WO2010108681A2

WO2010108681A2 - Seat frame device

Info

Publication number: WO2010108681A2
Application number: PCT/EP2010/001879
Authority: WO
Inventors: Alfons Stachel
Original assignee: Recaro Aircraft Seating Gmbh & Co. Kg
Priority date: 2009-03-27
Filing date: 2010-03-25
Publication date: 2010-09-30
Also published as: EP2411277A2; WO2010108681A3; DE102009014752A1

Abstract

The invention relates to a seat frame device, in particular a seat frame device for transport means, comprising at least one frame part (18-28) which is made of an aluminum-lithium compound.

Description

Sitzqestellvorrichtung

State of the art

There are already known seat frame devices for aircraft seats, which have connected via screw frame parts.

Advantages of the invention

It is proposed a seat frame device, in particular a transport means seat frame device, with at least one frame part, which is at least partially formed of an aluminum-lithium compound. A "transport means seat frame device" is to be understood in particular as a device which is intended to be used in a means of transport, such as in a vehicle, a ship and / or particularly advantageously in an aircraft a frame which is intended to transmit weight forces of a person sitting on a seat frame device comprising the seat and / or transport-related acceleration forces acting on the person to a floor of a means of transport, in particular to a floor of an aircraft ,

In particular, weight can be saved by means of a corresponding configuration, which is particularly advantageous, in particular, for an aircraft seat frame device. The aluminum-lithium compound has advantageous strength properties, wherein nevertheless welded and / or soldered joints are formed with a material formed by this material. make the component particularly easy and efficient and in particular to produce a particularly low weight.

In a preferred embodiment of the invention it is proposed that the at least one frame part at least partially forms a cross member. A "cross member" is to be understood in particular an element which is intended, in a mounted state transversely to a seat direction, ie transverse to a person sitting in a seat sitting on the seat frame device upright sitting person, in an untwisted head position, several seat legs and / or seat dividers, in particular of a plurality of seats arranged next to one another, and to which a plurality of seat legs are connected.

A further weight saving can be achieved if the at least one positioning part is at least a part of a seat divider and / or a seat leg. Serve

Seat legs, in particular for transmitting forces to a floor, in particular on an aircraft floor, and seat dividers, in particular for supporting a backrest.

The "part" of a seat divider or of a seat leg may correspond to a partial area of a main body forming the seat divider or the seat leg, in which case the main body preferably corresponds to a carrier part, in particular a main carrier part of the seat divider or seat leg a welded and / or soldered joint, with a further frame part, in particular a cross member, manufactured, in this case, the main body is directly connected to the other frame part, which can be dispensed with the use of a separate fastening part for the seat divider or the seat leg.

The "part" of a seat divider or a seat leg may alternatively correspond to a fastening part connected to the main body, wherein a connection, particularly advantageously a welded and / or soldered connection of the fastening part with a further frame part, in particular a cross member, can be produced. In particular, the material of the fastening part for the purpose of producing a connection, in particular a welded and / or soldered connection, with a further frame part to the material be adapted to this frame part, wherein the material of the body of the seat divider or the seat leg can be selected independently of the execution of the other frame part, in particular a cross member element. Thus, for example, a cross member and a fixing part of a seat divider or a seat leg may be formed of an aluminum-lithium compound, while the main body of the seat divider or the seat leg of another material, such as a carbon fiber reinforced plastic (CFRP) may exist.

Furthermore, a seat frame device, in particular a Transportmittelsitzgestellvor- direction, proposed with at least two connected via at least one welding and / or solder joint frame parts. By an appropriate design components, assembly costs, costs and in particular weight can be saved, which is particularly advantageous for an aircraft seat frame device. Furthermore, by means of welding or soldering, an advantageous automation of a production process of a seat frame device can be achieved. In particular, the welded connection can be produced by means of laser welding or welding carried out by means of friction forces.

Particularly advantageously, the welding and / or soldering connection constitutes a main connection intended, i. specifically designed to contain at least a substantial part, i. preferably at least 10%, preferably at least 30% and particularly preferably at least 50% of at least one occurring during operation weight and / or acceleration force acting in a direction of the frame parts, which without the weld and / or solder joint to a relative movement of the would cause alternate parts to each other.

In a preferred embodiment, it is proposed that at least one of the frame parts is at least part of a seat divider and / or seat leg, the part having at least one welding and / or soldering surface. The "part" of a seat divider or a seat leg can correspond to a partial area of a main body forming the seat divider or the seat leg Another frame part, in particular a cross member, manufactured, here is the main body directly connected to the other frame part. the, which can be dispensed with the use of a separate attachment part for the seat divider or the seat leg. The "part" of a seat divider or a seat leg may alternatively correspond to a fastening part connected to the main body, wherein the welding or soldering connection of the fastening part can be produced with a further frame part, in particular a cross member.

Preferably, at least one of the frame parts at least partially forms a cross member element which has at least one welding and / or soldering surface of the welded and / or soldered connection. By appropriate design, in particular a large weight saving potential can be developed. The cross member may be formed by various, the expert appears useful components, but particularly advantageous at least partially by a hollow profile, whereby a particularly lightweight and stable device can be achieved particularly simple in construction. In this case, the hollow profile can have various cross-sectional shapes that appear appropriate to the person skilled in the art, such as, for example, angular, oval and / or particularly advantageously round.

The cross member may also be advantageously formed by a single beam. A "single beam" is to be understood in this context in particular as a component that is intended solely to connect seat legs and / or seat dividers in the transverse direction or transversely to the seat direction, and in particular is intended to receive torques, so that in seat direction Weight and, in particular, installation space can again be saved by means of a corresponding design, In particular, it is also advantageous to weld or solder parts of the single beam together and / or to weld the single beam with adjacent components or to be soldered.

In a further embodiment of the invention it is proposed that at least one of the frame parts has a cup-shaped welding and / or soldering surface. In this case, a "bowl-shaped surface" is to be understood as meaning in particular a concave, preferably curved surface, By means of a corresponding configuration, an advantageously large welding and / or soldering surface and an advantageous introduction of force can be achieved. Preferably, the welding and / or soldering connection has a welding and / or soldering surface, which is wider than at least one support part of the seat divider and / or the seat leg. In this case, "width" should be understood to mean, in particular, an extension transverse to the seat direction, in particular parallel to a front edge of the seat the carrier part, in particular a main carrier part of the seat divider and / or the seat leg, is transmitted via the at least one main load.

Furthermore, weight can be saved and, in particular, an advantageous welding and / or solder connection can be achieved if at least one of the frame parts is formed at least partially from an aluminum-lithium compound.

If the seat frame device has at least one pin connection which is provided to secure the welding and / or solder connection, it is advantageously possible to prevent it from slipping during a welding and / or soldering process and / or at least individual welding and / or soldering areas can be advantageous in addition to a material connection are held together positively and / or non-positively. A "pin connection" should be understood to mean all connections in which a pin-shaped component, such as a screw, a rivet, etc., is used for fastening and in particular at least partially penetrates at least one of the components to be connected and preferably both components to be connected.

If the seat frame device has at least one pin connection with at least one pin, which is held in its connection position by means of a material connection, an advantageous connection with low weight can be realized. In this case, the material connection can be produced by means of an adhesive bond and / or by means of a welding process.

In a further embodiment it is proposed that the pin is held alternatively or additionally by means of a positive connection in its connecting position. For example, a clip connection can be applied, which extends in particular over the entire pin connection. As a result, a lesser installation effort in securing the pin connection can be achieved. It is also proposed that the frame parts are connected via a connection which is at least partially formed by a pin connection with at least one pin, which is secured by means of a securing connection in its connecting position. In this case, a "securing connection" is to be understood in particular as meaning a connection which is intended exclusively to hold the pin in its connecting position and to absorb forces of not more than 100 N and preferably not more than 50 N in the longitudinal direction of the pin, and / or it is to be understood in particular by a "pin connection, which is formed with at least one pin which is secured by means of a securing connection in its connection position", a pin connection, which is made by means of at least one head-free pin. In this context, "head-free" should be understood in particular to mean that the pin has no head at any end, ie a region at one end of a pin which, starting from a longitudinal center axis, has a larger transverse extent in relation to a cross-section of an adjoining region in each transverse axis and viewed in the longitudinal direction of a central region, viewed in the direction of the head, in the region of the head has a shoulder which has an angle of less than 130 ° and preferably less than 135 °, and in particular is free of a screw and / or rivet head Again, weight can be saved by means of a corresponding embodiment The pin connection particularly advantageously represents a main connection which is provided, ie especially specially designed, for at least a substantial part, ie preferably at least 10%, preferably at least 30% and particularly preferably at least 50% of at least one G occurring during operation imbalance and / or acceleration force to take, which acts in a direction of the frame parts, which would lead to a relative movement of the frame parts to each other without the pin connection.

In an advantageous embodiment, it is proposed that the securing connection for securing the pin connection is produced by means of a positive connection. For example, a clip connection can be applied, which extends in particular over the entire pin connection. As a result, a lesser installation effort in securing the pin connection can be achieved.

In a further embodiment of the invention, it is proposed that the securing connection is produced by means of a forming process, whereby it is structurally simple and inexpensive to implement. If the securing connection is produced by means of a forming process of the pin, an advantageous dismantling can be ensured.

Furthermore, it is proposed that at least one of the frame parts is directly connected to a first setting part via at least one welding and / or soldering connection and is directly connected to at least one second frame part via a second connection which at least partially comprises a pin connection with at least one Pin is formed, which is secured by means of a fuse link in its connection position, whereby an advantageous connection can be realized.

drawing

Further advantages emerge from the following description of the drawing. In the drawing, embodiments of the invention are shown. The description and claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

Show it:

1 is a seat frame device obliquely from above,

2 shows a first enlarged detail of the seat frame device

1, 3 shows a second enlarged detail of the seat frame device of Figure 1,

4 shows an enlarged detail of a pin connection of the seat frame device from FIG. 1,

Fig. 5 is an enlarged section of an alternative pin connection, Fig. 6 for illustration, a pin with a head in the longitudinal direction of the pin and

Fig. 7 shows the pin of Figure 6 in a side view. Description of the embodiments

Figure 1 shows a seat frame device obliquely from above, namely an aircraft seat frame device. The seat frame device comprises via welded and / or soldered connections 10 - 16 connected frame parts 18 - 28, wherein the frame parts 18, 22, 24, 28 each have a welding and / or soldering surface having part of a seat divider 30 and a seat leg 32 , The frame parts 18-28 are formed from an aluminum-lithium compound.

The seat frame device is provided for three seats and comprises two seat legs 32 and four seat dividers 30 and two frame members 20, 26 each forming a cross member element, which have welding and / or soldering surfaces of the welded and / or soldered joints 10 - 16 (FIGS. 2 and 3) ). The seat dividers 30 are each fastened with a welded and / or soldered connection 10 on the frame part 20 forming a transverse support element and in each case with a welding and / or soldered connection 14 on the frame part 26 forming a transverse support element. The seat dividers 30 are supported on the cross member elements. The cross member elements are formed by hollow profiles, namely pipes with round cross-sectional areas and parallel to a schematically indicated seat leading edge 66 of the three seats. The rear cross member element facing away from the seat leading edge 66 or the frame part 20 is in each case connected to the seat legs 32 via a welded and / or soldered connection 32 and the front cross member element facing the seat front edge 66 or the frame part 26 is likewise respectively connected via a welding element. and / or solder 16 connected to the seat legs 32. The cross member elements or the frame parts 20, 26 are supported on the seat legs 32. The welding and / or soldering connection 16 is secured by means of a pin connection 34, specifically in order to achieve an advantageous positioning of the components to be connected to one another during a welding and / or soldering operation and to prevent detachment in the edge region. The remaining welds and / or solder joints 10 - 14 could also be provided with a corresponding pin connection.

The frame parts 18, 24 are made of fastening parts of the seat divider 30 and the frame parts 22, 28 are formed by fastening parts of the seat legs 32. The frame parts 18, 22, 24, 28 each have concave, cup-shaped welding and / or soldering surfaces, which have a radius corresponding to an outer radius of the cross member elements, so that the welding and / or soldering surfaces can advantageously be coupled over the whole area to the cross-member elements. The concave, cup-shaped welding and / or soldering surfaces of the fastening parts are wider than main carrier parts forming frame parts 62 of the seat divider 30 and main carrier parts forming frame parts 64 of the seat legs 32. In particular, the welding and / or soldering surfaces of the mounting parts of the seat legs 32 forming frame parts 28 are more as twice as wide as the main carrier part of the seat leg 32.

The frame parts 18, 24 of the seat dividers 30 formed by fastening parts each have a U-shaped receiving area, in which the frame parts 62 of the seat dividers 30 are inserted and fastened by means of pin connections 40, 46. The frame parts 22, 28 of the seat legs 32 formed by fastening parts likewise each have a U-shaped receiving area into which the frame parts 64 of the seat legs 32 are inserted and fastened by means of connections 42, 44, 48 formed by pin connections. The links 40-48 each have a headless pin 52-60 which is secured by a fuse link in its connecting position. The securing connections are in each case produced by means of a forming process of the pin 52-60 (FIG. 4), specifically the pins 52-60 are embossed at their ends into partial areas 68 so that they are in the partial areas 68 in the radial direction via an edge of a recess the frame parts 18, 22, 24, 28 protrude, through which the pins 52 - 60 were pushed to produce the compounds 40 - 48 prior to stamping.

To illustrate an elaborate definition of the term "head-free", in Figures 6 and 7, a pin 70 is shown having a head 72, that is, a portion at one end of the pin 70 extending from a longitudinal center axis 74, opposite one

Cross-section of an adjoining region 80 in each transverse axis has a greater transverse extent 76 and in the longitudinal direction of a central region, viewed in the direction of the head 72, in the region of the head 72 has a paragraph or the head 72 forms a shoulder which forms an angle smaller than 130 °, and preferably smaller than 135 °, for example, an angle 78 shown in FIG. 7 of approximately 90 °.

Alternatively and / or additionally also pin connections 36 could be provided, which have at least one pin 38, which in its connection position by means of a Materialschlusses 82 is held, as shown in a compound formed by a pin connection 50 in Figure 5. The fabric bond 82 is made by means of splices. A used adhesive 84 is arranged on an end face 86 of the pin 38.

24.03.10

reference numeral

10 Welding and / or soldering 56 pin

12 Welding and / or soldering 58 pin

14 welding and / or soldering 60 pin

16 Welding and / or soldering connection 62 Frame part

18 frame part 64 frame part

20 Frame part 66 Seat leading edge

22 frame part 68 partial area

24 frame part 70 pin

26 frame part 72 head

28 frame part 74 longitudinal central axis

30 seat divider 76 transverse extension

32 seat leg 78 angle

34 pin connection 80 area

36 pin connection 82 fabric connection

38 pin 84 adhesive

40 connection 86 front side

42 connection

44 connection

46 connection

48 connection

50 connection

52 pen

54 pen

Claims

24.03.10 Claims 5

1. Seat frame device, in particular transport means seat frame device, with at least one frame part (18 - 28), which is at least partially formed of an aluminum-lithium compound.

L O

2. Seat frame device according to claim 1, characterized in that the at least one frame part (20, 26) at least partially forms a cross member. L5

3. Seat frame device according to claim 1 or 2, characterized in that the at least one frame part (18, 22, 24, 28) is at least part of a seat divider (30) and / or a seat leg (32). 20

4. Seat frame device, in particular transport means seat frame device, with at least two frame parts (18-28) connected via at least one welded and / or soldered connection (10-16).

25 5. Seat frame device according to claim 4, characterized in that at least one of the frame parts (18, 22, 24, 28) at least part of a seat divider (30) and / or seat leg (32), wherein the part at least one welding and / or soldering surface has.

6. Seat frame device according to claim 4 or 5, characterized in that at least one of the frame parts (20, 26) at least partially forms a cross member having at least one welding and / or soldering surface of the welding and / or solder joint (10-16) ,

7. Seat frame device according to one of claims 4 to 6, characterized in that at least one of the frame parts (18, 22, 24, 28) has a cup-shaped welding and / or soldering surface.

8. Seat frame device according to one of claims 4 to 7, characterized in that the welding and / or soldering connection (10-16) has a welding and / or soldering surface, which is wider than at least one support part of the seat divider (30). and / or the ischial bone (32).

9. sitting gesture 11 Device according to one of claims 4 to 8, characterized in that at least one of the frame parts (18 - 28) at least partially from a

Aluminum-lithium compound is formed.

10. Seat frame device according to one of claims 4 to 9, characterized in that the frame parts (18, 22, 24, 28) via a connection (40 - 50) are connected, at least partially by a pin connection with at least one pin (38, 52-60) is formed, which is secured by means of a securing connection in its connecting position.

11. Seat frame device according to claim 10, characterized in that the pin (38, 52 - 60) is formed free of head.

12. Seat frame device according to claim 10 or 1 1, characterized in that the securing connection is produced by means of a forming process.

13. Seat frame device according to claim 12, characterized in that the securing connection by means of a forming process of the pin (52 - 60) is made.

14. Seat frame device according to at least one of claims 4 to 13, characterized in that at least one of the frame parts (18, 24) with a first frame part (20, 26) via at least one welded and / or soldered connection (10, 14) directly connected is and with at least a second frame part (62, 64) via a second connection düng (40, 46) connected to at least partially by a pin connection with at least one pin (52, 58) formed by means of a securing connection in its connection position is secured.

15. A method for producing a seat frame device, in particular according to one of the preceding claims, characterized in that at least one frame part (18, 22, 24, 28) at a further frame part (20, 26) welded and / or soldered.