Back-to-back loudspeaker

Abstract

The utility model provides a back-to-back horn which comprises a whole machine shell, a horn sound box is installed in the whole machine shell, a back-to-back horn is installed in the horn sound box, and sound outlet holes are formed in the top face and the side face of the whole machine shell. The top face sound outlet holes of the whole machine shell are located in the lower right portion of the top face, the top face sound outlet holes are round sound outlet holes arranged in a rectangular array mode, the side face sound outlet holes are long-strip-shaped sound outlet holes, and when the loudspeaker box is installed in the whole machine shell, the back-to-back loudspeaker sounding part is aligned with the top face sound outlet holes and the side face sound outlet holes. According to the back-to-back loudspeaker, under the condition that a high-pitch unit is omitted, the holes are additionally formed in the front face or the back face of the back-to-back loudspeaker to achieve high-frequency response, the application cost can be reduced when the whole machine is used, different whole machine shells can be used in different application situations in the implementation process, and different use requirements can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, and more specifically to a back-to-back loudspeaker. Background Art

[0002] A speaker is a conversion device that converts electrical energy into sound. When different electronic energies are transmitted to the coil, the coil generates an energy that interacts with the magnetic field of the magnet. This interaction causes the paper plate to vibrate. Because the electronic energy changes at any time, the coil of the speaker will move forward or backward, so the paper plate of the speaker will move with it. This action causes the density of the air to change and produce sound. In the prior art, when the speaker is fixed to the shell, the speaker is generally bonded to the shell by gluing. However, since the speaker is fixed by gluing, the glue will age after the speaker is used for a long time, which makes it easy for the speaker to fall off.

[0003] In view of the above problems, in the prior art, after the speaker is used for a long time, the glue will age and easily cause the speaker to fall off. After a lot of searches, a new speaker with patent number CN210143107U was found, which includes a speaker body, a fixing frame, and a "cross"-shaped bracket. Each support arm of the bracket is slidably connected with a block that can slide along the length direction of the corresponding support arm. Each block is provided with a hook portion for engaging with the outer edge of the speaker body at one end away from the support arm. A locking structure is provided between each block and the corresponding support arm, and an assembly hole is provided on the outer end of each support arm. However, the technical solution provided by the patent has the following problems:

[0004] The speaker needs to be used with a tweeter during use, which will increase the application cost and make the cost of the entire application process relatively high. Utility Model Content

[0005] The utility model aims to solve the technical problems raised by the above-mentioned background technology and provides a back-to-back speaker. By adding openings on the front or back of the back-to-back speaker, high-frequency response can be achieved, thereby reducing application costs.

[0006] To achieve the above object, the utility model provides the following technical solution: a back-to-back speaker, comprising: a whole shell, a mounting component installed in the whole shell, a speaker box installed in the mounting component, a back-to-back speaker installed in the speaker box, and sound holes are opened on the top and side surfaces of the whole shell;

[0007] The sound outlet holes on the top surface of the whole machine housing are located at the lower right side of the top surface. The sound outlet holes on the top surface are circular sound outlet holes arranged in a rectangular array, and the sound outlet holes on the side surfaces are long strip sound outlet holes. When the speaker box is installed in the whole machine housing, the back-to-back speaker sounding parts are aligned with the top surface sound outlet holes and the side sound outlet holes.

[0008] A further preferred solution is that a mounting cavity is defined in the whole machine housing, the mounting cavity has an assembly opening formed on one end surface of the whole machine housing, and a strip mounting block is provided on the inner wall at the rear end of the whole machine housing in the mounting cavity.

[0009] A further preferred solution: the whole housing has another way of providing sound holes, that is, long strip sound holes are provided on the right side and side of the bottom of the whole housing, and the side of the whole housing with the sound holes is an arc-shaped surface.

[0010] A further preferred solution: in one of the installation methods, the speaker speaker is provided with a mounting component at the bottom, the mounting component is a box-shaped shell with openings on the top surface and one end side, and a plurality of hollow cylindrical protrusions are provided on the inner wall of the bottom of the mounting component, and the inner wall of the cylindrical protrusions is threaded.

[0011] A further preferred solution: a rectangular groove is provided on the right side of the speaker box end, a back-to-back speaker is installed in the rectangular groove, and the speaker box is on the right side, that is, a small rectangular groove is provided on the right side of the back-to-back speaker, the rectangular groove is opposite to the top or bottom sound hole, and the small rectangular groove is opposite to the side sound hole.

[0012] A further preferred solution: the back-to-back speaker has two groups of sound-emitting parts.

[0013] Beneficial effects:

[0014] The utility model can achieve high-frequency response by adding openings on the front or back of the back-to-back speaker without the tweeter, which can reduce the application cost when the whole machine is used; and the utility model can use different whole machine casings in different application scenarios during implementation, which can meet different usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is one of the overall structural schematic diagrams of the utility model.

[0016] Figure 2 This is one of the exploded views of the present utility model.

[0017] Figure 3 This is the second schematic diagram of the overall structure of the utility model.

[0018] Figure 4 This is the second exploded view of the utility model.

[0019] Figure 5This is a schematic diagram of the speaker box structure of the utility model.

[0020] Figure 6 It is a flow chart of the application of the utility model.

[0021] Figure 1-6 Middle: 1. Whole machine casing; 2. Installation parts; 3. Speaker box; 4. Back-to-back speaker body. DETAILED DESCRIPTION

[0022] The following will be combined with the attached embodiment of the present utility model Figure 1-Figure 6 , clearly and completely describe the technical solutions in the embodiments of the utility model.

[0023] See also Figure 1-6 The embodiment of the utility model provides a back-to-back speaker, comprising: a whole housing 1, a speaker box 3 is installed in the whole housing 1, a back-to-back speaker 4 is installed in the speaker box 3, and sound outlet holes are opened on the top and side surfaces of the whole housing 1;

[0024] The sound holes on the top surface of the whole machine housing 1 are located at the lower right side of the top surface. The top surface sound holes are circular sound holes arranged in a rectangular array, and the side sound holes are long strip sound holes. When the speaker sound box 3 is installed in the whole machine housing 1, the sound-producing parts of the back-to-back speakers 4 are aligned with the top surface sound holes and the side sound holes. When the back-to-back speakers 4 are working, high-frequency response is achieved through the cooperation of the top sound holes and the side sound holes, so there is no need to use a tweeter unit, thereby reducing the application cost.

[0025] In the embodiment of the utility model, an installation cavity is defined in the whole machine housing 1, and an assembly opening is formed on one end surface of the whole machine housing 1. A strip-shaped installation block is provided on the inner wall of the rear end of the whole machine housing in the installation cavity. When installing the installation component 2, the installation component 2 can be aligned with the assembly opening, the installation component can be slid into the installation cavity, and then the installation component 2 can be fixed on the installation block.

[0026] In the embodiment of the utility model, there is another way of providing sound holes in the whole machine casing 1, that is, long strip sound holes are provided on the right side and side of the bottom of the whole machine casing 1, and the side of the whole machine casing 1 with the sound holes is an arc-shaped surface. Different whole machine casings 1 are used in different application scenarios to meet different usage requirements.

[0027] In the embodiment of the utility model, a mounting component 2 is provided at the bottom of the speaker sound box 3 in one of the installation methods. The mounting component 2 is a box-shaped shell with an opening on the top surface and one end side surface, and a plurality of hollow cylindrical protrusions are provided on the inner wall of the bottom of the mounting component. The inner wall of the cylindrical protrusion is threaded, and the speaker sound box 3 can be fixed on the mounting component 2 by screws, and then the mounting component 2 is installed in the overall housing 1.

[0028] In the embodiment of the utility model, a rectangular groove is opened on the right side of the speaker sound box 3, and a back-to-back speaker 4 is installed in the rectangular groove. A small rectangular groove is opened on the right side of the speaker sound box 3, that is, on the right side of the back-to-back speaker 4, and the rectangular groove is opposite to the top or bottom sound outlet hole, and the small rectangular groove is opposite to the side sound outlet hole.

[0029] In the embodiment of the utility model, the back-to-back speaker 4 has two groups of sound-emitting parts. When working, the two groups of sound-emitting parts produce sound and cooperate with each other to achieve high-frequency response, so there is no need to use a tweeter unit.

[0030] Please refer to Figure 6 In the system application of the utility model, the side that emits sound from the front is used as a full-range unit, and the side that emits sound from the side is only used as a bass unit; the high-frequency part of the front sound unit is less attenuated and can be relatively completely retained, so it will be used as a full-range unit for practical purposes; the side sound unit will form a second resonance peak in the mid-high frequency part, and the high-frequency response will decay as the frequency increases, affecting the frequency response and distortion of the whole machine, so a low-pass filter or equalizer is added at the end of the post-processing link to eliminate the influence of the second resonance peak, and the signal of the low-frequency part is consistent with that of the front sound unit; because the larger vibration of the speaker unit when working basically occurs in the low-frequency part, and the mid-high frequency vibration is very small, the signals of the two speakers on the low-frequency part are consistent, retaining the characteristics and advantages of vibration cancellation of the double-sided speakers;

[0031] The low-frequency units that output sound from the front and the units that output sound from the side can also be separated into two links for separate debugging. For example, in the scenario of using a smart power amplifier, the following signal processing method can also be applied: add a low-pass filter or an equalizer or an equalizer to the side sound unit to eliminate the influence of the second resonance peak and high-frequency attenuation, while the signal of the low-frequency part is kept consistent with the positive sound unit as much as possible; if there is temperature control feedback in the system, the higher one needs to be used to control the two units at the same time to avoid different low-frequency signal processing due to different temperature rises, which may cause vibration.

[0032] Working principle: the back-to-back speaker 4 starts to work after the power is turned on. When the back-to-back speaker 4 is producing sound, a high-frequency response is achieved by adding openings on the front or back of the back-to-back speaker. There is no need to use a tweeter when the whole machine is in use.

Claims

1. A back-to-back speaker, comprising: The whole machine housing (1) is characterized in that: a speaker box (3) is installed in the whole machine housing (1), a back-to-back speaker (4) is installed in the speaker box (3), and sound outlet holes are opened on the top surface and side surfaces of the whole machine housing (1); The sound outlet holes on the top surface of the whole machine housing (1) are located at the lower right of the top surface, the sound outlet holes on the top surface are circular sound outlet holes arranged in a rectangular array, and the sound outlet holes on the side surfaces are long strip sound outlet holes. When the speaker box (3) is installed in the whole machine housing (1), the sound-producing parts of the back-to-back speakers (4) are aligned with the top surface sound outlet holes and the side surface sound outlet holes.

2. The back-to-back speaker according to claim 1, characterized in that: The whole machine housing (1) defines an installation cavity, wherein an assembly opening is formed on an end surface of the whole machine housing (1), and a strip-shaped installation block is arranged on the inner wall at the rear end of the whole machine housing in the installation cavity.

3. The back-to-back speaker according to claim 1, characterized in that: The whole machine housing (1) has another method of providing sound outlet holes, that is, long strip sound outlet holes are provided on the right side of the bottom and the side of the whole machine housing (1), and the side of the whole machine housing (1) on which the sound outlet holes are provided is an arc-shaped surface.

4. The back-to-back speaker according to claim 1, characterized in that: In one installation mode, the speaker box (3) is provided with a mounting component (2) at the bottom, the mounting component (2) is a box-shaped shell with an opening on the top surface and one end side surface, and a plurality of hollow cylindrical protrusions are provided on the inner wall of the bottom of the mounting component, and the inner wall of the cylindrical protrusions has threads.

5. The back-to-back speaker according to claim 1, characterized in that: A rectangular groove is provided on the right side of the speaker sound box (3), and a back-to-back speaker (4) is installed in the rectangular groove. A small rectangular groove is provided on the right side of the speaker sound box (3), that is, on the right side of the back-to-back speaker (4), and the rectangular groove is opposite to the top or bottom sound outlet hole, and the small rectangular groove is opposite to the side sound outlet hole.

6. The back-to-back speaker according to claim 1, characterized in that: The back-to-back speaker (4) has two groups of sound-emitting parts.

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