NO155570B - RUBBER MATS OF RUBBER, PLASTIC E.L. FOR VEHICLES. - Google Patents

Abstract

1. Foot area mat (5), made of rubber or plastic, or of some similar material, this foot area mat (5) being designed for placing on textile floor coverings in motor vehicles and having a main body (6) which exhibits a multitude of studs or other projections (10) on its undersurface that faces the textile floor covering (2), these studs or projections (10) penetrating at least partially into the floor covering and being distributed over the undersurface in an arrangement such that they are spaced one from another, characterized in that the projections (10) exhibit a plurality of resistance faces (16, 17, 20, 21, 22, 26, 27, 29, 30, 31 or 33) which stand proud on the surface of the main body (6) of the mat, approximately perpendicularly, or else inclined to the perpendicular at only a small angle of attack (alpha) and which are arranged approximately perpendicularly to the directions (13, 15) in which loads are applied, and in that the resistance faces on the projections (10) are supported so as to prevent the latter from being bent over when forces act on them, this support being provided by accumulations (18, 23, 24 or 28) of projection material that merge gradually into the undersurface (9) of the main body (6) of the mat.

Description

The present invention relates to a rubber floor mat,

plastic or similar to lay on textile floor coverings in vehicles with a mat main body where on the underside facing the textile floor covering there are larger nubs or other projections that at least partially penetrate the floor covering, which are arranged distributed over the underside with mutual distances. Such floor mats serve, on the one hand, to protect the textile floor covering against soiling and penetration

of moisture such as in winter is brought in in the form of snow that hangs on the footwear, and on the other hand, the floor mat must provide a safe and reliable support for the foot during operation of the pedals and thus lie on the textile floor covering with the greatest possible adhesion friction, so that sliding of the mat is prevented when force is applied .

Floor mats of the type indicated are known for applications in motor vehicles. These have protrusions on the underside in the form of knobs that are pyramidal and have a height of approx. 3 mm. The distance from nub to nub is approx. 10 to 40 mm. The nubs

is arranged randomly and without relation to the ribs on the upper side of the mat main body. These pyramidal buds

indeed ends in a point, but still only penetrates to a certain extent into the textile floor covering, so that when under load, i.e. e.g. by oblique pressure from the driver's foot against the mat slightly bends and the mat thereby slides,

i.e. the sticking friction is lost and turns into a sliding friction. These well-known floor mats only have little attachment respectively

low holding capacity under load. Underneath, the main load direction is forward in the direction of travel of the motor vehicle, but loads in the opposite direction and across also occur.

From the British design application 1004517, a floor mat is known in which the protrusions are arranged in the form of ribs that run across the entire width of the mat. Relatively high designed ribs are arranged at a distance, which have a counter-holding surface in the main operating direction and in the opposite direction to this proceed with a flat transition in the material of the mat main body. Between these ribs arranged at a distance, there are several similarly arranged parallel to these running ribs of a much smaller height, which stand out V-shaped from the material of the main body of the mat. These ribs take up practically the entire remaining surface of the underside of the main body of the mat. It is not suitable for penetrating the textile floor material, but at the same time only forms a slightly larger designed surface roughness. This well-known floor mat does have a relatively good grip

in the direction of the main load, i.e. by the impact of forces in the vehicle's direction of travel. In the opposite direction to this, the mat becomes very light. In the case of lateral forces, no appreciable resistance to sliding appears in the end. These protrusions in the form of ribs that run across the entire width are also disadvantageous for the production of such floor mats as this necessitates a three-dimensional design of a mold base,

in which the ribs must be incorporated with side restraints in the form of recesses. This makes the production of the molds more expensive.

Furthermore, floor mats are known to have protrusions on the underside

in the form of a wedge-shaped cross pattern, in which the ribs crossing each other have round or pyramidal cross-sections. Such a design is shown by the German GM 1931813, under which the floor mat is placed with its beehive-shaped structure downwards on the textile floor material when used in the summer. This beehive-shaped structure forms the upper side of the floor mat when used in winter, so that it is already clear from this that the mat is not made to achieve the best possible attachment against displacement and sliding.

The invention is based on the task of achieving the greatest possible slip resistance (fixation) of the mat in the directions of stress from a floor mat of the type described at the outset.

According to the invention, this is achieved by the protrusions having several resistance surfaces that stand vertically or only at a small angle inclined to the plumb line against the surface of the main body of the mat, which are arranged approximately perpendicular to the directions of attack of the main load forces of the mat, and that the resistance surfaces on the protrusions have support against bending of the protrusions below impact of force by the thickening of the projection material with a gradual transition in the underside of the mat body. Thereby, an astonishing improvement in the attachment of such a laid foot mat to a textile covering is achieved, which satisfies the inherently contradictory

requirements for particularly deep penetration of the protrusions into the textile covering on one side, which can only be achieved with particularly pointed protrusions, and prevention of the bending of such protrusions by displacement forces that attack the mat, which can only be achieved with particularly blunt protrusions. The purposeful support of the protrusions directed against the counter-holding feet and the forces that attack these surfaces and the many spaced protrusions are responsible for the achieved attachment. The counter-holding rafts can be placed individually on the projections in completely different ways, but it is essential that each projection is at least two counter-holding surfaces which are usually arranged at an angle of 90° to each other, so that a projection improves the attachment in several load directions. The greatest stress on a floor mat occurs in the direction of travel when the driver, who is already seated, tries to adopt a different sitting position by supporting his feet

on the floor mat and lean your back against the backrest. At this moment, a forward thrust acts on the foot mat. When operating the pedal, the load forces can act forwards or backwards on the foot mat. When entering the motor vehicle, lateral forces eventually act on the foot mat. In addition, forces that cannot be classified in these three main directions must also be absorbed, but these forces are usually much smaller. Therefore, it is appropriate that the counter-retaining rafts are arranged at approximately right angles to each other and these are placed in relation to the load directions.

The invention can also be seen in the combination of the following features: a) The protrusions have several resistance surfaces which are arranged roughly parallel to the load direction, roughly vertical, respectively only at a slightly deviating angle in relation to the plumb line on the surface of the main body of the mat. b) Adjacent resistance surfaces are always at an angle of 90° or less than 90° to each other. c) Adjacent resistance surfaces are connected by thickening of projection material to form a resistance stiffener

protrusion against horizontal load.

d) All the surfaces of material the thickening that is formed, provided that they are not restricted as resistance surfaces, form a

flank angle 0 less than 90° with the counter-holding rafts.

e) The size, position and number of projections are limited so that the projections at a normal specific

surface load of a maximum of 0.02 kg/cm 2 (acting perpendicular to the mat surface) penetrates the underlying textile floor covering by at least one third of the height of the protrusions.

The projections conveniently have a smaller flank angle

than 60° between the buttress rafts and the enrichment of the outcrop material and a smaller slope angle - especially less than 10°. Thus, on the one hand, it is ensured that the protrusions can also penetrate sufficiently deeply into the textile material, especially when, in addition to the weight and the floor mat itself, they are loaded with an additional force, e.g. the weight of the foot etc. On the other hand, such protrusions can also be easily shaped, i.e. the production of the foot mat does not present significant difficulties.

The projections can be arranged in a line and/or in a row

or shifted relative to each other. This can be done in the same or different way from line to line or even from row to row. The device must in each case be chosen so that a sufficiently large penetration depth of the protrusions in the textile covering is achieved, i.e. a correspondingly high surface pressure with correspondingly large distances between the protrusions. It is also possible on the underside of the mat main body to arrange the projections with the same shape, but differently oriented in relation to each other to take account of different load directions. This different orientation is particularly advantageous because the shape of the protrusions in this respect does not have to be changed and the effects are still achieved in

the different load directions. The counter-holding surface of the protrusions which protect against the foot mat sliding in the direction of travel can be arranged in greater numbers and/or with a larger angular surface in relation to the other counter-holding surfaces in order to have a preferred direction, namely in the direction of the main load.

The protrusions can be formed in and of themselves completely differently, when they have at least two counter-holding surfaces. With particular advantage, the protrusions can be designed star- or T-shaped, whereby one counter-holding surface then appropriately with its projection material forms the support for the other counter-holding surface which has a relative thickening of 90°. This means that the mentioned parts of the protrusions always have a double function: On the one hand, they form counter-holding surfaces, and on the other hand fill

>they a support function.

It is also possible to arrange several resistance surfaces parallel to each other on a projection, which in particular may have different heights in relation to each other, so that these resistance surfaces are still effective at different penetration depths of the projections. The protrusions end/on

the end. which faces away from the main body of the mat, at a point or at an edge, and is therefore not rounded and not shaped to flatten, in order to facilitate penetration into the surface of the textile covering.

The protrusions on the underside of the main body of the mat are preferably arranged where there are ribs or other elevations on the upper side of the main body of the mat, so that the forces exerted by the foot on the mat are immediately and without bending the main body of the mat transferred to the protrusions, which can then sink even deeper into the surface of the textile material and thereby press and claw themselves firmly, so that increased adhesion and slip resistance are the result.

Embodiments of the invention are further described in the drawing. These show: Fig. 1 a cross-section through part of the foot mat i

the load situation,

Fig. 2 the section according to fig. 1 from above,

Fig. 3 a projection of the underside of the mat main body

opposite,

Fig. 4 projection according to fig. 3 side view,

Fig. 5 a differently shaped projection seen directly opposite,

Fig. 6 projection according to fig. 5 side view,

Fig. 7 a further embodiment of the projection,

Fig. 8 the projection according to fig. 7 side view,

Fig. 9 shows a further embodiment of the projection

opposite,

Fig. 10 projection according to fig. 9 side view,

Fig. 11 a further embodiment of the projection,

Fig. 12 the projection seen from the side,

Fig. 13 a toothed projection seen directly opposite,

Fig. 14 projection according to fig. 13 side view,

Fig. 15 a star-shaped projection seen directly opposite,

Fig. 16 a corresponding drawing seen from the side,

Fig..17 a T-shaped protrusion seen directly opposite,

Fig. 18 projection according to fig. 17 side view,

Fig. 19 a section of the underside of a mat showing the arrangement of the protrusions in their relative position,

Fig. 20 a corresponding view from the side,

Fig. 21 another arrangement possibility of the protrusions,

Fig. 22 the arrangement of the protrusions according to fig. 21 sets

from the side,

Fig. 23 section according to the line XXIII-XXIII according to fig. 24

which shows elevations on the upper side of the mat main body and

Fig. 24 a section of the mat seen from above.

In fig. 1 and 2, the vehicle floor 1 shown is produced as a pressed steel part. The spacious perimeter of this vehicle floor 1 is covered with a textile covering 2, which e.g. can consist of an elastic support layer 3 and a textile layer 4, which can be designed as loops, cut loops, fibers etc. The textile covering 2 is preferably glued to the vehicle floor 1. On this textile covering 2, a foot

mat 5, which has a continuous mat main body, on whose upper side 7 elevations 8 are arranged, mostly in the form of continuous ribs etc. The mat main body 6 has an underside 9, from which individual protrusions 10 protrude downwards and already due to the specific weight of the foot mat 5 penetrates to a certain extent into the surface of the textile covering 4.

Quite schematically, a weight 11 is indicated which corresponds to the weight, or the partial weight, of the leg of a person sitting in the vehicle. In addition to the weight of the leg, support forces can also act on the foot mat 5, which is indicated by the arrow 12. Hereby, the foot mat 5 sinks to a certain extent x with its projections 10 into the textile layer 4 of the textile covering 2. The arrow 13 in fig. 2 suggests the main load direction of the foot mat 5, which is also consistent with the direction of travel of the motor vehicle while driving forward. The arrow 14 illustrates the opposite direction, while the arrows 15 indicate the directions in which transverse forces can act on the foot mat 5, such as e.g. when entering the motor vehicle.

Fig. 3 and 4 show a first embodiment of a single projection 10. This projection stands up with a square surface from the underside 9 of the mat main body 6 and has three counter-holding surfaces 16 and 17, under which the counter-holding rafts 16 rise approximately vertically from the surface of the main mat body 6 and thus itself gives a right-angled surface, while the resistance rafts 1? has a triangular outline, as can be seen from fig. 4. As on the back of the counter-holding rafts j 16, a thickening 18 of the material of the protrusion 10 is formed, which in comparison with the counter-holding surface 16 constitutes a gradual transition in the underside 9 of the mat main body 6. This thickening 18 thus effectively supports the counter-holding surface 16 against bending of the protrusion 10 under load. It can be seen from fig. 4 that the flank angle P is still rather pointed, so that the projection 10 ends in an edge 19, which can easily penetrate into the textile layer 4 of the textile coating 2. The arrangement of these projections according to fig. 2 to 4 show that the resistance surface . 16 is arranged against the main load direction according to arrow 13, while the counter-holding rafts 17 support the mat across the directions according to arrow 15.

Here, there are no significant resistance surfaces against forces according to arrow 14 which act backwards.

The embodiment of the individual projections 10 according to fig. 5

and 6 are similar to those according to fig. 3 and 4. Unlike this, however, the counter-holding surface is . 16 is not arranged vertically on the underside 9 of the mat main body 6, but at a relatively small slope angle a which should in any case be below 10°.

The embodiment according to fig. 7 and 8 show a projection, by which a smaller counter-holding surface 20 is arranged opposite the counter-holding surface 16. Between the counter-holding surfaces 16 and 20 is the thickening 18. The holding surface 16 has a smaller angle a. The counterholding surface 20 has the

small angle

Fig. 9 and 10 show an embodiment of a projection 10 shaped as an angle, where vertical counter-holding surfaces 21 and 22 are arranged at right angles to each other. Behind the counter-holding rafts 21 and 22 there are thickenings 23 and 24 of the material of the projection 10, which gradually transitions into the underside 9 of the mat main body 6. This gives an angled edge 2 5 for penetration into the textile covering 2. Next to these two main counter-holding surfaces. 21 and 22, smaller counter-holding surfaces 26 and 27 are also arranged.

The embodiment and the projection 10 according to fig. 11 and 12

is completely similar, i.e. likewise constructed at an angle, under which the counter-holding rafts 21 and 22 are, however, here supported

by a relatively oblique thickening 28, which gradually transitions into the underside 9 of the mat main body 6.

The embodiment in fig. 13 and 14 show a tooth-shaped projection, whereby further counter-holding surfaces - 29 and 30 are arranged parallel to the counter-holding surface ■ 16. The counter-holding surfaces 29 and 30 become effective in addition to the counter-holding rafts 16 and 17 when the projection 10 penetrates deeper into the textile covering 2.

Fig. 15 and 16 show a star-shaped design of a projection, which has several counter-holding surfaces 31, which at the same time form thickenings against each other, so that this projection 10 is secured

against bending under load. All counter-holding surfaces 31 run together in a point 32.

v

The embodiment according to fig. 17 and 18 are T-shaped. Next

of a counter-holding surface 16 and smaller counter-holding surfaces 17, counter-holding surfaces 33 are arranged, which at the same time form thickenings for supporting the counter-holding surface. 16 next to the thickenings 18. Parallel to the bearing surface. 16, there extends a smaller counterweight 20. Also with this T-shape of the projection

10 you get mutual support.

The projections 10 can be arranged in a completely different way on the underside 9. Figures 19 and 20 and 21 and 22 respectively show two examples of this. According to fig. 19 and 20 are the protrusions 10 in the embodiment of fig. 9 and 10 aligned linearly or in rows, but oriented differently in relation to each other. Fig. 21 and 22 show the design of a projection according to fig. 3 and 4, during which a shift from row to row constantly takes place. Further arrangement possibilities are of course also conceivable.

Fig. 23 and 24 clearly show that the protrusions 10 can in particular be arranged there on the underside 9 of the mat main body 6,

where the elevations 8 are located on the upper side 7. This causes the forces applied by a person's foot to be immediately transferred from the elevations 8 to the protrusions 10 without any significant deflection and thus weakening of the forces taking place in the area of the mat main body 6. This contributes to the protrusions 10- penetrating particularly deeply into the textile covering 2 and crouching there, so that the attachment or the sliding safety of the foot mat 5 is considerably improved.

Claims (10)

1. Floor mat made of rubber, plastic or similar to be placed on textile floor coverings in vehicles, with a main mat body which on the underside facing the textile floor covering has several nubs or protrusions which at least partially penetrate the floor covering, which are arranged distributed over the underside with mutually distance, characterized in that the protrusions (10) have several approximately vertical or only at a small angle (d) in relation to the plumb line against the plate of the mat body (6) protruding counter-holding surfaces (16, 17, 20, 21, 22, 26, 27, 29, 30, 31 respectively 33), which are arranged approximately perpendicular to the directions of attack of the mat's main loading forces, and that the counter-holding rafts on the protrusions (10) have support against bending of the protrusions under the influence of force by thickenings (18, 23, 2 4 and 28 respectively) of the projection material with a gradual transition in the underside (9) of the mat body (6). 2. Floor mat according to claim 1, characterized in that the resistance layers. (for example 16 and 17, 16 and 33 or 31 and 33) are arranged at approximately right angles to each other. 3. Floor mat according to claim 1 or 2, characterized in that the protrusions (10) have a flank angle (p) of less than 60° between the counter-holding surface and the thickening of the protrusion material and a smaller slope angle - especially less than 10°. 4. Floor mat according to one of the claims 1 to 3, characterized in that the protrusions (10) are arranged in line - or in a row offset in relation to each other. 5. Floor mat according to claim 2, characterized in that on the underside (9) of the mat body (6) the projections (10) are arranged with mutually different orientations and the same design. 6. Floor mat according to claim 1, characterized in that the counter-holding rafts (16, 21, 29, 30 and 31 respectively) of the protrusions (10) which protect against sliding of the floor mat (5) in the direction of travel (Arrow 13) are arranged in a larger number and/or with a larger angular surface than the other counter-holding surfaces (pre-example 17, 22, respectively 33). 7. Floor mat according to one of the claims 1 to 6, characterized in that the protrusions (10) are designed star- or T-shaped, and that one counter-holding surface (31) respectively 16) with its projection material forms the support for the other counter-holding surface (31) respectively 33) displaced approximately 90° in relation to the first counter-holding surface. 8. Floor mat according to claim 1, characterized in that on a projection (10) several mutually parallel counter-holding surfaces (16, 20, 21, 27, 29, 30 and 31 respectively) are arranged which in particular have different heights in relation to each other. 9. Floor mat according to claim 1, characterized in that the projections (10) on their end face away from the underside (9) of the mat body (6) end in a tip (32) or an edge (19 or 25 respectively). 10. Floor mat according to claim 1, characterized in that the projection (10) on the underside (9) of the mat main body (6) is arranged where there are ribs or other elevations (8) on the upper side (7) of the mat main body (6).