阅读说明：本技术 分布式换能器悬架纸盆(dtsc) (Distributed Transducer Suspension Cone (DTSC) ) 是由 蒂莫西·鲁本·谢克 马蒂亚斯·杰弗里·谢克 于 2018-04-24 设计创作，主要内容包括：一种扬声器装置(1),具有：框架(2)、两个相对的指向膜片(3、3’)以及两个扬声器驱动器,每个扬声器驱动器均具有用于在操作中驱动两个相对的指向膜片(3、3’)的至少一个磁力驱动器(10、10’)。扬声器阻尼器(5、5’)与两个相对的指向膜片(3、3’)中的每一个相关联,并且具有：被布置成由相关联的至少一个磁力驱动器(10、10’)驱动的线圈托架(4、4’)、被布置成将膜片(3、3’)固定地附接到扬声器阻尼器(5、5’)的膜片连接构件(6、6’)、以及被布置成将扬声器阻尼器(5、5’)固定到框架(2)的阻尼器框架连接构件(8、8’)。扬声器阻尼器(5、5’)还包括被布置在膜片连接构件(6、6’)与阻尼器框架连接构件(8、8’)之间的阻尼器腿部构件(7、7’)。(A speaker device (1) has: a frame (2), two oppositely directed diaphragms (3, 3 '), and two loudspeaker drivers, each having at least one magnetic driver (10, 10 ') for driving the two oppositely directed diaphragms (3, 3 ') in operation. A loudspeaker damper (5, 5 ') is associated with each of the two oppositely directed diaphragms (3, 3') and has: a coil carrier (4, 4 ') arranged to be driven by an associated at least one magnetic driver (10, 10 '), a diaphragm connection member (6, 6 ') arranged to fixedly attach the diaphragm (3, 3 ') to the speaker damper (5, 5 '), and a damper frame connection member (8, 8 ') arranged to fix the speaker damper (5, 5 ') to the frame (2). The loudspeaker damper (5, 5 ') further comprises a damper leg member (7, 7') arranged between the diaphragm connection member (6, 6 ') and the damper frame connection member (8, 8').)

1. A loudspeaker device (1) comprising: a frame (2), two oppositely directed diaphragms (3, 3 '), and two loudspeaker drivers, each having at least one magnetic driver (10, 10 ') for driving the two oppositely directed diaphragms (3, 3 ') in operation, further comprising:

a loudspeaker damper (5, 5 ') associated with the two oppositely directed diaphragms (3, 3'),

the loudspeaker damper (5, 5') comprises: a coil carrier (4, 4 ') arranged to be driven by the associated at least one magnetic driver (10, 10 '), a diaphragm connection member (6, 6 ') arranged to fixedly attach the diaphragm (3, 3 ') to the speaker damper (5, 5 '), and a damper frame connection member (8, 8 ') arranged to fix the speaker damper (5, 5 ') to the frame (2),

the loudspeaker damper (5, 5 ') further comprises a damper leg member (7, 7') arranged between the diaphragm connection member (6, 6 ') and the damper frame connection member (8, 8').

2. A loudspeaker device (1) as claimed in claim 1, wherein the damper leg member (7, 7') comprises an elastic material.

3. A loudspeaker device (1) according to claim 1 or 2, wherein said damper leg member (7, 7') is a flat bar.

4. A loudspeaker device (1) according to claim 1, 2 or 3, wherein the length of the damper leg member (7, 7 ') is larger than the shortest distance between the coil carrier (4, 4 ') and the damper frame connection part (8, 8 ').

5. A speaker apparatus (1) according to any one of claims 1-4, wherein the damper leg members (7, 7') are meander strips.

6. A loudspeaker device (1) according to any of claims 1-5, wherein the damper leg member (7, 7') is positioned in a corner region of the frame (2).

7. A loudspeaker device (1) according to any of claims 1-6, wherein the loudspeaker damper (5, 5') is mirror symmetric.

8. A loudspeaker device (1) according to any of claims 1-7, wherein the number of coil carriers (4, 4 ') of each loudspeaker damper (5, 5') is at least two.

9. A loudspeaker device (1) according to any of claims 1-8, wherein the two oppositely directed diaphragms (3, 3 ') are at a mutual distance equal to twice the operational excursion distance of the at least one motor driver (10, 10') when at rest.

10. A loudspeaker device (1) according to any of claims 1-9, wherein said loudspeaker dampers (5, 5 ') are located on two opposite sides of each of said two opposite directional diaphragms (3, 3').

11. A loudspeaker device (1) according to claim 10, wherein the combination of the diaphragm (3, 3 ') and the loudspeaker damper (5, 5') is a single piece.

Technical Field

The present invention relates to the field of loudspeakers. More particularly, the invention relates to a loudspeaker device comprising a frame, two oppositely directed diaphragms and two loudspeaker drivers.

Background

Loudspeakers are known, for example, from US patent publications US 6853734B 2, US 7366318B 2 and US 8311263B 2.

Disclosure of Invention

The present invention seeks to provide a loudspeaker device having as small an external dimension as possible, but having high performance and linearity.

According to the present invention, there is provided a loudspeaker device as defined above, wherein each loudspeaker driver has at least one magnetic driver for driving two oppositely directed diaphragms in operation. The speaker apparatus further comprises a speaker damper associated with each of the two oppositely directed diaphragms, the speaker damper comprising: a coil carrier arranged to be driven by an associated at least one magnetic driver, a diaphragm connection member arranged to fixedly attach the diaphragm to the loudspeaker damper, and a damper frame connection member arranged to fix the loudspeaker damper to the frame. The speaker damper further includes a damper leg member disposed between the diaphragm connecting member and the damper frame connecting member.

Drawings

The invention will be discussed in more detail below with reference to the accompanying drawings, in which

Fig. 1A and 1B show a perspective view and a cross-sectional view of a dual cone speaker apparatus, respectively.

Fig. 2 shows a perspective view of an embodiment of a loudspeaker device according to an embodiment of the invention.

Fig. 3 to 5 show a perspective view, a sectional view and a detailed view, respectively, of parts of a loudspeaker device relating to another embodiment of the invention.

Detailed Description

The invention will be explained in detail with reference to some drawings, which are only intended to illustrate embodiments of the invention and not to limit the scope. The scope of the invention is defined by the appended claims and their technical equivalents. That is, it will be understood by those skilled in the art that features, components, elements, etc. explicitly used to explain the present invention may be replaced by technically equivalent elements, unless otherwise specified. Furthermore, individual features of different embodiments may be combined, unless such a combination is not physically possible, even if not explicitly shown in the drawings or explained in the specification.

The invention will be discussed in more detail below with reference to some drawings.

The examples and embodiments described herein are intended to be illustrative, not limiting. Those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. Any reference signs placed between parentheses in the claims shall not be construed as limiting the scope of the claims. Items described as separate entities in the claims or in the specification may be implemented as single or multiple hardware items incorporating the features of the described items.

It is to be understood that the invention is solely limited by the appended claims and their technical equivalents. In this document and in its claims, the verb "to comprise" and its conjugations is used in its non-limiting sense to mean that items following the word are included, without excluding items not specifically mentioned. Furthermore, reference to an element by the indefinite article "a" or "an" does not exclude the possibility that more than one of the recited element is present, unless the context clearly requires that there be one and only one of the recited elements. The indefinite article "a" or "an" thus usually means "at least one".

In loudspeakers conventionally using the dual opposing driver principle, the drivers are placed in a back-to-back orientation.

The benefit of this architecture is that the opposing drivers counteract the mechanical vibrations of the enclosure. Because of this cancellation, the housing is significantly less affected by the movement of the drive even though the housing is relatively light, less rigid and small relative to the drive. Disadvantageously, the footprint is at least twice the depth of the same drive.

Converging the drivers is a way to reduce the minimum volume required for a loudspeaker design, as described for example in the applicant's not yet published patent application NL1042617, the content of which is incorporated herein by reference. Converging at opposite drivesAnd the magneto is in the same plane, the second suspension of the damper of the electrodynamic loudspeaker ("bounce") does not fit between the two transducers because the opposing drivers are in a rest position and because of the physical contraction when deflected inward, the bounces of the opposing drivers will intersect. The elastic wave is a necessary part of the linear shift, and the linear shift is a necessary condition for reproducing a good quality sound. Because the opposing diaphragms meet at the maximum sound pressure level at the center of the speaker, the suspension cannot align with the diaphragms of the two opposing drivers because they will collide.

In fig. 1A and 1B, which are copies of fig. 4A and 4B of the above-mentioned not-yet-published patent application, perspective and cross-sectional views of a loudspeaker device 300 are shown. The brackets 360, 360 'of the loudspeaker device 300 are integrally formed with collars 362, 362' attached to the diaphragms 312, 314, respectively. In the illustrated embodiment, the brackets 360, 360' are integrally formed with the diaphragms 312, 314.

The motors 330, 330 ' of the loudspeaker device 300 are arranged in pairs, wherein the coil former 336 of each pair of motors 330, 330 ' is connected to one of the brackets 360, 360 '. A pair of motors 330, 330' are arranged in an alternating manner around the frame 316. As shown, each diaphragm 312, 314 has two pairs of motors 330, 330', respectively. The motors 330, 330 ' arranged in pairs sharing the carriages 360, 360 ' may improve the efficiency of the movement of the diaphragms 312, 314 and may also reduce the mass of the carriages 360, 360 ' compared to an arrangement where four motors per diaphragm are evenly spare around the diaphragm and thus four carriages are required.

The loudspeaker device 300 as shown uses motors 330, 330 'with multiple magnets 332, 332'. The motors 330, 330 ' each comprise two magnets 332, 332 ' arranged to increase the excursion of the voice coil 334, 334 ' and hence of the diaphragm 312, 314.

The present invention relates to a loudspeaker device with a Distributed Transducer Suspension Cone (DTSC), an exemplary embodiment of which is shown in the perspective view of fig. 2. The loudspeaker device 1 comprises a frame 2 and two opposite diaphragms 3 (only one of which is visible in fig. 2). The loudspeaker damper 5 comprises a plurality of coil carriers 4, which plurality of coil carriers 4 is operatively connected to the moving coil part of a loudspeaker driver 10 (similar to the motors 330, 330' described above). In the exemplary embodiment shown, there are two loudspeaker dampers 5 for each diaphragm 3, each loudspeaker damper 5 having three coil carriers 4. It is noted that each diaphragm may implement a different number of loudspeaker dampers 5 and coil carriers 4, see also the alternative exemplary embodiments described below. Generally, in one set of embodiments, the number of coil carriers 4 in each loudspeaker damper 5, 5 is at least two. In another set of embodiments, the loudspeaker dampers 5 are located on two opposite sides of each of two opposite facing diaphragms 3.

The diaphragm 3 is connected to the loudspeaker damper 5 by means of diaphragm connection members 6 (only one of which is visible in fig. 2, but which are provided at two opposite sides of the diaphragm 3). Furthermore, the loudspeaker damper 5 comprises damper frame connection members 8 at both ends of the loudspeaker damper 5, said damper frame connection members 8 being used for connecting the loudspeaker damper 5 to frame connection elements 9, said frame connection elements 9 being part of the frame 2 and being realized for example as pins as shown in the embodiment of fig. 2. Further, the speaker damper 5 includes a damper leg member 7 positioned between the coil carrier 4 and the damper frame connecting member 8.

In general, according to the present invention, there is provided in various embodiments a speaker apparatus, the speaker apparatus 1 including: a frame 2, two oppositely directed diaphragms 3, 3 ' and two loudspeaker drivers, each loudspeaker driver having at least one magnetic driver 10, 10 ' for driving the two oppositely directed diaphragms 3, 3 ' in operation. The loudspeaker device 1 further comprises a loudspeaker damper 5, 5 ' associated with each of the two opposite directional diaphragms 3, 3 ', said loudspeaker damper 5, 5 ' comprising: a coil carrier 4, 4 ' arranged to be driven by an associated at least one magnetic driver 10, 10 ', a diaphragm connecting member 6, 6 ' arranged to fixedly attach the diaphragm 3, 3 ' to the loudspeaker damper 5, 5 ', and a damper frame connecting member 8, 8 ' arranged to fix the loudspeaker damper 5, 5 ' to the frame 2. The loudspeaker damper 5, 5 'further comprises a damper leg member 7, 7' arranged between the diaphragm connection member 6, 6 'and the damper frame connection member 8, 8'.

The configuration of the present embodiment of the loudspeaker device provides the loudspeaker device 1 with a linear compliant, flexible, resilient and flat loudspeaker damper 5, which loudspeaker damper 5 is connected between the frame 2 and the coil carrier 4 of the respective associated diaphragm 3 and allows the "bounce" of the two drivers/motors 10 to traverse the mid-plane of the loudspeaker device 1 without colliding. It is noted that like elements in the embodiments described herein with reference to the drawings refer to similar or identical elements that are represented by the reference numerals.

In a particular set of embodiments, the construction is utilized by making the combination of the diaphragm 3 and the loudspeaker damper 5 as a single piece (e.g. injection moulding). Fig. 3 to 5 show another exemplary embodiment of a DTSC type speaker apparatus 1 according to the present invention. In these figures, the frame 2 and the motor/driver element 10 of the loudspeaker device 1 are omitted to more clearly show the structural relationship and dimensions of the loudspeaker damper 5 and the directly associated components.

As shown in fig. 3, this embodiment clearly shows the presence of the (opposing) membranes 3, 3'. The associated elements of the lower membrane 3' are indicated by the primed reference numerals. It is clearly shown that a loudspeaker damper 5 is provided on each side of the diaphragm 3, and that in this example each loudspeaker damper 5 comprises two coil carriers 4. As is clear from the perspective view of fig. 3 and the sectional view of fig. 4, all the elements forming the loudspeaker damper 5 and their connections to the membrane 3 and the frame 2 are identical at each side of the membrane 3. In addition, the various elements are also the same for the opposite membrane 3'. In other words, the lower set of speaker dampers 5 'and the diaphragm 3' are identical to the upper set of speaker dampers 5 'and the diaphragm 3', but they are then turned upside down and rotated 90 degrees.

In all embodiments described herein, a further optional feature of embodiments of the invention is shown, namely that the loudspeaker dampers 5, 5 'are mirror symmetric (with respect to the midline of the associated diaphragm 3, 3'). This is advantageous in providing a suitable linear response of the loudspeaker device 1 and facilitates the manufacture of the loudspeaker damper 5, 5'. As also shown in these embodiments, two sets of loudspeaker dampers 5, 5 'may be attached to the frame 2, which allows to attach all sides of the loudspeaker dampers 5, 5' only at four locations in the frame 2, also positioning components of all loudspeaker dampers 5, 5 'within a small height of the loudspeaker device 1, due to the damper frame connections 8, 8' being offset in the diaphragm movement direction 9 by a distance of e.g. 3-4 mm. Furthermore, it allows all elements of the loudspeaker damper 5 that move during operation to be positioned outside the space between the opposing diaphragms 3, 3'.

Fig. 5 shows a detailed perspective view of a portion of the speaker apparatus 1 of fig. 3, showing that the speaker damper 5 includes a damper frame connecting member 8 (e.g., a ring), a damper leg member 7, and a diaphragm connecting member 6. The connection of the damper leg member 7 to the diaphragm connection part 6 is achieved using a leg attachment body 7a that allows force and movement to be transmitted appropriately. The form and material of the damper leg member 7 is such that an elastic, linear behavior is achieved in the up-down direction of the membrane 3. In one embodiment, for this purpose, the damper leg member (7, 7') comprises an elastic material.

For example, the damper leg member 7 may be realized as a strip-like element, wherein the width of the strip-like element is larger than the thickness, or even as a flat strip. Further, by implementing the damper leg member 7 as a meandering strip [ claim 5], i.e., in a mode of turning from a straight line between the damper frame connection member 8 and the leg attachment body 7 (or the coil bracket 4), the elasticity can be improved. In certain exemplary embodiments, the length of the damper leg member (7, 7 ') is greater than the shortest distance between the coil carrier (4, 4 ') and the damper frame connecting part (8, 8 ').

As another example, the damper leg body 7 may have a tangential connection with the coil carrier 4, initially pointing outward, then bending 90 degrees to the left towards the damper frame connection member 8, and then bending 135 degrees to the back, as shown in the embodiment of fig. 2, or alternatively, as shown in the embodiment of fig. 3-5, the damper leg body 7 may have a tangential connection with the coil carrier 4, initially pointing inward, then bending 180 degrees towards the damper frame connection member 8. By giving the inner space of the frame 2 of the loudspeaker device 1a shape which is generally formed as a rectangle, the corner areas outside the coil carrier 4 can be used for positioning the (meandering) damper leg members 7. In other words, in another embodiment, the damper leg members (7, 7') are positioned in corner regions of the frame (2).

As described above with reference to the embodiments shown in fig. 2 to 5, instead of the damper as a single object in the speaker device of the related art, the speaker device of the DTSC type has a plurality of individual suspension units (i.e., speaker dampers 5). Each individual suspension unit (speaker damper 5) is placed in the same circumferential area portion in the frame 2 as the magnet structure of the speaker apparatus 1, or outside the circumference of the (magnet) motor. In any case, the loudspeaker damper 5 is not located at least directly behind the diaphragms 3, 3' of the two opposing drivers. It is noted that the loudspeaker damper 5 (or damper suspension unit) may have many different geometries and materials, but the most important characteristics are:

the loudspeaker damper 5 (damper suspension unit) connects the diaphragm 3 (cone) to the frame 2 at a plurality of positions (i.e. via the frame connection element 9) to avoid non-linear movements,

when the drivers (i.e. the coil carrier 4 as described above) are offset towards each other from the rest position, the components of the loudspeaker damper 5 (the bouncing object) move through the same plane, and

the components of the loudspeaker damper 5 (the object of the bouncing wave) are not located directly behind the diaphragm 3, 3', but surround the diaphragm.

Relevant features of further exemplary embodiments are:

there are a minimum of 2 suspension units (i.e. speaker dampers 5) per driver/motor/coil, not at maximum.

Because of the material and geometry of the speaker damper 5, the speaker damper 5 is most flexible in the direction of driver/motor excursion and prevents non-linear driver/motor excursions.

The loudspeaker damper 5 may be fixed to the diaphragm 3, the coil or the coil carrier 4 (i.e. directly to the diaphragm 3 or directly to the coil or the coil carrier 4) at a position between the top and the bottom of the associated element.

Because of the distributed (more specifically DCST) configuration, the loudspeaker dampers 5 present in the loudspeaker device 1 are never all connected to the same coil, coil carrier 4 or same position at the diaphragm 3.

The distance between the rest positions of the diaphragms 3, 3' is at least twice as large as the unidirectional driver excursion of the motor driver 10. In other words, the two oppositely directed diaphragms 3, 3 'are at a mutual distance equal to twice the operational offset distance of the at least one motor drive 10, 10' when at rest. This ensures as high an amplitude as possible of the membrane 3, 3 'without any risk of the membrane 3, 3' or nearby components interfering with each other.

The two diaphragms 3, 3' are placed opposite each other, both fixed at the ends of a separate loudspeaker damper 5.

A separate loudspeaker damper 5 is situated beside the coil carrier 4 in the bounding box formed by the coil carrier 4. They may also be adjacent to the coil carrier 4, for example at the long sides of the frame 2, i.e. not in the corner regions of the frame 2 (as shown in the exemplary embodiments described with reference to fig. 2 to 5). It is only not allowed to place the loudspeaker damper 5 between the diaphragms 3, 3'.

The geometry of the membrane 3, 3' (or cone) is made in such a way that: between the membranes 3, 3 'there is a distance of maximum inward excursion of the two membrane 3, 3' combinations. For example, if both the top membrane 3 and the bottom membrane 3 'have a zero peak offset of distance x, respectively, the distance between the membranes 3, 3' is distance 2 x.

The invention has been described above with reference to a number of exemplary embodiments shown in the drawings. Modifications and alternative implementations of some parts or elements are possible and are included in the scope of protection defined in the appended claims.