CN214396912U

CN214396912U - Baby carriage frame

Info

Publication number: CN214396912U
Application number: CN202022855531.2U
Authority: CN
Inventors: 易立伟
Original assignee: Zhongshan Mingguan Daily Products Co ltd
Current assignee: Zhongshan Mingguan Daily Products Co ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-10-15
Anticipated expiration: 2030-12-01

Abstract

The utility model discloses a baby carriage frame convenient to it is folding can follow the expansion position and remove to folding position, including foreleg subassembly, back leg subassembly, switching device, the back leg subassembly including rear wheel, back connecting rod, preceding connecting rod, back vaulting pole, handrail, the anterior rotation of back vaulting pole connect on articulated seat, the rear portion of back vaulting pole rotate and be connected with the sliding seat, sliding seat sliding connection on the back connecting rod, sliding seat and back connecting rod between be provided with the positioner with the position locking of the two after baby carriage frame expansion, the anterior of handrail and the rear portion of back connecting rod connect through rotating unlocking device, when baby carriage frame draws in, after handrail and back connecting rod rotate certain angle each other rotation unlocking device drive positioner unblock, this baby carriage frame has automatic folding, Easy folding, smoother and more reliable folding and more durable.

Description

Baby carriage frame

[ technical field ] A method for producing a semiconductor device

The utility model relates to the field of household items, concretely relates to baby carriage frame.

[ background of the invention ]

A baby carriage frame, which is a tool carriage designed for providing convenience for outdoor activities of infants, and brings great convenience to the activities, so that the baby carriage is an indispensable product in the growth process of the infants nowadays. In order to fold the conventional baby carriage, the structure is compact, and the baby carriage can be folded quickly, and the baby carriage is generally provided with an elastic part to assist the baby carriage to fold, so that the structure of the baby carriage is complex, the volume of the baby carriage is increased, and the elastic part is easy to be subjected to mechanical fatigue after long-term use, so that the baby carriage frame is not folded tightly. In addition, when the baby carriage is pulled by the elastic part to be automatically folded, the baby carriage has uncontrollable property.

The present invention is achieved in view of the above-described disadvantages.

[ Utility model ] content

The utility model discloses the purpose is overcome prior art not enough, provides an automatic folding, folding light, folding smooth-going more reliable, more durable perambulator frame.

The utility model discloses a realize through following technical scheme:

a stroller frame convenient to fold, which can move from an unfolded position to a folded position, comprises a front leg assembly, a front wheel and a rear wheel, wherein the front leg assembly comprises a front wheel; the rear leg assembly comprises a rear wheel, and the upper parts of the rear leg assembly and the front leg assembly are respectively and rotatably connected to the hinge seat; the device comprises a rear connecting rod, wherein the middle part of the rear connecting rod is rotatably connected with a rear leg assembly; the front part of the front connecting rod is rotationally connected with the front leg assembly, and the rear part of the front connecting rod is rotationally connected with the front part of the rear connecting rod; the baby carriage comprises a rear stay bar, wherein the front part of the rear stay bar is rotatably connected to a hinged seat, the rear part of the rear stay bar is rotatably connected to a sliding seat, the sliding seat is slidably connected to a rear connecting rod, and a positioning device for locking the positions of the sliding seat and the rear connecting rod after the baby carriage frame is unfolded is arranged between the sliding seat and the rear connecting rod; the baby stroller frame is characterized by comprising a handrail, wherein the front part of the handrail is connected with the rear part of a rear connecting rod through a rotary unlocking device, and when the baby stroller frame is folded, the rotary unlocking device drives a positioning device to unlock after the handrail and the rear connecting rod rotate for a certain angle; comprises a switch device which locks the baby carriage frame in the unfolded state of the baby carriage frame.

The positioning device comprises a clamping hole formed in the sliding seat, a clamping block automatically clamped into the clamping hole after the baby carriage frame is unfolded and a driving structure capable of pushing the clamping block to be separated from the clamping hole are arranged in the rear connecting rod.

The driving structure of the baby carriage frame comprises a push block capable of sliding back and forth, a first guide surface inclined in the vertical direction is arranged on the clamping block, a second guide surface matched with the first guide surface is arranged on the push block, and the push block is pushed to move in the vertical direction to be separated from the clamping hole when sliding forwards or backwards.

The baby carriage frame comprises the baby carriage frame and is characterized in that the rotary unlocking device comprises a first rotary seat and a second rotary seat which are connected in a rotary mode, a rotary block is connected to the first rotary seat in a rotary mode, a pushing portion is arranged on the second rotary seat, the pushing portion abuts against the rotary block after the second rotary seat rotates for a certain angle relative to the first rotary seat, the rotary block is further pushed to rotate, and the rotary block is connected with the push block so that the push block is driven to slide when the rotary block rotates.

According to the baby carriage frame, the spline is arranged between the first rotating seat and the second rotating seat, the first spline groove and the second spline groove which are matched with the spline are respectively formed in the inner side of the first rotating seat and the inner side of the second rotating seat, the spline is clamped into the first spline groove and the second spline groove simultaneously to prevent the first rotating seat and the second rotating seat from rotating mutually, the spline is connected with the switching device, and the switching device controls the spline to be separated from the second spline groove.

According to the baby carriage frame, the rotating block is connected with the pushing block through the inhaul cable, and the rotating block pulls the pushing block to slide backwards through the inhaul cable.

The baby carriage frame is characterized in that the driving push block is connected with a first spring which drives the driving push block to reset after the driving push block slides backwards, and the clamping block is connected with a second spring which drives the driving push block to reset after the driving push block slides downwards.

The switch device of the baby carriage frame is provided with the safety switch.

The baby carriage frame is characterized in that the hinged seat is of a T-shaped structure, the upper part of the hinged seat protrudes towards the front side and the rear side to form a front convex part and a rear convex part, and the front leg assembly and the rear support rod are respectively connected on the front convex part and the rear convex part.

In the baby carriage frame, the middle part of the rear connecting rod is concave downwards to form an arc-shaped structure.

Compared with the prior art, the utility model discloses there is following advantage:

1. after the baby carriage frame is unlocked, the handrail is pushed forwards, the handrail and the rear connecting rod are enabled to rotate a certain angle mutually, then the unlocking device is rotated to drive the positioning device to unlock, the rear connecting rod and the handrail move downwards under the action of gravity, then the rear connecting rod rotates relative to the middle of the rear connecting rod to enable the front portion of the rear connecting rod to tilt upwards, the front connecting rod is pulled in the tilting process to further pull the front leg assembly to approach the rear leg assembly, and finally the front leg assembly, the front connecting rod, the rear connecting rod and the handrail are pulled together towards the rear leg assembly to complete folding. Because positioner just unblock after handrail and back connecting rod forward rotation certain angle, at this moment, the focus position of handrail has been located the place ahead of rotation center, handrail is folding forward under the action of gravity, and simultaneously, the back connecting rod is folding down, need not increase in addition that elastic component draws in of preceding leg subassembly and back connecting rod, reduce the volume, more importantly, the frame draws in naturally under the action of gravity, make whole process of drawing in have better ride comfort and stability, can not have the risk of tong, and can not produce mechanical fatigue because the elastic component uses repeatedly, and is more reliable and durable.

2. The utility model discloses a back leg subassembly can be drawn close more to preceding leg subassembly and back vaulting pole, and back vaulting pole and back leg subassembly disalignment rotate for the two can be folded to parallel state, is favorable to saving space.

[ description of the drawings ]

Fig. 1 is a perspective view of a stroller frame of the present invention;

fig. 2 is a schematic view of a stroller frame of the present invention;

fig. 3 is a schematic view of the frame of the stroller of the present invention in a folded state;

fig. 4 is a partial cross-sectional view of the positioning device of the present invention and a partial enlarged view thereof;

fig. 5 is an exploded view of the positioning device of the present invention;

fig. 6 is an exploded view of the rotary unlocking device of the present invention;

fig. 7 is an exploded view of the rotary unlocking device of the present invention.

[ detailed description ] embodiments

The invention will be further described with reference to the accompanying drawings:

the present invention relates to a bearing, such as "upper", "lower", "left", "right", "front", "back", etc., which is based on the orientation of the attached drawings so as to describe the relationship between each component, but does not indicate the unique or absolute position relationship between each component, and is only one of the embodiments of the present invention, and is not a limitation to the embodiments thereof.

As shown in fig. 1, a stroller frame convenient to fold comprises a front leg assembly 1, wherein the front leg assembly 1 comprises a front wheel 11; the foldable bicycle comprises a rear leg assembly 2, wherein the rear leg assembly 2 comprises a rear wheel 21, and the upper part of the rear leg assembly 2 and the upper part of a front leg assembly 1 are respectively and rotatably connected to a hinge base 3; comprises a rear connecting rod 4, the middle part of the rear connecting rod 4 is rotationally connected with the rear leg component 2; the front part of the front connecting rod 5 is rotationally connected with the front leg component 1, and the rear part of the front connecting rod 5 is rotationally connected with the front part of the rear connecting rod 4; the baby stroller frame comprises a rear stay bar 6, the front part of the rear stay bar 6 is rotatably connected to a hinged seat 3, the rear part of the rear stay bar 6 is rotatably connected to a sliding seat 7, the sliding seat 7 is slidably connected to a rear connecting rod 4, and a positioning device 40 for locking the positions of the sliding seat 7 and the rear connecting rod 4 after the baby stroller frame is unfolded is arranged between the sliding seat 7 and the rear connecting rod 4; the baby stroller frame is folded, and after the handrail 8 and the rear connecting rod 4 rotate at a certain angle, the rotary unlocking device 9 drives the positioning device 40 to unlock; a switch 80 is included to lock the stroller frame in the deployed position.

Folding principle: as shown in fig. 2 to 3, after the stroller frame is unlocked, the handrail 8 is pushed forward, so that the handrail 8 and the rear connecting rod 4 rotate at a certain angle, then the unlocking device 9 is rotated to drive the positioning device 40 to unlock, so that the rear connecting rod 4 and the handrail 8 move downward under the action of gravity, then the rear connecting rod 4 rotates relative to the middle part thereof to tilt the front part thereof upwards, the front connecting rod 5 is pulled in the tilting process to pull the front leg assembly 1 to approach the rear leg assembly 2, and finally the front leg assembly 1, the front connecting rod 5, the rear connecting rod 4 and the handrail 8 approach the rear leg assembly 2 together, so that folding is completed. Because positioner 40 just unlocks after handrail 8 and back connecting rod 4 forward rotation certain angle, at this moment, the focus position of handrail 8 has been located the place ahead of center of rotation, handrail 8 is folding forward under the action of gravity, and simultaneously, back connecting rod 4 is folding down, need not increase in addition that elastic component draws in of preceding leg subassembly 1 and back connecting rod 4, reduce the volume, and more importantly, the drawing in of frame draws in naturally under the action of gravity, make whole process of drawing in have better ride comfort and stability, can not have the risk of tong, and can not produce mechanical fatigue because the elastic component uses repeatedly, and is more reliable and durable.

As a more preferable embodiment, as shown in fig. 4 to 7, the positioning device 40 includes a latch hole 71 formed on the sliding seat 7, a latch 41 formed in the rear link 4 and automatically latched into the latch hole 71 after the stroller frame is unfolded, and a driving structure 42 capable of pushing the latch 41 out of the latch hole 71. The driving structure 42 includes a pushing block 43 capable of sliding back and forth, the latch 41 is provided with a first guide surface 411 inclined in the up-down direction, the pushing block 43 is provided with a second guide surface 431 matched with the first guide surface 411, and the pushing block 43 pushes the latch 41 to move in the up-down direction and to be disengaged from the latch hole 71 when sliding back and forth. The rotary unlocking device 9 comprises a first rotary seat 91 and a second rotary seat 92 which are connected in a rotary mode, the first rotary seat 91 is connected with a rotary block 93 in a rotary mode, the second rotary seat 92 is provided with a pushing portion 922 which is arranged on the second rotary seat 92 and abuts against the rotary block 93 and pushes the rotary block 93 to rotate after rotating for a certain angle relative to the first rotary seat 91, and the rotary block 93 is connected with the push block 43 to drive the push block 43 to slide when the rotary block 93 rotates. When the baby carriage frame is folded, the rotating block 93 can pull the pushing block 43 to slide when rotating, the pushing block 43 pushes the clamping block 41 to be separated from the clamping hole 71 in the sliding process, the sliding seat 7 can slide relative to the rear connecting rod 4, and the baby carriage frame can be folded, so that the baby carriage frame can be automatically folded after the handrail 8 and the rear connecting rod 4 rotate by a certain angle, and the structure is ingenious and reliable.

As a connection mode of the rotating block 93 and the pushing block 43: the turning block 93 may be connected to the pushing block 43 by a cable, a link, or the like, for example, the cable is connected to an eccentric position of the turning block 93, and the other end of the cable is connected to the pushing block 43.

As an embodiment of the pushing part 922 and the rotating block 93: as shown in fig. 6 and 7, the pushing portion 922 is provided with a sector-shaped protrusion, and the rotating block 93 is provided with a sector-shaped hole for accommodating the sector-shaped protrusion, so that after the pushing portion 922 rotates by a certain angle, the sector-shaped protrusion abuts against the hole wall of the sector-shaped hole to push the rotating block 93 to rotate.

As a more preferred embodiment, as shown in fig. 6 and 7, a spline 95 is provided between the first rotating seat 91 and the second rotating seat 92, the inner sides of the first rotating base 91 and the second rotating base 92 are respectively provided with a first spline groove 911 and a second spline groove 921 matching with the spline 95, the spline 95 is simultaneously snapped into the first spline groove 911 and the second spline groove 921 to block the first rotating base 91 and the second rotating base 92 from rotating with each other, the spline 95 is connected with the switch device 80, the switch device 80 controls the spline 95 to be separated from the second spline groove 921, thus, when the spline 95 is disengaged from the second spline groove 921, the first rotating base 91 and the second rotating base 92 can rotate relatively, so that the grab bar 8 and the rear connecting rod 4 rotate with each other by a certain angle, and the frame of the baby carriage can be easily folded.

As a more preferable embodiment, as shown in fig. 2 and 3, the hinge base 3 is of a "T" shape, the upper portion of the hinge base 3 protrudes towards the front side and the rear side to form a front protrusion 301 and a rear protrusion 302, the front leg assembly 1 and the rear stay 6 are respectively connected to the front protrusion 301 and the rear protrusion 302, so that the front leg assembly 2 and the rear stay 6 can be closer to the rear leg assembly 2, as shown in fig. 5, the rear stay 6 and the rear leg assembly 2 do not rotate coaxially, so that the two can be folded to a parallel state, which is beneficial to saving space.

Preferably, as shown in fig. 1, the switch device is provided with a safety switch 801, so as to prevent the stroller frame from being folded due to mistakenly touching the switch device 80.

Preferably, the middle part of the rear connecting rod 4 is concave downwards to form an arc-shaped structure, so that the force arm of the front part of the rear connecting rod 4 when being stressed can be reduced, and the front connecting rod 5 can be pulled when the front part of the rear connecting rod 4 is tilted.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. A stroller frame capable of moving from an unfolded position to a folded position, characterized by: comprises that

The front leg assembly (1), the front leg assembly (1) comprises a front wheel (11);

the rear leg assembly (2) comprises a rear wheel (21), and the upper parts of the rear leg assembly (2) and the front leg assembly (1) are respectively and rotatably connected onto the hinge seat (3);

the middle part of the rear connecting rod (4) is rotatably connected with the rear leg assembly (2);

the front part of the front connecting rod (5) is rotationally connected with the front leg assembly (1), and the rear part of the front connecting rod (5) is rotationally connected with the front part of the rear connecting rod (4);

the front part of the rear support rod (6) is rotatably connected to the hinged seat (3), the rear part of the rear support rod (6) is rotatably connected with a sliding seat (7), the sliding seat (7) is slidably connected to the rear connecting rod (4), and a positioning device (40) for locking the positions of the sliding seat (7) and the rear connecting rod (4) after the baby carriage frame is unfolded is arranged between the sliding seat (7) and the rear connecting rod (4);

the front part of the handrail (8) is connected with the rear part of the rear connecting rod (4) through a rotary unlocking device (9), and when the frame of the baby carriage is folded, the rotary unlocking device (9) drives the positioning device (40) to unlock after the handrail (8) and the rear connecting rod (4) rotate for a certain angle;

and a switch device (80) for locking the stroller frame in the unfolded state of the stroller frame.

2. The stroller frame of claim 1, wherein: the positioning device (40) comprises a clamping hole (71) formed in the sliding seat (7), a clamping block (41) which is automatically clamped into the clamping hole (71) after the frame of the baby carriage is unfolded and a driving structure (42) capable of pushing the clamping block (41) to be separated from the clamping hole (71) are arranged in the rear connecting rod (4).

3. The stroller frame of claim 2, wherein: the driving structure (42) comprises a pushing block (43) capable of sliding back and forth, a first guide surface (411) inclined in the up-down direction is arranged on the clamping block (41), a second guide surface (431) matched with the first guide surface (411) is arranged on the pushing block (43), and the pushing block (41) is pushed to move in the up-down direction to be separated from the clamping hole (71) when the pushing block (43) slides forwards or backwards.

4. A stroller frame according to claim 3, characterized in that: rotation unlocking device (9) including first rotation seat (91) and the second rotation seat (92) of rotating the connection, first rotation seat (91) on rotate and be connected with turning block (93), second rotation seat (92) on be provided with promotion portion (922), second rotation seat (92) rotate first rotation seat (91) relatively and promote portion (922) top lean on turning block (93) after rotating certain angle on, and then promote turning block (93) and rotate, turning block (93) with turning block (43) connect and then drive turning block (43) when turning block (93) rotate and slide.

5. The stroller frame of claim 4, wherein: first rotation seat (91) and second rotate and be provided with spline (95) between seat (92), the inboard of first rotation seat (91) and the inboard of second rotation seat (92) be provided with respectively with first spline groove (911) of spline (95) assorted and second spline groove (921), spline (95) go into simultaneously and then block first rotation seat (91) and second rotation seat (92) rotation in first spline groove (911) and second spline groove (921), spline (95) be connected with switching device (80), switching device (80) control spline (95) deviate from second spline groove (921).

6. The stroller frame of claim 4, wherein: the rotating block (93) is connected with the pushing block (43) through a pull cable, and the rotating block (93) pulls the pushing block (43) to slide backwards through the pull cable.

7. The stroller frame of claim 6, wherein: the driving push block (43) is connected with a first spring (44) which drives the driving push block to reset after the driving push block slides backwards, and the clamping block (41) is connected with a second spring (45) which drives the driving push block to reset after the driving push block slides downwards.

8. A stroller frame according to any of claims 1-7, characterized in that: the switch device is provided with a safety switch (801).

9. A stroller frame according to any of claims 1-7, characterized in that: articulated seat (3) be "T" style of calligraphy structure, articulated seat (3) upper portion towards front side and rear side protruding and form preceding convex part (301) and back convex part (302), preceding leg subassembly (1) and back vaulting pole (6) connect respectively on preceding convex part (301) and back convex part (302).

10. A stroller frame according to any of claims 1-7, characterized in that: the middle part of the rear connecting rod (4) is concave downwards to form an arc-shaped structure.