Child safety seat

Abstract

A child safety seat comprising: a base comprising a base limiting assembly; and a seat disposed above the base comprising: a mount disposed above the base; a seat body disposed above the mount and movable relative to the mount along a pitch adjustment path, and a seat limiting assembly disposed on the seat and connected to the seat body; wherein the base limiting assembly and the seat limiting assembly are engaged to limit longitudinal movement of the seat body.

Description

Technical Field

[0001] This application relates to a child safety seat. Background Technology

[0002] Child safety seats are typically used in vehicles such as automobiles to moderately restrict a child's movement in the event of a collision. Considering safety and comfort, and to accommodate children of different sizes, existing child safety seats are designed to rotate between forward-facing and rear-facing positions, and their tilt angle can be adjusted. Therefore, the seat needs to be adjustablely connected to the base via rotating and sliding mechanisms.

[0003] In such a situation, when the vehicle collides, the connection mechanism between the seat and the base will be subjected to very high stress, so improvements are necessary. Summary of the Invention

[0004] A child safety seat according to this application includes: a base including a base limiting component; and a seat disposed above the base, including: a mounting seat disposed above the base; a seat body disposed above the mounting seat and movable relative to the mounting seat along a pitch adjustment path; and a seat limiting component disposed on the seat and connected to the seat body; wherein the base limiting component engages with the seat limiting component to restrict longitudinal movement of the seat body.

[0005] In one embodiment, the mounting base is a swivel base, which is disposed above the base in a manner that allows the seat to rotate relative to the base about a generally vertical axis; wherein the base limiting component and the seat limiting component are configured such that when the seat body rotates to the forward position, the base limiting component engages with the seat limiting component to restrict the longitudinal movement of the seat body in the front-back direction.

[0006] In one embodiment, the base limiting component is disposed at the longitudinal rear edge of the base.

[0007] In one embodiment, the seat rotates relative to the base between a forward position and a rearward position, wherein in the forward position the backrest of the seat is close to the rear side of the base, and in the rearward position the backrest of the seat is close to the front side of the base; the pitch adjustment path includes the bottom of the seat moving approximately back and forth along a longitudinal curve and the backrest of the seat moving approximately up and down along a vertically tilting curve.

[0008] In one embodiment, the seat limiting assembly includes: a vertical portion of the seat limiting assembly extending upward from the circumferential edge of the mounting base; a first engaging portion disposed at the upper end of the vertical portion of the seat limiting assembly, wherein the first engaging portion engages with the base limiting assembly when the seat body rotates to the limiting angle; and a body connecting portion connecting the seat body and the vertical portion of the seat limiting assembly.

[0009] In one embodiment, two vertical portions of the seat limiting assembly are provided, which are symmetrically arranged with respect to the left and right sides of the seat backrest and extend upward along the backrest; two body connecting portions are provided, which are respectively connected to the corresponding vertical portions of the seat limiting assembly.

[0010] In one embodiment, the first engagement portion includes a first engaging hook laterally positioned between the vertical portions of the two seat limiting assemblies. The first engaging hook includes an engaging portion that extends laterally, has a hook-shaped cross-section, and is open at both laterally ends.

[0011] In one embodiment, the first engaging hook further includes two bent portions, which extend from the lateral ends of the engaging portions toward the longitudinal front, and the free end of each bent portion is fixedly engaged to the upper end of the vertical portion of the corresponding seat limiting assembly.

[0012] In one embodiment, the engaging portion has a first vertical wall, a second vertical wall, a bottom wall, and an open top side, wherein the bent portion extends longitudinally forward from both lateral ends of the first vertical wall, the second vertical wall is located behind the first vertical wall, the bottom wall connects the bottom side of the first vertical wall and the bottom side of the second vertical wall, and the open top side is opposite to the bottom wall; wherein the engaging portion engages with the base limiting assembly such that the second vertical wall abuts against the base limiting assembly to prevent the seat from moving forward.

[0013] In one embodiment, the body connection includes a crossbar and a connecting rod. The crossbar is laterally mounted between the vertical portions of the two seat limiting assemblies, and the connecting rod extends in a generally longitudinal direction, with its two ends pivotally connected to the crossbar and the seat body, respectively.

[0014] In one embodiment, there are two connecting rods, each of which has an extension hole extending in the same direction as the connecting rod. The crossbar passes through the extension hole and is pivotally connected to the connecting rod, and the crossbar can move relative to the connecting rod within the extension hole.

[0015] In one embodiment, the first engagement portion includes a hook-shaped portion that extends in a hook shape from the upper end of the vertical portion of the seat limiting assembly for engaging the base limiting assembly.

[0016] In one embodiment, the hook-shaped portion includes a longitudinal extension extending rearward from the upper end of the vertical portion of the seat limiting assembly and a vertical extension extending upward from the rear end of the longitudinal extension, the vertical extension engaging with the base limiting assembly to restrict forward movement of the seat.

[0017] In one embodiment, the hook-shaped portion and the vertical portion of the seat limiting assembly are integrally formed fixing plates; the seat limiting assembly further includes anti-collision buffers, which are attached to the lateral sides of the hook-shaped portion and have an outer contour shape that is substantially the same as that of the hook-shaped portion.

[0018] In one embodiment, the body connecting portion includes a slide rod and a slide groove component with an elongated slide groove. The slide rod is fixed to one of the seat body and the vertical portion of the seat limiting assembly, and the slide groove component is disposed on the other of the seat body and the vertical portion of the seat limiting assembly. The slide rod passes through the slide groove component, and as the seat body rotates relative to the mounting base along a predetermined pitch adjustment path, the slide rod can move relative to the slide groove component.

[0019] In one embodiment, the body connecting portion secures the seat limiting assembly to the seat body; the first engaging portion and the base limiting assembly engage with each other such that as the seat body moves relative to the mounting seat along a predetermined pitch adjustment path, the first engaging portion and the base limiting assembly can move relative to each other.

[0020] In one embodiment, the first engagement portion includes a first engaging hook disposed between the vertical portions of two seat limiting assemblies. The first engaging hook extends laterally, has a hook-shaped cross-section, and is open at both lateral ends. The first engaging hook has a first longitudinal wall, a second longitudinal wall, a rear wall, and an open front side. The first longitudinal wall is connected to the seat body, the second longitudinal wall is located above the first longitudinal wall, the rear wall is connected between the rear side of the first longitudinal wall and the rear side of the second longitudinal wall, and the open front side is opposite to the rear wall and faces the seat body. The first engaging hook is movable relative to the base limiting assembly within a travel range and prevents the seat from moving forward by abutting against the base limiting assembly through the rear wall.

[0021] In one embodiment, the base includes: two vertical top rod portions arranged symmetrically with respect to the base and extending upward from the longitudinal rear edge of the base; and a second engaging portion disposed between the two vertical top rod portions and engaging with the seat limiting assembly.

[0022] In one embodiment, the second engagement portion includes a second engaging hook positioned between the two vertical portions of the top rods, the second engaging hook extending laterally, having a hook-shaped cross-section, and being open at both lateral ends.

[0023] In one embodiment, the second joint further includes a reinforcing member that is laterally mounted between the vertical portions of the two top rods; the second engaging hook is a base engaging piece and is attached to the bottom side of the reinforcing member.

[0024] In one embodiment, the second engaging hook has a third vertical wall and a top wall, wherein the top wall is connected to the vertical portion of the top rod, and the third vertical wall extends downward from the front end of the top wall; wherein the engagement of the third vertical wall with the seat limiting assembly prevents the seat from moving forward.

[0025] In one embodiment, the second engaging hook has a third longitudinal wall, a fourth longitudinal wall, and an end wall, wherein the third longitudinal wall is connected to the vertical portion of the top rod, the fourth longitudinal wall is located below the third longitudinal wall, and the end wall is connected between the front side of the third longitudinal wall and the front side of the fourth longitudinal wall; wherein the second engaging hook is movable relative to the seat limiting assembly within a travel range, and the fourth longitudinal wall abuts against the seat limiting assembly to prevent the seat from moving forward.

[0026] In one embodiment, as the seat body moves along the pitch adjustment path, the seat and the base remain engaged by the seat limiting assembly and the base limiting assembly, and the relative positions between the first engagement portion of the seat limiting assembly and the second engagement portion of the base limiting assembly remain substantially unchanged. Attached Figure Description

[0027] The embodiments of this application will be described in detail below with reference to the accompanying drawings, in which:

[0028] Figure 1 This is a perspective view of a child safety seat according to a first embodiment of the present application, wherein the seat and the base are shown in a separated state;

[0029] Figure 2 This is a 3D image of the child safety seat;

[0030] Figure 3 This is a rear view of the child safety seat;

[0031] Figure 4A This is a side sectional view of the child safety seat, showing the seat in a supine position. Figure 4B yes Figure 4A A magnified view of the area within the box;

[0032] Figure 5AThis is a side sectional view of the child safety seat, showing the seat in an upright position. Figure 5B yes Figure 5A A magnified view of the area within the box;

[0033] Figure 6 This is a perspective view of a part of the mounting bracket and seat limiting assembly;

[0034] Figure 7 It is a part of the base, mounting base, seat limiting assembly, and a side sectional view of the base limiting assembly;

[0035] Figure 8 This is a perspective view of a child safety seat according to the second embodiment of this application;

[0036] Figure 9A This is a 3D view of a child safety seat from another angle. Figure 9B yes Figure 9A A magnified view of the area within the box;

[0037] Figure 10A This is a side sectional view of the child safety seat. Figure 10B yes Figure 10A A magnified view of the area within the box;

[0038] Figure 11 This is a rear view of a child safety seat according to a third embodiment of this application;

[0039] Figure 12 This is a 3D view of the child safety seat, showing the seat and base top bar in a fitted position;

[0040] Figure 13 This is a 3D view of the child safety seat, showing the seat and base top bar in a separate configuration;

[0041] Figure 14A This is a side sectional view of the child safety seat, showing the main body connecting part located outside the vertical part of the seat limiting assembly. Figure 14B yes Figure 14A A magnified view of the area within the box;

[0042] Figure 15A This is a side sectional view of the child safety seat, showing the main body connecting part located inside the vertical part of the seat limiting assembly. Figure 15B yes Figure 15A A magnified view of the area within the box;

[0043] Figure 16A This is a 3D view of the child safety seat, with a portion of the seat body removed to show the connection points. Figure 16B yes Figure 16A A magnified view of the area within the box;

[0044] Figure 17 This is a side view of the child safety seat with part of the base removed;

[0045] Figure 18 This is a partial enlarged view of the body connection portion of a child safety seat according to the fourth embodiment of this application;

[0046] Figure 19A This is a side view of a child safety seat according to a fifth embodiment of this application, wherein the seat body is in a generally upright position, and wherein a portion of the seat body has been removed to show the first and second engaging hooks. Figure 19B yes Figure 19A A magnified view of the area within the box;

[0047] Figure 20A This is a side view of a child safety seat according to a fifth embodiment of this application, wherein the seat body is in a generally supine position, and wherein a portion of the seat body has been removed to show the first and second engaging hooks. Figure 20B yes Figure 20A A magnified view of the area within the box.

[0048] List of reference numerals

[0049] 1 Seat

[0050] 100 Seat Body

[0051] 110 Bottom

[0052] 120 Backrest

[0053] 121 Slotting

[0054] 130 Pitch Adjustment Path

[0055] 131 Longitudinal Curve

[0056] 132 Vertical forward-leaning curve

[0057] 140 Seat Rail

[0058] 150 Backrest

[0059] 200 mounting base

[0060] 210 Vertical axis

[0061] 220 Mounting bracket slide component

[0062] 300 Seat Limiting Components

[0063] 310 First hook

[0064] 309 Card Section

[0065] 311 Bending section

[0066] 312 First Vertical Wall

[0067] 313 Second Vertical Wall

[0068] 314 bottom wall

[0069] 315 Open top side

[0070] 316 First longitudinal wall

[0071] 317 Second longitudinal wall

[0072] 318 Rear Wall

[0073] 319 Open front side

[0074] 320 Hook-like part

[0075] 321 Longitudinal extension

[0076] 322 Vertical extension

[0077] 330 Seat limiting assembly vertical part

[0078] 331 Vertical hole

[0079] 350 Body Connection Part

[0080] 351 Crossbar

[0081] 352 Link

[0082] 352a Extension Hole

[0083] 353 Slide Bar

[0084] 354 Slide Part

[0085] 360° anti-collision buffer

[0086] 2. Base

[0087] 400 Base limiting component

[0088] 410 Second Card Hook

[0089] 411 Third Vertical Wall

[0090] 412 Top Wall

[0091] 413 Third longitudinal wall

[0092] 414 Fourth longitudinal wall

[0093] 415 end wall

[0094] 420 Reinforcing Component

[0095] 500 push rod

[0096] 510 Vertical part of the top rod

[0097] 520 Top Rod Lateral Section Detailed Implementation

[0098] While this invention has been illustrated and described with reference to specific embodiments, it should not be limited to the details shown. Rather, various modifications to these details may be made within the scope of equivalents of the claims and without departing from the invention.

[0099] The descriptions of directions such as "front", "back", "up" and "down" used in this document are for ease of understanding only. This invention is not limited to these directions, but can be adjusted according to the actual situation. Although this application has been described with reference to typical embodiments, the terminology used is illustrative and exemplary, and not restrictive.

[0100] First refer to Figures 1 to 4A General description of a child safety seat according to a first embodiment of this application.

[0101] The child safety seat includes a base 2 and a seat 1. The seat 1 is positioned above the base 2 and is the portion for a child to sit on. Further, the seat 1 includes a seat body 100, a mounting base 200, and a seat limiting assembly 300. The base 2 is used to secure the child safety seat to a vehicle, such as a car. The base 2 has a base limiting assembly 400, which cooperates with the seat limiting assembly 300 on the seat 1 to limit the longitudinal movement of the seat 1.

[0102] To facilitate a comprehensive understanding of this application by those skilled in the art, the portion of the seat limiting assembly 300 that engages with the base limiting assembly 400 is collectively referred to as the first engagement portion, specifically the first engaging hook 310 in this embodiment; the portion of the base limiting assembly 400 that engages with the seat limiting assembly is collectively referred to as the second engagement portion, specifically the second engaging hook 410 in this embodiment. Furthermore, the components of the various embodiments of this application are interchangeable. For example, the first and second engagement portions of the first embodiment can be applied to the third embodiment, and the first and second engagement portions of the second embodiment can also be alternatively applied to the third embodiment.

[0103] like Figure 2As shown, the base limiting assembly 400 includes a second engaging portion. The push rod 500 is generally U-shaped, with two vertical push rod portions 510 symmetrically arranged relative to the base 2, extending upwards from the longitudinal rear edge of the base 2. A horizontal push rod portion 520 connects the top ends of the two vertical push rod portions 510. The second engaging portion is positioned between the two push rods 500, engaging with the seat limiting assembly 300 when the seat body 100 rotates to the limiting angle. A vertical slot 121 is provided on the backrest portion 120 of the seat body 100. The seat limiting assembly 300 is disposed inside the seat body 100 and extends from the inside of the seat body 100 to the rear of the seat 1 via the slot 121. The slot 121 also allows relative movement between the seat limiting assembly 300 and the seat body 100.

[0104] like Figure 1 and Figure 4A As shown, the seat body 100 can move relative to the mounting base 200 along the pitch adjustment path 130. Figure 4A The pitch adjustment path 130 is shown schematically and not restrictively, only to help those skilled in the art understand the positional relationship between the seat body 100, the mounting base 200, and the seat limiting assembly 300. Figure 4A In the embodiment shown, the pitch adjustment path 130 includes a generally forward and backward movement of the bottom 110 of the seat 1 along a longitudinal curve 131 and a generally up and down movement of the backrest 120 of the seat 1 along a vertically tilting curve 132.

[0105] A laterally extending seat slide bar 140 is provided below the seat body 100, and a pair of mounting seat grooves 220 are provided above the mounting base 200. Each seat slide bar 140 is mounted in a pair of mounting seat grooves 220 to allow the seat body 100 to move relative to the mounting base 200 along a pitch adjustment path 130. The seat body 100 and / or the mounting base 200 are also provided with control mechanisms for limiting or allowing movement of the seat body 100, which will not be described in detail here. It should be understood that the vertical portion 330 of the seat limiting assembly 300 is fixed to the mounting base 200 and does not move substantially with the seat body 100, see [reference]. Figure 4A , Figure 5A , Figure 6 .

[0106] In one embodiment, the mounting base 200 is a swivel base, additionally providing rotational functionality for the seat body 100. The mounting base 200 is generally disc-shaped and positioned above the base 2 in a manner allowing the seat 1 to rotate relative to the base 2 about a generally vertical axis 210. This generally vertical axis 210 may have a slightly forward-tilted angle. The seat body 100 is positioned above the mounting base 200 and is rotatable relative to the mounting base 200 along a pitch adjustment path 130. The seat body 100 rotates together with the mounting base 200 about the vertical axis 210, thus the seat 1 has a forward position with the backrest 120 facing backward and a rearward position with the backrest 120 facing forward. In the forward position, the backrest 120 of the seat 1 is close to the rear side of the base 2, and in the rearward position, the backrest 120 of the seat 1 is close to the front side of the base 2.

[0107] The seat limiting assembly 300 is disposed on the mounting base 200 and connected to the seat body 100. More specifically, the vertical portion 330 of the seat limiting assembly 300 is fixed to the sliding groove member 220 of the mounting base 200. For example, in this embodiment, the mounting base 200 has two sets of sliding groove members 220. The two vertical portions 330 are respectively fixed to the longitudinal rear of the mounting base 200, for example, respectively fixed to each of the sliding groove members 220 in one set of sliding groove members 220 disposed in the longitudinal rear, see [reference]. Figure 4A , Figure 5A , Figure 6 The base limiting assembly 400 and the seat limiting assembly 300 are configured such that when the seat body 100 rotates relative to the mounting base 200 to a limiting angle, the base limiting assembly 400 engages with the seat limiting assembly 300 to restrict the longitudinal movement of the seat body 100 in the front-back direction.

[0108] In this embodiment, the limiting angle is the forward position of the seat 1, that is, the position where the backrest 120 is located at the rear. In other embodiments, depending on specific needs, the limiting angle can also be other positions of the seat 1, such as the rearward position or the lateral position.

[0109] Now refer to Figures 4B to 7 The seat limiting assembly 300 and the base limiting assembly 400 of the first embodiment are described in detail.

[0110] The seat limiting component 300 includes a seat limiting component vertical portion 330, a first engaging portion (in this embodiment, it is configured as a first engaging hook 310) and a body connecting portion 350.

[0111] like Figure 6 and Figure 7As shown, the vertical portion 330 of the seat limiting assembly is the part that fixes the seat limiting assembly 300 to the mounting base 200. The vertical portion 330 of the seat limiting assembly extends upward from the circumferential edge of the mounting base 200. In this embodiment, two vertical portions 330 of the seat limiting assembly are provided, symmetrically arranged with respect to the left and right sides of the backrest portion 120 of the seat 1 at the circumferential position, and extending upward along the backrest portion 120. In other embodiments, the vertical portion 330 of the seat limiting assembly may be single or multiple. The vertical portion 330 of the seat limiting assembly may extend slightly backward to make way for the backrest portion 120 of the seat body 100.

[0112] The first engagement portion is the part that engages the seat limiting assembly 300 to the base limiting assembly 400. In this embodiment, the first engagement portion (i.e., the first engaging hook 310) engages with the second engaging hook 410 of the seat limiting assembly 400, see [link to previous section]. Figures 4A to 5B The first engaging portion is located at the upper end of the vertical portion 330 of the seat limiting assembly. More specifically, the first engaging portion extends rearward from the upper end of the vertical portion 330 of the seat limiting assembly. When the seat body 100 rotates to the limiting angle, the first engaging portion engages with the base limiting assembly 400. In this embodiment, the first engaging portion includes a first engaging hook 310 laterally positioned between the two vertical portions 330 of the seat limiting assemblies. Figure 6 As shown, the first engaging hook 310 includes an engaging portion 309 and two bent portions 311. The engaging portion 309 extends laterally in an arc shape, has a hook-shaped cross-section, and is open at both ends laterally. More specifically, the center of curvature of the arc of the engaging portion 309 can be located at the vertical axis 210, so that the engaging portion 309 is inserted into the base limiting assembly 400 as the seat 1 rotates. The two bent portions 311 extend longitudinally forward from both ends of the engaging portion 309, and the free end of each bent portion 311 is fixedly engaged to the upper end of the corresponding seat limiting assembly vertical portion 330.

[0113] It should be understood that in other embodiments, the first engaging hook 310 may also be directly formed on the vertical portion 330 of the seat limiting assembly. That is, the vertical portion 330 of the seat limiting assembly and the first engaging hook 310 may be formed as one piece.

[0114] like Figure 4B and Figure 5BAs shown, the engaging portion 309 has a first vertical wall 312, a second vertical wall 313, a bottom wall 314, and an open top side 315 (i.e., the open portion of the engaging portion 309 opposite to the bottom wall 314). The first vertical wall 312 is connected to the vertical portion 330 of the seat limiting assembly via a bend 311, that is, the bend 311 extends longitudinally forward from both lateral ends of the first vertical wall 312. The second vertical wall 313 is located behind the first vertical wall 312, the bottom wall 314 connects the bottom sides of the first vertical wall 312 and the second vertical wall 313, and the open top side 315 is opposite to the bottom wall 314. Thus, when the engaging portion 309 engages with the base limiting assembly 400, the second vertical wall 313 abuts against the base limiting assembly 400 (specifically, the third vertical wall 411) to prevent the seat 1 from moving forward.

[0115] The body connection portion 350 is the portion that connects the seat limiting assembly 300 to the seat body 100 and allows the seat body 100 to move relative to the mounting base 200 (i.e., move along the pitch adjustment path 130). In this embodiment, the body connection portion 350 is pivotally connected to the backrest frame 150 of the seat body 100. The backrest frame 150 is fixedly disposed behind the backrest portion 120 of the seat body 100. Figure 4B and Figure 5B As shown, the body connecting portion 350 is connected at the top end of the vertical portion 330 of the seat limiting assembly and is disposed between the seat body 100 and the vertical portion 330 of the seat limiting assembly. The body connecting portion 350 includes a crossbar 351 and a connecting rod 352. The crossbar 351 is horizontally mounted between the two vertical portions 330 of the seat limiting assembly, and the connecting rod 352 extends in a generally longitudinal direction, with both ends of the connecting rod 352 pivotally connected to the crossbar 351 and the seat body 100, respectively. Figure 4B The main body connection part 350 corresponds to the state where the seat 1 is in a supine position. Figure 5B The main body connecting part 350 corresponds to the seat 1 being in the upright position.

[0116] The number of connecting rods 352 corresponds to the number of vertical portions 330 of the seat limiting assembly. In an embodiment with two vertical portions 330 of the seat limiting assembly, two connecting rods 352 are provided, each connected to the corresponding vertical portion 330 of the seat limiting assembly and to the seat body 100. Each connecting rod 352 has an extension hole 352a extending in the same direction as the connecting rod 352, and each vertical portion 330 of the seat limiting assembly has a vertical portion hole 331 at its upper end. Figure 7A crossbar 351 is fixedly disposed in the vertical portion hole 331 and passes through the extension hole 352a, pivotally connected to the connecting rod 352, and the crossbar 351 can move relative to the extension hole 352a. More specifically, the cross-sectional shape of the crossbar 351 is approximately the same as the shape of the vertical portion hole 331, for example, both are circles with approximately the same diameter. Furthermore, the cross-sectional shape of the crossbar 351 is slightly smaller than the size of the extension hole 352a. In this way, while allowing the seat body 100 to move along the pitch adjustment path 130, the seat limiting assembly 300 connects the seat body 100 to the base 2 via the connecting rod 352, thereby restricting the longitudinal movement of the seat body 100.

[0117] The base limiting assembly 400 includes a second engagement portion.

[0118] The vertical portion 510 of the push rod 500 is the part that fixes the base limiting assembly 400 to the base 2. The two vertical portions 510 are arranged symmetrically with respect to the base 2 and extend upward from the longitudinal rear edge of the base 2. The second engagement portion is provided between the two vertical portions 510, and when the seat body 100 rotates to the limiting angle, the second engagement portion engages with the first engagement portion of the seat limiting assembly 300.

[0119] More specifically, in this embodiment, the second engagement portion includes a second engaging hook 410 disposed between the two vertical portions 510 of the top rods. The second engaging hook 410 extends laterally, has a hook-shaped cross-section, and is open at both ends laterally. In one embodiment, the first engaging hook 310 extends laterally in an arc shape around the vertical axis 210 (see [link]). Figure 6 The second engaging hook 410 also has a generally similar arcuate shape so that it engages with the first engaging hook 310 of the seat limiting assembly 300 as the seat 1 rotates. However, it should be understood that the arcuate shape of the first engaging hook 310 and the second engaging hook 410 is not necessary, and they can also extend in a generally straight line in the transverse direction. Furthermore, a guide structure may be provided at the opening where the first engaging hook 310 and the second engaging hook 410 engage so that the first engaging hook 310 and the second engaging hook 410 can engage smoothly.

[0120] In one embodiment, the second engaging hook 410 includes a base engaging piece and a reinforcing member 420, the reinforcing member 420 being laterally positioned between the vertical portions 510 of the two top rods, the base engaging piece being attached to the bottom side of the reinforcing member 420 and having a hook-shaped cross-section for engaging with the seat limiting assembly 300. In other embodiments, the base engaging piece may be omitted, and the hook-shaped cross-section may be directly formed by the reinforcing member 420.

[0121] like Figure 4B and Figure 5BAs shown, the second engaging hook 410 has a third vertical wall 411 and a top wall 412, wherein the top wall 412 is connected to the vertical portion 510 of the top rod, and the third vertical wall 411 extends downward from the front end of the top wall 412. The third vertical wall 411 engages with the seat limiting assembly 300 (specifically the second vertical wall 313) to prevent the seat 1 from moving forward.

[0122] Now refer to Figures 8 to 10B A second embodiment of a child safety seat according to this application is described.

[0123] The difference between the second embodiment and the first embodiment is that the first locking hook 310 has a different form.

[0124] In this embodiment, the first engagement portion includes a hook-shaped portion 320, which extends in a hook shape from the upper end of the vertical portion 330 of the seat limiting assembly to engage the base limiting assembly 400. The hook-shaped portion 320 includes a longitudinal extension 321 extending rearward from the upper end of the vertical portion 330 of the seat limiting assembly and a vertical extension 322 extending upward from the rear end of the longitudinal extension 321. The vertical extension 322 engages with the base limiting assembly 400 to restrict the seat 1 from moving forward.

[0125] In this embodiment, the hook-shaped portion 320 and the vertical portion 330 of the seat limiting assembly are integrally formed fixing plates. The seat limiting assembly 300 also includes a collision buffer 360, which is attached to both lateral sides of the hook-shaped portion 320 and has an outer contour shape that is substantially the same as that of the hook-shaped portion 320. However, the collision buffer 360 is not necessary; in other embodiments, the collision buffer 360 may be omitted.

[0126] Now refer to Figures 11 to 17 A child safety seat according to a third embodiment of this application is described.

[0127] The third embodiment differs from the first embodiment in that the body connecting portion 350 has a different form. In the third embodiment, the body connecting portion 350 includes a slide rod 353 and a slide groove component 354 having a generally vertical slide groove. The slide rod 353 is fixed to the vertical portion 330 of the seat limiting assembly, while the slide groove component 354 is fixed to the backrest frame 150 of the seat body 100. More specifically, the slide rod 353 is mounted between the two vertical portions 330 of the seat limiting assembly. The slide groove component 354 is a perforated plate with a slide groove whose extension direction matches the pitch adjustment path 130 of the seat body 100. Thus, the slide rod 353 passes through the slide groove component 354, and when the seat body 100 is pitch adjusted, as the seat body 100 moves relative to the mounting base 200 along the predetermined pitch adjustment path 130, the slide rod 353 can move relative to the slide groove component 354.

[0128] The slide rail component 354 can be disposed on the outer side of the vertical portion 330 of the seat limiting assembly (see...). Figure 14B Alternatively, it can be installed on the inner side of the vertical portion 330 of the seat limiting assembly (see...). Figure 15B In such Figure 14B and Figure 15B In this case, the slide rail component 354 is configured as a separate component and is fixed to the rear of the seat body 100.

[0129] Now refer to Figure 18 A fourth embodiment of a child safety seat according to this application is described.

[0130] The fourth embodiment is largely the same as the third embodiment. The only difference is that in the fourth embodiment, the slide groove component 354 is fixed to the vertical portion 330 of the seat limiting assembly, while the slide rod 353 is fixed to the seat body 100. Similarly, the slide groove component 354 can be omitted, and the slide groove can be directly formed on the vertical portion 330 of the seat limiting assembly.

[0131] Now refer to Figures 19A to 20B A fifth embodiment of a child safety seat according to this application is described.

[0132] In the fifth embodiment, the seat limiting assembly 300 includes a first engaging portion (specifically a first engaging hook 310) and a body connecting portion 350, and does not necessarily include a vertical portion 330 of the seat limiting assembly. The body connecting portion 350 secures the seat limiting assembly 300 to the backrest frame 150 of the seat body 100 (i.e., the first engaging hook 310 is secured to the backrest portion 150 of the seat body 100), instead of allowing relative movement between the seat body 100 and the seat limiting assembly 300 as in the first to fourth embodiments. The body connecting portion 350 can be secured to the backrest frame 150 using a common fixing connection method, therefore a detailed description thereof is omitted. Accordingly, in this embodiment, relative vertical movement between the first engaging portion and the second engaging portion is permitted.

[0133] The first engaging hook 310 of the seat limiting assembly 300 and the second engaging hook 410 of the base limiting assembly 400 engage with each other, such that as the seat body 100 moves relative to the mounting base 200 along a predetermined pitch adjustment path 130, the first engaging portion and the base limiting assembly 400 can move relative to each other. That is, the first engaging portion and the second engaging portion engage in a manner that allows for relative vertical movement.

[0134] More specifically, the first engagement portion includes a first engaging hook 310 disposed between the vertical portions 330 of the two seat limiting assemblies. The first engaging hook 310 extends laterally in an arc shape, has a hook-shaped cross-section, and is open at both lateral ends. Figure 19BAs shown, when viewed laterally, the first engaging hook 310 has a first longitudinal wall 316, a second longitudinal wall 317, a rear wall 318, and an open front side 319. The first longitudinal wall 316 is connected to the seat body 100, the second longitudinal wall 317 is located above the first longitudinal wall 316, the rear wall 318 is connected between the rear side of the first longitudinal wall 316 and the rear side of the second longitudinal wall 317, and the open front side 319 is opposite to the rear wall 318 and faces the seat body 100. The first engaging hook 310 is movable relative to the base limiting assembly 400 within a travel range and prevents the seat 1 from moving forward by abutting against the base limiting assembly 400 via the rear wall 318.

[0135] Accordingly, the second engagement portion includes a second engaging hook 410 positioned between the two vertical portions 510 of the push rods. Viewed laterally, the second engaging hook 410 has a third longitudinal wall 413, a fourth longitudinal wall 414, and an end wall 415, wherein the third longitudinal wall 413 is connected to the vertical portion 510 of the push rod, the fourth longitudinal wall 414 is located below the third longitudinal wall 413, and the end wall 415 connects the front side of the third longitudinal wall 413 and the front side of the fourth longitudinal wall 414. The second engaging hook 410 is movable relative to the seat limiting assembly 300 within a certain travel range, and the fourth longitudinal wall 414 abuts against the seat limiting assembly 300 to prevent the seat 1 from moving forward.

[0136] More specifically, the rear wall 318 of the first latch 310 can abut against the fourth longitudinal wall 414 of the second latch 410, and the second longitudinal wall 317 of the first latch 310 can abut against the end wall 415 of the second latch 410, thereby preventing the seat 1 from moving forward relative to the base 2.

[0137] In summary, this application provides a child safety seat that allows the seat body to move in a pitch-adjustable position while also engaging with a base. This limits forward movement of the seat body relative to the base during a vehicle collision, thereby improving safety performance. Furthermore, this application also allows the seat body to rotate between forward and rearward positions. According to the inventors' research, during a vehicle collision, the seat body moves forward relative to the base, causing significant displacement of the child's head. The connection mechanism of this application limits the movement of the seat body relative to the base, improving the safety performance of the child safety seat.

[0138] Since this application can be embodied in various forms without departing from the spirit and substance of this application, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted in the broadest sense within the scope defined by the claims. Therefore, all variations falling within the scope of the claims or their equivalents should be covered by the claims.

Claims

1. A child safety seat, comprising: Base (2), including base limiting component (400); as well as Seat (1), disposed above the base (2), includes: Mounting base, disposed above the base (2); A seat body (100) is disposed above the mounting base and is movable relative to the mounting base along a pitch adjustment path (130); and A seat limiting assembly (300) is disposed on the seat (1) and connected to the seat body (100). The base limiting component (400) engages with the seat limiting component (300) to restrict the longitudinal movement of the seat body (100); The seat limiting assembly (300) includes: The vertical portion (330) of the seat limiting assembly extends upward from the mounting base (200); A first engaging portion is disposed at the upper end of the vertical portion (330) of the seat limiting assembly. When the seat body (100) rotates to a limiting angle, the first engaging portion engages with the base limiting assembly (400); and The body connecting part (350) is connected between the seat body (100) and the vertical part (330) of the seat limiting assembly, and the body connecting part (350) is pivotally connected to the seat body (100).

2. The child safety seat according to claim 1, characterized in that: The mounting base (200) is a swivel base, which is positioned above the base (2) in a manner that allows the seat (1) to rotate relative to the base (2) about a generally vertical axis (210); The base limiting component (400) and the seat limiting component (300) are configured such that when the seat body (100) is rotated to the forward position, the base limiting component (400) engages with the seat limiting component (300) to restrict the longitudinal movement of the seat body (100) in the generally front-back direction.

3. The child safety seat according to claim 2, characterized in that: in, The base limiting component (400) is disposed on the longitudinal rear edge of the base (2).

4. The child safety seat according to claim 2, characterized in that: The seat (1) rotates relative to the base (2) between a forward position and a rearward position. In the forward position, the backrest (120) of the seat (1) is close to the rear side of the base (2), and in the rearward position, the backrest (120) of the seat (1) is close to the front side of the base (2). The pitch adjustment path (130) includes the bottom (110) of the seat (1) moving approximately back and forth along a longitudinal curve (131) and the backrest (120) of the seat (1) moving approximately up and down along a vertical forward tilt curve (132).

5. The child safety seat according to claim 1, characterized in that: The seat limiting component has two vertical parts (330), which are symmetrically arranged with respect to the backrest (120) of the seat (1) in the circumferential direction and extend upward along the backrest (120); the body connecting part (350) has two parts, which are respectively connected to the corresponding seat limiting component vertical parts (330).

6. The child safety seat according to claim 5, characterized in that: The first engagement portion includes a first engaging hook (310) that is laterally mounted between the vertical portions (330) of the two seat limiting components. The first engaging hook (310) includes an engaging portion (309) that extends laterally, has a hook-shaped cross-section, and is open at both laterally ends.

7. The child safety seat according to claim 6, characterized in that: The first engaging hook (310) also includes two bent portions (311), which extend from the two transverse ends of the engaging portion (309) toward the longitudinal front, and the free end of each bent portion (311) is fixedly engaged to the upper end of the corresponding seat limiting component vertical portion (330).

8. The child safety seat according to claim 7, characterized in that: The engaging portion (309) has a first vertical wall (312), a second vertical wall (313), a bottom wall (314), and an open top side (315), wherein the bent portion (311) extends longitudinally forward from both lateral ends of the first vertical wall (312), the second vertical wall (313) is located behind the first vertical wall (312), the bottom wall (314) is connected between the bottom side of the first vertical wall (312) and the bottom side of the second vertical wall (313), and the open top side (315) is opposite to the bottom wall (314). The engaging portion (309) engages with the base limiting assembly (400), such that the second vertical wall (313) abuts against the base limiting assembly (400) to prevent the seat (1) from moving forward.

9. The child safety seat according to claim 5, characterized in that: The main body connecting part (350) includes a crossbar (351) and a connecting rod (352). The crossbar (351) is horizontally mounted between the vertical parts (330) of the two seat limiting components. The connecting rod (352) extends in a generally longitudinal direction, and the two ends of the connecting rod (352) are pivotally connected to the crossbar (351) and the seat body (100), respectively.

10. The child safety seat according to claim 9, characterized in that: Two connecting rods (352) are provided, and each connecting rod (352) is provided with an extension hole (352a) extending in the same direction as the connecting rod (352). The crossbar (351) passes through the extension hole (352a) and is pivotally connected to the connecting rod (352), and the crossbar (351) can move relative to the connecting rod (352a).

11. The child safety seat according to claim 5, characterized in that: The first engagement portion includes a hook-shaped portion (320) that extends in a hook shape from the upper end of the vertical portion (330) of the seat limiting assembly to engage the base limiting assembly (400).

12. The child safety seat according to claim 11, characterized in that: The hook-shaped portion (320) includes a longitudinal extension (321) extending rearward from the upper end of the vertical portion (330) of the seat limiting assembly and a vertical extension (322) extending upward from the rear end of the longitudinal extension (321), the vertical extension (322) engaging with the base limiting assembly (400) to restrict the seat (1) from moving forward.

13. The child safety seat according to claim 12, characterized in that: The hook-shaped part (320) and the vertical part (330) of the seat limiting assembly are integrally formed fixing plates; The seat limiting assembly (300) also includes a shock absorber (360) which is attached to the lateral sides of the hook portion (320) and has a generally similar outer contour shape to the hook portion (320).

14. The child safety seat according to claim 1 or 5, characterized in that: The base (2) includes: Two vertical top rods (510) are symmetrically arranged with respect to the base (2) and extend upward from the longitudinal rear edge of the base (2); and The second joint is mounted between the two vertical parts of the top rod (510) and is connected to the seat limiting assembly (300).

15. The child safety seat according to claim 14, characterized in that: The second joint includes a second engaging hook (410) positioned between the two top rod vertical portions (510), the second engaging hook (410) extending laterally, having a hook-shaped cross-section, and being open at both lateral ends.

16. The child safety seat according to claim 15, characterized in that: The second joint also includes a reinforcing member (420) that is laterally mounted between the two top rod vertical portions (510). The second locking hook (410) is a base locking piece and is attached to the bottom side of the reinforcing member (420).

17. The child safety seat according to claim 1, characterized in that: During the movement of the seat body (100) along the pitch adjustment path (130), the seat (1) and the base (2) are engaged by the seat limiting assembly (300) and the base limiting assembly (400), and the relative position between the first engagement portion of the seat limiting assembly (300) and the second engagement portion of the base limiting assembly (400) remains approximately unchanged.

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