CN102069834B - Children handcart - Google Patents

Abstract

A children's trolley, comprising a stroller frame, a front wheel assembly, a rear wheel assembly frame locking mechanism, and a seat mechanism, the stroller frame includes a side bracket and a connecting frame, and the side brackets on each side include a bottom frame, a front strut rotatably connected to the base frame, a front strut rotatably connected to the front strut, a middle strut rotatably connected to the front strut, and a rear strut, The lower part of the rear strut and the lower part of the middle strut are connected with the three parts of the chassis, two of which are rotatably connected, and the third part is rotatably connected with one of the two. connected, the rear strut is slidably and rotatably set with the front bracket. After the frame locking mechanism is unlocked, turn the front bracket downwards, and when the sliding part of the frame slides backward, the rear strut moves closer to the bottom frame, and at the same time, the front strut and middle strut move closer to the bottom frame The front brackets are close to each other, the whole vehicle is folded, and the volume is smaller after folding .

Description

A kind of children's trolley

technical field

The invention relates to a stroller for children.

Background technique

A children's stroller in the prior art includes a stroller frame with an unfolded position and a folded position, a wheel assembly arranged at the lower part of the stroller frame, and a seat mechanism arranged on the stroller frame . A locking mechanism for locking the cart frame in the unfolded position. There are many types of existing trolley frames, the number of rods of the cart frame is different, and the connection relationship and connection position between the rods are different, so the folding principles and folding methods are different.

Contents of the invention

The technical problem to be solved by the invention is to provide a children's trolley.

In order to solve the above technical problems, a technical solution adopted by the present invention is: a children's stroller, including a stroller frame with an unfolded position and a folded position, and a front wheel assembly arranged at the front bottom of the stroller frame , the rear wheel assembly arranged at the bottom rear part of the cart frame, the frame locking mechanism for locking the cart frame in the unfolded position, and the seat mechanism arranged on the cart frame , the cart frame includes side brackets on both sides constituting the link mechanism, a connecting frame connected between the side brackets on both sides, and the seat mechanism is arranged on the side brackets on both sides between side brackets, the side brackets on each side include

The bottom frame, the length direction of the bottom frame extends along the front-to-back direction;

a front strut, the lower part of the front strut is rotatably connected to the front part of the chassis through a first rotating shaft;

a front bracket, the lower part of the front bracket is rotatably connected to the upper part of the front strut through the fourth rotating shaft;

a middle strut, the upper part of the middle strut is rotatably connected to the front bracket through the fifth rotating shaft, and the fifth rotating shaft is located above the fourth rotating shaft;

Rear strut, the lower part of the rear strut, the lower part of the middle strut and the three parts of the underframe, two of which are connected in rotation, and the third part is connected with the two One is rotatably connected, and the upper part of the rear support rod is slidably set with the front bracket and rotates around the sixth rotation axis, and the sixth rotation axis is located above the fifth rotation axis.

In some embodiments, the front bracket is slidably provided with a frame slider along its length direction, and the upper part of the rear brace is in contact with the frame slider through the sixth rotating shaft. rotationally connected.

In some further embodiments, the frame locking mechanism is arranged between the frame slider and the front bracket, or between the upper part of the rear strut and the front bracket between.

In some embodiments, the lower part of the middle strut is rotatably connected with the underframe through the second rotating shaft, and the lower part of the rear strut is rotatably connected with the underframe through the third rotating shaft. The second rotating shaft is located between the first rotating shaft and the third rotating shaft.

In some embodiments, the side brackets on each side further include push rods, the push rods are slidably arranged with the front brackets along the length direction of the front brackets, and the push rods A push rod locking mechanism is arranged between the rod and the front bracket.

In some embodiments, the seat mechanism is detachably connected to the front brackets on both sides.

In some further embodiments, the seating mechanism includes

A seatpost connecting piece, the said seatpost connecting piece is fixedly connected to the said front bracket through the under-seat detachment mechanism;

a seat post, the front portion of the seat post is rotatably connected to the seat post connector via a seventh rotating shaft;

a connecting rod, the lower part of the connecting rod is rotatably connected to the rear part of the seat post through the ninth rotating shaft;

The connecting rod sliding part is slidably connected with the front bracket through the dismounting mechanism on the seat, and the upper part of the connecting rod is connected with the connecting rod sliding part through the tenth rotating shaft. rotationally connected, said link slider is located above said seat post connector,

A seat locking mechanism is arranged between the link slider and the front bracket.

In some embodiments, the side brackets on each side further include a U-shaped wheel link that is rotatably connected to the bottom frame, and the rotation axis of the wheel link is in line with the The length direction of the chassis is consistent, the front end of the wheel link is provided with the front wheel assembly, the rear end of the wheel link is provided with the rear wheel assembly, and the rear wheel The assembly is connected to the rear part of the wheel link, and the cart frame also includes a synchronous control mechanism for synchronously controlling the turning of the wheel links on both sides relative to the cart frame.

In some further embodiments, the rear wheel assembly includes a rear wheel joint, and a rear wheel disposed on the rear wheel joint, and the front wheel assembly includes a front wheel joint, disposed on the front wheel The front wheel on the joint, the rear wheel joint is fixedly connected with the rear part of the wheel link, and the front wheel joint is connected with the front part of the wheel link,

The synchronous control mechanism includes a joystick, and the front parts on both sides of the joystick are respectively rotatably connected to the rear parts of the chassis on the corresponding side, and the rotation axis of the joystick is along the The left and right directions of the cart frame extend,

The control lever has a first working position and a second working position. When the control lever is in the first working position, the front wheels on both sides and the rear wheels on both sides are respectively erected relative to the ground and can Rolling on the ground, the rear part of the control lever is set between the rear wheel joints on both sides, when the control lever is in the second working position, the front wheels on both sides and The said rear wheels on both sides are overturned relative to the ground and are located directly below the cart frame,

Between the rear wheel joint or the front wheel joint or the wheel link on each side and the underframe on the corresponding side, there is a limit stop when the control lever is in the first working position. The limiting mechanism for the rear wheel joint to turn outward relative to the underframe,

At least one of the underframe, the rear wheel joint, the wheel link and the control lever is provided with a button for locking the control lever in the first working position. Flip locking mechanism.

In some embodiments, the connecting frame is a plurality of cross bars connected between the side supports on both sides.

The orientation words such as upper, lower, front and rear mentioned above are defined when the cart frame is in the unfolded position, the position of the front wheel assembly is the front, and the position of the rear wheel assembly is the rear.

The scope of the present invention is not limited to technical solutions formed by a specific combination of the above technical features, but also covers other technical solutions formed by any combination of the above technical features or equivalent features. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Due to the application of the above-mentioned technical solutions, the present invention has the following advantages compared with the prior art: after the frame locking mechanism is unlocked, the front bracket is rotated downward, and when the frame slider slides backward, the rear strut draws closer to the bottom frame, and At the same time, the front struts and the middle struts are all moved closer to the bottom frame and to the front support, so that the whole vehicle is folded, and the folded volume is smaller.

Description of drawings

Accompanying drawing 1 is the three-dimensional view of the present invention (the cart frame is positioned at the unfolded position, and the cart frame is provided with a seat mechanism);

Accompanying drawing 2 is the front view of the present invention (the cart frame is located in the unfolded position, and the cart frame is not provided with a seat mechanism);

Accompanying drawing 3 is the front view of seat mechanism;

Accompanying drawing 4 is the three-dimensional view of the present invention (the cart frame is located in the unfolded position, and the cart frame is not provided with a seat mechanism);

Accompanying drawing 5 is the front view of the present invention (the cart frame is located in the deployed position, and the cart frame is provided with a seat mechanism);

Accompanying drawing 6 is the front view 1 of the present invention (the stroller frame is in the process of switching from the unfolded position to the folded position, the stroller frame is provided with a seat mechanism);

Accompanying drawing 7 is a three-dimensional view 1 of the present invention (the cart frame is in the process of switching from the unfolded position to the folded position, and the cart frame is provided with a seat mechanism);

Accompanying drawing 8 is the front view II of the present invention (the stroller frame is in the process of switching from the unfolded position to the folded position, and the stroller frame is provided with a seat mechanism);

Accompanying drawing 9 is the second perspective view of the present invention (the stroller frame is in the process of switching from the unfolded position to the folded position, and the stroller frame is provided with a seat mechanism);

Accompanying drawing 10 is the front view three of the present invention (the stroller frame is in the process of switching from the unfolded position to the folded position, and the stroller frame is provided with a seat mechanism);

Accompanying drawing 11 is the front view four of the present invention (the cart frame is in the folded position, the front wheel assembly and the rear wheel assembly are not overturned);

Accompanying drawing 12 is the front view five of the present invention (the stroller frame is in the folded position, the front wheel assembly and the rear wheel assembly are flipped and folded inward).

Among them: 1. Cart frame; 2. Front wheel assembly; 3. Rear wheel assembly; 4. Underframe; 5. Front strut; 6. Front bracket; 7. Middle strut; 8. Rear strut; 9 , frame sliding part; 10, push rod; 11, seat mechanism; 12, seat post connector; 13, seat post; 14, connecting rod; 15, connecting rod sliding part; 16, wheel connecting rod; 17, first Revolving axis; 18, second revolving axis; 19, third revolving axis; 20, fourth revolving axis; 21, fifth revolving axis; 22, sixth revolving axis; 23, seventh revolving axis; 25, ninth revolving axis; 26, tenth revolving axis; 27. Control lever; 28. Rear wheel joint.

Detailed ways

As shown in the accompanying drawings, a children's stroller includes a stroller frame 1 with an unfolded position and a folded position, a front wheel assembly 2 arranged at the bottom front of the stroller frame 1, and a front wheel assembly 2 arranged at the bottom of the stroller frame 1. The rear wheel assembly 3 at the bottom rear of the cart frame 1, the frame locking mechanism for locking the cart frame 1 in the unfolded position, and the seat mechanism 11 arranged on the cart frame 1, Described stroller frame 1 comprises the side support that is positioned at both sides and constitutes the side support of link 14 mechanism, the connecting frame that is connected between described side support of both sides, and described connecting frame is connected to both sides. A plurality of cross bars between the side brackets mentioned above, and the seat mechanism 11 is arranged between the side brackets on both sides.

As shown in accompanying drawing 1-accompanying drawing 2, accompanying drawing 4-accompanying drawing 12, described side support of each side comprises

Underframe 4, the length direction of the underframe 4 extends along the front-to-back direction;

A front strut 5, the lower part of the front strut 5 is rotatably connected to the front part of the underframe 4 through a first rotating shaft 17;

A front bracket 6, the lower part of the front bracket 6 is rotatably connected to the upper part of the front strut 5 through the fourth rotating shaft 20;

Middle strut 7, the upper part of said middle strut 7 is rotationally connected with said front bracket 6 through a fifth rotating shaft 21, said fifth rotating shaft 21 is located above said fourth rotating shaft 20;

Rear strut 8, the upper part of said rear strut 8 slides with said front support 6 and is arranged to rotate around a sixth rotating shaft 22, said sixth rotating shaft 22 is located at said fifth rotating shaft 21 above,

As shown in accompanying drawing 1-accompanying drawing 2, accompanying drawing 4-accompanying drawing 12, the lower part of described middle strut 7 is rotationally connected with described underframe 4 through second rotating shaft 18, and described rear support The lower part of the rod 8 is rotatably connected with the base frame 4 through the third rotating shaft 19 , and the second rotating shaft 18 is located between the first rotating shaft 17 and the third rotating shaft 19 . After being folded, the front bracket 6 and the bottom frame 4 are compact, and the folded volume is small.

Not shown in the figure, it is also possible that the lower part of the middle strut 7 is coaxially connected with the bottom frame 4 and the lower part of the rear strut 8 through the third rotating shaft 19, or the middle The lower part of the strut 7 is rotatably connected to the underframe 4 through the second rotating shaft 18, the lower part of the rear strut 8 is rotatably connected to the middle strut 7 through the third rotating shaft 19, and then Or the lower part of the rear strut 8 is rotationally connected with the underframe 4 through the third rotating rear 19, and the lower part of the middle strut 7 is connected with the rear strut 8 through the second rotating shaft 18 Rotately connected.

The front bracket 6 is slidably provided with a frame slider 9 along its length, and the upper part of the rear strut 8 is rotatably connected to the frame slider 9 through the sixth rotating shaft 22. connect.

The frame locking mechanism is arranged between the frame slider 9 and the front bracket 6 . The described vehicle frame locking mechanism is not the gist of the invention of the present invention, as long as it is a locking mechanism capable of locking two sliding parts, it can be used. For example, the vehicle frame sliding member 9 is provided with a locking hole, and the described The front support 6 is provided with a spring pin, and the spring pin is inserted in the lock hole, and the vehicle frame locking mechanism locks.

The side brackets on each side also include a push rod 10, and the push rod 10 is slidably arranged with the front bracket 6 along the length direction of the front bracket 6, and the push rod 10 is connected with the front bracket 6. A push rod locking mechanism is arranged between the front brackets 6 . The described push rod locking mechanism is not the gist of the present invention, as long as it is a locking mechanism that can lock two sliding parts, it can be used similarly to the structure of the above-mentioned vehicle frame locking mechanism, and the specific structure will not be described here. Let me repeat.

The seat mechanism 11 is detachably connected to the front brackets 6 on both sides.

As shown in accompanying drawing 1, accompanying drawing 3, accompanying drawing 5-accompanying drawing 9, described seat mechanism 11 comprises

Seatpost connecting piece 12, said seatpost connecting piece 12 is fixedly connected to said front bracket 6 through the under-seat detachment mechanism;

Seat post 13, the front part of the seat post 13 is rotatably connected to the seat post connector 12 through the seventh rotating shaft 23;

A connecting rod 14, the lower part of the connecting rod 14 is rotatably connected to the rear part of the seatpost 13 through the ninth rotating shaft 25;

Link slider 15, said link slider 15 is slidably connected with said front bracket 6 through a dismounting mechanism on the seat, the upper part of said link 14 is connected with said link slider 15 The tenth rotating shaft 26 is rotatably connected, and the connecting rod sliding part 15 is located above the seat post connecting part 12, and the seat mechanism 11 can be folded together with the stroller frame 1, which is convenient to fold.

A seat locking mechanism is arranged between the link slider 15 and the front bracket 6 .

The seat locking mechanism is not the gist of the present invention, as long as it is a locking mechanism that can lock two sliding parts, it can be similar to the structure of the above-mentioned vehicle frame locking mechanism, and the specific structure will not be repeated here. repeat.

As shown in accompanying drawing 7, accompanying drawing 9, described side support on each side also comprises the wheel link 16 that is U-shape that is rotatably connected with described underframe 4, and the rotation of described wheel link 16 The axis line is consistent with the length direction of the underframe 4, the front end of the wheel link 16 is provided with the front wheel assembly 2, and the rear end of the wheel link 16 is provided with a The rear wheel assembly 3 is connected to the rear part of the wheel link 16, and the cart frame 1 also includes the wheel link for synchronously controlling both sides. The synchronous control mechanism for the overturning of the bar 16 relative to the cart frame 1 . The rear wheel assembly 3 includes a rear wheel joint 28 and a rear wheel arranged on the rear wheel joint 28, and the front wheel assembly 2 includes a front wheel joint and a front wheel joint arranged on the front wheel joint. Wheel, the rear wheel joint 28 is fixedly connected with the rear part of the wheel link 16, and the front wheel joint is connected with the front part of the wheel link 16,

The synchronous control mechanism includes a joystick 27, and the front parts on both sides of the joystick 27 are respectively connected in rotation with the rear parts of the chassis 4 on the corresponding side, and the rotation axis of the joystick 27 is The heart line extends along the left-right direction of the cart frame 1,

The control lever 27 has a first working position and a second working position. When the control lever 27 is in the first working position, the front wheels on both sides and the rear wheels on both sides are respectively erected relative to the ground. And can roll on the ground, the rear portion of the control lever 27 is set between the rear wheel joints 28 on both sides, when the control lever 27 is in the second working position, all the control levers on both sides The front wheels and the rear wheels on both sides are overturned relative to the ground and are located directly below the cart frame 1, and the rear part of the control lever 27 is no longer supported on the two sides. between the rear wheel joints 28, thus the rotation of the wheel link 16 relative to the corresponding underframe 4 is no longer restricted,

The rear wheel joint 28 on each side or the front wheel joint or the wheel link 16 is provided with the corresponding side of the chassis 4 when the control lever 27 is in the first working position. The limit mechanism that restricts the rear wheel joint 28 to turn outward relative to the underframe 4 in the lower position,

At least one of the underframe 4 , the rear wheel joint 28 , the wheel link 16 and the control lever 27 is provided with a device for locking the control lever 27 to the second control lever 27 . - Turn-over locking mechanism in working position.

When the cart frame 1 is in the folded position, switch the control lever 27 from the first working position to the second working position, turn the front wheel assembly 2 and the rear wheel assembly 3 inwards, reduce the height dimension, make it flatter, and fold the volume Smaller; while the stroller frame 1 is in the unfolded position, switch the control lever 27 from the first working position to the second working position, turn the front wheel assembly 2 and the rear wheel assembly 3 inwardly, and the stroller can be used as a child seat Chair use.

The flip locking mechanism is not the gist of the present invention. For example, a locking groove may be provided on the rear wheel joint. When the control lever 27 is in the first working position, the rear portion of the control lever 27 is clamped on In the clamping groove, and it takes a lot of force to disengage the control rod 27 from the clamping groove.

The seat mechanism also includes a backrest, the lower end of the backrest is rotatably connected to the rear end of the seatpost 13, and a The backrest locking mechanism that locks the backrest frame in multiple working positions, such as the backrest locking mechanism includes a plurality of locking grooves arranged on the seat post 13, and the locking holes are evenly distributed in two The rotation center of the person is on the circumference of the center of the circle, and the backrest frame is provided with a lock pin, and the lock pin is inserted in one of the lock slots, and the backrest locking mechanism locks.

As mentioned above, we have fully described according to the purpose of the present invention, but the present invention is not limited to the above-mentioned embodiments and implementation methods. Practitioners in the relevant technical fields may make various changes and implementations within the scope permitted by the technical ideas of the present invention.

Claims (10)

1. A stroller for children, comprising a stroller frame (1) with an unfolded position and a folded position, a front wheel assembly (2) arranged at the front bottom of the stroller frame (1), The rear wheel assembly (3) at the bottom and rear of the cart frame (1), the frame locking mechanism for locking the cart frame (1) in the unfolded position, and the frame locking mechanism arranged on the cart frame (1) on the seat mechanism (11), the cart frame (1) includes side brackets on both sides constituting the linkage (14) mechanism, and the side brackets connected between the side brackets on both sides The connecting frame, the seat mechanism (11) is arranged between the side brackets on both sides, and it is characterized in that: the side brackets on each side include The chassis (4), the length direction of the chassis (4) extends along the front-to-back direction; A front strut (5), the lower part of the front strut (5) is rotatably connected to the front part of the chassis (4) through the first rotating shaft (17); A front bracket (6), the lower part of the front bracket (6) is rotatably connected to the upper part of the front strut (5) through the fourth rotating shaft (20); The middle strut (7), the upper part of the middle strut (7) is rotationally connected with the front support (6) through the fifth rotating shaft (21), and the fifth rotating shaft (21) is located at the above the fourth rotating shaft (20); Rear strut (8), the lower part of the rear strut (8), the lower part of the middle strut (7) and the chassis (4), two of which rotate ground connection, the third part is rotationally connected with one of the two, and the upper part of the rear strut (8) slides with the front bracket (6) and rotates around the sixth rotation axis (22) Arranged so that the sixth rotating shaft (22) is located above the fifth rotating shaft (21). 2. A children's trolley according to claim 1, characterized in that: the front bracket (6) is provided with a frame slider (9) slidingly along its length direction, and the rear strut ( 8) is rotationally connected with the frame slider (9) through the sixth rotating shaft (22). 3. A children's trolley according to claim 2, characterized in that: the frame locking mechanism is arranged between the frame slider (9) and the front bracket (6), or It is arranged between the upper part of the rear strut (8) and the front bracket (6). 4. A stroller for children according to claim 1, characterized in that: the lower part of the middle strut (7) is rotationally connected with the bottom frame (4) through the second rotating shaft (18), The lower part of the rear strut (8) is rotationally connected with the chassis (4) through the third shaft (19), and the second shaft (18) is located on the first shaft (17) ) and the third rotating shaft (19). 5. A stroller for children according to claim 1, characterized in that: the side brackets on each side further include push rods (10), and the push rods (10) are along the front brackets ( 6) is set to slide with the front bracket (6) in the length direction, and a push rod locking mechanism is arranged between the push rod (10) and the front bracket (6). 6. A stroller for children according to claim 1, characterized in that: the seat mechanism (11) is detachably connected to the front brackets (6) on both sides. 7. The stroller for children according to claim 6, characterized in that: the seat mechanism (11) includes Seat post connector (12), the seat post connector (12) is fixedly connected to the front bracket (6) through the under-seat detachment mechanism; a seat post (13), the front part of the seat post (13) is rotatably connected to the seat post connector (12) through the seventh rotating shaft (23); A connecting rod (14), the lower part of the connecting rod (14) is rotationally connected to the rear part of the seatpost (13) through the ninth rotating shaft (25); The connecting rod sliding part (15), the connecting rod sliding part (15) is slidably connected to the front bracket (6) through the dismounting mechanism on the seat, and the upper part of the connecting rod (14) is connected with the The link slider (15) is rotatably connected through the tenth shaft (26), the link slider (15) is located above the seat post connector (12), A seat locking mechanism is arranged between the link slider (15) and the front bracket (6). 8. A children's trolley according to claim 1, characterized in that: the side brackets on each side further include a U-shaped wheel link (16) rotatably connected to the bottom frame (4). ), the rotation axis of the wheel link (16) is consistent with the length direction of the underframe (4), and the front end of the wheel link (16) is provided with the front wheel Assembly (2), the rear end of the wheel link (16) is provided with the rear wheel assembly (3), the rear wheel assembly (3) and the wheel link (16) The rear part is connected, and the cart frame (1) also includes a synchronous control mechanism for synchronously controlling the turning of the wheel links (16) on both sides relative to the cart frame (1). 9. A children's trolley according to claim 8, characterized in that: the rear wheel assembly (3) includes a rear wheel joint (28), a rear wheel set on the rear wheel joint (28) , the front wheel assembly (2) includes a front wheel joint, a front wheel set on the front wheel joint, the rear wheel joint (28) and the rear part of the wheel link (16) is fixedly connected, the front wheel joint is connected with the front part of the wheel link (16), The synchronous control mechanism includes a joystick (27), and the front parts on both sides of the joystick (27) are respectively connected in rotation with the rear parts of the chassis (4) on the corresponding side, and the The axis of rotation of the joystick (27) extends along the left-right direction of the cart frame (1), The control lever (27) has a first working position and a second working position. When the control lever (27) is in the first working position, the front wheels on both sides and the rear wheels on both sides are respectively It stands upright relative to the ground and can roll on the ground. The rear part of the control lever (27) is set between the rear wheel joints (28) on both sides. When the control lever (27) is in the In the second working position, the front wheels on both sides and the rear wheels on both sides are overturned relative to the ground and are located directly below the cart frame (1), When the said control When the rod (27) is in the first working position, it is a limiting mechanism that restricts the rear wheel joint (28) from turning outward relative to the chassis (4), At least one of the underframe (4), the rear wheel joint (28), and the wheel link (16) and the control lever (27) are provided for connecting the The control lever (27) described above is locked in the flip locking mechanism under the first working position. 10. A kind of children's trolley according to claim 1, characterized in that: the connecting frame is a plurality of cross bars connected between the side brackets on both sides.

Images