DE20013834U1 - Seat element (motorcycle seat) - Google Patents

Description

Utility model application

Designation: Seat element (motorcycle seat)

State of the art: Neoprene cushion with Styrofoam
Foam motorcycle seats
Motorcycle seats made of foam and air chambers

The seat cushion on motorcycle seats is usually quite narrow and made of very firm foam. As a result, the contact pressure is quite high and, on longer journeys, pressure pain under the ischial tuberosities and circulation problems in the thighs occur.

The contact pressure could be improved by using soft foam that would allow the rider to sink deeply into the motorcycle seat. However, this is not possible due to the necessary seat stability while riding.

The above-mentioned invention is intended to register a motorcycle seat that significantly improves seating comfort. This is achieved by combining different materials with different properties that complement each other and work together to create a variable, individually adjustable motorcycle seat.

It offers the possibility of creating a perfectly fitted seat shell that achieves the best possible contact pressure distribution. By sinking into the seat, a safe and stable sitting position is achieved, which prevents slipping when braking and accelerating.

The seat described offers the possibility of changing the sitting position within a few seconds. This is achieved by the built-in foam (2). This foam is very soft and is compressed very strongly when placed under pressure. By briefly lifting the buttocks, the foam draws air through the non-return valve (5) into the airtight cushion cover (1) using its restoring force. The hose (6) and the valve (7) must have a diameter of at least 7 mm so that ventilation does not take longer than 2-3 seconds. When pressure is applied again, the non-return valve (5) only lets the air out so slowly that the user has enough time to find their ideal new sitting position. When the air has been completely pushed out by the weight of the user, approx. 5-7 seconds, a stable seat shell has been created again.

The stability is achieved by the loose bulk material (3) which is located in the airtight cover (1) around the foam core (2). As long as there is enough air in the cushion cover, the bulk material (3) can spread out in such a way that it adapts optimally to the contours of the buttocks. The high elasticity of the neoprene (1) means that this is only limited by the existing seat cover. A bi-elastic material should therefore also be used for the cover.

Due to the high frictional resistance of the bulk material (3), a fixed sitting position is achieved even without a vacuum.

At the end of the air hose there is a shut-off valve (7) which can be closed if you want to maintain the sitting position you have found, even if you leave the seat.

When closed, the valve (7) prevents the foam (2) from expanding

so that the pillow can be re-ventilated.

The built-in foam (2) is cut in such a way that the ischial tuberosities and genitals are positioned on it. This means that the foam (2) must be at least 13 cm wide. It must be connected to the cushion cover (1) at the top and bottom so that the loose bulk material (3) cannot slide between the foam (2) and the cushion cover (1).

When the air has been forced out of the cushion by pressure and a stable seat shell has been created, it is also possible to further contract the foam under the genitals by generating a vacuum, so that additional pressure relief is achieved (Fig. 4 2a).

Since the loose bulk material (3) is hardly elastic, which is important for a stable sitting position on the one hand, but on the other hand does not allow for shock absorption, it is important that the cushion rests on an air tube. The rubber air tube (Fig. 2) has two functions: 1. that of a shock absorber, which allows the air to escape to the sides thanks to the flexibility of the material; 2. the seat height can be adjusted by filling it with more or less air.

List of reference symbols:

1 = Airtight neoprene cover

2 = Soft foam insert for ventilation and soft storage

3 = Bulk material (Styrofoam or cork)

4 = Air filter

5 = Check valve with 2 different air flow speeds
6= Air hose

λ- check valve

8 = Transfer valve

9 = Solid foam for limitation and shaping

10 = Rubber hose for shock absorption and seat height adjustment
11= Stable separating plate between airtight cover and rubber hose
12 = Dual function ball pump

Claims (9)

1. Seat element consisting of a combination of different materials with different properties which complement each other and work together to create a variable, individually adjustable motorcycle seat whose airtight cushion cover ( 1 ) is made of a very flexible material (neoprene). 2. Seat element according to claim 1, characterized in that the foam ( 2 ) is very soft and has a good restoring force in order to quickly ventilate the cushion when the load is removed. The width of the foam in the rear area must be at least 13 cm. 3. Seat element according to claim 1, characterized in that the loose bulk material ( 3 ), in the case of polystyrene, has a very high density, at least 30 kg per cubic meter. 4. Seat element according to claim 1, characterized in that the airtight cover has a transfer valve ( 8 ) for the bulk material. 5. Seat element according to claim 1, characterized in that the foam ( 9 ) is very firm and tapers off towards the top so that a deep sinking into the seat element is possible and the seat element can be pressed outwards. 6. Seat element according to claim 1, characterized in that the check valve ( 5 ) has a diameter of at least 7 mm, so that the ventilation is very fast (2-3 seconds) and the outflowing air takes twice as long. 7. Seat element according to claim 1, characterized in that a rubber hose ( 10 ) is located under the airtight cover ( 1 ) which performs the functions of shock absorption and seat height adjustment. The hose must be attached in such a way that it can expand to the sides in the event of sudden pressure ( Fig. 2). It should be noted that instead of a rubber hose, other materials such as foam or metal springs can also be used to provide the seat element with springs. 8. Seat element according to claim 1, characterized in that between the airtight cover ( 1 ) and the hose ( 10 ) there is a stable plate ( 11 ) which must not touch the foam ( 9 ) and which is intended to prevent the airtight cover ( 1 ) from pressing into the gaps in the air hose ( 10 ). 9. Seat element according to claim 1, characterized in that a dual-function ball pump ( 12 ) is provided for generating a vacuum ( Fig. 4-2a) for the purpose of additional pressure relief and for ventilating the air hose ( 10 ).