DE102017215092A1 - Molded component, seat and method for producing a molded component - Google Patents

Abstract

In order to provide a mold component which is simple and inexpensive to manufacture, it is proposed that the mold component comprises one or more tubular supports and an additional structure molded onto the one or more tubular supports by plastic injection molding, the additional structure comprising two end regions of one or more tubular members the plurality of tubular support interconnects.

Description

The present invention relates to a mold component which can be used, for example, as a load-bearing structure in a vehicle seat.

Such molded components are formed, for example, of a plurality of metallic elements, which are connected to each other in particular by welding.

From the EP 2 479 060 A1 a vehicle seat is known in which a metallic carrier is provided with a molded plastic component.

The present invention has for its object to provide a mold component, which is simple and inexpensive to produce.

According to the invention, this object is achieved by a molding component which comprises one or more tubular supports and an additional structure which is injection molded onto the one or more tubular supports by plastic injection molding, the additional structure connecting two end regions of the one or more tubular supports.

Characterized in that the molded component on the one hand comprises a tubular support and on the other hand an additional structure molded thereon, the molded component can be produced easily and inexpensively, in particular additional functions can be integrated into the mold component in a simple and cost-effective manner.

It may be favorable if the additional structure forms a cross member, by means of which the two end regions of the one or more tubular supports are in particular connected to one another in a force-transmitting and / or stabilizing manner.

The molding component in particular comprises two or more than two tubular supports, which are connected to one another by means of one or more cross members formed by the additional structure.

For example, two substantially mutually parallel tubular support are provided, which are connected to each other in particular at the respective end regions by means of a respective cross member.

One or more of the one or more tubular supports are preferably formed from a metal material. Preferably, one or more of the one or more tubular carriers are brought into a predetermined shape in an hydroforming process.

In particular, steel, aluminum and / or magnesium and / or an alloy of one of the materials mentioned are provided as the metal material.

Alternatively or additionally, it may be provided that one or more of the one or more tubular support comprises or is formed from a plastic material. In particular, it may be provided that one or more of the one or more tubular support is designed as a glass fiber reinforced plastic pipe, in particular GRP pipe or CFRP pipe.

One or more of the one or more tubular supports are preferably encapsulated with the additional structure, wherein in particular a plurality of fixing portions of the additional structure which surround the tubular support in an annular manner are formed.

The attachment sections preferably surround the one or more tubular carriers in a form-fitting manner.

In particular, if the one or more tubular supports are not rotationally symmetrical, preferably flattened, at least partially or in sections, a fixation of the fixing sections secured to the rotation on the one or more supports also results.

The additional structure may be formed, for example, in one piece and / or in one piece.

In particular, the additional structure is preferably produced or producible by injection molding in a single process step.

It may be advantageous if the additional structure comprises or is formed from a thermoplastic material and / or a thermosetting material.

In addition, a fiber reinforcement, for example by means of short fibers or long fibers or continuous fibers, may be provided in particular.

Furthermore, inserts, reinforcements, fabrics, scrims or other supplements may be provided for the production of the additional structure.

In particular, an organic sheet can be integrated into the additional structure or produced by the production of the additional structure.

The plastic material is, for example, polyamide (PA) or polypropylene (PP) or a similar plastic material processable by injection molding.

It can be advantageous if one or more of the one or more tubular supports have at least one flattened region in which the additional structure acts on the one or more tubular supports.

In particular, it may be provided that bores are provided in the one or more tubular carriers in a flattened region of one or more tubular carriers, in particular after the shaping of the one or more carriers in a hydroforming process.

In one embodiment of the invention can be provided that one or more receiving devices for receiving additional components are formed by one or more of the one or more tubular support and / or by the additional structure.

In particular, an airbag, a headrest and / or a belt seat can be provided as additional components.

One or more additional components are particularly subsequently fixed to the mold component.

For example, as an integral part of a receiving device, an insert or an indentation or a bush can be arranged or formed on one or more tubular carriers.

One or more receiving devices are preferably formed by at least one bore and / or at least one recess and / or at least one attachment point on or in the one or more tubular carriers and / or the additional structure.

In particular, it can be provided that one or more fastening points of one or more receiving devices are formed during the production of the additional structure during the plastic injection molding, which are made accessible in particular after removal of the mold component and the attachment of holes for the one or more additional components.

It can be provided that at least one housing section of a housing of an additional component is formed by one or more of the one or more tubular supports and / or by the additional structure.

The entire housing of the additional component is then particularly easy to manufacture by another housing component is fixed to a formed by the additional structure and / or the one or more tubular support housing portion of the housing, for example by latching or plastic welding.

A housing is used in particular for receiving an additional component designed as an airbag or belt.

The object on which the invention is based can also be achieved by a molding component which comprises one or more tubular supports and an additional structure which is injection molded onto the one or more tubular supports by plastic injection molding, one or more of the one or more tubular supports forming a U-shape.

The one or more carriers thus preferably comprise two sections extending essentially parallel to one another, which in particular are connected to one another by means of an intermediate region.

At the opposite end of the intermediate region of the substantially mutually parallel sections in particular a cross member formed by the additional structure is arranged.

One or more substantially U-shaped tubular supports preferably surround an interior space which is at least partially filled by the additional structure or in which the additional structure extends at least in sections.

In particular, the additional structure preferably comprises a plate-shaped element which extends at least approximately parallel to a main extension plane of the one or more tubular carriers.

It may be favorable if the additional structure is fixed at least partially or in sections elastically yielding or resiliently on the one or more tubular supports.

It may be favorable if the molded component for this purpose comprises a separate spring device which is fixed on the one hand to the additional structure and on the other hand to the one or more tubular supports.

Alternatively, it can be provided that the additional structure has a shape, which is at least partially elastic permissibly securing the auxiliary structure to the one or more tubular supports.

For example, it can be provided that the additional structure comprises one or more meander-shaped sections which allow a resilient connection between one or more fixing sections of the additional structure on the one hand and, for example, a plate-shaped element of the additional structure on the other hand.

The molded component according to the invention is particularly suitable for use in a seat, for example a vehicle seat.

A vehicle seat is in particular a front seat of a passenger car. Preferably, the vehicle seat is a single seat. However, it can also be provided that the seat is a seat.

The seat may also be the seat of an aircraft, a train, a bus or a ship.

Furthermore, the seat may also be part of a paraglider seat structure.

The seat is therefore suitable in principle for any use in which one or more persons are to be taken up pregnant.

The additional structure may, for example, have a so-called Class A surface. Subsequent double-sided cladding of the additional structure is then preferably dispensable.

In particular, the additional structure can form a visible rear side of the backrest of the seat.

It can be provided that the end regions of one or more tubular supports adjoin a seat surface region of the seat.

In particular, the mold member is, for example, hingedly connected to a seat bottom portion of the seat at two or more end portions of one or more tubular supports.

By one or more of the one or more tubular support and / or by the additional structure, one or more receiving devices for attachment of a headrest, an airbag and / or a belt seat are preferably formed.

Furthermore, it can be provided that the additional structure comprises a plate-shaped element which forms a backrest portion, in particular a lumbar support seat, of the seat or constitutes a fastening device for a backrest portion or a lumbar support.

The present invention further relates to a method for producing a molded component.

The invention is in this respect the task of providing a method by which a low-cost mold component is easy to produce.

• Bereitstellen eines oder mehrerer rohrförmiger Träger;
• Umformen des einen oder der mehreren rohrförmigen Träger;
• Anspritzen einer Zusatzstruktur an den einen oder die mehreren rohrförmigen Träger.

This object is achieved according to the invention by a method for producing a molded component, the method comprising:

• Providing one or more tubular carriers;
• Forming the one or more tubular supports;
• Injection of an additional structure to the one or more tubular support.

The method according to the invention preferably has one or more of the features and / or advantages explained in connection with the described mold components and / or seats.

The one or more tubular supports are preferably formed by bending and / or hydroforming.

In particular, the injection molding of the additional structure takes place while an internal pressure for hydroforming is maintained. An undesired collapse of the one or more tubular carriers due to the injection molding process is thereby preferably avoided.

It may be favorable if one or more tubular supports are brought into a U-shape, in particular by bending. In this U-shape, the one or more tubular supports are preferably introduced into a device for carrying out the hydroforming process.

One or more tubular supports are preferably reshaped by hydroforming, wherein two opposite end portions of the one or more tubular supports are preferably aligned substantially parallel to each other and / or open towards a common side. A pressure tool for hydroforming is preferably connected or connectable to two connection points, which are arranged on a common side of the one or more tubular supports.

It may be favorable if two or more end regions of one or more tubular carriers are connected to one another by producing an additional structure. In particular, a cross member is formed for the preferably force-transmitting and / or stabilizing connection of the end regions.

Further preferred features and / or advantages of the invention are the subject of the following description and the drawings of an embodiment.

• 1 eine schematische perspektivische Darstellung einer Ausführungsform eines Formbauteils, welches eine tragende Struktur für eine Rückenlehne eines Sitzes bildet;
• 2 eine weitere schematische perspektivische Darstellung des Formbauteils aus 1, mit Blick auf eine Unterseite des Formbauteils;
• 3 eine schematische Draufsicht auf eine Vorderseite des Formbauteils aus 1;
• 4 eine schematische Seitenansicht des Formbauteils aus 1;
• 5 eine schematische Draufsicht auf einer Oberseite des Formbauteils aus 1;
• 6 eine schematische Explosionsdarstellung des Formbauteils aus 1; und
• 7 eine der 3 entsprechende Draufsicht auf eine Vorderseite einer alternativen Ausführungsform eines Formbauteils, wobei ein plattenförmiges Element mittels in die Zusatzstruktur integrierter Federelemente an dem rohrförmigen Träger festgelegt ist.

In the drawings show:

• 1 a schematic perspective view of an embodiment of a molded component, which forms a supporting structure for a backrest of a seat;
• 2 a further schematic perspective view of the mold component 1 facing a bottom of the mold component;
• 3 a schematic plan view of a front side of the mold component from 1 ;
• 4 a schematic side view of the molded part 1 ;
• 5 a schematic plan view of an upper side of the molded component 1 ;
• 6 a schematic exploded view of the molded part 1 ; and
• 7 one of the 3 corresponding plan view of a front side of an alternative embodiment of a mold component, wherein a plate-shaped element is fixed by means of integrated into the additional structure spring elements on the tubular support.

Identical or functionally equivalent elements are provided with the same reference numerals in all figures.

One in the 1 to 6 illustrated embodiment of a whole with 100 designated mold component finds example as part of a supporting structure 102 in a seat 104 Application. The seat 104 is in particular a vehicle seat 106 which is used for example in passenger cars as a driver's seat or passenger seat.

The mold component 100 forms in particular a supporting structure 102 a backrest 108 of the seat 104 ,

The mold component 100 comprises a tubular support 110 , which is formed for example substantially U-shaped and its end portions 112 in the assembled state of the seat 104 to a seating area (not shown) of the seat 104 adjoin.

The end areas 112 are thus in particular with respect to a direction of gravity G lower ends of the carrier 110 ,

The carrier 110 is in particular a metal tube which has been brought by forming in the U-shape. In particular, bending processes and / or hydroforming processes can be considered as forming processes.

At the end areas 112 of the tubular support 110 is in particular a pivoting device 114 arranged, by means of which the entire backrest 108 of the seat 104 is held pivotably relative to the (not shown) seat.

The mold component 100 also includes an additional structure 116 , which on the tubular support 110 is fixed.

The additional structure 116 is or includes in particular a structure of a plastic material, which by injection molding on the carrier 110 was determined.

The additional structure 116 includes in particular several fixing sections 118 which the tubular support 110 encompass, in particular annularly completely surrounded, and thus form-fitting manner on the carrier 110 are fixed. Furthermore, the additional structure includes 116 a plate-shaped element 120 which is in particular part of a supporting device 122 to support a person's back, which is on the seat 104 Took a seat.

The plate-shaped element 120 includes in particular a plurality of resilient sections 124 for increasing the seating comfort and / or one or more receiving device 126 for receiving additional components 128 , for example, a lumbar support 130 (see in particular 3 ).

The plate-shaped element 120 is preferably resilient on the carrier 110 established. For this purpose, in particular, a spring device 132 intended. The spring device 132 For example, as a separate device for connecting the plate-shaped element 120 with the fixing sections 118 the additional structure 116 be educated.

However, it can also be provided that the plate-shaped element 120 integral with the fixing sections 118 is formed and the spring device 132 for example, by a meandering or undulating structure of one between the fixing portions 118 and the plate-shaped element 120 formed area of the additional structure 116 is formed.

Furthermore, the additional structure includes 116 a crossbeam 134 which the end areas 112 of the tubular support 110 connects with each other.

The crossbeam 134 serves in particular a stable positioning of the two end regions 112 relative to each other. In particular, the end regions 112 by means of the cross member 134 fixed in that position relative to each other, in which this after a hydroforming process for shaping the carrier 110 are located.

The crossbeam 134 extends in particular starting from one of the end regions 112 to the other of the two end regions 112 , In particular, both end regions 112 by means of one or more fixing sections 118 the additional structure 116 surrounded form-fitting, so that the cross member 134 the two end areas 112 especially on train and on pressure resiliently positioned relative to each other.

By means of the cross member 134 It is preferably avoided that the bent in the U-shape tubular support 110 Rebounds again over time.

It may be advantageous if the tubular support 110 one or more flattened areas 136 includes. By one or more flattened areas 136 In particular, an optimized connection of other components of the seat 104 to the mold component 100 be enabled. For example, the end regions 112 as flattened areas 136 be formed to the pivoting device 114 easier and more stable to set.

Further, for example, with respect to the direction of gravity G upper portion of the tubular support 110 be flattened in order to mount a (still to be described) headrest mount simpler and / or more stable.

In particular 2 it can be seen, are the two end portions 112 of the carrier 110 to a common side, namely with respect to the direction of gravity G downwards, open.

For a hydroforming process, this results in an inlet opening 138 and an outlet opening 140 for the fluid used for forming, wherein the inlet opening 138 and the exit opening 140 to a common side, namely with respect to the direction of gravity G in the assembled state of the seat 104 down, open.

In particular, for mounting the pivoting device 114 as well as for additional components 128 will then be required holes 142 preferably only after carrying out the hydroforming process in the tubular support 110 brought in.

The described combination of tubular support 110 and additional structure 116 already allows the simple and cost-effective production of a molded component 100 ,

To further optimize additional features in the carrier 110 and / or the additional structure 116 to get integrated.

For example, one or more additional components 128 of the seat 104 , which previously had to be mounted separately consuming, then particularly easy to be mounted if this one or more recording devices 126 already in the additional structure 116 and / or the wearer 110 are provided.

In particular, a recording device 126 for a headrest 144 , a cradle 126 for a belt intake 146 and / or a receiving device 126 for an airbag 148 intended.

The recording devices 126 can be designed very differently.

For example, for receiving the headrest 144 can be provided that the additional structure 116 together with the tubular support 110 two attachment points 150 for receiving the headrest 144 forms. The attachment points 150 include in particular in the additional structure 116 molded and / or by the additional structure 116 formed receiving and / or latching sections and one or more holes 142 in the tubular carrier 110 formed guide sections. For example, by additional inserts, jacks or the like, if necessary, an assembly and / or determination of the headrest 144 on the mold component 100 be optimized.

As another option for defining an additional component 128 on the mold component 100 can be provided that the mold component 100 a housing section 152 a housing 154 for inclusion of an additional component 128 forms.

In particular, the additional structure 116 preferably designed so that it has a housing portion 152 forms, at which one or more additional housing sections 152 are fixable to the housing 154 for receiving the additional components 128 finish.

As 3 can be seen, for example, a belt 146 in a housing 154 be integrated. Further, for example, an airbag 148 in a housing 154 be integrated.

In further (not shown) embodiments of molded parts 100 can extra carrier 110 , in particular tubular carrier 110 be provided, which in particular by means of the additional structure 116 connected to each other.

Furthermore, inserts in the manufacture of the additional structure 116 used, for example, the plate-shaped element 120 To be able to produce particularly stable by fiber reinforcement.

Finally, it may also be provided that the additional structure 116 at the same time a visible surface of the fully assembled seat 104 forms around at least part of the lining of the seat 104 , Especially in the area of a back of the backrest 108 very easy to deploy.

An in 7 illustrated alternative embodiment of a molded component 100 is different from the one in the 1 to 6 illustrated embodiment essentially in that the additional structure 116 wavy or meandering sections 156 comprising which the plate-shaped element 120 resilient with the fixing sections 118 and thus with the tubular support 110 connect.

The undulating or meandering sections 156 are especially in the injection molding process together with the fixing sections 118 and / or the cross member 134 and / or the plate-shaped element 120 manufactured as a component and on the tubular support 110 established. As a result, additional components can be avoided and the manufacturing process of the molded component 100 be optimized.

Incidentally, the in 7 illustrated embodiment of the molded component 100 in terms of structure and function with in the 1 to 6 illustrated embodiment, so that reference is made to the above description in this respect.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 2479060 A1 [0003]

Claims (23)

Shaped component (100), comprising: - one or more tubular supports (110); - An additional structure (116) which is injection-molded by plastic injection to the one or more tubular support (110), characterized in that the additional structure (116) connects two end portions (112) of the one or more tubular support (110) , Molded part (100) according to Claim 1 , characterized in that the additional structure (116) forms a cross member (134), by means of which the two end regions (112) of the one or more tubular supports (110) are connected to one another in a force-transmitting and / or stabilizing manner. Molded part (100) according to one of Claims 1 or 2 , characterized in that the mold component (100) comprises two or more than two tubular support (110), which are interconnected by means of one or more by the additional structure (116) formed cross member (134). Molded part (100) according to one of Claims 1 to 3 characterized in that one or more of the one or more tubular supports (110) are formed of a metal material and shaped, in particular, in a hydroforming process. Molded part (100) according to one of Claims 1 to 4 , characterized in that one or more of the one or more tubular support (110) with the additional structure (116) are encapsulated, wherein in particular a plurality of the tubular support (110) annularly surrounding fixing portions of the additional structure (116) are formed. Molded part (100) according to one of Claims 1 to 5 , characterized in that the additional structure (116) comprises or is formed from a thermoplastic material and / or a thermosetting material. Molded part (100) according to one of Claims 1 to 6 characterized in that one or more of the one or more tubular supports (110) comprise at least one flattened region (136) in which the auxiliary structure (116) engages the one or more tubular supports (110). Molded part (100) according to one of Claims 1 to 7 , characterized in that by one or more of the one or more tubular support (110) and / or by the additional structure (116) one or more receiving devices (126) for receiving additional components (128) are formed. Molded part (100) according to Claim 8 characterized in that one or more receiving devices (126) are provided by at least one bore (142) and / or at least one recess and / or at least one attachment site (150) on or in the one or more tubular supports (110) and / or the additional structure (116) are formed. Molded part (100) according to one of Claims 8 or 9 , characterized in that by at least one housing portion (152) of a housing (154) of an additional component (128) is formed by one or more of the one or more tubular support (110) and / or by the additional structure (116). Molded part (100) according to one of Claims 1 to 10 or after the generic term of Claim 1 , characterized in that one or more of the one or more tubular supports (110) have a U-shape. Molded part (100) according to Claim 11 , characterized in that the one or more tubular supports (110) surround an interior, which is partially filled by the additional structure (116). Molded part (100) according to one of Claims 1 to 12 , characterized in that the additional structure (116) comprises at least one plate-shaped element (120) which extends at least approximately parallel to a main extension plane of the one or more tubular supports (110). Molded part (100) according to one of Claims 1 to 13 , characterized in that the additional structure (116) is at least partially or partially elastically yielding and / or resiliently fixed to the one or more tubular supports (110). Seat (104), in particular vehicle seat (106), comprising a molding component (100) according to one of Claims 1 to 14 wherein the mold member (100) forms a supporting structure (102) for a backrest (108) and / or a seat surface of the seat (104). Seat (104) to Claim 15 characterized in that the end regions (112) of one or more tubular supports (110) abut a seating surface region of the seat (104). Seat (104) after one of Claims 15 or 16 characterized in that one or more receiving means (126) for attaching a headrest (144), an airbag (148) and / or through the auxiliary structure (116) is provided by one or more of the one or more tubular supports (110) and / or or a Gurtaufnahme (146) are formed. Seat (104) after one of Claims 15 to 17 , characterized in that a plate-shaped element (120) of the additional structure (116) forms a backrest portion, in particular a lumbar support seat, of the seat (104). A method of making a molded component (100), comprising: - providing one or more tubular supports (110); - forming the one or more tubular supports (110); - Injection of an additional structure (116) to the one or more tubular support (110). Method according to Claim 19 , characterized in that the one or more tubular supports (110) are formed by bending and / or hydroforming. Method according to Claim 20 , characterized in that one or more tubular supports are brought into a U-shape, in particular by bending. Method according to Claim 21 characterized in that one or more tubular supports are reshaped by hydroforming, wherein two opposite end portions of the one or more tubular supports are aligned substantially parallel to each other and / or open towards a common side, wherein a pressure tool for hydroforming two connection points, which are arranged on a common side of the one or more tubular support is connected. Method according to one of Claims 19 to 22 , characterized in that two or more end portions of one or more tubular support are joined together by producing an additional structure, wherein in particular a cross member is formed for force-transmitting and / or stabilizing connection of the end portions.

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