Method for manufacturing cells and method for 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 angle brackets (23); - e) constructing an acoustic insulator comprising a body of dimensions corresponding to the plate, having a solid face and a perforated face forming a grid, the width of the open spaces of the grid corresponding to the width of said magnets (20); - f) positioning the perforated face of the acoustic insulator on the rear face of the plate; - g) attaching the acoustic insulator to each angle bracket (23) by means of 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 is particularly applicable in the field of sound.

[0002] An Orthophase cell aims to minimize problems related to sound phase, which can have an impact on audio quality. Previous technique

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

[0004] Loudspeaker designers use techniques, including orthophase, to ensure that the different parts of the loudspeaker are in phase with each other, resulting in more accurate sound reproduction. This can be achieved by adjusting the geometry of the loudspeaker and the 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 totally 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 process for manufacturing Orthophase cells, remarkable in that the process comprises the following steps: - a) construct bars comprising two plates of bars; each plate of bars defining two faces and between which are positioned magnets spaced apart from each other; - b) produce a plate comprising a succession of bars from the previous step; one face of a bar is in contact with another face of another bar, said plate being rectangular in shape and comprising a longitudinal axis; - c) position two combs on each width of the plate, each comb extends between two ends and comprises a plurality of terminal ends; each terminal end being in contact with each bar plate; each comb includes a comb fixing means at the ends; - d) construct a frame around the plate comprising two plates and two angle brackets, 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 has a front face and a rear face; said angle brackets are fixed to said comb fixing means; the plates have a fastening system configured to hold the plates securely to the combs; - e) construct an acoustic insulator comprising a body of dimensions corresponding to the plate having a solid face and a perforated 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 perforated face; a membrane is fixed on each side between an edge of said acoustic insulator and an angle bracket; - f) position the perforated side of the acoustic insulation on the back side of the plate; - g) fix the acoustic insulation to each corner piece with 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 components together. This can reduce the overall weight of the product.

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

[0010] The manufacture of a one-piece membrane is simpler and faster than that of a three-part membrane requiring gluing 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 operative 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 membrane density affects the frequency responses and sound characteristics. For 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 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 are equipped with angular front plates on both sides of the control unit in order to create a forward projection of sound directivity.

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

[0018] In one embodiment, during step e) of construction of the acoustic insulation, each end has 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 bracket.

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

[0021] In one embodiment, during step a) of making 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 making a plate, each bar is glued to each other; and during step c) of positioning the two combs, the combs are 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 with two fixing bars, the two fixing bars are positioned parallel to the corner brackets.

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

[0025] The invention also relates to a method for 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, purposes and features of the present invention will become apparent from the following description, given for explanatory purposes and in no way as a limitation, with reference to the accompanying drawings, in which:

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

[0028] Fig. 2 represents an exploded view of an Orthophase cell, 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, the steps implemented in a particular embodiment of the manufacturing process for Orthophase cells which is the subject of the present invention;

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

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

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

[0035] Fig. 1 shows a diagram of part of an Orthophase cell.

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

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

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

[0039] The barrette plates have two faces.

[0040] During the formation of the bars, one face of one plate is fixed with one face of the other plate.

[0041] In one embodiment, prior to assembly, glue is applied to each plate of bars 21 so that the magnets 20 are glued to it.

[0042] The magnets 20 are housed between the two barrette 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 together.

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

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

[0048] According to one variant, the barrette plates are electro-galvanized sheet metal.

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

[0050] An electro-galvanized sheet is a sheet of steel coated with a thin layer of zinc by an electro-galvanizing process.

[0051] The number of electro-galvanized sheets varies according to the number of bars.

[0052] According to one variant, the number of electro-galvanized sheets is between 20 and 30 sheets.

[0053] According to another variant, there are 26 electro-galvanized 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 with specific magnetic properties. They are used to control and direct magnetic fields in various electronic applications. Ferrites are non-conductive and effective at 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 above by way of example. It is understood that a person skilled in the art is able to carry out different 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 includes a frame before its assembly.

[0061] The frame consists of the following elements: two plates 22 and two angle brackets 23.

[0062] An angle bracket 23 is a commonly used metal construction element. It It takes 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 comprises a plurality of terminal ends. Each terminal end has square teeth, and each tooth is in contact with each bar plate 21. Each comb 24 has a means for attaching the comb 24 to the ends.

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

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

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

[0068] The angle brackets 23 are fixed to the combs 24 by means of screws. The plates 22 are fixed to the combs 24 by means of screws.

[0069] The plate includes a longitudinal axis.

[0070] According to one example made, 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 bracket 23 is shown on one side as well as a plate on top. This is the front face of an Orthophase cell.

[0073] Figure 4 shows a rear view of an orthophase cell

[0074] Magnets 20 and bar plates 21 are shown, 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 manufacturing steps of Orthophase cells.

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

[0078] Step 102 corresponds to step b) of the process, namely producing a plate comprising a series of bars from the previous step. One face of a bar is in contact with another face of another bar. The plate is rectangular in shape and includes 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 includes a means for attaching the comb 24 to its ends.

[0080] Step 104 corresponds to step d) of the method, namely constructing a frame around the plate comprising two plates 22 and two angle brackets 23. The plates 22 are positioned on either side of the plate perpendicular to the combs 24 and parallel to the longitudinal axis of the plate. The plate has a front face and a rear face. The angle brackets 23 are fixed to the comb fixing means 24. The plates 22 have a fastening system configured to secure the plates 22 to the combs 24.

[0081] Step 105 corresponds to step e) of the process, namely constructing an acoustic insulator comprising a body with dimensions corresponding to the plate having a solid face and a perforated face forming a grid, the width of the open spaces of the grid corresponding to the width of said magnets 20. The acoustic insulator comprises a metal grid extending in a serpentine (zigzag) pattern 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 perforated face. A membrane is fixed on each side between an edge of said acoustic insulator and an angle bracket 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 connecting 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 process, namely positioning the perforated face of the acoustic insulation on the back face of the plate and fixing the acoustic insulation to each angle 23 by the membrane.

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

[0086] The lower frequencies are better.

[0087] Figure 7 shows an example of a chassis. Twelve Orthophase cells can be stacked one above the other on this chassis. In this example, it has a total height of 1620 mm by 490 mm.

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

[0089] It is emphasized that all features, as they are apparent to a person skilled in the art from the present description, drawings and attached claims, even if in practice they have only been described in relation to other specific 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 bracket 24 comb 25 connecting wire

Claims

1. Demands A cell manufacturing process, characterized in that the process comprises the following steps: - a) construct bars comprising two plates of bars (21); each plate of bars (21) defining two faces and between which are positioned magnets (20) spaced apart from each other; - b) produce a plate comprising a succession of bars from the previous step; one face of a bar is in contact with another face of another bar, said plate being rectangular in shape and comprising a longitudinal axis; - c) position 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 being in contact with each bar plate (21); each comb (24) comprises a comb (24) fixing means at the ends; - d) construct a frame around the plate comprising two plates (22) and two angle brackets (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 has a front face and a rear face; said angle brackets (23) are fixed to said comb fixing means (24); the plates (22) have a fastening system configured to hold the plates (22) securely with the combs (24); - e) construct an acoustic insulator comprising a body of dimensions corresponding to the plate having a solid face and a perforated face forming a grid the width of the open spaces of the grid corresponding 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 perforated face; a membrane is fixed on each side between an edge of said acoustic insulator and an angle bracket (23); the weight of said acoustic insulator is between 0.8 and 1.7 grams; - f) position the perforated side of the acoustic insulation on the back side of the plate; - g) fix the acoustic insulation to each angle (23) by the membrane.

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

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

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

5. A method according to claim 1, wherein in step a) of making a plate, the number of bars is between eleven and fifteen, preferably thirteen.

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

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

8. A method according to claims 2 and 3, wherein said method further comprises a step of connecting the connecting wires of step e) to the nylon screws of step g).

9. A method for manufacturing a loudspeaker comprising at least one row of at least two cells according to any one of the preceding claims, wherein it comprises the following step: - connecting the cells in series.

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