A foldable baby stroller structure

Abstract

The utility model relates to the technical field of baby strollers, and in particular to an easily foldable baby stroller structure, wherein the folding assembly includes a slide tube, a rear support leg, a front support leg, a sliding sleeve slidably connected to the slide tube, and a side baffle with one end hinged to the slide tube; a seat frame and a backrest frame are arranged between two folding assemblies; a rotating seat and a rear leg connecting seat are fixed to the rear support leg; one end of the slide tube is hinged to the rear support leg through the rear leg connecting seat; a connecting rod connecting seat is fixed to the end of the slide tube; the side surface of the seat frame is hinged to the front support leg; the connecting rod is hinged to the seat frame; and a locking switch for locking the sliding sleeve to the slide tube is arranged inside the slide tube. When the utility model is used, the structure can realize the linkage of the slide tube, the side baffle, the seat frame, the front support leg and the backrest frame after the sliding sleeve slides relative to the slide tube, and all of them are synchronously close to and folded in the direction of the rear support leg, thereby improving the efficiency of folding the baby stroller and making it more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of baby carriages, in particular to an easily foldable baby carriage structure. Background Art

[0002] A baby stroller is a tool vehicle designed to facilitate outdoor activities for babies. It is easy to use and is a product for taking babies out. A baby stroller generally consists of a frame connected to wheels and a backrest for babies to lie down and sleep. It is mainly used to support the baby's seat frame and armrests. The seat frame and backrest are covered with cloth, and the baby sits or lies in the bed structure formed by the seat frame and backrest.

[0003] In the structure of a baby stroller, the backrest, the seat frame, and the front and rear frames can all be folded together for easy carrying or storage. However, in existing baby strollers, the backrest, the seat frame, and the frame are connected by a hinged structure, so when folding the baby stroller, the backrest, the seat frame, and the frame need to be folded one by one toward the armrest, which makes folding the baby stroller inconvenient and inefficient. Utility Model Content

[0004] The utility model aims to provide a foldable baby carriage structure in view of the defects and shortcomings of the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model discloses an easily foldable baby stroller structure, which comprises two folding components parallel to each other; the folding components comprise a slide tube, a rear support leg, a front support leg, a sliding sleeve slidably connected to the slide tube and a side guard bar with one end hinged to the sliding sleeve; a seat frame and a backrest frame are arranged between the two folding components; a rotating seat and a rear leg connecting seat are fixed to the rear support leg; the other end of the side guard bar and one end of the support leg are rotatably connected to the front support leg through a rotating seat; one end of the slide tube is hinged to the rear support leg through the rear leg connecting seat; a connecting rod connecting seat is fixed to the end of the slide tube; the two ends of the backrest frame are respectively fixed to the two connecting rod connecting seats; wheels are arranged on the other end of the support leg and the rear support leg;

[0007] The side surface of the seat frame is hinged on the front supporting leg; a connecting rod is fixed on the connecting rod connecting seat; the connecting rod is hinged on the seat frame; and a locking switch for locking the sliding sleeve on the sliding tube is arranged inside the sliding tube.

[0008] Furthermore, the locking switch includes a sliding seat fixed in the sliding tube, a sliding bar slidably connected to the sliding seat, and a locking pin slidably connected to the sliding bar; a card slot is provided on the sliding sleeve; a sliding column is fixed on the locking pin; a wedge-shaped hole is provided on the sliding bar; the side surface of the sliding column is pressed against the side wall of the wedge-shaped hole; a spring is connected between the sliding bar and the locking pin; and the end of the locking pin is inserted into the card slot.

[0009] Furthermore, a rotating joint is connected to the sliding tube; the rotating joint includes a lower fixed seat with one end fixed on the sliding tube and an upper rotating seat rotatably connected to the lower fixed seat; a second steel cable is connected between the eccentric position of the upper rotating seat and the slide bar.

[0010] Furthermore, the position where the sliding tube is connected to the rotating seat is the sliding tube connection point; the position where the rear supporting leg is connected to the rotating seat is the leg seat connection point; the center of gravity of the sliding tube and the leg seat connection point are respectively arranged on both sides of the sliding tube connection point; the center of gravity of the sliding tube connection point and the sliding tube are not in the same vertical direction.

[0011] Furthermore, an armrest is connected between the two rotating seats; insertion strips are provided at both ends of the armrest; an insertion strip groove slidably connected to the insertion strip is provided on the rotating seat; a clamping block is provided inside the insertion strip groove; a through hole is provided on the insertion strip; an elastic clamping plate is provided in the through hole; a clamping hook is provided at the end of the elastic clamping plate; after the insertion strip is inserted into the insertion strip groove, the elastic clamping plate is clamped and fixed on the clamping block.

[0012] After adopting the above structure, the beneficial effects of the utility model are as follows: the foldable baby carriage structure described in the utility model, when using the utility model, the rotating seat is a shell plus a rotating shaft structure, and the rotating shaft passes through the side baffles, the rear support legs and the support legs to form a rotating connection between the three; after the locking switch locks the sliding sleeve on the sliding tube, the side baffles, the rear support legs in a section between the sliding tube and the side baffles and the sliding tube in a section between the rear support legs and the sliding sleeve form a fixed triangular support structure, so that the baffles and the rear support legs cannot rotate around the rotating seat. The sliding tube and the connecting rod connecting seat cannot rotate around the rear leg connecting seat, so the seat frame, the connecting rod and the backrest frame cannot rotate either, and the support of the seat frame to the front support legs prevents the front support legs from rotating around the rotating seat, forming a baby carriage in use. When the locking switch releases the sliding sleeve, the sliding sleeve can slide freely on the sliding tube, and the sliding tube can flip around the rear leg connecting seat to one side of the rear supporting leg. During the flipping process of the sliding tube, the sliding sleeve slides relative to the sliding tube, which is equivalent to driving the side stopper to rotate relative to the sliding tube around the rotating seat, and the side stopper also flips around the rotating seat to the rear supporting leg for storage; while the sliding tube rotates relative to the rear leg connecting seat of the rear supporting leg, it drives the connecting rod connecting seat to rotate, so that the connecting rod and the backrest frame rotate around the rear leg connecting seat, and the backrest frame folds in the direction of the rear supporting leg, and the rotation of the connecting rod drives one end of the seat frame to move, and the seat frame as a whole flips toward the rear supporting leg. While the seat frame moves, it pushes the front supporting leg to fold in the direction of the rear supporting leg; similarly, the opening process of the baby stroller is the reverse movement of the folding process of the baby stroller. The structure can realize the linkage of the sliding tube, the side guard bar, the seat frame, the front supporting leg and the backrest frame after the sliding sleeve slides relative to the sliding tube, and they all move toward the direction of the rear supporting leg and fold synchronously, thereby improving the folding efficiency of the baby stroller and making it more convenient to use. In addition to serving as a connection, the side guard bar can also be used as a side guardrail of the baby stroller. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the utility model;

[0014] Figure 2 It is a three-dimensional diagram of the utility model;

[0015] Figure 3 It is a state diagram of the utility model during the folding process;

[0016] Figure 4 It is a structural diagram of the rear leg connecting seat, the connecting rod connecting seat and the connecting rod connection;

[0017] Figure 5 This is a first-person exploded view of the connection between the rotating joint and the locking switch;

[0018] Figure 6 It is a second-view exploded view of the connection between the rotating joint and the locking switch;

[0019] Figure 7This is an exploded view of the locking switch;

[0020] Figure 8 This is a first-person exploded view of the connection between the armrest and the rotating seat;

[0021] Fig. 9 This is a second-angle exploded view of the connection between the armrest and the rotating seat;

[0022] Description of reference numerals:

[0023] 1. Handle bar; 2. Rotating joint; 201. Upper rotating seat; 202. Cam member;

[0024] 203, gear; 204, lower fixed seat; 3, sliding tube; 4, sliding sleeve; 401, slot;

[0025] 5. side guard bar; 6. rear support leg; 601. rotating seat; 601a. ​​inserting slot; 601b. clamping block;

[0026] 602, rear leg connecting seat; 7, armrest; 701, insert; 701a, elastic card plate; 701b, hook;

[0027] 8. Seat frame; 9. Front support legs; 10. Wheels; 11. Connecting rod seat; 12. Backrest frame;

[0028] 13. Connecting rod; A. Control switch; B. First steel cable; C. Second steel cable; D. Locking switch;

[0029] D1, slide seat; D101, slide guide groove; D102, strip hole; D2, slide;

[0030] D201, wedge-shaped hole; D3, locking pin; D301, sliding column. DETAILED DESCRIPTION

[0031] The utility model is further described below in conjunction with the accompanying drawings.

[0032] like Figure 1As shown in Figure 9, the utility model is an easily foldable baby stroller structure, which includes two folding components parallel to each other; the folding component includes a slide tube 3, a rear support leg 6, a front support leg 9, a sliding sleeve 4 slidably connected to the slide tube 3 and a side guard bar 5 with one end hinged to the sliding sleeve 4; a seat frame 8 and a backrest frame 12 are arranged between the two folding components; a rotating seat 601 and a rear leg connecting seat 602 are fixed to the rear support leg 6; the other end of the side guard bar 5 and one end of the support leg 9 are rotatably connected to the front support leg 9 through the rotating seat 601; one end of the slide tube 3 is hinged to the rear support leg 6 through the rear leg connecting seat 602; a connecting rod connecting seat 11 is fixed to the end of the slide tube 3; the two ends of the backrest frame 12 are respectively fixed to the two connecting rod connecting seats 11; wheels 10 are arranged on the other end of the support leg 9 and the rear support leg 6;

[0033] The side surface of the seat frame 8 is hinged on the front supporting leg 9; a connecting rod 13 is fixed on the connecting rod connecting seat 11; the connecting rod 13 is hinged on the seat frame 8; a locking switch D for locking the sliding sleeve 4 on the sliding tube 3 is provided inside the sliding tube 3.

[0034] The rotating seat 601 is a shell plus a rotating shaft structure, and the rotating shaft passes through the side guard bar 5, the rear support leg 6 and the support leg 9 so that the three are connected in a rotating manner; after the locking switch D locks the sliding sleeve 4 on the sliding tube 3, the side guard bar 5 and the rear support leg 6 form a fixed triangular support structure between the sliding tube 3 and the side guard bar 5 and the sliding tube 3 between the rear support leg 6 and the sliding sleeve 4, so that the guard bar 5 and the rear support leg 6 cannot rotate around the rotating seat 601. The sliding tube 3 and the connecting rod connecting seat 11 cannot rotate around the rear leg connecting seat 602, so the seat frame 8, the connecting rod 13 and the backrest frame 12 cannot rotate either. The support of the seat frame 8 to the front support leg 9 prevents the front support leg 9 from rotating around the rotating seat 601, forming a baby carriage in use.

[0035] When the locking switch D releases the sliding sleeve 4, the sliding sleeve 4 can slide freely on the sliding tube 3, and the sliding tube 3 can flip around the rear leg connecting seat 602 to the side of the rear supporting leg 6. During the flipping process of the sliding tube 3, the sliding sleeve 4 slides relative to the sliding tube 3, which is equivalent to driving the side guard bar 5 to rotate relative to the sliding tube 3 around the rotating seat 601, and the side guard bar 5 also flips around the rotating seat 601 to be stored toward the rear supporting leg 6; while the sliding tube 3 rotates relative to the rear leg connecting seat 602 of the rear supporting leg 6, it drives the connecting rod connecting seat 11 to rotate, so that the connecting rod 13 and the backrest frame 12 rotate around the rear leg connecting seat 602, and the backrest frame 12 folds toward the direction of the rear supporting leg 6, and the rotation of the connecting rod 13 drives one end of the seat frame 8 to move, and the seat frame 8 flips as a whole toward the rear supporting leg 6. While the seat frame 8 moves, it pushes the front supporting leg 9 to fold toward the direction of the rear supporting leg 6; similarly, the opening process of the baby stroller is the reverse movement of the folding process of the baby stroller.

[0036] This structure can realize the linkage of the sliding tube 3, the side guard bar 5, the seat frame 8, the front support leg 9 and the backrest frame 12 after the sliding sleeve 4 slides relative to the sliding tube 3, and they all move synchronously toward the direction of the rear support leg 6 and fold, thereby improving the folding efficiency of the baby stroller and making it more convenient to use. In addition to serving as a connection, the side guard bar 5 can also be used as a side guardrail of the baby stroller.

[0037] As a preferred embodiment of the present invention, the locking switch D comprises a sliding seat D1 fixed in a sliding tube 3, a sliding bar D2 slidably connected to the sliding seat D1, and a locking pin D3 slidably connected to the sliding bar D2; a card slot 401 is provided on the sliding sleeve 4; a sliding column D301 is fixed on the locking pin D3; a wedge-shaped hole D201 is provided on the sliding bar D2; the side surface of the sliding column D301 is pressed against the side wall of the wedge-shaped hole D201; a spring is connected between the sliding bar D2 and the locking pin D3; the end of the locking pin D3 is inserted into the card slot 401; a spring is provided on the sliding seat D1 to engage with the sliding bar D2; 2 is connected to the slide guide groove D101, and the slide seat D1 is provided with a strip hole D102, which is used to guide the sliding column D301; in normal state, the spring is in a compressed state, and the lock pin D3 is inserted into the slot 401, so that the entire locking switch D and the slide tube 3 are fixed to the sliding sleeve 4, and the sliding sleeve 4 cannot slide relative to the slide tube 3; when the slide D2 is pulled, the inner wall of the wedge hole D201 pushes the sliding column D301 to overcome the resistance of the spring, so that the lock pin D3 is pulled out of the slot 401; when the pulling force of the slide D2 is removed, the thrust of the spring pushes the lock pin D3 outward.

[0038] As a preferred embodiment of the utility model, the sliding tube 3 is connected with a rotating joint 2; the rotating joint 2 includes a lower fixed seat 204 with one end fixed on the sliding tube 3 and an upper rotating seat 201 rotatably connected to the lower fixed seat 204; a second steel cable C is connected between the eccentric position of the upper rotating seat 201 and the slide bar D2; the upper rotating seat 201 can rotate around the lower fixed seat 204, and after the upper rotating seat 201 rotates, one end of the second steel cable C will be rolled up and pulled by the upper rotating seat 201, which can drive the slide bar D2 to slide. A cam member 202 and a gear 203 are provided between the upper rotating seat 201 and the lower fixed seat 204; the gear 203 is slidably connected to the lower fixed seat 204; the cam member 202 is rotatably connected to the lower fixed seat 204; a wedge-shaped surface is provided on the cam member 202, and a wedge block used in pair with the wedge surface is provided on the upper rotating seat 201;

[0039] The upper rotating seat 201 and the lower fixed seat 204 are provided with tooth grooves matching the gear 203; and an elastic member is connected between the gear 203 and the lower fixed seat 204, which can push the gear 203 out and get it stuck on the tooth grooves of the upper rotating seat 201 and the tooth grooves of the lower fixed seat 204, so that the upper rotating seat 201 and the lower fixed seat 204 cannot rotate relative to each other; but the rotation of the cam member 202 causes the wedge block to push the wedge surface, and the cam member 202 pushes the gear 203 to slide until the entire gear 203 is pushed into the tooth groove of the lower fixed seat 204, so that the gear 203 is not stuck in the tooth groove of the upper rotating seat 201. In this way, the upper rotating seat 201 can rotate relative to the lower fixed seat 204; after the upper rotating seat 201 is reset, the elastic member pushes out the gear 203, and the gear 203 is re-engaged in the tooth grooves of the upper rotating seat 201 and the lower fixed seat 204; in actual application, a U-shaped handlebar 1 is connected between the two upper rotating seats 201; a control switch A is provided on the handlebar 1, and the control switch A has no essential difference from the prior art, so it is not described in detail. The control switch A is a push-button, which is connected to a first steel cable B. After the button is pressed, the first steel cable B is pulled, and the first steel cable B pulls the cam member 202 to rotate on the lower fixed seat 204.

[0040] As a preferred embodiment of the present invention, the position where the slide tube 3 is connected to the rotating seat 601 is the slide tube connection point; the position where the rear support leg 6 is connected to the rotating seat 601 is the leg seat connection point; the center of gravity of the slide tube 3 and the leg seat connection point are respectively arranged on both sides of the slide tube connection point; the center of gravity of the slide tube connection point and the slide tube 3 are not in the same vertical direction;

[0041] After releasing the locking switch D, the slide tube 3 automatically turns downward around the slide tube connection point due to its own gravity. Therefore, during the folding process, the self-built gravity of the slide tube 3 is used to continuously provide power for folding, so that the baby stroller can be automatically folded, which makes folding more convenient. In addition, the center of gravity of the slide tube 3 is set on the side away from the slide tube connection point, so that the moment of turning the slide tube 3 is larger.

[0042] As a preferred embodiment of the present invention, an armrest 7 is connected between two rotating seats 601; both ends of the armrest 7 are provided with an insertion strip 701; the rotating seat 601 is provided with an insertion strip groove 601a which is slidably connected to the insertion strip 701; a clamping block 601b is provided inside the insertion strip groove 601a; a through hole is provided on the insertion strip 701; an elastic clamping plate 701a is provided in the through hole; a clamping hook 701b is provided at the end of the elastic clamping plate 701a; after the insertion strip 701 is inserted into the insertion strip groove 601a, the elastic clamping plate 701a is buckled and fixed on the clamping block 601b; the middle part of the elastic clamping plate 701a is rotatably connected to the insertion strip 701, and a compression spring is provided between the elastic clamping plate 701a and the insertion strip 701;

[0043] When the elastic clamping plate 701a is pressed without external force, the compression spring makes the elastic clamping plate 701a elastically return to its original position, and the hook 701b is buckled and fixed on the clamping block 601b so that the inserting strip 701 is fixed on the rotating seat 601;

[0044] After pressing the elastic clamp 701a, the elastic clamp 701a can be turned over near the hook 701b, and the hook 701b is misaligned with the clamp block 601b, so that the insertion strip 701 can be pulled out from the insertion strip groove 601a, which facilitates the disassembly and assembly of the armrest 7 and the rotating seat 601.

[0045] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A foldable baby stroller structure, characterized in that: It comprises two folding components parallel to each other; the folding components comprise a sliding tube (3), a rear supporting leg (6), a front supporting leg (9), a sliding sleeve (4) slidably connected to the sliding tube (3), and a side baffle (5) one end of which is hinged to the sliding sleeve (4); a seat frame (8) and a backrest frame (12) are arranged between the two folding components; a rotating seat (601) and a rear leg connecting seat (602) are fixed to the rear supporting leg (6); the other end of the side baffle (5) and one end of the supporting leg (9) are rotatably connected to the front supporting leg (9) through the rotating seat (601); one end of the sliding tube (3) is hinged to the rear supporting leg (6) through the rear leg connecting seat (602); a connecting rod connecting seat (11) is fixed to the end of the sliding tube (3); the two ends of the backrest frame (12) are respectively fixed to the two connecting rod connecting seats (11); the other end of the supporting leg (9) and the rear supporting leg (6) are both provided with wheels (10); The side surface of the seat frame (8) is hinged on the front supporting leg (9); a connecting rod (13) is fixed on the connecting rod connecting seat (11); the connecting rod (13) is hinged on the seat frame (8); and a locking switch (D) for locking the sliding sleeve (4) on the sliding tube (3) is provided inside the sliding tube (3).

2. The foldable baby stroller structure according to claim 1, characterized in that: The locking switch (D) comprises a sliding seat (D1) fixed in a sliding tube (3), a sliding bar (D2) slidably connected to the sliding seat (D1), and a locking pin (D3) slidably connected to the sliding bar (D2); a slot (401) is provided on the sliding sleeve (4); a sliding column (D301) is fixed on the locking pin (D3); a wedge-shaped hole (D201) is provided on the sliding bar (D2); a side surface of the sliding column (D301) is pressed against a side wall of the wedge-shaped hole (D201); a spring is connected between the sliding bar (D2) and the locking pin (D3); and a tip of the locking pin (D3) is inserted into the slot (401).

3. The foldable baby stroller structure according to claim 2, characterized in that: The sliding tube (3) is connected to a rotating joint (2); the rotating joint (2) comprises a lower fixed seat (204) having one end fixed to the sliding tube (3) and an upper rotating seat (201) rotatably connected to the lower fixed seat (204); a second steel cable (C) is connected between an eccentric position of the upper rotating seat (201) and the sliding bar (D2).

4. The easily foldable baby stroller structure according to claim 1, characterized in that: The position where the slide tube (3) is connected to the rotating seat (601) is the slide tube connection point; the position where the rear supporting leg (6) is connected to the rotating seat (601) is the leg seat connection point; the center of gravity of the slide tube (3) and the leg seat connection point are respectively arranged on both sides of the slide tube connection point; the slide tube connection point and the center of gravity of the slide tube (3) are not in the same vertical direction.

5. The easily foldable baby stroller structure according to claim 1, characterized in that: An armrest (7) is connected between the two rotating seats (601); both ends of the armrest (7) are provided with an insertion strip (701); the rotating seat (601) is provided with an insertion strip groove (601a) slidably connected to the insertion strip (701); a clamping block (601b) is provided inside the insertion strip groove (601a); a through hole is provided on the insertion strip (701); an elastic clamping plate (701a) is provided inside the through hole; a clamping hook (701b) is provided at the end of the elastic clamping plate (701a); after the insertion strip (701) is inserted into the insertion strip groove (601a), the elastic clamping plate (701a) is clamped and fixed on the clamping block (601b).

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