CN102650308B - Material is fixed on device on component and uses thereof - Google Patents

Abstract

The invention relates to a device for fastening a material, such as foam or non-woven material, to a component, wherein the component has a protrusion and the device has a clamping part which can be inserted into the On the protruding part, so that the clamping part clamps around the protruding part from both sides; on the core rod part, the core rod part is configured to penetrate the surface of the material into the material.

Description

Apparatus for fastening material to components and use thereof

technical field

The present invention relates to a device for securing material, such as foam or nonwoven material, to a structure.

Background technique

Such devices can be used, for example, in vehicle construction for fastening materials, in particular acoustically effective materials, to support components in the interior of the motor vehicle.

Usually, such materials are glued to the body lining or also the body-in-white of the motor vehicle, for example using self-adhesive films. However, this method presupposes that there is a sufficiently large surface on the support member for obtaining good adhesion with a sufficiently large bonding area.

Usually, such materials are fastened by means of auxiliary means such as welding pins (on the body in white) or plastic covers (on the body lining). However, this is a complex approach that requires the use of tools. In addition, auxiliary means for axially securing the material, such as chucks, are often used for this purpose.

US 5,095,592 also discloses a device for securing material to a component. The device has a body which enters into the material substantially parallel to the surface of the material. In order to securely hold the material on the device, the additional shaping of the main body is designed such that it protrudes into the material at other points. The device is fixed by means of a substantially S-shaped fixing element to a fixed support structure oriented parallel to the surface of the material. The disadvantage of this fastening device is that, in order to be fastened to the support structure, it must have a surface running parallel to the material in the fastened state, and the material is drilled with holes at several points.

Contents of the invention

The technical problem to be solved by the present invention is to provide a device of the above-mentioned type, which is suitable for securely fixing a material on a component with a protrusion, such as for example on an edge or a rib, which overcomes the problems of the existing Technical disadvantages and at the same time cheap to manufacture and simple to operate.

According to the invention, a device for fastening a material, such as a foam or a nonwoven material, on a component having a protrusion has a clamping part which can be inserted on the protrusion so that the A clamping portion clampingly surrounds the protrusion from both sides; a mandrel portion configured to pass through the surface of the material into the material.

The angle between the mandrel portion and the protruding portion preferably ranges between -45° and +45°, preferably 0°. In this way, the material to be fixed can be fixed very well on the mandrel part such that the surface through which the material to be fixed is penetrated is perpendicular to the protrusion.

In a preferred embodiment, the clamping portion abuts directly against the protrusion from both sides. In this way, a good fixation of the clamping portion on the protrusion can be obtained.

Preferably the mandrel portion has a mechanism set up to prevent the material from leaving the mandrel portion. In this way, a very reliable retention of the material on the device is guaranteed.

According to one embodiment, the mandrel part has at least one barb oriented so as to prevent the material from breaking away from the mandrel part. For example, the mandrel portion may have a plurality of barbs extending from the mandrel, eg in different directions.

According to one embodiment of the invention, the mandrel part is formed in a dimensionally stable manner. Through the rigid mandrel part, the penetration of the mandrel part into the material is simplified and the material is firmly fixed.

Preferably, the mandrel part is tapered in at least one dimension at least partially towards the end opposite the clamping part. As a result, the mandrel part can be driven into the material with less force.

According to another embodiment of the present invention, the clamping portion has a mechanism set up to prevent the clamping portion from coming off the protrusion. In this way, a firm fixation of the device on the protrusion is achieved.

In a preferred embodiment, the clamping part has jaws for preventing the clamping part from breaking away from the protruding part.

According to a further embodiment, the device is designed such that it is partially deformable upon the action of an external impact force, preferably in the region of the clamping part and/or in the transition region between the clamping part and the mandrel part, for Prevent the member or the protrusion from being damaged by the impact force. By deflecting the applied forces to deform the device according to the invention, the risk of deformation or damage to components which may not be replaceable as cost-effectively as the device according to the invention is reduced.

The device according to the invention can preferably be used to fasten a material, in particular an acoustically active material (eg foam or non-woven material), to at least one edge and/or rib in a vehicle. Fastening with the device according to the invention can be used, for example, in the interior of a motor vehicle or in the engine compartment. Furthermore, floor linings or wheelhouse linings can be fastened, for example, in the region of the floorpan or wheelhouse.

Description of drawings

Hereinafter, the present invention will be described by way of example with reference to the accompanying drawings.

Figure 1 is a side view of the device of the invention together with the material in a fixed state.

FIG. 2 is a front view showing the inventive device according to FIG. 1 from the front.

Figure 3 is a side view of another embodiment of the device of the present invention.

detailed description

The device of the invention is shown in Figures 1-3. The device comprises a clamping part 1 and a core rod part 2 . The above-mentioned device is formed in one piece in the exemplary embodiment shown, but can also consist of several parts, for example in the form of a combined core rod part and clamping part. The device can be made of different materials, for example metal or plastic.

The clip 1 is used to fix the device on a protrusion 3 of a component. For this purpose, as shown in FIG. 1 , the clamping portion has a shape bent several times in side view for forming the contact surfaces 4 and 4 ′ which surround the projection 3 from both sides. A suitable shape for the clamping projection does not necessarily have to be produced by actual bending during the production of the clamping part, of course. Suitable shapes can also be produced, for example, in plastic injection molding methods.

In the exemplary embodiment shown, one of the two contact surfaces 4 has clamping jaws 5 . The clamping jaw 5 is a molded part of the contact surface 4 which presses against the projection 3 in a frictional manner. In this case, the orientation of the molded part is selected in such a way that the pressure exerted by the clamping jaws 5 on the projection 3 increases when the clamping part 1 is pulled out of the projection 3 . This prevents the device from slipping off the projection 3 . In the embodiment without jaws 5, at least one of the contact surfaces 4, 4' is preferably formed in such a way that this contact surface itself exerts a sufficient pressure on the protrusion 3 to prevent the device from being removed from the protrusion 3. Slip on.

The width of the clamping part 1 , that is to say the distance between the two contact surfaces 4 and 4 ′, can be designed differently in order to ensure a good hold on the protrusions 3 of different thicknesses.

In addition, the height of the clamping portion 1 can be designed to be different in order to provide optimum retention on protrusions of different heights.

The mandrel part 2 extends in the embodiment of FIG. 1 substantially parallel to the clamping part 1 as an extension thereof and parallel to the protrusion 3 . As shown in Fig. 3, the mandrel portion may also form an angle α with respect to the protrusion. Not only in the case of a parallel orientation between the mandrel part and the clamping part, but also in the case of a non-parallel orientation between the two, the mandrel part can be offset relative to the clamping part, that is to say with relative to the clamping part. The protruding part of the holding part.

The mandrel part 2 is now designed thinner than the clamping part 1 , as shown in FIG. 2 , so that it can penetrate into the material 6 more easily. The mandrel part can also narrow towards its end remote from the clamping part 1 , that is to say at least partially into a point.

The illustrated cross-section of the mandrel portion is flat and rectangular. Other cross-sectional shapes like eg circular, triangular, square etc. are also feasible. The mandrel part can then be formed hollow, that is to say like a tube, or it can also be solid.

The mandrel part 2 has barbs 7 . The barb is shaped in such a way that it prevents the material 6 from moving away from the mandrel part 2 . The position and exact shape of the barbs can be designed differently for different materials 6 . In other embodiments, the mandrel part can also have a plurality of barbs, which extend, for example, in different directions.

The material 6 is penetrated by the mandrel part 2 in the fastened state in FIG. 1 in such a way that the barbs 7 are located in the material 6 . Fastening can also be achieved in that the barbs 7 pass completely through the material 6 , so that the barbs 7 are located on the side of the material 6 opposite the clamping part 1 , ie come out of the material 6 .

The length of the core rod part 2 can be designed to have different lengths, for example to provide an optimal holding effect for materials 6 of different thicknesses respectively.

List of reference signs

1- clamping part;

2-core rod;

3 - overhang;

4,4'-contact surface;

5-jaw;

6 - material;

7 - barb;

α - the angle between the protrusion and the core stem.

Claims (8)

1. material is fixed on the device on component, wherein this component has projection and this device has:

-clamping part, this clamping part can be inserted on described projection, thus this clamping part clampingly surrounds this projection from both sides,

-stem, this stem is configured to enter in this material through the surface of this material, wherein, this stem has at least one barb, and the orientation of this barb allows it to stop this material to depart from this stem, wherein, clamping part and stem are designed to integral type, and wherein, stem is designed to the prolongation of clamping part and thinner than clamping part, and there is unified flat rectangular cross section

Wherein, design this device in this wise, this device can be deformed in the transition region under outside impact force action in the region of this clamping part and/or between this clamping part and this stem, thus stop described component or projection impaired due to impact force action.

2. device according to claim 1, is characterized in that, the angle between this stem and this projection is in-45 degree extremely+45 scopes spent.

3. according to the device of claim 1 or 2, it is characterized in that, this clamping part is directly resisted against this projection from both sides.

4. device according to claim 1, is characterized in that, this stem is formed with the form of rigidity.

5. device according to claim 1, is characterized in that, this stem is configured to shorten tip into one end opposite with this clamping part at least partly at least one dimension.

6. device according to claim 1, is characterized in that, this clamping part has the mechanism set up for stoping this clamping part to depart from this projection.

7. device according to claim 6, is characterized in that, this clamping part has jaw, departs from this projection for stoping this clamping part.

8. one kind by according to the device of one of aforementioned claim for material being fixed at least one edge in Motor Vehicle and/or the purposes on rib-shaped piece.