Method of manufacturing cells and method of manufacturing a loudspeaker comprising such cells

Abstract

The invention relates to a method for manufacturing cells. Said method comprises the following steps: - a) constructing strips comprising two strip plates (21); - b) producing a plate comprising a succession of strips from the previous step; - c) positioning two combs (24) on each width of the plate; - d) constructing a frame around the plate comprising two plates (22) and two angles (23); - e) constructing an acoustic insulator comprising a body of dimensions corresponding to the plate having a solid face and an open face forming a grid whose width of the open spaces of the grid corresponds to the width of said magnets (20); - f) positioning the open face of the acoustic insulator on the rear face of the plate; - g) fixing the acoustic insulator to each angle (23) by the membrane. Figure for the abstract: Fig. 2

Description

Title of the invention: Method for manufacturing cells and method for manufacturing a loudspeaker comprising such cells Technical field of the invention

[0001] The present invention relates to a method for manufacturing Orthophase cells (registered trademark). It applies, in particular, in the field of sound.

[0002] An Orthophase cell aims to minimize problems related to sound phase, which can impact audio quality. Prior art

[0003] In a loudspeaker, sound signals are produced by the vibration of a membrane or cone. Sound phase refers to the synchronization of vibrations of different parts of the loudspeaker. If the phase is not properly managed, it can lead to sound distortions and poor frequency response.

[0004] Loudspeaker designers use techniques, including Orthophase, to ensure that the different parts of the speaker are in phase with each other, resulting in more accurate sound reproduction. This can be achieved by adjusting the speaker geometry and materials used or by using filters and correction circuits to optimize the phase. Presentation of the invention

[0005] The present invention aims to remedy these drawbacks with a completely innovative approach.

[0006] More specifically, the invention aims to provide a new assembly technique to increase the quality of Orthophase cells.

[0007] These objectives, as well as others which will appear subsequently, are achieved, according to a first aspect, using a method for manufacturing Orthophase cells, remarkable in that the method comprises the following steps: - a) constructing bars comprising two bar plates; each bar plate defining two faces and between which are positioned magnets spaced apart from each other; - b) producing a plate comprising a succession of bars from the previous step; one of the faces of a bar is in contact with another face of another bar, said plate being rectangular in shape and comprising a longitudinal axis; - c) positioning two combs across each width of the plate, each comb extending between two ends and comprising a plurality of terminal ends; each terminal end being in contact with each bar plate; each comb comprising a comb attachment means at the ends; - d) constructing a frame around the plate comprising two plates and two angles, said plates are positioned on either side of the plate perpendicular to the combs and are parallel to the longitudinal axis of the plate; the plate comprises a front face and a rear face; said angles are fixed to said comb fixing means; the plates comprise an attachment system configured to hold the plates securely attached to the combs; - e) constructing an acoustic insulator comprising a body of dimensions corresponding to the plate having a solid face and an openwork face forming a grid whose width of the open spaces of the grid corresponds to the width of said magnets; said acoustic insulator comprises a metal grid extending in a serpentine fashion in a longitudinal plane of the metal grid and having two ends; said metal grid being positioned on the openwork face; a membrane is fixed on each side between an edge of said acoustic insulator and an angle iron; - f) position the openwork face of the acoustic insulation on the rear face of the plate; - g) fix the acoustic insulation to each corner using the membrane.

[0008] Acoustic insulation is a single-piece membrane that is generally lighter because it does not require additional parts and glue to hold the parts together. This can reduce the overall weight of the product.

[0009] By avoiding gluing and joints between the parts of the membrane, the risk of unwanted resonances that impair sound quality is reduced. A single-piece membrane offers improved dynamics, producing a clearer and more precise sound.

[0010] The manufacture of a single-piece membrane is simpler and faster than that of a three-part membrane requiring bonding operations.

[0011] The invention is advantageously implemented according to the embodiments and variants set out below, which are to be considered individually or according to any technically effective combination.

[0012] In one embodiment, during step e) of construction of the acoustic insulation, the weight of said acoustic insulation is between 0.8 and 1.7 grams.

[0013] The density of the membrane affects the frequency responses and sound characteristics. In one example, the density is between 12 and 20 kg / cm2.

[0014] According to one example, the low-density membrane has a weight of approximately 1 gram for the medium and high frequencies.

[0015] According to another example the higher density membrane has a weight of approximately 1.5 grams for the low frequency range.

[0016] The mid and high frequency speakers have angled faceplates on both sides of the driver unit to create forward sound projection directionality.

[0017] The low-frequency speaker is equipped with flat plates on both sides of the driver unit, because the low-frequency speaker is an omnidirectional speaker that radiates in all directions.

[0018] In one embodiment, during step e) of constructing the acoustic insulation, each end comprises a connecting wire.

[0019] In one embodiment, during step g) of fixing the acoustic insulation, said fixing being carried out by nylon screws holding the membrane to the angle iron.

[0020] In one embodiment, during step d) of the construction of the frame, said attachment system comprises screws positioned on either side of the plates.

[0021] In one embodiment, during step a) of producing a plate, the number of bars is between eleven and fifteen, preferably thirteen.

[0022] In one embodiment, during step a) of constructing the bars, the magnets are held in position by glue; during step b) of producing a plate, each bar is glued to each other; and during step c) of positioning the two combs, the combs being held in position by glue.

[0023] In one embodiment, said method further comprises a step h) after step g) of fixing the acoustic insulation: - h) fix the acoustic insulation using two fixing bars, the two fixing bars are positioned parallel to the angles.

[0024] In one embodiment, said method further comprises a step of connecting the connection wires of step e) to the nylon screws of step g).

[0025] The invention also relates to a method of manufacturing a loudspeaker comprising at least one row of at least two Orthophase cells, said method comprising the following step: - serial connection of Orthophase cells. Brief description of the figures

[0026] Other advantages, aims and characteristics of the present invention emerge from the following description given, for explanatory and non-limiting purposes, with reference to the appended drawings, in which:

[0027] [Fig. 1] represents a diagram of a part of an Orthophase cell which is the subject of the present invention;

[0028] [Fig.2] represents an exploded view of an Orthophase cell which is the subject of the present invention;

[0029] [Fig.3] represents a front view of an Orthophase cell;

[0030] [Fig.4] represents a rear view of an Orthophase cell;

[0031] [Fig. 5] represents, in the form of a flowchart, steps implemented in a particular embodiment of the method for manufacturing Orthophase cells which is the subject of the present invention;

[0032] [Fig.6] represents a frequency response curve at 1 meter;

[0033] [Fig.7] represents an example of a chassis.

[0034] In the description and the claims, to clarify the description and the claims, the terminology longitudinal, transverse and vertical will be adopted without limitation in reference to the trihedron X, Y, Z. Description of the embodiments

[0035] [Fig.l] shows a diagram of part of an Orthophase cell.

[0036] This diagram represents a three-dimensional view.

[0037] The cell comprises the following elements: bar plates and magnets 20.

[0038] According to an exemplary embodiment, bars are formed from two bar plates.

[0039] The bar plates have two faces.

[0040] When forming the bars, one of the faces of one plate is fixed with one of the faces of the other plate.

[0041] In an exemplary embodiment, prior to assembly, glue is applied to each strip plate 21 so that the magnets 20 are stuck to it.

[0042] The magnets 20 are housed between the two bar plates.

[0043] According to one example, the magnets 20 are separated from each other by spaces predefined.

[0044] The series of bars forms a plate.

[0045] In one embodiment, the bars are glued to each other.

[0046] The series of bars for a plate is between 10 bars and 16 bars.

[0047] According to a variant, the series of bars is 13 bars for a plate

[0048] According to one variant, the bar plates are electrogalvanized sheets.

[0049] Sheet metal is a flat, thin material made from metals. It is produced by rolling and is used in many industrial and domestic applications due to its strength and durability. Sheet metal can be adapted to various uses by cutting, bending, and welding.

[0050] An electrogalvanized sheet is a steel sheet coated with a thin layer of zinc by an electrogalvanizing process.

[0051] The number of electrogalvanized sheets varies according to the number of bars.

[0052] According to a variant, the number of electrogalvanized sheets is between 20 sheets and 30 sheets.

[0053] According to another variant, there are 26 electrogalvanized sheets for 13 bars.

[0054] The magnets 20 are made of ferrite.

[0055] Ferrite is a magnetic material used in the construction of components. Ferrites are ceramic materials that exhibit specific magnetic properties. They are used to control and direct magnetic fields in various electronic applications. Ferrites are non-conductive and are effective in suppressing electromagnetic interference and improving the performance of electronic components.

[0056] The number of magnets 20 in the bars is between 45 magnets and 60 magnets.

[0057] According to one variant, there are 52 magnets.

[0058] Naturally, the invention is described in the above by way of example. It is understood that those skilled in the art are able to carry out different variant embodiments of the invention without departing from the scope of the invention.

[0059] [Fig.2] shows an exploded view of an Orthophase cell.

[0060] The Orthophase cell has a frame before its assembly.

[0061] The frame is composed of the following elements: two plates 22 and two angles 23.

[0062] An angle iron 23 is a commonly used metal construction element. It It is in the form of an L-shaped bar, where two perpendicular sides form a 90-degree angle. One of the wings is longer than the other.

[0063] The frame is located around a plate.

[0064] Previously, two combs 24 are positioned on each width of the plate. Each comb 24 extends between two ends and includes a plurality of terminal ends. Each terminal end has square teeth and each tooth contacts each bar plate 21. Each comb 24 includes a comb attachment means 24 at the ends.

[0065] In one variant the teeth are located between the bar plates.

[0066] According to one example produced, the plate is rectangular in shape.

[0067] The plates 22, the angles 23 and the plate are made of aluminum.

[0068] The angles 23 are fixed to the combs 24 by screws. The plates 22 are fixed to the combs 24 by screws.

[0069] The plate comprises a longitudinal axis.

[0070] According to one example, the plates 22 are positioned on either side of the plate and are parallel to the longitudinal axis of the plate.

[0071] [Fig.3] shows a front view of an Orthophase cell.

[0072] In this figure, an angle iron 23 is shown on one of the sides as well as a plate on top. This is the front face of an Orthophase cell.

[0073] [Fig.4] shows a rear view of an Orthophase cell

[0074] Shown are the magnets 20 and the bar plates 21 as well as a comb 24 on the side and connecting wires 25.

[0075] This figure shows the back of an Orthophase cell.

[0076] [Fig.5] shows the steps in the production of Orthophase cells.

[0077] Step 101 corresponds to step a) of the method, namely constructing bars comprising two bar plates 21. Each bar plate 21 defining two faces and between which are positioned magnets 20 spaced apart from each other.

[0078] Step 102 corresponds to step b) of the method, namely producing a plate comprising a succession of bars from the previous step. One of the faces of a bar is in contact with another face of another bar. The plate is rectangular in shape and comprises a longitudinal axis.

[0079] Step 103 corresponds to step c) of the method, namely positioning two combs 24 on each width of the plate. Each comb 24 extends between two ends and comprises a plurality of terminal ends. Each terminal end is in contact with each bar plate 21. Each comb 24 comprises a comb fixing means 24 at the ends.

[0080] Step 104 corresponds to step d) of the method, namely constructing a frame around the plate comprising two plates 22 and two angles 23. The plates 22 are positioned on either side of the plate perpendicular to the combs 24 and are parallel to the longitudinal axis of the plate. The plate has a front face and a rear face. The angles 23 are fixed to said comb fixing means 24. The plates 22 comprise an attachment system configured to hold the plates 22 securely attached to the combs 24.

[0081] Step 105 corresponds to step e) of the method, namely constructing an acoustic insulator comprising a body of dimensions corresponding to the plate having a solid face and an openwork face forming a grid whose width of the open spaces of the grid corresponds to the width of said magnets 20. The acoustic insulator comprises a metal grid extending in a serpentine (zigzag) fashion in a longitudinal plane of the metal grid and having two ends. The grid has a thickness of between 0.5 and 1 mm, preferably 0.8 mm. The metal grid is positioned on the openwork face. A membrane is fixed on each side between an edge of said acoustic insulator and an angle iron 23.

[0082] There is a double aluminum and tin solder on the ends of the zig zag of the metal grid at the level of the connection wires.

[0083] The acoustic insulation is made of polystyrene and weighs between 1 and 1.5 grams, preferably 1.3 grams.

[0084] Step 106 corresponds to steps f) and g) of the method, namely positioning the openwork face of the acoustic insulation on the rear face of the plate and fixing the acoustic insulation to each corner 23 by the membrane.

[0085] [Fig.6] shows a frequency response curve at 1 meter.

[0086] Low frequencies are better.

[0087] [Fig.7] shows an example of a frame. On this frame it is possible to place 12 Orthophase cells one above the other. According to this example, it has a total height of 1620 mm by 490 mm.

[0088] According to another variant, there are 24 Orthophase cells, or two rows of 12 Orthophase cells.

[0089] It is emphasized that all features, as they emerge for a person skilled in the art from the present description, the drawings and the attached claims, even if concretely they have only been described in relation to other determined features, both individually and in any combinations, can be combined with other features or groups of features disclosed herein, provided that this has not been expressly excluded or that technical circumstances make such combinations impossible or meaningless. List of reference signs

[0090] [Tables 1] References Designations 20 magnet 21 bar plate 22 plate 23 angle iron 24 comb 25 connection wire

Claims

1. Claims Method for manufacturing cells, characterized in that the method comprises the following steps: - a) constructing bars comprising two bar plates (21); each bar plate (21) defining two faces and between which are positioned magnets (20) spaced apart from each other; - b) producing a plate comprising a succession of bars from the previous step; one of the faces of a bar is in contact with another face of another bar, said plate being rectangular in shape and comprising a longitudinal axis; - c) positioning two combs (24) across each width of the plate, each comb (24) extending between two ends and comprising a plurality of terminal ends; each terminal end being in contact with each bar plate (21); each comb (24) comprising a comb fixing means (24) at the ends; - d) constructing a frame around the plate comprising two plates (22) and two angles (23), said plates (22) are positioned on either side of the plate perpendicular to the combs (24) and are parallel to the longitudinal axis of the plate; the plate comprises a front face and a rear face; said angles (23) are fixed to said comb fixing means (24); the plates (22) comprise an attachment system configured to hold the plates (22) securely attached to the combs (24); - e) constructing an acoustic insulator comprising a body of dimensions corresponding to the plate having a solid face and an openwork face forming a grid whose width of the open spaces of the grid corresponds to the width of said magnets (20); said acoustic insulator comprises a metal grid extending in a serpentine fashion in a longitudinal plane of the metal grid and having two ends; said metal grid being positioned on the openwork face; a membrane is fixed on each side between an edge of said acoustic insulator and an angle iron (23); - f) position the openwork face of the acoustic insulation on the rear face of the plate; - g) fix the acoustic insulation to each corner (23) by the membrane.

2. A method according to claim 1, wherein in step e) of constructing the acoustic insulation, the weight of said acoustic insulation is between 0.8 and 1.7 grams.

3. A method according to claim 1, wherein in step e) of constructing the acoustic insulation, each end comprises a connecting wire (25).

4. Method according to claim 1, wherein during step g) of fixing the acoustic insulation, said fixing being carried out by nylon screws holding the membrane to the angle iron (23).

5. Method according to claim 1, wherein during step d) of the construction of the frame, said attachment system comprises screws positioned on either side of the plates (22).

6. Method according to claim 1, in which during step a) of producing a plate, the number of bars is between eleven and fifteen, preferably thirteen.

7. Method according to claim 1, wherein during step a) of constructing the bars, the magnets (20) are held in position by glue; during step b) of producing a plate, each bar is glued to each other; and during step c) of positioning the two combs (24), the combs (24) being held in position by glue.

8. Method according to claim 1, wherein said method further comprises a step h) after step g) of fixing the acoustic insulation: - h) fixing the acoustic insulation by two fixing bars, the two fixing bars are positioned parallel to the angles (23).

9. Method according to claims 3 and 4, wherein said method further comprises a step of connecting the connection wires of step e) to the nylon screws of step g).

10. Method of manufacturing a loudspeaker comprising at least one row of at least two cells according to one of the preceding claims, in which it comprises the following step: - series connection of the cells.

Images