CN212605373U

CN212605373U - Baby carriage backrest assembly

Info

Publication number: CN212605373U
Application number: CN202021370909.3U
Authority: CN
Inventors: 唐启佑
Original assignee: Zhongshan Yuyu Baby Products Co ltd
Current assignee: Zhongshan Yuyu Baby Products Co ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-02-26
Anticipated expiration: 2030-07-13

Abstract

The utility model discloses a baby carriage backrest component, which comprises a seat part (1) and a backrest part (2) which can rotate and fold relative to the seat part (1), the front side of the seat part (1) is connected with a front handrail (3) which can rotate and fold relative to the seat part, a locking device which can lock the unfolding state of the front handrail (3) is arranged between the seat part (1) and the front handrail (3), the locking device comprises a locking groove (41) arranged at the lower end of the front handrail (3), a bayonet pin component (42) which can slide back and forth and is clamped or separated with the bayonet lock groove (41) is arranged in the seat part (1), a traction assembly (43) which can pull the bayonet pin assembly (42) to separate the bayonet pin assembly (42) from the locking groove (41) when the backrest part (2) rotates and folds relative to the seat part (1) is arranged between the bayonet pin assembly (42) and the backrest part (2). The utility model discloses simple structure, convenient operation.

Description

Baby carriage backrest assembly

[ technical field ] A method for producing a semiconductor device

The utility model relates to a baby carriage backrest assembly.

[ background of the invention ]

Strollers have become an indispensable product in the growth process of infants. Current strollers typically include a frame and a seat assembly removably attached to the frame, and current seat assemblies typically include a seat portion, a back portion, and a front armrest attached to the seat portion, but current seat assemblies require separate manipulation of the back portion and the front armrest to collapse the two when folded. It is inconvenient to operate.

Therefore, the present invention is based on the above disadvantages.

[ Utility model ] content

The utility model aims at overcoming the defects of the prior art and providing a baby carriage backrest component with simple structure and convenient operation.

The utility model discloses a realize through following technical scheme:

a stroller seat back assembly, characterized by: the seat part comprises a seat part 1 and a backrest part 2 which can be rotated and folded relative to the seat part 1, wherein the front side of the seat part 1 is connected with a front armrest 3 which can be rotated and folded relative to the seat part 1, a locking device which can lock the unfolding state of the front armrest 3 is arranged between the seat part 1 and the front armrest 3, the locking device comprises a locking groove 41 arranged at the lower end of the front armrest 3, a bayonet component 42 which can slide back and forth and is clamped or separated with the locking groove 41 is arranged in the seat part 1, and a traction component 43 which can pull the bayonet component 42 to separate the bayonet component 42 from the locking groove 41 when the backrest part 2 is rotated and folded relative to the seat part 1 is arranged between the bayonet component 42 and the backrest part 2.

The stroller seat back assembly as described above, characterized in that: the backrest part 2 comprises a connecting seat 21 which can be rotatably connected with the rear side of the seat part 1, a clamping device is arranged between the connecting seat 21 and the seat part 1, the traction assembly 43 comprises a cable 431 arranged in the seat part 1, one end of the cable 431 is connected with the clamping pin assembly 42, the other end of the cable 431 is connected with a transverse column 432, an arc-shaped groove 433 which is used for inserting the transverse column 432 and driving the cable 431 to move backwards when the connecting seat 21 rotates is arranged on the connecting seat 21, and a first return spring 44 is further arranged in the seat part 1, wherein one end of the first return spring abuts against the clamping pin assembly 42, and the other end of the first return spring abuts against the seat part 1 and can push the clamping pin assembly 42 to return.

The stroller seat back assembly as described above, characterized in that: the bayonet unit 42 includes a bayonet sleeve 421 which is arranged in the seat part 1 and can slide back and forth, the pull rope 431 is connected to the bayonet sleeve 421, one end of the first return spring 44 is abutted against the bayonet sleeve 421, a bayonet column 422 which can slide relative to the bayonet sleeve 421 and can be pulled by the bayonet sleeve 421 to slide back when the bayonet sleeve 421 slides back is connected to the bayonet sleeve 421, the bayonet column 422 is matched with the bayonet groove 41, and a second return spring 423 is arranged between the bayonet column 422 and the bayonet sleeve 421.

The stroller seat back assembly as described above, characterized in that: the center of gravity of the front armrest 3 is located on the front side of the rotation axis of the front armrest 3 and the seat unit 1.

The stroller seat back assembly as described above, characterized in that: a third return spring 5 that is compressed and deformed when the front arm rest 3 is folded and can drive the front arm rest 3 to rotate and unfold when the backrest 2 rotates and unfolds is further provided between the seat portion 1 and the lower end of the front arm rest 3.

The stroller seat back assembly as described above, characterized in that: the connecting seat 21 is connected with a backrest rod 22.

The stroller seat back assembly as described above, characterized in that: the backrest rod 22 is provided with an operating member 6 which is connected with the clamping device and can unlock the clamping device.

The stroller seat back assembly as described above, characterized in that: the front side of the seat part 1 is also connected with a leg supporting rod 7.

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

1. the utility model discloses when the seat was leaned on the subassembly and is folded, rotate back portion and just can break away from through the card locked groove on traction assembly drive bayonet catch subassembly and the preceding handrail, handrail and seat portion unblock before just can realizing during operation back portion, and just can touch through back portion when continuing to rotate back portion and press preceding handrail and make preceding handrail rotate folding, perhaps preceding handrail rotates because of self gravity and falls down folding behind preceding handrail and the seat portion unblock. The whole seat back assembly does not need to operate the seat back part and the front handrails independently when being folded, the front handrails can be folded in a linkage manner only by operating the seat back part and enabling the seat back part to rotate, and the folding operation of the seat back assembly is simpler and quicker.

2. The utility model discloses the subassembly is leaned on to the seat when folding, and back portion is when rotating, and the cell wall of the arc wall on it promotes horizontal post for the cable moves backward and stimulates the bayonet lock cover, and first reset spring is compressed this moment, and at the in-process of bayonet lock cover backward movement, the bayonet lock cover stimulates the bayonet lock post to move backward again, makes the bayonet lock post break away from and the unblock with the card locked groove on the preceding handrail, and at this in-process, second reset spring between bayonet lock post and the bayonet lock cover also receives the compression. After the locking device is unlocked, the backrest part continues to rotate to press the front handrail, so that the front handrail falls down and is folded. And when needs expand back and preceding handrail, upwards rotate back, first reset spring bulldozes the bayonet lock subassembly forward this moment, because preceding handrail does not upwards rotate and expands, bayonet lock subassembly and card locked groove can not the block, when the back expandes to target in place, pull preceding handrail and upwards rotate, when the card locked groove on the present handrail aligns with the bayonet lock subassembly, first reset spring promotes the bayonet lock cover and moves forward, and second reset spring promotes the bayonet lock post card and goes into in the card locked groove, realizes the locking of preceding handrail. The whole structure is simple, and the clamping is flexible. The safety handle is characterized in that the clamping pin assembly is provided with a second return spring, a clamping pin sleeve and a clamping pin column structure which can slide relatively, when the seat leaning assembly is unfolded, the clamping pin column can be still ensured to be smoothly clamped with the clamping lock groove when the clamping pin sleeve slides unsmoothly, the front handle can be ensured to be normally locked, and the reliability of products is ensured.

3. The utility model discloses simple structure, convenient operation is fit for popularizing and applying.

[ description of the drawings ]

FIG. 1 is a perspective view of the present invention;

fig. 2 is one of exploded views of components of the present invention;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is an enlarged view at B in FIG. 2;

fig. 5 is a second exploded view of the components of the present invention;

fig. 6 is a third exploded view of the components of the present invention.

[ detailed description ] embodiments

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

as shown in fig. 1 to 6, a stroller backrest assembly comprises a seat part 1 and a backrest part 2 capable of rotating and folding relative to the seat part 1, wherein a front armrest 3 capable of rotating and folding relative to the seat part 1 is connected to the front side of the seat part 1, a latch device capable of locking the unfolded state of the front armrest 3 is arranged between the seat part 1 and the front armrest 3, the latch device comprises a latch groove 41 arranged at the lower end of the front armrest 3, a bayonet pin assembly 42 capable of sliding back and forth and engaging with or disengaging from the latch groove 41 is arranged in the seat part 1, and a pulling assembly 43 capable of pulling the bayonet pin assembly 42 to disengage the bayonet pin assembly 42 from the latch groove 41 when the backrest part 2 rotates and folds relative to the seat part 1 is arranged between the bayonet pin assembly 42 and the backrest part 2. When the seat back assembly is folded, the backrest part 2 can be rotated to drive the latch pin assembly 42 to be separated from the latch groove 41 on the front armrest 3 through the traction assembly 43, the front armrest 3 can be unlocked from the seat part 1 when the backrest part 2 is operated, the front armrest 3 can be rotated and folded by pressing the front armrest 3 through the backrest part 2 when the backrest part 2 is continuously rotated, or the front armrest 3 can be rotated and folded due to self gravity after the front armrest 3 is unlocked from the seat part 1. The whole seat back assembly does not need to operate the seat back part 2 and the front handrail 3 independently when being folded, the front handrail 3 can be folded in a linkage manner only by operating the seat back part 2 and enabling the seat back part 2 to rotate, and the folding operation of the seat back assembly is simpler and faster.

As shown in fig. 2 to 6, the backrest 2 includes a connecting base 21 rotatably connected to the rear side of the seat 1, a locking device is disposed between the connecting base 21 and the seat 1, the traction assembly 43 includes a cable 431 disposed in the seat 1, one end of the cable 431 is connected to the latch assembly 42, the other end of the cable is connected to a transverse column 432, an arc-shaped groove 433 is disposed in the connecting base 21 for inserting the transverse column 432 and driving the cable 431 to move backward when the connecting base 21 rotates, and a first return spring 44 is disposed in the seat 1, one end of the first return spring abuts against the latch assembly 42, and the other end of the first return spring abuts against the seat 1 and pushes the latch assembly 42 to return. When the seat back assembly is folded, the clamping device between the seat part 1 and the connecting seat 21 is unlocked, so that the seat back part 2 can be folded forwards in a rotating manner, and the clamping device can adopt a traditional gear and tooth socket clamping structure, which is not described again. When the backrest 2 rotates forwards, the walls of the arc-shaped slots 433 push the transverse posts 432, so that the pull cable 431 pulls the latch assembly 42 backwards, so that the latch assembly 42 is disengaged from the latch slot 41 on the front armrest 3, the front armrest 3 is unlocked from the seat 1, and the backrest 2 which continues to rotate can touch the front armrest 3 to make the front armrest 3 rotate and fold. When the seat backrest assembly is unfolded, the backrest part 2 is rotated upwards, the transverse column 432 slides relative to the connecting seat 21 in the arc-shaped groove 433, after the backrest part 2 is unfolded, the front handrail 3 is pulled upwards, and when the clamping groove 41 is aligned with the clamping pin assembly 42, the first return spring 44 pushes the clamping pin assembly 42 to return, so that the clamping pin assembly 42 is clamped with the clamping groove 41 again. The whole structure is simple, and the operation process is very simple and rapid.

As shown in fig. 5 and 6, the latch assembly 42 includes a latch sleeve 421 disposed in the seat 1 and capable of sliding back and forth, the pull cable 431 is connected to the latch sleeve 421, one end of the first return spring 44 abuts against the latch sleeve 421, a latch post 422 capable of sliding relative to the latch sleeve 421 and capable of sliding back by being pulled by the latch sleeve 421 when the latch sleeve 421 slides back is connected to the latch sleeve 421, the latch post 422 is engaged with the latch groove 41, and a second return spring 423 is disposed between the latch post 422 and the latch sleeve 421. When the seat backrest assembly is folded, the backrest part 2 rotates to enable the pull cable 431 to move backwards to pull the bayonet sleeve 421, at the moment, the first return spring 44 is compressed, in the process that the bayonet sleeve 421 moves backwards, the bayonet sleeve 421 pulls the bayonet column 422 to move backwards, the bayonet column 422 is separated from the locking groove 41 on the front armrest 3 to be unlocked, and in the process, the second return spring 423 between the bayonet column 422 and the bayonet sleeve 421 is also compressed. After the latch device is unlocked, the backrest 2 continues to rotate and presses the front armrest 3, so that the front armrest 3 is folded down. When the backrest part 2 and the front handrail 3 need to be unfolded, the backrest part 2 is rotated upwards, at the moment, the first return spring 44 pushes the bayonet pin assembly 42 forwards, the bayonet pin assembly 42 cannot be clamped with the clamping and locking groove 41 because the front handrail 3 is not rotated upwards and unfolded, when the backrest part 2 is unfolded in place, the front handrail 3 is pulled to rotate upwards, once the clamping and locking groove 41 on the front handrail 3 is aligned with the bayonet pin assembly 42, the bayonet pin 422 is clamped into the clamping and locking groove 41, and the locking of the front handrail 3 is realized. The whole structure is simple, and the clamping is flexible. It is particularly important that the latch assembly 42 is configured to have the second return spring 423 and the latch sleeve 421 and the latch post 422 that can slide relatively, so that when the seat back assembly is unfolded, the latch post 422 can still be smoothly engaged with the latch groove 41 when the latch sleeve 421 slides unsmoothly, the front armrest 3 can be normally locked, and the product reliability is ensured.

As shown in fig. 1, the center of gravity of the front armrest 3 is located on the front side of the rotational axis of the front armrest 3 and the seat portion 1, so that the front armrest 3 can be more easily rotated and folded.

As shown in fig. 3 to 6, a third return spring 5 that is compressed and deformed when the front arm rest 3 is folded and can drive the front arm rest 3 to rotate and expand when the backrest 2 rotates and expands is further provided between the seat portion 1 and the lower end of the front arm rest 3. When the front handrail 3 is folded, the third return spring 5 is in a compressed state, and when the backrest part 2 no longer touches the front handrail 3, the third return spring 5 can drive the front handrail 3 to rotate and reset, so that the front handrail 3 can be automatically unfolded.

As shown in fig. 1, a back lever 22 is connected to the connecting base 21.

As shown in fig. 1, the backrest rod 22 is provided with an operating member 6 connected with the engaging device to unlock the engaging device, and the operating member 6 may be a conventional operating member structure, which is not described herein again.

As shown in fig. 1, a leg support bar 7 is connected to the front side of the seat part 1, so that the infant can be seated more comfortably.

Claims

1. A stroller seat back assembly, characterized by: including seat portion (1) and can rotate folding back portion (2) relatively seat portion (1), seat portion (1) front side be connected with can rotate folding preceding handrail (3) relatively it, seat portion (1) and preceding handrail (3) between be equipped with the kayser device that can lock preceding handrail (3) state of unfolding, kayser device including establishing kayser groove (41) of preceding handrail (3) lower extreme, seat portion (1) in be equipped with bayonet lock subassembly (42) that can slide around and block with kayser groove (41) or break away from, bayonet lock subassembly (42) and back portion (2) between be equipped with and can stimulate bayonet lock subassembly (42) and make bayonet lock subassembly (42) and kayser groove (41) break away from draw subassembly (43) when back portion (2) relatively seat portion (1) rotate folding.

2. The stroller seat assembly of claim 1, wherein: backrest (2) including connecting seat (21) that can rotate the connection with seat portion (1) rear side, connecting seat (21) and seat portion (1) between be equipped with clamping device, pull subassembly (43) including establishing cable (431) in seat portion (1), cable (431) one end be connected with bayonet lock subassembly (42), the other end is connected with horizontal post (432), connecting seat (21) on be equipped with supply horizontal post (432) to insert and can drive cable (431) arc wall (433) backward movement when connecting seat (21) rotates, seat portion (1) in still be equipped with one end and lean on bayonet lock subassembly (42), the other end supports and leans on seat portion (1) and can promote first reset spring (44) that bayonet lock subassembly (42) reset.

3. The stroller seat back assembly of claim 2, wherein: the bayonet lock component (42) comprises a bayonet lock sleeve (421) which is arranged in the seat part (1) and can slide forwards and backwards, the pull cable (431) is connected to the bayonet lock sleeve (421), one end of the first return spring (44) abuts against the bayonet lock sleeve (421), a bayonet lock column (422) which can slide relative to the bayonet lock sleeve and can be pulled by the bayonet lock sleeve (421) to slide backwards when the bayonet lock sleeve (421) slides backwards is connected to the bayonet lock sleeve (421), the bayonet lock column (422) is matched with the bayonet lock groove (41), and a second return spring (423) is arranged between the bayonet lock column (422) and the bayonet lock sleeve (421).

4. A stroller seat back assembly according to claim 1, 2 or 3, wherein: the gravity center of the front handrail (3) is positioned at the front side of the rotation axes of the front handrail (3) and the seat part (1).

5. A stroller seat back assembly according to claim 1, 2 or 3, wherein: a third return spring (5) which is compressed and deformed when the front handrail (3) is folded and can drive the front handrail (3) to rotate and unfold when the backrest (2) rotates and unfolds is further arranged between the seat part (1) and the lower end of the front handrail (3).

6. The stroller seat back assembly of claim 2, wherein: the connecting seat (21) is connected with a backrest rod (22).

7. The stroller seat assembly of claim 6, wherein: the backrest rod (22) is provided with an operating piece (6) which is connected with the clamping device and can unlock the clamping device.

8. The stroller seat back assembly of claim 2, wherein: the front side of the seat part (1) is also connected with a leg support rod (7).