Child safety seat

Abstract

The application discloses a child safety seat and a high-width synchronous adjustment mechanism of a side wing of the child safety seat. The high-width synchronous adjustment mechanism of the side wing comprises a first guide rail extending along a width direction of the child safety seat, a second guide rail extending along a height direction of the child safety seat, a first matching guide member in sliding cooperation with the first guide rail, and a second matching guide member in sliding cooperation with the second guide rail. The first guide rail is arranged on one of a side wing and an adjustment body, the first matching guide member is arranged on the other one of the side wing and the adjustment body, the second guide rail is arranged on one of a first backrest and the side wing, and the second matching guide member is arranged on the other one of the first backrest and the side wing. In the height adjustment process, the headrest is simultaneously slid on the first guide rail by the first matching guide member and slid on the second guide rail by the second matching guide member, so that the side wing is synchronously adjusted in height and width, the side wing is synchronously adjusted in height and width along with the height adjustment of the headrest, and better universality and comfort are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of children's products, and particularly relates to a children's safety seat and a high-width synchronous adjusting mechanism of a side wing of the children's safety seat. BACKGROUND

[0002] With the wide use of infant carriers, people have higher and higher functional requirements for infant carriers. People not only hope that infant carriers can make infants safer during riding, but also hope that infant carriers can make infants more comfortable and pleasant during riding, and hope that infant carriers are more convenient to operate and use.

[0003] Among them, the children's safety seat is a device installed on a car seat and using a binding device to bind a child, which can effectively reduce the probability of injury of the child in the case of emergency braking or accidental collision of the car.

[0004] It is known that the children's safety seat generally comprises a seat, a backrest connected to the seat, and a headrest and a side wing connected to the backrest. The headrest and the side wing can generally be adjusted relative to the backrest to adapt to children of different sizes.

[0005] In the existing children's safety seat, the height of the side wing can only be adjusted by adjusting the height of the headrest relative to the backrest to drive the side wing to pivot, so as to simultaneously adjust the height of the headrest and the width of the side wing. However, the children's safety seat has the problem that the height of the side wing cannot be adjusted following the adjustment of the height of the headrest, so the universality and comfort are poor.

[0006] Therefore, there is an urgent need for a children's safety seat and a high-width synchronous adjusting mechanism of a side wing with better universality and comfort to overcome the above-mentioned defects. SUMMARY

[0007] An object of the present application is to provide a high-width synchronous adjusting mechanism of a side wing with better universality and comfort.

[0008] Another object of the present application is to provide a children's safety seat with better universality and comfort.

[0009] To achieve the above object, the technical scheme of the present application is to provide a side wing height-width synchronous adjustment mechanism arranged on a child safety seat, the child safety seat comprising a first backrest, a second backrest, a headrest and a side wing. The first backrest and the second backrest are slidably connected to each other along the height direction of the child safety seat, the headrest is assembled to the second backrest and forms an adjustment body together with the second backrest for height adjustment relative to the first backrest, and the side wing is located at the side of the first backrest. The side wing height-width synchronous adjustment mechanism comprises a first guide rail extending along the width direction of the child safety seat, a second guide rail extending along the height direction of the child safety seat, a first matching guide arranged in sliding cooperation with the first guide rail, and a second matching guide arranged in sliding cooperation with the second guide rail. The first guide rail is arranged on one of the side wing and the adjustment body, the first matching guide is arranged on the other one of the side wing and the adjustment body, the second guide rail is arranged on one of the first backrest and the side wing, and the second matching guide is arranged on the other one of the first backrest and the side wing. During height adjustment of the headrest, the side wing is simultaneously adjusted in height and width by sliding the first matching guide on the first guide rail and sliding the second matching guide on the second guide rail.

[0010] Preferably, the side wing is simultaneously translated and rotated relative to the first backrest by the sliding of the first matching guide along the first guide rail and the sliding of the second matching guide along the second guide rail.

[0011] Preferably, the first guide rail is a first curved slot hole, and the first matching guide is arranged in the first curved slot hole and slides in the first curved slot hole along the extension direction of the first curved slot hole.

[0012] Preferably, the first curved slot hole is an upwardly protruding arc-shaped slot hole, and the first matching guide is a pin shaft.

[0013] Preferably, the second guide rail is a second curved slot hole, and the second matching guide is arranged in the second curved slot hole and slides in the second curved slot hole along the extension direction of the second curved slot hole.

[0014] Preferably, the second curved slot hole is an arc-shaped slot hole gradually expanding outward from bottom to top, and the second matching guide is a pin shaft.

[0015] Preferably, the side wing height-width synchronous adjustment mechanism further comprises a side wing reset member always having a tendency to drive the side wing to open outward or contract inward relative to the first backrest, and the side wing reset member is arranged between the side wing and the adjustment body.

[0016] Preferably, the side wing reset member is an elastic member.

[0017] Preferably, the elastic member is a torsion spring, a compression spring or a tensile spring.

[0018] Preferably, the wing restoration member includes a first magnetic structure and a second magnetic structure that attract or repel each other magnetically, the first magnetic structure is mounted on the wing, and the second magnetic structure is mounted on the adjustment body.

[0019] Preferably, the side wing height and width synchronous adjustment mechanism of the present invention further includes a release operating member and a locking member linked to the release operating member, the locking member is movably assembled on one of the first backrest and the adjustment body, the other of the first backrest and the adjustment body is provided with at least two segment matching parts separated from each other along the height direction of the child safety seat, the locking member locks the height adjustment of the adjustment body relative to the first backrest when locked with any segment matching part, and the adjustment body can be adjusted in height relative to the first backrest when the locking member is disengaged from the locking with the segment matching part.

[0020] Preferably, the wing height and width synchronous adjustment mechanism of the present invention further includes an intermediate linkage, which is arranged between the unlocking operating member and the locking member. The unlocking operating member links the locking member to disengage from the segment matching portion through the intermediate linkage.

[0021] Preferably, the locking member extends along the width direction of the child safety seat, and the intermediate linking member extends along the height direction of the child safety seat.

[0022] Preferably, the intermediate linking member has an inclined structure that is inclined forward and backward relative to the height direction of the child safety seat. During the sliding process along the height direction of the child safety seat, the intermediate linking member links the locking member with the inclined structure to make a forward and backward displacement to disengage from the locking portion of the segment matching part.

[0023] Preferably, the first backrest or the second backrest where the segment locking portion is located protrudes outwardly into a convex strip extending in the height direction of the child safety seat, and the segment locking portion is formed on the convex strip.

[0024] Preferably, the middle linking member is provided with an escape space extending in a height direction of the child safety seat, and the convex strip is located in the escape space.

[0025] Preferably, the middle linking member is provided with a long driving inclined groove which is inclined frontward and rearward relative to the height direction of the child safety seat. The driving inclined groove runs through the left and right sides of the middle linking member. The locking member is inserted into the driving inclined groove and can slide in the driving inclined groove. The inclined structure is formed on the upper groove wall and / or the lower groove wall of the driving inclined groove.

[0026] Preferably, the locking member is a rod member or a pin member, and the segment locking portion is a slot structure.

[0027] Preferably, the unlocking operating member is located on the second backrest or the headrest.

[0028] Preferably, the high-width synchronous adjustment mechanism of the child safety seat further comprises a release reset member arranged between the release operating member and the second backrest or the headrest, and the release reset member has a tendency to drive the release operating member to the initial position.

[0029] Preferably, the release reset member is an elastic member, or the release reset member is a first magnetic structure and a second magnetic structure that are magnetically attracted or repelled, the first magnetic structure is installed on the headrest, and the second magnetic structure is installed on the release operating member.

[0030] Preferably, the release operating member is arranged to slide along the height direction of the child safety seat, and the release operating member is exposed to the rear side of the second backrest or the headrest.

[0031] Preferably, one of the release operating member and the headrest is provided with a limiting slot hole extending along the height direction of the child safety seat, and the other of the release operating member and the headrest is provided with a limiting protrusion arranged in the limiting slot hole, and the limiting protrusion is in abutment with one end of the limiting slot hole under the action of the release reset member.

[0032] To achieve the above-mentioned purposes, the child safety seat comprises a base, a first backrest, a second backrest, a headrest, side wings, and the aforementioned high-width synchronous adjustment mechanism. The first backrest and the second backrest are slidably connected to each other along the height direction of the child safety seat, the headrest is assembled on the second backrest and forms an adjustment body together with the second backrest for height adjustment relative to the first backrest, and the side wings are respectively arranged on two opposite sides of the first backrest.

[0033] Preferably, one of the first backrest and the second backrest is provided with a height guide rail, and the other of the first backrest and the second backrest is provided with a matching guide structure that is in sliding cooperation with the height guide rail.

[0034] Preferably, the height guide rail is a straight slot hole, and the matching guide structure is a pin member arranged in the straight slot hole.

[0035] Preferably, the side wings are embedded in the adjustment body, the adjustment body is embedded in the first backrest, and the second backrest is provided with an avoiding space for the second matching guide member to pass through.

[0036] Compared with the prior art, since the side wing height-width synchronous adjustment mechanism of the present invention includes a first guide rail extending along the width direction of the child safety seat, a second guide rail extending along the height direction of the child safety seat, a first guide member slidingly engaged with the first guide rail, and a second guide member slidingly engaged with the second guide rail, the first guide rail is provided on one of the first backrest and the second backrest, the first guide member is provided on the other of the first backrest and the second backrest, the second guide rail is provided on one of the first backrest and the side wing, and the second guide member is provided on the first backrest and the other of the side wing; therefore, during the height adjustment process of the headrest, the headrest simultaneously slides on the first guide rail with the help of the first guide member and the second guide member sliding on the second guide rail to link the side wings for synchronous adjustment of height and width, so that the side wings follow the height adjustment of the headrest to achieve synchronous adjustment of height and width, so as to expand versatility and improve comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic planar structural diagram of the child safety seat of the present invention when it is retracted inwards and projected from front to back.

[0038] Figure 2 yes Figure 1 The diagram shows the planar structure of the child safety seat after the base is hidden.

[0039] Figure 3 yes Figure 2 The diagram shows the planar structure of the child safety seat after it is unfolded outward.

[0040] Figure 4 yes Figure 3 The three-dimensional structural diagram of the child safety seat is shown.

[0041] Figure 5 yes Figure 3 The diagram shows the planar structure of the child safety seat with the second backrest hidden.

[0042] Figure 6 yes Figure 3 The diagram shows a planar structure of a child safety seat when viewed from the rear to the front.

[0043] Figure 7 yes Figure 3 The diagram shows the three-dimensional structure of the child safety seat behind the first backrest in the hidden part.

[0044] Figure 8 yes Figure 3 The diagram shows the three-dimensional structure of the child safety seat behind the hidden headrest.

[0045] Figure 9 yes Figure 3 The diagram shown is a three-dimensional structural diagram of the child safety seat after partially hiding the first backrest and the headrest.

[0046] Figure 10 is Figure 9 is an enlarged view of part D in FIG. 1.

[0047] Figure 11 is a perspective view of part of the first backrest in the child safety seat of the present application as viewed from back to front. DETAILED DESCRIPTION

[0048] Embodiments of the present application will now be described, by way of example only, with reference to the accompanying drawings in which:

[0049] Referring to Figure 1 , the child safety seat 100 of the present application comprises a base 10, a first backrest 20, a second backrest 30a, a headrest 30b, side wings 40, and a side wing height-width synchronous adjustment mechanism 50. The first backrest 20 and the second backrest 30a are slidably connected to each other along the height direction of the child safety seat 100 (i.e. the direction indicated by arrow A) so that the second backrest 30a can be adjusted in height relative to the first backrest 20. The headrest 30b is assembled to the second backrest 30a and together with the second backrest 30a forms an adjustment body 30 that is adjusted in height relative to the first backrest 20, so that the headrest 30b can be adjusted in height together with the second backrest 30a relative to the first backrest 30a. The side wings 40 are respectively located on the two opposite sides (e.g. left and right sides) of the first backrest 20, so that each of the left and right sides of the first backrest 20 has a side wing 40, and the width of the child safety seat 100 of the present application is adjusted by adjusting the side wings 40 on the left and right sides relative to each other. Specifically, in combination with Figures 2 to 5 , and Figure 8 To improve the stability and reliability of the sliding of the second backrest 30a relative to the first backrest 20, the first backrest 20 is provided with a height guide rail 21, and the second backrest 30a is provided with a guide structure 31 that slidably cooperates with the height guide rail 21. Preferably, the height guide rail 21 and the guide structure 31 are respectively arranged on the left and right sides of the child safety seat 10 to increase the reliability of the sliding connection between the second backrest 30a and the first backrest 20. For example, the height guide rail 21 is a straight slot, and the guide structure 31 is a pin member that is inserted into the straight slot, but this is not limiting. It can be understood that according to actual needs, the height guide rail 21 can be provided on the second backrest 30a, and correspondingly, the guide structure 31 can be provided on the first backrest 20, and the purpose of the mutual guidance of the height guide rail 21 and the guide structure 31 can still be achieved. More specifically, as follows:

[0050] As Figures 4 to 9As shown, the side wings 40 are embedded in the adjustment body 30, so that the side wings 40 are limited to the adjustment body 30 in the front-to-back direction of the child safety seat 100, and the adjustment body 30 prevents the side wings 40 from shaking in the front-to-back direction of the child safety seat 100; the adjustment body 30 is embedded in the first backrest 20, so that the adjustment body 30 is limited to the first backrest 20 in the front-to-back direction of the child safety seat 100; the second backrest 30a is provided with an escape space 32 for the second guide member 54 described below to pass through, providing an escape position for the second guide member 54 to slide on the second guide rail 52 described below. Specifically, as Figure 4 、 Figure 6 and Figure 7 As shown, in the adjustment body 30, the second backrest 30a and the headrest 30b are arranged side by side, one in front of the other, and the side wings 40 are located between the second backrest 30a and the headrest 30b in the front-to-back direction of the child safety seat 100, so as to facilitate the assembly operation of the second backrest 30a, the headrest 30b and the side wings 40, but the present invention is not limited thereto.

[0051] like Figure 4 、 Figure 5 、 Figure 7 、 Figure 8 and Figure 9 As shown, the wing height-width synchronous adjustment mechanism 50 includes a first guide rail 51 extending along the width direction of the child safety seat 100 (indicated by arrow B), a second guide rail 52 extending along the height direction of the child safety seat 100, a first guide member 53 slidably engaged with the first guide rail 51, and a second guide member 54 slidably engaged with the second guide rail 52. The first guide rail 51 is provided on the wing 40, and the first guide member 53 is provided on the adjustment body 30 (specifically, the second backrest 30a of the adjustment body 30). Of course, the first guide member 53 can be provided on the wing 30 as needed, and the first guide rail 51 is provided on the adjustment body 30 accordingly, and the present invention is not limited to this. The second guide rail 52 is provided on the wing 40, and the second guide member 54 is provided on the first backrest 20. Of course, the second guide member 54 can be provided on the wing 40 as needed, and the second guide rail 52 is provided on the first backrest 20 accordingly, and the present invention is not limited to this. In the process of adjusting the height of the headrest 30b, the headrest 30b slides on the first guide rail 51 with the help of the first guide member 53 and slides on the second guide rail 52 with the help of the second guide member 54, thereby synchronously adjusting the height and width of the side wings 40, so that the state of the adjusted side wings 40 and the headrest 30b can be seen. Figure 3 and Figure 4 As shown, the state of the side wings 40 and the headrest 30b when not adjusted is shown in FIG. Figure 1 and Figure 2Specifically, the side wings 40 simultaneously slide along the first guide rail 51 with the help of the first guide member 53 and the second guide member 54 along the second guide rail 52, thereby performing translation and rotation relative to the first backrest 20 to expand outward or retract inward, so that the height and width of the side wings 40 are adjusted more smoothly and the space occupied during the adjustment process is smaller. For example, the first guide rail 51 is a first curved slot, the first guide member 53 is inserted into the first curved slot and slides in the first curved slot along the extension direction of the first curved slot. Preferably, the first curved slot is an upwardly protruding arc slot, and the first guide member 53 is a pin member. Meanwhile, the second guide rail 52 is a second curved slot, the second guide member 54 is inserted into the second curved slot and slides in the second curved slot along the extension direction of the second curved slot. Preferably, the second curved slot is an arc slot that gradually expands outward from bottom to top, and the second guide member 54 is a pin member. This allows the side wing 40 to open outward or contract inward relative to the first backrest 20 more smoothly under the action of the first guide member 53 sliding along the first guide rail 51 and the second guide member 54 sliding along the second guide rail 52. However, the present invention is not limited thereto. In order to make the side wing 40 always have a tendency to open outward under normal conditions, for example, Figure 7 、 Figure 9 and Figure 10 The wing height and width synchronous adjustment mechanism 50 further includes a wing reset member 55 that constantly drives the wing 40 to open outward relative to the first backrest 20. The wing reset member 55 is disposed between the wing 40 and the adjustment body 30. Specifically, the wing reset member 55 is an elastic member, such as Figure 7 、 Figure 9 and Figure 10 The torsion spring shown, of course, the side wing reset member 55 can be selected as a compression spring or a tension spring according to actual needs, as long as it is ensured that the assembly position of the side wing reset member 55 always has the tendency to drive the side wing 40 to open outward relative to the first backrest 20; of course, according to actual needs, the side wing reset member 55 can always have the tendency to drive the side wing 40 to retract inward relative to the first backrest 20. It is understandable that, regardless of whether the side wing reset member 55 always has the tendency to drive the side wing 40 to open outward relative to the first backrest 20 or to retract inward, the side wing reset member 55 can be a torsion spring, a compression spring or a tension spring; of course, according to actual needs, the side wing reset member 55 can also include a first magnetic structure and a second magnetic structure that are magnetically attracted or magnetically repelled. In this case, the first magnetic structure is installed on the side wing 40, and the second magnetic structure is installed on the adjustment body 30, preferably installed on the headrest 30b of the adjustment body 30, so as to achieve the ability to open outward or retract inward by means of magnetic attraction or magnetic repulsion, but is not limited to the above examples.

[0052] like Figure 6 ,as well as Figures 8 to 11As shown, the side wing height-width synchronous adjustment mechanism 50 further comprises a release operation member 56 and a locking member 57 connected with the release operation member 56. The locking member 57 is movably arranged on the adjustment body 30, preferably, the locking member 57 is slidably arranged on the second backrest 30a of the adjustment body 30 along the front-rear direction of the child safety seat 100, and the first backrest 20 is provided with sixteen segmental locking portions 221 spaced apart from each other along the height direction of the child safety seat 100. Of course, the segmental locking portions 221 can be provided with two, three, four, five or six segmental locking portions according to actual needs, and are not limited to this. When the locking member 57 is locked with any segmental locking portion 221, the height adjustment of the adjustment body 30 relative to the first backrest 20 is locked, i.e. the height adjustment of the adjustment body 30 relative to the first backrest 20 is blocked. When the locking member 57 is released from the locking with the segmental locking portion 221, the height adjustment of the adjustment body 30 relative to the first backrest 20 is allowed, so that the height adjustment of the adjustment body 30 relative to the first backrest 20 is prevented from being accidentally moved by the cooperation of the locking member 57 and the segmental locking portion 221. Specifically, for example, in order to realize the operation of moving the locking member 57 away, the side wing height-width synchronous adjustment mechanism 50 further comprises an intermediate connecting member 58 arranged between the release operation member 56 and the locking member 57, so that the release operation member 56 releases the locking of the locking member 57 with the segmental locking portion 221 through the intermediate connecting member 58. Preferably, the locking member 57 extends along the width direction of the child safety seat 100, and the intermediate connecting member 58 extends along the height direction of the child safety seat 100. The intermediate connecting member 58 moves the locking member 57 along the front-rear direction of the child safety seat 100 (i.e. the direction indicated by the arrow C) to make the locking or releasing of the locking member 57 with the segmental locking portion 221 easier. More specifically, for example, in order to make the releasing of the locking member 57 with the segmental locking portion 221 more reliable, the intermediate connecting member 58 has an inclined structure 581 inclined forward and backward relative to the height direction of the child safety seat 100. During the sliding of the intermediate connecting member 58 along the height direction of the child safety seat 100, the intermediate connecting member 58 moves the locking member 57 forward and backward to release the locking of the locking member 57 with the segmental locking portion 221 through the inclined structure 581, so that the releasing of the locking member 57 with the segmental locking portion 221 is more reliable. In order to make the connection of the intermediate connecting member 58 with the locking member 57 more reliable, for example, in order to make the releasing of the locking member 57 with the segmental locking portion 221 more reliable, the intermediate connecting member 58 is provided with a long strip-shaped and forward-backward inclined driving inclined groove 58a relative to the height direction of the child safety seat 100. The driving inclined groove 58a penetrates the left and right sides of the intermediate connecting member 58, the locking member 57 is arranged in the driving inclined groove 58a and can slide in the driving inclined groove 58a, and the inclined structure 581 is formed on the upper side groove wall and the lower side groove wall of the driving inclined groove 58a. Figures 7 to 9 Figure 10 Figure 10

[0053] As Figure 11 ​​​As shown, to make the locking of the locking member 57 and the first backrest 20 more reliable, the first backrest 20 where the segment position locking portion 221 is located protrudes outwardly a protrusion 22 extending along the height direction of the child safety seat 100, and the segment position locking portion 221 is formed on the protrusion 22. Correspondingly, the intermediate connecting member 58 is provided with an avoiding space 582 extending along the height direction of the child safety seat 100, and the protrusion 22 is located in the avoiding space 582. For example, the locking member 57 is a rod member or a pin member, and the segment position locking portion 221 is a slot structure, but is not limited thereto. It can be understood that when the segment position locking portion 221 is provided by the second backrest 30a of the adjusting body 30, the protrusion 22 is provided by the second backrest 30a at this time.

[0054] As shown, Figure 6 the release locking operation member 56 is located on the headrest 30b, and of course, the release locking operation member 56 is located on the second backrest 30a according to actual needs. Specifically, the release locking operation member 56 is slidingly arranged along the height direction of the child safety seat 100, and the release locking operation member 56 is exposed at the rear side of the headrest 30b, so as to facilitate the pulling operation of the release locking operation member 56 from the rear side by the operator, and of course, the release locking operation member 56 is exposed at the rear side of the second backrest 30a according to actual needs. More specifically, as shown, Figure 8 the side wing height-width synchronous adjusting mechanism 50 further comprises a release locking reset member 59, which is provided between the release locking operation member 56 and the headrest 30b where the release locking operation member 56 is located. The release locking reset member 59 always has a tendency to drive the release locking operation member 56 to move to the initial position, so as to facilitate the automatic reset of the release locking operation member 56. For example, the release locking reset member 59 is a resilient member, such as but not limited to a compression spring, and of course, according to actual needs, the release locking reset member 59 can also comprise a first magnetic structure and a second magnetic structure which are magnetically attracted or repelled. The first magnetic structure is mounted on the headrest 30b, and the second magnetic structure is mounted on the release locking operation member 56, which can also achieve the purpose of automatic reset of the release locking operation member 56.

[0055] As shown, Figure 8 and Figure 9 to prevent the release locking operation member 56 from being reset excessively, the release locking operation member 56 is provided with a limiting slot 561 extending along the height direction of the child safety seat 100, and the headrest 30b is provided with a limiting protrusion 33 which is inserted into the limiting slot 561. The limiting protrusion 33 is in abutment with one end of the limiting slot 561 under the action of the release locking reset member 59, for example, the upper end of the limiting slot 561 in Figure 8 , but is not limited thereto. It should be noted that the limiting slot 561 can be provided by the headrest 30b, and the limiting protrusion 33 can be provided by the release locking operation member 56, which can also achieve the purpose of limiting, so the above is not limited.

[0056] In conjunction with the accompanying drawings, the principle of adjusting the height and width of the headrest of the child safety seat of the present invention by linking the side wings during the height adjustment process is explained: Figure 2 The headrest 30b and the side wings 40 in the shown state are adjusted as follows Figure 3 、 Figure 4 or Figure 5 When the headrest 30b and the side wings 40 are in the state shown, the operator lifts up Figure 6 The release operating member 56 drives the intermediate linking member 58 to slide upward, thereby the intermediate linking member 58 that slides upward pushes the locking member 57 to slide backward through the inclined structure 581. The sliding direction of the locking member 57 is shown in FIG. Figure 10 The lower arrow in the middle linking member 58 in FIG. 1 indicates the sliding direction of the middle linking member 58. Figure 10 The upper arrow in the middle linking member 58 indicates that the locking member 57 sliding backward is disengaged from the locking member 57. Figure 11 At this time, the operator keeps pulling the release operating member 57 upward while also pulling the headrest 30b upward, so that the headrest 30b and the second backrest 30a are adjusted in height relative to the first backrest 20; and during the height adjustment process of the headrest 30b, the first guide member 53 slides on the first guide rail 51 and the second guide member 54 slides on the second guide rail 52, so that the headrest 30b is linked to the side wings 40 for synchronous adjustment of height and width during the height adjustment process, so that the side wings 40 follow the height adjustment of the headrest 30b to achieve synchronous adjustment of height and width, and the state is shown in FIG. Figure 3 、 Figure 4 or Figure 5 shown.

[0057] Compared with the prior art, the wing height-width synchronous adjustment mechanism 50 of the present invention comprises a first guide rail 51 extending along the width direction of the child safety seat 100, a second guide rail 52 extending along the height direction of the child safety seat 100, a first guide member 53 slidingly engaged with the first guide rail 51, and a second guide member 54 slidingly engaged with the second guide rail 52. The first guide rail 51 is provided on one of the first backrest 20 and the second backrest 30a, and the first guide member 53 is provided on the other of the first backrest 20 and the second backrest 30a. The second guide rail 52 is provided on one of the first backrest 20 and the side wing 40, and the second guide member 54 is provided on the other of the first backrest 20 and the side wing 40; therefore, during the height adjustment process of the headrest 30b, the headrest 30b simultaneously slides on the first guide rail 51 with the help of the first guide member 53 and the second guide member 54 slides on the second guide rail 52, thereby linking the side wing 40 to perform synchronous adjustment of height and width, so that the side wing 40 follows the height adjustment of the headrest 30b to achieve synchronous adjustment of height and width, thereby expanding versatility and improving comfort.

[0058] The above disclosure is merely the preferred embodiments of the present application and is not intended to limit the scope of the present application. Any equivalent changes made according to the patentable scope of the present application shall still fall within the scope of the present application.

Claims

1. A child safety seat comprising a base, a first backrest, a second backrest, a headrest and a side wing, the first backrest and the second backrest being slidably connected to each other along a height direction of the child safety seat, the headrest being assembled to the second backrest and constituting an adjustment body with the second backrest for height adjustment relative to the first backrest, the side wing being located at a side edge of the first backrest, the second backrest and the headrest being arranged side by side in a front-rear direction of the child safety seat, the side wing being located between the second backrest and the headrest in the front-rear direction of the child safety seat, wherein the child safety seat further comprises a side wing height-width synchronous adjustment mechanism, the side wing height-width synchronous adjustment mechanism comprising a first guide rail extending along a width direction of the child safety seat, a second guide rail extending along the height direction of the child safety seat, a first guide element slidably matched with the first guide rail, and a second guide element slidably matched with the second guide rail, the first guide rail being arranged at one of the side wing and the adjustment body, the first guide element being arranged at the other of the side wing and the adjustment body, the second guide rail being arranged at one of the first backrest and the side wing, and the second guide element being arranged at the other of the first backrest and the side wing, wherein the headrest is connected with the side wing to simultaneously perform synchronous height and width adjustment by means of the first guide element sliding on the first guide rail and the second guide element sliding on the second guide rail during height adjustment. wherein The side wing simultaneously performs translation and rotation relative to the first backrest by means of the first guide element sliding along the first guide rail and the second guide element sliding along the second guide rail. The first guide rail is a first curved slot, and the first guide element is arranged in the first curved slot and slides in the first curved slot along the extension direction of the first curved slot.

2. The child safety seat of claim 1, wherein, The first curved slot is an upwardly convex arc-shaped slot, and the first guide element is a pin shaft.

3. The child safety seat of claim 1, wherein, The second guide rail is a second curved slot, and the second guide element is arranged in the second curved slot and slides in the second curved slot along the extension direction of the second curved slot.

4. The child safety seat of claim 3, wherein, The second curved slot is an arc-shaped slot gradually expanding outward from bottom to top, and the second guide element is a pin shaft.

5. The child safety seat of claim 1, wherein, The side wing height-width synchronous adjustment mechanism further comprises a side wing reset element constantly driving the side wing to have a tendency to expand outward or contract inward relative to the first backrest, the side wing reset element being arranged between the side wing and the adjustment body.

6. The child safety seat of claim 5, wherein, The side wing reset element is an elastic element.

7. The child safety seat of claim 2, wherein, The elastic element is a torsional spring, a compression spring or a tensile spring.

8. The child safety seat of claim 7, wherein, The side wing reset element comprises a first magnetic structure and a second magnetic structure that are magnetically attracted or repelled, the first magnetic structure being mounted on the side wing, and the second magnetic structure being mounted on the adjustment body.

9. The child safety seat of claim 8, wherein, ​ 10. The child safety seat of claim 7, wherein, ​ 11. The child safety seat of claim 1, wherein, The release operation member and the locking member are connected, and the locking member is movably arranged on one of the first backrest and the adjustment body, and the other of the first backrest and the adjustment body is provided with at least two segmental locking portions spaced apart from each other along the height direction of the child safety seat, and the locking member is locked when locked with any one of the segmental locking portions, and the adjustment body is height-adjustable relative to the first backrest when the locking member is unlocked from the segmental locking portion.

12. The child safety seat of claim 11, wherein, The release operation member is connected with the locking member through an intermediate connecting member, and the release operation member unlocks the locking member from the segmental locking portion through the intermediate connecting member.

13. The child safety seat of claim 12, wherein, The locking member extends along the width direction of the child safety seat, and the intermediate connecting member extends along the height direction of the child safety seat.

14. The child safety seat of claim 13, wherein, The intermediate connecting member has an inclined structure inclined forward and backward relative to the height direction of the child safety seat, and the intermediate connecting member drives the locking member to move forward and backward away from the segmental locking portion through the inclined structure during sliding along the height direction of the child safety seat.

15. The child safety seat of claim 13, wherein, The first backrest or the adjustment body where the segmental locking portion is located protrudes outwardly a protruding strip extending along the height direction of the child safety seat, and the segmental locking portion is formed on the protruding strip.

16. The child safety seat of claim 15, wherein, The intermediate connecting member is provided with an avoiding space extending along the height direction of the child safety seat, and the protruding strip is located in the avoiding space.

17. The child safety seat of claim 14, wherein, The intermediate connecting member is provided with a long strip-shaped driving inclined groove inclined forward and backward relative to the height direction of the child safety seat, the driving inclined groove penetrates through the left and right sides of the intermediate connecting member, the locking member is arranged in the driving inclined groove and can slide in the driving inclined groove, and the inclined structure is formed on the upper side groove wall and / or the lower side groove wall of the driving inclined groove.

18. The child safety seat of claim 11, wherein, The locking member is a rod member or a pin shaft member, and the segmental locking portion is a groove structure.

19. The child safety seat of claim 11, wherein, The release operation member is arranged on the second backrest or the headrest.

20. The child safety seat of claim 19, wherein, The release operation member is connected with the second backrest or the headrest through a release reset member, and the release reset member has a tendency to drive the release operation member to move to an initial position.

21. The child safety seat of claim 20, wherein, The release reset member is an elastic member, or the release reset member comprises a first magnetic structure and a second magnetic structure which are magnetically attracted or repelled, the first magnetic structure is arranged on the headrest, and the second magnetic structure is arranged on the release operation member.

22. The child safety seat of claim 19, wherein, The release operation member is arranged to slide along the height direction of the child safety seat, and the release operation member is exposed to the rear side of the second backrest or the headrest.

23. The child safety seat of claim 20, wherein, One of the release operation member and the headrest is provided with a limiting groove hole extending along the height direction of the child safety seat, and the other of the release operation member and the headrest is provided with a limiting protrusion arranged in the limiting groove hole, and the limiting protrusion is in abutment with one end of the limiting groove hole under the action of the release reset member.

24. The child safety seat of claim 1, wherein, One of the first backrest and the second backrest is provided with a height guide track, and the other of the first backrest and the second backrest is provided with a matched guide structure which is in sliding cooperation with the height guide track.

25. The child safety seat of claim 24, wherein, The height guide track is a straight slot hole, and the matched guide structure is a pin shaft member which is arranged in the straight slot hole.

26. The child safety seat of claim 1, wherein, The side wing is embedded in the adjusting body, the adjusting body is embedded in the first backrest, and the second backrest is provided with a avoiding space through which the second matched guide member passes.

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