NL2013622C2

NL2013622C2 - Child safety seat with buffer function.

Info

Publication number: NL2013622C2
Application number: NL2013622A
Authority: NL
Inventors: Zheng-Wen Guo
Original assignee: Wonderland Nursery Goods
Priority date: 2013-10-14
Filing date: 2014-10-13
Publication date: 2015-04-16
Also published as: GB202005415D0; DE102014220658A1; DE102014220658B4; FR3011782A1; GB2520616B; GB201417725D0; FR3011782B1; DE202014011421U1; GB2581286B; GB2581286A; GB2520616A; DE102014020002B4; CN104553901A

Abstract

A child safety seat comprising an inner wall 100F, and an inner space 100S is enclosed by the inner wall where the seat further includes a buffer plate 500 layer and a first foam cushion 600 disposed in the inner space, and the first foam cushion is disposed between the buffer plate and the inner wall. The buffer plate may be more rigid than the first foam cushion. The buffer plate or first foam cushion or both may extend around a lateral or side or head or back rest portion of the child seat. A second foam cushion (700, Fig.6) may extend in front of the buffer plate. A first cover 800 may extend over the buffer plate (Fig.12). A second cover may extend over the first foam cushion. Upon collision, a child bumps into the buffer plate and the buffer plate is forced towards the first foam cushion so that a thrust surface area of the first foam cushion gets larger, leading to decreased pressure upon the first foam cushion.

Description

CHILD SAFETY SEAT WITH BUFFER FUNCTION

Background of the Invention 1. Field of the Invention

The present invention relates to a child safety seat, and more particularly to a child safety seat with an enhanced buffer effect. 2. Description of the Prior Art A child safety seat is usually installed on a car seat for a child so as to ensure the child's safety. The child safety seat is connected to the car seat, and the child is secured on the child safety seat by fastening a seat belt. A cushion filled with foam is disposed between the child safety seat and the child to provide a buffer function for the child. When an emergency brake occurs or a driving direction is changing, the child bumps into the child safety seat and presses the cushion by inertial effect. The foam is deformed by absorbing a hitting force to preventing the child from harm.

However, when a larger hitting force is applied on the cushion, i.e., when each unit area of the cushion gets a larger hitting pressure accordingly, a thrust surface area of the foam is deformed extremely so that the cushion is not capable of providing enough buffer effect. Therefore, it is not able to ensure the child's safety effectively.

Summary of the Invention

The present invention is to provide a child safety seat with enhanced buffer effect, so as to absorb a hitting force applied on a child and to improve safety of the child safety seat, to solve the problems mentioned above.

According to the claimed invention, a child safety seat includes an inner wall, and an inner space is enclosed by the inner wall. The child safety seat further includes a buffer plate and a first foam cushion. The buffer plate and the first foam cushion are disposed in the inner space. The first foam cushion is disposed between the buffer plate and the inner wall.

According to a preferred embodiment of the present invention, the buffer plate is disposed in at least one of a middle portion and a lateral side portion of the child safety seat.

According to a preferred embodiment of the present invention, a cross section of the buffer plate is formed in a U shape.

According to a preferred embodiment of the present invention, the first foam cushion is disposed in at least one of a middle portion and a lateral side portion of the child safety seat.

According to a preferred embodiment of the present invention, a cross section of the first foam cushion is formed in a U shape.

According to a preferred embodiment of the present invention, rigidity of the buffer plate is greater than rigidity of the first foam cushion. Thus, an increased thrust surface area of thrust surface of the first foam cushion is achieved.

According to a preferred embodiment of the present invention, the buffer plate is made of PE, PP, EPS, EPP, or EPO; the buffer plate has a certain degree of flexibility to prevent the child from harm.

According to a preferred embodiment of the present invention, the first foam cushion is made of foam, and the foam make the first foam cushion have an enhanced buffer effect.

According to a preferred embodiment of the present invention, the child safety seat further includes an outer cover for covering the buffer plate and the first foam cushion, the outer cover positions the buffer plate and the first foam cushion so that relative positions of the buffer plate and the first foam cushion are fixed, and the buffer plate and the first foam cushion cooperate with each other to enhance the impact resistance of the child safety seat.

According to a preferred embodiment of the present invention, the child safety seat further includes a first outer cover for covering the buffer plate and a second outer cover for covering the first foam cushion.

According to a preferred embodiment of the present invention, the child safety seat further includes a backrest and a headrest disposed on an upper portion of the backrest, and the buffer plate and the first foam cushion are installed inside the headrest.

According to a preferred embodiment of the present invention, the child safety seat further includes a backrest, a headrest disposed on an upper portion of the backrest, and a head cushion connected to the headrest. The first foam cushion is installed inside the headrest, and the buffer plate is installed inside the head cushion.

According to a preferred embodiment of the present invention, the child safety seat further includes a backrest and a body cushion disposed on a lower portion of the backrest. The buffer plate and the first foam cushion are installed inside the body cushion.

According to a preferred embodiment of the present invention, the child safety seat further includes a second foam cushion, and the buffer plate is disposed between the first foam cushion and the second foam cushion.

According to a specific embodiment of the present invention, the second foam cushion is disposed in at least one of a middle portion and a lateral side portion of the child safety seat.

According to a specific embodiment of the present invention, a cross section of the second foam cushion is formed in a U shape.

According to a specific embodiment of the present invention, the second foam cushion is made of foam.

According to a specific embodiment of the present invention, the child safety seat includes an outer cover for covering the buffer plate, the first foam cushion, and the second foam cushion. The outer cover positions the buffer plate, the first foam cushion, and the second foam cushion, so that the relative positions of the buffer plate, the first foam cushion, and the second foam cushion are fixed, and the buffer plate, the first foam cushion and the second foam cushion cooperate with one another to enhance the impact resistance e of the child safety seat.

According to a specific embodiment of the present invention, the child safety seat further includes a first outer cover for covering the buffer plate and the second foam cushion, and a second outer cover for covering the first foam cushion.

According to a specific embodiment of the present invention, the child safety seat further includes a backrest and a headrest disposed on an upper portion of the backrest. The buffer plate, the first foam cushion and the second foam cushion are installed inside the headrest.

According to a specific embodiment of the present invention, the child safety seat further includes a backrest, a headrest disposed on an upper portion of the backrest, and a head cushion connected to the headrest. The first foam cushion is installed inside the headrest, and the buffer plate and the second foam cushion are installed inside the head cushion.

According to a specific embodiment of the present invention, the child safety seat further includes a backrest and a body cushion disposed on a lower portion of the backrest. The buffer plate, the first foam cushion and the second foam cushion are installed inside the body cushion.

The first foam cushion, the buffer plate, and the second foam cushion are orderly disposed on the inner wall of the child safety seat. The buffer plate is located on a side close to a child. When an emergency brake occurs or a* driving direction is changing, the child bumps into the second foam cushion by the inertial effect and the second foam cushion can provide a buffer effect to the child. Then, the buffer plate is forced to hit the first foam cushion and can increase the a thrust surface area of the first foam cushion so as to reduce a hitting pressure on each unit area of the first foam cushion. Thus the first foam cushion is not extremely deformed, the impact resistance of the child safety seat is enhanced, and the safety of the child safety seat can be improved greatly.

These and other objectives of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings .

Brief Description of the Drawings FIG. lisa structural schematic diagram of a child safety seat of the present invention. FIG. 2 is a sectional diagram of a headrest of the child safety seat according to a first embodiment of the present invention. FIG. 3 is a sectional diagram of the headrest of the child safety seat according to a second embodiment of the present invention . FIG. 4 is a sectional diagram of the headrest of the child safety seat according to a third embodiment of the present invention. FIG. 5 is a sectional diagram of the headrest of the child safety seat according to a fourth embodiment of the present invention. FIG. 6 is a sectional diagram of the headrest of the child safety seat according to a fifth embodiment of the present invention. FIG. 7 is a sectional diagram of the headrest of the child safety seat according to a sixth embodiment of the present invention. FIG. 8 is a sectional diagram of the headrest of the child safety seat according to a seventh embodiment of the present invention. FIG. 9 is a sectional diagram of the headrest of the child safety seat according to an eighth embodiment of the present invention. FIG. 10 is a sectional diagram of the headrest of the child safety seat according to a ninth embodiment of the present invention. FIG. 11 is a sectional diagram of the headrest of the child safety seat according to a tenth embodiment of the present invention. FIG. 12 is a sectional diagram of the headrest of the child safety seat according to an eleventh embodiment of the present invention. FIG. 13 is a sectional diagram of the headrest of the child safety seat according to a twelfth embodiment of the present invention. FIG. 14 is a sectional diagram of the headrest of the child safety seat according to a thirteenth embodiment of the present invention. FIG. 15 is a sectional diagram of the headrest of the child safety seat according to a fourteenth embodiment of the present invention. FIG. 16 is a sectional diagram of the headrest of the child safety seat according to a fifteenth embodiment of the present invention. FIG. 17 is a sectional diagram of the headrest of the child safety seat according to a sixteenth embodiment of the present invention. FIG. 18 is a sectional diagram of a backrest of the child safety seat according to the present invention.

Detailed Description

In order to illustrate technical specifications and structural features as well as achieved purposes and effects of the present invention, relevant embodiments and figures are described as follows .

Please refer to FIG. 1» FIG. 1 is a structural schematic diagram of a child safety seat of the present invention. The child safety seat includes a headrest 100, a backrest 200, a head cushion 300, and a body cushion 400. The headrest 100 is movably connected to an upper portion of the backrest 200. The head cushion 300 is connected to the headrest 100 and driven by the headrest 100. The body cushion 400 is disposed on a lower portion of the backrest 200. The head cushion 300 and the body cushion 400 are separated from each other. In another embodiment, the headrest 100 and the backrest 200 can be designed to be incapable of sliding relatively. For example, the head cushion 300 and the body cushion 400 can be fixedly connected to each other. Please refer to FIG. 1 to FIG. 18, and detailed description is introduced as follows.

The child safety seat includes an inner wall F, and an inner space S is enclosed by the inner wall F. A buffer plate 500 and a first foam cushion 600 are disposed in the inner space S of the child safety seat. The first foam cushion 600 is disposed between the buffer plate 500 and the inner wall F of the child safety seat. The buffer plate 500 can be made of PE, PP, EPS, EPP, EPO, or in a combination thereof so as to have enough rigidity as well as flexibility. The first foam cushion 600 is made of foam. Therefore, rigidity of the buffer plate 500 is greater than rigidity of the first foam cushion 600. In another preferred embodiment, a second foam cushion 700 is disposed in the inner space S, and the buffer plate 500 is disposed between the first foam cushion 600 and the second foam cushion 700. The second foam cushion 700 is made of foam.

The inner wall F of child safety seat is composed of a first supporting wall 100F of the headrest 100 and a second supporting wall 200F of the backrest 200. The inner space S of the child safety seat is composed of a first supporting space 100S of the headrest 100 and a second supporting space 200S of the backrest 200. The head cushion 300 is disposed in the first supporting space 100S. The body cushion 400 is disposed in the second supporting space 200 and connected to the second supporting wall 200F.

Please refer to FIG. 2. FIG. 2 is a sectional diagram of the headrest 100 of the child safety seat according to a first embodiment of the present invention. A cross section of the first supporting wall 100F of the headrest 100 is formed in a U shape. One buffer plate 500 and one first foam cushion 600 are disposed in both two lateral side portions of the headrest 100 respectively, and adjacent to the first supporting space 100S. The first foam cushion 600 is disposed between the buffer plate 500 and the first supporting wall 100F. An outer cover 800 covers the first foam cushions 600 and the buffer plates 500 and positions the first foam cushions 600 and the buffer plates 500 on the headrest 100. The head cushion 300 is located at an outer side of the outer cover 800.

The disposition of the buffer plates 500 and the first cushions 600 is not limited to the two lateral side portions of the headrest 100 as mentioned above but the buffer plates 500 and the first cushions 600 also can be disposed in a middle portion of the headrest 100. For example, please refer to FIG. 3 to FIG. 5. FIG. 3 to FIG. 5 are sectional diagrams of the headrest 100 of the child safety seat according to a second embodiment to a fourth embodiment of the present invention. In the second embodiment as shown in FIG. 3, the buffer plate 500 including lateral parts located in the two lateral side portions of the headrest 100 and extended to connect with a central part thereof in the middle portion of the headrest 100 is jointly formed in a Ü shape corresponding to the first supporting wall 100F. In the third embodiment as shown in FIG. 4, the first foam cushion 600 including lateral parts located in the two lateral side portions of the headrest 100 and extended to connect with a central part thereof in the middle portion of the headrest 100 is jointly formed in a U shape corresponding to the first supporting wall 100F. In the fourth embodiment as shown in FIG. 5, the buffer plate 500 including lateral parts located in the two lateral side portions of the headrest 100 and extended to connect with a central part thereof in the middle portion of the headrest 100 is jointly formed in a Ü shape corresponding to the first supporting wall 100F, and meanwhile, the first foam cushion 600 including lateral parts located in the two lateral side portions of the headrest 100 and extended to connect with a central part thereof in the middle portion of the headrest 100 is jointly formed in a U shape corresponding to the first supporting wall 100F, similarly. A child's head abuts against the headrest 300 when the child is sitting on the child safety seat. When a driving direction is changing or a car gets hit, the child's head bumps into the headrest 300 so as to apply the hitting force to the buffer plate 500 and the first foam cushion 600. As the child's head is small, a thrust surface area of the buffer plate 500 is small accordingly. The buffer plate 500 can increase the thrust surface area of the first foam cushion 600 so as to reduce a hitting pressure on each unit area of the first foam cushion 600, so that the first foam cushion 600 is capable of providing an enhanced buffer effect and cannot be extremely deformed. Hence, it can enhance safety of the child safety seat. It should be noted that the buffer plate 500 can have a certain degree of flexibility for preventing the child from harm.

Please refer to FIG. 6 to FIG. 9. FIG. 6 to FIG. 9 are sectional diagrams of the headrest 100 of the child safety seat according to a fifth embodiment to an eighth embodiment of the present invention. As shown in FIG. 6 to FIG. 9, the second foam cushion 7 00 is further added in the child safety seat of the present invention as shown in FIG. 2 to FIG. 5 respectively. The second foam cushion 700 is disposed in the first supporting space 100S, and the buffer plate 500 is disposed between the first foam cushion 600 and the second foam cushion 7 00. Meanwhile, the outer cover 800 covers the buffer plate 500, the first foam cushion 600 and the second foam cushion 700, and the outer cover 800 positions the buffer plate 500, the first foam cushion 600 and the second foam cushion 700 on the headrest 100.

Please refer to FIG. 10. FIG. 10 is a sectional diagram of the headrest 100 of the child safety seat according to a ninth embodiment of the present invention. Similar to the first embodiments described above, a cross section of the first supporting wall 100F of the headrest 100 is formed in a Ü shape. One buffer plate 500 and one first foam cushion 600 are disposed in both two lateral side portions of the headrest 100 respectively. The buffer plates 500 and the first foam cushions 600 are disposed in the first supporting space 100S. The first foam cushion 600 is disposed between the buffer plate 500 and the first supporting wall 100F. The difference between the second embodiment and the first embodiment is that a first outer cover 810 covers the first foam cushion 600 and positions the first foam cushion 600 on the headrest 100, the head cushion 300 directly covers the buffer plate 500, and the head cushion 300 is located at an outer side of the first outer cover 810. Furthermore, the buffer plate 500 also can be covered by a second outer cover.

The disposition of the buffer plates 500 and the first foam cushions 600 is not limited to the lateral side portion of the headrest 100 as mentioned above, and the buffer plates 500 and the first foam cushions 600 also can be disposed in the middle portion of the headrest 100. For example, please refer to FIG. 11 to FIG. 13. FIG. 11 to FIG. 13 are sectional diagrams of the headrest 100 of the child safety seat according to a tenth embodiment to a twelfth embodiment of the present invention. According to the tenth embodiment as shown in FIG. 11, the buffer plate 500 including lateral parts located in the two lateral side portions of the headrest 100 and extended to connect with a central part thereof in the middle portion of the headrest 100 is jointly formed in a U shape corresponding to the first supporting wall 100F. According to the eleventh embodiment as shown in FIG. 12, the first foam cushion 600 including lateral parts located in the two lateral side portions of the headrest 100 and extended to connect with a central part thereof in the middle portion of the headrest 100 is jointly formed in a Ü shape corresponding to the first supporting wall 100F. According to the twelfth embodiment as shown in FIG. 13, the buffer plate 500 including lateral parts located in the two lateral side portions of the headrest 100 and extended to connect with a central part thereof in the middle portion of the headrest 100 is jointly formed in a U shape corresponding to the first supporting wall 100F, and meanwhile, the first foam cushion 600 including lateral parts located in the two lateral side portions and extended to connect with a central part thereof in the middle portion of the headrest 100 is j ointly formed in a U shape corresponding to the first supporting wall 100F, similarly.

Please refer to FIG. 14 to FIG. 17. FIG. 14 to FIG. 17 are sectional diagrams of the headrest 100 of the child safety seat according to a thirteenth embodiment to a sixteenth embodiment of the present invention. As shown in FIG. 14 to FIG. 17, the second foam cushion 700 is added to the child safety seat of the present invention as shown in FIG. 10 to FIG. 13 respectively. The second foam cushion 700 is disposed in the first supporting space 1003, and the buffer plate 500 is disposed between the first foam cushion 600 and the second foam cushion 700. Meanwhile, the head cushion 300 covers the buffer plate 500 and the second foam cushion 700.

Please refer to FIG. 18. FIG. 18 is a sectional diagram of the backrest 200 of the child safety seat according to the present invention. A cross section of the body cushion 400 is formed in a U shape corresponding to the second supporting wall 200F of the backrest 200. An exterior surface 410 of the body cushion 400 abuts against the second supporting wall 200F, and an interior surface 420 of the body cushion 400 supports the child's body. One buffer plate 500, one first foam cushion 600, and one second foam cushion 7 00 are disposed in both two lateral side portions of the body cushion 400 respectively. The first foam cushion 600 is close to the exterior surface 410 of the body cushion 400. The second foam cushion 700 is close to the interior surface 420 of the body cushion 400. The buffer plate 500 is disposed between the first foam cushion 600 and the second foam cushion 700. The body cushion 400 covers the buffer plate 500, the first foam cushion 600, and the second foam cushion 700. Furthermore, the buffer plate 500 including lateral parts located in the two lateral side portions of the body cushion 400 and extended to connect with a central part thereof in the middle portion of the body cushion 400 is jointly formed in a Ü shape corresponding to the second supporting wall 200F, and the second foam cushion 700 including lateral parts located in the two lateral side portions of the body cushion 400 and extended with a central part thereof in the middle portion of the body cushion 400 is jointly formed in a Ü shape corresponding to the second supporting wall 200F. A child's body abuts the body cushion 400 when the child is sitting on the child safety seat. When a driving direction is changing or a car gets hit, the child's body bumps into the body cushion 400 so as to apply a hitting force to the second foam cushion 700, the buffer plate 500, and the first foam cushion 600. Firstly, the second foam cushion 700 receives the hitting force and provides the buffer function. Next, the buffer plate 500 receives the hitting force and can increase a thrust surface area of the first foam cushion 600 to reduce a hitting pressure on each unit area of the first foam cushion 600, so that the first foam cushion 600 is capable of providing an enhanced buffer effect and cannot be extremely deformed. Therefore, it can enhance safety of the child safety seat. It should be noted that the second foam cushion 700 provides the buffer function in the beginning, and the buffer plate 500 has a certain degree of flexibility, so as to prevent the child from harm effectively.

According to FIG. 1 to FIG. 18, operational principles and functions of the child safety seat of the present invention are summarized as follows.

When a child is sitting on the child safety seat, the child's head abuts the head cushion 300 and the child's body abuts the body cushion 400. When a driving direction is changing or a car gets hit, the child's head bumps into the headrest 300 so that the buffer plate 500 and the first foam cushion 600 receive a hitting force. As the child's head is small, a thrust surface area of the buffer plate 500 is small accordingly. The buffer plate 500 increases the thrust surface area of the first foam cushion 600 and reduces a hitting pressure on each unit area of the first foam cushion 600 so that the first foam cushion 600 is capable of providing an enhanced buffer effect and cannot be extremely deformed. Hence, it can enhance safety of the child safety seat. It should be noted that the buffer plate 500 has a certain degree of flexibility for preventing the child from harm.

The child's body bumps into the body cushion 400 so that the second foam cushion 7 00, the buffer plate 500, and the first foam cushion 600 receive a hitting force. Firstly, the second foam cushion 700 receives the hitting force and absorbs the hitting force applied on the child's body. Next, the buffer plate 500 receives the hitting force and can increase a thrust surface area of the first foam cushion 600 to reduce a hitting pressure on each unit area of the first foam cushion 600, so that the first foam cushion 600 is capable of providing an enhanced buffer effect and cannot be extremely deformed. Therefore, it can enhance safety of the child safety seat. It should be noted that the second foam cushion 700 absorbs the hitting force applied on the child's body in the beginning, and the buffer plate 500 has a certain degree of flexibility so as to prevent the child from harm effectively.

In contrast to the prior art, the first foam cushion 600, the buffer plate 500, and the second foam cushion 7 00 are orderly disposed on the inner wall F of the child safety seat. When an emergency brake occurs or a driving direction is changing, the child bumps into the second foam cushion 700 by the inertial effect and the second foam cushion 700 can provide a buffer effect to the child. Then, the buffer plate 500 is forced to hit the first foam cushion 600 and can increase the a thrust surface area of the first foam cushion 600 so as to reduce a hitting pressure on each unit area of the first foam cushion 600. Thus the first foam cushion is not extremely deformed, the impact resistance of the child safety seat is enhanced, and the safety of the child safety seat can be improved greatly.

Those skilled in the art will readily observe that numerous modifications and alterations of the device and method may be made while retaining the teachings of the invention.

Claims

A safety seat for children comprising an inner wall, an inner space surrounded by the inner wall, wherein the safety seat further comprises a buffer plate and a first foam cushion, wherein the buffer plate. and the first foam pad is arranged in the inner space and the first foam pad is arranged between the baffle plate and the inner wall.

The child safety seat according to claim 1, wherein the riser plate is arranged in at least one of a central portion and a lateral side portion of the safety seat.

The child safety seat according to claim 1, wherein the buffer plate has a U-shaped cross section.

The child safety seat according to claim 1, wherein the first foam cushion is arranged in a central part and / or a lateral side part of the safety seat.

The child safety seat according to claim 1, wherein the first foam cushion has a U-shaped cross section.

The child safety seat according to claim 1, wherein the stiffness of the heating plate is greater than the stiffness of the first foam cushion.

The child safety seat according to claim 1, wherein the heater plate is made of PE, PP, EPS, EPP or EPO.

The child safety seat according to claim 1, further comprising an outer covering for covering the bump plate and the first foam pad.

The child safety seat according to claim 1, further comprising: a first outer covering for covering the bump plate; and a second outer covering for covering the first foam pad.

The child safety seat according to claim 1, further comprising a backrest and a headrest mounted on an upper portion of the backrest, wherein the bump plate and the first foam cushion are installed in the headrest.

The child safety seat according to claim 1, further comprising a backrest, a headrest mounted on an upper portion of the backrest and a head cushion connected to the headrest, wherein the first foam cushion is installed in the headrest and wherein the bump plate is installed in the headrest pillow.

The child safety seat according to claim 1, further comprising a backrest and a body cushion disposed on a lower part of the backrest, wherein the bump plate and the first foam cushion are installed in the body cushion.

The child safety seat according to claim 1, further comprising a second foam cushion, wherein the baffle plate is arranged between the first and second foam cushion.

The child safety seat according to claim 13, wherein the second foam cushion is arranged in a middle portion and / or a lateral side portion of the. child seat.

The child safety seat according to claim 13, wherein the second foam cushion has a U-shaped cross section.

The child safety seat according to claim 13, further comprising an outer covering for covering the heating plate, the first foam pad and the second foam pad.

The child safety seat according to claim 13, further comprising: a first outer covering for covering the bump plate and the second foam cushion; and a second outer covering for covering the first foam pad.

The child safety seat according to claim 13, further comprising a backrest and a headrest mounted on an upper portion of the backrest, the bump plate, the first foam cushion and the second foam cushion being installed in the headrest.

The child safety seat according to claim 13, further comprising a backrest, a headrest mounted on an upper portion of the backrest and a head cushion connected to the headrest, wherein the first foam cushion is installed in the headrest and wherein the bump plate and the second foam cushion are arranged in the pillow.

The child safety seat according to claim 14, further comprising a backrest and a body cushion arranged on a lower part of the backrest, the bump plate, the first foam cushion and the second foam cushion being arranged in the body cushion.