CN216775018U

CN216775018U - Loudspeaker and sound production device

Info

Publication number: CN216775018U
Application number: CN202220307498.6U
Authority: CN
Inventors: 吴德跃; 邵明辉; 刘少华; 刘光磊
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2022-02-15
Filing date: 2022-02-15
Publication date: 2022-06-17
Anticipated expiration: 2032-02-15

Abstract

The utility model discloses a loudspeaker and sound production equipment, wherein the loudspeaker comprises a shell, a magnetic circuit system and a vibration system, wherein the shell is provided with a mounting hole, and one surface of the shell is provided with an external bonding pad; the magnetic circuit system is arranged in the mounting hole and comprises a magnetic yoke, a central magnet, a ring iron and a side magnet, wherein the ring iron is annularly arranged on the periphery of the central magnet and forms a first magnetic gap with the central magnet, and the side magnet is arranged on the periphery of the ring iron and forms a second magnetic gap with the central magnet; vibration system includes vibrating diaphragm, first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil, and the periphery of vibrating diaphragm is fixed in the casing, and first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil are all connected in the surface of vibrating diaphragm towards magnetic circuit to insert respectively in first magnetic gap and the second magnetic gap, the vibrating diaphragm has been seted up and has been dodged the hole, and first voice coil loudspeaker voice coil is connected with first lead wire, and first lead wire is connected with external pad through dodging the hole. The loudspeaker of the utility model can improve the utilization rate of the magnetic circuit system and does not increase the horizontal and height spaces of the product.

Description

Loudspeaker and sound production device

Technical Field

The utility model relates to the technical field of sound generating device structures, in particular to a loudspeaker and sound generating equipment.

Background

The loudspeaker is widely applied to mobile electronic equipment at present and is an important device for realizing electroacoustic conversion. Among them, the moving coil type speaker is most widely used. As mobile electronic devices are designed toward being light and thin, the size, particularly the thickness, of micro-speakers also gradually tends to be miniaturized, which causes the sizes of a voice coil and a magnetic circuit in a moving coil speaker to be compressed, greatly limiting acoustic output.

At present, although the design of a double voice coil is a solution for improving the sound output of a micro speaker, the basic structure of the design is to use two voice coils with different sizes, the two voice coils are nested, and the corresponding magnetic circuits are also designed into two groups of magnetic loops which are respectively used for driving the two voice coils to vibrate simultaneously. However, the dual voice coil structure also has disadvantages that the narrow internal space of the micro-speaker limits the electrical connection of the two voice coils, and the leads of the voice coils sacrifice extra horizontal and height spaces, which is not beneficial to the reduction of the volume.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a loudspeaker, aiming at improving the sound output of the loudspeaker without additionally increasing the volume of the loudspeaker.

In order to achieve the above object, the present invention provides a speaker comprising:

the device comprises a shell, a first connecting piece and a second connecting piece, wherein the shell is provided with a mounting hole, and one surface of the shell is provided with an external welding pad;

the magnetic circuit system is arranged in the mounting hole and comprises a magnetic guide yoke, a central magnet, a ring iron and a side magnet, wherein the central magnet, the ring iron and the side magnet are arranged on the magnetic guide yoke; and

the vibration system, vibration system includes vibrating diaphragm, first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil, the periphery of vibrating diaphragm is fixed in the casing, and be located magnetic circuit's one side, first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil all connect in the vibrating diaphragm orientation magnetic circuit's surface, and insert respectively first magnetic gap with in the second magnetic gap, the hole of dodging has been seted up to the vibrating diaphragm, first voice coil loudspeaker voice coil is connected with first lead wire, first lead wire passes dodge the hole with external pad is connected.

In an embodiment, the vibration system further includes a dome, the vibrating diaphragm has a center hole, the dome cover is disposed in the center hole, the avoiding hole is communicated with the center hole, the first voice coil is connected to the dome, the second voice coil is connected to the vibrating diaphragm, and corresponds to the avoiding hole, one end of the first lead is connected to the first voice coil is close to one end of the dome, and the other end extends to the second voice coil is close to one side of the vibrating diaphragm and passes through the avoiding hole and the external bonding pad are connected.

In an embodiment, the diaphragm includes a central portion, a ring portion and a connecting portion, the central portion and the connecting portion are connected respectively to two sides of the ring portion, the connecting portion is installed in the casing, the central portion has been seted up the central hole with the avoiding hole, the avoiding hole is located the corner portion of the diaphragm, the extending direction of the avoiding hole is consistent with the extending direction of the long edge of the first voice coil.

In one embodiment, the extended length of the avoiding hole is greater than the width of the second voice coil;

and/or the width of the avoiding hole is larger than the diameter of the first lead.

In an embodiment, the external connection pads are two, the two external connection pads are respectively arranged on two opposite sides of the casing, the first lead is two, the two first leads are respectively arranged on two opposite short edges of the first voice coil, and the first lead penetrates through the avoiding hole to be connected to the external connection pad.

In one embodiment, the vibration system further comprises a fixing member that fixes the middle portion of the first lead to the dome.

In one embodiment, the external bonding pad is arranged on the surface of the shell, which is far away from the vibrating diaphragm; the limit magnet is four, four limit magnet interval is located the periphery of ring iron forms between two adjacent limit magnets and dodges the mouth, first lead wire process buckle again behind the dodging hole and extend through one dodge the mouth connect in external pad.

In an embodiment, the magnetic circuit system further includes a central magnetic conduction member, a first side magnetic conduction member, and a second side magnetic conduction member, the central magnetic conduction member is disposed on the surface of the central magnet facing the diaphragm, the first side magnetic conduction member is disposed on the surface of the ring iron facing the diaphragm, and the second side magnetic conduction member is disposed on the surface of the side magnet facing the diaphragm; an avoidance space is formed between the two adjacent second-side magnetic conduction pieces, and the avoidance space is communicated with the avoidance port.

In an embodiment, the second voice coil is connected to a second lead, one end of the second lead is connected to one end of the second voice coil, which is far away from the diaphragm, and the other end of the second lead is connected to the external bonding pad through another avoiding port.

In an embodiment, the casing includes casing body and a plurality of installation department, the casing body has seted up the mounting hole, it is a plurality of the installation department interval is located the week side of casing body, the periphery of vibrating diaphragm install in casing body and closing cap the mounting hole, the magnetic conduction yoke is fixed in a plurality of the installation department, adjacent two clearance between the installation department corresponds dodge the hole.

The utility model further provides sound production equipment which comprises an electronic equipment shell and the loudspeaker arranged in the electronic equipment shell, wherein the loudspeaker is any one of the loudspeakers.

The loudspeaker comprises a shell, a magnetic circuit system and a vibration system, wherein the magnetic circuit system and the vibration system are arranged on the shell, the magnetic circuit system comprises a magnetic guide yoke, a central magnet, a ring iron and side magnets, the central magnet, the ring iron and the side magnets are arranged on the magnetic guide yoke, and a first magnetic gap and a second magnetic gap which are sleeved are formed between the ring iron and the central magnet and between the ring iron and the side magnets respectively, so that a first voice coil and a second voice coil in the vibration system can be inserted respectively, a structure that one magnetic circuit system drives the two voice coils to vibrate is realized, the utilization rate of the magnetic circuit system is effectively improved, and the product performance is improved. Simultaneously, because the setting of ring iron, in order to realize the electricity of first voice coil loudspeaker voice coil, seted up on the vibrating diaphragm and dodged the hole, the first lead wire that first voice coil loudspeaker voice coil is connected extends to the external pad of casing through dodging the hole on, thereby need not to increase the thickness of casing or the space between vibrating diaphragm and the magnetic circuit, also need not to increase the horizontal space in magnetic gap, more need not to set up other electric connection piece, effectively reduced the space of vibration system in level and direction of height and occupied, also reduced the whole volume of speaker, be favorable to the product slimming.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a speaker according to an embodiment of the present invention;

FIG. 2 is a top view of the loudspeaker of FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a bottom view of the speaker of FIG. 1;

FIG. 6 is a schematic diagram of the loudspeaker of FIG. 1 with the dome and the enclosure removed;

FIG. 7 is a schematic diagram of the structure of the vibration system and external bonding pads of the loudspeaker of FIG. 1;

fig. 8 is an exploded view of the loudspeaker of fig. 1;

fig. 9 is a schematic structural diagram of a diaphragm in the loudspeaker shown in fig. 1;

fig. 10 is a schematic structural diagram of a magnetic circuit system in the loudspeaker shown in fig. 1;

fig. 11 is a partial exploded view of the magnetic circuit system of fig. 10;

fig. 12 is a graph comparing the speaker shown in fig. 1 with a conventional structure.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Loudspeaker	26	Second side magnetic conduction piece
10	Shell body	26a	Avoidance space
				111	Shell body	27	Magnetic conductive yoke
1111	External bonding pad	30	Vibration system
				1112	Mounting hole	31	Vibrating diaphragm
112	Mounting part	311	Center part
				20	Magnetic circuit system	3111	Avoiding hole
20a	First magnetic gap	3112	Center hole
				20b	Second magnetic gap	312	Folded ring part
21	Center magnet	313	Connecting part
				22	Ring iron	32	First voice coil
23	Edge magnet	321	First lead wire
				23a	Dodging port	33	Second voice coil
24	Central magnetic conduction piece	331	Second lead wire
				25	First edge magnetic conduction piece	34	Ball top

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

Also, the meaning of "and/or" and/or "appearing throughout is meant to encompass three scenarios, exemplified by" A and/or B "including scenario A, or scenario B, or scenarios where both A and B are satisfied.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The present invention provides a loudspeaker 100.

Referring to fig. 1 to 5, in an embodiment of the present invention, a speaker 100 includes a housing 10, a magnetic circuit system 20, and a vibration system 30, wherein the housing 10 has a mounting hole 1112, and a surface of the housing 10 is provided with an external pad 1111; the magnetic circuit system 20 is mounted in the mounting hole 1112, the magnetic circuit system 20 includes a magnetic yoke 27, a center magnet 21, a ring iron 22 arranged around the center magnet 21, and a side magnet 23 arranged around the ring iron 22, a first magnetic gap 20a is formed between the center magnet 21 and the ring iron 22, and a second magnetic gap 20b is formed between the ring iron 22 and the side magnet 23; vibration system 30 includes vibrating diaphragm 31, first voice coil 32 and second voice coil 33, the periphery of vibrating diaphragm 31 is fixed in casing 10, and lie in one side of magnetic circuit 20, first voice coil 32 and second voice coil 33 all connect in vibrating diaphragm 31 moves towards magnetic circuit 20's surface, and insert respectively first magnetic gap 20a with in the second magnetic gap 20b, vibrating diaphragm 31 has been seted up and has been dodged hole 3111, first voice coil 32 is connected with first lead wire 321, first lead wire 321 passes through dodge hole 3111 with external pad 1111 connects.

In this embodiment, the housing 10 is used for fixing the vibration system 30 and the magnetic circuit system 20, plays a certain supporting role, and is used for fixing the loudspeaker 100 to an applied product. The housing 10 may be made of plastic, which is convenient to process and has good structural stability. The housing 10 may be a separate structure or an integrally formed structure, which is not limited herein. The casing 10 is generally flat, and on the basis that the magnetic circuit system 20 and the vibration system 30 are disposed on the casing 10, the overall thickness of the speaker 100 is not too large, so that the occupied space is reduced, and miniaturization is facilitated. The cross-sectional shape of the housing 10 may be circular, square, polygonal, etc., and is not limited herein and may be set as desired.

The magnetic circuit system 20 is installed in the casing 10, specifically, the magnetic yoke 27 is installed in the installation hole 1112 of the casing 10 and covers the opening of the installation hole 1112, the connection between the magnetic yoke 27 and the casing 10 may be welded, bonded or clamped, but is not limited herein, the magnetic yoke 27 and the casing 10 are cooperatively formed with an installation space, the central magnet 21, the ring iron 22 and the edge magnet 23 are all installed on the magnetic yoke 27, the ring iron 22 is annularly installed on the periphery of the central magnet 21, the edge magnet 23 is annularly installed on the periphery of the ring iron 22, the ring iron 22 is annularly installed between the central magnet 21 and the edge magnet 23, so that a first magnetic gap 20a can be formed between the magnetic yoke and the central magnet 21, and a second magnetic gap 20b can be formed between the magnetic yoke and the edge magnet 23, thus, the structure is simple, the first magnetic gap 20a on the inner side and the second magnetic gap 20b on the outer side are formed, the dual-drive magnetic circuit system 20 is realized, and the utilization rate of the magnetic circuit system 20 is effectively improved, the method does not occupy too much space, is favorable for improving the product performance, and does not increase too much cost. Here, the side magnets 23 have the same magnetic pole direction as the center magnet 21 and the opposite magnetic pole direction from the ring iron 22, so that two sets of magnetic circuits having opposite directions are formed in the first magnetic gap 20a and the second magnetic gap 20 b.

The vibration system 30 includes a diaphragm 31, a first voice coil 32 and a second voice coil 33, the diaphragm 31 may be made of silica gel, the edge of the diaphragm 31 is connected to the edge of the casing 10, one end of the first voice coil 32 and one end of the second voice coil 33 are both connected to the diaphragm 31, and the other end of the first voice coil 32 and the other end of the second voice coil 33 are respectively suspended in the first magnetic gap 20a and the second magnetic gap 20 b. After the first voice coil 32 and the second voice coil 33 are connected and conducted with an external circuit, current is introduced into a magnetic field formed by the magnetic circuit system 20, so that the first voice coil 32 and the second voice coil 33 move in a magnetic gap to drive the diaphragm 31 to vibrate, and sound production is realized. Here, the current directions of the first voice coil 32 and the second voice coil 33 are opposite to each other corresponding to the magnetic loops with opposite magnetic poles, and the two voice coils may be connected in series or in parallel, so that the two voice coils can receive lorentz forces in the same direction in respective magnetic gaps to drive the diaphragm 31 to realize vibration and sound production.

Since the lead connection of the first voice coil 32 is obstructed due to the arrangement of the ring iron 22, in order to perform electrical connection without additionally arranging parts, the first lead 321 connected to the first voice coil 32 needs to extend from the position of the diaphragm 31 on the upper side to be electrically connected with an external pad. Here, the diaphragm 31 is correspondingly provided with a relief hole 3111, so that the first lead 321 is connected to the external pad 1111 of the housing 10. Optionally, the avoiding hole 3111 may be circular, square, irregular, or the like, which is not limited herein, and it is sufficient to ensure that the first lead 321 can pass through smoothly. The position of the external connection pad 1111 is not limited, and may be located on any surface of the housing 10. The external pad 1111 may be welded or adhered to the housing 10, or a welding point may be directly formed on the housing 10.

The loudspeaker 100 of the technical scheme of the utility model comprises a shell 10, a magnetic circuit system 20 and a vibration system 30 which are arranged on the shell 10, wherein the magnetic circuit system 20 comprises a magnetic guide yoke 27, a central magnet 21, a ring iron 22 and an edge magnet 23 which are arranged on the magnetic guide yoke 27, and a first magnetic gap 20a and a second magnetic gap 20b which are sleeved are respectively formed between the ring iron 22 and the central magnet 21 and between the ring iron 22 and the edge magnet 23, so that a first voice coil 32 and a second voice coil 33 in the vibration system 30 can be respectively inserted, a structure that one magnetic circuit system 20 drives the two voice coils to vibrate is realized, the utilization rate of the magnetic circuit system 20 is effectively improved, and the performance of a mechanical-electrical conversion system is improved by matching with the two voice coils. Meanwhile, due to the arrangement of the ring iron 22, in order to realize the electrical connection of the first voice coil 32, the avoiding hole 3111 is formed in the vibrating diaphragm 31, the first lead 321 connected with the first voice coil 32 extends to the external bonding pad 1111 of the casing 10 through the avoiding hole 3111, so that the thickness of the casing or the space between the vibrating diaphragm 31 and the magnetic circuit system 20 does not need to be increased, the horizontal space of the magnetic gap does not need to be increased, other electrical connection members do not need to be arranged, the space occupation of the vibrating system 30 in the horizontal and height directions is effectively reduced, the overall volume of the loudspeaker 100 is also reduced, the space utilization rate is improved, and the product thinning is facilitated.

Referring to fig. 5, fig. 6 and fig. 7, in an embodiment, the vibration system 30 further includes a dome 34, the diaphragm 31 has a central hole 3112, the dome 34 is disposed in the central hole 3112, the avoiding hole 3111 is communicated with the central hole 3112, the first voice coil 32 is connected to the dome 34, the second voice coil 33 is connected to the diaphragm 31 and corresponds to the avoiding hole 3111, one end of the first lead 321 is connected to one end of the first voice coil 32 close to the dome 34, and the other end of the first lead extends to one side of the second voice coil 33 close to the diaphragm 31 and passes through the avoiding hole 3111 to be connected to the external pad 1111.

In this embodiment, in order to improve the vibration effect of the diaphragm 31, the vibration system 30 further includes a dome 34, the diaphragm 31 is provided with a central hole 3112, and the dome 34 covers the central hole 3112, so that the dome 34 has better rigidity and light weight, and can better optimize the frequency response of the high-frequency portion. Here, the dome 34 is disposed on the surface of the diaphragm 31 away from the magnetic circuit system 20, the first voice coil 32 is connected to the dome 34, and the second voice coil 33 is connected to the diaphragm 31, so that a certain height difference exists between the top end of the first voice coil 32 and the diaphragm 31, one end of the first lead 321 is connected to one end of the first voice coil 32 close to the dome 34, the first lead 321 may have a certain extension space, and the avoiding hole 3111 is communicated with the central hole 3112, the second voice coil 32 corresponds to the avoiding hole 3111, that is, the position of the avoiding hole 3111 coincides with the projection of the position of the second voice coil 33 on the diaphragm 31, so that the hole wall of the avoiding hole 3111 and the second voice coil 33 form a channel, so that the first lead 321 can avoid the ring iron 22 and the second voice coil 33 after passing through, and is conveniently connected to the external bonding pad 1111. The scheme reasonably utilizes the structure of the vibration system 30, does not need to increase other parts and structural thickness, effectively avoids occupying the height space of the loudspeaker 100 and is beneficial to miniaturization.

Here, the provision of the double voice coil can suppress high-frequency resonance of the dome 34, and can expand the high-frequency performance of the speaker 100. Referring to fig. 12, the dashed line is a frequency response curve measured by the speaker 100 of the present application, and the solid line is a frequency response curve measured by the structure in the prior art, so that it is obvious that, in the high frequency portion, the speaker 100 of the present application can obtain a smoother frequency response curve, and has better high frequency performance.

Referring to fig. 6 and 7, in an embodiment, the diaphragm 31 includes a central portion 311, a folded ring portion 312 and a connecting portion 313, two sides of the folded ring portion 312 are respectively connected to the central portion 311 and the connecting portion 313, the connecting portion 313 is installed in the casing 10, the central portion 311 is opened with the central hole 3112 and the avoiding hole 3111, the avoiding hole 3111 is installed at a corner portion of the diaphragm 31, and an extending direction of the avoiding hole 3111 is consistent with an extending direction of a long side of the first voice coil 32.

It can be understood that the diaphragm 31 includes a connection portion 313, a corrugated portion 312 and a central portion 311, the central portion 311 is planar and is used for being connected to a voice coil and realizing up-and-down vibration, the corrugated portion 312 is disposed around the central portion 311, one side of the corrugated portion 312 away from the central portion 311 is connected to the connection portion 313, and the connection portion 313 is bonded or welded to the housing 10, so as to realize the installation of the diaphragm 31. The connection portion 313 is also formed in a planar shape so as to facilitate connection with the housing 10, thereby achieving a stable connection structure. The materials of the central portion 311 and the corrugated portion 312 may be selected differently to ensure the compliance and stability of the vibration of the diaphragm 31.

It can be understood that the corrugated portion 312 is of a concave or convex structure, that is, the corrugated portion 312 between the two planar central portions 311 and the connecting portion 313 is of an arc-shaped structure, so as to facilitate the diaphragm 31 to have good deformability. The bending portion 312 may be a regular arc structure, such as a semi-circular arc or an elliptical arc, or may be an irregular curve, which is not limited herein. During vibration, the edge portion 312 vibrates together with the center portion 311, and thus the vibration stability of the voice coil can be improved, and the voice coil can be kept moving up and down in the axial direction thereof. In addition, the shape of the corrugated rim portion 312 in the circumferential direction may be different, for example, when the casing 10 and the diaphragm 31 are both rectangular parallelepiped, the corrugated rim portion 312 is set to be concave toward the vibration system 30 in the width direction, and in the length direction, the corrugated rim portion 312 is connected in two semi-circular arcs with opposite directions, that is, a part of concave and a part of convex, so that the vibration effect of the diaphragm 31 can be further improved, and the distortion can be reduced.

Since the second voice coil 33 is disposed on the central portion 311, the central portion 311 is provided with the avoiding hole 3111, so that the avoiding hole 3111 is closer to the edge of the housing 10 and is conveniently connected to the external pad 1111. And when the dome 34 is rectangular in shape, the center hole 3112 is also rectangular in shape. Here, the avoiding hole 3111 is disposed at a corner portion of the diaphragm 31, that is, at a corner of the center hole 3112, and an extending direction of the avoiding hole 3111 is set to be the same as an extending direction of a long side of the first voice coil 32, so that it is more convenient to allow the first lead 321 to pass through the avoiding hole 3111, and the size of the opening used is relatively small, thereby reducing an influence on the diaphragm 31.

Referring to fig. 7 and 9, in an embodiment, the extending length of the avoiding hole 3111 is greater than the width of the second voice coil 33;

and/or, the width of the avoiding hole 3111 is greater than the diameter of the first lead 321.

In this embodiment, in order to facilitate the first lead 321 to penetrate through the second voice coil 33, the extending length of the avoiding hole 3111 needs to be greater than the width of the second voice coil 33, where the width of the second voice coil refers to the winding thickness of the annular second voice coil on a single side, that is, the dimension of the second voice coil in the direction of the connection line from the center to the edge of the point, so that when the second voice coil 33 is penetrated, a gap may be reserved to allow the second lead 331 to penetrate through the diaphragm 31, thereby facilitating the extension to the periphery of the housing 10, and being capable of not limiting the movement of the second lead 331, thereby ensuring the vibration effect. Of course, the extending length of the avoiding hole 3111 should not be too long, so as to reduce the risk of easy breakage of the diaphragm 31 due to too large opening.

Of course, in order not to affect the vibration of the second lead 331, the width of the avoiding hole 3111 needs to be larger than the diameter of the first lead 321, so that the influence on the first lead 321 can be reduced, the interference can be reduced, and the vibration effect of the vibration system 30 can be ensured.

Referring to fig. 7 and 8, in an embodiment, two external pads 1111 are disposed, the two external pads 1111 are disposed on two opposite sides of the casing 10, the two first leads 321 are disposed on two opposite short sides of the first voice coil 32, and one first lead 321 passes through one avoiding hole 3111 and is connected to one external pad 1111.

In this embodiment, first voice coil 32 is connected with two first lead wires 321, because the voice coil has coil head and coil tail when the coiling, two first lead wires 321 also can be regarded as coil head and coil tail, thereby realize the electric current circulation of first voice coil 32, for convenient electricity connection, will connect pad 1111 also to set up two outward, and be located the relative both sides of casing 10 respectively, thereby seted up in the relative both sides of vibrating diaphragm 31 and dodged hole 3111, it is not good to avoid the trompil to concentrate to cause structural stability, thereby reduce the influence to vibrating diaphragm 31 structural stability. The two first leads 321 are on two opposite short sides of the first voice coil 32 and on the same long side, thereby ensuring stability of vibration of the first voice coil 32. Of course, here, the vibrating diaphragm 31 is provided with four avoiding holes 3111 respectively located on four corners thereof, so as to further improve the uniformity of the structural strength of the vibrating diaphragm 31 itself and ensure the stability of vibration.

In one embodiment, the vibration system 30 further includes a fixing member that fixes the middle portion of the first lead 321 to the dome 34.

In this embodiment, in order to ensure the regularity of the first lead 321, a fixing member is provided during the process of extending the first lead 321 from the first voice coil 32 to the second voice coil 33, and the fixing member can connect the middle part of the first lead 321 and the ball top 34, so as to ensure the stability of the lead extension, prevent the disorder during the vibration process, and avoid the interference with the magnetic circuit system 20. The fixing member may be made of silicone, or may be made of a colloid, and is not limited herein. Specifically, the fixing element may have the same extending direction as the first lead 321, and may be sleeved on the first lead 321, so as to further improve the connection stability.

Referring to fig. 8 and 10 again, in an embodiment, the external pad 1111 is disposed on a surface of the casing 10 away from the diaphragm 31, the number of the side magnets 23 is four, the four side magnets 23 are disposed at intervals on the periphery of the ring iron 22, an avoiding opening 23a is formed between two adjacent side magnets 23, and the first lead 321 passes through the avoiding hole 3111 and then bends to extend through the avoiding opening 23a to be connected to the external pad 1111.

Here, for pleasing to the eye to reduce the length of lead wire, set up external pad 1111 at the surface that casing 10 deviates from vibrating diaphragm 31, also be the back, and external pad 1111 is provided with three welding point, and two of both sides correspond the welding of first lead wire 321 and second lead wire 331 respectively, and the welding point in the middle of can be used to be connected with the product is electric, thereby promotes stability and the convenience of electric connection. The first lead 321 and the second lead 331 are both made of conductive metal material, such as copper, and have good structural stability and electrical conductivity.

It can be understood that, in order to avoid the first lead 321, four side magnets 23 are provided, and four side magnets 23 are respectively provided on four sides of the ring iron 22, so that a certain size of an avoiding opening 23a is formed between every two side magnets 23, and after the first lead 321 passes through the second voice coil 33, it is necessary to bend and extend through the avoiding opening 23a and then reach the external pad 1111 of the housing 10. The provision of the avoidance opening 23a can reduce interference with the first lead 321 to the utmost, and ensure stability of electrical connection of the first voice coil 32.

Of course, in other embodiments, the edge magnet 23 may be disposed in a ring shape, and an avoiding groove or an avoiding through hole may be disposed at a position corresponding to the first lead 321, so that the first lead 321 may pass through.

Referring to fig. 10 and 11, in an embodiment, the magnetic circuit system 20 further includes a central magnetic conducting member 24, a first side magnetic conducting member 25 and a second side magnetic conducting member 26, the central magnetic conducting member 24 is disposed on a surface of the central magnet 21 facing the diaphragm 31, the first side magnetic conducting member 25 is disposed on a surface of the ring iron 22 facing the diaphragm 31, and the second side magnetic conducting member 26 is disposed on a surface of the side magnet 23 facing the diaphragm 31; an avoiding space 26a is formed between two adjacent second side magnetic conductive members 26, and the avoiding space 26a is communicated with the avoiding opening 23 a.

In order to improve the magnetic effect of the magnetic circuit system 20, the magnetic circuit system 20 further includes a central magnetic conductive member 24, the central magnetic conductive member 24 is disposed on a surface of the central magnet 21 facing the diaphragm 31, so as to enhance the magnetic force lines of the central magnet 21 and reduce the magnetic flux leakage phenomenon, thereby improving the driving effect on the vibration system 30, ensuring the vibration effect of the vibration system 30, and improving the acoustic performance of the speaker 100. In order to further improve the magnetic effect of the ring iron 22 and the edge magnet 23, the magnetic circuit system 20 is further provided with a first edge magnetic conducting member 25 and a second edge magnetic conducting member 26, the first edge magnetic conducting member 25 is arranged on the surface of the ring iron 22 facing the diaphragm 31, and the second edge magnet 23 is arranged on the surface of the edge magnet 23 facing the diaphragm 31, so that the magnetic line strength of the ring iron 22 and the edge magnet 23 can be enhanced, and the driving effect can be ensured. Here, optionally, the first side magnetic conductive member 25 and the second side magnetic conductive member 26 are both made of conductive metal.

Here, when the four side magnets 23 are provided, the four second side magnetic conductive members 26 are also provided and are provided in one-to-one correspondence with the four side magnets 23, respectively, thereby achieving a uniform reinforcing effect. Thus, an avoiding space 26a is also formed between two adjacent second side magnetic conductive members 26 and is communicated with the avoiding opening 23a, so that interference and influence on the first lead 321 are further reduced.

Optionally, the first side magnetic conductive members 25 disposed on the ring iron 22 may also be disposed in a plurality of numbers, the first side magnetic conductive members 25 are disposed in the circumferential direction of the ring iron 22 at intervals, and two adjacent first side magnetic conductive members 25 are also formed with a hole, so that when the first lead 321 extends on the surface of the dome 34, the first lead may be disposed along the extending direction of the hole, thereby reserving a larger vibration space, utilizing the space of the magnetic circuit system 20 to the maximum extent, and reducing the vibration influence on the vibration system 30.

In an embodiment, the second voice coil 33 is connected to a second lead 331, one end of the second lead 331 is connected to an end of the second voice coil 33 far away from the diaphragm 31, and the other end is connected to the external bonding pad 1111 through another avoidance port 23 a.

In this embodiment, because the second voice coil 33 is located in the second magnetic gap 20b on the outer side, on the basis that the side magnet 23 is disposed at a plurality of intervals, the second lead 331 is connected to one end of the second voice coil 33 away from the diaphragm 31, so that the second lead 331 is conveniently connected to the external pad 1111 through the avoiding opening 23a, which is simple and convenient.

Of course, similar to the first voice coil 32, the second voice coil 33 is also provided with two second leads 331, which are a lead head and a lead tail, respectively, and the two second leads 331 are disposed on two sides of the second voice coil 33 in the length direction, respectively, so as to achieve stable electrical connection and improve the stability of the vibration of the second voice coil 33.

In an embodiment, the casing 10 includes a casing body 111 and a plurality of installation parts 112, the casing body 111 has been seted up the mounting hole 1112, it is a plurality of the installation part 112 interval is located the week side of casing body 111, the periphery of vibrating diaphragm 31 is installed in casing body 111 and closing cap mounting hole 1112, the magnetic yoke 27 is fixed in a plurality of the installation part 112, two adjacent the clearance between the installation part 112 corresponds dodge hole 3111.

In this embodiment, the casing 10 includes a casing body 111 and a plurality of mounting portions 112 disposed inside the casing body 111, the casing body 111 is annular, and may be made of plastic, and the casing body 111 is provided with mounting holes 1112 to form corresponding mounting spaces. The shell body 111 is used for installing the vibrating diaphragm 31, the installation parts 112 are used for fixing the magnetic yoke 27, and here, the installation parts 112 are four and are arranged corresponding to the side magnets 23 one by one, and the gap between every two installation parts 112 is corresponding to the avoiding hole 3111, so that a space with a larger size is formed for the lead to penetrate through. The shape of the yoke 27 is matched to the shape of the opening of the case 10, thereby realizing a stable coupling structure. Here, the mounting portion 112 and the housing body 111 can be formed by integral injection molding, so that a good combination can be formed, the processing precision and the structural stability can be ensured, and the mounting stability and the mounting precision of the speaker 100 can be further improved.

The utility model also provides a sound generating device (not shown) comprising an electronic device housing and a loudspeaker 100 arranged on the electronic device housing, wherein the loudspeaker 100 is the loudspeaker 100. Since the speaker 100 of the sound generating apparatus adopts all technical solutions of all the foregoing embodiments, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are provided, and details are not repeated herein.

Here, the sound generating device may be an electronic device such as a sound box, a mobile phone, or an earphone, and is not limited herein. Of course, the sound generating device may also be applied in vehicles, as vehicle mounted speakers, consumer speakers, etc.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A loudspeaker, characterized in that the loudspeaker comprises:

the vibration system, vibration system includes vibrating diaphragm, first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil, the periphery of vibrating diaphragm is fixed in the casing, and be located magnetic circuit's one side, first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil all connect in the vibrating diaphragm orientation magnetic circuit's surface, and insert respectively first magnetic gap with in the second magnetic gap, the hole of dodging has been seted up to the vibrating diaphragm, first voice coil loudspeaker voice coil is connected with first lead wire, first lead wire process dodge the hole with external pad is connected.

2. The loudspeaker of claim 1, wherein the vibration system further comprises a dome, the diaphragm has a center hole, the dome cover is disposed in the center hole, the avoiding hole is communicated with the center hole, the first voice coil is connected to the dome, the second voice coil is connected to the diaphragm and corresponds to the avoiding hole, one end of the first lead is connected to one end of the first voice coil near the dome, and the other end of the first lead extends to one side of the second voice coil near the diaphragm and passes through the avoiding hole to be connected to the external bonding pad.

3. The speaker according to claim 2, wherein the diaphragm includes a central portion, a ring portion and a connecting portion, two sides of the ring portion are respectively connected to the central portion and the connecting portion, the connecting portion is mounted on the housing, the central portion has the central hole and the avoiding hole, the avoiding hole is disposed at a corner portion of the diaphragm, and an extending direction of the avoiding hole is consistent with an extending direction of the long side of the first voice coil.

4. The speaker of claim 3, wherein the relief hole extends a length greater than a width of the second voice coil;

5. The speaker according to any one of claims 1 to 4, wherein there are two external pads, two external pads are respectively disposed on two opposite sides of the casing, two first leads are respectively disposed on two opposite short sides of the first voice coil, and one first lead passes through one of the avoiding holes and is connected to one of the external pads.

6. The loudspeaker according to any one of claims 2 to 4, wherein the vibration system further comprises a fixing member that fixes the intermediate portion of the first lead to the dome.

7. The loudspeaker according to any one of claims 1 to 4, wherein the external pad is provided on a surface of the housing facing away from the diaphragm; the limit magnet is four, four limit magnet interval is located the periphery of ring iron forms between two adjacent limit magnets and dodges the mouth, first lead wire process buckle again behind the dodging hole and extend through one dodge the mouth connect in external pad.

8. The loudspeaker of claim 7, wherein the magnetic circuit further comprises a central magnetic conducting member, a first side magnetic conducting member and a second side magnetic conducting member, the central magnetic conducting member is disposed on the surface of the central magnet facing the diaphragm, the first side magnetic conducting member is disposed on the surface of the ring iron facing the diaphragm, and the second side magnetic conducting member is disposed on the surface of the side magnet facing the diaphragm; an avoidance space is formed between the two adjacent second-side magnetic conduction pieces, and the avoidance space is communicated with the avoidance port.

9. The loudspeaker of claim 7, wherein a second lead is connected to the second voice coil, one end of the second lead is connected to an end of the second voice coil remote from the diaphragm, and the other end is connected to the external pad through another vent.

10. The loudspeaker of claim 1, wherein the housing includes a housing body and a plurality of mounting portions, the housing body has the mounting hole, the mounting portions are spaced apart from each other and are disposed on the periphery of the housing body, the periphery of the diaphragm is mounted on the housing body and covers the mounting hole, the magnetic yoke is fixed on the mounting portions, and the gap between two adjacent mounting portions corresponds to the avoiding hole.

11. A sound generating device comprising an electronic device housing and a speaker disposed within the electronic device housing, the speaker being as claimed in any one of claims 1 to 10.