Child safety seat

Abstract

The invention discloses a child safety seat which comprises a seat body and a top tying belt mechanism, the top tying belt mechanism is connected to a backrest portion of the seat body, the top tying belt mechanism comprises an upper pulling belt assembly, a lower pulling belt assembly and a lower pulling belt assembly, one end of the upper pulling belt assembly is connected to the seat body, and the other end of the upper pulling belt assembly is provided with a clamping piece used for clamping a vehicle seat; the retaining part is connected with a seat body and the upper drawstring assembly, the retaining part is an elastic part and exerts upward force on the upper drawstring assembly, so that the retaining part can support the upper drawstring assembly to protrude upwards relative to the child safety seat, and when the upper drawstring assembly is in a loose state, the upper drawstring assembly is separated from the upper drawstring assembly. The retainer can support the upper drawstring assembly to protrude upwards relative to the backrest part; when the upper drawstring assembly is in a tensioned state, the upper drawstring assembly can abut against the retaining piece, so that the retaining piece is elastically deformed.

Description

Technical Field

[0001] This application relates to the field of infant and toddler products technology, and in particular to a top harness mechanism and a child safety seat incorporating the same. Background Technology

[0002] Currently, relying solely on car seat belts and ISOFIX anchoring devices to restrain child safety seats is insufficient to meet children's safety needs. Therefore, an additional top strap is required to ensure safety. However, many users forget to fasten the top strap when using child safety seats, which compromises the child's safety. Consequently, there is an urgent need for a lower-cost and more stable structure to improve the use of the top strap in child safety seats. Summary of the Invention

[0003] The present invention provides a child safety seat, which includes a seat body and a top strap mechanism, the top strap mechanism being connected to the backrest of the seat body.

[0004] The top tether mechanism includes:

[0005] The upper pull strap assembly has one end connected to the seat body and the other end provided with a locking element for engaging the vehicle seat; and

[0006] A retainer, which connects the seat body and the upper tether assembly respectively, is an elastic member that applies an upward force to the upper tether assembly so that the retainer can support the upper tether assembly protruding upward relative to the child safety seat.

[0007] When the pull-up strap assembly is in a relaxed state, the retainer can support the pull-up strap assembly to protrude upward relative to the backrest; when the pull-up strap assembly is in a tensioned state, the pull-up strap assembly can press against the retainer, causing the retainer to undergo elastic deformation.

[0008] In one embodiment, the retainer includes a fixed section and a support section connected to the fixed section. The fixed section is connected to the backrest. When the top strap mechanism is in a slack state, the support section extends upward from the upper edge of the backrest and supports the pull strap assembly.

[0009] In one embodiment, the support segment includes a first curved segment that warps backward from the upper edge toward the backrest.

[0010] In one embodiment, the support segment includes a second curved segment that extends forward toward the backrest, thereby keeping the pull strap assembly in front of the backrest.

[0011] In one embodiment, a mounting groove and an upper pull strap through groove are formed from the upper edge of the backrest portion, and the fixing segment is inserted into the mounting groove; the upper pull strap assembly passes through the upper pull strap through groove; the width of the top of the mounting groove is greater than the width of the bottom, so as to form a guide space for the retainer at the top of the mounting groove.

[0012] In one embodiment, the mounting groove is inclined forward from bottom to top, the fixing segment is inclinedly inserted into the mounting groove along the mounting groove, and the top of the mounting groove is provided with a rearward protruding abutment. The abutment abuts against the rearward warping of the supporting segment, so that the extending directions of the fixing segment and the supporting segment are different.

[0013] In one embodiment, the backrest includes a fastener connected to the backrest body, the fixing segment is connected to the backrest body via the fastener, the fixing segment includes a mounting ring, the backrest body includes an outer shell and an inner shell, the outer shell and the inner shell are connected together to form an inner cavity, the backrest body also includes a locking post protruding from one of the outer shell and the inner shell into the inner cavity, the mounting ring is sleeved on the locking post and locked by the fastener, the upper edge includes a mounting groove leading to the inner cavity, and a retainer extends outward from the mounting groove.

[0014] In one embodiment, the pull-up strap assembly includes a webbing and a length adjustment member, wherein a first end of the webbing is connected to the backrest and a second end is provided with the locking member;

[0015] The length adjustment element is threaded onto the webbing and is used to adjust the length of the webbing;

[0016] The support section is connected to the webbing or the length adjustment member.

[0017] In one embodiment, the pull-up strap assembly is Y-shaped and includes a webbing and a fastener threaded on the webbing;

[0018] The engaging component divides the webbing into a first webbing segment and a second webbing segment connected to the first webbing segment. The first webbing segment and the second webbing segment are respectively connected to opposite sides of the backrest.

[0019] The first webbing segment is provided with a length adjustment member, and the retaining member is connected to the first webbing segment.

[0020] In one embodiment, the retainer is at least one of a compression spring, a tension spring, a herringbone spring, a leaf spring, and a gooseneck tube;

[0021] Wherein, the support section is sewn onto the upper pull strap assembly; or

[0022] The pull tab assembly has a pocket, and the support segment fits into the pocket.

[0023] In one embodiment, the seat body further includes a top rod disposed behind the backrest, and one end of the pull strap assembly is connected to the top rod of the seat body.

[0024] The retainer includes a fixed section and a support section connected to the fixed section. The fixed section is connected to the top rod, and the support section extends upward from the upper end of the top rod and is used to support the pull strap assembly. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the various components are shown as examples only and not necessarily to scale. In the accompanying drawings:

[0027] Figure 1 A perspective view of a child safety seat, viewed from the backrest as shown in the present invention, is schematically illustrated according to an embodiment of the present invention, wherein the top strap mechanism is connected to the car seat;

[0028] Figure 2 The illustration schematically shows a perspective view of a child safety seat viewed from the front to the backrest according to an embodiment of the present invention, wherein the top harness mechanism is not connected to the car seat;

[0029] Figure 3 The diagram schematically shows a left view of a child safety seat according to an embodiment of the present invention, wherein the top harness mechanism is in a warped state relative to the headrest.

[0030] Figure 4 A schematic front view of a child safety seat according to an embodiment of the present invention is shown;

[0031] Figure 5 A top view of a child safety seat according to an embodiment of the present invention is shown schematically;

[0032] Figure 6 A perspective view and a partial enlarged view of a child safety seat according to an embodiment of the present invention are schematically shown, wherein the backrest housing has been removed.

[0033] Figure 7A perspective view and a partial enlarged view of a child safety seat according to an embodiment of the present invention are schematically shown, wherein the retainer is not yet connected to the backrest.

[0034] Figure 8 Schematic illustration Figure 4 The child safety seat shown is a cross-sectional view along section line AA and a partial enlarged view thereof;

[0035] Figure 9 A top view of a child safety seat according to yet another embodiment of the present invention is shown schematically;

[0036] Figure 10 A schematic rear view of a child safety seat according to an embodiment of the present invention is shown, wherein the retainer is removed;

[0037] Figure 11 A perspective view of a child safety seat according to an embodiment of the present invention is shown schematically, wherein the retainer is a spring.

[0038] Figure 12 A perspective view of a child safety seat according to another embodiment of the present invention is shown, wherein the retainer extends parallel to the headrest.

[0039] Figure 13 A side view of a child safety seat according to yet another embodiment of the present invention is shown, wherein the retainer is bent relative to the headrest; and

[0040] Figure 14 A retainer is schematically shown according to an embodiment of the present invention.

[0041] Figure 15 A side view and a partial enlarged view of a child safety seat according to another embodiment of the present invention are schematically shown, wherein the backrest housing is removed and the upper strap assembly is connected to the fixing rod.

[0042] Figure 16 An exploded view of a child safety seat according to yet another embodiment of the present invention is shown schematically.

[0043] Figure 17 Schematic illustration Figure 12 The child safety seat shown is a cross-sectional view along section line BB, in which the retainer and backrest housing are detached from the child safety seat.

[0044] Figure 18 The diagram schematically shows a left view of a child safety seat according to an embodiment of the present invention, wherein the top harness mechanism is in a tensioned state;

[0045] Figure 19A schematic diagram of a child safety seat according to an embodiment of the present invention is shown, wherein the top harness mechanism is in a tensioned state;

[0046] Figure 20 Schematic illustration Figure 12 The child safety seat shown is shown in a cross-sectional view and a partial enlarged view along the section line BB.

[0047] Figure label:

[0048] Child safety seat 1000; headrest 1;

[0049] Backrest 2, backrest body 20, upper edge 202, mounting groove 2021, top abutment 2021A, guide space 2021B, upper pull strap through groove 2022, first through groove section 2022A, second through groove section 2022B, third through groove section 2022C, outer shell 203, inner shell 204, locking pin 2041, locking hole 2041A, receiving part 2042, inner surface 2043, inner cavity 205, fastener 206, support frame 207, groove 2071, fixing rod 21, side wing plate 22;

[0050] 3. Seat 3; ISOFIX connector 31;

[0051] Top drawstring mechanism 4, pull strap assembly 41, webbing 411, first webbing segment 4111, second webbing segment 4112, pocket 415, fastener 412, protective sleeve 413, length adjustment element 414, display window 4140, retainer 42, fixing segment 421, mounting ring 4211, support segment 422, first bending segment 4221, second bending segment 4222, fixing part 423, retaining part 424, indicator 43, first indicator area 431, second indicator area 432. Detailed Implementation

[0052] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0053] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0055] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] A top tether is an attachment used to secure a child safety seat, designed to improve seat stability and reduce forward rotation in a collision. The top tether is a flexible webbing or cord extending from the top of the child seat. One end has a hook that connects to an anchor point inside the car, and the other end is secured to the back or top of the child safety seat's backrest. When not in use, the top tether hangs naturally along the rear side of the backrest and is concealed by it. Therefore, when caregivers remove the child safety seat from its packaging or install it in the car seat, they sometimes overlook the top tether, failing to attach it to the anchor point and creating a safety hazard. Alternatively, some child safety seats use electronic alarms to remind caregivers to attach the top tether, but existing electronic alarms are expensive and not always reliable.

[0057] Figures 1 to 8 and Figure 10 A child safety seat 1000 according to an embodiment of the present invention is illustrated schematically. The child safety seat 1000 of this embodiment includes a seat body 100 and a top strap mechanism 4 connected to the seat body 100. One end of the top strap mechanism 4 is connected to the seat body 100. The seat body 100 and the top strap mechanism 4 will be described in conjunction with the child safety seat 1000 described below.

[0058] refer to Figure 1 and Figure 4The seat body 100 includes a headrest 1, a backrest 2, and a seat 3. One end of the backrest 2 is connected to the headrest 1, and the other end is connected to the seat 3. The headrest 1 is located in front of the backrest 2. The headrest 1 can be slidably connected to the backrest 2, thereby adjusting the extension length of the headrest 1 relative to the backrest 2 in the longitudinal direction to accommodate children of different ages. The seat 3 may include an ISOFIX connector 31. The ISOFIX connector 31 is located approximately at the rear end of the seat 3 and can be connected to a car seat. Alternatively, the seat 3 may not include the ISOFIX connector 31 and may be secured to the car seat by a car seat belt.

[0059] The top strap mechanism 4 includes an upper tether assembly 41 and a retainer 42. The upper tether assembly 41 may include a webbing 411. One end of the upper tether assembly 41 is a fixed end, which is fixedly connected to the backrest 2 of the child safety seat 1000 by means of sewing or the like. The other end is a free end, which is provided with a hook or other connecting member. The upper tether assembly 41 can be detachably connected to the anchor point of the car seat through the connecting member at the free end. In addition, the upper tether assembly 41 may also be provided with a length adjusting member 414 for adjusting the length of the webbing 411.

[0060] Reference Figure 1 as well as Figures 4 to 8 When the top strap assembly 41 is connected to the car seat and its length is adjusted to tension, the top strap mechanism 4 is in use (see...). Figure 1 The top tether mechanism 4 helps secure the child safety seat 1000 to the car seat. (Reference) Figure 2 and 3When the upper strap assembly 41 is not connected to the car seat, the top strap mechanism 4 is in a relaxed state and hangs down naturally. The retainer 42 is an elastic member and is connected to both the seat body 100 and the upper strap assembly 41. When the upper strap assembly 41 is in a relaxed state (i.e., not connected to the car seat), the retainer 42 applies an upward force to the upper strap assembly 41, thereby supporting the upper strap assembly 41 so that the upper strap assembly 41 protrudes upward relative to the backrest 2, so that when a caregiver looks from the front towards the backrest 2, at least a portion of the upper strap assembly 41 can be observed not to be obscured by the backrest 2. When the upper strap assembly 41 is adjusted to a tensioned state, for example by the length adjustment member 414, the upper strap assembly 41 can press against the retainer 42, causing the retainer 42 to elastically deform. The upward protrusion of the upper pull strap assembly 41 relative to the backrest 2 means that the retainer 42 supports the upper pull strap assembly 41 so that it protrudes along the length of the backrest body 20 on the side where the backrest body 20 is connected to the headrest 1. In some embodiments, the upper pull strap assembly 41 can be configured such that it is visible when looking from the front towards the backrest 2 when the headrest 1 is adjusted to be no higher than the backrest 2. In some embodiments, the upper pull strap assembly 41 can be configured such that it is visible when looking from the headrest 1 towards the backrest 2 within the sliding range of the headrest 1 relative to the backrest 2. In one embodiment, the headrest 1 is slidably connected to the backrest 2, and when the headrest 1 slides to the highest point it can move on the backrest 2, the upper pull strap assembly 41 is visible when looking from the headrest 1 towards the backrest 2. In this embodiment, the top strap assembly 41 is held in a state of protruding upward relative to the backrest 2 by the retainer 42, preventing it from being covered by the backrest 2 when not in use, thereby reminding the caregiver to connect the top strap mechanism 4 to the car seat.

[0061] refer to Figure 3 , Figures 6 to 8 The retainer 42 includes a fixing section 421 and a support section 422 connected to the fixing section 421. The fixing section 421 may be integrally formed with the support section 422 or otherwise connected together. The backrest 2 includes a backrest body 20 and left and right side wing plates 22 extending from the backrest 2 to the left and right sides. The fixing section 421 may be connected to the backrest body 20 or the side wing plates 22, which is not limited here. When the top strap mechanism 4 is in a relaxed state, the support section 422 extends upward from the upper edge 202 of the backrest body 20 and is used to support the pull strap assembly 41. The upper edge 202 of the backrest body 20 is the circumferential edge of the backrest body 20 on the side where the backrest 2 is connected to the headrest 1. However, although the retainer 42 shown in the figure is connected to the backrest body 20 of the backrest 2, the invention is not limited thereto. Those skilled in the art will understand that the retainer 42 may also be connected to the headrest 1. Exemplarily, when the retainer 42 is connected to the headrest 1, the shape of the retainer can be referred to Figure 14 As shown, one end of the retainer 42 forms a fixing part 423 connected to the headrest 1, and the other end forms a ring-shaped or C-shaped retaining part 424, which is positioned higher than the headrest 1. The retaining part 424 is fitted onto the upper pull strap assembly 41. When the headrest 1 moves up and down relative to the backrest 2, the retaining part 424 drives the upper pull strap assembly 41 to move up and down, so that the upper pull strap assembly 41 is not obstructed by the headrest 1. When the top strap mechanism 4 is in a relaxed state, the retainer 42 can support the upper pull strap assembly 41 so that it protrudes upward relative to the backrest 2, so that the upper pull strap assembly 41 can be observed when looking from the front towards the backrest 2. The "looking from the front towards the backrest 2" mentioned in this application includes the angle at which the caregiver observes the child safety seat 1000 when standing directly in front of or to the side of the child safety seat 1000. In this embodiment, since the retainer 42 can support the top strap assembly 41 to protrude upward relative to the backrest 2, the top strap mechanism 4 can be easily observed by the caregiver when standing directly in front of or to the side of the child safety seat 1000.

[0062] Figure 3 , Figure 12 and Figure 13 Several exemplary forms of the support segment 422 of the retainer are shown. For example... Figure 3 In the illustrated embodiment, the support segment 422 includes a first curved segment 4221, which can bend from the upper edge 202 of the backrest 2 toward the rearward and upward direction, thereby keeping the upper pull strap assembly 41 in a protruding state relative to the backrest 2 to alert the caregiver to use the top strap mechanism 4. When the child safety seat 1000 is placed on the car seat, the support segment 422 of the retainer 42 is pressed against the back of the car seat and bends vertically, thereby pulling the upper pull strap assembly 41 upward, making it more noticeable to the caregiver. At the same time, this arrangement guides the bending direction of the retainer 42, preventing swaying and bending to the left or right, which would cause the upper pull strap assembly 41 to be obscured by the headrest 1. Optionally, a guide space 2021B for the rearward bending of the retainer 42 is formed at the top of the mounting groove 2021, the specific structure of which is described below. Figure 13In the illustrated embodiment, the retainer 42 further includes a second curved section 4222. The support section 422 includes a first curved section 4221 and a second curved section 4222. The first curved section 4221 extends upward from the upper edge 202 and extends a distance toward the rear of the backrest 2. The second curved section 4222 is connected to the first curved section 4221 and curves toward the front of the backrest 2, thereby keeping the top strap assembly 41 in an upwardly curved state relative to the backrest 2 to remind the caregiver to use the top strap mechanism 4. A portion of the first curved section 4221 may be located behind the backrest 2. Alternatively, a portion of the second curved section 4222 may be located in front of the backrest 2 or the headrest 1. When the child safety seat 1000 is placed on the car seat, the backrest of the car seat moves forward against the first curved portion 4221 of the retainer 42. The retainer 42 includes a second curved segment 4222 that curves towards the headrest 1, allowing a portion of the pull strap assembly 41 to naturally droop down in front of the headrest 1, thus reminding the caregiver to install the pull strap assembly 41. In other embodiments, the retainer 42 may also include only the second curved segment 4222, with the length and angle of the second curved segment 4222 configured to allow a portion of the pull strap assembly 41 to droop down in front of the headrest 1. Figure 12 In the illustrated embodiment, the support segment 422 can also be configured to extend substantially straight along the length of the backrest 2, thereby keeping the top strap assembly 41 upright relative to the backrest 2. For example, the retainer 42 is a cylindrical compression spring, and the fixing segment 421 of the retainer 42 can be vertically inserted into the backrest 2. The support segment 422 is integrally formed with the fixing segment 421 and is configured to extend substantially straight along the length of the backrest 2. The retainer 42 configured in this way can support the top strap assembly 41 so that one end is vertical and higher than the backrest 2, to prevent the caregiver from forgetting to connect the top strap mechanism 4 to the car seat.

[0063] The retainer 42 can be a compression spring, tension spring, herringbone spring, spring sheet, or gooseneck tube, or other forms, as long as it can support the upper pull strap assembly 41 of this embodiment so that it protrudes upward relative to the backrest 2 when not in use.

[0064] See Figures 1 to 8 In this embodiment, the retainer 42 is a long, strip-shaped compression spring. The lower end of the retainer 42 is fixed to the top of the housing of the backrest 2, and the upper end extends upwards towards the backrest 2. The upper end of the retainer 42 is sewn onto the upper pull strap assembly 41 to support a portion of the webbing near the fixed end of the upper pull strap assembly 41 protruding upwards from the backrest 2. See also... Figure 2 and 3 When the pull strap assembly 41 is in an unused state, the support section 422 of the retainer 42 supports a portion of the pull strap assembly 41 above the backrest 2, thereby alerting the user. See also Figure 1 and Figure 4-8 When the upper pull strap assembly 41 is in use, that is, when the free end of the upper pull strap assembly 41 is engaged in the car seat and the length of the upper pull strap assembly 41 is adjusted to tension the upper pull strap assembly 41, the support section 422 of the retainer 42 undergoes elastic deformation under the compression of the upper pull strap assembly 41 and bends along the direction of extension of the upper pull strap assembly 41 (see...). Figure 1 This avoids hindering the normal installation of the pull-up strap assembly 41.

[0065] See Figure 12 , 15 In the embodiments shown up to 20, the retainer 42 can also be a tension spring. The lower end of the retainer 42 is fixed to the inner housing 204 of the backrest 2, and the upper end of the retainer 42 is inserted into the length adjusting member 414. See also Figure 18 When the pull-up strap assembly 41 is in an unused state, the support section 422 of the retainer 42 supports a portion of the pull-up strap assembly 41 above the backrest 2, thus making it visible to the caregiver. See also Figure 12 , 15 At points 17 and 20, by adjusting the length adjusting member 414 to tension the upper pull belt assembly 41, the support section 422 of the retainer 42 is compressed toward the lower end of the retainer 42 under the pressure of the upper pull belt assembly 41, thereby avoiding obstruction of the normal installation of the upper pull belt assembly 41.

[0066] In one or more embodiments, such as Figure 11 and Figure 14 As shown, the retainer 42 can also be a spring made of metal or rubber. The fixing segment 421 of the retainer 42 is connected to the upper edge 202 of the backrest 2. Exemplarily, the retainer 42 can be fixed by means of insertion, riveting, or detachable means of engagement. The support segment 422 is connected to the fixing segment 421 and includes a retaining portion 424. The retaining portion 424 is annular and sleeved on the upper pull strap assembly 41 to prevent the upper pull strap assembly 41 from detaching from the retaining portion 424. Applying pressure to the support segment 422 can cause the support segment 422 to bend forward toward the backrest 2, reducing the height of the child safety seat 1000, which helps save space in the packaging box when the child safety seat 1000 is packaged as a whole. When the pressure is released, for example, when the child safety seat 1000 is removed from the packaging, the retainer 42 will spring upward as the pressure applied to it by the packaging is removed. This causes a portion of the top tether assembly 41 to protrude from the backrest 2, thereby drawing the caregiver's attention and reminding them to install the top tether mechanism 4. (Reference) Figure 6 and Figure 7In this embodiment, the backrest 2 includes a fastener 206 connected to the backrest body 20, and the fixing segment 421 is connected to the backrest body 20 via the fastener 206. The fastener 206 can be a rivet, bolt, screw, etc., as long as it can connect the fixing segment 421 to the backrest body 20. The fixing segment 421 includes a mounting ring 4211, and the backrest body 20 includes an inner cavity 205 and a locking post 2041 protruding into the inner cavity 205. The mounting ring 4211 is sleeved on the locking post 2041 and locked by the fastener 206. The upper edge 202 includes a mounting groove 2021 leading to the inner cavity 205, and the retainer 42 extends out from the mounting groove 2021. Specifically, the backrest body 20 may include an outer shell 203 facing away from the headrest 1 and an inner shell 204 facing the headrest 1. The outer shell 203 and the inner shell 204 may be joined together (e.g., by snap-fit, threaded connection, riveting, or other means) to form an inner cavity 205 backing the body 20. The retaining segment 421 may include a mounting ring 4211. For example, the retainer 42 may be a tension spring, and the mounting ring 4211 may be a loop formed by winding the end wire of the tension spring. The inner shell 204 may include a locking post 2041 protruding from the inner surface 2043 of the inner shell (facing the outer shell 203) toward the outer shell 203. The mounting ring 4211 may be fitted onto the locking post 2041. The locking post 2041 includes a locking hole 2041A into which a fastener 206 can be inserted to engage with the locking post 2041, thereby locking the mounting ring 4211 onto the locking post 2041. The inner housing 204 may further include a receiving portion 2042 communicating with the inner cavity 205. The retainer 42 is secured to the back of the main body 20 by a mounting ring 4211, extends through the receiving portion 2042, and then protrudes from the mounting groove 2021. The receiving portion 2042 prevents the retainer 42 from wobbling. Although... Figure 6 As shown, the locking pin 2041 is configured to protrude from the inner surface 2043 of the inner housing 204 toward the outer housing 203, and the locking pin 2041 can also be configured to protrude from the outer housing 203 toward the outer housing 203. Furthermore, although as... Figure 6 As shown, the inner housing 204 includes a receiving portion 2042. The inner housing 204 may also exclude the receiving portion 2042 and further fix the fixing segment 421 by other means, such as adhesive or snap-fit.

[0067] In one or more other embodiments, the retainer 42 may also be connected to the backrest 2 by welding, riveting, bonding, or plugging. In one or more embodiments, the upper pull strap assembly 41 may be provided with a pouch-shaped positioning structure, in which the upper end of the retainer 42 is detachably inserted (not shown); in still other embodiments, the lower end of the upper pull strap assembly 41 is provided with a locking groove, which overlaps the backrest 2 so that the caregiver can remove the retainer 42 when it is not needed.

[0068] See Figure 5 , Figure 6 and Figure 8 The pull-up strap assembly 41 is in a straight line shape and includes a webbing 411 and a length adjustment member 414. The first end of the webbing 411 is connected to the backrest 2, and the second end can be connected to the car seat. Figure 10 As shown, without the retainer 12 installed, due to the softness of the webbing 411, it lies directly on the seat body 100, making it difficult for caregivers to notice the top strap mechanism 4, and thus they may easily forget to connect it to the car seat. The retainer 42 includes a fixing section 421 and a support section 422 connected to the fixing section 421. The fixing section 421 is connected to the backrest body 2, and when the top strap mechanism 4 is in a relaxed state, the support section 422 extends upward from the upper edge 202 of the backrest body 20 and connects to the webbing 411. A first end of the webbing 411 can be fixedly or detachably connected to the backrest 2, and a second end can be directly connected to the car seat (e.g., strapped to the car seat) or connected to the car seat via other components. The backrest 2 may include a fixing rod 21 (see 15 and 16). A first end of the webbing 411 is connected to the fixing rod 21, and a second end of the webbing 411 is connected to the car seat. The backrest body 20 may include an outer shell 203 facing away from the headrest 1 and an inner shell 204 facing the headrest 1. The outer shell 203 and the inner shell 204 may be connected together (e.g., by snap-fit, threaded connection, riveting, or other means) to form an inner cavity 205 of the backrest body 20. A fixing rod 21 is received in the inner cavity 205 and connected to the backrest body 20. The upper edge 202 of the backrest 2 has an upper pull strap through groove 2022 for mounting a webbing 411 and a mounting groove 2021 for mounting a retainer 42, which leads to the inner cavity 205. The mounting groove 2021 is inclined forward from bottom to top, and the fixing section 421 is inserted into the mounting groove 2021 at an incline. The top of the mounting groove 2021 has a rearwardly protruding abutment 2021A, which abuts the supporting section 422 and warps backward, thereby providing a preset tension to the retainer 42. The first end of the webbing 411 is connected to the fixing rod 21 and extends from the inner cavity 205 through the top 2021A and is supported by the support section 422.

[0069] See Figure 4 , Figure 6 and Figure 10The second end of the webbing 411 can be directly connected to the car seat (not shown) or connected to the car seat via other components. The pull strap assembly 41 may include a latch 412, which is adjustablely connected to the second end of the webbing 411 so that the webbing 411 can be moved via the latch 412 by pulling the second end of the webbing 411, thereby adjusting the length of the webbing 411 between the latch 412 and the backrest 2. The latch 412 can be a hook or other form, as long as it can connect the webbing 411 to the car seat.

[0070] See Figure 8 The figure illustrates the connection between the webbing 411 and the retainer 42. The top drawstring assembly 41 may also include a pocket 415 connected to the webbing 411. The pocket 415 may be sewn, glued (e.g., heat-fused) to the webbing 411, or it may be integrally formed with the webbing 411 (e.g., by weaving the webbing 411 to form the pocket 415). The pocket 415 may be made of the same material as the webbing 411 or a different material. The fixing section 421 is connected to the backrest 2, and the support section 422 may be enclosed in the pocket 415, thereby covering the entire retainer 42 and making the top drawstring mechanism 4 more aesthetically pleasing. The fixing section 421 may also be detachably connected to the backrest 2, and the support section 422 may be fitted in the pocket 415, thereby facilitating the replacement, maintenance, or removal of the retainer 42. The top drawstring assembly 41 may also include a protective sleeve 413. The protective sleeve 413 is accommodated in the pocket 415 and fits over the support section 422. The retainer 42 can be an elastic element, and the protective sleeve 413 can be flexible, such as a soft rubber sleeve, so that when the webbing 411 is moved to tension it, the protective sleeve 413 can be compressed together with the retainer 42. The protective sleeve 413 can prevent the retainer 42 from rubbing against the pocket 415, thereby making the webbing 411 sturdy and durable. In other embodiments, the retainer 42 can also be sewn onto the webbing 411.

[0071] See Figure 4 , Figure 5 and Figure 6 The length adjustment element 414 is adjustablely connected to the webbing 411 to control the length of the webbing 411. See also Figure 6The support segment 422 can be connected to the length adjusting member 414. For example, the support segment 422 can be connected to the length adjusting member 414 by adhesive, hook, snap, etc. Operating the length adjusting member 414 to adjust the length of the webbing 411 connected between the backrest 2 and the length adjusting member 414 can tension or loosen the webbing 411. When the length adjusting member 414 is operated to tension the webbing 411, the retaining member 42 can be configured to bias the length adjusting member 414 in the direction that loosens the webbing 411. Furthermore, although the length adjusting member 414 is shown in the figure, this embodiment can be implemented without the length adjusting member 414. When the pull strap assembly 41 does not include the length adjusting member 414, as described above, the support segment 422 can be connected to the webbing 411.

[0072] See Figure 1 , Figure 5 and Figure 9 The length adjustment member 414 may include a display window 4140. The top strap mechanism 4 may also include an indicator 43. The indicator 43 includes a first indicator area 431 and a second indicator area 432. When the webbing 411 is pulled to tension it between the backrest 2 and the length adjustment member 414, the first indicator area 431 of the indicator 43 faces the display window 4140, and when the webbing 411 is loosened to slack it between the backrest 2 and the length adjustment member 414, the second indicator area 432 of the indicator 43 faces the display window 4140. The first indicator area 431 and the second indicator area 432 may be displayed in different colors. For example, the first indicator area 431 may be displayed in green, and the second indicator area 432 may be displayed in red. Thus, by observing the display of indicator 43 in display window 4140, the caregiver can easily know the status of webbing 411, prompting the caregiver to tighten webbing 411 as needed, thereby further reminding the caregiver to connect the top strap mechanism 4 to the car seat. The first indicator area 431 and the second indicator area 432 can also be displayed in other ways, such as with text.

[0073] According to another embodiment of this application, see [link to relevant documentation]. Figure 9The pull-up strap assembly 41 can be Y-shaped. When the pull-up strap assembly 41 is Y-shaped, the webbing 411 can include a first webbing segment 4111 and a second webbing segment 4112 connected to the first webbing segment 4111. The first webbing segment 4111 can be integrally formed with the second webbing segment 4112 or otherwise connected together. The first webbing segment 4111 and the second webbing segment 4112 are respectively connected to opposite sides of the backrest portion 2. The first webbing segment 4111 and the second webbing segment 4112 can extend from opposite sides of the upper edge 202. The pull-up strap assembly 41 can be connected to the car seat between the first webbing segment 4111 and the second webbing segment 4112, for example, by means of a snap fastener 412, thereby making the pull-up strap assembly 41 generally Y-shaped. The retainer 42 is connected to and supports the webbing segment where the length adjusting member 414 is located, so that the webbing segment (shown as the first webbing segment 4111 in the figure) protrudes upward from the backing portion 2 and is supported by the retainer. Optionally, the top strap mechanism 4 may also include two retainers 42, which are respectively connected to the first webbing segment 4111 and the second webbing segment 4112.

[0074] According to another embodiment of this application, reference is made to... Figures 15 to 20 In this embodiment, a mounting groove 2021 is formed on the upper edge 202 of the backing portion 2 for the retaining member 42 to be inserted therein. Figure 16 , 17 As shown in Figure 20, the mounting groove 2021 extends forward from the upper edge 202 along the longitudinal direction (the length direction of the backrest 2) on the inner housing 204 of the backrest 2. The fixing section 421 is inserted into the mounting groove 2021 along the mounting groove 2021. See also... Figure 20 The retainer 42 is vertically inserted into the mounting groove 2021. The fixed end 422 and the support section 422 are integral parts and extend in the same direction. The top width of the mounting groove 2021 is greater than the bottom width. The top of the mounting groove 2021 is fan-shaped, and a guide space 2021B is formed at the top of the mounting groove 2021. Under the pressure of the webbing 411, the support section 422 of the retainer 42 can bend in the front-back direction to prevent the retainer 42 from bending in the left-right direction and being blocked by the headrest 1. It can also prevent the retainer 42 from being damaged due to excessive bending. The backrest 2 includes a support frame 207. The surface of the support frame 207 has a groove 2071 for accommodating the retainer 42, thus forming part of the mounting groove 2021. When the retainer 42 is inserted into the mounting groove 2021, the support frame 207 can lock and support the retainer 42 from back to front. The depth of the top of the groove 2071 in the support frame 207 is greater than the depth of the bottom, and the guide space 2021B is formed at the top of the groove 2071 in the support frame 207. The support frame 207 secures the end of the fixing section 421 to the inner housing 204 of the backing portion 2. Figure 16 and 17As shown, the fixing segment 421 may include a mounting ring 4211, and one end of the support frame 207 is fixed to the inner housing 204 by rivets. The other end of the support frame 207 is tilted forward to support the rearwardly warped support segment 422. In this embodiment, an upper pull strap groove 2022 is also formed on the upper edge 202 of the backrest 2 to allow the webbing 411 to pass through it. The upper pull strap groove 2022 is located on the front side of the mounting groove 2021. Optionally, the upper pull strap groove 2022 may also be located on the rear side of the mounting groove 2021, or the upper pull strap groove 2022 and the mounting groove 2021 may be the same groove. The upper pull strap groove 2022 extends from the upper edge 202 along the longitudinal direction on the inner housing 204 of the backrest 2. Figure 17 and 20 As can be seen, the upper pull strap groove 2022 extends in a zigzag pattern from the upper edge 202 toward the bottom of the backrest 2, thereby guiding the webbing 411 around the fixing section 421 and preventing the webbing 411 from getting tangled with the retainer 42. The upper pull strap groove 2022 may include three interconnected sections: the first groove section 2022A extends longitudinally from the fixing point of the webbing 411 to a position approximately at the same horizontal level as the fixing section 421 of the retainer 42; the second groove section 2022B extends laterally from the same horizontal level as the fixing section 421 of the retainer 42; and the third groove section 2022C slopes backward from the upper edge 202, thereby bringing the webbing 411 close to the retainer 42 above the backrest 2. The specific structure of the top tie mechanism 4 is basically the same as in the aforementioned embodiment and will not be described again here.

[0075] According to another embodiment of this application, a child safety seat 1000 is provided. The child safety seat 1000 of this embodiment includes a seat body 100 and a top strap mechanism 4, wherein the seat body 100 includes a base and a seat portion 3 mounted on the base. A backrest portion 2 is disposed on the seat portion 3. A top bar is provided at the rear end of the base for abutting against the backrest of the vehicle seat to prevent the child safety seat 1000 from rolling over. The top bar is located behind the backrest portion 2. One end of the top strap mechanism 4 is connected to the top bar. The top strap mechanism 4 includes an upper pull strap assembly 41 and a retainer 42. One end of the upper pull strap assembly 41 is connected to the upper end of the top bar, and the other end is provided with a hook for engaging the vehicle seat anchor point. One end of the retainer 42 is connected to the top bar, and the other end is connected to the upper pull strap assembly 41. The retainer 42 is an elastic member and applies an upward force to the upper pull strap assembly 41, thereby supporting the upper pull strap assembly 41 to protrude upward relative to the seat body 100, serving to alert the caregiver. The specific structure of the top strap mechanism 4 is basically the same as that of the aforementioned embodiment, and will not be described again here.

[0076] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0077] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A child safety seat, characterized in that The child safety seat comprises a seat body and a top harness mechanism connected to a backrest of the seat body, The top harness mechanism comprises: an upper pull strap assembly having one end connected to the seat body and the other end provided with a clamping member for clamping a vehicle seat; and a retaining member connected to the seat body and the upper pull strap assembly, respectively, the retaining member being an elastic member and applying an upward force to the upper pull strap assembly so that the retaining member can support the upper pull strap assembly to protrude upward relative to the child safety seat, When the upper pull strap assembly is in a relaxed state, the retaining member can support the upper pull strap assembly to protrude upward relative to the backrest; when the upper pull strap assembly is in a tensioned state, the upper pull strap assembly can press against the retaining member to cause the retaining member to elastically deform.

2. The child safety seat of claim 1, wherein, The retaining member comprises a fixed segment and a support segment connected to the fixed segment, the fixed segment being connected to the backrest, and the support segment extending upward from an upper end edge of the backrest and supporting the upper pull strap assembly when the top harness mechanism is in the relaxed state.

3. The child safety seat of claim 2, wherein, The support segment comprises a first curved segment curved away from the backrest in a rear direction.

4. A child safety seat according to claim 2 or 3, characterised in that, The support segment comprises a second curved segment extending forward toward the backrest so that the upper pull strap assembly is kept in front of the backrest.

5. The child safety seat according to claim 2, wherein an installation groove and an upper pull strap slot are formed in the upper end edge of the backrest, the fixed segment is inserted into the installation groove, and the upper pull strap assembly is inserted into the upper pull strap slot; a top portion of the installation groove has a width greater than that of a bottom portion to form a guide space for the retaining member at the top portion of the installation groove.

6. The child safety seat according to claim 5, wherein the installation groove is inclined forward from bottom to top, the fixed segment is obliquely inserted into the installation groove along the installation groove, a top portion of the installation groove is provided with a rearward protruding abutting portion, and the abutting portion abuts against the curved direction of the support segment in the rear direction to make the extension directions of the fixed segment and the support segment different.

7. The child safety seat of claim 2, wherein, The backrest comprises a fastener connected to a backrest body, the fixed segment is connected to the backrest body by the fastener, the fixed segment comprises an installation ring, the backrest body comprises an outer shell and an inner shell connected together to form an inner cavity, the backrest body further comprises a locking column protruding into the inner cavity from one of the outer shell and the inner shell, the installation ring is sleeved on the locking column and locked by the fastener, the upper end edge comprises an installation groove leading to the inner cavity, and the retaining member extends outward from the installation groove.

8. The top-tie mechanism of claim 1, wherein, The upper pull strap assembly comprises a webbing and a length adjustment member, the webbing has a first end connected to the backrest and a second end provided with the clamping member; the length adjustment member is inserted into the webbing to adjust the length of the webbing; the support segment is connected to the webbing or the length adjustment member.

9. The child safety seat of claim 1, wherein, The upper pull belt assembly is in Y shape, and comprises a belt and a clamping member arranged on the belt; The clamping member divides the belt into a first belt segment and a second belt segment connected to the first belt segment, and the first belt segment and the second belt segment are connected to opposite sides of the backrest respectively, A length adjusting member is arranged on the first belt segment, and the retaining member is connected to the first belt segment.

10. The child safety seat according to claim 1, wherein The retaining member is at least one of a compression spring, a tension spring, a fishbone spring, a spring piece and a gooseneck pipe; The support segment is sewn on the upper pull belt assembly; or The upper pull belt assembly is provided with a pocket, and the support segment is sleeved in the pocket.

11. The child safety seat of claim 1, wherein, The seat body further comprises a top rod arranged at the back of the backrest, one end of the upper pull belt assembly is connected to the top rod of the seat body, The retaining member comprises a fixed segment and a support segment connected to the fixed segment, the fixed segment is connected to the top rod, and the support segment extends upward from the upper end of the top rod and is used for supporting the upper pull belt assembly.

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