EJECTOR ELEMENT FOR A BELT BUCKLE SENSOR WITH A TRIGGER, AND A BELT BUCKLE WITH SUCH AN EJECTOR ELEMENT

Abstract

An ejector element with a trigger for a belt buckle sensor includes a plate-shaped ejector body and a trigger blade of a magnetic and/or metallic material for producing a change in a magnetic field of a Hall sensor or an inductive sensor. The ejector element is distinguished by the fact that the trigger blade is connected in one piece to the ejector body, wherein the one-piece connection between the trigger blade and the ejector body is produced by an injection-molding process.

Claims

1. An ejector element with a trigger for a belt buckle sensor comprising a plate-shaped ejector body and a trigger blade of a magnetic and/or metallic material for producing a change in a magnetic field of a Hall sensor or an inductive sensor, wherein the trigger blade is connected in one piece to the ejector body, and wherein the one-piece connection between the trigger blade and the ejector body is produced by an injection-molding process.

2. The ejector element as claimed in claim 1, wherein the trigger blade is formed from a magnetic and/or metallic polymer/plastic and the ejector body is formed from a plastic and wherein the one-piece connection between the trigger blade and the ejector body is produced by a multi-component injection-molding process.

3. The ejector element as claimed in claim 2, wherein the ejector body is formed from POM.

4. The ejector element as claimed in claim 1, wherein the trigger blade has a magnetic and/or metallic element and wherein the ejector element is produced by encapsulating the magnetic and/or metallic element with a plastic, so that the trigger blade and the ejector body are produced in one piece by an injection-molding process.

5. The ejector element as claimed in claim 1, wherein the ejector element is formed from POM.

6. A belt buckle including the ejector element of claim 1 and further comprising a Hall sensor or an inductive sensor for sensing a locking state of the belt buckle, wherein the ejector element is displaceable by a belt latch for changing the magnetic field of the Hall sensor or the inductive sensor for sensing a locking state of the belt buckle.

7. A method for producing an ejector element with a trigger for a belt buckle sensor, comprising the following steps injecting a magnetic and/or metallic polymer/plastic, forming a trigger blade, into a cavity of a multi-component injection-molding machine, injecting a further plastic, forming an ejector body, into the cavity, so that a one-piece connection between the trigger blade and the ejector body is produced by a multi-component injection-molding process, wherein injecting the magnetic and/or metallic polymer/plastic forming the trigger blade and the plastic forming the ejector body into the cavity one after the other according to a “multi-component injection molding or sandwich process”, wherein first the magnetic and/or metallic polymer/plastic forming a trigger blade is injected into the cavity and then the plastic forming the ejector body is injected into the cavity, or vice versa, or wherein the magnetic and/or metallic plastic forming the trigger blade and the plastic forming the ejector body are injected into the cavity simultaneously, so that the ejector element is produced according to a co-injection process.

8. The method of claim 7, comprising the following steps placing a magnetic and/or metallic element for the trigger blade into a cavity of an injection-molding machine, injecting a plastic into the cavity, so that the trigger blade and the ejector body are produced by an injection-molding process.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The present invention is described in more detail below on the basis of the exemplary embodiments. In the drawings:

[0049] FIG. 1 shows a schematic illustration of an ejector element according to the invention according to a first exemplary embodiment,

[0050] FIG. 2 shows a schematic illustration of an ejector element according to the invention according to a second exemplary embodiment,

[0051] FIG. 3 shows a schematic perspective illustration of a belt buckle with an ejector element according to the invention in a state in which no belt latch is arranged in the belt buckle, and

[0052] FIG. 4 shows the illustration from FIG. 3, wherein a belt latch is arranged and locked in the belt buckle.

[0053] An ejector element 1 for a belt buckle sensor 2 comprises a plate-shaped ejector body 3 and a trigger blade 4 (FIGS. 1 to 4).

DETAILED DESCRIPTION

[0054] According to a first exemplary embodiment, the trigger blade 4 is formed from a magnetic and/or metallic material for producing a change in a magnetic field of a Hall sensor or an inductive sensor (FIG. 1).

[0055] The trigger blade 4 and the ejector body 3 are connected in one piece to one another.

[0056] The ejector body 3 is formed from a plastic, preferably polyoxymethylene (POM).

[0057] The ejector body 3 is configured to be approximately rectangular and plate-shaped in such a way that it can be arranged in a belt latch guide 5 of a belt buckle 6 and can be displaced in, and counter to, an insertion direction 8 by means of a belt latch.

[0058] The trigger blade 4 is configured to be approximately rectangular and plate-shaped and is provided in order to trigger a signal in a belt buckle sensor. The belt buckle sensor 2 is preferably configured as a Hall sensor.

[0059] In this case, provision is made for a current flowing through the Hall sensor 2 to generate a magnetic field. A Hall voltage resulting therefrom is approximately zero volts.

[0060] As soon as the trigger blade 4 is displaced by way of the actuation by means of a belt latch (not illustrated) in the region of the magnetic field of the Hall sensor 2, the magnetic field changes and a corresponding Hall voltage is non-zero.

[0061] This signal can be detected and thus makes it possible to determine the locking state of a belt buckle 6.

[0062] The one-piece connection between the trigger blade 4 and the ejector body 3 is produced by a multi-component injection-molding process.

[0063] According to a method according to the invention for producing an ejector element 1, in particular according to a first exemplary embodiment, for a belt buckle sensor 2, the following steps are provided.

[0064] Injecting a magnetic and/or metallic polymer, forming the trigger blade 4, into a cavity of a multi-component injection-molding machine.

[0065] Injecting a further plastic, forming the ejector body 3, into the cavity, so that a one-piece connection between the trigger blade 4 and the ejector body 3 is produced by a multi-component injection-molding process.

[0066] The magnetic and/or metallic polymer forming the trigger blade 4 and the plastic forming the ejector body 3 are injected into the cavity one after the other according to a multi-component injection molding or sandwich process, wherein first the magnetic and/or metallic polymer forming the trigger blade 4 is injected into the cavity and then the plastic forming the ejector body 3 is injected into the cavity, or vice versa.

[0067] As an alternative, provision can also be made for the magnetic and/or metallic polymer forming the trigger blade 4 and the plastic forming the ejector body 3 to be injected into the cavity simultaneously, so that the ejector element 1 is produced according to a co-injection process.

[0068] In the following text, an ejector element 1 according to the invention is described according to a second exemplary embodiment (FIG. 2). Unless otherwise described, this ejector element 1 comprises the same technical features as the ejector element 1 according to the first exemplary embodiment. Identical components are provided with the same reference designations.

[0069] The trigger blade 4 has a magnetic and/or metallic element 7, wherein the ejector element 1 is produced by encapsulating the magnetic and/or metallic element 7 with a plastic, so that the trigger blade 4 and the ejector body 3 are produced in one piece by an injection-molding process.

[0070] According to a corresponding method for producing such an ejector element 1, the following steps are provided.

[0071] Placing the magnetic and/or metallic element 7 for the trigger blade 4 into a cavity of an injection-molding machine.

[0072] Injecting a plastic into the cavity, so that the trigger blade 4 and the ejector body 3 are produced by an injection-molding process.

[0073] Here, provision is made for the plastic to completely or virtually completely enclose the metallic element 7. Accordingly, here, the magnetic and/or metallic element 7 is encapsulated in order to form the trigger blade 4.

[0074] Furthermore, according to the invention, a belt buckle with an ejector element 1 according to the invention is provided.

[0075] A corresponding belt buckle is configured similarly to the belt buckle described in DE 10 2014 112 257 A1.

LIST OF REFERENCE DESIGNATIONS

[0076] 1 Ejector element [0077] 2 Belt buckle sensor [0078] 3 Ejector body [0079] 4 Trigger blade [0080] 5 Belt latch guide [0081] 6 Belt buckle [0082] 7 Element