CN210191232U

CN210191232U - Headrest height and side wing width synchronous adjusting mechanism of child safety seat

Info

Publication number: CN210191232U
Application number: CN201920606015.0U
Authority: CN
Inventors: Jianhong Qian; 钱建洪; Hangjian Qiu; 裘杭建; Kaixin Chen; 陈凯新
Original assignee: Hangzhou Yue Meng Industrial Co Ltd
Current assignee: Butong safety technology (Ningbo) Co.,Ltd.
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-03-27
Anticipated expiration: 2029-04-29

Abstract

The utility model relates to a children's safety seat field discloses children's safety seat headrest height and flank width synchronous regulation mechanism, it includes first linking arm, the second linking arm, first support arm, the second support arm, connecting piece and guide, first support arm and second support arm pass through the connecting piece and articulate each other, be provided with the direction passageway on the guide, first support arm and second support arm drive the connecting piece along direction passageway ascending or downward synchronous motion when upwards or the downstream, first support arm and second support arm rotate around the connecting piece and make the contained angle grow between first support arm and the second support arm or diminish, realize the relative or the relative motion of first linking arm and second linking arm. The utility model discloses a sliding fit of connecting piece and guide makes the grow or the diminish of contained angle between first support arm and the second support arm, and whole adjustment mechanism simple structure is compact, and it is convenient to adjust, and space utilization is high, and is with low costs, and the installation is convenient with the maintenance, long service life.

Description

Headrest height and side wing width synchronous adjusting mechanism of child safety seat

Technical Field

The utility model relates to a seat field has especially related to children's safety seat headrest height and flank width synchronous regulation mechanism.

Background

As children grow, the height of the headrest and the shoulder straps of the safety seat needs to be adjusted to accommodate different body heights and body sizes. The most way of dealing with children of different ages that current children's safety seat adopted is, adopt the integral type seat, set up the cushion in the seat, adopt the mode that the seat adds the cushion to the less infant of size, to the great children of size, then remove the cushion, take in the integral type seat, do not have flank automatically regulated mechanism, the installation need be disassembled to the flank height, also some can be along with the mechanism of headrest altitude mixture control automatically regulated flank height, but can not adjust the width space between the inside flank of seat, moreover, the structure is complicated, the operation is inconvenient. The position adjustment of the headrest and the side wings of the child safety seat not only affects the comfort of the child, but also affects the life safety of the child. Therefore, the child safety seat needs to be provided with an adjusting mechanism capable of synchronously adjusting the width of the side wings and the height of the headrest so as to adapt to children of different ages and sizes.

Chinese patent No. CN207631041U discloses a synchronous adjustment structure for child safety seat, which is in the left and right bilateral symmetry of backrest body is equipped with two transverse sliding chutes, the guide sliding installation that two transverse connection arms correspond in two transverse sliding chutes, and through bilateral symmetry's the guide channel who offers two sets of vertical extensions on the backrest body, these two sets of guide channel set up and are close to gradually from last slope to down along the backrest body be fixed with respectively on the connecting arm with correspond guide channel direction sliding fit's slider, realize the width regulation of seat centre gripping arm. But it is with high costs to have its back of this adjustment mechanism to set up of two sets of guide way on the body, back-up plate stability is not good, the structure is complicated, the installation is maintained the maintenance inconvenient, the regulation mode is comparatively complicated relatively, whole mechanism structural stability is not strong, easily produce and rock, the slip smoothness nature of slider is not good, guide way's the equal atress of left and right sides lateral wall when the slider slides along guide way, the jamming phenomenon appears easily, and control the lateral wall and easily wear and tear, when a lateral wall goes wrong, just unable normal work of whole mechanism, the fault rate of product has been increased.

Patent No. CN207697551U discloses a headrest height control and flank width adjustment mechanism of children's safety seat, and it includes the seat, the upper portion of seat be equipped with the headrest, the both sides end of seat be equipped with the flank respectively, seat and headrest between adjust from top to bottom through headrest height control assembly, flank and seat between adjust from top to bottom through width control assembly. The adjusting mechanism has the advantages of convenient disassembly and compact structure. But in the in-service use process, the product processing technology is more complicated for seting up of its back-up plate spout, and it is comparatively inconvenient to maintain, has still occupied the more space of back-up plate, and the joint strength of spout and guide is little, and the regulation precision is little, and the motion smoothness nature and the stability of flank are relatively poor simultaneously, and the security is not strong.

SUMMERY OF THE UTILITY MODEL

The utility model discloses it is complicated to children's safety seat synchronous adjustment mechanism structure among the prior art, whole mechanism stability is not strong, flank motion smoothness nature is not good enough, the fault rate is high, the security is not strong, set up the spout on the back-up plate, make the intensity reduction of back-up plate, the processing technology of back-up plate is complicated, it is all comparatively inconvenient with the maintenance, shortcoming such as with high costs, a simple structure is provided and is compact, it is convenient to adjust, whole mechanism joint strength is high, the security is good, and is with low costs, flank motion smoothness nature is good, install and maintain the convenient children's safety seat headrest height of maintenance and flank width synchronous adjustment mechanism.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve: a headrest height and flank width synchronous adjusting mechanism of a child safety seat comprises a first connecting arm on the left side and a second connecting arm on the right side, and further comprises a first support arm hinged with the first connecting arm, a second support arm hinged with the second connecting arm, a connecting piece used for connecting the first support arm and the second support arm, and a guide piece fixed on a seat base, wherein the first support arm and the second support arm are hinged with each other through the connecting piece, a guide channel is arranged on the guide piece, the connecting piece is in sliding fit with the guide channel, the guide channel comprises an upper limit part and a lower limit part used for limiting the stroke of the connecting piece, the connecting piece is driven to move upwards or downwards synchronously along the guide channel when the first support arm and the second support arm move upwards or downwards, when the connecting piece moves upwards and abuts against the upper limit part or moves downwards and abuts against the lower limit part, the first support arm and the second support arm rotate around the connecting piece to enable the included angle between the first support arm and the, thereby realizing the relative or opposite movement of the first connecting arm and the second connecting arm. The first connecting arm and the second connecting arm move upwards or downwards to drive the first supporting arm and the second supporting arm to move upwards or downwards, the first supporting arm and the second supporting arm drive the connecting piece to move upwards or downwards along the guide channel, and when the connecting piece moves upwards to abut against the upper limit part or moves downwards to abut against the lower limit part, the first supporting arm and the second supporting arm rotate around the connecting piece to enable an included angle between the first supporting arm and the second supporting arm to be increased or decreased, so that the first connecting arm and the second connecting arm move relatively or relatively; the first support arm and the second support arm are hinged to each other through the connecting piece, the connecting piece is in sliding fit with the guide channel, the connecting stability is good, the structure is compact, safety and reliability are achieved, the cost is low, and adjustment is convenient.

Preferably, the first arm and the second arm are symmetrically distributed on two sides of the guide channel. The synchronous movement of the first support arm and the second support arm is facilitated, and the movement coordination of the first support arm and the second support arm is ensured.

Preferably, the upper limit portion is an upper end inner wall of the guide passage, and the lower limit portion is a lower end inner wall of the guide passage. The upper limit part and the lower limit part have simple structures and low cost.

Preferably, the upper limit part and the lower limit part are both limit strips fixedly installed on the guide channel. Spacing firm, spacing position can be according to user's demand fixed mounting on the direction passageway.

Preferably, the guide channel is arranged along the vertical direction, and the guide channel is a guide groove or a guide opening.

Preferably, the guide channel is a guide opening, a first mounting opening is formed in one end of the first support arm, a second mounting opening is formed in one end of the second support arm, and one end of the connecting piece sequentially penetrates through the first mounting opening, the guide opening and the second mounting opening to be fixed or sequentially penetrates through the second mounting opening, the guide opening and the first mounting opening to be fixed. The other end of the connecting piece can be matched with a nut to prevent the second support arm or the first support arm from falling off after fixation. First support arm and second support arm simple structure, guide way are the direction mouth, and processing is convenient, and connecting piece and direction mouth cooperation, simple to operate connect firmly, and the motion harmony and the smoothness nature of first support arm and second support arm are good.

Preferably, the guide channel is a guide groove, a first mounting opening is formed in one end of the first support arm, a second mounting opening is formed in one end of the second support arm, and one end of the connecting piece sequentially penetrates through the first mounting opening and the second mounting opening and then is connected into the guide groove or sequentially penetrates through the second mounting opening and the first mounting opening and then is connected into the guide groove. The first support arm and the second support arm are hinged with the guide piece through the connecting piece, so that the space occupation is small, and the structure is compact.

Preferably, the first support arm and the second support arm are symmetrically hinged to the first connecting arm and the second connecting arm respectively through pin shafts. The synchronous movement and the movement coordination of the first support arm and the second support arm are ensured, and the safety intensity of the whole adjusting mechanism is increased.

Preferably, still include the seat base, the both sides of seat base are provided with left ramus and right ramus respectively, are provided with the mounting between left ramus and the right ramus, and the both ends card of mounting are established in the inboard of left ramus and right ramus respectively, and the middle part at the mounting is fixed to the one end of guide, and the guide is vertical to be set up. The lower extreme of guide passes through the mounting to be fixed on the seat base, and guide simple structure, with low costs, and the space occupies for a short time.

Preferably, the utility model also comprises a left side wing and a right side wing, the headrest, the driving device who slides the board and be used for driving headrest up-and-down motion that link firmly with the headrest, the left side wing links firmly with first linking arm, the right flank links firmly with the second linking arm, the both sides of slide board all are provided with the sliding sleeve, the slide board overlaps through the sliding sleeve and is established on left branch bone and right branch bone and reciprocates along left branch bone and right branch bone, all be provided with sliding assembly between first linking arm and second linking arm and the slide board, sliding assembly includes lateral slipping groove and lateral slipping piece, lateral slipping piece imbeds in the lateral slipping groove and can control about relative lateral slipping groove, one of lateral slipping groove and lateral slipping piece sets up on first linking arm and second linking arm, the other sets up on the slide board, driving device's one end is connected with the headrest, driving device's the other end is connected with the seat base. The driving device drives the headrest to move up and down to adjust the height of the headrest, the headrest drives the sliding plate to move up and down, when the headrest drives the sliding plate to move up or down, the sliding plate drives the first connecting arm and the second connecting arm to move up or down synchronously through the sliding assembly, and meanwhile, the first connecting arm and the second connecting arm realize the left and right movement of the relative sliding plate through the relative left and right movement of the transverse sliding block and the transverse sliding groove; when the slide board drives first linking arm and second linking arm up-and-down motion, first linking arm and second linking arm drive first support arm and second support arm and carry out the up-and-down motion, first support arm and second support arm drive the connecting piece along guide way up-and-down motion, when the connecting piece upward movement contradicts to upper limit portion or downward movement and contradicts to lower limit portion, first support arm and second support arm rotate around the connecting piece and make the contained angle grow between first support arm and the second support arm or diminish, thereby realize the relative or relative motion of first linking arm and second linking arm, first linking arm and second linking arm pass through sliding assembly and realize moving about on the slide board simultaneously, first linking arm and second linking arm drive left flank and right flank each other and be close to or keep away from, thereby realize the synchro-adjusting of the height and the width of left flank and right flank.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect: the utility model discloses a first linking arm is articulated with first support arm, the second linking arm is articulated with the second support arm, and the sliding fit of connecting piece and guide makes the grow or the diminish of contained angle between first support arm and the second support arm, it carries out relative or motion in opposite directions to drive first linking arm and second linking arm, thereby realize the regulation of left flank and right flank, the width regulation of left flank and right flank no longer relies on the back plate, the structural strength of whole seat has been strengthened, and the joint strength of first support arm and second support arm is high, the motion smoothness nature is good, whole adjustment mechanism simple structure is compact, it is convenient to adjust, space utilization is high, and is with low costs, the installation is convenient with the maintenance, long service life.

Drawings

Fig. 1 is a schematic structural view of a headrest height and side wing width synchronous adjusting mechanism of a child safety seat.

FIG. 2 is a schematic view of the connection of the first arm, the second arm, the connecting member, and the guiding member.

Fig. 3 is a schematic view of the structure of the guide member in embodiment 2.

Fig. 4 is a schematic view of the structure of the guide member in embodiment 3.

FIG. 5 is a schematic structural view of the first arm.

FIG. 6 is a schematic diagram of a second arm.

Fig. 7 is a schematic view of the connection of the headrest to the drive device.

The names of the parts indicated by the numerical references in the drawings are as follows: 1-first connecting arm, 11-first supporting arm, 111-first installing opening, 12-left flank, 2-second connecting arm, 21-second supporting arm, 211-second installing opening, 22-right flank, 3-connecting piece, 4-guiding piece, 41-guiding channel, 411-upper limiting part, 412-lower limiting part, 5-seat base, 51-left supporting bone, 52-right supporting bone, 53-fixing piece, 6-headrest, 61-sliding plate, 611-sliding sleeve, 62-driving device, 7-transverse sliding groove and 8-transverse sliding block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

The application is an improvement on the prior patent of the company, namely, the utility model patent CN201721579368.3 which is patented as Hangzhou Lele industry Co Ltd, namely, the improvement on a headrest height adjusting and side wing width adjusting mechanism of a child safety seat.

Example 1

As shown in the figure, the headrest height and side wing width synchronous adjusting mechanism of the child safety seat in the present embodiment, which uses the up, down, left and right directions shown in fig. 1 as the references, includes a first connecting arm 1 on the left side and a second connecting arm 2 on the right side, further includes a first arm 11 hinged to the first connecting arm 1, a second arm 21 hinged to the second connecting arm 2, a connecting member 3 for connecting the first arm 11 and the second arm 21, and a guiding member 4 fixed on the seat base 5, the first arm 11 and the second arm 21 are hinged to each other through the connecting member 3, the guiding member 4 is provided with a guiding channel 41, the connecting member 3 is slidably engaged with the guiding channel 41, the guiding channel 41 includes an upper limit portion 411 and a lower limit portion 412 for limiting the stroke of the connecting member 3, when the first arm 11 and the second arm 21 move up or down, the connecting member 3 is driven to move up or down synchronously along the guiding channel 41, when the connecting member 3 moves upwards to abut against the upper limiting portion 411 or moves downwards to abut against the lower limiting portion 412, the first arm 11 and the second arm 21 rotate around the connecting member 3 to make the included angle between the first arm 11 and the second arm 21 larger or smaller, so that the relative or opposite movement of the first connecting arm 1 and the second connecting arm 2 is realized. The first connecting arm 1 and the second connecting arm 2 move upwards or downwards to drive the first supporting arm 11 and the second supporting arm 21 to move upwards or downwards, the first supporting arm 11 and the second supporting arm 21 drive the connecting piece 3 to move upwards or downwards along the guide channel 41, and when the connecting piece 3 moves upwards and collides with the upper limiting part 411 or moves downwards and collides with the lower limiting part 412, the first supporting arm 11 and the second supporting arm 21 rotate around the connecting piece 3 to increase or decrease the included angle between the first supporting arm 11 and the second supporting arm 21, so that the relative or opposite movement of the first connecting arm 1 and the second connecting arm 2 is realized; the first support arm 11 and the second support arm 21 are hinged to each other through the connecting piece 3, the connecting piece 3 is in sliding fit with the guide channel 41, and the connecting device is good in connecting stability, compact in structure, safe, reliable, low in cost and convenient to adjust.

The first arm 11 and the second arm 21 are symmetrically distributed on both sides of the guide channel 41. The synchronous movement of the first arm 11 and the second arm 21 is facilitated, and the movement coordination of the first arm 11 and the second arm 21 is ensured.

The first support arm 11 and the second support arm 21 are symmetrically hinged on the first connecting arm 1 and the second connecting arm 2 through pin shafts respectively. The synchronous movement and the movement coordination of the first support arm 11 and the second support arm 21 are ensured, and the safety intensity of the whole adjusting mechanism is increased.

Still include seat base 5, seat base 5's both sides are provided with left ramus 51 and right ramus 52 respectively, are provided with mounting 53 between left ramus 51 and the right ramus 52, and the both ends of mounting 53 are blocked respectively and are established in the inboard of left ramus 51 and right ramus 52, and the middle part at mounting 53 is fixed to the one end of guide 4, and guide 4 is vertical to be set up. The lower end of the guide 4 is fixed on the seat base 5 through the fixing piece 53, and the guide 4 has simple structure, low cost and small occupied space.

The left side wing 12, the right side wing 22, the headrest 6, a sliding plate 61 fixedly connected with the headrest 6 and a driving device 62 for driving the headrest 6 to move up and down are further included, the left side wing 12 is fixedly connected with the first connecting arm 1, the right side wing 22 is fixedly connected with the second connecting arm 2, sliding sleeves 611 are respectively arranged on two sides of the sliding plate 61, the sliding plate 61 is sleeved on the left supporting bone 51 and the right supporting bone 52 through the sliding sleeves 611 and moves up and down along the left supporting bone 51 and the right supporting bone 52, sliding assemblies are respectively arranged between the first connecting arm 1 and the second connecting arm 2 and the sliding plate 61, each sliding assembly comprises a transverse sliding groove 7 and a transverse sliding block 8, the transverse sliding block 8 is embedded in the transverse sliding groove 7 and can move left and right relative to the transverse sliding groove 7, one of the transverse sliding groove 7 and the transverse sliding block 8 is arranged on the first connecting arm 1 and the second connecting arm 2, the other is arranged on the sliding plate 61, in the embodiment, the transverse sliding grooves 7 are respectively arranged on the first connecting arm 1, the sliding plate 61 is provided with a transverse sliding block 8, one end of a driving device 62 is connected with the headrest 6, and the other end of the driving device 62 is connected with the seat base 5. The driving device 62 drives the headrest 6 to move up and down to adjust the height of the headrest 6, the headrest 6 drives the sliding plate 61 to move up and down, when the headrest 6 drives the sliding plate 61 to move up or down, the sliding plate 61 drives the first connecting arm 1 and the second connecting arm 2 to move up or down synchronously through the sliding assembly, and meanwhile, the first connecting arm 1 and the second connecting arm 2 move left and right relatively through the relative left and right movement of the transverse sliding block 8 and the transverse sliding groove 7 to realize the left and right movement of the relative sliding plate 61; when the sliding plate 61 drives the first connecting arm 1 and the second connecting arm 2 to move up and down, the first connecting arm 1 and the second connecting arm 2 drive the first supporting arm 11 and the second supporting arm 21 to move up and down, the first supporting arm 11 and the second supporting arm 21 drive the connecting piece 3 to move up and down along the guide channel 41, when the connecting member 3 moves upward to abut against the upper stopper 411 or moves downward to abut against the lower stopper 412, the first arm 11 and the second arm 21 rotate around the connecting member 3 to make the included angle between the first arm 11 and the second arm 21 larger or smaller, thereby realize the relative or relative motion of first linking arm 1 and second linking arm 2, first linking arm 1 and second linking arm 2 simultaneously pass through the slip subassembly and realize moving about on slide 61, and first linking arm 1 and second linking arm 2 drive left flank 12 and right flank 22 respectively and are close to each other or keep away from to realize the synchro-control of the height and the width of left flank 12 and right flank 22.

The adjusting principle of the child safety seat is as follows: when the headrest 6 rises, the driving device 62 drives the headrest 6 to move upwards, the height of the headrest 6 is adjusted when the headrest 6 moves upwards and downwards, when the headrest 6 rises, the headrest 6 drives the sliding plate 61 to move upwards, the sliding plate 61 drives the first connecting arm 1 and the second connecting arm 2 to move upwards, at the moment, the first connecting arm 1 and the second connecting arm 2 drive the left side wing 12 and the right side wing 22 to rise respectively, the first connecting arm 1 and the second connecting arm 2 drive the first supporting arm 11 and the second supporting arm 21 to move upwards, the first supporting arm 11 and the second supporting arm 21 drive the connecting piece 3 to move upwards along the guide channel 41, when the connecting piece 3 moves upwards to abut against the upper limiting part 411, the first supporting arm 11 and the second supporting arm 21 rotate upwards around the connecting piece 3 to increase the included angle between the first supporting arm 11 and the second supporting arm 21, the first supporting arm 11 and the second supporting arm 21 drive the first connecting arm 1 and the second connecting arm 2 to move towards each other, meanwhile, the first connecting arm 1 is matched with the sliding plate 61 through the transverse sliding block 8 and the transverse sliding groove 7 to move leftwards, the second connecting arm 2 is matched with the sliding plate 61 through the transverse sliding block 8 and the transverse sliding groove 7 to move rightwards, the first connecting arm 1 and the second connecting arm 2 are far away from each other, at the moment, the first connecting arm 1 and the second connecting arm 2 respectively drive the left side wing 12 and the right side wing 22 to be far away from each other, and therefore the width between the left side wing 12 and the right side wing 22 is increased; when the headrest 6 descends, the driving device 62 drives the headrest 6 to move downwards, the headrest 6 drives the sliding plate 61 to move downwards, the sliding plate 61 drives the first connecting arm 1 and the second connecting arm 2 to move downwards, at this time, the first connecting arm 1 and the second connecting arm 2 drive the left wing 12 and the right wing 22 to descend respectively, the first connecting arm 1 and the second connecting arm 2 drive the first supporting arm 11 and the second supporting arm 21 to move downwards, the first supporting arm 11 and the second supporting arm 21 drive the connecting piece 3 to move downwards along the guide channel 41, when the connecting piece 3 moves upwards and abuts against the lower limiting part 412, the first supporting arm 11 and the second supporting arm 21 rotate downwards around the connecting piece 3 to reduce an included angle between the first supporting arm 11 and the second supporting arm 21, the first supporting arm 11 and the second supporting arm 21 drive the first connecting arm 1 and the second connecting arm 2 to move relatively, and at the same time, the first connecting arm 1 is matched with the sliding plate 61 through the transverse sliding block 8 and the transverse sliding groove 7 to move rightwards, the second connecting arm 2 is mutually matched with the sliding plate 61 through the transverse sliding block 8 and the transverse sliding groove 7 to move leftwards, the first connecting arm 1 and the second connecting arm 2 are close to each other, and at the moment, the first connecting arm 1 and the second connecting arm 2 respectively drive the left side wing 12 and the right side wing 22 to be close to each other, so that the width between the left side wing 12 and the right side wing 22 is reduced.

Example 2

As shown in the figure, the present embodiment is different from embodiment 1 in that: the upper stopper 411 is an upper end inner wall of the guide passage 41, and the lower stopper 412 is a lower end inner wall of the guide passage 41. The upper stopper 411 and the lower stopper 412 are simple in structure and low in cost.

Example 3

The headrest height and side wing width synchronous adjusting mechanism of the child safety seat, as shown in the figure, the difference between the present embodiment and embodiment 2 is: the upper limit portion 411 and the lower limit portion 412 are both limit strips fixedly installed on the guide channel 41. The limiting strip is reliable in limiting, and the limiting position can be fixedly installed on the guide channel 41 according to the requirement of a user.

Example 4

The headrest height and side wing width synchronous adjusting mechanism of the child safety seat, as shown in the figure, the difference between the present embodiment and embodiment 2 is: the guide channel 41 is arranged along the vertical direction, the guide channel 41 is a guide opening, a first mounting opening 111 is formed in one end of the first support arm 11, a second mounting opening 211 is formed in one end of the second support arm 21, and one end of the connecting piece 3 sequentially penetrates through the first mounting opening 111, the guide opening and the second mounting opening 211 to be fixed or sequentially penetrates through the second mounting opening 211, the guide opening and the first mounting opening 111 to be fixed. It is clear that the connecting element 3 can be a pin on which a nut is fitted to prevent the second arm 21 or the first arm 11 from falling off after fixing. The first support arm 11 and the second support arm 21 are simple in structure, the guide channel 41 is a guide opening, the processing is convenient, the connecting piece 3 is matched with the guide opening, the installation is convenient, the connection is firm, and the movement coordination and the fluency of the first support arm 11 and the second support arm 21 are good.

Example 5

The headrest height and side wing width synchronous adjusting mechanism of the child safety seat, as shown in the figure, the difference between the present embodiment and embodiment 4 is: the guide channel 41 is a guide groove, a first mounting opening 111 is formed in one end of the first support arm 11, a second mounting opening 211 is formed in one end of the second support arm 21, and one end of the connecting piece 3 sequentially penetrates through the first mounting opening 111 and the second mounting opening 211 and then is inserted into the guide groove or sequentially penetrates through the second mounting opening 211 and the first mounting opening 111 and then is inserted into the guide groove. The first support arm 11 and the second support arm 21 are hinged with the guide part 4 through the connecting part 3, so that the space occupation is small and the structure is compact. It is clear that the guide grooves can also be two, respectively opening on the outside and inside of the guide 4, the first arm 11 and the second arm 21 being respectively arranged on the outside or inside of the guide 4 via the connecting element 3.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.

Claims

1. Children's safety seat headrest height and flank width synchronous regulation mechanism includes left first linking arm (1) and second linking arm (2) on right side, its characterized in that: the chair also comprises a first support arm (11) hinged with the first connecting arm (1), a second support arm (21) hinged with the second connecting arm (2), a connecting piece (3) used for connecting the first support arm (11) and the second support arm (21), and a guide piece (4) fixed on the seat base (5), wherein the first support arm (11) and the second support arm (21) are hinged with each other through the connecting piece (3), a guide channel (41) is arranged on the guide piece (4), the connecting piece (3) is in sliding fit with the guide channel (41), the guide channel (41) comprises an upper limit part (411) and a lower limit part (412) used for limiting the stroke of the connecting piece (3), when the first support arm (11) and the second support arm (21) move upwards or downwards, the connecting piece (3) is driven to move upwards or downwards synchronously move along the guide channel (41), and when the connecting piece (3) moves upwards to abut against the upper limit part (411) or moves downwards to abut against the lower limit part (412), the first support arm (11) and the second support arm (21) rotate around the connecting piece (3) to enable the included angle between the first support arm (11) and the second support arm (21) to be increased or decreased, and relative or opposite movement of the first connecting arm (1) and the second connecting arm (2) is achieved.

2. The headrest height and side flap width synchronous adjustment mechanism of a child safety seat according to claim 1, wherein: the first support arm (11) and the second support arm (21) are symmetrically distributed on two sides of the guide channel (41).

3. The headrest height and side flap width synchronous adjustment mechanism of a child safety seat according to claim 1, wherein: the upper limit part (411) is the upper end inner wall of the guide channel (41), and the lower limit part (412) is the lower end inner wall of the guide channel (41).

4. The headrest height and side flap width synchronous adjustment mechanism of a child safety seat according to claim 1, wherein: the upper limit part (411) and the lower limit part (412) are both limit strips fixedly arranged on the guide channel (41).

5. The headrest height and side flap width synchronous adjustment mechanism for child safety seats of claim 1, 2, 3 or 4, wherein: the guide channel (41) is arranged along the vertical direction, and the guide channel (41) is a guide groove or a guide opening.

6. The mechanism of claim 5, wherein the mechanism is adapted to adjust the height of the headrest and the width of the side wings synchronously: the guide channel (41) is a guide opening, a first mounting opening (111) is formed in one end of the first support arm (11), a second mounting opening (211) is formed in one end of the second support arm (21), and one end of the connecting piece (3) sequentially penetrates through the first mounting opening (111), the guide opening and the second mounting opening (211) and then is fixed or sequentially penetrates through the second mounting opening (211), the guide opening and the first mounting opening (111) and then is fixed.

7. The mechanism of claim 5, wherein the mechanism is adapted to adjust the height of the headrest and the width of the side wings synchronously: the guide channel (41) is a guide groove, a first mounting opening (111) is formed in one end of the first support arm (11), a second mounting opening (211) is formed in one end of the second support arm (21), and one end of the connecting piece (3) penetrates through the first mounting opening (111) and the second mounting opening (211) in sequence and then is inserted into the guide groove or penetrates through the second mounting opening (211) and the first mounting opening (111) in sequence and then is inserted into the guide groove.

8. The headrest height and side flap width synchronous adjustment mechanism of a child safety seat according to claim 1, wherein: the first support arm (11) and the second support arm (21) are symmetrically hinged on the first connecting arm (1) and the second connecting arm (2) through pin shafts respectively.

9. The headrest height and side flap width synchronous adjustment mechanism of a child safety seat according to claim 1, wherein: still include seat base (5), the both sides of seat base (5) are provided with left ramus bone (51) and right ramus bone (52) respectively, are provided with mounting (53) between left ramus bone (51) and right ramus bone (52), and the both ends of mounting (53) are blocked respectively and are established in the inboard of left ramus bone (51) and right ramus bone (52), and the middle part at mounting (53) is fixed to the one end of guide (4), and guide (4) vertical setting.

10. The mechanism of claim 9, wherein the mechanism for synchronously adjusting the height of the headrest and the width of the side wings comprises: the pillow also comprises a left side wing (12), a right side wing (22), a headrest (6), a sliding plate (61) fixedly connected with the headrest (6) and a driving device (62) used for driving the headrest (6) to move up and down, wherein the left side wing (12) is fixedly connected with the first connecting arm (1), the right side wing (22) is fixedly connected with the second connecting arm (2), sliding sleeves (611) are arranged on both sides of the sliding plate (61), the sliding plate (61) is sleeved on the left supporting rib (51) and the right supporting rib (52) through the sliding sleeves (611) and moves up and down along the left supporting rib (51) and the right supporting rib (52), sliding assemblies are arranged between the first connecting arm (1) and the sliding plate (61), each sliding assembly comprises a transverse sliding groove (7) and a transverse sliding block (8), the transverse sliding block (8) is embedded in the transverse sliding groove (7) and can move left and right relative to the transverse sliding groove (7), one of the transverse sliding groove (7) and the transverse sliding block (8) is arranged on the first connecting arm (1) and the second connecting arm (2), the other one is arranged on the sliding plate (61), one end of the driving device (62) is connected with the headrest (6), and the other end of the driving device (62) is connected with the seat base (5).