Plastic shell for carrier seat backrest and carrier backrest
By setting reinforcements on the edge of the plastic shell of the carrier seat back, the problem of plastic shell rupture under the impact of the child seat fixing strip is solved, and effective resistance to the impact is achieved.
Patent Information
- Application Number
- CN202421195151.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2023-05-31
- Filing Date
- 2024-05-29
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-05-29
AI Technical Summary
The plastic shell of the vehicle seat back is prone to rupture under the impact of the child seat fixing strip, and the prior art is difficult to effectively solve this problem.
At least two reinforcements are arranged at the edge of the plastic shell, with a reinforcing width between 3 and 10 cm, which is at least equal to the width of the child seat fixing strip. The reinforcements are evenly distributed on the reinforcement width, between 2 and 20, and are arranged basically along the upper edge of the plastic shell, and are made integrally with the plastic shell.
By setting up the reinforcement, the plastic shell has an ability to withstand impact on the child seat fixed strips, effectively avoiding the rupture of the plastic shell.
Smart Images
Figure CN222946598U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a plastic shell for a vehicle seat backrest and the vehicle backrest. The plastic shell is reinforced to improve its bearing capacity for the impact on its edge, and the impact can be caused by a fixing strip of a child seat. Background Art
[0002] It is known to manufacture vehicle seats by means of an articulated seat and backrest. The backrest is usually made by a plastic shell and usually by plastic molding. The plastic shell serves as the structure of the backrest. It is completed by a pad or cushion arranged on the front side relative to the plastic shell.
[0003] It is also known to arrange a child seat on a carrier seat and to secure the high point of the child seat to the backrest of the carrier seat by means of a strap which extends substantially vertically upwards from the child seat facing the front of the backrest, passes between the feet of the headrest, wraps around the upper edge of the backrest in order to be lowered again and secured to an anchor provided at the back of the backrest.
[0004] During a crash test, the strip strikes the upper edge of the backrest and its plastic shell can break.
[0005] Furthermore, a method is being sought to avoid this rupture. Utility Model Content
[0006] To this end, the utility model relates to a plastic shell of a vehicle seat backrest, which comprises at least two reinforcements, which are constructed to be arranged facing a seat belt, in particular a child seat belt, which is used to bear on the vehicle seat backrest, in particular, the at least two reinforcements are arranged at the edge of the plastic shell.
[0007] Specific features or embodiments that may be used alone or in combination are as follows:
[0008] - the edge has a substantially forwardly folded profile, and the reinforcement is arranged in the fold, substantially perpendicular to the edge,
[0009] - the reinforcements are substantially planar and substantially parallel to each other,
[0010] - the reinforcements are arranged over a reinforcement width measured parallel to the edge of between 3 and 10 cm,
[0011] - the reinforcement width is at least equal to the width of the child seat's fixing straps,
[0012] - reinforcements are evenly distributed over the reinforcement width,
[0013] - the number of reinforcements is between 2 and 20,
[0014] - the reinforcement element is arranged substantially along the upper edge of the plastic housing,
[0015] - the reinforcement is arranged substantially in the middle of the edge circumscribing the plastic,
[0016] - The reinforcement is made integrally with the plastic housing.
[0017] According to a second aspect of the present invention, a vehicle seat back comprises such a plastic shell.
[0018] The utility model relates to a plastic shell of a vehicle seat backrest, which comprises at least two reinforcement members and is configured to face a seat belt, in particular a child seat belt. At least a part of the child seat is used to be supported on the vehicle seat backrest. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The present invention will be better understood by reading the following description which is given by way of example only and with reference to the accompanying drawings, in which:
[0020] Figure 1 The backrest shell is shown in a front perspective view,
[0021] Figure 2 The same backrest shell is shown in a rear perspective view,
[0022] Figure 3 Details of the reinforcement are shown in perspective view.
[0023] Reference numerals list
[0024] 1: Plastic shell, 2: Reinforcement, 3: Edge, 4: Reinforcement width, A: Anchor point, C: Strip, T: Headrest bar. DETAILED DESCRIPTION
[0025] The vehicle seat comprises a seat and a backrest which are articulated to each other. The backrest is usually made by a plastic shell, usually by plastic molding. The plastic shell serves as the structure of the backrest. It is supplemented by a pad or cushion arranged in front relative to the plastic shell.
[0026] The child seat can be placed on the carrier seat. It is placed on the cushion of the seat and supported at the rear against the cushion of the backrest. It is fixed at multiple points. The upper fixing point fixes the upper point of the child seat to the backrest of the carrier seat by a strap C extending upward from the child seat, along the front surface of the backrest, through the legs T of the headrest (such as Figure 1 As shown), it is wrapped around the upper edge 3 of the backrest from front to back so as to be lowered again and fixed to the anchor a arranged on the back of the backrest in the rear of the plastic shell 1, as shown Figure 2 shown.
[0027] Reference Figure 1The utility model relates to a plastic shell 1. The plastic shell 1 is a structural shell of a vehicle seat backrest. In order to allow the plastic shell 1 to withstand the impact on its edge 3 caused by the fixing strap C fixing the child seat, the utility model proposes to strengthen the plastic shell 1.
[0028] To this end, according to the features of the present invention, more specifically as follows Figure 3 As shown, the plastic housing 1 comprises at least two reinforcement elements 2 arranged at the level of an edge 3 of the plastic housing 1 .
[0029] The plastic shell 1 has a substantially planar shape, which is substantially defined by a rectangle with rounded corners. The substantially straight edge 3 has a substantially forwardly folded transverse profile. Thus, the plastic shell 1 forms a container capable of accommodating a backrest cushion, which is arranged on the front face of the plastic shell 1.
[0030] according to Figure 3 Another feature shown in more detail in FIG. 1 is that the reinforcements 2 are arranged in the fold formed by the contour of the edge 3. These reinforcements advantageously form supports or ribs by connecting the two edges of the fold. In addition, the reinforcements 2 are preferably arranged substantially perpendicular to the edge 3. In addition, the reinforcements 2 are preferably arranged perpendicular to the average plane of the plastic housing 1.
[0031] According to another characteristic, the reinforcements 2 are substantially planar and substantially parallel to one another.
[0032] According to another characteristic, the reinforcement 2 is provided on a reduced portion of the edge 3 over a reinforcement width 4 measured parallel to the edge 3 , this reinforcement width 4 being comprised between 3 and 10 cm.
[0033] According to another characteristic, the reinforcement width 4 is at least equal to the width of the fixing strap C fixing the child seat. Advantageously, the reinforcement width 4 is equal to the width of the strap C in order not to consume too much material.
[0034] Advantageously, in order to properly distribute the stresses in the event of an impact, according to another characteristic, the reinforcements 2 are regularly arranged over the reinforcement width 4 and are evenly distributed, ie with a constant spacing between two adjacent reinforcements 2 .
[0035] For this purpose, the number of reinforcements 2 is between a minimum value 2 and a maximum value that allows little stress to be absorbed. The greater the number of reinforcements 2, the better the reinforcement of the edge 3 of the plastic housing 1. The maximum number is determined by manufacturing constraints. Taking into account the size to be covered, i.e. the reinforcement width 4, a maximum number of 20 is reasonably selected.
[0036] The reinforcement 2 is designed to be arranged below the support point of the strap C, aligned with the passage of the strap C. For the upper anchorage point of the child seat, the strap C passes between the two legs T of the headrest and wraps around the edge 3 of the plastic shell 1, i.e. around the upper edge 3, to reach the anchorage point A. Thus, according to another feature, the reinforcement 2 is arranged substantially in the middle of the upper edge 3 of the plastic shell 1.
[0037] According to another advantageous feature, the reinforcement 2 is made integrally with the plastic housing 1. The plastic housing 1 is usually made by injection molding. The mold of the plastic housing 1 needs to be modified to integrate the reinforcement 2. This is the only modification caused by the utility model in the manufacturing scope. Then, the plastic housing 1 reinforced by the utility model can be used in exactly the same way.
[0038] The utility model also relates to a vehicle seat comprising such a plastic shell 1, in particular a motor vehicle seat shell.
[0039] The utility model has been described and illustrated in detail in the drawings and the foregoing description. This must be considered as illustrative and given by way of example, rather than limiting the utility model to this description. Many variations are possible.
Claims
1. A plastic shell (1) for a vehicle seat backrest, comprising at least two reinforcement members (2), characterized in that: The reinforcement is configured to be disposed facing a child seat belt designed to be supported on the carrier seat back.
2. The plastic shell (1) for a vehicle seat backrest according to claim 1, characterized in that The at least two reinforcements are arranged at the level of an edge (3) of the plastic housing, the edge (3) having a profile that is substantially folded forwards, and wherein the reinforcement (2) is arranged in the fold, substantially perpendicular to the edge (3).
3. The plastic shell (1) for a vehicle seat backrest according to claim 1 or 2, characterized in that: The reinforcements (2) are substantially planar and substantially parallel to each other.
4. The plastic shell (1) for a vehicle seat backrest according to claim 2, characterized in that: The reinforcement (2) is arranged over a reinforcement width (4) measured parallel to the edge (3) of between 3 and 10 cm.
5. The plastic shell (1) for a vehicle seat backrest according to claim 4, characterized in that The reinforced width (4) is at least equal to the width of the fixing strap (C) fixing the child seat.
6. The plastic shell (1) for a vehicle seat backrest according to claim 5, characterized in that The reinforcement members (2) are evenly distributed over the reinforcement width (4).
7. The plastic shell (1) for a vehicle seat backrest according to claim 1 or 2, characterized in that: The number of the reinforcement members (2) is between 2 and 20.
8. The plastic shell (1) for a vehicle seat backrest according to claim 2, characterized in that The reinforcement (2) is arranged substantially in the middle of the edge (3) of the plastic shell (1) in the direction of the width of the backrest.
9. The plastic shell (1) for a vehicle seat backrest according to claim 1 or 2, characterized in that: The reinforcement member (2) is made integrally with the plastic shell (1).
10. A vehicle backrest, characterized in that: It comprises a plastic shell (1) for a vehicle seat backrest according to claim 1 or 2.