CN117507965A

CN117507965A - Seat structure with high-strength backrest and child safety seat

Info

Publication number: CN117507965A
Application number: CN202210902774.8A
Authority: CN
Inventors: 李如意
Original assignee: CHINA BAMBINO PREZIOSO CO LTD
Current assignee: CHINA BAMBINO PREZIOSO CO LTD
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2024-02-06

Abstract

The embodiment of the application discloses a seat structure with a high-strength backrest and a child safety seat, wherein the seat structure comprises a seat part, a backrest part and a backrest rear cover part; the backrest piece comprises a first reinforcing piece, a second reinforcing piece and a back plate, wherein the first reinforcing piece and the second reinforcing piece are arranged on the back plate at intervals, an opening is formed in the back plate and is positioned between the first reinforcing piece and the second reinforcing piece, and the back plate is connected with the seat piece; the back rest rear cover piece is arranged on the back plate and covers the opening. According to the embodiment of the application, the first reinforcing piece and the second reinforcing piece are arranged on the backboard, so that the strength of the backboard can be improved. In addition, the back plate is provided with the open holes, so that the overall weight of the seat structure can be reduced, and the seat structure has high strength and can keep lighter weight.

Description

Seat structure with high-strength backrest and child safety seat

Technical Field

The application relates to the field of safety seats, in particular to a child safety seat.

Background

In the related art, a backrest of a safety seat is provided with components such as a safety belt, and in order to facilitate assembly of the components, the backrest of the safety seat is usually provided with a plurality of detachable cover plates, and the cover plates are buckled on the backrest of the safety seat to protect or shield the components such as the safety belt. However, multiple cover panels can increase the weight of the safety seat.

Disclosure of Invention

The embodiment of the application provides a seat structure and a child safety seat with a high-strength backrest, which can improve the technical problem that the weight of the safety seat is heavy.

In a first aspect, embodiments of the present application provide a seat structure with a high strength backrest, including a seat member, a backrest member, and a backrest rear cover member; the backrest comprises a first reinforcing piece, a second reinforcing piece and a back plate, wherein the first reinforcing piece and the second reinforcing piece are arranged on the back plate at intervals, an opening is formed in the back plate and is positioned between the first reinforcing piece and the second reinforcing piece, and the back plate is connected with the seat unit; the backrest member is provided with an inner side surface and an outer side surface, the first reinforcing member and the second reinforcing member are arranged on the inner side surface, and the opening penetrates through the inner side surface and the outer side surface; the back rear cover member is fixed to an outer side face of the back plate, and covers the opening.

Based on the above embodiment, the strength of the back plate can be improved by providing the first reinforcing member and the second reinforcing member on the back plate. In addition, the back plate is provided with the open holes, so that the overall weight of the seat structure can be reduced, and the seat structure has high strength and can keep lighter weight.

In some exemplary embodiments, the first stiffener includes: a first longitudinal rib disposed on the back plate; the second longitudinal ribs are arranged on the back plate and are arranged at intervals with the first longitudinal ribs, and the first longitudinal ribs, the back plate and the second longitudinal ribs enclose to form a first containing cavity; the first transverse ribs are arranged at intervals, each first transverse rib is arranged on the back plate and located in the first containing cavity, and two ends of each first transverse rib are respectively connected with the first longitudinal rib and the second longitudinal rib; the second reinforcement includes: a third longitudinal rib disposed on the back plate; the fourth longitudinal rib is arranged on the back plate, the fourth longitudinal rib and the third longitudinal rib are arranged at intervals, and the third longitudinal rib, the back plate and the fourth longitudinal rib are enclosed to form a second containing cavity; the second transverse ribs are respectively arranged at intervals, each second transverse rib is arranged on the back plate and located in the second containing cavity, and two ends of each second transverse rib are respectively connected with the third longitudinal rib and the fourth longitudinal rib.

Based on the above embodiment, the first reinforcement member may improve the torsion resistance of the back plate in all directions, and the second reinforcement member may also improve the torsion resistance of the back plate in all directions, thereby improving the overall strength of the backrest member.

In some exemplary embodiments, the seat structure further comprises a third reinforcement and a fourth reinforcement, a portion of the third reinforcement is disposed on the seat element, another portion of the third reinforcement is disposed on the back rest element, a portion of the fourth reinforcement is disposed on the seat element, and another portion of the fourth reinforcement is disposed on the back rest element.

Based on the above embodiment, since the third reinforcement connects the seat unit and the backrest unit, and the fourth reinforcement connects the seat unit and the backrest unit, the provision of the third reinforcement and the fourth reinforcement can enhance the connection strength between the seat unit and the backrest unit, that is, the overall structural strength of the seat structure.

In some exemplary embodiments, the seat structure is concavely provided with a first long groove and a second long groove, the first long groove and the second long groove are arranged at intervals, one end of the first long groove is positioned at one end of the backrest far away from the seat, the other end of the first long groove is positioned at one end of the seat far away from the backrest, one end of the second long groove is positioned at one end of the backrest far away from the seat, and the other end of the second long groove is positioned at one end of the seat far away from the backrest; the third reinforcement comprises a plurality of third transverse ribs, the third transverse ribs are arranged at intervals along the longitudinal direction, each third transverse rib is arranged on the bottom wall of the first long groove, and two ends of each third transverse rib are respectively connected with two opposite side walls of the first long groove; the fourth reinforcement comprises a plurality of fourth transverse ribs, the fourth transverse ribs are respectively arranged at intervals, each fourth transverse rib is arranged on the bottom wall of the second long groove, and two ends of each fourth transverse rib are respectively connected with two opposite side walls of the second long groove.

Based on the above embodiment, the first bottom wall, the two side walls and the third transverse rib form a reinforcing structure, and the second bottom wall, the two side walls and the fourth transverse rib form another reinforcing structure, so that the overall strength of the seat structure can be improved.

In some exemplary embodiments, the third reinforcement further includes a plurality of fifth longitudinal ribs, the plurality of fifth longitudinal ribs are disposed on the bottom wall of the first elongated slot, one fifth longitudinal rib is disposed between any two adjacent third transverse ribs, and two ends of each fifth longitudinal rib are respectively connected to one third transverse rib; the fourth reinforcement further comprises a plurality of sixth longitudinal ribs, the plurality of sixth longitudinal ribs are arranged on the bottom wall of the second long groove, one sixth longitudinal rib is arranged between any two adjacent fourth transverse ribs, and two end parts of any one sixth longitudinal rib are respectively connected with one fourth transverse rib.

Based on the above embodiment, the fifth longitudinal rib may effectively improve the structural strength of the third reinforcing member, and the sixth longitudinal rib may effectively improve the structural strength of the fourth reinforcing member.

In some exemplary embodiments, the height of each of the third transverse ribs decreases gradually from both ends to the middle portion, the height of each of the fourth transverse ribs decreases gradually from both ends to the middle portion, the height of each of the fifth longitudinal ribs decreases gradually from both ends to the middle portion, and the height of each of the sixth longitudinal ribs decreases gradually from both ends to the middle portion.

Based on the above embodiment, the third transverse rib, the fourth transverse rib, the fifth longitudinal rib and the sixth longitudinal rib can reduce the material consumption, the cost and the weight on the basis of ensuring the connection strength.

In some exemplary embodiments, the first longitudinal rib and the fourth longitudinal rib are disposed apart from each other, the first longitudinal rib forming a portion of one of the sidewalls of the first elongated slot, the fourth longitudinal rib forming a portion of one of the sidewalls of the second elongated slot.

Based on the above embodiment, the third reinforcement member and the first reinforcement member share the first longitudinal rib, and the fourth reinforcement member and the second reinforcement member share the second longitudinal rib, so that the seat structure can be made more compact, and at the same time, the material use is reduced, the cost is reduced, and the weight is reduced.

In some exemplary embodiments, the back rest rear cover comprises: the plurality of fifth transverse ribs are arranged on the rear cover plate and are distributed at intervals along the length direction of the rear cover plate; a plurality of seventh longitudinal ribs, wherein the seventh longitudinal ribs are arranged on the rear cover plate, a seventh longitudinal rib is arranged between any two adjacent fifth transverse ribs, and two end parts of each seventh longitudinal rib are respectively connected with the middle part of one fifth transverse rib; the plurality of sixth transverse ribs are arranged on the rear cover plate and are distributed at intervals along the length direction of the rear cover plate; the plurality of eighth longitudinal ribs are arranged on the rear cover plate, one eighth longitudinal rib is arranged between any two adjacent sixth transverse ribs, and two end parts of each eighth longitudinal rib are respectively connected with the middle part of one sixth transverse rib.

Based on the above embodiment, by providing a plurality of fifth transverse ribs, a plurality of sixth longitudinal ribs, a plurality of sixth transverse ribs and a plurality of eighth longitudinal ribs, the structural strength of the back cover plate can be enhanced, and further the overall strength of the seat structure can be improved, and the impact resistance of the seat structure can be ensured.

In some exemplary embodiments, the aperture includes a first aperture adjacent to the first stiffener and a second aperture adjacent to the second stiffener; each of the five transverse ribs and each of the six longitudinal ribs are received in the first aperture, and each of the six transverse ribs and each of the seven longitudinal ribs are received in the second aperture.

Based on the embodiment, the overall thickness of the backrest and the backrest rear cover in the assembled state can be effectively reduced.

In some exemplary embodiments, the height of each of the fifth transverse ribs decreases gradually from the middle portion to the two ends, and the height of each of the sixth transverse ribs decreases gradually from the middle portion to the two ends.

Based on the above embodiment, on the basis that the fifth transverse rib is firmly connected with the sixth longitudinal rib and on the basis that the sixth transverse rib is firmly connected with the eighth longitudinal rib, the material use can be reduced, the cost can be reduced, and the weight of the seat structure can be reduced.

In some exemplary embodiments, each of the fifth transverse ribs has a thickness of 1mm to 1.5mm, a spacing between two adjacent fifth transverse ribs is 30mm to 40mm, each of the sixth transverse ribs has a thickness of 1mm to 1.5mm, and a spacing between two adjacent sixth transverse ribs is 30mm to 40mm.

Based on the above embodiment, the strength of the back cover is ensured to be enough, and the problem that the fifth transverse rib and the sixth transverse rib are reduced in appearance or strength due to shrinkage is avoided during molding.

In some exemplary embodiments, the ratio of the area of the aperture to the area of the back plate is 0.5-0.8, and the thickness of the back plate is 3-4 mm.

Based on the embodiment, the ratio of the area of the opening to the area of the backboard is 0.5-0.8, so that the weight of the seat structure can be effectively reduced, the safety seat is light, and meanwhile, the integral strength of the backboard and the seat structure is ensured by setting the wall thickness of the backboard within the range of 3-4 mm.

In some exemplary embodiments, the material of the backrest includes 70% by mass PA66 and 30% by mass ST801.

Based on the above embodiment, the material of the backrest is changed from 100% by mass of PA66 to 70% by mass of PA66 and 30% by mass of ST801, so that the overall strength of the backrest can be improved.

In a second aspect, embodiments of the present application provide a child safety seat comprising: a seat structure with a high strength back as in any of the above embodiments; and the seat unit is slidably arranged on the base to adjust the pitching angle of the seat structure.

Based on the above embodiments, since the child safety seat includes the seat structure, the child safety seat has the characteristics of lighter weight and higher strength.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a seat structure according to an embodiment of the present application;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

FIG. 3 is a schematic view of the structure of a back cover in one embodiment of the present application;

FIG. 4 is a schematic structural view of a safety seat in one embodiment of the present application;

fig. 5 is an enlarged schematic view at B in fig. 3.

Reference numerals illustrate: 100. a seat structure; 110. a backrest member; 111. a first reinforcement; 1111. a first longitudinal rib; 1112. a second longitudinal rib; 1113. a first transverse rib; 111a, a first cavity; 112. a second reinforcement; 1121. a third longitudinal rib; 1122. a fourth longitudinal rib; 1123. a second transverse rib; 112a, a second cavity; 113. a back plate; 113a, opening; 113b, a first hole; 113c, a second hole; 120. back the back cover; 121. a back cover plate; 122. a fifth transverse rib; 123. a seventh longitudinal rib; 124. a sixth transverse rib; 125. eighth longitudinal ribs; 130. a seating unit; 140. a third reinforcement; 141. a third transverse rib; 142. a fifth longitudinal rib; 150. a fourth reinforcement; 151. a fourth transverse rib; 152. a sixth longitudinal rib; 100a, a first elongated slot; 100b, a second elongated slot; 200. a safety seat; 210. and (5) a base.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

As shown in fig. 1 and 3, a first aspect of the present embodiment provides a seat structure 100 with a high strength backrest, the seat structure 100 including a seat 130, a backrest 110, and a backrest rear cover 120.

The seat unit 130 is used for bearing the weight of the child, and the seat unit 130 and the backrest 110 are generally integrally formed, thereby facilitating the production and improving the structural strength. The seat member 130 and the back member 110 are typically further provided with a foam layer covered with a fabric layer.

The backrest 110 includes a first reinforcing member 111, a second reinforcing member 112 and a back plate 113, wherein the first reinforcing member 111 and the second reinforcing member 112 are disposed on the back plate 113, and the first reinforcing member 111 and the second reinforcing member 112 are used for enhancing the strength of the back plate 113. The first reinforcing member 111 and the second reinforcing member 112 are disposed at intervals, and specifically, the first reinforcing member 111 and the second reinforcing member 112 may be disposed at two opposite edges of the back plate 113. The back plate 113 is provided with one or more openings 113a, and the overall weight of the seat structure 100 can be reduced by providing the openings 113 a. The back plate 113 is connected to the seat member 130, and illustratively, the back plate 113 is integrally provided with the seat member 130. The backrest 110 has an inner side surface and an outer side surface, the first reinforcement 111 and the second reinforcement 112 are provided on the inner side surface, and the opening 113a penetrates the inner side surface and the outer side surface.

The primary purpose of the safety seat 200 is to secure a child to the safety seat 200. As is well known, the safety seat 200 is mounted on the rear seat of a vehicle, the back rest 110 of the safety seat 200 is typically in abutment with the back rest of the vehicle seat, and the back rest of the safety seat 200 is typically not required to carry particularly high impact forces. The strength of the safety seat 200 can be ensured even if the opening 113a is provided in the back plate 113.

The back-rest rear cover 120 is provided to the back plate 113, and the back-rest rear cover 120 covers the opening. The back rear cover 120 and the back plate 113 are separately arranged, so that other components of the seat structure 100 can be conveniently assembled.

In summary, the seat structure 100 according to the embodiment of the present application can improve the strength of the back plate 113 by providing the first reinforcement 111 and the second reinforcement 112 on the back plate 113. In addition, the back plate 113 is provided with the opening 113a, so that the overall weight of the seat structure 100 can be reduced, and the seat structure 100 has high strength and can be kept light.

As shown in fig. 1, in some embodiments, the first stiffener 111 includes a first longitudinal rib 1111, a second longitudinal rib 1112, and a plurality of first transverse ribs 1113.

The first longitudinal rib 1111 and the second longitudinal rib 1112 are disposed on the inner side of the back plate 113, and in order to increase the coverage area of the first reinforcement 111 on the back plate 113, the first longitudinal rib 1111 and the second longitudinal rib 1112 may extend from the top end of the back plate 113 to the bottom end of the back plate 113. The lateral direction and the longitudinal direction in the present embodiment are the lateral direction, i.e., the left-right direction of the safety seat 200, and the longitudinal direction, i.e., the up-down direction of the safety seat 200, with respect to the safety seat 200 in the mounted state.

The second longitudinal rib 1112 is spaced apart from the first longitudinal rib 1111, and the first longitudinal rib 1111, the back plate 113 and the second longitudinal rib 1112 enclose a first cavity 111a.

The plurality of first transverse ribs 1113 are all arranged at intervals, and the plurality of first transverse ribs 1113 may be arranged at uniform intervals or non-uniform intervals, specifically may be arranged according to actual requirements, and is not limited herein. Each first transverse rib 1113 is disposed on the back plate 113 and located in the first cavity 111a, and two ends of each first transverse rib 1113 are respectively connected to the first longitudinal rib 1111 and the second longitudinal rib 1112. The first reinforcement 111 may enhance the torsion resistance of the back plate 113 in various directions.

The second stiffener 112 includes a third longitudinal rib 1121, a fourth longitudinal rib 1122, and a plurality of second transverse ribs 1123.

The third longitudinal rib 1121 and the fourth longitudinal rib 1122 are disposed on the back plate 113, and the third longitudinal rib 1121 and the fourth longitudinal rib 1122 may be disposed through the back plate 113 in the longitudinal direction of the back plate 113 in order to increase the coverage area of the second reinforcing member 112 on the back plate 113.

The third longitudinal rib 1121 is spaced from the fourth longitudinal rib 1122, and the third longitudinal rib 1121, the back plate 113 and the fourth longitudinal rib 1122 enclose a second cavity 112a.

The plurality of second transverse ribs 1123 are all arranged at intervals, and the plurality of second transverse ribs 1123 may be arranged at uniform intervals or non-uniform intervals, specifically may be arranged according to actual needs, and is not limited herein. Each second transverse rib 1123 is disposed on the back plate 113 and located in the second cavity 112a, and two ends of each second transverse rib 1123 are respectively connected to the third longitudinal rib 1121 and the fourth longitudinal rib 1122. The second reinforcement 112 may enhance the torsion resistance of the back plate 113 in various directions.

With continued reference to fig. 1, in some embodiments, the seat structure 100 further includes a third reinforcement 140 and a fourth reinforcement 150, the first reinforcement 111 and the second reinforcement 112 are located between the third reinforcement 140 and the fourth reinforcement 150, a portion of the third reinforcement 140 is disposed on the seat member 130, another portion of the third reinforcement 140 is disposed on the backrest 110, a portion of the fourth reinforcement 150 is disposed on the seat member 130, and another portion of the fourth reinforcement 150 is disposed on the backrest 110. Since the third reinforcement 140 connects the seat 130 and the backrest 110 and the fourth reinforcement 150 connects the seat 130 and the backrest 110, the provision of the third reinforcement 140 and the fourth reinforcement 150 can improve the connection strength between the seat 130 and the backrest 110, i.e. the overall structural strength of the seat structure 100.

With continued reference to fig. 1, in some embodiments, the seat structure 100 is concavely provided with a first elongated slot 100a and a second elongated slot 100b, where the first elongated slot 100a and the second elongated slot 100b are disposed at a lateral interval, one end of the first elongated slot 100a is located at an end of the backrest member 110 away from the seat member 130, and the other end of the first elongated slot 100a is located at an end of the seat member 130 away from the backrest member 110, so that the first elongated slot 100a covers the backrest member 110 and the seat member 130 as much as possible. One end of the second elongated slot 100b is located at an end of the back support 110 remote from the seat member 130, and the other end of the second elongated slot 100b is located at an end of the seat member 130 remote from the back support 110, so that the second elongated slot covers the back support 110 and the seat member 130 as much as possible.

The third reinforcement member 140 includes a plurality of third transverse ribs 141, each third transverse rib 141 is disposed at intervals along the longitudinal direction, each third transverse rib 141 is disposed at the bottom wall of the first elongated slot 100a, and two ends of each third transverse rib 141 are respectively connected to two opposite sidewalls of the first elongated slot 100 a. Namely, the bottom wall, the two side walls and the third transverse rib 141 of the first elongated slot 100a form a reinforcing structure.

The fourth reinforcement member 150 includes a plurality of fourth transverse ribs 151, each fourth transverse rib 151 is disposed at intervals, each fourth transverse rib 151 is disposed at a bottom wall of the second elongated slot 100b, and two ends of each fourth transverse rib 151 are respectively connected to two opposite sidewalls of the second elongated slot 100 b. Namely, the bottom wall, both side walls and the fourth transverse rib 151 of the second elongated slot 100b form another reinforcing structure.

With continued reference to fig. 1, in some embodiments, the third reinforcing member 140 further includes a plurality of fifth longitudinal ribs 142, each fifth longitudinal rib 142 is disposed on the bottom wall of the first elongated slot 100a, and a fifth longitudinal rib 142 is disposed between any two adjacent third transverse ribs 141, and two ends of any fifth longitudinal rib 142 are respectively connected to a third transverse rib 141. When the width of the first elongated groove 100a is wider, the fifth longitudinal ribs 142 may effectively improve the structural strength of the third reinforcing member 140.

The fourth reinforcement member 150 further includes a plurality of sixth longitudinal ribs 152, wherein the plurality of sixth longitudinal ribs 152 are disposed on the bottom wall of the second elongated slot 100b, and a sixth longitudinal rib 152 is disposed between any two adjacent fourth transverse ribs 151, and two ends of any sixth longitudinal rib 152 are respectively connected to a fourth transverse rib 151. When the width of the second elongated groove 100b is wider, the sixth longitudinal rib 152 may effectively enhance the structural strength of the fourth reinforcement member 150.

As shown in fig. 2, in some embodiments, the height of each third transverse rib 141 is gradually reduced from two end portions to a middle portion, two end portions of each third transverse rib 141 are respectively connected to two opposite side walls of the first long groove 100a, and a higher end portion of each third transverse rib 141 can ensure that the third transverse rib 141 is firmly connected to two opposite side walls of the first long groove 100a, and a lower middle portion of each third transverse rib 141 can reduce material consumption, cost and weight.

The height of each fourth transverse rib 151 is gradually reduced from two end portions to the middle portion, two ends of each fourth transverse rib 151 are respectively connected with two opposite side walls of the second long groove 100b, the height of the end portion of each fourth transverse rib 151 is higher, firm connection between the fourth transverse rib 151 and two opposite side walls of the second long groove 100b can be ensured, the height of the middle portion of each fourth transverse rib 151 is lower, material use can be reduced, cost is reduced, and weight is reduced.

The height of each fifth longitudinal rib 142 gradually decreases from two ends to a middle part, two ends of each fifth longitudinal rib 142 are respectively connected with a third transverse rib 141, the higher heights of the two ends of each fifth longitudinal rib 142 can ensure that the fifth longitudinal rib 142 is firmly connected with the two third transverse ribs 141, and the middle part of each fifth longitudinal rib 142 has lower height, so that the material use, the cost and the weight can be reduced.

The height of each sixth longitudinal rib 152 gradually decreases from two end portions to a middle portion, two end portions of each sixth longitudinal rib 152 are respectively connected with a fourth transverse rib 151, the height of two end portions of each sixth longitudinal rib 152 is higher, the connection between the sixth longitudinal rib 152 and the two fourth transverse ribs 151 can be ensured to be firmer, the height of the middle portion of each sixth longitudinal rib 152 is lower, the material use can be reduced, the cost can be reduced, and the weight can be reduced.

As shown in fig. 1, in some embodiments, the first longitudinal rib 1111 and the fourth longitudinal rib 1122 are disposed away from each other, the first longitudinal rib 1111 forms a part of one side wall of the first elongated slot 100a, that is, the third reinforcement 140 is disposed closely to the first reinforcement 111, and the first longitudinal rib 1111 is shared by the first and second reinforcement members, so that the seat structure 100 can be more compact, and at the same time, the material usage, the cost and the weight can be reduced.

The fourth longitudinal rib 1122 forms a part of one of the side walls of the second elongated slot 100b, that is, the fourth reinforcement member 150 is disposed in close proximity to the second reinforcement member 112, and the fourth reinforcement member 150 and the second reinforcement member 112 share the second longitudinal rib 1112, so that the seat structure 100 can be made more compact, and at the same time, the material consumption, the cost and the weight can be reduced.

As shown in fig. 3, in some embodiments, the back-to-back rear cover 120 includes a rear cover plate 121, a plurality of fifth transverse ribs 122, a plurality of seventh longitudinal ribs 123, a plurality of sixth transverse ribs 124, and a plurality of eighth longitudinal ribs 125.

The fifth transverse ribs 122 are disposed on the back cover 121 and are spaced apart along the length of the back cover 121. The seventh longitudinal ribs 123 are disposed on the back cover 121, and a seventh longitudinal rib 123 is disposed between any two adjacent fifth transverse ribs 122, and two ends of each seventh longitudinal rib 123 are respectively connected to a middle portion of the fifth transverse rib 122. Preferably, the fifth transverse rib 122 is disposed perpendicular to the seventh longitudinal rib 123. 122 extend along the length direction, and both sides thereof are provided with transverse ribs

The sixth transverse ribs 124 are disposed on the back cover 121 and are arranged at intervals along the length direction of the back cover 121. The eighth longitudinal ribs 125 are disposed on the back cover 121, and an eighth longitudinal rib 125 is disposed between any two adjacent sixth transverse ribs 124, and two ends of each eighth longitudinal rib 125 are respectively connected to a middle portion of the sixth transverse rib 124. Preferably, the sixth transverse rib 124 is disposed perpendicular to the eighth longitudinal rib 125.

By providing the fifth transverse ribs 122, the seventh longitudinal ribs 123, the sixth transverse ribs 124 and the eighth longitudinal ribs 125, the structural strength of the back cover 121 can be enhanced, so that the overall strength of the seat structure 100 can be improved, and the impact resistance of the seat structure 100 can be ensured.

As shown in fig. 1 and 4, in some embodiments, the opening 113a includes a first hole 113b and a second hole 113c, the first hole 113b is adjacent to the first reinforcing member 111, and the second hole 113c is adjacent to the second reinforcing member 112. The fifth transverse ribs 122 and the seventh longitudinal ribs 123 are received in the first holes 113b, and the sixth transverse ribs 124 (not shown) and the eighth longitudinal ribs 125 (not shown) are received in the second holes 113c. So that the overall thickness of the assembled state of the back rest 110 and the back rest rear cover 120 can be reduced.

As shown in fig. 5, in some embodiments, the height of each fifth transverse rib 122 is gradually reduced from the middle portion to the two end portions, the middle portion of each fifth transverse rib 122 is connected with the seventh longitudinal rib 123, the middle portion of each fifth transverse rib 122 is higher, so that the connection between the fifth transverse rib 122 and the seventh longitudinal rib 123 is ensured to be stronger, the height of the two end portions of each fifth transverse rib 122 is lower, the material usage is reduced, the cost is reduced, and the weight is reduced.

The height of each sixth transverse rib 124 gradually decreases from the middle portion to the two end portions, the middle portion of each sixth transverse rib 124 is connected with the eighth longitudinal rib 125, the middle portion of each sixth transverse rib 124 has higher height, the connection between the sixth transverse rib 124 and the eighth longitudinal rib 125 can be ensured to be firmer, the two end portions of each sixth transverse rib 124 have lower height, the material use can be reduced, the cost can be reduced, and the weight can be reduced.

In some embodiments, the material of the back rest 110 includes 70% by mass PA66 (polyamide 66, nylon 66) and 30% by mass ST801 (Du Bangni dragon ST 801). In the related art, the material of the backrest 110 may be 100% by mass of PA66. The inventors found that changing the material of the back support 110 from 100% by mass of PA66 to 70% by mass of PA66 and 30% by mass of ST801 can improve the overall strength of the back support 110. Of course, the material of the seat unit 130 also includes 70% by mass of PA66 and 30% by mass of ST801, thereby improving the strength of the entire seat structure 100.

In some embodiments, the area ratio of the aperture 113a to the area of the backplate 113 is 0.5-0.8, and the thickness of the backplate 113 is 3-4 mm. The ratio of the area of the opening 113a to the area of the back plate 113 is 0.5-0.8, which can effectively reduce the weight of the seat structure 100, so that the safety seat 200 is light, and meanwhile, the integral strength of the back plate 113 and the seat structure 100 is ensured by setting the wall thickness of the back plate 113 within the range of 3mm-4mm. Preferably, the wall thickness of the back plate 113 is 3.5mm.

In some embodiments, each fifth transverse rib 122 has a thickness of 1mm to 1.5mm, the spacing between adjacent fifth transverse ribs 122 is 30mm to 40mm, each sixth transverse rib 124 has a thickness of 1mm to 1.5mm, and the spacing between adjacent sixth transverse ribs 124 is 30mm to 40mm. In this way, the strength of the back cover is ensured to be sufficient, and the problem of appearance problem or strength reduction caused by shrinkage of the fifth transverse rib 122 and the sixth transverse rib 124 is not caused at the time of molding.

Preferably, each fifth transverse rib 122 has a thickness of 1.2mm, the spacing between two adjacent fifth transverse ribs 122 is 35mm, each sixth transverse rib 124 has a thickness of 1.2mm, and the spacing between two adjacent sixth transverse ribs 124 is 35mm.

As shown in fig. 4, a second aspect of the embodiments of the present application provides a safety seat 200, including the seat structure 100 with a high-strength backrest and a base 210 according to any of the embodiments described above. The seating unit 130 is slidably disposed at the base 210 so that the pitch angle of the seating structure 100 can be adjusted.

Since the safety seat 200 includes the seat structure 100, the safety seat 200 has the characteristics of light weight and high strength.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, this is for convenience of description and simplification of the description, but does not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely used for illustration and are not to be construed as limitations of the present patent, and that the specific meaning of the terms described above may be understood by those of ordinary skill in the art according to the specific circumstances.

The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.

Claims

1. A seating structure having a high strength back, comprising:

a seating unit;

the backrest comprises a first reinforcing piece, a second reinforcing piece and a back plate, wherein the first reinforcing piece and the second reinforcing piece are arranged on the back plate at intervals, an opening is formed in the back plate and is positioned between the first reinforcing piece and the second reinforcing piece, and the back plate is connected with the seat unit; the backrest member is provided with an inner side surface and an outer side surface, the first reinforcing member and the second reinforcing member are arranged on the inner side surface, and the opening penetrates through the inner side surface and the outer side surface;

and the back rest rear cover piece is fixed on the outer side surface of the backboard, and covers the opening.

2. The seating structure with high strength back of claim 1 wherein said first reinforcement comprises:

a first longitudinal rib disposed on the back plate;

the second longitudinal ribs are arranged on the back plate and are arranged at intervals with the first longitudinal ribs, and the first longitudinal ribs, the back plate and the second longitudinal ribs enclose to form a first containing cavity;

the first transverse ribs are arranged at intervals, each first transverse rib is arranged on the back plate and located in the first containing cavity, and two ends of each first transverse rib are respectively connected with the first longitudinal rib and the second longitudinal rib;

the second reinforcement includes:

a third longitudinal rib disposed on the back plate;

the fourth longitudinal rib is arranged on the back plate, the fourth longitudinal rib and the third longitudinal rib are arranged at intervals, and the third longitudinal rib, the back plate and the fourth longitudinal rib are enclosed to form a second containing cavity;

the second transverse ribs are respectively arranged at intervals, each second transverse rib is arranged on the back plate and located in the second containing cavity, and two ends of each second transverse rib are respectively connected with the third longitudinal rib and the fourth longitudinal rib.

3. The seating structure of claim 2 further comprising a third reinforcement and a fourth reinforcement, wherein a portion of the third reinforcement is disposed in the seating element, another portion of the third reinforcement is disposed in the back element, a portion of the fourth reinforcement is disposed in the seating element, and another portion of the fourth reinforcement is disposed in the back element.

4. A seat structure with a high strength backrest according to claim 3, wherein the seat structure is provided with a first elongated slot and a second elongated slot, the first elongated slot being spaced from the second elongated slot, one end of the first elongated slot being located at an end of the backrest remote from the seat, the other end of the first elongated slot being located at an end of the seat remote from the backrest, one end of the second elongated slot being located at an end of the backrest remote from the seat, the other end of the second elongated slot being located at an end of the seat remote from the backrest;

the third reinforcement comprises a plurality of third transverse ribs, the third transverse ribs are arranged at intervals along the longitudinal direction, the third transverse ribs are arranged on the bottom wall of the first long groove, and two ends of each third transverse rib are respectively connected with two opposite side walls of the first long groove;

the fourth reinforcement comprises a plurality of fourth transverse ribs, the fourth transverse ribs are respectively arranged at intervals, each fourth transverse rib is arranged on the bottom wall of the second long groove, and two ends of each fourth transverse rib are respectively connected with two opposite side walls of the second long groove.

5. The high-strength seatback seat structure of claim 4, wherein said third reinforcement further includes a plurality of fifth longitudinal ribs disposed on a bottom wall of said first elongated slot, and wherein one of said fifth longitudinal ribs is disposed between any two adjacent third transverse ribs, and wherein two ends of any one of said fifth longitudinal ribs are each connected to one of said third transverse ribs;

the fourth reinforcement further comprises a plurality of sixth longitudinal ribs, the plurality of sixth longitudinal ribs are arranged on the bottom wall of the second long groove, one sixth longitudinal rib is arranged between any two adjacent fourth transverse ribs, and two end parts of any one sixth longitudinal rib are respectively connected with one fourth transverse rib.

6. The seating structure with high-strength backrest of claim 4, wherein each of said third transverse ribs is stepped down in height from both ends to a middle portion, each of said fourth transverse ribs is stepped down in height from both ends to a middle portion, each of said fifth longitudinal ribs is stepped down in height from both ends to a middle portion, and each of said sixth longitudinal ribs is stepped down in height from both ends to a middle portion.

7. The seating structure with high strength back of claim 4, wherein the first longitudinal rib and the fourth longitudinal rib are disposed away from each other, the first longitudinal rib forming a portion of one of the side walls of the first slot and the fourth longitudinal rib forming a portion of one of the side walls of the second slot.

8. The seating structure with high strength back of claim 1 wherein said back-to-back cover comprises:

a back cover plate;

the plurality of fifth transverse ribs are arranged on the rear cover plate and are distributed at intervals along the length direction of the rear cover plate;

a plurality of seventh longitudinal ribs, wherein the seventh longitudinal ribs are arranged on the rear cover plate, a seventh longitudinal rib is arranged between any two adjacent fifth transverse ribs, and two end parts of each seventh longitudinal rib are respectively connected with the middle part of one fifth transverse rib;

the plurality of sixth transverse ribs are arranged on the rear cover plate and are distributed at intervals along the length direction of the rear cover plate;

the plurality of eighth longitudinal ribs are arranged on the rear cover plate, one eighth longitudinal rib is arranged between any two adjacent sixth transverse ribs, and two end parts of each eighth longitudinal rib are respectively connected with the middle part of one sixth transverse rib.

9. The seating structure with high strength back of claim 8, wherein the aperture comprises a first aperture adjacent the first reinforcement and a second aperture adjacent the second reinforcement;

each of the five transverse ribs and each of the six longitudinal ribs are received in the first aperture, and each of the six transverse ribs and each of the seven longitudinal ribs are received in the second aperture.

10. The seating structure with high-strength backrest of claim 8, wherein each of said fifth transverse ribs is stepped down in height from a middle portion to both ends and each of said sixth transverse ribs is stepped down in height from a middle portion to both ends.

11. The seating structure with high-strength backrest of claim 8, wherein each of said fifth transverse ribs has a thickness of 1mm to 1.5mm, a spacing between adjacent ones of said fifth transverse ribs is 30mm to 40mm, a thickness of each of said sixth transverse ribs is 1mm to 1.5mm, and a spacing between adjacent ones of said sixth transverse ribs is 30mm to 40mm.

12. The seating structure with high strength back of claim 9 wherein the ratio of the area of the aperture to the area of the back plate is 0.5-0.8 and the thickness of the back plate is 3mm-4mm.

13. The seat structure with high-strength backrest according to claim 1, wherein the material of the backrest member includes 70% by mass of PA66 and 30% by mass of ST801.

14. A child safety seat, comprising:

a seating structure with a high strength backrest as claimed in any one of claims 1 to 13; and

The seat unit is slidably arranged on the base to adjust the pitching angle of the seat structure.