CN104828119B - stroller - Google Patents

Abstract

The invention discloses a child stroller, which comprises a foldable stroller frame, a front wheel assembly, a rear wheel assembly, a foldable seat pocket frame and a first locking mechanism for locking the stroller frame in an unfolded state, wherein the seat pocket frame is detachably connected with the stroller frame, when the seat pocket frame is connected with the stroller frame, the seat pocket frame is rotatably connected with the stroller frame, the seat pocket frame comprises an upper surrounding frame and a lower surrounding frame which are rotatably connected, the stroller further comprises a second locking mechanism for locking the seat pocket frame in the unfolded state and a first unlocking mechanism for unlocking the first locking mechanism and the second locking mechanism simultaneously. This children's shallow seat pocket frame can forward or reverse install on the shallow frame, and after seat pocket frame forward or reverse installation was on the shallow frame, through carrying and drawing first release mechanism, can with shallow frame and seat pocket frame unblock simultaneously, alright take seat pocket frame an organic whole folding with this children's shallow for this children's shallow is folding convenient, portable and deposit.

Description

stroller

technical field

The invention relates to a stroller for children.

Background technique

Children's strollers in the prior art usually include a seat frame, and when the stroller needs to be folded, the seat frame is usually removed from the stroller, and then the stroller frame is folded; or, the seat frame can be Folding, first unlock the locking mechanism on the seat frame and then fold the seat frame, then unlock the locking mechanism of the stroller frame and then fold the frame, that is, the folding of the seat frame and the stroller frame is separated It is carried out independently, which makes the folding operation of the children's stroller more troublesome, and the use of the children's stroller is more inconvenient.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an improved stroller for children.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A stroller for children, comprising a stroller frame in an unfolded state and a folded state, a front wheel assembly arranged at the front bottom of the stroller frame, and a rear wheel assembly arranged at the bottom rear of the stroller frame , a foldable seat frame arranged on the cart frame, a first locking mechanism for locking the cart frame in an unfolded state, the seat frame is connected to the cart frame detachably connected, and when the seat frame is connected to the cart frame, the connection between the seat frame and the cart frame is a rotational connection, and the seat frame includes an upper circumference frame and a lower frame, the lower end of the upper frame is rotatably connected with the upper end of the lower frame, and the trolley also includes a second locking mechanism for locking the seat frame in an unfolded state . A first unlocking mechanism for simultaneously unlocking the first locking mechanism and the second locking mechanism.

Preferably, said cart further comprises a second unlocking mechanism for only unlocking said first locking mechanism.

Preferably, the seat frame is provided with a first connecting piece, the first connecting piece is located between the seat frame and the stroller frame and is connected to the seat frame and the stroller The frame is rotatably connected with the same axis through the first shaft.

Preferably,

The first locking mechanism includes a first locking piece that can be movably arranged on a part of the cart frame, and a first matching portion that cooperates and locks with the first locking piece, and the first matching portion is set to On the other part of the trolley frame that is movably connected with the one part, when the first locking mechanism is in the locked state, the first locking part cooperates with the first matching part to lock , when the first locking mechanism is in an unlocked state, the first locking member is separated from the first mating portion;

The second locking mechanism includes a second locking piece that can be movably arranged on one of the two parts of the upper surround frame and the lower surround frame, and can be movably arranged on the seat frame and the lower surround frame. The third locking part on one of the two parts of the first connecting part, the second matching part that cooperates and locks with the second locking part, and the third matching part that cooperates and locks with the third locking part part, the second matching part is provided on the other part of the upper frame and the lower frame, and the third matching part is provided on the seat frame and the first On the other part of the two parts of the connector, when the second locking mechanism is locked, the second locking part cooperates with the second matching part to lock, and the third locking part cooperates with the first locking part. The three matching parts cooperate and lock, when the second locking mechanism is unlocked, the second locking part is separated from the second matching part, and the third locking part is separated from the third matching part;

The first unlocking mechanism includes a first driving part that can be movably arranged on the first connecting part, and the movement of the first driving part simultaneously drives the first locking part to move away from the first matching part , the second locking member moves away from the second matching portion, and the third locking member moves away from the third matching portion.

Further, the first matching portion is a first lock groove, and when the first locking mechanism is in a locked state, the first locking member is partially located in the first lock groove, and when the first locking mechanism When in the unlocked state, the first locking part is separated from the first locking groove; the second locking part is movably arranged in the two parts of the upper surrounding frame and the lower surrounding frame away from the first On the part of the connecting part, the second matching part is a second locking groove, and the third locking part is movably arranged in the two parts of the upper surrounding frame and the lower surrounding frame close to the first connecting part On the component, the third matching part is a third locking groove, when the second locking mechanism is locked, the second locking member is partially located in the second locking groove, and the third locking member is partially located in the second locking groove. In the third locking slot, when the second locking mechanism is unlocked, the second locking piece is separated from the second locking slot, and the third locking piece is separated from the third locking slot.

Furthermore, the first locking part is rotatably connected to the one part of the cart frame through a second shaft; the second locking part is slidably arranged on the lower frame and sleeved Sliding on the first shaft along the axial direction of the first shaft, the third locking piece is slidably provided on the upper frame, and the sliding direction of the third locking piece is the same as that of the second locking piece. The sliding direction of the locking part is parallel; the first driving part is slidably arranged on the first connecting part, and the sliding direction of the first driving part slides with the second locking part and the third locking part The directions are perpendicular to each other, the first driving member is provided with a first inclined plane, a second inclined plane and a third inclined plane, and the first locking member is provided with a fourth inclined plane matching with the first inclined plane. The second locking member is provided with a fifth inclined surface that matches the second inclined surface, and the third locking member is provided with a sixth inclined surface that cooperates with the third inclined surface. When unlocking, the first drive The sliding part slides, and the cooperation between the first slope and the fourth slope drives the first locking part to separate from the first lock groove, and the cooperation between the second slope and the fifth slope drives the The second locking piece is separated from the second locking groove, and the third locking piece is separated from the third locking groove through the cooperation of the third inclined surface and the sixth inclined surface; the first unlocking mechanism also It includes a first lifting belt connected to the first driving member, and the first driving member is driven to slide by lifting up or pulling down the first lifting belt.

Further, the stroller also includes a second unlocking mechanism only for unlocking the first locking mechanism, and the second unlocking mechanism includes a second driving member slidably provided on the frame of the stroller . A second lifting belt connected with the second driving part, the second driving part is provided with a seventh slope, and the first locking part is provided with an eighth slope matching the seventh slope. an inclined surface, when the second lifting belt is pulled to slide the second driving member, the cooperation between the seventh inclined surface and the eighth inclined surface drives the first locking member to move so that the first locking mechanism unlock.

Further, the baby stroller is also provided with a first reset element that drives the second locking piece and the third locking piece to switch from the unlocked state to the locked state, and the first reset element includes a first spring and a The second spring, the two ends of the first spring are respectively connected with one of the two parts of the upper frame and the lower frame and the second locking member, and the two ends of the second spring They are respectively connected with one of the two parts of the seat frame and the first connecting part and the third locking part.

Further, the trolley also includes an adjustment mechanism for adjusting the angle between the seat frame and the horizontal plane, the adjustment mechanism includes an adjustment handle arranged on the seat frame and one end connected to the adjustment handle a pulling cable, the other end of the pulling cable is connected to the third locking member.

Preferably, the seat frame can be mounted on the stroller frame forwardly or reversely, and when the seat frame is mounted forwardly or reversely on the stroller frame, the seat frame A fixing device for fixing the seat frame and the cart frame is provided between the frame and the cart frame, and the fixing device includes a rotating connection with the first connecting member through a third shaft. The fourth locking piece, the cart frame is provided with a fourth lock groove, when the fixing device is locked, the fourth locking piece is partially located in the fourth locking groove, when the fixing device is unlocked , the fourth locking member is separated from the fourth locking slot.

Further, a second connecting piece is provided between the first connecting piece and the cart frame, and the first connecting piece, the second connecting piece, and the cart frame pass through the first connecting piece A shaft is connected to the same shaft for rotation, and the fourth locking groove is arranged on the second connecting member.

Further, the trolley also includes a button capable of unlocking the fixing device, the button is slidably provided on the first connecting piece, when the button is pressed, the button and the fourth locking piece The fourth locking member is driven to rotate around the third axis, so that the fourth locking member is separated from the fourth locking groove; A second reset element that drives the fourth locking member to transition from an unlocked state to a locked state.

Preferably, the trolley frame includes side brackets located on the left and right sides of the trolley frame, the left and right sides of the seat frame are rotatably connected to the side brackets on both sides, and the side brackets on each side Side stand includes:

a front bracket, the front wheel assembly is arranged at the front of the front bracket;

a rear bracket, the rear wheel assembly is located at the lower part of the rear bracket;

A push rod, the lower end of the push rod, the rear end of the front bracket, and the upper end of the rear bracket are connected with the same axis for rotation;

a sliding block, the sliding block is slidably arranged on the rear support along the length direction of the rear support;

a first connecting rod, the two ends of the first connecting rod are respectively rotatably connected to the lower part of the push rod and the sliding block;

The second connecting rod, the two ends of the second connecting rod are respectively rotatably connected with the rear part of the front bracket and the sliding block.

Further, the first locking mechanism includes a first locking piece, and the first locking piece is rotatably connected to the sliding block.

Preferably, the cart frame includes side brackets located on the left and right sides of the cart frame, and the side brackets on each side include a front bracket, a rear bracket, and a push rod that are connected to the same axis by rotating joints, The swivel joint includes a rear end portion of the front bracket, an upper end portion of the rear bracket, and a lower end portion of the push rod, which protrude toward the inside or outside of the cart. Out of the collar, the rear end of the front bracket, the upper end of the rear bracket, and the lower end of the push rod are respectively provided with a first collar and a second collar on the other two parts. The collar, the first collar and the second collar are sequentially sleeved on the outer circumference of the collar along the axial extension direction of the collar and can rotate around the collar.

Due to the application of the above-mentioned technical scheme, the present invention has the following advantages compared with the prior art: the structure of the children's stroller of the present invention is simple, and the seat frame can be installed on the cart frame in the forward or reverse direction. Or reversely installed on the stroller frame, by pulling the first unlocking mechanism, the stroller frame and the seat frame can be unlocked at the same time, and the child stroller with seat frame can be folded integrally, so that the The stroller is easy to fold for easy portability and storage.

Description of drawings

Accompanying drawing 1 is the three-dimensional view of the stroller of the present invention in the unfolded state (the seat frame is installed in the forward direction, and the second unlocking mechanism is removed);

Accompanying drawing 2 is the three-dimensional view of the children's stroller in the unfolded state of the present invention (the seat frame is installed in reverse, and the second unlocking mechanism is removed);

Accompanying drawing 3 is the exploded schematic view of place A in accompanying drawing 1;

Accompanying drawing 4 is the schematic sectional view of place A in accompanying drawing 1;

Accompanying drawing 5 is the structural schematic diagram of the first locking mechanism of the children's stroller in the locked state;

Accompanying drawing 6 is the structural schematic diagram of the first locking mechanism of the children's stroller in the unlocked state;

Accompanying drawing 7 is the structure diagram of the fixing device of the children's stroller in the locked state of the present invention;

Accompanying drawing 8 is the structure diagram of the fixing device of the children's stroller in the unlocked state of the present invention;

Accompanying drawing 9 is the perspective view of the stroller of the present invention when it is in the sleeping basket state (the seat frame is installed in the forward direction, and the second unlocking mechanism is removed);

Accompanying drawing 10 is one of perspective views of the children's stroller of the present invention in a half-folded state (the seat frame is installed forward);

Accompanying drawing 11 is one of perspective views of the children's stroller in the folded state of the present invention (the seat frame is installed in the forward direction);

Accompanying drawing 12 is the second perspective view of the children's stroller in the folded state of the present invention (the seat frame is installed in reverse);

Accompanying drawing 13 is the third perspective view of the children's stroller in the folded state of the present invention (the seat frame is removed).

Among them: 1. side bracket; 11. front bracket; 111. second collar; 12. rear bracket; 121. first matching part; 122. collar; 13. push rod; 131. first collar; 14. Sliding block; 15, the first connecting rod; 16, the second connecting rod; 18, the second connecting piece; 181, the fourth lock slot;

2. Seat frame; 21. Upper frame; 211. Second matching part; 22. Lower frame; 23. First connector; 231. Third matching part; 24. First shaft;

3. The first locking mechanism; 31. The second shaft; 32. The first locking member; 321. The fourth slope; 322. The eighth slope;

4. The second locking mechanism; 41. The second locking member; 411. The fifth slope; 42. The third locking member; 421. The sixth slope;

5. Unlocking mechanism; 51. The first driving member; 511. The first inclined plane; 512. The second inclined plane; 513. The third inclined plane; 52. The first lifting belt;

6. The second unlocking mechanism; 61. The second driving member; 611. The seventh slope; 62. The second lifting belt;

7. Fixing device; 71. The third shaft; 72. The fourth locking member; 721. The pressing end; 8. Button;

9. Adjustment mechanism; 91. Adjustment handle;

100, front wheel assembly; 200, rear wheel assembly.

detailed description

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Referring to the children's stroller shown in Figures 1 to 13, it includes a stroller frame in an unfolded state and a folded state, a front wheel assembly 100 located at the bottom front of the stroller frame, and a front wheel assembly 100 located at the bottom rear of the stroller frame. The rear wheel assembly 200, the foldable seat frame 2 arranged on the stroller frame, the first locking mechanism 3 for locking the stroller frame in the unfolded state, and the first locking mechanism 3 for locking the seat frame 2 in the unfolded state The second locking mechanism 4 in the state, and the first unlocking mechanism 5 for simultaneously unlocking the first locking mechanism 3 and the second locking mechanism 4 .

The cart frame includes side brackets 1 respectively located on the left and right sides of the cart, and the side brackets 1 on each side include a front bracket 11, a rear bracket 12, a push rod 13, a sliding block 14, a first connecting rod 15 and a second connecting rod 16. The front wheel assembly 100 is located at the front portion of the front bracket 11, and the rear wheel assembly 200 is located at the bottom of the rear bracket 12. The rear end of the front bracket 11, the upper end of the rear bracket 12, and the lower end of the push rod 13 are connected with the same shaft. , the sliding block 14 can be slidably arranged on the rear support 12 along the length direction of the rear support 12, and the two ends of the first connecting rod 15 are respectively rotatably connected with the bottom of the push rod 13 and the sliding block 14, and the second connecting rod 16 Both ends are rotatably connected with the rear portion of the front support 11 and the sliding block 14 respectively. Like this, just constitute a slider crank mechanism between the front support 11, the rear support 12, the sliding block 14, the second connecting rod 16, and just form between the rear support 12, the push rod 13, the sliding block 14, the first connecting rod 15. Another slider crank mechanism.

Specifically, the rear end of the front support 11, the upper end of the rear support 12, and the lower end of the push rod 13 are connected to the same axis through a rotating joint. Specifically, the rotating joint includes the rear end of the front support 11 and the rear support. 12, the lower end of the push rod 13, the collar 122 protruding to the inside or outside of the cart, the rear end of the front bracket 11, the upper end of the rear bracket 12, the push The other two parts of the three parts at the lower end of the rod 13 are respectively provided with a first collar 131 and a second collar 111, and the first collar 131 and the second collar 111 extend along the axial direction of the collar 122. They are sleeved on the outer circumference of the sleeve neck 122 in turn and can rotate around the sleeve neck 122 . In this embodiment, the upper end of the rear bracket 12 is provided with a collar 122 protruding inwardly of the cart, the first collar 131 is arranged on the lower end of the push rod 13, and the second collar 111 is arranged on the front bracket 11. rear end.

The left and right sides of the seat frame 2 are rotatably connected with the side supports 1 on both sides. Specifically, the seat frame 2 includes an upper frame 21 and a lower frame 22 which are rotatably connected. The upper end of the surrounding frame 22 and the side bracket 1 are rotatably connected with the same axis through the first shaft 24 .

Further, the seat frame 2 is provided with a first connecting piece 23 for connecting with the stroller frame, the first connecting piece 23 is located between the seat piece 2 and the side bracket 1 and is connected to the seat frame 2 and the side frame. The support 1 is connected with the same axis through the first shaft 24 for rotation. The side bracket 1 also includes a second connecting piece 18. In this embodiment, the second connecting piece 18 is the cover of the above-mentioned rotating joint, and the seat frame 2, the first connecting piece 23, and the second connecting piece 18 pass through the first connecting piece 18. Shaft 24 is rotatably connected with the same shaft. Simultaneously in this embodiment, along the extension direction of the first shaft 24, the rear bracket 12, the push rod 13, the front bracket 11, the second connecting piece 18, the first connecting piece 23, the upper surrounding frame 21, and the lower surrounding frame 22 from Set from outside to inside.

The first locking mechanism 3 can be arranged between any two movably connected parts in the above-mentioned two crank-slider mechanisms, as long as the positions of these two parts are locked, the position of the crank-slider mechanism where it is located is just locked, Thereby the position of another slider crank mechanism is also locked. In this embodiment, the first locking mechanism 3 is located between the sliding block 14 and the rear bracket 12. When the position between the sliding block 14 and the rear bracket 12 is locked, the front bracket 11, the rear bracket 12, the sliding block 14, The positions of the slider crank mechanism formed by the second connecting rod 16 and the slider crank mechanism formed by the rear bracket 12, the push rod 13, the slide block 14 and the first connecting rod 15 are all locked, so that the cart frame is locked.

As shown in Fig. 3, Fig. 5 and Fig. 6, the first locking mechanism 3 includes a first locking member 32 which is movably connected with the sliding block 14, and a first locking member 32 which is arranged on the rear bracket 12 and locks with the first locking member 32. A matching part 121, activity refers to rotation or sliding, that is, the first locking member 32 is slidably arranged on the sliding block 14, or the first locking member 32 is rotationally connected with the sliding block 14. In this embodiment, the first locking The member 32 is rotatably connected to the sliding block 14 through the second shaft 31 , and the first matching portion 121 is a first locking groove. When the first locking mechanism 3 is in the locked state, as shown in FIG. 5 , the first locking member 32 cooperates with the first mating portion 121 to lock, that is, the first locking member 32 is partially located in the first lock groove; when the first locking mechanism 3. When unlocking, as shown in FIG. 6, the first locking member 32 is separated from the first matching portion 121, at this time the sliding block 14 can slide up and down along the rear bracket 12, and the stroller frame can be folded.

As shown in Figures 3 and 4, the second locking mechanism 4 includes a second locking member 41 that can be movably arranged on one of the two parts of the upper surrounding frame 21 and the lower surrounding frame 22, and can be movably arranged on one of the two parts. The third locking part 42 on one of the two parts of the seat frame 2 and the first connecting part 23, and the third locking part 42 on the other part of the upper surrounding frame 21 and the lower surrounding frame 22. The second matching part 211 that is mated and locked by the two locking pieces 41, and the third mating portion 211 that is provided on the other of the two parts of the seat frame 2 and the first connecting piece 23 and that is matched and locked by the third locking piece 42. Section 231. In order to make the structure of the second locking mechanism 4 and the first unlocking mechanism 5 simple, the second locking member 41 is movably arranged on the part of the two parts of the upper surrounding frame 21 and the lower surrounding frame 22 which is far away from the part 23 of the first connecting part. The third locking part 42 is movably arranged on the part close to the first connecting part 23 among the two parts of the upper surrounding frame 21 and the lower surrounding frame 22 , and the moving here also refers to turning or sliding. Specifically, in this embodiment, the second locking member 41 is slidably provided on the lower frame 22, and the second locking member 41 is sleeved on the first shaft 24, and slides along the axial direction of the first shaft 24. The three locking pieces 42 are slidably disposed on the upper frame 21 , and the sliding direction of the third locking piece 42 is parallel to the sliding direction of the second locking piece 41 . Meanwhile, in this embodiment, the second matching portion 211 is a second locking groove and is provided on the upper frame 21 , and the third matching portion 231 is a third locking groove and is provided on the first connecting member 23 . When the second locking mechanism 4 is in the locked state, the second locking member 41 cooperates with the second matching portion 211 to lock, that is, the second locking member 41 is partially located in the second locking groove, and the upper surrounding frame 21 and the lower surrounding frame 22 are locked together. Connected together, the third locking part 42 cooperates with the third matching part 231 to lock, that is, the third locking part 42 is partially located in the third locking groove, and connects the upper frame 21 and the first connecting part 23 together; when the second When the second locking mechanism 4 is in the unlocked state, the second locking part 41 is separated from the second matching part 211, and the third locking part 42 is separated from the third matching part 231 at the same time. The first shaft 24 rotates so that the seat frame 2 can be folded.

As shown in FIGS. 3 and 4 , the first unlocking mechanism 5 includes a first driving member 51 that can be movably arranged on the first connecting member 23 and a first pull belt 52 connected with the first driving member 51, through Drive the first driving member 51 to move, drive the first locking member 32, the second locking member 41 and the third locking member 42 to move simultaneously, so that the first locking member 32 is separated from the first matching portion 121, and the second locking member 41 is separated from the second locking member. The second matching portion 211 and the third locking member 42 are disengaged from the third matching portion 231 , so that the first locking mechanism 3 and the second locking mechanism 4 are simultaneously unlocked.

There are many ways for the first driving member 51 to drive the first locking member 32, the second locking member 41 and the third locking member 42 to move simultaneously. For example, the first driving member 51 can be slidably arranged on the first connecting member 23, A locking member 32 is rotatably connected to the sliding block 14, the second locking member 41 is rotatably connected to the lower frame 22, and the third locking member 42 is rotatably connected to the upper frame 21. When the first driving member 51 slides, respectively Abut against the first locking piece 32, the second locking piece 41 and the third locking piece 42, so that the first locking piece 32 is rotated away from the first matching portion 121, and the second locking piece 41 is rotated away from the second matching portion 211 and the third locking piece 211. The component 42 is rotated away from the third matching portion 231 . For another example, the first driving member 51 is rotatably arranged on the first connecting member 23, the first locking member 32 is rotatably connected to the sliding block 14, the second locking member 41 is slidably connected to the lower frame 22, and the third locking member 41 is slidably connected to the lower frame 22. The member 42 is slidingly connected with the upper frame 21, and the first driving member 51 is respectively provided with a first ring gear and a second ring gear, and the second locking member 41 is a first rack meshed with the first ring gear, and the second The three locking parts 42 are the second rack meshed with the second ring gear. When the first driving part 51 rotates, the first driving part 51 abuts against the first locking part 32, so that the first locking part 32 rotates away from the first locking part. The matching part 121, the first ring gear meshes with the first rack to make the second locking part 41 slide away from the second matching part 211, the second ring gear meshes with the second rack to make the third locking part 42 slide away from the third Cooperating part 231 .

Specifically, in this embodiment, the first driving member 51 is slidably provided on the first connecting member 23, and the sliding direction of the first driving member 51 is perpendicular to the sliding directions of the second locking member 41 and the third locking member 42. . The first driving member 51 is respectively provided with a first inclined surface 511, a second inclined surface 512 and a third inclined surface 513, and the first locking member 32 is provided with a fourth inclined surface 321 matched with the first inclined surface 511. 32, the fourth inclined surface 321 and the first locking part 32 located in the first mating part 121 are respectively located on both sides of the second shaft 31, and the second locking part 41 is provided with a fifth The slope 411 and the third locking member 42 are provided with a sixth slope 421 matching with the third slope 513 . When unlocking, the first driving member 51 is driven to slide downward by pulling the first lifting belt 52, and the first inclined surface 511 on the first driving member 51 cooperates with the fourth inclined surface 321 on the first locking member 32 to drive the first driving member 51 to slide downward. A locking member 32 rotates around the second shaft 31 to separate the first locking member 32 from the first mating portion 121 to unlock the first locking mechanism 3; at the same time, the second inclined surface 512 on the first driving member 51 and the second locking member 41 The fifth slant 411 on the first driver 51 is matched with the sixth slant 421 on the third locking member 42 to drive the second locking member 41 to slide and separate from the second matching portion 211 . The third locking member 42 is driven to slide and separate from the third matching portion 231 , thereby unlocking the second locking unit 4 .

The stroller is also provided with a first reset element (not shown) that drives the second locking member 41 and the third locking member 42 from the unlocked state to the locked state. The first reset element includes a first spring and a second spring. Two springs, the two ends of the first spring are respectively connected with one of the two parts of the upper frame 21 and the lower frame 22 and the second locking member 41, and the two ends of the second spring are connected with the seat frame 2 and the second spring respectively. One of the two parts of a connecting piece 23 is connected to the third locking piece 42 . In this embodiment, both ends of the first spring are respectively connected to the lower frame 22 and the second locking member 41 , and both ends of the second spring are respectively connected to the upper frame 21 and the third locking member 42 .

The second unlocking mechanism 6 that can only release the locked state of the first locking mechanism 3 when it is pulled is also provided on the stroller, as shown in Figures 3, 5 and 6, the second unlocking mechanism 6 includes a slidable The second driving member 61 provided on the rear bracket 12 and the second lifting belt 62 connected with the second driving member 61 . The second drive member 61 is provided with a seventh inclined surface 611, and the first locking member 32 is provided with an eighth inclined surface 322 matching the seventh inclined surface 611. On the first locking member 32, the eighth inclined surface 322 and the first locking The parts of the member 32 located in the first matching portion 121 are respectively located on two sides of the second shaft 31 . Pulling the second lifting belt 62 drives the second driving member 61 to slide downward on the rear bracket 12, and the seventh inclined surface 611 on the second driving member 61 cooperates with the eighth inclined surface 322 on the first locking member 32 to drive The first locking member 32 rotates around the second shaft 31 to disengage the first locking member 32 from the first matching portion 121 , thereby unlocking the first locking mechanism 3 .

Seat frame 2 can be positively or reversely installed on the cart frame, for the convenience of seat frame 2 positive and negative or reverse installation, seat frame 2 is detachably connected with cart frame, seat frame 2 and the cart frame are also provided with a fixing device 7 that makes the seat pocket frame 2 and the cart frame relatively fixed after the seat pocket part 2 is installed on the cart frame. Specifically, as shown in Fig. 3, Fig. 7 and Fig. 8, the fixing device 7 includes a fourth locking part 72 which is rotatably connected with the first connecting part 23 through a third shaft 71, and a fourth locking part 72 is arranged on the cart frame. The locking slot 181 , specifically, the fourth locking slot 181 is disposed on the second connecting member 18 . When the fixing device 7 is locked, the fourth locking member 72 is partly located in the fourth locking groove 181, as shown in Figure 7; when the fixing device 7 is unlocked, the fourth locking member 72 is separated from the fourth locking groove 181, as shown in Figure 8 shown. The first connecting piece 23 is also provided with a button 8 capable of unlocking the fixing device 7, and the fourth locking piece 72 is provided with a pressing end 721 that abuts against the button 8 when the button 8 slides. On the fourth locking piece 72, press The end 721 and the portion of the fourth locking member 72 located in the fourth locking groove 181 are respectively located on two sides of the third shaft 71 . When the button 8 is pressed, the button 8 slides on the first connecting member 23, and the button 8 abuts against the pressing end 721 on the fourth locking member 72, thereby driving the fourth locking member 72 to rotate around the third shaft 71, so that the fourth locking member 72 is locked. Part 72 breaks away from the fourth lock groove 181, thereby unlocking the fixing device 7, the seat frame 2 can be disassembled from the cart frame, and installed on the cart frame in the forward or direction direction, when the seat frame 2 is removed from the cart frame When dismounting on the cart frame, the first connecting member 23 and the first axle 24 are dismounted from the cart frame together with the seat pocket frame 2 . A second reset element (not shown in the figure) is also arranged between the first connecting piece 23 and the fourth locking piece 72 to drive the fourth locking piece 72 from the unlocked state to the locked state. The second reset element adopts a spring, Two ends of the spring are respectively connected with the first connecting member 23 and the fourth locking member 72 . On the fourth locking member 72 , the second resetting element and the position of the fourth locking member 72 located in the fourth locking groove 181 are respectively located on two sides of the third shaft 71 .

The cart also includes an adjustment mechanism 9 for adjusting the position of the seat frame 2, through which the angle between the seat frame 2 and the horizontal plane can be adjusted, and the seat frame 2 can even be adjusted to the sleeping basket state, as shown in Figure 9 shown. The adjusting mechanism 9 includes an adjusting handle 91 arranged on the seat frame 2 and a dragging cable (not shown in the figure) with one end connected to the adjusting handle 91 , and the other end of the dragging cable is connected to the third locking member 42 . Press the adjustment handle 91, pull the third locking piece 42 through the traction cable, so that the third locking piece 42 is separated from the third matching part 231. The connecting part 23 rotates, and on the first connecting part 23, there are multiple third matching parts 231. When the seat frame 2 rotates, the third locking part 42 can be inserted into the third matching parts 231 at different positions, thereby realizing Multi-gear adjustment of pocket frame 2. The upper surrounding frame 21 or the lower surrounding frame 22 has a lumen, and the traction cable is arranged in the lumen of the upper surrounding frame 21 or the lower surrounding frame 22 .

When the cart was in the unfolded state, the first locking mechanism 3 was locked, and a triangle was formed between the front bracket 11, the rear bracket 12, and the second connecting rod 16, and between the rear bracket 12, the push rod 13 and the first connecting rod 15. Another triangle is formed, so that the stroller frame has good rigidity and is in a stable unfolded state. At the same time, the second locking mechanism 4 is locked, and the seat frame 2 can be erected on the top of the stroller frame forwardly or reversely, such as Figure 1 and Figure 2 show.

When the stroller is folded, as shown in Figure 1, the seat frame 2 is forwardly installed on the stroller frame, and when folded, as shown in Figure 10, the first pull belt 52 is pulled to drive the first drive The sliding part 51 drives the first locking part 32 to rotate around the second shaft 31, so that the first locking mechanism 3 is unlocked. After the first locking mechanism 3 is unlocked, push down the push rod 13, so that the push rod 13 is turned downwards and the rear bracket 12 Close together, the first connecting rod 15 drives the sliding block 14 to slide down along the rear bracket 12 during the process of turning down the push rod 13, and the second connecting rod 16 pulls the front bracket 11 to turn backward and move closer to the rear bracket 12; A driving part 51 slides, drives the second locking part 41 and the third locking part 42 to slide, so that the second locking mechanism 4 is unlocked, and the upper frame 21 of the seat frame 2 is turned down with the push rod 13 and moves closer to the rear bracket 12. The lower frame 22 of the seat frame 2 turns backwards with the front bracket 11 and closes to the rear bracket 12, and finally folds as shown in FIG. 11 .

As shown in Figure 2, when the seat frame 2 is reversely installed on the cart frame, when folding, the lower frame 22 of the seat frame 2 is turned down with the push rod 13 and closes to the rear support 12, and the seat frame 2 The upper frame 21 of the front frame 11 is turned backwards with the front frame 11 and closes to the rear frame 12. The rest is the same as the folding process when the seat frame 2 is installed in the forward direction.

After the seat frame 2 is disassembled from the cart frame, the cart frame can also be folded separately. At this time, the second lifting belt 62 is pulled to drive the second driving member 61 to slide, and the first locking member 32 is driven to rotate around the second The shaft 31 rotates to unlock the first locking mechanism 3. After the first locking mechanism 3 is unlocked, press the push rod 13 to turn the push rod 13 downwards and move closer to the rear bracket 12. When the push rod 13 turns down, it passes through the first The connecting rod 15 drives the sliding block 14 to slide down along the rear bracket 12, and the front bracket 11 is pulled by the second connecting rod 16 to turn backward and close to the rear bracket 12, and finally fold as shown in FIG. 13 .

When the stroller needs to be expanded, the push rod 13 is first lifted up until the stroller frame is fully unfolded, at this moment, the first locking mechanism 3 automatically locks the side bracket 1 in the unfolded state, and then turns over the upper frame 21 and the lower frame 22 to the unfolded state, the second locking mechanism 4 is locked, and the whole vehicle frame is in a stable unfolded state.

To sum up, in the children's stroller of the present invention, when the stroller frame is in the unfolded state, a triangular structure is formed between the front bracket, the rear bracket, and the second connecting rod, and between the rear bracket, the push rod, and the first connecting rod. , so that the cart frame has strong rigidity and good stability in the unfolded state. At the same time, the seat frame of the stroller can be installed on the stroller frame forwardly or reversely. When the seat frame is installed forwardly or reversely on the stroller frame, by pulling the first unlocking mechanism, The stroller frame and the seat frame can be unlocked at the same time, so that the child stroller can be folded together with the seat frame, and when the seat frame is disassembled from the stroller frame, the stroller frame can also be folded separately. This makes the child stroller easy to fold, easy to carry and store. In addition, the stroller is also equipped with a seat adjustment function, the seat frame can form different angles with the horizontal plane, and the seat frame can even be adjusted from the seat posture to the sleeping basket state, making the stroller more convenient to use. Convenience.

The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (12)

1. A stroller for children, comprising a stroller frame with an unfolded state and a folded state, a front wheel assembly disposed at the bottom front portion of the stroller frame, a rear wheel assembly disposed at the bottom rear portion of the stroller frame A wheel assembly, a foldable seat frame arranged on the cart frame, and a first locking mechanism for locking the cart frame in an unfolded state are characterized in that: the seat frame and the The cart frame is detachably connected, and when the seat frame is connected to the cart frame, the connection between the seat frame and the cart frame is a rotational connection, and the The seat frame includes an upper frame and a lower frame, the lower end of the upper frame is rotatably connected with the upper end of the lower frame, and the trolley also includes a state of the second locking mechanism, a first unlocking mechanism for simultaneously unlocking the first locking mechanism and the second locking mechanism; The seat frame is provided with a first connecting piece, and the first connecting piece is located between the seat frame and the stroller frame and passes through the seat frame and the stroller frame through the first connecting piece. One shaft is connected with the same shaft for rotation; The first locking mechanism includes a first locking piece that can be movably arranged on a part of the cart frame, and a first matching portion that cooperates and locks with the first locking piece, and the first matching portion is set to On the other part of the trolley frame that is movably connected with the one part, when the first locking mechanism is in the locked state, the first locking part cooperates with the first matching part to lock , when the first locking mechanism is in an unlocked state, the first locking member is separated from the first mating portion; The second locking mechanism includes a second locking piece that can be movably arranged on one of the two parts of the upper surround frame and the lower surround frame, and can be movably arranged on the seat frame and the lower surround frame. The third locking part on one of the two parts of the first connecting part, the second matching part that cooperates and locks with the second locking part, and the third matching part that cooperates and locks with the third locking part part, the second matching part is provided on the other part of the upper frame and the lower frame, and the third matching part is provided on the seat frame and the first On the other part of the two parts of the connector, when the second locking mechanism is locked, the second locking part cooperates with the second matching part to lock, and the third locking part cooperates with the first locking part. The three matching parts cooperate and lock, when the second locking mechanism is unlocked, the second locking part is separated from the second matching part, and the third locking part is separated from the third matching part; The first unlocking mechanism includes a first driving part that can be movably arranged on the first connecting part, and the movement of the first driving part simultaneously drives the first locking part to move away from the first matching part , the second locking member moves away from the second matching portion, and the third locking member moves away from the third matching portion. 2. The stroller for children according to claim 1, characterized in that the stroller further comprises a second unlocking mechanism for only unlocking the first locking mechanism. 3. The baby stroller according to claim 1, wherein the first matching portion is a first locking groove, and when the first locking mechanism is in a locked state, the first locking member is partially positioned at the In the first locking groove, when the first locking mechanism is in the unlocked state, the first locking piece is separated from the first locking groove; the second locking piece is movable between the upper frame and the On the part of the two parts of the lower surrounding frame that is far away from the first connecting part, the second matching part is a second locking groove, and the third locking part is movably arranged on the upper surrounding frame and the lower connecting part. On the part of the two parts of the surrounding frame that is close to the first connecting part, the third matching part is a third locking groove. When the second locking mechanism is locked, the second locking part is partially located on the In the second locking groove, the third locking member is partially located in the third locking groove, and when the second locking mechanism is unlocked, the second locking member is separated from the second locking groove, and the first locking member is separated from the second locking groove. The three locking pieces are separated from the third locking groove. 4. The children's stroller according to claim 3, characterized in that: the first locking piece is rotatably connected to the one part of the stroller frame through a second shaft; the second locking piece can is slidably arranged on the lower surround frame and sleeved on the first shaft to slide along the axial direction of the first shaft, the third locking member is slidably arranged on the upper surround frame, so The sliding direction of the third locking part is parallel to the sliding direction of the second locking part; the first driving part is slidably arranged on the first connecting part, and the sliding direction of the first driving part is parallel to the sliding direction of the The sliding directions of the second locking piece and the third locking piece are perpendicular to each other, and the first driving piece is respectively provided with a first slope, a second slope and a third slope, and the first locking piece is provided with a A fourth inclined surface that matches the first inclined surface, a fifth inclined surface that matches the second inclined surface is provided on the second locking member, and a fifth inclined surface that cooperates with the third inclined surface is provided on the third locking member. When unlocking, the first driving member slides, and the first locking member is separated from the first locking groove through the cooperation of the first inclined surface and the fourth inclined surface. The cooperation between the second inclined surface and the fifth inclined surface drives the second locking member to separate from the second locking groove, and the cooperation between the third inclined surface and the sixth inclined surface drives the third locking member to separate from the second locking groove. The third lock groove is separated; the first unlocking mechanism also includes a first pull belt connected to the first drive member, and the first drive member is driven to slide by lifting up or pulling down the first pull belt . 5. The children's stroller according to claim 1, wherein the stroller further comprises a second unlocking mechanism only for unlocking the first locking mechanism, the second unlocking mechanism includes a slidable The second driving part arranged on the cart frame, the second lifting belt connected with the second driving part, the second driving part is provided with a seventh slope, and the first locking part There is an eighth inclined surface matched with the seventh inclined surface. When the second lifting belt is pulled up to make the second driving member slide, it is driven by the cooperation between the seventh inclined surface and the eighth inclined surface. The movement of the first locking member unlocks the first locking mechanism. 6. The baby stroller according to claim 1, characterized in that: the baby stroller is further provided with a first locking mechanism for driving the second locking member and the third locking member to switch from the unlocked state to the locked state. A reset element, the first reset element includes a first spring and a second spring, and the two ends of the first spring are respectively connected to one of the two parts of the upper frame and the lower frame and the The second locking part is connected, and the two ends of the second spring are respectively connected with one of the two parts of the seat frame and the first connecting part and the third locking part. 7. The stroller for children according to claim 1, wherein the stroller further comprises an adjustment mechanism for adjusting the angle between the seat frame and the horizontal plane, and the adjustment mechanism includes a The adjustment handle on the bag frame and a drag cable connected with the adjustment handle at one end, and the other end of the drag cable is connected with the third locking member. 8. The children's stroller according to claim 1, wherein the seat frame can be installed on the stroller frame forward or reverse, when the seat frame is installed forward or reverse When on the cart frame, a fixing device for fixing the seat frame and the cart frame is provided between the seat frame and the cart frame, and the fixing device includes The fourth locking piece is rotatably connected with the first connecting piece through the third shaft, and the cart frame is provided with a fourth locking groove. When the fixing device is locked, the fourth locking piece is partially located In the fourth locking slot, when the fixing device is unlocked, the fourth locking member is separated from the fourth locking slot. 9. The children's stroller according to claim 8, characterized in that: the stroller further comprises a button capable of unlocking the fixing device, the button is slidably provided on the first connecting member, and when pressed The button, the button resists the fourth locking piece to drive the fourth locking piece to rotate around the third axis, so that the fourth locking piece is separated from the fourth lock groove; the fourth locking piece A second reset element for driving the fourth locking member to switch from an unlocked state to a locked state is further provided between the locking member and the first connecting member. 10. The children's stroller according to claim 1, wherein the stroller frame includes side brackets located on the left and right sides of the stroller frame, and the left and right sides and both sides of the seat frame are The side brackets on each side are rotatably connected, and the side brackets on each side include: a front bracket, the front wheel assembly is arranged at the front of the front bracket; a rear bracket, the rear wheel assembly is located at the lower part of the rear bracket; A push rod, the lower end of the push rod, the rear end of the front bracket, and the upper end of the rear bracket are connected with the same axis for rotation; a sliding block, the sliding block is slidably arranged on the rear support along the length direction of the rear support; a first connecting rod, the two ends of the first connecting rod are respectively rotatably connected to the lower part of the push rod and the sliding block; The second connecting rod, the two ends of the second connecting rod are respectively rotatably connected with the rear part of the front bracket and the sliding block. 11. The stroller for children according to claim 10, wherein the first locking mechanism comprises a first locking member, and the first locking member is rotatably connected to the sliding block. 12. The children's stroller according to claim 1, wherein the stroller frame includes side brackets located on the left and right sides of the stroller frame, and the side brackets on each side include a rotating joint The front bracket, the rear bracket and the push rod connected with the same axis rotation, the rotation joint includes three parts, the rear end of the front bracket, the upper end of the rear bracket, and the lower end of the push rod The sleeve neck that protrudes toward the inside or outside of the cart on one part, the rear end of the front bracket, the upper end of the rear bracket, and the lower end of the push rod are other three parts The two components are respectively provided with a first collar and a second collar, and the first collar and the second collar are sequentially sleeved on the outer periphery of the collar along the axial extension direction of the collar and Can be rotated around the collar.