CN114572292A - Children's shallow frame - Google Patents

Abstract

The invention discloses a stroller frame which can move from an unfolding position to a folding position after a locking device is unlocked, comprising: the lower ends of the front legs are connected with front wheel components; the rear leg comprises a rear leg rod and a connecting seat connected to the upper end of the rear leg rod, the front leg is rotatably connected to the front side of the connecting seat around a first axis A, and the lower end of the rear leg rod is connected with a rear wheel assembly; the stay bar is rotatably connected to the rear side of the connecting seat around a second axis B, and a linkage piece which can enable the front leg to rotate and approach towards the rear leg when the stay bar rotates and approaches towards the rear leg is arranged between the stay bar and the front leg; the rear end of the seat supporting piece is rotatably connected to the front leg around a third axis C, and a transmission assembly capable of driving the seat supporting piece to approach the front leg when the front leg rotates to approach the rear leg is arranged between the seat supporting piece and the front leg. The invention aims to overcome the defects of the prior art and provides the stroller frame which is simple in folding structure and convenient to fold.

Description

A child stroller frame

【Technical field】

The invention relates to a frame of a children's stroller.

【Background technique】

With the development of society, strollers have become an indispensable tool for infants and young children to travel. In addition to the basic requirements of the safety and stability of the stroller, parents pay more and more attention to the characteristics of the stroller, which is easy to fold, small in size, and easy to store. In view of this, at present, children's strollers generally have a foldable function, and when in use, the stroller is unfolded, and when not in use, the stroller is folded to facilitate portability and reduce occupied space. The present invention also provides a new embodiment.

The present invention is developed based on the above-mentioned shortcomings.

[Content of the Invention]

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a child stroller frame with a simple folding structure and convenient folding.

The present invention is achieved through the following technical solutions:

A stroller frame capable of moving from a deployed position to a folded position after unlocking a locking device, comprising:

The front leg 11, the lower end of the front leg 11 is connected with the front wheel assembly 111;

The rear leg 12, the rear leg 12 includes a rear leg rod 121 and a connecting seat 122 connected to the upper end of the rear leg rod 121, the front leg 11 is rotatably connected to the front side of the connecting seat 122 around the first axis A, the said The lower end of the rear leg bar 121 is connected with a rear wheel assembly 123;

The strut 13 is connected to the rear side of the connecting seat 122 in rotation around the second axis B. Between the strut 13 and the front leg 11, there is a space between the strut 13 and the front leg 11. The linkage 14 that makes the front leg 11 rotate toward the rear leg 12;

The seat support member 2, the rear end of the seat support member 2 is rotatably connected to the front leg 11 around the third axis C, and between the seat support member 2 and the front leg 11, there is a rear leg from the front leg 11 to the rear. 12 is a transmission assembly 3 that can drive the seat support 2 to move closer to the front legs 11 when it is rotated to move closer.

The transmission assembly 3 includes a sliding member 31 slidably connected to the front leg 11 , a first transmission rod 32 is rotatably connected between the sliding member 31 and the front end of the seat support member 2 , and the sliding member 31 is connected to the A second transmission rod 33 is also movably connected between the seats 122 , the front leg 11 is provided with a chute 112 for the sliding member 31 to slide inside, and the chute 112 is provided with a rotation of the front leg 11 on the chute 112 At the same time, the pushing portion 34 that can push the sliding member 31 to slide so as to make the seat support 2 rotate, unfold or fold.

One end of the second transmission rod 33 is rotatably connected to the connecting seat 122 around the fourth axis D, and the other end of the second transmission rod 33 is rotatably connected to the sliding member 31 around the fifth axis E. The first One end of the transmission rod 32 is rotatably connected to the front end of the seat support member 2 around the eighth axis H, and the other end of the first transmission rod 32 is rotatably connected to the sliding member 31 around the fifth axis E.

The pushing portion 34 includes an upper pushing surface 341 disposed in the chute 112 and capable of pushing the sliding member 31 to drive the seat support 2 to rotate and fold when the front leg 11 is rotated and folded to the rear leg. The pushing portion 34 further includes a lower pressing surface 342 disposed in the chute 112 and capable of pushing the sliding member 31 to drive the seat support 2 to rotate and unfold when the front leg 11 is rotated and unfolded relative to the rear leg.

The sliding member 31 is a pin shaft.

The first axis A and the second axis B are parallel to each other.

One end of the link member 14 is connected to the strut 13 in rotation around the sixth axis F, the sixth axis F is deviated from the second axis B and is parallel to the second axis B, and the other end of the link member 14 is around the seventh axis. The axis G is rotatably connected to the front legs 12 , and the seventh axis G is offset from the first axis A and parallel to the first axis A. As shown in FIG.

The locking device 4 is arranged between the strut 13 and the rear leg 12 , and the locking device 4 can lock the frame of the stroller in the unfolded state. The locking device 4 includes a connecting seat 122 . The left rotation seat 41 and the right rotation seat 42 which are arranged on the strut 13 and are rotatably connected with the left rotation seat 41, the left rotation seat 41 and the right rotation seat 42 are surrounded by a cavity. 43, the cavity 43 is provided with a spline 44 that can slide relative to it, and the left rotation seat 41 and the right rotation seat 42 are provided with a spline groove 45 that can be engaged with the spline 44, so Between the spline 44 and the left rotation seat 41, there is an elastic member 46 that can make the spline 44 engage with the spline grooves 45 on the left rotation seat 41 and the right rotation seat 42 at the same time. Between 44 and the right rotating seat 42, there is a pushing member 47 that can push the spline 44 out of the spline groove 45 on the right rotating seat 42 and enter into the left rotating seat 41 when being pushed. The pushing member 47 is provided with an extension portion 471 that can extend into the strut 13 .

A handle bar 5 capable of unlocking the locking device 4 when sliding is connected inside the brace bar 13 , and a locking structure 6 capable of locking the two is provided between the handle bar 5 and the brace bar 13 .

The locking structure 6 includes a locking position 61 provided on the support rod 13, and the handle bar 5 is connected with a latching member 62 that can slide laterally relative to the locking position 61 to be engaged or disengaged from the locking position 61. The handle bar 5 is also connected with a driving member 63 that can drive the latching member 62 to slide laterally and disengage from the locking position 61 when sliding vertically. The handle bar 5 is also rotatably connected with an operating member 64, and the The operating member 64 and the driving member 63 are connected with a cable 65 that can pull the driving member 63 to slide when the operating member 64 is operated. The reset first elastic reset member 66 is connected with a second elastic reset member 67 capable of driving the operating member 64 to reset between the operating member 64 and the handle bar 5 .

Compared with the prior art, the present invention has the following advantages: when the child stroller frame of the present invention needs to be folded, the locking device is first unlocked, and then the strut is pushed around the second axis B to rotate toward the rear leg bar, and the strut is rotating. When the linkage moves, it drives the front leg to rotate relative to the connecting seat around the first axis A and folds toward the rear leg bar, and when the front leg moves toward the rear leg bar, the front leg drives the transmission assembly to move, thereby making the transmission The assembly drives the seat support to rotate relative to the front leg around the third axis C and folds close to the front leg. At this time, the folding of the entire stroller frame is completed. The folding method is very simple. It only needs to rotate the support after unlocking the locking device. This can be done by moving the bar closer to the rear leg bar.

[Description of drawings]

Fig. 1 is one of the perspective views of the frame of the child's stroller of the present invention;

Fig. 2 is the second perspective view of the frame of the children's stroller of the present invention;

Figure 3 is a side view of the child's stroller frame of the present invention;

Fig. 4 is one of the sectional views of the frame of the stroller of the present invention;

Fig. 5 is the second sectional view of the frame of the children's stroller of the present invention;

Fig. 6 is the state diagram when the child's stroller frame of the present invention is folded;

7 is a cross-sectional view of the child stroller frame of the present invention when it is folded;

Fig. 8 is the state diagram when the child stroller frame of the present invention is folded;

9 is a cross-sectional view of the child stroller frame of the present invention when the folding is completed;

Figure 10 is one of the sectional views of the handle bar in the frame of the stroller of the present invention;

Figure 11 is the second sectional view of the handle bar in the frame of the stroller of the present invention;

12 is a cross-sectional view of a strut and a connecting seat in the frame of the stroller of the present invention;

Figure 13 is one of the exploded views of the locking device in the frame of the stroller of the present invention;

Figure 14 is the second exploded view of the locking device in the frame of the stroller of the present invention;

Figure 15 is an exploded view of the drive assembly in the stroller frame of the present invention.

【Detailed ways】

The present invention will be further described below in conjunction with the accompanying drawings:

As shown in Figures 1 to 15, the present invention provides a child stroller frame, which can be moved from an unfolded position to a folded position after unlocking the locking device, comprising:

The front leg 11, the lower end of the front leg 11 is connected with the front wheel assembly 111;

The rear leg 12, the rear leg 12 includes a rear leg rod 121 and a connecting seat 122 connected to the upper end of the rear leg rod 121, the front leg 11 is rotatably connected to the front side of the connecting seat 122 around the first axis A, the said The lower end of the rear leg bar 121 is connected with a rear wheel assembly 123;

The strut 13 is connected to the rear side of the connecting seat 122 in rotation around the second axis B. Between the strut 13 and the front leg 11, there is a space between the strut 13 and the front leg 11. The linkage 14 that makes the front leg 11 rotate toward the rear leg 12;

The seat support member 2, the rear end of the seat support member 2 is rotatably connected to the front leg 11 around the third axis C, and between the seat support member 2 and the front leg 11, there is a rear leg from the front leg 11 to the rear. 12 is a transmission assembly 3 that can drive the seat support 2 to move closer to the front legs 11 when it is rotated to move closer.

When the frame of the stroller of the present invention needs to be folded, first unlock the locking device, and then push the strut 13 to rotate toward the rear leg bar 121 around the second axis B, and the strut 13 drives the linkage 14 to move when it rotates, and the linkage 14 When moving, the front leg 11 is driven to rotate relative to the connecting base 122 around the first axis A, and the rear leg bar 121 is moved closer and folded, and when the front leg 11 is moved closer to the rear leg bar 121, the front leg 11 drives the transmission assembly 3 to move, thereby making the transmission assembly 3. Drive the seat support 2 to rotate relative to the front leg 11 around the third axis C and fold it closer to the front leg 11. At this time, the folding of the entire stroller frame is completed. The folding method is very simple. It only needs to unlock the locking device. This can be done by turning the rear support rod 13 closer to the rear leg rod 121 .

As shown in FIGS. 4 and 15 , the transmission assembly 3 includes a sliding member 31 slidably connected to the front leg 11 , and a first transmission rod 32 is rotatably connected between the sliding member 31 and the front end of the seat support member 2 . , a second transmission rod 33 is also movably connected between the sliding member 31 and the connecting seat 122, and the front leg 11 is provided with a sliding groove 112 for the sliding member 31 to slide inside. The sliding groove 112 is provided with a pushing portion 34 that can push the sliding member 31 to slide when the front leg 11 is rotated, thereby enabling the seat support 2 to be rotated, unfolded or folded. When the front leg 11 rotates around the first axis A relative to the connecting seat 122 to the rear leg rod 121 , the pushing portion 34 pushes the sliding member 31 to slide relative to the front leg 11 in the chute 112 . At this time, the sliding member 31 also drives the first A transmission rod 32 and a second transmission rod 33 are activated, and the first transmission rod 32 and the second transmission rod 33 cooperate with each other when they are activated, so that the seat support 2 is folded toward the front legs 11 . When the front leg 11 rotates around the first axis A relative to the connecting base 122 and unfolds 32 and the second transmission rod 33 are activated, so that the seat support 2 is unfolded. The arrangement of the second transmission rod 33 enables stable unfolding of the seat support 2 when the stroller frame is in the unfolded state, and the folding action of the seat support 2 can be performed smoothly when the stroller frame is folded.

As shown in FIG. 4 and FIG. 15 , one end of the second transmission rod 33 is rotatably connected to the connecting seat 122 around the fourth axis D, and the other end of the second transmission rod 33 is rotatably connected to the slide around the fifth axis E. one end of the first transmission rod 32 is rotatably connected to the front end of the seat support member 2 around the eighth axis H, and the other end of the first transmission rod 32 is rotatably connected to the sliding member 31 around the fifth axis E . When the sliding member 31 is pushed down by the pushing portion 34 so that the seat support member 2 is rotated and folded, the two ends of the second transmission rod 33 are opposite to the connecting base 122 and the sliding member 31 around the fourth axis D and the fifth axis E respectively. The rotation follows the movement of the sliding member 31, while the first transmission rod 32 is driven by the sliding member 31 to rotate relative to the front end of the seat support member 2 around the eighth axis H and the other end rotates relative to the sliding member 31 around the fifth axis E, the seat support member When the front end of the seat support 2 moves with the first transmission rod 32 and the rear end of the seat support 2 rotates relative to the front leg 11 around the third axis C, the seat support 2 is folded toward the front leg 11 .

As shown in FIGS. 4 to 5 , the first transmission rod 32 is a connecting piece with arc-shaped bending. It is convenient for folding and unfolding, overcomes the dead point of movement between rods, and ensures smooth movement during folding and unfolding.

As shown in FIG. 5 , the pushing portion 34 includes an upper pushing surface disposed in the chute 112 and capable of pushing the sliding member 31 to drive the seat support 2 to rotate and fold when the front leg 11 is rotated and folded toward the rear leg. 341, the pushing portion 34 further includes a lower pushing surface 342 disposed in the chute 112 and capable of pushing the sliding member 31 to drive the seat support 2 to rotate and unfold when the front leg 11 is rotated and unfolded relative to the rear leg. The sliding member 31 is a pin shaft.

As shown in FIG. 4 , the first axis A and the second axis B are parallel to each other.

As shown in FIG. 5 , one end of the linkage 14 is rotatably connected to the strut 13 around a sixth axis F, and the sixth axis F is deviated from the second axis B and is parallel to the second axis B. The linkage The other end of 14 is rotatably connected to the front leg 12 around a seventh axis G, and the seventh axis G is deviated from the first axis A and is parallel to the first axis A. When the strut 13 rotates toward the rear leg bar 121 , one end of the linkage 14 moves with the strut 13 and also rotates relative to the strut 13 around the sixth axis F when following the movement, and the other end of the linkage 14 pulls the front leg 11 It moves and rotates relative to the front leg 11 around the seventh axis G. At this time, the front leg 11 is driven by the linkage 14 to rotate and move closer to the rear leg rod 121 .

As shown in FIGS. 13 to 14 , the locking device 4 is arranged between the strut 13 and the rear leg 12 , and the locking device 4 can lock the frame of the stroller in the unfolded state.

As shown in FIGS. 13 to 14 , the locking device 4 includes a left rotation seat 41 arranged on the connecting seat 122 and a right rotation seat 42 arranged on the strut 13 and rotatably connected with the left rotation seat 41 . A cavity 43 is enclosed between the left rotating seat 41 and the right rotating seat 42, and the cavity 43 is provided with a spline 44 that can slide relative to it. The left rotating seat 41 and the The right rotation seat 42 is provided with a spline groove 45 that can be engaged with the spline 44, and between the spline 44 and the left rotation seat 41 is provided so that the spline 44 can simultaneously engage with the left rotation seat 41 and the right rotation seat 41. The elastic member 46 is engaged with the spline groove 45 on the rotating seat 42 , the spline 44 and the right rotating seat 42 are provided with the spline 44 that can be pushed out of the right rotating seat 42 when being pushed The spline groove 45 is inserted into the pushing member 47 in the left rotating seat 41 , and the pushing member 47 is provided with an extension portion 471 which can extend into the strut 13 . When the frame of the stroller needs to be folded, the locking device 4 needs to be unlocked, and the extension part 471 needs to be pushed up. When the extension part 471 is active, the pusher 47 follows the action and slides laterally, and the pusher 47 pushes the splines 44 and aligns The spline 44 is disengaged from the spline groove 45 on the right rotating seat 42 and completely enters into the left rotating seat 41. At this time, the locking device 4 is unlocked, and the strut 13 can also be relative to the connecting seat 122 around the first axis A turns and moves the rear leg bar 121 closer.

As shown in FIGS. 10 to 12 , the support rod 13 is connected with a handle bar 5 that can unlock the locking device 4 when sliding. Locked locking mechanism 6 . When the handle bar 5 slides relative to the strut 13 , the locking device 4 can be unlocked, and then the strut 13 can be rotated and folded relative to the connecting base 122 .

As shown in FIGS. 10 to 12 , the locking structure 6 includes a locking position 61 provided on the strut 13 , and the handle bar 5 is connected to a lock position 61 that can slide laterally relative to the locking position 61 or disengage from the locking position 61 . The clamping member 62, the handle bar 5 is also connected with a driving member 63 that can drive the clamping member 62 to slide laterally and disengage from the locking position 61 when sliding vertically, and the handle bar 5 is also rotatably connected There is an operating member 64, and a cable 65 that can pull the driving member 63 to slide when the operating member 64 is operated is connected between the operating member 64 and the driving member 63. The driving member 63 and the handle bar 5 are connected. A first elastic reset member 66 capable of driving the driving member 63 to reset is connected between them, and a second elastic reset member 67 capable of driving the operating member 64 to reset is connected between the operating member 64 and the handle bar 5 . The driving member 63 and the clamping member 62 are driven by pins and inclined planes, so that the driving member 63 can drive the clamping member 62 to slide laterally relative to the handle bar 5 when the driving member 63 slides vertically. The locking position 61 is a locking hole, and has a plurality of locking holes, wherein the locking hole at the upper end of the strut 13 is capable of adjusting the height of the handle bar 5 relative to the strut 13, and the locking hole at the lower end of the strut 13 is the locking strut. 13 and handle bar 5 in the folded position. When the locking device 4 needs to be unlocked, the locking structure 6 must be unlocked first, and the operating member 64 is rotated. After the operating member 64 is rotated, the operating member 64 pulls the cable 65 to move. Moving upwards, the driving member 63 drives the engaging member 62 to slide laterally relative to the handle bar 5 to disengage from the locking position 61 . At this time, the handle bar 5 can slide downward relative to the strut 13 to unlock the locking device 4 .

As shown in FIGS. 10 to 11 , the handle bar 5 is provided with a pushing portion 51 capable of pushing the extension portion 471 so as to make the pushing member 47 slide. When the handle bar 5 slides downward relative to the support bar 13, the pushing portion 51 on the handle bar 5 pushes the extension portion 471 and pushes the pushing member 47 to slide laterally. The spline 44 unlocks the locking device 4 .

As shown in FIG. 1 , the seat support 2 is also connected with a foldable seat 7 . The seat 7 can be folded, which further reduces the space occupied by the stroller frame when folded.

Claims (10)

1. A child stroller frame capable of moving from an unfolded position to a folded position after unlocking a locking device, comprising: a front leg (11), the lower end of the front leg (11) is connected with a front wheel assembly (111); A rear leg (12), the rear leg (12) comprises a rear leg rod (121) and a connecting seat (122) connected to the upper end of the rear leg rod (121), and the front leg (11) is around the first axis (A) is rotatably connected to the front side of the connecting seat (122), and the lower end of the rear leg rod (121) is connected with a rear wheel assembly (123); A strut (13), the strut (13) is rotatably connected to the rear side of the connecting seat (122) around the second axis (B), and a strut (13) is provided between the strut (13) and the front leg (11) A linkage (14) that can make the front leg (11) rotate and move closer to the rear leg (12) when the strut (13) rotates closer to the rear leg (12); A seat support (2), the rear end of the seat support (2) is rotatably connected to the front leg (11) around the third axis (C), and the seat support (2) is connected to the front leg (11) ) is provided with a transmission assembly (3) that can drive the seat support (2) to move closer to the front leg (11) when the front leg (11) is rotated toward the rear leg (12). 2. The stroller frame according to claim 1, characterized in that: the transmission assembly (3) comprises a sliding member (31) slidably connected to the front leg (11), and the sliding member ( 31) A first transmission rod (32) is rotatably connected with the front end of the seat support member (2), and a second transmission rod (33) is also movably connected between the sliding member (31) and the connecting seat (122). , the front leg (11) is provided with a chute (112) for the sliding member (31) to slide inside, and the chute (112) is provided with a sliding groove (112) that can slide when the front leg (11) rotates The push slider (31) slides so that the seat support (2) rotates the unfolded or folded push portion (34). 3. The stroller frame according to claim 2, characterized in that: one end of the second transmission rod (33) is rotatably connected to the connecting seat (122) around the fourth axis (D), and the The other end of the second transmission rod (33) is rotatably connected to the sliding member (31) around the fifth axis (E), and one end of the first transmission rod (32) is rotatably connected to the seat support member around the eighth axis (H). (2) The front end, and the other end of the first transmission rod (32) is rotatably connected to the sliding member (31) around the fifth axis (E). 4. The child stroller frame according to claim 2 or 3, characterized in that: the pushing portion (34) comprises a sliding groove (112) and is rotated from the front leg (11) to the rear leg. When folded, the sliding member (31) can be pushed up to drive the seat support member (2) to rotate and fold the upper pressing surface (341). When the front leg (11) rotates and unfolds relative to the rear leg, the lower pressing surface (342) can push the sliding member (31) to drive the seat support member (2) to rotate and unfold. 5. The stroller frame of claim 4, wherein the sliding member (31) is a pin. 6. The stroller frame of claim 1, wherein the first axis (A) and the second axis (B) are parallel to each other. 7. The stroller frame according to claim 1, characterized in that: one end of the linkage (14) is rotatably connected to the strut (13) around a sixth axis (F), and the sixth axis (F) is deviated from the second axis (B) and is parallel to the second axis (B), the other end of the linkage (14) is rotatably connected to the front leg (12) around the seventh axis (G), and the The seventh axis (G) of is offset from the first axis (A) and parallel to the first axis (A). 8. The stroller frame according to claim 1, characterized in that: the locking device (4) is provided between the strut (13) and the rear leg (12), and the locking device ( 4) The frame of the stroller can be locked in the unfolded state, and the locking device (4) includes a left rotation seat (41) provided on the connecting seat (122) and a left rotation seat (41) provided on the strut (13) and connected with The left rotation seat (41) is rotatably connected to the right rotation seat (42), and a cavity (43) is enclosed between the left rotation seat (41) and the right rotation seat (42). A spline (44) capable of sliding relative to the cavity (43) is arranged in the cavity (43), and the left rotating seat (41) and the right rotating seat (42) are provided with a spline (44) that can be engaged with the spline (44). A spline groove (45) is provided between the spline (44) and the left rotation seat (41) so that the spline (44) can simultaneously connect with the left rotation seat (41) and the right rotation seat (42) The elastic member (46) is engaged with the spline groove (45) on the upper part, and between the spline (44) and the right rotating seat (42), there is a spline (44) that can be pushed out of the right rotating seat when being pushed. The spline groove (45) on the rotating seat (42) is inserted into the pushing member (47) in the left rotating seat (41). Extension (471) in (13). 9. The stroller frame according to claim 1, characterized in that: a handle bar (5) capable of unlocking the locking device (4) during sliding is connected in the strut (13), and the A locking structure (6) capable of locking the two is provided between the handle bar (5) and the strut (13). 10. The child stroller frame according to claim 9, characterized in that: the locking structure (6) comprises a locking position (61) provided on the strut (13), and the handle bar (5) The upper connecting piece (62) that can slide laterally relative to the latching member (62) that can be engaged or disengaged from the locking position (61), and the handle bar (5) is also connected with a latching element capable of driving the latching during vertical sliding. The driving member (63) for sliding the member (62) laterally and disengaging from the locking position (61), the handle bar (5) is also rotatably connected with an operating member (64), and the operating member (64) is connected with the operating member (64). A pull cable (65) capable of pulling the driving member (63) to slide when the operating member (64) is operated is connected between the driving member (63), and between the driving member (63) and the handle bar (5) A first elastic reset member (66) capable of driving the driving member (63) to reset is connected, and a second elastic reset member (66) capable of driving the operating member (64) to reset is connected between the operating member (64) and the handle bar (5). Elastic return (67).

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