CN113306464B

CN113306464B - Child safety seat

Info

Publication number: CN113306464B
Application number: CN202110617789.5A
Authority: CN
Inventors: 许宏伟
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2022-07-29
Anticipated expiration: 2041-06-03
Also published as: CN113306464A

Abstract

The invention discloses a child safety seat which comprises a base, a backrest positioned at the rear part of the base, a head support arranged on the backrest in a vertically sliding manner, a back cushion assembly arranged on the backrest in a telescopic manner and a linkage mechanism driving the back cushion assembly to rotate and extend relative to the backrest when the head support slides downwards relative to the backrest, wherein the linkage mechanism is arranged between the head support and the back cushion assembly and is respectively connected with or matched with the head support and the back cushion assembly. The included angle between the back cushion assembly and the base of the child safety seat is adjustable, so that the child safety seat is high in comfort when being taken, can be used by infants who cannot sit upright, and is wide in application range.

Description

Child safety seat

Technical Field

The invention relates to the technical field of children products, in particular to a child safety seat.

Background

The child safety seat is specially designed for children to take a bus, is arranged in an automobile and is used for children to take when taking the bus, and can effectively improve the safety of children taking the bus.

Child safety seats generally include a base, a backrest located at the rear of the base, and a head rest arranged on the backrest, wherein the head rest can slide up and down relative to the backrest to adapt to children of different heights in order to enable the child safety seat to be suitable for children of multiple ages.

However, the angle between the backrest and the base of the child safety seat in the prior art is fixed, so that the child safety seat is not comfortable when used, and is not suitable for infants who cannot sit upright.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a child safety seat.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a child safety seat, includes the base, is located the back at the rear portion of base with can follow upper and lower direction and set up with sliding head on the back holds in the palm, child safety seat is still including can stretch out and draw back and can set up with rotating back cushion subassembly on the back with work as the head holds in the palm relatively order about when the back slides downwards the back cushion subassembly is relative the link gear of back rotation and extension, link gear sets up the head hold in the palm with between the back cushion subassembly, and respectively with the head hold in the palm with the back cushion subassembly is connected or is cooperated.

Preferably, the cushion assembly has an unfolded state and a folded state on the backrest, the cushion assembly is shortened when the cushion assembly is in the folded state, a front end surface of the cushion assembly is in the same plane as a front end surface of the backrest, the cushion assembly projects forwardly from the backrest when the cushion assembly is in the unfolded state, and the cushion assembly is extended and extended to the base.

Further, the back cushion assembly comprises an upper back cushion and a lower back cushion which is arranged on the upper back cushion in a sliding mode along the length extending direction of the upper back cushion, the upper portion of the upper back cushion is connected with the backrest in a rotating mode, when the back cushion assembly is in a folded state, the lower back cushion and the upper back cushion are folded, and when the back cushion assembly is unfolded, the lower back cushion slides downwards relative to the upper back cushion and is far away from the upper back cushion.

Further, the link gear includes clamp plate, roof and driving piece, the clamp plate with head stock fixed connection, a tip of roof with down the cushion is connected through the first axle rotation, another tip of roof with the back passes through the second axle rotation and is connected, the driving piece with the roof passes through the third axle rotation and is connected, the head stock is relative the back slides from top to bottom and can makes the clamp plate with the driving piece cooperation or throw off the cooperation.

Furthermore, when the cushion component is in the unfolded state, the pressing plate is matched with the driving part, and when the matching between the pressing plate and the driving part is released, the cushion component is in the folded state.

Furthermore, the linkage mechanism further comprises an elastic piece arranged between the backrest and the driving piece, when the head support slides downwards relative to the backrest, the driving piece can be driven to rotate relative to the backrest along a first direction, the driving piece is driven to rotate relative to the backrest along a second direction by the elastic force of the elastic piece, and the first direction is opposite to the second direction.

Furthermore, a first sliding groove extending in the vertical direction is formed in the upper cushion, and the first shaft is located in the first sliding groove and is slidably disposed along the length extending direction of the first sliding groove.

In a specific embodiment, when the cushion assembly is in the folded state, the first shaft is located at an upper end portion of the first sliding groove, and when the head rest is located at the lowest shift position on the backrest, the first shaft is located at a lower end portion of the first sliding groove.

Furthermore, a second sliding groove extending along the vertical direction is formed in the backrest, a fixing column is arranged on the driving piece, and the fixing column is located in the second sliding groove and is arranged in a sliding mode along the length extending direction of the second sliding groove.

Preferably, the head rest can slide up and down relative to the backrest at different gear positions, and the child safety seat further comprises a locking mechanism for locking the relative positions of the head rest and the backrest at different gear positions.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: when the head support slides downwards relative to the backrest from a high-grade position, the back cushion component can rotate relative to the backrest and protrudes out of the front end face of the backrest, so that an included angle formed between the back cushion component and the base is larger than that between the backrest and the base, and when a child sits in the child safety seat, the back of the child leans against the back cushion component, the child can lie on half, and the comfort of sitting can be improved; moreover, the child safety seat can be used by infants who cannot sit upright, so that the child safety seat is wider in application range.

Drawings

FIG. 1 is a perspective view of the child safety seat of the present embodiment (with the cushion assembly in an unfolded state, as viewed from the front to the rear);

FIG. 2 is a perspective view of the child safety seat of the present embodiment (with the cushion assembly in an unfolded state as viewed from the rear to the front);

Fig. 3 is a schematic perspective view of the cushion assembly and the linkage mechanism of the child safety seat of the present embodiment disposed on the fixing base (when viewed from the back to the front, the cushion assembly is in an unfolded state);

fig. 4 is a schematic perspective view of the cushion assembly and the linkage mechanism of the child safety seat of the present embodiment disposed on the fixing base (when viewed from the front to the rear, the cushion assembly is in an unfolded state);

fig. 5 is a schematic side view of the cushion assembly and the linkage mechanism of the child safety seat of the present embodiment disposed on the fixing seat (the cushion assembly is in an unfolded state);

fig. 6 is a rear view schematically illustrating the cushion assembly and the linkage mechanism of the child safety seat of the present embodiment disposed on the fixing seat (the cushion assembly is in an unfolded state);

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6;

FIG. 8 is a partially exploded view of the child safety seat of the present embodiment (with the back shell, base shell and head rest removed and the cushion assembly in an unfolded state);

FIG. 9 is a partially exploded view of the child safety seat of the present embodiment (with the cushion assembly in an unfolded state);

FIG. 10 is a schematic perspective view of the child safety seat of the present embodiment (with the cushion assembly in a collapsed state, as viewed from the front to the rear);

Fig. 11 is a perspective view of the child safety seat of the present embodiment (the cushion assembly is in a folded state when viewed from the back to the front);

fig. 12 is a schematic perspective view of the cushion assembly and the linkage mechanism of the child safety seat of the present embodiment disposed on the fixing base (when viewed from the back to the front, the cushion assembly is in a folded state);

fig. 13 is a schematic perspective view of the cushion assembly and the linkage mechanism of the child safety seat of the present embodiment disposed on the fixing base (when viewed from the front to the back, the cushion assembly is in a folded state);

fig. 14 is a schematic side view of the cushion assembly and the linkage mechanism of the child safety seat of the present embodiment disposed on the fixing seat (the cushion assembly is in a folded state);

fig. 15 is a schematic rear view of the cushion assembly and the linkage mechanism of the child safety seat of the present embodiment disposed on the fixing seat (the cushion assembly is in a folded state);

FIG. 16 is a cross-sectional view taken along line A-A of FIG. 15;

FIG. 17 is a partially exploded view of the child safety seat of the present embodiment (with the back shell, base shell, and head rest removed and the back cushion assembly in a collapsed state);

fig. 18 is a partially exploded view of the child safety seat of this embodiment (with the cushion assembly in a collapsed state).

Wherein: 1. a base housing; 21. a backrest housing; 22. a fixed seat; 221. a second chute; 222. grooving; 3. a head rest; 4. a back cushion assembly; 41. putting a back cushion; 411. a first chute; 42. a cushion is laid down; 51. pressing a plate; 52. a top plate; 53. a drive member; 531. fixing a column; 532. a fitting portion; 54. an elastic member; 61. a first shaft; 62. a second shaft; 63. and a third axis.

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the specific embodiments.

As shown in fig. 1 to 18, the child safety seat of the present invention includes a base, a backrest located at the rear of the base, and a head rest 3 provided on the backrest so as to be slidable up and down.

The base comprises a base shell 1, the backrest comprises a backrest shell 21, and the base shell 1 and the backrest shell 21 are relatively fixed.

This child seat still includes cushion subassembly 4, and cushion subassembly 4 can stretch out and draw back, and can set up on the back with rotating, and cushion subassembly 4 is used for supplying children's back and buttock to lean on.

Specifically, the fixing seat 22 is fixedly disposed in the backrest shell 21, the cushion assembly 4 includes an upper cushion 41 and a lower cushion 42 slidably disposed on the upper cushion 41 along a length extending direction of the upper cushion 41, and an upper end portion of the upper cushion 41 is rotatably connected to the fixing seat 22.

The cushion assembly 4 has an unfolded state and a folded state, and the cushion assembly 4 can be rotated relative to the fixing seat 22 to be converted between the unfolded state and the folded state.

When the cushion assembly 4 is in the folded state, the upper cushion 41 and the lower cushion 42 are closed to contract the cushion assembly 4, and the front end surface of the cushion assembly 4 and the front end surface of the backrest shell 21 are located in the same plane, that is, the included angle formed between the cushion assembly 4 and the base is the same as the included angle formed between the backrest and the base, and the included angle is approximately a right angle.

When the back cushion assembly 4 is unfolded from the folded state, the whole back cushion assembly 4 rotates forward relative to the fixed seat 22, so that the back cushion assembly 4 protrudes out of the front end surface of the backrest shell 21, and the lower back cushion 42 slides downward relative to the upper back cushion 41 and extends to the bottom seat position, namely, the upper back cushion 41 and the lower back cushion 42 are far away from each other to extend the back cushion assembly 4, at the moment, the back cushion assembly 4 inclines forwards and extends from top to bottom, and the included angle formed between the back cushion assembly 4 and the base is larger than the included angle formed between the backrest and the base.

When the cushion assembly 4 rotates at different angles relative to the fixing seat 22 in the unfolded state, the included angle formed between the cushion assembly 4 and the base is also different. When the cushion assembly 4 is in the unfolded state and the child leans on the cushion assembly 4, the child can be in a half lying state, the comfort in sitting can be improved, and the child safety seat is also suitable for the infant who cannot sit upright at this time.

This children's safety seat still includes link gear, and when the head held in the palm 3 slided from top to bottom relative to back casing 1, accessible link gear ordered about back subassembly 4 and folded up the state and expanded the state between the conversion, and the head held in the palm 3 slides from top to bottom when cushion subassembly 4 is in the expanded state in addition and still can adjust cushion subassembly 4 whole relative fixing base 22 pivoted angle, adjusts the contained angle between cushion subassembly 4 and the base promptly through link gear.

The linkage mechanism includes a pressing plate 51, a top plate 52, a driving member 53, and an elastic member 54.

One end of the top plate 52 is rotatably connected to the lower cushion 42 via a first shaft 61, and the other end of the top plate 52 is rotatably connected to the fixed base 22 via a second shaft 62. Thus, a crank-slider mechanism is formed between the fixed base 22, the upper pad 41, the lower pad 42 and the top plate 52. When the top plate 52 rotates relative to the fixed seat 22, the upper cushion 41 and the lower cushion 42 are driven to rotate relative to the fixed seat 22 at the same time through the above-mentioned crank-slider mechanism, and the lower cushion 42 is driven to slide relative to the upper cushion 41.

The driving member 53 is rotatably and slidably disposed relative to the fixing seat 22, and the driving member 53 is rotatably connected to the top plate 52 through a third shaft 63. When the driving member 53 rotates relative to the fixing seat 22, the top plate 52 is driven to rotate relative to the fixing seat 22.

The pressing plate 51 is fixedly arranged on the head rest 3, and the pressing plate 51 can be engaged with or disengaged from the driving piece 53. When the head rest 3 slides downward relative to the backrest, the pressing plate 51 is engaged with the driving member 53, and the head rest 3 slides downward continuously to drive the driving member 53 to rotate in the first direction relative to the fixing base 22.

The elastic member 54 is disposed between the driving member 53 and the fixing seat 22, and in this embodiment, the elastic member 54 is a tension spring, one end of which is disposed on the fixing seat 22, and the other end of which is disposed on the driving member 53. When the driving member 53 rotates relative to the fixing seat 22 in a first direction, the tension spring is stretched, and when the head rest 3 slides upward relative to the backrest, the elastic force of the tension spring drives the driving member 53 to rotate relative to the fixing seat 22 in a second direction, where the first direction is opposite to the second direction.

When the pressure plate 51 is engaged with the driving member 53, the head rest 3 is slid downward relative to the backrest to place the cushion assembly 4 in the unfolded state, and when the head rest 3 is slid upward relative to the backrest to disengage the engagement between the pressure plate 51 and the driving member 53, the cushion assembly 4 is placed in the folded state.

In this embodiment, the upper cushion 41 is provided with a first sliding slot 411 extending in the up-down direction, the first shaft 61 is fixedly arranged on the lower cushion 42, and the first shaft 61 is positioned in the first sliding slot 411 and slidably arranged in the length extending direction of the first sliding slot 411. When the lower cushion 42 slides relative to the upper cushion 41, the sliding of the lower cushion 42 can be guided and limited by the cooperation of the first sliding slot 411 and the first shaft 61. When the cushion assembly 4 is in the collapsed state, the first shaft 61 is located at an upper end portion of the first sliding slot 411 in the first sliding slot 411. When the cushion assembly 4 is unfolded from the folded state, the first shaft 61 slides downward along the length extending direction of the first sliding groove 411. When the head rest 3 is at the lowest shift position, the first shaft 61 is located at the lower end portion of the first link 411 in the first link 411.

The fixing seat 22 is provided with a second sliding groove 221 extending along the vertical direction, the driving member 53 is provided with a fixing column 531, and the fixing column 531 is located in the second sliding groove 221 and slidably arranged along the length extending direction of the second sliding groove 221. When the driving part 53 rotates relative to the fixing seat 22, the rotation of the driving part 53 is limited through the matching of the fixing column 531 and the second sliding groove 221.

An accommodating cavity is formed between the fixed seat 22 and the cushion assembly 4, the top plate 52 and the elastic part 54 are both located in the accommodating cavity, the pressing plate 51 is located outside the accommodating cavity and located at the rear part of the accommodating cavity, one end part of the driving part 53, which is rotationally connected with the top plate 52, is located in the accommodating cavity, a matching part 532 matched with the pressing plate 51 is arranged on the driving part 53, a slot 222 penetrating through the front end face and the rear end face of the fixed seat 22 is arranged on the fixed seat 22, the slot 222 is matched with the matching part 532, and the matching part 532 extends out of the accommodating cavity from the slot 222.

The head rest 3 can slide up and down with respect to the back housing 21 to be located at different height shift positions. The child safety seat further comprises a locking mechanism for locking the relative positions of the head rest 3 and the back shell 21, which locking mechanism can lock the head rest 3 at different height gear positions on the back shell 21. When the relative position between the head rest 3 and the back shell 21 is fixed by the locking mechanism, the position of the cushion assembly 4 on the back is also fixed. When the locking mechanism is unlocked, the head rest 3 can be slid up and down relative to the back shell 21 to adjust the height of the head rest 3 and adjust the tilt angle of the cushion assembly 4.

The specific structure of the locking mechanism and the structure for driving the locking mechanism to unlock can adopt the structure in the prior art.

The working principle of the child safety seat is as follows:

when the head rest 3 of the child safety seat is at the high-gear position on the backrest shell 21, the pressing plate 51 is disengaged from the driving member 53, and the cushion assembly 4 is in the folded state under the elastic force of the elastic member 54, that is, the front end surface of the cushion assembly 4 and the front end surface of the backrest shell 21 are located in the same plane, as shown in fig. 10 to 18, at this time, the child safety seat can be used by a larger child.

When the lock mechanism provided between the head rest 3 and the back shell 21 is unlocked, the head rest 3 can slide downward relative to the back shell 21, so that the head rest 3 is at the low position. When the head rest 3 slides downward, the pressing plate 51 is driven to synchronously slide downward until the pressing plate 51 abuts against the engaging portion 532 of the driving member 53, when the head rest 3 continues to slide downward, the driving member 53 is driven to rotate relative to the fixing seat 22 along the first direction, so that the top plate 52 rotates around the second shaft 62 in the direction away from the fixing seat 22, when the top plate 52 rotates, the lower cushion 42 is driven to slide downward relative to the upper cushion 41 and extends in the direction of the base, the first shaft 61 slides in the first sliding groove 411 in the direction close to the lower end portion of the first sliding groove 411, the cushion assembly 4 rotates forward relative to the fixing seat 22 and gradually protrudes out of the front end surface of the backrest shell 21, that is, the cushion assembly 4 is unfolded, as shown in fig. 1 to 9.

The lower the shift position at which the head rest 3 slides downward relative to the back housing 21, the greater the angle at which the cushion assembly 4 rotates forward relative to the fixing base 22. When the head rest 3 slides downward to the lowest position with respect to the back housing 21, the child can lie half way down, and the child safety seat can also be used for seating an infant who cannot sit upright.

When the head rest 3 slides upwards from the low-shift position on the backrest shell 21, the driving member 53 is driven to rotate in the second direction relative to the fixing seat 22 by the elastic force of the elastic member 54, so that the cushion assembly 4 is driven to rotate backwards relative to the fixing seat 22 until the matching between the pressing plate 51 and the driving member 53 is released, and the cushion assembly 4 is in the folded state.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. A child safety seat, includes the base, is located the back at the rear portion of base and can set up with following upper and lower direction with sliding head support on the back, its characterized in that: child safety seat is still including can stretch out and draw back and can set up with rotating cushion subassembly on the back, the cushion subassembly includes the cushion and can follow the length extending direction who goes up the cushion sets up with sliding lower cushion on the last cushion, the upper portion of going up the cushion with the back is rotated and is connected, the cushion can be relative down go up the cushion slip and make cushion subassembly extension or shorten, child safety seat still includes and works as the head holds in the palm relatively order about when the back slides down the cushion subassembly is relative the link gear of back rotation and extension, link gear sets up the head hold in the palm with between the cushion subassembly, and respectively with the head hold in the palm with the cushion subassembly is connected or is cooperated.

2. The child safety seat according to claim 1, wherein: the back cushion component is arranged on the backrest and has an unfolding state and a folding state, when the back cushion component is in the folding state, the back cushion component is shortened, the front end face of the back cushion component and the front end face of the backrest are positioned in the same plane, when the back cushion component is in the unfolding state, the back cushion component protrudes forwards out of the backrest, and the back cushion component extends to the base.

3. The child safety seat according to claim 2, wherein: when the back cushion component is in a folded state, the lower back cushion and the upper back cushion are folded, and when the back cushion component is unfolded, the lower back cushion slides downwards relative to the upper back cushion and is far away from the upper back cushion.

4. The child safety seat according to claim 1, wherein: the link gear includes clamp plate, roof and driving piece, the clamp plate with head holds in the palm fixed connection, one end of roof with down the cushion passes through the primary shaft and rotates and connect, another tip of roof with the back passes through the secondary shaft and rotates and connect, the driving piece with the roof passes through the third axle and rotates and connect, the head holds in the palm relatively the back slides from top to bottom and can make the clamp plate with the cooperation of driving piece or throw off the cooperation.

5. The child safety seat according to claim 4, wherein: when the back cushion assembly is in an unfolded state, the pressing plate is matched with the driving piece, and when the matching between the pressing plate and the driving piece is released, the back cushion assembly is in a folded state.

6. The child safety seat according to claim 4, wherein: the linkage mechanism further comprises an elastic piece arranged between the backrest and the driving piece, when the head support slides downwards relative to the backrest, the driving piece can be driven to rotate relative to the backrest along a first direction, the elastic force of the elastic piece drives the driving piece to rotate relative to the backrest along a second direction, and the first direction is opposite to the second direction.

7. The child safety seat according to claim 4, wherein: the upper back cushion is provided with a first sliding groove extending along the vertical direction, and the first shaft is positioned in the first sliding groove and can be arranged in a sliding manner along the length extending direction of the first sliding groove.

8. The child safety seat according to claim 7, wherein: when the back cushion assembly is in a folded state, the first shaft is located at the upper end part of the first sliding groove, and when the head support is located at the lowest gear position on the backrest, the first shaft is located at the lower end part of the first sliding groove.

9. The child safety seat according to claim 4, wherein: the backrest is provided with a second sliding groove extending along the vertical direction, the driving piece is provided with a fixing column, and the fixing column is located in the second sliding groove and is arranged in a sliding mode along the length extending direction of the second sliding groove.

10. The child safety seat according to claim 1, wherein: the head rest can slide up and down relative to the backrest and can be located at different gear positions, and the child safety seat further comprises a locking mechanism used for locking the relative positions of the head rest and the backrest at different gear positions.