Portable quick locking structure

Abstract

The utility model belongs to the field of parking, and provides a convenient quick locking structure, which is used for realizing synchronous unlocking or braking of wheels at two ends of a connecting frame and comprises a first brake part, a second brake part and an unlocking part, and the first brake part and the second brake part are movably connected to two sides of the unlocking part respectively; the unlocking piece is installed on the connecting frame and can be freely switched between the unlocking position and the locking position of the connecting frame. Compared with the prior art, the utility model has the advantages that: through the position switching action of the unlocking piece, the synchronous braking or synchronous brake release operation of the two wheels can be quickly realized under the condition that the first braking piece and the second braking piece synchronously move, the overall structural design is compact, the operation process is simplified, the manufacturing and maintenance cost is reduced, and the working efficiency is improved. And the overall stability and the response efficiency of the structure can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of parking, specifically relating to a convenient quick-lock structure. Background Technology

[0002] Strollers have become an indispensable product in the growth of infants and young children. They are usually equipped with parking devices at the wheels to lock the wheels and park the stroller.

[0003] In existing parking devices, to facilitate user operation, the parking device is often installed near one of the wheels on the vehicle body. On the one hand, the internal structure of this parking device is relatively complex, which will affect both subsequent maintenance and replacement, as well as the overall service life of the parking device. On the other hand, this parking device usually brakes one of the rear wheels, or uses two sets of parking devices to achieve the parking function for different wheels. This makes it impossible for the current rear wheel folding models on the market to engage all the rear wheels for locking and unlocking parking in one action, which is not conducive to convenient operation for users, and also increases the manufacturing and maintenance costs of the entire vehicle. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a convenient quick-lock structure that is simple in structure, has good stability, and can achieve simultaneous unlocking and braking of both wheels.

[0005] The objective of this utility model can be achieved through the following technical solution: a convenient quick-lock structure is proposed for simultaneously unlocking or braking the wheels at both ends of the connecting frame, comprising a first brake component, a second brake component, and an unlocking component, wherein...

[0006] The first braking component and the second braking component are respectively movably connected to both sides of the unlocking component;

[0007] The unlocking component is installed on the connecting frame and can be freely switched between the unlocked and locked positions of the connecting frame;

[0008] When the unlocking component switches from the unlocked position to the locked position, the first brake component and the second brake component move synchronously relative to the unlocking component to restrict the rotation of the wheel; and when the unlocking component resets to the unlocked position, it drives the first brake component and the second brake component to simultaneously release the restriction on the wheel.

[0009] In the above-mentioned convenient quick-lock structure, the first braking component includes a first driving block, on which a forward guide portion is provided; the second braking component includes a second driving block, on which a reverse guide portion is provided, and the forward guide portion and the second reverse guide portion are respectively movably connected to both sides of the unlocking component.

[0010] In the aforementioned convenient quick-lock structure, the first brake and the second brake respectively move closer to or further away from the wheel located at different positions on the connecting frame.

[0011] In the aforementioned convenient quick-lock structure, both the forward guide and the reverse guide include a vertical guide groove and an oblique slide groove that are interconnected. The unlocking component is provided with a locking block, which is movably engaged in the vertical guide groove or the oblique slide groove.

[0012] In the aforementioned convenient quick-lock structure, a locking groove is formed at the top connection of the vertical guide groove and the oblique slide groove, and the engaging block is movably engaged in the locking groove to maintain the continuous release of the wheel restriction.

[0013] In the above-mentioned convenient quick-lock structure, both the first brake component and the second brake component further include a brake block and a locking block. Both the first drive block and the second drive block are connected to the brake block. The brake block movably abuts against the locking block, so that the locking block extends into the wheel hub along the wheel axis direction.

[0014] In the aforementioned convenient quick-lock structure, a mounting groove is formed inside the brake block, and a locking elastic element is connected between the inner wall of the mounting groove and the connecting frame.

[0015] In the aforementioned convenient quick-lock structure, the unlocking component includes:

[0016] The pressing block and the moving block are provided. The pressing block has latching parts on both sides, which are movably engaged with the inner wall of the connecting frame. The moving block is connected to the locking block on both sides. The connecting frame has a guide groove, and the moving block is movably disposed in the guide groove.

[0017] A reset elastic element is provided, and a connecting post is provided inside the pressing block. The reset elastic element is sleeved on the connecting post and connected to the moving block.

[0018] In the aforementioned convenient quick-lock structure, the elastic potential energy of the locking elastic element is greater than the elastic potential energy of the reset elastic element.

[0019] In the aforementioned convenient quick-lock structure, the second braking component further includes:

[0020] The first fixing block and the second fixing block are detachably connected within the connecting frame;

[0021] The fixed sleeve and its internal traction wire are disposed in the connecting frame. The two ends of the traction wire extend out of the fixed sleeve and are respectively connected to the brake block and the first drive block. The two ends of the fixed sleeve are respectively formed with a first engagement end and a second engagement end. The first engagement end is movably engaged in the first fixed block, and the second engagement end is movably engaged in the second fixed block to prevent the traction wire between the first engagement end and the second engagement end from bending.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The present invention provides a convenient quick-lock structure that ensures that the first brake and the second brake move synchronously, thereby quickly achieving synchronous braking or release of the two wheels. The overall structure is compact, which simplifies the operation process, reduces manufacturing and maintenance costs, and also helps to improve the overall stability and response efficiency of the structure.

[0024] (2) The locking groove and the locking block have a strong mechanical biting force through their matching structure. In addition, the elastic reset force of the reset elastic element on the pressing block and the moving block can effectively prevent the unlocking part from moving accidentally and causing accidental locking during vehicle use, thus ensuring the safety of vehicle use.

[0025] (3) By using the locking elastic element to provide a stronger locking force, when the unlocking element is switched to the unlocking position, the brake block can drive the locking block to extend into the wheel at the first time to realize the parking function. No additional operation is required to ensure that the vehicle is in a stable braking state, which improves the safety and reliability of use.

[0026] (4) By engaging the two joint ends with the two fixing blocks respectively, the traction wire between the two joint ends is fixed. That is, the traction wire in this part will not be bent or stretched when the wheel and the connecting frame are folded and stored, thus avoiding damage or even breakage of the traction wire due to local stress concentration, which would affect the normal braking and unlocking operation of the wheel. Attached Figure Description

[0027] Figure 1 This is a structural diagram of the application of this application in a children's stroller;

[0028] Figure 2 This is a schematic diagram of the installation structure when the unlocking component is in the unlocked position;

[0029] Figure 3 It is an exploded view of the connector, unlocking component, first drive block, and second drive block;

[0030] Figure 4 It is an exploded view of the connecting frame, pressing block, moving block and reset elastic element;

[0031] Figure 5 This is a schematic diagram of the installation structure between the wheel and the locking block;

[0032] Figure 6 This is a schematic diagram of the installation structure when the unlocking component is in the locked position;

[0033] Figure 7 This is a schematic diagram of the installation structure between the traction wire, the fixing block, and the connecting end.

[0034] In the diagram, 10 is the connecting frame; 100 is the guide groove; 101 is the limiting groove; 11 is the wheel; and 12 is the extension frame.

[0035] 2. First brake component; 20. First drive block; 200. Forward guide section; 200a. Vertical guide groove; 200b. Angled slide groove; 200c. Angled guide surface; 200d. Locking groove;

[0036] 3. Second brake component; 30. Second drive block; 300. Reverse guide part; 31. First fixing block; 32. Second fixing block; 33. Fixing sleeve; 330. First engaging end; 331. Second engaging end; 34. Traction wire; 35. Screw with washer;

[0037] 40. Brake block; 400. Mounting groove; 401. Locking elastic element; 41. Locking block; 42. Return spring;

[0038] 5. Unlocking component; 50. Locking block; 51. Pressing block; 510. Buckle part; 511. Connecting post; 52. Moving block; 53. Reset elastic component. Detailed Implementation

[0039] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0041] like Figure 1 As shown, this solution mainly describes a convenient quick-lock structure for use in children's vehicles. However, this convenient quick-lock structure is not limited to use in children's vehicles, but can also be applied to other places, such as tricycles in daily life.

[0042] like Figures 1 to 7 As shown, this utility model provides a convenient quick-lock structure for simultaneously unlocking or braking the wheels 11 at both ends of the connecting frame 10, including a first brake component 2, a second brake component 3, and an unlocking component 5.

[0043] The first brake component 2 and the second brake component 3 are movably connected to both sides of the unlocking component 5. The unlocking component 5 is mounted on the connecting frame 10 and can be freely switched between the unlocking position and the locking position of the connecting frame 10. When the unlocking component 5 is switched from the unlocking position to the locking position, the first brake component 2 and the second brake component 3 move synchronously relative to the unlocking component 5 to restrict the rotation of the wheel 11. When the unlocking component 5 is reset to the unlocking position, it drives the first brake component 2 and the second brake component 3 to release the restriction on the wheel 11 synchronously.

[0044] This embodiment primarily aims to enable the vehicle to stop or release parking (i.e., unlock the vehicle) multiple wheels 11 when not in use. Specifically, in this embodiment, the connecting frame 10 is equipped with two wheels 11 (which can be front and rear wheels, or, in this embodiment, the two rear wheels). The first brake component 2 is used to brake one side of the wheel 11, and the second brake component 3 brakes the other side of the wheel 11. The unlocking component 5, as a core control component, is mounted on the connecting frame 10 and can switch between an "unlocked position" and a "locked position." Furthermore, in the inactive state, the unlocking component 5 is in the "locked position" position. Figure 2 The unlocked position is shown. At this time, the first brake element 2 and the second brake element 3 are located away from the wheel 11, and no locking force is applied to the wheel 11. As the user squeezes the unlocking element 5, it... Figure 2 The unlock position shown is towards Figure 6 As the locking position moves as shown, during this process: due to the movement of the unlocking component 5, the first brake component 2 and the second brake component 3 move synchronously along their respective corresponding wheel 11 directions, eventually inserting into the wheel hub of the wheel 11, thereby restricting the rotation of the wheel 11 and ensuring the vehicle maintains the required stability when stored or folded. Similarly, when the unlocking component 5... Figure 6 The locking position shown has been moved to... Figure 2 When the unlocking position is shown, the first brake component 2 and the second brake component 3 simultaneously disengage from the wheel 11 for normal vehicle use. Thus, this structure, through the position switching action of the unlocking component 5, ensures that the first brake component 2 and the second brake component 3 move synchronously, quickly achieving synchronous braking or simultaneous release of the brakes on both wheels 11. The overall structure is compact, simplifying the operation process, reducing manufacturing and maintenance costs, and also contributing to improved overall stability and response efficiency.

[0045] Preferably, such as Figure 2 and Figure 6As shown, in this embodiment, the first brake component 2 and the second brake component 3 move closer to or further away from the wheels 11 at different positions on the connecting frame 10. Because of this, in this embodiment, when using one unlocking component 5, the two components (i.e., the first brake component 2 and the second brake component 3) can be linked to brake and unlock the wheels 11 at different positions respectively. This makes the structure not only suitable for the case of two rear wheels, but also adaptable to the case of simultaneous braking of the front and rear wheels in a four-wheeled vehicle. The overall structure is compact and saves space. It not only realizes the function of simultaneous braking of two wheels, but also improves the convenience of operation and the stability of braking.

[0046] The first brake component 2 includes a first drive block 20, on which a forward guide portion 200 is provided; the second brake component 3 includes a second drive block 30, on which a reverse guide portion 300 is provided, and the forward guide portion 200 and the second reverse guide portion 300 are respectively movably connected to both sides of the unlocking component 5.

[0047] Furthermore, such as Figure 2 and Figure 3 As shown, in order to enable the first brake element 2 and the second brake element 3 to move along their respective corresponding wheels 11, this embodiment uses a forward guide part 200 and a reverse guide part 300. It should be noted that the structures of the two are completely identical, only their installation directions are reversed. Thus, the unlocking element 5 is... Figure 2 The unlock position shown has been switched to Figure 6 During the locking process shown, the first drive block 20 and the second drive block 30 are simultaneously released due to the locking force of the unlocking member 5 on the forward guide 200 and the reverse guide 300. This allows the first drive block 20 to drive the end of the first brake member 2 to extend into the adjacent wheel 11, while the second drive block 30 also drives the end of the second brake member 3 to extend into the wheel 11 on the other side. Meanwhile, the unlocking member 5... Figure 6 The locking position shown has been switched to Figure 2 During the unlocking process, the movement of the unlocking component 5 will inevitably cause the first brake component 2 and the second brake component 3 to gradually move away from the corresponding wheel 11, meaning the brake components do not contact the wheel 11, allowing for normal rotation of the wheel 11. It is precisely the introduction of the forward guide 200 and the reverse guide 300 that enables precise synchronous control of the first brake component 2 and the second brake component 3, optimizing the braking trajectory and improving braking efficiency and safety.

[0048] Both the forward guide section 200 and the reverse guide section 300 include a vertical guide groove 200a and an oblique slide groove 200b that are interconnected. The unlocking component 5 is provided with a locking block 50, which is movably locked into the vertical guide groove 200a or the oblique slide groove 200b.

[0049] Furthermore, such as Figure 3 As shown, in this embodiment, both the forward guide portion 200 and the reverse guide portion 300 are composed of two parts: a vertical guide groove 200a and an oblique sliding groove 200b. The vertical guide groove 200a is arranged parallel to the unlocking and locking directions of the unlocking member 5. When the unlocking member 5 drives the locking block 50 along... Figure 2 When the vertical guide groove 200a moves, the locking block 50 releases the locking force on the first drive block 20 and the second drive block 30. Therefore, the first drive block 20 and the second drive block 30 move synchronously relative to the locking block 50 as it moves. That is, during the vertical movement of the locking block 50, Figure 3 The first drive block 20 and the second drive block 30 shown move relative to the engaging block 50 along the corresponding wheel 11 direction after synchronous unlocking (i.e., the first drive block 20 moves along...). Figure 3 Move to the right, the second drive block 30 along Figure 3 Move to the left), until the locking block 50 engages. Figure 6 The bottom end of the inclined slide groove 200b shown is sufficient. It should be noted that the inclined slide groove 200b in this embodiment has an inclined guide surface 200c. During the movement of the first driving block 20 and the second driving block 30 relative to the engaging block 50, the engaging block 50 gradually disengages from the vertical guide groove 200a and moves along the inclined direction of the inclined guide surface 200c to engage with the vertical guide groove 200a. Figure 6 Similarly, in the locked position shown, the unlocking component 5 drives the locking block 50 to reset to the position shown. Figure 2 When the position is shown, during the lifting of the unlocking component 5, the engaging block 50 can be driven to press against the inclined guide surface 200c, so that the first drive block 20 and the second drive block 30 complete the unlocking function along their respective directions away from the wheel 11. This embodiment achieves the required braking and unlocking functions with the same structure but using different installation methods (i.e., the orientations of the forward guide part 200 and the reverse guide part 300 are exactly opposite, see reference). Figure 3 This facilitates overall processing and manufacturing, while also aiding in subsequent maintenance and replacement operations, simplifying the operation process, and improving the adaptability and stability of the structure.

[0050] Preferably, such as Figure 2 and Figure 3 As shown, in this embodiment, a locking groove 200d is also formed at the top connection of the vertical guide groove 200a and the inclined slide groove 200b. When the user... Figure 6When the unlocking component 5 is subjected to an upward lifting force, the engaging block 50 moves along the inclined direction of the inclined guide surface 200c and finally engages in the locking groove 200d. It should be noted that the locking groove 200d has a certain locking force on the engaging groove to ensure the stability of the unlocking component 5 when it is in the unlocked position. This prevents the engaging block 50 from disengaging from the locking groove 200d due to vehicle vibration, thus avoiding the accidental locking of the wheel 11. This provides a guarantee for the smoothness and stability of normal use by the user when the vehicle is unlocked.

[0051] Both the first brake component 2 and the second brake component 3 also include a brake block 40 and a locking block 41. The first drive block 20 and the second drive block 30 are both connected to the brake block 40. The brake block 40 moves against the locking block 41, so that the locking block 41 extends into the hub of the wheel 11 along the axis of the wheel 11.

[0052] like Figure 3 and Figure 5 As shown, the first brake component 2 and the second brake component 3 in this embodiment also include a brake block 40 and a locking block 41. When the first drive block 20 and the second drive block 30 release the locking force due to the locking block 50 disengaging from the locking groove 200d, the first drive block 20 and the second drive block 30 can move synchronously relative to the connecting frame 10. Specifically (the actions of the first brake component 2 and the second brake component 3 in this embodiment are the same, and the explanation is based on the action of the first brake component 2. The braking and unlocking actions of the second brake component 3 are the same, and will not be described in detail here). Since an extension frame 12 is also movably installed between the connecting frame 10 and the wheel 11, so that the wheel 11 can be folded and stored when the connecting frame 10 rotates relative to the extension frame 12 (this structure can refer to the prior art, and will not be described in detail here), and the locking block 41 is movably disposed in the extension frame 12, as the second drive block 30 drives the brake block 40 along the extension frame 12, the wheel 11 is folded and stored. Figure 2 When the right wheel 11 moves in the indicated direction, the brake block 40 pushes the locking block 41 to move within the extension frame 12, thereby extending the locking block 41 into the wheel hub of the wheel 11. It should be noted that in this embodiment, the movement direction of the locking block 41 is always perpendicular to the radial direction of the wheel 11. The extension frame 12 guides and limits the movement of the locking block 41, ensuring smoothness and stability when the wheel 11 brakes and unlocks. Additionally, in this embodiment, a return spring 42 can be installed between the locking block 41 and the extension frame 12 to ensure that when the first drive block 20 and the second drive block 30 drive the brake block 40 to move away from the wheel 11, the locking block 41 can be pulled away from the wheel 11 by the elastic expansion force of the return spring 42, thus completing the unlocking function.

[0053] Preferably, in this embodiment, a limiting groove 101 is formed in the connecting frame 10. The first driving block 20 and the second driving block 30 are both movably engaged in the limiting groove 101. The limiting groove 101 guides and limits the movement of the driving blocks, ensuring that the first driving block 20 and the second driving block 30 smoothly drive the brake block 40 to push the locking block 41 to complete the braking or unlocking operation of the wheel 11.

[0054] like Figure 2 and Figure 3 As shown, in this embodiment, a mounting groove 400 is also formed within the brake block 40, and a locking elastic member 401 is connected between the inner wall of the mounting groove 400 and the connecting frame 10. When the unlocking member 5 drives the locking block 50 along... Figure 2 When the vertical guide groove 200a moves downward, since the elastic deformation force of the locking elastic element 401 is perpendicular to the moving direction of the locking block 50, the release of the elastic potential energy of the locking elastic element 401 pushes the brake block 40 together with the first drive block 20 along the direction of movement. Figure 3 As the wheel 11 moves to the right, the locking block 50, during its downward movement, adheres tightly to the inclined guide surface 200c due to the elastic release of the locking elastic element 401, until it engages. Figure 6 In the locked position shown, the brake block 40 has also pushed the locking block 41 to complete the braking function of the wheel 11. Therefore, the locking elastic member 401 can ensure that a firm mechanical lock is formed between the locking block 41 and the wheel hub, ensuring that the wheel 11 enters a stable parking state.

[0055] The unlocking component 5 includes: a pressing block 51 and a moving block 52. The pressing block 51 has latching portions 510 on both sides, which are movably latched onto the inner wall of the connecting frame 10. The moving block 52 has locking blocks 50 on both sides. The connecting frame 10 has a guide groove 100, and the moving block 52 is movably disposed in the guide groove 100. The reset elastic component 53 has a connecting post 511 in the pressing block 51, and the reset elastic component 53 is sleeved on the connecting post 511 and connected to the moving block 52.

[0056] like Figures 2 to 6As shown, the unlocking component 5 in this embodiment consists of three parts: a pressing block 51, a moving block 52, and a reset elastic element 53. When parking is required, the user presses down on the pressing block 51, causing the latch 510 to disengage from the inner wall of the connecting frame 10. As the pressing block 51 drives the moving block 52 to move synchronously down along the guide groove 100, the locking blocks 50 on both sides of the moving block 52 release the locking force during the downward movement. Under the elastic potential energy of the locking elastic element 401, the first driving block 20 and the second driving block 30 move until the brake block 40 pushes the locking block 41 into the wheel hub of the wheel 11. During this process, the reset elastic element 53 is gradually compressed, providing a buffer effect when the pressing block 51 drives the moving block 52 to move, reducing the user's operating force, improving the operating feel, and ensuring that the locking block 50 can smoothly disengage from the locking groove 200d. Similarly, when the user presses down on the locking block 51, the user can release the locking force during the downward movement of the moving block 52. Figure 6 When the movable block 52 is lifted, the engaging block 50 rises vertically and comes into close contact with the inclined guide surface 200c. This forces the first drive block 20 and the second drive block 30 to move their respective connected brake blocks 40 away from the locking block 41, ensuring that the locking block 41 disengages from the wheel 11 under the action of the return spring 42. During the process of the engaging block 50 re-engaging into the locking groove 200d, the composite elastic element, under the elastic expansion force, drives the latching part 510 to re-engage with the inner wall of the connecting frame 10. The design of the latching part 510 ensures that the pressing block 51 and the movable block 52 do not completely disengage from the connecting frame 10. At the same time, under the elastic potential energy of the return elastic element 53 (i.e., along the direction of the wheel 11), the locking block 50 is lifted vertically and comes into close contact with the inclined guide surface 200c. This forces the first drive block 20 and the second drive block 30 to move their respective connected brake blocks 40 away from the locking block 41, ensuring that the locking block 41 disengages from the wheel 11 under the action of the return spring 42. Figure 2 Under the vertical upward elastic reset force, the stability of the locking block 50 and the locking groove 200d when they are engaged is ensured, avoiding mis-locking caused by mechanical vibration or vehicle collision, thus providing a guarantee for the safety and stability of the vehicle during normal use and operation.

[0057] Preferably, in this embodiment, the elastic potential energy of the locking elastic element 401 is greater than that of the reset elastic element 53. That is, when the engaging block 50 on the moving block 52 disengages from the locking groove 200d, the elastic reset force of the locking elastic element 401 is much greater than that of the reset elastic element 53. Thus, the elastic reset force of the locking elastic element 401 can drive the brake block 40 to move the first drive block 20 and the second drive block 30 along their respective corresponding wheel 11 directions. This structure can quickly push the locking block 41 into the wheel 11 by the brake block 40 at the instant the engaging block 50 disengages from the locking groove 200d to complete the parking function, simplifying the operation process, improving parking efficiency, and greatly saving the user's valuable time.

[0058] The second brake component 3 further includes: a first fixing block 31 and a second fixing block 32, which are detachably connected to the connecting frame 10; a fixing sleeve 33 and its internal traction wire 34, which are disposed in the connecting frame 10, with both ends of the traction wire 34 extending out of the fixing sleeve 33 and respectively connected to the brake block 40 and the first drive block 20; the two ends of the fixing sleeve 33 are respectively formed with a first engagement end 330 and a second engagement end 331, with the first engagement end 330 movably engaged in the first fixing block 31 and the second engagement end 331 movably engaged in the second fixing block 32, to prevent the traction wire 34 between the first engagement end 330 and the second engagement end 331 from bending.

[0059] like Figure 2 and Figure 3 As shown, in this embodiment, the first drive block 20 and brake block 40 on the first brake component 2 are close to the wheel 11 and the aforementioned unlocking component 5. To save overall space, the first drive block 20 and the corresponding brake block 40 can be integrally manufactured. Alternatively, they can be detachably connected using screws or bolts. However, in this embodiment, the brake block 40 closest to the other wheel 11 and furthest from the unlocking component 5 is connected to its corresponding second drive block 30 via a traction wire 34. That is, during the movement of the first drive block 20 and the second drive block 30 relative to the locking block 50, the traction wire 34 pulls the corresponding brake block 40 away from the wheel 11, allowing the locking block 41 to disengage from the vehicle under the restoring elasticity. It is worth noting that this embodiment achieves detachable installation between the first fixing block 31 and the second fixing block 32 and the connecting frame 10 using screws or bolts. The engaging ends formed at both ends of the fixing sleeve 33 engage with the corresponding fixing blocks to ensure the first engaging end 330... The stability of the position of the first and second joint ends 331 on the connecting frame 10 is ensured. Furthermore, the traction wire 34 between the first and second joint ends 330 and 331 has sufficient elastic deformation capacity. In structures where the connecting frames 10 are folded closer to the vehicle body for storage, this structure ensures that the traction wire 34 connecting the two connecting frames 10 will not bend or stretch due to the folding action, preventing damage or even breakage of the traction wire 34 due to localized stress concentration, thus affecting the normal braking and unlocking operation of the wheels 11. The design between the joint ends and the fixing blocks is the same as the design of vehicle parking structures in the prior art (refer to the prior art structure), and will not be described in detail here. Preferably, in this embodiment, the first joint end 330 and the second joint end 331 are fixed to the first fixing block 31 and the second fixing block 32 respectively using washer screws 35 (refer to...). Figure 7 As shown), similarly, after the traction wire 34 in this embodiment is connected to the first drive block 20 and the second drive block 30, it can also be fixed using the washer screw 35 (see reference). Figure 7As shown in the figure, this ensures the stability of the connection between the two during repeated operations, preventing accidental detachment that could affect the smoothness of unlocking or parking.

[0060] It should be noted that the locking elastic element 401 and the reset elastic element 53 in this embodiment can be replaced by other elastic devices such as compression elasticity and reset elasticity.

[0061] It should be noted that in this invention, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0062] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0063] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A portable quick lock structure for realizing synchronous unlocking or stopping of wheels at both ends of a connecting frame, characterized in that, It includes a first brake component, a second brake component, and an unlocking component, among which, The first braking component and the second braking component are respectively movably connected to both sides of the unlocking component; The unlocking component is installed on the connecting frame and can be freely switched between the unlocked and locked positions of the connecting frame; When the unlocking component switches from the unlocked position to the locked position, the first brake component and the second brake component move synchronously relative to the unlocking component to restrict the rotation of the wheel; and when the unlocking component resets to the unlocked position, it drives the first brake component and the second brake component to simultaneously release the restriction on the wheel.

2. The quick lock structure of claim 1, wherein The first braking component includes a first driving block, on which a forward guiding portion is provided; the second braking component includes a second driving block, on which a reverse guiding portion is provided, and the forward guiding portion and the reverse guiding portion are respectively movably connected to both sides of the unlocking component.

3. The quick lock structure of claim 1, wherein The first brake component and the second brake component move closer to or further away from the wheel located at different positions on the connecting frame.

4. The quick lock structure of claim 2, wherein Both the forward guide and the reverse guide include a vertical guide groove and an oblique slide groove that are interconnected. The unlocking component is provided with a locking block, which is movably engaged in the vertical guide groove or the oblique slide groove.

5. The portable quick lock structure according to claim 4, wherein, A locking groove is formed at the top connection of the vertical guide groove and the inclined slide groove. The locking block is movably engaged in the locking groove to keep the wheel restriction continuously released.

6. The quick lock structure of claim 4, wherein Both the first brake component and the second brake component further include a brake block and a locking block. Both the first drive block and the second drive block are connected to the brake block. The brake block moves against the locking block, so that the locking block extends into the wheel hub along the wheel axis.

7. The portable quick lock structure according to claim 6, wherein, An installation groove is formed inside the brake block, and a locking elastic element is connected between the inner wall of the installation groove and the connecting frame.

8. The portable quick lock structure according to claim 7, wherein, The unlocking component includes: The pressing block and the moving block are provided. The pressing block has latching parts on both sides, which are movably engaged with the inner wall of the connecting frame. The moving block is connected to the locking block on both sides. The connecting frame has a guide groove, and the moving block is movably disposed in the guide groove. A reset elastic element is provided, and a connecting post is provided inside the pressing block. The reset elastic element is sleeved on the connecting post and connected to the moving block.

9. The portable quick lock structure according to claim 8, wherein, The elastic potential energy of the locking elastic element is greater than that of the reset elastic element.

10. The quick lock structure of claim 6, wherein, The second brake component also includes: The first fixing block and the second fixing block are detachably connected within the connecting frame; The fixed sleeve and its internal traction wire are disposed in the connecting frame. The two ends of the traction wire extend out of the fixed sleeve and are respectively connected to the brake block and the first drive block. The two ends of the fixed sleeve are respectively formed with a first engagement end and a second engagement end. The first engagement end is movably engaged in the first fixed block, and the second engagement end is movably engaged in the second fixed block to prevent the traction wire between the first engagement end and the second engagement end from bending.

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