A scooter

Abstract

The application relates to the scooter technical field, in particular to a scooter, which comprises a chassis, a seat, a seat support frame, a quick-release connecting frame and a folding seat; wherein the seat support frame is arranged on the top of the chassis, the quick-release connecting frame is arranged on the upper end of the seat support frame, the quick-release connecting frame is provided with a locking piece and a containing space in the longitudinal direction from front to back, the bottom of the seat is provided with a limiting piece and a positioning piece in the longitudinal direction from front to back, the positioning piece can move in the longitudinal direction to extend into the containing space, after the positioning piece extends into the containing space, the locking piece abuts against the limiting piece to prevent the positioning piece from separating from the containing space, the top of the chassis is provided with a storage groove behind the seat support frame, and the folding seat can be folded and stored in the storage groove; the scooter provided by the application does not need to lift the seat to a high distance when the seat is installed and dismounted, the folding seat can be unfolded to provide a riding position for friends when two people need to ride, and the scooter is convenient for the daily use of the old and the disabled.

Description

Technical Field

[0001] This invention relates to the field of mobility scooter technology, and in particular to a mobility scooter. Background Technology

[0002] Mobility scooters primarily meet the needs of the aging population and the trend towards green environmental protection, and have become another emerging industry within the traditional wheelchair industry. Furthermore, with the development of social welfare and the improvement of people's living standards, more and more people with disabilities are using mobility scooters. As a result, mobility scooters have become an indispensable means of transportation for people with lower limb disabilities and the elderly and frail. Mobility scooters save caregivers from the burden of care, facilitate transfers within hospitals, and can also be used for shopping, picking up children, etc., making them an excellent means of transportation for people with disabilities and the elderly.

[0003] Chinese patent application number 202010988345.8 discloses a mobility scooter, which includes a chassis, a seat, and a quick-release structure. The quick-release structure includes a guide post and a mounting rod. The guide post is set on the chassis and has a mounting cavity inside. The mounting rod is set at the bottom of the seat and is detachably inserted into the mounting cavity. The chassis and the seat are connected by the quick-release structure, which allows for quick assembly and disassembly of the seat and chassis. However, this method requires repeated adjustments to the seat position to align the guide post and the mounting rod, resulting in low assembly efficiency. Furthermore, disassembly requires raising the seat a considerable distance to separate it from the quick-release structure, making both installation and disassembly of the seat laborious and unsuitable for use by disabled people and the elderly.

[0004] Chinese patent application number 201320551681.1 also discloses an electric mobility scooter with a single / double adjustable seat, which includes a chassis, an electrical control box, and a steering control lever. The chassis is connected to a support rod through a surface-mounted receiving groove. A fixing buckle is provided between the support rod and the empty groove. A first seat is installed on top of the support rod. A bracket is provided on top of the electrical control box, and a second seat is installed on top of the bracket. This mobility scooter adopts a single / double adjustable seat design, which also provides a seating position for relatives and friends, making it convenient for two people to ride. However, the secondary seat of this type of mobility scooter is inconvenient to store after being removed, and the secondary seat is relatively large, making it difficult for disabled people and the elderly to install and remove the secondary seat. Summary of the Invention

[0005] To overcome the shortcomings mentioned above, the present invention aims to provide a technical solution that can solve the above problems.

[0006] A personal mobility vehicle includes a chassis, a seat, a seat support frame, a quick-release connecting frame, and a folding seat. The seat support frame is located on the top of the chassis, and the quick-release connecting frame is located at the upper end of the seat support frame. The quick-release connecting frame has a locking element and a receiving space arranged longitudinally. The bottom of the seat has a limiting element and a positioning element arranged longitudinally. The positioning element can move longitudinally to extend into the receiving space. After the positioning element extends into the receiving space, the locking element abuts against the limiting element to prevent the positioning element from disengaging from the receiving space. The top of the chassis has a storage groove located behind the seat support frame, and the folding seat can be folded and stored in the storage groove.

[0007] As a further aspect of the present invention: the positioning component includes a first L-shaped plate, the horizontal plate of the first L-shaped plate is connected to the seat, the vertical plate of the first L-shaped plate is provided with a positioning pin, the quick-release connecting frame is formed by four side frames, the edges of the side frames extend inward with a stop, and the stop and the side frame restrict an accommodating space. When the first L-shaped plate moves longitudinally to a certain position, the positioning pin extends into the accommodating space. The quick-release connecting frame is symmetrically provided with side baffles on the left and right sides, and the horizontal plate of the first L-shaped plate is provided with chamfers on the left and right sides.

[0008] As a further aspect of the present invention: the limiting member includes a second L-shaped plate, the horizontal plate of the second L-shaped plate is connected to the seat, the locking member includes a mounting plate, the mounting plate is horizontally arranged on the quick-release connecting frame, the bottom of the mounting plate is provided with a hinge seat, a latch is rotatably connected to the hinge seat via a rotating shaft, a torsion spring is sleeved on the rotating shaft, one end of the torsion spring is connected to the hinge seat, and the other end of the torsion spring is connected to the latch. After the positioning pin extends into the accommodating space, under the action of the torsion spring, the latch abuts against the vertical plate of the second L-shaped plate. The bottom of the latch is provided with an unlocking rod, the front end of the quick-release connecting frame is provided with a through groove, and the end of the unlocking rod extends out from the through groove and is connected to an unlocking handle.

[0009] As a further aspect of the present invention: a number of limiting holes are provided on the vertical plate of the second L-shaped plate, and a number of limiting pins are provided on the bottom of the mounting plate. The number of limiting pins is the same as the number of limiting holes. When the second L-shaped plate moves to a certain position along the longitudinal direction of the quick-release connecting frame, each limiting pin is inserted into each limiting hole.

[0010] As a further embodiment of the present invention: the folding seat includes an outer frame, the beginning of which is rotatably connected to the inner wall of the storage groove. A first groove is provided on the outer frame along its length direction. An inner frame is slidably disposed in the first groove. The inner frame can extend or retract along the first groove. A support plate is rotatably connected to the end of the outer frame. When the inner frame extends from the first groove, the support plate flips outward relative to the outer frame. A second groove is provided on the inner frame along its length direction. A handrail is slidably disposed in the second groove. The end of the inner frame extends out of the first groove and is rotatably connected to a stool. The handrail can extend or retract along the second groove. When the handrail extends from the second groove, the stool flips outward relative to the inner frame.

[0011] As a further aspect of the present invention: the folding seat further includes a first tension spring, one end of which is connected to the inner wall of the first sliding groove, and the other end of which is connected to the inner wall of the second sliding groove. First mounting posts are provided on symmetrical sides of the outer frame, and first sleeves are provided on symmetrical sides of the support plate. The first sleeves are fitted onto the first mounting posts. Several first protruding teeth are provided along the circumferential direction of the outer periphery of the first sleeve. First waist-shaped holes are also provided on symmetrical sides of the outer frame. First sliding pillars are provided on symmetrical sides of the inner frame. The first sliding pillars pass through the first waist-shaped holes and are connected to a meshing member. An extension plate extending towards the first sleeve is formed on the meshing member. Several second protruding teeth for meshing with the first protruding teeth are formed on the extension plate. An arc-shaped groove is formed on the side of the meshing member facing the first sleeve, and locking teeth are formed on the inner wall of the arc-shaped groove.

[0012] As a further embodiment of the present invention: the folding seat also includes a second tension spring, the tension of the second tension spring being greater than that of the first tension spring. One end of the second tension spring is connected to the inner wall of the second slide groove, and the other end of the second tension spring is connected to the armrest. A second waist-shaped hole is provided on two symmetrical sides of the inner frame. A second sliding post is provided on the armrest for sliding engagement with the second waist-shaped hole. A second sleeve is fitted on the second sliding post, and a first transmission rod is connected to the second sleeve. A second mounting post is provided on two opposite sides of the second slide groove. A third sleeve is fitted on the second mounting post, and a second transmission rod is connected to the third sleeve. The first transmission rod and the second transmission rod are hinged together. A plurality of third protruding teeth are formed on the outer side of the third sleeve along its circumference. A third mounting post is provided on two opposite sides of the second slide groove and above the second mounting post. A fourth sleeve is fitted on the third mounting post. A fourth protruding tooth is formed on the outer side of the fourth sleeve that meshes with the third protruding tooth. A flip plate extending out of the second slide groove is connected to the fourth sleeve. The stool is set on the flip plate, and a support rod is rotatably connected to the inner side of the stool.

[0013] As a further aspect of the present invention: a rubber sleeve is provided around the outer periphery of the stool board. The rubber sleeve includes a first ring, a second ring, a third ring, and a retaining ring. The first ring is fitted around the outer periphery of the stool board. The upper part of the first ring is connected to the lower part of the second ring, and a first crease is provided at the connection between the first ring and the second ring. The upper part of the second ring is connected to the lower part of the third ring, and a second crease is provided at the connection between the second ring and the third ring. The upper part of the third ring is connected to the retaining ring.

[0014] As a further embodiment of the present invention: the folding seat also includes a folding seat support frame, the folding seat support frame is provided with a slider, a third sliding groove is provided on the support plate along its length direction, the slider is slidably disposed in the third sliding groove, an mounting block is provided on the inner side of the support plate, a support spring is connected to the mounting block and the beginning end of the folding seat support frame, a support wheel is provided at the end of the folding seat support frame, a first mounting seat is provided on the folding seat support frame, a first pushing spring is provided in the first mounting seat, a locking block is provided on the first pushing spring, and a locking groove for cooperating with the locking block is provided on the support plate.

[0015] As a further aspect of the present invention: a second mounting seat is provided on the inner frame near its beginning, a second push spring is provided in the second mounting seat, a first stop is provided on the second push spring, and a first groove is provided on the first stop for the end edge of the outer frame to be inserted; a third mounting seat is provided on the support frame near its beginning, a third push spring is provided in the third mounting seat, a second stop is provided on the third push spring, and a second groove is provided on the second stop for the end edge of the inner frame to be inserted.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention, through the setting of quick-release connecting frame, limiting component, locking component and snap-fit ​​component, allows the installation and removal of the seat to be completed simply by moving the seat longitudinally, making the installation and removal of the seat smoother, more convenient and less strenuous. When installing and removing the seat, it is not necessary to raise the seat a great distance, which is convenient for people with disabilities with leg defects and elderly people with unsteady walking.

[0018] 2. The present invention features a folding seat. When two people need to sit, the folding seat can be unfolded to provide a seating position for relatives and friends. When a single person is sitting, it can be folded and stored in the storage slot, making it convenient for the elderly and disabled to use in daily life.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the seat portion of the present invention.

[0023] Figure 3 This is a schematic diagram of the quick-release connecting bracket part of the present invention.

[0024] Figure 4 This is a schematic diagram of the locking mechanism of the present invention.

[0025] Figure 5 This is a partial cross-sectional view of the quick-release connector of the present invention.

[0026] Figure 6 yes Figure 5 A magnified view of part A.

[0027] Figure 7 This is a schematic diagram of the storage slot portion of the present invention.

[0028] Figure 8 This is a schematic diagram of the folding seat of the present invention in its unfolded state.

[0029] Figure 9 This is a schematic diagram of the outer frame portion of the present invention.

[0030] Figure 10 yes Figure 9 A magnified view of section B.

[0031] Figure 11 This is a schematic diagram of the handrail structure of the present invention.

[0032] Figure 12 This is a schematic diagram of the flipping frame structure of the present invention.

[0033] Figure 13 This is a schematic diagram of the first ring portion of the present invention.

[0034] Figure 14 This is a schematic diagram of the folding seat support frame of the present invention.

[0035] Figure 15 This is a schematic diagram of the supporting spring part of the present invention.

[0036] Figure 16 This is a schematic diagram of the card block structure of the present invention.

[0037] Figure 17 This is a schematic diagram of the structure of the first stop block part of the present invention.

[0038] In the picture:

[0039] 1. Chassis; 2. Seat; 3. Seat support frame; 4. Quick-release connecting frame; 5. Folding seat; 6. Locking device; 7. Accommodation space; 8. Positioning device; 9. Limiting device; 11. Storage slot; 41. Side frame; 42. Edge guard; 43. Side panel; 44. Through slot; 51. Outer frame; 52. Inner frame; 53. Support plate; 54. Armrest; 55. Stool; 56. First tension spring; 57. Second tension spring; 58. Folding seat support frame; 511. First slide groove; 512. First mounting post; 513. 521. First oblong hole; 522. Second sliding groove; 523. First sliding column; 524. Gear engagement piece; 525. Extension plate; 526. Second convex tooth; 527. Arc-shaped groove; 528. Clamping tooth; 529. Second mounting column; 5210. Third sleeve; 5211. Second transmission rod; 5212. Third convex tooth; 5213. Third mounting column; 5214. Fourth sleeve; 5215. Fourth convex tooth; 5216. Flip plate; 5217. Second mounting base; 5218. Second... Push spring, 5219, First stop block, 5220, First groove, 531, First sleeve, 532, First tooth, 533, Third slide groove, 534, Mounting block, 535, Slot, 541, Second slide column, 542, Second sleeve, 543, First transmission rod, 544, Third mounting base, 545, Third push spring, 546, Second stop block, 547, Second groove, 551, Support rod, 552, Rubber sleeve, 553, First collar, 554, Second collar, 555, ... Three rings, 556. Sleeve ring, 557. First crease, 558. Second crease, 581. Slider, 582. Support spring, 583. First mounting base, 584. First push spring, 585. Locking block, 586. Support wheel, 61. Mounting plate, 62. Hinge seat, 63. Rotating shaft, 64. Lock, 65. Torsion spring, 66. Unlocking rod, 67. Unlocking handle, 68. Limiting pin, 81. First L-shaped plate, 82. Positioning pin, 83. Chamfer, 91. Second L-shaped plate, 92. Limiting hole. Detailed Implementation

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figures 1-17 In this embodiment of the invention, a mobility scooter includes a chassis 1, a seat 2, a seat support frame 3, a quick-release connecting frame 4, and a folding seat 5. The seat support frame 3 is located on the top of the chassis 1, and the quick-release connecting frame 4 is located on the upper end of the seat support frame 3. The quick-release connecting frame 4 is provided with a locking member 6 and a receiving space 7 along the longitudinal direction. The bottom of the seat 2 is provided with a limiting member 9 and a positioning member 8 along the longitudinal direction. The positioning member 8 can move longitudinally to extend into the receiving space 7. After the positioning member 8 extends into the receiving space 7, the locking member 6 abuts against the limiting member 9 to prevent the positioning member 8 from disengaging from the receiving space 7. The top of the chassis 1 is provided with a storage groove 11 behind the seat support frame 3, and the folding seat 5 can be folded and stored in the storage groove 11.

[0042] With the quick-release connecting bracket 4, locking piece 6, accommodating space 7, limiting piece 9, and positioning piece 8, during the installation of seat 2, seat 2 is placed on quick-release connecting bracket 4, and then pushed backward to move seat 2 so that positioning piece 8 extends into accommodating space 7. Locking piece 6 then holds against limiting piece 9, thus completing the installation of seat 2. During disassembly, locking piece 6 is unlocked, and seat 2 is pushed forward to disengage positioning piece 8 from accommodating space 7, thus completing the disassembly of seat 2. In this way, the installation and disassembly of seat 2 can be completed simply by moving seat 2 longitudinally, making the installation and disassembly of seat 2 smoother, more convenient, and less strenuous. When installing and disassembling seat 2, it is not necessary to raise seat 2 a high distance, making it convenient for people with leg defects and elderly people with unsteady gait to use. Furthermore, with the folding seat 5, when two people need to sit, the folding seat 5 can be unfolded to provide a seating position for relatives and friends. When a single person is sitting, it can be folded and stored in storage slot 11, making it convenient for daily use by the elderly and disabled.

[0043] The positioning component 8 includes a first L-shaped plate 81, the horizontal plate of the first L-shaped plate 81 is connected to the seat 2, and the vertical plate of the first L-shaped plate 81 is provided with a positioning pin 82. The quick-release connecting frame 4 is formed by four side frames 41. The edge of the side frame 41 extends inward with a stop 42. The stop 42 and the side frame 41 restrict the accommodating space 7. When the first L-shaped plate 81 moves longitudinally to a certain position, the positioning pin 82 extends into the accommodating space 7. The quick-release connecting frame 4 is symmetrically provided with side baffles 43 on the left and right sides. The horizontal plate of the first L-shaped plate 81 is provided with chamfers 83 on the left and right sides. Understandably, the accommodating space 7 is located near the rear end of the quick-release connecting frame 4, and the first L-shaped plate 81 is located at the bottom rear end of the seat 2. During installation, when the seat 2 is pushed backward, the first L-shaped plate 81 is moved to a position near the rear end of the quick-release connecting frame 4. At this point, the positioning pin 82 on the vertical plate of the first L-shaped plate 81 extends into the accommodating space 7, thereby restricting the seat 2 from moving up or down. When the seat 2 is pushed, the two side baffles 43 can restrict the horizontal plate of the first L-shaped plate 81 to prevent it from shifting during movement. After the seat 2 is installed, the two side baffles 43 can also restrict the seat 2 from moving to the left or right. The chamfer 83 can serve as a guide, making it easier to push the horizontal plate of the first L-shaped plate 81 between the two side baffles 43.

[0044] The limiting member 9 includes a second L-shaped plate 91, the horizontal plate of the second L-shaped plate 91 is connected to the seat 2, and the locking member 6 includes a mounting plate 61, the mounting plate 61 is horizontally arranged on the quick-release connecting frame 4, the bottom of the mounting plate 61 is provided with a hinge seat 62, the hinge seat 62 is rotatably connected to a buckle 64 through a rotating shaft 63, the rotating shaft 63 is fitted with a torsion spring 65, one end of the torsion spring 65 is connected to the hinge seat 62, and the other end of the torsion spring 65 is connected to the buckle 64. After the positioning pin 82 is inserted into the accommodating space 7, under the action of the torsion spring 65, the buckle 64 abuts against the vertical plate of the second L-shaped plate 91. The bottom of the buckle 64 is provided with an unlocking rod 66, the front end of the quick-release connecting frame 4 is provided with a through groove 44, and the end of the unlocking rod 66 extends out from the through groove 44 and is connected to an unlocking handle 67. Understandably, the mounting plate 61 is located near the front end of the quick-release connecting bracket 4. After the positioning pin 82 extends into the accommodating space 7, the latch 64 abuts against the vertical plate of the second L-shaped plate 91, restricting the movement of the seat 2 in the front-back direction, thereby preventing the positioning pin 82 from disengaging from the accommodating space 7. During disassembly, by pressing the unlocking handle 67, the latch 64 is flipped downwards, causing the latch 64 to disengage from the vertical plate of the second L-shaped plate 91, and the seat 2 can be moved forward to separate the seat 2 from the quick-release connecting bracket 4.

[0045] It should also be noted that the cross-sectional shape of the hinge seat 62 is an inverted U-shape, and a first shaft hole is provided on both side walls of the hinge seat 62. The cross-sectional shape of the latch 64 is U-shaped, and a second shaft hole is provided on both side walls of the latch 64. The two side walls of the latch 64 are respectively fitted with the two side walls of the hinge seat 62. The first shaft hole and the second shaft hole are connected. The rotating shaft 63 is inserted through the first shaft hole and the second shaft hole. One end of the torsion spring 65 abuts against the inner end face of the hinge seat 62, and the other end of the torsion spring 65 abuts against the inner end face of the latch 64. In this way, both the hinge seat 62 and the latch 64 can be formed by sheet metal stamping and bending, which is easy to process and can save processing costs. Furthermore, both the hinge seat 62 and the latch 64 adopt a U-shaped structure design, which provides installation space for the torsion spring 65. The design is reasonable and convenient for assembly.

[0046] The second L-shaped plate 91 has several limiting holes 92 on its vertical plate, and the mounting plate 61 has several limiting pins 68 on its bottom. The number of limiting pins 68 is the same as the number of limiting holes 92. When the second L-shaped plate 91 moves to a certain position along the longitudinal direction of the quick-release connecting bracket 4, each limiting pin 68 is inserted into its respective limiting hole 92. Understandably, the combination of the limiting holes 92 and the limiting pins 68 restricts the degree of freedom of the seat 2 in the left-right and up-down directions, making the seat 2 more securely installed.

[0047] The folding seat 5 includes an outer frame 51, the beginning of which is rotatably connected to the inner wall of the storage slot 11. A first groove 511 is provided on the outer frame 51 along its length. An inner frame 52 is slidably disposed in the first groove 511. The inner frame 52 can extend or retract along the first groove 511. A support plate 53 is rotatably connected to the end of the outer frame 51. When the inner frame 52 extends out of the first groove 511, the support plate 53 flips outward relative to the outer frame 51. A second groove 521 is provided on the inner frame 52 along its length. An armrest 54 is slidably disposed in the second groove 521. The end of the inner frame 52 extends out of the first groove 511 and is rotatably connected to a stool 55. The armrest 54 can extend or retract along the second groove 521. When the armrest 54 extends out of the second groove 521, the stool 55 flips outward relative to the inner frame 52. When two people need to sit, the outer frame 51 can be lifted, and the armrest 54 and inner frame 52 can be pulled out, so that the support plate 53 and the bench 55 can be flipped outward, thereby making the folding seat 5 unfolded for relatives and friends to sit on.

[0048] The folding seat 5 also includes a first tension spring 56, one end of which is connected to the inner wall of the first slide groove 511, and the other end of which is connected to the inner wall of the second slide groove 521. First mounting posts 512 are provided on symmetrical sides of the outer frame 51, and first sleeves 531 are provided on symmetrical sides of the support plate 53. The first sleeves 531 are fitted onto the first mounting posts 512. Several first protrusions 532 are provided along the circumferential direction of the outer periphery of the first sleeves 531. A third... A waist-shaped hole 513 is provided, and a first sliding post 522 is provided on both sides of the inner frame 52. The first sliding post 522 passes through the first waist-shaped hole 513 and is connected to a toothed member 523. An extension plate 524 extending towards the first sleeve 531 is formed on the toothed member 523. Several second protruding teeth 525 for meshing with the first protruding teeth 532 are formed on the extension plate 524. An arc-shaped groove 526 is formed on the side of the toothed member 523 facing the first sleeve 531. A retaining tooth 527 is formed on the inner wall of the arc-shaped groove 526. After the inner frame 52 is pulled out of the first slide groove 511 to a certain length, the first protrusion 532 on the extension plate 524 will mesh with the second protrusion 525, causing the first sleeve 531 to rotate, thereby causing the support plate 53 to flip outward. When the support plate 53 flips outward to a certain angle, the locking teeth 527 on the inner wall of the arc groove 526 will engage in the gap between the two adjacent first protrusions 532, preventing the first sleeve 531 from rotating, thereby preventing the support plate 53 from flipping.

[0049] The folding seat 5 also includes a second tension spring 57, the tension of which is greater than that of the first tension spring 56. One end of the second tension spring 57 is connected to the inner wall of the second slide groove 521, and the other end is connected to the armrest 54. Second oblong holes 528 are provided on opposite sides of the inner frame 52. The armrest 54 is provided with a second sliding post 541 for sliding engagement with the second oblong hole 528. A second sleeve 542 is fitted onto the second sliding post 541, and a first transmission rod 543 is connected to the second sleeve 542. Second mounting posts 529 are provided on opposite sides of the second slide groove 521, and a third sleeve 5210 is fitted onto the second mounting post 529. A third sleeve 5210 is connected to the third sleeve 5210. There is a second transmission rod 5211, and the first transmission rod 543 and the second transmission rod 5211 are hinged together. The outer side of the third sleeve 5210 is formed with a number of third protrusions 5212 along its circumference. The second slide groove 521 is provided with a third mounting post 5213 on opposite sides and above the second mounting post 529. A fourth sleeve 5214 is sleeved on the third mounting post 5213. The outer side of the fourth sleeve 5214 is formed with a fourth protrusion 5215 that meshes with the third protrusions 5212. A flip plate 5216 extending out of the second slide groove 521 is connected to the fourth sleeve 5214. The stool 55 is set on the flip plate 5216. The inner side of the stool 55 is rotatably connected to a support rod 551. It should be noted that the outer frame 51 and the inner frame 52 are connected by the first tension spring 56, and the handrail 54 and the inner frame 52 are connected by the second tension spring 57. Since the tension of the second tension spring 57 is greater than that of the first tension spring 56, when the handrail 54 is pulled to move, the first tension spring 56 begins to deform first, and the inner frame 52 slides out of the first slide groove 511 first, causing the support plate 53 to flip outward to a certain angle. Then, the second tension spring 57 begins to deform, and the handrail 54 slides out of the second slide groove 521, causing the second sliding column 541 to slide along the second oblong hole 528. When the second sliding column 541 moves, it drives the third sleeve 5210 to rotate through the transmission of the first sleeve 531, the first transmission rod 543 and the second transmission rod 5211. When the third sleeve 5210 rotates, it drives the fourth sleeve 5214 to rotate through the cooperation of the third convex tooth 5212 and the fourth convex tooth 5215. The rotation of the fourth sleeve 5214 drives the flip plate 5216 to flip outward, thereby driving the stool 55 to flip outward. After the stool 55 flips outward, the support rod 551 is flipped out so that its end abuts against the inner frame 52 to support the stool 55.

[0050] A rubber sleeve 552 is fitted around the outer periphery of the stool board 55. The rubber sleeve 552 includes a first collar 553, a second collar 554, a third collar 555, and a retaining ring 556. The first collar 553 is fitted around the outer periphery of the stool board 55. The upper part of the first collar is connected to the lower part of the second collar 554, and a first crease 557 is provided at the connection between the first collar 553 and the second collar 554. The upper part of the second collar is connected to the lower part of the third collar 555, and a second crease 558 is provided at the connection between the second collar 554 and the third collar 555. The upper part of the third collar 555 is connected to the retaining ring 556. When the folding seat 5 is in the folded state, the latch ring 556 can be pulled to lift the second latch ring 554 and the third latch ring 555 to form a semi-enclosed frame with the seat board 55, which is convenient for placing items. When the folding seat 5 is in the unfolded state, the second latch ring 554 and the third latch ring 555 can be folded into a flat shape along the first crease 557 and the second crease 558 for relatives and friends to sit on.

[0051] The folding seat 5 also includes a folding seat support frame 58, on which a slider 581 is provided. A third slide groove 533 is provided on the support plate 53 along its length direction. The slider 581 is slidably disposed in the third slide groove 533. An mounting block 534 is provided on the inner side of the support plate 53. A support spring 582 is connected to the beginning of the mounting block 534 and the folding seat support frame 58. A support wheel 586 is provided at the end of the folding seat support frame 58. A first mounting seat 583 is provided on the folding seat support frame 58. A first push spring 584 is provided in the first mounting seat 583. A locking block 585 is provided on the first push spring 584. A locking groove 535 for cooperating with the locking block 585 is provided on the support plate 53. It should be noted that when the folding seat 5 is in the folded state, the locking block 585 and the locking groove 535 are engaged to prevent the folding seat support frame 58 from sliding out. When the folding seat 5 is in the unfolded state, the locking block 585 can be pressed to disengage from the locking groove 535. The folding seat support frame 58 slides out under the action of the support spring 582, so that the support wheel 586 contacts the ground and supports the outer frame 51.

[0052] A second mounting base 5217 is provided on the inner frame 52 near its beginning. A second push spring 5218 is provided in the second mounting base 5217. A first stop block 5219 is provided on the second push spring 5218. A first groove 5220 is provided on the first stop block 5219 for the end edge of the outer frame 51 to be inserted. A third mounting base 544 is provided on the support frame 54 near its beginning. A third push spring 545 is provided in the third mounting base 544. A second stop block 546 is provided on the third push spring 545. A second groove 547 is provided on the second stop block 546 for the end edge of the inner frame 52 to be inserted. When the inner frame 52 and the handrail 54 are pulled out to a certain length, the second push spring 5218 and the third push spring 545 cause the second stop 546 and the third stop to be lifted up, respectively abutting against the outer frame 51 and the inner frame 52, thereby keeping the inner frame 52 and the handrail 54 in the extended state. When it is necessary to retract the inner frame 52 and the handrail 54, simply press the second stop 546 and the third stop, and the inner frame 52 and the handrail 54 will retract under the action of the first tension spring 56 and the second tension spring 57.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A mobility scooter, characterized in that, Includes chassis, seats, seat support frame, quick-release connector frame and folding seat; The seat support frame is located on the top of the chassis, and the quick-release connecting frame is located on the upper end of the seat support frame. The quick-release connecting frame has a locking element and a receiving space arranged longitudinally. The bottom of the seat has a limiting element and a positioning element arranged longitudinally. The positioning element can move longitudinally to extend into the receiving space. After the positioning element extends into the receiving space, the locking element abuts against the limiting element to prevent the positioning element from disengaging from the receiving space. The top of the chassis has a storage slot located behind the seat support frame, and the folding seat can be folded and stored in the storage slot. The folding seat includes an outer frame, the beginning of which is rotatably connected to the inner wall of the storage slot. A first slide groove is provided on the outer frame along its length, and an inner frame is slidably disposed in the first slide groove. The inner frame can extend or retract along the first slide groove. A support plate is rotatably connected to the end of the outer frame. When the inner frame extends from the first slide groove, the support plate flips outward relative to the outer frame. A second slide groove is provided on the inner frame along its length, and an armrest is slidably disposed in the second slide groove. The end of the inner frame extends out of the first slide groove and is rotatably connected to a stool. The armrest can extend or retract along the second slide groove. When the armrest extends from the second slide groove, the stool flips outward relative to the inner frame. The folding seat also includes a first tension spring, one end of which is connected to the inner wall of the first slide groove, and the other end of which is connected to the inner wall of the second slide groove. The outer frame has first mounting posts on two symmetrical sides, and the support plate has first sleeves on two symmetrical sides. The first sleeves are fitted onto the first mounting posts. The outer circumference of the first sleeves has several first protruding teeth along its circumferential direction. The outer frame also has first waist-shaped holes on two symmetrical sides. The inner frame has first sliding pillars on two symmetrical sides. The first sliding pillars pass through the first waist-shaped holes and are connected to a toothed component. The toothed component has an extension plate formed on it that extends toward the first sleeve. The extension plate has several second protruding teeth formed on it that mesh with the first protruding teeth. The toothed component has an arc-shaped groove formed on the side facing the first sleeve, and the inner wall of the arc-shaped groove has locking teeth. The folding seat also includes a second tension spring, the tension of which is greater than that of the first tension spring. One end of the second tension spring is connected to the inner wall of the second slide groove, and the other end is connected to the armrest. A second waist-shaped hole is provided on two symmetrical sides of the inner frame. A second sliding post is provided on the armrest for sliding engagement with the second waist-shaped hole. A second sleeve is fitted on the second sliding post, and a first transmission rod is connected to the second sleeve. A second mounting post is provided on two opposite sides of the second slide groove. A third sleeve is fitted on the second mounting post, and a second transmission rod is connected to the third sleeve. The first transmission rod and the second transmission rod are hinged together. Several third protruding teeth are formed along the circumference of the outer side of the third sleeve. A third mounting post is provided on two opposite sides of the second slide groove and above the second mounting post. A fourth sleeve is fitted on the third mounting post. A fourth protruding tooth is formed on the outer side of the fourth sleeve that meshes with the third protruding tooth. A flip plate extending out of the second slide groove is connected to the fourth sleeve. The stool is set on the flip plate, and a support rod is rotatably connected to the inner side of the stool.

2. The mobility scooter according to claim 1, characterized in that: The positioning component includes a first L-shaped plate, the horizontal plate of the first L-shaped plate is connected to the seat, and a positioning pin is provided on the vertical plate of the first L-shaped plate. The quick-release connecting frame is formed by four side frames, and the edges of the side frames extend inward with a stop. The stop and the side frames restrict the accommodating space. When the first L-shaped plate moves longitudinally to a certain position, the positioning pin extends into the accommodating space. Side baffles are symmetrically arranged on the quick-release connecting frame, and chamfers are provided on the left and right sides of the horizontal plate of the first L-shaped plate.

3. The mobility scooter according to claim 2, characterized in that: The limiting component includes a second L-shaped plate, the horizontal plate of which is connected to the seat. The locking component includes a mounting plate, which is horizontally mounted on the quick-release connecting frame. The bottom of the mounting plate has a hinge seat, and a latch is rotatably connected to the hinge seat via a pivot. A torsion spring is sleeved on the pivot. One end of the torsion spring is connected to the hinge seat, and the other end is connected to the latch. After the positioning pin is inserted into the accommodating space, the latch abuts against the vertical plate of the second L-shaped plate under the action of the torsion spring. The bottom of the latch has an unlocking rod. The front end of the quick-release connecting frame has a through groove, and the end of the unlocking rod extends out of the through groove and is connected to an unlocking handle.

4. The mobility scooter according to claim 3, characterized in that: The second L-shaped plate has several limiting holes on its vertical plate and several limiting pins on the bottom of the mounting plate. The number of limiting pins is the same as the number of limiting holes. When the second L-shaped plate moves to a certain position along the longitudinal direction of the quick-release connecting frame, each limiting pin is inserted into its respective limiting hole.

5. The mobility scooter according to claim 1, characterized in that: The outer periphery of the stool is fitted with a rubber sleeve, which includes a first ring, a second ring, a third ring, and a retaining ring. The first ring is fitted around the outer periphery of the stool, and the upper part of the first ring is connected to the lower part of the second ring. A first crease is provided at the connection between the first ring and the second ring. The upper part of the second ring is connected to the lower part of the third ring, and a second crease is provided at the connection between the second ring and the third ring. The upper part of the third ring is connected to the retaining ring.

6. The mobility scooter according to claim 5, characterized in that: The folding seat also includes a folding seat support frame, on which a slider is provided. A third slide groove is provided on the support plate along its length direction, and the slider is slidably disposed in the third slide groove. An mounting block is provided on the inner side of the support plate. A support spring is connected to the mounting block and the beginning of the folding seat support frame. A support wheel is provided at the end of the folding seat support frame. A first mounting seat is provided on the folding seat support frame. A first push spring is provided in the first mounting seat. A locking block is provided on the first push spring. A locking groove for cooperating with the locking block is provided on the support plate.

7. The mobility scooter according to claim 6, characterized in that: A second mounting seat is provided on the inner frame near its beginning. A second push spring is provided in the second mounting seat. A first stop is provided on the second push spring. A first groove is provided on the first stop for the edge of the outer frame to be inserted. A third mounting seat is provided on the support frame near its beginning. A third push spring is provided in the third mounting seat. A second stop is provided on the third push spring. A second groove is provided on the second stop for the edge of the inner frame to be inserted.

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