Loudspeaker

Abstract

The present disclosure relates to a speaker comprising: a rear cavity made of metal and having a cavity body and a rear cavity flange; the base is provided with a base flange, and the base flange and the rear cavity flange are mutually fixed; the mask is made of metal, and the mask is installed on the base flange; wherein the mask and the rear cavity flange together surround the base flange in the circumferential direction and the axial direction.

Description

Technical Field

[0001] The present disclosure relates to a speaker. Background Art

[0002] This type of speaker is commonly used in indoor ceilings or suspended ceilings of buildings to play music, broadcasts, etc. For example, in the event of a fire, the central control room can send escape information through this type of speaker, so this type of speaker has a higher fire resistance rating.

[0003] Usually, the speaker has a speaker unit, which is supported on a base and accommodated in a rear cavity, and the cavity of the rear cavity is sealed and bonded to the base by an adhesive. However, at relatively extreme temperatures (overcooling or overheating), the adhesive may fail.

[0004] In addition, there is a "dog ear" fixture on the base, which is used to fix or clip the speaker to the ceiling. The traditional "dog ear" fixture is set on the screw, and the sharp end of the screw may injure the operator during assembly. When the fixture pops out of the screw, the screw is exposed, which further increases the risk of injury to the operator.

[0005] When the speaker is fixed on the ceiling, the lower surface of the base is exposed outside the ceiling, and a mask is usually set on the lower surface of the base to protect it. Most traditional solutions use magnetic masks, that is, multiple magnets are embedded in the lower surface of the base to attract the iron mask. However, this solution significantly increases the cost as the price of magnets rises. On the other hand, when a fire occurs, the magnets will lose their magnetism due to the magnetocaloric effect, which may cause the mask to fall off. In addition, in traditional solutions, the edge of the iron mask may scratch the inner ring of the base.

[0006] Furthermore, in the traditional solution, since the rear cavity needs to be bonded to the base and space needs to be provided on the base for the fixing device, the bottom surface of the rear cavity is significantly smaller than the base, so the sound volume of the rear cavity is also limited, which will affect the sound quality.

[0007] In addition, in the conventional solution, the base and the fixture are made of plastic, so they are prone to warping or aging after long-term use. In addition, when upgrading such speakers to speakers that meet higher fire resistance standards, the plastic used in the base and the fixture needs to be replaced, otherwise it will not meet the corresponding standards in terms of fire resistance. Utility Model Content

[0008] The present disclosure is directed to overcoming at least some of the above-mentioned problems in the prior art.

[0009] In order to solve the above technical problems, the present disclosure relates to a speaker, which includes:

[0010] The rear cavity is made of metal and has a cavity body and a rear cavity flange,

[0011] The base has a base flange, wherein the base flange and the rear cavity flange are fixed to each other.

[0012] The mask is made of metal, wherein the mask is mounted on the base flange,

[0013] The face shield and the rear chamber flange together surround the base flange in the circumferential direction and in the axial direction.

[0014] According to one or more embodiments of the present disclosure, the mask is fixed to the base flange by a snap connection, wherein the mask is made of non-ferromagnetic metal.

[0015] According to one or more embodiments of the present disclosure, the mask has a face mesh, a rim connected to the face mesh, and a flange extending radially inward from the rim, wherein the flange has a protrusion toward the face mesh, wherein the base flange has a groove adapted to the protrusion, wherein the protrusion is stuck in the groove when the mask is in the installed state.

[0016] According to one or more embodiments of the present disclosure, the rear cavity flange edge of the rear cavity flange has a first recess, and the base flange edge of the base flange has a second recess, wherein the circumferential extension dimension of the first recess is greater than the circumferential extension dimension of the second recess, wherein the rear cavity flange edge is flush with the base flange edge.

[0017] According to one or more embodiments of the present disclosure, the circumferential extension dimension of the flange is equal to or smaller than the circumferential extension dimension of the second recess, and the circumferential extension dimension of the flange is equal to or smaller than the difference between the circumferential extension dimensions of the first recess and the second recess, and the radial length of the flange is adapted to the radial depth of the first recess.

[0018] According to one or more embodiments of the present disclosure, the angular range corresponding to the circumferential extension of the flange is between 10° and 20°.

[0019] According to one or more embodiments of the present disclosure, a sealing device is provided between the base flange and the rear cavity flange, and the base flange and the rear cavity flange are fixed to each other by bolts.

[0020] According to one or more embodiments of the present disclosure, the speaker has a clamping device, which is made of metal, wherein a clamping space can be formed between the clamping device and the base flange.

[0021] According to one or more embodiments of the present disclosure, the cavity has three cut surfaces, and the speaker has three clamping devices, wherein the three clamping devices are respectively arranged on the three cut surfaces.

[0022] According to one or more embodiments of the present disclosure, the cavity has a cylindrical shape, and has a recess for accommodating the clamping device on a circumferential surface of the cylindrical shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, but are not intended to limit the present disclosure.

[0024] Figure 1 schematically shows an exploded view of a speaker according to one or more embodiments of the present disclosure,

[0025] Figure 2 schematically illustrates a speaker mask according to one or more embodiments of the present disclosure,

[0026] Figure 3 Schematically illustrating a base of a speaker according to one or more embodiments of the present disclosure,

[0027] Figure 4 schematically illustrates an installation state of a speaker according to one or more embodiments of the present disclosure,

[0028] Figure 5 A speaker according to one or more embodiments of the present disclosure is schematically shown. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] The present disclosure provides a loudspeaker, which includes: a rear cavity, which is made of metal and has a cavity and a rear cavity flange; a base, which has a base flange, wherein the base flange and the rear cavity flange are fixed to each other; a mask, which is made of metal, wherein the mask is mounted on the base flange; wherein the mask and the rear cavity flange surround the base flange in the circumferential direction and the axial direction. Specifically, in the present disclosure, the mask and the rear cavity flange surround the base flange in the circumferential direction and the axial direction, which means that the rear cavity flange basically completely covers the base flange on one side of the axial direction, except that the section of the flange on the base flange for supporting the mask will be exposed (which will be explained in detail below), and the mask completely covers the base flange on the other side of the axial direction and wraps the base flange in the circumferential direction. Compared with the loudspeaker in the prior art, the loudspeaker of the present disclosure realizes a full metal shell, in other words, the space surrounding the base usually made of plastic is formed by the metal mask and the metal rear cavity, thereby meeting the requirements of the relevant standards in terms of fire protection level, without the need to replace the base material in the prior art with a material with a higher fire resistance standard. Therefore, the design disclosed in the present invention changes the previous traditional design and provides a basis for subsequent improvements.

[0032] Another aspect of the present disclosure relates to a mask, wherein the mask is preferably fixed to the base flange by a snap connection. Compared with the traditional magnetic fixation, the snap connection saves the expensive magnets and simplifies the positioning of the magnets on the base, and also provides a simpler assembly. In addition, the snap connection also strengthens the protection of the base. The specific embodiments of the snap connection will be described in detail below with reference to the accompanying drawings.

[0033] In addition, through the design of the base flange and the rear cavity flange, for example, a sealing device is provided between the base flange and the rear cavity flange, and the base flange and the rear cavity flange are fixed to each other by bolts, the adhesive connection commonly used between the base and the rear cavity in the prior art is avoided, so that the stability under extreme temperatures is improved. In addition, through the design of the base flange and the clamping device, compared with the traditional design, the space of the base flange is reserved for the rear cavity, so that the volume of the rear cavity is increased, so the sound volume is increased and better sound quality is achieved in the same installation space.

[0034] Figures 1 to 5 A loudspeaker according to the present disclosure is shown, in which the loudspeaker 10, the back cavity 12, the cavity 14, the back cavity flange 16, the base 18, the base flange 20, the mask 22, the clamping device 24, the sealing gasket 26, the bolt 28, the grille 30, the ring edge 32, the flange 34, the protrusion 36, the groove 38, the first recess 40, the second recess 42, the ceiling 44, the cut surface 46, the clamping space 48, the recess 50, the section 52, and the axis x can be seen as a whole.

[0035] It should be noted that Figures 1 to 5Only features related to the present disclosure are shown, while conventional structures such as speaker units are omitted. In addition, the clamping device 24 is also shown only in a modular manner, and a conventional clamping device can be used if the defined features of the present disclosure are met.

[0036] Figure 1 An exploded view of a loudspeaker 10 according to one or more embodiments of the present disclosure is shown, wherein the exploded direction of the exploded view or the direction of the axis x is defined as the axial direction, and the direction around the axial direction is defined as the circumferential direction. Figure 1 In the figure, the rear chamber 12 can be seen, which has a cylindrical chamber body, and the cylindrical chamber body 14 has three rectangular sections 46 that are approximately perpendicular to the rear chamber flange 16, and the clamping devices are arranged on the sections 46 as shown by the arrows. Only two modular clamping devices 24 can be seen in the view, but there are three clamping devices 24 in this embodiment. In addition, the rear chamber flange 16 is formed at the lower end of the chamber body 14, and the rear chamber flange 16 has a circular shape.

[0037] also, Figure 1 The base 18 is shown, and the base 18 has a base flange 20, and the base 18 is used to support conventional structures such as speaker units, which are not shown here for the sake of clarity. The base flange 20 has a circular shape, and the diameter of the base flange 20 is substantially equal to the diameter of the rear cavity flange 16. In the present disclosure, "substantially" means that the deviation of the corresponding size is within 5%. A sealing device is provided between the rear cavity flange 16 and the base flange 20, which can be a sealing gasket 26. The base flange 20 and the rear cavity flange 16 are connected by Figure 1 The screws 28 shown are fixed to each other. Here, the screws 28 are preferably selected as metric screws 28.

[0038] also, Figure 1 The mask 22 is shown, which can be mounted on the base flange 20 from below. Thus, the mask 22 first protects the base 18 from below, and the mask 22 also surrounds the base flange 20 in the circumferential direction, and the mask 22 and the rear cavity flange 16 together form an enclosed space, thus surrounding the base flange 20 in the circumferential and axial directions at the same time. In other words, the rear cavity 12 and the mask 22 surround the base 18 and the speaker unit fixed on the base 18, so the speaker 10 has a full metal shell to meet a higher fire protection level, as well as higher stability and strength.

[0039] Figure 2 The face mask 22 of the loudspeaker 10 according to one or more embodiments of the present disclosure is schematically shown, and the face mask 22 has a face grille 30, a ring edge 32 connected to the face grille 30, and a flange 34 extending radially inward from the ring edge 32. As can be seen in the partial enlarged view, the flange 34 has a protrusion 36 facing the face grille 30. Figure 2The mask 22 is shown to have eight flanges 34, but the number can be between 4 and 12. In addition, the circumferential extension of the flange 34 corresponds to an angle range of between 10° and 20°. Because the flange 34 needs to first pass over the second notch 42 on the base flange 20 when installing the mask 22, and then the mask 22 needs to be screwed so that the flange 34 is completely stuck on the base flange 20, the above angle range also means the required screwing angle. Further preferably, the circumferential extension of the flange 34 corresponds to an angle of 15°, and then the mask 22 is screwed 15° to complete the installation.

[0040] Figure 3 The base 18 of the loudspeaker 10 according to one or more embodiments of the present disclosure is schematically shown. The base flange edge of the base flange 20 has second recesses 42, and eight second recesses 42 are shown here to correspond to the number of flanges 34 of the mask 22. The base flange 20 also has a section 52 adjacent to the second recess 42, which is used to support the flange 34 of the mask 22 in the installed state. In addition, it can be seen in the enlarged view that the base flange 20 has a groove 38, which is matched with the protrusion 36 on the flange 34 of the mask 22, that is, the protrusion 36 is stuck in the groove 38 when the mask 22 is installed.

[0041] Figure 4 The installation state of the speaker 10 according to one or more embodiments of the present disclosure is schematically shown, wherein the speaker 10 is clamped on the ceiling 44. Here, the ceiling 44 is only an example, and the speaker 10 can also be fixed on any plate-like structure. Here, the clamping device 24 is made of metal, wherein a clamping space 48 can be formed between the clamping device 24 and the base flange 20, as shown by the double-headed arrow between the clamping device 24 and the rear cavity flange 16 on the right. Compared with the dog-ear type fixing device in the prior art that is placed on the base flange 20, the clamping device 24 of the present disclosure is placed on the cut surface 46 of the cavity 14, so the base flange 20 can be used only to support the rear cavity flange 16.

[0042] It can be seen in the partial enlarged view that the rear cavity flange edge of the rear cavity flange 16 has a first notch 40, and the base flange edge of the base flange 20 has a second notch 42, wherein the circumferential extension dimension of the first notch 40 is greater than the circumferential extension dimension of the second notch 42. That is, in the partial enlarged view, since the first notch 40 and the second notch 42 partially overlap, the second notch 42 can be seen through the first notch 40, and the section 52 of the base flange 20 for supporting the flange 34 can be seen. Moreover, the circumferential extension dimension of the flange 34 is smaller than the circumferential extension dimension of the second notch 42 (so that the flange 34 can pass through the second notch 42), and the circumferential extension dimension of the flange 34 is equal to or smaller than the difference between the circumferential extension dimensions of the first notch 40 and the second notch 42, which means that the circumferential extension dimension of the section 52 of the base 18 for supporting the flange 34 is greater than the circumferential extension dimension of the flange 34. Therefore, a more reliable support is provided for the mask 22. It can also be seen in the partial enlarged view that the radial length of the flange 34 is adapted to the radial depth of the first recess 40. Therefore, the flange 34 is adjacent to or butted against the rear cavity flange 16 in the radial direction, and the edge of the flange 34 has a chamfer, and the corners of the remaining first recess 40 are matched in shape. In addition, the edge of the rear cavity flange is flush with the edge of the base flange. Therefore, the rear cavity flange 16 and the mask 22 basically completely surround the base flange 20, and only the second recess 42 is not covered in the axial direction, thereby providing sufficient fire protection and stability for the base 18 and the base flange 20.

[0043] In addition, regarding the material of the mask 22, the mask 22 is preferably made of non-ferromagnetic metal, such as aluminum. Compared with conventional technology, the mask 22 does not need to be fixed by magnetic attraction, and provides better fire resistance and stability. Of course, in the framework of the present disclosure, the mask 22 can also be made of iron materials, such as stainless steel, so there is no special restriction on the material itself. In addition, the clamping device 24 of the speaker 10 is also preferably made of metal. Although the metal back cavity 12 and the mask 22 have achieved the purpose of protecting the internal base 18 and the speaker unit, the metal clamping device 24 can meet a higher fire protection level, thereby preventing the speaker 10 from falling in extreme cases.

[0044] In addition, the design of the cavity 14 and the rear cavity flange 16 of the rear cavity 12 of the present disclosure also improves the sound volume. Figure 4 In the illustrated embodiment, the projected area of ​​the cavity 14 on the base flange 20 may account for about 70%. Therefore, under the same specifications, the sound volume of one or more embodiments of the present disclosure is increased by about 12%.

[0045] Figure 5 A loudspeaker 10 according to one or more embodiments of the present disclosure is schematically shown. Figure 5The cavity 14 of the rear cavity 12 shown in the figure no longer has the cut surface 46 as in one or more embodiments, but retains a relatively complete cylindrical shape, and has a recess 50 on the circumference of the cylindrical shape for accommodating the clamping device 24, where the clamping device 24 is also schematically shown, and the base 18 and the mask 22 in the one or more embodiments can be the same as in one or more embodiments. In this embodiment, the projected area of ​​the cavity 14 on the base flange 20 can account for about 80%, so under the same specifications, the sound volume of one or more embodiments of the present disclosure increases by about 38%.

[0046] Therefore, the technical solution disclosed in the present invention realizes a full metal shell as a whole, eliminates the use of adhesives, reduces assembly complexity and can avoid operator injuries, while improving the sound volume, fire resistance and stability.

[0047] The utility model can be implemented in the following ways:

[0048] Item 1: A speaker 10, comprising:

[0049] The rear cavity 12 is made of metal and has a cavity 14 and a rear cavity flange 16.

[0050] The base 18 has a base flange 20, wherein the base flange 20 and the rear cavity flange 16 are fixed to each other.

[0051] The mask 22 is made of metal, wherein the mask 22 is mounted on the base flange 20.

[0052] The cover 22 and the rear flange 16 together surround the base flange 20 in the circumferential direction and in the axial direction.

[0053] Item 2: In the loudspeaker 10 described in Item 1, the cover 22 is fixed to the base flange 20 by a snap connection, wherein the cover 22 is made of non-ferromagnetic metal.

[0054] Item 3: According to the loudspeaker 10 described in Item 1 or 2, the mask 22 has a mesh 30, a rim 32 connected to the mesh 30, and a flange 34 extending radially inward from the rim 32, wherein the flange 34 has a protrusion 36 facing the mesh 30, wherein the base flange 20 has a groove 38 adapted to the protrusion 36, wherein the protrusion 36 is stuck in the groove 38 when the mask 22 is in the installed state.

[0055] Item 4: In the loudspeaker 10 described in any one of Items 1 to 3, the rear cavity flange edge of the rear cavity flange 16 has a first recess 40, and the base flange edge of the base flange 20 has a second recess 42, wherein the circumferential extension dimension of the first recess 40 is greater than the circumferential extension dimension of the second recess 42, and wherein the rear cavity flange edge is flush with the base flange edge.

[0056] Item 5: In the speaker 10 described in any one of Items 1 to 4, the circumferential extension dimension of the flange 34 is equal to or smaller than the circumferential extension dimension of the second recess 42, and the circumferential extension dimension of the flange 34 is equal to or smaller than the difference between the circumferential extension dimensions of the first recess 40 and the second recess 42, and the radial length of the flange 34 is adapted to the radial depth of the first recess 40.

[0057] Item 6: In the loudspeaker 10 according to any one of Items 1 to 5, the angle corresponding to the circumferential extension of the flange 34 is in a range of 10° to 20°.

[0058] Item 7: In the loudspeaker 10 according to any one of items 1 to 6, a sealing device is provided between the base flange 20 and the rear chamber flange 16 , and the base flange 20 and the rear chamber flange 16 are fixed to each other by bolts 28 .

[0059] Item 8: The loudspeaker 10 according to any one of Items 1 to 7, wherein the loudspeaker 10 has a clamping device 24 , the clamping device 24 being made of metal, wherein a clamping space 48 can be formed between the clamping device 24 and the base flange 20 .

[0060] Item 9: The loudspeaker 10 according to any one of Items 1 to 8, characterized in that the cavity 14 has three cut surfaces 46, wherein the clamping devices 24 are respectively arranged on the three cut surfaces 46; or

[0061] Item 10: The loudspeaker 10 according to any one of Items 1 to 9, characterized in that the cavity 14 has a cylindrical shape, and has a recess 50 for accommodating the clamping device 24 on a circumferential surface of the cylindrical shape.

[0062] The above is an explanation of the present disclosure and should not be considered as a limitation thereof. Although several exemplary embodiments of the present disclosure are described, it will be readily appreciated by those skilled in the art that many modifications may be made to the exemplary embodiments without departing from the novel teachings and advantages of the present disclosure. Therefore, all such modifications are intended to be included within the scope of the present disclosure as defined in the claims. It should be understood that the above is an explanation of the present disclosure and the present disclosure should not be considered to be limited to the specific embodiments disclosed, and modifications to the disclosed embodiments and other embodiments are intended to be included within the scope of the present disclosure.

Claims

1. A loudspeaker, characterized in that: The speaker includes: The rear cavity is made of metal and has a cavity body and a rear cavity flange, The base has a base flange, wherein the base flange and the rear cavity flange are fixed to each other. The mask is made of metal, wherein the mask is mounted on the base flange, The face shield and the rear chamber flange together surround the base flange in the circumferential direction and in the axial direction.

2. The loudspeaker according to claim 1, characterized in that The face shield is fixed to the base flange via a snap connection, wherein the face shield is made of a non-ferromagnetic metal.

3. The loudspeaker according to claim 2, characterized in that The mask comprises a mesh, an annular edge connected to the mesh, and a flange extending radially inward from the annular edge, wherein the flange has a protrusion toward the mesh, wherein the base flange has a groove adapted to the protrusion, wherein the protrusion is stuck in the groove when the mask is in the installed state.

4. The loudspeaker according to claim 3, characterized in that The rear cavity flange edge of the rear cavity flange has a first notch, and the base flange edge of the base flange has a second notch, wherein the circumferential extension dimension of the first notch is greater than the circumferential extension dimension of the second notch, wherein the rear cavity flange edge is flush with the base flange edge.

5. The loudspeaker according to claim 4, characterized in that The circumferential extension of the flange is equal to or smaller than the circumferential extension of the second recess, and the circumferential extension of the flange is equal to or smaller than the difference between the circumferential extensions of the first recess and the second recess, and the radial length of the flange is adapted to the radial depth of the first recess.

6. The loudspeaker according to claim 5, characterized in that The angular range corresponding to the circumferential extension of the flange is between 10° and 20°.

7. The loudspeaker according to claim 1, characterized in that A sealing device is arranged between the base flange and the rear cavity flange, and the base flange and the rear cavity flange are fixed to each other by bolts.

8. The loudspeaker according to claim 1, characterized in that The loudspeaker has a clamping device which is made of metal, wherein a clamping space can be formed between the clamping device and the base flange.

9. The loudspeaker according to claim 8, characterized in that The cavity has three cut surfaces, and the loudspeaker has three clamping devices, wherein the three clamping devices are respectively arranged on the three cut surfaces.

10. The loudspeaker according to claim 8, characterized in that The cavity has a cylindrical shape and has a recess for accommodating the clamping device on a circumferential surface of the cylindrical shape.

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