Miniature loudspeaker

Abstract

The utility model discloses a miniature loudspeaker, which comprises a basin stand, a voice diaphragm and a front cover, and is characterized in that the voice diaphragm comprises an inner fixing part, a folding ring part and an outer fixing part which are sequentially connected from inside to outside; the front cover comprises a surrounding wall, the top end of the surrounding wall is provided with an extension part extending towards the inner side, the bottom end of the surrounding wall is in sealed connection with the basin stand, and the outer fixing part is connected with the inner surface of the front cover; and when the micro loudspeaker is overlooked, the extension part shields at least partial area of the folding ring part. According to the miniature loudspeaker, the front cover is additionally arranged, the voice diaphragm is fixed on the inner side of the front cover, the front cover provides a plane which is fixedly combined with the module shell, and at least partial area of the folding ring part of the voice diaphragm is located below the extension part of the front cover, so that the width dimension requirement of the external fixing part in the horizontal direction is reduced; therefore, the real amplitude radiation area of the miniature loudspeaker is effectively increased, and the performance of the miniature loudspeaker is improved. In addition, the front cover can play a role in protecting the voice diaphragm, and the damage probability of the voice diaphragm is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electroacoustic transducer technical field, especially relate to a micro loudspeaker. BACKGROUND

[0002] Micro loudspeaker is widely used in portable electronic equipment such as mobile phone, notebook computer, hearing aid, with the miniaturization development of these portable electronic equipment, people's size and performance requirements of micro loudspeaker applied in it are higher and higher, under the relatively small size, micro loudspeaker needs greater sd (amplitude radiation area) simultaneously.

[0003] The existing micro loudspeaker is mostly that sound film is pasted on the basin frame, because the basin frame needs certain bonding width, and needs to reserve a plane to combine with module shell, which leads to that the real amplitude radiation area of micro loudspeaker is limited, and the performance of micro loudspeaker is affected. UTILITY MODEL CONTENT

[0004] The utility model solves technical problem for providing a micro loudspeaker with larger amplitude radiation area.

[0005] In order to solve the above technical problem, the utility model adopts the technical scheme that a micro loudspeaker comprises:

[0006] Basin frame

[0007] Sound film, the sound film includes inner fixed part, ring folding part and outer fixed part sequentially connected from inside to outside

[0008] Front cover, the front cover includes surrounding wall, the top end of the surrounding wall has the extension part extending towards the inside, the bottom end of the surrounding wall is sealedly connected with the basin frame, and the outer fixed part is connected with the inner surface of the front cover

[0009] When looking down at the micro loudspeaker, the extension part shields at least partial area of the ring folding part.

[0010] In an embodiment, the top of the basin frame has mounting slot, and the bottom end of the surrounding wall is located in the mounting slot.

[0011] In an embodiment, the mounting slot is communicated with the outer wall surface of the basin frame.

[0012] In an embodiment, the outer wall surface of the surrounding wall is arranged in alignment with the outer wall surface of the basin frame.

[0013] In an embodiment, the extension part is in the shape of ring frame as a whole.

[0014] In an embodiment, the outer fixing part comprises a connected ring part and a ring edge, an inner edge of the ring part is connected to the folded ring part, a top end of the ring edge is connected to an outer edge of the ring part, the ring part is connected to a bottom surface of the extension part, and / or an outer wall surface of the ring edge is connected to an inner wall surface of the enclosing wall.

[0015] In an embodiment, the enclosing wall and the extension part are integrally formed.

[0016] In an embodiment, the front cover is made of metal.

[0017] In an embodiment, the wall thickness of the front cover is 0.1-0.5mm.

[0018] In an embodiment, a ball top is further included, and the ball top is connected to the inner fixing part.

[0019] The micro speaker of the utility model has the advantages that: the front cover is additionally arranged, the sound film is fixed to the inner side of the front cover, a plane for fixing combination with the module shell is provided by the front cover, at least part of the area of the folded ring part of the sound film is located below the extension part of the front cover, the width size requirement of the outer fixing part in the horizontal direction is reduced, the real amplitude radiation area of the micro speaker is effectively increased, and the performance of the micro speaker is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structure shown in the drawings without creative labor for those skilled in the art.

[0021] Figure 1 It is a structure schematic view of the micro speaker of the utility model embodiment one.

[0022] Figure 2 It is a sectional view of the micro speaker of the utility model embodiment one.

[0023] Figure 3 It is Figure 2 It is an enlarged view of A in the middle.

[0024] EXPLANATION OF DRAWINGS:

[0025] 1, stand; 11, mounting groove;

[0026] 2, vibration assembly; 21, sound film; 211, inner fixed part; 212, folded ring part; 213, outer fixed part; 2131, ring part; 2132, ring edge; 22, voice coil; 23, ball top;

[0027] 3, magnetic circuit assembly; 31, yoke; 32, center magnetic structure; 33, side magnetic structure;

[0028] 4, front cover; 41, surrounding wall; 42, extension;

[0029] 5, skeleton;

[0030] 6, centering branch. DETAILED DESCRIPTION

[0031] The utility model discloses purposes, function characteristics and advantages will combine embodiment, reference drawing further explanation.

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0033] It should be noted that if the embodiments of the utility model involve directional indications such as up, down, left, right, front, back, etc., the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture, such as shown in the drawings. If the specific posture changes, the directional indications also change accordingly.

[0034] In addition, if the embodiments of the utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features.

[0035] In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel schemes. Taking "and / or" as an example, it includes scheme, or scheme, or and simultaneously satisfied scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0036] In this application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and other terms should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0037] Embodiment one

[0038] Please refer to Figures 1 to 3 The embodiment one of the utility model discloses: a micro loudspeaker, including the frame 1, vibration subassembly 2, magnetic circuit subassembly 3 and front cover 4, magnetic circuit subassembly 3 is connected frame 1, magnetic circuit subassembly 3 includes yoke 31 and respectively set on the center magnetic structure 32 and the edge magnetic structure 33 of yoke 31, the edge magnetic structure 33 is arranged around the center magnetic structure 32, and the magnetic gap is formed between the edge magnetic structure 33 and the center magnetic structure 32, and the front cover 4 includes the enclosing wall 41, the top end of enclosing wall 41 has the extension 42 extending towards the inside, and the bottom end of enclosing wall 41 is sealingly connected with frame 1, vibration subassembly 2 includes the diaphragm subassembly and voice coil 22 connected, voice coil 22 is arranged corresponding to the magnetic gap, and the diaphragm subassembly includes sound film 21, and sound film 21 includes inner fixed part 211, ring folding part 212 and outer fixed part 213 connected in sequence from inside to outside, and outer fixed part 213 is connected to the inner surface of front cover 4, when looking down micro loudspeaker, the extension 42 shields at least partial area of ring folding part 212.

[0039] The diaphragm subassembly further includes a ball top 23, the ball top 23 is connected to the inner fixed part 211, in the embodiment, a through hole is arranged in the central region of the inner fixed part 211, and the ball top 23 covers the through hole; the voice coil 22 is connected to the ball top 23.

[0040] Optionally, the micro loudspeaker further includes a skeleton 5, and the voice coil 22 is indirectly connected to the ball top 23 through the skeleton 5.

[0041] To facilitate the positioning and installation of the front cover 4 and the frame 1, the top of the frame 1 has a mounting groove 11, and the bottom end of the enclosing wall 41 is located in the mounting groove 11.

[0042] To facilitate the processing of the mounting groove 11, the mounting groove 11 is in communication with the outer wall surface of the frame 1. In the embodiment, the outer wall surface of the enclosing wall 41 is arranged in alignment with the outer wall surface of the frame 1, and in other embodiments, the outer wall surface of the enclosing wall 41 can also be protruding or recessed relative to the outer wall surface of the frame 1.

[0043] As a preferred embodiment, the extension 42 is in the shape of a ring frame, which not only increases the bonding area with the outer fixed part 213, but also improves the structural strength of the front cover 4 itself, thereby improving the structural stability of the micro speaker.

[0044] The outer fixed part 213 is sealingly connected with the front cover 4, and the outer fixed part 213 comprises a ring part 2131 and a ring edge 2132 connected with each other. The inner edge of the ring part 2131 is connected with the folded ring part 212, the top end of the ring edge 2132 is connected with the outer edge of the ring part 2131, the ring part 2131 is connected with the bottom surface of the extension 42, or the outer wall surface of the ring edge 2132 is connected with the inner wall surface of the surrounding wall 41. In this embodiment, the ring part 2131 is connected with the bottom surface of the extension 42, and the outer wall surface of the ring edge 2132 is connected with the inner wall surface of the surrounding wall 41.

[0045] The surrounding wall 41 and the extension 42 are in an integrated structure formed by integral processing. In some embodiments, the material of the front cover 4 can be hard plastic, but in order to balance the thickness and strength of the front cover 4, the material of the front cover 4 is preferably metal. In this embodiment, the material of the front cover 4 is stainless steel, and the wall thickness of the front cover 4 is 0.1-0.5 mm.

[0046] Optionally, a centering support sheet 6 is further included, which is connected with the yoke 1 and the voice coil 22.

[0047] The above is only an optional embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation or direct / indirect application in other related technical fields based on the inventive concept of the present application and the content of the present application specification and drawings are included in the patent protection scope of the present application.

Claims

1. A micro speaker, characterized by: The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker.

2. The micro speaker of claim 1, wherein: The application relates to a micro loudspeaker.

3. The microspeaker of claim 2, wherein: The application relates to a micro loudspeaker.

4. The microspeaker of claim 3, wherein: The application relates to a micro loudspeaker.

5. The microspeaker of claim 1, wherein: The application relates to a micro loudspeaker.

6. The microspeaker of claim 5, wherein: The application relates to a micro loudspeaker.

7. The microspeaker of claim 1, wherein: The application relates to a micro loudspeaker.

8. The microspeaker of claim 1, wherein: The application relates to a micro loudspeaker.

9. The microspeaker of claim 8, wherein: The application relates to a micro loudspeaker.

10. The microspeaker of claim 1, wherein: The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application relates to a micro loudspeaker. The application

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