CN208963151U - Perambulator with Collapsible seat structure - Google Patents

Abstract

This application involves the perambulators for having Collapsible seat structure, including the armchair structure being connected on body frame structure for automotive, the armchair structure includes upper chair frame, lower chair frame and preceding chair frame, further include chair frame folding joint and can unlock the armchair structure and body frame structure for automotive and the upper chair frame step by step, second folding control mechanism of the lower chair frame and the preceding chair frame, the upper chair frame, the lower chair frame and the preceding chair frame are hinged and when the armchair structure is unfolded to use by the upper chair frame by the chair frame folding joint, the lower chair frame and the mutual locking positioning of preceding chair frame, the second folding control mechanism is connect to control the chair frame folding joint and unlock and fold with the chair frame folding joint.The application's is designed to provide the perambulator with Collapsible seat structure, and by the optimization of structure, folding is more abundant, and folding convenient is quick, folds deutomerite save space, easily facilitates storage and carrying.

Description

Perambulator with Collapsible seat structure

[technical field]

This application involves perambulator fields, more particularly to the perambulator with Collapsible seat structure.

[background technique]

Foldable baby carriage is popularized in each family, and existing folding baby carrier generally comprises body frame structure for automotive and seat Structure can only have body frame structure for automotive that can fold, in order to enable perambulator is in, storage, trip carrying etc. are more convenient to use, it is empty to save Between, need more optimal foldable structure.

[summary of the invention]

In order to solve the above technical problems, the application's is designed to provide the perambulator with Collapsible seat structure, lead to The optimization of structure is crossed, folding is more abundant, and folding convenient is quick, folds deutomerite save space, easily facilitates storage and carrying.

The application is achieved through the following technical solutions:

Perambulator with Collapsible seat structure, including the armchair structure being connected on body frame structure for automotive, the armchair structure Including upper chair frame, lower chair frame and preceding chair frame, further includes chair frame folding joint and can unlock the armchair structure and vehicle frame knot step by step Second folding control mechanism of structure and the upper chair frame, the lower chair frame and the preceding chair frame, the upper chair frame, the lower chair On frame and the preceding chair frame are hinged and will be described when the armchair structure is unfolded to use by the chair frame folding joint Chair frame, the lower chair frame and the mutual locking positioning of preceding chair frame, described second folds control mechanism and chair frame folding pass Section connection is unlocked and is folded to control the chair frame folding joint.

The perambulator as described above for having Collapsible seat structure, the chair frame folding joint includes: upper chair frame connector, Its first connecting portion for being equipped with the first articulated section and connecting with the upper chair frame, first articulated section are equipped with first axle Hole is located at the described first hinged end surface and along the first cant protrusion of first shaft hole periphery setting and along described first First tooth socket of cant protrusion periphery setting, the end face opposite with first tooth socket is equipped with along institute on first articulated section State the second tooth socket of first shaft hole periphery setting；First rotation top convex body, circumference is equipped with to match with the first cant protrusion The the first cant portion closed, is internally provided with the card hole for transmitting rotary power, and first rotation top convex body is co-axially located at In the installation that is circumferentially staggered in first articulated section and with the first cant protrusion, first rotation top convex body rotates when institute Stating the first cant portion and climbing along the first cant protrusion makes the first rotation top convex body toward axial ejection；First latching tooth, Inlay card is in first tooth socket, and one end and an end face of first rotation top convex body offset, first rotation top Convex body is detached from first tooth socket toward the first latching tooth past be axially moved is pushed when axial ejection；Wheel-chair connector, sets The second connecting portion for having the second articulated section and connecting with the body frame structure for automotive, second articulated section, which is equipped with, to be circumferentially arranged Third tooth socket, the first latching tooth in axial part inlay card in the third tooth socket, the first latching tooth and the third The axial gap for first latching tooth axial movement is equipped between in tooth socket, first rotation top convex body is detached from described first It is free to rotate between the armchair structure and body frame structure for automotive when tooth socket.

The perambulator as described above for having Collapsible seat structure, the chair frame folding joint further include: the second rotation top Convex body is equipped with rotating base, is circumferentially arranged along the axially extended axis of the rotating base and along in the rotating base The second cant portion, second cant portion is equipped with one second pulling portion, and the axis is axially extending along the rotating base And it passes through the first shaft hole and puts in the card hole of first rotation top convex body；Second latch is equipped with and rotates chamber, and described turn In bottom circumferentially arranged with the second cant protrusion, second latch is inlaid in second tooth socket dynamic chamber, second card The axial gap for second latch axial movement is equipped between in tooth and second tooth socket, the rotating base is coaxially embedding Mounted in intracavitary and second cant portion of the rotation and the second cant protrusion in the installation that is circumferentially staggered, second cant Have between portion and second cant protrusion along the stroke gap of second cant portion rotation direction, second rotation top Second cant portion described in when convex body rotates, which first turns over the stroke gap and climbs again along the second cant protrusion, makes described second Latch is detached from second tooth socket toward axial movement；Lower chair frame connector, be equipped with third articulated section and with the lower chair The third interconnecting piece of frame connection, the third articulated section are equipped with the 4th tooth socket being circumferentially arranged, and second latch is in axial direction Part inlay card in the 4th tooth socket；Preceding chair frame connector is equipped with the 4th articulated section and connect with the preceding chair frame 4th interconnecting piece, the 4th articulated section are hinged with the third articulated section, and second latch is detached from institute toward axial movement The upper chair frame, the lower chair frame and the preceding chair frame can be freely rotated around its common hinged place when stating the second tooth socket.

The perambulator as described above for having Collapsible seat structure, the second folding control mechanism includes: package assembly, It is fixed in the upper chair frame；Internal member is set in the package assembly, and the internal member is equipped with sliding slot and described The second feather key slided in sliding slot, second feather key are equipped with the gear transfer part moved with the second feather key glide direction, institute It states the gear for being equipped between the second feather key and the internal member and resetting for the gear transfer part and turns reset spring；Switching part, hinge are set On the internal member, the switching part is equipped with the card transfer part for protruding from the switching part peripheral surface, rotates the switching The card transfer part and the gear transfer part are in radial intersection, gear transfer part gear when by the switching part switching to first angle when part The rotation of the residence transfer part Shu Ka.

Compared with prior art, the application has the following advantages:

The application is by structure optimization, and folding is more abundant, and folding convenient is quick, folds deutomerite save space, easily facilitates Storage and carrying.

[Detailed description of the invention]

In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment Attached drawing is briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application, for For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other Attached drawing.

Fig. 1 is that the perspective exploded view of use state is unfolded in the perambulator of the embodiment of the present application；

Fig. 2 and Fig. 3 is the stereoscopic schematic diagram of two kinds of different folded states of the embodiment of the present application；

Fig. 4 is the enlarged drawing in the portion A in Fig. 1；

Fig. 5 is the enlarged drawing in the portion B in Fig. 2；

Fig. 6 is the partial sectional view in the direction K in Fig. 4；

Fig. 7 is that the first control for folding that control mechanism pushes and pulls connector to described second described in the embodiment of the present application is illustrated Figure；

Fig. 8 is the connection schematic diagram of positive lock structure and the positive lock relief structure described in the embodiment of the present application；

Fig. 9 to Figure 11 is the first folding control mechanism described in the embodiment of the present application in different decomposition degree and in difference The perspective exploded view of angle；

The second rotation top convex body and institute under use state is unfolded for the armchair structure of the embodiment of the present application in Figure 12 State the location status schematic diagram of the second latch；

Figure 13 and Figure 14 is that the stereo decomposing of two different angles of the chair frame folding joint of the embodiment of the present application shows It is intended to；

Figure 15 is enlarged drawing of the Figure 13 in the portion E；

Figure 16 is enlarged drawing of the Figure 13 in the portion F；

Figure 17 is the perspective exploded view of the linkage folding joint of the embodiment of the present application；

Figure 18 is the unfolded state schematic diagram of the linkage folding joint of the embodiment of the present application；

Figure 19 is the folded state schematic diagram of the linkage folding joint of the embodiment of the present application；

Figure 20 and Figure 21 is that the stereo decomposing of two different angles of the second folding control mechanism of the embodiment of the present application shows It is intended to；

Figure 22 to Figure 24 is that the switching part in the second folding control mechanism of the embodiment of the present application is folded in armchair structure Status diagram in journey；

Figure 25 is the connection schematic diagram of main brake and the auxiliary brake described in the embodiment of the present application；

Figure 26 and Figure 27 is the perspective exploded view of two different angles of the main brake of the embodiment of the present application, wherein scheming Rear frame and the first rear-wheel are also shown in 26, and Figure 27 also shows Rear frame；

Figure 28 is the perspective exploded view of auxiliary brake described in the embodiment of the present application；

Figure 29 is the cross-sectional view in the direction J in Fig. 1；

Figure 30 is the portion the H enlarged drawing of Figure 29；

Figure 31 is the portion the G enlarged drawing of Figure 27；

Figure 32 is the structural schematic diagram of step block described in the embodiment of the present application；

Figure 33 is the perspective exploded view of the arm-rest frame of the application；

Figure 34 is the enlarged drawing in the portion C in Figure 33；

Figure 35 is the enlarged drawing in the portion D in Figure 33.

[specific embodiment]

The technical issues of in order to keep the application solved, technical solution and beneficial effect are more clearly understood, below in conjunction with The application is further elaborated in accompanying drawings and embodiments.It should be appreciated that specific embodiment described herein is only used To explain the application, it is not used to limit the application.

As shown in Fig. 1 to Figure 35, the embodiment of the present application propose can fast folding perambulator comprising seat interconnected Structure 1 and body frame structure for automotive 2, the body frame structure for automotive 2 includes front frame 21, Rear frame 22 and the arm-rest frame 23 being hinged, described Linkage folding joint 3 is additionally provided on body frame structure for automotive 2, locking bindiny mechanism 4 and first folds control mechanism 5.

Referring to Fig. 8 and Figure 17 to Figure 19, the linkage folding joint 3 is set to the front frame 21, the Rear frame 22 With the common hinged place of the arm-rest frame 23, for driving the front frame 21 and the arm-rest frame 23 while relatively rotating；Institute State linkage folding joint 3 include the front truck frame connector 31 being connect with the front frame 21, connect with the Rear frame 22 after Frame connecting piece 32 and the handrail frame connector 33 connecting with the arm-rest frame 23, the rear car frame connector 32 are equipped with hole The length direction strip guide hole 321 parallel with the Rear frame 22, the front truck frame connector 31,32 and of rear car frame connector The end of the handrail frame connector 33 is mutually hinged to form coaxial articulated section 1a；The linkage folding joint 3 further includes first Interlocking bar 34 and the second interlocking bar 35, described first interlocking bar, 34 one end and described second interlocking bar, 35 one end are hinged to be formed directly Dynamic articulated section 2a, the direct acting articulated section 2a are located at the hole length direction in the strip guide hole 321 along the strip guide hole 321 Sliding, 34 other end of the first interlocking bar and the handrail frame connector 33 are hinged to form the first rotation articulated section 3a, institute It states 35 other end of the second interlocking bar and the front truck frame connector 31 is hinged to form the second rotation articulated section 4a, described first turn Dynamic articulated section 3a and the second rotation articulated section 4a are separately positioned on the circumference of coaxial two opposite side articulated section 1a, and institute It states the first rotation articulated section 3a and the second rotation articulated section 4a forms bias with the coaxial articulated section 1a respectively, it is described Rear car frame connector 32 be equipped with for limit it is described first rotation articulated section 3a rotational travel the first long arc-shaped holes 5a and For limiting the second long arc-shaped holes 6a of the second rotation articulated section 4a rotational travel, the first rotation articulated section 3a is around institute It states and the direct acting articulated section 2a is pushed to slide when coaxial articulated section 1a rotation along the hole length direction of the strip guide hole 321, thus The direct acting articulated section 2a that links pulls the second rotation articulated section 4a to rotate around the coaxial articulated section 1a, completes the vehicle The linkage jackknife action of frame structure 2.It should be noted that handrail frame connector described in the present embodiment 33 is set, there are two simultaneously symmetrical The two sides of the rear car frame connector 32 are located at, two rivetings of handrail frame connector 33 form the first rotation articulated section 3a, The first rotation articulated section 3a passes through the first long arc-shaped holes 5a and the activity in the first long arc-shaped holes 5a.Linkage folding Occupied space is smaller after folded joint 3 enables perambulator sufficiently to fold and fold, easy to carry and storage, in addition, the structure of linkage It is simpler convenient to use.

Referring to fig. 4 to Fig. 5, locks bindiny mechanism 4 and be located between the front frame 21 and the Rear frame 22, be used for institute It states body frame structure for automotive 2 and is locked in expansion use state；The locking bindiny mechanism 4 includes locking connector 41 and the Rear frame 22 slide bars 42 disposed in parallel and the closing piece 43 being slidably attached on the slide bar 42, the locking connector 41 1 End hinge is located in the front frame 21, and other end hinge is located on the closing piece 43, and lockhole 431 is offered on the closing piece 43, is had Body, the closing piece 43 offers slide opening, and the closing piece 43 is set on the slide bar 42 to form sliding by the slide opening Connection.When closing piece 43 slides to position as shown in Figure 4, locking connector 41 and 21 Rear frame 22 of front frame form a triangle Support construction, the stability based on triangle enable perambulator to stablize in unfolded state, and structure is simple, and makes perambulator Unfolded state after expansion is more stable, reliable, safe.

In order to which the body frame structure for automotive 2 reinforcement is further locked in expansion use state, so that the expansion of perambulator uses shape State is further stable, reliable, safe to ensure children's safety to a greater extent, is additionally provided with pressure on the linkage folding joint 3 Locking structure, the positive lock structure include: lock shaft 61, are located on the handrail frame connector 33 and along the coaxial hinge Socket part 1a is circumferentially arranged, and the lock shaft 61 is made during the body frame structure for automotive 2 unfolds and folds around the coaxial articulated section 1a Circumferential movement；Locking plate 62 is rotated, be hinged on the rear car frame connector 32 and is circumferentially arranged along the coaxial articulated section 1a, The rotation locking plate 62 is equipped with the latch hook 622 for locking the lock shaft 61, and the rotation locking plate 62 is by rotation in a lock Switch between piece latched position and a locking plate unlocked position, the rotation locking plate 62 goes to latch hook when locking plate latched position 622 catch on the lock shaft 61 to lock the lock shaft 61, and the rotation locking plate 62 is 32 hinged place of rear car frame connector Equipped with the reverse reset spring 624 for reset.

Such as Fig. 6 to Figure 11, the first folding control mechanism 5 is located in the Rear frame 22, for locking or unlocking the lock Bindiny mechanism 4 is determined to expansion or folds the body frame structure for automotive 2；The first folding control mechanism 5 includes: connecting rod 53, Both ends are fixedly connected in the Rear frame 22, and the connecting rod 53 is equipped with the sliding chamber 531 of strip, in the outer of the connecting rod 53 The portion of fending off 532 is further fixed on week；Swingle 51 can be set in the connecting rod 53 around the connecting rod 53 in which rotate coaxially Outside, the swingle 51 are circumferentially equipped with the rotation slot 522 that the portion 532 that fends off is packed into when the swingle 51 rotation, It is equipped with rotating drum 521 in the swingle 51, offers cone tank 5211 in the rotating drum 521, the cone tank 5211 Groove width is circumferentially reduced along cavity wall, and the rotating handles 52 for driving the swingle 51 to rotate are additionally provided on the swingle 51, The rotating handles 52 be equipped with can along the first feather key 523 that the rotating handles 52 axially slide and with first feather key 523 connect and slide the backing pin 524 to put in the rotation slot 522, first feather key 523 with first feather key 523 It is equipped with backing pin reset spring between the rotating handles 52, is equipped with and is used between the rotating handles 52 and the connecting rod 53 The handle reset spring that the rotation of rotating handles 52 resets；Pull element 54 is located in the sliding chamber 531 of the strip, described Pull element 54 includes the first drawing block 541 and the second drawing block 542, and the first drawing block 541 and described second pull block 542 are disposed opposite to each other and are equipped with the first compressed spring 10 between the first drawing block 541 and the second drawing block 542, described First drawing block 541 is equipped with the first axle matched with the cone tank 5211 and pushes away inclined-plane 5411, the second drawing block 542, which are equipped with the second axis matched with the cone tank 5211, pushes away inclined-plane 5412, and the first axle pushes away inclined-plane 5411 and second Axis pushes away inclined-plane 5412 and contacts respectively with the cell wall of the cone tank 5211；Lock core 55, the swingle 51 is interior to be equipped with lock road 511, The lock core 55 is located in the lock road 511, and the second compression for ejecting the lock core 55 outward is equipped in the lock road 511 Spring 20, offers lockhole 431 on the closing piece 43, the expansion of body frame structure for automotive 2 when using the lock core 55 put in the lock To lock the closing piece 43 in hole 431.It is equipped between the lock core 55 and the first drawing block 541 for by the lock core 55 It is pulled out out of described lockhole 431 to unlock the first drawstring 40 of the locking bindiny mechanism 4.Described first, which folds control mechanism, leads to A key control is crossed, quickly control perambulator is can be convenient and switches between state folding and unfolding, in addition, must before folding baby carrier The first feather key must first be slided and rotate rotating handles could start to fold after unlocking locking bindiny mechanism, it in this way can be effectively pre- Accident is caused in the case where false-touch prevention control button, substantially increases the safety that perambulator uses, in another aspect, passing through rotation handle Hand rotation unlock is not only more laborsaving, but also can directly lift handle after unlock and folding baby carrier and carry perambulator, convenient fast It is prompt.

It should be noted that the linkage folding joint and the first folding control mechanism are equipped with described for unlocking The positive lock relief structure of positive lock structure, Fig. 6 to Figure 11 have shown that positive lock relief structure is folded described first Structure on control mechanism, the positive lock relief structure rotation rotating handles come unlock it is described locking bindiny mechanism it is same Positive lock structure described in Shi Xiesuo.Specifically, the positive lock relief structure includes: movable span 623, is located at described It rotates on locking plate 62, locking bit 6231 is equipped in the movable span 623, lock-bit 6233, the sliding position are conciliate in sliding position 6232 6232 both sides are connected with the locking bit 6231 and 6233 phase of solution lock-bit respectively；Movable axis 71 is set to the movable span Switch in 623 and between the locking bit 6231 and the solution lock-bit 6233 to drive the rotation locking plate 62 to rotate；First Connector 74 is pushed and pulled, the upper end is connected on the movable axis 71 to drive the movable axis 71 to transport in the movable span 623 It is dynamic, wherein the first push-and-pull connector 74 and the preferred connection type of the movable axis 71 are welding, naturally it is also possible to hinged；The Two push-and-pull connectors 75, the upper end and first push-and-pull, 74 lower end of connector are hinged, second push-and-pull, 75 lower end of connector Equipped with for driving the second push-and-pull connector 75 to carry out the cunning convex 751 of push pull maneuver；Connection cover 76 is set in the Rear frame It is fixedly connected on 22 and with described 53 one end of connecting rod, the connection cover 76 is equipped with push-and-pull blind hole 761, and second push-and-pull connects Fitting 75 is slideably installed in the push-and-pull blind hole 761, and the push-and-pull blind hole 761 is set towards 53 side of connecting rod There is strip-shaped hole 7611, the cunning convex 751 is stretched out from the strip-shaped hole 7611 to translate along the 7611 hole length direction of strip-shaped hole Movement is to push and pull the second push-and-pull connector 75, between 761 bottom of push-and-pull blind hole and the second push-and-pull connector 75 Equipped with the 5th compressed spring 100；Swivel head 77, is located at 51 end of swingle, and the swivel head 77 is equipped with arcwall face 771, the arcwall face 771 includes distal shaft position 7711 and close 51 axle center of swingle far from 51 axle center of swingle Paraxial position 7712, the cunning convex 751 are close to 771 inside of arcwall face, and the swivel head 77 is rotated with the rotating handles 52 When, the cunning convex 751 switches between the distal shaft position 7711 and the paraxial position 7712 to drive the cunning convex 751 along described 7611 hole length direction of strip-shaped hole makees translational motion.When unlocking the positive lock structure, rotating handles 52, rotation are first rotated Handle 52 drives swingle 51 to rotate around connecting rod 53, and the arcwall face 771 on swivel head 77 rotates with, force sliding convex 751 from Distal shaft position 7711 slides to paraxial position 7712, while sliding convex 751 move in strip-shaped hole 7611 to close radially of the axis of rotation, and cunning is convex 751 drive the second push-and-pull connector 75 direction into hole in push-and-pull blind hole 761 mobile when mobile, the first push-and-pull connector 74 Movable axis 71 is pulled to slide to solution lock-bit 6233 from the locking bit 6231 of movable span 623 with the movement of the second push-and-pull connector 75, Driving rotation locking plate 62 rotates, so that latch hook 622 be made to be detached from lock shaft 61, completes the unlock of positive lock structure.Similarly, work as rotation Rotating handles 52 can be such that positive lock structure relocks when inverting, and in order to reinforce the active force resetted, the rotation lock Piece 62 is that 32 hinged place of rear car frame connector is equipped with the reverse reset spring 624 for reset, the push-and-pull blind hole 761 The 5th compressed spring 100 is equipped between bottom and the second push-and-pull connector 75.By the above positive lock relief structure, only Need ease rotation rotating handles that can unlock the positive lock structure, structure letter while unlocking the locking bindiny mechanism It is single, it is easy to operate.

Further, the armchair structure 1 is equipped with plug 101, and the body frame structure for automotive 2 is equipped with socket 201, described Plug 101 is removably inserted into the socket 201 so that the armchair structure 1 is removably mounted on the vehicle frame knot On structure 2, the armchair structure 1 180 degree can turn ground anti-plug on the body frame structure for automotive 2 to realize different uses up and down Demand, wherein plug 101 is equipped with elastic card convex, and the buckle being adapted to the elastic card convex is equipped in socket 201 so as to insert First 101 can steadily insert in the socket 201, so that its abjection buckle then may be used by pressing the elastic card convex To extract the plug 101 out of socket 201；

The socket 201 is coaxial hinged with the linkage folding joint 3, and the socket 201 is equipped with card turn hole 202, the cunning convex 751 of the second push-and-pull 75 lower end of connector can put in described when driving the second push-and-pull progress push pull maneuver of connector 75 Card turn hole 202 is described to prevent the socket 201 rotation or exit the card turn hole 202 so that socket 201 rotates freely Socket 201 when rotating freely the armchair structure 1 can the relatively described body frame structure for automotive 2 be freely rotated.From the above it is found that rotation Handle hand-drive swivel head 77 rotates, and translational motion is made in the driving of swivel head 77 sliding convex 751, and sliding convex 751 drive the second push-and-pull connection Part 75 makees push pull maneuver, and the second push-and-pull connector 75 puts in or exit the card turn hole 202 to control the socket 201 Rotation is to control rotary folding of the armchair structure 1 relative to the body frame structure for automotive 2, in conclusion i.e. rotation rotation handle Hand not only can unlock the positive lock structure while unlocking the locking bindiny mechanism, can also make simultaneously described Armchair structure 1 can be rotated freely relative to the body frame structure for automotive 2, and above-mentioned technical proposal controls multiple knots by a control mechanism The state of structure is folded with carrying out, and the operation of folding is significantly simplified, so that perambulator is more convenient to use.

Wherein, linkage folding joint 3, locking bindiny mechanism 4 and the first folding control mechanism 5 collectively form linkage of unlocking Structure.

Further, as shown in Figure 25 to Figure 32, the Rear frame 22 is equipped with the first rear-wheel 24, the second rear-wheel 25, uses Stop the main brake 26 of first rear-wheel 24 in brake and driven by the main brake 26 to stop second rear-wheel 25 for stopping Auxiliary brake 27, first rear-wheel 24 were equipped with main brake hole 241 along wheel shaft one week；The main brake 26 includes and the Rear frame The wheel shaft mounting bases 261 of 22 connections, equipped with the step block that can be rotated around 24 wheel shaft of the first rear-wheel in the wheel shaft mounting base 261 28, the step block 28 is equipped with brake sliding block 281, and 261 periphery of wheel shaft mounting base is equipped with the brake sliding block 281 often That sets lives the brake recess 2612 of braking state surely when often setting recess 2611 and brake, the brake sliding block 281 is with the step block 28 rotations are slided between recess 2611 and the brake recess 2612 in described often set；It is described often to set recess 2611 and the brake 2612 bottom of recess is taper and is disposed adjacent；The brake sliding block 281 be equipped with make its resist it is described often set recess 2611 or The sliding block reset spring 300 of the brake recess 2612, on the step block 28 and the wheel shaft mounting base 261 between be equipped with and make The step block 28 tends to the step block reset spring for often setting recess 2611, is additionally provided on the step block 28 and pulls the auxiliary brake 27 third drawstring 60；The wheel shaft mounting base 261 is equipped with the stretching wheel shaft mounting base 261 and is caught in the main brake hole Realize that the brake pin assemblies 263 of brake, the brake pin assemblies 263 include brake pin shaft 2631 and brake guide in 241 2632, the brake pin shaft 2631 is inserted in the brake guide 2632 and the brake pin shaft 2631 and the brake guide Ejector pin spring 2633 is equipped between 2632, the brake guide 2632 is equipped with stroke hole 263a, sets on the brake pin shaft 2631 There is the stroke shaft 263b put in the stroke hole 263a；It can control the brake pin bank when being additionally provided with rotation on the step block 28 The brake of part 263 or no rotary chute 842, the rotary chute 842 include described in a high position 8421, low level 8422 and connection The slideway 8423 of a high position 8421 and the low level 8422 is equipped between the wheel shaft mounting base 261 and the step block 28 and is used for The brake guide 2632 is set to resist the top cover spring 2634 of the rotary chute 842.Its structure is simple, only need to light step block, Can realize linkage brake, and due to brake sliding block 281 with often set the cooperation of recess 2611 and the recess 2612 that brakes so that brake More accurately and reliably stablize truck position.

Wherein brake process is illustrated as follows: light step block 28, rotary chute 842 rotate, and slide to a high position with slideway 8423 8421 brake guide 2632 is ejected to 24 direction of the first rear-wheel, and the pressure of ejector pin spring 2633 being squeezed makes the pin shaft 2631 that brakes It puts in main brake hole 241, to block the first rear-wheel 24, realizes brake, the sliding block 281 that brakes at this time turns with stepping on for step block 28 from normal It sets recess 2611 and slides to brake recess 2612 to stablize braking state, in addition, rotary chute 842 is logical when rotary chute 842 rotates It crosses and affects third drawstring 60 that auxiliary brake 27 is pulled to realize the brake of the second rear-wheel 25, achieve the effect that step on dual brake.Similarly, it releases Braking state need to only reset step block 28, top cover spring 2634 will brake guide 2632 to far from 24 direction of the first rear-wheel eject with The guide 2632 that makes to brake resists low level 8422, while stroke hole 263a is led by the stroke shaft 263b pull-off of pin shaft 2631 that will brake Spoke hole 241 releases brake.

Wherein, the auxiliary brake 27 includes: accessory whorl axis mounting base 271, is connect with the Rear frame 22, the accessory whorl axis Equipped with the rotating block 29 that can be rotated around 25 wheel shaft of the second rear-wheel in mounting base 271；Auxiliary brake hole, along second rear-wheel The setting of 25 wheel shafts one week；And auxiliary brake pin assemblies 273, it is located in the accessory whorl axis mounting base 271 and stretches out the accessory whorl Axis mounting base 271 realizes brake to be caught in the auxiliary brake hole, and the auxiliary brake pin assemblies 273 include auxiliary brake pin shaft 2731 With auxiliary brake guide 2732, the auxiliary brake pin shaft 2731 is inserted in the auxiliary brake guide 2732 and the auxiliary brake pin shaft Secondary ejector pin spring 2733 is equipped between 2731 and the auxiliary brake guide 2732, the auxiliary brake guide 2732 is equipped with secondary stroke hole 273a, the auxiliary brake pin shaft 2731 are equipped with the secondary stroke shaft put in the secondary stroke hole 273a；On the rotating block 29 Being additionally provided with can control the brake of auxiliary brake pin assemblies 273 or no secondary rotary chute 942 when rotation, the pair rotary chute 942 include the secondary slideway of a secondary high position 9421, secondary low level 9422 and the connection secondary high position 9421 and the secondary low level 9422 9423, it is equipped between the accessory whorl axis mounting base 271 and the rotating block 29 for making the auxiliary brake guide 2732 resist institute State the secondary top cover spring 2734 of secondary rotary chute 942；It is equipped with and turns between on the rotating block 29 and the accessory whorl axis mounting base 271 Motion block reset spring 400；The third drawstring 60 is connect with the rotating block 29 with the third drawstring described when stepping step block 28 60 pull the rotating block 29 to rotate.The above-mentioned structure for brake makes the brake of perambulator gentler, reliably.

When rotary chute 842 passes through the process for the brake for affecting third drawstring 60 that auxiliary brake 27 is pulled to realize the second rear-wheel 25 In, third drawstring 60 pulls the rotating block 29 to rotate, and the auxiliary brake guide of a secondary high position 9421 is slided to secondary slideway 9423 2732 eject to 25 direction of the second rear-wheel, and secondary ejector pin spring 2733 pressure being squeezed makes auxiliary brake pin shaft 2731 put in auxiliary brake In hole, to block the second rear-wheel 25, brake is realized, it should be noted that when releasing the braking state of the first rear-wheel 24, rotation Block 29 loses the pulling force of third drawstring 60, and rotating block 29 is rotated and resetted by rotating block reset spring 400 at this time, secondary top cover spring 2734 eject auxiliary brake guide 2732 so that auxiliary brake guide 2732 resists secondary low level 9422 to far from 25 direction of the second rear-wheel, Pair stroke hole 273a passes through secondary stroke shaft for the pull-off auxiliary brake hole of auxiliary brake pin shaft 2731 to release brake simultaneously.

As shown in Figure 33 to Figure 35, the arm-rest frame 23 includes upper armrest support 231 and 231 sets of the upper armrest support The lower armrest support 232 that connects and it is fixed on the handle-adjusting device that on the upper armrest support 231 can control handrail flexible；Institute State the limit that handle-adjusting device includes the fixing seat 234 being mounted on armrest support 231, is fixed in the fixing seat 234 Position block 235, the movable block 236 that can be moved in the limited block 235 and the elasticity that the movable block 236 can be driven mobile are pressed Button 237, the movable block 236 are equipped with the 4th drawstring 70, and the movable block 236 pulls when moving in the limited block 235 4th drawstring 70；The handle-adjusting device further includes the clip pedestal 238 for being fixed on armrest support 231, is set in Along the flexible sliding block 239 that handrail telescopic direction moves and edge in the clip pedestal 238 is set in the clip pedestal 238 Perpendicular to the clip sliding block 230 of handrail telescopic direction movement, the flexible sliding block 239 is connect with the 4th drawstring 70, described Lower armrest support 232 is equipped with several clip holes along the distribution of handrail telescopic direction, and the clip sliding block 230 can stick into described So that the upper armrest support 231 and 232 mutually locking of lower armrest support in clip hole, set on the clip sliding block 230 There is slanting plagioclase hole 2301, the flexible sliding block 239 slides in the plagioclase hole 2301 so that 239 edge of flexible sliding block Edge moves handrail telescopic direction perpendicular to handrail telescopic direction in the clip sliding block 230 when moving.Structure is simple, can be with a key Realize the flexible of arm-rest frame 23, it is convenient and efficient, it is practical.

Vehicle frame knot is described below in the perspective exploded view being unfolded under use state in body frame structure for automotive 2 as can be seen from Figure 1 The folding process of structure 2: first slide first fold control mechanism 5 on the first feather key 523, backing pin 524 with the first feather key 523 from turn Then the rotation space for retracting and reserving the portion of fending off 532 in dynamic slot 522 rotates rotating handles 52, the cone tank in rotating drum 521 5211 rotate with it, and push the first drawing block 541 in pull element 54 and the second drawing 542 relative motion of block, realize first The drawing of drawstring 40 acts, so that lock core 55 be pulled out out of described lockhole 431, has unlocked the lock lockked originally by lock core 55 Block 43, that is, relieve the locking of front frame 21 and Rear frame 22, then pulls arm-rest frame 23, and linkage folding joint 3 drives front truck Frame 21 and arm-rest frame 23 are rotated to close to 22 direction of Rear frame simultaneously, realize the folding of body frame structure for automotive 2.Similarly, body frame structure for automotive 2 Expansion process only needs opposite direction to rotate rotating handles 52, and the sliding of the first feather key 523 pulls gear under the action of backing pin reset spring Pin 524, which is put in the rotation slot 522, to prevent rotating handles 52 from rotating, to be done so the maloperation that handle can be effectively prevented and leads The safety accident of cause, next pulls arm-rest frame 23, and linkage folding joint 3 drives front frame 21 with arm-rest frame 23 simultaneously to separate The rotation of 22 direction of Rear frame, realizes the expansion of body frame structure for automotive 2.

The armchair structure 1 includes upper chair frame 11, lower chair frame 12, preceding chair frame 13, chair frame folding joint 14 and the second folding Control mechanism 15, the upper chair frame 11, the lower chair frame 12 and the preceding chair frame 13 are mutual by the chair frame folding joint 14 It is hinged and when the armchair structure 1 is unfolded to use that the upper chair frame 11, the lower chair frame 12 and the preceding chair frame 13 is mutual Locking positioning, the second folding control mechanism 15 are connect to control the chair frame folding joint with the chair frame folding joint 14 14 unlock and fold.

As shown in Figure 12 to Figure 16, the chair frame folding joint 14 includes: upper chair frame connector 141, is equipped with the first hinge Socket part 1411 and the first connecting portion 1412 connecting with the upper chair frame 11, first articulated section 1411 are equipped with first axle Hole 1411e, 1411 end face of the first articulated section and the first cant protrusion along the setting of the periphery the first shaft hole 1411e are located at 1411b and the first tooth socket 1411c being arranged along the first cant periphery protrusion 1411b, in first articulated section 1411 The upper end face opposite with the first tooth socket 1411c is equipped with the second tooth socket being arranged along the periphery the first shaft hole 1411e 1411d；First rotation top convex body 142, circumference are equipped with the first cant portion matched with the first cant protrusion 1411b 1421, it is internally provided with the card hole 1422 for transmitting rotary power, first rotation top convex body 142 is co-axially located at described In the installation that is circumferentially staggered, first rotation top convex body in first articulated section 1411 and with the first cant protrusion 1411b First cant portion 1421 described in when 142 rotation climbs along the first cant protrusion 1411b makes first rotation top convex body 142 Toward axial ejection；First latching tooth 143, for inlay card in the first tooth socket 1411c, one end and first rotation top are convex One end face of body 142 offsets, and first rotation is pushed up pushes the first latching tooth 143 toward axially when convex body 142 is past axially to be ejected It moves and is detached from the first tooth socket 1411c；Wheel-chair connector 144, be equipped with the second articulated section 1441 and with the vehicle frame The second connecting portion 1442 that structure 2 connects, second articulated section 1441 are equipped with the third tooth socket 1441a being circumferentially arranged, institute First latching tooth 143 is stated in axial part inlay card in the third tooth socket 1441a, the first latching tooth 143 and the third Be equipped with the axial gap for the first latching tooth 143 axial movement between in tooth socket 1441a, the first latching tooth 143 with it is described It is equipped with the third for pushing up the first latching tooth 143 toward the first tooth socket 1411c between second articulated section 1441 and compresses bullet Spring；Second rotation top convex body 145, is equipped with rotating base 1451, along the axially extended axis 1452 of the rotating base 1451 And along in the second cant portion 1453 that the rotating base 1451 is circumferentially arranged, second cant portion 1453 is equipped with the Two pulling portion 1454, the axis 1452 is axially extending along the rotating base 1451 and stretches across the first shaft hole 1411e So that second rotation top convex body 145 drives described the when rotating in into the card hole 1422 of first rotation top convex body 142 One rotation top convex body 142 rotates；Second latch 146, be equipped with rotation chamber 1461, the rotation chamber 1461 bottom circumferentially Equipped with the second cant protrusion 1461a, second latch 146 is inlaid in the second tooth socket 1411d, second latch The axial gap for second latch 146 axial movement, the rotation are equipped between in 146 and the second tooth socket 1411d Base portion 1451 is coaxially inlaid in the rotation chamber 1461 and second cant portion 1453 and second cant are raised 1461a is staggered installation circumferentially, with along described the between second cant portion 1453 and the second cant protrusion 1461a The stroke gap 1454a of two cant portions, 1453 rotation direction, it is described second rotation top convex body 145 rotate when described in the second cant Portion 1453, which first turns over the stroke gap 1454a and climbs again along the second cant protrusion 1461a, keeps second latch 146 past It is axially moved and is detached from the second tooth socket 1411d, set between the second rotation top convex body 145 and second latch 146 There is the second rotation top convex body reset spring 200；Lower chair frame connector 147, be equipped with third articulated section 1471 and with it is described under The third interconnecting piece 1472 that chair frame 12 connects, the third articulated section 1471 are equipped with the 4th tooth socket 1471a being circumferentially arranged, institute The second latch 146 is stated in axial part inlay card in the 4th tooth socket 1471a；Preceding chair frame connector 148 is equipped with the Four articulated sections 1481 and the 4th interconnecting piece 1482 being connect with the preceding chair frame 13, the 4th articulated section 1481 and described the Three articulated sections 1471 are hinged.It is equipped with and is used for described second between second latch 146 and the third articulated section 1471 Latch 146 pushes up the 4th compressed spring to the second tooth socket 1411d, and certainly, the 4th compressed spring can also be located at On four articulated sections 1481, the 4th compressed spring passes through the third articulated section 1471 and pushes up second latch 146 to institute State the second tooth socket 1411d.Above-mentioned chair frame folding joint can more easily realize the folding of perambulator, keep its folding more abundant, Save occupied space, easy to carry and storage.

Further, first articulated section 1411 is equipped with the center of circle and the hinged center in first articulated section 1411 weight The first the circular hole 1411a, the first circular hole 1411a closed is equipped with the first beginning 1411aa and first end 1411ab, The third articulated section 1471 is equipped with the second circular hole that the center of circle is overlapped with the hinged center in the third articulated section 1471 1471b, the second circular hole 1471b are equipped with the second beginning 1471ba and second end 1471bb, in the armchair structure 1 It is Chong Die with the first beginning 1411aa that second end 1471bb when use state is unfolded, in the 4th articulated section 1481 One eccentric position is equipped with linkage portion 1481a, be fixed on the linkage portion 1481a through the first circular hole 1411a and The linkage pin shaft of second circular hole 1471b, the third articulated section 1471 first turns to described when the armchair structure 1 folds The state of second beginning 1471ba and the first beginning 1411aa overlapping, when continuing to rotate the third articulated section 1471 described in Second beginning 1471ba drives the linkage pin shaft to go to the second beginning 1471ba and first end 1411ab overlapping State, to realize turning folding for upper chair frame 11, lower chair frame 12 and preceding chair frame 13.The structure can be realized chair frame 11, The linkage of lower chair frame 12 and preceding chair frame 13 is folded to be unfolded with linkage, and clever structure folds more so that perambulator is more convenient to use Add smooth.

As shown in Figure 20 to Figure 24, the second folding control mechanism 15 includes: package assembly 151, is fixed on described In chair frame 11；Internal member 152 is set in the package assembly 151, the internal member 152 be equipped with sliding slot 1521 and The second feather key 1522 slided in the sliding slot 1521, second feather key 1522 are equipped with sliding with second feather key 1522 The gear transfer part 1522a of dynamic direction movement, is equipped between second feather key 1522 and the internal member 152 and turns for the gear The gear that portion 1522a resets turns reset spring；Switching part 153, hinge are located on the internal member 152, set on the switching part 153 There is the card transfer part 1531 for protruding from 153 peripheral surface of switching part, rotates the card transfer part 1531 when the switching part 153 With the gear transfer part 1522a in radial intersection, gear transfer part 1522a gear when by 153 switching of switching part to first angle The residence transfer part Shu Ka 1531 rotates, and is equipped between the switching part 153 and the internal member 152 multiple for the switching part 153 The switching reset spring of position is additionally provided with the second drawstring for rotating with the switching part 153 and realizing drawing on the switching part 153 50, second drawstring 50 is connect with second pulling portion 1454.Second folds control mechanism can be turned by drawstring realization Only perambulator need to can be realized by light switching in the secondary grading unlock for the different distance that dynamic different angle control stretches, operator Automatic step fold so that perambulator be folded in it is convenient and efficient on the basis of it is more smooth, stables, safely.

The folding of armchair structure 1 is described below in the schematic diagram being unfolded under use state in armchair structure 1 as can be seen from Figure 1 Folded process: first sliding second and fold the second feather key 1522 on control mechanism 15, the gear transfer part 1522a on the second feather key 1522 with Sliding to reserve the space rotated for card transfer part 1531, at this time by the up switching first angle a of switching part 153, this programme It is preferred that first angle a is 30 degree~60 degree, then unclamping the second feather key 1522 makes to keep off transfer part 1522a to block card transfer part 1531 It resets, the second drawstring 50 has been pulled first distance at this time, continues switching switching part 153 to second angle b, second angle b is excellent 90 degree~150 degree are selected, the second drawstring 50 has been pulled second distance at this time.When the second drawstring 50 has been pulled first distance, The second rotation top convex body 145 on chair frame folding joint 14 is pulled, and the first rotation of driving top convex body 142 rotates, the first rotation Upper chair frame connector 141 will be stuck in simultaneously originally when top convex body 142 rotates to push up with the first latching tooth 143 on Wheel-chair connector 144 To Wheel-chair connector 144, chair frame connector 141 and Wheel-chair connector 144 is freely rotated folding in realization；It needs to illustrate It is that as shown in figure 12, when the second drawstring 50 has been pulled first distance, the second cant portion 1453 has just turned stroke gap 1454a, therefore when the second drawstring 50 has been pulled second distance, the first rotation top convex body 142 continues to rotate, thus will be originally same When the second latch 146 for being stuck on chair frame connector 141 and lower chair frame connector 147 push up downward chair frame connector 147, realize Folding is freely rotated in upper chair frame connector 141 and lower chair frame connector 147；It needs to illustrate in advance, be opened up in armchair structure 1 Second end 1471bb is Chong Die with the first beginning 1411aa when opening use state, and the pin shaft that will link is stuck to lock preceding chair frame Connector 148, third articulated section 1471 first turns to the second beginning 1471ba and the first beginning when armchair structure 1 folds The state of 1411aa overlapping, second beginning 1471ba drives linkage pin shaft to go to second when continuing to rotate third articulated section 1471 The state of beginning 1471ba and first end 1411ab overlapping, that is, descend chair frame connector 147 and preceding chair frame connector 148 first to roll over It is stacked to overlapping, chair frame connector 148 is Chong Die with the upper folding of chair frame connector 141 together before then descending chair frame connector 147 to drive, To realize upper turning folding between chair frame 11, lower chair frame 12 and preceding chair frame 13.Similarly, expansion armchair structure demander to Operation second folds control mechanism, and the second rotation top second rotation of the guidance of convex body reset spring 200 top convex body 145 inverts, gradually Chair frame 11, lower chair frame 12 and preceding chair frame 13 in expansion, therefore not to repeat here.

It should be noted that locking bindiny mechanism 4 is symmetrical arranged in perambulator two sides, and led to by the first folding control mechanism 5 It crosses and is both symmetrically arranged drawstring while controlling；Chair frame folding joint 14 is symmetrical arranged in perambulator two sides, and is folded and controlled by second Mechanism 15 processed is by being both symmetrically arranged drawstring while controlling；The positive lock structure and the positive lock relief structure It is symmetrical arranged in perambulator two sides, and is driven and moved at the same time by rotating handles；The folding joint 3 that links is also symmetrical in perambulator two sides Setting, therefore do not repeat excessively.In addition, the first drawstring, the second drawstring described in the present embodiment and third drawstring can be Di Ni Ma rope and wirerope, in the present embodiment preferably wirerope.

In conclusion the application is had the advantages that by the improvement in structure

1, occupied space is smaller after linkage folding joint enables perambulator sufficiently to fold and fold, easy to carry and storage, In addition, the structure of linkage is more convenient to use quick；

2, stability of the bindiny mechanism based on triangle is locked, perambulator is stablized in unfolded state, structure letter It is single, and make the unfolded state after perambulator expansion more stable, reliable, safe.

3, body frame structure for automotive reinforcement further can be locked in expansion use state by positive lock structure, so that perambulator Expansion use state it is further stable, it is reliable, safety to ensure children's safety to a greater extent；Positive lock is cooperated to release knot Structure only needs ease rotation rotating handles that can unlock the positive lock structure while unlocking the locking bindiny mechanism, Structure is simple, easy to operate.

4, described first control mechanism is folded by a key control, can be convenient quickly control perambulator and folding and unfolding Switch between state, in addition, must first slide the first feather key before folding baby carrier and rotate rotating handles to unlock locking connection It could start to fold after mechanism, accident can be caused in the case where effective pre- Touch-control error prevention button in this way, substantially increase child The safety that vehicle uses, in another aspect, it is not only more laborsaving by rotating handles rotation unlock, but also in unlock and folding baby carrier After can directly lift handle carry perambulator, it is convenient and efficient.

5, the brake structure structure of override type is simple, only need to light step block, so that it may realize linkage brake, and due to brake Sliding block is with the cooperation for often setting recess and the recess that brakes so that normal danger is more accurate, reliable, stable.

6, chair frame folding joint can more easily realize the folding of perambulator, keep its folding more abundant, save and occupy sky Between, easy to carry and storage, in addition, its linkage that can be realized chair frame, lower chair frame and preceding chair frame folds and linkage expansion, knot Structure is ingenious, so that perambulator is more convenient to use, folds more smooth.

7, second the two of the different distance that control mechanism can realize that rotation different angle control is stretched by drawstring is folded Secondary classification unlock, the automatic step that perambulator need to only can be realized in operator by light switching folds, so that perambulator is folded in More smooth, stable on the basis of convenient and efficient, safety.

It is the one or more embodiments provided in conjunction with particular content as described above, does not assert the specific reality of the application It applies and is only limited to these instructions.It is all approximate with the present processes, structure etc., identical, or under the application concept thereof It makes several technologies to deduce, or replacement all should be considered as the protection scope of the application.

Claims (9)

1. the perambulator of Collapsible seat structure is had, including the armchair structure (1) being connected on body frame structure for automotive (2), the seat Structure (1) includes upper chair frame (11), lower chair frame (12) and preceding chair frame (13), which is characterized in that further includes chair frame folding joint (14) and the armchair structure (1) and body frame structure for automotive (2) and the upper chair frame (11), the lower chair frame (12) can be unlocked step by step Fold control mechanism (15) with the second of the preceding chair frame (13), the upper chair frame (11), the lower chair frame (12) and it is described before Chair frame (13) by the chair frame folding joint (14) be hinged and the armchair structure (1) be unfolded use when will be described on Chair frame (11), the lower chair frame (12) and the preceding chair frame (13) mutual locking positioning, described second folds control mechanism (15) It is connect with the chair frame folding joint (14) to control chair frame folding joint (14) unlock and fold.

2. the perambulator according to claim 1 with Collapsible seat structure, which is characterized in that the chair frame folding joint (14) include:

Upper chair frame connector (141), first for being equipped with the first articulated section (1411) and connecting with the upper chair frame (11) connect Socket part (1412), first articulated section (1411) are equipped with first shaft hole (1411e), are located at first articulated section (1411) End face and convex along the first cant raised (1411b) of the first shaft hole periphery (1411e) setting and along first cant Rise the periphery (1411b) setting the first tooth socket (1411c), on first articulated section (1411) with first tooth socket (1411c) opposite end face is equipped with the second tooth socket (1411d) being arranged along the first shaft hole periphery (1411e)；

First rotation top convex body (142), circumference are equipped with the first cant portion matched with first cant raised (1411b) (1421), the card hole (1422) for transmitting rotary power, first rotation top convex body (142) coaxial arrangement are internally provided with In the installation that is circumferentially staggered, first rotation in first articulated section (1411) and with first cant raised (1411b) First cant portion (1421) described in when turning top convex body (142) rotation climbs along first cant raised (1411b) makes described the One rotation top convex body (142) is ejected toward axial；

First latching tooth (143), inlay card is in first tooth socket (1411c), one end and first rotation top convex body (142) a end face offsets, and first rotation is pushed up pushes the first latching tooth (143) past when convex body (142) are past axially to be ejected It is axially moved and is detached from first tooth socket (1411c)；

Wheel-chair connector (144), the second connection for being equipped with the second articulated section (1441) and being connect with the body frame structure for automotive (2) Portion (1442), second articulated section (1441) are equipped with the third tooth socket (1441a) being circumferentially arranged, the first latching tooth (143) in axial part inlay card in the third tooth socket (1441a), the first latching tooth (143) and the third tooth socket The axial gap for the first latching tooth (143) axial movement, first rotation top convex body are equipped between in (1441a) (142) it is detached from free to rotate between the first tooth socket (1411c) Shi Suoshu armchair structure (1) and body frame structure for automotive (2).

3. the perambulator according to claim 2 with Collapsible seat structure, which is characterized in that the chair frame folding joint (14) further include:

Second rotation top convex body (145) is equipped with rotating base (1451), along the axially extended card of the rotating base (1451) Axis (1452) and edge are in the second cant portion (1453) that the rotating base (1451) is circumferentially arranged, second cant portion (1453) the second pulling portion (1454) are equipped with, the axis (1452) is axially extending along the rotating base (1451) and passes through The first shaft hole (1411e) puts in the card hole (1422) so that second rotation top convex body (145) drives when rotating First rotation top convex body (142) rotation；

Second latch (146) is equipped with rotation chamber (1461), and the rotation chamber (1461) is in bottom circumferentially arranged with the second cant Raised (1461a), second latch (146) are inlaid in second tooth socket (1411d), second latch (146) and The axial gap for second latch (146) axial movement, the rotation base are equipped between in second tooth socket (1411d) Portion (1451) is coaxially inlaid in the rotation chamber (1461) and second cant portion (1453) and second cant are raised (1461a) has edge between the installation that is circumferentially staggered, second cant portion (1453) and second cant raised (1461a) The stroke gap (1454a) of second cant portion (1453) rotation direction, second rotation top convex body (145) rotate when institute Stating the second cant portion (1453) and first turning over the stroke gap (1454a) and climb again along second cant raised (1461a) makes Second latch (146) is detached from second tooth socket (1411d) toward axial movement, second rotation top convex body (145) It is equipped with the second rotation between second latch (146) and pushes up convex body reset spring (200)；

Lower chair frame connector (147), is equipped with third articulated section (1471) and the third connecting with the lower chair frame (12) connects Socket part (1472), the third articulated section (1471) are equipped with the 4th tooth socket (1471a) being circumferentially arranged, second latch (146) in axial part inlay card in the 4th tooth socket (1471a)；

Preceding chair frame connector (148), the 4th connection for being equipped with the 4th articulated section (1481) and being connect with the preceding chair frame (13) Portion (1482), the 4th articulated section (1481) are hinged with the third articulated section (1471), and second latch (146) is past It is axially moved the upper chair frame (11), the lower chair frame (12) and the preceding chair frame when being detached from the second tooth socket (1411d) (13) it can be freely rotated around its common hinged place.

4. the perambulator according to claim 3 with Collapsible seat structure, which is characterized in that the first latching tooth (143) it is equipped between second articulated section (1441) for pushing up the first latching tooth (143) toward first tooth socket The third compressed spring of (1411c).

5. the perambulator according to claim 3 with Collapsible seat structure, which is characterized in that second latch (146) it is equipped between the third articulated section (1471) for pushing up second latch (146) to second tooth socket 4th compressed spring of (1411d).

6. the perambulator according to claim 3 with Collapsible seat structure, which is characterized in that first articulated section (1411) it is equipped with the center of circle and first articulated section (1411) the first circular hole (1411a) that hingedly center is overlapped, described the One circular hole (1411a) is equipped with the first beginning (1411aa) and first end (1411ab), the third articulated section (1471) It is equipped with the second circular hole (1471b) that the center of circle is overlapped with the hinged center of the third articulated section (1471), second circular arc Hole (1471b) is equipped with the second beginning (1471ba) and second end (1471bb), and in the armchair structure (1), expansion uses shape The second end (1471bb) is Chong Die with the first beginning (1411aa) when state, inclined in the 4th articulated section (1481) one Center portion position is equipped with linkage portion (1481a), is fixed on the linkage portion (1481a) through first circular hole (1411a) With the linkage pin shaft of the second circular hole (1471b), the third articulated section (1471) is first rotated when the armchair structure (1) folds The state being overlapped to second beginning (1471ba) and first beginning (1411aa), continues to rotate the third articulated section (1471) the second beginning Shi Suoshu (1471ba) drives the linkage pin shaft to go to second beginning (1471ba) and described the The state of one end (1411ab) overlapping, to realize that upper chair frame (11), lower chair frame (12) and preceding chair frame (13) turn folding.

7. the perambulator according to claim 3 with Collapsible seat structure, which is characterized in that described second folds control Mechanism (15) includes:

Package assembly (151) is fixed on the upper chair frame (11)；

Internal member (152) is set in the package assembly (151), the internal member (152) be equipped with sliding slot (1521) and The second feather key (1522) slided in the sliding slot (1521), second feather key (1522) are equipped with second feather key (1522) the gear transfer part (1522a) of glide direction movement, is equipped between second feather key (1522) and the internal member (152) The gear resetted for gear transfer part (1522a) turns reset spring；

Switching part (153), hinge are located on the internal member (152), and the switching part (153) is equipped with and protrudes from the switching The card transfer part (1531) of part (153) peripheral surface rotates the card transfer part (1531) and the gear when switching part (153) and turns Portion (1522a) is in radial intersection, and the gear transfer part (1522a) blocks institute when by switching part (153) switching to first angle State card transfer part (1531) rotation.

8. the perambulator according to claim 7 with Collapsible seat structure, which is characterized in that the switching part (153) The switching reset spring resetted for the switching part (153) is equipped between the internal member (152).

9. the perambulator according to claim 7 with Collapsible seat structure, which is characterized in that the switching part (153) On be additionally provided with the second drawstring (50) for rotating with the switching part (153) and realizing drawing, second drawstring (50) and described the Two pulling portion (1454) connection.