Novel triple-folding vehicle

Abstract

The novel three-folding vehicle comprises a front vehicle set, a rear vehicle set, a supporting rod, a seat and an automatic folding assembly, a T-shaped frame is arranged on the rear vehicle set, the two ends of the T-shaped frame are connected with the front vehicle set and the supporting rod in a rotating connection mode respectively, and a first connecting rod mechanism is hinged between the front vehicle set and the rear vehicle set; a foldable seat is mounted on the rear vehicle group; the arranged seat can be automatically folded when the three-folding vehicle is folded, so that folding of the three-folding vehicle is not affected even if the length of the seat and the length of the inclined foot supporting plate are increased.

Description

Technical Field

[0001] This utility model relates to the field of baby strollers, specifically to a novel three-fold stroller with one-button unlocking and folding. Background Technology

[0002] Modern three-fold strollers can fold the front, rear, and support frames for easy carrying. However, the seat cannot be folded. The seat only swings when the front frame is folded close to the rear frame. Because there is a slant plate at the front of the seat, it swings downwards as the seat swings. Due to the limited height of the seat, the length of the seat must be limited to prevent the slant plate from contacting the ground when the entire seat and slant plate swing downwards. This results in a relatively short seat (smaller seating area) and a relatively short slant plate (the plate can only support part of the legs, leaving a large unsupported portion). Therefore, three-fold strollers are only suitable for small infants. Utility Model Content

[0003] To address the shortcomings of the existing technology, this utility model proposes a new type of three-fold bicycle with one-click unlocking and folding, which increases the length of the seat and the inclined support plate, while the seat can be folded. The increase in the length of the seat does not affect the folding of the three-fold bicycle.

[0004] To achieve the above objectives, the present invention provides a novel three-fold bicycle, comprising a front assembly, a rear assembly, a support rod, a seat, and an automatic folding assembly. A T-shaped frame is provided on the rear assembly, and the two ends of the T-shaped frame are respectively connected to the front assembly and the support rod by a rotational connection. A first linkage mechanism is hinged between the front assembly and the rear assembly, and a foldable seat is installed on the rear assembly.

[0005] The seat includes a folding seat plate and a slanted footrest. The folding seat plate is composed of a front plate and a rear plate. The front plate is rotatably connected to a T-shaped frame, and the rear plate is fixed on the T-shaped frame. The slanted footrest is hinged to the folding seat plate, and a support plate is installed on the folding seat plate to support the bottom of the slanted footrest.

[0006] The strut is fitted with a joint, the joint is equipped with an unlockable locking component, the joint is fitted with a trolley rod, the bottom of the trolley rod is hinged with a connecting rod, the pull rod is rotatably connected to the T-shaped frame, and a second linkage mechanism is hinged between the pull rod and the folding seat plate.

[0007] A hinged linkage assembly is connected between the second linkage mechanism and the bottom of the linkage.

[0008] Preferably, a first tension spring is provided between the bottom of the front plate and the bottom of the rear plate; and a second tension spring is provided between the bottom of the pull rod and the bottom of the front plate.

[0009] Preferably, an installation rod is installed at the bottom of the front plate near the front end, and multiple hanging rods are fixed at the bottom of the rear plate. A limit ball is provided at the bottom of the hanging rod, and the two ends of the first tension spring are respectively sleeved on the hanging rod and the installation rod.

[0010] Preferably, the first linkage mechanism is composed of two folding plates, the other ends of which are respectively hinged to the front and rear vehicle groups, and the two folding plates are hinged to each other; the second linkage mechanism includes a pull plate and an L-shaped plate, one end of which is hinged to the side of the flat plate at the front end of the folding seat plate, the other end of which is hinged to one end of the L-shaped plate, and the other end of the L-shaped plate is hinged to the bottom end of the linkage; the linkage component is a pull plate, both ends of which are bends, and the bends of the pull plate are respectively hinged to the bottom of the linkage and one of the folding plates.

[0011] Preferably, a support block is fixed inside the T-shaped frame, and an installation groove is opened on the support block. A support frame is installed at the bottom of the plate, and both ends of the support frame extend into the installation groove and are fixed. A groove for the support frame to be embedded is opened at the bottom of the rear plate. The top of the rear plate is flush with the top of the support block, and the rear plate abuts against the inner wall of the installation groove on both sides.

[0012] Preferably, a handrail is installed on the inside of the T-shaped frame by means of a detachable insertion method.

[0013] Preferably, a locking component is provided inside the joint, and an unlocking component for unlocking the locking component is provided on the pusher frame.

[0014] Compared with the prior art, the advantages of this utility model are:

[0015] The seat is set to fold automatically when the three-fold bicycle is folded, so increasing the length of the seat and the length of the footrest does not affect the folding of the three-fold bicycle;

[0016] The automatic folding of the seat and the three-folding carriage is achieved by using a first spring and a second spring. Attached Figure Description

[0017] Figure 1 A folding diagram of this utility model.

[0018] Figure 2 This is the right view of the present invention.

[0019] Figure 3 This is a perspective view of the present invention.

[0020] Figure 4 This is a bottom view of the present invention.

[0021] Figure 5 This is a cross-sectional view of the present invention.

[0022] Figure 6This is a schematic diagram of the support block, mounting groove, and support frame of this utility model.

[0023] Figure 7 This is an exploded view of the joint of this utility model.

[0024] Figure 8 This is a schematic diagram of the helical inclined surface and sleeve of the joint of this utility model.

[0025] Figure 9 This is a schematic diagram of the unlocking component of this utility model.

[0026] The components are as follows: 1. Front assembly, 2. Rear assembly, 3. Support rod, 4. Seat, 5. Folding seat, 5.1. Front flatbed, 5.2. Rear flatbed, 6. Slanted footrest, 7. Support plate, 8. Automatic folding assembly, 9. First linkage mechanism, 10. Joint, 11. Locking assembly, 12. Push rod, 13. Pull rod, 14. T-shaped frame, 15. Second linkage mechanism, 16. Linkage assembly, 17. First tension spring, 18. Second tension spring, 19. Mounting rod, 20. Hanging rod, 21. Limiting ball, 22. Folding piece, 23. Pull piece, 24. L-shaped piece, 25. Pull plate, 26. Support block, 27. Mounting groove, 28. Support frame, 29. Handrail, 30. Locking assembly, 31. Unlocking assembly. Detailed Implementation

[0027] The present invention will now be further described with reference to the accompanying drawings.

[0028] like Figure 1-9 As shown, the new three-fold bicycle includes a front assembly 1, a rear assembly 2, a folding rod, a seat 4, and an automatic folding assembly 8. A T-shaped frame 14 is provided on the rear assembly 2 (the rear assembly 2 is the rear frame on which the rear wheel is mounted). The front and rear ends of the T-shaped frame 14 are respectively connected to the front assembly 1 (the front assembly 1 is the front frame on which the front wheel is mounted) and the support rod 3 by means of hinges. A first linkage mechanism 9 is hinged between the front assembly 1 and the rear assembly 2. A foldable seat 4 is installed on the T-shaped frame 14 of the rear assembly 2.

[0029] The seat 4 includes a folding seat plate 5 and a slanted footrest 6. The folding seat plate 5 is composed of a front plate 5.1 and a rear plate 5.2. The front plate 5.1 is rotatably connected to a T-shaped frame 14 (a round rod is fixed to the side of the front plate 5.1, near the rear end of the front plate, and the round rod is rotatably connected to the inner side of the T-shaped frame 14 via a bearing). Thus, when folding, the front plate 5.1 can rotate, allowing the front plate 5.1 and rear plate 5.2 to fold together. The front end of the rear plate 5.2 is fixed to the rear plate 5.2 by bolts. On the T-shaped frame 14, the inclined support plate 6 is hinged to the folding seat plate 5. A support plate 7 is installed on the folding seat plate 5, which supports the bottom of the inclined support plate 6. The top surface of the support plate 7 is in contact with the inclined support plate 6. The support plate 7 is connected to the bottom of the front plate 5.1 by bolts. When working, the inclined support plate 6 can swing. Since the support plate 7 is fixedly connected to the front plate 5.1, the support plate 7 supports the bottom of the inclined support plate 6 when in use. When folding, the support plate 7 does not restrict the swing of the inclined support plate 6.

[0030] A joint 10 is installed at the top of the support rod 3. An unlockable locking assembly 11 is provided on the joint 10. A U-shaped trolley rod 12 is installed on the joint 10. The joint 10 is fixed to the middle section of the trolley rod 12. A pull rod 13 is hinged to the bottom of the trolley rod 12. The pull rod 13 is rotatably connected to the T-shaped frame 14. A second linkage mechanism 15 is hinged between the pull rod 13 and the folding seat plate 5. The joint 10 is formed by two joint 10 seats. There are two sets of joints 10. A joint 10 is installed at the top of each support rod 3. The two sets of joints 10 are installed on the same U-shaped trolley rod 12. The center of section 10 has a through hole with opposite orientation. A pin is inserted into the through hole, so that the two joints 10 rotate around the pin, thus realizing the relative rotation of the joints 10 and the folding of the push rod 12 and the support rod 3. When the push rod 12 swings upward, the bottom of the push rod 12 swings downward. Since the pull rod 13 is mounted on the T-shaped frame 14 by a pin, when the bottom of the push frame swings downward, the end of the pull rod 13 away from the push frame swings upward. Through the second linkage mechanism 15, the front plate 5.1 is swung downward to complete the folding of the front plate 5.1 and the rear plate 5.2.

[0031] A linkage assembly 16 is hinged between the second linkage mechanism 15 and the bottom of the linkage. The second linkage mechanism 15 pulls the first linkage mechanism 9 to fold through the linkage assembly 16, thus realizing the folding of the front vehicle group 1 and the rear vehicle group 2.

[0032] The first linkage mechanism 9 consists of two folding plates 22, the other ends of which are hinged to the front vehicle group 1 and the rear vehicle group 2, respectively. The two folding plates 22 are hinged to each other. When the hinge point of the two folding plates 22 moves upward, the folding plates 22 pull the front vehicle group 1 and the rear vehicle group 2 to fold together. The second linkage mechanism 15 includes a pull plate 23 and an L-shaped plate 24. One end of the pull plate 23 is hinged to the side of the front end of the front plate 5.1, and the other end of the pull plate 23 is hinged to one end of the L-shaped plate 24. The other end of the L-shaped plate 24 is fixedly connected to the bottom end of the pull rod 13 by bolts. When the end of the pull rod 13 that is hinged to the L-shaped plate 24 swings clockwise, the L-shaped plate 24 pulls the pull plate 23 to the right. Thus, the front plate 5.1 swings counterclockwise under the action of the pull plate 23, thereby folding the front plate 5.1 and the rear plate 5.2. The linkage component 16 is a pull... Both ends of plate 25 and pull plate 25 are bent. The bent ends of pull piece 23 are respectively hinged to the bottom of the connecting rod and the folding piece 22 (the folding piece 22 is hinged to the folding piece 22 of the rear wheel seat). When folding, joint 10 is unlocked, push rod 12 rotates counterclockwise, and the hinge of push rod 12 and pull rod 13 rotates counterclockwise. Pull rod 13 rotates around T-shaped frame 14. The end of pull rod 13 away from the pusher frame rotates clockwise. The tail of pull rod 13 pulls folding piece 22 upward through pull plate 25. The other folding piece 22 also swings upward, so the front group 1 and the rear group 2 are folded together. When the tail of pull rod 13 swings clockwise, L-shaped piece 24 also swings clockwise. L-shaped piece 24 pulls pull piece 23 to the right. Pull piece 23 pulls front plate 5.1 to swing counterclockwise, so the front plate 5.1 and the rear plate 5.2 are folded together.

[0033] A first tension spring 17 is provided between the bottom of the front plate 5.1 and the bottom of the rear plate 5.2. An installation rod 19 is provided at the bottom of the front plate 5.1 near the front end (a sleeve is fixed to the inner side of the front end of the pull plate 23 by welding, and the two ends of the installation rod 19 are inserted into the sleeve). Two vertically arranged hanging rods 20 are fixed to the bottom of the rear plate 5.2 by welding. A limit ball 21 is fixed to the bottom of the hanging rod 20 by integral molding and turning. The hooks at both ends of the first tension spring 17 are respectively hung on the hanging rod 20 and the installation rod 19.

[0034] A second tension spring 18 is provided between the bottom of the pull rod 13 and the bottom of the folded plate 5.1. A hanging rod 20 is fixed to the inner side of the pull rod 13 near the bottom by welding. The hanging rod 20 is also fixed with a limit ball 21 by integral machining. Hooks are fixed to both ends of the second spring by welding. The hooks of the second spring are respectively hung on the pull rod 13 at the bottom of the pull rod 13 and the mounting rod 19.

[0035] To achieve automatic folding, after joint 10 is unlocked, since the position of the rear plate 5.2 remains unchanged, the first spring moves the mounting rod 19 towards the bottom of the rear plate 5.2, causing the front plate 5.1 and the rear plate 5.2 to fold first, and then the front plate 5.1 stops swinging. Under the action of the second spring, since the position of the front plate 5.1 remains unchanged, the second spring pulls the bottom of the pull rod 13 to the upper left, and the other end of the pull rod 13 swings downward. At the same time, the push handle swings counterclockwise and fits against the support rod 3. Since the bottom of the pull rod 13 swings to the upper left under the action of the L-shaped piece 24, the bottom of the pull rod 13 pulls the folding piece 22 upward through the pull piece 23, so that the folding piece 22 closes and folds. The folding piece 22 pulls the front vehicle group 1 and the rear vehicle group 2 to fold and close, thus achieving one-button unlocking and folding.

[0036] Support blocks 26 are fixed to the inner sides of the two T-shaped brackets 14 by bolts. Mounting grooves 27 are opened on the top surface of the support blocks 26. Support brackets 28 are installed at the bottom of the rear plate 5.2. The two ends of the support brackets 28 extend into the mounting grooves 27 and are fixed by bolts. The bottom of the rear plate 5.2 has a groove for the support brackets 28 to be inserted. The support brackets 28 are snapped into the grooves at the bottom of the rear plate 5.2 and then fixed to the rear plate 5.2 by bolts. The top of the rear plate 5.2 is flush with the top of the support blocks 26. The rear plate 5.2 abuts against the inner wall of the mounting grooves 27 on both sides to prevent the support brackets 28 from moving left and right.

[0037] A handrail 29 is installed inside the T-shaped frame 14 by means of detachable insertion. A slot is fixed inside the T-shaped frame 14 by means of bolt fastening. The handrail 29 is a U-shaped handrail 29. The two ends of the handrail 29 are fixed with pins by means of bolt fastening. The pins are inserted into the slots.

[0038] A locking component 11 is provided within the joint 10, and an unlocking component 30 is provided on the pusher frame to unlock the locking component 11. Both the locking component 11 and the unlocking component 30 are existing technologies used in commercially available baby strollers. The locking component 11 and the unlocking component 30 have appeared multiple times in the company's previous patent applications. Circular slots are formed on the mating surfaces of the two joint 10 seats. Multiple toothed grooves are formed on the inner wall of each slot. The slots on the two joint 10 seats are connected, and gears that mesh with the toothed grooves are embedded in the slots. The gears move within the two slots. The sliding mechanism features a helical inclined surface integrally injection-molded at the bottom of the inner joint 10 seat groove. A sleeve is positioned between the gear and the helical inclined surface, fitting onto the pin. The sleeve has a groove on its side facing the helical inclined surface that mates with it. When the sleeve rotates, the inclined surface of the sleeve moves along the helical inclined surface, causing the sleeve to move outward and push the gear outward. The gear disengages from the inner joint 10 seat, engaging with the tooth groove on the outer joint 10 seat. This unlocks and allows the joint 10 seat to rotate. A spring is installed between the slots of the 10 joints. A cable is fixed to the sleeve by welding. The cable extends into the pusher frame and connects to the unlocking component 30. A notch is made in the inner wall of the pusher frame. The unlocking component 30 is an elastic pressing block. The elastic pressing block extends into the pusher frame through the notch. An installation block is fixed in the pusher frame by bolts. Sliding grooves are made on the upper and lower surfaces of the installation block. A moving block is made in the sliding groove and slides within the groove. The top of the moving block is a triangular bevel. The elastic pressing block has a triangular bevel that matches the moving block. The inclined surface of the elastic pressing block is fixed with a spring by welding between the bottom of the elastic pressing block and the pusher frame. The spring pushes the elastic pressing block outward. When the elastic pressing block is pressed, the cable is pulled. The cable is embedded in the joint 10 through the hollow pusher frame and fixed to the sleeve through the threaded joint. The cable pulls the sleeve to rotate, thus unlocking. When the pressing of the elastic pressing block is stopped, the cable loses tension, and the gear between the gear and the joint 10 seat presses the gear inward. Thus, the gear is locked on the two joint 10 seats, thereby locking the joint 10.

Claims

1. A novel three-fold bicycle, comprising a front assembly, a rear assembly, a support rod, a seat, and an automatic folding component, wherein a T-shaped frame is provided on the rear assembly, and the two ends of the T-shaped frame are respectively connected to the front assembly and the support rod by a rotatable connection; a first linkage mechanism is hinged between the front assembly and the rear assembly, characterized in that... Foldable seats are installed on the rear section; The seat includes a folding seat plate and a slanted footrest. The folding seat plate is composed of a front plate and a rear plate. The front plate is rotatably connected to a T-shaped frame, and the rear plate is fixed on the T-shaped frame. The slanted footrest is hinged to the folding seat plate, and a support plate is installed on the folding seat plate to support the bottom of the slanted footrest. The strut is fitted with a joint, the joint is equipped with an unlockable locking component, the joint is fitted with a trolley rod, the bottom of the trolley rod is hinged with a connecting rod, the pull rod is rotatably connected to the T-shaped frame, and a second linkage mechanism is hinged between the pull rod and the folding seat plate. A hinged linkage assembly is connected between the second linkage mechanism and the bottom of the linkage.

2. The novel three-fold bicycle according to claim 1, characterized in that, A first tension spring is provided between the bottom of the front plate and the bottom of the rear plate; a second tension spring is provided between the bottom of the pull rod and the bottom of the front plate.

3. The novel three-fold cart according to claim 2, characterized in that, An installation rod is installed at the bottom of the front plate near the front end, and multiple hanging rods are fixed at the bottom of the rear plate. Limiting balls are set at the bottom of the hanging rods, and the two ends of the first tension spring are respectively sleeved on the hanging rods and the installation rods.

4. The novel three-fold bicycle according to claim 3, characterized in that, The first linkage mechanism consists of two folding plates, the other ends of which are hinged to the front and rear vehicle groups respectively, and the two folding plates are hinged to each other; the second linkage mechanism includes a pull plate and an L-shaped plate, one end of which is hinged to the side of the folding seat plate at the front, the other end of which is hinged to one end of the L-shaped plate, and the other end of the L-shaped plate is hinged to the bottom end of the linkage; the linkage component is a pull plate, both ends of which are bends, and the bends of the pull plate are hinged to the bottom of the linkage and one of the folding plates respectively.

5. The novel three-fold bicycle according to claim 4, characterized in that... A support block is fixed inside the T-shaped frame, and an installation groove is opened on the support block. A support frame is installed at the bottom of the plate, and the two ends of the support frame extend into the installation groove and are fixed. A groove for the support frame to be embedded is opened at the bottom of the rear plate. The top of the rear plate is flush with the top of the support block, and the rear plate rests against the inner wall of the installation groove on both sides.

6. The novel three-fold bicycle according to claim 5, characterized in that, Handrails are installed on the inside of the T-shaped frame using a detachable insertion method.

7. The novel three-fold bicycle according to claim 6, characterized in that, A locking component is provided inside the joint, and an unlocking component is provided on the pusher frame to unlock the locking component.

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