CN221293738U - Seat and awning frame integrated hinge folding device of baby carriage - Google Patents

Abstract

The utility model discloses a seat and awning frame integrated hinge folding device of a baby carriage, wherein the upper parts of a left front foot rod and a right front foot rod of the baby carriage are respectively fixedly connected with a corresponding left base and a corresponding right base, and are respectively correspondingly provided with a left hinge joint lock and a right hinge joint lock; the awning frame, the seat plate and the left folding hinge joint lock and the right folding hinge joint lock can be hinged and are controlled to be locked and unlocked through the left folding hinge joint lock and the right folding hinge joint lock; after the inner locking mechanisms of the left folding hinge joint lock and the right folding hinge joint lock are unlocked, the tent frame and the seat plate can be simultaneously turned over, hinged and folded from top to bottom and then arranged in the space between the left front foot rod and the right front foot rod; after the awning frame and the seat plate are turned over from bottom to top and unfolded in place, the inner locking mechanisms of the left folding hinge joint lock and the right folding hinge joint lock the seat plate and the awning frame; the space between left front foot pole, the right front foot pole has been utilized to this product accomodates the canopy frame, seat board in order to compress folding volume, rational utilization space.

Description

Seat and awning frame integrated hinge folding device of baby carriage

Technical Field

The utility model relates to a part for a baby carriage, in particular to a seat and awning frame integrated hinge folding device for the baby carriage.

Background

1. Chinese patent literature publication No.: CN215361510U discloses including transition frame, pushing away the handle frame, rear wheel subassembly, front wheel subassembly, joint of bending, receipts close the joint and be used for locking or unblock the locking device of joint of bending, it includes the joint seat one that connects in the transition frame, connect in rear wheel subassembly and with joint seat rotation connection's joint seat two, connect in front wheel subassembly and with joint seat two rotation connection's joint seat three and the seat frame of being connected between joint seat one, joint seat two and joint seat three in a folding way, locking device locks or unblock joint seat one and joint seat two through the joint of bending. The bending joint further comprises a sail frame seat connected to the joint seat IV and a sail frame connected with the sail frame seat in a rotating mode, an arc-shaped groove IV is formed in one side, close to the joint seat IV, of the sail frame seat, a limiting block III is arranged on one side, close to the sail frame seat, of the joint seat IV, and the limiting block III is arranged in the arc-shaped groove IV in a sliding mode. According to the utility model, the seat frame is matched with the first joint seat, so that the first joint seat, the second joint seat and the third joint seat are folded, a separate seat frame folding structure is not required to be additionally arranged, a locking mechanism is additionally arranged, the quick folding of the bending joint and the folding joint is realized, the folding joint and the seat frame are simple in structure, and the weight of the baby carriage is reduced.

The sail frame is arranged on a bending joint, and is required to be singly turned, stored and folded when being folded; the seat frame can only be turned over and folded, but not turned over and folded forward when being turned over and folded backwards through the transition frame; the sail frame and the seat frame are arranged separately and cannot be turned over and folded in a linkage way; when the transition frame and the pushing handle frame are not folded, the seat frame cannot be turned and folded independently in advance, and the seat frame cannot be arranged in a standing mode after the whole vehicle is folded, so that the seat frame is not convenient to use, and the folding process is troublesome.

2. Chinese patent literature publication No.: CN214493056U, discloses a stroller comprising:

a front support leg extending along a first direction, wherein the head end of the front support leg is provided with a front wheel;

The tail end of the rear support leg far away from the rear wheel is rotationally connected with the front support leg;

the rear leg having a folded position in which the front wheel is coincident with the rear wheel;

The push rod extends along the first direction, and can be movably arranged on the front supporting leg along the first direction so as to be close to or far away from the front supporting leg, the head end of the push rod, which is close to the front supporting leg, is movably connected with the middle part of the rear supporting leg, and when the push rod moves towards the direction, which is close to the front supporting leg, the push rod can drive the rear supporting leg to rotate to the folding position.

The mounting seat is hinged to the front supporting leg, a seat is arranged on the upper side of the mounting seat, and a matching part is arranged on the mounting seat;

The locking part is movably arranged on the mounting seat and is provided with a locking position and a free position, when the locking part is in the locking position, the locking part is matched with the matching part to limit the rotation of the mounting seat, and when the locking part is in the free position, the locking part is separated from the matching part, so that the mounting seat can rotate around the hinge joint of the mounting seat and the front support leg; wherein one end of the locking part away from the matching part is connected with the rear support leg so that the locking part is pushed to the free position when the rear support leg is in the folded position, and the locking part is pushed to the locking position when the rear support leg rotates to leave the folded position;

the chair canopy is arranged above the seat, and the chair canopy is arranged on the push rod.

The seat is hinged through the mounting seat, and the mounting seat is locked and unlocked through the operation locking part, so that the folding of the seat can be controlled; the chair tent and the chair are arranged separately, are respectively operated to fold and unfold, cannot be continuously folded, have low folding efficiency, and cannot simultaneously utilize the space between the front support legs to store and compress the volume.

Disclosure of utility model

In order to solve the technical problems, the utility model provides the seat and tent frame integrated hinge folding device of the baby carriage, which has reasonable structure, is convenient to fold and store the seat and the tent frame in an integrated linkage way, and improves the folding efficiency of the seat and the tent frame.

The scheme for solving the technical problems is as follows:

The seat and awning frame integrated hinge folding device of the baby carriage comprises a left front foot rod, a front lower cross beam, a right front foot rod, a left base, a right base, an awning frame and a seat plate, wherein the left front foot rod, the front lower cross beam, the right front foot rod, the left base, the right base, the awning frame and the seat plate are inclined backwards; the right base is connected with a right folding articulated joint lock; the method is characterized in that: the tent frame and the seat plate are locked and unlocked through the left folding hinge joint lock and the right folding hinge joint lock; a seat plate is connected between the left folding articulated joint lock and the right folding articulated joint lock in an articulated manner; a tent frame is connected between the left folding articulated joint lock and the right folding articulated joint lock in an articulated manner; after the inner locking mechanisms of the left folding hinge joint lock and the right folding hinge joint lock are unlocked, the tent frame and the seat plate can be simultaneously turned over, hinged and folded from top to bottom, and the tent frame and the seat plate are obliquely arranged in the same direction with the left front foot rod and the right front foot rod after being hinged and folded; after the awning frame and the seat plate are turned from bottom to top and unfolded in place, the inner locking mechanisms of the left folding hinge joint lock and the right folding hinge joint lock the seat plate and the awning frame, the seat plate is arranged in a flat mode, people can sit, and the awning frame is turned to the upper portion of the seat plate.

The seat and awning frame integrated hinge folding device of the baby carriage has the beneficial effects that: the awning frame and the seat plate of the product are locked and unlocked through the left folding hinge joint lock and the right folding hinge joint lock; the unlocked tent frame and seat plate can be simultaneously turned over, hinged and folded from top to bottom, and the tent frame and the seat plate are obliquely arranged in the same direction with the left front foot rod and the right front foot rod after being hinged and folded, so that the space between the left front foot rod and the right front foot rod is utilized for accommodating the tent frame and the seat plate to compress the folding volume, the space is reasonably utilized, the tent frame and the seat plate compress the space, the packing volume is compressed, the whole tent frame and seat plate can be conveniently accommodated, and the whole tent frame and seat plate can be folded without disassembling and packing; the tent frame and the seat plate can be folded and unfolded in a linkage manner, so that the folding and unfolding efficiency is improved.

Drawings

FIGS. 1 and 2 are perspective views of the product of the present utility model in an expanded state;

FIG. 3 is a side view of the product of the present utility model in an expanded state;

FIG. 4 is a perspective view of the product of the present utility model in a folded condition with the rear foot rest being moved toward the front foot rest;

Fig. 5 and 6 are perspective views showing the product of the utility model, wherein the rear foot rest is folded towards the front foot rest, and the tent frame and the seat plate are turned downwards;

FIG. 7 is a perspective view showing a folded state in which a rear leg frame is folded toward a front leg frame, a canopy frame and a seat plate are folded in a downward flipped manner, and an upward pushing frame is folded in a contracted manner;

FIG. 8 is a perspective view of the connection of the product canopy frame, seat pan, left folding articulation lock, right folding articulation lock of the present utility model;

FIG. 9 is a view showing the product of the present utility model with the footrest hinged upside down relative to the seat plate;

FIG. 10 is a diagram showing the state of the left convex locking post of the product locked by the left clamping notch;

FIG. 11 is a view showing the state that the right convex lock column of the product of the utility model is clamped in the right clamping notch for locking;

FIG. 12 is a disassembled view of the left mounting attachment member of the product of the present utility model shown separated from the first left rotating ring member;

FIG. 13 is a disassembled view of the right mounting connection member of the product of the present utility model shown separated from the first right rotating ring member;

Fig. 14, 15, 16 and 17 are exploded views of the left folding articulation lock, right folding articulation lock and seat plate of the present utility model;

FIG. 18 is a perspective view of a second left locking component of the product of the present utility model;

FIG. 19 is a perspective view of a second right locking feature of the product of the present utility model;

FIG. 20 is a perspective view of the right mounting attachment member of the product of the present utility model;

Fig. 21 is a perspective view of a left mounting attachment member of the product of the present utility model.

Left front foot bar 1, front lower cross member 2, stand 21, right front foot bar 3, left base 4, left foot hole 4A, left foot hole 41, right base 5, right foot hole 51, right foot hole 5A, canopy frame 6, unlocking piece 61, wire rope assembly 62, seat plate 7, left bracket plate 71, left metal reinforcement pad 711, left end panel cover 712, seat plate 72, right bracket plate 73, right metal reinforcement pad 731, right end panel cover 732, seat belt threading hole 74, foot rest 7A, guardrail 7B, front caster 8, push-up frame 9, rear caster 10, rear caster 11, left folding hinge joint lock a, left mounting connection part A1, first left locking and unlocking device A2, first left locking stage a21, first left rotating ring part a22, first left ring through hole a221, left hole ring piece a222, left high inner boss a223, first left connecting handle a23, first left handle through hole a231, first left locking part a24 the first left connecting piece A241, the first left transverse convex column A242, the first left pressure spring A25, the first left reinforced metal ring gasket A26, the second left pressure spring A27, the second left locking and unlocking device A3, the second left locking part A31, the left vertical strip through hole A311, the left convex column A312, the left groove A313, the left inclined outer side wall A314, the left strip arc through hole A33, the left clamping notch A34, the left core shaft nail A4, the right folding hinged joint lock B, the right mounting connecting part B1, the first right locking and unlocking device B2, the first right locking stage B21, the first right rotating ring part B22, the first right ring through hole B221, the right hole ring part B222, the right high inner convex unlocking part B223, the first right connecting handle B23, the first right handle through hole B231, the first right locking part B24, the first connecting piece B241, the first right transverse convex column B242, the first right pressure spring B25, the first reinforced metal ring gasket B26, the second right pressure spring B27, the second right locking and unlocking device B3, the second right locking component B31, the right vertical strip through hole B311, the right convex locking column B312, the right groove B313, the right inclined outer side wall B314, the right strip arc through hole B33, the right clamping notch B34 and the right mandrel nail B4.

Detailed Description

The seat and awning frame integrated hinged folding device of the baby carriage comprises a left front foot rod 1 which is inclined backwards, a front lower cross beam 2, a right front foot rod 3 which is inclined backwards, a left base 4, a right base 5, an awning frame 6 and a seat plate 7; the left front foot bar 1 and the right front foot bar 3 are made of aluminum, so that the weight is light; the front lower cross beam 2 is made of aluminum or plastic; the left base 4, the right base 5, the awning frame 6 and the seat plate 7 are made of plastic or composite of metal and plastic; the awning frame 6 can be arranged above or behind the seat plate 7 in a turnover way, and the awning frame 6 is used for installing an awning; the pedal frame 7A is hinged to the front lower side of the seat plate 7, the pedal frame 7A can be turned over and adjusted to a required angle relative to the seat plate 7, so that the baby can conveniently put feet for use, and when the baby carriage is folded, the pedal frame 7A is turned over to be arranged in the same direction as the seat plate 7 to compress and utilize space, so that the baby carriage is convenient to fold and store; The bottoms of the left front foot rod 1 and the right front foot rod 3 are fixedly connected with a front lower cross beam 2 through screw assemblies, and the front lower cross beam 2 is made of plastics or metals; the bottoms of the left corner and the right corner of the front lower cross beam 2 are both movably connected with front casters 8; the left front foot bar 1, the front lower cross beam 2 and the right front foot bar 3 form a front foot rest; a standing frame 21 is fixedly connected with the middle of the front lower cross beam 2; the tops of the left front foot rod 1 and the right front foot rod 3 are connected with an upward pushing frame 9 together, and the upward pushing frame 9 can be folded in a telescopic way and is used for pushing the baby carriage; rear foot rests 10 are hinged at the rear bottoms of the left base 4 and the right base 5, rear casters 11 are movably connected to the outer sides of the left bottom and the right bottom of the rear foot rest 10, and the rear foot rest 10 can be hinged and folded relative to the front foot rest; After the rear foot rest 10 is turned, hinged and folded towards the front foot rest, the front foot rest and the rear foot rest 10 form three supporting points through the two front casters 8 and the standing frame 21 after being synchronous and vertical, so that the baby carriage can stand and be fixedly placed, the baby carriage does not need to be laid on the ground to be dirtied, meanwhile, the storage space is reduced, the next unfolding and use are convenient, and in addition, more storage space can be compressed after the tent frame 6, the seat plate 7 and the push-up frame 9 are folded, so that the packing volume is compressed, and the baby carriage is convenient to carry and transport; the upper parts or the tops of the left front foot rod 1 and the right front foot rod 3 are respectively and transversely fixedly connected with a corresponding left base 4 and a right base 5 by screw assemblies, namely: the left base 4 and the right base 5 are respectively provided with a left penetrating rod hole 41 and a right penetrating rod hole 51 which correspond to each other, the upper parts of the left front foot rod 1 and the right front foot rod 3 just can penetrate through the left penetrating rod hole 41 and the right penetrating rod hole 51, and after penetrating, the left front foot rod 1 and the right front foot rod 3 are respectively and integrally transversely screwed/riveted through screw components for fixed connection; The left base 4 is connected with a left folding articulated joint lock A, and the left base 4 plays a role in fixing the left folding articulated joint lock A; the right base 5 is connected with a right folding articulated joint lock B, and the right base 5 plays a role in fixing the right folding articulated joint lock B; the main technical improvement of the product is as follows: the tent frame 6 and the seat plate 7 are locked and unlocked through the left folding hinge joint lock A and the right folding hinge joint lock B; a seat plate 7 is connected between the left folding hinge joint lock A and the right folding hinge joint lock B in a hinge mode; a tent frame 6 is connected between the left folding articulated joint lock A and the right folding articulated joint lock B in an articulated manner; after the inner locking mechanisms of the left folding hinge joint lock A and the right folding hinge joint lock B are unlocked, the tent frame 6 and the seat plate 7 can be simultaneously turned over and hinged from top to bottom to fold, the tent frame 6 and the seat plate 7 after being hinged and folded are obliquely arranged in the same direction with the left front foot rod 1 and the right front foot rod 3, the space between the left front foot rod 1 and the right front foot rod 3 is utilized for accommodating the tent frame 6 and the seat plate 7 to compress the folding volume, the tent frame 6 and the seat plate 7 are arranged in parallel, the space is compressed, the packing volume is compressed, the whole tent frame 6 and the seat plate 7 are conveniently accommodated, and the whole tent is folded after the package is not required to be disassembled; After the rear foot rest 10, the push-up frame 9, the awning frame 6 and the seat plate 7 of the whole baby carriage are folded, the volume of the baby carriage is greatly compressed, the packaging volume is smaller, the cabinet loading amount is integrally increased, the baby carriage is convenient to sell, express and transport, the transport cost is reduced, and the baby carriage is convenient for a user to carry out and place in a rear tail box of a car; after the tent frame 6 and the seat plate 7 are turned from bottom to top and unfolded in place, the seat plate 7 and the tent frame 6 are locked by the inner locking mechanism of the left folding hinge joint lock A and the right folding hinge joint lock B, the seat plate 7 is arranged flatly and can sit, the tent frame 6 is turned over to the upper part or the rear upper part of the seat plate 7, the user does not need to install, the turning and unfolding are convenient, the rear foot rest 10, the push-up frame 9, the tent frame 6 and the seat plate 7 of the whole baby carriage can be used after being unfolded, and the whole baby carriage is folded in a linkage manner and unfolded in a linkage manner, so that the efficiency is improved.

The preferred technical scheme is as follows: the left folding articulated lock A comprises a left installation connecting component A1, a first left locking and unlocking device A2 and a second left locking and unlocking device A3, wherein the common center of the left installation connecting component A1, the first left locking and unlocking device A2 and the second left locking and unlocking device A3 is transversely connected with a left mandrel nail A4, the left installation connecting component A1 is movably connected with the first left locking and unlocking device A2, so that the first left locking and unlocking device A2 can be movably hinged relative to the left installation connecting component A1 in a turnover manner; the first left locking and unlocking device A2 is movably connected with the second left locking and unlocking device A3; the left mounting connecting component A1 is connected with the left base 4 to form a fixed mounting function;

The right folding articulated lock B comprises a right installation connecting component B1, a first right locking and unlocking device B2 and a second right locking and unlocking device B3, wherein the common center of the right installation connecting component B1, the first right locking and unlocking device B2 and the second right locking and unlocking device B3 is transversely connected with a right mandrel nail B4, the right installation connecting component B1 is movably connected with the first right locking and unlocking device B2, so that the first right locking and unlocking device B2 can be movably hinged relative to the right installation connecting component B1 in a turnover manner; the first right locking and unlocking device B2 is movably connected with the second right locking and unlocking device B3; the right installation connecting component B1 is connected with the right base 5 to form a fixed installation effect;

The awning frame 6 is fixedly connected between the first left locking and unlocking device A2 and the first right locking and unlocking device B2, and the awning frame 6 is used for supporting awning cloth and also is used for performing overturning hinging operation on the first left locking and unlocking device A2 and the first right locking and unlocking device B2;

The seat plate 7 is movably connected between the second left locking and unlocking device A3 and the second right locking and unlocking device B3;

The awning frame 6 is simultaneously locked and unlocked through the first left locking and unlocking device A2 and the first right locking and unlocking device B2, the awning frame 6 can be rotated and adjusted after being locked, the awning frame 6 can not be turned and adjusted, the awning frame 6 can be rotated and adjusted after being unlocked through the first left locking and unlocking device A2 and the first right locking and unlocking device B2;

The second left locking and unlocking device A3 and the second right locking and unlocking device B3 are locked and unlocked through the first left locking and unlocking device A2 and the first right locking and unlocking device B2, and the second left locking and unlocking device A3 and the second right locking cannot work after locking; the seat plate 7 is simultaneously locked and unlocked through a second left locking and unlocking device A3 and a second right locking and unlocking device B3;

the first left locking and unlocking device A2 and the first right locking and unlocking device B2 are adjusted in place in a rotating mode, and then the second left locking and unlocking device A3 and the second right locking and unlocking device B3 are simultaneously unlocked in a linkage mode, and after unlocking, the awning frame 6 and the seat plate 7 can be synchronously turned, hinged and folded from top to bottom.

The left folding articulated lock A and the right folding articulated lock B are further refined structures, and the first left locking and unlocking device A2 and the first right locking and unlocking device B2 are used for locking and fixing the tent frame 6 and can be turned over to adjust folding after unlocking the tent frame 6; the second left locking and unlocking device A3 and the second right locking and unlocking device B3 are used for locking and fixing the seat plate 7 and unlocking the seat plate 7 and can be turned, adjusted and folded; the first left locking and unlocking device A2 and the first right locking and unlocking device B2 have limiting locking effect on the second left locking and unlocking device A3 and the second right locking and unlocking device B3, and the second left locking and unlocking device A3 and the second right locking and unlocking device B3 can be unlocked only after the first left locking and unlocking device A2 and the first right locking and unlocking device B2 are unlocked and the turning action is in place, namely, the seat plate 7 can be turned and folded after the awning frame 6 is turned and folded; the folding mechanism belongs to interlink operation, and has two stages of locking, namely, the upper stage can be unlocked firstly and the lower stage can be unlocked secondly, so that the folding action is convenient to continuously operate.

The preferred technical scheme is as follows: the awning frame 6 is formed by an inverted U-shaped arch; the top of the tent frame 6 is movably connected with unlocking pieces 61 through traversing shaft nails, the unlocking pieces 61 are connected with steel wire rope assemblies 62, one or two steel wire rope assemblies 62 can be arranged, the interior of the tent frame 6 is hollow, the steel wire rope assemblies 62 are movably hidden in the tent frame 6 and are not exposed, the left end of each steel wire rope assembly 62 is fixedly connected with a first left locking and unlocking device A2, and the right end of each steel wire rope assembly 62 is fixedly connected with a first right locking and unlocking device B2; by operating the unlocking piece 61, the wire rope assembly 62 synchronously pulls the first left locking and unlocking device A2 and the first right locking and unlocking device B2 to unlock.

The preferred technical scheme is as follows: the seat plate 7 is integrally injection molded; the seat plate 7 comprises a left support lug plate 71, a seat plate 72 and a right support lug plate 73, wherein the left support lug plate 71 and the right support lug plate 73 are connected with the rear edges of the left side and the right side of the seat plate 72 in an upward extending mode;

The first left locking and unlocking device A2 comprises a first left locking stage A21, a first left rotating ring component A22, a first left connecting handle A23, a first left locking component A24 and a first left pressure spring A25;

The top of the first left rotating ring part A22 is integrally and fixedly connected with a first left connecting handle A23 in an extending way; a first left ring through hole A221 is formed in the middle of the first left rotating ring component A22; a first left handle through hole A231 is axially formed in the first left connecting handle A23, and the first left handle through hole A231 is communicated with the first left ring through hole A221;

The inner side of the left mounting connecting component A1 is movably connected with the outer side of the first left rotating ring component A22, and the first left rotating ring component A22 and the first left connecting handle A23 can rotate relative to the left mounting connecting component A1 and the left mandrel nail A4; the upper part of the left mounting connecting component A1 is provided with a first left locking stage A21; the first left handle through hole A231 is provided with a first left pressure spring A25 and a first left locking component A24 which are connected in a jacking mode, and the first left locking component A24 is arranged between the first left pressure spring A25 and the first left locking stage A21;

The second left locking and unlocking device A3 comprises a second left locking component a31, a left annular ring piece a222, a left long arc-shaped through hole a33 formed in the left support lug plate 71 and a left clamping notch a34, wherein the left clamping notch a34 is arranged at one end of the left long arc-shaped through hole a33, and the left long arc-shaped through hole a33 and the left clamping notch a34 are integrally injection molded; the second left locking part A31 is integrally injection molded, a transverse left vertical strip through hole A311 is formed in the middle of the second left locking part A31, and the left vertical strip through hole A311 enables the second right locking part B31 to lift and fall to have a movable space; a left convex lock column A312 is connected to one side wall of the second left locking part A31 in an extending way, and the left convex lock column A312 transversely passes through the left long arc through hole A33; the bottom wall of the second left locking part A31 is provided with a circumferential left groove A313, and the circumferential side wall of the front end notch opposite-out position of the left groove A313 is provided with a left inclined outer side wall A314; the inner wall ring type of the first left ring through hole A221 is provided with a left ring plate A222 in a protruding mode, the left ring plate A222 is inserted into the left groove A313 for positioning, and the left ring plate A222 corresponding to the left inclined outer side wall A314 extends and protrudes to form a left high-position inward protruding unlocking part A223;

The common center of the left mounting connecting component A1, the first left rotating ring component A22, the second left locking component A31 and the left lug plate 71 is transversely connected with a left mandrel nail A4, and the left mandrel nail A4 passes through a left vertical strip through hole A311; the left support lug plate 71 is arranged on the inner side of the first left rotary ring part a22, and the left support lug plate 71 is movably connected with the first left rotary ring part a 22;

The first right locking and unlocking device B2 comprises a first right locking stage B21, a first right rotating ring component B22, a first right connecting handle B23, a first right locking component B24 and a first right pressure spring B25;

The top of the first right rotating ring part B22 is integrally and fixedly connected with a first right connecting handle B23 in an extending way; a first right ring through hole B221 is formed in the middle of the first right rotating ring component B22; a first right handle through hole B231 is axially formed in the first right connecting handle B23, and the first right handle through hole B231 is communicated with the first right ring through hole B221;

The inner side of the right installation connecting component B1 is movably connected with the outer side of the first right rotating ring component B22, and the first right rotating ring component B22 and the first right connecting handle B23 can rotate relative to the base of the right installation connecting component B1 and the right mandrel nail B4; the upper part of the right installation connecting component B1 is provided with a first right locking stage B21; the first right handle through hole B231 is provided with a first right pressure spring B25 and a first right locking component B24 which are connected in a pressing mode, and the first right locking component B24 is arranged between the first right pressure spring B25 and the first right locking stage B21;

The second right locking and unlocking device B3 includes a second right locking component B31, a right annular ring B222, a right long arc through hole B33 formed in the right support lug plate 73, and a right clamping notch B34, wherein the right long arc through hole B33 and the right clamping notch B34 are integrally injection molded, and the right clamping notch B34 is disposed at one end of the right long arc through hole B33; a right vertical strip through hole B311 which is transversely arranged is formed in the middle of the second right locking part B31, and the right vertical strip through hole B311 enables the second right locking part B31 to lift and fall to have a movable space; a right convex lock column B312 is connected to one side wall of the second right locking part B31 in an extending way, and the right convex lock column B312 transversely penetrates through the right long arc-shaped through hole B33; a circumferential right groove B313 is formed in the bottom wall of the second right locking part B31, and a right inclined outer side wall B314 is arranged on the circumferential side wall of the front end notch opposite-out position of the right groove B313; the inner wall ring type of the first right ring through hole B221 is provided with a right ring plate B222 in a protruding mode, the right ring plate B222 is inserted into the right groove B313, and a right high-position inward protruding unlocking part B223 extends and protrudes corresponding to the right ring plate B222 of the right inclined outer side wall B314;

the radian of the left long strip arc-shaped through hole A33 and the right long strip arc-shaped through hole B33 is 0-70 degrees, and the left convex lock column A312 and the right convex lock column B312 move in the range of the left long strip arc-shaped through hole A33; because the seat plate 7 is limited by the radians of the left long strip arc-shaped through hole A33 and the right long strip arc-shaped through hole B33, the seat plate 7 can be turned and folded within the range of 0-70 degrees only by turning and folding within the radians of the left long strip arc-shaped through hole A33 and the right long strip arc-shaped through hole B33.

The common centers of the right mounting connecting component B1, the first right rotating ring component B22, the second right locking component B31 and the right support lug plate 73 are transversely connected with a right mandrel nail B4, and the right mandrel nail B4 passes through a right vertical strip through hole B311; the right lug plate 73 is arranged inside the first right rotating ring member B22;

The first left connecting handle A23 and the first right connecting handle B23 are fixedly connected with the tent frame 6 together by screws;

The specific connection structure of the first left locking and unlocking device A2, the first right locking and unlocking device B2, the second left locking and unlocking device A3 and the second right locking and unlocking device B3 is reasonable in structural design, firm in structure, convenient to use, flexible in hinging and high in unfolding and folding operation efficiency;

Normally, the first left locking part A24 is bounced and pressed into the first left locking stage A21 through the first left pressure spring A25, and is in locking connection with the first left rotating ring part A22 for the left mounting connecting part A1; the first right locking part B24 is bounced and pressed into the first right locking stage B21 through the first right pressure spring B25, and is in locking connection with the first right rotating ring part B22 for the right mounting connecting part B1; the first left rotating ring part A22, the first left connecting handle A23, the first right rotating ring part B22, the first right connecting handle B23 and the awning frame 6 can not be adjusted in a rotating way;

Normally, the second left locking part A31 is in a descending low position, and the left convex locking column A312 is inserted and clamped in the left clamping notch A34 to be in locking connection with the seat plate 7; the second right locking part B31 is in a descending low position, and the right convex locking column B312 is inserted and clamped in the right clamping notch B34 to be in locking connection with the seat plate 7; thereby, the seat plate 7 cannot rotate;

When the folding is to be overturned; firstly, the first left locking part A24 and the first right locking part B24 are simultaneously lifted to separate from the first left locking stage A21 and the first right locking stage B21, and after the first left locking part A24 and the first right locking stage B21 are separated from each other, unlocking of the first left rotating ring part A22 and the first right rotating ring part B22 is completed; then pushing the tent frame 6 to enable the first left rotating ring component A22, the first left connecting handle A23, the first right rotating ring component B22, the first right connecting handle B23 and the tent frame 6 to turn and adjust relative to the left mounting connecting component A1 and the right mounting connecting component B1, synchronously turning from top to bottom from the front of the baby carriage, and enabling the first left rotating ring component A22, the first left connecting handle A23, the first right rotating ring component B22, the first right connecting handle B23 and the tent frame 6 to turn from the front of the baby carriage to bottom; the first left rotating ring component A22 and the first right rotating ring component B22 rotate simultaneously in the turning process, the left hole ring piece A222 and the right hole ring piece B222 rotate simultaneously, the left high-position inner convex unlocking part A223 and the right high-position inner convex unlocking part B223 rotate to enter corresponding left grooves A313 and right grooves B313 by rotating, the second left locking component A31 and the second left locking component A31 are jacked by the high positions of the high-position inner convex unlocking part A223 and the high-position inner convex unlocking part B223, so that the left convex locking column A312 is separated from the left clamping notch A34, the right convex locking column B312 is separated from the right clamping notch B34, after that, unlocking of the seat plate 7 is completed, the seat plate 7 is turned over, the first left rotating ring component A22, the first left connecting handle A23, the first left rotating handle B22, the first connecting handle B23, the first connecting frame 6, the right connecting frame 7, the seat plate 7 and the seat plate 7 are continuously turned over, the seat plate 7 are arranged, and the seat plate 6 and the seat plate 7 are continuously turned over, and the seat plate 6 and the seat plate 7 are folded, and the seat plate 7 are folded;

When to be deployed; the seat plate 7 and the awning frame 6 are turned over and unfolded from bottom to top, and after the seat plate 7 and the awning frame are in place, the second left locking component A31 is reset and lowered to the low position, and the left convex locking column A312 is inserted and clamped in the left clamping notch A34 to be in locking connection with the seat plate 7; the second right locking component B31 is reset to the lower position, and the right convex locking column B312 is inserted into the right clamping notch B34 to be clamped and locked and connected with the seat plate 7; thereby, the seat plate 7 cannot rotate; after the awning frame 6 is continuously turned upwards and in place, the first left locking part A24 is bounced and pressed into the first left locking stage A21 through the first left pressure spring A25, and the left installation connecting part A1 is in locking connection with the first left rotating ring part A22; the first right locking part B24 is bounced and pressed into the first right locking stage B21 through the first right pressure spring B25, and is in locking connection with the first right rotating ring part B22 for the right mounting connecting part B1; the first left rotating ring part A22, the first left connecting handle A23, the first right rotating ring part B22, the first right connecting handle B23 and the awning frame 6 can not be adjusted in a rotating way; thereby completing the unfolding and fixing of the seat plate 7 and the awning frame 6.

The preferred technical scheme is as follows: the inner side wall of the first left rotating ring component A22 is embedded and fixed with a first left reinforcing metal ring gasket A26, which is used for reinforcing the hardness strength of the first left rotating ring component A22 and preventing damage; the inner side wall of the first right rotating ring component B22 is embedded and fixed with a first right reinforcing metal ring gasket B26, which is used for enhancing the hardness strength of the first right rotating ring component B22 and improving the damage prevention capability;

The side wall of the left support lug plate 71 is fixedly connected with a left metal reinforcing base plate 711 through screw adhesion, so as to enhance the hardness strength of the left support lug plate 71 and improve the damage prevention capability; the side wall of the right support lug plate 73 is fixedly connected with a right metal reinforcing base plate 731 through screw adhesion for enhancing the hardness strength of the right support lug plate 73 and improving the damage prevention capability.

The preferred technical scheme is as follows: the top of the tent frame 6 is movably connected with unlocking pieces 61 through transverse shaft nails, the unlocking pieces 61 are connected with steel wire rope assemblies 62, one or two steel wire rope assemblies 62 can be arranged, the interior of the tent frame 6 is hollow, the steel wire rope assemblies 62 are movably hidden in the tent frame 6 and are not exposed, the left end of each steel wire rope assembly 62 is fixedly connected with the first left locking component A24, and the right end of each steel wire rope assembly 62 is fixedly connected with the first right locking component B24; normally, the unlocking piece 61 resets the counter pulling steel wire rope assembly 62 through the first left pressure spring A25 and the first right pressure spring B25 to form an elastic unlocking piece 61, and the steel wire rope assembly 62 is pulled to be lifted through overturning the unlocking piece 61, so that the first left locking component A24 and the first right locking component B24 are synchronously lifted, and the first left locking component A24 and the first right locking component B24 are synchronously separated from the first left locking stage A21 and the first right locking stage B21; after the unlocking piece 61 is released, the first left pressure spring A25 and the first right pressure spring B25 back pressure the first left locking component A24 and the first right locking component B24 are inserted into the first left locking stage A21 and the first right locking stage B21 to be locked, and the unlocking piece 61 is reset by resetting the counter pulling steel wire rope assembly 62 through the first left pressure spring A25 and the first right pressure spring B25; the unlocking piece 61 and the steel wire rope assembly 62 are arranged to facilitate unlocking of people.

The preferred technical scheme is as follows: the first left locking component a24 comprises a first left connecting piece a241 and a first left transverse convex column a242, the left end of the steel wire rope component 62 passes through the first left pressure spring a25 to be bound and fixedly connected to the upper end of the first left connecting piece a241, the first left connecting piece a241 elastically presses the first left pressure spring a25, the first left connecting piece a241 is integrally and fixedly connected with the first left transverse convex column a242, the first left pressure spring a25 bounces to press the first left connecting piece a241 so that the first left transverse convex column a242 is inserted into the first left locking stage a21, and the left mounting connecting component A1 and the first left rotating ring component a22 are locked and connected; when the steel wire rope assembly 62 pulls the first left connecting piece A241 to lift, the first left transverse convex column A242 rises synchronously and is separated from the first left locking stage A21, so that the left mounting connecting component A1 and the first left rotating ring component A22 are unlocked; the structure of the first left locking component A24 is further refined, the design is reasonable, and locking and unlocking are flexible and easy;

The first right locking component B24 includes a first right connecting piece B241 and a first right transverse convex column B242, the right end of the wire rope component 62 passes through the first right pressure spring B25 and is fixedly connected to the upper end of the first right connecting piece B241, the first right connecting piece B241 elastically pushes against the first right pressure spring B25, the first right connecting piece B241 is fixedly connected with the first right transverse convex column B242, the first right pressure spring B25 bounces against the first right connecting piece B241 to enable the first right transverse convex column B242 to be inserted into the first right locking stage B21, and the right mounting connecting component B1 and the first right rotating ring component B22 are locked and connected; when the steel wire rope assembly 62 pulls the first right connecting piece B241 to lift, the first right transverse convex column B242 rises synchronously, and is separated from the first right locking stage B21, so that the right installation connecting component B1 and the first right rotating ring component B22 are unlocked; this is to further refine the specific structure of the first right locking component B24, and has reasonable design, and the locking and unlocking are flexible and easy.

The preferred technical scheme is as follows: a second left pressure spring A27 is pressed between the second left locking part A31 and the top wall of the first left ring through hole A221, so that the second left locking part A31 is elastic, and the second left locking part A31 is always kept in a reset and descending locking state or a to-be-locked state; when the seat plate 7 is unfolded in place, the second left pressure spring A27 pushes the second left locking part A31 to the lowest position, the left convex locking column A312 falls into the left clamping notch A34 to be clamped and locked, and the seat plate 7 is fixed and leveled to sit; a second right pressure spring B27 is pressed between the second right locking part B31 and the top wall of the first right ring through hole B221, so that the second right locking part B31 is elastic, and the second right locking part B31 is always kept in a reset and descending locking state or a to-be-locked state; when the seat plate 7 is unfolded in place, the second right pressure spring B27 pushes the second right locking part B31 to the lowest position, the right convex locking column B312 falls into the right clamping notch B34 to clamp and lock, and the seat plate 7 is fixed and leveled to sit.

The preferred technical scheme is as follows: the outer wall of the left support lug plate 71 is fixedly connected with a left end panel cover 712 by screws; the outer wall of the right support lug plate 73 is fixedly connected with a right end panel cover 732 by screws; the left end panel cover 712 and the right end panel cover 732 are detachably connected with the guard rail 7B through elastic buckles; when the baby carriage is to be folded, the guardrail is detached, the seat plate 7 and the tent frame 6 can be turned over and folded without being blocked, and the folding is smoother; when the infant safety protection device is to be used, the guardrail 7B is inserted into the left end panel cover 712 and the right end panel cover 732 to be locked, so that the infant is prevented from climbing out beyond the boundary, the infant is protected from being sat safely, and the infant is prevented from falling out.

The preferred technical scheme is as follows: two left strip arc through holes A33 and two left clamping notches A34 are arranged and far away from symmetrical arrangement; the two left convex lock posts A312 are far away from the symmetrical arrangement and are correspondingly inserted into the two left long strip arc through holes A33 transversely, so that locking and clamping capacity is improved, and the locking and clamping device is more stable and firm; two right strip arc through holes B33 and two right clamping notches B34 are arranged and far away from symmetrical arrangement; the two right convex lock posts B312 are arranged, are far away from the symmetrical arrangement and are correspondingly transversely inserted into the two right long-strip arc through holes B33, so that locking and clamping capacity is improved, and the locking and clamping device is more stable and firm.

The preferred technical scheme is as follows: the first left locking stage A21 is provided with a plurality of stages, generally three stages, so as to form a multi-gear arrangement; the first right locking stage B21 is provided with a plurality of stages, generally three stages, so as to form a multi-gear arrangement; the first left locking stage A21 and the first right locking stage B21 are horizontally symmetrical left and right; the awning frame 6 can realize multi-gear adjustment, and as the awning frame 6 is provided with awning cloth, the awning frame can be unfolded more or less according to the required angle, and is used for daily adjustment such as wind shielding, rain shielding, shading, sun shielding and the like, and the awning frame is convenient to use.

The preferred technical scheme is as follows: the left base 4 is provided with a left pin hole 4A, and pins of the left installation connecting component A1 are detachably inserted into the left pin hole 4A through elastic buckles and are fixedly connected; the right base 5 is provided with a right pin hole 5A, pins of the left installation connecting component A1 are detachably inserted into the left pin hole 4A through an elastic buckle to be fixedly connected, the left folding articulated lock A and the right folding articulated lock B are convenient to detach, after the left folding articulated lock A and the right folding articulated lock B are detached, the seat and the awning frame 6 can be synchronously detached, the baby bed can be replaced and installed after the seat is detached, and the left pin and the right pin of the baby bed are inserted into the left pin hole 4A and the right pin hole 5A to be clamped tightly; the seat plate 7 is provided with a plurality of seat belt threading holes 74 for threading the infant seat belt.

The preferred technical scheme is as follows: the awning frame 6 comprises a main frame and an auxiliary frame, wherein the bottom of the auxiliary frame is hinged with the main frame, and the auxiliary frame can be hinged and adjusted relative to the main frame in a turnover way, and comprises folding and unfolding. The left and right bottom ends of the main frame are fixedly connected with the corresponding first left connecting handle A23 and first right connecting handle B23, and the top of the main frame is movably connected with an unlocking piece 61 and an inside hiding steel wire rope assembly 62.

Claims (10)

1. The seat and awning frame integrated hinge folding device of the baby carriage comprises a left front foot rod, a front lower cross beam, a right front foot rod, a left base, a right base, an awning frame and a seat plate, wherein the left front foot rod, the front lower cross beam, the right front foot rod, the left base, the right base, the awning frame and the seat plate are inclined backwards; the right base is connected with a right folding articulated joint lock; the method is characterized in that: the tent frame and the seat plate are locked and unlocked through the left folding hinge joint lock and the right folding hinge joint lock; a seat plate is connected between the left folding articulated joint lock and the right folding articulated joint lock in an articulated manner; a tent frame is connected between the left folding articulated joint lock and the right folding articulated joint lock in an articulated manner; after the inner locking mechanisms of the left folding hinge joint lock and the right folding hinge joint lock are unlocked, the tent frame and the seat plate can be simultaneously turned over, hinged and folded from top to bottom, and the tent frame and the seat plate are obliquely arranged in the same direction with the left front foot rod and the right front foot rod after being hinged and folded; after the awning frame and the seat plate are turned from bottom to top and unfolded in place, the inner locking mechanisms of the left folding hinge joint lock and the right folding hinge joint lock the seat plate and the awning frame, the seat plate is arranged in a flat mode, people can sit, and the awning frame is turned to the upper portion of the seat plate.

2. The integrated seat and canopy frame hinge folding apparatus of a stroller of claim 1, wherein:

The left folding hinge joint lock comprises a left installation connecting component, a first left locking and unlocking device and a second left locking and unlocking device, wherein the common center of the left installation connecting component, the first left locking and unlocking device and the second left locking and unlocking device is transversely connected with a left mandrel nail; the left mounting connecting component is connected with the left base;

The right folding hinge joint lock comprises a right installation connecting component, a first right locking and unlocking device and a second right locking and unlocking device, wherein the common center of the right installation connecting component, the first right locking and unlocking device and the second right locking and unlocking device is transversely connected with a right mandrel nail; the right mounting connecting component is connected with the right base;

The first left locking and unlocking device and the first right locking and unlocking device are fixedly connected with the awning frame;

The seat plate is movably connected between the second left locking and unlocking device and the second right locking and unlocking device;

The awning frame is simultaneously locked and unlocked through the first left locking and unlocking device and the first right locking and unlocking device, the awning frame can not be turned and adjusted after being locked, and the awning frame can be rotated and adjusted after being unlocked through the first left locking and unlocking device and the first right locking and unlocking device;

The second left locking and unlocking device and the second right locking and unlocking device are locked and unlocked through the first left locking and unlocking device and the first right locking and unlocking device, and the second left locking and unlocking device and the second right locking device cannot work after the locking; the seat plate is simultaneously locked and unlocked through a second left locking and unlocking device and a second right locking and unlocking device;

The first left locking and unlocking device and the first right locking and unlocking device can simultaneously carry out linkage unlocking on the second left locking and unlocking device and the second right locking and unlocking device after rotating and adjusting in place, and after unlocking, the tent frame and the seat plate can be synchronously turned, hinged and folded from top to bottom.

3. The integrated seat and canopy frame hinge folding apparatus of a stroller of claim 2, wherein:

The seat plate comprises a left support lug plate, a seat plate and a right support lug plate, and the left and right side rear edges of the seat plate are connected with the left support lug plate and the right support lug plate in an upward extending mode;

The first left locking and unlocking device comprises a first left locking stage, a first left rotating ring component, a first left connecting handle, a first left locking component and a first left pressure spring;

the top of the first left rotating ring component is fixedly connected with a first left connecting handle; a first left ring through hole is formed in the middle of the first left rotating ring component; a first left handle through hole is axially formed in the first left connecting handle and is communicated with the first left ring through hole;

The inner side of the left mounting connecting component is movably connected with the outer side of the first left rotating ring component in a covering way; the upper part of the left mounting connecting component is provided with a first left locking stage; the first left handle through hole is provided with a first left pressure spring and a first left locking part, and the first left locking part is arranged between the first left pressure spring and the first left locking stage;

the second left locking and unlocking device comprises a second left locking part, a left annular ring piece, a left long strip-shaped arc-shaped through hole formed in the left support lug plate and a left clamping notch, and the left clamping notch is arranged at one end of the left long strip-shaped arc-shaped through hole; a transverse left vertical strip through hole is formed in the middle of the second left locking component; a left convex lock column is connected to one side wall of the second left locking component in an extending way, and the left convex lock column transversely penetrates through the left long arc-shaped through hole; the bottom wall of the second left locking part is provided with a circumferential left groove, and the circumferential side wall of the position opposite to the front end notch of the left groove is provided with a left inclined outer side wall; the inner wall ring type of the first left ring through hole is provided with a left ring-shaped piece in a protruding mode, the left ring-shaped piece is inserted into the left groove, and the left ring-shaped piece corresponding to the left inclined outer side wall extends to protrude to form a left high-position inwards-protruding unlocking part;

The centers of the left mounting connecting component, the first left rotating ring component, the second left locking component and the left lug plate are transversely connected with a left mandrel nail, and the left mandrel nail passes through a left vertical strip through hole; the left support lug plate is arranged on the inner side of the first left rotating ring component;

the first right locking and unlocking device comprises a first right locking stage, a first right rotating ring component, a first right connecting handle, a first right locking component and a first right pressure spring;

The top of the first right rotating ring component is fixedly connected with a first right connecting handle; a first right ring through hole is formed in the middle of the first right rotating ring component; a first right handle through hole is axially formed in the first right connecting handle, and the first right handle through hole is communicated with the first right ring through hole;

the inner side of the right installation connecting component is movably connected with the outer side of the first right rotating ring component in a covering way; the upper part of the right installation connecting component is provided with a first right locking stage; the first right handle through hole is provided with a first right pressure spring and a first right locking component, and the first right locking component is arranged between the first right pressure spring and the first right locking stage;

The second right locking and unlocking device comprises a second right locking part, a right annular ring piece, a right long strip-shaped arc-shaped through hole formed in the right support lug plate piece and a right clamping notch, and the right clamping notch is arranged at one end of the right long strip-shaped arc-shaped through hole; a right vertical strip through hole which is transversely formed in the middle of the second right locking component; a right convex lock column is connected to one side wall of the second right locking component in an extending way, and the right convex lock column transversely penetrates through the right long arc-shaped through hole; the bottom wall of the second right locking part is provided with a circumferential right groove, and the circumferential side wall of the position opposite to the front end notch of the right groove is provided with a right inclined outer side wall; the inner wall ring type bulge of the first right ring through hole is provided with a right ring hole piece, the right ring hole piece is inserted into the right groove, and the right ring hole piece corresponding to the right inclined outer side wall extends and protrudes to form a right high-position inward bulge unlocking part;

The centers of the right mounting connecting component, the first right rotating ring component, the second right locking component and the right support lug plate are transversely connected with a right mandrel nail, and the right mandrel nail passes through the right vertical strip through hole; the right support lug plate is arranged on the inner side of the first right rotating ring component;

The first left connecting handle and the first right connecting handle are fixedly connected with the tent frame together.

4. A stroller seat and canopy frame integrated hinge folding assembly as claimed in claim 3, wherein: the top swing joint of covering or awning on a car, boat, etc. frame has the unlatching piece, and the unlatching piece is connected with wire rope subassembly, and wire rope subassembly activity is hidden to connect in the inside of covering or awning on a car, boat, etc. frame, the left end and the first left locking part fixed connection of wire rope subassembly, the right-hand member and the first right locking part fixed connection of wire rope subassembly.

5. The integrated seat and canopy frame hinge folding apparatus of a stroller of claim 4, wherein: the first left locking component comprises a first left connecting piece and a first left transverse convex column, the left end of the steel wire rope component penetrates through the first left pressure spring to be fixedly connected to the upper end of the first left connecting piece, the first left connecting piece elastically pushes against the first left pressure spring, the first left connecting piece is fixedly connected with the first left transverse convex column, and the first left pressure spring bounces against the first left connecting piece to enable the first left transverse convex column to be inserted into the first left locking stage;

the first right locking part comprises a first right connecting piece and a first right transverse convex column, the right end of the steel wire rope assembly penetrates through the first right pressure spring to be fixedly connected with the upper end of the first right connecting piece, the first right connecting piece elastically pushes against the first right pressure spring, the first right connecting piece is fixedly connected with the first right transverse convex column, and the first right pressure spring rebounds to push against the first right connecting piece to enable the first right transverse convex column to be inserted into the first right locking stage.

6. A seat and canopy frame integrated hinge folding device for a stroller as claimed in any one of claims 3 to 5, wherein: a second left pressure spring is propped between the second left locking part and the top wall of the first left ring through hole; and a second right pressure spring is propped between the second right locking part and the top wall of the first right ring through hole.

7. A seat and canopy frame integrated hinge folding device for a stroller as claimed in any one of claims 3 to 5, wherein: the outer wall of the left support lug plate is fixedly connected with a left end panel cover; the outer wall of the right support lug plate is fixedly connected with a right end panel cover; the guardrail is detachably connected between the left end panel cover and the right end panel cover.

8. A seat and canopy frame integrated hinge folding device for a stroller as claimed in any one of claims 3 to 5, wherein: the left long strip arc-shaped through holes and the left clamping notches are arranged in two and far away from symmetrical arrangement; the two left convex lock posts are arranged far away from the symmetrical arrangement and are correspondingly inserted into the two left long strip arc through holes; the right strip arc-shaped through hole and the right clamping notch are arranged in two and far away from symmetrical arrangement; the right convex lock posts are arranged in two, are far away from the symmetrical arrangement and are correspondingly and transversely inserted into the two right long strip arc through holes.

9. A seat and canopy frame integrated hinge folding device for a stroller as claimed in any one of claims 3 to 5, wherein: the first left locking stage is provided with a plurality of stages to form a multi-gear arrangement; the first right locking stage is provided with a plurality of stages, forming a multi-gear arrangement.

10. A seat and canopy frame integrated hinge folding device for a stroller as claimed in any one of claims 2 to 5, wherein: the left base is provided with a left pin hole, and pins of the left mounting connecting component are detachably inserted into the left pin hole to be connected and fixed; the right base is provided with a right pin hole, and pins of the left mounting connecting component are detachably inserted into the left pin hole to be connected and fixed; the seat plate is provided with a plurality of seat belt through holes.