CN110300684B - 用于制造机动车的内部单元的方法和机动车的内部单元 - Google Patents

用于制造机动车的内部单元的方法和机动车的内部单元 Download PDF

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CN110300684B
CN110300684B CN201880012140.7A CN201880012140A CN110300684B CN 110300684 B CN110300684 B CN 110300684B CN 201880012140 A CN201880012140 A CN 201880012140A CN 110300684 B CN110300684 B CN 110300684B
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托马斯·维特曼
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Lisa Draexlmaier GmbH
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/56—After-treatment of articles, e.g. for altering the shape
    • B29C44/5627—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/0055—Shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0081—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor of objects with parts connected by a thin section, e.g. hinge, tear line
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/005—Nuts or like thread-engaging members into which threads are cut during screwing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C2045/0093—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor of articles provided with an attaching element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/08—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles using several expanding or moulding steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2701/00—Use of unspecified macromolecular compounds for preformed parts, e.g. for inserts
    • B29K2701/12—Thermoplastic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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    • B32B2605/00—Vehicles
    • B32B2605/003—Interior finishings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • B60R2013/0287—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners integrating other functions or accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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    • F16B5/06—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips
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    • F16B5/0621—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other in parallel relationship
    • F16B5/0642—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other in parallel relationship the plates being arranged one on top of the other and in full close contact with each other

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  • Combustion & Propulsion (AREA)
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Abstract

本发明涉及一种用于机动车的内部单元(2)的制造方法，包括以下步骤：通过注塑成型制造具有封闭的前侧(9)的载体(5)，其中在载体(5)的后侧(10)上制造螺钉凸台(8)，螺钉凸台(8)的钻孔(11)在载体(5)的前侧(9)的方向上以载体区段(12)封闭，该载体区段(12)与载体的其余部分相比具有减小的壁厚(13)；在载体(5)的封闭的前侧(9)上制造泡沫塑料层(6)。此外，本发明涉及一种用于机动车的内部单元(2)。

Description

用于制造机动车的内部单元的方法和机动车的内部单元
技术领域
本发明涉及一种用于制造机动车的内部单元的方法以及机动车的内部单元。
背景技术
机动车的内部单元，例如仪表面板载体，尤其是出于减轻重量的原因而越来越多地由复合材料制成，特别是由纤维增强塑料制成。这种复合材料常常还具有中间发泡层，这尤其是有助于在车辆内部中的特别高质量的触觉印象。
通常，例如在仪表面板载体上还会拧紧有附件，例如装饰条或类似物。为了实现可靠的拧紧，通常使用所谓的螺钉夹。在仪表面板载体的钻孔的区域中布置螺钉夹，该螺钉夹用作如下螺钉的配对件，通过该螺钉可以将附件固定在仪表面板载体上。这种螺钉夹的安置和使用相对昂贵并且尤其对装配时间和装配成本有负面的影响。
发明内容
本发明的任务是：使得附件到由复合材料制造的内部单元上的拧紧简化。
该任务通过具有独立专利权利要求的特征的用于制造机动车的内部单元的方法以及机动车的内部单元来解决。具有本发明的符合目的和非常见的扩展的有利构型方案在从属权利要求中被说明。
在根据本发明的用于制造机动车的内部单元的方法中，具有封闭的前侧的载体通过注塑成型制造，其中在载体的后侧上制造螺钉凸台(Schraubdom)，螺钉凸台的钻孔在载体的前侧的方向上以载体区段被封闭，该载体区段与载体的其余部分相比具有减小的壁厚。此外，在根据本发明的方法的过程中，在载体的封闭的前侧上制造泡沫塑料层。
具有螺钉凸台的载体因此借由注塑成型制造，其中本发明的一个特别重要的方面在于，所述螺钉凸台的钻孔以在注塑成型方法的过程中在载体前侧的方向上被封闭的方式来构造。这是通过使所述载体区段在载体的前侧的方向上封闭该钻孔来实现的。由于该载体区段与载体的其余部分相比具有减小的壁厚，一旦螺钉必须被拧入螺钉凸台的钻孔以便将附件拧在所述内部单元上，该载体区段就可以特别简单地被切断或穿透。
由于内部单元一方面具有载体且另一方面具有泡沫塑料层，因此重要的是在内部单元的制造期间该载体的前侧是封闭的。由此可以确保在发泡过程期间，即在载体上制造泡沫塑料层的期间，没有泡沫材料穿过载体。由于螺钉凸台的钻孔在载体的前侧的方向上以载体区段被封闭，因此在螺钉凸台的区域中也可以可靠地确保在泡沫塑料层的制造期间没有泡沫塑料材料穿过载体。
通过设置用作螺钉的旋入管套或螺纹管的螺钉凸台，可以以特别简单和不复杂的方式将附件与内部单元拧紧。在载体前侧的方向上封闭该钻孔的载体区段，在内部单元的制造过程期间形成一种膜，在制造泡沫塑料层的期间没有泡沫塑料能够通过该膜穿过，然而，一旦在完成内部单元后应拧紧附件，这种膜状的载体区段就可以相对容易地通过螺钉被穿透。本文开头所述的螺钉夹可以因此由于根据本发明的方法而省掉，其中由此于是也省掉螺钉夹的插上或定位的工作步骤。此外，通过使载体区段具有减小的壁厚，可以避免废料。
根据本发明的一个有利的实施方式规定：在制造泡沫塑料层后，封闭螺钉凸台的钻孔的载体区段借由冲压工具(Stanzwerkzeug)被穿透。优选地，在冲压过程的期间，冲压载体的其他区域。如果所制造的内部单元涉及例如仪表面板载体，则总归必须制造多个凹部或者还有通孔，并且确切地说在应当容纳一定组件、如显示器、操作元件及类似物的位置处制造。封闭螺钉凸台的钻孔的载体区段可以特别简单的方式被冲压，因为其具有减小的壁厚。在为了在前侧方向上释放螺钉凸台的钻孔而应当冲压载体区段的位置处，在使用冲压工具的情况下还可省去模具。这是因为基于载体区段的小厚度，该载体区段也可以在没有模具的情况下被穿透。代替借助冲压工具穿透载体区段，备选地还可以在制造泡沫塑料层之后借助螺钉穿透封闭螺钉凸台的钻孔的载体区段，该螺钉为了将附件固定在内部单元上而被拧入到螺钉凸台的钻孔中。换句话说，因此也可能的是，封闭螺钉凸台的钻孔的载体区段容易以螺钉的尖端被穿透，其中该螺钉总归被使用用于将附件固定在内部单元上。优选地，使用内螺纹滚压螺钉，该内螺纹滚压螺钉在拧入到载体区段的铸芯孔、即钻孔中时通过特定的螺纹几何形状而无切割地自形成配对螺纹。内螺纹滚压螺钉因此起到形状配合的防丢失件的作用(formschlüssige Verliersicherung)。当使用内螺纹滚压螺钉时，可以省略在螺钉凸台中进行螺纹切割的工艺步骤，这与额外的时间和成本优势相关。
本发明的另一有利实施方式规定：在泡沫塑料层的背离载体的一侧上制造装饰层。因此，内部单元优选地由三个不同的层构成，即装饰层和载体，其中在装饰层和载体之间制造泡沫塑料层。装饰层优选地在此在螺钉凸台的钻孔的区域中被穿通，使得在随后的拧紧期间，螺钉可以特别容易地穿引过装饰层。装饰层在此优选地在螺钉凸台的区域中在钻孔上方被穿透。
在本发明的另一个有利的构型方案中规定：通过喷涂或通过粉末烧结制造装饰层。在喷涂时，例如，提供了半模具，其对要制造的装饰层的轮廓进行塑造。借助于喷头，然后将制造装饰层的材料涂覆在模具上。由此产生了特别高的设计自由度，从而可以以简单的方式实现各种赋形。在粉末烧结(英文称为Powder Slush(粉末搪塑)或Slush Moulding(搪塑成型))的情况下，装饰层通过原型(Urformen)制作。在此也可实现在光学和触觉上吸引人的表面，因为可以将不同的粒面、例如以类似皮革的方式引入到所使用的模具中。作为原始材料，可以使用例如PVC或例如基于氨基甲酸酯、烯烃或聚酯的热塑性弹性体。首先，加热模具。然后将经加热的模具与塑料粉末放在一起，塑料粉末粘附在模具壁上并烧结。通过转动和旋转模具，得到装饰层的均匀厚度。随后，可以倒出多余的粉末。然后加热粘附的粉末以使其完全凝胶化。在冷却模具之后，然后可以移除装饰层。与旋转熔合工艺不同，这里不产生空心体，而是具有模具形状的厚壁箔。
本发明的另一有利实施方式规定：载体由纤维增强的热塑性塑料制成。优选使用长纤维增强聚丙烯。相对于短纤维增强热塑性塑料，长纤维增强热塑性塑料具有更高的抗冲击韧性并且它们的蠕变倾向也显著更低，这有利于它们在提高的质量要求情况下的应用，例如在汽车工业中的内部区域。
优选地，泡沫塑料层由聚氨酯泡沫制造。装饰层也可以例如基于聚氨酯来制造。
根据本发明的机动车的内部单元包括载体，该载体具有封闭的前侧，载体在自身的后侧上具有螺钉凸台，螺钉凸台的钻孔在载体的前侧的方向上以载体区段来被封闭，该载体区段与载体的其余部分相比具有减小的壁厚，其中在封闭的前侧上安置泡沫塑料层。根据本发明的方法的有利构型方案被视为是根据本发明的内部单元的有利构型方案，并且反之亦然。
本发明还涉及一种螺钉连接装置，其包括根据本发明的内部单元和根据本发明的内部单元的有利实施方式以及至少一个附件，该附件借助被拧入到螺钉凸台的钻孔中的螺钉而被固定在内部单元上。
本发明的其它优点、特征和细节从以下优选实施例的描述以及根据附图而得出。上文在说明书中提到的特征和特征组合以及在下文的附图说明和/或附图中单独示出的特征和特征组合在此不仅可以在所给出的组合中使用，而且可以在其他组合中使用或者可以单独使用，而并不偏离本发明的范围。
附图说明
附图中示出：
图1螺钉连接装置的示意性侧剖视图，其包括内部单元，附件在该内部单元上被拧紧，其中内部单元具有载体、泡沫塑料层和装饰层；
图2示意性侧剖视图，其中仅示出了内部单元，其包括装饰层、泡沫塑料层和载体，其中在该载体下侧构造螺钉凸台；和
图3在螺钉凸台的区域中的放大剖视图，其具有通过钻孔，该钻孔在泡沫塑料层的方向上由载体区段来封闭。
具体实施方式
螺钉连接装置1在图1中以示意性侧剖视图示出。螺钉连接装置1包括内部单元2和附件3，附件3通过螺钉4固定在内部单元2上。内部单元2具有多层结构。在此，内部单元2包括注塑成型的载体5、泡沫塑料层6和装饰层7。载体5还具有螺钉凸台8，其用作用于螺钉4的旋入管套或螺纹管，借助该螺钉使附件3在内部单元2上被拧紧。
内部单元2可以是例如仪表面板载体，其中附件3可以是例如被拧紧到仪表面板载体上的装饰条。装饰层7的背离泡沫塑料层6的一侧在此形成乘客可以看到的可见侧。通过设置集成的螺钉凸台8，附件3可以特别容易地固定在内部单元2上。
在图2中，内部单元2以示意性侧剖视图被单独示出。如已经提到的，载体5通过注塑成型制造，优选由长纤维增强聚丙烯制造。在此，制造具有封闭的前侧9的载体5，其中螺钉凸台8在注塑成型方法的过程中在载体5的后侧10上作为载体5的一体化组成部分被制造。螺钉凸台8的钻孔11优选在注塑成型方法的过程中直接一起制造。
在图3中，以放大的剖视图示出了图2中标记的区域B。在通过注塑成型制造载体5时，螺钉凸台8的钻孔11在前侧9的方向上以载体区段12封闭，载体区段12与载体5的其余部分相比具有显着减小的壁厚13。因此，借助注塑成型制造的载体5的整个前侧9不具有任何通孔。这是重要的，使得在进一步制造内部单元2时，制造泡沫塑料层6的泡沫塑料材料不会通过载体5而压穿。
装饰层7可以例如通过喷涂或通过粉末烧结来制造。例如，将装饰层7放入这里未示出的底模中，随后将泡沫塑料层6施加到装饰层7上。在这里同样未示出的上冲模中，容纳载体5，其中接着将底模和上冲模合上。由此制造了内部单元2形式的封闭的表皮泡沫载体(Haut-Schaum-
Figure BDA0002167821170000041
)。
在制造内部单元2之后，可以例如借助冲压工具穿透封闭螺钉凸台8的钻孔11的载体区段12。然而替代地，也可以使载体区段12保持完好无损。优选地，装饰层7在布置在螺钉凸台8的钻孔11上方的区域中被穿通(durchstochen)。一方面，螺钉4稍后可以更容易地被引导穿过装饰层7。另一方面可容易看出螺钉4必须在装饰层7上在哪个位置处通过。
装饰层可以例如具有1.5mm的厚度，其中封闭钻孔11的载体区段12可以例如具有仅0.2mm的厚度。
为了制造图1中所示的螺钉连接装置1，仅需将螺钉4通过螺钉凸台8的钻孔11上方的预先被穿通的装饰层7引入。泡沫塑料层6在此可以相对容易地借助螺钉4被穿透。这同样适用于载体区段12，因为该载体区段具有所述的非常小的壁厚13。螺钉4优选地是自攻螺钉，使得其自身将螺纹成形到螺钉凸台8的钻孔11中。可以由此省略用于螺钉凸台8的钻孔11的螺纹切割的单独制造步骤。由于设置螺钉凸台8，附件3因此可以借助螺钉4以特别简单且快速的方式固定在内部单元2上。
附图标记列表
1    螺钉连接装置
2    内部单元
3    附件
4    螺钉
5    载体
6    泡沫塑料层
7    装饰层
8    螺钉凸台
9    前侧
10   后侧
11   钻孔
12   载体区段
13   壁厚
B    区域

Claims (12)

1.一种用于制造机动车的内部单元(2)的方法，所述方法包括以下步骤：
-通过注塑成型制造具有封闭的前侧(9)的载体(5)，其中在所述载体(5)的后侧(10)上制造螺钉凸台(8)，所述螺钉凸台(8)的钻孔(11)在所述载体(5)的所述前侧(9)的方向上以载体区段(12)被封闭，所述载体区段与所述载体的其余部分相比具有减小的壁厚(13)；
-在所述载体(5)的所述封闭的前侧(9)上制造泡沫塑料层(6)。
2.根据权利要求1所述的方法，
其特征在于，
在制造所述泡沫塑料层(6)后，借助冲压工具穿透封闭所述螺钉凸台(8)的所述钻孔(11)的所述载体区段(12)。
3.根据权利要求1或2中任一项所述的方法，
其特征在于，
在所述泡沫塑料层(6)的背离所述载体(5)的一侧上制造装饰层(7)。
4.根据权利要求3所述的方法，
其特征在于，
所述装饰层(7)在所述螺钉凸台(8)的所述钻孔(11)的区域中被穿通。
5.根据权利要求3所述的方法，
其特征在于，
所述装饰层(7)借助喷涂或借助粉末烧结来制造。
6.根据权利要求4所述的方法，
其特征在于，
所述装饰层(7)借助喷涂或借助粉末烧结来制造。
7.根据前述权利要求1、2、4、5或6所述的方法，
其特征在于，
所述载体(5)由纤维增强的热塑性塑料来制造。
8.根据前述权利要求1、2、4、5或6所述的方法，
其特征在于，
所述泡沫塑料层(6)由聚氨酯泡沫制造。
9.根据前述权利要求3所述的方法，
其特征在于，
所述装饰层(7)由聚氨酯制造。
10.根据前述权利要求4至6中任一项所述的方法，
其特征在于，
所述装饰层(7)由聚氨酯制造。
11.机动车的内部单元(2)，所述内部单元包括载体(5)，所述载体具有封闭的前侧(9)，所述载体在自身的后侧(10)上具有螺钉凸台(8)，所述螺钉凸台的钻孔(11)在所述载体(5)的所述前侧(9)的方向上以载体区段(12)来被封闭，所述载体区段与所述载体(5)的其余部分相比具有减小的壁厚(13)，其中在所述封闭的前侧(9)上安置泡沫塑料层(6)。
12.螺钉连接装置(1)，所述螺钉连接装置包括根据权利要求9所述的内部单元(2)和至少一个附件(3)，所述附件(3)借助被拧入到螺钉凸台(8)的钻孔(11)中的螺钉(4)而被固定在所述内部单元(2)上。
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