WO2022160685A1 - 电子装置及终端 - Google Patents

电子装置及终端 Download PDF

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Publication number
WO2022160685A1
WO2022160685A1 PCT/CN2021/114312 CN2021114312W WO2022160685A1 WO 2022160685 A1 WO2022160685 A1 WO 2022160685A1 CN 2021114312 W CN2021114312 W CN 2021114312W WO 2022160685 A1 WO2022160685 A1 WO 2022160685A1
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WO
WIPO (PCT)
Prior art keywords
support piece
elastic support
elastic
electronic device
buffer
Prior art date
Application number
PCT/CN2021/114312
Other languages
English (en)
French (fr)
Inventor
强寿松
胡冰涛
Original Assignee
歌尔股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 歌尔股份有限公司 filed Critical 歌尔股份有限公司
Priority to US18/270,274 priority Critical patent/US20240107238A1/en
Publication of WO2022160685A1 publication Critical patent/WO2022160685A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/041—Centering
    • H04R9/043—Inner suspension or damper, e.g. spider
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction

Definitions

  • the present invention relates to the field of electro-acoustic technology, and in particular, to an electronic device and a terminal.
  • Electronic devices such as speakers, are important acoustic components in electronic equipment, which are transducers that convert electrical signals into acoustic signals.
  • electronic equipment which are transducers that convert electrical signals into acoustic signals.
  • the structural design of traditional loudspeakers is also constantly seeking innovation and changes. It not only needs to meet the development trend of thinning, but also pay more and more attention to the optimization of performance and the simplification of the process. and cost control.
  • the main purpose of the present invention is to provide an electronic device and a terminal, aiming at solving the problem that the centering support piece of the loudspeaker in the prior art is easily broken at the fulcrum position in the process of vibrating with the vibration unit.
  • the present invention proposes an electronic device, the electronic device comprises a vibration unit, a support and an elastic support piece, the first end of the elastic support piece is connected with the vibration unit, and the first end of the elastic support piece is connected to the vibration unit.
  • the two ends are connected with the bracket, so as to balance the reciprocating vibration of the vibration unit along the first direction;
  • a buffer block is provided on the bracket at a position corresponding to the elastic support piece, and a region of the elastic support piece close to the second end thereof is mounted on the buffer block.
  • the buffer block is formed with a perforation through which an area of the elastic support piece near the second end thereof passes through and is mounted on the perforation.
  • the perforation is a groove structure with one side open and the other side closed, the groove structure is formed on a side of the buffer block away from the bracket, and the opening of the groove structure is away from the bracket.
  • a region of the elastic support piece close to the second end thereof is installed in the groove structure through a flexible buffer member.
  • the flexible buffer member is glue filled in the groove structure.
  • the adhesive fills the gap.
  • the elastic support piece includes a first mounting portion, an elastic portion and a second mounting portion that are connected in sequence, the elastic portion is in a straight line and/or a curved structure, and the first mounting portion is far away from the elastic portion
  • One end of the second mounting portion is the first end, and the end of the second mounting portion away from the elastic portion is the second end; the projection area of the buffer block facing the elastic portion at least partially overlaps the elastic portion.
  • the elastic part comprises a third end connected with the first installation part and a fourth end connected with the second installation part, the elastic part is in the same direction or different from the third end
  • the direction is formed in a straight line and/or a curve extending to the fourth end;
  • a central area is disposed between the third end and the fourth end, the fourth end is disposed facing the central area, and the buffer block extends from the fourth end to the second end.
  • the first mounting portion is provided with a first buffer portion, and at least part of the structure of the first buffer portion is bent from the first end toward the first direction; and/or,
  • the second mounting part is provided with a second buffer part, the second buffer part and the elastic part are located in the same horizontal plane, the direction of the plane where the elastic part is located is different from the first direction, and the second buffer part is located in the same horizontal plane as the elastic part.
  • the buffer portion is bent toward the elastic portion from the second end.
  • the second buffer portion is in an arc-shaped segment, one end of the second buffer portion is connected to the vibration unit, and the other end of the second buffer portion is connected to the second installation portion in a smooth transition; or,
  • the second buffer portion includes a connecting section and an arc section, the connecting section is connected with the vibration unit, and the connecting section is connected with the second mounting section in a smooth transition through the arc section.
  • the bracket is provided with a pad, and the second buffer portion is welded with the pad.
  • a support block is further provided on the bracket, the support block is provided between the pad and the buffer block, and the second buffer portion is supported on the support block.
  • the support block is formed with a gap with one side open and the other side closed, the gap is formed on a side of the support block away from the bracket, and the opening of the gap is away from the bracket; the first The two buffers pass through the notch and are supported on the closed side of the notch.
  • the elastic portion is a planar structure arranged along a second direction, and the elastic portion is located in the same horizontal plane as the first mounting portion and the second mounting portion, and the first direction and the first mounting portion are located in the same horizontal plane.
  • the two directions are perpendicular to each other.
  • the elastic support piece is formed by winding a linear structure; alternatively, the elastic support piece is stamped and formed from a sheet structure.
  • the cross-section of the line segment of the elastic support piece is a closed annular structure formed by a curve and/or a straight line.
  • the vibration unit includes a diaphragm and a voice coil connected to the diaphragm; the first end is connected to the voice coil;
  • the bracket is a shell or a magnetic yoke.
  • the present invention also provides a terminal, where the terminal includes the electronic device described in any one of the above.
  • a buffer block is arranged on the bracket of the electronic device, and the buffer block is arranged near the second end of the elastic support piece, and the area of the elastic support piece near the second end can be installed on the buffer block.
  • a buffer block is arranged on the bracket, so that the second end of the elastic support piece connected to the pad of the bracket can be installed and supported on the buffer block.
  • the buffer block can play a buffering role and reduce the elastic support piece. The large displacement stress can eliminate the resonance swing of the elastic support piece, prevent the elastic support piece from breaking, ensure the effectiveness of the assembly between the elastic support piece and the bracket, and have high reliability.
  • FIG. 1 is a three-dimensional schematic diagram of an electronic device according to an embodiment of the present invention.
  • FIG. 2 is a partially enlarged schematic diagram of an electronic device according to an embodiment of the present invention.
  • FIG. 3 is a partially enlarged schematic diagram of an electronic device according to another embodiment of the present invention.
  • FIG. 4 is a schematic cross-sectional view of a buffer block and an elastic support piece in an electronic device according to an embodiment of the present invention
  • FIG. 5 is a schematic perspective view of an elastic support piece and a voice coil in an electronic device according to an embodiment of the present invention
  • FIG. 6 is a schematic front view of an elastic support piece and a voice coil in an electronic device according to an embodiment of the present invention
  • FIG. 7 is a three-dimensional schematic diagram of an elastic support piece in an electronic device according to an embodiment of the present invention.
  • FIG. 8 is a schematic plan view of an elastic support piece in an electronic device according to an embodiment of the present invention.
  • FIG. 9 is a schematic plan view of an elastic support piece in an electronic device according to another embodiment of the present invention.
  • FIG. 10 is a schematic plan view of an elastic support piece in an electronic device according to another embodiment of the present invention.
  • FIG. 11 is a schematic top view of the electronic device of the present invention.
  • the present invention provides an elastic support piece.
  • the electronic device includes a vibration unit 20 , a bracket 30 and an elastic support piece 10 , the first end 101 of the elastic support piece 10 is connected to the vibration unit 20 , and the second end 102 of the elastic support piece 10 is connected to the bracket 30 is connected to balance the reciprocating vibration of the vibration unit 20 in the first direction; a buffer block 60 is provided at the position corresponding to the elastic support piece 10 on the bracket 30, and the area on the elastic support piece 10 close to its second end 102 is installed on the buffer block 60 on.
  • the elastic support piece 10 of this embodiment is applied to electronic devices such as a sound-generating device, a motor or a multi-function vibration device, and this embodiment is described by taking the elastic support piece 10 applied to a sound-generating device as an example.
  • the electronic device includes an elastic support piece 10 and a vibration unit 20.
  • the elastic support piece 10 is used to balance the vibration of the vibration unit 20 along a first direction.
  • the first direction in this embodiment is the up-down direction shown in FIGS. 4, 6 and 7, That is, the elastic support piece 10 is used to balance the vibration of the vibration unit 20 in the up-down direction.
  • the electronic device further includes a bracket 30.
  • the vibration unit 20 includes a diaphragm and a voice coil 21 connected to the diaphragm; the first end 101 and the second end 102 of the elastic support piece 10 are respectively connected to the voice coil 21 and the bracket 30.
  • the bracket 30 is a housing or a yoke.
  • the vibration unit 20 can vibrate in the up-down direction in the casing of the electronic device, wherein the up-down direction is based on the directions shown in FIG. 4 , FIG. 6 and FIG. 7 , and the vibration unit 20
  • the vibration direction of the vibration unit 20 is represented by the vertical direction or the up-down direction
  • the direction perpendicular to the vibration of the vibration unit 20 is represented by the horizontal direction.
  • the first end 101 of the elastic support piece 10 is connected to the voice coil 21.
  • the voice coil 21 includes a skeleton 211 and a voice coil wire 212 wound around the skeleton 211.
  • the first end 101 can be connected to the skeleton.
  • the 211 can also be connected to the voice coil wire 212.
  • the second end 102 of the elastic support piece 10 is connected to the housing, so as to realize the assembly between the voice coil 21 , the elastic support piece 10 and the housing.
  • the first end 10111 of the elastic support piece 10 is connected with the voice coil 21
  • the second end 102 is connected with the magnetic yoke.
  • the vibrating unit 20 includes a vibrating membrane and a voice coil 21 connected to the vibrating membrane.
  • the voice coil 21 is usually wound by a metal wire.
  • the vibration direction of the voice coil 21 is represented by the vertical direction or the vertical direction
  • the vibration direction perpendicular to the voice coil 21 is represented by the left-right direction or the horizontal direction; since the diaphragm and the voice coil 21 are bonded by bonding Therefore, when the voice coil 21 vibrates up and down according to the electrical signal, it will also drive the diaphragm to vibrate and generate sound waves.
  • the position of the voice coil 21 will also change during the vibration of the voice coil 21, and the magnetic field lines located on the upper side of the magnetic gap of the electronic device are arc-shaped lines. Therefore, the voice coil 21
  • the ampere force received is not only in the vertical direction, but also includes the ampere force in other directions, which causes the voice coil 21 to be easily polarized in a non-vertical direction during the vibration process, which further affects the vibration of the diaphragm.
  • the elastic support 10 connecting the voice coil 21 and the bracket 30 can be provided to center the polarization of the voice coil 21, that is, to ensure that the voice coil 21 vibrates along the vibration direction within the magnetic gap of the electronic device .
  • the elastic support piece 10 is a flat spring.
  • the bracket 30 is a shell or a magnetic yoke. Since the shell can be used to carry the sounding device monomer, setting the bracket 30 as a shell can facilitate the fixing of the side of the elastic support piece 10 away from the vibration unit 20, The centering and supporting effect of the elastic support piece 10 is improved. Since most of the vibration unit 20 is close to the magnetic gap of the electronic device, and the distance between it and the magnetic yoke is relatively short, connecting the side of the elastic support piece 10 away from the vibration unit 20 to the magnetic yoke can save the elastic support piece 10 on the one hand. The distance is set, and it is convenient to improve the centering and supporting effect of the elastic support piece 10 .
  • the fixing method of the elastic support piece 10 in this embodiment includes various combinations: the first end 101 and the second end 102 of the elastic support piece 10 are respectively connected to the voice coil 21 and the shell, or, The first end 101 and the second end 102 of the elastic support piece 10 are respectively connected to the voice coil 21 and the magnetic yoke, which can better ensure the centering and support effect of the elastic support piece 10 .
  • a buffer block 60 is disposed on the bracket 30 corresponding to the elastic support piece 10 , and the area of the elastic support piece 10 close to the second end 102 thereof is mounted on the buffer block 60 .
  • the bracket 30 is provided with a buffer block 60 , and the buffer block 60 is arranged at a position close to the second end 102 of the elastic support piece 10 , and the elastic support piece 10 is close to the second end 102 of the elastic support piece 10 .
  • the area of the end 102 may be mounted on the bumper block 60 .
  • a buffer block 60 is provided on the bracket 30, so that the second end 102 of the elastic support piece 10 connected to the pad 40 of the bracket 30 can be installed and supported on the buffer block 60.
  • the buffer block 60 can play a buffering role, reduce the large displacement stress of the elastic support piece 10, eliminate the resonance swing of the elastic support piece 10, prevent the elastic support piece 10 from breaking, and ensure the effectiveness and reliability of the assembly between the elastic support piece 10 and the bracket 30. high.
  • the buffer block 60 of this embodiment is formed with a perforation, and the region of the elastic support piece 10 close to the second end 102 thereof passes through and is installed in the perforation.
  • the perforation is a groove structure 61 with one side open and the other side closed. As shown in FIG. 1 to FIG. 4 , the opening of the groove structure 61 is disposed upward, that is, the opening side of the groove structure 61 is the upper side, the closed side is the lower side, and the elastic support piece 10 is close to the second end 102 thereof.
  • the area can pass through the groove structure 61 , and the groove structure 61 can guide and support the elastic support piece 10 and eliminate the resonance swing of the elastic support piece 10 .
  • the region of the elastic support piece 10 close to the second end 102 thereof is installed in the groove structure 61 through a flexible buffer member.
  • the flexible buffer is the glue filled in the groove structure 61 .
  • silicone or rubber in the prior art can be used as the viscose glue. Since the silicone or rubber is flexible, it can buffer and protect the elastic support piece 10 passing through the groove structure 61, and further eliminate the elastic support. The resonant rocking of the sheet 10.
  • the elastic support piece 10 includes a first mounting portion 11, an elastic portion 13 and a second mounting portion 12 that are connected in sequence.
  • the elastic portion 13 is in a straight and/or curved structure, and the first mounting portion 11 is far away from the elastic portion.
  • One end of 13 is the first end 101
  • the end of the second mounting portion 12 away from the elastic portion 13 is the second end 102 ;
  • the elastic support piece 10 can be a bending structure such as a line, a narrow strip or a sheet that is integrally stamped from a metal sheet, or a bending structure formed by winding a single-strand metal wire, or a double-strand metal wire. Bending structures made of metal wires, etc.
  • the shape of the elastic portion 13 can be a polygonal spiral structure formed by bending and extending a linear structure, and specifically can be a quadrilateral, pentagon, hexagon, etc., or a circular or elliptical structure, or a straight line and a curve.
  • each bending of the elastic portion 13 is a bending line segment
  • the part of the bending line segment is a straight line
  • the other part is a curve.
  • the alternation here is not limited to one-to-one alternation, but can also be one-to-many, many-to-many alternation.
  • the arrangement of the elastic support piece 10 in this embodiment forms a horizontal constraint on the vibration unit 20 when the vibration unit 20 vibrates vertically, which can prevent the vibration unit 20 from being polarized, and the elastic support piece 10 follows the vibration unit 20 in the vertical direction. up displacement.
  • the elastic portion 13 of the elastic support piece 10 of the present embodiment extends in a straight line and/or a curve, which can reduce the stress concentration of the elastic portion 13 and increase the fatigue. Strength, reduce the risk of the elastic support piece 10 breaking, so that the elastic support piece 10 follows the vibration unit 20 in the process of vertical displacement, the elastic deformation of the elastic part 13 is large enough, even when the vibration displacement of the vibration unit 20 is large.
  • the compliance of the elastic support piece 10 is kept good, can provide sufficient displacement, does not affect the vibration of the vibration unit 20, and optimizes product performance.
  • the elastic support piece 10 in this embodiment is formed by bending and extending as a whole in a linear structure, which is simple and convenient to manufacture, simplifies the manufacturing process, has high manufacturing efficiency, and reduces the manufacturing cost.
  • the elastic support sheet 10 in this embodiment does not increase the height of the electronic device in the vertical direction, occupies less space, and is beneficial to the thinning of the product.
  • the projection area of the buffer block 60 facing the elastic portion 13 in this embodiment at least partially overlaps with the elastic portion 13 .
  • the elastic portion 13 is the main structure on the elastic support piece 10
  • the projection area of the buffer block 60 towards the elastic portion 13 overlaps with the elastic portion 13 at least partially.
  • the buffer block 60 can play a role in the main structure of the elastic support piece 10
  • the buffering effect further reduces the large displacement stress of the entire elastic support piece 10 , eliminates the resonance swing of the elastic support piece 10 , and prevents the elastic support piece 10 from breaking.
  • the buffer block 60 is disposed opposite to the elastic portion 13, and the projection area of the buffer block 60 toward the elastic portion 13 may overlap with the elastic portion 13 to eliminate the resonance swing of the elastic support piece 10 to the greatest extent.
  • the elastic portion 13 includes a third end 131 connected to the first mounting portion 11 and a fourth end 132 connected to the second mounting portion 12 , and the elastic portion 13 extends from the third end 131 in the same direction or in different directions It is formed in a straight line and/or a curve extending to the fourth end 132; a central area is provided between the third end 131 and the fourth end 132, the fourth end 132 is arranged facing the central area, and the buffer block 60 extends from the fourth end 132 to The two ends 102 extend.
  • the elastic support piece 10 is formed by bending and extending as a whole in a narrow and long linear structure, wherein the elastic part 13 can be a spiral structure, and the third end 131 thereof is clockwise toward the central area.
  • the helix extends to the central area, and is formed by extending counterclockwise from the central area to the fourth end 132 .
  • the elastic portion 13 may also have a square helical-like structure, and is formed by extending from the third end 131 to the central region along a straight line and a curve respectively to the central region, and then extending from the central region to the fourth end 132 along a curved line and a straight line respectively.
  • the elastic portion 13 can also be other structures formed by bending and extending a narrow and long linear structure.
  • the structural shape of the elastic portion 13 can be set according to actual use requirements.
  • the elastic support 10 of the present invention does not limit the structure of the elastic portion 13 .
  • the elastic support 10 of the present embodiment is formed by bending and extending of a narrow and long linear structure as a whole, which can reduce the stress concentration of the elastic support 10. The fatigue strength is increased, the risk of breakage of the elastic support piece 10 is reduced, and the compliance of the elastic support piece 10 is maintained well without affecting the vibration of the vibration unit 20 .
  • the cross section of the line segment of the elastic support piece 10 is a closed annular structure formed by a curve and/or a straight line. It can be understood that the cross section of the line segment of the elastic support piece 10 is the cross section of the bending section of the linear structure. For example, each time the elastic portion 13 is bent once is a bending line segment, and the cross section of the bending line segment is the elastic support piece. 10's line segment cross section.
  • the cross-section of the line segment of the elastic support sheet 10 in this embodiment can be circular, oval, square, rectangular, track-shaped, or quasi-rectangular, etc.
  • the elastic support sheet 10 can be directly formed by winding a circular or square wire, or winding a wire After the production is completed, the cross section of the wire is pressed to an oval or rectangular shape by punching, so that the radial force of the elastic support piece 10 is significantly increased, and even in the case of a large displacement of the vibration unit 20 at a low frequency, good listening can still be guaranteed. Effect.
  • the fourth end 132 of the elastic portion 13 is disposed directly to the central area, and the buffer block 60 extends from the fourth end 132 to the second end 102 , so that the buffer block 60 has a sufficient length so that the elastic support piece 10 The length of the upper region near the second end 102 supported on the buffer block 60 is extended, thereby improving the buffering effect on the elastic support piece 10 .
  • the first mounting portion 11 is provided with a first buffer portion 14, and at least part of the structure of the first buffer portion 14 is bent from the first end 101 toward the first direction; and/or, the second mounting portion 12 is provided with a
  • the second buffer portion 15, the second buffer portion 15 and the elastic portion 13 are located in the same horizontal plane, the direction of the plane where the elastic portion 13 is located is different from the first direction, and the second buffer portion 15 faces or faces away from the elastic portion from the second end 102 13 Bends.
  • the plane on which the elastic portion 13 is located in this embodiment may be a horizontal plane, or may be in other directions different from the vertical direction.
  • the plane where the elastic portion 13 is located is a horizontal plane as an example for illustration.
  • the second buffer portion 15 and the elastic portion 15 Located on the same horizontal plane, that is, the second buffer portion 15 is arranged horizontally, and the second buffer portion 15 is bent toward or away from the elastic portion 13 .
  • the first buffer portion 14 of the elastic support piece 10 can be in contact with the pad 40 of the voice coil 21, coated with solder paste, laser Soldering and melting solder paste fixes the elastic support piece 10 and the pad 40 of the voice coil 21 to realize the assembly of the elastic support piece 10 and the voice coil 21 .
  • the bracket 30 is provided with a pad 40, and the second buffer portion 15 is welded with the pad 40.
  • the second buffer portion 15 of the elastic support 10 can be in contact with the pad 40 of the bracket 30, and solder paste is applied to it.
  • the elastic support piece 10 of the present embodiment the bending direction of at least part of the structure of the first buffer part 14 is consistent with the vibration direction of the vibration unit 20 , that is, at least part of the structure of the first buffer part 14 is bent in the vertical direction, At least part of the structure of the first buffer part 14 is not affected by the vertical vibration of the vibration unit 20, so this part of the structure will not be pulled by the rotational force, has good fatigue resistance, and is less likely to form a solder joint between the elastic support 10 and the pad 40 In the case of breaking and falling off, the effectiveness of the assembly between the elastic support piece 10 and the voice coil 21 or the bracket 30 is ensured, and the reliability is high.
  • the first mounting portion 11 and the first buffer portion 14 are smoothly connected by transition, which can reduce stress concentration and ensure that the elastic support piece 10 will not break.
  • the elastic portion 13 is located in the middle area between the first mounting portion 11 and the second mounting portion 12 , and the second buffer portion 15 of this embodiment is bent toward or away from the elastic portion 13 , that is, the second buffer portion 15 It is bent toward or away from the middle area of the elastic support piece 10.
  • the second buffer portion 15 is bent toward the middle area of the elastic support piece 10, which not only increases the second buffer portion 15 and the pad 40 of the bracket 30.
  • the contact area of the elastic support piece 10 can be restrained when the vibration unit 20 vibrates, and the anti-fatigue property is good, and it is not easy for the solder joint of the elastic support piece 10 and the pad 40 of the bracket 30 to break and fall off.
  • the assembly between the elastic support piece 10 and the bracket 30 is effective and reliable.
  • the second buffer portion 15 is an arc-shaped segment, one end of the second buffer portion 15 is connected to the vibration unit 20 , and the other end of the second buffer portion 15 is connected to the second mounting portion 12 Smooth transition connections.
  • This embodiment is described by taking the second buffer portion 15 connected to the bracket 30 as an example.
  • the second buffer portion 15 is an arc-shaped segment, one end of the arc-shaped segment is connected to the bracket 30, and the other end of the arc-shaped segment is connected to the second mounting bracket 30.
  • the parts 12 are connected by a smooth transition, which can reduce stress concentration and ensure that the elastic support 10 will not break.
  • the second buffer portion 15 is an arc segment with a central angle greater than or equal to 90°; and/or the length of the second buffer portion 15 is greater than or equal to 1.5 mm. As shown in FIG. 11 , the second buffer portion 15 can be in the shape of a 3/4 arc, which can greatly reduce the influence of the vertical vibration of the vibration unit 20 on the elastic support piece 10 . And the length of the second buffer portion 15 is greater than or equal to 1.5 mm, so that the second buffer portion 15 has a sufficient length to be welded and fixed with the pad 40 .
  • the second buffer portion 15 includes a connecting segment 152 and an arc-shaped segment 151 , the connecting segment 152 is connected to the vibration unit 20 , and the connecting segment 152 is connected to the vibration unit 20 through the arc-shaped segment 151 .
  • the second mounting portion 12 is connected with a smooth transition. This embodiment is described by taking the second buffer portion 15 connected to the bracket 30 as an example.
  • the connecting section 152 of the second buffer portion 15 is connected to the bracket 30 , and the connecting section 152 is smoothed with the second mounting portion 12 through the arc section 151 .
  • the arc-shaped section 151 plays a buffering role between the second mounting portion 12 and the connecting section 152 to avoid stress concentration.
  • the arc segment 151 is a circular arc segment with an inner concave surface facing the elastic portion 13
  • the connecting segment 152 is a straight segment and the included angle with the extension line of the second mounting portion 12 is 15° ⁇ 160°, which can be appropriately
  • the elastic support piece 10 is restrained from being pulled by the rotational force, so that the influence of the vertical vibration of the vibration unit 20 on the elastic support piece 10 can be appropriately reduced.
  • the arc segment 151 and the connecting segment 152 are respectively set as a circular arc segment and a straight segment, which is convenient for manufacture.
  • the bracket 30 in this embodiment is further provided with a support block 70 , the support block 70 is disposed between the pad 40 and the buffer block 60 , and the second buffer portion 15 is supported on the support block 70 .
  • the arrangement of the support block 70 can support the second buffer portion 15 together with the buffer block 60 to eliminate the resonance swing of the elastic support piece 10 .
  • the support block 70 is formed with a gap 71 which is open on one side and closed on the other side, the gap 71 is formed on the side of the support block 70 away from the bracket 30, and the opening of the gap 71 is away from the bracket 30; the second buffer portion 15 passes through the gap 71 and supported on the closed side of the notch 71 .
  • the opening of the notch 71 is disposed upward, that is, the opening side of the notch 71 is the upper side, and the closed side is the lower side, and the second buffer portion 15 can pass through the notch 71 .
  • 71 guides and supports the elastic support piece 10 to eliminate the resonance swing of the elastic support piece 10 .
  • the elastic portion 13 in this embodiment is a planar structure arranged along the second direction, and the elastic portion 13 and the first mounting portion 11 and the second mounting portion 12 are located in the same horizontal plane, and the first direction and the second direction are perpendicular to each other.
  • the second direction of this embodiment is the horizontal direction or the left-right direction as shown in FIG. 4 , FIG. 6 and FIG. 7
  • the elastic portion 13 is a horizontally arranged plane structure, and the elastic portion 13 is installed with the first mounting portion 11 and the second mounting portion 13 .
  • the part 12 is located on the same horizontal plane, that is, the elastic part 13 and the first installation part 11 and the second installation part 12 are all arranged in a horizontal plane structure.
  • the number of elastic support pieces 10 is at least two, and at least two elastic support pieces 10 are evenly spaced along the outer circumference of the voice coil 21 .
  • the number of the elastic support pieces 10 is three, and the three elastic support pieces 10 are evenly spaced along the outer circumference of the vibration unit 20 to enhance the centering effect of the vibration unit 20.
  • the support piece 10 forms at least three constraints on the voice coil 21 in the horizontal direction, which can prevent the vibration unit 20 from being polarized, and the elastic support piece 10 follows the vibration unit 20 to move in the vertical direction, enhancing the Centering effect on the vibration unit 20 .
  • the number of elastic support pieces 10 may also be four, five, six or other numbers.
  • the number of the elastic support pieces 10 in the electronic device of the present invention can be flexibly adjusted according to the actual situation, and the present invention does not limit the number of the elastic support pieces 10 .
  • the electronic device may include at least one elastic group 50, and one elastic group 50 includes four elastic support pieces 10 located on the same horizontal plane.
  • the line widths or materials of the four elastic support pieces 10 may be the same or different.
  • two of the elastic supports 10 are made of phosphor bronze, and their line width can be set to 0.4mm, and the material of the other elastic support 10 is beryllium copper , then its line width can be set to 0.3mm, and there is another elastic support piece 10 made of 316 steel, so its line width can be set to 0.2mm.
  • the elastic support piece 10 of the conductor structure has the function of conducting electricity, which can transmit electrical signals to the vibration unit 20 of the electronic device.
  • the elastic support piece 10 passes through the first mounting portion 11 and the voice coil in the vibration unit 20
  • the wiring part 21 is electrically connected and matched, and the second mounting part 12 is connected to an external power source, and then the voice coil 21 and the external electrical signal are transmitted through the elastic support piece 10;
  • the function is to constrain the reciprocating vibration of the vibration unit 20 according to the vibration offset state of the vibration unit 20, so that the vibration unit 20 is stabilized in the preset central area, and the polarization of the vibration unit 20 is prevented, so that the reciprocating vibration of the vibration unit 20 is prevented. more stable. Therefore, the elastic support piece 10 has both the functions of conduction and centering, and realizes the integration of these two functions.
  • the electronic device may include a plurality of elastic groups 50 , such as two or three elastic groups 50 , the plurality of elastic groups 50 are arranged at intervals along the height direction of the voice coil 21 , and all the elastic support pieces 10 of each elastic group 50 are located in the same horizontal plane.
  • the two elastic groups 50 are arranged at intervals along the vertical direction of the vibration unit 20, and each elastic group 50 group includes four elastic support pieces 10, and the four elastic support pieces 10 are located in the same position.
  • the eight elastic support pieces 10 of the two elastic groups 50 are arranged in a dislocation in the vertical direction, which not only enhances the centering effect of the vibration unit 20, but also has good symmetry and flatness of the mechanical stiffness Kms, which can satisfy the large displacement. Fatigue requirements.
  • the multiple elastic groups 50 enhance the centering effect of the vibration unit 20 on the one hand, and reduce stress concentration on the other hand, which can correspondingly reduce the line width of the elastic support piece 10 , and is easier to manufacture.
  • the number and arrangement of the elastic groups 50, as well as the shape, structure, line width, material and properties of each elastic group 50 can be flexibly set according to actual needs, with good compatibility and wide application range.
  • the present invention also provides a terminal, where the terminal includes the above-mentioned electronic device.
  • the terminal may be a computer, a mobile phone, a sound box, a car sound box applied to a car, and the like.
  • the terminal includes the above-mentioned electronic device, and the specific structure of the electronic device and its elastic support piece 10 refers to the above-mentioned embodiments. Since the terminal adopts all the technical solutions of all the above-mentioned embodiments, it has at least the advantages brought by the technical solutions of the above-mentioned embodiments. All the beneficial effects will not be repeated here.

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  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
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  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

本发明公开一种电子装置及终端，所述电子装置包括振动单元、支架和弹性支片，所述弹性支片的第一端与所述振动单元连接，所述弹性支片的第二端与所述支架连接，以用于平衡所述振动单元沿第一方向往复振动；所述支架上对应所述弹性支片的位置设置有缓冲块，所述弹性支片上靠近其第二端的区域安装在所述缓冲块上。本发明在支架上设置缓冲块，使得弹性支片上与支架焊盘连接的第二端处可安装并支撑在缓冲块上，在振动单元振动时，缓冲块可起到缓冲作用，降低弹性支片的大位移应力，消除弹性支片的共振摇摆，防止弹性支片断裂，保证弹性支片与支架之间的装配有效性，可靠性高。

Description

电子装置及终端 技术领域
本发明涉及电声技术领域，特别涉及一种电子装置及终端。
背景技术
电子装置，比如扬声器是电子设备中的重要声学部件，其为一种把电信号转变为声信号的换能器件。当前随着技术的不断进步与革新，传统的扬声器的结构设计也在不断地求新、求变，既需要满足薄型化的发展趋势，还要越来越注重性能的优化，并兼顾工艺的简化和成本的控制。
现有的扬声器中，定心支片与支架装配时，定心支片上处于支点外的直线段与支架焊盘接触，涂覆锡膏，激光焊接融化锡膏将定心支片与焊盘进行固定。在装配后，定心支片在支点外的直线段会有悬空，由于扬声器工作为全频段，在不同频率下会产生共振，定心支片在随着振动单元振动的过程中其容易在支点位置处产生断裂，造成定心支片与支架之间的装配失效，可靠性低。
发明内容
本发明的主要目的是提出一种电子装置及终端，旨在解决现有技术中扬声器的定心支片在随着振动单元振动的过程中其容易在支点位置处产生断裂的问题。
为实现上述目的，本发明提出一种电子装置，所述电子装置包括振动单元、支架和弹性支片，所述弹性支片的第一端与所述振动单元连接，所述弹性支片的第二端与所述支架连接，以用于平衡所述振动单元沿第一方向往复振动；
所述支架上对应所述弹性支片的位置设置有缓冲块，所述弹性支片上靠近其第二端的区域安装在所述缓冲块上。
优选地，所述缓冲块形成有穿孔，所述弹性支片上靠近其第二端的区域 穿过并安装于所述穿孔。
优选地，所述穿孔为一侧开口另一侧封闭的凹槽结构，所述凹槽结构形成于所述缓冲块上背离所述支架的一侧，且所述凹槽结构的开口背离所述支架。
优选地，所述弹性支片上靠近其第二端的区域通过柔性缓冲件安装于所述凹槽结构内。
优选地，所述柔性缓冲件为填充于所述凹槽结构内的粘胶。
优选地，所述弹性支片上靠近其第二端的区域与所述凹槽结构的内壁之间具有间隙，所述粘胶填充所述间隙。
优选地，所述弹性支片包括依次连接的第一安装部、弹性部和第二安装部，所述弹性部呈直线和/或曲线弯折结构，所述第一安装部远离所述弹性部的一端为所述第一端，所述第二安装部远离所述弹性部的一端为所述第二端；所述缓冲块朝向所述弹性部的投影区与所述弹性部至少部分重叠。
优选地，所述弹性部包括与所述第一安装部连接的第三端，以及与所述第二安装部连接的第四端，所述弹性部由所述第三端沿同一方向或不同方向呈直线和/或曲线延伸至所述第四端形成；
所述第三端和所述第四端之间设有中心区域，所述第四端正对所述中心区域设置，所述缓冲块自所述第四端向所述第二端延伸。
优选地，所述第一安装部设置有第一缓冲部，所述第一缓冲部的至少部分结构自所述第一端朝所述第一方向弯折；且/或，
所述第二安装部设置有第二缓冲部，所述第二缓冲部与所述弹性部位于同一水平面内，所述弹性部所在平面的方向不同于所述第一方向，且所述第二缓冲部自所述第二端朝所述弹性部弯折。
优选地，所述第二缓冲部呈弧形段，所述第二缓冲部的一端与所述振动单元连接，且所述第二缓冲部的另一端与所述第二安装部平滑过渡连接；或者，
所述第二缓冲部包括连接段和弧形段，所述连接段与所述振动单元连接，且所述连接段通过所述弧形段与所述第二安装部平滑过渡连接。
优选地，所述支架设置有焊盘，所述第二缓冲部与所述焊盘焊接。
优选地，所述支架上还设置有支撑块，所述支撑块设置于所述焊盘与所 述缓冲块之间，且所述第二缓冲部支撑于所述支撑块。
优选地，所述支撑块形成有一侧开口另一侧封闭的缺口，所述缺口形成于所述支撑块上背离所述支架的一侧，且所述缺口的开口背离所述支架；所述第二缓冲部穿过所述缺口并支撑于所述缺口的封闭侧。
优选地，所述弹性部为沿第二方向布置的平面结构，且所述弹性部与所述第一安装部及所述第二安装部位于同一水平面内，所述第一方向与所述第二方向相互垂直。
优选地，所述弹性支片由线状结构绕制而成；又或者，所述弹性支片由片状结构冲压成型。
优选地，所述弹性支片的线段横截面呈曲线和/或直线形成的闭合环状结构。
优选地，所述振动单元包括振膜和与所述振膜连接的音圈；所述第一端与所述音圈连接；
且/或，所述支架为外壳或者磁轭。
本发明还提出一种终端，所述终端包括如上任一项所述的电子装置。
本发明的技术方案中，在电子装置的支架上设置有缓冲块，且缓冲块设置在靠近弹性支片上第二端的位置，且弹性支片上靠近其第二端的区域可安装在该缓冲块上。本发明在支架上设置缓冲块，使得弹性支片上与支架焊盘连接的第二端处可安装并支撑在缓冲块上，在振动单元振动时，缓冲块可起到缓冲作用，降低弹性支片的大位移应力，消除弹性支片的共振摇摆，防止弹性支片断裂，保证弹性支片与支架之间的装配有效性，可靠性高。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本发明一实施例电子装置的立体示意图；
图2为本发明一实施例电子装置的局部放大示意图；
图3为本发明另一实施例电子装置的局部放大示意图；
图4为本发明一实施例电子装置中缓冲块与弹性支片的截面示意图；
图5为本发明一实施例电子装置中弹性支片和音圈的立体示意图；
图6为本发明一实施例电子装置中弹性支片和音圈的主视示意图；
图7为本发明一实施例电子装置中弹性支片的立体示意图；
图8为本发明一实施例电子装置中弹性支片的平面示意图；
图9为本发明另一实施例电子装置中弹性支片的平面示意图；
图10为本发明又一实施例电子装置中弹性支片的平面示意图；
图11为本发明电子装置的俯视示意图。
附图标号说明：
标号 名称 标号 名称
10 弹性支片 20 振动单元
101 第一端 21 音圈
102 第二端 211 骨架
11 第一安装部 212 音圈线
12 第二安装部 30 支架
13 弹性部 40 焊盘
131 第三端 50 弹性群
132 第四端 60 缓冲块
14 第一缓冲部 61 凹槽结构
15 第二缓冲部 70 支撑块
151 弧形段 71 缺口
152 连接段    
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明，若本发明实施例中有涉及方向性指示(诸如上、下、左、右、前、后……)，则该方向性指示仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，若本发明实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。
本发明中对“上”、“下”、“前”、“后”、“左”、“右”等方位的描述以图4、图6和图7所示的方位为基准，仅用于解释在图4、图6和图7所示姿态下各部件之间的相对位置关系，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
本发明提出一种弹性支片。
如图1至图11所示，电子装置包括振动单元20、支架30和弹性支片10，弹性支片10的第一端101与振动单元20连接，弹性支片10的第二端102与支架30连接，以用于平衡振动单元20沿第一方向往复振动；支架30上对应弹性支片10的位置设置有缓冲块60，弹性支片10上靠近其第二端102的区域安装在缓冲块60上。
本实施例的弹性支片10应用于发声装置、马达或多功能振动装置等电子装置中，本实施例以弹性支片10应用于发声装置为例进行说明。电子装置包括弹性支片10和振动单元20，弹性支片10用于平衡振动单元20沿第一方向振动，本实施例的第一方向为图4、图6和图7所示的上下方向，即，弹性支片10用于平衡振动单元20沿上下方向振动。电子装置还包括支架30，在一 实施例中，振动单元20包括振膜和与振膜连接的音圈21；弹性支片10第一端101和第二端102分别与音圈21和支架30对应连接，且/或，支架30为外壳或者磁轭。
可以理解地，振动单元20在接通电信号后，可在电子装置的外壳内发生上下方向的振动，其中，上下方向以图4、图6和图7所示的方向为准，振动单元20的振动方向用竖直方向或上下方向表示，垂直于振动单元20振动的方向用水平方向表示。在一实施例中，弹性支片10的第一端101与音圈21连接，具体地，音圈21包括骨架211和绕设于骨架211外的音圈线212，第一端101可与骨架211连接，也可与音圈线212连接。弹性支片10的第二端102与外壳连接，实现音圈21、弹性支片10及外壳之间的装配。在另一实施例中，弹性支片10的第一端10111与音圈21连接，第二端102与磁轭连接。
该电子装置中，振动单元20包括振膜和与振膜连接的音圈21，音圈21通常是由金属线缠绕而成的，当音圈21接通电信号之后，在电子装置的磁场中受安培力的作用上下振动，音圈21的振动方向用竖直方向或上下方向表示，垂直于音圈21振动的方向用左右方向或水平方向表示；由于振膜与音圈21是通过粘结等方式固定结合为一体的，因此，音圈21根据电信号上下振动时也会带动振膜振动，产生声波。
由于电子装置的磁场只是相对均匀的并不是绝对的，音圈21振动过程中音圈21的位置也会变化，且位于电子装置的磁间隙上侧的磁力线为弧形线，因此，音圈21受到的安培力并不仅仅是竖直方向的，也包含其他方向的安培力，这就造成音圈21在振动过程中容易发生非竖直方向的偏振，进一步会影响振膜的振动。
为了防止发生上述情况的偏振，设置连接音圈21和支架30的弹性支片10可以对音圈21的偏振进行定心支撑，即，保证音圈21在电子装置的磁间隙内沿振动方向振动。在一实施例中，弹性支片10为平面弹簧。
在一实施例中，支架30为外壳或者磁轭，由于外壳可以用于对发声装置单体进行承载，将支架30设置为外壳，可以便于弹性支片10背离振动单元20的一侧进行固定，提高弹性支片10的定心支撑效果。由于振动单元20的大部分都靠近电子装置的磁间隙，其与磁轭的距离较近，将弹性支片10背离振动单元20的一侧连接至磁轭，一方面可以节省弹性支片10的设置距离， 并且便于提高弹性支片10的定心支撑效果。需要说明的是，如上所述，本实施例中的弹性支片10固定方式包括多种的组合：弹性支片10的第一端101和第二端102分别连接音圈21和外壳、或者，弹性支片10的第一端101和第二端102分别连接音圈21和磁轭，均能较好的保证弹性支片10的定心支撑效果。
本实施例支架30上对应弹性支片10的位置设置有缓冲块60，弹性支片10上靠近其第二端102的区域安装在缓冲块60上。具体地，如图1至图4所示，支架30上设置有缓冲块60，且缓冲块60设置在靠近弹性支片10上第二端102的位置，且弹性支片10上靠近其第二端102的区域可安装在该缓冲块60上。本实施例在支架30上设置缓冲块60，使得弹性支片10上与支架30焊盘40连接的第二端102处可安装并支撑在缓冲块60上，在振动单元20振动时，缓冲块60可起到缓冲作用，降低弹性支片10的大位移应力，消除弹性支片10的共振摇摆，防止弹性支片10断裂，保证弹性支片10与支架30之间的装配有效性，可靠性高。
具体地，本实施例的缓冲块60形成有穿孔，弹性支片10上靠近其第二端102的区域穿过并安装于穿孔。进一步地，穿孔为一侧开口另一侧封闭的凹槽结构61，凹槽结构61形成于缓冲块60上背离支架30的一侧，且凹槽结构61的开口背离支架30。如图1至图4所示，凹槽结构61的开口朝上设置，即，凹槽结构61的开口侧为上侧，封闭侧为下侧，弹性支片10上靠近其第二端102的区域可穿过该凹槽结构61，凹槽结构61对弹性支片10起到导向和支撑作用，消除弹性支片10的共振摇摆。
更进一步地，弹性支片10上靠近其第二端102的区域通过柔性缓冲件安装于凹槽结构61内。柔性缓冲件为填充于凹槽结构61内的粘胶。在一实施例中，粘胶可采用现有技术中的硅胶或橡胶，由于硅胶或橡胶具有柔性，可对穿过凹槽结构61的弹性支片10起到缓冲和保护作用，进一步消除弹性支片10的共振摇摆。
如图4所示，弹性支片10上靠近其第二端102的区域与凹槽结构61的内壁之间具有间隙，粘胶填充间隙。可以理解地，弹性支片10上穿过凹槽结构61的部分在凹槽结构61内是悬空设置的，弹性支片10与凹槽结构61的内部之间具有间隙，而粘胶可填满整个间隙，从而对弹性支片10的外周形成 全方位的缓冲和保护作用。
本实施例中，弹性支片10包括依次连接的第一安装部11、弹性部13和第二安装部12，弹性部13呈直线和/或曲线弯折结构，第一安装部11远离弹性部13的一端为第一端101，第二安装部12远离弹性部13的一端为第二端102；缓冲块60朝向弹性部13的投影区与弹性部13至少部分重叠。
具体地，弹性支片10可以是金属板材一体冲压成型的线状、窄条状或片状等弯折结构，也可以采用单股金属线绕制而成的弯折结构，还可以是双股金属线绕制而成的弯折结构等。弹性部13的形状可以呈线状结构弯折延伸形成的多边形的螺旋状结构，具体可以为四边形、五边形、六边形等，或者为圆形、椭圆形的结构，或者为直线与曲线形状结合的结构，例如，弹性部13中每弯折一次为一个弯折线段，弯折线段的部分为直线，另一部分为曲线，其具体可以为曲线与直线交替连接的形状，需要说明的是，此处的交替并不限于一一交替，还可以是一与多、多与多的交替。
本实施例弹性支片10的设置，在振动单元20竖直振动时对振动单元20形成水平方向上的约束，可遏制振动单元20发生偏振，且弹性支片10跟随振动单元20在竖直方向上位移。相较于现有片形弹波状的定心支片而言，本实施例的弹性支片10中弹性部13呈直线和/或曲线延伸，可减小弹性部13的应力集中，增加了疲劳强度，降低弹性支片10断裂的风险，使得弹性支片10跟随振动单元20在竖直方向位移的过程中，弹性部13发生弹性形变足够大，即使在振动单元20振动位移较大的情况下，弹性支片10的顺性保持良好，可提供足够的位移，不影响振动单元20的振动，优化产品性能。并且，本实施例弹性支片10整体呈线状结构弯折延伸形成，制作简单方便，简化了制作工艺，制作效率高，降低了制作成本。并且，本实施例弹性支片10不会使电子装置沿竖直方向上高度增加，占用空间小，利于产品的薄型化。
本实施例的缓冲块60朝向弹性部13的投影区与弹性部13至少部分重叠。可以理解地，弹性部13为弹性支片10上的主体结构，缓冲块60朝向弹性部13的投影区与弹性部13至少部分重叠，可通过缓冲块60对弹性支片10的主体结构起到缓冲作用，进而降低整体弹性支片10的大位移应力，消除弹性支片10的共振摇摆，防止弹性支片10断裂。在一实施例中，缓冲块60是与弹性部13正对设置的，缓冲块60朝向弹性部13的投影区可与弹性部13全部 重叠，以最大程度地消除弹性支片10的共振摇摆。
本实施例中，弹性部13包括与第一安装部11连接的第三端131，以及与第二安装部12连接的第四端132，弹性部13由第三端131沿同一方向或不同方向呈直线和/或曲线延伸至第四端132形成；第三端131和第四端132之间设有中心区域，第四端132正对中心区域设置，缓冲块60自第四端132向第二端102延伸。
如图1至图11所示，弹性支片10整体呈窄长形的线状结构弯折延伸形成，其中，弹性部13可以呈螺旋形结构，通过其第三端131向中心区域沿顺时针螺旋延伸至中心区域，再由中心区域沿逆时针延伸至第四端132形成。弹性部13也可以呈方形的类螺旋结构，通过其第三端131向中心区域分别沿直线和曲线延伸至中心区域，再由中心区域分别沿曲线和直线延伸至第四端132形成。弹性部13还可以是由窄长形的线状结构弯折延伸形成的其他结构，弹性部13的结构状可根据实际使用需求设置，本发明弹性支片10对弹性部13的结构不作限制。相较于现有片形弹波状的定心支片而言，本实施例的弹性支片10整体呈窄长形的线状结构弯折延伸形成，可减小弹性支片10的应力集中，增加了疲劳强度，降低弹性支片10断裂的风险，且弹性支片10的顺性保持良好，不影响振动单元20的振动。
本实施例中，弹性支片10的线段横截面呈曲线和/或直线形成的闭合环状结构。可以理解地，弹性支片10的线段横截面为线状结构折弯段的横截面，比如，弹性部13中每弯折一次为一个弯折线段，弯折线段的横截面即为弹性支片10的线段横截面。本实施例弹性支片10的线段横截面可以为圆形、椭圆形、方形、长方形、跑道形或类矩形等，弹性支片10可直接通过圆形或方形线材绕制形成，或者在线材绕制完成后，通过冲压将线材的横截面压至椭圆形或长方形等，使得弹性支片10的径向力明显增加，即使在振动单元20低频大位移的情况下，仍可保证良好的听音效果。
弹性支片10中，弹性部13的第四端132正对中心区域设置，缓冲块60自第四端132向第二端102延伸，使得缓冲块60具有足够的长度，从而使得弹性支片10上靠近其第二端102的区域支撑在缓冲块60上的长度延长，进而提高对弹性支片10的缓冲作用。
本实施例中，第一安装部11设置有第一缓冲部14，第一缓冲部14的至 少部分结构自第一端101朝第一方向弯折；且/或，第二安装部12设置有第二缓冲部15，第二缓冲部15与弹性部13位于同一水平面内，弹性部13所在平面的方向不同于第一方向，且第二缓冲部15自第二端102朝向或背向弹性部13弯折。
本实施例弹性部13所在的平面可以为水平面，也可以是与竖直方向不同的其他方向，本实施例弹性部13所在的平面为水平面为例进行说明，第二缓冲部15与弹性部15位于同一水平面，即，第二缓冲部15水平设置，且第二缓冲部15朝向或背向弹性部13弯折。
可以理解地，在弹性支片10与音圈21以及外壳或磁轭等支架30装配时，弹性支片10的第一缓冲部14可与音圈21焊盘40接触，涂覆锡膏，激光焊接融化锡膏将弹性支片10与音圈21焊盘40进行固定，实现弹性支片10与音圈21的装配。且/或，支架30设置有焊盘40，第二缓冲部15与焊盘40焊接，具体地，弹性支片10的第二缓冲部15可与支架30焊盘40接触，涂覆锡膏，激光焊接融化锡膏将弹性支片10与支架30焊盘40进行固定，实现弹性支片10与音圈21的装配。而本实施例弹性支片10中，第一缓冲部14的至少部分结构的弯折方向与振动单元20的振动方向一致，即，第一缓冲部14的至少部分结构沿竖直方向弯折，使得第一缓冲部14的至少部分结构不受振动单元20竖直振动的影响，因而该部分结构不会受到旋转力牵引，抗疲劳性好，不易出现弹性支片10与焊盘40的焊点断裂及脱落的情况，保证弹性支片10与音圈21或支架30之间的装配有效性，可靠性高。本实施例弹性支片10中，第一安装部11与第一缓冲部14之间平滑过渡连接，可较少应力集中情况，保证弹性支片10不会发生断裂情况。
弹性部13位于第一安装部11和第二安装部12之间的中间区域，且本实施例的第二缓冲部15是朝向或背向弹性部13弯折的，即，第二缓冲部15是朝向或背向弹性支片10的中间区域折弯的，优选地，第二缓冲部15是朝向弹性支片10的中间区域弯折的，不仅增加第二缓冲部15与支架30焊盘40的接触面积，而且可抑制弹性支片10在振动单元20振动时所受的旋转力，抗疲劳性好，不易出现弹性支片10与支架30焊盘40的焊点断裂及脱落的情况，保证弹性支片10与支架30之间的装配有效性，可靠性高。
如图10所示，在一实施例中，第二缓冲部15呈弧形段，第二缓冲部15 的一端与振动单元20连接，且第二缓冲部15的另一端与第二安装部12平滑过渡连接。该实施例以第二缓冲部15连接在支架30上为例进行说明，第二缓冲部15呈弧形段，弧形段的一端连接于支架30上，弧形段的另一端与第二安装部12平滑过渡连接，可较少应力集中情况，保证弹性支片10不会发生断裂情况。
进一步地，第二缓冲部15呈圆心角大于或等于90°的圆弧段；且/或，第二缓冲部15的长度大于或等于1.5mm。如图11所示，第二缓冲部15可呈3/4的圆弧状，可较大程度的减少弹性支片10受振动单元20竖直振动的影响。且第二缓冲部15的长度大于或等于1.5mm，使得第二缓冲部15具有足够的长度，以便与焊盘40进行焊接和固定。
如图8和图9所示，在另一实施例中，第二缓冲部15包括连接段152和弧形段151，连接段152与振动单元20连接，且连接段152通过弧形段151与第二安装部12平滑过渡连接。该实施例以第二缓冲部15连接在支架30上为例进行说明，第二缓冲部15的连接段152连接于支架30上，且连接段152通过弧形段151与第二安装部12平滑过渡连接，弧形段151在第二安装部12和连接段152之间起到缓冲作用，避免应力集中。
进一步地，弧形段151呈内凹面朝向弹性部13设置的圆弧段，连接段152为直线段且与第二安装部12的延长线之间的夹角为15°～160°，可适当抑制弹性支片10受旋转力牵引，进而可适当减少弹性支片10受振动单元20竖直振动的影响。并且，将弧形段151及连接段152分别设置为圆弧段和直线段，方便制作。
如图1至图3所示，本实施例的支架30上还设置有支撑块70，支撑块70设置于焊盘40与缓冲块60之间，且第二缓冲部15支撑于支撑块70。支撑块70的设置，可与缓冲块60共同对第二缓冲部15起到支撑作用，消除弹性支片10的共振摇摆。
进一步地，支撑块70形成有一侧开口另一侧封闭的缺口71，缺口71形成于支撑块70上背离支架30的一侧，且缺口71的开口背离支架30；第二缓冲部15穿过缺口71并支撑于缺口71的封闭侧。如图1至图3所示，所示，缺口71的开口朝上设置，即，缺口71的开口侧为上侧，封闭侧为下侧，第二缓冲部15可穿过该缺口71，缺口71对弹性支片10起到导向和支撑作用， 消除弹性支片10的共振摇摆。
本实施例的弹性部13为沿第二方向布置的平面结构，且弹性部13与第一安装部11和第二安装部12位于同一水平面内，第一方向与第二方向相互垂直。本实施例的第二方向为如图4、图6和图7所示的水平方向或左右方向，弹性部13呈水平布置的平面结构，且弹性部13与第一安装部11和第二安装部12位于同一水平面上，即，弹性部13与第一安装部11和第二安装部12均呈水平布置的平面结构，相较于现有片形弹波状的定心支片，本实施例提高了弹性支片10的整体平面度，进一步降低电子装置沿竖直方向的高度，实现产品薄型化的设计理念。
如图1和图11所示，本实施例电子装置中，弹性支片10的数量至少为两个，至少两个弹性支片10沿音圈21的外周间隔均匀设置。在一实施例中，弹性支片10的数量为三个，三个弹性支片10沿振动单元20的外周间隔均匀设置，增强了对振动单元20的定心效果，具体地，至少三个弹性支片10在振动单元20竖直振动时对音圈21形成水平方向上的至少三处约束，可遏制振动单元20发生偏振，且弹性支片10跟随振动单元20在竖直方向上位移，增强对振动单元20的定心效果。在其他实施例中，弹性支片10的数量也可以为四个、五个、六个或其他数量。本发明电子装置中弹性支片10的数量可根据实际情况灵活调整，本发明对弹性支片10的数量不作限制。
电子装置可包括至少一个弹性群50，一个弹性群50包括四个位于同一水平面的弹性支片10。同一个弹性群50中，四个弹性支片10的线宽或材质可以相同，也可以不同。比如，由于材质属性的不同，四个弹性支片10中，其中两个弹性支片10的材质为磷青铜，则其线宽可以设置为0.4mm，另一个弹性支片10的材质为铍铜，则其线宽可以设置为0.3mm，还有一个弹性支片10的材质为316钢，则其线宽可以设置为0.2mm。
另外，同一个弹性群50的四个弹性支片10中，其中两个弹性支片10为导电体结构，其余弹性支片10为非导电体结构。导电体结构的弹性支片10中，具备导电的功能，其能够向电子装置的振动单元20传输电信号，具体地，该弹性支片10通过其中第一安装部11与振动单元20中音圈21的接线部电连接配合，第二安装部12与外部电源连接，进而通过弹性支片10传输音圈21与外部的电信号；此外，该弹性支片10还通过其弹性部13的弹性形变作 用来根据振动单元20的振动偏移状态对振动单元20的往复振动进行约束，使所述振动单元20稳定在预设的中心区域，防止了振动单元20的偏振，使得振动单元20的往复振动更加稳定。因此，该弹性支片10兼具了导电及定心的作用，实现了这两种功能的集成，在电子装置中只需设置两个本发明的弹性支片10即可同时实现对内外部电路的导通作用及对振动单元20振动的定心作用，这样不仅能够节省电子装置腔体内的空间，进一步利于产品的薄型化，并且有效地简化了电子装置的装配工艺。
电子装置可包括多个弹性群50，比如两个或三个弹性群50，多个弹性群50沿音圈21的高度方向间隔布置，各弹性群50的所有弹性支片10位于同一水平面内。以两个弹性群50为例进行说明，两个弹性群50沿振动单元20的竖直方向间隔布置，各弹性群50组包括四个弹性支片10，并且该四个弹性支片10位于同一水平面内，两个弹性群50的八个弹性支片10在竖直方向呈错位排布，不仅增强对振动单元20的定心效果，而且力学劲度Kms对称性及平坦性好，满足大位移疲劳要求。多个弹性群50相较于一个弹性群50来说，一方面增强对振动单元20的定心效果，另一方面减少应力集中，可相应减小弹性支片10的线宽，更易制作。
本发明电子装置中，弹性群50的数量及排布方式，以及各弹性群50的形状、结构、线宽、材质及属性等可根据实际需要灵活设置，兼容性好，应用范围广。
本发明还提出一种终端，终端包括上述的电子装置。该终端可以是电脑、手机、音箱以及应用在汽车上的车载音箱等。该终端包括上述电子装置，电子装置及其弹性支片10的具体结构参照上述实施例，由于本终端采用了上述所有实施例的全部技术方案，因此至少具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。
以上仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (18)

  1. 一种电子装置，其特征在于，所述电子装置包括振动单元、支架和弹性支片，所述弹性支片的第一端与所述振动单元连接，所述弹性支片的第二端与所述支架连接，以用于平衡所述振动单元沿第一方向往复振动；
    所述支架上对应所述弹性支片的位置设置有缓冲块，所述弹性支片上靠近其第二端的区域安装在所述缓冲块上。
  2. 如权利要求1所述的电子装置，其特征在于，所述缓冲块形成有穿孔，所述弹性支片上靠近其第二端的区域穿过并安装于所述穿孔。
  3. 如权利要求2所述的电子装置，其特征在于，所述穿孔为一侧开口另一侧封闭的凹槽结构，所述凹槽结构形成于所述缓冲块上背离所述支架的一侧，且所述凹槽结构的开口背离所述支架。
  4. 如权利要求3所述的电子装置，其特征在于，所述弹性支片上靠近其第二端的区域通过柔性缓冲件安装于所述凹槽结构内。
  5. 如权利要求4所述的电子装置，其特征在于，所述柔性缓冲件为填充于所述凹槽结构内的粘胶。
  6. 如权利要求5所述的电子装置，其特征在于，所述弹性支片上靠近其第二端的区域与所述凹槽结构的内壁之间具有间隙，所述粘胶填充所述间隙。
  7. 如权利要求1-6中任一项所述的电子装置，其特征在于，所述弹性支片包括依次连接的第一安装部、弹性部和第二安装部，所述弹性部呈直线和/或曲线弯折结构，所述第一安装部远离所述弹性部的一端为所述第一端，所述第二安装部远离所述弹性部的一端为所述第二端；所述缓冲块朝向所述弹性部的投影区与所述弹性部至少部分重叠。
  8. 如权利要求7所述的电子装置，其特征在于，所述弹性部包括与所述第一安装部连接的第三端，以及与所述第二安装部连接的第四端，所述弹性部由所述第三端沿同一方向或不同方向呈直线和/或曲线延伸至所述第四端形成；
    所述第三端和所述第四端之间设有中心区域，所述第四端正对所述中心区域设置，所述缓冲块自所述第四端向所述第二端延伸。
  9. 如权利要求7所述的电子装置，其特征在于，所述第一安装部设置有第一缓冲部，所述第一缓冲部的至少部分结构自所述第一端朝所述第一方向弯折；且/或，
    所述第二安装部设置有第二缓冲部，所述第二缓冲部与所述弹性部位于同一水平面内，所述弹性部所在平面的方向不同于所述第一方向，且所述第二缓冲部自所述第二端朝向或背向所述弹性部弯折。
  10. 如权利要求9所述的电子装置，其特征在于，所述第二缓冲部呈弧形段，所述第二缓冲部的一端与所述振动单元连接，且所述第二缓冲部的另一端与所述第二安装部平滑过渡连接；或者，
    所述第二缓冲部包括连接段和弧形段，所述连接段与所述振动单元连接，且所述连接段通过所述弧形段与所述第二安装部平滑过渡连接。
  11. 如权利要求9所述的电子装置，其特征在于，所述支架设置有焊盘，所述第二缓冲部与所述焊盘焊接。
  12. 如权利要求11所述的电子装置，其特征在于，所述支架上还设置有支撑块，所述支撑块设置于所述焊盘与所述缓冲块之间，且所述第二缓冲部支撑于所述支撑块。
  13. 如权利要求12所述的电子装置，其特征在于，所述支撑块形成有一侧开口另一侧封闭的缺口，所述缺口形成于所述支撑块上背离所述支架的一侧，且所述缺口的开口背离所述支架；所述第二缓冲部穿过所述缺口并支撑 于所述缺口的封闭侧。
  14. 如权利要求9所述的电子装置，其特征在于，所述弹性部为沿第二方向布置的平面结构，且所述弹性部与所述第一安装部及所述第二安装部位于同一水平面内，所述第一方向与所述第二方向相互垂直。
  15. 如权利要求1-6中任一项所述的电子装置，其特征在于，所述弹性支片由线状结构绕制而成；又或者，所述弹性支片由片状结构冲压成型。
  16. 如权利要求1-6中任一项所述的电子装置，其特征在于，所述弹性支片的线段横截面呈曲线和/或直线形成的闭合环状结构。
  17. 如权利要求1-6中任一项所述的电子装置，其特征在于，所述振动单元包括振膜和与所述振膜连接的音圈；所述第一端与所述音圈连接；
    且/或，所述支架为外壳或者磁轭。
  18. 一种终端，其特征在于，所述终端包括如权利要求1-17中任一项所述的电子装置。
PCT/CN2021/114312 2021-01-29 2021-08-24 电子装置及终端 WO2022160685A1 (zh)

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