WO2021197848A1

WO2021197848A1 - Diaphragm body

Info

Publication number: WO2021197848A1
Application number: PCT/EP2021/056786
Authority: WO
Inventors: Andre Gerlach; Bernd SCHEUFELE; Friedrich Kneule
Original assignee: Robert Bosch Gmbh
Priority date: 2020-04-01
Filing date: 2021-03-17
Publication date: 2021-10-07
Also published as: DE102020204255A1; CN115315744A

Abstract

The invention relates to a diaphragm body (1a), in particular for an acoustic transducer. The diaphragm body (1a) has a diaphragm (3) and a wall (6a, 6b), wherein the diaphragm (3) and the wall (6a, 6b) of the diaphragm body (1a) are formed integrally as a plastic component, in particular as a fibre/plastic composite component. The diaphragm body (1a) additionally has at least two electrical connection elements (8a, 8b) for electrically connecting a transducer element (2), in particular a piezoelectric transducer element of the acoustic transducer, to a printed circuit board. The at least two electrical connection elements (8a, 8b) are integrated in the diaphragm body (1a), in particular the wall (6a, 6b) of the diaphragm body (1a).

Description

description

Membrane pot

The invention relates to a diaphragm pot, in particular for a sound transducer, and a sound transducer with the diaphragm pot. The invention also relates to a method for producing a membrane pot.

State of the art

The document DE19626293 describes the electrical contacting of a piezo element of an ultrasonic sensor by means of contact springs. The contact springs are cast in an annular connecting body made of plastic. This connecting body is in turn pressed into a pot-shaped oscillating element. This enables mechanical and electrical contact of the contact springs with the piezo element and the inner circumferential surface of the electrically conductive, pot-shaped oscillating element.

Based on this prior art, the object of the present invention is to develop a simplified structure for a diaphragm pot.

Disclosure of the invention

To achieve the object, a diaphragm pot according to claim 1 is proposed. In addition, a sound transducer according to claim 12 and a method for producing a diaphragm pot according to claim 14 are proposed.

The diaphragm pot, which is particularly suitable for a sound transducer, has a diaphragm, in particular an oscillatory diaphragm, and a wall. The membrane and the wall of the membrane pot are designed in one piece as a plastic component, in particular as a fiber-plastic composite component. The diaphragm pot also has at least two electrical connecting elements that are suitable for a transducer element, in particular to connect a piezoelectric transducer element of the sound transducer to a printed circuit board. The at least two electrical connection elements are integrated in the diaphragm pot, in particular in the wall of the diaphragm pot. Due to the integration of the electrical connecting elements and the one-piece design of the diaphragm pot, the construction of the diaphragm pot is carried out in a significantly simplified manner compared to conventionally produced diaphragm pots, the components of which are individually assembled. To integrate the at least two electrical connection elements into the wall of the membrane pot, the electrical connection elements can be at least partially cast into the wall, for example. This form-fitting and cohesive connection between the at least one decoupling element and the diaphragm pot and / or the at least one part of the housing is preferably designed to be non-detachable.

The membrane is preferably designed as a circular area, to which a preferably correspondingly circular cylindrical wall adjoins in the membrane pot. Alternatively, it is conceivable to provide other shapes for the membrane and correspondingly for the wall of the membrane pot. For example, the membrane can also be designed as an oval surface or as a rectangular surface, the wall of the membrane pot having a corresponding shape, thus also being configured, for example, as an oval cylinder or as a rectangular cylinder. The membrane or a partial area of the membrane is preferably reinforced with fibers as a first area of the fiber-plastic composite component and the wall of the membrane pot is designed as a second area of the fiber-plastic composite component free of fibers. Furthermore, the plastic of the fiber-plastic composite component is preferably selected from a thermoplastic or thermosetting plastic.

The at least two electrical connecting elements for electrically connecting the converter element to the printed circuit board are preferably designed as at least two electrical contact pins, in particular electrical plug-in pins. These electrical contact pins are electrically conductive made of metal, in particular copper, and represent a simple, mechanically stable possibility of electrically connecting the transducer element to the circuit board.

The membrane, which is arranged on a bottom of the membrane pot and the, in particular hollow-cylindrical wall of the membrane pot, preferably form an interior space of the membrane pot. The at least two electrical connecting elements are here at least partially arranged in the interior of the diaphragm pot.

The membrane pot preferably also has at least one stiffening element for stiffening the wall of the membrane pot. The at least one stiffening element is arranged in the interior of the diaphragm pot, which is spanned by the wall and membrane of the diaphragm pot, in particular completely in the interior of the diaphragm pot. The purpose of the stiffening element is to decouple the wall of the diaphragm pot in terms of vibration mechanics from the, in particular oscillatable, diaphragm of the diaphragm pot. In addition, the stiffening element preferably has a configurable influence on the functional vibration properties of the membrane pot (e.g. resonance frequency, damping and directional characteristic).

The at least one stiffening element is preferably connected to the diaphragm pot in a form-fitting and / or force-fitting manner. For this purpose, the stiffening element can be glued to the diaphragm pot, for example, and / or there is a press connection between the stiffening element and the diaphragm pot. The stiffening element is preferably detachably connected to the diaphragm pot. In this context, for example, a click connection of the stiffening element with the membrane pot, in particular the wall of the membrane pot, can be provided. The at least one stiffening element is preferably also integrated into the wall of the membrane pot. By integrating the stiffening element into the wall of the diaphragm pot and thus the one-piece design of the diaphragm pot, the construction of the diaphragm pot is carried out in a significantly simplified manner compared to conventionally produced diaphragm pots, the components of which are individually assembled. To integrate the stiffening element in the wall of the diaphragm pot, the electrical connecting elements can, for example, in the wall be cast. The stiffening element is preferably designed to connect opposing surfaces of the wall, in particular the wall, which is designed as a hollow cylinder, to one another. In this context, the stiffening element is arranged on a side of the interior of the membrane pot opposite the membrane. This results in an optimal vibration-mechanical decoupling of the membrane from the wall of the membrane pot. The stiffening element is preferably designed in the form of a plate. Furthermore, the stiffening element is preferably formed from a metal, in particular aluminum. Alternatively, the stiffening element is formed from a plastic or a fiber-plastic composite.

The electrical connecting elements are preferably arranged outside a region of the interior space between the membrane and the at least one stiffening element. The electrical connecting elements, in particular the contact pins, are thus arranged to be easily accessible from the outside, which has advantages, for example, for maintenance or repairs to the contact pins. As an alternative to this, at least a partial area of each of the at least two electrical connecting elements is arranged in an area of the interior space between the membrane and the at least one stiffening element. The at least one stiffening element is thus arranged to be easily accessible from the outside. If the stiffening element is detachably connected to the diaphragm pot and thus not integrated in the diaphragm pot, there is the possibility in both cases of removing the stiffening element, the electrical connecting elements, in particular the contact pins, and also other components of the sound transducer, in particular the transducer element for To achieve maintenance or repairs.

The stiffening element preferably has at least one recess which is designed as a passage for electrically conductive wires connected to the electrical connecting elements. Thus, for example, the electrical connecting elements can be connected to the transducer element in an electrically conductive manner, even if the electrical connecting elements are outside a region of the interior space between the membrane and the at least one stiffening element are arranged.

The at least two electrical connection elements and / or the stiffening element are preferably embedded at least partially in the diaphragm pot, in particular the wall of the diaphragm pot, in such a way that the at least two electrical connecting elements and / or the stiffening element are positively connected to the diaphragm pot. Epoxy resin, for example, can be used as the plastic material. This material connection between the membrane pot and the electrical connecting elements and / or the stiffening element can be achieved if the electrical connecting element and / or stiffening element is wetted by the plastic material during the manufacturing process. For this purpose, a thermosetting material is preferably used as the plastic material. The adhesive properties of the material result in a non-releasable material connection between the membrane pot and electrical connection elements and / or stiffening element. This cohesive connection is comparable to an adhesive connection, but no glue is used, but the adhesive material property of the plastic is used for the connection. It should be noted here that the adhesive properties of the material of the wall of the diaphragm pot are matched to the adhesive properties of the material of the electrical connection elements and / or the material of the stiffening element in order to achieve a permanently durable material connection.

The electrical connecting elements and / or the stiffening element are preferably at least partially embedded in the diaphragm pot, in particular the wall of the diaphragm pot, in such a way that the at least two electrical connecting elements and / or the stiffening element are positively connected to the diaphragm pot. For this purpose, the electrical connection elements and / or the stiffening element have, for example, a partial area which has a greater wall thickness than the remaining area of the electrical connection elements and / or the stiffening element. The section with the thicker wall is at least partially enclosed by the plastic material, so that a form-fitting connection with the diaphragm pot is created.

Another object of the present invention is a sound transducer, in particular an ultrasonic transducer, which has the membrane pot described above, a transducer element, in particular a piezoelectric transducer element, and a printed circuit board. The printed circuit board or circuit board is a carrier for electronic components of the sound transducer. The circuit board is used for mechanical fastening and electrical connection of the sound transducer. The membrane pot here has a membrane and a wall. The membrane and the wall of the membrane pot are designed in one piece as a plastic component, in particular as a fiber-plastic composite component. The diaphragm pot has at least two electrical connection elements for the electrical connection of the transducer element, in particular a piezoelectric transducer element of the sound transducer, to the printed circuit board. The at least two electrical connection elements are integrated into the membrane pot, in particular the wall of the membrane pot. The one-piece construction of the diaphragm and the wall of the diaphragm, as well as the integration of the at least two electrical connecting elements in the diaphragm pot, in particular in the wall of the diaphragm pot, result in a sound transducer with a simple and particularly robust structure.

The at least two electrical connection elements are preferably designed as contact pins, in particular electrical plug-in pins. The sound transducer also has electrically conductive wires for electrically connecting the transducer element to the electrical plug pins. The transducer elements are therefore in electrically conductive contact with the at least two electrically conductive wires and in each case one wire is in turn electrically conductive in contact with in each case one electrical connecting element. The electrical connecting elements are in turn contacted with the circuit board. This means that the transducer can be operated electrically.

The transducer element of the sound transducer is preferably integrated in the diaphragm pot, in particular in a bottom surface of the diaphragm pot. To integrate the transducer element in the diaphragm pot, the transducer element for example, be at least partially poured into the bottom of the diaphragm pot.

Another object of the present invention is a method for producing the membrane pot described above, in particular for a sound transducer. In this case, at least two electrical connecting elements for electrically connecting a transducer element, in particular a piezoelectric transducer element of the sound transducer, to a circuit board are introduced into a cavity of a tool, in particular a tool of an injection molding machine or a tool of a resin injection machine. A plastic material is then injected or injected into the cavity. The at least two electrical connection elements are at least partially in contact with the plastic material and / or are enclosed by the plastic material. The diaphragm pot is thus formed with a wall, with a diaphragm, in particular a diaphragm capable of vibration, and with the at least two electrical connecting elements. The at least two electrical connection elements are integrated into the membrane pot, in particular the wall of the membrane pot.

In addition to forming the vibratory membrane of the membrane pot, a fiber mat is preferably introduced into the cavity of the tool, in particular of the injection molding machine. When the plastic material is injected, the fiber mat is enclosed, in particular completely, by the plastic material. The fiber-reinforced membrane is stabilized in comparison to the wall of the membrane pot. The fiber reinforcement enables advantageous mechanical and / or vibration-mechanical properties of the membrane to be realized.

Furthermore, at least one stiffening element for stiffening the wall of the diaphragm pot is preferably attached to the diaphragm pot. For this purpose, the stiffening element can be attached, for example, to a side of the, in particular hollow-cylindrical, wall of the diaphragm pot opposite the diaphragm. For this purpose, the stiffening element can, for example, be glued to the wall of the diaphragm pot. Alternatively the stiffening element can also be introduced into the cavity of the tool, in particular of the injection molding tool. The plastic material is then injected into the cavity. The stiffening element is at least partially in contact with the plastic material and / or is enclosed by the plastic material. The stiffening element is thus also integrated into the diaphragm pot.

Furthermore, the previously illustrated sound transducer can also be produced by the method. For this purpose, a transducer element is also introduced into a further cavity of the tool, in particular an injection molding tool. The plastic material is then injected into the cavity. The transducer element is at least partially in contact with the plastic material and / or is enclosed by the plastic material. The transducer element is thus integrated into the diaphragm pot, in particular into the bottom of the diaphragm pot. In addition, electrically conductive wires are attached for the electrical connection of the transducer element to the at least two electrical connection elements. In addition, a housing of the sound transducer is connected to a printed circuit board of the sound transducer with the diaphragm pot, in particular in a materially bonded and / or form-fitting and / or force-fitting manner.

Brief description of the figures

Show it:

Figure la shows a first embodiment of a membrane pot.

Figure lb shows a second embodiment of a membrane pot.

Figure lc shows a third embodiment of a membrane pot.

Figure ld shows a fourth embodiment of a membrane pot.

Figure 2 shows an embodiment of a sound transducer. Figures 3 shows different embodiments of a stiffening element of the membrane pot.

FIG. 4 shows an embodiment of a method for producing a membrane pot.

Embodiments of the invention

Figure la shows a diaphragm cup la in a cross section. The membrane pot la has a membrane 3 and a wall 6a and 6b. The membrane 3 and the wall 6a and 6b of the membrane pot la is designed in one piece as a fiber-plastic composite component. The membrane pot la has two electrical connection elements 8a and 8b for the electrical connection of a transducer element 2, in particular a piezoelectric transducer element, to a printed circuit board (not shown here). The two electrical connection elements 8a and 8b are integrated into the wall 6a and 6b of the membrane pot la.

In this embodiment of the membrane pot la, the two electrical connecting elements 8a and 8b are designed as two electrical contact pins, in particular electrical plug-in pins. The contact pins 8a and 8b are partially embedded in the wall 6a and 6b of the membrane pot la such that the contact pins are positively connected to the wall 6a and 6b of the membrane pot la and are thus integrated into the wall 6a and 6b.

The membrane 3 is arranged on a bottom of the membrane pot la and, together with the wall 6a and 6b of the diaphragm pot la, which in this embodiment is designed as a hollow cylinder, an interior 9 of the diaphragm pot la is spanned. The contact pins 8a and 8b are partially arranged in the interior 9 of the membrane pot la.

In addition, the membrane pot la has a stiffening element 10 for stiffening the wall 6a and 6b of the membrane pot la. The stiffening element 10 is arranged completely in the interior 9 of the membrane pot la and connects opposite surfaces of the wall 6a and 6b to one another in this exemplary embodiment. The stiffening element 10, which in this case is made of aluminum, thus supports the wall 6a and 6b and thus prevents the wall 6a and 6b from oscillating when the membrane 3 vibrates. The stiffening element 10, which is plate-shaped in this exemplary embodiment, is arranged on a side of the interior 9 of the diaphragm pot 1 a opposite the membrane 3.

In this exemplary embodiment, the stiffening element 10 is materially connected to the wall 6a and 6b, for example by means of gluing. To position the stiffening element 10 in the interior 9 of the diaphragm pot la, the wall 6a and 6b has a support surface for the stiffening element 10 with an increasing cross-section of the wall 6a and 6b.

In this first exemplary embodiment, the contact pins 8a and 8b are arranged outside a region 5 of the interior 9 between the membrane 3 and the stiffening element 10. In order to nevertheless enable an electrical connection of the contact pins 8a and 8b with the transducer element 2, the stiffening element 10 has recesses, not shown here, which serve as passage openings for electrically conductive wires 7a and 7b connected to the contact pins 8a and 8b.

The membrane 3 is made fiber-reinforced by a fiber mat 4 embedded in the membrane 3.

Figure lb shows a second embodiment of a membrane pot lb. In contrast to the first embodiment, the contact pins 8c and 8d are partially arranged as electrical connection elements in the area 5 of the interior 9 between the membrane 3 and the stiffening element 10. Converter element 2 and contact pins 8c and 8d are electrically connected to one another by means of electrically conductive wires 7c and 7d.

In addition, in contrast to the first embodiment, the stiffening element 10 is integrated into the wall 26a and 26b of the membrane pot 1b. For this purpose, the stiffening element 10 is partially in the wall 26a and 26b of the diaphragm pot lb embedded in such a way that the stiffening element 10 is positively connected to the wall 26a and 26b of the diaphragm pot lb.

Figure lc shows a third embodiment of the membrane pot lc. In contrast to the previous exemplary embodiments, the bottom of the diaphragm pot lc, in particular the diaphragm 3, is made from a first plastic material and the wall 16a and 16b of the diaphragm pot lc is made from a second plastic material. A better vibration-mechanical decoupling between the vibratable membrane 3 and the wall 16a and 16b can thus be created. In particular, in this context, the membrane 3 can thus be designed with different mechanical and / or vibration-mechanical properties than the wall 26a and 26b of the membrane pot 1c.

Figure ld shows a fourth embodiment of the membrane pot ld. In contrast to the previous exemplary embodiments, the two contact pins 8e and 8f adhere to a thermosetting plastic material of the plastic component, in particular an epoxy resin, in such a way that the two contact pins 8e and 8f are firmly connected to the wall 36a and 36b of the membrane pot ld.

FIG. 2 shows a sound transducer 20 with a diaphragm cup lc, which in this case corresponds to the diaphragm cup lc from FIG. The surge transducer 20 additionally has a printed circuit board 15 on which further electronic components 17a and 17b of the sound transducer 20 are arranged. A housing with a cover 16 of the sound transducer 20 is connected to the diaphragm pot lc and closes the interior 9 of the diaphragm pot lc from the external environment. A plug connection 19 is responsible for the power supply and the electronic control of the sound transducer 20.

FIG. 3 shows different embodiments of a stiffening element 50a, 50b or 50c with a circular cross-section for stiffening the wall of the membrane pot. The recess 51 of the left stiffening element 50a, the recesses 52a, 52b of the middle stiffening element 50b and the recesses 53a and 53b of the right stiffening element 50c serve to Reinforcing element to be subsequently attached to the diaphragm pot in an area between the contact pins integrated into the wall of the diaphragm pot and the membrane of the diaphragm pot. The recesses 51, 52a, 52b, 53a and 53b are adapted to the size of the contact pins protruding from the membrane wall and the stiffening elements 50a, 50b or 50c can thus be pushed past the contact pins and further into the interior of the membrane pot. In the case of the left stiffening element 50a, the contact pins are only arranged on one side of the membrane pot. The recesses 51, 52a and 52b also serve as a passage for electrically conductive wires connected to the electrical connection elements. In the left stiffening element 50c, a separate cutout 54 is provided in the center for the wires.

If the stiffening element is also integrated into the wall of the diaphragm pot and therefore does not have to be subsequently arranged in the interior of the diaphragm pot, the recesses 51, 52a, 52b and 54 serve solely as a passage opening for the conductive wires.

FIG. 4 shows a method for producing a diaphragm pot, in particular for a sound transducer, in the form of a flow chart. Here, in method step 100, at least two electrical connecting elements for electrically connecting a transducer element, in particular a piezoelectric transducer element of the sound transducer, to a circuit board are introduced into a cavity of a tool, in particular a tool of an injection molding machine or a tool of a resin injection machine. Subsequently, in method step 130, a plastic material is injected or injected into the cavity. Here, the at least two electrical connecting elements are at least partially in contact with the plastic material and / or are enclosed by the plastic material. Thus, the diaphragm pot is designed with a wall, with an oscillating diaphragm and with the at least two electrical connecting elements. The at least two electrical connection elements are integrated into the membrane pot, in particular the wall of the membrane pot. The procedure is then terminated. Optionally, in method step 120, a stiffening element for stiffening the wall of the membrane pot is additionally introduced into the cavity of the tool, in particular of the injection molding tool. Following this, the plastic material is also injected into the cavity in method step 130. The stiffening element is at least partially in contact with the plastic material and / or is enclosed by the plastic material. The stiffening element is thus also integrated into the diaphragm pot.

Furthermore, optionally, a transducer element is introduced into a further cavity of the tool, in particular of the injection molding tool, in method step 140 to produce a sound transducer with the diaphragm pot. The plastic material is then injected into the cavity in method step 150. The transducer element is at least partially in contact with the plastic material and / or is enclosed by the plastic material. The transducer element is thus integrated into the diaphragm pot, in particular into the bottom of the diaphragm pot.

Furthermore, optionally, electrically conductive wires for electrically connecting the converter element to the at least two electrical connecting elements are arranged in method step 160. In the following method step 170, a housing of the sound transducer is also connected to a printed circuit board of the sound transducer with the diaphragm pot, in particular materially and / or positively and / or non-positively.

Claims

Expectations

1. Diaphragm pot (la, lb, lc, ld), in particular for a sound transducer (20), the diaphragm pot (la, lb, lc, ld) having a diaphragm (3) and a wall (6a, 6b, 16a, 16b, 26a, 26b, 36a, 36b), the membrane (3) and the wall (6a, 6b, 16a, 16b, 26a, 26b, 36a, 36b) of the membrane pot (la, lb, lc, ld) in one piece as a Plastic component, in particular as a fiber-plastic composite component, are designed, the membrane pot (la, lb, lc, ld) having at least two electrical connecting elements (8a, 8b, 8c, 8d, 8e, 8f) for the electrical connection of a transducer element (2) , in particular a piezoelectric transducer element of the sound transducer (20), with a printed circuit board (15), characterized in that the at least two electrical connecting elements (8a, 8b, 8c, 8d, 8e, 8f) in the membrane pot (la, lb, lc , ld), in particular the wall (6a, 6b, 16a, 16b, 26a, 26b,

36a, 36b) of the membrane pot (la, lb, lc, ld) are integrated.

2. membrane pot (la, lb, lc, ld) according to claim 1, characterized in that the at least two electrical connecting elements (8a, 8b, 8c, 8d, 8e, 8f) for the electrical connection of the transducer element (2) to the circuit board ( 15) are designed as at least two electrical contact pins, in particular electrical plug-in pins.

3. membrane pot (la, lb, lc, ld) according to one of claims 1 or 2, characterized in that the membrane (3) on a bottom of the membrane pot (la, lb, lc, ld) and the wall (6a, 6b , 16a, 16b, 26a, 26b, 36a, 36b) of the diaphragm pot (la, lb, lc, ld), in particular a hollow cylindrical wall of the diaphragm pot (la, lb, lc, ld), an interior (9) of the diaphragm pot (la , lb, lc, ld), the at least two electrical connecting elements (8a, 8b, 8c, 8d, 8e, 8f) being arranged at least partially in the interior (9) of the membrane pot (la, lb, lc, ld).

4. diaphragm pot (la, lb, lc, ld) according to one of claims 1 to 3, characterized in that the diaphragm pot (la, lb, lc, ld) furthermore has at least one stiffening element (10, 50a, 50b, 50c) for stiffening the wall (6a, 6b, 16a, 16b, 26a, 26b, 36a, 36b) of the membrane pot (la, lb, lc, ld), the at least one stiffening element (10, 50a, 50b, 50c) in the interior ( 9) of the diaphragm pot (la, lb, lc, ld), in particular completely in the interior (9) of the diaphragm pot (la, lb, lc, ld) is arranged.

5. membrane pot (la, lb, lc, ld) according to claim 4, characterized in that the at least one stiffening element (10, 50a, 50b, 50c) in the wall (6a, 6b, 16a, 16b, 26a, 26b, 36a , 36b) of the membrane pot (la, lb, lc, ld) is integrated.

6. membrane pot (la, lb, lc, ld) according to one of claims 4 or 5, characterized in that the stiffening element (10, 50a, 50b, 50c) opposite surfaces of the wall (6a, 6b, 16a, 16b, 26a, 26b, 36a, 36b), the stiffening element (10, 50a, 50b, 50c) being arranged on a side of the interior (9) of the membrane pot (la, lb, lc, ld) opposite the membrane (3).

7. membrane pot (la, lb, lc, ld) according to one of claims 4 to 6, characterized in that the electrical connecting elements (8a, 8b, 8c, 8d, 8e, 8f) outside an area (5) of the interior (9 ) are arranged between the membrane (3) and the at least one stiffening element (10, 50a, 50b, 50c).

8. Membrane pot (la, lb, lc, ld) according to one of claims 4 to 6, characterized in that at least one sub-area in each case one of the at least two electrical connecting elements (8a, 8b, 8c, 8d, 8e, 8f) in one area (5) of the interior space (9) is arranged between the membrane (3) and the at least one stiffening element (10, 50a, 50b, 50c).

9. membrane pot (la, lb, lc, ld) according to one of claims 5 to 7, characterized in that the stiffening element (10, 50a, 50b, 50c) has at least one recess (52a, 52b, 53a, 53b, 54) for , with the electrically conductive wires (7a, 7b, 7c, 7d, 7e, 7f) connected to electrical connecting elements (8a, 8b, 8c, 8d, 8e, 8f).

10. Membrane pot (la, lb, lc, ld) according to one of claims 1 to 9, characterized in that the at least two electrical connecting elements (8a, 8b, 8c, 8d, 8e, 8f) and / or the stiffening element (10, 50a, 50b, 50c) at least partially in the diaphragm pot (la, lb, lc, ld), in particular the wall (6a, 6b, 16a, 16b, 26a, 26b, 36a, 36b) of the diaphragm pot (la, lb, lc, ld), is embedded in such a way that the at least two electrical connecting elements (8a, 8b, 8c, 8d, 8e, 8f) and / or the stiffening element (10, 50a, 50b, 50c) form-fit with the membrane pot (la, lb, lc , ld) are connected.

11. Membrane pot (la, lb, lc, ld) according to one of claims 1 to 9, characterized in that the at least two electrical connecting elements (8a, 8b, 8c, 8d, 8e, 8f) and / or the stiffening element (10, 50a, 50b, 50c) adhere to a plastic material of the plastic component, in particular a thermosetting plastic, in such a way that the at least two electrical connecting elements (8a, 8b, 8c, 8d, 8e, 8f) and / or the stiffening element (10, 50a, 50b , 50c) with the diaphragm pot (la, lb, lc, ld), in particular the wall (6a, 6b, 16a, 16b, 26a, 26b, 36a, 36b) of the diaphragm pot (la, lb, lc, ld), materially connected are.

12. Sound transducer (20), comprising a diaphragm pot (la, lb, lc, ld) according to one of claims 1 to 11, and a transducer element (2), in particular a piezoelectric transducer element, and a printed circuit board (15), wherein the diaphragm pot ( la, lb, lc, ld) has a membrane (3) and a wall (6a, 6b, 16a, 16b, 26a, 26b, 36a, 36b), the membrane (3) and the wall (6a, 6b, 16a , 16b, 26a, 26b, 36a, 36b) of the diaphragm pot (la, lb, lc, ld) are designed in one piece as a plastic component, in particular as a fiber-plastic composite component, the diaphragm pot (la, lb, lc, ld ) at least two electrical connecting elements (8a, 8b, 8c, 8d, 8e, 8f) for electrical Connection of the transducer element (2), in particular a piezoelectric transducer element of the sound transducer (20), to the printed circuit board (15), and the at least two electrical connection elements (8a, 8b, 8c, 8d) in the membrane pot (la, lb, lc, ld), in particular the wall (6a, 6b, 16a, 16b, 26a, 26b, 36a, 36b) of the membrane pot (la, lb, lc, ld) are integrated.

13. Sound transducer (20) according to claim 12, characterized in that the at least two electrical connecting elements (8a, 8b, 8c, 8d, 8e, 8f) are designed as contact pins, in particular electrical plug-in pins, the sound transducer (20) additionally being electrical having conductive wires (7a, 7b, 7c, 7d, 7e, 7f) for the electrical connection of the transducer element (2) to the contact pins.

14. A method for producing a membrane pot (la, lb, lc, ld), in particular for a sound transducer (20), according to one of claims 1 to 11, the method comprising the following method steps: introduction (100) of at least two electrical connecting elements (8a, 8b, 8c, 8d, 8e, 8f) for the electrical connection of a transducer element (2), in particular a piezoelectric transducer element of the sound transducer (20), to a circuit board (15) in a cavity of a tool, in particular a tool of an injection molding machine, and injecting (130) a plastic material into the cavity, the at least two electrical connection elements (8a, 8b, 8c, 8d, 8e, 8f) at least partially

- rest on the plastic material, and / or

- are enclosed by the plastic material,

, whereby the diaphragm pot (la, lb, lc, ld) with a wall (6a, 6b, 16a, 16b, 26a, 26b, 36a, 36b), with an oscillating diaphragm (3) and with the at least two electrical connecting elements (8a , 8b, 8c, 8d, 8e, 8f), the at least two electrical connection elements (8a, 8b, 8c, 8d, 8e, 8f) in the membrane pot (la, lb, lc, ld), in particular the wall ( 6a, 6b, 16a, 16b, 26a, 26b, 36a, 36b) of the membrane pot (la, lb, lc, ld) are integrated.

15. The method according to claim 14, characterized in that for

Formation of the vibratory membrane (3) of the membrane pot (la, lb, lc, ld) additionally a fiber mat (4) is introduced into the cavity of the tool, in particular the injection molding machine, the fiber mat (4) being removed from the plastic material when the plastic material is injected , in particular completely, is enclosed.