenient, and the installation process is effectively simplified; the first overturning rod and the second overturning rod are arranged to be guide rail rods, and strip-shaped grooves are formed in the guide rail rods, so that different types of bicycle fixing frames can be fixed, and the application range is expanded; the fixing part is of a foldable mechanical structure, can be put down when not in use, and is more attractive and practical.

Description

Technical Field

[0001] This utility model relates to the field of roof-mounted bicycle racks, and in particular to a flipping device for roof-mounted bicycle racks. Background Technology

[0002] With the fast pace of urban life, more and more cycling enthusiasts are choosing to cycle in the suburbs during holidays. However, cycling directly to the suburbs would waste a lot of time and energy, and traffic conditions often don't allow it. Therefore, more and more people are choosing to transport their bicycles to the suburbs before cycling. However, since the trunk space of most family cars is small, it cannot meet the needs of carrying bicycles. As a result, bicycle mounts have appeared on the market. Existing bicycle mounts are roughly divided into rear mounts and roof mounts. Roof mounts generally mount the bicycle upright on the roof and secure the tires, or further, lay the bicycle down. However, since the weight of the bicycle frame is greater than the tires, and the bicycle is less stable when the tires are down, it cannot stand up on its own, making loading time-consuming and laborious. In addition, the existing roof mounts have fixed spacing, which cannot accommodate different bicycle models. At the same time, existing roof mounts that can transport bicycles flat have complex structures and are cumbersome to install. Utility Model Content

[0003] This utility model proposes a flipping device for a roof-mounted bicycle rack. The bicycle can be placed on the rack and flipped flat for transport, ensuring proper height adjustment. The flipping section is composed of a first crossbeam, a first base, a second base, a first flipping rod, a second flipping rod, and a first mounting rod. The structural connections are simple, operation is convenient, and the installation process is effectively simplified. Furthermore, the first and second flipping rods are designed as guide rails with grooves, allowing for the fixing of different types of bicycle racks, expanding the range of applications. The fixing section is also designed as a foldable mechanical structure, allowing it to be folded down when not in use, maintaining the height of the roof and making it more aesthetically pleasing and practical.

[0004] The technical solution of this utility model is implemented as follows:

[0005] A flipping device for a roof-mounted bicycle rack is installed on the roof-mounted rack;

[0006] Includes: a flipping part and a fixing part. The roof fixing frame includes a first fixing beam and a second fixing beam arranged symmetrically. The first fixing beam and the second fixing beam are installed on the roof. The flipping part is installed at one end of the first fixing beam and the second fixing beam, and the fixing part is installed at the other end of the first fixing beam and the second fixing beam.

[0007] A bicycle mounting bracket is installed on the flipping section;

[0008] The bicycle is snapped onto the fixing part after the flipping part flips over.

[0009] Furthermore, the flipping part includes a first crossbeam, a first base, a second base, a first flipping rod, a second flipping rod, and a first mounting rod;

[0010] The two ends of the first crossbeam are respectively installed at one end of the first fixed beam and the second fixed beam;

[0011] Both the first base and the second base are mounted on the first crossbeam;

[0012] The first flipping rod is mounted on the first base;

[0013] The second flipping rod is mounted on the second base;

[0014] The two ends of the first mounting rod are respectively mounted on the first flip rod and the second flip rod;

[0015] A bicycle mounting bracket is installed on the first mounting rod.

[0016] Furthermore, the first flip rod and the second flip rod are respectively mounted on the first base and the second base via a set of flipping components;

[0017] The flipping assembly includes a first flipping hole, a second flipping hole, a third flipping hole, and a flipping pin;

[0018] The first base and the second base have the same structure and both include a first mounting ear and a second mounting ear;

[0019] The first or second flip rod is installed between the first mounting ear and the second mounting ear;

[0020] The first flip hole is disposed on the first mounting ear; the second flip hole is disposed on the first flip rod or the second flip rod; the third flip hole is disposed on the second mounting ear;

[0021] The flip pin is simultaneously installed in the first flip hole, the second flip hole, and the third flip hole.

[0022] Furthermore, the flipping component is also provided with a limiting component;

[0023] The limiting component includes a first limiting hole, a second limiting hole, and a limiting pin;

[0024] The first limiting hole is disposed on the first mounting ear, and the second limiting hole is disposed on the second mounting ear. The limiting pin is simultaneously installed on or disengaged from the first limiting hole and the second limiting hole.

[0025] Furthermore, both the first flipping rod and the second flipping rod are guide rail rods.

[0026] Furthermore, both the first and second flipping rods are provided with strip-shaped binding grooves.

[0027] Furthermore, the fixing part includes a second crossbeam, a third base, a fourth base, a first support rod, a second support rod, and a second mounting rod;

[0028] The two ends of the second crossbeam are respectively installed at the other ends of the first fixed beam and the second fixed beam;

[0029] Both the third base and the fourth base are mounted on the second crossbeam;

[0030] The bottom end of the first support rod is mounted on the third base;

[0031] The bottom end of the second support rod is mounted on the fourth base;

[0032] The two ends of the second mounting rod are respectively mounted on the top ends of the first support rod and the second support rod.

[0033] Furthermore, both the first support rod and the second support rod are respectively mounted on the third base and the fourth base via rotating components;

[0034] The rotating assembly includes a first rotating hole, a second rotating hole, a third rotating hole, and a rotating pin;

[0035] Both the third base and the fourth base are provided with a third connecting ear and a fourth connecting ear. The first rotating hole is provided on the third connecting ear, the third rotating hole is provided on the fourth connecting ear, and the second rotating hole is provided at the bottom end of the first support rod or the second support rod. The bottom end of the first support rod or the second support rod is installed between the third connecting ear and the fourth connecting ear. The first rotating hole, the second rotating hole and the third rotating hole are coaxially arranged, and the rotating pin is installed in the first rotating hole, the second rotating hole and the third rotating hole simultaneously.

[0036] Furthermore, the rotating component is also provided with a folding component;

[0037] The folding assembly includes a first quick-release hole, a second quick-release hole, a third quick-release hole, and a quick-release pin;

[0038] The first quick-release hole is provided on the third connecting lug, the second quick-release hole is provided at the bottom end of the first support rod or the second support rod, and the third quick-release hole is provided on the fourth connecting lug;

[0039] The quick-release pin is installed simultaneously in the first quick-release hole, the second quick-release hole, and the third quick-release hole when they are coaxial.

[0040] The quick-release pin is installed in both the first quick-release hole and the third quick-release hole when the first support rod and the second support rod are in a horizontal position.

[0041] Furthermore, the second mounting rod is fitted with a wear-resistant foam tube.

[0042] This invention allows bicycles to be placed on a roof-mounted bicycle rack, enabling them to be transported flat with a tilted design, ensuring proper height adjustment. The tilting mechanism is composed of a first crossbeam, a first base, a second base, a first tilting rod, a second tilting rod, and a first mounting rod. The structural connections are simple, operation is convenient, and the installation process is effectively simplified. Furthermore, the first and second tilting rods are designed as guide rails with grooves, allowing for the fixing of different types of bicycle racks, thus expanding the range of applications. The fixing mechanism is also designed as a foldable mechanical structure, allowing the bicycle to be laid down when not in use, maintaining the height of the roof and making it both aesthetically pleasing and practical. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a three-dimensional structural diagram of a flipping device for a roof-mounted bicycle bracket in a specific embodiment of the present utility model;

[0045] Figure 2 for Figure 1 An exploded view of a portion of the flipping section of a flipping device for a roof-mounted bicycle rack is shown.

[0046] Figure 3 for Figure 1 An exploded view of a portion of the fixing part of a flipping device for a roof-mounted bicycle rack is shown.

[0047] Figure 4 for Figure 1 A schematic diagram of the structure of the first mounting rod in the flipping part of a flipping device for a roof-mounted bicycle rack is shown.

[0048] Explanation of reference numerals in the attached drawings: Flip-over part 1; First crossbeam 11; First base 12; Second base 13; First flip-over rod 14; Second flip-over rod 15; First mounting rod 16; Flip-over assembly 17; First flip-over hole 171; Second flip-over hole 172; Third flip-over hole 173; Flip-over pin 174; Limiting assembly 18; First limiting hole 181; Second limiting hole 182; Limiting pin 183; First mounting ear 101; Second mounting ear 102; Fixing part 2; Second crossbeam 21; Third base 2 2; Fourth base 23; First support rod 24; Second support rod 25; Second mounting rod 26; Wear-resistant foam tube 261; Rotating assembly 27; First rotating hole 271; Second rotating hole 272; Third rotating hole 273; Rotating pin 274; Folding assembly 28; First quick-release hole 281; Second quick-release hole 282; Third quick-release hole 283; Quick-release pin 274; Third connecting ear 201; Fourth connecting ear 202; Roof mounting bracket 3; First fixing beam 31; Second fixing beam 32. Detailed Implementation

[0049] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0050] In a specific embodiment of this utility model, see Figures 1-4 A flipping device for a roof-mounted bicycle rack is installed on a roof-mounted rack 3;

[0051] It includes: a flipping part 1 and a fixing part 2, wherein the flipping part 1 is used to install a bicycle mounting bracket for fixing a bicycle, and drives the entire bicycle mounting bracket and the installed bicycle to flip 90°.

[0052] When the flipping part 1 flips the bicycle frame and the bicycle as a whole, the bicycle is secured to the fixing part 2. Bicycle frames on the market cannot flip on their own and require a separate flipper to do so. However, the flipper connection is unstable, posing a safety hazard during riding. Moreover, the flipper has a single specification and is not suitable for installing on various bicycle models. The flipping part in this application is directly installed on the fixing frame on the roof of the bicycle. The connection is stable and it can flip the entire bicycle frame, eliminating the riding hazard.

[0053] The roof mounting bracket 3 includes a first fixing beam 31 and a second fixing beam 32 symmetrically arranged. The first fixing beam 31 and the second fixing beam 32 are used to support the flipping part 1 and the fixing part 2. The first fixing beam 31 and the second fixing beam 32 are installed on the roof. The first fixing beam 31 and the second fixing beam 32 are symmetrically arranged. The flipping part 1 is installed at one end of both the first fixing beam 31 and the second fixing beam 32 (see attached). Figure 1 (As shown in the perspective view at the front end), the fixing part 2 is simultaneously installed at the other end of both the first fixing beam 31 and the second fixing beam 32 (attached). Figure 1 (The rear end of the 3D diagram shown).

[0054] In a specific embodiment of this utility model, see Figures 1-4 See details Figure 1 , Figure 2 The flipping part 1 includes a first crossbeam 11, a first base 12, a second base 13, a first flipping rod 14, a second flipping rod 15, and a first mounting rod 16;

[0055] Furthermore, the two ends of the first crossbeam 11 are respectively installed at one end of the first fixed beam 31 and the second fixed beam 32, and the first crossbeam 11 provides support for the first base 12 and the second base 13;

[0056] Both the first base 12 and the second base 13 are mounted on the first crossbeam 11;

[0057] The first flipping rod 14 is mounted on the first base 12, and the first base 12 provides support for the first flipping rod 14. The first flipping rod 14 can be flipped with the first base 12 as a reference.

[0058] The second flipping rod 15 is mounted on the second base 13, and the second base 13 provides support for the second flipping rod 15. The second flipping rod 15 can be flipped with the second base 13 as a reference.

[0059] The two ends of the first mounting rod 16 are respectively mounted on the first flipping rod 14 and the second flipping rod 15. The first flipping rod 14 and the second flipping rod 15 provide symmetrical support and linkage for the first mounting rod 16. When flipping, the first mounting rod 16 drives the first flipping rod 14 and the second flipping rod 15 to rotate. The first flipping rod 14 and the second flipping rod 15 provide a flipping reference, and the flipping is performed with the connection point with the first base 12 and the second base 13 as the flipping axis.

[0060] A bicycle mounting bracket is installed on the first mounting rod 16. When installing the bicycle, the bicycle is first placed upright on the bicycle mounting bracket and fixed. After fixing, the bicycle is pushed, which in turn causes the first mounting rod 16, the first flipping rod 14, and the second flipping rod 15 to flip as a whole, so that the bicycle is placed flat on the roof and simultaneously snapped onto the fixing part 2.

[0061] In a specific embodiment of this utility model, see Figures 1-4 See details Figure 1 , Figure 2 The first flipping rod 14 and the second flipping rod 15 are respectively mounted on the first base 12 and the second base 13 through a set of flipping components 17;

[0062] The flipping assembly 17 includes a first flipping hole 171, a second flipping hole 172, a third flipping hole 173, and a flipping pin 174;

[0063] The first base 12 and the second base 13 have the same structure and both include a first mounting ear 101 and a second mounting ear 102;

[0064] The first flip rod 14 is installed between the first mounting ear and the second mounting ear of the first base, and the second flip rod 15 is installed between the first mounting ear and the second mounting ear of the second base;

[0065] The first flip hole 171 is disposed on the first mounting ear 101, the second flip hole 172 is disposed on the first flip rod 14 or the second flip rod 15; the third flip hole 173 is disposed on the second mounting ear 102;

[0066] The flip pin 174 is simultaneously installed in the first flip hole 171, the second flip hole 172 and the third flip hole 173;

[0067] That is, both the first flipping rod 14 and the second flipping rod 15 are connected to two mounting ears, ensuring the stability of connection and rotation.

[0068] In a specific embodiment of this utility model, see Figures 1-4 See details Figure 1 , Figure 2 The flipping component 17 is also provided with a limiting component 18;

[0069] The limiting component 18 includes a first limiting hole 181, a second limiting hole 182, and a limiting pin 183;

[0070] The first limiting hole 181 is disposed on the first mounting ear 101, the second limiting hole 182 is disposed on the second mounting ear 102, and the limiting pin 183 is simultaneously installed on or removed from the first limiting hole 181 and the second limiting hole 182.

[0071] When the bicycle is laid flat, the first flip rod 14 and the second flip rod 15 are in an upright state. At this time, in order to ensure the stability of the first flip rod 14 and the second flip rod 15, a limiting component 18 is set up. The rotation of the first flip rod 14 and the second flip rod 15 is limited by the limiting pin 183 to ensure the stability of the bicycle when it is laid flat during the ride.

[0072] In a specific embodiment of this utility model, see Figures 1-4 See details Figure 1 , Figure 2 Both the first flipping rod 14 and the second flipping rod 15 are guide rails. The guide rails can accommodate the installation or adjustment of the installation position of bicycle mounting frames of different specifications, thus accommodating the installation of bicycles of different specifications.

[0073] In a specific embodiment of this utility model, see Figures 1-4 See details Figure 1 , Figure 2 Both the first flipping rod 14 and the second flipping rod 15 are provided with strip-shaped binding grooves 103, which are firstly to facilitate the installation of fixing components for bicycle mounting brackets, and secondly to reduce the overall weight.

[0074] In a specific embodiment of this utility model, see Figures 1-4 See details Figure 1 , Figure 3 The fixing part 2 includes a second crossbeam 21, a third base 22, a fourth base 23, a first support rod 24, a second support rod 25, and a second mounting rod 26;

[0075] The two ends of the second crossbeam 21 are respectively installed at the other ends of the first fixed beam 31 and the second fixed beam 32, and the first fixed beam 31 and the second fixed beam 32 provide support for the second crossbeam 21;

[0076] The third base 22 and the fourth base 23 are both mounted on the second crossbeam 21, and the second crossbeam 21 provides an installation platform for the third base 22 and the fourth base 24.

[0077] The bottom end of the first support rod 24 is mounted on the third base 22, and the third base 22 provides support for the first support rod 24;

[0078] The bottom end of the second support rod 25 is mounted on the fourth base 23, and the fourth base 23 provides support for the second support rod 25;

[0079] The two ends of the second mounting rod 26 are respectively mounted on the top ends of the first support rod 24 and the second support rod 25, and the first support rod 24 and the second support rod 25 provide support for the second mounting rod 26;

[0080] When the bicycle is laid down, the frame fits snugly into the fixed part, and the frame can be secured if necessary.

[0081] In a specific embodiment of this utility model, see Figures 1-4 See details Figure 1 , Figure 3 The first support rod 24 and the second support rod 25 are respectively mounted on the third base 22 and the fourth base 23 via the rotating assembly 27;

[0082] The rotating assembly 27 includes a first rotating hole 271, a second rotating hole 272, a third rotating hole 273, and a rotating pin 274;

[0083] The third base 22 and the fourth base 23 are each provided with a third connecting ear 201 and a fourth connecting ear 202. The first rotating hole 271 is provided on the third connecting ear 201, the third rotating hole 273 is provided on the fourth connecting ear 202, and the second rotating hole 272 is provided at the bottom end of the first support rod 24 or the second support rod 25. The bottom end of the first support rod 24 or the second support rod 25 is installed between the third connecting ear 201 and the fourth connecting ear 202. The first rotating hole 271, the second rotating hole 272 and the third rotating hole 273 are coaxially arranged. The rotating pin 274 is installed in the first rotating hole 271, the second rotating hole 272 and the third rotating hole 273 at the same time.

[0084] The fixing part 2 stands upright on the roof when in use, which looks awkward when not in use. Therefore, the fixing part 2 is set as a foldable component. After setting the rotating component 27, when the bicycle is removed, the second mounting rod 26 is rotated. The second mounting rod 26 drives the first support rod 24 and the second support rod 25 to rotate around their respective rotating pins as the rotation axis until the first support rod 24 and the second support rod 25 are parallel to the roof.

[0085] In a specific embodiment of this utility model, see Figures 1-4 See details Figure 1 , Figure 3 The rotating component 27 is also provided with a folding component 28;

[0086] The folding assembly 28 includes a first quick-release hole 281, a second quick-release hole 282, a third quick-release hole 283, and a quick-release pin 274;

[0087] The first quick-release hole 281 is provided on the third connecting ear 201, the second quick-release hole 282 is provided at the bottom end of the first support rod 24 or the second support rod 25, and the third quick-release hole 283 is provided on the fourth connecting ear 202;

[0088] The quick-release pin 284 is simultaneously installed in the first quick-release hole 281, the second quick-release hole 282, and the third quick-release hole 283 when they are coaxial.

[0089] The quick-release pin 284 is simultaneously installed in the first quick-release hole 281 and the third quick-release hole 283 when the first support rod 24 and the second support rod 25 are in the horizontal position.

[0090] Since the fixing part 2 is designed as a rotatable component, a folding component 28 is also provided to ensure the stability of the fixing part during use. When the bicycle needs to be installed, the quick-release pin 284 is first removed, and then the second mounting rod 26 is pulled. The second mounting rod 26 causes the first support rod 24 and the second support rod 25 to flip upward until the first support rod 24 and the second support rod 25 stand upright on the roof of the bicycle. At this time, the first quick-release hole 281, the second quick-release hole 282 and the third quick-release hole 283 are coaxial. The quick-release pin 284 is inserted into the first quick-release hole 284, the second quick-release hole 282 and the third quick-release hole 283 to position the first support rod 24 and the second support rod 25, ensuring their stability during use and the stability of the bicycle.

[0091] In a specific embodiment of this utility model, see Figure 1 , Figure 4 Since the bicycle frame is clipped onto the second mounting rod 26 of the fixed part after the bicycle is laid down, a wear-resistant foam tube 261 is fitted onto the second mounting rod 26 to protect the bicycle from wear caused by bumps during the ride.

[0092] At the same time, wear-resistant layers can be applied to any areas where wear and tear on the bicycle can be anticipated.

[0093] In a specific embodiment of this utility model, see Figures 1-4 :

[0094] When idle:

[0095] The first and second tilting rods are lying flat on the roof of the vehicle, and the first and second support rods are also lying flat on the roof of the vehicle.

[0096] When it is necessary to carry a bicycle:

[0097] First, remove the quick-release pin, pull the second mounting rod to lift the first and second support rods to a vertical position on the roof, then reinstall the quick-release pin and check the stability of the first and second support rods.

[0098] Then place the bicycle as a whole on the bicycle mounting bracket on the first mounting rod and secure the bicycle.

[0099] Then push the first mounting rod and the bicycle. Since the connection between the first flip rod and the first base and the connection between the second flip rod and the second base are both rotatable connections, the bicycle, the first mounting rod, the first flip rod and the second flip rod will flip forward and downward at the same time until the bicycle is placed flat on the roof (that is, the first flip rod and the second flip rod are upright on the roof).

[0100] Since both the first and second flip rods are rotatable rods, when the first and second flip rods are upright, the limiting pins are inserted into the first and second limiting holes to ensure that the first and second flip rods will not reverse.

[0101] At the same time, after the bicycle is laid flat, the bicycle frame is precisely attached to the bicycle tire fixing component on the second mounting rod. If necessary, the bicycle frame can be fixed in place.

[0102] When disassembling a bicycle:

[0103] First, release the bicycle tires from the locks, then remove the limit pins and lift the bicycle so that it stands upright on the roof. Then, release the bicycle rack and remove the bicycle.

[0104] After removing the bicycle:

[0105] Insert the limiting pin into the first limiting hole and the second limiting hole. At this time, since the first flipping rod and the second flipping rod are in a horizontal state, the strip groove on them is exactly aligned with the first limiting hole and the second limiting hole. The limiting pin is inserted into the strip groove at the same time. At this time, the limiting pin limits and fixes the position of the first flipping rod and the second flipping rod to ensure stability during driving.

[0106] Then remove the quick-release pin, pull the second mounting rod to flip the first support rod and the second support rod to lie flat on the roof. At this time, the first quick-release hole and the third quick-release hole are coaxial. Insert the quick-release pin into the first quick-release hole and the third quick-release hole.

[0107] Waiting for the next installation.

[0108] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flipping device for a roof-mounted bicycle rack, mounted on a roof-mounted rack, characterized in that: The vehicle roof mounting bracket includes a flipping part and a fixing part. The roof mounting bracket includes a first fixing beam and a second fixing beam arranged symmetrically. The first fixing beam and the second fixing beam are installed on the roof. The flipping part is installed at one end of the first fixing beam and the second fixing beam, and the fixing part is installed at the other end of the first fixing beam and the second fixing beam. A bicycle mounting bracket is installed on the flipping part, and a bicycle is mounted on the bicycle mounting bracket; The bicycle is snapped onto the fixing part after the flipping part flips over.

2. The flipping device for a roof-mounted bicycle rack as described in claim 1, characterized in that: The flipping part includes a first crossbeam, a first base, a second base, a first flipping rod, a second flipping rod, and a first mounting rod; The two ends of the first crossbeam are respectively installed at one end of the first fixed beam and the second fixed beam; Both the first base and the second base are mounted on the first crossbeam; The first flipping rod is mounted on the first base; The second flipping rod is mounted on the second base; The two ends of the first mounting rod are respectively mounted on the first flip rod and the second flip rod; A bicycle mounting bracket is installed on the first mounting rod.

3. The flipping device for a roof-mounted bicycle rack as described in claim 2, characterized in that: The first flipping rod and the second flipping rod are respectively mounted on the first base and the second base via a set of flipping components; The flipping assembly includes a first flipping hole, a second flipping hole, a third flipping hole, and a flipping pin; The first base and the second base have the same structure and both include a first mounting ear and a second mounting ear; The first or second flip rod is installed between the first mounting ear and the second mounting ear; The first flip hole is disposed on the first mounting ear; the second flip hole is disposed on the first flip rod or the second flip rod; the third flip hole is disposed on the second mounting ear; The flip pin is simultaneously installed in the first flip hole, the second flip hole, and the third flip hole.

4. The flipping device for a roof-mounted bicycle rack as described in claim 3, characterized in that: The flipping component is also provided with a limiting component; The limiting component includes a first limiting hole, a second limiting hole, and a limiting pin; The first limiting hole is disposed on the first mounting ear, and the second limiting hole is disposed on the second mounting ear. The limiting pin is simultaneously installed on or disengaged from the first limiting hole and the second limiting hole.

5. A flipping device for a roof-mounted bicycle rack as described in claim 2 or 3, characterized in that: Both the first flipping rod and the second flipping rod are guide rail rods.

6. The flipping device for a roof-mounted bicycle rack as described in claim 2, characterized in that: Both the first and second flipping rods are provided with strip-shaped binding grooves.

7. The flipping device for a roof-mounted bicycle rack as described in claim 1, characterized in that: The fixing part includes a second crossbeam, a third base, a fourth base, a first support rod, a second support rod, and a second mounting rod; The two ends of the second crossbeam are respectively installed at the other ends of the first fixed beam and the second fixed beam; Both the third base and the fourth base are mounted on the second crossbeam; The bottom end of the first support rod is mounted on the third base; The bottom end of the second support rod is mounted on the fourth base; The two ends of the second mounting rod are respectively mounted on the top ends of the first support rod and the second support rod.

8. The flipping device for a roof-mounted bicycle rack as described in claim 7, characterized in that: The first support rod and the second support rod are respectively mounted on the third base and the fourth base via rotating components; The rotating assembly includes a first rotating hole, a second rotating hole, a third rotating hole, and a rotating pin; Both the third base and the fourth base are provided with a third connecting ear and a fourth connecting ear. The first rotating hole is provided on the third connecting ear, the third rotating hole is provided on the fourth connecting ear, and the second rotating hole is provided at the bottom end of the first support rod or the second support rod. The bottom end of the first support rod or the second support rod is installed between the third connecting ear and the fourth connecting ear. The first rotating hole, the second rotating hole and the third rotating hole are coaxially arranged, and the rotating pin is installed in the first rotating hole, the second rotating hole and the third rotating hole simultaneously.

9. A flipping device for a roof-mounted bicycle rack as described in claim 8, characterized in that: The rotating component is also provided with a folding component; The folding assembly includes a first quick-release hole, a second quick-release hole, a third quick-release hole, and a quick-release pin; The first quick-release hole is provided on the third connecting lug, the second quick-release hole is provided at the bottom end of the first support rod or the second support rod, and the third quick-release hole is provided on the fourth connecting lug; The quick-release pin is installed simultaneously in the first quick-release hole, the second quick-release hole, and the third quick-release hole when they are coaxial. The quick-release pin is installed in both the first quick-release hole and the third quick-release hole when the first support rod and the second support rod are in a horizontal position.

10. A flipping device for a roof-mounted bicycle rack as described in claim 7, characterized in that: The second mounting rod is fitted with a wear-resistant foam tube.

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