Speaker and electronic device

Abstract

The embodiment of the application belongs to the technical field of electronic equipment, and particularly relates to a loudspeaker and an electronic device. The embodiment of the application aims to solve the technical problem that the electromagnetic driving force for driving the vibration of the voice coil is small, so that the sensitivity of the loudspeaker is insufficient. The loudspeaker and the electronic device of the embodiment of the application, the yoke iron comprises a bottom and a sleeve pipe located at one side of the bottom, a ring-shaped magnet is sleeved outside the sleeve pipe, the voice coil is sleeved on the sleeve pipe and located between the magnet and the sleeve pipe; the elastic wave is located in the area enclosed by the sleeve pipe, the outer edge of the elastic wave is connected with the voice coil, and the middle part of the elastic wave is connected with the yoke iron; the magnet and the voice coil are both located outside the elastic wave, the volume of the magnet and the length of the coil in the voice coil are not affected by the elastic wave, so that the volume of the magnet and the length of the coil in the voice coil can be set to be larger, and then the electromagnetic driving force for driving the vibration of the voice coil is increased, and the sensitivity of the loudspeaker is improved.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and more particularly to a speaker and an electronic device. Background Technology

[0002] Loudspeakers are commonly installed in terminal devices such as televisions, monitors, and tablets to play media audio. In related technologies, a loudspeaker includes a frame, a yoke, a magnet, a voice coil, and a spider. The frame is formed into a groove, and the yoke, which is cylindrical, is placed at the bottom of the groove. A mounting groove is located at the end of the yoke, and the magnet is placed inside the mounting groove. The voice coil is fitted around the outside of the yoke. The spider is annular, with its inner wall connected to the voice coil and its outer wall connected to the frame. During use, the voice coil is energized, causing it to vibrate along the centerline of the yoke, thus producing sound.

[0003] However, the spider limits the volume of the yoke and the length of the voice coil, resulting in a smaller electromagnetic driving force that drives the voice coil to vibrate, thus making the speaker less sensitive. Summary of the Invention

[0004] In view of this, embodiments of this application provide a loudspeaker and an electronic device to solve the technical problem that the electromagnetic driving force for driving the voice coil vibration is too small, resulting in insufficient sensitivity of the loudspeaker.

[0005] This application provides a loudspeaker, including: a yoke, a magnet, a voice coil, and a spider; the yoke includes a bottom and a sleeve located on one side of the bottom; the magnet is annular and is sleeved on the outside of the sleeve; the voice coil is sleeved on the outside of the sleeve and located between the sleeve and the magnet; the spider is located in the area enclosed by the sleeve.

[0006] With the above setup, the spider is located within the area enclosed by the sleeve, with its outer edge connected to the voice coil and its middle part connected to the yoke. The magnet and voice coil are both located outside the spider. The volume of the magnet and the length of the coil in the voice coil are not affected by the spider, allowing the volume of the magnet and the length of the coil in the voice coil to be set larger, thereby increasing the electromagnetic driving force that drives the voice coil to vibrate and improving the sensitivity of the loudspeaker.

[0007] In some embodiments that may include the above embodiments, the yoke further includes a boss, and the boss is located in the area enclosed by the sleeve, with the middle part of the spring abutting against the surface of the boss away from the bottom.

[0008] With this configuration, the inner wall of the bottom-facing section of the spring is connected to the boss. This connection between the spring and the bottom via the boss increases the distance between the spring and the bottom, allowing the spring to be positioned in a plane perpendicular to the central axis of the sleeve.

[0009] In some embodiments that can include the above-mentioned embodiments, the loudspeaker further comprises a vibrating plate, and an end surface of the voice coil facing the vibrating plate is fixedly connected to a side of the vibrating plate facing the bottom.

[0010] In some embodiments that can include the above-mentioned embodiments, the vibrating plate comprises a main body portion and an extension portion, the main body portion is annular, and the extension portion is cylindrical, and the extension portion extends from an inner edge of the main body portion in a direction towards the bottom; and an outer edge of the damper is fixedly connected to an inner wall of the extension portion.

[0011] In this way, the outer edge of the damper is connected to the voice coil through the extension portion, the extension portion can extend into the sleeve, the height of the boss can be reduced, and thus the mass of the loudspeaker can be reduced.

[0012] In some embodiments that can include the above-mentioned embodiments, the loudspeaker further comprises a support tube, the support tube is located between the damper and the voice coil and in an area enclosed by the sleeve, an outer edge of the damper is fixedly connected to an inner side wall of the support tube, and the support tube is fixedly connected to the voice coil.

[0013] In some embodiments that can include the above-mentioned embodiments, an end of the support tube and the voice coil away from the bottom are both fixedly connected to the vibrating plate, so as to realize the fixation between the support tube and the voice coil through the vibrating plate.

[0014] In some embodiments that can include the above-mentioned embodiments, the loudspeaker further comprises a dust cover, the dust cover covers a top of the area of the sleeve, and the support tube and the voice coil are both fixedly connected to an inner wall of the dust cover.

[0015] In some embodiments that can include the above-mentioned embodiments, the inner wall of the dust cover is provided with a fixing ring, and the support tube and the voice coil are both connected to the fixing ring.

[0016] In this way, the voice coil and the support tube are connected to the dust cover through the fixing ring, which improves the uniformity of the force received by the dust cover, and the connection between the voice coil and the support tube can also be realized through the fixing ring.

[0017] In some embodiments that can include the above-mentioned embodiments, the loudspeaker further comprises a pole piece, the pole piece is annular, and the pole piece covers a surface of the magnet away from the bottom.

[0018] In this way, the pole piece can adjust the magnetic field generated by the magnet, so that the magnetic field lines generated by the magnet are concentrated between the inner wall of the pole piece and the sleeve, thereby improving the magnetic field strength in which the coil is located, improving the electromagnetic driving force for driving the voice coil to move, and thus improving the sensitivity of the loudspeaker.

[0019] In some embodiments which can comprise the above-mentioned embodiments, the edge of the pole piece towards the voice coil protrudes from the edge of the magnet towards the voice coil. In this way, the distance between the pole piece and the sleeve is smaller than the distance between the magnet and the sleeve, thereby reducing the distance between the inner wall of the pole piece and the coil, to further increase the strength of the magnetic field in which the coil is located, and further increase the electromagnetic driving force for driving the voice coil to move.

[0020] In some embodiments which can comprise the above-mentioned embodiments, the loudspeaker further comprises a spider, and the spider is provided with a recess, and the bottom of the recess is provided with a fitting hole, and at least part of the voice coil extends from the bottom of the recess through the fitting hole.

[0021] In some embodiments which can comprise the above-mentioned embodiments, the edge of the fitting hole is in contact with the end surface of the pole piece away from the voice coil. The pole piece extends into the fitting hole to limit the relative position between the pole piece and the spider through the fitting hole, thereby improving the position accuracy between the pole piece and the spider.

[0022] In some embodiments which can comprise the above-mentioned embodiments, the plurality of elastic waves are stacked along the central axis of the sleeve, and each adjacent two elastic waves are separated. In this way, the plurality of elastic waves can improve the restoring force of the voice coil, and further limit the position of the voice coil in the annular gap.

[0023] In some embodiments which can comprise the above-mentioned embodiments, the boss has a plurality of fixing portions along the central axis of the sleeve, and each elastic wave is fixed on one fixing portion. In this way, each elastic wave is in a plane perpendicular to the central axis of the sleeve.

[0024] The embodiments of the present application also provide an electronic device, which comprises a shell and the loudspeaker as described above, and the loudspeaker is located in the shell.

[0025] The electronic device provided by the embodiments of the present application has the advantages that the yoke of the loudspeaker comprises a bottom and a sleeve located on one side of the bottom, the annular magnet is sleeved outside the sleeve, the voice coil is sleeved on the sleeve and located between the magnet and the sleeve, the elastic wave is located in the area enclosed by the sleeve, the outer edge of the elastic wave is connected with the voice coil, and the middle part of the elastic wave is connected with the yoke. The volume of the magnet and the length of the coil in the voice coil are not affected by the elastic wave, so that the volume of the magnet and the length of the coil in the voice coil can be set to be larger, thereby increasing the electromagnetic driving force for driving the voice coil to vibrate and improving the sensitivity of the loudspeaker. BRIEF DESCRIPTION OF DRAWINGS

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of an electronic device provided in an embodiment of this application;

[0028] Figure 2 A schematic diagram of the structure of the loudspeaker provided in the embodiments of this application. Figure 1 ;

[0029] Figure 3 Explosion of the loudspeaker provided in the embodiments of this application Figure 1 ;

[0030] Figure 4 A schematic diagram of the structure of the loudspeaker provided in the embodiments of this application. Figure 2 ;

[0031] Figure 5 A schematic diagram of the structure of the loudspeaker provided in the embodiments of this application. Figure 3 ;

[0032] Figure 6 Explosion of the loudspeaker provided in the embodiments of this application Figure 2 ;

[0033] Figure 7 This is a schematic diagram of the structure of the yoke in the loudspeaker provided in an embodiment of this application;

[0034] Figure 8 for Figure 7 Sectional view along the AA direction.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1: Speaker;

[0037] 2: Shell;

[0038] 10: Pot stand;

[0039] 20: Yoke;

[0040] 30: Voice coil;

[0041] 40: Magnet;

[0042] 50: Spiral wave;

[0043] 60: Vibrating plate;

[0044] 70: Extreme film;

[0045] 101: recess;

[0046] 102: fitting hole;

[0047] 201: sleeve;

[0048] 202: bottom;

[0049] 203: boss;

[0050] 204: annular gap;

[0051] 205: process hole;

[0052] 206: fixed part;

[0053] 301: coil;

[0054] 302: pipe body;

[0055] 601: main body part;

[0056] 602: extension part;

[0057] 603: support pipe;

[0058] 604: elastic folded ring;

[0059] 605: fixed ring;

[0060] 606: first annular groove;

[0061] 607: second annular groove;

[0062] 608: diffusion cavity;

[0063] 609: dust cover. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0065] The loudspeaker comprises a frame, a yoke, a magnet, a voice coil and a spring, the frame is provided with a groove, the yoke is arranged at the groove bottom, the yoke is provided with a mounting groove, the cylindrical magnet is arranged in the mounting groove, the magnet and the mounting groove have an annular gap, the voice coil is sleeved outside the magnet and located in the annular gap; the spring is annular, the inner wall of the spring is connected with the voice coil, and the outer wall of the spring is connected with the sidewall of the groove. In use, the voice coil is electrified, so that the voice coil vibrates along the center line direction of the yoke, thereby generating sound; in the process of voice coil vibration, the spring can provide restoring force for the voice coil, thereby enabling the voice coil to reciprocate.

[0066] Since the spring is sleeved outside the magnet and the voice coil, the spring limits the volume of the magnet and the length of the coil in the voice coil, thereby causing the electromagnetic driving force for driving the voice coil to vibrate to be small, so that the sensitivity of the loudspeaker is insufficient.

[0067] The embodiment provides an electronic device, including but not limited to a television, a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a sound box, a headset and the like.

[0068] As shown in Figure 1 The electronic device provided by the embodiment comprises a shell 2 and a loudspeaker 1, the loudspeaker 1 can be arranged inside the shell 2, so as to play media sound through the loudspeaker 1 when the electronic device works. Further, the electronic device can further comprise a display panel arranged on the shell 2, the display panel can be an organic light-emitting diode display panel (LED) or a liquid crystal display panel (LCD) and the like, and the loudspeaker 1 can play corresponding sound while the display panel displays an image. The display panel can be arranged on a first face of the shell 2, and correspondingly, the loudspeaker 1 can be arranged on the first face and located on both sides of the display panel; of course, the loudspeaker 1 can also be arranged on a second face opposite to the first face in the shell 2.

[0069] Scenario one

[0070] Please refer to Figure 2 and Figure 3In the embodiment, the loudspeaker 1 comprises a frame 10 and a vibrating plate 60, the frame 10 is provided with a groove 101. The vibrating plate 60 is arranged on the frame 10 to seal the groove 101. The vibrating plate 60 can be connected with the frame 10 by adhesive, and the vibrating plate 60 can also be connected with the frame 10 by screwing or clamping. Further, an elastic folded ring 604 in the shape of a ring can be arranged at the edge of the vibrating plate 60. The elastic folded ring 604 surrounds the vibrating plate 60, and the inner edge of the elastic folded ring 604 is connected with the outer edge of the vibrating plate 60, and the outer edge of the elastic folded ring 604 is connected with the frame 10. The vibrating plate 60 is connected with the frame 10 through the elastic folded ring 604, which can provide restoring force for the vibrating plate 60 when it vibrates, and can also reduce the resistance to the vibration of the vibrating plate 60.

[0071] As shown in Figure 2 and Figure 3 in the above implementation, the material constituting the elastic folded ring 604 can include elastic materials such as sponge and rubber, and further, the elastic folded ring 604 can be in the shape of a wave or a circular arc to further improve the elasticity of the elastic folded ring 604.

[0072] In the embodiment, the loudspeaker 1 further comprises a yoke 20, a magnet 40 and a voice coil 30. The groove 101 is provided with a matching hole 102. The yoke 20 comprises a bottom 202 and a sleeve 201 located on one side of the bottom 202. The central axis of the sleeve 201 is perpendicular to the plane on which the groove 101 is located. Part of the sleeve 201 extends into the groove 101 through the matching hole 102. Of course, the sleeve 201 can also be located outside the groove 101. The material constituting the sleeve 201 can include ferromagnetic materials such as steel and iron. The magnet 40 is in the shape of a ring. The magnet 40 is sleeved outside the sleeve 201. The material constituting the magnet 40 can include ferrite, neodymium iron boron and aluminum nickel cobalt. The inner wall of the magnet 40 and the outer wall of the sleeve 201 have an annular gap 204. The voice coil 30 is in the shape of a tube. The voice coil 30 is sleeved outside the sleeve 201 and located in the annular gap 204, so that the voice coil 30 is located in the magnetic field formed by the magnet 40.

[0073] For example, the central axes of the sleeve 201, the magnet 40 and the voice coil 30 can be arranged in a straight line.

[0074] Further, the bottom 202 of the yoke 20 can be in the shape of a plate. The sleeve 201 is arranged on the side of the bottom 202 facing the vibrating plate 60. The sleeve 201 and the bottom 202 can be an integral structure, and of course, the sleeve 201 and the bottom 202 can also be connected by welding, screwing or other means. Correspondingly, one end of the magnet 40 is attached to the side of the bottom 202 facing the vibrating plate 60. The magnet 40 can be connected with the bottom 202 by adhesive.

[0075] The end surface of the voice coil 30 facing the vibration plate 60 is fixedly connected to the side of the vibration plate 60 facing the bottom 202, so as to realize the connection between the voice coil 30 and the vibration plate 60, and then when the voice coil 30 is electrified and vibrates, the vibration plate 60 is driven to vibrate, thereby realizing sound generation.

[0076] The voice coil 30 can include a pipe body 302 and a coil 301 wound on the outer wall of the pipe body 302, and the pipe body 302 is sleeved on the sleeve 201. The material constituting the pipe body 302 can include plastic, insulating paper or other insulating materials, or the material constituting the pipe body 302 is copper, aluminum or other metal materials. When the material of the pipe body 302 is a metal material, the coil 301 needs to be insulatedly connected with the pipe body 302. The end of the pipe body 302 close to the vibration plate 60 is connected with the vibration plate 60. For example, the pipe body 302 can be connected with the vibration plate 60 by adhesive, and of course the pipe body 302 can also be connected with the vibration plate 60 by clamping. When the loudspeaker 1 works, the coil 301 is electrified. Since the coil 301 is located in the magnetic field formed by the magnet 40, the coil 301 is forced, and then drives the vibration plate 60 to vibrate through the pipe body 302, thereby generating sound.

[0077] Continuing to refer to Figure 2 and Figure 3 In the embodiment, the loudspeaker 1 further includes a spring 50, and the spring 50 is located in the area enclosed by the sleeve 201. The sleeve 201 is enclosed into a cylindrical cavity, and the spring 50 is arranged in the cavity. The outer edge of the spring 50 is connected with the voice coil 30, and the middle part of the spring 50 is connected with the yoke 20. The spring 50 has a certain elasticity, so as to make the voice coil 30 reciprocate in the annular gap 204 along the direction parallel to the central axis of the sleeve 201 by the elastic force of the spring 50 in the working process. In addition, the spring 50 can also limit the position of the voice coil 30 in the annular gap 204. For example, the central axis of the spring 50 can be parallel to the central axis of the sleeve 201, and further, the central axis of the spring 50 can be arranged in line with the central axis of the sleeve 201.

[0078] In the above implementation manner, the yoke 20 includes a boss 203, and the boss 203 is arranged on the bottom 202 and located in the area enclosed by the sleeve 201. The inner wall of the spring 50 facing the bottom 202 is connected with the boss 203. In this way, the spring 50 is connected with the bottom 202 through the boss 203, which can increase the distance between the spring 50 and the bottom 202, so that the spring 50 can be located in a plane perpendicular to the central axis of the sleeve 201.

[0079] The elastic wave 50 can be connected with the boss 203 through adhesive glue; for example, the middle part of the elastic wave 50 can be provided with a hole, and part of the boss 203 is arranged in the hole, and correspondingly, the inner edge of the elastic wave 50 is connected with the boss 203 through adhesive glue; of course, the elastic wave 50 can also cover the end of the boss 203 away from the bottom 202 and be connected with the end of the boss 203 away from the bottom 202 through adhesive glue, thereby improving the connection strength between the elastic wave 50 and the boss 203.

[0080] The electronic device provided by the embodiment includes the yoke 20 of the loudspeaker 1, the sleeve 201 on one side of the bottom 202, the ring-shaped magnet 40 sleeved outside the sleeve 201, the voice coil 30 sleeved on the sleeve 201 and located between the magnet 40 and the sleeve 201, the elastic wave 50 located in the area enclosed by the sleeve 201, the outer edge of the elastic wave 50 connected with the voice coil 30, and the middle part of the elastic wave 50 connected with the yoke 20. The magnet 40 and the voice coil 30 are both located outside the elastic wave 50, the volume of the magnet 40 and the length of the coil 301 in the voice coil 30 are not affected by the elastic wave 50, the volume of the magnet 40 and the length of the coil 301 in the voice coil 30 can be set to be larger, thereby increasing the electromagnetic driving force for driving the voice coil 30 to vibrate and improving the sensitivity of the loudspeaker 1.

[0081] In addition, as the demand for miniaturization of electronic devices gradually increases, the magnet 40 and the voice coil 30 are both arranged outside the elastic wave 50, which can reduce the thickness of the loudspeaker 1 while maintaining sufficient electromagnetic driving force and sensitivity, thereby facilitating the realization of ultrathin.

[0082] Continuing to refer to Figure 2 and Figure 3 In some embodiments, the vibrating piece 60 includes a main body part 601 and an extension part 602, the main body part 601 is annular, the extension part 602 is cylindrical, the extension part 602 extends from the inner edge of the main body part 601 in the direction towards the bottom 202, and the outer edge of the elastic wave 50 is fixedly connected with the inside of the extension part 602. In this way, the outer edge of the elastic wave 50 is connected with the voice coil 30 through the extension part 602, the extension part 602 can extend into the sleeve 201, the height of the boss 203 can be reduced, and the mass of the loudspeaker 1 can be reduced.

[0083] For example, the central axis of the extension part 602 is arranged in parallel with the central axis of the voice coil 30, and further, the central axis of the extension part 602 is arranged in line with the central axis of the voice coil 30. The elastic wave 50 can be connected with the inner wall of the extension part 602 through adhesive glue.

[0084] Further, a dust cover 609 can be arranged on the main body part 601 to seal the inner edge of the main body part 601.

[0085] With reference to the foregoing Figure 2 And Figure 3 In this embodiment, the loudspeaker 1 further comprises a pole piece 70, the pole piece 70 is annular, and the pole piece 70 covers the surface of the magnet 40 away from the bottom 202; the pole piece 70 can adjust the magnetic field generated by the magnet 40, so that the magnetic field lines generated by the magnet 40 are concentrated between the inner edge of the pole piece 70 and the sleeve 201, thereby improving the magnetic field strength in which the coil 301 is located, improving the electromagnetic driving force for driving the movement of the voice coil 30, and thereby improving the sensitivity of the loudspeaker 1. Exemplarily, the material constituting the pole piece 70 can include ferromagnetic materials such as iron and steel.

[0086] The central axis of the pole piece 70 and the central axis of the magnet 40 can be arranged in parallel, and further, the central axis of the pole piece 70 and the central axis of the magnet 40 are arranged in a same line.

[0087] In the above implementation, the edge of the pole piece 70 towards the voice coil 30 protrudes from the edge of the magnet 40 towards the voice coil 30. In this way, the distance between the pole piece 70 and the sleeve 201 is smaller than the distance between the magnet 40 and the sleeve 201, thereby reducing the distance between the inner edge of the pole piece 70 and the coil 301, to further improve the strength of the magnetic field in which the coil 301 is located, and further improve the electromagnetic driving force for driving the movement of the voice coil 30. Exemplarily, in the implementation in which the pole piece 70 and the magnet 40 are both circular rings, the central axis of the pole piece 70 and the central axis of the magnet 40 are arranged in a same line, and the inner diameter of the pole piece 70 is smaller than the inner diameter of the magnet 40.

[0088] In some implementations, the yoke 10 is provided with a groove 101, and the groove bottom of the groove 101 is provided with a fitting hole 102, and at least part of the voice coil 30 extends out of the groove bottom of the groove 101 through the fitting hole 102; the size of the fitting hole 102 is reasonably set so that the side wall of the fitting hole 102 is in contact with the end surface of the pole piece 70 away from the voice coil 30, that is, the pole piece 70 extends into the fitting hole 102 to limit the relative position between the pole piece 70 and the yoke 10 through the fitting hole 102, thereby improving the position accuracy between the pole piece 70 and the yoke 10.

[0089] Further, the pole piece 70 extends into the fitting hole 102, so that part of the yoke 10 can be in contact with the end of the magnet 40 away from the yoke 20, and the yoke 10 and the end of the magnet 40 away from the yoke 20 can be connected through adhesive glue, to realize the connection between the yoke 10 and the magnet 40.

[0090] In the embodiment, the bottom 202 of the yoke 20 can be provided with a process hole 205 (not shown), the process hole 205 is located in the area enclosed by the sleeve 201, and the process hole 205 is in communication with the sleeve 201; during the assembly of the loudspeaker 1, the clamp can be inserted into the process hole 205, and then the positioning of the vibration plate 60 and the yoke 20 can be realized through the clamp, which facilitates the assembly of the loudspeaker 1 and improves the assembly accuracy of the loudspeaker 1. Further, the process hole 205 can be multiple, and the multiple process holes 205 are arranged at intervals around the central axis of the sleeve 201, so as to facilitate the positioning of the vibration plate 60 and the yoke 20.

[0091] Scenario two

[0092] Please refer to Figure 4 In the embodiment, the loudspeaker 1 includes a spider 10 and a vibration plate 60, and the spider 10 is enclosed to form a groove 101. The vibration plate 60 covers the spider 10 to block the groove 101; the vibration plate 60 can be connected with the spider 10 by adhesive, of course, the vibration plate 60 can also be connected with the spider 10 by bolt connection or clamping; further, an annular elastic folded ring 604 can be arranged at the edge of the vibration plate 60, the elastic folded ring 604 is arranged around the vibration plate 60, and the inner edge of the elastic folded ring 604 is connected with the outer edge of the vibration plate 60, and the outer edge of the elastic folded ring 604 is connected with the spider 10; the vibration plate 60 is connected with the spider 10 through the elastic folded ring 604, which can provide restoring force for the vibration plate 60 when it vibrates, and also can reduce the resistance to the vibration of the vibration plate 60.

[0093] In the embodiment, the loudspeaker 1 further includes a yoke 20, a magnet 40 and a voice coil 30, the groove bottom of the groove 101 is provided with a matching hole 102, the yoke 20 includes a bottom and a sleeve 201 located at one side of the bottom, the central axis of the sleeve 201 is perpendicular to the plane where the groove bottom of the groove 101 is located, part of the sleeve 201 extends into the groove 101 through the matching hole 102, of course, the sleeve 201 can also be located outside the groove 101. The magnet 40 is annular, and the magnet 40 is sleeved outside the sleeve 201; the inner wall of the magnet 40 and the outer wall of the sleeve 201 have an annular gap 204, the voice coil 30 is tubular, the voice coil 30 is sleeved outside the sleeve 201, and the voice coil 30 is located in the annular gap 204, so that the voice coil 30 is located in the magnetic field formed by the magnet 40.

[0094] Further, the bottom 202 of the yoke 20 can be plate-shaped, and the sleeve 201 is arranged at one side of the bottom 202 facing the vibration plate 60; the sleeve 201 and the bottom 202 can be an integral structure, of course, the sleeve 201 and the bottom 202 can also be connected by welding, bolt connection and the like. Correspondingly, one end of the magnet 40 is attached to one side of the bottom 202 facing the vibration plate 60, and the magnet 40 can be connected with the bottom 202 by adhesive.

[0095] The end surface of the voice coil 30 facing the vibration plate 60 is fixedly connected to the side of the vibration plate 60 facing the bottom 202, so as to realize the connection between the voice coil 30 and the vibration plate 60, and then drive the vibration plate 60 to vibrate when the voice coil 30 is electrified and vibrates, thereby realizing sound generation.

[0096] The voice coil 30 can include a pipe body 302 and a coil 301 wound on the outer wall of the pipe body 302, and the pipe body 302 is sleeved on the sleeve 201. The material constituting the pipe body 302 can include plastic, insulating paper and other insulating materials, or the material constituting the pipe body 302 is copper, aluminum and other metal materials. When the material of the pipe body 302 is a metal material, the coil 301 needs to be insulatedly connected with the pipe body 302. The end of the pipe body 302 close to the vibration plate 60 is connected with the vibration plate 60. For example, the pipe body 302 can be connected with the vibration plate 60 through adhesive glue, and of course the pipe body 302 can also be connected with the vibration plate 60 through clamping. When the loudspeaker 1 works, the coil 301 is electrified, and since the coil 301 is located in the magnetic field formed by the magnet 40, the coil 301 is forced to vibrate, and then drives the vibration plate 60 to vibrate through the pipe body 302, thereby generating sound.

[0097] Continuing to refer to Figure 4 In the embodiment, the loudspeaker 1 further includes a spring 50, and the spring 50 is located in the area enclosed by the sleeve 201. The sleeve 201 is enclosed into a cylindrical cavity, and the spring 50 is arranged in the cavity. The outer edge of the spring 50 is connected with the voice coil 30, and the middle part of the spring 50 is connected with the yoke 20. The spring 50 has a certain elasticity, so that the voice coil 30 can reciprocate in the annular gap 204 along the direction parallel to the central axis of the sleeve 201 through the elastic force of the spring 50 in the working process. In addition, the spring 50 can also limit the position of the voice coil 30 in the annular gap 204. For example, the central axis of the spring 50 can be arranged parallel to the central axis of the sleeve 201, and further, the central axis of the spring 50 can be arranged collinearly with the central axis of the sleeve 201.

[0098] In the above implementation manner, the yoke 20 includes a boss 203, and the boss 203 is arranged on the bottom 202 and located in the area enclosed by the sleeve 201. The inner wall of the spring 50 facing the bottom 202 is connected with the boss 203. In this way, the spring 50 is connected with the bottom 202 through the boss 203, which can increase the distance between the spring 50 and the bottom 202, so that the spring 50 can be located in a plane perpendicular to the central axis of the sleeve 201.

[0099] The elastic wave 50 can be connected with the boss 203 through adhesive glue; for example, the middle part of the elastic wave 50 can be provided with a hole, and part of the boss 203 is arranged in the hole, and correspondingly, the inner edge of the elastic wave 50 is connected with the boss 203 through adhesive glue; of course, the elastic wave 50 can also cover the end of the boss 203 away from the bottom 202, and is connected with the end of the boss 203 away from the bottom 202 through adhesive glue, thereby improving the connection strength between the elastic wave 50 and the boss 203.

[0100] The electronic device provided by the embodiment includes the yoke 20 of the loudspeaker 1, the sleeve 201 located on one side of the bottom 202, the ring-shaped magnet 40 sleeved outside the sleeve 201, the voice coil 30 sleeved on the sleeve 201 and located between the magnet 40 and the sleeve 201, the elastic wave 50 located in the area enclosed by the sleeve 201, the outer edge of the elastic wave 50 connected with the voice coil 30, and the middle part of the elastic wave 50 connected with the yoke 20; the magnet 40 and the voice coil 30 are both located outside the elastic wave 50, the volume of the magnet 40 and the length of the coil 301 in the voice coil 30 are not affected by the elastic wave 50, the volume of the magnet 40 and the length of the coil 301 in the voice coil 30 can be set to be larger, thereby increasing the electromagnetic driving force for driving the voice coil 30 to vibrate and improving the sensitivity of the loudspeaker 1.

[0101] In addition, with the increasing demand for miniaturization of electronic devices, the magnet 40 and the voice coil 30 are both arranged outside the elastic wave 50, which can reduce the thickness of the loudspeaker 1 while maintaining sufficient electromagnetic driving force and sensitivity, thereby facilitating the realization of ultra-thin.

[0102] Continuing to refer to Figure 4 In some embodiments, the loudspeaker 1 further includes a support tube 603, the support tube 603 is located between the elastic wave 50 and the voice coil 30 and in the area enclosed by the sleeve 201, the outer edge of the elastic wave 50 is fixedly connected with the inner wall of the support tube 603, and the support tube 603 is fixedly connected with the voice coil 30.

[0103] The support tube 603 can be directly connected with the voice coil 30 to realize the fixation between the support tube 603 and the voice coil 30. Of course, the support tube 603 can also be indirectly connected with the voice coil 30 through a skeleton.

[0104] Exemplarily, the support tube 603 and the voice coil 30 are fixedly connected with the vibrating plate 60 at the end away from the bottom 202, so as to realize the fixation between the support tube 603 and the voice coil 30 through the vibrating plate 60. It is worth mentioning that the support tube 603 and the voice coil 30 can be directly connected with the vibrating plate 60, so as to realize the fixation between the support tube 603 and the voice coil 30 and the vibrating plate 60; of course, the support tube 603 and the voice coil 30 can also be indirectly connected with the vibrating plate 60 through other components.

[0105] In the embodiment, the loudspeaker 1 further comprises a dust cover 609 covering the top of the sleeve area, and the support tube 603 and the voice coil 30 are fixedly connected with the inner wall of the dust cover 609. The sleeve area is a columnar area surrounded by the outer wall of the sleeve 201, and the top of the sleeve area is the end of the columnar area away from the bottom 202.

[0106] Exemplarily, the vibrating plate 60 is provided with a through hole facing the sleeve 201, the dust cover 609 covers the vibrating plate 60 to block the through hole, and the outer edge of the vibrating plate 60 is connected with the basket 10; correspondingly, the voice coil 30 and the support tube 603 are connected with the vibrating plate 601.

[0107] Further, the support tube 603 and the voice coil 30 can be directly connected with the inner wall of the dust cover 609, so as to realize the direct connection between the support tube 603 and the voice coil 30 and the dust cover 609; of course, the support tube 603 and the voice coil 30 can also be indirectly connected with the inner wall of the dust cover 609 through other components, which is not limited in the embodiment.

[0108] In the above implementation manner, the inner wall of the dust cover 609 facing the bottom 202 is provided with a fixing ring 605, and the voice coil 30 and the support tube 603 are connected with the fixing ring 605. In this way, the voice coil 30 and the support tube 603 are connected with the dust cover 609 through the fixing ring 605, which improves the uniformity of the force borne by the dust cover 609, and the connection between the voice coil 30 and the support tube 603 can also be realized through the fixing ring 605.

[0109] The fixing ring 605 can be connected with the dust cover 609 through adhesive, and of course, the fixing ring 605 can also be connected with the dust cover 609 through clamping or bolt connection, which is not limited in the embodiment.

[0110] Continuing to refer to Figure 4In some implementations, the vibrating plate 601 can surround the diffusion cavity 608 in the shape of a truncated cone, and the central axis of the diffusion cavity 608 can be arranged in line with the central axis of the sleeve 201. The diffusion cavity 608 has openings at both ends along the central axis direction, and the smaller opening is a through hole. The dust cover 609 is arranged in the diffusion cavity 608 and connected between the side wall of the diffusion cavity 608 and the dust cover 602. Correspondingly, the side wall of the through hole is connected with the voice coil 30. In this way, the voice coil 30 is not only connected with the dust cover 602 through the fixing ring 605, but also connected with the vibrating plate 601, thereby improving the connection strength between the voice coil 30 and the vibrating plate 60, and avoiding the separation of the voice coil 30 and the vibrating plate 60.

[0111] In the implementation where the voice coil 30 includes the tube 302 and the coil 301 wound on the tube 302, the end of the tube 302 away from the bottom 202 is connected with the fixing ring 605, and the side wall of the through hole of the vibrating plate 601 is connected with the side wall of the tube 302.

[0112] In the above implementation, the first annular groove 606 and the second annular groove 607 can be arranged on the fixing ring 605 at intervals, the diameter of the first annular groove 606 is smaller than the diameter of the second annular groove 607, and the end of the support tube 603 away from the yoke 20 is inserted into the first annular groove 606, and the end of the tube 302 away from the yoke 20 is inserted into the second annular groove 607. In this way, the connection strength between the support tube 603 and the fixing ring 605 and the connection strength between the tube 302 and the fixing ring 605 can be further improved.

[0113] Further, the adhesive can be arranged in the first annular groove 606, and then the support tube 603 is inserted into the first annular groove 606, thereby realizing the connection between the support tube 603 and the fixing ring 605. Similarly, the adhesive can be arranged in the second annular groove 607, and then the tube 302 is inserted into the second annular groove 607, thereby realizing the connection between the tube 302 and the fixing ring 605.

[0114] The electronic device provided by the embodiment includes the yoke 20 of the loudspeaker 1, the yoke 20 includes the bottom 202 and the sleeve 201 located on one side of the bottom 202, the annular magnet 40 is sleeved outside the sleeve 201, the voice coil 30 is sleeved on the sleeve 201 and located between the magnet 40 and the sleeve 201, the damper 50 is located in the area surrounded by the sleeve 201, the outer edge of the damper 50 is connected with the voice coil 30, and the middle part of the damper 50 is connected with the yoke 20. The magnet 40 and the voice coil 30 are located outside the damper 50, the volume of the magnet 40 and the length of the coil 301 in the voice coil 30 are not affected by the damper 50, and the volume of the magnet 40 and the length of the coil 301 in the voice coil 30 can be set to be larger, thereby increasing the electromagnetic driving force for driving the voice coil 30 to vibrate and improving the sensitivity of the loudspeaker 1.

[0115] In addition, as the demand for miniaturization of electronic devices gradually increases, disposing both the magnet 40 and the voice coil 30 outside the bobbin 50 can reduce the thickness of the loudspeaker 1 while maintaining sufficient electromagnetic driving force and sensitivity, thereby facilitating the realization of ultra-thin loudspeakers.

[0116] With reference to the foregoing Figure 4 In this embodiment, the loudspeaker 1 further comprises a pole piece 70, which is annular and covers the surface of the magnet 40 facing away from the bottom 202. The pole piece 70 can adjust the magnetic field generated by the magnet 40, so that the magnetic field lines generated by the magnet 40 are concentrated between the inner wall of the pole piece 70 and the sleeve 201, thereby increasing the magnetic field strength in which the coil 301 is located and improving the electromagnetic driving force for driving the voice coil 30 to move, and further improving the sensitivity of the loudspeaker 1. For example, the material constituting the pole piece 70 can include ferromagnetic materials such as iron and steel.

[0117] Further, the central axis of the pole piece 70 is arranged in line with the central axis of the magnet 40, and the edge of the pole piece 70 facing the voice coil 30 protrudes from the edge of the magnet 40 facing the voice coil. In this way, the distance between the pole piece 70 and the sleeve 201 is less than the distance between the magnet 40 and the sleeve 201, thereby reducing the distance between the inner wall of the pole piece 70 and the coil 301, further increasing the strength of the magnetic field in which the coil 301 is located, and further improving the electromagnetic driving force for driving the voice coil 30 to move.

[0118] In some implementations, the yoke 10 is provided with a recess 101, and the bottom of the recess 101 is provided with a fitting hole 102. At least part of the voice coil 30 extends out of the bottom of the recess 101 through the fitting hole 102. The surface of the pole piece 70 facing away from the bottom 202 can be connected to the yoke 10 by adhesive or riveting. In this way, the connection area between the yoke 10 and the pole piece 70 is large, thereby improving the connection force between the yoke 10 and the pole piece 70.

[0119] With reference to the foregoing Figure 4 , Figure 7 , Figure 8 In this embodiment, the bottom 202 of the yoke 20 can be provided with a process hole 205, which is located within the area enclosed by the sleeve 201 and is in communication with the sleeve 201. During the assembly of the loudspeaker 1, a jig can be inserted into the process hole 205, thereby positioning the diaphragm 60 and the yoke 20 through the jig, facilitating the assembly of the loudspeaker 1 and improving the assembly accuracy of the loudspeaker 1. Further, the process hole 205 can be multiple, and the multiple process holes 205 are arranged around the central axis of the sleeve 201 to facilitate the positioning of the diaphragm 60 and the yoke 20.

[0120] Scenario three

[0121] Please refer to Figure 5、 Figure 6 The difference between the embodiment and the second scenario is that the plurality of elastic waves 50 are stacked along the central axis of the sleeve 201, and each adjacent two elastic waves 50 are separated, that is, the plurality of elastic waves 50 are arranged in parallel and at intervals. In this way, the plurality of elastic waves 50 can improve the restoring force of the voice coil 30, and can further limit the position of the voice coil 30 in the annular gap 204.

[0122] Further, the boss 203 includes a plurality of fixing portions 206, which are sequentially arranged along the central axis of the sleeve 201, and each elastic wave 50 is fixed on one fixing portion 206. In this way, each elastic wave 50 is in a plane perpendicular to the central axis of the sleeve 201. For example, the number of fixing portions 206 can be 2, 3, 4, etc., and the number of elastic waves 50 is the same as the number of fixing portions 206.

[0123] In some possible implementations, the fixing portions 206 close to the bottom 202 can be an integral structure with the bottom 202, and the adjacent two fixing portions 206 among the other fixing portions 206 can be connected by adhesive. Alternatively, the fixing portions 206 close to the bottom 202 can be an integral structure with the bottom 202, and the fixing portions 206 close to the bottom 202 are provided with connecting threaded holes, and the corresponding other fixing portions 206 are provided with mounting holes. The connecting bolts sequentially pass through the mounting holes on each fixing portion 206 and are matched with the connecting threaded holes, so as to connect the fixing portions 206 together.

[0124] Among the adjacent two fixing portions 206, the fixing portion 206 away from the bottom 202 does not completely cover the fixing portion 206 close to the bottom 202, that is, the end face of the fixing portion 206 close to the bottom 202 away from the bottom 202 leaves a mounting position, and the elastic wave 50 can be covered on the mounting position, so as to facilitate the installation of the elastic wave 50. Of course, the elastic wave 50 can also be clamped between the adjacent two fixing portions 206, so as to improve the connection strength between the elastic wave 50 and the fixing portion 206.

[0125] In other implementations, the plurality of fixing portions 206 can be an integral structure, and among the adjacent two fixing portions 206, the fixing portion 206 away from the bottom 202 does not completely cover the fixing portion 206 close to the bottom 202, so that the fixing portion 206 close to the bottom 202 away from the bottom 202 leaves a mounting position, and the elastic wave 50 is covered on the mounting position, so as to facilitate the installation of the elastic wave 50.

[0126] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0127] It should be noted that in the description of the present application, the terms "first", "second" are only used for the convenience of describing different components, and cannot be understood as indicating or implying a sequential relationship, relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features.

[0128] In the present application, unless otherwise explicitly specified, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally formed, it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0129] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A loudspeaker, characterized in that, include: Yoke, magnet, voice coil, support tube, and spider; The yoke includes a bottom and a sleeve located on one side of the bottom; The magnet is ring-shaped and is sleeved on the outside of the sleeve; The voice coil is sleeved on the outside of the sleeve and located between the sleeve and the magnet; The voice coil includes a tube body and a coil wound on the outer wall of the tube body. The tube body is sleeved on the outside of the sleeve, and the tube body and the support tube are fixedly connected. The support tube is located between the spider and the voice coil, and within the area enclosed by the sleeve, parallel to the sleeve, and the support tube is fixedly connected to the voice coil; The elastic wave is located within the area enclosed by the support tube, with its middle part connected to the yoke and its outer edge connected to the inner wall of the support tube.

2. The loudspeaker according to claim 1, characterized in that, The yoke also includes a boss, and the boss is located in the area enclosed by the sleeve, with the middle part of the spring abutting against the surface of the boss away from the bottom.

3. The loudspeaker according to claim 1 or 2, characterized in that, The loudspeaker also includes a diaphragm, and the end face of the voice coil facing the diaphragm is fixedly connected to the side of the diaphragm facing the bottom.

4. The loudspeaker according to claim 3, characterized in that, The support tube and the voice coil at the ends opposite to the bottom are both fixedly connected to the vibrating plate.

5. The loudspeaker according to claim 3, characterized in that, The loudspeaker also includes a dust cover that covers the top of the sleeve area, and the support tube and the voice coil are both fixedly connected to the inner wall of the dust cover.

6. The loudspeaker according to claim 5, characterized in that, The inner wall of the dust cover is provided with a fixing ring, and the support tube and the voice coil are both connected to the fixing ring.

7. The loudspeaker according to claim 2, characterized in that, The speaker also includes an annular electrode that covers the surface of the magnet opposite to the bottom.

8. The loudspeaker according to claim 7, characterized in that, The pole piece protrudes beyond the edge of the voice coil from the edge of the magnet facing the voice coil.

9. The loudspeaker according to claim 7, characterized in that, The loudspeaker also includes a frame with a groove, and a mating hole is provided on the bottom of the groove, with at least a portion of the voice coil extending from the bottom of the groove through the mating hole.

10. The loudspeaker according to claim 9, characterized in that, The edge of the mating hole is in contact with the end face of the electrode that is away from the voice coil.

11. The loudspeaker according to claim 1, characterized in that, There are multiple springs, which are stacked along the central axis of the sleeve, and each pair of adjacent springs are isolated from each other.

12. The loudspeaker according to claim 9, characterized in that, Along the central axis of the sleeve, the boss has multiple fixing parts, and each spring is fixed on one fixing part.

13. An electronic device, characterized in that, include: The housing and the speaker according to any one of claims 1-12, wherein the speaker is located within the housing.

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