CN215622225U - Baby stroller sitting pocket folding mechanism - Google Patents

Abstract

The utility model discloses a baby stroller sitting stump folding mechanism, which comprises a sitting stump plug-in, a gear pressure spring, a locking gear, a guide piece, a gear adjusting piece, a traction wire, a locking piece, a sitting stump large joint, a front handrail socket, a surrounding rod and the like; locking gear, the guide, sit pocket plug-in components upper portion and establish in proper order and keep off the lateral surface of position regulating part lower part, the gear pressure spring is established between pocket plug-in components upper portion and the locking gear, the enclosing pole is inserted and is established on the enclosing pole socket, it slides the chamber to be equipped with the locking piece in the fender position regulating part, the one end of haulage wire is connected with the haulage wire jack on the enclosing pole, the other end and locking piece, the guide is connected, sit pocket major joint upper portion, preceding handrail socket establishes in proper order and keeps off the medial surface of position regulating part lower part. The utility model realizes the function of simultaneously unlocking two joints by one traction wire and one operation, has convenient operation and reliable performance, can greatly reduce the size of the folded baby carriage after the seat stump is seated, and is more beneficial to family storage, packing and boxing at ordinary times.

Description

Baby stroller sitting pocket folding mechanism

Technical Field

The utility model belongs to the field of baby strollers, and particularly relates to a baby stroller sitting pocket folding mechanism.

Background

Foldable strollers are now common in the market. The user can fold it when not using or going out to convenient storage or transport. For baby strollers, the stump of sitting is the most dominant folding object. But current product is folding the stifle, and the operation is most comparatively inconvenient, and the stifle size of sitting after folding still great, is unfavorable for accomodating and packing vanning.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a baby stroller seat stump folding mechanism which can further reduce the size of the folded seat stump while optimizing the structure and simplifying the operation.

In order to solve the technical problems and achieve the technical effects, the utility model is realized by the following technical scheme:

a baby stroller seat stump folding mechanism comprises a seat stump plug-in, a gear pressure spring, a locking gear, a guide piece, a gear adjusting piece, a traction wire, a locking piece, a seat stump large joint, a front handrail socket and a surrounding rod; the rotation center points of the stump-sitting plug-in component, the locking gear, the guide component, the gear regulating component, the stump-sitting large joint and the front armrest socket are all positioned on the same axis;

the gear adjusting part consists of a gear adjusting part body and a surrounding rod socket arranged on the gear adjusting part body, wherein a locking gear inner side cavity taking the rotation central point as the center is arranged on the outer side surface of the gear adjusting part body, and a guide part installation cavity taking the rotation central point as the center is arranged on the bottom surface cavity wall of the locking gear inner side cavity; the guide piece can be rotatably arranged in the guide piece mounting cavity around the rotation central point, an inclined plane lug for lifting the guide piece outwards or resetting the guide piece inwards along with the forward and reverse rotation of the guide piece is arranged on the wall of the bottom surface cavity of the guide piece mounting cavity, and an inclined plane groove capable of being in sliding fit with the inclined plane lug is arranged on the inner side surface of the guide piece;

the sitting stump plug-in unit consists of a sitting stump plug-in unit body and a gear adjusting piece outer side cover plate arranged on the sitting stump plug-in unit body, wherein a locking gear outer side cavity is arranged on the inner side surface of the gear adjusting piece outer side cover plate, the gear adjusting piece outer side cover plate is fixedly covered on the outer side surface of the gear adjusting piece body, and the locking gear can be axially and slidably arranged in a cavity formed by the locking gear inner side cavity and the locking gear outer side cavity; the gear pressure spring is arranged between the outer side cover plate of the gear adjusting piece and the locking gear, and the locking gear is tightly attached to the outer side surface of the guide piece; when the guide piece is lifted outwards due to forward rotation, the guide piece pushes the locking gear outwards to completely slide into the cavity on the outer side of the locking gear, and when the guide piece is reset inwards due to reverse rotation, the gear pressure spring pushes the locking gear inwards to slide between the cavity on the outer side of the locking gear and the cavity on the inner side of the locking gear;

the lower end of the surrounding rod is inserted into the surrounding rod socket, and an upper sliding cavity of a locking piece which is communicated up and down is arranged in the surrounding rod socket; a lower sliding groove at the inner side of the locking piece is arranged on the outer side surface of the gear adjusting piece body and is communicated with the upper sliding cavity of the locking piece and the guide piece installation cavity; the inner side surface of the locking gear is provided with a locking piece outer side lower sliding groove, the locking piece outer side lower sliding groove and the locking piece inner side lower sliding groove are combined to form a locking piece lower sliding cavity, the locking piece lower sliding cavity and the locking piece upper sliding cavity are in a straight line and form a locking piece sliding cavity, and the locking piece is arranged in the locking piece sliding cavity in a vertically sliding mode;

one end of the traction wire is connected with a traction wire retracting mechanism positioned on the surrounding rod, the other end of the traction wire is connected with the guide piece through the inside of the surrounding rod and the locking piece sliding cavity in sequence, and the traction wire penetrates through the locking piece and is connected with the locking piece when passing through the locking piece sliding cavity; the guide piece realizes forward and reverse rotation through traction or release of the traction wire, and the locking piece realizes withdrawal or insertion into a lower sliding cavity of the locking piece through traction or release of the traction wire;

a first inner ring groove and a first outer ring groove which take the rotation central point as a center are formed in the outer side surface of the gear adjusting piece body; the big joint of the sitting stump consists of a big joint body of the sitting stump and an inner side cover plate of a gear adjusting piece arranged on the big joint body of the sitting stump, wherein a first inner ring convex ring and a first outer ring convex ring which take the rotation central point as the center are arranged on the outer side surface of the inner side cover plate of the gear adjusting piece; meanwhile, a locking notch which can be overlapped with the lower sliding cavity of the locking piece is formed in the first outer ring convex ring, and the locking piece is inserted into the lower sliding cavity of the locking piece and the locking notch simultaneously to lock the cover plate on the inner side of the gear adjusting piece;

a second inner ring groove and a second outer ring groove which take the rotation central point as a center are formed in the inner side surface of the cover plate on the inner side of the gear adjusting part; the outer side face of the front armrest socket is provided with a second inner ring convex ring and a second outer ring convex ring which take the rotation central point as the center, the front armrest socket can cover the inner side face of the cover plate on the inner side of the gear adjusting piece in a rotating mode around the rotation central point, the second inner ring convex ring is in sliding fit with the second inner ring groove, and the second outer ring convex ring is in sliding fit with the second outer ring groove.

Furthermore, a folding handle is arranged on the outer side surface of the outer side cover plate of the gear adjusting piece.

Furthermore, a circle of pressure spring caulking grooves used for fixing the gear pressure spring are formed in the outer side face of the locking gear.

Furthermore, a front handrail socket rotation limiting column is arranged on the inner side face of the front handrail socket, an arc-shaped hole which takes the rotation central point as the center is formed in the inner side face of the cover plate on the inner side of the gear adjusting piece, and the front handrail socket rotation limiting column is slidably embedded in the arc-shaped hole.

Furthermore, the traction wire retracting mechanism is composed of a spring button and a spring button seat, the spring button seat is used for controlling the retraction of the traction wire, the spring button seat is arranged in the middle of the top end of the surrounding rod, the spring button is installed on the spring button seat, and the spring button controls the traction wire to be pulled or released through the self-pressing or bouncing.

Furthermore, two opposite guide piece rotation limiting grooves are formed in the circumferential surface of each guide piece, first fixing anchor points for fixing the traction wire of the traction wire are arranged on the circumferential surface of each guide piece, two opposite guide piece rotation limiting blocks are arranged on the annular inner wall of the guide piece installation cavity, and the two guide piece rotation limiting blocks are respectively located in the two guide piece rotation limiting grooves.

Furthermore, a traction wire through groove which is communicated up and down is formed in the outer side surface of the locking piece, a second traction wire fixing anchor point for fixing a traction wire is arranged in the traction wire through groove, and the second traction wire fixing anchor point is located at the lower part of the locking piece; and simultaneously, the upper portion of locking piece is provided with the convex last bulge in the outside, the lower part of locking piece is provided with the convex lower bulge in the inside side, be provided with a locking piece sliding spacing groove on the outside inner wall in the chamber that slides on the locking piece, go up the bulge with the locking piece slides spacing groove sliding fit, down the bulge with the locking breach connects the cooperation of inserting.

Furthermore, the tank bottom face of locking piece slip spacing groove is provided with the guide rib strip, be provided with on the lateral surface of going up the bulge inwards with the guide way that the lead to the groove intercommunication of traction wire, the guide rib strip with guide way sliding fit.

Furthermore, the locking piece upper sliding cavity is composed of a locking piece inner side upper sliding groove and a locking piece inner side upper sliding groove cover plate.

Furthermore, be provided with an edge on the medial surface of fender position regulating part outside apron the folding cavity pivot of rotation central point axial extension, folding cavity pivot passes in proper order locking gear the guide piece keep off position regulating part body with keep off the rotation central point of the inboard apron of position regulating part after with the rotation central point of preceding handrail socket aligns, preceding handrail socket inserts through one from its rotation central point the round pin axle of folding cavity pivot with keep off position regulating part outside apron and connect.

The utility model has the beneficial effects that:

the utility model realizes the function of simultaneously unlocking two joints by one traction wire and one operation, has beautiful appearance, simple structure, convenient operation and reliable performance, and more importantly, can greatly reduce the size of the folded baby carriage after the sitting stump is folded, and is more beneficial to family storage, packing and boxing at ordinary times.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the utility model and together with the description serve to explain the utility model without limiting the utility model. In the drawings:

FIG. 1 is a schematic view of the outer structure of the present invention;

FIG. 2 is a schematic view of the inner structure of the present invention;

FIG. 3 is an exploded view of the present invention;

FIG. 4 is a cross-sectional view of a joint site of the present invention;

FIG. 5 is an outer side schematic view of the gear adjustment member of the present invention;

FIG. 6 is a schematic view of the inner side of the gear adjustment member of the present invention;

FIG. 7 is a schematic view of the outer configuration of the guide member of the present invention;

FIG. 8 is a schematic view of the inner structure of the guide member of the present invention;

FIG. 9 is a schematic view of the outer side of the stump plug of the present invention;

FIG. 10 is a schematic view of the inner side of the stump plug according to the present invention;

FIG. 11 is an outer side view of the lock gear of the present invention;

FIG. 12 is a schematic view of the inner side of the locking gear of the present invention;

FIG. 13 is a schematic view of the outer side structure of the large stump joint of the present invention;

FIG. 14 is a schematic view of the medial structure of the large stump joint of the present invention;

FIG. 15 is a schematic view of the outer side of the front arm socket of the present invention;

FIG. 16 is a schematic view of the inside structure of the front arm socket of the present invention;

FIG. 17 is a schematic structural view of a tow take-up and pay-off mechanism according to the present invention;

FIG. 18 is a schematic view of the outside structure of the locking element of the present invention;

FIG. 19 is a schematic view of the inner structure of the locking element of the present invention;

FIG. 20 is a schematic view of the guide, lock and gear adjustment assembly of the present invention;

FIG. 21 is a schematic view of the locking gear, gear compression spring and gear adjustment member of the present invention in assembled relation;

FIG. 22 is a schematic view showing the engagement between the locking member and the large joint of the present invention;

FIG. 23 is a schematic view showing the fitting relationship between the locking member of the present invention and the gear adjusting member and the large joint of the stump.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. The description set forth herein is intended to provide a further understanding of the utility model and forms a part of this application and is intended to be an exemplification of the utility model and is not intended to limit the utility model to the particular embodiments illustrated.

Referring to fig. 1-4, a baby stroller pocket folding mechanism comprises a pocket plug-in 1, a gear pressure spring 2, a locking gear 3, a guide 4, a gear adjusting piece 5, a pull wire (not shown), a locking piece 6, a pocket large joint 7, a front handrail socket 8 and a surrounding rod 9; and the stump of sitting plug-in components 1, locking gear 3 the guide 4 the fender position regulating part 5 the stump of sitting large joint 7 with the rotation central point of preceding handrail socket 8 all is located same axis.

As shown in fig. 5 to 6, the gear adjuster 5 is composed of a gear adjuster body 501 and a surrounding rod socket 502 arranged on the gear adjuster body 501, a locking gear inner side cavity 503 centering on the rotation center point is arranged on an outer side surface of the gear adjuster body 501, and a guide mounting cavity 504 centering on the rotation center point is arranged on a bottom cavity wall of the locking gear inner side cavity 503; the guide 4 is rotatably disposed in the guide mounting cavity 504 around the rotation center point, an inclined protrusion 505 for lifting the guide 4 outward or returning inward along with the forward and reverse rotation of the guide 4 is disposed on the bottom cavity wall of the guide mounting cavity 504, as shown in fig. 7-8, and an inclined groove 401 capable of slidably engaging with the inclined protrusion 505 is disposed on the inner side surface of the guide 4;

referring to fig. 9-10, the sit-pocket insert 1 is composed of a sit-pocket insert body 101 and a gear adjusting piece outer cover plate 102 arranged on the sit-pocket insert body 101, a locking gear outer cavity 103 is arranged on the inner side surface of the gear adjusting piece outer cover plate 102, the gear adjusting piece outer cover plate 102 is fixedly covered on the outer side surface of the gear adjusting piece body 501, and the locking gear 3 is axially slidably arranged in a cavity formed by the locking gear inner cavity 503 and the locking gear outer cavity 103; the gear compression spring 2 is arranged between the gear adjusting piece outer side cover plate 102 and the locking gear 3, and the locking gear 3 is tightly attached to the outer side surface of the guide piece 4; when the guide piece 4 is lifted outwards due to forward rotation, the guide piece 4 pushes the locking gear 3 to slide into the locking gear outer side cavity 103 completely, and when the guide piece 4 is reset inwards due to reverse rotation, the gear pressure spring 2 pushes the locking gear 3 to slide into a position between the locking gear outer side cavity 103 and the locking gear inner side cavity 503;

as shown in fig. 1-2, the lower end of the surrounding rod 9 is inserted into the surrounding rod socket 502, and as shown in fig. 6, an upper sliding cavity of the locking member is arranged in the surrounding rod socket 502 and penetrates up and down; referring to fig. 5, a locking member inner lower sliding groove 506 communicating the locking member upper sliding cavity and the guide member mounting cavity 504 is formed on the outer side surface of the gear adjusting member body 501; referring to fig. 12, a locking member outer lower sliding groove 301 is formed on an inner side surface of the locking gear 3, the locking member outer lower sliding groove 301 and the locking member inner lower sliding groove 506 are combined to form a locking member lower sliding cavity, the locking member lower sliding cavity and the locking member upper sliding cavity are aligned and form a locking member sliding cavity, and the locking member 6 is slidably disposed in the locking member sliding cavity up and down;

one end of the traction wire is connected with a traction wire retracting mechanism on the surrounding rod 9, the other end of the traction wire is connected with the guide piece 4 through the inside of the surrounding rod 9 and the locking piece sliding cavity in sequence, and the traction wire penetrates through the locking piece 6 and is connected with the locking piece 6 when passing through the locking piece sliding cavity; the guide piece 4 realizes forward and reverse rotation through traction or release of the traction wire, and the locking piece 6 realizes withdrawal or insertion into a lower sliding cavity of the locking piece through traction or release of the traction wire;

referring to fig. 6, a first inner ring groove 507 and a first outer ring groove 508 centered on the rotation center point are disposed on the outer side surface of the gear adjuster body 501; as shown in fig. 13, the big drop seat joint 7 is composed of a big drop seat joint body 701 and an inner side cover plate 702 of a gear adjusting piece arranged on the big drop seat joint body 701, a first inner ring convex ring 703 and a first outer ring convex ring 704 which take the rotation center point as the center are arranged on the outer side surface of the inner side cover plate 702 of the gear adjusting piece, the inner side cover plate 702 of the gear adjusting piece can cover the inner side surface of the gear adjusting piece body 501 around the rotation center point in a rotating manner, the first inner ring convex ring 703 is in sliding fit with the first inner ring groove 507, and the first outer ring convex ring 704 is in sliding fit with the first outer ring groove 508; meanwhile, a locking notch 705 which can be overlapped with a lower sliding cavity of the locking element is formed in the first outer ring convex ring 704, and the locking element 6 is inserted into the lower sliding cavity of the locking element and the locking notch 705 simultaneously to lock the inner side cover plate 702 of the gear adjusting element;

referring to fig. 14, a second inner ring groove 706 and a second outer ring groove 707 centered on the rotation center point are disposed on the inner side surface of the gear adjuster inner cover plate 702; referring to fig. 15 to 16, a second inner ring convex ring 801 and a second outer ring convex ring 802 centered on the rotation center point are disposed on the outer side surface of the front handle socket 8, the front handle socket 8 is rotatably covered on the inner side surface of the gear adjusting member inner side cover plate 702 around the rotation center point, the second inner ring convex ring 801 is in sliding fit with the second inner ring groove 706, and the second outer ring convex ring 802 is in sliding fit with the second outer ring groove 707.

Further, as shown in fig. 1, 3 and 4, a folding handle 10 is disposed on an outer side surface of the gear adjusting member outer cover plate 102.

Further, as shown in fig. 11, a ring of pressure spring caulking grooves 302 for fixing the gear pressure spring 2 is provided on the outer side surface of the lock gear 3.

Further, referring to fig. 13-15, the inner side surface of the front arm socket 8 is provided with a front arm socket rotation limiting post 803, the inner side surface of the gear adjusting piece inner side cover plate 702 is provided with an arc-shaped hole 708 centering on the rotation central point, and the front arm socket rotation limiting post 803 is slidably embedded in the arc-shaped hole 708.

Further, as shown in fig. 17, the traction wire retracting mechanism is composed of a spring button for controlling the retraction of the traction wire and a spring button seat 11, the spring button seat 11 is arranged in the middle of the top end of the surrounding rod 9, the spring button is mounted on the spring button seat 11, and the spring button controls the traction or release of the traction wire through the self-downward pressing or bouncing.

Further, as shown in fig. 7 to 8, two opposite guide rotation limiting grooves 402 are formed on the circumferential surface of the guide 4, a first fixing anchor 403 for fixing the traction wire is formed on the circumferential surface of the guide 4, and as shown in fig. 5, two opposite guide rotation limiting blocks 509 are formed on the annular inner wall of the guide mounting cavity 504, and the two guide rotation limiting blocks 509 are respectively located in the two guide rotation limiting grooves 402.

Further, as shown in fig. 18 to 19, an up-and-down drawing wire through groove 601 is formed on an outer side surface of the locking member 6, a drawing wire second fixing anchor point 602 for fixing a drawing wire is arranged in the drawing wire through groove 601, and the drawing wire second fixing anchor point 602 is located at a lower portion of the locking member 6; simultaneously, the upper portion of locking piece 6 is provided with protruding portion 603 on the outside, the lower part of locking piece 6 is provided with protruding portion 604 down to the inside, be provided with a locking piece on the locking piece and slide spacing groove 510 on the outside inner wall in chamber, go up the protruding portion 603 with locking piece slides spacing groove 510 sliding fit, protruding portion 604 with locking breach 705 connects the joint.

Further, as shown in fig. 6, a guide rib 511 is disposed on the bottom surface of the locking member sliding limiting groove 510, a guide groove 605 inwardly communicating with the traction wire through groove 601 is disposed on the outer side surface of the upper protrusion 603, and the guide rib 511 is in sliding fit with the guide groove 605.

Further, referring to fig. 6, the locking member upper slide cavity is composed of a locking member inner upper slide groove 512 and a locking member inner upper slide groove cover plate.

Further, as shown in fig. 10, a folding hollow rotating shaft 104 extending axially along the rotation center point is disposed on an inner side surface of the gear adjusting member outer side cover plate 102, as shown in fig. 4, the folding hollow rotating shaft 104 sequentially passes through the locking gear 3, the guide member 4, the gear adjusting member body 501 and the rotation center point of the gear adjusting member inner side cover plate 702 and then is aligned with the rotation center point of the front handle socket 8, and the front handle socket 8 is connected to the gear adjusting member outer side cover plate 102 through a pin inserted into the folding hollow rotating shaft 104 from the rotation center point thereof.

Referring to fig. 1-23, the working principle of the present invention is as follows:

when the folding mechanism needs to be folded, only the spring button positioned at the top of the surrounding rod 9 needs to be pressed, the spring button can immediately upwards tighten the traction wire, and the traction wire can simultaneously pull the locking piece 6 and the guide piece 4 in the upwards tightening process; on one hand, the traction wire drives the guide part 4 to rotate a certain angle in the guide part installation cavity 504 in the forward direction, and in the forward rotation process, the inclined plane groove 401 located on the inner side surface of the guide part 4 and the inclined plane bump 505 located on the bottom wall of the guide part installation cavity 504 gradually slide in the opposite direction, so that the guide part 4 is gradually lifted outwards from the guide part installation cavity 504, the guide part 4 simultaneously pushes the locking gear 3 outwards, the locking gear 3 is completely pushed into the locking gear outer side cavity 103, and at the moment, the locking gear 3 is separated from the locking gear inner side cavity 503, so that the unlocking of the seat and stump plug-in 1 and the gear adjusting part 5 is realized; on the other hand, the traction wire drives the locking piece 6 to slide upwards in the locking piece sliding cavity until the locking piece 6 is completely withdrawn from the locking piece lower sliding cavity and the locking notch 705, so that the unlocking of the seat stump large joint 7 and the gear adjusting piece 5 is realized.

When the sitting stump plug-in 1 and the gear adjusting piece 5 and the sitting stump large joint 7 start to rotate, the spring button can be loosened, and the traction wire is released; at this time, under the action of the self gravity of the guide 4, the inclined plane groove 401 positioned on the inner side surface of the guide 4 and the inclined plane bump 505 positioned on the wall of the bottom surface cavity of the guide mounting cavity 504 gradually slide towards opposite directions, so that the guide 4 is urged to rotate reversely, and gradually fall back into the guide mounting cavity 504 and finally reset; in the process of reverse rotation of the guide part 4, the guide part 4 pulls the traction wire back downwards, and the traction wire simultaneously drives the locking part 6 to slide downwards in the locking part sliding cavity until the locking part 6 returns to the initial position; meanwhile, because the outer cavity of the locking gear and the inner cavity of the locking gear are staggered due to rotation, the locking gear 3 can be continuously remained in the outer cavity of the locking gear and extrude the gear compression spring 2.

When the mechanism needs to be unfolded, the main spring button is pressed firstly, the traction wire is tightened upwards again, the locking piece 6 is slid upwards and the guide piece 4 is lifted upwards again by the traction wire, and then the seat stump plug-in 1, the gear adjusting piece 5 and the seat stump large joint 7 are completely opened, so that the spring button can be loosened, and the traction wire is released; at this time, on one hand, the locking member 6 is simultaneously inserted into the lower sliding cavity and the locking notch 705 of the locking member to lock the joint of the seat stump large joint 7 and the gear adjusting member 5, and on the other hand, as the guide member 4 falls back due to release of the traction wire and the outside cavity of the locking gear and the inside cavity of the locking gear coincide again, the locking gear 3 is immediately pushed inwards between the outside cavity 103 of the locking gear and the inside cavity 503 of the locking gear under the elastic force of the gear pressure spring 2, so that joint locking of the seat stump plug-in 1 and the gear adjusting member 5 is realized.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and those skilled in the art can make various modifications and variations. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a baby's shallow sits stifle folding mechanism which characterized in that: the sitting stump plug-in component comprises a sitting stump plug-in component (1), a gear pressure spring (2), a locking gear (3), a guide component (4), a gear adjusting component (5), a traction wire, a locking component (6), a sitting stump large joint (7), a front handrail socket (8) and a surrounding rod (9); the rotation center points of the sitting stump plug-in component (1), the locking gear (3), the guide component (4), the gear adjusting component (5), the sitting stump large joint (7) and the front handrail socket (8) are all located on the same axis;

the gear adjusting part (5) consists of a gear adjusting part body (501) and a surrounding rod socket (502) arranged on the gear adjusting part body (501), a locking gear inner side cavity (503) taking the rotation central point as the center is arranged on the outer side surface of the gear adjusting part body (501), and a guide part installation cavity (504) taking the rotation central point as the center is arranged on the bottom surface cavity wall of the locking gear inner side cavity (503); the guide piece (4) can be rotatably arranged in the guide piece mounting cavity (504) around the rotation central point, an inclined plane convex block (505) used for lifting the guide piece (4) outwards or resetting the guide piece inwards along with forward and reverse rotation of the guide piece is arranged on the wall of the bottom surface cavity of the guide piece mounting cavity (504), and an inclined plane groove (401) capable of being in sliding fit with the inclined plane convex block (505) is arranged on the inner side surface of the guide piece (4);

the sitting stump plug-in (1) consists of a sitting stump plug-in body (101) and a gear adjusting piece outer side cover plate (102) arranged on the sitting stump plug-in body (101), a locking gear outer side cavity (103) is arranged on the inner side surface of the gear adjusting piece outer side cover plate (102), the gear adjusting piece outer side cover plate (102) is fixedly covered on the outer side surface of the gear adjusting piece body (501), and the locking gear (3) can be axially and slidably arranged in a cavity formed by the locking gear inner side cavity (503) and the locking gear outer side cavity (103); the gear compression spring (2) is arranged between the gear adjusting piece outer side cover plate (102) and the locking gear (3), and the locking gear (3) is tightly attached to the outer side surface of the guide piece (4); when the guide piece (4) is lifted outwards due to forward rotation, the guide piece (4) pushes the locking gear (3) to completely slide into the locking gear outer side cavity (103) outwards, and when the guide piece (4) is reset inwards due to reverse rotation, the gear pressure spring (2) pushes the locking gear (3) inwards to slide between the locking gear outer side cavity (103) and the locking gear inner side cavity (503);

the lower end of the surrounding rod (9) is inserted into the surrounding rod socket (502), and an up-and-down through locking piece upper sliding cavity is arranged in the surrounding rod socket (502); a locking piece inner side lower sliding groove (506) which is communicated with the locking piece upper sliding cavity and the guide piece mounting cavity (504) is formed in the outer side surface of the gear adjusting piece body (501); a locking piece outer side lower sliding groove (301) is formed in the inner side face of the locking gear (3), the locking piece outer side lower sliding groove (301) and the locking piece inner side lower sliding groove (506) are combined to form a locking piece lower sliding cavity, the locking piece lower sliding cavity and the locking piece upper sliding cavity are in a straight line and form a locking piece sliding cavity, and the locking piece (6) is arranged in the locking piece sliding cavity in a vertically sliding mode;

one end of the traction wire is connected with a traction wire retracting mechanism positioned on the surrounding rod (9), the other end of the traction wire is connected with the guide piece (4) through the inside of the surrounding rod (9) and the sliding cavity of the locking piece in sequence, and the traction wire penetrates through the locking piece (6) and is connected with the locking piece (6) when passing through the sliding cavity of the locking piece; the guide piece (4) realizes forward and reverse rotation through traction or release of the traction wire, and the locking piece (6) realizes withdrawal or insertion into a lower sliding cavity of the locking piece through traction or release of the traction wire;

a first inner ring groove (507) and a first outer ring groove (508) which take the rotation central point as the center are formed in the outer side surface of the gear adjusting piece body (501); the big joint (7) is composed of a big joint body (701) and an inner side cover plate (702) of a gear adjusting piece, wherein the inner side cover plate (702) is arranged on the big joint body (701), the outer side surface of the inner side cover plate (702) of the gear adjusting piece is provided with a first inner ring convex ring (703) and a first outer ring convex ring (704) which take the rotation central point as the center, the inner side cover plate (702) of the gear adjusting piece can rotationally cover the inner side surface of the gear adjusting piece body (501) around the rotation central point, the first inner ring convex ring (703) is in sliding fit with the first inner ring groove (507), and the first outer ring convex ring (704) is in sliding fit with the first outer ring groove (508); meanwhile, a locking notch (705) which can be overlapped with a lower sliding cavity of the locking piece is formed in the first outer ring convex ring (704), and the locking piece (6) is inserted into the lower sliding cavity of the locking piece and the locking notch (705) simultaneously to lock an inner side cover plate (702) of the gear adjusting piece;

a second inner ring groove (706) and a second outer ring groove (707) which take the rotation central point as the center are arranged on the inner side surface of the inner side cover plate (702) of the gear adjusting piece; and a second inner ring convex ring (801) and a second outer ring convex ring (802) which take the rotation central point as the center are arranged on the outer side surface of the front armrest socket (8), the front armrest socket (8) can cover the inner side surface of the inner side cover plate (702) of the gear adjusting piece in a rotating mode around the rotation central point, the second inner ring convex ring (801) is in sliding fit with the second inner ring groove (706), and the second outer ring convex ring (802) is in sliding fit with the second outer ring groove (707).

2. The baby stroller pocket folding mechanism according to claim 1, wherein: a folding handle (10) is arranged on the outer side surface of the outer side cover plate (102) of the gear adjusting piece.

3. The baby stroller pocket folding mechanism according to claim 1, wherein: a circle of pressure spring caulking grooves (302) used for fixing the gear pressure spring (2) are formed in the outer side face of the locking gear (3).

4. The baby stroller pocket folding mechanism according to claim 1, wherein: preceding handrail socket (8) medial surface is provided with preceding handrail socket and rotates spacing post (803), be provided with on the medial surface of fender position regulating part inboard apron (702) and use rotate central point and be central arc hole (708), preceding handrail socket rotates spacing post (803) and inlays to establish slidable in arc hole (708).

5. The baby stroller pocket folding mechanism according to claim 1, wherein: the traction wire retracting mechanism is composed of a spring button and a spring button seat (11), the spring button seat (11) is used for controlling the retraction of the traction wire, the spring button seat (11) is arranged in the middle of the top end of the surrounding rod (9), the spring button is installed on the spring button seat (11), and the spring button controls the traction or the release of the traction wire through the pressing or the bouncing of the spring button.

6. The baby stroller pocket folding mechanism according to claim 1, wherein: the novel traction wire fixing device is characterized in that two opposite guide piece rotation limiting grooves (402) are formed in the circumferential surface of the guide piece (4), first traction wire fixing anchor points (403) used for fixing the traction wires are arranged on the circumferential surface of the guide piece (4), meanwhile, two opposite guide piece rotation limiting blocks (509) are arranged on the annular inner wall of the guide piece mounting cavity (504), and the two guide piece rotation limiting blocks (509) are respectively located in the two guide piece rotation limiting grooves (402).

7. The baby stroller pocket folding mechanism according to claim 1, wherein: a traction wire through groove (601) which is through up and down is formed in the outer side surface of the locking piece (6), a traction wire second fixing anchor point (602) used for fixing a traction wire is arranged in the traction wire through groove (601), and the traction wire second fixing anchor point (602) is located at the lower part of the locking piece (6); simultaneously, the upper portion of locking piece (6) is provided with protruding portion (603) of going up to the outside, the lower part of locking piece (6) is provided with protruding portion (604) down to the inside, be provided with a locking piece on the locking piece outside inner wall in slip chamber and slide spacing groove (510), go up protruding portion (603) with the locking piece slides spacing groove (510) sliding fit, protruding portion (604) down with locking breach (705) connect the cooperation of inserting.

8. The baby stroller pocket folding mechanism according to claim 7, wherein: the locking piece slides the tank bottom surface in spacing groove (510) and is provided with guide rib (511), go up be provided with on the lateral surface of bulge (603) inwards with guide way (605) of traction wire logical groove (601) intercommunication, guide rib (511) with guide way (605) sliding fit.

9. The baby stroller pocket folding mechanism according to claim 8, wherein: the locking piece upper sliding cavity is composed of a locking piece inner side upper sliding groove (512) and a locking piece inner side upper sliding groove cover plate.

10. The baby stroller pocket folding mechanism according to claim 1, wherein: be provided with one on the medial surface of fender position regulating part outer side apron (102) and follow folding cavity pivot (104) that the central point axial of rotation extends, folding cavity pivot (104) pass in proper order locking gear (3) guide (4) keep off position regulating part body (501) with keep off behind the rotation central point of the inboard apron of regulating part (702) with the rotation central point of preceding handrail socket (8) aligns, preceding handrail socket (8) are inserted through one from its rotation central point the round pin axle of folding cavity pivot (104) with keep off position regulating part outer side apron (102) and connect.

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