CN220076465U - Child cart - Google Patents

Abstract

The utility model discloses a baby stroller, which comprises a stroller frame with an unfolding state and a folding state, wherein the stroller frame comprises a side bracket and a cross bar assembly, the side bracket comprises a front bracket, a rear bracket assembly, a push rod assembly, a side handrail, a lower connecting rod, a front connecting rod and a rear pull rod, the rear bracket assembly comprises a rear upper rod and a rear lower rod which are connected in a sliding manner, the side handrail is rotationally connected with the push rod assembly, two of the side handrail, the front bracket and the rear upper rod are rotationally connected with one of the side handrail, the front bracket and the rear upper rod, or the three are coaxially rotationally connected with one another, the lower connecting rod is rotationally connected with the push rod assembly and the rear upper rod respectively, two ends of the front connecting rod are rotationally connected with the front bracket and the lower connecting rod respectively, and the cross bar assembly comprises a rear cross bar assembly arranged between the rear lower rods on two sides. The child stroller has good rigidity in an unfolding state, and is compact in structure, small in size and convenient to carry and store after being folded.

Description

A children's stroller

Technical field

The utility model relates to the technical field of children's products, in particular to a children's stroller.

Background technique

As a common children's product, strollers play a great role when parents travel with their children. When the stroller is not in use, it needs to be folded and stored. Some children's strollers in the prior art have insufficient structural rigidity when unfolded and used, and the structural volume is still large after folding.

Utility model content

The purpose of this utility model is to address the deficiencies in the prior art and provide a children's stroller with good structural rigidity when deployed and small structural volume after folding.

In order to achieve the above purpose, the technical solution adopted by this utility model is:

A children's stroller includes a stroller frame with an unfolded state and a folded state. The stroller frame includes side brackets respectively provided on the left and right sides and a crossbar connected between the side brackets on the left and right sides. Brace assemblies, the side braces on each side include:

A front bracket, a front wheel assembly is arranged on the lower part of the front bracket;

The rear bracket assembly includes a rear upper rod and a rear lower rod slidably disposed on the rear upper rod along the length extension direction of the rear upper rod, and a rear wheel assembly is disposed at the lower part of the rear lower rod;

pushrod assembly;

Side armrests, the upper part of the side armrests is rotationally connected to the lower part of the push rod assembly, and two of the lower part of the side armrests, the upper part of the front bracket and the upper part of the rear upper rod are rotationally connected, The third party is rotatably connected to any one of the aforementioned two, or the above three are coaxially rotatably connected;

A lower connecting rod, the upper part of the lower connecting rod is rotationally connected to the lower part of the push rod assembly, and the lower connecting rod is rotationally connected to the rear upper rod;

Front link, one end of the front link is rotatably connected to the front bracket, and the other end of the front link is rotatably connected to the lower link;

A rear tie rod, one end of the rear tie rod is rotatably connected to the lower part of the lower link, and the other end of the rear tie rod is rotatably connected to the rear lower rod;

The cross brace assembly includes a rear cross brace assembly disposed between the rear lower rods on the left and right sides. The rear cross brace assembly includes two rear cross brace rods that are rotationally connected at one end. The two rear cross brace rods are The other ends are respectively rotatably connected with the rear lower rod on the corresponding side.

Preferably, the cross brace assembly further includes a front cross brace assembly disposed between the front brackets on the left and right sides. The front cross brace assembly includes two front cross brace rods with one end portion rotationally connected. The other end of the front cross brace is rotatably connected to the front bracket on the corresponding side.

Further, the stroller frame further includes a first linkage mechanism that drives the two front cross braces to rotate and fold relative to each other when the side brackets are folded. The first linkage mechanism includes a first connecting rod, so One end of the first connecting rod is rotatably connected to the front cross brace through a first shaft extending in the front and rear direction, and the other end of the first connecting rod is connected to the rear upper rod through a third The two axes are rotatably connected, and the second axis extends in the left and right directions.

Furthermore, when the child stroller is in an unfolded state, on the rear upper rod, the rotational connection between the first link and the rear upper rod is located between the lower link and the rear upper rod. The front of the rod's pivot joint.

Furthermore, the front cross brace includes a main brace extending in the left and right direction and a connecting rod with one end fixed on the main brace. One end of the two main braces is rotationally connected, and the two main braces are connected in a rotational manner. The other end of the main support rod is rotatably connected to the front bracket on the corresponding side, and one end of the first connecting rod is rotatably connected to the other end of the connecting rod.

Preferably, the stroller frame further includes a second linkage mechanism that drives the two rear cross braces to rotate and fold relative to each other when the side brackets are folded, and the second linkage mechanism includes a second connecting rod, so One end of the second connecting rod is rotatably connected to the rear cross brace through a third axis extending in the front and rear direction, and the other end of the second connecting rod is connected to the lower link through a third axis. Four-axis rotational connection, the fourth axis extends in the left and right directions.

Further, when the child stroller is in the unfolded state, on the lower link, the rotation connection between the lower link and the push rod assembly, and the connection between the lower link and the rear upper rod The rotary connection, the rotary connection between the lower link and the front link, the rotary connection between the lower link and the second link, the rotary connection between the lower link and the rear tie rod Set in order from top to bottom.

Preferably, when the child stroller is in the unfolded state, the axis of the rotating shaft between the front link and the front bracket, and the axis of the rotating shaft between the front link and the lower link are The center line and the axis center line of the rotating shaft that is rotatably connected to the lower connecting rod and the rear upper rod are located in the same plane.

Preferably, the side bracket further includes a seat post and a sliding sleeve that is sleeved on the seat post and can be slidably arranged relative to the seat post, and the rear end of the seat post rotates with the upper part of the lower link. Connected, the sliding sleeve is rotationally connected to the side armrest.

Further, the cross brace assembly also includes a cross brace assembly, and the cross brace assembly includes two brace rods that cross and rotate at the intersection. One end of each brace rod is connected to the seat on one side. The rear end of the rod is rotatably connected, and the other end of each support rod is rotatably connected with the lower link on the other side.

Preferably, the push rod assembly includes a lower push rod, a middle push rod slidably disposed on the lower push rod along the length extension direction of the lower push rod, and a middle push rod capable of sliding along the length extension direction of the middle push rod. an upper push rod slidably provided on the middle push rod, a first locking mechanism for locking the relative positions of the lower push rod and the middle push rod, and a first locking mechanism for locking the middle push rod and the middle push rod. A second locking mechanism for locking the relative position of the upper push rod, a first unlocking mechanism and a first unlocking piece for driving the first locking mechanism to unlock. The first unlocking piece is rotatably disposed on the upper push rod. On, the first unlocking piece cooperates with the first unlocking mechanism, and when the first unlocking mechanism is operated, the first unlocking piece is in the first position and the second locking mechanism is unlocked; When the first unlocking mechanism is released, the first unlocking member is in the second position; when the first unlocking member is in the second position, the upper push rod slides downward and is close to the middle push rod. When the first unlocking member is in the first position, the first unlocking member cannot drive the first locking mechanism to unlock; when the upper push rod slides downward and is close to the middle push rod, the first unlocking member is in the first position. The first unlocking piece can drive the first locking mechanism to unlock.

Further, the first locking mechanism includes a first locking piece slidably provided on one of the middle push rod and the lower push rod and a first lock groove provided on the other. , the first locking piece can be inserted into or disengaged from the first lock slot; when the first unlocking piece is in the second position, the upper push rod slides downward and When the middle push rods are close together, the first unlocking part can resist and cooperate with the first locking part but cannot drive the first locking part to slide; when the first unlocking part is in the first position When the upper push rod slides downward and comes close to the middle push rod, the first unlocking piece can abut and cooperate with the first locking piece to drive the first locking piece to slide.

Furthermore, the first unlocking part is provided with an unlocking part, and the first locking part is provided with a first fitting part and a second fitting part respectively; when the first unlocking part is in the first position, The position of the unlocking part corresponds to the position of the first fitting part. When the upper push rod slides downward, the unlocking part and the first fitting part are in contact with each other; when the first unlocking member When in the second position, the position of the unlocking part corresponds to the position of the second fitting part. When the upper push rod slides downward, the unlocking part and the second fitting part are engaged with each other.

Furthermore, the unlocking part has a first inclined surface, the first fitting part has a second inclined surface that matches the first inclined surface, and when the first unlocking piece is in the first position, the upper part When the push rod slides downward and comes close to the middle push rod, the first inclined surface and the second inclined surface can abut and cooperate.

Further, the children's stroller further includes a third locking mechanism for locking the relative positions of the push rod assembly and the lower link or the side armrest and is movably provided on the lower push rod for The second unlocking mechanism that drives the third locking mechanism to unlock, when the middle push rod slides downward and comes close to the lower push rod, the middle push rod can cooperate with the second unlocking mechanism to The second unlocking mechanism is driven to operate to unlock the third locking mechanism.

Furthermore, the first locking grooves are respectively provided at the upper and lower ends of the lower push rod. When the child stroller is in the unfolded state, the first locking piece is inserted into the third upper part. In a lock slot, when the middle push rod slides downward and comes close to the lower push rod, the first locking piece can be inserted into the first lock slot located at the lower part, so that the middle push rod The rod cannot slide downward to cooperate with the second unlocking mechanism, so that the third locking mechanism cannot unlock.

Further, the first unlocking mechanism includes a second unlocking piece slidably disposed in the upper push rod, and the second unlocking piece resists the first unlocking piece and the second locking mechanism respectively. In cooperation, when the second unlocking piece is driven to slide relative to the upper push rod to unlock the second locking mechanism, the first unlocking piece rotates relative to the upper push rod from the second position to the first position.

Further, the stroller further includes a first elastic member for driving the first unlocking member to rotate from the first position to the second position.

Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art: when the children's stroller of the present utility model is unfolded and used, the side brackets on the left and right sides are unfolded, and the rear cross brace components are unfolded and supported on the left and right sides. Between the rear lower rods on the side, this makes the stroller have better rigidity when it is unfolded, making the structure of the stroller better, and improving the safety of the stroller. Moreover, after folding, the stroller has a compact structure and small size, making it easy to carry and store.

Description of drawings

Figure 1 is one of the three-dimensional schematic diagrams of the children's stroller in the unfolded state according to this embodiment;

Figure 2 is the second schematic three-dimensional view of the children's stroller in the unfolded state according to this embodiment;

Figure 3 is the third schematic three-dimensional view of the children's stroller in the unfolded state according to this embodiment;

Figure 4 is the fourth schematic three-dimensional view of the children's stroller in the unfolded state according to this embodiment;

Figure 5 is a schematic side view of the children's stroller in the unfolded state of this embodiment;

Figure 6 is a schematic cross-sectional view of the push rod assembly of the children's stroller in the unfolded state according to this embodiment;

Figure 7 is a rotationally enlarged schematic diagram of Figure 6 with part of the structure removed;

Figure 8 is a schematic cross-sectional view of the push rod assembly of the stroller of this embodiment after the first unlocking mechanism is operated to unlock the second locking mechanism in the unfolded state;

Figure 9 is a rotationally enlarged schematic diagram of Figure 8 with part of the structure removed;

Figure 10 is a schematic cross-sectional view of the push rod assembly of this embodiment when the upper push rod slides downward and approaches the middle push rod (the first locking mechanism is in a locked state);

Figure 11 is a partially enlarged schematic diagram of position A in Figure 10;

Figure 12 is a schematic cross-sectional view of the push rod assembly of this embodiment when the upper push rod slides downward and approaches the middle push rod (the first locking mechanism is in an unlocked state);

Figure 13 is a partially enlarged schematic diagram of position A in Figure 12;

Figure 14 is a schematic cross-sectional view of the push rod assembly of this embodiment when the middle push rod slides downward and comes close to the lower push rod (the first locking mechanism is in a locked state);

Figure 15 is a partially enlarged schematic diagram of position A in Figure 14;

Figure 16 is a schematic cross-sectional view of the push rod assembly of this embodiment when the middle push rod slides downward and comes close to the lower push rod (the first locking mechanism is in an unlocked state);

Figure 17 is a partially enlarged schematic diagram of position A in Figure 16;

Figure 18 is a schematic side view of the stroller of this embodiment during the folding process;

Figure 19 is a three-dimensional schematic diagram of the children's stroller in the folded state of this embodiment;

Figure 20 is a schematic front view of the children's stroller in the folded state of this embodiment.

Among them: 11. Front bracket; 12. Rear bracket assembly; 121. Rear upper rod; 122. Rear lower rod; 13. Push rod assembly; 131. Upper push rod; 132. Middle push rod; 132a, second lock slot; 133. Lower push rod; 1331. First lock groove; 1332. Second unlocking piece; 1332a, third slope; 14. Side armrest; 15. Lower link; 16. Front link; 17. Rear pull rod; 18. Seat post; 19. Sliding sleeve; 21. Front cross brace; 211. Main brace; 212. Connecting rod; 22. Rear cross brace; 23. Upper cross brace; 24. Support rod; 31. First link Rod; 32, second connecting rod; 401, first axis; 402, second axis; 403, third axis; 404, fourth axis; 405, fifth axis; 406, sixth axis; 407, seventh axis ; 408. Eighth axis; 409. Ninth axis; 410. Tenth axis; 411. Eleventh axis; 412. Twelfth axis; 413. Thirteenth axis; 5. First locking member; 51. No. A matching part; 511, second slope; 52, second matching part; 61, second locking member; 611, main body part; 611a, fourth slope; 612, locking pin; 62, third elastic member; 7. Three locking parts; 81. Unlocking button; 82. Second unlocking part; 821. Fifth inclined plane; 83. Traction rope; 91. First unlocking piece; 911. Unlocking part; 911a, first inclined plane; 92. First elasticity Parts; 10. Second unlocking mechanism.

Detailed ways

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

The children's stroller of the present invention has an unfolded state and a folded state. As shown in Figures 1 to 5, the children's stroller includes a stroller frame, a front wheel assembly arranged at the bottom front of the stroller frame, and a front wheel assembly arranged at the bottom of the stroller frame. The rear wheel assembly at the bottom of the vehicle frame.

The stroller frame includes side brackets respectively arranged on the left and right sides and a cross brace assembly connected between the side brackets on the left and right sides.

The side supports on each side include a front support 11, a rear support assembly 12, a push rod assembly 13, a side armrest 14, a lower link 15, a front link 16 and a rear tie rod 17.

The front wheel assemblies are respectively provided at the lower portion of the front bracket 11 on each side.

The rear bracket assembly 12 on each side includes a rear upper rod 121 and a rear lower rod 122. The rear lower rod 122 can be slidably disposed on the rear upper rod 121 along the length extension direction of the rear upper rod 121. The rear wheel assemblies are respectively disposed on each side. The lower part of the rear lower rod 122 on the side.

The lower part of the push rod assembly 13 and the upper part of the side armrest 14 are rotationally connected through a fifth shaft 405 .

Two of the lower part of the side armrest 14, the upper part of the front bracket 11 and the upper part of the rear upper rod 121 are rotationally connected, and the third one is rotationally connected with any one of the above two, or the above three are coaxially rotated connect. In this embodiment, the lower part of the side armrest 14 and the upper part of the rear upper rod 121 are rotationally connected through a sixth shaft 406 , and the upper part of the front bracket 11 and the upper part of the rear upper rod 121 are rotationally connected through a seventh axis 407 . When the stroller is in the unfolded state, the seventh axis 407 is located below the sixth axis 406 .

One end of the lower link 15 is rotatably connected to the lower part of the push rod assembly 13 through an eighth shaft 408 , and the lower link 15 is rotatably connected to the rear upper rod 121 through a ninth shaft 409 .

One end of the front link 16 is rotatably connected to the front bracket 11 through a tenth shaft 410 , and the other end of the front link 16 is rotatably connected to the lower link 15 through an eleventh shaft 411 .

One end of the rear tie rod 17 is rotatably connected to the lower part of the lower link 15 through a twelfth shaft 412 , and the other end of the rear tie rod 17 is rotatably connected to the rear lower rod 122 through a thirteenth shaft 413 .

The side brackets on each side may also include a seat post 18 and a sliding sleeve 19. The rear end of the seat post 18 is rotationally connected to the upper part of the lower link 15. The sliding sleeve 19 is sleeved on the seat post 18 and can be relative to the seat post 18. Slidingly arranged, the sliding sleeve 19 is rotatably connected to the side armrest 14 .

In this way, in the side brackets on each side, a four-bar linkage is formed between the rear upper rod 121, the side armrest 14, the push rod assembly 13 and the lower link 15. A four-bar linkage is formed between the rod 15 and the front connecting rod 16, and a slider crank mechanism is formed between the rear upper rod 121, the rear lower rod 122, the rear pull rod 17 and the lower connecting rod 15.

When the stroller is in the unfolded state, the axis of the ninth axis 409, the axis of the tenth axis 410, and the axis of the eleventh axis 411 are located in the same plane. This makes the four-bar linkage formed by the front bracket 11, the rear upper rod 121, the lower link 15 and the front link 16, the axis of the seventh axis 407, the axis of the ninth axis 409, the axis of the tenth axis 410 The center of the stroller is connected with the axis of the eleventh axis 411 to form a triangular structure, so that the structure of the stroller has better structural rigidity in the unfolded state.

The cross brace assembly includes a front cross brace assembly, a rear cross brace assembly and an upper cross brace assembly. The front cross brace assembly is arranged between the front brackets 11 on the left and right sides, and the rear cross brace assembly is arranged between the rear lower rods 122 on the left and right sides. The upper cross brace assembly is arranged between the push rod assemblies 13 on the left and right sides.

The front cross brace assembly includes two front cross brace rods 21, one end of the two front cross brace rods 21 is rotationally connected, and the other end of the two front cross brace rods 21 is rotationally connected to the front bracket 11 on the corresponding side.

The rear cross brace assembly includes two rear cross brace rods 22, one end of the two rear cross brace rods 22 is rotationally connected, and the other end of the two rear cross brace rods 22 is rotationally connected to the rear lower rod 122 on the corresponding side.

The upper cross brace assembly includes two upper cross brace rods 23, one end of the two upper cross brace rods 23 is rotationally connected, and the other end of the two upper cross brace rods 23 is rotationally connected to the upper part of the push rod assembly 13 on the corresponding side.

The cross brace assembly may also include a cross brace assembly disposed between the side brackets on the left and right sides. The cross brace assembly includes two brace rods 24 that cross and rotate at the intersection. One end of each brace rod 24 is connected to a cross brace assembly. The rear end of the seat post 18 on one side is rotatably connected, and the other end of each stay rod 24 is rotatably connected with the lower link 15 on the other side.

By arranging the cross brace assembly in this way, the structural rigidity of the child stroller when used in the unfolded state can be improved, thereby improving the safety of the child stroller when used.

The stroller frame also includes a first linkage mechanism and a second linkage mechanism. The first linkage mechanism and the second linkage mechanism are respectively provided on the left and right sides. When the side brackets on each side are folded during the folding process of the child stroller, they can be The first linkage mechanism on both sides drives the two front cross braces 21 to rotate and fold relative to each other, and the second linkage mechanism on both sides drives the two rear cross braces 22 to rotate and fold relative to each other, so that the side brackets on the left and right sides come closer to each other. , the stroller can be folded vertically and horizontally at the same time, making the folding of the stroller convenient.

The first linkage mechanism includes a first connecting rod 31. One end of the first connecting rod 31 is rotationally connected to the front cross brace 21 through a first shaft 401. The other end of the first connecting rod 31 is connected to the rear upper rod 121 through a second The shaft 402 is rotatably connected, the first shaft 401 extends in the front-to-back direction, and the second shaft 402 extends in the left-to-right direction. When the stroller is in the unfolded state, the second axis 402 is located in front of the ninth axis 409 on the rear upper rod 121 .

In this embodiment, the front cross brace 21 includes a main brace 211 extending in the left-right direction and a connecting rod 212 with one end fixed on the main brace 211. One end of the two main braces 211 is rotationally connected, and the two main braces 211 are connected in a rotational manner. The other end of the main support rod 211 is rotatably connected to the front bracket 11 on the corresponding side. One end of the first connecting rod 31 and the other end of the connecting rod 212 are rotatably connected through the first shaft 401 .

The second linkage mechanism includes a second link 32. One end of the second link 32 is rotationally connected to the rear cross brace 22 through a third shaft 403. The other end of the second link 32 is connected to the lower link 15 through a fourth Shaft 404 is rotationally connected. The third axis 403 extends in the front-to-back direction, and the fourth axis 404 extends in the left-to-right direction. When the stroller is in the unfolded state, on the lower link 15, the eighth axis 408, the ninth axis 409, the eleventh axis 411, the fourth axis 404, and the twelfth axis 412 are arranged sequentially from top to bottom.

As shown in Figures 1, 2, 5, 6 and 8, the push rod assembly includes an upper push rod 131, a middle push rod 132 and a lower push rod 133. The middle push rod 132 is slidably disposed on the lower push rod 133 along the length extension direction of the lower push rod 133 , and the upper push rod 131 is slidably disposed on the middle push rod 132 along the length extension direction of the middle push rod 132 . The other end of the support rod 23 is rotatably connected to the upper part of the upper push rod 131 on the corresponding side, and the side armrest 14 and the lower link 15 are respectively rotatably connected to the lower part of the lower push rod 133. In this embodiment, the upper push rod 131 , the middle push rod 132 and the lower push rod 133 all have lumens extending along their own lengths. The middle push rod 132 is slidably disposed in the lumen of the lower push rod 133 . 131 can be slidably disposed in the lumen of the middle push rod 132.

When the child stroller is in the unfolded state, the upper push rod 131 extends upward mostly to the outside of the lumen of the middle push rod 132, and the middle push rod 132 mostly extends upward to the outside of the lumen of the lower push rod 133, as in Shown in Figure 1, Figure 2 and Figure 5. When the stroller is in the folded state, most of the upper push rod 131 is retracted into the lumen of the middle push rod 132, and most of the middle push rod 132 is retracted into the lumen of the lower push rod 133, as shown in Figure 19 and Figure 20 shown.

The stroller also includes a first locking mechanism for locking the relative positions of the middle push rod 132 and the lower push rod 133 . When the first locking mechanism is in the locked state, the middle push rod 132 and the lower push rod 133 cannot slide relative to each other. When the first locking mechanism is in the unlocked state, the middle push rod 132 can slide relative to the lower push rod 133 .

The first locking mechanism includes a first locking piece 5 slidably provided on one of the middle push rod 132 and the lower push rod 133 and a first lock groove 1331 provided on the other. When the first locking mechanism is in the locked state, the first locking piece 5 is inserted into the first lock groove 1331, so that the middle push rod 132 and the lower push rod 133 cannot slide relative to each other, as shown in Figures 10, 11, and 14 and Figure 15. When the first locking mechanism is in the unlocked state, the first locking piece 5 is disengaged from the first lock groove 1331, so that the middle push rod 132 can slide relative to the lower push rod 133, as shown in Figures 12, 13, 16 and 17 shown. In this embodiment, the first locking part 5 is slidably disposed in the lumen of the middle push rod 132, and the first locking groove 1331 is disposed on the lower push rod 133. By sliding the first locking part 5 relative to the middle push rod 12, The first locking piece 5 can be inserted into the first lock groove 1331 or disengaged from the first lock groove 1331 .

The push rod assembly also includes a second elastic member (not shown in the figure), and the elastic force of the second elastic member is used to drive the first locking member 5 to slide in the direction of being inserted into the first lock groove 1331 .

The stroller further includes a second locking mechanism for locking the relative positions of the upper push rod 131 and the middle push rod 132 . When the second locking mechanism is in the locked state, the upper push rod 131 and the middle push rod 132 cannot slide relative to each other. When the first locking mechanism is in the unlocked state, the upper push rod 131 can slide relative to the middle push rod 132 .

The second locking mechanism includes a second locking piece 61 movably provided on the upper push rod 131 and a second lock groove 132a provided on the middle push rod 132 . The second locking member 61 includes a body part 611 and a locking pin 612. The body part 611 is elastic and the locking pin 612 is provided at one end of the body part 611. When the second locking mechanism is in the locked state, the locking pin 612 is inserted into the second locking groove 132a so that the upper push rod 131 and the middle push rod 132 cannot slide relative to each other, as shown in FIGS. 6 and 7 . When the second locking mechanism is in the unlocked state, the locking pin 612 is disengaged from the second locking groove 132a, so that the upper push rod 131 can slide relative to the middle push rod 132, as shown in FIGS. 8 and 9 . By swinging the main body part 611 relative to the upper push rod 131, the locking pin 612 can be inserted into the second locking groove 132a or disengaged from the second locking groove 132a.

The stroller further includes a third elastic member 62, and the elastic force of the third elastic member 62 is used to drive the second locking member 61 to swing in the direction of inserting the locking pin 612 into the second locking groove 132a.

The stroller also includes a third locking mechanism for locking the relative position of the lower push rod 133 and the side armrest 14 or the lower link 15. When the third locking mechanism is in the locked state, the position of the entire stroller frame is locked. . The third locking mechanism may adopt a structure in the prior art. For example, the third locking mechanism includes a third locking member 7 slidably disposed between the lower push rod 133 and the side armrest 14 or the lower link 15 . The third locking member 7 It has locking teeth, as shown in Figure 6, Figure 8, Figure 10, Figure 12, Figure 14 and Figure 16. The side armrests 14 or the lower link 15 and the lower push rod 133 are provided with tooth slots capable of engaging with the locking teeth. When the third locking mechanism is in the locked state, the locking teeth mesh with the tooth grooves on the side armrest 14 or the lower link 15 and the lower push rod 133 respectively. When the third locking mechanism is in the unlocked state, the locking teeth are engaged with the tooth grooves on one of the side armrests 14 or the lower link 15 and the lower push rod 133 and are disengaged from the tooth grooves of the other one. .

The stroller also includes a first unlocking mechanism. When the second locking mechanism operates the first unlocking mechanism in the locked state, the second locking mechanism can be driven to unlock, so that the upper push rod 131 can slide downward to contact the middle push rod 132. Get closer.

Specifically, as shown in FIGS. 6 to 9 , the first unlocking mechanism includes an unlocking button 81 , a second unlocking piece 82 and a pulling cable 83 . The unlocking button 81 and the second unlocking member 82 are both slidably disposed on the upper push rod 131. The second unlocking member 82 is received in the lumen of the upper push rod 131, and the unlocking button 81 partially extends to the outside of the upper push rod 131. , so that it can be manually operated when unlocking. One end of the pulling rope 83 is directly or indirectly arranged on the unlocking button 81 , and the other end of the pulling rope 83 is arranged on the second unlocking piece 82 . The second unlocking member 82 is in cooperation with the second locking member 61. In this embodiment, the body portion 611 of the second locking member 61 is provided with a fourth inclined surface 611a, and the second unlocking member 82 is provided with a fourth inclined surface 611a. The corresponding fifth inclined surface 821, the fourth inclined surface 611a and the fifth inclined surface 821 are all obliquely intersected with the sliding direction of the second unlocking member 82, and the fourth inclined surface 611a and the fifth inclined surface 821 abut and cooperate.

When the second locking mechanism operates the unlocking button 81 in the locked state, the second unlocking part 82 is pulled upward by the pulling rope 83, and the fourth inclined surface 611a and the fifth inclined surface 821 are in contact with each other, so that the second locking part 61 is The body part 611 swings relative to the upper push rod 131, so that the locking pin 612 is disengaged from the second lock groove 132a, the second locking mechanism is unlocked, and the upper push rod 131 can slide downward relative to the middle push rod 132 and connect with the middle push rod 132. Get closer.

The children's stroller also includes a first unlocking part 91 , which is provided at the lower part of the upper push rod 131 . When the stroller is in the unfolded state, the first unlocking part 91 is away from the first locking part 5, as shown in Figures 6 and 8. When the upper push rod 131 slides downward relative to the middle push rod 132 and approaches the middle push rod 132, the first unlocking member 91 can cooperate with the first locking member 5, so that when the upper push rod 131 slides downward, the first unlocking member 91 can be A locking piece 5 slides in the direction of disengaging from the first lock groove 1331, thereby unlocking the first locking mechanism. In this way, the unlocking operation of the first locking mechanism can be facilitated.

The first unlocking piece 91 is rotatably disposed at the lower portion of the upper push rod 131 . The first unlocking piece 91 rotates relative to the upper push rod 131 to have a first position and a second position.

The lower ends of the first unlocking member 91 and the second unlocking member 82 are in contact with each other. When the unlock button 81 is operated to unlock the second locking mechanism, the first unlocking part 91 can be driven to rotate to the first position relative to the upper push rod 131 through the cooperation of the first unlocking part 91 and the second unlocking part 82, as shown in Figure 8. As shown in Figure 9, Figure 12, Figure 13, Figure 16 and Figure 17.

When the unlock button 81 is released, the first unlocking member 91 reversely rotates under the elastic force of the first elastic member 92, thereby rotating from the first position to the second position, as shown in Figures 6, 7, and 10. Shown in Figure 11, Figure 14 and Figure 15. In this embodiment, the first elastic member 92 is a torsion spring, one end of the torsion spring is provided on the first unlocking member 91 , and the other end of the torsion spring is provided on the upper push rod 131 .

When the first unlocking member 91 is in the first position and the upper push rod 131 slides downward, the first unlocking member 91 can cooperate with the first locking member 5 so that the first locking member 5 moves toward the first lock groove 1331 Slide in the direction of disengagement, thereby unlocking the first locking mechanism.

When the first unlocking part 91 is in the second position and the upper push rod 131 slides downward, the first locking part 5 cannot slide relative to the middle push rod 132, so that the first locking mechanism cannot unlock and maintains the locked state. In this way, when the second locking mechanism is unlocked due to misoperation of the unlock button 81 during the use of the child stroller, the upper push rod 131 can slide downward relative to the middle push rod 132 and get closer to the middle push rod 132. When the upper push rod 131 moves toward During the downward sliding process, when the unlock button 81 is released, the first unlocking member 91 is in the second position under the elastic force of the first elastic member 92. When the upper push rod 131 slides downward relative to the middle push rod 132, After a distance, the first unlocking part 91 and the first locking part 5 are in contact, so that the upper push rod 131 cannot continue to slide downward, and the first locking part 5 cannot slide relative to the middle push rod 132, so that the first locking mechanism maintains the locked state. In this way, the middle push rod 132 cannot slide downward, thereby preventing the awning from sliding down and hitting the children riding in the stroller.

Specifically, the first unlocking part 91 is provided with an unlocking part 911, and the first locking part 5 is provided with a first fitting part 51 and a second fitting part 52 respectively. The distance between the first fitting part 51 and the unlocking part 911 is greater than the second fitting part 51. The distance between the fitting part 52 and the unlocking part 911. When the first unlocking part 91 is in the first position, the position of the unlocking part 911 corresponds to the position of the first matching part 51, as shown in Figures 12, 13, 16 and 17; when the first unlocking part 91 When in the second position, the position of the unlocking part 911 corresponds to the position of the second fitting part 52, as shown in Figures 10, 11, 14 and 15.

In this embodiment, the second matching part 52 is the upper end surface of the first locking part 5. When the upper push rod 131 slides downward to make the unlocking part 911 abut the upper end surface of the first locking part 5, as shown in Figure 10, Figure 11. As shown in Figures 14 and 15, due to the obstruction of the first locking member 5, the upper push rod 131 cannot continue to slide downward, and the first locking member 5 cannot slide either.

In this embodiment, the first fitting portion 51 is a groove that is concave downward from the upper end surface of the first locking member 5 . The unlocking part 911 has a first inclined surface 911a, and the first matching part 51, that is, one side of the groove is a second inclined surface 511 matching the first inclined surface 911a. When the upper push rod 131 slides downward to allow the unlocking portion 911 to enter the groove, the first inclined surface 911a and the second inclined surface 511 abut and cooperate, as shown in Figures 12, 13, 16 and 17. In this way, the upper push rod 131 can continue to slide downward and come close to the middle push rod 132, and the first locking member 5 can slide in the direction of disengagement from the first lock groove 1331 until the upper push rod 131 slides downward and is in place. At the same time, the first locking mechanism is unlocked.

That is, when the stroller frame is folded and the first locking mechanism needs to be unlocked, the unlocking button 81 needs to be operated while the upper push rod 131 slides downward, thereby driving the first unlocking part 91 to move to the first position through the second unlocking part 82 . Location.

As shown in FIGS. 14 to 17 , the stroller further includes a second unlocking mechanism 10 , and the second unlocking mechanism 10 is used to drive the third locking mechanism to unlock. The second unlocking mechanism 10 is movably arranged in the lumen of the lower push rod 133. When the middle push rod 132 slides downward and comes close to the lower push rod 133, the lower part of the middle push rod 132 can resist the second unlocking mechanism 10, thereby allowing the second unlocking mechanism 10 to move downward. The second unlocking mechanism 10 operates to unlock the third locking mechanism, which makes the unlocking operation of the third locking mechanism convenient and facilitates the folding of the stroller. The method of driving the third locking mechanism to unlock through the second unlocking mechanism 10 may adopt a structure in the prior art.

The first locking grooves 1331 are respectively provided at the upper and lower ends of the lower push rod 133. When the stroller is in the unfolded state, the first locking member 5 is inserted into the first locking groove 1331 located at the upper part of the lower push rod 133, so that Put the first locking mechanism in the locked state. When the unlocking button 81 is released while the middle push rod 132 slides downward and comes close to the lower push rod 133, the first locking member 5 can also be inserted into the first lock groove 1331 located at the lower part of the lower push rod 133. Thus, the first locking mechanism can be locked again.

When the unlocking button 81 is released while the middle push rod 132 slides downward, the first unlocking member 91 is in the second position under the elastic force of the first elastic member 92 . At this time, when the push rod 132 slides downward until the position of the first locking member 5 corresponds to the first lock groove 1331 at the lower part of the lower push rod 133, the first locking member 5 is automatically inserted under the elastic force of the second elastic member. In the first lock groove 1331, the positions of the middle push rod 132 and the lower push rod 133 are locked, and the middle push rod 132 cannot continue to slide downward, as shown in Figures 14 and 15. At this time, there is a distance between the lower part of the middle push rod 132 and the second unlocking mechanism 10, and the second unlocking mechanism 10 cannot be driven to operate, so that the third locking mechanism still maintains the locked state. This can prevent the third locking mechanism from being unlocked when the middle push rod 132 slides downward due to misoperation, thereby causing the stroller frame to fold, which can improve the safety performance of the child stroller.

If the third locking mechanism needs to be unlocked when folding the stroller, the unlocking button 81 is operated. After the first unlocking part 91 is driven by the second unlocking part 82 to move to the first position, the middle push rod 132 can continue to slide downward to unlock the stroller. The first inclined surface 911a enters the groove, and the first inclined surface 911a and the second inclined surface 511 are in contact with each other, so that the middle push rod 132 can continue to slide downward and come close to the lower push rod 133, and the first locking member 5 can be moved toward Slide in the direction of disengagement from the first lock groove 1331 until the middle push rod 132 slides downward into position and the first locking mechanism is unlocked, as shown in Figures 16 and 17 . When the middle push rod 132 continues to slide downward, the lower part of the middle push rod 132 can resist the second unlocking mechanism 10, causing the second unlocking mechanism 10 to operate, thereby unlocking the third locking mechanism.

As shown in FIGS. 14 to 17 , the stroller also includes a third unlocking member 1332 , which is fixedly provided on the lower push rod 133 and located at the first lock groove 1331 in the lower part of the lower push rod 133 . The third unlocking part 1332 is provided with a third inclined surface 1332a. When the first locking part 5 is inserted into the first lock groove 1331 located at the lower part of the lower push rod 133, the first locking part 5 and the third inclined surface 1332a abut and cooperate. . In this way, when the push rod 132 slides downward until the first locking member 5 is inserted into the first lock groove 1331 at the bottom of the lower push rod 133, and when the middle push rod 132 is pulled upward, due to the interaction between the first locking member 5 and the third slope 1332a, The first locking member 5 can be slid in the direction of disengagement from the first lock groove 1331 by the resistive fit, thereby unlocking the first locking mechanism, and the middle push rod 132 can be pulled upward to slide back to reset.

When the stroller is in the unfolded state, the first locking mechanism, the second locking mechanism and the third locking mechanism are all in the locked state, as shown in Figures 1 to 5.

When the stroller is folded from the unfolded state, the first unlocking mechanism is operated to unlock the second locking mechanism, causing the upper push rod 131 to slide downward and come closer to the middle push rod 132, and to unlock the first locking mechanism, causing the middle push rod to slide downward. 132 slides downward and comes close to the lower push rod 133 to unlock the third locking mechanism. The entire push rod assembly 13 is rotated downward and forward to be close to the side armrest 14, so that both the side armrest 14 and the lower link 15 are rotated downward, thereby pulling the front bracket 11 through the front link 16 to rotate backward and the rear bracket assembly. 12 are close together, and the rear lower rod 122 is pulled by the rear pull rod 17 to move upward relative to the rear upper rod 121 and to be close to the rear upper rod 121 . During this process, the front cross brace 21 is pulled by the first link 31 to rotate, and the rear cross brace 22 is pulled by the second link 32 to rotate, so that the side brackets on the left and right sides are brought together. The folding process is as shown in Figure 18 Show. Until all the parts that make up the stroller are closely together, and the final folding is as shown in Figure 19 and Figure 20. After folding, the stroller has a compact structure and small size, making it easy to carry and store.

The above embodiments are only for illustrating the technical concepts and characteristics of the present invention. Their purpose is to enable those familiar with the technology to understand the contents of the present invention and implement them accordingly. They cannot limit the scope of protection of the present invention. All equivalent changes or modifications based on the spirit and essence of the present utility model shall be included in the protection scope of the present utility model.

Claims (18)

1. A children's stroller, including a stroller frame with an unfolded state and a folded state. The stroller frame includes side brackets respectively provided on the left and right sides and connected between the side brackets on the left and right sides. The cross brace assembly is characterized in that: the side brackets on each side include: A front bracket, a front wheel assembly is arranged on the lower part of the front bracket; The rear bracket assembly includes a rear upper rod and a rear lower rod slidably disposed on the rear upper rod along the length extension direction of the rear upper rod, and a rear wheel assembly is disposed at the lower part of the rear lower rod; pushrod assembly; Side armrests, the upper part of the side armrests is rotationally connected to the lower part of the push rod assembly, and two of the lower part of the side armrests, the upper part of the front bracket and the upper part of the rear upper rod are rotationally connected, The third party is rotatably connected to any one of the aforementioned two, or the above three are coaxially rotatably connected; A lower connecting rod, the upper part of the lower connecting rod is rotationally connected to the lower part of the push rod assembly, and the lower connecting rod is rotationally connected to the rear upper rod; Front link, one end of the front link is rotatably connected to the front bracket, and the other end of the front link is rotatably connected to the lower link; A rear tie rod, one end of the rear tie rod is rotatably connected to the lower part of the lower link, and the other end of the rear tie rod is rotatably connected to the rear lower rod; The cross brace assembly includes a rear cross brace assembly disposed between the rear lower rods on the left and right sides. The rear cross brace assembly includes two rear cross brace rods that are rotationally connected at one end. The two rear cross brace rods are The other ends are respectively rotatably connected with the rear lower rod on the corresponding side. 2. The children's stroller according to claim 1, wherein the cross brace assembly further includes a front cross brace assembly disposed between the front brackets on the left and right sides, and the front cross brace assembly includes one end. The other ends of the two front cross braces are rotatably connected to the front bracket on the corresponding side. 3. The children's stroller according to claim 2, wherein the stroller frame further includes a first linkage mechanism that drives the two front cross braces to rotate and fold relative to each other when the side brackets are folded. , the first linkage mechanism includes a first connecting rod, one end of the first connecting rod is rotationally connected to the front cross brace through a first axis, the first axis extends in the front and rear direction, and the first The other end of the connecting rod is rotationally connected to the rear upper rod through a second axis, and the second axis extends in the left and right direction. 4. The children's stroller according to claim 3, characterized in that: when the children's stroller is in the unfolded state, the rotation of the first connecting rod and the rear upper bar on the rear upper bar The connection point is located in front of the rotation connection point between the lower connecting rod and the rear upper rod. 5. The children's stroller according to claim 3, wherein the front cross brace includes a main brace extending in the left and right direction and a connecting rod with one end fixed on the main brace. One end of the main strut is rotatably connected, the other ends of the two main struts are rotatably connected to the front bracket on the corresponding side, and one end of the first connecting rod is connected to the connecting rod. The other end is connected by rotation. 6. The children's stroller according to claim 1, wherein the stroller frame further includes a second linkage mechanism that drives the two rear cross braces to rotate and fold relative to each other when the side brackets are folded. , the second linkage mechanism includes a second connecting rod, one end of the second connecting rod is rotationally connected to the rear cross brace through a third axis, the third axis extends along the front and rear direction, and the second The other end of the connecting rod is rotationally connected to the lower connecting rod through a fourth axis, and the fourth axis extends in the left and right direction. 7. The children's stroller according to claim 6, wherein when the children's stroller is in an unfolded state, the lower link is rotatably connected to the push rod assembly. , the rotational connection between the lower link and the rear upper rod, the rotational connection between the lower link and the front link, the rotational connection between the lower link and the second link , the rotation connection points of the lower connecting rod and the rear pull rod are arranged sequentially from top to bottom. 8. The children's stroller according to claim 1, characterized in that: when the children's stroller is in the unfolded state, the axis of the rotating shaft of the front connecting rod and the front bracket is rotatably connected, and the front The axis of the rotating shaft between the connecting rod and the lower connecting rod and the axis of the rotating shaft between the lower connecting rod and the rear upper rod are located in the same plane. 9. The children's stroller according to claim 1, wherein the side bracket further includes a seat post and a sliding sleeve that is sleeved on the seat post and can be slidably arranged relative to the seat post. The rear end of the rod is rotatably connected to the upper part of the lower link, and the sliding sleeve is rotatably connected to the side armrest. 10. The children's stroller according to claim 9, characterized in that: the cross support assembly further includes a cross support assembly, and the cross support assembly includes two cross support rods that rotate at the intersection, each of which One end of the stay is rotatably connected to the rear end of the seat post on one side, and the other end of each stay is rotatably connected to the lower link on the other side. 11. The children's stroller according to claim 1, wherein the push rod assembly includes a lower push rod, a middle portion slidably disposed on the lower push rod along the length extension direction of the lower push rod. Push rod, an upper push rod slidably disposed on the middle push rod along the length extension direction of the middle push rod, and a first push rod for locking the relative positions of the lower push rod and the middle push rod. A locking mechanism, a second locking mechanism for locking the relative positions of the middle push rod and the upper push rod, a first unlocking mechanism and a first unlocking piece for driving the first locking mechanism to unlock, the The first unlocking piece is rotatably disposed on the upper push rod. The first unlocking piece cooperates with the first unlocking mechanism. When the first unlocking mechanism is operated, the first unlocking piece is in the position of first position, and unlock the second locking mechanism; when the first unlocking mechanism is released, the first unlocking piece is in the second position; when the first unlocking piece is in the second position, the When the upper push rod slides downward and is close to the middle push rod, the first unlocking member cannot drive the first locking mechanism to unlock; when the first unlocking member is in the first position, the upper push rod moves toward When the downward slide comes close to the middle push rod, the first unlocking piece can drive the first locking mechanism to unlock. 12. The stroller of claim 11, wherein the first locking mechanism includes a first locking mechanism slidably disposed on one of the middle push rod and the lower push rod. The locking piece and the first locking groove provided on the other, the first locking piece can be inserted into the first locking groove or disengaged from the first locking groove; when the first unlocking piece When the upper push rod slides downward and comes close to the middle push rod in the second position, the first unlocking part can abut and cooperate with the first locking part but cannot drive the first locking part to slide. ; When the first unlocking piece is in the first position, when the upper push rod slides downward and is close to the middle push rod, the first unlocking piece can resist and cooperate with the first locking piece to drive The first locking piece slides. 13. The children's stroller according to claim 12, characterized in that: the first unlocking part is provided with an unlocking part, and the first locking part is provided with a first fitting part and a second fitting part respectively; when When the first unlocking piece is in the first position, the position of the unlocking part corresponds to the position of the first matching part. When the upper push rod slides downward, the unlocking part and the first matching part The fitting part is against the fitting; when the first unlocking part is in the second position, the position of the unlocking part corresponds to the position of the second fitting part, and when the upper push rod slides downward, the The unlocking part is engaged with the second matching part. 14. The children's stroller according to claim 13, wherein the unlocking part has a first slope, and the first fitting part has a second slope matching the first slope. When an unlocking member is in the first position, when the upper push rod slides downward and comes close to the middle push rod, the first inclined surface and the second inclined surface can abut and cooperate. 15. The children's stroller according to claim 12, characterized in that: the children's stroller further includes a third member for locking the relative positions of the push rod assembly and the lower link or the side armrest. A locking mechanism and a second unlocking mechanism are movably provided on the lower push rod for driving the third locking mechanism to unlock. When the middle push rod slides downward and comes close to the lower push rod, the middle push rod The push rod can cooperate with the second unlocking mechanism to drive the second unlocking mechanism to unlock the third locking mechanism. 16. The children's stroller according to claim 15, characterized in that: the first locking slots are respectively provided at the upper and lower ends of the lower push rod, and when the children's stroller is in an unfolded state, the The first locking piece is inserted into the first lock groove located at the upper part. When the middle push rod slides downward and comes close to the lower push rod, the first locking piece can be inserted into the first locking slot at the lower part. In the first lock groove, the middle push rod cannot slide downward to cooperate with the second unlocking mechanism, so that the third locking mechanism cannot unlock. 17. The children's stroller according to claim 11, characterized in that: the first unlocking mechanism includes a second unlocking piece slidably disposed in the upper push rod, and the second unlocking piece is respectively connected with the first unlocking piece. The first unlocking piece and the second locking mechanism are in contact with each other. When the second unlocking piece is driven to slide relative to the upper push rod to unlock the second locking mechanism, the first unlocking piece is relative to the The upper push rod rotates from the second position to the first position. 18. The children's stroller according to claim 11, wherein the children's stroller further comprises a first elastic member for urging the first unlocking member to rotate from the first position to the second position.