Vehicle-mounted bicycle fixing rack and license plate turnover device thereof
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO ZHONGWODE OUTDOOR EQUIP CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-08-07
AI Technical Summary
[0005]本实用新型针对车载自行车固定架在车牌安装中存在的缺陷:1.方向不可调:传统车牌固定机构无法在横向行驶状态与竖向收纳状态间切换,导致收纳干涉;2.定位不可靠:简单翻转机构缺乏精准限位,车辆颠簸易造成车牌移位;3.安装不便捷:螺栓固定方式操作繁琐,无法快速拆装车牌;4.减震缺失:车牌与安装框间震动异响频发
[0010] This application provides a vehicle-mounted bicycle mounting bracket and its license plate flipping device. The license plate flipping device allows for quick, tool-free operation, thus solving the problem of inconvenient installation. After the license plate is inserted into the mounting slot from top to bottom, rotating the knob drives a lever to press the edge of the license plate firmly, resulting in a short installation time.
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Figure CN224602823U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle-mounted equipment technology, and in particular to a vehicle-mounted bicycle mounting bracket and its license plate flipping device. Background Technology
[0002] In the field of automotive in-vehicle equipment technology, the application of bicycle mounts is becoming increasingly widespread. When a bicycle mount is installed in a vehicle, the installation and use of the license plate faces specific scenario requirements: under normal road driving conditions, the license plate must be placed horizontally to comply with traffic management regulations regarding the display direction of the license plate, ensuring that the license plate information can be accurately identified by traffic monitoring equipment; when the bicycle mount needs to be stored, its spatial layout changes. If the license plate remains horizontally placed, storage may be difficult due to space constraints, and it may even interfere with the bicycle rack or other vehicle components, affecting the convenience and safety of storage.
[0003] Current bicycle mounters on the market have significant shortcomings in their license plate mounting mechanisms: First, existing technologies lack directional adjustment capabilities. Most mechanisms do not include a structure that allows the license plate to be flexibly switched between horizontal and vertical orientations, failing to meet the needs of both driving and storage scenarios simultaneously. Second, existing license plate mounting mechanisms suffer from poor positioning and fixing reliability. Some mechanisms with simple flipping functions lack efficient positioning and locking devices, making the license plate prone to shaking and shifting due to bumps and other factors during vehicle operation. This can lead to unclear license plate information and pose a safety hazard of the license plate falling off. Furthermore, existing license plate fixing methods, such as bolt fixing, involve complex, time-consuming, and laborious procedures when installing the license plate onto the frame or bicycle rack, hindering quick installation and removal by users. Many license plate mounting mechanisms do not consider vibrations during vehicle operation, leading to rattling noises between the license plate and frame, affecting user experience, and potentially damaging the license plate over time.
[0004] Therefore, existing vehicle-mounted bicycle license plate mounting mechanisms have many problems that urgently need to be solved in terms of flexibility of direction adjustment, reliability of positioning and fixing, convenience of installation, and shock absorption and noise reduction. There is an urgent need to design a mechanism that can achieve rapid flipping, accurate positioning, reliable fixing of license plates and shock absorption function to meet actual use needs. Summary of the Invention
[0005] This utility model addresses the following defects in license plate installation using vehicle-mounted bicycle mounting brackets: 1. Inability to adjust direction: Traditional license plate fixing mechanisms cannot switch between lateral driving and vertical storage states, leading to storage interference; 2. Unreliable positioning: Simple flipping mechanisms lack precise positioning limits, making the license plate easily shift due to vehicle bumps; 3. Inconvenient installation: Bolt fixing methods are cumbersome and cannot quickly install or remove the license plate; 4. Lack of shock absorption: Frequent vibrations and abnormal noises occur between the license plate and the mounting frame.
[0006] The fundamental purpose of this utility model is to provide a license plate flipping device that integrates flipping positioning, bidirectional locking, quick installation, and active shock absorption, thereby solving the above-mentioned problems through mechanical innovation design.
[0007] This application provides a vehicle-mounted bicycle mounting bracket and its license plate flipping device, wherein the license plate flipping device can be precisely flipped 90° via a four-bar linkage mechanism.
[0008] This application provides a vehicle-mounted bicycle mounting bracket and its license plate flipping device, wherein the license plate flipping device reduces the space occupied by 70% in the vertical storage state and avoids interference with the bicycle frame.
[0009] This application provides a vehicle-mounted bicycle mounting bracket and its license plate flipping device, wherein the license plate flipping device has a dual-mode locking for both driving and storage to solve the problem of unreliable positioning.
[0010] This application provides a vehicle-mounted bicycle mounting bracket and its license plate flipping device. The license plate flipping device allows for quick, tool-free operation, thus solving the problem of inconvenient installation. After the license plate is inserted into the mounting slot from top to bottom, rotating the knob drives a lever to press the edge of the license plate firmly, resulting in a short installation time.
[0011] This application provides a vehicle-mounted bicycle mounting bracket and its license plate flipping device, wherein the inclined metal spring of the license plate flipping device applies continuous downward pressure to the license plate, eliminating installation gaps and helping to eliminate abnormal noise.
[0012] A major advantage of this invention is that it provides a vehicle-mounted bicycle mounting bracket and its license plate flipping device.
[0013] Another advantage of this utility model is that it provides a license plate flipping device for a vehicle-mounted bicycle mounting bracket, comprising:
[0014] Fixed support, suitable for installation on the main body of the fixed frame;
[0015] A license plate mounting mechanism having a mounting slot for accommodating a license plate;
[0016] The flip-up assembly pivotally connects the fixed support and the license plate mounting mechanism, allowing the license plate mounting mechanism to switch between a horizontal use state and a vertical storage state.
[0017] A positioning element, provided on the flipping assembly, is used to lock the position in both the horizontal and vertical states;
[0018] The locking device secures the license plate mounting mechanism and the fixed support in the lateral position.
[0019] According to one embodiment of this application, the flipping component includes:
[0020] Pivoting link;
[0021] The first connecting piece is fixed on the fixed support and pivotally connected to one end of the pivoting connecting rod;
[0022] The second connector is fixed to the back of the license plate mounting mechanism and pivotally connected to the other end of the pivoting link.
[0023] According to one embodiment of this application, the first connector is provided with a one-way opening slot, and the end of the pivoting link can be pivotally accommodated in the opening slot.
[0024] According to one embodiment of this application, it further includes:
[0025] The first limiting mechanism and the second limiting mechanism are respectively set on the fixed support and correspond to the horizontal and vertical states;
[0026] The pivoting link is embedded in the limiting groove of the corresponding limiting mechanism when switching states.
[0027] According to one embodiment of this application, the positioning element is a ball bearing, which is disposed on the first limiting mechanism and the second limiting mechanism; the pivoting connecting rod is provided with a positioning hole that cooperates with the ball bearing to achieve position locking.
[0028] According to one embodiment of this application, the locking device includes:
[0029] The locking mechanism is located on the back of the license plate mounting mechanism;
[0030] Safety buckle, located on the side of the fixed support;
[0031] When the license plate installation mechanism is in a horizontal position, the locking mechanism is engaged and fixed with the safety buckle.
[0032] According to one embodiment of this application, a limiting clip is also included, disposed on the back of the license plate mounting mechanism; when in a vertical state, the limiting clip elastically clamps the pivot link to prevent positional displacement.
[0033] According to one embodiment of this application, the license plate mounting mechanism further includes a license plate fixing module, comprising:
[0034] License plate paddle shifters, featuring a rotatable knob and a linked paddle;
[0035] Rotating the knob drives the paddle to press against the edge of the license plate, preventing the license plate from falling out of the mounting slot.
[0036] According to one embodiment of this application, it also includes at least one spring sheet, which partially protrudes from the inner wall of the mounting groove; when the license plate is installed, the spring sheet provides an elastic preload to suppress vibration and abnormal noise.
[0037] According to one embodiment of this application, the spring is a metal spring sheet, which is inclinedly disposed at the top of the mounting groove to apply a downward pressing force to the license plate.
[0038] According to one embodiment of this application, the pivoting trajectory of the flipping component is mechanically constrained, and the angle between the lateral and vertical states is 90 degrees.
[0039] According to one embodiment of this application, the knob drives the paddle to move linearly through a threaded structure, thereby adjusting the tightness of the license plate.
[0040] According to another aspect of this application, this application further provides a vehicle-mounted bicycle mounting bracket, including...
[0041] The main body of the fixed frame; and
[0042] The license plate flipping device as described above, wherein the license plate flipping device is disposed on the fixed frame body.
[0043] The further objectives and advantages of this invention will become fully apparent from the following description and accompanying drawings.
[0044] These and other objects, features and advantages of this invention will be fully apparent from the following detailed description and accompanying drawings. Attached Figure Description
[0045] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. In the drawings, unless otherwise specified, the same reference numerals are used to denote the same parts. Wherein:
[0046] Figure 1 This is a schematic diagram of the overall structure of a vehicle-mounted bicycle mounting bracket according to the first preferred embodiment of the present invention.
[0047] Figure 2A This is a schematic diagram of the license plate flipping device of the bicycle mounting bracket according to the first preferred embodiment of the present invention in normal use.
[0048] Figure 2B This is a schematic diagram of the license plate flipping device of the vehicle-mounted bicycle mounting bracket according to the first preferred embodiment of the present invention in the storage state.
[0049] Figure 3A and Figure 3B This is an exploded view of the license plate flipping device of the vehicle-mounted bicycle mounting bracket according to the first preferred embodiment of the present invention.
[0050] Figure 4 This is a schematic diagram of the flipped state of the bicycle mounting bracket according to the first preferred embodiment of the present invention. Detailed Implementation
[0051] It should be noted that the embodiments shown in the accompanying drawings are merely examples used to specifically and vividly explain and illustrate the concept of the present invention. They are not necessarily drawn to scale in terms of size and structure, nor do they constitute a limitation on the concept of the present invention.
[0052] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the various accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.
[0053] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.
[0054] Refer to the accompanying drawings in this application specification. Figures 1 to 4 As shown in the following description, a bicycle mounting bracket and its license plate flipping device according to a first preferred embodiment of this application are illustrated. The bicycle mounting bracket includes a bracket body 10 and a license plate flipping device 20 disposed on the bracket body 10. The bracket body 10 can be disposed on the roof or other location on the vehicle body and is used to secure the bicycle. The license plate flipping device 20 is disposed on one side of the bracket body 10, and the bicycle license plate can be disposed on the license plate flipping device 20. The license plate flipping device 20 allows the bicycle license plate to be switched between a horizontal use state and a vertical storage state.
[0055] Specifically, the license plate flipping device 20 includes a fixed support 21, a license plate mounting mechanism 22 disposed on the fixed support 21, and a flipping assembly 23. The fixed support 21 and the license plate mounting mechanism 22 are pivotally connected by the flipping assembly 23, allowing the license plate mounting mechanism 22 to rotate relative to each other. The fixed support 21 of the license plate flipping device 20 can be fixed to the fixed frame body 10, and the license plate mounting mechanism 22 of the license plate flipping device 20 can rotate relative to the fixed frame body 10.
[0056] The license plate flipping device 20 has a license plate mounting mechanism 22 with a mounting groove 220, in which a license plate can be installed. The license plate mounting mechanism 22 has a front and a back, wherein the mounting groove 220 is located on the front of the license plate mounting mechanism 22, and the flipping component 23 is disposed on the back of the license plate mounting mechanism 22.
[0057] The flipping assembly 23 includes a pivoting link 231, a first connector 232, and a second connector 233. One end of the pivoting link 231 is pivotally connected to the first connector 232, allowing the pivoting link 231 to rotate relative to the first connector 232. The other end of the pivoting link 231 is pivotally connected to the back of the license plate mounting mechanism 22 via the second connector 233. The end of the pivoting link 231 of the flipping assembly 23 is connected to the first connector 232 and the second connector 233, forming a link structure with both ends capable of relative rotation. The license plate mounting mechanism 22 can rotate relative to the fixed support 21, allowing the license plate mounting mechanism 22 to switch between a horizontal and a vertical position.
[0058] The first connector 232 is disposed on the fixed support 21. Preferably, in a specific example of this application, the first connector 232 has a one-way opening slot, and the pivoting link 231 is pivotally disposed within the one-way opening slot of the first connector 232.
[0059] The second connector 233 pivotally positions one end of the pivoting link 231 on the back side of the license plate mounting mechanism 22. Preferably, in a specific example of this application, the second connector 233 and the pivoting link 231 are positioned on the back side of the license plate mounting mechanism 22 via a pivot element.
[0060] like Figure 4As shown, when it is necessary to adjust the position of the license plate mounting mechanism 22, such as flipping it from a horizontal use state to a vertical storage state, the pivot link 231 of the flipping assembly 23 is rotated, wherein the license plate mounting mechanism 22 rotates synchronously with the pivot link 231, flipping it from a horizontal state to a vertical state.
[0061] The flipping assembly 23 further includes a first limiting mechanism 234 and a second limiting mechanism 235, wherein the first limiting mechanism 234 is disposed on the first connector 232, corresponding to the position of the pivot link 231 when the license plate mounting mechanism 22 is in the lateral use state; the second limiting mechanism 235 is disposed on the fixed support 21, corresponding to the position of the pivot link 231 when the license plate mounting mechanism is in the vertical storage state; wherein the first limiting mechanism 234 and the second limiting mechanism 235 are used to limit the rotation position of the pivot link 231, prevent the pivot link 231 from rotating excessively, and thereby limit the position of the license plate mounting mechanism 22 by means of the pivot link 231.
[0062] The first limiting mechanism 234 and the second limiting mechanism 235 have limiting grooves. When the license plate installation mechanism 22 is in the lateral use state, the pivot link 231 is held in the limiting groove of the first limiting mechanism 234 by the first limiting mechanism 234. When the license plate installation mechanism 22 is in the vertical storage state, the pivot link 231 is held in the limiting groove of the second limiting mechanism 235 by the second limiting mechanism 235.
[0063] The flipping assembly 23 employs a four-bar linkage principle to achieve precise angle control: the pivoting link 231 is a rigid metal rod, the length of which is designed according to the spacing requirements of the horizontal and vertical states; the first connecting member 232 is welded to the side wall of the fixed support 21, and the opening direction of its one-way slot is vertically upward, restricting the link to rotate only within a predetermined plane; the second connecting member 233 is hinged to the mounting seat on the back of the license plate mounting mechanism 22 via a pin, and the axis of the pin is parallel to the pivot axis of the first connecting member 232, ensuring that the link's movement trajectory is planar; when the pivoting link 231 is embedded in the limiting slot of the first limiting mechanism 234, the license plate mounting mechanism 22 is in a horizontal horizontal state; when the pivoting link 231 rotates 90° and is embedded in the limiting slot of the second limiting mechanism 235... Figure 2B The license plate mounting mechanism 22 is in a vertically retracted state, and the switching angle between the two states is strictly limited to 90°.
[0064] The license plate flipping device 20 further includes at least one positioning element 24, wherein the positioning element 24 is disposed on the flipping assembly 23 for positioning the pivot link 231. In this preferred embodiment of the application, the positioning element 24 is disposed on the first limiting mechanism 234 and the second limiting mechanism 235, and the pivot link 231 is provided with a positioning hole corresponding to the positioning element 24. When the license plate mounting mechanism 22 is adjusted to the horizontal use state or the vertical storage state, the positioning element 24 corresponds to the positioning hole of the pivot link 231 to quickly position the pivot link 231.
[0065] Preferably, in a specific example of this application, the positioning element 24 may be, but is not limited to, a ball bearing.
[0066] The first / second limiting mechanisms 234 and 235 have countersunk holes at the bottom of their limiting grooves, and springs and ball bearings, i.e., positioning elements 24, are installed inside. Correspondingly, each end of the pivoting link 231 has a hemispherical positioning hole 2311; when the pivoting link 231 rotates to a horizontal or vertical position, the ball bearings are engaged in the positioning holes 2311 under the action of the springs, producing a "click" sound to indicate successful positioning, while also providing mechanical resistance to prevent accidental displacement.
[0067] The license plate flipping device 20 further includes a locking device 25, wherein the locking device 25 is disposed on the back of the license plate mounting mechanism 22 and the fixed support 21. When the license plate mounting mechanism 22 is in the lateral use state, the locking device 25 is in the locked state, and the license plate mounting mechanism 22 and the fixed support 21 are fastened by the locking device 25 to prevent the position of the license plate mounting mechanism 22 from moving or rotating in the use state.
[0068] The locking device 25 includes a locking mechanism 251 and a safety buckle 252. The locking mechanism 251 is located on the back of the license plate mounting mechanism 22, and the safety buckle 252 is located on one side of the fixed support 21 and corresponds to the position of the safety buckle 252. When the license plate mounting mechanism 22 is adjusted to the lateral use state, the locking mechanism 251 and the safety buckle 252 engage with each other, thereby fixing the position of the license plate mounting mechanism 22.
[0069] In this preferred embodiment of the present application, the locking mechanism 251 may be, but is not limited to, a spring lock or a torsion spring lock.
[0070] The license plate flipping device 20 further includes a limiting clamp 26, wherein the limiting clamp 26 is disposed on the back of the license plate mounting mechanism 22, and the position of the limiting clamp 26 corresponds to the pivot link 231 of the flipping assembly 23. When the license plate mounting mechanism 22 is adjusted to the vertical storage position, the limiting clamp 26 clamps the pivot link 231 under elastic action, preventing the license plate mounting mechanism 22 from moving or rotating. In other words, when the license plate mounting mechanism 22 is in the vertical storage state, the limiting clamp 26 and the first limiting mechanism 234 work together to hold the pivot link 231 in the limiting groove, preventing the position of the license plate mounting mechanism 22 from moving or rotating.
[0071] The license plate flipping device 20 further includes at least one license plate lever 27, wherein the license plate lever 27 is disposed on the license plate mounting mechanism 22 for fixing the license plate placed in the license plate mounting mechanism 22. The license plate lever 27 includes a lever 271 and a knob 272 connected to the lever 271, wherein the knob 272 is used to adjust the position and tightness of the lever 271. When the license plate is placed in the mounting slot of the license plate mounting mechanism 22, by adjusting the knob 272, the lever 271 is blocked on the outside of the license plate, and the distance between the lever 271 and the license plate is adjusted to prevent the license plate from falling out of the mounting slot.
[0072] The license plate flipping device 20 further includes at least one spring piece 28, wherein the spring piece 28 is disposed in the license plate mounting mechanism 22, and the spring piece 28 at least partially protrudes into the mounting groove of the license plate mounting mechanism 22. When the license plate is installed in the license plate mounting mechanism 22, the spring piece 28 contacts the license plate and provides an elastic preload force on the license plate, so that the license plate is fastened in the license plate mounting mechanism 22 to prevent the license plate from vibrating and making abnormal noise.
[0073] It is worth mentioning that the locking device 25 adopts a dual locking mechanism, including horizontal locking and vertical locking. When the license plate mounting mechanism 22 is in the horizontal position, the spring latch 251 on its back automatically springs into the safety buckle 252 slot on the side wall of the fixed support 21, and can only be released by manually pressing the latch. The limiting clamp 26 on the back of the license plate mounting mechanism 22 is made of spring steel sheet and has a U-shaped clamping structure. When the pivoting link 231 is rotated into the vertical position, the elastic clamp 261 of the limiting clamp 26 automatically clamps the middle of the link. Figure 4 It provides continuous clamping force to resist vehicle bumps.
[0074] The license plate mounting mechanism 22 has a license plate insertion port at the top of its mounting groove 220 and is closed at the bottom. The license plate fixing module includes an anti-detachment mechanism and a shock-absorbing mechanism. A knob 272 passes through the top wall of the mounting groove 220 and is connected to a lever 271 at the bottom via a threaded rod 2721. When the knob 272 is rotated clockwise, the threaded rod 2721 moves the lever 271 upwards until it presses against the lower edge of the license plate. Two inclined metal springs 28 at 30° are provided on the inner top wall of the mounting groove 220. After the license plate is inserted, the protrusions 281 of the springs 28 press down on the top of the license plate with a pre-tightening force of 510N, eliminating the vibration gap between the license plate and the mounting groove 220.
[0075] The license plate flipping device of this preferred embodiment can achieve the following technical effects compared with the prior art: the user can complete the 90° state switching of the license plate with one hand, and the steel ball positioning 24 and the limiting groove ensure positional accuracy; secondly, the horizontal state is rigidly locked by the locking device 25, and the vertical state is flexibly clamped by the limiting clamp 26, adapting to different working conditions; thirdly, after the license plate is inserted, rotating the knob 272 can complete the fixation, the spring piece 28 automatically suppresses abnormal noise, and the disassembly process is reversed.
[0076] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.
[0077] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations fall within the protection scope of this invention.
Claims
1. A license plate flipping device for a bicycle mounting bracket, characterized in that, include: Fixed support (21), suitable for installation on the main body (10) of the fixed frame; The license plate mounting mechanism (22) has a mounting slot (220) for accommodating the license plate; The flip assembly (23) pivotally connects the fixed support (21) and the license plate mounting mechanism (22), allowing the license plate mounting mechanism (22) to switch between a horizontal use state and a vertical storage state; A positioning element (24) is provided on the flip assembly (23) for locking the position in the horizontal / vertical state; The locking device (25) secures the license plate mounting mechanism (22) and the fixed support (21) in the lateral position.
2. The license plate flipping device as described in claim 1, characterized in that, The flipping component (23) includes: Pivoting link (231); The first connecting piece (232) is fixed on the fixed support (21) and pivotally connected to one end of the pivoting link (231); The second connector (233) is fixed to the back of the license plate mounting mechanism (22) and pivotally connected to the other end of the pivot link (231).
3. The license plate flipping device as described in claim 2, characterized in that, The first connector (232) is provided with a one-way opening slot, and the end of the pivoting link (231) can be pivotally accommodated in the opening slot.
4. The license plate flipping device as described in claim 2, characterized in that, Also includes: The first limiting mechanism (234) and the second limiting mechanism (235) are respectively set on the fixed support (21) and correspond to the horizontal and vertical states; The pivot link (231) is embedded in the limiting groove of the corresponding limiting mechanism when switching states.
5. The license plate flipping device as described in claim 4, characterized in that, The positioning element (24) is a ball bearing, which is located on the first / second limiting mechanism (234, 235); the pivot link (231) is provided with a positioning hole that cooperates with the ball bearing to achieve position locking.
6. The license plate flipping device as described in claim 1, characterized in that, The locking device (25) includes: The locking mechanism (251) is located on the back of the license plate mounting mechanism (22); Safety buckle (252) is provided on the side of fixed support (21); When the license plate mounting mechanism (22) is in a horizontal position, the locking mechanism (251) is engaged and fixed with the safety buckle (252).
7. The license plate flipping device as described in claim 2, characterized in that, It also includes a limiting clamp (26) located on the back of the license plate mounting mechanism (22); when in the vertical position, the limiting clamp (26) elastically clamps the pivot link (231) to prevent position displacement.
8. The license plate flipping device as described in claim 1, characterized in that, The license plate mounting mechanism (22) also includes a license plate fixing module, comprising: The license plate paddle (27) has a rotatable knob (272) and a linked paddle (271); Rotating the knob (272) drives the paddle (271) to abut against the edge of the license plate, preventing the license plate from coming out of the mounting slot (220).
9. The license plate flipping device as described in claim 1, characterized in that, It also includes at least one spring (28), which protrudes from the inner wall of the mounting groove (220); when the license plate is installed, the spring (28) provides elastic preload to suppress vibration and noise.
10. The license plate flipping device as described in claim 9, characterized in that, The spring (28) is a metal spring sheet, which is inclinedly set at the top of the mounting groove (220) to apply a downward pressing force to the license plate.
11. The license plate flipping device as described in claim 1, characterized in that, The pivoting trajectory of the flipping component (23) is mechanically constrained, and the angle between the lateral and vertical states is 90°.
12. The license plate flipping device as described in claim 8, characterized in that, The knob (272) drives the paddle (271) to move linearly through the threaded structure, thereby adjusting the tightness of the license plate.
13. A bicycle mounting bracket, characterized in that, include The main body of the fixing frame (10); and The license plate flipping device (20) as described in any one of claims 1 to 12, wherein the license plate flipping device (20) is disposed on the fixed frame body.