Framework for vehicle instrument panel and vehicle instrument panel
By designing a weakened area of the vehicle dashboard frame with inclined through holes, the high manufacturing cost problem caused by unreasonable skeleton structure design in the prior art is solved, and a more efficient manufacturing process is achieved.
Patent Information
- Application Number
- CN202420226757.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-30
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-01-30
AI Technical Summary
The skeleton structure of the existing vehicle dashboard is unreasonable and requires additional processing processes, resulting in high manufacturing costs and additional processing time.
Design a skeleton for a vehicle dashboard, having a cavity for accommodating airbags and a weakened area arranged on the surface of the cavity, each weakened area consisting of a transverse weakened line, two longitudinal weakened lines and a pre-break weakened The area defined by the line, at least a portion of the inner wall of the through-hole has an inclination extending in the axial direction of the through-hole.
By improving the shape and structure of the skeleton weakening lines, processing and manufacturing costs are reduced and a more efficient manufacturing process is achieved.
Smart Images
Figure CN222496071U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a frame for a vehicle instrument panel and a vehicle instrument panel comprising the frame. Background Art
[0002] The vehicle dashboard can reflect the working status of each vehicle system, or serve as an interior decoration in the vehicle. Commonly, the dashboard on the passenger side is equipped with an airbag system to protect the passengers in the event of a collision.
[0003] Such an instrument panel with an airbag system inside usually has a skeleton layer, a foam layer and a skin layer. The skeleton layer needs to be weakened by milling intermittent weakening lines on the skeleton layer, or laser processing can also be used to process the weakening lines. When a collision occurs, the skeleton layer breaks along the weakening lines, thereby ensuring that the airbag is effectively ejected.
[0004] However, the structural design of the skeleton layer of the existing instrument panel is unreasonable and requires additional processing steps, thus resulting in high manufacturing costs and requiring additional processing time. Utility Model Content
[0005] To this end, the utility model proposes a frame for a vehicle instrument panel to overcome the above problems, the frame having a cavity for accommodating an airbag, and at least one weakened area arranged on the surface of the cavity, each weakened area being arranged as an area defined by a transverse weakening line, two longitudinal weakening lines and a pre-fracture weakening line,
[0006] The one transverse weakening line, the two longitudinal weakening lines and the pre-fracture weakening line each have a series of through holes, and at least a portion of the inner wall of the through hole has a slope extending along the axial direction of the through hole.
[0007] Therefore, by designing the shape of the through hole so that at least a portion of the inner wall has a slope extending in the axial direction of the through hole, it is advantageous that, compared with the through hole without a slope in the prior art, the through hole with at least a portion of the inner wall having a slope extending in the axial direction of the through hole can be injected together with the skeleton and reverse molded by using its slope. Therefore, compared with the traditional process of using a cold knife, a hot knife, or a laser to cut a weakening line on the molded skeleton, the manufacturing of the skeleton of the utility model can reduce the processing steps and reduce the manufacturing cost, and this effect is achieved by improving the shape and structure of the skeleton weakening line.
[0008] According to a preferred embodiment, the skeleton comprises one or more of the following features, which can be selected individually or in combination:
[0009] - The through holes of the one transverse weakening line, the two longitudinal weakening lines and the pre-fracture weakening line are all long strip-shaped through holes.
[0010] - Both ends of the long strip through hole have outer protrusions.
[0011] - The length of the elongated through hole of the pre-fracture weakening line is greater than the length of the elongated through holes of the two longitudinal weakening lines, and the length of the elongated through holes of the two longitudinal weakening lines is greater than the length of the elongated through hole of the one transverse weakening line.
[0012] The skeleton has two weakened areas, the two weakened areas share a pre-fracture weakening line, and the shared pre-fracture weakening line is located between two transverse weakening lines of the two weakened areas.
[0013] - The length of the long strip through holes of the pre-fracture weakening line is 12 to 16 mm, the length of the long strip through holes of the two longitudinal weakening lines is 8 to 12 mm, and the length of the long strip through holes of the two transverse weakening lines is 3 to 6 mm.
[0014] - A pair of through holes at both ends of the pre-fracture weakening line respectively extend from the normal direction of a pair of through holes of the two longitudinal weakening lines.
[0015] - A series of through holes of the pre-break weakened line are arranged in a wavy line.
[0016] The inner wall of the through hole has a slope of between 1° and 10° along the axial direction of the through hole.
[0017] In addition, the utility model also proposes a vehicle dashboard, which includes a frame and a skin as described in any of the above embodiments, wherein the skin is coated on the outside of the frame, the skin is made of PVC or TPO or PU, and the frame is made of thermoplastic plastic.
[0018] Furthermore, the vehicle dashboard also includes a tactile layer arranged between the surface skin and the frame, and the tactile layer is made of 3D mesh fabric or polyurethane foam. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] It should be understood that, in the present invention, except for obvious contradictions or incompatibilities, all features, variations and / or specific embodiments may be combined in a variety of combinations.
[0020] Other features and advantages of the present invention will become apparent by reading the following specific embodiments as non-limiting descriptions in conjunction with the accompanying drawings, in which:
[0021] - Figure 1 is a front view of a framework for a vehicle instrument panel according to an embodiment of the utility model;
[0022] - Figure 2 yes Figure 1 A magnified view of a weakened area of the skeleton;
[0023] - Figure 3 yes Figure 2 An enlarged view of a local C of the weakened area;
[0024] - Figure 4 yes Figure 2 An enlarged view of a local D of the weakened area;
[0025] - Figure 5 yes Figure 2 An enlarged view of a local E of the weakened area;
[0026] - Figure 6 yes Figure 2 A magnified view of a local F of the weakened area;
[0027] - Figure 7 yes Figure 2 A magnified view of the local G of the weakened area;
[0028] - Figure 8 yes Figure 2 A view of the section AA of the weakened area;
[0029] - Fig. 9 yes Figure 2 A view of section BB of the weakened area;
[0030] - Fig.10 yes Figure 2 A magnified view of the local H of the weakened area;
[0031] - Fig.11 yes Figure 2 A view of a cross section JJ of a weakened area;
[0032] - Fig.12 is a perspective view of a vehicle instrument panel according to a first embodiment of the utility model;
[0033] - Fig.13 2 is a perspective view of a vehicle instrument panel according to a second embodiment of the present utility model. DETAILED DESCRIPTION
[0034] It should be understood that the above drawings are not true to scale, but are merely simplified diagrams for illustrating various preferred features of the basic principles of the present invention. The design features disclosed in the present invention, such as size, direction, positioning and shape, are determined according to specific applications and use environments.
[0035] In the following description, when referring to absolute position qualifiers, such as the terms "front", "back", "top", "bottom", "left", "right", etc., or relative position qualifiers, such as the terms "above", "below", "upper", "lower", etc., or direction qualifiers, such as "horizontal", "vertical", "lateral", "longitudinal", etc., unless otherwise specified, the indicated element numbers are given according to the direction of the drawing.
[0036] The present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings. In these drawings, the same reference numerals refer to the same or equivalent elements of the present invention in all the drawings.
[0037] refer to Figure 1 , Figure 1 The frame 1 for a vehicle instrument panel according to an embodiment of the present invention is shown, and the frame 1 has a cavity 10 for accommodating an airbag (refer to Fig.12 and Fig.13 ), two weakened areas 12a, 12b arranged on the cavity surface 11, and an edge 13 extending from the periphery of the cavity 10. It can be understood that in other variant forms, the cavity surface 11 can be arranged to have only the weakened area 12a, or only the weakened area 12b.
[0038] The airbag is accommodated in the cavity 10 . The cavity 10 has an opening that opens toward the airbag. The inner space of the cavity 10 constitutes a detonation channel of the airbag.
[0039] When a collision occurs, the airbag expands and the weakened areas 12a, 12b of the cavity surface 11 are squeezed by the airbag and break. It should be noted that although it is desirable for the weakened areas 12a, 12b to break, it is not desirable for the weakened areas 12a, 12b to break completely and splash into the vehicle compartment to cause secondary injuries to passengers.
[0040] The edge 13 radially extends from the opening of the cavity 10 to the periphery, and a mounting hole is provided in the edge 13 so that the frame 1 can be fixedly mounted in the vehicle frame by a known connection method.
[0041] In addition, the cavity surface 11 is not completely flat. For example, the edge of the cavity surface 11 may have a convex or concave decorative contour.
[0042] refer to Figure 2 , Figure 2 Two weakened areas 12 a and 12 b of the skeleton 1 are shown, which are arranged in the center of the cavity surface 11 and are generally rectangular in shape, occupying about one quarter to one half of the cavity surface 11 .
[0043] The weakened areas 12a, 12b are each configured as a closed area defined by a transverse weakening line 20, two longitudinal weakening lines 30 arranged on both sides of the transverse weakening line 20, and a pre-break weakening line 40 arranged opposite to the transverse weakening line 20, wherein the pre-break weakening lines 40 of the weakened areas 12a, 12b share a pre-break weakening line 40, and the shared pre-break weakening line 40 is located between the two transverse weakening lines 20 of the two weakened areas, wherein the two longitudinal weakening lines 30 of the weakened area 12a and the two longitudinal weakening lines 30 of the weakened area 12b can be shared or at least partially overlapped, for example, the two longitudinal weakening lines of the weakened area 12a are the upper part of the shared two longitudinal weakening lines, and the two longitudinal weakening lines of the weakened area 12b are the lower part of the shared two longitudinal weakening lines.
[0044] The pre-fracture weakened line 40 is arranged in a wave line manner, for example, there is one crest part and two trough parts in the entire weakened area, or there is one trough part and two crest parts in the entire weakened area. The advantage of this wave line arrangement is that no matter from which direction the force that destroys the weakened line comes, a strong shear force can be formed on the weakened line at a certain point in the wave line, thereby facilitating the breaking of the weakened line.
[0045] The transverse weakening line 20 includes a series of first through holes 50. The first through holes 50 are long strip-shaped through holes, and both ends of the through holes may have convex portions. The convex portions may be arcs or protruding tips, such as Figure 3 As shown, the length is approximately 3 to 6 mm, preferably 3 to 5 mm, in particular 4 mm, and the width is approximately 1.0 to 1.2 mm, preferably 1.0 mm.
[0046] Optionally, a single or multiple variable first through holes 55 may be provided in a series of first through holes 50 of the transverse weakening line 20. The variable first through holes 55 are also long strip through holes, and both ends may have convex portions, and the convex portions may be arcs or protruding tips, such as Figure 4 As shown, the length of the modified first through hole 55 is slightly longer than that of the first through hole 50 . In this example, the modified first through hole 55 is disposed in the middle of the series of first through holes 50 .
[0047] The longitudinal weakening line 30 includes a series of second through holes 60. The second through holes 60 are long strip-shaped through holes, and both ends of the second through holes may have convex portions. The convex portions may be arcs or protruding tips, such as Figure 5 As shown, the length is approximately 8 to 12 mm, preferably 9 to 11 mm, in particular 10 mm, and the width is approximately 1.0 to 1.2 mm, preferably 1.0 mm.
[0048] The pre-fracture weakening line 40 includes a series of third through holes 70. The third through holes 70 are long strip-shaped through holes, and both ends of the through holes may have convex portions. The convex portions may be arcs or protruding tips, such as Figure 6 As shown, the length is approximately 12 to 16 mm, preferably 13 to 15 mm, especially 15 mm, and the width is approximately 1.0 to 1.2 mm, preferably 1.0 mm.
[0049] In this example, the length of the third through hole 70 of the pre-break weakened line 40 is greater than the length of the second through hole 60 of the longitudinal weakened line 30, and the length of the second through hole 60 of the longitudinal weakened line 30 is greater than the length of the first through hole 50 of the transverse weakened line 20. In this way, the pre-break weakened line 40 is broken first, and then the longitudinal weakened line 30 is broken, while ensuring that the transverse weakened line 20 is not broken or only partially broken, so as to prevent the weakened area from completely breaking and splashing into the car to cause secondary damage to the passengers.
[0050] refer to Figure 7 , Figure 7 The illustrated weakened area is a corner area where the transverse weakening line 20 intersects the longitudinal weakening line 30 . In this example, the corner area is a rounded corner, and the curvature of the rounded corner is defined by the curved transverse through hole 58 and the curved longitudinal through hole 68 .
[0051] refer to Figure 8 , Figure 8 The cross section AA of the weakened area is shown, from which it can be seen that the inner wall of the short side portion of the first through hole 50 of the transverse weakening line 20 has a slope α extending in the axial direction of the through hole, and the slope α is between 1° and 10°, preferably 6°. Optionally or additionally, the inner wall of the long side portion of the first through hole 50 also has a slope extending in the axial direction of the through hole, and the slope is between 1° and 10°, preferably 6°.
[0052] refer to Fig. 9 , Fig. 9 The cross section BB of the weakened area is shown. It can be seen from the figure that the inner wall of the short side portion of the third through hole 70 of the pre-fracture weakening line 40 has a slope β extending along the axial direction of the through hole, and the slope β is between 1° and 10°, preferably 6°. Optionally or additionally, the inner wall of the long side portion of the third through hole 70 also has a slope extending along the axial direction of the through hole, and the slope is between 1° and 10°, preferably 6°.
[0053] Similarly, the inner wall of the short side portion of the second through hole 60 of the longitudinal weakening line 30 also has a slope extending in the axial direction of the through hole, and the slope is between 1° and 10°, preferably between 4° and 8°, and in particular 6°. Optionally or additionally, the inner wall of the long side portion of the second through hole 60 also has a slope extending in the axial direction of the through hole, and the slope is between 1° and 10°, preferably between 4° and 8°, and in particular 6°.
[0054] Therefore, by designing the shape of the through hole of the weakening line so that the inner wall of the short side part and / or the long side part has a slope extending in the axial direction of the through hole, it is advantageous that, compared with the through hole without a slope in the prior art, the through hole with the inner wall of the short side part and / or the long side part having a slope extending in the axial direction of the through hole can be injected together with the skeleton and reverse molded by using its slope. Therefore, compared with the traditional process of using a cold knife, a hot knife, or a laser to cut the weakening line on the molded skeleton, the manufacture of the skeleton of the utility model can reduce the processing steps and reduce the manufacturing cost. When the slope is between 1° and 10°, preferably between 4° and 8°, the injection molded skeleton is easy to demould, so as to facilitate one-piece injection molding, especially when the slope is 6°, it is not easy to produce defects during the one-piece injection molding of the small-sized long strip through hole, so that the weakening line is easy to break along the inclined direction while ensuring the strength, meeting the requirements of explosive fracture.
[0055] refer to Fig.10 The pair of through holes at both ends of the pre-break weakened line 40 extend from the normal direction of the pair of through holes near the middle of the two longitudinal weakened lines 30, respectively, to form a substantially "T"-shaped through hole 80. Optionally or additionally, the pair of substantially "T"-shaped through holes 80 at both ends of the pre-break weakened line 40 are not located on the same horizontal line, that is, there may be a height difference between the two substantially "T"-shaped through holes 80, so as to facilitate the breaking of the weakened line.
[0056] In addition, if Fig.11 As shown, a slot 90 may be provided on the back side of the frame between two adjacent first through holes 50 of the transverse weakening line 20 to facilitate the breaking of the weakening line.
[0057] Similarly, a groove may be provided on the back side of the frame between two adjacent second through holes 60 of the longitudinal weakening line 30 to facilitate the breaking of the weakening line.
[0058] Similarly, a groove may be provided on the back side of the frame between two adjacent third through holes 70 of the pre-fracture weakening line 40 to facilitate the breaking of the weakening line.
[0059] like Fig.12 As shown, Fig.12 A vehicle dashboard 100 according to a first embodiment of the utility model is shown, which includes a frame 1 and a skin 2. The frame 1 can be any of the frames mentioned above, and the frame can be made of thermoplastic plastic such as P / E-GF20 injection molding; the skin 2 is coated on the outside of the frame 1, and the skin can be made of PVC or TPO or PU or, preferably, the skin is also coated with a layer of PP foam.
[0060] Optionally, the skin 2 is also provided with a weakening line at a position corresponding to the weakened area 12 of the skeleton 1 .
[0061] like Fig.13 As shown, Fig.13 A vehicle dashboard 100 of a second embodiment of the utility model is shown, which includes a frame 1, a skin 2 and a tactile layer 3. The frame 1 can be any of the frames mentioned above, and the frame can be made of thermoplastic plastic such as P / E-GF20 injection molding; the skin 2 is coated on the outside of the frame 1, and the skin can be made of PVC or TPO or PU or, preferably, the skin is also coated with a layer of PP foam; and the tactile layer 3 is arranged between the skin and the frame to provide a comfortable touch, and the tactile layer can be made of 3D mesh fabric or polyurethane foam.
[0062] Optionally, the skin 2 is also provided with a weakening line at a position corresponding to the weakened area 12 of the skeleton 1 .
[0063] Optionally, the tactile layer 3 is also provided with a weakened line at a position corresponding to the weakened area 12 of the frame 1 .
[0064] The above embodiments are only examples and do not limit the scope of the present invention. Based on this, those skilled in the art can foresee other embodiments that can achieve the same function within the scope of protection of the claims of the present invention, for example, the long side and short side of the long strip through hole described herein are not necessarily straight lines, but can also have an arc.
[0065] Those skilled in the art will be familiar with various embodiments and various modifications and improvements. In particular, it should be clear that, except for obvious contradictions or incompatibilities, the above-mentioned features, modifications and / or specific embodiments of the present invention can be combined with each other. All these embodiments and modifications and improvements belong to the protection scope of the present invention.
Claims
1. A frame (1) for a vehicle instrument panel, the frame (1) having a cavity (10) for accommodating an airbag, and at least one weakened area (12a, 12b) arranged on a surface (11) of the cavity, each weakened area being arranged as an area defined by a transverse weakening line (20), two longitudinal weakening lines (30) and a pre-fracture weakening line (40), It is characterized in that The one transverse weakened line, the two longitudinal weakened lines and the pre-fracture weakened line each have a series of through holes, and at least a portion of the inner wall of the through hole has a slope extending in the axial direction of the through hole.
2. The skeleton according to claim 1, characterized in that The through holes of the one transverse weakening line, the two longitudinal weakening lines and the pre-fracture weakening line are all long strip-shaped through holes.
3. The skeleton according to claim 2, characterized in that Both ends of the long strip through hole are provided with outer convex parts.
4. The skeleton according to claim 2, characterized in that: The length of the elongated through hole of the pre-fracture weakening line is greater than the length of the elongated through holes of the two longitudinal weakening lines, and the length of the elongated through holes of the two longitudinal weakening lines is greater than the length of the elongated through hole of the one transverse weakening line.
5. The skeleton according to claim 2, characterized in that: The skeleton (1) has two weakened areas (12a, 12b), the two weakened areas share a pre-fracture weakening line, and the shared pre-fracture weakening line is located between two transverse weakening lines of the two weakened areas.
6. The skeleton according to claim 5, characterized in that The length of the long strip through holes of the pre-fracture weakening line is 12 to 16 mm, the length of the long strip through holes of the two longitudinal weakening lines is 8 to 12 mm, and the length of the long strip through holes of the two transverse weakening lines is 3 to 6 mm.
7. The skeleton according to claim 5, characterized in that The pair of through holes at both ends of the pre-fracture weakening line respectively extend from the normal direction of the pair of through holes of the two longitudinal weakening lines.
8. The skeleton according to claim 5, characterized in that A series of through holes of the pre-break weakened line are arranged in a wavy line.
9. The skeleton according to claim 1, characterized in that: The slope of the inner wall of the through hole extending along the axial direction of the through hole is between 1° and 10°.
10. A vehicle dashboard (100), comprising a frame (1) according to any one of claims 1 to 9, and a skin (2), wherein the skin is coated on the outside of the frame, the skin is made of PVC or TPO or PU, and the frame is made of thermoplastic plastic.
11. The vehicle instrument panel according to claim 10, characterized in that: It also includes a tactile layer (3) arranged between the epidermis and the skeleton, and the tactile layer is made of 3D mesh fabric or polyurethane foam.