Front wheel fixing mechanism and vehicle-mounted bicycle frame

Abstract

The front wheel fixing mechanism comprises a front wheel fixing frame, a front wheel fixing device and a front wheel fixing seat, the front wheel fixing device is installed on the front wheel fixing frame in an adjustable and position-lockable mode, the front wheel fixing seat is provided with a front wheel hinge portion matched with a rotating frame of the front wheel fixing frame in a rotating mode, and the front wheel hinge portion is connected with the front wheel fixing frame in a rotating mode. A fixing frame limiting check block is arranged on the side, close to the middle of the base frame, below the front wheel hinge portion, a fixing frame limiting plate is arranged at the hinged position of the front wheel fixing frame and the front wheel fixing frame in an extending mode, and the fixing frame limiting check block is used for being matched with the fixing frame limiting plate to limit the rotating angle of the front wheel fixing frame relative to the front wheel fixing base. The position where the fixing frame limiting check block is arranged does not affect the front wheel fixing frame to turn towards the middle of the base frame so as to be folded and put away, the fixing frame limiting check block can be matched with the fixing frame limiting plate to provide extremely firm limiting performance, the structure is simple, operation is extremely convenient, and the front wheel fixing frame can be directly unfolded to be used.

Description

Technical Field

[0001] The utility model relates to the field of vehicle-mounted bicycle racks, in particular to a front wheel fixing mechanism and a vehicle-mounted bicycle rack. Background Art

[0002] Bicycles are widely used for exercise and fitness, and many cycling enthusiasts often install bicycle racks in their cars. These cars already have fixed pole-shaped racks, such as roof / rear storage racks or luggage racks mounted on the racks. The bicycle racks are removable and attachable to the pole-shaped racks. The front wheel mounting mechanism of a bicycle rack is crucial for securing the bicycle. To facilitate storage and reduce wind resistance when not in use, the front wheel mounting mechanism often utilizes a rotatable connection to the base frame. However, current structures for limiting the rotation angle of the front wheel mounting mechanism are overly complex or lack sufficient robustness.

[0003] In view of this, this application is filed. Utility Model Content

[0004] The utility model provides a front wheel fixing mechanism and a vehicle-mounted bicycle rack to solve at least one of the above technical problems.

[0005] A front wheel fixing mechanism is mounted on a base frame of a vehicle-mounted bicycle rack and comprises:

[0006] A front wheel fixing frame is used to limit the front wheel of the bicycle in the left and right directions.

[0007] A front wheel holder is mounted on the front wheel fixing frame in an adjustable and position-lockable manner to fasten the rim of the front wheel of the bicycle.

[0008] A front wheel fixing seat is provided on the front wheel fixing seat with a front wheel hinge portion that rotates with the front wheel fixing frame, and a fixing frame limit block is provided on the side of the middle of the base frame below the front wheel hinge portion, and the front wheel fixing frame is provided with a fixing frame limit plate extending from the hinge point with the front wheel fixing frame, and the fixing frame limit block is used to cooperate with the fixing frame limit plate to limit the rotation angle of the front wheel fixing frame relative to the front wheel fixing seat.

[0009] Furthermore, the front wheel fixing seat includes a rotating bolt and a rotating nut, and the front wheel hinge part of the front wheel fixing seat is provided with a rotating through hole. The rotating bolt passes through the front wheel fixing frame and the rotating through hole and is fixed to the rotating nut. The rotating nut is a anti-loosening nut or a self-locking nut.

[0010] Furthermore, the bolt rod of the rotating bolt includes a smooth portion and a threaded portion, the area where the smooth portion is located is adapted to the front wheel fixing frame and the rotating through hole, and the threaded portion is adapted to the rotating nut.

[0011] Furthermore, the fixing frame limit block is located and cooperates with the fixing frame limit plate to limit the front wheel fixing frame at a position of 110° to 150° relative to the base frame. The fixing frame limit block is integrally formed or welded to the front wheel fixing seat, and the fixing frame limit plate is integrally formed or welded to the front wheel fixing frame.

[0012] Furthermore, the front wheel fixing seat also includes a front wheel sliding mounting block that can be slidably fitted in the sliding groove of the base frame, and an adjusting bolt for fixing and adjusting the distance between the front wheel sliding mounting block and the front wheel fixing seat body.

[0013] Furthermore, it also includes a front wheel fixing shell, which is installed on the outside of the front wheel fixing seat, and the middle part of the front wheel fixing shell is concave and is provided with a shell mounting through hole; the front wheel fixing shell also includes a shell fixing bolt, and the front wheel fixing seat is located at the bottom of the base frame and is provided with a threaded hole corresponding to the shell fixing bolt, and the shell fixing bolt is used to pass through the shell mounting through hole and the through hole of the base frame and be threadedly connected to the threaded hole of the front wheel fixing seat.

[0014] Furthermore, the housing mounting through hole is stepped, and the housing fixing bolt is a countersunk bolt.

[0015] Furthermore, it also includes a front wheel strap, the front wheel fixing frame is a U-shaped tubular structure, one end of the front wheel strap is arranged on the tubular structure on one side of the front wheel fixing frame, and the front and back sides of the front wheel strap are provided with Velcro, so that the front wheel fixing frame can be tied and fixed to the base frame when in use, and rolled up in a circle on the front wheel fixing frame when stored.

[0016] The present application also provides a vehicle-mounted bicycle rack, comprising a rear wheel fixing mechanism, a base frame, and the front wheel fixing mechanism as described above; the front wheel fixing mechanism and the rear wheel fixing mechanism are mounted on the base frame.

[0017] Furthermore, the bottom of the base frame is provided with a bottom slide groove along its length direction, and the bottom slide groove is T-shaped; the front wheel fixing seat also includes a front wheel sliding mounting block that can be slidably fitted in the bottom slide groove, and an adjusting bolt for fixing the front wheel sliding mounting block and the front wheel fixing seat body, thereby fixing the front wheel fixing seat to the base frame.

[0018] The front wheel fixing mechanism of the present invention is provided with a fixing frame limiting block below the front wheel hinge portion of the front wheel fixing seat and the front wheel fixing frame, close to the middle side of the base frame, and a fixing frame limiting plate is extended from the front wheel hinge portion of the front wheel fixing frame. The position where the fixing frame limiting block is provided will not affect the front wheel fixing frame from flipping toward the middle of the base frame for folding and stowing, and can cooperate with the fixing frame limiting plate to provide extremely firm limiting performance. It has a simple structure and is extremely easy to operate, and can be used directly after it is opened.

[0019] Furthermore, the fixing frame limit block and the fixing frame limit plate are integrally formed or welded, which is convenient to produce and has good firmness. In addition, the front wheel fixing seat and the front wheel fixing frame are hinged by rotating bolts and anti-loosening nuts, which is convenient to hinge, saves effort to rotate, and is not easy to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a vehicle-mounted bicycle rack in a folded state according to an embodiment of the utility model;

[0021] Figure 2 yes Figure 1 Schematic diagram of the open state structure;

[0022] Figure 3 yes Figure 1 Schematic diagram of the overall structure of the front wheel fixing mechanism;

[0023] Figure 4 yes Figure 3 Schematic diagram of the structure behind the hidden front wheel fixing shell;

[0024] Figure 5 yes Figure 3 A schematic diagram of the overall structure of the front wheel fixing seat;

[0025] Figure 6 yes Figure 3 A schematic structural diagram of the front wheel fixing seat being installed on the base frame;

[0026] Figure 7 yes Figure 1 A first-person perspective structural diagram of an anti-theft lock;

[0027] Figure 8 yes Figure 7 Schematic diagram of the lock seat structure;

[0028] Figure 9 yes Figure 8 Schematic diagram of the open state structure;

[0029] Figure 10 yes Figure 9 A schematic diagram of the second perspective structure;

[0030] Figure 11 yes Figure 1 A schematic diagram of the overall structure of a detachable mounting and fixing mechanism;

[0031] Figure 12 yes Figure 11 A schematic diagram of the second perspective structure;

[0032] Figure 13 yes Figure 11 A schematic diagram of the structure after hiding part of the first mounting base structure from a second viewing angle;

[0033] Figure 14 yes Figure 1 A schematic diagram of the overall structure of the rear wheel fixing mechanism;

[0034] Figure 15 yes Figure 14 Schematic diagram of the structure after some parts are hidden;

[0035] Figure 16 yes Figure 1 A schematic structural diagram of a first opening angle;

[0036] Figure 17 yes Figure 1 A schematic diagram of a second opening angle structure;

[0037] Figure 18 yes Figure 1 Schematic diagram of the third opening angle structure.

[0038] Reference numerals:

[0039] 1. Base frame; 11. Top slide; 12. Bottom slide; 13. Position mark; 2. Front wheel fixing mechanism; 21. Front wheel fixing frame; 211. Fixing frame limit plate; 22. Front wheel holder; 23. Front wheel fixing seat; 231. Fixing frame limit block; 232. Turning bolt; 233. Turning nut; 234. Sliding mounting block; 235. Adjusting bolt; 24. Front wheel fixing housing; 241. Fixing bolt; 25. Front wheel strap; 3. Rear wheel fixing mechanism; 31. Rear wheel fixing frame; 32. Rear wheel fixing seat; 33. Adjusting assembly; 331. Adjusting rack; 332. Adjusting sleeve; 3321. Adjusting abutment block; 333. Adjusting block; 334. Adjusting table; 34. Rear wheel sliding assembly; 35. Position control assembly; 351. Hand-tightening knob; 352. Rear wheel 3. Fixing plate; 353. Sliding fixing plate; 354. Adjusting fixing column; 36. Rear wheel holder; 4. Removable mounting fixing mechanism; 41. First mounting seat; 42. Second mounting seat; 422. Mounting seat body; 423. Strip plate; 424. Wide plate; 43. Lower base plate; 431. Base plate hinge portion; 432. Base plate fixing portion; 433. Base plate mounting portion; 434. Base plate bending portion; 441. Fastening bolt; 442. Fastening nut; 5. Anti-theft lock; 51. Lock seat; 511. Lock base; 5111. Lock slot; 512. Lock upper seat; 5121. Anti-theft shell; 513. Lock core; 5131. Keyhole; 5132. Lock tongue; 514. First mounting bolt; 515. Sliding mounting plate; 516. Second mounting bolt; 52. Flexible locking strip; 521. Ring. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be understood that terms such as "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0042] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0043] Please refer to Figures 1 to 18 A vehicle-mounted bicycle rack is used to be installed on a car frame, including a base frame 1, a front wheel fixing mechanism 2 and a rear wheel fixing mechanism 3. The base frame 1 is long and has a top slide groove 11 and a bottom slide groove 12 arranged along its length direction.

[0044] The front wheel fixing mechanism 2 includes a front wheel fixing seat 22 fixedly mounted on the base frame 1, and a front wheel fixing frame 21 that can rotate relative to the front wheel fixing seat 22 and the rotation angle range can be limited; the rear wheel fixing mechanism 3 includes a rear wheel fixing seat 32 that is slidably fitted in the top slide groove 11 to adapt to different bicycle wheel wheelbases, and a rear wheel fixing frame 31 that can rotate relative to the rear wheel fixing seat 32 and the rotation angle range can be limited. The rear wheel fixing seat 32 includes a position control component 35 for releasing and strengthening the fixed relationship with the base frame 1, and the position control component 35 is controlled by a hand-tightening knob 351.

[0045] In the present application, the front wheel fixing mechanism 2 is fixedly mounted on the base frame 1, the rear wheel fixing mechanism 3 is slidably fitted on the base frame 1, and the position of the rear wheel fixing mechanism 3 can be directly controlled by a hand-twisted knob 351, so that the vehicle-mounted bicycle rack can be suitable for different models of bicycles, whether they are adult bicycles or children's bicycles. It is only necessary to adjust the distance between the rear wheel fixing mechanism 3 and the front wheel fixing mechanism 2 according to the different vehicle body lengths. The adjustment is convenient, and the structure is simple and stable.

[0046] It should be noted that the front wheel fixing mechanism 2 referred to in this application is fixedly mounted on the base frame 1, and the front wheel fixing mechanism 2 cannot have the function of sliding relative to the base frame 1. It only means that the front wheel fixing mechanism 2 must have a state of being fixed to the base frame 1, so that the rear wheel fixing mechanism 3 moves forward and backward relative to the front wheel fixing mechanism 2 on the base frame 1 according to the position of the front wheel fixing mechanism 2, thereby adapting to the different distances between the central rotating axes of the front and rear wheels of different models of bicycles.

[0047] Correspondingly, position markings 13 are provided along the length of the sidewalls of the base frame 1 to accommodate various bicycle models. In this embodiment, the position markings 13 correspond to the distances between the front and rear wheel axles of different bicycle models, using Arabic numerals to indicate distances in inches. In other embodiments, the position markings 13 may also be in Chinese, English, or other symbols that can identify the bicycle model. Once the user knows the bicycle model to be secured by the vehicle-mounted bicycle rack, they can slide the rear wheel securing mechanism 3 onto the base frame 1, adjust the knob 351 to align it with the position markings 13 on the sidewalls of the base frame 1, and then install the vehicle-mounted bicycle rack onto the frame, making it more convenient to use.

[0048] Please refer to Figures 3 to 6 The front wheel fixing mechanism 2 includes a front wheel fixing frame 21, a front wheel holder 22 and a front wheel fixing seat 23. The front wheel fixing frame 21 is used to limit the front wheel of the bicycle in the left and right directions. When in use, the front wheel fixing frame 21 has fixing tubes on both sides of the front wheel, so that the front wheel of the bicycle can be directly or indirectly limited in the left and right directions of the front wheel. The front wheel holder 22 is adjustable and position-lockable and is mounted on the front wheel fixing frame 21 to fasten the rim of the front wheel of the bicycle from top to bottom. In the description of this embodiment, the front wheel holder 22 is a part parallel to the front wheel fixing frame 21. In other embodiments, the front wheel holder 22 can also be a functional component of the front wheel fixing frame 21 for fastening the rim of the front wheel of the bicycle, which is not limited here.

[0049] Please refer to Figure 4 The front wheel mount 23 is provided with a front wheel hinge portion that rotates with the rotation frame of the front wheel mount 21. A mount stop 231 is provided below the front wheel hinge portion, near the middle of the base frame 1. A mount stop plate 211 extends from the hinged portion of the front wheel mount 21. The mount stop 231 cooperates with the mount stop plate 211 to limit the rotation angle of the front wheel mount 21 relative to the front wheel mount 23. The mount stop plate 211 is not limited to a plate-like structure, but can also include a tubular structure, a strip structure, etc., as long as it serves as an extension of the front wheel mount 21 and can abut against the mount stop 231 to limit rotation.

[0050] The position where the fixing frame limit block 231 is set will not affect the front wheel fixing frame 21 from flipping toward the middle of the base frame 1 to fold and store, and can cooperate with the fixing frame limit plate 211 to provide extremely strong limiting performance. It has a simple structure and is extremely easy to operate, and can be used directly after being opened.

[0051] Furthermore, the front wheel mount 23 includes a rotating bolt 232 and a rotating nut 233. A rotating through-hole is provided at the front wheel hinge portion of the front wheel mount 23. The rotating bolt 232 passes through the front wheel mount 21 and the rotating through-hole to be secured to the rotating nut 233. The rotating nut 233 is a locknut or a self-locking nut. The installation of the rotating bolt 232 is simple. The locknut or self-locking nut ensures that the rotating bolt 232 and the rotating nut 233 do not fall off, while also preventing increased rotational friction due to overtightening.

[0052] The bolt rod of the rotating bolt 232 includes a smooth portion and a threaded portion. The area where the smooth portion is located is adapted to the front wheel fixing frame 21 and the rotating through hole, and the threaded portion is adapted to the rotating nut 233 .

[0053] Furthermore, the fixing frame limit block 231 is located and cooperates with the fixing frame limit plate 211 to limit the front wheel fixing frame 21 at a position with an angle of 95° to 150° relative to the base frame 1. The specific limit angle can be set according to the requirements of the usage scenario. The greater the height distance between the fixing frame limit block 231 and the front wheel hinge part, the smaller the rotation angle, and the closer the fixing frame limit block 231 is to the middle of the base frame 1, the greater the rotation angle. In this embodiment, the preferred angle is 110°.

[0054] The fixing frame limit block 231 and the fixing frame limit plate 211 can be fixed by welding, clamping or other methods.

[0055] In this embodiment, the fixing frame limit block 231 is integrally formed on the front wheel fixing seat 23, and the fixing frame limit plate 211 is welded to the front wheel fixing frame 21. Therefore, the fixing frame limit block 231 and the fixing frame limit plate 211 are both integrally formed or welded, which is convenient to produce and has good firmness.

[0056] Furthermore, the front wheel mount 23 also includes a front wheel sliding mounting block 234 that can slideably fit within the bottom chute 12 of the base frame 1, and an adjustment bolt 235 for fixing and adjusting the distance between the front wheel sliding mounting block 234 and the main body of the front wheel mount 23. Therefore, the front wheel sliding mounting block 234 can be freely slidably arranged within the chute of the base frame 1. After determining the desired installation position of the front wheel mount 23 relative to the base frame 1, the front wheel sliding mounting block 234 and the main body of the front wheel mount 23 can be clamped and fixed within the chute of the base frame 1 using the adjustment bolt 235. Preferably, the bottom chute 12 of the base frame 1 is a T-shaped chute. In other embodiments, the distance between the front wheel sliding mounting block 234 and the main body of the front wheel mount 23 can also be fixed, such that the distance is compatible with the chute of the base frame 1, and no re-tightening is required for the installation process.

[0057] Furthermore, it also includes a front wheel fixing shell 24, which is installed on the outside of the front wheel fixing seat 23 and the base frame 1, and the middle part of the front wheel fixing shell 24 is concave and is provided with a shell mounting through hole. The front wheel fixing shell 24 also includes a shell fixing bolt 241, and the front wheel fixing seat 23 is located at the bottom of the base frame 1 and is provided with a threaded hole corresponding to the shell fixing bolt 241. The shell fixing bolt 241 is used to pass through the shell mounting through hole and the through hole of the base frame 1 and be threadedly connected to the threaded hole of the front wheel fixing seat 23.

[0058] The use of housing fixing bolts 241 allows the front wheel fixing mechanism 2 to be fixed relative to a specific position of the base frame 1, preventing slippage. The housing mounting through-hole is stepped, and the housing fixing bolts 241 are countersunk bolts. The housing mounting through-hole allows the bolt heads of the housing fixing bolts 241 to be positioned within the recess, enhancing the aesthetics.

[0059] On the other hand, in a preferred embodiment, the depression in the middle of the front wheel fixing housing 24 is a front wheel accommodating groove for placing the front wheel, so it is more necessary that the bolt head of the housing fixing bolt 241 cannot be exposed.

[0060] Furthermore, the front wheel fixing housing 24 and the front wheel holder 22 are made of engineering plastic, and the front wheel fixing frame 21 and the front wheel fixing seat 23 are made of metal; thereby, both strength and weight can be ensured.

[0061] Please refer to Figure 1 In this embodiment, a front wheel strap 25 is further included. The front wheel fixing frame 21 is a U-shaped tubular structure. One end of the front wheel strap 25 is arranged on the tubular structure on one side of the front wheel fixing frame 21, and Velcro is provided on the front and back sides of the front wheel strap 25 to facilitate the front wheel fixing frame 21 to be tied and fixed to the base frame 1 when in use, and rolled up on the front wheel fixing frame 21 in a coil when stored.

[0062] The front wheel holder 22 can adopt various structures that can be used to lock the front wheel of the bicycle with the front wheel holder 21. In this embodiment, the front wheel holder 22 includes a rack, a U-shaped fixing piece, a clamping block and a torsion spring. The rack is arranged along the extension direction of the front wheel holder 21 and is connected to the front wheel holder 21. The U-shaped fixing piece is slidably connected to the front wheel holder 21. The clamping block is rotatably connected to the U-shaped fixing piece through a torsion spring. The clamping block is clamped with the rack under the action of the torsion spring. For details, please refer to Chinese patent CN220947812U for the front wheel fixing device of a vehicle-mounted bicycle rack. The structure of the front wheel holder 22 can slide on the front wheel holder 21 on a larger scale, so that it can be clamped and fixed regardless of the diameter of the wheel.

[0063] refer to Figures 7 to 10 An anti-theft lock 5 is also installed on the base frame 1 of the vehicle-mounted bicycle rack. The anti-theft lock 5 includes a lock seat 51 and a flexible lock strip 52.

[0064] The lock seat 51 includes a lock base 511 and a lock seat 512, a lock core 513 for locking and unlocking the lock base 511 and the lock seat 512, and a fixing component for mounting the lock base 511 on the base frame 1; a first mounting through hole is provided on the lock base 511, and the fixing component includes a first mounting bolt 514 for passing through the first mounting through hole to mount the lock base 511; the lock seat 512 is provided with an anti-theft shell 5121, and the anti-theft shell 5121 is used to cover the bolt head of the first mounting bolt 514 when the lock core 513 locks the lock base 511 and the lock seat 512; one end of the flexible lock strip 52 is connected to the lock seat 51, and the other end can pass through the frame, the base frame 1 and the bicycle and then be locked and unlocked by the lock seat 51 through the lock core 513.

[0065] The anti-theft lock 5 of the present invention utilizes the anti-theft shell 5121 of the lock seat 512 to cover or conceal the bolt head of the first mounting bolt 514, and utilizes the flexible locking strip 52 to lock the frame, the base frame 1 and the bicycle together, thereby preventing the vehicle-mounted bicycle frame from being disassembled and stolen together, thereby enhancing the anti-theft performance of the vehicle-mounted bicycle frame.

[0066] In this embodiment, one end of the lock seat 512 is rotatably matched with the lock base 511, the keyhole 5131 and the lock tongue 5132 of the lock core 513 are arranged at the other end of the lock seat 512, and the lock base 511 is provided with a lock groove 5111 adapted to the lock tongue 5132.

[0067] Furthermore, the lock base 511 is provided with a second mounting hole near the rotational position of the locking seat 512. The fixing assembly also includes a second mounting bolt 516, and the bolt head of the second mounting bolt 516 is internally angled. Because the locking seat 512 is rotationally positioned above the lock base 511, the internally angled bolt head is difficult to remove with tools when the lock is tightened. In other preferred embodiments, when the lock is tightened, the locking seat 512 covers the bolt head with a spacing of less than 1 cm, making it impossible to remove the second mounting bolt 516 with common commercially available tools.

[0068] One end of the flexible locking strip 52 can be fixedly or movably connected to the lock base 51, and the other end can cooperate with the lock base 51 so that when the lock base 51 is locked, the other end is also locked to the lock base 51. There are many ways to implement this. For example, one end of the flexible locking strip 52 is a locking convex head, and the lock base 511 has a corresponding locking groove. When the locking convex head is inserted into the locking groove, the lock base 512 and the lock base 511 are locked by the lock core 513 to close the locking groove, so that the flexible locking strip 52 is locked.

[0069] In this embodiment, both ends of the flexible locking strip 52 are provided with rings 521 so as to be sleeved on the locking seat 512 and locked. It is easy to produce and has a beautiful appearance. The ring 521 of the flexible locking strip 52 is directly sleeved between the keyhole 5131 and the rotating part. In other embodiments, a groove can be specially provided at one end of the keyhole 5131 of the locking seat 512, and the other end of the flexible locking strip 52 is sleeved into the groove to be locked.

[0070] In an embodiment, the lock slot 5111 and the first installation through hole are arranged adjacent to each other, thereby facilitating the integrated installation of the anti-theft shell 5121 and the keyhole 5131 .

[0071] Described flexible lock bar 52 is preferably steel wire rope or metal chain.In the present embodiment, select steel wire rope for use, its anti-theft performance is good, easy to use.In order to further improve firmness, lock base 51 adopts metal material to make.

[0072] Furthermore, the fixing assembly also includes a sliding mounting plate 515 that slidably fits within the top chute 11 of the base frame 1. In this embodiment, the top chute 11 is T-shaped, and the sliding mounting plate 515 is provided with a threaded hole that is compatible with the first mounting bolt 514. The first mounting bolt 514 can adjust the tightness between the lock base 51 and the base frame 1 by adjusting the distance between the lock base 511 and the sliding mounting plate 515, thereby determining whether the anti-theft lock 5 can slide freely relative to the base frame 1. In actual installation, both sides of the top chute 11 of the base frame 1 will be occupied by the wheel fixing mechanism. Therefore, regardless of the state, the lock base 51 will not fall off the base frame 1. The preferred method of use is to first move it to the lock position, then adjust the first mounting bolt 514 to tighten it, and then close the lock base 512 to lock it.

[0073] In other embodiments, the top chute 11 or the bottom chute 12 may also be in the shape of a soil, a sword, or a scepter, and its purpose is that various sliding mounting plates or sliding mounting blocks can be installed in the wide groove of the chute and slide, and are connected to other components outside the base frame 1 by bolts or columnar or other rod-like structures extending out of the narrow groove, so that when the components outside the base frame 1 and the sliding mounting or sliding mounting block are close to each other, they can be locked in the chute of the base frame 1. As is known in the art, the top chute 11 or the bottom chute 12 can have both sides opened so that the sliding mounting plate can enter directly from the side, but also have an avoidance groove at both ends to facilitate the placement of the sliding assembly for sliding fit, which is not limited here.

[0074] The anti-theft lock 5 can be conveniently slid on the top slide groove 11 of the base frame 1 through the sliding mounting plate 515, so that a more convenient and safer position can be selected to lock the bicycle.

[0075] In other embodiments, another anti-theft lock for a vehicle-mounted bicycle rack (not shown in the figure) is also provided, which is used to be installed on the base 1 of the vehicle-mounted bicycle rack, including: a lock seat 51 and a flexible locking strip 52, the lock seat 51 includes a lock base 511 and a lock seat 512, a lock core 513 for locking and unlocking the lock base 511 and the lock seat 512, and a fixing component for mounting the lock base 511 on the base 1; a first mounting through hole is provided on the lock base 511, and the fixing component includes a first mounting bolt 514 for passing through the first mounting through hole to mount the lock base 511, and the screw head of the first mounting bolt 514 is an inner angle type; the outer wall of the inner angle type is a circle that is inconvenient to twist, and the interior is a shape including but not limited to a tightening groove-shaped straight line, a cross shape, an inner hexagon, a plum blossom shape, a pentagon, etc.

[0076] The locking seat 512 is provided with an anti-theft cover, which is used to cover the upper surface of the bolt head of the first mounting bolt 514 when the lock cylinder 513 locks the lock base 511 and the locking seat 512. One end of the flexible locking strip 52 is connected to the locking seat 51, and the other end can pass through the frame, base frame 1 and bicycle, and then be locked and unlocked by the locking seat 51 through the lock cylinder 513.

[0077] Please refer to Figures 11 to 13 The vehicle-mounted bicycle rack of the present application also has a detachable mounting and fixing mechanism 4 for mounting the base frame 1 on the frame. The detachable mounting and fixing mechanism 4 includes a first mounting seat 41, a second mounting seat 42, a lower base plate 43 and a detachable fastening assembly.

[0078] The first mounting seat 41 and the second mounting seat 42 are used to be installed and matched on the base frame 1; one end of the lower base plate 43 is hingedly matched with the first mounting seat 41, the middle part passes through the bottom of the frame, and the other end is fastened with the second mounting seat 42 through a detachable fastening assembly, thereby fixing the base frame 1 to the frame.

[0079] The lower base plate 43 includes a base plate hinge portion 431 for rotationally cooperating with the first mounting seat 41, a base plate fixing portion 432 for passing through the bottom of the frame, a base plate mounting portion 433 for detachably fixing to the second mounting seat 42, and a base plate bending portion 434 bent and extended from the base plate hinge portion 431 toward a side away from the base plate fixing portion 432. The base plate bending portion 434 is used to abut and cooperate with the base frame 1 or the first mounting seat 41 to limit the downward rotation angle of the lower base plate 43 relative to the base frame 1.

[0080] In this embodiment, the bottom plate bent portion 434 is used to directly abut and cooperate with the base frame 1, achieving overall coordination of the vehicle-mounted bicycle frame and simplifying the parts. The specific limit angle requirement for the lower bottom plate 43 can be determined based on the height of the frame in the application scenario and the length of the bottom plate fixing portion 432, to determine the angle range within which the lower bottom plate 43 can safely rotate. The limit angle of the lower bottom plate 43 can be controlled by the bending angle and length of the bottom plate bent portion 434. The rule is that the more the bottom plate bent portion 434 is tilted upward relative to the bottom plate fixing portion 432, the smaller the angle at which the lower bottom plate 43 can rotate downward; and the longer the bottom plate bent portion 434, the smaller the angle at which the lower bottom plate 43 can rotate downward.

[0081] In this embodiment, the bottom plate bent portion 434 and the bottom plate fixing portion 432 are substantially parallel, so that when the lower bottom plate 43 is fixed by the detachable fastening assembly, the bottom plate bent portion 434 and the base frame 1 are substantially parallel to each other. In other embodiments, the bottom plate bent portion 434 can be at other angles, and it is only necessary to coordinate the length of the bottom plate bent portion 434 to control the rotation angle of the lower bottom plate 43 within the required range.

[0082] In another embodiment, the bottom plate bent portion 434 is configured to directly abut against the first mounting seat 41. The first mounting seat 41 is provided with a limit block, which abuts against the bottom plate bent portion 434 to limit the downward rotation angle of the lower bottom plate 43 relative to the base frame 1. This allows the detachable mounting and fixing mechanism 4 to independently perform the function of limiting the rotation angle.

[0083] Therefore, in this solution, since the lower base plate 43 and the first mounting seat 41 are hinged, it is only necessary to use a detachable fastening component to fasten or disassemble the second mounting seat 42 and the base plate mounting portion 433, which greatly reduces the workload during installation and disassembly; and through the setting of the base plate bending portion 434, the downward rotation angle of the lower base plate 43 relative to the base frame 1 is limited to prevent the lower base plate 43 from rotating downward relative to the base frame 1 and hitting the paint on the vehicle body during installation, causing scratches or scratches.

[0084] In order to increase the degree of freedom of the rotation angle range of the lower base plate 43, in this embodiment, the base plate mounting portion 433 is formed by bending the base plate fixing portion 432 obliquely upward, so that the lowest point where the lower base plate 43 hits the vehicle body is the base plate fixing portion 432 rather than the base plate mounting portion 433.

[0085] In order to prevent the base frame 1 from loosening after being fixed to the vehicle frame, the base plate hinge portion 431 , the base plate fixing portion 432 and the base plate mounting portion 433 of the lower base plate 43 are concave in shape to match the width of the vehicle frame.

[0086] Furthermore, in this embodiment, the detachable fastening assembly includes a fastening bolt 441 and a fastening nut 442. The fastening nut 442 is fixedly mounted on the bottom plate mounting portion 433. The fastening bolt 441 is configured to pass through the through hole of the second mounting seat 42 and downwardly engage with the fastening nut 442 for threaded fastening. This allows for installation and removal by simply turning the fastening bolt 441 above the second mounting portion, eliminating the need to reach between the roof and the lower bottom plate 43 with one's hands or tools to engage the fastening nut 442. This facilitates installation, saving time and effort.

[0087] The fastening bolt 441 refers to a bolt that can be used to tighten with a nut, or even a screw with a head diameter larger than the diameter of the threaded rod. The fastening bolt 441 can be a conventional external hexagonal bolt or an internal hexagonal bolt. In a preferred embodiment, the fastening bolt 441 can also be a quick-release bolt.

[0088] Thus, the bolt head of the fastening bolt 441 can be an outer hexagon or an inner hexagon or other shapes that are easy to twist, which are not limited here. In this embodiment, preferably, the bolt head is a thin sheet-like inner hexagon structure.

[0089] Preferably, a bolt through hole is provided on the second mounting seat 42 . When the second mounting seat 42 is mounted on the base, the bolt through hole is located on the side of the base, thereby facilitating rotation control of the fastening bolt 441 .

[0090] In this embodiment, bolt through holes are provided on both sides of the second mounting seat 42, and the spacing between the bolt through holes on both sides is greater than the width of the base frame 1; the fastening nut 442 is adapted and fixedly arranged on the bottom plate mounting portion 433, thereby further improving the fastening effect of the detachable mounting and fixing mechanism 4, and also facilitating installation and disassembly.

[0091] The fastening nut 442 can be welded or integrally formed on the bottom plate mounting portion 433 . In this embodiment, the fastening nut 442 is disposed on the bottom surface of the bottom plate mounting portion 433 .

[0092] In other embodiments, the first mounting seat 41 and the second mounting seat 42 can be fixedly installed or set on the base frame 1, and the first mounting seat 41 and the second mounting seat 42 are set at a certain distance from each other.

[0093] In this embodiment, in order to enhance flexibility and to cooperate with the base frame 1 having a slide groove, the first mounting seat 41 and the second mounting seat 42 are both provided with a mounting seat sliding structure that slides with the base frame 1. The specific shape of the mounting seat sliding structure is determined by the slide groove structure of the base frame 1. The design of the mounting seat sliding structure allows the detachable mounting and fixing mechanism 4 to slide freely on the base frame 1. When multiple detachable mounting and fixing mechanisms 4 are required to be installed on the frame of a car corresponding to the same base frame 1, the situation where the spacing between the mounting cross bars of different car frames is different can be applied. Moreover, when not installed, that is, before the second mounting seat 42 and the lower base plate 43 are not fixedly connected, the first mounting seat 41 and the second mounting seat 42 can also move relative to each other, making installation more flexible.

[0094] In one embodiment, the second mounting seat 42 includes a mounting seat body 422, a strip plate 423 welded to the mounting seat body 422, and a wide plate 424 welded to the strip plate 423. The strip plate 423 and the wide plate 424 together form the mounting seat sliding structure of the second mounting seat 42. When the slide groove of the base frame 1 is T-shaped, the cross-section of the mounting seat sliding structure is T-shaped. Welding is used to integrally fix the wide plate 424, the strip plate 423, and the mounting seat body 422, reducing casting costs and improving firmness. The mounting seat body 422 is an overall rectangular plate-shaped structure, and the two bolt through holes are provided at both ends of the mounting seat body 422. In other embodiments, the wide plate 424, the strip plate 423, and the mounting seat body 422 can also be fixed to each other by rivets, bolts, or the like.

[0095] The mounting seat sliding structure of the first mounting seat 41 can be the same as that of the second mounting seat 42, and it is only necessary to replace the bolt through-hole arrangement with a hinged portion hinged to the lower base plate 43. Preferably, in this embodiment, the base frame 1 has two bottom chutes 12, which simplifies the structure and facilitates installation. The first mounting seat 41 can be composed of two T-shaped structural components, the horizontal plate of the T-shaped structural component freely sliding in the bottom chutes 12, and the vertical plate of the T-shaped structural component is provided with a hinged portion hinged to the lower base plate 43.

[0096] Please refer to Figures 14 to 18 The rear wheel fixing mechanism 3 includes a rear wheel fixing frame 31 , a rear wheel fixing seat 32 and an adjustment component 33 .

[0097] The rear wheel fixing frame 31 is used to limit the rear wheel of the bicycle in the left-right direction. In this embodiment, the entire frame is a U-shaped tubular structure. In other embodiments, the frame is not limited to other structures that can directly or indirectly limit the rear wheel of the bicycle in the left-right direction.

[0098] The rear wheel fixing seat 32 is used to be installed on the base frame 1. The rear wheel fixing seat 32 is provided with a rear wheel hinge portion that rotates with the rear wheel fixing frame 31. In this embodiment, the rear wheel hinge portion is formed by opening a rotation through hole on the body of the rear wheel fixing seat 32 and rotating with a rotating pin or a bolt and nut. In other embodiments, other rotational cooperation structures can also be used.

[0099] The adjustment assembly 33 includes an adjustment rack 331 provided on the rear wheel fixing frame 31, an adjustment sleeve 332 that slides relative to the length direction of the adjustment rack 331, an adjustment block 333 hinged on the adjustment sleeve 332 and capable of engaging with the adjustment rack 331, a reset member for driving the engagement between the adjustment block 333 and the adjustment rack 331, and an adjustment table 334 located on the side of the rear wheel hinge away from the middle of the base frame 1. The reset member can be a torsion spring or other elastic member capable of resetting, and the adjustment table 334 can be a part of the rear wheel fixing seat 32, or a separately provided shell that is fixedly connected to the rear wheel fixing seat 32. The adjustment table 334 should be in a fixed position relationship with the rear wheel fixing seat 32.

[0100] An adjusting abutment block 3321 is provided on one side of the adjusting sleeve 332 close to the adjusting table 334 , and the adjusting abutment block 3321 is used to abut against the adjusting table 334 to limit the maximum angle of the rear wheel fixing frame 31 to flip outward relative to the base frame 1 .

[0101] The present invention is based on the principle of use of the rear wheel fixing mechanism 3. In this scheme, the bicycle is placed on the base frame 1, the front wheel of the bicycle is located on the front wheel fixing frame, and the rear wheel of the bicycle is located on the rear wheel fixing frame 31. The rear wheel fixing frame 31 only needs to be limited and fixed on the side that is flipped outward relative to the middle part of the base frame 1. The flipping angle of the rear wheel fixing frame 31 relative to the base frame 1 is controlled by an adjustment component 33 with a simple structure, good firmness and easy adjustment. The maximum flipping angle of the rear wheel fixing frame 31 relative to the base frame 1 can be increased by pressing the adjustment block 333 to control the adjustment sleeve 332 to slide upward relative to the adjustment rack 331. The maximum flipping angle of the rear wheel fixing frame 31 relative to the middle part of the base frame 1 can be reduced by controlling the adjustment sleeve 332 to slide downward relative to the adjustment rack 331.

[0102] In this embodiment, a rear wheel holder 36 is further included, which is adjustable and position-lockable and is mounted on the rear wheel fixing frame 31 . The rear wheel holder 36 is used to fasten the rim of the front wheel of the bicycle.

[0103] Furthermore, in order to enhance the firmness of the adjusting sleeve 332 so that the adjusting sleeve 332 will not fall off relative to the adjusting rack 331 when the rear wheel fixing frame 31 is under force, in this embodiment, the adjusting sleeve 332 is slidably sleeved on the adjusting rack 331 and the rear wheel fixing frame 31 where it is located.

[0104] Generally speaking, a vehicle-mounted bicycle rack will be set with an optimal flip angle of the rear wheel fixing frame 31 when fixing the bicycle. The optimal flip angle is defined as a predetermined fixed angle. When the rear wheel fixing frame 31 is flipped to the predetermined fixed angle relative to the base frame 1, the bottom surface of the adjustment abutment block 3321 and the surface of the adjustment table 334 are in contact with each other; in this way, the contact area between the adjustment abutment block 3321 and the adjustment table 334 is maximized, and the torque force that can be withstood is also maximized.

[0105] Furthermore, the specific size of the predetermined fixed angle can be set according to different styles and models of vehicle-mounted bicycle racks, and its preferred range is 90° to 100°. In this embodiment, the predetermined fixed angle is 90°.

[0106] The adjustment table 334 is provided with a table groove. When the rear wheel fixing frame 31 is flipped to a predetermined fixed angle relative to the base frame 1, the bottom surface of the adjustment abutment block 3321 is in contact with the inner plane of the table groove. In this embodiment, the width of the table groove is slightly larger than the width of the adjustment abutment block 3321.

[0107] A first curved surface is provided on the sidewall of the table recess, away from the center of the base frame 1. A second curved surface is provided on the sidewall of the bottom of the adjustment abutment block 3321, away from the center of the base frame 1. When the rear wheel mount 31 is flipped relative to the base frame 1 to a position greater than a predetermined fixed angle, the first curved surface abuts the second curved surface, thereby increasing the contact area between the adjustment abutment block 3321 and the adjustment table 334 at different flip angles, thereby achieving greater abutment bearing capacity. Since a bicycle is generally at a predetermined fixed angle when locked, the rear wheel mount 31 continues to flip outward relative to the base frame 1 primarily to facilitate placement and removal of the bicycle.

[0108] Please refer to Figure 18 When the rear wheel fixing frame 31 is tilted 180 degrees relative to the base frame 1, the rear wheel fixing frame 31 is tilted 180 degrees relative to the base frame 1. According to the user's habits, it can also be flipped to a large angle of 150°, 160° or more.

[0109] The rear wheel fixing seat 32 is provided with a rear wheel sliding assembly 34 for slidingly cooperating with the base frame 1, and a position control assembly 35 for releasing and strengthening the fixed relationship with the base frame 1. The position control assembly 35 controls the position fixation by a hand-tightening knob 351, so that the applicable bicycle frame can be adapted to different models of bicycles, thereby improving the scope of application and being extremely convenient to use.

[0110] The rear wheel fixing plate 352 is fixed to the rear wheel fixing plate 352 by the sliding fixing plate 353 and the rear wheel fixing plate 352, and the rear wheel fixing plate 352 is fixed to the rear wheel fixing plate 352 by the sliding fixing plate 353 and the rear wheel fixing plate 352.

[0111] The rear wheel sliding assembly 34 includes a rear wheel sliding mounting block that can be slidably fitted in the sliding groove of the base frame 1. The rear wheel sliding mounting block and the rear wheel fixing seat 32 are connected together and can slide synchronously.

[0112] Please refer to Figure 2 、 Figure 14 and Figure 15 In this embodiment, two detachable mounting and fixing mechanisms 4 are mounted on the base frame 1. One detachable mounting and fixing mechanism 4 is freely slidable on the base frame 1, while the second mounting base of the other detachable mounting and fixing mechanism 4 is a component of the rear wheel mounting base. In other embodiments, the second mounting base 42 of one detachable mounting and fixing mechanism 4 is fixedly connected to the rear wheel mounting base. In either embodiment, the detachable mounting and fixing mechanism 4 can be moved or fixed in a fixed position together with the rear wheel mounting mechanism 3.

[0113] In this embodiment, the rear wheel mount 32 is provided with a through hole corresponding to a fastening nut 442 on the base plate mounting portion 433 of the lower base plate 43. This through hole is used to allow a fastening bolt 441 to pass through and threadably connect with the fastening nut 442. By integrating the detachable mounting and fixing mechanism directly with the rear wheel mount 32, the rear wheel mounting mechanism 3 is more secure when the bicycle rack is mounted on the vehicle frame. During use, the front and rear wheel wheelbase of the desired bicycle are first determined. Based on this wheelbase, the rear wheel mount 32 with the detachable mounting and fixing mechanism 4 is adjusted and fixed in place according to the position markings 13. Generally, there are two vehicle frames for mounting the base frame 1. Therefore, the other detachable mounting and fixing mechanism 4 on the base frame 1 is slid to a position corresponding to the distance between the rear wheel mount 32 and the vehicle frame, thereby mounting the base frame 1 on the vehicle frame. Of course, the detachable mounting and fixing mechanism 4 can also slide freely before installation, making installation more convenient. If there are three or more automobile frames for mounting the base frame 1 , it is only necessary to match more sliding detachable mounting and fixing mechanisms 4 .

[0114] It should be noted that the description of the front wheel and rear wheel of the bicycle used in this application is a relative concept; in actual use, the front wheel of the bicycle can be placed in the rear wheel fixing mechanism 3 and the rear wheel of the bicycle can be placed in the front wheel fixing mechanism 2 for fixing. Alternatively, the front wheel fixing mechanism 2 of this application can be installed on a bicycle rack with other structures to fix the rear wheel, or the rear wheel fixing mechanism 3 of this application can be installed on a bicycle rack with other structures to fix the front wheel. In addition, the front wheel fixing mechanism 2 of this application can be adjusted by adjusting the angle limit through the adjustment component 33, and the partial structure of the front wheel fixing seat has the function of a second mounting seat and is detachably connected with the detachable mounting fixing mechanism 4, all of which fall within the scope of protection of this utility model.

[0115] The above are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention fall within the protection scope of the present invention.

Claims

1. A front wheel fixing mechanism for use on a base frame of a vehicle-mounted bicycle rack, characterized in that: include: A front wheel fixing frame, the front wheel fixing frame is used to limit the front wheel of the bicycle in the left and right directions; A front wheel holder, which is adjustable and position-lockably mounted on the front wheel fixing frame to fasten the rim of the front wheel of the bicycle; A front wheel fixing seat is provided on the front wheel fixing seat, and a front wheel hinge portion is provided on the front wheel fixing seat, which is rotatably matched with the front wheel fixing frame, and a fixing frame limiting block is provided on one side below the front wheel hinge portion and near the middle of the base frame. The front wheel fixing frame is provided with a fixing frame limiting plate extending from the hinge point with the front wheel fixing frame, and the fixing frame limiting block is used to cooperate with the fixing frame limiting plate to limit the rotation angle of the front wheel fixing frame relative to the front wheel fixing seat.

2. The front wheel fixing mechanism according to claim 1, characterized in that: The front wheel fixing seat includes a rotating bolt and a rotating nut. The front wheel hinge portion of the front wheel fixing seat is provided with a rotating through hole. The rotating bolt passes through the front wheel fixing frame and the rotating through hole and is fixed to the rotating nut. The rotating nut is a locking nut.

3. The front wheel fixing mechanism according to claim 2, characterized in that: The bolt rod of the rotating bolt includes a smooth portion and a threaded portion. The area where the smooth portion is located is adapted to the front wheel fixing frame and the rotating through hole, and the threaded portion is adapted to the rotating nut.

4. The front wheel fixing mechanism according to claim 1, characterized in that: The fixing frame limit block is located and cooperates with the fixing frame limit plate to limit the front wheel fixing frame at a position of 95° to 150° relative to the base frame. The fixing frame limit block is integrally formed or welded to the front wheel fixing seat, and the fixing frame limit plate is integrally formed or welded to the front wheel fixing frame.

5. The front wheel fixing mechanism according to claim 1, characterized in that: The front wheel fixing seat also includes a front wheel sliding mounting block that can be slidably matched in the sliding groove of the base frame, and an adjusting bolt for fixing and adjusting the distance between the front wheel sliding mounting block and the front wheel fixing seat body.

6. The front wheel fixing mechanism according to claim 1, characterized in that: It also includes a front wheel fixing shell, which is installed on the outside of the front wheel fixing seat, and the middle part of the front wheel fixing shell is concave and is provided with a shell mounting through hole; the front wheel fixing shell also includes a shell fixing bolt, and the front wheel fixing seat is located at the bottom of the base frame and is provided with a threaded hole corresponding to the shell fixing bolt, and the shell fixing bolt is used to pass through the shell mounting through hole and the through hole of the base frame and be threadedly connected to the threaded hole of the front wheel fixing seat.

7. The front wheel fixing mechanism according to claim 6, characterized in that: The housing mounting through hole is stepped, and the housing fixing bolt is a countersunk bolt.

8. The front wheel fixing mechanism according to claim 1, characterized in that: It also includes a front wheel strap, the front wheel fixing frame is a U-shaped tubular structure, one end of the front wheel strap is arranged on the tubular structure on one side of the front wheel fixing frame, and Velcro is provided on the front and back sides of the front wheel strap to facilitate the front wheel fixing frame to be tied and fixed to the base frame when in use, and rolled up in a circle on the front wheel fixing frame when stored.

9. A vehicle-mounted bicycle rack, characterized in that: It comprises a rear wheel fixing mechanism, a base frame and the front wheel fixing mechanism according to any one of claims 1 to 8; the front wheel fixing mechanism and the rear wheel fixing mechanism are mounted on the base frame.

10. The vehicle-mounted bicycle rack according to claim 9, characterized in that: The bottom of the base frame is provided with a bottom slide groove along its length direction, and the bottom slide groove is T-shaped; the front wheel fixing seat also includes a front wheel sliding mounting block that can be slidably fitted in the bottom slide groove, and an adjusting bolt for fixing the front wheel sliding mounting block and the front wheel fixing seat body, thereby fixing the front wheel fixing seat to the base frame.

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