Loudspeaker capable of preventing shell vibration

Abstract

The utility model discloses a loudspeaker capable of preventing shell vibration. The loudspeaker comprises a loudspeaker main body; the diaphragm group is arranged on the loudspeaker main body, the diaphragm group comprises a vibrating diaphragm, a globe-top diaphragm arranged in the middle of the vibrating diaphragm and a breathable film arranged on the globe-top diaphragm, a plurality of breathable holes are formed in the globe-top diaphragm, the breathable film is used for covering the breathable holes, and gas can pass through the breathable film; the outer cover body is arranged on the membrane group, a plurality of sound holes are formed in the outer cover body, and the positions of the sound holes correspond to the positions of the air holes. According to the utility model, through the structure of the globe-roof film, the use strength can be improved, the internal air pressure can be balanced, part of air is discharged through the air vents, the impact force of airflow generated by the vibration of the sounding unit on the casing is greatly reduced, and the problem of casing vibration is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, in particular to a loudspeaker capable of preventing shell vibration. Background Art

[0002] Shell vibration is caused by the voice coil of the sound unit pushing the diaphragm to vibrate violently up and down, thereby pushing the air inside the shell to impact the back shell of the phone. If the rigidity of the back shell of the phone is not enough and cannot be increased, it will cause shell vibration, causing discomfort to the user when holding the phone. At present, the receiver of mobile phones generally uses a two-in-one unit with speaker and receiver functions, so the diaphragm amplitude of its unit is much larger than that of traditional receivers, which causes the back shell of such mobile phones to have shell vibration problems, affecting the user experience. Utility Model Content

[0003] The utility model aims to avoid the shortcomings of the prior art and provides a loudspeaker suitable for preventing shell vibration.

[0004] The utility model solves the technical problem by adopting the following technical solution: a loudspeaker for preventing shell vibration, comprising:

[0005] Speaker body;

[0006] A membrane group arranged on the speaker body, the membrane group includes a diaphragm, a dome membrane arranged in the middle of the diaphragm, and a breathable membrane arranged on the dome membrane, the dome membrane is provided with a plurality of breathable holes, the breathable membrane is used to cover the breathable holes, and the breathable membrane allows gas to pass through;

[0007] An outer cover body is arranged on the membrane group, and a plurality of sound outlet holes are arranged on the outer cover body, and the positions of the sound outlet holes correspond to the positions of the air holes.

[0008] In several embodiments, the speaker body includes a bracket and a sound-generating body disposed in the bracket, and the sound-generating body is connected to the dome membrane and is used to drive the movement of the dome membrane.

[0009] In several embodiments, the outer cover is disposed on a bracket, a gap exists between the outer cover and the dome membrane, a waterproof and breathable layer is disposed on the outer cover, the waterproof and breathable layer covers the sound outlet, and only gas can pass through the waterproof and breathable layer.

[0010] In several embodiments, the dome membrane includes two base layers, an inner core layer arranged between the two base layers, and an outer layer arranged outside the two base layers, the base layer includes a plurality of continuously arranged protrusions and recesses, the protrusions and recesses in the two base layers are located correspondingly and in opposite directions, and the air holes are arranged at positions corresponding to the recesses.

[0011] In several embodiments, the inner core layer and the outer layer are foamed filling materials, the dome film is injection molded in a mold, a positioning protrusion is provided on the mold, the positioning protrusion forms a positioning depression in the outer layer, and holes are punched at the positioning depression to form air holes.

[0012] The beneficial effects of the utility model are:

[0013] The utility model can improve the use strength through the structure of the ball top membrane, and can balance the internal air pressure at the same time, release part of the air through the air holes, greatly reduce the impact force of the airflow generated by the vibration of the sound unit on the casing, and solve the problem of casing vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are for illustrative purposes only of selected embodiments and do not represent all possible implementations, and should not be considered to limit the scope of the present invention.

[0015] Figure 1 The overall structure of the loudspeaker for preventing shell vibration in Embodiment 1 is schematically shown;

[0016] Figure 2 Schematically shows Figure 1 A structure in a state of separation;

[0017] Figure 3 Schematically shows Figure 1 Cross-sectional structure of the midspherical apical membrane. DETAILED DESCRIPTION

[0018] Below, embodiments of the present invention are described in detail with reference to the accompanying drawings. To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in conjunction with the accompanying drawings is not intended to limit the scope of the present invention for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention.

[0020] Example 1

[0021] like Figure 1-Figure 3As shown, the speaker for preventing shell vibration provided in this embodiment is mainly adapted for use in electronic devices such as mobile phones and tablets, and mainly includes a speaker body 10, a membrane group arranged on the speaker body 10, and an outer cover body 30 arranged on the membrane group, wherein the speaker body 10 is mainly composed of a bracket 11 and a sound-generating body arranged in the bracket 11, and the sound-generating body is conventionally composed of a magnetic cover, a magnet, a pole plate and a voice coil, and the vibration of the voice coil drives the vibration of the membrane group to achieve sound.

[0022] Specifically, the membrane group includes a diaphragm 21, a spherical top membrane 22 arranged in the middle of the diaphragm 21, and a breathable membrane 23 arranged on the spherical top membrane 22. The diaphragm 21 and the spherical top membrane 22 are glued and fixed. The breathable membrane 23 completely covers the spherical top membrane 22. The breathable membrane 23 allows air to circulate but liquid cannot pass through. At the same time, a plurality of breathable holes 221 are arranged on the spherical top membrane 22. The breathable membrane 23 is used to cover the breathable holes 221. The breathable membrane 23 allows gas to pass but liquid cannot pass through.

[0023] Among them, the entire body of the sound-generating body is connected to the dome membrane 22 and is used to drive the movement of the dome membrane 22.

[0024] Among them, the dome membrane 22 includes two base layers 41, an inner core layer 42 arranged between the two base layers 41, and an outer layer 43 arranged outside the two base layers 41. The base layer 41 includes a plurality of continuously arranged protrusions 411 and recesses 412, which are generally wavy and made of metal aluminum. The positions of the protrusions 411 and the recesses 412 in the two base layers 41 correspond to each other and are in opposite directions. The air vents 221 are arranged at positions corresponding to the recesses 412.

[0025] Among them, the inner core layer 42 and the outer layer 43 are foamed filling materials, and the ball top membrane 22 is injection-molded in a mold. During its molding process, a plurality of positioning protrusions are arranged on the corresponding molding mold. Through the positioning protrusions, when the outer layer 43 is injected, a positioning depression can be formed in the outer layer 43, and holes are punched at the positioning depression positions to form air holes 221. In this way, it can be ensured that the air holes 221 are opened at the positions of the recessed parts 412 of the base layer 41. Opening holes at this position can reduce the deformation inside the ball top membrane 22 and ensure the strength of use.

[0026] In addition, a plurality of sound holes 31 are arranged on the outer cover 30, and the positions of the sound holes 31 correspond to the positions of the air holes 221, and the aperture of the sound holes 31 is much larger than the aperture of the air holes 221. The outer cover 30 is arranged on the bracket 11, and there is a gap between the outer cover 30 and the dome membrane 22. A waterproof and breathable layer 32 is arranged on the outer cover 30, and the waterproof and breathable layer 32 covers the sound holes 31. The waterproof and breathable layer 32 can only allow gas to pass through, thereby achieving a waterproof and breathable effect.

[0027] All the methods described herein can be performed in any suitable order. Any and all examples used, or exemplary language provided herein (such as "for example") are merely to better illustrate the present invention, and are not intended to limit the scope of the present invention, unless the claims are included. The language in the detailed description should not be understood as indicating any essential factors for practicing the present invention that are not claimed.

[0028] The present invention describes preferred embodiments, including the best way to carry out the present invention known to the inventor. Of course, variations of these preferred embodiments will be apparent to those skilled in the art. The inventors anticipate that skilled artisans may use such variations as appropriate, and the inventors point out that the present invention may be implemented in other ways than those specifically described herein. Therefore, the present invention includes all improvements included in the spirit and scope of the present invention as defined by the claims. Moreover, unless otherwise stated or clearly contradictory in content, the present invention includes any of the above factors and all possible variations thereof.

Claims

1. A loudspeaker for preventing shell vibration, characterized in that: include: A speaker body (10); A membrane group arranged on a loudspeaker body (10), the membrane group comprising a diaphragm (21), a spherical top membrane (22) arranged in the middle of the diaphragm (21), and a breathable membrane (23) arranged on the spherical top membrane (22), the spherical top membrane (22) being provided with a plurality of breathable holes (221), the breathable membrane (23) being used to cover the breathable holes (221), and the breathable membrane (23) allowing gas to pass through; An outer cover (30) is arranged on the membrane group, and a plurality of sound outlet holes (31) are arranged on the outer cover (30), and the positions of the sound outlet holes (31) correspond to the positions of the air holes (221).

2. A loudspeaker for preventing shell vibration according to claim 1, characterized in that: The loudspeaker body (10) comprises a bracket (11) and a sound-generating body arranged in the bracket (11); the sound-generating body is connected to the spherical top membrane (22) and is used to drive the movement of the spherical top membrane (22).

3. A loudspeaker for preventing shell vibration according to claim 2, characterized in that: The outer cover (30) is arranged on the bracket (11), a gap exists between the outer cover (30) and the dome membrane (22), a waterproof and breathable layer (32) is arranged on the outer cover (30), the waterproof and breathable layer (32) covers the sound outlet hole (31), and the waterproof and breathable layer (32) is only capable of allowing gas to pass through.

4. A loudspeaker for preventing shell vibration according to claim 3, characterized in that: The dome membrane (22) comprises two base layers (41), an inner core layer (42) arranged between the two base layers (41), and an outer layer (43) arranged outside the two base layers (41); the base layer (41) comprises a plurality of continuously arranged protrusions (411) and depressions (412); the protrusions (411) and depressions (412) in the two base layers (41) are located in corresponding positions and in opposite directions; the air vents (221) are located at positions corresponding to the depressions (412).

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