阅读说明：本技术 扩音装置 (Sound amplifying device ) 是由 伊尔卡·里萨宁 汤米·帕维莱宁 哈里·科斯基宁 于 2019-07-12 设计创作，主要内容包括：本发明设计一种新颖的扩音装置(100),其具有反射壳体(110),该反射壳体具有终止于壳体(110)的底部(111)上的反射端口(112)。该扩音装置还包括支架(120),其可拆卸式地连接在壳体(110)的底部(111)上,以便能在底部(111)与用于支撑扩音装置(100)的表面之间形成间隙(C)。(The present invention relates to a novel sound amplification device (100) having a reflex housing (110) with a reflex port (112) terminating on the bottom (111) of the housing (110). The loudspeaker device further comprises a stand (120) detachably attached to the bottom (111) of the cabinet (110) so as to form a gap (C) between the bottom (111) and a surface for supporting the loudspeaker device (100).)

1. A loudspeaker device (100) comprising:

a housing (110) comprising a reflective port (112) terminating on a substantially flat bottom (111) of the housing (110); and

a stand (120) detachably attached to a bottom (111) of the cabinet (110) to form a gap (C) between the bottom (111) and a surface for supporting the sound amplifying device (100).

2. Loudspeaker device (100) according to claim 1, wherein the housing (110) is substantially cubical.

3. Loudspeaker device (100) according to claim 1 or 2, wherein the housing (110) comprises a load-bearing structure consisting of wood or wood composite material, in particular MDF.

4. Loudspeaker device (100) according to any of the previous claims, wherein the enclosure comprises a plurality of reflection ports (112) arranged at the rim of the bottom (111).

5. Loudspeaker device (100) according to any of the previous claims, wherein the stand (120) is shaped to form a free space between the opening of the reflex port and the surface for supporting the loudspeaker device (100).

6. Loudspeaker device (100) according to any of the previous claims, characterised in that the stand (120) is a table top stand.

7. Loudspeaker device (100) according to any of the previous claims, wherein the stand (120) comprises a body (121), wherein:

the body is more elastic than the housing (110), or the damping coefficient of the body is greater than the damping coefficient of the housing (110);

the body is composed of rubber or a composite or elastomer comprising rubber; or

The body is more elastic than the housing (110), or has a damping coefficient greater than that of the housing (110), and is composed of rubber or a composite material containing rubber or an elastomer.

8. Loudspeaker device (100) according to any of the previous claims, wherein the stand (120) is configured to create a space (150) between the body (121) of the stand (120) and the bottom (111) of the cabinet (110).

9. A loudspeaker device (100) according to claim 9, wherein the spacing (150) is between 2mm and 20mm, preferably between 4mm and 10mm, more preferably 5 mm.

10. Loudspeaker device (100) according to any of the previous claims, wherein the loudspeaker device (100) is configured to reproduce sound in a response frequency range, the lower end of the response frequency range being higher than the natural frequency of the support (120).

11. Loudspeaker device (100) according to any of the previous claims, wherein the bottom (111) of the cabinet (110) and the stand (120) comprise mutually engageable connectors (122) for detachable connection.

12. Loudspeaker device (100) according to any of the preceding claims, wherein:

the bottom (111) of the housing (110) comprises at least one, preferably a plurality of threaded openings; and wherein

The bracket (120) includes at least one, and preferably a plurality of, corresponding threaded rods (122) configured to engage the threaded openings on the base.

13. Loudspeaker device (100) according to any of the preceding claims, wherein the stand (120) comprises a joint (123), preferably a plurality of joints (123), protruding from the upper surface of the body (121) of the stand (120) to create a space (150) between the body (121) of the stand (120) and the bottom (111) of the cabinet (110).

14. A loudspeaker device (100) according to claim 13, wherein:

the threaded rod (122) is formed in one piece with the joint (123);

the body (121) of the bracket (120) comprises a receiving opening for receiving the joint (123) by means of an inlay; and wherein

The joint (123) may be attached to the bottom (111) of the housing (110) first, and then the body (121) of the bracket (120) is attached to the joint (123).

15. Loudspeaker device (100) according to any of claims 1 to 13, wherein the stand (120) comprises a bolt, preferably a plurality of bolts, comprising a threaded rod (122), wherein the bolt is configured to be passable through the body (121) of the stand (120) and the joint (123) and to be connected into a threaded opening on the bottom of the housing (110).

16. Loudspeaker device (100) according to any of the preceding claims, wherein the body (121) of the stand (120) comprises a plurality of legs (126) and a mesh (125) connecting the legs (126) to the bottom (111) of the enclosure (110) so that they surround the opening of the reflex port.

17. Loudspeaker device (100) according to any of the preceding claims, wherein the gap (C) is at most 200mm, preferably at most 100mm, more preferably at most 50mm, such as between 30mm and 40 mm.

18. Loudspeaker device (100) according to any of the previous claims, wherein the baffle (115) of the enclosure (110) is free of openings for reflection ports and comprises a waveguide (117), wherein the loudspeaker device (100) comprises a high frequency transducer (130) mounted at the waveguide (117).

19. Loudspeaker device (100) according to any of the previous claims, characterised in that the waveguide (117) extends over the entire width of the planar portion of the baffle (115).

Technical Field

The present invention relates to the field of sound reproduction. In particular, the present invention relates to a structure of a cabinet of a reflex speaker apparatus.

Background

A reflex loudspeaker housing is an advantageous configuration for achieving sound reproduction in low frequencies with a relatively compact housing. However, it has been found that achieving a balance between optimization of the smooth air flow in the reflex port and other performance of the loudspeaker device is difficult.

Disclosure of Invention

It is therefore an object of the present invention to provide a loudspeaker enclosure which does not require a compromise between the arrangement of the reflex ports and the overall performance of the loudspeaker, or at least which provides the public with an effective alternative to existing reflex loudspeakers.

The present invention proposes a novel sound amplification device having a reflex enclosure with a reflex port terminating at the bottom of the enclosure. The sound amplifying apparatus further comprises a stand detachably attached to the bottom of the cabinet so as to form a gap between the bottom and a surface for supporting the sound amplifying apparatus.

Preferably, the housing is substantially cubical.

Preferably, the housing comprises a load-bearing structure consisting of wood or wood composite material, in particular MDF.

Preferably, the housing comprises a plurality of reflective ports provided at a rim of the bottom.

Preferably, the stand is shaped to form a free space between the opening of the reflex port and a surface for supporting the loud-speaker device.

Preferably, the stand is a table top stand.

Preferably, the stent comprises a body, wherein: the body is more elastic than the housing or has a damping coefficient greater than that of the housing; the body is composed of rubber or a composite or elastomer comprising rubber; or the body is more elastic than the housing, or the body has a damping coefficient greater than that of the housing, and the body is composed of rubber or a rubber-containing composite or elastomer.

Preferably, the bracket is configured to create a space between the main body of the bracket and the bottom of the housing.

Preferably, the spacing is between 2mm and 20mm, preferably between 4mm and 10mm, more preferably 5 mm.

Preferably, the loudspeaker device is configured to reproduce sound in a response frequency range having a lower end value higher than the natural frequency of the support.

Preferably, the bottom of the housing and the bracket comprise inter-engageable connectors for detachable connection.

Preferably, the bottom of the housing comprises at least one, preferably a plurality of threaded openings; and wherein the bracket comprises at least one, preferably a plurality of corresponding threaded rods configured to engage with said threaded openings on said base.

Preferably, the bracket comprises a tab, preferably a plurality of tabs, projecting from an upper surface of the main body of the bracket to create a space between the main body of the bracket and the bottom of the housing.

Preferably, the threaded rod is formed integrally with the joint; the body of the holder includes a receiving opening for receiving the connector by means of an inlay; and wherein the tab may be attached to the bottom of the housing prior to the body of the holder being attached to the tab.

Preferably, the bracket comprises a bolt, preferably a plurality of bolts, comprising a threaded rod, wherein the bolt is configured to be passed through the body of the bracket and the joint and connected into a threaded opening on the bottom of the housing.

Preferably, the body of the stand comprises a plurality of legs and a mesh connecting the legs to the bottom of the housing so that they surround the opening of the reflective port.

Preferably, the gap is at most 200mm, preferably at most 100mm, more preferably at most 50mm, for example between 30mm and 40 mm.

Preferably, the baffle of the enclosure is free of openings for the reflection ports and comprises a waveguide, wherein the sound amplifying device comprises a high frequency transducer mounted at the waveguide.

Preferably, the waveguide extends over the entire width of the planar portion of the baffle.

The invention is defined by the features in the independent claims. Specific embodiments are defined in the dependent claims.

Considerable advantages are obtained with the aid of the novel solution described above. By providing a reflective port terminating on the bottom of the housing, the baffle of the housing need not be provided with an additional opening, whereby the edges of such an opening do not form a source of diffraction for the output of the transducer. In addition, by eliminating the opening of the reflective port from the baffle, the listener is not directly exposed to sound radiation or resonance from the reflective port. In addition, by eliminating the opening of the reflective port from the baffle, the listener is not directly exposed to sound radiation or resonance from the reflective port. Furthermore, the baffle may comprise a large waveguide for guiding the sound generated by the high frequency transducer, thereby improving directivity. The gap formed by the stand can lift the opening of the reflex port relative to the surface for supporting the loudspeaker device, thus allowing a free air flow to be generated in the reflex port. For installations other than desktop installations, the stand may be removed, for example, by hanging the loudspeaker from a wall via a separate bracket or other mounting accessory, wherein the bottom of the enclosure is clear, although without the stand.

Drawings

Some embodiments are described in more detail below with reference to the accompanying drawings, in which:

fig. 1 shows a front view of a loudspeaker device according to at least some embodiments of the invention;

fig. 2 shows an exploded view of the sound amplification apparatus of fig. 1; and is

Fig. 3 shows a bottom view of the loudspeaker device of fig. 1.

Detailed Description

As shown in fig. 1 to 3, one embodiment of the present invention proposes a sound amplifying device 100 with a reflection case 110. The housing 110 has a substantially rectangular body shape, i.e., has six panels connected to each other at substantially right angles. This shape is obviously not a strictly rectangular prism but resembles a traditional box-like housing. The corners may be rounded or chamfered (not shown), as shown in the drawings, or may be flat. The panels are also preferably substantially flat, or they comprise at least a planar portion. The case 110 may be made of a wooden material. According to one embodiment, the load bearing structure of the housing 110 may be constructed of wood. According to another embodiment, the load-bearing structure of the shell 110 may be constructed of a composite material having wood and filler. According to one embodiment, the load-bearing structure of the housing 110 may be constructed of fiberboard (e.g., MDF).

The panel may include a baffle 115, which baffle 115 is herein the front panel of the loudspeaker device and serves as a mounting point for the transducers 130, 140. The baffle 115 has a woofer opening 118 for receiving a low frequency transducer 140, which low frequency transducer 140 may be a woofer, mid frequency transducer, or a hybrid transducer for producing mid and low frequencies. The baffle 115 further comprises a waveguide 117 for receiving a high frequency transducer 130, which high frequency transducer 130 may be a high frequency loudspeaker or a hybrid transducer for generating high and medium frequencies. The waveguide 117 may be a concave surface, such as a cone, or a truncated cone having a circular or elliptical shape or other suitable shape. In fig. 1 and 2, the outer edges of the waveguide 117 are expressed as elliptical lines to simplify the lines into which the waveguide 117 is recessed relative to the front surface of the baffle 115. Preferably, the waveguide 117 is relatively large in order to be effectively pointed. It is particularly preferred that the waveguide 117 extends over the entire width of the planar portion of the baffle 115. In fig. 1 and 2, this is expressed by a vertical shape line adjacent to the waveguide 117 to show that the waveguide 117 extends to the round corner of the baffle 115.

The panel further comprises a first side 113 and a second side 114, which enclose the baffle 115 and are connected to the baffle 115 by a rounded right angle. The first side 113 and the second side 114 are parallel to each other and are substantially planar. The sides 113, 114 are connected to the top 116 and bottom 111 by rounded straight corners. The top 116 and bottom 111 are opposite each other, parallel to each other, and substantially planar. The bottom surface (i.e., bottom 111) is substantially flat, which means that the housing does not contain integral legs or brackets. Obviously, the bottom 111 may include rounded corners or a small curved shape, but the overall appearance of the bottom 111 of the housing 110 is flat. This in turn means that if the housing is placed on a support surface without the bracket 120 (described in detail below), the reflective port 112 (described in detail below) is partially or completely enclosed by the support surface. The rear portion 119 is an enclosure that interconnects the rear edges of the side portions 113, 114, top portion 116 and bottom portion 111. The rear portion 119 may be a substantially flat wall portion opposite the baffle and include terminals for connection to a power outlet, an acoustic signal inlet, and the like. The housing 110 may be covered by a continuous or discontinuous protective coating (e.g., an impact resistant coating).

As mentioned above, the housing 110 is a reflective housing, meaning that it includes at least one reflective port 112. The reflective port 112 is configured to terminate at the bottom 111 of the housing 110. This means that the opening of the reflection port is provided on the bottom 111. The reflex port 112 may comprise a particular tube or other channel structure within the housing, or it may comprise walls for cooperating with the adjacent side portions 113, 114 to form the reflex port 112. In the embodiment shown, the housing 110 has two reflective ports 112. One reflex port 112 is located adjacent to the first side portion 113 and the other reflex port 112 is located adjacent to the second side portion 114. Preferably, the reflective ports 112 are located at the edge of the bottom 111 of the housing 110 and, if applicable, are aligned with adjacent sides as shown.

The bracket 120 is attachable to and detachable from the bottom 111 of the housing. When connected, the stand 120 forms a gap C between the bottom 111 and a surface (e.g., a table top) for supporting the loudspeaker device 100. Thus, the stand 120 may be a desktop stand. This is distinguished from stands that are used to raise the loudspeaker by seven tenths of a meter relative to the ground. Such stands are usually ground stands. In contrast, according to one embodiment of the present invention, the bracket 120 may form a clearance C of up to 200 mm. According to a more particular embodiment, the clearance C is at most 100 mm. According to a more particular embodiment, the clearance C is at most 50 mm. According to a more particular embodiment, the clearance C is between 30mm and 40 mm. The embodiment shown has a clearance C of 36 mm. Such a gap C can balance stability and sufficient plenum space of the reflector port 112.

The stand 120 has a body 121, which is preferably resilient to isolate vibrations transmitted between the cabinet 110 and a surface for supporting the loudspeaker device 100. More specifically, it is preferable that the damping coefficient of the body 121 of the bracket 120 is greater than that of the housing 110. Thus, advantageously, the natural frequency of the support 120 is lower than the lower end of the response frequency range of the loudspeaker device 100. The lower end of the range may be considered herein as the lowest reproduced sound frequency, which is-3 dB relative to the peak. Thus, a flexible material is preferred for body 121. Such materials include rubber, rubber-containing composites, and a wide variety of elastomers. The body 121 may be reinforced from a stock material such as steel, carbon fiber, or other rigid filler or structure.

The body 121 is shaped to surround the opening of the reflex port to form a free space between the opening of the reflex port and a surface for supporting the loudspeaker device 100. That is, the body 121 does not extend between the reflex port 112 and a surface for supporting the loudspeaker device 100. To facilitate the creation of free space, body 121 may include mesh 125 (i.e., a central portion), mesh 125 being positioned between the openings of the reflective ports when bracket 120 is attached to housing 110. A plurality of legs 126 are provided at the outermost corners of mesh material 125, legs 126 also lifting mesh material 125 relative to the surface for supporting the microphone. According to the embodiment shown, the stand 120 has four legs 126, although fewer legs (e.g., three) may also be sufficient. Alternatively, the stand 120 may have a single leg, for example a cylindrical leg, however for stability it is preferred to provide a plurality of legs.

The connection between the bracket 120 and the housing 110 may be accomplished in a number of alternative ways. According to the embodiment shown, this connection can be realized in two stages. First, the joint 123 is coupled to the housing 110. For engagement with the holder 120, the bottom 111 of the housing 110 has a coupling shape which is designed to cooperate with a corresponding coupling shape provided on the holder 120. For example, the base 111 has a female connection shape and the stand 120 has a formula connection shape, but the reverse arrangement is also possible. According to the embodiment shown, the housing has a plurality of (in particular four) threaded openings provided in the corner regions of the substantially quadrangular bottom 111. Bracket 120 has a corresponding threaded rod 122, threaded rod 122 being designed to engage a threaded opening in base 111. In principle, a connection with only one threaded or otherwise shaped engagement portion would also be sufficient. In particular, the threaded stem 122 may be part of a bolt, or it may be formed integrally with the elastic collar, for example by a vulcanized connection. According to the embodiment shown, threaded rod 122 forms part of a joint 123, joint 123 having threaded rod 122 extending from an elastic body, which may be made of the same material as body 121 of bracket 120. The adapter 123 can be rotated in place by a threaded connection between the rod and the opening in the base 111. On the other hand, the joint 123 is inserted into a corresponding opening provided on the upper surface of the bracket (in particular the leg 126). Alternatively, if the joint 123 is not used, the bracket 120 may be fixed to the housing 110 only by bolts. However, the use of the joint 123 brings advantages. The recess in the body 121 of the holder 120 for receiving the tab is preferably shallow enough that the tab 123 protrudes relative to the upper surface of the holder 120. In this way, a space 150 may be formed between the body 121 of the stand 120 and the bottom 111 of the case 110. The spacing 150 also improves the isolation between the housing 110 and the surface used to support the loudspeaker device 100. The height of the spacing 150 may be between 2mm and 20mm, preferably between 4mm and 10mm, more preferably 5 mm. Alternatively, the tab 123 may extend the entire height of the body 121. The lower surface of body 121, particularly legs 126, may be sealed by a resilient covering 124 (e.g., a rubber pad) for covering any hard material that would otherwise be exposed. Such hard materials can be used, for example, for bolt heads. The cover 124 may also serve to further isolate the enclosure 110 from the support surface used to support the loudspeaker device 100. On the other hand, they may provide the additional fixing needed to overcome bass kickback that may be generated when mounted on an inclined surface.

When the stand 120 is mounted in place, the reflex port 112 can freely discharge the air flow toward the surface for supporting the loud-speaking device 100 (i.e., below the cabinet 110). The gap C is sufficient to allow free flow, wherein the lower end performance of the loudspeaker device is not compromised. In particular, the gap C can avoid sound radiation generated by the air flow of the reflection port and can reduce turbulence compared to when there is not enough gap. When the stand 120 is removed, the loudspeaker device 100 may be connected to the ground stand by a threaded insert (not shown) on the bottom, or by a threaded insert on the side for connection to the ground stand by a bracket (not shown, such as a C-bracket). Such a bracket can also be used for ceiling mounting by means of suspension rods. Alternatively, the loudspeaker device 100 may be connected to the wall mount by a threaded insert (not shown) on the rear.

It is to be understood that the disclosed embodiments of this invention are not limited to the particular structures, process steps, or materials described herein, but may extend to equivalents thereof recognized by those skilled in the art. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.

In this context, a plurality of objects, structures, constituent elements and/or materials may be presented in a common list for convenience. However, these lists should be construed as though each element in the list is individually capable of being treated as a separate unique element. Thus, each element of such a list should not be construed as a practical equivalent of any other element of the same list solely based on the presentation of each element in a common group without indications of conflict. Additionally, various embodiments and examples of the present invention may also relate to alternatives to the various components. It should be understood that these embodiments, examples and alternatives are not to be considered as actual equivalents of each other, but rather as independent and autonomous manifestations of the invention.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In this document, numerous specific details are set forth (e.g., examples of lengths, widths, shapes, etc.) in order to provide a thorough understanding of embodiments of the present invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention.

While the embodiments described above illustrate the principles of the invention in one or more particular applications, it will be understood by those skilled in the art that numerous modifications in form, usage and details of implementation can be made without the exercise of inventive faculty, and without departing from the principles and concepts of the invention. Accordingly, the invention is not intended to be limited except as by the appended claims.

The verbs "comprise" and "comprise" are used herein as open-ended definitions, neither excluding nor necessitating the presence of other unrecited features. The features listed in the dependent claims are freely engageable with each other, unless explicitly stated otherwise. In addition, it should be understood that the use of "a" or "an" (i.e., singular forms) herein does not exclude a plurality.

List of abbreviations

MDF medium density fiberboard

List of reference numerals