CN207697791U - Children trolley - Google Patents

Abstract

The utility model discloses a kind of children trolleys,Its stroller frame includes push-rod frame,Fore-stock and after-poppet,The bottom of fore-stock is equipped with front component,The bottom of after-poppet is equipped with wheel assembly,The upper end of fore-stock,It is pivotally connected together each other by cradle head between the upper end of after-poppet and the lower end of push-rod frame,When stroller frame is in unfolded state,Push-rod frame has the reverse operation position that the positive operating position that updip extends from front to back extends with updip from back to front in its rotational travel,When the stroller frame is in folded state,There is the stroller frame stroller frame to collapse the reverse folded position of forward folded position and push-rod frame gathering on front side of the fore-stock on rear side of the after-poppet,No matter push-rod frame is in positive operating position or reverse operation position in this way,Can push-rod frame be overturn and be carried out the folding of stroller frame towards side where user,Facilitate the operation of user.

Description

stroller

technical field

The utility model relates to a stroller for children.

Background technique

In the prior art, in order to meet the different needs of the operator for forward pushing and reverse pushing, the push rod of the stroller is usually configured as a reversible structure. However, for reversing carts, during folding operation, it is often necessary to turn over the push rod frame to the rear side of the rear bracket for folding, or it can only be turned over to the front side of the front bracket for folding. Whether the rod frame is pushed forward or reversely, when the cart frame is folded, it is necessary to turn the cart frame in a specific direction to achieve folding, which often requires the user to fold the cart frame. It also needs to be converted to the other side of the trolley for operation, which causes inconvenience in use. In addition, in the prior art, the push rod often needs to be locked with other rods on the cart frame to determine the position after the shift after the shift, which not only causes the overall structure of the cart frame to be unsuccinct, but also makes After the reversing operation, the operator needs to manually lock the push rod frame, which causes inconvenience in operation.

Contents of the invention

The purpose of the utility model is to provide a baby stroller with simple structure and convenient operation.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a children's stroller, including a stroller frame with an unfolded state and a folded state, the cart frame includes a push rod frame, a front bracket and a rear bracket, The bottom of the front bracket is provided with a front wheel assembly, the bottom of the rear bracket is provided with a rear wheel assembly, and the upper end of the front bracket, the upper end of the rear bracket and the lower end of the push rod frame are rotated The joints are rotatably connected to each other. When the trolley frame is in the unfolded state, the push rod frame has a positive working position extending from front to rear and an upward tilt from rear to front on its rotation stroke. Extended reverse working position, when the cart frame is in the folded state, the cart frame has a forward folded position where the cart frame is folded on the rear side of the rear bracket and the push rod The shelf is stowed in the reverse folded position on the front side of the front frame.

Preferably, a push rod limiting assembly is provided in the rotary joint, and the push rod limiting assembly includes a reversing limiting member arranged on the push rod frame and rotating with it, Or the drive slider on the rear bracket and capable of cooperating with the reversing limiter, the drive slider has a first limit position and a second limit position on its sliding path, when the push When the rod frame is between the forward working position and the reverse working position, the reversing limiter cooperates with the driving slider and drives the driving slider when the push rod frame rotates sliding; when the push rod frame is in the forward working position, the drive slider is in the first limit position; when the push rod frame is in the reverse working position, the drive slider The block is in the second limit position, when the push rod frame is turned and folded from the forward working position to the rear side of the rear support, and the push rod frame is moved from the reverse working position to the When the front side of the front bracket is rotated and folded, the reversing limiter is disengaged from the driving slider.

Preferably, the lower end of the push rod frame and the upper end of the rear bracket are rotatably connected around a first rotation centerline, and the upper end of the rear bracket and the upper end of the front bracket rotate around a first rotation center line. The two rotation centerlines are rotatably connected, the first rotation centerline and the second rotation centerline extend parallel to each other or co-linearly, and the rotation joint is provided with a mechanism for locking the push rod frame and the rear bracket The first lock structure, the second lock structure for locking the front bracket and the rear bracket, when the push rod frame rotates between the forward working position and the reverse working position, the The first lock structure is unlocked and the second lock structure remains locked; when the push rod frame is rotated from the forward working position to the rear bracket, and the push rod frame is rotated from the reverse working position When rotating toward the front bracket, the push rod frame drives the second lock structure to unlock.

Further, the rotating joint is also provided with a limit unlocking structure for driving the reversing limiter to disengage from the driving slider. When the cart frame is converted from the unfolded state to the folded state, the The disengagement between the reversing limiter and the driving slider is prior to the unlocking of the second lock structure.

Furthermore, the rotating joint is provided with an unlocking member for unlocking the first lock structure, and the position-limiting unlocking structure is arranged between the unlocking member and the reversing limiting member, and is located between the When the unlocking member moves, the reversing limiting member is driven to break away from the driving slider.

Furthermore, the reversing limiting member is slidably provided on the push rod frame in a direction parallel to the first rotation centerline, and the reversing limiting member faces the end of the driving slider. A limit projection is provided on the drive slider, and a guide chute is provided on the drive slider for slidingly inserting the limit projection, and the limit projection can be fitly inserted into the guide chute and can Slide along the guide chute.

As a specific implementation, the unlocking member includes an unlocking slider slidably arranged on the push rod frame, the sliding direction of the unlocking slider is perpendicular to the first rotation center line, and the unlocking slider A driving slope is provided on the block, and a matching slope is provided on the reversing limiter. When the unlocking slider moves along its sliding direction to make the first lock structure continue to slide after unlocking, the driving slope and the first lock structure continue to slide. The matching inclined surface cooperates and drives the reversing limiting member to move away from the driving slider.

Preferably, the front wheel assembly includes a front wheel joint arranged on the front bracket and connected to the front steering shaft in rotation, a front wheel orientation assembly is arranged between the front bracket and the front wheel joint, and the rear wheel assembly It includes a rear wheel joint that is rotatably connected with the rear bracket around the rear steering shaft, and a rear wheel orientation assembly is arranged between the rear bracket and the rear wheel joint, and the front wheel orientation assembly and the rear wheel orientation assembly respectively have adjustable The directional unlocked state of free steering and the directional locked state of steering lock, when the cart frame is in the folded state, the front bracket and the rear bracket are close to each other, and the rear wheel directional assembly and the front wheel directional assembly are both in the directional locked state.

Preferably, the front wheel assembly includes a front wheel joint arranged on the front bracket and connected to the front steering shaft in rotation, a front wheel orientation assembly is arranged between the front bracket and the front wheel joint, and the rear wheel assembly It includes a rear wheel joint that is rotatably connected with the rear bracket around the rear steering shaft, and a rear wheel orientation assembly is arranged between the rear bracket and the rear wheel joint, and the front wheel orientation assembly and the rear wheel orientation assembly respectively have adjustable The directional unlock state of free steering and the directional lock state of steering lock,

When the push rod frame is in the forward working position, the driving slider cooperates with the rear wheel orientation assembly to make it in an orientation-locked state, and the front wheel orientation assembly is disengaged from the driving slider Cooperate to be in the directional unlocked state; when the push rod frame is in the reverse working position, the drive slider cooperates with the front wheel directional assembly to make it in the directional locked state, and the rear wheel directional assembly Disengaged from the drive slider to be in a directional unlocked state.

Further, when the trolley frame is in the unfolded state and the push rod frame is located between the forward working position and the reverse working position, the front wheel orientation assembly and the rear wheel orientation assembly are respectively connected to the The driving sliders are disengaged and respectively in the directional unlocked state.

Further, the front wheel orientation assembly includes a front orientation member which is arranged at the bottom of the front support so as to move toward or away from the front wheel joint, and is used to provide a tendency for the front orientation member to move toward the front wheel joint. The front directional elastic piece, the front slider arranged on the front bracket to move up and down along the length extension direction of the front bracket, the front locking elastic piece for providing the upward movement tendency of the front slider, and the front locking elastic piece connected to the front bracket The front connecting piece between the front directional piece and the front slider, the front wheel joint is provided with a front directional slot for the front directional piece to fitly inserted into;

The rear wheel orientation assembly includes a rear orientation member which is arranged at the bottom of the rear support so as to move toward or away from the rear wheel joint, and a rear orientation elastic for providing a tendency for the rear orientation member to move toward the rear wheel joint. Parts, a rear slider arranged on the rear bracket to move up and down along the length extension direction of the rear bracket, a rear locking elastic member for providing the upward movement tendency of the rear slider, and a rear locking elastic member connected to the rear orientation The rear connecting piece between the piece and the rear slider, and the rear wheel joint is provided with a rear orientation slot for the insertion of the rear orientation piece.

Further, when the push rod frame is in the forward working position, the driving slider abuts against the rear slider to make it go down, and the rear orientation member is fitly inserted in the rear In the orientation slot so that the rear wheel orientation assembly is in an orientation-locked state, the drive slider is separated from the front slider; when the push rod frame is in the reverse working position, the drive slider abut against the front slider to make it go down, the front directional piece is matedly inserted in the front directional slot so that the front wheel directional assembly is in a directional locked state, the drive slider and the After the above, the slider is separated from each other.

Further, the upper end of the front bracket is provided with a front protrusion, and the upper end of the rear bracket is provided with a rear protrusion. When the cart frame is in a folded state, the front bracket and the rear bracket are mutually Close together, the front convex part is pressed against the rear slider, and the rear convex part is pressed against the front slider, so that the rear wheel orientation assembly and the front wheel orientation assembly are in an orientation-locked state respectively.

Preferably, the stroller further includes a foldable seat frame, the seat frame is mounted on the frame of the stroller through a seat bracket, when the stroller is in the forward folding position and the reverse When in the folded position, the seat frame is all gathered at the front side of the front bracket.

Due to the application of the above-mentioned technical solution, the utility model has the following advantages compared with the prior art:

1. The children's stroller of the present utility model has a simple structure, and the reversing operation of the push rod frame is convenient and simple;

2. Regardless of whether the push rod frame is in the forward working position or the reverse working position, the push rod frame can be turned over towards the user's side to fold the cart frame, which is convenient for the user's operation;

3. The push rod frame can also automatically realize the conversion of the directional locking and directional unlocking states of the front wheel assembly and the rear wheel assembly during the reversing operation;

4. During reversing operation, when the push rod frame is rotated to a position between the forward working position and the reverse working position, both the front wheel assembly and the rear wheel assembly are in a universal state, which allows the user to Standing on the spot to rotate the cart frame as a whole, without going to the other side to realize the reversing operation, which is more convenient for the user's daily reversing operation;

5. The front bracket, rear bracket and push rod frame of the folded cart frame are closely folded together, and can be folded together with the seat and pocket frame, and the folded cart frame can also rely on the front frame in the directional lock state. The wheel assembly and the rear wheel assembly stand independently on the ground. They are small in size and easy to carry and store. The appearance is more beautiful. At the same time, the push rod reversing operation and folding operation are very simple, which brings great convenience to users.

Description of drawings

Accompanying drawing 1 is the three-dimensional view of the children's stroller of the present utility model in the forward unfolded state;

Accompanying drawing 2 is the side view of accompanying drawing 1;

Accompanying drawing 3 is the side view of the children's stroller of the present utility model in the second forward unfolded state;

Accompanying drawing 4 is the side view of the children's stroller of the present utility model in the forward unfolded state three times;

Accompanying drawing 5 is the side view of the reverse unfolded state of the children's stroller of the present utility model;

Accompanying drawing 6 is the side view of the children's stroller of the present utility model under the reverse unfolded state;

Accompanying drawing 7 is the side view of the children's stroller of the present utility model in reverse unfolded state three times;

Accompanying drawing 8 is the three-dimensional view of the children's stroller reversing process of the present utility model;

Accompanying drawing 9 is the side view of accompanying drawing 8;

Accompanying drawing 10 is the side view of the half-folded state when the children's stroller of the present invention is forward folded;

Accompanying drawing 11 is the side view of the folded state when the children's stroller of the present invention is folded forward;

Accompanying drawing 12 is the side view of half-folded state 1 when the children's stroller of the present utility model is reversely folded;

Accompanying drawing 13 is the side view of half-folded state 2 when the children's stroller of the present utility model is reversely folded;

Accompanying drawing 14 is the side view of the folding state when the children's stroller of the present utility model is reversely folded;

Accompanying drawing 15 is the three-dimensional view of the folded state when the children's stroller of the present invention is reversely folded;

Accompanying drawing 16 is the rear view of the folded state when the children's stroller of the present utility model is reversely folded;

Accompanying drawing 17 is along the M-M in the accompanying drawing 16 The cross-sectional structure schematic diagram;

Accompanying drawing 18 is the structural exploded schematic view 1 of the rotating joint adopted on the children's stroller of the present invention;

Accompanying drawing 19 is the structural exploded schematic diagram II of the rotating joint of accompanying drawing 18;

Accompanying drawing 20 is the perspective view of unlocking slider in the rotary joint of accompanying drawing 18;

Accompanying drawing 21 is the perspective view 1 of the first unlocking driving part in the rotary joint of drawing 18;

Accompanying drawing 22 is the second perspective view of the first unlocking driver in the rotary joint of the accompanying drawing 18;

Accompanying drawing 23 is a schematic diagram of the mating of the base part, the unlocking slider and the reversing limiter in the rotary joint of the accompanying drawing 18;

Accompanying drawing 24 is the partial sectional schematic diagram of the stroller frame of the children's stroller of the present utility model;

Accompanying drawing 25 is the enlarged schematic diagram of P part in accompanying drawing 24;

Accompanying drawing 26 is the side view of the rotating joint when the cart frame is forwardly opened;

Accompanying drawing 27 is a schematic diagram of the enlarged structure along the A-A direction in the accompanying drawing 26;

Accompanying drawing 28 is the cross-sectional enlarged schematic diagram of accompanying drawing 26;

Accompanying drawing 29 is a schematic diagram of the mating relationship between the driving slider, the front slider and the rear slider in the accompanying drawing 28;

Accompanying drawing 30 is the side view of the rotating joint when the cart frame is in the reversing intermediate position;

Accompanying drawing 31 is along the B-B in accompanying drawing 30 The sectional structure schematic diagram;

Accompanying drawing 32 is the transverse sectional schematic diagram of accompanying drawing 30;

Accompanying drawing 33 is the side view of the rotating joint when the cart frame is reversely opened;

Accompanying drawing 34 is along the C-C in accompanying drawing 33 The sectional structure schematic diagram;

Accompanying drawing 35 is along the D-D in accompanying drawing 34 The sectional structure schematic diagram;

Accompanying drawing 36 is along the E-E in accompanying drawing 34 The sectional structure schematic diagram;

Accompanying drawing 37 is the side view of the rotating joint when the cart frame is in the forward folded position;

Accompanying drawing 38 is the enlarged schematic view of the cross-sectional structure along the F-F direction of accompanying drawing 37;

Accompanying drawing 39 is the cross-section schematic diagram of accompanying drawing 37;

Accompanying drawing 40 is the side view of the rotating joint when the stroller frame is in the reverse folded position;

Accompanying drawing 41 is the transverse sectional schematic diagram of accompanying drawing 40;

Among them: 100, cart frame; 10, rear bracket (first rod); 101, first connecting part; 101a, rear convex part; 10a, second lock groove; 10b, third lock groove; 10c, perforation;

20, front bracket (second rod); 201, second connecting part; 201a, front convex part; 20a, fourth lock groove; 202, base frame;

30, push rod frame (base rod); 301, base part; 30a, first lock groove;

40. Front wheel assembly; 401. Front slider; 402. Front locking elastic member; 403. Front connector;

50. Rear wheel assembly; 501. Rear slider; 502. Rear locking elastic member; 503. Rear connector; 504. Rear steering shaft; 505. Rear wheel joint; 506. Rear orientation piece (rear orientation pin); 507. rear directional elastic;

200. Revolving joint; 300. Seat frame; 3001. First surrounding pole; 3002. Second surrounding pole; 3003. Handrail rod; 3004. Connecting frame; 400. Seat rotating joint;

123, rotating shaft; 1, the first locking chainring; 1a, the first locking tooth; 1b, perforation;

2. The first lock elastic part; 3. The first unlocking drive part; 31. The sliding fitting part; 32. The guiding slope; 33. The second unlocking slope;

4. The second locking tooth plate; 41. The second locking tooth; 5. The second locking elastic member;

6. The second unlocking driver; 61. The unlocking protrusion;

7. Driving slider; 71. Guide chute; 72. Driving end; 73. Limit pin groove;

8. Reversing limit piece; 81. Limiting bump; 82. Cooperating slope;

9. The unlocking slide block; 91. The first unlocking slope; 92. The limit chute; 93. The driving slope.

Detailed ways

The technical solution of the present utility model will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

Referring to the children's stroller shown in FIGS. 1 to 16, it includes a stroller frame 100 in an unfolded state and a folded state and a foldable seat frame 300. The stroller frame 100 includes a push rod frame 30 and a front bracket 20. And rear support 10, the bottom of front support 20 is provided with front wheel assembly 40, the bottom of rear support 10 is provided with rear wheel assembly 50, on each side of cart frame 100 left and right sides, the upper end of front support 20, The upper end of the rear bracket 10 and the lower end of the push rod frame 30 are rotatably connected to each other through a rotating joint 200 .

When the trolley frame 100 is in the unfolded state, the push rod frame 30 has a forward working position extending gradually upward from front to rear on its rotation stroke, as shown in FIGS. 1 to 4 , and a forward working position extending from rear to front Reverse working position, as shown in Figure 5 to Figure 7.

When the stroller frame 100 is in the folded state, it has a forward folding position where the push rod frame 30 is folded on the rear side of the rear bracket 10, as shown in FIGS. Reverse folded position, as shown in Figures 12 to 16.

The seat frame 300 is installed on the stroller frame 100 through the seat bracket, and is gathered at the front side of the front bracket 20 when it is folded, as shown in FIGS. 10 to 16 . The seat frame 300 has a surrounding frame including at least a first surrounding bar 3001 and a second surrounding bar 3002 which are rotatably connected, where the surrounding frame also includes a handrail bar 3003 . The seat bracket includes a base frame 202 and a connecting frame 3004 that can be assembled and disassembled. Detachable mating; the upper end of the connecting frame 3004, one end of the first surrounding bar 3001, one end of the second surrounding bar 3002 and one end of the handrail bar 3003 are connected together in rotation through the seat pocket rotating joint 400 so as to be able to Relative rotation to open and close.

The seat rotation joint 400 is provided with a seat locking structure for locking the surrounding frame relative to the connecting frame 3004 in multiple working positions. When the seat frame 300 is in the unfolded state, the first surrounding rod 3001 and the second The surrounding bar 3002 and the handrail bar 3003 can rotate relative to the connecting frame 3004 when they are relatively locked, so that the seat frame 300 has multiple adjustable working positions when it is installed on the cart frame 100, as shown in Figure 2 to The sitting posture state, the half-lying state and the fully lying state shown in Fig. 7 are to meet the adjustment needs of different sitting postures of children. The adjustment of the working state of the seat pocket frame 300 is independent of the adjustment of the forward and reverse working positions of the push rod frame 30 on the cart frame 100 .

1 to 16, two groups of front wheel assemblies 40 and two groups of rear wheel assemblies 50 are universal wheel assemblies, wherein, as shown in FIG. 504 is rotatably connected to the rear wheel joint 505, and a rear wheel orientation assembly is provided between the rear bracket 10 and the rear wheel joint 505. The rear wheel orientation assembly has a freely steerable orientation unlocked state and a steering locked orientation lock state.

In this embodiment, as shown in FIG. 17 , the rear wheel orientation assembly includes a rear orientation member 506 disposed at the bottom of the rear bracket 10 that can move toward or away from the rear wheel joint 505, and is used to provide the rear orientation member 506 to move toward the rear wheel. The rear directional elastic member 507 of the movement tendency of the joint 505 is provided with a rear directional groove for the rear directional member 506 to be matedly inserted on the rear wheel joint 505 . Here, the rear orientation member 506 adopts a positioning pin, and the rear orientation elastic member 507 adopts a spring. Referring to Fig. 32, the rear wheel orientation assembly also includes a rear slider 501 arranged on the rear bracket 10 to move up and down along the length extension direction of the rear bracket 10, and a rear locking elastic member for providing the upward movement trend of the rear slider 501 502, and the rear connector 503 connected between the rear orientation member 506 and the rear slider 501. Here, the rear connector 503 is a traction cable, and the rear locking elastic member 502 is also a spring, and the elasticity of the rear locking elastic member 502 The force is greater than the elastic force of the rear directional elastic member 507 .

In this way, when there is no external force, the rear slider 501 has a tendency to go up along the rear bracket 10 under the action of the rear locking elastic member 502, and the rear orientation member 506 is pulled through the rear connecting member 503, so that the rear orientation member 506 is disengaged. The rear orientation slot, so that the rear wheel orientation assembly is in the orientation unlocked state, and the rear wheel assembly 50 can turn freely; and when an external force acts on the rear slider 501 to move downward along the rear bracket 10, the rear connecting piece 503 releases the pair After the pulling of the rear directional member 506, the rear directional member 506 is inserted downwardly under the action of the elastic force of the rear directional elastic member 507 into the rear directional groove, so that the rear wheel directional assembly turns into a directional locked state, and the rear wheel Assembly 50 is non-steerable and can only rotate forward in a single direction.

Similarly, not shown in the figure, the front wheel assembly 40 includes a front wheel joint that is rotatably connected with the front support 20 around the front steering shaft, and a front wheel orientation assembly is provided between the front support 20 and the front wheel joint, and the front wheel orientation assembly also has The orientation unlocked state of free steering and the orientation locked state of steering lock. The front wheel directional assembly includes a front directional element that can be moved towards or away from the front wheel joint and is arranged on the bottom of the front bracket 20, and a front directional elastic member that is used to provide the front directional component towards the movement tendency of the front wheel joint. Front orientation slot for mating insertion of the front orientation. Here, what the front directional member adopts is also a positioning pin, and what the front directional elastic member adopts is a spring. Referring to Figures 28, 32, and 36, the front wheel orientation assembly also includes a front slider 401 that is arranged on the front bracket 20 to move up and down along the length extension direction of the front bracket 20, and is used to provide the upward movement trend of the front slider 401. The front locking elastic part 402, and the front connecting part 403 connected between the front orienting part and the front slider 401, here, the front connecting part 403 is also a traction cable, and the front locking elastic part 402 is also a spring, and the front locking elastic The elastic force of the piece 502 is greater than that of the front directional elastic piece. Also similarly, when no external force acts on the front slider 401, the front wheel orientation assembly is in the orientation unlocked state; when an external force presses the front slider 401 downward, the front wheel orientation assembly turns into an orientation lock state.

As shown in the accompanying drawings, the lower end of the push rod frame 30 and the upper end of the rear bracket 10 are rotatably connected around the first center line of rotation, and the upper end of the rear bracket 10 and the upper end of the front bracket 20 rotate around The second rotation centerline is rotationally connected, and the above-mentioned first rotation centerline and the second rotation centerline extend parallel to each other or collinearly. In this embodiment, the above-mentioned first rotation center line and the second rotation center line are colinear extensions, that is, the lower end of the push rod frame 30, the upper end of the rear bracket 10 and the upper end of the front bracket 20 rotate around the same The centerlines are rotatably connected to each other, and the three are rotatably connected through a rotary joint 200 .

The specific structure of the rotary joint 200 adopted in the utility model and its working principle in the conversion process of the different working states of the cart frame 100 are described in detail below:

The rotary joint 200 is used for the rotary connection of three support rods including a base rod with a base part, a first rod with a first connection part, and a second rod with a second connection part. In this embodiment, see FIG. 18 to FIG. 41 , the base rod is correspondingly the push rod frame 30 , the first rod is the rear bracket 10 , and the second rod is the front bracket 20 . Correspondingly, the lower end of the push rod frame 30 is the base portion 301, the upper end of the rear bracket 10 is the first connecting portion 101, the upper end of the front bracket 20 is the second connecting portion 201, the above-mentioned base portion 301, the first connecting portion The first connecting part 101 and the second connecting part 201 are rotatably connected by the rotating shaft 123 , and they are connected together to rotate around the axis of the rotating shaft 123 .

The rotary joint 200 is provided with a push rod limit assembly, as shown in Fig. 18 and Fig. A driving slider 7 on the connecting portion 101 and capable of cooperating with the reversing limiting member 8, the driving slider 7 has a first limiting position and a second limiting position on its sliding path. When the cart frame 100 is unfolded, when the push rod frame 30 is between the forward working position and the reverse working position, the reversing limiter 8 cooperates with the driving slider 7, and when the push rod frame 30 rotates When the reversing limiter 8 drives the drive slider 7 to slide between the first limit position and the second limit position; when the push rod frame 30 is in the forward working position, the drive slider 7 is in the first limit position , as shown in Figure 28; when the push rod frame 30 is in the reverse working position, the drive slider 7 is in the second limit position, as shown in Figure 32. This can effectively limit the rotation angle of the push rod frame 30 when reversing, so as to prevent it from being offside and ensure the comfort when the cart is pushed forward and reverse.

Referring to Figures 18, 19 and 29, the drive slider 7 is provided with two limit pin slots 73, and the two limit pin slots 73 are respectively provided with limit pins (not shown in the figure), the first connecting part 101 is also provided with two pin grooves corresponding to the first limit position and the second limit position. When the driving slider 7 slides on the first connecting part 101, it drives the limit pin to slide together. When the limit pin moves in a single direction When it falls into the pin groove on the first connecting portion 101 , the driving slider 7 is correspondingly limited in the corresponding position, so as to realize the limit when the push rod frame 30 changes direction.

The conversion of the drive slider 7 between the first limit position and the second limit position also realizes the automatic switching between the directional locking and directional unlocking states of the front wheel assembly 40 and the rear wheel assembly 50 . Specifically, the two ends of the driving slider 7 are two driving ends 72 respectively matched with the front slider 401 and the rear slider 501, and the driving slider 7 slides between the first limit position and the second limit position , the two driving ends 72 of the driving slider 7 can be matched with the rear slider 501 in the rear bracket 10 or the front slider 401 in the front bracket 20 respectively, thereby applying the rear slider 501 or the front slider 401 to under the force.

Here, referring to Figures 1 to 4, and Figures 26, 28, and 29, when the push rod frame 30 is in the forward working position, one of the driving ends 72 on the driving slider 7 abuts against the rear slider 501 And make it descend, so that the rear orientation member 506 is matedly inserted in the rear orientation groove and the rear wheel orientation assembly is in the orientation locking state, and now the other driving end 72 on the drive slider 7 is disengaged from the front slider 401, The front wheel directional assembly is in the directional unlock state, that is, when the push rod frame 30 is in the forward working position, the front wheel assembly 40 can turn freely, and the rear wheel assembly 50 is directional locked and cannot turn.

On the contrary, referring to Fig. 5, 6, 7 and Fig. 33, 36, when the push rod holder 30 was in the reverse working position, the above-mentioned other driving end 72 of the driving slider 7 abutted against the front slider 401 and Make it go down, so that the front orienting member is fitly inserted in the front orienting groove and make the front wheel orienting assembly be in the orientation locking state, this moment drive slide block 7 is disengaged from the rear slide block 501, so that the rear wheel orienting assembly is in the orientation unlocking state, that is, when the push rod frame 30 is in the reverse working position, the rear wheel assembly 50 can turn freely, and the front wheel assembly 40 is directional locked and cannot turn.

When the push rod frame 30 is in the middle position between the forward working position and the reverse working position, as shown in Figs. between the positions, and the drive slider 7 is separated from the front slider 401 and the rear slider 501 respectively, so that the front wheel orientation assembly and the rear wheel orientation assembly are respectively in the orientation unlocked state, and accordingly the front wheel assembly 40 and the rear wheel assembly 50 All are in the state of free steering. In this way, when performing reversing operation, when the push rod frame 30 is rotated to an intermediate position between the forward working position and the reverse working position, the front wheel assembly 40 and the rear wheel assembly 50 are in a universal state, and the user can stand The stroller frame 100 is rotated as a whole on the spot without going to the other side to realize the reversing operation, which is more convenient for the user's daily reversing operation.

The rotary joint 200 is provided with a locking mechanism for locking the base part 301, the first connecting part 101 and the second connecting part 201 with each other. The first lock structure and the second lock structure for locking the first connecting part 101 and the second connecting part 201 mutually. When the push rod frame 30 rotates between the forward working position and the reverse working position, the first lock structure is unlocked and the second lock structure remains locked, that is, the push bar frame 100 is kept in a state of unfolding and stable loading for pushing. The reversing operation of the rod frame 30; and when the push rod frame 30 was rotated by the forward working position to the rear support 10, and when the push rod frame 30 was rotated by the reverse working position to the forward support 10, the push rod frame 30 drove the second The lock structure is unlocked, so as to realize forward folding and reverse folding of the stroller frame 100 .

The swivel joint 200 is also provided with a limit unlocking structure for driving the reversing limiter 8 to disengage from the drive slider 7. When the cart frame 100 is converted from the unfolded state to the folded state, that is, the push rod frame 30 is turned from the positive position to the folded state. When the rear side of the rear bracket 10 is rotated and folded toward the working position, and when the push rod frame 30 is rotated and folded from the reverse working position to the front side of the forward bracket 20, the above-mentioned limit unlocking structure drives the reversing limit member 8 and the drive The disengagement between the sliders 7, and the disengagement between the reversing limiter 8 and the driving slider 7 is prior to the unlocking of the second lock structure.

Specifically, referring to FIG. 18, FIG. 19, as shown in FIG. 26 to FIG. A locking chainring 1, a first locking elastic member 2 for providing the elastic force required for the sliding tendency of the first locking chainring 1 towards the base part 301, the outer circumference of the first locking chainring 1 has a plurality of first The lock tooth 1a, the base part 301 is provided with a plurality of first lock grooves 30a matching with the above-mentioned plurality of first lock teeth 1a, and the first connecting part 101 is provided with a plurality of first lock teeth 1a. A plurality of second lock grooves 10a, when the first lock structure is locked, a plurality of first lock teeth 1a cooperate with a plurality of first lock grooves 30a and second lock grooves 10a at the same time, that is, two of the plurality of first lock teeth 1a The ends are fitly embedded in a plurality of first lock grooves 30a and second lock grooves 10a, so that the push rod frame 30 is locked relative to the rear bracket 10; and when the first lock structure is unlocked, the plurality of first lock teeth 1a and The plurality of first lock slots 30a are disengaged, and at this time, the push rod frame 30 can rotate around the rotating shaft 123 relative to the rear bracket 10 .

The second lock structure includes a second locking toothed plate 4 slidably arranged between the first connecting portion 101 and the second connecting portion 201 along the extension direction of the axis line of the rotating shaft 123, for providing the second locking toothed plate 4 toward the first A connecting part 101 is provided with a second lock elastic member 5 with the required elastic force for the sliding tendency. There are a plurality of second locking teeth 41 on the outer peripheral portion of the second locking toothed disc 4. The first connecting part 101 is provided with a plurality of second locking teeth 41 A plurality of third lock slots 10b matched with the second lock teeth 41, and a plurality of fourth lock slots 20a matched with the second lock teeth 41 are provided on the second connecting portion 201. When the second lock structure is locked, the first Two lock teeth 41 are matched with multiple third lock grooves 10b and fourth lock grooves 20a at the same time, so that the front bracket 20 and the rear bracket 10 are relatively locked; when the second lock structure is unlocked, multiple second lock teeth 41 It is disengaged from the plurality of third lock slots 10b, so that the front bracket 20 and the rear bracket 10 can rotate relative to each other.

Referring to Fig. 18 and Fig. 19, the rotary joint 200 is provided with a first unlocking driver 3 and a second unlocking driver 6, the first unlocking driver 3 slides along the axis of the rotating shaft 123 and can revolve around the axis of the rotating shaft 123 The center line is rotatably arranged on the base part 301 , and the first locking toothed disc 1 abuts against the first unlocking driving member 3 . The swivel joint 200 is also provided with an unlocking slider 9 for driving the first unlocking driver 3 to slide. The unlocking slider 9 is slidably arranged on the base portion 301, and the sliding direction of the unlocking slider 9 is perpendicular to the axis of the rotating shaft 123. As shown in Figures 18, 19, 20, and 23, the unlocking slider 9 is provided with a first unlocking slope 91, and the first unlocking driver 3 is provided with a second unlocking slope matching the first unlocking slope 91. 33. When the unlocking slider 9 moves, the first unlocking slope 91 cooperates with the second unlocking slope 33 to drive the first unlocking driver 3 to slide along the axis of the rotating shaft 123, thereby driving the first locking chainring 1 to overcome the first lock. The elastic force of the elastic member 2 moves away from the base part 301 to realize the unlocking of the first lock structure.

The second unlocking drive member 6 is provided on the first connecting portion 101 so as to slide along the axis line of the rotating shaft 123 and can rotate around the axis line of the rotating shaft 123 , and the second locking toothed plate 4 abuts against the second unlocking drive member 6 At least one unlocking protrusion 61 is provided on the second unlocking driving member 6 , here, two unlocking protrusions 61 are arranged at intervals of 180°. As shown in Figures 21, 22, and 35, on the side of the first unlocking drive member 3 facing the first connecting portion 101, a sliding fitting portion 31 and a guide inclined surface 32 that are slidingly fitted with the unlocking convex portion 61 are provided. Correspondingly, The sliding fit portion 31 and the guide slope 32 are also arranged in two groups. When the second lock structure is in the unlocked state, the unlocking convex portion 61 is located in the corresponding sliding fitting portion 31; when the unlocking convex portion 61 slides from the sliding fitting portion 31 to the guide slope 32, the second unlocking driver 6 slides and drives the first The second locking toothed plate 4 moves away from the first connecting portion 101 to unlock the second lock structure.

Referring to Fig. 18 and Fig. 19, the above-mentioned limit unlocking structure for driving the reversing limiter 8 to disengage from the driving slider 7 is arranged between the unlocking slider 9 and the reversing limiter 8, and through unlocking The sliding of the sliding block 9 drives the reversing limiting member 8 to break away from the driving sliding block 7 .

Specifically, referring to the drawings, especially as shown in Fig. 18, 19 and Fig. 23, the reversing limit member 8 is slidably arranged on the base part 301 along the direction parallel to the axis line of the rotating shaft 123. A limit projection 81 is provided on the end of the limit member 8 towards the drive slider 7, and the drive slider 7 has a guide chute 71 for slidingly inserting the limit projection 81, and the limit projection 81 can cooperate is inserted in the guide chute 71 and can slide along the guide chute 71, when the push rod frame 30 rotates, when the limit projection 81 resists the side wall of the guide chute 71, it will drive the drive slider 7 together Continue to rotate until the drive slider 7 reaches the first limit position or the second limit position.

The above-mentioned limit unlocking structure includes a driving slope 93 provided on the unlocking slider 9 and a matching slope 82 provided on the reversing limit member 8. When the unlocking slider 9 moves along its sliding direction, the first lock structure is unlocked. When continuing to slide, the driving slope 93 cooperates with the matching slope 82 to drive the reversing limiter 8 to move away from the driving slider 7, so that the limiting protrusion 81 on the driving slider 7 is disengaged from the guide chute 71, At this time, the push rod frame 30 is rotated again, and the reversing limiter 8 no longer drives the driving slider 7 to slide. This folding and unlocking operation is used when the cart frame 100 is folded in the forward direction, and the push rod frame 30 crosses the forward working position to reach the rear side of the rear support 10, or is used for the push rod frame 30 to cross the reverse direction when the cart frame is reversely folded. The position reaches the front support 20 front sides.

Referring to Figures 28, 32, 36, 39, and 41, the second connecting part 201 is also provided with a front convex part 201a, and the first connecting part 301 is correspondingly provided with a rear convex part (not shown in the figure). When the stroller frame 100 is folded, during the relative rotation between the front bracket 20 and the rear bracket 10, the front convex portion 201a gradually presses against the rear slider 501 so that the rear slider 501 goes down along the rear bracket 10, and at the same time The rear convex portion is gradually pressed against the front slider 401 to make the front slider 401 go down along the front bracket 20, so that the rear wheel orientation assembly and the front wheel orientation assembly are in the orientation locking state respectively, which makes when the stroller frame 100 is folded, The front wheel assembly 40 and the rear wheel assembly 50 are directional locked respectively and cannot be steered, and the stroller frame 100 relies on the front wheel assembly 40 and the rear wheel assembly 50 to stand on the ground. At the same time, the front wheel assembly 40 and the rear wheel assembly 50 In any state of the direction, the front and rear wheel assemblies will swing towards the set direction when locked, and the wheels of the front wheel assembly 40 and the rear wheel assembly 50 will extend in the front and rear direction after the cart frame 100 is folded, so that Make the folded vehicle frame more beautiful and smooth.

On the stroller, the front bracket 20 and the rear bracket 10 of the stroller frame 100 can have different widths along the left and right directions of the stroller frame, so that when the front bracket 20 and the rear bracket 10 are folded One can be located between the other in the left and right direction, reducing the folded size of the stroller.

To sum up, when the stroller frame 100 of the stroller is in the unfolded state, the push rod frame 30 has a forward working position and a reverse working position, so that the stroller can be pushed forward and backward, and the push rod The frame 30 is easy to operate during the reversing operation, and when the push rod frame 30 is reversing, it can automatically switch between the directional locking and directional unlocking states of the front wheel assembly 40 and the rear wheel assembly 50, so that it is located in the push direction The wheel assembly on the front side is always in a universal state and the wheel assembly located on the rear side of the pushing direction is all in a directional state, so as to meet the needs of pushing the cart. The stroller frame 100 of the stroller has a forward folded position and a reverse folded position when folded, so that the push rod frame can be directed towards the user regardless of whether the push rod frame is in the forward working position or the reverse working position. The side of the cart is turned over to fold the cart frame, which facilitates the user's operation.

The cart frame 100 can be grafted to the seat frame 300 when used in the expanded state. The seat frame 300 has a plurality of convertible working states on the cart frame 100, and the adjustment of the seat frame 300 working state and pushing The reversing operations of the rod holders 30 are independent of each other. The seat frame 300 can be folded on one side of the stroller frame 100 when the stroller frame 100 is folded, so as to realize the folding of the stroller with a seat pocket.

The cart frame 100 only needs to operate the unlocking operation part to drive the unlocking slider 9 to slide during the folding operation, so that the push rod frame 30 can be unlocked. After the push rod frame 30 is unlocked, continuing to rotate will automatically drive the front bracket 20 and The rear brackets 10 are unlocked, and then the cart frame 100 is lifted as a whole, so that the front bracket 20 and the rear bracket 10 can automatically rotate and move closer to realize the folding of the cart frame 100, and at the same time, the front wheel assembly 40 and the rear wheel The assembly 50 is automatically converted to an orientation locked state. The folded stroller has a very compact structure, takes up less space, and is easy to carry and store.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present utility model, and its purpose is to enable those familiar with this technology to understand the content of the present utility model and implement it accordingly, and not to limit the protection scope of the present utility model. All equivalent changes or modifications made according to the spirit of the utility model shall fall within the protection scope of the utility model.

Claims (14)

1. A children's stroller, comprising a stroller frame with an unfolded state and a folded state, said stroller frame comprising a push rod frame, a front bracket and a rear bracket, the bottom of said front bracket is provided with a front wheel assembly, The bottom of the rear bracket is provided with a rear wheel assembly, and the upper end of the front bracket, the upper end of the rear bracket and the lower end of the push rod frame are connected to each other in rotation through a rotating joint. When the trolley frame is in the unfolded state, the push rod frame has a forward working position extending from front to rear and a reverse working position extending from back to front and upward on its rotation stroke, which is characterized in that: When the cart frame is in the folded state, the cart frame has a forward folding position where the cart frame is folded in the rear side of the rear frame and the push rod frame is folded in front of the front frame Side reverse fold position. 2. The children's stroller according to claim 1, characterized in that: a push rod limiting assembly is provided in the rotating joint, and the push rod limiting assembly includes a Rotating reversing limiter, a driving slider that is arranged on the front bracket or the rear bracket and can cooperate with the reversing limiter, and the driving slider has a first The limit position and the second limit position, when the push rod frame is between the forward working position and the reverse working position, the reversing limiter cooperates with the driving slider and When the push rod frame rotates, the drive slider is driven to slide; when the push rod frame is in the forward working position, the drive slider is in the first limit position; when the push rod When the frame is in the reverse working position, the driving slider is in the second limit position, When the push rod frame is rotated and retracted from the forward working position to the rear side of the rear bracket, and when the push rod frame is rotated and retracted from the reverse working position to the front side of the front bracket, There is a disengagement between the reversing limiting member and the driving slider. 3. The children's stroller according to claim 2, characterized in that: the lower end of the push rod frame and the upper end of the rear bracket are rotatably connected around the first rotation center line, and the rear bracket The upper end and the upper end of the front bracket are rotationally connected around the second rotation centerline, the first rotation centerline and the second rotation centerline extend parallel to each other or collinearly, and the rotation joint is provided with a Based on the first lock structure for locking the push rod frame and the rear frame, and the second lock structure for locking the front frame and the rear frame, when the push rod frame is in the front When rotating between the working position and the reverse working position, the first lock structure is unlocked and the second lock structure remains locked; when the push rod frame is rotated from the forward working position to the rear bracket , and when the push rod frame rotates from the reverse working position to the front bracket, the push rod frame drives the second lock structure to unlock. 4. The children's stroller according to claim 3, characterized in that: the rotating joint is also provided with a limit unlocking structure for driving the reversing limiter to disengage from the drive slider, the When the cart frame is converted from the unfolded state to the folded state, the disengagement between the reversing limiter and the driving slider is prior to the unlocking of the second lock structure. 5. The children's stroller according to claim 4, wherein an unlocking member for unlocking the first lock structure is provided on the rotating joint, and the limit unlocking structure is arranged between the unlocking member and the unlocking member. between the reversing limiting parts, and when the unlocking part moves, the reversing limiting part is driven away from the driving slider. 6. The children's stroller according to claim 5, characterized in that: the reversing limiter is slidably arranged on the push rod frame in a direction parallel to the first rotation centerline, and the reversing A limit projection is provided on the limit member towards the end of the driving slider, and the drive slider has a guide chute for slidingly inserting the limit projection, and the limit projection can Fittingly inserted in the guide chute and capable of sliding along the guide chute. 7. The baby stroller according to claim 6, wherein the unlocking member includes an unlocking slider slidably arranged on the push rod frame, and the sliding direction of the unlocking slider is perpendicular to the second A rotation center line, the unlocking slider is provided with a driving slope, and the reversing limiter is provided with a matching slope, when the unlocking slider moves along its sliding direction to unlock the first lock structure When continuing to slide, the driving inclined surface cooperates with the matching inclined surface and drives the reversing limiting member to move away from the driving slider. 8. The children's stroller according to claim 1, wherein the front wheel assembly includes a front wheel joint arranged on the front bracket to rotate around the front steering shaft, and the front bracket is connected to the front wheel joint A front wheel orientation assembly is provided between them, and the rear wheel assembly includes a rear wheel joint that is rotatably connected with the rear support around the rear steering shaft, and a rear wheel orientation assembly is provided between the rear support and the rear wheel joint, The front wheel directional assembly and the rear wheel directional assembly have respectively a directional unlocked state that can be freely steered and a directional locked state that is locked. When the cart frame is in a folded state, the front bracket and the rear bracket are close to each other. Both the rear wheel directional assembly and the front wheel directional assembly are in an orientation locked state. 9. The children's stroller according to claim 2, wherein the front wheel assembly includes a front wheel joint that is arranged on the front bracket to rotate around the front steering shaft, and the front bracket is connected to the front wheel joint A front wheel orientation assembly is provided between them, and the rear wheel assembly includes a rear wheel joint that is rotatably connected with the rear support around the rear steering shaft, and a rear wheel orientation assembly is provided between the rear support and the rear wheel joint, The front wheel directional assembly and the rear wheel directional assembly have respectively a directional unlocked state in which they can freely steer and a directional locked state in which the steering is locked, When the push rod frame is in the forward working position, the driving slider cooperates with the rear wheel orientation assembly to make it in an orientation-locked state, and the front wheel orientation assembly is disengaged from the driving slider Cooperate to be in the directional unlocked state; when the push rod frame is in the reverse working position, the drive slider cooperates with the front wheel directional assembly to make it in the directional locked state, and the rear wheel directional assembly Disengaged from the drive slider to be in a directional unlocked state. 10. The children's stroller according to claim 9, wherein when the stroller frame is in the unfolded state and the push rod frame is located between the forward working position and the reverse working position, the The front wheel directional assembly and the rear wheel directional assembly are separated from the drive slider and are respectively in an directional unlocking state. 11. The children's stroller according to claim 9, wherein the front wheel orientation assembly includes a front orientation member which is arranged on the bottom of the front bracket and is capable of moving toward or away from the front wheel joint, for providing The front directional elastic member which moves toward the front wheel joint, the front slider which is arranged on the front bracket to move up and down along the length extension direction of the front bracket, is used to provide the front slider The front locking elastic piece with the upward movement tendency of the block, and the front connecting piece connected between the front directional piece and the front slider, the front wheel joint is provided with a front for the front directional piece to fit into Orientation groove; The rear wheel orientation assembly includes a rear orientation member which is arranged at the bottom of the rear support so as to move toward or away from the rear wheel joint, and a rear orientation elastic for providing a tendency for the rear orientation member to move toward the rear wheel joint. Parts, a rear slider arranged on the rear bracket to move up and down along the length extension direction of the rear bracket, a rear locking elastic member for providing the upward movement tendency of the rear slider, and a rear locking elastic member connected to the rear orientation The rear connecting piece between the piece and the rear slider, and the rear wheel joint is provided with a rear orientation slot for the insertion of the rear orientation piece. 12. The children's stroller according to claim 11, characterized in that: when the push rod frame is in the forward working position, the driving slider abuts against the rear slider to make it go down , the rear orientation piece is fitly inserted in the rear orientation groove so that the rear wheel orientation assembly is in an orientation-locked state, and the drive slider is disengaged from the front slider; when the push rod frame When it is in the reverse working position, the driving slider abuts against the front slider to make it go down, and the front directional piece is fitly inserted into the front directional groove so that the front wheel The orientation assembly is in an orientation-locked state, and the driving slider is separated from the rear slider. 13. The children's stroller according to claim 11, characterized in that: the upper end of the front bracket is provided with a forward protrusion, and the upper end of the rear bracket is provided with a rear protrusion, when the stroller When the frame is in the folded state, the front bracket and the rear bracket are close to each other, the front convex part is pressed against the rear slider, and the rear convex part is pressed against the front slider, respectively, so that the The rear wheel directional assembly and the front wheel directional assembly are in the directional lock state. 14. The children's stroller according to any one of claims 1 to 13, wherein the children's stroller further comprises a foldable seat frame, and the seat frame is installed on the pushchair through a seat bracket. On the frame of the trolley, when the stroller is in the forward folded position and the reverse folded position, the seat frame is folded on the front side of the front bracket.