A stroller that can be automatically collapsed in both directions

Abstract

The application discloses a bidirectional automatic folding child stroller, which comprises a seat group and a frame group, the seat group is rotatably installed between the frame group, the seat group is provided with a seat joint part, the seat joint part is provided with a seat lock block, the frame group comprises an inner joint part, an armrest joint part, a gear ring and a rear leg joint part which are rotatably installed in sequence, and the locking structure is arranged in each joint part, the locking state of each joint part can be released by folding the seat group with one hand, and then the folding and folding of the whole stroller can be completed by holding the whole stroller with one hand. The application realizes the quick folding and folding of the stroller by one-hand operation, the seat group is folded and rotated, each joint part is unlocked in sequence, and the folding is automatically completed according to the gravity, so that the folding difficulty is reduced, the folding efficiency is improved, and the application is more humanized.

Description

Technical Field

[0001] This invention relates to the field of stroller technology, and in particular to a children's stroller that can automatically fold in both directions. Background Technology

[0002] Strollers are a common mode of transportation for parents to take their children or infants out. Existing strollers have reversible seats to meet the needs of parents and children. However, many existing strollers cannot fold down after the seat is reversed, requiring parents to reset the seat before folding. Folding down requires both hands, especially for larger strollers. Sometimes, mothers need to hold the child in one arm and fold down the stroller with the other. Without assistance, folding down with one hand undoubtedly increases the difficulty. Based on the current market demand, this invention addresses a stroller that can fold down the seat in both directions with one hand. After folding the seat with one hand, rotating the seat unlocks the frame joint, and the frame automatically folds down. This allows for automatic folding and folding with one hand, reducing the difficulty of folding down, improving folding efficiency, and making it more user-friendly. Summary of the Invention

[0003] The purpose of this invention is to provide a stroller that can automatically fold in both directions.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A bidirectional automatically folding stroller includes a seat assembly and a frame assembly. The seat assembly is rotatably mounted between the frame assembly, and includes a seat joint with a seat locking block. The frame assembly includes an inner joint, an armrest joint, a toothed ring, and a rear leg joint, which are rotatably mounted sequentially. The inner joint has a side opening that communicates with both sides on its outer side and an unlocking pusher on its inner side. The unlocking pusher engages with two armrest locking blocks for locking the armrest joint. Folding the seat assembly and pushing the seat locking blocks down through the side openings presses down the unlocking pusher, causing the unlocking pusher to move downwards. The movement of the handrail lock block releases the lock on the handrail joint. The toothed ring is fitted onto the handrail joint and rotates synchronously with the inner joint. A rear foot pusher is provided on the inner side of the toothed ring. The handrail joint has a rear foot lock facing the rear foot joint, and a rear foot pusher is movably installed in the rear foot lock. The rear foot joint has a rear foot movement cavity with an opening aligned with the rear foot lock. A rear foot lock is provided in the rear foot movement cavity. The rear foot lock is inserted into the rear foot lock along the opening. The rear foot pusher pushes the rear foot lock out of the rear foot lock to release the lock.

[0006] Furthermore, the seat assembly includes a seat frame and a backrest frame. The seat joints are two in number and symmetrically arranged on both sides of the seat frame. A railing joint is rotatably mounted on the inner side of the seat frame and the seat joint. The railing joint and the seat joint have aligned railing latches, and a railing locking block is movably mounted within each latch. The backrest frame includes a backrest joint and a backrest locking block. The backrest joint includes a rotating part and a top. The rotating part is rotatably mounted between the railing joint and the seat joint. The top has an inward-facing opening. The backrest has a movable cavity, and the backrest locking block is movably installed in the movable cavity and engages with the seat joint. The backrest locking block is connected to a pull rope. By pulling the pull rope, it is pulled back into the movable cavity to release the locking state with the seat joint. The backrest frame is folded and rotated. The rotating part has an upward pushing part that engages with the seat locking block and a downward pushing part that engages with the railing locking block. The upward pushing part pushes the seat locking block downward and pushes the unlocking pusher. The downward pushing part pushes the railing locking block upward and exits the railing lock, releasing the locking state of the railing joint.

[0007] Furthermore, the backrest frame is provided with a backrest connecting frame that connects the two backrest joints. The backrest connecting frame is provided with a control handle. The control handle is connected to a pull rope. Rotating the control handle will pull the pull rope. The backrest locking block is provided with a return spring for pushing it downward to engage with the seat joint.

[0008] Furthermore, the seat joint is provided with a slot for installing a fence lock block, and the fence lock block is provided with a return spring for pushing the fence lock block downward to move into the fence lock slot.

[0009] Furthermore, a fence connecting frame is connected between the two fence joints.

[0010] Furthermore, a seat plate is installed on the seat joint by screws. The seat plate has multiple latches that engage with the backrest locking block. The backrest locking block enters the latch and restricts its rotation. Pulling the pull rope will disengage it from the latch.

[0011] Furthermore, the seat joint is provided with a recessed portion, which has a large recess and a small recess at the bottom. The inner joint is provided with a protrusion that engages with the recessed portion. The protrusion has an opening that communicates with the front and back. A toothed ring connector is movably installed at the opening of the inner joint. When the seat assembly is installed facing forward, one end of the toothed ring connector passes through the opening and abuts against the flange of the small recess, while the other end disengages from the toothed ring and moves within the inner groove of the toothed ring. When the seat assembly is installed in reverse, one end of the toothed ring connector passes through the opening and embeds into the large recess, while the other end engages with the groove in the inner groove of the toothed ring. The toothed ring and the inner joint rotate synchronously.

[0012] Furthermore, the gear ring connector includes a front push block, a middle adjustment block, and a rear locking block. The middle adjustment block is provided with guide slopes that respectively cooperate with the front push block and the rear locking block. The front push block is disposed in the opening and is provided with a stepped portion that cooperates with the large recess or the small recess.

[0013] When the seat assembly is installed facing forward, the flange of the stepped portion abuts and engages with the small concave portion, the front push block retracts into the opening, the front push block pushes the middle adjustment block to move toward the rear locking block, and the middle adjustment block pushes the rear locking block to move toward the inner joint portion and disengage from the slot of the gear ring;

[0014] When the seat assembly is installed in reverse, the stepped portion is embedded in the large recess, the front push block moves toward the inward joint, the middle adjustment block moves away from the rear locking block, and the rear locking block moves toward the gear ring and enters the slot to engage with the gear ring.

[0015] Furthermore, the frame assembly also includes a front foot and a rear foot. The rear foot joint is provided with a front mounting part and a rear mounting part. The front mounting part is provided with a front foot rotation port. The front foot is provided with a front foot bracket that is rotatably mounted to the front foot rotation port. The rear foot is provided with a rear foot bracket that is inserted and mounted to the rear mounting part. A folding frame is rotatably mounted on the armrest joint. The folding frame is provided with an upper connector, a front connector, and a rear connector. One end of the upper connector is rotatably mounted on the armrest joint, and the other end is rotatably mounted to the front connector and the rear connector. The front connector is rotatably mounted to the front foot bracket, and the rear connector is rotatably mounted to the rear foot bracket.

[0016] Furthermore, the handrail joint is provided with a handrail mounting part, the handrail mounting part is equipped with a telescopic tube, and a handrail connecting frame is provided between the two telescopic tubes.

[0017] By adopting the above technical solution, the present invention has the following advantages compared with the prior art:

[0018] This invention enables the entire vehicle to be folded with one hand. The seats can be positioned facing forward or backward. In the unfolded state, folding the seat assembly first causes the seat locking block to press down on the side opening of the inner joint. At this time, the unlocking pusher is pushed by the seat locking block of the seat assembly to move the armrest locking block, releasing the locking state between the inner joint and the armrest joint. Continuing to rotate the seat assembly causes the inner joint and the gear ring to rotate. The gear ring pushes the rear foot pusher to push the rear foot locking block out of the rear foot locking opening, releasing the locking state between the armrest joint and the rear foot joint. At this time, all parts of the vehicle are in the unlocked state. The user can fold and fold the entire vehicle with one hand by rotating each part in sequence. After folding the seat, when the seat assembly is rotated in the folding direction, it drives each joint to unlock in sequence. Each joint rotates under the action of gravity and automatically folds. Unfolding only requires unfolding in sequence, reducing the difficulty of folding the vehicle, improving the folding efficiency, and making it more user-friendly. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the vehicle of the present invention;

[0020] Figure 2 This is a schematic diagram of the seating arrangement of the present invention;

[0021] Figure 3 This is a schematic diagram showing the partial breakdown of the seat assembly and seat joint of the present invention;

[0022] Figure 4 This is an exploded view of the seating arrangement of the present invention.

[0023] Figure 5 This is an exploded view of the seating arrangement of the present invention from another angle;

[0024] Figure 6 This is a schematic diagram of the seat assembly without railing joints according to the present invention;

[0025] Figure 7 This is a schematic diagram of the fence joint and fence connecting frame of the present invention;

[0026] Figure 8 This is a schematic diagram of the installation of each joint of the frame assembly of the present invention;

[0027] Figure 9 This is a schematic diagram showing the breakdown of each joint of the frame assembly of the present invention;

[0028] Figure 10 This is a schematic diagram of the breakdown of each joint of the frame assembly from another angle according to the present invention;

[0029] Figure 11 This is a flowchart illustrating the folding process of the seat assembly of the present invention with its forward-facing installation.

[0030] Figure 12 This is a flowchart illustrating the folding process of the seat assembly of the present invention with reverse installation.

[0031] Explanation of reference numerals in the attached figures:

[0032] Seat assembly 1; Frame assembly 2; Seat joint 11; Seat locking block 12; Seat frame 13; Backrest frame 14; Seat board 15; Recess 16; Guardrail joint 131; Guardrail locking 132; Guardrail locking block 133; Guardrail connecting frame 134; Backrest joint 141; Backrest locking block 142; Rotating part 143; Top 144; Backrest movable cavity 145; Upward push part 146; Downward push part 147; Backrest connecting frame 148; Control handle 149; Large recess 161; Small recess 162; Inner joint 21; Armrest joint 22; Tooth ring 23; Rear leg joint 24; Front leg 2 5; Rear foot 26; Folding frame 27; Side opening 211; Unlocking push piece 212; Handrail locking block 213; Protrusion 214; Rear foot locking opening 221; Rear foot push block 222; Handrail mounting part 223; Telescopic tube 224; Handrail connecting frame 225; Rear foot push part 231; Inner groove part 232; Slot 233; Rear foot movable cavity 241; Rear foot locking block 242; Front mounting part 243; Rear mounting part 244; Front foot bracket 251; Rear foot bracket 261; Upper connector 271; Front connector 272; Rear connector 273; Front push block 281; Middle adjustment block 282; Rear locking block 283. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0034] It should be noted that in this invention, the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element of this invention must have a specific orientation, and therefore should not be construed as a limitation of this invention. Example

[0035] Cooperate Figures 1 to 12 As shown, the present invention discloses a bidirectional automatic folding stroller, including a seat assembly 1 and a frame assembly 2. The seat assembly 1 is rotatably installed between the frame assembly 2 in a forward or backward direction. The seat assembly 1 is provided with a seat joint 11, and the seat joint 11 is provided with a seat locking block 12. The seat joint 11 is provided with a left and right communicating opening. The seat locking block 12 is movably installed in the opening and cooperates with the frame assembly 2.

[0036] The frame assembly 2 includes an inner joint 21, an armrest joint 22, a gear ring 23, and a rear leg joint 24, which are rotatably mounted in sequence. The inner joint 21 has a side opening 211 that communicates with the left and right sides on its outer side, and an unlocking pusher 212 on its inner side. The inner joint 21 has a movable groove for movably mounting the unlocking pusher 212. The unlocking pusher 212 is equipped with two armrest locking blocks 213 for locking the armrest joint 22. The unlocking pusher 212 has two inclined push platforms, and the armrest locking blocks 213 have push openings that cooperate with the inclined push platforms. When the unlocking pusher moves downward, the armrest locking blocks 213 move towards the inner joint 21, disengaging from the locking grooves on the armrest joint 22 where the armrest locking blocks 213 are mounted. The seat assembly 1 is folded, and the seat locking blocks 12 are pushed down through the side opening 211 to press the unlocking pusher 21. 2. The unlocking pusher 212 moves downward and drives the armrest locking block 213 to move, releasing the locking state with the armrest joint 22. The toothed ring 23 is fitted on the armrest joint 22 and rotates synchronously with the inner joint 21. A rear foot pusher 231 is provided on the inner side of the toothed ring 23. The armrest joint 22 is provided with a rear foot locking port 221 facing the rear foot joint 24, and a rear foot pusher 222 is movably installed in the rear foot locking port 221. The rear foot joint 24 is provided with a rear foot moving cavity 241 and an opening that aligns with the rear foot locking port 221. A rear foot locking block 242 is provided in the rear foot moving cavity 241. The rear foot locking block 242 is inserted into the rear foot locking port 221 along the opening. The rear foot pusher 222 pushes the rear foot locking block 242 out of the rear foot locking port 221 to release the locking state.

[0037] In this embodiment, a locking block can be provided between the toothed ring 23 and the inner joint portion 21. The locking block is fixedly installed in the locking groove of the toothed ring 23 and the inner joint portion 21. When the joint portion 21 rotates, the toothed ring 23 rotates synchronously.

[0038] This embodiment features a locking structure between the seat assembly and the frame assembly, as well as a locking structure within each joint. By folding the seat assembly with one hand, the locking status of each joint can be released, allowing all structures of the vehicle to rotate and fold. Subsequently, the entire vehicle can be folded and folded with one hand, enabling quick folding and folding with one hand, reducing the difficulty of folding the vehicle, improving folding efficiency, and making it more user-friendly.

[0039] In this embodiment, the rear foot pusher 231 and the rear foot pusher 222 are provided with a cooperating inclined structure. When the gear ring 23 rotates in the folding direction, the rear foot pusher 231 rotates accordingly and pushes the rear foot pusher 222 downward. Conversely, during the folding process, the rear foot pusher 222 moves upward. The rear foot locking block 242 has a locking pin at the opening for entering the rear foot locking slot 221 to restrict rotation. A return spring and a return pusher are provided in the rear foot movable cavity 241. The return pusher interacts with the rear foot locking block 242. The mechanism includes a sloping structure. When the rear foot push block 222 pushes the rear foot lock block 242 back into the rear foot movable cavity 241, the rear foot lock block 242 pushes the reset push block into the rear foot movable cavity 241 and squeezes the reset spring. At this time, the rear foot joint is unlocked. To reset and lock, simply rotate it to its original position, and the reset spring pushes the reset push block to push the locking pin of the rear foot lock block 242 into the rear foot lock slot 221, thus completing the reset and locking of the rear foot joint 24.

[0040] The installation method of the seat assembly 1 and the frame assembly 2 is the prior art. For example, by disassembling the pivot of each joint, the pivot is removed from the pivot hole of the seat joint 11, installed in a different orientation, and then the pivot is put back into the pivot hole to reset. The specific method is not limited in this embodiment.

[0041] Seat assembly 1 includes a seat frame 13 and a backrest frame 14. Two seat joints 11 are symmetrically arranged on both sides of the seat frame 13. A railing joint 131 is rotatably mounted on the inner side of the seat frame 13 and the seat joint 11. The railing joint 131 and the seat joint 11 have aligned railing locking slots 132. A railing locking block 133 is movably installed within the railing locking slots 132. The backrest frame 14 includes a backrest joint 141 and a backrest locking block 142. The backrest joint 141 includes a rotating part 143 and a top 144. The rotating part 143 is rotatably mounted between the railing joint 131 and the seat joint 11. The top has an inwardly opening backrest movable cavity 145. The backrest locking block 142... 42 is movably installed in the backrest movable cavity 145 and engages with the seat joint 11. The backrest locking block 142 is connected to a pull rope. By pulling the pull rope, it is pulled back to the backrest movable cavity 145 to release the locking state with the seat joint 11. Fold and rotate the backrest frame 14. The rotating part 143 rotates on the seat joint 11. The rotating part 143 is provided with an upward pushing part 146 that engages with the seat locking block 12 and a downward pushing part 147 that engages with the railing locking block 133. The upward pushing part 146 pushes the seat locking block 12 downward and pushes the unlocking pusher 212. The downward pushing part 147 pushes the railing locking block 133 upward and exits the railing lock opening 132, releasing the locking state of the railing joint 131.

[0042] The backrest frame 14 is provided with a backrest connecting frame 148 that connects the two backrest joints 141. The backrest connecting frame 148 is a tubular structure and is inserted into the backrest joint 141. The backrest connecting frame 148 is provided with a control handle 149. The control handle 149 rotates on the backrest connecting frame 148 via a pivot and is connected to a pull rope. Rotating the control handle 149 pulls the pull rope to move and pull the backrest locking block 142. The backrest locking block 142 is provided with a return spring for pushing it to move downward and engage with the seat joint 11.

[0043] The fence locking block 133 is equipped with a return spring for pushing the fence locking block downwards into the fence locking slot 132.

[0044] A fence connecting frame 134 is connected between the two fence joints 131. The fence connecting frame 134 is a tubular structure and is fixed by screws.

[0045] A seat plate 15 is installed on the seat joint 11 by screws. The seat plate 15 is preferably an iron plate. The seat plate 15 has multiple slots that engage with the backrest locking block 142. The backrest locking block 142 enters the slot and restricts its rotation. Pulling the pull rope will disengage it from the slot.

[0046] The frame assembly 2 also includes a front foot 25 and a rear foot 26. The rear foot joint 24 is provided with a front foot mounting part 243 and a rear foot mounting part 244. The front foot mounting part 243 is provided with a front foot rotation port. The front foot 25 is provided with a front foot bracket 251 that is rotatably mounted on the front foot rotation port. After installation, it is fixed by screws. The rear foot 26 is provided with a rear foot bracket 261 that is inserted and mounted on the rear foot mounting part 244. After installation, it is fixed by screws. A folding frame 27 is rotatably mounted on the armrest joint 22. The folding frame 27 is provided with an upper connector 271, a front connector 272 and a rear connector 273. One end of the upper connector 271 is rotatably mounted on the armrest joint 22, and the other end is rotatably mounted on the front connector 272 and the rear connector 273. The front connector 272 is rotatably mounted on the front foot bracket 251, and the rear connector 273 is rotatably mounted on the rear foot bracket 261. The rotatable mounting method is preferably rotatable mounting by a pivot or a pin with a nut. This embodiment is not limited to this method.

[0047] The handrail joint 22 is provided with a handrail mounting part 223, and the handrail mounting part 223 is equipped with a telescopic tube 224. The preferred installation method is plug-in installation and screw locking. A handrail connecting frame 225 is provided between the two telescopic tubes 224.

[0048] The seat joint 11 is provided with a recessed part 16. The recessed part has a large recessed part 161 and a small recessed part 162 at the bottom. The bottom of the large recessed part 161 and the small recessed part 162 are at the same horizontal height, and the top has a certain drop. The drop distance is 1-3cm, which is not limited in this embodiment.

[0049] The inner joint portion 21 is provided with a protrusion 214 that engages with the recess 16. The protrusion 214 has an opening that communicates with the front and rear. A toothed ring connector 28 is movably installed in the opening of the inner joint portion 21. When the seat assembly 1 is installed in the forward direction, one end of the toothed ring connector 28 passes through the opening and abuts against the flange of the small recess 162, while the other end disengages from the toothed ring 23 and moves in the inner groove 232 within the toothed ring 23. The inner groove 232 is a recessed structure of the inner ring of the toothed ring, used to cooperate with the toothed ring connector 28, so that the toothed ring connector 28 moves in the inner groove 232. When the seat assembly 1 is installed in the reverse direction, one end of the toothed ring connector 28 passes through the opening and is embedded in the large recess 161, while the other end engages with the groove 233 of the inner groove 232 of the toothed ring 23. The toothed ring 23 and the inner joint portion 21 rotate synchronously.

[0050] The gear ring connector 28 includes a front push block 281, a middle adjustment block 282 and a rear locking block 283. The middle adjustment block 282 is provided with guide slopes that cooperate with the front push block 281 and the rear locking block 283 respectively. The front push block 281 is located in the opening and is provided with a stepped portion that cooperates with the large recess 161 or the small recess 162.

[0051] When the seat assembly 1 is installed facing forward, the stepped part abuts against the flange of the small recess 162, the front push block 281 retracts into the opening, the front push block 281 pushes the middle adjustment block 282 to move toward the rear locking block 283, the middle adjustment block 282 pushes the rear locking block 283 to move toward the inner joint 21 and disengage from the slot 233 of the toothed ring 23.

[0052] At this time, the inner joint 21 needs to rotate 109 degrees before it reconnects with the toothed ring 23, that is, it abuts against the end of the inner groove 232, and drives the toothed ring to continue rotating 18 degrees. Thus, at the 127-degree position, the toothed ring 23 cooperates with the rear foot push block 222 on the armrest joint 22, releasing the locked state between the armrest joint 22 and the rear foot joint 24.

[0053] When seat assembly 1 is installed in reverse, the step portion is embedded in the large recess 161, the front push block 281 moves toward the inward joint portion 21, the middle adjustment block 282 moves away from the rear locking block 283, and the rear locking block 283 moves toward the gear ring 23 and enters the locking groove 233 to engage with the gear ring 23.

[0054] At this time, the inner tube 21 and the gear ring 23 rotate synchronously. After rotating together by 30 degrees, the gear ring 23 cooperates with the rear foot push block 222 on the armrest joint 22 to release the locking state of the armrest joint 22 and the rear foot joint 24.

[0055] When the seat is installed facing forward, the child's seat is positioned in front of the frame assembly; conversely, it is installed facing backward.

[0056] refer to Figure 11 and Figure 12The specific folding principle is as follows: The user first folds the backrest frame 14 on the backrest joint 141 with one hand, folding the seat assembly 1. Folding the seat assembly 1 involves first rotating the control handle 149 to pull the pull rope, which pulls the backrest locking block 142 out of the seat panel 15, unlocking the backrest joint 141. By rotating the backrest joint 141, the downward pushing part 147 of the rotating part 143 of the backrest joint 141 pushes the railing locking block and the upward pushing part 146 to move the seat locking block 12, unlocking the seat joint 11 and the railing joint 131 respectively. Then, the backrest frame 14 and the seat frame 13 are folded together facing each other. After the seat assembly 1 is folded down, rotate the entire seat assembly 1 to bring it close to the armrest connecting frame. When the seat assembly 1 rotates toward the telescopic tube 224 of the armrest joint 22, the armrest joint 22 is unlocked. Then push the armrest connecting frame 225 and the seat assembly 1 to rotate backward together. At this time, due to the influence of gravity, the armrest connecting frame 225 and the seat assembly 1 automatically rotate downward. During the rotation, the inner joint 21, armrest joint 22, gear ring 23 and rear foot joint 24 are unlocked in sequence. The armrest connecting frame 225, front foot 25 and rear foot 26 fold towards each other and move closer together to complete the folding operation.

[0057] The folding frame 27 is rotatably mounted on the handrail joint 22. When the scooter is being retracted, the handrail joint 22 rotates and the folding frame 27 rotates, pushing the rear foot 26 and the front foot 25 toward each other.

[0058] In this embodiment, the rotational installation is preferably performed via a rotating shaft.

[0059] This embodiment enables the entire vehicle to be folded with one hand. The seat assembly 1 can be positioned facing forward or backward. In the unfolded state, by first folding the seat assembly 1, the seat locking block 12 is pressed down on the side opening 211 of the inner joint 21. At this time, the unlocking pusher 212 is pushed by the seat locking block 12 of the seat assembly 1 to move the armrest locking block 213, releasing the locking state between the inner joint 21 and the armrest joint 22. Continuing to rotate the seat assembly 1 drives the inner joint 21 and the gear ring 23 to rotate. The gear ring 23 pushes the rear foot push block to push the rear foot locking block out of the rear foot lock opening, releasing the locking state between the armrest joint 22 and the rear foot joint 24. At this time, all components of the vehicle are in the unlocked state. After folding the seat, when the seat assembly 1 is rotated in the folding direction, it drives each joint to unlock in sequence. Each joint rotates under the action of gravity and automatically folds. Unfolding only requires unfolding in sequence, reducing the difficulty of folding the vehicle, improving the folding efficiency, and making it more user-friendly.

[0060] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A reversible, self-folding stroller, characterized in that: The seat group is rotatably installed between the frame group, and is provided with a seat joint part, which is provided with a seat lock block. The frame group comprises an inner joint part, an armrest joint part, a gear ring and a rear leg joint part which are rotatably installed in sequence. The inner joint part is provided with a side opening on the left and right sides and an unlocking push piece on the inner side. Two armrest lock blocks for locking the armrest joint part are matched with the unlocking push piece. When the seat group is folded and the seat lock block pushes the unlocking push piece downwards, the unlocking push piece moves downwards and drives the armrest lock block to move, thereby releasing the locking state of the armrest joint part. The gear ring is sleeved on the armrest joint part and rotates synchronously with the inner joint part. The gear ring is provided with a rear leg pushing part on the inner side. The armrest joint part is provided with a rear leg lock opening towards the rear leg joint part, and a rear leg push block is movably installed in the rear leg lock opening. The rear leg joint part is provided with a rear leg movable cavity and an opening which is in alignment with the rear leg lock opening. A rear leg lock block is arranged in the rear leg movable cavity. The rear leg lock block is inserted into the rear leg lock opening through the opening, and the locking state is released by pushing the rear leg lock block out of the rear leg lock opening through the rear leg push block. The rear leg pushing part (231) and the rear leg push block (222) are provided with matching inclined surfaces. When the gear ring (23) rotates towards the folding direction, the rear leg pushing part (231) rotates and pushes the rear leg push block (222) to move downwards. The seat group comprises a seat frame and a backrest frame. The seat joint part is symmetrically arranged on the two sides of the seat frame. The seat frame is rotatably installed with a fence joint part on the inner side of the seat frame. The fence joint part and the seat joint part are provided with a fence lock opening in alignment. A fence lock block is movably installed in the fence lock opening. The backrest frame comprises a backrest joint part and a backrest lock block. The backrest joint part comprises a rotating part and a top part. The rotating part is rotatably installed between the fence joint part and the seat joint part. The top part is provided with a backrest movable cavity with an opening facing inwards. The backrest lock block is movably installed in the backrest movable cavity and is engaged with the seat joint part. The backrest lock block is connected with a pull rope. The locking state of the seat joint part is released by pulling the pull rope back into the backrest movable cavity. The backrest frame is folded and rotated. The rotating part is provided with an upper pushing part matched with the seat lock block and a lower pushing part matched with the fence lock block. The seat lock block is pushed downwards by the upper pushing part and the unlocking push piece is pushed. The fence lock block is pushed upwards by the lower pushing part and exits the fence lock opening, thereby releasing the locking state of the fence joint part. The seat joint part is provided with a recess, the recess is provided with a large recess and a small recess at the bottom, the inner joint part is provided with a protrusion matched with the recess, the protrusion is provided with an opening communicated with front and back, the inner joint part is movably provided with a gear ring connector at the opening, when the seat group is installed in the normal direction, one end of the gear ring connector passes through the opening and abuts against the flange of the small recess, the other end is disengaged from the gear ring and movably arranged in the inner groove of the gear ring, when the seat group is installed in the reverse direction, one end of the gear ring connector passes through the opening and is embedded in the large recess, the other end is matched with the clamping groove of the inner groove of the gear ring, the gear ring rotates synchronously with the inner joint part.

2. A reversible, self-folding stroller as in claim 1, wherein: The backrest frame is provided with a backrest connecting frame connected with two backrest joint parts, the backrest connecting frame is provided with a control handle, the control handle is connected with a pull rope, rotating the control handle pulls the pull rope to move, the backrest lock block is provided with a reset spring for pushing it to move downward and match with the seat joint part.

3. A reversible, self-folding stroller as in claim 1, wherein: The seat joint part is provided with a slot for installing a fence lock block, the fence lock block is provided with a reset spring for pushing the fence lock block to move downward and enter the fence slot.

4. A reversible, self-folding stroller as in claim 1, wherein: The two fence joint parts are connected with a fence connecting frame.

5. A reversible, self-folding stroller as in claim 2, wherein: The seat joint part is movably provided with a seat plate through a screw, the seat plate is provided with a plurality of clamping slots matched with the backrest lock block, the backrest lock block enters the clamping slot and is limited to rotate, pulling the pull rope makes it exit the clamping slot.

6. A reversible, self-folding stroller as in claim 1, wherein: The gear ring connector comprises a front pushing block, a middle adjusting block and a rear clamping block, the middle adjusting block is provided with a guide inclined surface matched with the front pushing block and the rear clamping block respectively, the front pushing block is arranged in the opening and is provided with a step matched with the large recess or the small recess; When the seat group is installed in the normal direction, the step abuts against the flange of the small recess, the front pushing block retreats into the opening, the front pushing block pushes the middle adjusting block to move toward the rear clamping block, the middle adjusting block pushes the rear clamping block to move toward the inner joint part and disengage from the clamping groove of the gear ring; When the seat group is installed in the reverse direction, the step is embedded in the large recess, the front pushing block moves toward the inner joint part, the middle adjusting block moves away from the rear clamping block, the rear clamping block moves toward the gear ring and enters the clamping groove to be matched with the gear ring.

7. A reversible, self-folding stroller as in claim 1, wherein: The frame group further comprises a front leg and a rear leg, the rear leg joint part is provided with a front frame mounting part and a rear frame mounting part, the front frame mounting part is provided with a front leg rotating opening, the front leg is provided with a front leg frame rotatably mounted in the front leg rotating opening, the rear leg is provided with a rear leg frame inserted and mounted with the rear frame mounting part, the armrest joint part is rotatably mounted with a folding frame, the folding frame is provided with an upper connecting piece, a front connecting piece and a rear connecting piece, one end of the upper connecting piece is rotatably mounted on the armrest joint part, the other end is rotatably mounted with the front connecting piece and the rear connecting piece, the front connecting piece is rotatably mounted with the front leg frame, and the rear connecting piece is rotatably mounted with the rear leg frame.

8. A reversible, self-folding stroller as in claim 1, wherein: The armrest joint part is provided with an armrest mounting part, the armrest mounting part is provided with telescopic pipes, the two telescopic pipes are connected with an armrest connecting frame.

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