WO2022112617A1

WO2022112617A1 - Seat belt bracket for a recreational vehicle, and recreational vehicle

Info

Publication number: WO2022112617A1
Application number: PCT/EP2021/083665
Authority: WO
Inventors: Andreas Fiedler; Hannes HÖRMANN; Bernhard Sawetzki
Original assignee: HYMER GmbH & Co. KG
Priority date: 2020-11-30
Filing date: 2021-11-30
Publication date: 2022-06-02
Also published as: EP4251468A1; DE102021131491A1

Abstract

The invention relates to a seat belt bracket (100) for arrangement in the interior of a recreational vehicle for a seat arrangement with at least two seats. The seat belt bracket (100) is characterized in that a base body (110) of the seat belt bracket (100) is made from plastic and/or a composite material. The invention further relates to a recreational vehicle comprising such a seat belt bracket (100).

Description

description

Gurtbock for a leisure vehicle and leisure vehicle

The invention relates to a seat belt bracket for a leisure vehicle and to a leisure vehicle with such a seat belt bracket.

Belt blocks or restraint systems for bench seats are known in the prior art. A function of a Gurtbocks is to connect a seat to a chassis of the recreational vehicle in a reversible, detachable manner and to provide at least one belt for the seat. In series production, such belt brackets or restraint systems are currently only manufactured as welded steel constructions. In the vehicle class N1, the weight of such belt blocks or restraint systems is around 20 kg. Prior art belt brackets have welded steel construction with square profiles and flat straps.

Belt blocks are generally intended for retrofitting in the motor home. An existing bench can be reused. The 3-point belts are concealed in the belt bracket column. For example, a motorhome bench seat is suitable for attaching child seats. The construction is self-supporting, i.e. the storage space under the bench is retained.

Recreational vehicles are known in the prior art. A recreational vehicle is understood to mean a vehicle or trailer which has at least one mobile element for camping or which can at least temporarily have a camping facility. A recreational vehicle is understood to mean, in particular, a camping vehicle. A recreational vehicle is understood to mean a motorized recreational vehicle. In the present case, a camping vehicle is understood to mean a mobile home or caravan, ie preferably those vehicles or trailers in which a user has the option of sleeping or living in this vehicle. Motorization of the vehicles is not required. Another name for a mobile home is, for example, a motorhome. A caravan, for example, can alternatively be referred to as a caravan or camping trailer. Under a campervan is presently a Recreational vehicle, especially recreational vehicle, understood, which is formed from a transport vehicle with a standard body, especially a sheet metal body.

An object of the present invention is to improve the state of the art. One object of the present invention is, in particular, to provide a seat belt bracket for a leisure vehicle which is easier, cheaper, more variable and resource-saving to produce than a seat belt bracket of the prior art.

This problem is solved by a seat belt bracket for arrangement inside a recreational vehicle. Advantageous developments of the invention are specified in the dependent claims.

The Gurtbock is intended for a seating arrangement with at least two seats. A main body of Gurtbocks is made of plastic. The main body of the seat belt bracket is preferably made of plastic and/or a composite material. Alternatively, the main body of the seat belt bracket is made of plastic or a plastic mix.

The following terms are explained:

In the present case, the basic body of the seat belt bracket is understood to mean a structure which is provided for absorbing the forces which occur between the seat belt bracket and the chassis of the leisure vehicle when the leisure vehicle is braked.

The Gurtbock according to the invention advantageously saves costs and weight. Another advantage of the Gurtbocks invention is the flexibility through interchangeable inserts in the tool. The seat belt bracket according to the invention can advantageously be adapted quickly and easily to different geometries inside a recreational vehicle. Due to the fact that the material of the seat belt bracket has plastic and/or a composite material, the rigidity of the base body can be adjusted, in particular by attaching a tension strap and/or flexible material or wall thicknesses.

The invention also enables a topology-optimized design, which means that resources can be saved.

The base body is preferably a fiber composite component. The composite material is preferably a fiber-plastic composite. A fiber composite component is understood to mean a component whose material has a fiber composite or consists of such. Alternatively, a fiber composite can also be called a fiber-plastic composite (FRP), fiber-reinforced plastic or fiber-reinforced plastic (FRP). A fiber composite is understood as meaning a material which has reinforcing fibers and a plastic matrix. The matrix surrounds the fibers, which are bound to the matrix by adhesive or cohesive forces. Due to the use of fiber materials, a fiber composite generally has a direction-dependent law of elasticity.

Without a matrix material, the high specific strength and rigidity of the reinforcing fibers cannot be used. A new construction material is only created through the appropriate combination of fiber and matrix material.

A fiber composite usually has a high specific stiffness and strength. This makes it a suitable material in lightweight construction applications. Flat structures are mainly produced from fiber composites.

The mechanical and thermal properties of fiber composites can be adjusted using a large number of parameters. In addition to the fiber-matrix combination, e.g. the fiber angle, the fiber volume fraction, the layer sequence, etc. can be varied.

Fibre-plastic composites belong to the class of fiber-reinforced materials, which are a member of the composite materials class. A fiber-reinforced plastic composite can be understood as a construction. Its elements must be combined in such a way that the desired properties are achieved. A new material is created through the interaction of the specific properties of fiber material and matrix material.

The fibers conduct the forces. Due to their high rigidity compared to the matrix, they draw the load on themselves. Because the fiber has a higher stiffness than the matrix, the load is directed along the fibers. Across the grain, matrix and fiber often have similar moduli of elasticity. In addition, the forces must be conducted through adhesive forces across the fiber-matrix interface. Therefore, there is usually no reinforcing effect across the fiber. The reason for this is also the increase in strain.

The matrix embeds the fibers. "Bedding" means that it spatially fixes the fibers and enables the load to be introduced and dissipated. In addition, the matrix supports the fibers, e.g. against buckling under pressure parallel to the fibers. Load transfer occurs via adhesion between fiber and matrix. It can take place via normal or shear forces. Composites in which there is no fiber-matrix flattening can only be loaded in special cases. The matrix also has the task of protecting the fibers against environmental influences.

According to a preferred embodiment, the main body of the Gurtbocks is made in one piece. Flowing is advantageously achieved that the base body has a significantly increased stability.

According to a further preferred embodiment, the main body of the seat belt bracket is made in a plastic shell construction. Fastening is advantageously achieved in that the main body of the belt bracket has a low weight, can be produced cheaply due to the resource-saving fastening method and nevertheless has a high level of stability.

According to another embodiment, the main body of the seat belt bracket has stiffening ribs. The stability of the base body is further increased by this. According to yet another embodiment, the main body of the belt bracket is produced using impact extrusion or injection molding. These are standard procedures, which are widely used and are therefore associated with low costs.

According to yet another embodiment, the main body of the belt bracket has an endless fiber reinforcement for increasing the load, which is arranged such that at least one point of a load path of the main body, a force of the load path is absorbed by the endless fiber reinforcement.

Continuous fiber reinforcement can be carbon or glass fiber reinforcement, e.g., carbon fiber tape or glass fiber tape.

A load path is the direction in which each successive load passes through the fiber composite component. The load path is a representation of how load is transferred from one element to another. It helps identify the critical components that carry the majority of the loads so that the design can be optimized. Each structural element of the continuous fiber reinforcement or the fiber composite component must be designed for all loads that pass through it.

In particular, the force of one or more load paths can be well absorbed in the continuous fiber reinforcement or the fiber composite component by the targeted use of material on one or more load paths or by aligning the fibers along one or more load paths.

This feature advantageously means that with the same weight of the belt bracket, higher forces can be absorbed, or with a lower weight of the belt bracket, the same large forces can be absorbed.

According to another embodiment, the main body of the Gurtbocks has a cross-like structure.

Here, the cross-like structure has a column-like structure that runs vertically when used as intended, a structure that runs horizontally when used as intended, and a support element. Preferred is the columnar structure is wider at a lower end and narrower at an upper end.

The vertically extending columnar structure includes a foot member configured and configured to be attached to a floor of the recreational vehicle. The vertically extending columnar structure preferably has a beam-like or columnar structure and a substantially constant thickness.

The longitudinal axis of the structure, which runs horizontally when used as intended, runs on a flea of a seat to be fastened to the belt bracket, in particular a seat cushion.

The support element can be fastened to a floor of the recreational vehicle at a first end and is connected to the horizontally extending structure at a second end, which is opposite the first end.

In this case, a longitudinal axis of the support element encloses an angle between 20° and 70°, preferably between 40° and 50° and more preferably 45° with a longitudinal axis of the columnar structure.

When the seat belt is used as intended, a position on the floor of the recreational vehicle, to which the second end of the support element is to be attached, is offset from a position on the floor of the recreational vehicle, to which the foot element is to be attached, preferably along the direction of travel of the recreational vehicle . In this way, it is advantageously achieved that the support element supports the belt bracket when braking from the front.

If the base body is in one piece, the vertically running columnar structure and the horizontally running structure overlap. In other words, the columnar structure and the horizontal structure can be said to intersect or intersect. This means that there are places in the cross-like structure which belong to both the vertically extending columnar structure and the horizontally extending structure. The column-like structure running vertically preferably runs through the horizontally running structure in a central area, preferably in the middle.

The support element, which is preferably attached centrally to the horizontally extending structure, can also be attached on both sides or eccentrically according to other embodiments. As a result, the installation space in front of the belt bracket can be designed flexibly or a reaction can be made to disruptive geometries such as a heater.

Preferably, the base element of the vertically running columnar structure has two parallel beam-shaped structures, e.g., between which a hole is arranged. The two parallel beam-shaped structures are connected at a lower end to a plate of the base element and at an upper end to the horizontal structure. A rectangular or cuboid hole is arranged between the horizontal structure and the plate of the foot element. The support element is preferably fastened to the upper end of this hole, to the lower end of the horizontally extending structure.

The base body preferably has a horizontally running belt fastening element, which is arranged in an upper region, preferably in the upper fifth, even more preferably in the upper tenth, of the vertically running columnar structure. A belt loop through which a belt can be guided can preferably be fastened to the belt fastening element. The belt system is preferably a 3-point belt. The length of the belt attachment element is preferably as long as the horizontally extending structure.

According to another embodiment, the main body of the Gurtbocks has a flat construction.

As a result, it can advantageously be achieved that a large contact surface is created for a back cushion, so that the passenger is offered more seating comfort. In addition, due to the flat design, a construction with reduced complexity is advantageously possible due to a better distribution of the force ratios.

According to yet another embodiment, the main body of the Gurtbocks is designed and set up in such a way that it can be attached to different floor heights, floor concepts or various interfering contours within the seating area. This can be realized in a simple manner by using different tool changing inserts.

According to another embodiment, the main body of the belt bracket has at least one flat reinforcement or insert and/or at least one selective reinforcement or insert. The at least one flat reinforcement or insert and/or the at least one punctiform reinforcement or insert is designed in such a way that an Isofix mount, a seat cushion mount, at least one headrest, at least one belt deflection strap, at least one fastening eyelet for a belt buckle, at least one retractor or at least one cable bushing for seat detection can be reversibly and detachably connected to the main body of the belt block. A shape or geometry of the base body or the seat belt bracket can be designed in such a way that the above-mentioned recordings are coordinated with the geometry inside the recreational vehicle, d. H. they don't disturb each other.

This advantageously achieves punctiform reinforcements at heavily stressed areas. Another advantage is the integration of functions, e.g. by connecting upholstery, neck supports, etc.

The Gurtbock is preferably tested for vehicle class N1.

In a further aspect, the object of the invention is achieved by a recreational vehicle having the features of patent claim 10 . The benefits of the recreational vehicle include the benefits of the seat belt buck mentioned above.

Embodiments of the invention are shown in the drawings and are explained in more detail in the following description.

Figure 1 shows a schematic three-dimensional view of a Gurtbocks according to a first embodiment of the invention in a front view. Figures 2 and 3 each show a schematic three-dimensional representation of a rear and a front view of a Gurtbocks according to a second embodiment of the invention.

FIGS. 1 and 2 each show a first embodiment of the seat belt block 100 produced in one piece by extrusion or injection molding. The seat belt bracket 100 is to be arranged inside a leisure vehicle. The Gurtbock is intended for a seating arrangement with at least two seats.

The first embodiment of the belt block 100 has a base body 110 which is made of plastic in a plastic shell construction. To increase the stability, the base body 110 has stiffening ribs 112 between the plastic shells.

The main body 110 of the first embodiment of the Gurtbocks 100 has a cross-like structure 130 which has a column-like structure 132 running vertically when used as intended, a structure 135 running horizontally when used as intended, and a support element 138 .

The columnar structure 132 has a base element 133 at a lower end, which can be fastened to a floor 210 of the recreational vehicle. Furthermore, the foot element 133 has a plate-shaped element, which preferably has one or more bores, so that the plate-shaped element can be fastened, in particular screwed, to the chassis of the recreational vehicle.

A longitudinal axis 136 of the horizontally extending structure 135 is disposed on a base of a seat cushion to be attached to the seat belt bracket.

Since the base body 110 is designed in one piece, the columnar structure 132 and the horizontal structure 135 intersect at an intersection 145, which has a thickening to strengthen the base body 110.

A first end 139 of the support element 138 can be fastened to a floor 210 of the recreational vehicle and a second end 140 opposite the first end 139 is connected to the horizontally extending structure 135 . In this case, a longitudinal axis of the support element 138 encloses an angle of 45° with a longitudinal axis of the columnar structure 132 .

The support member 138 is attached to the horizontally extending structure 135 at a central portion where the columnar structure 132 traverses the horizontally extending structure 135 . Alternatively, the support element 138 can be attached to the points 147, for example also on both sides or eccentrically. As a result, the installation space in front of the belt bracket can be designed flexibly or a reaction can be made to disruptive geometries such as a heater.

When the seat belt bracket 100 is used as intended, a position on the floor 210 of the leisure vehicle, to which the second end 140 of the support element 138 is to be fastened, is opposite a position on the floor 210 of the leisure vehicle, to which the foot element 133 is to be fastened, along the Direction of travel of the recreational vehicle offset.

The base body 110 also has a horizontally running belt fastening element 170, which is arranged in an upper region, preferably in the upper fifth, even more preferably in the upper tenth, of the vertically running columnar structure. A belt loop through which a belt can be guided can preferably be fastened to the belt fastening element. The belt system is preferably a 3-point belt. The length of the belt attachment element is preferably exactly as long as the horizontally running structure 125.

Figure 2 and 3 each show a second embodiment of the Gurtbocks 100, the base body 110 has no stiffening ribs 112. Instead, the belt bracket 100 has carbon fiber strips 120 on the load paths to increase the load. The carbon fiber strips 120 are arranged in such a way that at least at one point of a load path of the base body 110 a force of the load path is absorbed by the continuous fiber reinforcement 120 . It can be seen that continuous fiber reinforcement 120 is preferably arranged on the surfaces of the base body 110 which have a high degree of curvature.

Claims

patent claims

1. Gurtbock (100) for arrangement inside a leisure vehicle for a seating arrangement with at least two seats, characterized in that a base body (110) of the Gurtbocks (100) is made of plastic and/or a composite material.

2. Gurtbock (100) according to claim 1, characterized in that the base body (110) of the Gurtbocks (100) is made in one piece.

3. Gurtbock (100) according to claim 1 or 2, characterized in that the base body (110) of the Gurtbocks (100) is made in plastic shell construction.

4. Gurtbock (100) according to any one of the preceding claims, characterized in that the base body (110) of the Gurtbocks (100) has stiffening ribs (112).

5. Gurtbock (100) according to any one of the preceding claims, characterized in that the base body (110) of the Gurtbocks (100) is produced using extrusion or injection molding.

6. Gurtbock (100) according to one of the preceding claims, characterized in that the base body (110) of the Gurtbocks (100) has a continuous fiber reinforcement (120) to increase the load capacity, which is arranged such that at least at one point of a load path of the base body ( 110) a load path force is received by the continuous fiber reinforcement (120).

7. Gurtbock (100) according to any one of the preceding claims, characterized in that the main body (110) of the Gurtbocks (100) has a cross-like structure (130), the cross-like structure (130) having: a column-like one running vertically when used as intended A structure (132) comprising a foot member (133) constructed and arranged to be attachable to a floor (210) of the recreational vehicle; a structure (135) which runs horizontally when used as intended, the longitudinal axis (136) of which runs on a flea of a seat, in particular a seat cushion, to be fastened to the belt bracket; and a support element (138), which can be fastened with a first end (139) to a floor (210) of the leisure vehicle and at a second end (140), which is opposite the first end (139), with the horizontally extending structure (135 ) is connected, wherein a longitudinal axis of the support element (138) with a longitudinal axis of the columnar structure (132) includes an angle between 20 and 70 °.

8. Gurtbock (100) according to any one of the preceding claims, characterized in that the base body (110) of the Gurtbocks (100) has a flat construction

9. Gurtbock (100) according to one of the preceding claims, characterized in that the base body of the Gurtbocks (100) has at least one flat reinforcement or insert and/or at least one selective reinforcement or insert, the at least one flat reinforcement or insert and/or or the at least one selective reinforcement or insert is designed in such a way that at least one element of the following list can be reversibly and detachably connected to the main body of the belt block (100), the list having: an Isofix mount, a seat cushion mount, at least one headrest, at least one belt loop, at least one fastening eyelet for a belt buckle, at least one retractor and at least one cable bushing for seat detection.

10. Recreational vehicle with a Gurtbock (100) according to any one of the preceding claims.