A linkage folding scooter

Abstract

The utility model relates to a scooter technical field especially is linked to a kind of linkage folding scooter, including joystick assembly, electric drive device and folding seat subassembly, still including the front frame connecting seat and rear frame connecting seat of mutual rotation connection, joystick assembly is connected on the front frame connecting seat, folding seat subassembly includes the first support rod and second support rod of cross pivot connection, second support rod lower end rotationally connected on the rear frame connecting seat;Still including driven rod and limiting frame, limiting frame is fixed on the rear frame connecting seat, one end of driven rod is rotationally connected on the front frame connecting seat, the other end of driven rod is connected on the lower part of first support rod, the hinge point of driven rod and first support rod is always limited in the contour range of limiting frame internal space;The utility model proposes a kind of linkage folding scooter, solves the problem that traditional scooter folding deployment efficiency is not high enough.

Description

Technical Field

[0001] This utility model relates to the field of mobility scooter technology, and in particular to a folding mobility scooter with linkage. Background Technology

[0002] With the development of society, more and more attention is being paid to people with mobility impairments and the elderly. Appropriate outings can effectively improve their sense of happiness and quality of life. As a result, mobility scooters for people with mobility impairments and the elderly are becoming more and more popular in daily life.

[0003] A mobility scooter typically consists of a front frame assembly, a rear frame assembly, and a folding seat assembly. The front frame assembly includes a control lever assembly, which can be flipped and folded when the scooter is folded. When users need to fold the scooter, they must fold the front frame assembly, rear frame assembly, and folding seat assembly in a certain order, which is time-consuming and laborious. If the folding order is wrong, adjustments need to be made to ensure that the scooter can be fully folded. This is not user-friendly. There is an urgent need in the market for a mobility scooter that can be folded in one piece and has a higher folding and unfolding efficiency. Utility Model Content

[0004] To address the aforementioned issues, this invention proposes a linked folding mobility scooter, which solves the problem of insufficient folding and unfolding efficiency in traditional mobility scooters.

[0005] The technical solution adopted by this utility model is: a linkage folding mobility scooter, including a control lever assembly, an electric drive device, and a folding seat assembly, and further including a front frame connecting seat and a rear frame connecting seat that are rotatably connected to each other. The control lever assembly is connected to the front frame connecting seat. The folding seat assembly includes a first support rod and a second support rod that are pivotally connected to each other. The lower end of the second support rod is rotatably connected to the rear frame connecting seat. It also includes a driven rod and a limiting frame. The limiting frame is fixed to the rear frame connecting seat. One end of the driven rod is rotatably connected to the front frame connecting seat. The other end of the driven rod is connected to the lower part of the first support rod. The hinge point of the driven rod and the first support rod is always limited to the contour range of the internal space of the limiting frame.

[0006] With the above technical solution, when the user needs to fold the mobility scooter, the front frame connecting seat and the rear frame connecting seat are driven to rotate relative to each other. The rotating rear frame connecting seat drives the second support rod to rotate, and one end of the driven rod is rotatably connected to the front frame connecting seat, while the other end of the driven rod is connected to the lower part of the first support rod. This allows the rotating front frame connecting seat to drive the driven rod to rotate, and the rotating driven rod to drive the first support rod to move on the rear frame connecting seat, gradually increasing the distance between the lower ends of the first and second support rods. The first and second support rods are pivotally connected, allowing the folding seat assembly to fold under the action of the first and second support rods. When the front and rear frame connecting seats are folded, the folding seat assembly is stored and folded on the rear frame connecting seat. The hinge point of the driven rod and the first support rod is always limited to the outline range of the inner space of the limiting frame, so that the movement of the driven rod and the first support rod is restricted by the limiting frame, avoiding excessive movement of the first support rod on the rear frame connecting seat, and ensuring the normal functioning of the first and second support rods. Users only need to fold and unfold the front and rear frame connecting seats to drive the folding seat assembly to fold and unfold, which greatly improves the folding and unfolding efficiency of the commuter vehicle and effectively enhances the user experience.

[0007] Furthermore, the rear frame connecting seat is provided with a mounting base, and the mounting base is provided with a positioning groove for accommodating the lower end of the first support rod; when the front frame connecting seat and the rear frame connecting seat are in the fully extended state, the lower end of the first support rod is embedded in the positioning groove.

[0008] With the above technical solution, after the user fully unfolds the front frame connecting seat and the rear frame connecting seat, the lower end of the first support rod is engaged in the positioning groove, so that the first support rod is locked by the positioning groove, preventing the first support rod from moving on the rear frame connecting seat due to shaking or other situations during use, thus ensuring the overall stability of the mobility scooter.

[0009] Furthermore, the driven rod and the first support rod are located on both sides of the limiting frame.

[0010] With the above technical solution, the driven rod and the first support rod are located on both sides of the limiting frame, so that the driven rod and the first support rod are restricted by the limiting frame when they move, ensuring that the hinge point of the driven rod and the first support rod is always within the limiting frame, and preventing the hinge point of the driven rod and the first support rod from coming out of the limiting frame.

[0011] Furthermore, the lower end of the first support rod is provided with a protruding post, and the driven rod is provided with a corresponding connecting hole. The protruding post passes through the limiting frame and is rotatably connected to the connecting hole; or, the driven rod is provided with a protruding post, the lower end of the first support rod is provided with a corresponding connecting hole, and the protruding post passes through the limiting frame and is rotatably connected to the connecting hole.

[0012] Through the above technical solution, the protruding post passes through the limiting frame and rotates to connect with the connecting hole, making the connection between the driven rod and the first support rod very stable. The first support rod can use the protruding post to pass through the limiting frame to connect with the driven rod, making the assembly of the driven rod and the first support rod more convenient.

[0013] Furthermore, a first gasket, a second gasket, and a bushing are provided on the protruding post, and the first gasket, the bushing, and the second gasket are arranged sequentially on the protruding post.

[0014] The above technical solution, with the first washer, bushing and second washer arranged sequentially on the protruding post, reduces the friction generated when the driven rod and the first support rod rotate relative to each other, and makes the rotation of the driven rod on the protruding post smoother.

[0015] Furthermore, a locking assembly is provided at the connection between the rear frame connecting seat and the front frame connecting seat. A pull rod is rotatably connected to the rear frame connecting seat, and a connecting part is provided at the end of the pull rod. The locking assembly includes a locking plate, a first positioning post, and a second positioning post. A mounting post is provided on the rear frame connecting seat. The connecting part and the locking plate are both rotatably connected to the mounting post. The mounting post is also provided with a first elastic element, which is connected to the connecting part and the rear frame connecting seat. The first positioning post and the second positioning post are both located on the front frame connecting seat. A pawl is provided at the end of the connecting part, and a hook is provided at the end of the locking plate. The connecting part and the locking plate are jointly connected to a transmission mechanism. When the hook is engaged with the first positioning post, the front frame connecting seat and the rear frame connecting seat are in a fully extended state, and the portion of the connecting part above the mounting post is driven backward by the first elastic element. When the pawl is engaged with the second positioning post, the front frame connecting seat and the rear frame connecting seat are in a fully folded state.

[0016] With the above technical solution, when the user manually unfolds the mobility scooter, they first rotate the lever to disengage the hook and the second positioning pin, thereby releasing the scooter's locked state. Then, they drive the front and rear frame connecting seats to rotate relative to each other until they are unfolded to a suitable position, causing the hook on the locking plate to engage with the first positioning pin, thus locking the scooter in its unfolded state. This invention achieves locking in the unfolded state through the engagement of the hook and the first positioning pin, and locks the scooter in its folded state through the engagement of the hook and the second positioning pin. The locking mechanism allows the user to unlock the front and rear frame connecting seats in their folded state by simply pulling the lever to rotate the connecting part, which in turn drives the hook to disengage from the second positioning post. Alternatively, pulling the lever to rotate the connecting part, which in turn drives the locking plate to rotate via the transmission mechanism, unlocking the hook and the first positioning post. This allows the front and rear frame connecting seats to be unlocked in their unfolded state. This design makes locking and unlocking the front and rear frame connecting seats more efficient in both unfolded and folded states, effectively improving the user experience.

[0017] Furthermore, the rear frame connecting seat is also provided with a limiting post, and the connecting part is provided with a mounting hole for the limiting post to extend into, the distance between the two ends of the mounting hole being greater than the diameter of the limiting post.

[0018] 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.

[0019] Furthermore, the joystick assembly includes a driven seat, and the rear frame connecting seat and the driven seat are rotatably connected to a transmission rod. The driven seat and the front frame connecting seat are rotatably connected. When the front frame connecting seat and the rear frame connecting seat are folded relative to each other, the transmission rod drives the driven seat to flip onto the front frame connecting seat. When the front frame connecting seat and the rear frame connecting seat are in a fully extended state, the height of the connection between the driven seat and the front frame connecting seat is greater than the height of the connection between the transmission rod and the driven seat, and the distance between the connection between the transmission rod and the driven seat and the connection between the front frame connecting seat and the rear frame connecting seat is less than the distance between the connection between the transmission rod and the driven seat and the connection between the transmission rod and the rear frame connecting seat.

[0020] With the above technical solution, when the mobility scooter is in the unfolded state, the height of the connection between the driven seat and the front frame connecting seat is greater than the height of the connection between the transmission rod and the driven seat, allowing the control lever assembly to be smoothly folded onto the front frame connecting seat. The driven seat and the front frame connecting seat will not obstruct rotation. The distance between the connection between the transmission rod and the driven seat and the connection between the front frame connecting seat and the rear frame connecting seat is less than the distance between the connection between the transmission rod and the driven seat and the connection between the transmission rod and the rear frame connecting seat, ensuring that the rotation of the transmission rod on the rear frame connecting seat will not affect the rotation of the front frame connecting seat and the rear frame connecting seat. It also ensures that the rotation direction of the driven seat on the transmission rod is consistent with the rotation direction of the driven seat on the front frame connecting seat.

[0021] Furthermore, the folding seat assembly also includes a seat and a backrest, the upper end of the second support rod is rotatably connected to the backrest, a telescopic rod is provided at the bottom of the seat, the telescopic rod is rotatably connected to the second support rod, and the upper end of the first support rod is rotatably connected to the seat.

[0022] Through the above technical solution, the telescopic rod at the bottom of the seat and the second support rod are rotatably connected, the upper end of the first support rod is rotatably connected to the seat, and the first support rod and the second support rod are pivotally connected. When the seat is folded on the rear frame connecting seat, the telescopic rod extends outward to ensure that the seat can be folded smoothly. The upper end of the second support rod is rotatably connected to the backrest, so that the backrest can be folded on the seat. The volume of the mobility scooter is further reduced after folding, which is beneficial for users to move and transport the mobility scooter.

[0023] Furthermore, the chair seat has a mounting part on its side, and a support armrest is rotatably connected to the mounting part. The support armrest includes a mounting groove, and a pressing block is provided between the mounting groove and the mounting part. An arc-shaped hole is provided on the side wall of the mounting groove, and the pressing block extends out of the arc-shaped hole. The pressing block and the mounting part are slidably connected. The mounting part has a mounting protrusion, and the pressing block and the mounting protrusion abut against a second elastic element. A limiting notch is provided on the inner wall of the mounting groove, and there are at least two limiting notches. A positioning protrusion is provided on the pressing block, and the positioning protrusion can engage with the limiting notch. The positioning protrusion is always located within the mounting groove. When the positioning protrusion engages with the limiting notch, the support armrest and the mounting part are relatively locked. When the positioning protrusion and the limiting notch are completely separated, the support armrest and the mounting part can rotate relative to each other.

[0024] With the above technical solution, when the user needs to adjust the relative angle between the support armrest and the seat, they can drive the pressing block, causing the pressing block to compress the second elastic element against the mounting protrusion. The positioning protrusion slides on the mounting part until the positioning protrusion and the limiting notch on the pressing block are completely separated, releasing the lock between the support armrest and the mounting part. The user can then rotate the support armrest on the mounting part. After the support armrest is rotated a certain angle, the positioning protrusion on the pressing block can align with the limiting notch in the mounting groove. At this point, the user can remove the driving force applied to the pressing block, causing the second elastic element to spring back to its original position. The pressing block then... Pushed by the component, it returns to its initial position and causes the positioning protrusion to slide on the mounting part, allowing the positioning protrusion to engage within the limiting notch, thereby locking the support armrest and the mounting part, and keeping their relative positions fixed. The user only needs to press the pressing block to the appropriate position to release the locking state of the support armrest and the mounting part. After rotating the support armrest to a certain angle, the user can release the pressing block, causing it to return to its initial position, while the positioning protrusion engages within the limiting notch, locking the support armrest and the mounting part. This makes it very convenient and quick for the user to adjust the angle of the support armrest on the seat. Attached Figure Description

[0025] 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.

[0026] Figure 1 This is a schematic diagram of the unfolded structure of this utility model; Figure 2 This is one of the schematic diagrams of the unfolded part of this utility model; Figure 3 This is the second schematic diagram of the unfolded part of the present invention; Figure 4 This is an enlarged view of point A in the second schematic diagram of the unfolded structure of this utility model; Figure 5 This is a schematic diagram of the rear frame connecting seat structure of this utility model; Figure 6 This is one of the partial structural schematic diagrams of this utility model; Figure 7 This is a schematic diagram of the tie rod structure of this utility model; Figure 8 This is a schematic diagram of the folded structure of this utility model; Figure 9This is a schematic diagram of the folded portion of the present invention. Figure 10 This is an enlarged view of section B in the structural schematic diagram of the folded portion of this utility model; Figure 11 This is a second schematic diagram of a partial structure of this utility model; Figure 12 For the present utility model Figure 11 Exploded view; Figure 13 This is a schematic diagram of the chair seat structure of this utility model; Figure 14 This is an enlarged view of section C in the schematic diagram of the chair seat structure of this utility model; Figure 15 This is a schematic diagram of the pressing block structure of this utility model; Figure 16 This is one of the schematic diagrams of the supporting handrail structure of this utility model; Figure 17 This is the second schematic diagram of the supporting handrail structure of this utility model; The utility model reference information is as follows: 1. Front frame connecting seat; 2. Rear frame connecting seat; 3. First support rod; 4. Second support rod; 5. Driven rod; 6. Limit frame; 7. Mounting seat; 8. Positioning groove; 9. Protruding post; 10. Connecting hole; 11. First gasket; 12. Second gasket; 13. Bushing; 14. Tie rod; 15. Connecting part; 16. Locking piece; 17. First positioning post; 18. Second positioning post; 19. Mounting post; 20. First elastic element; 21. Claw; 22. Hook; 3. Limiting post; 24. Mounting hole; 25. Driven seat; 26. Transmission rod; 27. Seat; 28. Backrest; 29. ​​Telescopic rod; 30. Mounting part; 31. Support armrest; 32. Mounting groove; 33. Pressing block; 34. Arc-shaped hole; 35. Mounting protrusion; 36. Second elastic element; 37. Limiting notch; 38. Positioning protrusion; 39. Grip rod; 40. First connecting piece; 41. Second connecting piece; 42. Third connecting piece; 43. Third positioning post; 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

[0027] 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.

[0028] 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.

[0029] 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.

[0030] See Figures 1-17As shown, a linkage folding mobility scooter includes a joystick assembly, an electric drive device, and a folding seat assembly. It also includes a front frame connecting seat 1 and a rear frame connecting seat 2 rotatably connected to each other. The joystick assembly is connected to the front frame connecting seat 1. The folding seat assembly includes a first support rod 3 and a second support rod 4 that are pivotally connected. The lower end of the second support rod 4 is rotatably connected to the rear frame connecting seat 2. It also includes a driven rod 5 and a limiting frame 6. The limiting frame 6 is fixed to the rear frame connecting seat 2. One end of the driven rod 5 is rotatably connected to the front frame connecting seat 1, and the other end of the driven rod 5 is connected to the lower part of the first support rod 3. The hinge point between the driven rod 5 and the first support rod 3 is always confined within the contour range of the internal space of the limiting frame 6. When the user needs to fold the mobility scooter, the front frame connecting seat 1 and the rear frame connecting seat 2 are driven to rotate relative to each other. The rotating rear frame connecting seat 2 drives the second support rod 4 to rotate. One end of the driven rod 5 is rotatably connected to the front frame connecting seat 1, and the other end of the driven rod 5 is connected to the lower part of the first support rod 3. This allows the rotating front frame connecting seat 1 to drive the driven rod 5 to rotate. The rotating driven rod 5 can drive the first support rod 3 to move on the rear frame connecting seat 2, gradually increasing the distance between the lower ends of the first support rod 3 and the lower ends of the second support rod 4. The first support rod 3 and the second support rod 4 are pivotally connected, allowing the folding seat assembly to fold onto the rear frame connecting seat under the action of the first support rod 3 and the second support rod 4. When the front frame connecting seat 1 and the rear frame connecting seat 2 are folded, the folding seat assembly is stored and folded on the rear frame connecting seat 2. The hinge point of the driven rod 5 and the first support rod 3 is always limited to the outline of the inner space of the limiting frame 6, so that the movement of the driven rod 5 and the first support rod 3 is restricted by the limiting frame 6, avoiding excessive movement of the first support rod 3 on the rear frame connecting seat 2, and ensuring the normal functioning of the first support rod 3 and the second support rod 4. The user only needs to fold and unfold the front frame connecting seat 1 and the rear frame connecting seat 2 to drive the folding seat assembly to fold and unfold, which greatly improves the folding and unfolding efficiency of the commuter vehicle and effectively enhances the user experience.

[0031] The electric drive unit includes a built-in power supply, a drive motor, and a control switch. The built-in power supply, drive motor, and control switch are all electrically connected. The drive motor is used to drive the wheels on the rear frame connecting seat 2 to rotate, thereby providing power for the movement of the mobility scooter. The built-in power supply, drive motor, and control switch are all common technologies on the market and will not be described in detail here.

[0032] See Figures 1-5As shown, a mounting base 7 is provided on the rear frame connecting seat 2, and a positioning groove 8 is provided on the mounting base 7 to accommodate the lower end of the first support rod 3. When the front frame connecting seat 1 and the rear frame connecting seat 2 are in the fully extended state, the lower end of the first support rod 3 is engaged in the positioning groove 8. After the user fully extends the front frame connecting seat 1 and the rear frame connecting seat 2, the lower end of the first support rod 3 is engaged in the positioning groove 8, so that the first support rod 3 is locked by the positioning groove 8, preventing the first support rod 3 from moving on the rear frame connecting seat 2 due to shaking or other reasons during use, thus ensuring the overall stability of the mobility scooter.

[0033] See Figures 1-5 As shown, the driven rod 5 and the first support rod 3 are located on both sides of the limiting frame 6. The fact that the driven rod 5 and the first support rod 3 are located on both sides of the limiting frame 6 means that the driven rod 5 and the first support rod 3 are restricted by the limiting frame 6 during movement, ensuring that the hinge point of the driven rod 5 and the first support rod 3 is always within the limiting frame 6, and preventing the hinge point of the driven rod 5 and the first support rod 3 from coming out of the limiting frame 6.

[0034] See Figures 1-6 As shown, the lower end of the first support rod 3 is provided with a protruding post 9, and the driven rod 5 is correspondingly provided with a connecting hole 10. The protruding post 9 passes through the limiting frame 6 and is rotatably connected to the connecting hole 10; or, the driven rod 5 is provided with a protruding post 9, and the lower end of the first support rod 3 is correspondingly provided with a connecting hole 10. The protruding post 9 passes through the limiting frame 6 and is rotatably connected to the connecting hole 10, making the connection between the driven rod 5 and the first support rod 3 very stable. The first support rod 3 can be connected to the driven rod 5 by using the protruding post 9 passing through the limiting frame 6, making the assembly of the driven rod 5 and the first support rod 3 more convenient.

[0035] The present invention preferably has a protruding post 9 at the lower end of the first support rod 3, and a corresponding connecting hole 10 is provided on the driven rod 5. The protruding post 9 passes through the limiting frame 6 and is rotatably connected to the connecting hole 10.

[0036] See Figure 6 As shown, a first washer 11, a second washer 12, and a bushing 13 are provided on the protruding post 9. The first washer 11, bushing 13, and second washer 12 are arranged sequentially on the protruding post 9. The first washer 11, bushing 13, and second washer 12 arranged sequentially on the protruding post 9 reduce the friction generated when the driven rod 5 and the first support rod 3 rotate relative to each other, and make the rotation of the driven rod 5 on the protruding post 9 smoother.

[0037] See Figures 1-10As shown, a locking assembly is provided at the connection between the rear frame connecting seat 2 and the front frame connecting seat 1. A pull rod 14 is rotatably connected to the rear frame connecting seat 2, and a connecting part 15 is provided at the end of the pull rod 14. The locking assembly includes a locking piece 16, a first positioning post 17, and a second positioning post 18. A mounting post 19 is provided on the rear frame connecting seat 2. The connecting part 15 and the locking piece 16 are both rotatably connected to the mounting post 19. The mounting post 19 is also provided with a first elastic element 20, which is connected to the connecting part 15 and the rear frame connecting seat 2. The first positioning post 17 and the second positioning post 18 are... The positioning posts 18 are all located on the front frame connecting seat 1. The end of the connecting part 15 is provided with a claw 21, and the end of the locking plate 16 is provided with a hook 22. The connecting part 15 and the locking plate 16 are connected to the transmission mechanism. When the hook 22 is engaged with the first positioning post 17, the front frame connecting seat 1 and the rear frame connecting seat 2 are in a fully extended state. The part of the connecting part 15 above the mounting post 19 is driven backward by the first elastic member 20. When the claw 21 is engaged with the second positioning post 18, the front frame connecting seat 1 and the rear frame connecting seat 2 are in a fully folded state. When manually unfolding the mobility scooter, the user first rotates the lever 14 to disengage the hook 21 and the second positioning post 18, thereby releasing the scooter's locked state. Then, the user drives the front frame connecting seat 1 and the rear frame connecting seat 2 to rotate relative to each other until they are unfolded to a suitable position, causing the hook 22 on the locking plate 16 to engage with the first positioning post 17, locking the scooter in the unfolded state. This utility model's mobility scooter achieves locking in the unfolded state through the engagement of the hook 22 and the first positioning post 17, and locking in the folded state through the engagement of the hook 21 and the second positioning post 18. Simply pulling the lever 14 to rotate the connecting part 15 will drive the hook 21, causing the hook 21 and the second positioning post 18 to disengage, thus unlocking the front frame connecting seat 1 and the rear frame connecting seat 2 in their relatively folded state. The user only needs to pull the lever 14 to rotate the connecting part 15, which will drive the locking piece 16 to rotate through the transmission mechanism, thus unlocking the hook 22 and the first positioning post 17, thus unlocking the front frame connecting seat 1 and the rear frame connecting seat 2 in their relatively unfolded state. This makes the locking or unlocking actions of the front frame connecting seat 1 and the rear frame connecting seat 2 in their unfolded and folded states more efficient, effectively improving the user experience.

[0038] The first elastic element 20 is preferably a torsion spring.

[0039] The transmission mechanism includes a first connecting piece 40, a second connecting piece 41, and a third connecting piece 42. One end of the first connecting piece 40 is rotatably connected to the connecting portion 15, and the other end of the first connecting piece 40 is connected to one end of the third connecting piece 42. One end of the second connecting piece 41 is rotatably connected to the locking piece 16. The connection points of the hook 22 with the second connecting piece 41 and the locking piece 16 are located on both sides of the mounting post 19, and the other end of the second connecting piece 41 is connected to the other end of the third connecting piece 42. A third positioning post 43 is provided on the rear frame connecting seat 2, and the third connecting piece 42 is rotatably connected to the third positioning post 43. When the mobility scooter is in the fully extended state, the user can rotate the lever 14 to move the portion of the connecting portion 15 located below the mounting post 19 backward. The connecting part 15 drives the first connecting piece 40 to move backward, while the third connecting piece 42 is rotatably connected to the third positioning post 43. The backward movement of the first connecting piece 40 drives the third connecting piece 42 and the end rotatably connected to the first connecting piece 40 to move upward, causing the end rotatably connected to the second connecting piece 41 and the third connecting piece 42 to move downward, thereby pulling the second connecting piece 41 downward. The end rotatably connected to the second connecting piece 41 and the locking piece 16 moves downward together with the second connecting piece 41. The locking piece 16 is rotatably connected to the mounting post 19, causing the end of the locking piece 16 with the hook 22 to move upward until the hook 22 and the first positioning post 17 disengage, the lock in the unfolded state is released, and the user can fold and store the mobility scooter.

[0040] See Figures 1-7 As shown, the rear frame connecting seat 2 is also provided with a limiting post 23, and the connecting part 15 is provided with a mounting hole 24 for the limiting post 23 to extend into. The distance between the two ends of the mounting hole 24 is greater than the diameter of the limiting post 23. The distance between the two ends of the mounting hole 24 is greater than the diameter of the limiting post 23, which allows the limiting post 23 to move within the mounting hole 24 in a limited way. This makes it convenient for the user to adjust the tilt angle of the pull rod 14 within a certain range, and also avoids damage to the pull rod 14 due to excessive rotation.

[0041] See Figures 1-4As shown, the joystick assembly includes a driven seat 25, a rear frame connecting seat 2, and a transmission rod 26 rotatably connected to the driven seat 25. The driven seat 25 and the front frame connecting seat 1 are rotatably connected. When the front frame connecting seat 1 and the rear frame connecting seat 2 are folded relative to each other, the transmission rod 26 drives the driven seat 25 to flip onto the front frame connecting seat 1. When the front frame connecting seat 1 and the rear frame connecting seat 2 are in the fully extended state, the height of the connection between the driven seat 25 and the front frame connecting seat 1 is greater than the height of the connection between the transmission rod 26 and the driven seat 25, and the distance between the connection between the transmission rod 26 and the driven seat 25 and the connection between the front frame connecting seat 1 and the rear frame connecting seat 2 is less than the distance between the connection between the transmission rod 26 and the driven seat 25 and the connection between the transmission rod 26 and the rear frame connecting seat 2. When the mobility scooter is in the unfolded state, the height of the connection between the driven seat 25 and the front frame connecting seat 1 is greater than the height of the connection between the transmission rod 26 and the driven seat 25, allowing the control lever assembly to be smoothly folded onto the front frame connecting seat 1. The driven seat 25 and the front frame connecting seat 1 do not obstruct rotation. The distance between the connection between the transmission rod 26 and the driven seat 25 and the connection between the front frame connecting seat 1 and the rear frame connecting seat 2 is less than the distance between the connection between the transmission rod 26 and the driven seat 25 and the connection between the transmission rod 26 and the rear frame connecting seat 2, ensuring that the rotation of the transmission rod 26 on the rear frame connecting seat 2 does not affect the rotation of the front frame connecting seat 1 and the rear frame connecting seat 2. This also ensures that the rotation direction of the driven seat 25 on the transmission rod 26 is consistent with the rotation direction of the driven seat 25 on the front frame connecting seat 1.

[0042] The joystick assembly of this utility model also includes a gripping lever 39, which is fixedly connected to the driven seat 25.

[0043] See Figures 1-3 As shown, the folding seat assembly also includes a seat 27 and a backrest 28. The upper end of the second support rod 4 is rotatably connected to the backrest 28. A telescopic rod 29 is provided at the bottom of the seat 27, which is rotatably connected to the second support rod 4. The upper end of the first support rod 3 is rotatably connected to the seat 27. The telescopic rod 29 at the bottom of the seat 27 is rotatably connected to the second support rod 4, and the upper end of the first support rod 3 is rotatably connected to the seat 27. The first support rod 3 and the second support rod 4 are pivotally connected. When the seat 27 is folded onto the rear frame connecting seat 2, the telescopic rod 29 extends outward to ensure that the seat 27 can be folded smoothly onto the rear frame connecting seat 2. The upper end of the second support rod 4 is rotatably connected to the backrest 28, allowing the backrest 28 to be folded on the seat 27. The volume of the mobility scooter is further reduced after folding, which is beneficial for users to move and transport the mobility scooter.

[0044] See Figures 11-17As shown, a mounting part 30 is provided on the side of the seat 27. The mounting part 30 is rotatably connected to a support armrest 31. The support armrest 31 includes a mounting groove 32. A pressing block 33 is provided between the mounting groove 32 and the mounting part 30. An arc-shaped hole 34 is provided on the side wall of the mounting groove 32. The pressing block 33 extends out of the arc-shaped hole 34. The pressing block 33 and the mounting part 30 are slidably connected. A mounting protrusion 35 is provided on the mounting part 30. The pressing block 33 and the mounting protrusion 35 abut against a second elastic member 3. 6. The inner wall of the mounting groove 32 is provided with a limiting notch 37, and there are at least two limiting notches 37. The pressing block 33 is provided with a positioning protrusion 38, which can engage with the limiting notch 37. The positioning protrusion 38 is always located in the mounting groove 32. When the positioning protrusion 38 and the limiting notch 37 are engaged, the support armrest 31 and the mounting part 30 are locked relative to each other. When the positioning protrusion 38 and the limiting notch 37 are completely separated, the support armrest 31 and the mounting part 30 can rotate relative to each other. When the user needs to adjust the relative angle between the support armrest 31 and the seat, they can drive the pressing block 33, causing the pressing block 33 to compress the second elastic element 36 against the mounting protrusion 35. The positioning protrusion 38 slides on the mounting part 30 until the positioning protrusion 38 and the limiting notch 37 on the pressing block 33 are completely separated, releasing the lock between the support armrest 31 and the mounting part 30. The user can then rotate the support armrest 31 on the mounting part 30. After the support armrest 31 is rotated a certain angle, the positioning protrusion 38 on the pressing block 33 can align with the limiting notch 37 in the mounting groove 32. At this point, the user can remove the driving force applied to the pressing block 33, causing the second elastic element 36 to spring back to its original position. The pressing block 33 then retracts the second elastic element 36. Pushed by the lever, the armrest 31 returns to its initial position, causing the positioning protrusion 38 to slide on the mounting part 30. This allows the positioning protrusion 38 to engage within the limiting notch 37, thereby locking the armrest 31 and the mounting part 30 and maintaining their relative positions. The user only needs to press the pressing block 33 to the appropriate position to release the locking state of the armrest 31 and the mounting part 30. After rotating the armrest 31 to a certain angle, the user can release the pressing block 33, causing it to return to its initial position. At the same time, the positioning protrusion 38 engages within the limiting notch 37, locking the armrest 31 and the mounting part 30. This makes it very convenient and quick for the user to adjust the angle of the armrest 31 on the seat.

[0045] The second elastic element 36 is preferably a spring.

[0046] The preferred limiting notch 37 has three on the inner wall of the mounting groove 32.

[0047] When using this invention, if the user needs to manually fold the mobility scooter, first rotate the pull rod 14 to disengage the hook 22 from the first positioning post 17, thereby releasing the scooter from its locked state. Then, drive the front frame connecting seat 1 and the rear frame connecting seat 2 to rotate relative to each other. The rotating rear frame connecting seat 2 drives the second support rod 4 to rotate, and the rotating front frame connecting seat 1 drives the driven rod 5 to rotate. The rotating driven rod 5 drives the first support rod 3 to move on the rear frame connecting seat 2, gradually increasing the distance between the lower ends of the first support rod 3 and the second support rod 4. The first support rod 3 and the second support rod 4 are pivotally connected, causing the folding seat assembly to fold onto the rear frame connecting seat 2 under the action of the first support rod 3 and the second support rod 4. The driven seat 25 moves backward under the action of the front frame connecting seat 1 and the rear frame connecting seat 2. The front frame connecting seat 1 flips over, allowing the control lever assembly to fold onto the front frame connecting seat 1. When the front frame connecting seat 1 and the rear frame connecting seat 2 are in the folded state, the folding seat assembly is folded onto the rear frame connecting seat 2, and the control lever assembly is folded onto the front frame connecting seat 1, causing the hook 21 and the second positioning post 18 to engage, locking the folded mobility scooter. When the user manually unfolds the mobility scooter, they first rotate the lever 14 to disengage the hook 21 and the second positioning post 18, thereby releasing the locked state of the mobility scooter. Then, they drive the front frame connecting seat 1 and the rear frame connecting seat 2 to rotate relative to each other until the front frame connecting seat 1 and the rear frame connecting seat 2 are unfolded to a suitable position, causing the hook 22 on the locking plate 16 to engage with the first positioning post 17, locking the unfolded mobility scooter.

[0048] 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 linked folding mobility scooter, comprising a joystick assembly, an electric drive unit, and a folding seat assembly, characterized in that: It also includes a front frame connecting seat (1) and a rear frame connecting seat (2) that are rotatably connected to each other. The control lever assembly is connected to the front frame connecting seat (1). The folding seat assembly includes a first support rod (3) and a second support rod (4) that are pivotally connected. The lower end of the second support rod (4) is rotatably connected to the rear frame connecting seat (2). It also includes a driven rod (5) and a limiting frame (6). The limiting frame (6) is fixed to the rear frame connecting seat (2). One end of the driven rod (5) is rotatably connected to the front frame connecting seat (1). The other end of the driven rod (5) is connected to the lower part of the first support rod (3). The hinge point of the driven rod (5) and the first support rod (3) is always limited to the outline range of the internal space of the limiting frame (6).

2. The linked folding mobility scooter according to claim 1, characterized in that: The rear frame connecting seat (2) is provided with a mounting seat (7), and the mounting seat (7) is provided with a positioning groove (8) for accommodating the lower end of the first support rod (3); when the front frame connecting seat (1) and the rear frame connecting seat (2) are in a fully extended state, the lower end of the first support rod (3) is embedded in the positioning groove (8).

3. The linked folding mobility scooter according to claim 2, characterized in that: The driven rod (5) and the first support rod (3) are located on both sides of the limiting frame (6).

4. The linked folding mobility scooter according to claim 3, characterized in that: The first support rod (3) has a protruding post (9) at its lower end, and the driven rod (5) has a corresponding connecting hole (10). The protruding post (9) passes through the limiting frame (6) and is rotatably connected to the connecting hole (10); or, the driven rod (5) has a protruding post (9), and the first support rod (3) has a corresponding connecting hole (10). The protruding post (9) passes through the limiting frame (6) and is rotatably connected to the connecting hole (10).

5. A folding mobility scooter according to claim 4, characterized in that: The protruding post (9) is provided with a first gasket (11), a second gasket (12) and a bushing (13), and the first gasket (11), the bushing (13) and the second gasket (12) are arranged sequentially on the protruding post (9).

6. The linked folding mobility scooter according to claim 5, characterized in that: A locking assembly is provided at the connection between the rear frame connecting seat (2) and the front frame connecting seat (1). A pull rod (14) is rotatably connected to the rear frame connecting seat (2). A connecting part (15) is provided at the end of the pull rod (14). The locking assembly includes a locking piece (16), a first positioning post (17), and a second positioning post (18). A mounting post (19) is provided on the rear frame connecting seat (2). The connecting part (15) and the locking piece (16) are both rotatably connected to the mounting post (19). The mounting post (19) is also provided with a first elastic element (20). The first elastic element (20) is connected to the connecting part (15) and the rear frame connecting seat (2). The first positioning post (17) and the second positioning post (18) are rotatably connected to the connecting part (15) and the front frame connecting seat (18). The columns (18) are all located on the front frame connecting seat (1). The end of the connecting part (15) is provided with a hook (21), and the end of the locking piece (16) is provided with a hook (22). The connecting part (15) and the locking piece (16) are connected to a transmission mechanism. When the hook (22) is engaged on the first positioning column (17), the front frame connecting seat (1) and the rear frame connecting seat (2) are in a fully unfolded state. The part of the connecting part (15) above the mounting column (19) is driven backward by the first elastic element (20). When the hook (21) is engaged on the second positioning column (18), the front frame connecting seat (1) and the rear frame connecting seat (2) are in a fully folded state.

7. A folding mobility scooter according to claim 6, characterized in that: The rear frame connecting seat (2) is also provided with a limiting post (23), and the connecting part (15) is provided with a mounting hole (24) for the limiting post (23) to extend into. The distance between the two ends of the mounting hole (24) is greater than the diameter of the limiting post (23).

8. A folding mobility scooter according to claim 7, characterized in that: The joystick assembly includes a driven seat (25), and the rear frame connecting seat (2) and the driven seat (25) are rotatably connected to a transmission rod (26). The driven seat (25) and the front frame connecting seat (1) are rotatably connected. When the front frame connecting seat (1) and the rear frame connecting seat (2) are folded relative to each other, the transmission rod (26) drives the driven seat (25) to flip onto the front frame connecting seat (1). When the front frame connecting seat (1) and the rear frame connecting seat (2) are fully extended... In this state, the height of the connection between the driven seat (25) and the front frame connecting seat (1) is greater than the height of the connection between the transmission rod (26) and the driven seat (25), and the distance between the connection between the transmission rod (26) and the driven seat (25) and the connection between the front frame connecting seat (1) and the rear frame connecting seat (2) is less than the distance between the connection between the transmission rod (26) and the driven seat (25) and the connection between the transmission rod (26) and the rear frame connecting seat (2).

9. A folding mobility scooter according to claim 8, characterized in that: The folding seat assembly also includes a seat (27) and a backrest (28). The upper end of the second support rod (4) is rotatably connected to the backrest (28). A telescopic rod (29) is provided at the bottom of the seat (27). The telescopic rod (29) is rotatably connected to the second support rod (4). The upper end of the first support rod (3) is rotatably connected to the seat (27).

10. A folding mobility scooter according to claim 9, characterized in that: The seat (27) has a mounting part (30) on its side, and the mounting part (30) is rotatably connected to a support armrest (31). The support armrest (31) includes a mounting groove (32), and a pressing block (33) is provided between the mounting groove (32) and the mounting part (30). An arc-shaped hole (34) is provided on the side wall of the mounting groove (32), and the pressing block (33) partially extends out of the arc-shaped hole (34). The pressing block (33) and the mounting part (30) are slidably connected. The mounting part (30) is provided with a mounting protrusion (35), and the pressing block (33) and the mounting protrusion (35) abut against a second elastic element (36). The inner wall of the mounting groove (32) is provided with a limiting notch (37), and the number of limiting notches (37) is at least two. The pressing block (33) is provided with a positioning protrusion (38), which can engage with the limiting notch (37). The positioning protrusion (38) is always located in the mounting groove (32). When the positioning protrusion (38) and the limiting notch (37) are engaged, the support armrest (31) and the mounting part (30) are locked relative to each other. When the positioning protrusion (38) and the limiting notch (37) are completely separated, the support armrest (31) and the mounting part (30) can rotate relative to each other.

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