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 a multi-component injection-molding process; wherein an entirety of the trigger blade is formed from a first plastic that is a magnetic and/or metallic polymer/plastic and the ejector body is formed from a further plastic, wherein the trigger blade and the ejector body are a common molded structure such that the one-piece connection between the trigger blade and the ejector body is a molded connection between the first plastic and the further plastic.

2. The ejector element as claimed in claim 1, wherein the ejector body is formed from polyoxymethylene.

3. 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.

4. 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: the magnetic and/or metallic polymer/plastic forming the trigger blade and the further plastic forming the ejector body 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/plastic forming the trigger blade-is injected into the cavity and then the further plastic forming the ejector body is injected into the cavity, or vice versa, or the magnetic and/or metallic polymer/plastic forming the trigger blade and the further plastic forming the ejector body are injected into the cavity simultaneously, so that the ejector element is produced according to a co-injection process.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The present invention is described in more detail below on the basis of the exemplary embodiments. In the drawings:

(2) FIG. 1 shows a schematic illustration of an ejector element according to the invention according to a first exemplary embodiment,

(3) FIG. 2 shows a schematic illustration of an ejector element according to the invention according to a second exemplary embodiment,

(4) 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

(5) FIG. 4 shows the illustration from FIG. 3, wherein a belt latch is arranged and locked in the belt buckle.

(6) 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

(7) 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).

(8) The trigger blade 4 and the ejector body 3 are connected in one piece to one another.

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

(10) 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.

(11) 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.

(12) 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.

(13) As soon as the trigger blade 4 is displaced by way of the actuation by means of a belt latch 8 (shown in dashed line) in the region of the magnetic field of the Hall sensor 2, the magnetic field changes and a corresponding Hall voltage is non-zero.

(14) This signal can be detected and thus makes it possible to determine the locking state of a belt buckle 6.

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

(16) 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.

(17) Injecting a magnetic and/or metallic polymer, forming the trigger blade 4, into a cavity 9 (shown in dashed line) of a multi-component injection-molding machine.

(18) 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.

(19) 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.

(20) 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.

(21) 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.

(22) 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.

(23) According to a corresponding method for producing such an ejector element 1, the following steps are provided.

(24) Placing the magnetic and/or metallic element 7 for the trigger blade 4 into a cavity of an injection-molding machine.

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

(26) 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.

(27) Furthermore, according to the invention, a belt buckle with an ejector element 1 according to the invention is provided.

(28) A corresponding belt buckle is configured similarly to the belt buckle described in DE 10 2014 112 257 A1.

LIST OF REFERENCE DESIGNATIONS

(29) 1 Ejector element 2 Belt buckle sensor 3 Ejector body 4 Trigger blade 5 Belt latch guide 6 Belt buckle 7 Element