Auxiliary stand and vibration sound production device assembly

Abstract

The application discloses an auxiliary support and a vibration sound production device assembly, wherein the auxiliary support is internally provided with a centering cavity, the centering cavity is provided with a first positioning position and a second positioning position which are spaced apart on the axis of the centering cavity, the first positioning position is used for positioning a magnetic circuit assembly of the vibration sound production device, the second positioning position is used for positioning a coil assembly of the vibration sound production device, and the outer periphery of the magnetic circuit assembly and the outer periphery of the coil assembly are in abutment with the cavity wall of the centering cavity. The technical scheme of the application can improve the assembly efficiency of the vibration sound production device product.

Description

Technical Field

[0001] This invention relates to the field of electroacoustic equipment technology, and in particular to an auxiliary support and a vibration sound-generating device assembly. Background Technology

[0002] Currently, full-screen technology has been successfully applied in electronic devices and has become a popular trend. Screen sound technology is key to realizing full-screen technology. Screen sound generation can be achieved through direct-drive methods. Direct-drive screen sound generators use a split structure, with the magnetic circuit assembly and coil assembly separate. The screen is used as an elastic component, and electromagnetic principles are used to drive the screen to produce sound. For this direct-drive structure, it is crucial to ensure the alignment of the magnetic circuit assembly and the coil assembly; otherwise, product performance will be severely affected. However, currently, the magnetic circuit assembly and coil assembly are usually stored and transported as separate parts. Alignment between the magnetic circuit assembly and the coil assembly is then performed during product assembly. To ensure good alignment, this real-time alignment process is relatively slow, resulting in low product assembly efficiency. Summary of the Invention

[0003] The main objective of this invention is to provide an auxiliary support that improves the assembly efficiency of vibration sound-generating devices.

[0004] To achieve the above objectives, the auxiliary support proposed in this invention is provided with a centering cavity. The centering cavity has a first positioning position and a second positioning position spaced apart on its axis. The first positioning position is used for positioning the magnetic circuit assembly of the vibration sound-generating device, and the second positioning position is used for positioning the coil assembly of the vibration sound-generating device. The outer periphery of the magnetic circuit assembly and the outer periphery of the coil assembly both abut against the cavity wall of the centering cavity.

[0005] Optionally, the auxiliary support is arranged in the form of a cylinder with one end open, and the centering cavity is the inner cavity of the auxiliary support.

[0006] Optionally, the first positioning position is located at the open end of the auxiliary support, and the second positioning position is located at the closed end of the auxiliary support.

[0007] Optionally, the side wall of the auxiliary bracket is provided with a mounting notch that extends through its open end face, the mounting notch being used to allow the lead wire and / or extension fixing part of the coil assembly to move in and out.

[0008] Optionally, a chamfer is provided between the inner wall surface of the auxiliary bracket and the open end face of the auxiliary bracket, and / or between the wall surface of the mounting notch and the open end face of the auxiliary bracket.

[0009] Optionally, the auxiliary support is further provided with a limiting part, the limiting part having a limiting surface facing the opening end of the auxiliary support, the limiting surface being used for the magnet of the magnetic circuit assembly to be held and limited.

[0010] Optionally, the limiting part is a support boss protruding from the closed end of the auxiliary bracket toward the open end, and the lower shell of the coil assembly is provided with an avoidance notch corresponding to the support boss.

[0011] Optionally, a magnetic attracting element is embedded in the limiting part, which is used to magnetically attract the magnet of the magnetic circuit assembly.

[0012] Optionally, the magnetic attractor is a magnetic metal component.

[0013] The present invention also proposes a vibration sound-generating device assembly, including a magnetic circuit assembly, a coil assembly, and the aforementioned auxiliary support. The outer periphery of the magnetic circuit assembly and the outer periphery of the coil assembly abut against the cavity wall of the centering cavity of the auxiliary support. The magnetic circuit assembly is positioned at a first positioning position of the centering cavity, and the coil assembly is positioned at a second positioning position of the centering cavity.

[0014] In the technical solution of this invention, before assembling the vibration sound-generating device, the magnetic circuit assembly and the coil assembly can be connected into a single component using an auxiliary bracket. Since the outer peripheries of both the magnetic circuit assembly and the coil assembly abut against the cavity wall of the centering cavity, the centering cavity of the auxiliary bracket simultaneously defines the installation positions of the magnetic circuit assembly and the coil assembly, determining their relative positions. This prevents the magnetic circuit assembly and the coil assembly from slipping in directions other than the axial direction of the centering cavity. Therefore, during storage and transportation, misalignment caused by slippage in non-relative motion directions is avoided, allowing the magnetic circuit assembly and coil assembly to be assembled in a aligned state without immediate alignment, thus improving the assembly efficiency of the vibration sound-generating device. Of course, after assembling the magnetic circuit assembly and coil assembly onto the vibration sound-generating device, the auxiliary bracket is usually removed. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the vibration sound-generating device of the present invention;

[0017] Figure 2 for Figure 1 A schematic diagram of the explosive structure of a vibration-generating sound device.

[0018] Explanation of icon numbers:

[0019] label name label name 10 Magnetic circuit components 11 Magnet assembly 111 permanent magnet 12 upper shell 20 Coil assembly 21 coil 22 Lower shell 23 lead 221 Avoiding gaps 222 Extension fixing part 30 Assistive support 31 Limiting part 32 Magnetic components 301 For the middle cavity 302 Installation gap 303 chamfer

[0020] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0024] This invention proposes an auxiliary support.

[0025] Reference Figure 1 and Figure 2 In one embodiment of the present invention, the auxiliary bracket is used to assist the vibration sound-generating device product.

[0026] The vibration-generating sound device typically includes a vibrating element, a fixing element, a magnetic circuit assembly 10, and a coil assembly 20. One of the magnetic circuit assembly 10 and the coil assembly 20 is fixedly connected to the vibrating element, and the other is fixedly connected to the fixing element. In this embodiment, the vibrating element can be the screen of the electronic device to which the vibration-generating sound device is applied, or a back cover opposite the screen. The following explanation uses the screen as the vibrating element. The fixing element can be a fixed component in the electronic device to which the vibration-generating sound device is applied, such as the frame, circuit board, or sidewall of the electronic device, or it can be a separately configured fixed part. It is understood that the coil assembly 20 continuously generates heat during power-on. If the coil assembly 20 is fixedly connected to the screen, the heat can easily damage the screen. In this embodiment, the magnetic circuit assembly 10 is connected to the screen, and the coil assembly 20 is fixedly connected to the fixing element rather than to the screen, effectively preventing the heat generated by the coil assembly 20 from damaging the screen.

[0027] In this embodiment, the auxiliary support 30 is provided with a centering cavity 301. The centering cavity 301 has a first positioning position and a second positioning position that are spaced apart on its axis. The first positioning position is used for positioning the magnetic circuit assembly 10, and the second positioning position is used for positioning the coil assembly 20. The outer periphery of the magnetic circuit assembly 10 and the outer periphery of the coil assembly 20 are both in contact with the cavity wall of the centering cavity 301.

[0028] In the technical solution of the present invention, before the vibration sound-generating device is assembled, the magnetic circuit assembly 10 and the coil assembly 20 can be connected into one assembly by an auxiliary bracket 30. Since the outer periphery of both the magnetic circuit assembly 10 and the outer periphery of the coil assembly 20 abut against the cavity wall of the centering cavity 301, the centering cavity 301 of the auxiliary bracket 30 can simultaneously define the installation position of the magnetic circuit assembly 10 and the coil assembly 20 and determine their relative position. This prevents the magnetic circuit assembly 10 and the coil assembly 20 from sliding in any direction other than the axial direction of the centering cavity 301. Thus, during the storage and transportation of the magnetic circuit assembly 10 and the coil assembly 20, misalignment caused by positional slippage in non-relative motion directions is avoided. Consequently, the magnetic circuit assembly 10 and the coil assembly 20 can be assembled in an aligned state without the need for immediate alignment, thereby improving the assembly efficiency of the vibration sound-generating device. Of course, after the magnetic circuit assembly 10 and the coil assembly 20 are assembled on the vibration sound-generating device, the auxiliary support 30 is usually removed.

[0029] Furthermore, the auxiliary support 30 is arranged in a cylindrical shape with one end open, and the centering cavity 301 is the inner cavity of the auxiliary support 30. However, this design is not limited to this. In other embodiments, the auxiliary support 30 may also be arranged in a cylindrical shape with both ends open. Of course, when the auxiliary support 30 is only open at one end, it is only necessary to fix one of the magnetic circuit assembly 10 and the coil assembly 20 that is closer to the open end of the auxiliary support 30 to the auxiliary support 30 to prevent the other from detaching from the open end of the auxiliary support 30, which makes the structure simpler; in addition, the auxiliary support 30 can also provide protection for the magnetic circuit assembly 10 and the coil assembly 20.

[0030] Furthermore, the first positioning position is located at the open end of the auxiliary support 30, and the second positioning position is located at the closed end of the auxiliary support 30. That is, the magnetic circuit assembly 10 is positioned at the open end of the auxiliary support 30, and the coil assembly 20 is positioned at the closed end of the auxiliary support 30. It can be understood that, generally, the outer periphery of the magnet assembly 10 is thicker than the outer periphery of the coil assembly 20, so it is easier to insert the coil assembly 20, which has a thinner outer periphery, into the closed end of the auxiliary support 30. Of course, in other embodiments, the first positioning position and the second positioning position can also be interchanged.

[0031] Furthermore, the side wall of the auxiliary support 30 is provided with a mounting notch 302 penetrating its open end face. Typically, the coil assembly 20 includes a lower shell 22 and a coil 21 fixed to the lower shell 22; it is understood that the lower shell 22 provides a mounting attachment for the coil 21; optionally, the lower shell 22 is plate-shaped, a simple plate structure that is easy to manufacture. The periphery of the lower shell 22 abuts against the inner cavity of the auxiliary support 30. Typically, the lower shell 22 also has an extended fixing part 222 fixedly connected to a fixing member, and both the extended fixing part 222 and the lead wire 23 of the coil 21 move in and out through the mounting notch 302. In this embodiment, optionally, the lead wire 23 of the coil 21 is a flexible circuit board, on which the required circuitry can be easily printed, and multiple lines can be integrated together for easy assembly; of course, ordinary wires can also be used. Optionally, but not limited to, fixing holes may be provided on the extension fixing part 222 for fasteners such as screws and rivets to pass through; of course, other connecting structures such as buckles may also be provided on the extension fixing part 222.

[0032] Furthermore, a chamfer 303 is provided between the inner wall surface of the auxiliary support 30 and the open end face of the auxiliary support 30, so that the magnetic circuit assembly 10 and the coil assembly 20 can easily enter the centering cavity 301 from the open end of the auxiliary support 30.

[0033] Similarly, a chamfer 303 is provided between the wall surface of the mounting notch 302 and the end face of the opening of the auxiliary bracket 30, so that the extension fixing part 222 and the lead wire 23 can be easily inserted into the mounting notch 302.

[0034] Furthermore, the auxiliary support 30 is also provided with a limiting part 31, which has a limiting surface facing the opening end of the auxiliary support 30. The limiting surface is used to hold and limit the magnet of the magnetic circuit assembly 10, so as to limit the distance between the magnet assembly 10 and the lower shell 22.

[0035] Furthermore, the limiting part 31 is a support boss protruding from the closed end of the auxiliary bracket 30 toward the open end. However, this design is not limited to this. In other embodiments, the limiting part 31 can also be configured as a support plate protruding on the side wall of the auxiliary bracket 30, and there is a gap between the support plate and the closed end of the auxiliary bracket 30. It can be understood that in the scheme of setting the limiting part 31 as the support boss, it is convenient to injection mold the auxiliary bracket 30. The support boss can be formed by directly opening the mold, and in particular, the support boss can be formed without core pulling. Optionally, the support boss is also connected to the side wall of the auxiliary bracket 30. That is, the support boss is set at the connection between the side wall of the auxiliary bracket 30 and the closed end wall of the auxiliary bracket 30. In this way, the auxiliary bracket 30 has better structural strength and is less prone to deformation, thereby avoiding deformation of the centering cavity 301, and thus ensuring good alignment between the magnetic circuit assembly 10 and the coil assembly 20.

[0036] Additionally, it should be noted that the lower shell 22 has a clearance notch 221 corresponding to the supporting boss. In one embodiment, optionally, the cross-section of the inner cavity of the auxiliary bracket 30 (the centering cavity 301) is approximately rectangular, and the two supporting bosses are respectively formed on the two opposite long sides of the inner cavity of the auxiliary bracket 30. Correspondingly, the two opposite long sides of the plate-shaped lower shell 22 are each provided with a clearance notch 221, and the two short sides and the wide ends of the two long sides of the lower shell 22 (where the clearance notch 221 is located is narrower) abut against the cavity wall of the inner cavity of the auxiliary bracket 30. Optionally, there is a gap between the clearance notch 221 and the supporting boss; in this way, the contact points between the lower shell 22 and the auxiliary bracket 30 during assembly can be reduced, thereby reducing the positions where friction may occur, and making it easier for the lower shell 22 to enter and exit the centering cavity 301; however, this design is not limited to this, and in other embodiments, the clearance notch 221 may also abut against the supporting boss.

[0037] Furthermore, a magnetic attractor 32 is embedded in the limiting part 31. This magnetic attractor 32 is used to magnetically attract the magnet of the magnetic circuit assembly 10. In this way, the magnetic circuit assembly 10 can be prevented from detaching from the auxiliary support 30 during storage and transportation. After the assembly of the magnetic circuit assembly 10 with the vibrating element and the coil assembly 20 with the fixing element is completed, the auxiliary support 30 can be separated from the magnetic circuit assembly 10 and the coil assembly 20, thereby removing the auxiliary support 30. In this embodiment, the magnetic attractor 32 can optionally be a magnetic metal part to reduce costs; of course, in other embodiments, the magnetic attractor 32 can also be a magnet that is itself magnetic.

[0038] In this embodiment, optionally, the magnetic circuit assembly 10 includes two magnet groups 11, which are arranged opposite to each other and spaced apart to form a magnetic gap between them. Correspondingly, the auxiliary support 30 is provided with two limiting parts 31 that are arranged opposite to each other and spaced apart. One magnet group 11 abuts against the limiting surface of one limiting part 31, and the other magnet group 11 abuts against the limiting surface of the other limiting part 31. In this embodiment, the coil 21 is movably disposed in the magnetic gap, and one annular end face of the coil 21 faces one magnet group 11, and the other annular end face faces the other magnet group 11.

[0039] Optionally, the magnetic circuit assembly 10 also includes an upper shell 12 fixedly connected to the vibrating element, with the two magnet assemblies 11 mounted on the upper shell 12. It is understood that the addition of the upper shell 12 allows the magnetic circuit assembly 10 to be assembled into a single module before being mounted onto the auxiliary support 30, improving assembly efficiency. Furthermore, when the upper shell 12 is made of a magnetically conductive material, it can also serve as a magnetic conductor, improving the performance of the magnetic circuit assembly 10.

[0040] Optionally, the upper shell 12 is a cylindrical shape with one open end. The closed end of the upper shell 12 is fixedly connected to the vibrating element, and the two magnet assemblies 11 are disposed inside the upper shell 12. In this way, the side wall of the upper shell 12 can provide positioning and installation for the magnet assemblies 11, making the relative position of the two magnet assemblies 11 more stable. In addition, the side wall of the upper shell 12 can also provide protection for the magnet assemblies 11. In this embodiment, the open end of the upper shell 12 is inserted into the inner cavity of the auxiliary support 30, and the outer peripheral surface of the upper shell 12 abuts against the inner peripheral surface of the auxiliary support 30. In this way, the abutment between the outer periphery of the magnetic circuit assembly 10 and the cavity wall of the centering cavity 301 can be a surface abutment, so as to eliminate the possibility of the magnetic circuit assembly 10 being misaligned, thereby improving the centering effect between the magnetic circuit assembly 10 and the coil assembly 20. However, this design is not limited to this. In other embodiments, the upper shell 12 can also be plate-shaped.

[0041] In this embodiment, optionally, the magnet group 11 is a Heilbeck magnet. Further optionally, the magnet group 11 includes three permanent magnets 111 stacked in phase. The magnetization direction of the permanent magnets 111 at both ends is perpendicular to the extension direction (i.e., the vibration direction) of the centering cavity 301, and their magnetization directions are opposite. The magnetization direction of the permanent magnet 111 in the middle is parallel to the extension direction of the centering cavity 301. Thus, the magnetic field strength within the magnetic gap is relatively large, the vibration driving force is relatively large, and the oscillation start-up speed is fast. Of course, the permanent magnets 111 in the magnet group 11 are not limited to three, but can include more. The magnetization direction of the permanent magnets 111 at both ends of each magnet group 11 is perpendicular to the extension direction of the centering cavity 301, and their magnetization directions are opposite. The magnetization direction of the permanent magnet 111 in the middle is parallel to the extension direction of the centering cavity 301, and the magnetic fields of each permanent magnet 111 are paramagnetically connected.

[0042] This invention also proposes a vibration-generating sound device assembly, which includes a magnetic circuit assembly, a coil assembly, and an auxiliary support. The specific structure of the auxiliary support is as described in the above embodiments. Since this vibration-generating sound device assembly adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here. The outer periphery of both the magnetic circuit assembly and the outer periphery of the coil assembly abut against the cavity wall of the centering cavity of the auxiliary support. The magnetic circuit assembly is positioned at a first positioning position in the centering cavity, and the coil assembly is positioned at a second positioning position in the centering cavity.

[0043] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An auxiliary support, characterized in that, The auxiliary support is provided with a centering cavity. The centering cavity has a first positioning position and a second positioning position that are spaced apart on its axis. The first positioning position is used to position the magnetic circuit assembly of the vibration sound generating device, and the second positioning position is used to position the coil assembly of the vibration sound generating device. The outer periphery of the magnetic circuit assembly and the outer periphery of the coil assembly are both in contact with the cavity wall of the centering cavity, so that the magnetic circuit assembly and the coil assembly are kept in a centering state relative to each other in the axial direction of the centering cavity. The vibration sound-generating device further includes a vibrating element and a fixing element. The auxiliary bracket is used to install the magnetic circuit assembly and the coil assembly between the vibrating element and the fixing element in the centering state, so that one of the magnetic circuit assembly and the coil assembly is fixedly connected to the vibrating element and the other is fixedly connected to the fixing element. After the assembly of the magnetic circuit assembly and the coil assembly between the vibrating element and the fixing element is completed, the auxiliary bracket is removed. The auxiliary support is a cylindrical structure with one open end, and the centering cavity is the inner cavity of the auxiliary support; the first positioning position is located at the open end of the auxiliary support, and the second positioning position is located at the closed end of the auxiliary support. The side wall of the auxiliary bracket is provided with a mounting notch that penetrates its open end face, the mounting notch being used to allow the lead wire and / or extension fixing part of the coil assembly to move in and out. A limiting part is provided inside the auxiliary support, and the limiting part has a limiting surface facing the opening end of the auxiliary support. The limiting surface is used for the magnet of the magnetic circuit assembly to be held and limited.

2. The auxiliary support as described in claim 1, characterized in that, A chamfer is provided between the inner wall surface of the auxiliary bracket and the open end face of the auxiliary bracket, and / or between the wall surface of the mounting notch and the open end face of the auxiliary bracket.

3. The auxiliary support as described in claim 1, characterized in that, The limiting part is a support boss that protrudes from the closed end of the auxiliary bracket toward the open end, and the lower shell of the coil assembly has an avoidance notch corresponding to the support boss.

4. The auxiliary support as described in claim 3, characterized in that, A magnetic attractor is embedded in the limiting part, and the magnetic attractor is used to magnetically attract the magnet of the magnetic circuit assembly.

5. The auxiliary support as described in claim 4, characterized in that, The magnetic component is a magnetic metal component.

6. A vibration-generating sound device assembly, characterized in that, The device includes a magnetic circuit assembly, a coil assembly, and an auxiliary support as described in any one of claims 1 to 5, wherein the outer periphery of the magnetic circuit assembly and the outer periphery of the coil assembly abut against the cavity wall of the centering cavity of the auxiliary support, and the magnetic circuit assembly is positioned at a first positioning position of the centering cavity, and the coil assembly is positioned at a second positioning position of the centering cavity.

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