A locking hook structure for a mobility scooter

Abstract

This utility model relates to the field of mobility scooter technology, and in particular to a locking hook structure for a mobility scooter. It includes a first and second linkage seat rotatably connected, a pull rod, a mounting post on the second linkage seat, a connecting part rotatably connected to the mounting post on the pull rod, a limiting device on the second linkage seat, a locking plate rotatably connected to the mounting post, a positioning mechanism on the first linkage seat, a limiting notch on the locking plate, and a hook on the connecting part. The limiting notch and the hook can respectively engage with the positioning mechanism. The locking plate and the connecting part are connected by a transmission device. The mounting post also has an elastic element connected to the connecting part and the second linkage seat. When the mobility scooter is fully unfolded, the portion of the connecting part above the mounting post is driven backward by the elastic element. This utility model solves the problem of insufficient locking and unlocking efficiency of traditional manual folding devices for mobility scooters during unfolding and folding.

Description

Technical Field

[0001] This utility model relates to the field of mobility scooter technology, and in particular to a locking hook structure for a mobility scooter. Background Technology

[0002] Nowadays, mobility scooters have become a popular mode of transportation, greatly facilitating the daily lives of people with mobility difficulties and the elderly, and effectively improving their quality of life.

[0003] Most mobility scooters on the market have a manual folding function. Their folding mechanism usually consists of a plate, a hook, and an elastic component. The unlocking and locking of the mobility scooter is achieved by the linkage between the plate, the hook, and the elastic component. However, the various components of this folding mechanism are prone to mutual interference, which affects the normal realization of the folding and unfolding function of the mobility scooter. Therefore, there is an urgent need for a mobility scooter with a manual folding mechanism that can lock and unlock more efficiently when unfolding and folding. Utility Model Content

[0004] To address the aforementioned issues, this invention proposes a locking hook structure for a mobility scooter, which solves the problem of insufficient locking and unlocking efficiency when the traditional manual folding device for mobility scooters is unfolded and folded.

[0005] The technical solution adopted by this utility model is: a locking hook structure for a mobility scooter, including a first linkage seat and a second linkage seat, which are rotatably connected. A seat assembly is provided on the second linkage seat, and a pull rod is also included. A connecting portion is provided at the end of the pull rod. A mounting post is provided on the second linkage seat, and the connecting portion is rotatably connected to the mounting post. A limiting device for restricting the rotation angle of the connecting portion is provided on the second linkage seat. A locking piece is also rotatably connected to the mounting post. A positioning mechanism is provided on the first linkage seat. A limiting notch is correspondingly provided on the locking piece, and a hook is correspondingly provided on the connecting portion. The limiting notch and the hook can respectively engage with the positioning mechanism. The locking piece and the connecting portion are connected via a transmission device. An elastic element is also provided on the mounting post, and the elastic element is connected to the connecting portion and the second linkage seat. When the first linkage seat and the second linkage seat are in a fully extended state, the portion of the connecting portion above the mounting post is subjected to a rearward driving force from the elastic element.

[0006] With the above technical solution, when the user unfolds the mobility scooter, rotating the lever causes the hook and positioning mechanism to disengage, releasing the scooter from its locked state. Then, the first and second linkage seats are driven to rotate relative to each other until they are unfolded to a suitable position, causing the limiting notch on the locking plate to engage with the positioning mechanism, thus locking the scooter in its unfolded state. This utility model achieves locking in both unfolded and folded states by engaging the limiting notch and hook with the positioning mechanism. The user only needs to pull the lever to rotate the connecting part, which drives the hook to disengage from the positioning mechanism, unlocking the first and second linkage seats in their folded state. Similarly, pulling the lever to rotate the connecting part, which, through a transmission device, rotates the locking plate, unlocking the limiting notch from the positioning mechanism, thus unlocking the first and second linkage seats in their unfolded state. This makes locking and unlocking the first and second linkage seats in their unfolded and folded states more efficient, effectively improving the user experience.

[0007] Furthermore, the transmission device includes a first connecting piece, a second connecting piece, and a third connecting piece. One end of the first connecting piece is rotatably connected to the connecting portion, and the other end of the first connecting piece is connected to one end of the third connecting piece. One end of the second connecting piece is rotatably connected to the locking piece. The limiting notch is located on both sides of the mounting post at the connection points of the second connecting piece and the locking piece. The other end of the second connecting piece is connected to the other end of the third connecting piece. A third positioning post is provided on the second linkage seat, and the third connecting piece is rotatably connected to the third positioning post.

[0008] With the above technical solution, when the mobility scooter is fully unfolded, the user can rotate the lever to move the part of the connecting section below the mounting post backward. The connecting section drives the first connecting piece to move backward, while the third connecting piece is rotatably connected to the third positioning post. The backward movement of the first connecting piece drives the end of the third connecting piece rotatably connected to the first connecting piece to move upward, causing the end of the second connecting piece rotatably connected to the third connecting piece to move downward, thereby pulling the second connecting piece downward. The end of the second connecting piece rotatably connected to the locking piece moves downward along with the second connecting piece. The locking piece is rotatably connected to the mounting post, causing the end of the locking piece with the limit notch to move upward until the limit notch and the positioning mechanism disengage, the lock in the unfolded state is released, and the user can fold and store the mobility scooter.

[0009] Furthermore, the limiting device includes a limiting post and a mounting hole. The limiting post is fixedly connected to the second linkage seat, and the mounting hole is located on the connecting part. The limiting post extends into the mounting hole, and the distance between the two ends of the mounting hole is greater than the diameter of the limiting post.

[0010] With the above technical solution, the distance between the two ends of the mounting hole is greater than the diameter of the limiting post, which allows the limiting post to move within the mounting hole in a limited way. This makes it convenient for users to adjust the angle of the pull rod within a certain range, while also preventing damage to the pull rod due to excessive rotation.

[0011] Furthermore, the positioning mechanism includes a first positioning post and a second positioning post; when the limiting notch is engaged with the first positioning post, the first linkage seat and the second linkage seat are in a fully extended state; when the hook is engaged with the second positioning post, the first linkage seat and the second linkage seat are in a fully folded state.

[0012] With the above technical solution, the user can rotate the lever to disengage the limiting notch from the first positioning post, thereby unlocking the fully unfolded mobility scooter and allowing it to be folded; or rotate the lever until the hook and the second positioning post disengage, thereby unlocking the fully folded mobility scooter and allowing it to be unfolded; thus facilitating the user's daily use of the mobility scooter.

[0013] Furthermore, the locking piece is generally arc-shaped, and one end of the locking piece is provided with a hook, which is connected to the limiting notch.

[0014] Through the above technical solution, the arc-shaped locking plate makes the connection between the limiting notch and the second connecting plate and the locking plate have a certain height difference relative to the center of rotation of the locking plate, thereby allowing the locking plate to have a larger travel when rotating on the mounting column, making it more convenient to use.

[0015] Furthermore, the connecting part includes a connecting section and a bent section that are connected to each other. The connecting section is fixedly connected to the pull rod, the bent section is rotatably connected to the mounting post, the first connecting piece is rotatably connected to the bent section, the mounting hole is located in the middle of the bent section, and the hook is located at the end of the bent section.

[0016] With the above technical solution, the connection between the connecting part and the pull rod is very stable. The mounting hole is located in the middle of the bending section, and the hook is located at the end of the bending section, so that the limiting post in the mounting hole will not affect the engagement of the hook and the second positioning post, thus ensuring the realization of the locking function of the connecting part. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the unfolded structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the unfolded portion of the present invention.

[0020] Figure 3 This is an enlarged view of section A of the schematic diagram of the unfolded part of this utility model;

[0021] Figure 4 This is a schematic diagram of the first linkage seat structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the second linkage seat structure of this utility model;

[0023] Figure 6 This is an exploded view of the unfolded portion of the structure of this utility model;

[0024] Figure 7 This is a schematic diagram of the tie rod structure of this utility model;

[0025] Figure 8 This is a schematic diagram of the folded structure of this utility model;

[0026] Figure 9 This is a schematic diagram of the folded portion of the present invention.

[0027] Figure 10 This is an enlarged view of section B in the structural schematic diagram of the folded portion of this utility model;

[0028] The utility model reference information is as follows:

[0029] 1. First linkage seat; 2. Second linkage seat; 3. Seat assembly; 4. Tie rod; 5. Connecting part; 6. Mounting post; 7. Locking piece; 8. Limiting notch; 9. Hook; 10. Elastic element; 11. First connecting piece; 12. Second connecting piece; 13. Third connecting piece; 14. Third positioning post; 15. Limiting post; 16. Mounting hole; 17. First positioning post; 18. Second positioning post; 19. Hook; 20. Front frame assembly; 21. Body assembly; 22. X-shaped link; 23. Connecting section; 24. Bending section;

[0030] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment 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 indicator will also change accordingly.

[0033] Furthermore, the use of terms such as "first" and "second" in this utility model 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. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0034] See Figures 1-10As shown, a locking hook structure for a mobility scooter includes a first linkage seat 1 and a second linkage seat 2, which are rotatably connected. A seat assembly 3 is provided on the second linkage seat 2. The scooter also includes a pull rod 4, with a connecting portion 5 at its end. A mounting post 6 is provided on the second linkage seat 2, and the connecting portion 5 is rotatably connected to the mounting post 6. A limiting device for restricting the rotation angle of the connecting portion 5 is provided on the second linkage seat 2. A locking piece 7 is also rotatably connected to the mounting post 6. A positioning mechanism is provided on the first linkage seat 1. A limiting notch 8 is provided on the locking piece 7, and a hook 9 is provided on the connecting portion 5. The limiting notch 8 and the hook 9 can respectively engage with the positioning mechanism. The locking piece 7 and the connecting portion 5 are connected via a transmission device. An elastic element 10 is also provided on the mounting post 6, and the elastic element 10 is connected to the connecting portion 5 and the second linkage seat 2. When the first linkage seat 1 and the second linkage seat 2 are in a fully extended state, the portion of the connecting portion 5 above the mounting post 6 is subjected to a rearward driving force from the elastic element 10. When the user unfolds the mobility scooter, rotating the lever 4 disengages the hook 9 from the positioning mechanism, releasing the scooter from its locked state. This then drives the first linkage seat 1 and the second linkage seat 2 to rotate relative to each other until they are unfolded to a suitable position. This causes the limiting notch 8 on the locking plate 7 to engage with the positioning mechanism, locking the scooter in its unfolded state. This invention achieves locking in both unfolded and folded states by engaging the limiting notch 8 and the hook 9 with the positioning mechanism. The user simply pulls the lever 4 to rotate the connecting part 5, which in turn drives the hook 9 to disengage from the positioning mechanism, unlocking the first linkage seat 1 and the second linkage seat 2 in their folded state. Similarly, pulling the lever 4 to rotate the connecting part 5, which in turn drives the locking plate 7 to rotate, unlocking the limiting notch 8 from the positioning mechanism, thus unlocking the first linkage seat 1 and the second linkage seat 2 in their unfolded state. This design improves the efficiency of locking and unlocking the first linkage seat 1 and the second linkage seat 2 in both unfolded and folded states, significantly enhancing the user experience.

[0035] The preferred elastic element 10 is a torsion spring.

[0036] See Figure 1 , 2As shown in Figures 3, 6, 8, 9, and 10, the transmission device includes a first connecting piece 11, a second connecting piece 12, and a third connecting piece 13. One end of the first connecting piece 11 is rotatably connected to the connecting part 5, and the other end of the first connecting piece 11 is connected to one end of the third connecting piece 13. One end of the second connecting piece 12 is rotatably connected to the locking piece 7. The limiting notch 8 is located on both sides of the mounting post 6 at the connection points of the second connecting piece 12 and the locking piece 7. The other end of the second connecting piece 12 is connected to the other end of the third connecting piece 13. A third positioning post 14 is provided on the second linkage seat 2, and the third connecting piece 13 is rotatably connected to the third positioning post 14. When the mobility scooter is fully unfolded, the user can rotate the lever 4 to move the part of the connecting part 5 below the mounting post 6 backward. The connecting part 5 drives the first connecting piece 11 to move backward, while the third connecting piece 13 is rotatably connected to the third positioning post 14. The backward movement of the first connecting piece 11 drives the third connecting piece 13 and the end rotatably connected to the first connecting piece 11 to move upward, causing the end rotatably connected to the second connecting piece 12 and the third connecting piece 13 to move downward, thereby pulling the second connecting piece 12 downward. The end rotatably connected to the second connecting piece 12 and the locking piece 7 moves downward together with the second connecting piece 12. The locking piece 7 is rotatably connected to the mounting post 6, causing the end of the locking piece 7 with the limit notch 8 to move upward until the limit notch 8 and the positioning mechanism disengage, the lock in the unfolded state is released, and the user can fold and store the mobility scooter.

[0037] See Figures 1-7 As shown, the limiting device includes a limiting post 15 and a mounting hole 16. The limiting post 15 is fixedly connected to the second linkage seat 2, and the mounting hole 16 is located on the connecting part 5. The limiting post 15 extends into the mounting hole 16, and the distance between the two ends of the mounting hole 16 is greater than the diameter of the limiting post 15. The greater distance between the two ends of the mounting hole 16 than the diameter of the limiting post 15 allows the limiting post 15 to move within the mounting hole 16, facilitating the user to adjust the tilt angle of the pull rod 4 within a certain range, while also preventing damage to the pull rod 4 due to excessive rotation.

[0038] See Figures 1-10 As shown, the positioning mechanism includes a first positioning post 17 and a second positioning post 18. When the limiting notch 8 is engaged with the first positioning post 17, the first linkage seat 1 and the second linkage seat 2 are in a fully extended state. When the hook 9 is engaged with the second positioning post 18, the first linkage seat 1 and the second linkage seat 2 are in a fully folded state. The user can rotate the lever 4 to disengage the limiting notch 8 from the first positioning post 17, thereby unlocking the fully extended mobility scooter and allowing it to fold; or rotate the lever 4 until the hook 9 and the second positioning post 18 disengage, thereby unlocking the fully folded mobility scooter and allowing it to unfold; this facilitates the user's daily use of the mobility scooter.

[0039] See Figure 6 As shown, the locking piece 7 is generally arc-shaped, with a hook 19 at one end, which connects to the limiting notch 8. The arc shape of the locking piece 7 creates a height difference between the connection point of the limiting notch 8 and the second connecting piece 12 and the locking piece 7 and the center of rotation of the locking piece 7, thus allowing the locking piece 7 to have a larger stroke when rotating on the mounting post 6, making it more convenient to use.

[0040] See Figures 1-7 As shown, the connecting part 5 includes a connecting section 23 and a bent section 24 that are connected to each other. The connecting section 23 is fixedly connected to the pull rod 4, and the bent section 24 is rotatably connected to the mounting post 6. The first connecting piece 11 is rotatably connected to the bent section 24. The mounting hole 16 is located in the middle of the bent section 24, and the hook 9 is located at the end of the bent section 24. The connection between the connecting part 5 and the pull rod 4 is very stable. The mounting hole 16 is located in the middle of the bent section 24, and the hook 9 is located at the end of the bent section 24, so that the limiting post 15 in the mounting hole 16 will not affect the engagement of the hook 9 and the second positioning post 18, thus ensuring the locking function of the connecting part 5.

[0041] The first linkage seat 1 is also rotatably connected to the front frame assembly 20, and the second linkage seat 2 is fixedly connected to the vehicle body assembly 21. The second linkage seat 2 is also rotatably connected to the X-shaped link 22, and the X-shaped link 22 is rotatably connected to the seat assembly 3.

[0042] When using this utility model, if the user needs to fold the mobility scooter, they can rotate the lever 4 to move the part of the connecting portion 5 below the mounting post 6 backward. The connecting portion 5 drives the first connecting piece 11 to move backward, while the third connecting piece 13 is rotatably connected to the third positioning post 14. The backward movement of the first connecting piece 11 drives the end of the third connecting piece 13 rotatably connected to the first connecting piece 11 to move upward, causing the end of the second connecting piece 12 rotatably connected to the third connecting piece 13 to move downward, thereby pulling the second connecting piece 12 downward. The end of the second connecting piece 12 rotatably connected to the locking piece 7 moves downward along with the second connecting piece 12. The locking piece 7 is rotatably connected to the mounting post 6, causing the end of the locking piece 7 with the limit notch 8 to move upward until it reaches the limit notch. When the first positioning post 17 and the hook 9 disengage, the lock in the unfolded state is released, allowing the mobility scooter to be folded and stored. When the user folds it to the appropriate position, the hook 9 and the second positioning post 18 engage, at which point the mobility scooter is fully folded and locked. Conversely, when the user needs to unfold the mobility scooter, the user rotates the lever 4, causing the hook 9 and the second positioning post 18 to disengage, releasing the mobility scooter from its locked state. Then, the user drives the first linkage seat 1 and the second linkage seat 2 to rotate relative to each other until the first linkage seat 1 and the second linkage seat 2 are unfolded to the appropriate position. This causes the first connecting piece 11, the second connecting piece 12, and the third connecting piece 13 to move relative to each other, causing the locking piece 7 to rotate on the mounting post 6 until the limiting notch 8 on the locking piece 7 engages with the positioning mechanism, and the mobility scooter is fully unfolded and locked in the unfolded state.

[0043] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A locking hook structure for a mobility scooter, comprising a first linkage seat (1) and a second linkage seat (2), the first linkage seat (1) and the second linkage seat (2) being rotatably connected, and a seat assembly (3) being disposed on the second linkage seat (2), characterized in that: It also includes a pull rod (4), the end of which is provided with a connecting part (5). A mounting post (6) is provided on the second linkage seat (2). The connecting part (5) is rotatably connected to the mounting post (6). A limiting device for limiting the rotation angle of the connecting part (5) is provided on the second linkage seat (2). A locking piece (7) is also rotatably connected to the mounting post (6). A positioning mechanism is provided on the first linkage seat (1). A limiting notch (8) is correspondingly provided on the locking piece (7). A hook (8) is correspondingly provided on the connecting part (5). 9) The limiting notch (8) and the hook (9) can be engaged with the positioning mechanism respectively. The locking piece (7) and the connecting part (5) are connected by a transmission device. The mounting post (6) is also provided with an elastic element (10). The elastic element (10) is connected to the connecting part (5) and the second linkage seat (2). When the first linkage seat (1) and the second linkage seat (2) are in a fully extended state, the part of the connecting part (5) above the mounting post (6) is driven backward by the elastic element (10).

2. The lock hook structure of a scooter according to claim 1, characterized in that: The transmission device includes a first connecting piece (11), a second connecting piece (12), and a third connecting piece (13). One end of the first connecting piece (11) is rotatably connected to the connecting part (5), and the other end of the first connecting piece (11) is connected to one end of the third connecting piece (13). One end of the second connecting piece (12) is rotatably connected to the locking piece (7). The connection points of the limiting notch (8) with the second connecting piece (12) and the locking piece (7) are located on both sides of the mounting post (6). The other end of the second connecting piece (12) is connected to the other end of the third connecting piece (13). A third positioning post (14) is provided on the second linkage seat (2), and the third connecting piece (13) is rotatably connected to the third positioning post (14).

3. The lock hook structure of a scooter according to claim 2, characterized in that: The limiting device includes a limiting post (15) and a mounting hole (16). The limiting post (15) is fixedly connected to the second linkage seat (2). The mounting hole (16) is located on the connecting part (5). The limiting post (15) extends into the mounting hole (16). The distance between the two ends of the mounting hole (16) is greater than the diameter of the limiting post (15).

4. The lock hook structure of a scooter according to claim 1 or 2 or 3, characterized in that: The positioning mechanism includes a first positioning post (17) and a second positioning post (18); when the limiting notch (8) is engaged with the first positioning post (17), the first linkage seat (1) and the second linkage seat (2) are in a fully extended state; when the hook (9) is engaged with the second positioning post (18), the first linkage seat (1) and the second linkage seat (2) are in a fully folded state.

5. The locking hook structure of a mobility scooter according to claim 4, characterized in that: The locking piece (7) is arc-shaped, and a hook (19) is provided at one end of the locking piece (7). The hook (19) is connected to the limiting notch (8).

6. The lock hook structure of a scooter according to claim 3, wherein: The connecting part (5) includes a connecting section (23) and a bent section (24) that are connected to each other. The connecting section (23) and the pull rod (4) are fixedly connected. The bent section (24) and the mounting post (6) are rotatably connected. The first connecting piece (11) is rotatably connected to the bent section (24). The mounting hole (16) is located in the middle of the bent section (24). The hook (9) is located at the end of the bent section (24).

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