Device for transmitting sound through bone conduction and portable device

Abstract

Device for transmitting sound through bone conduction, characterized in that the device comprises the following: a housing (1) which is provided with a receiving chamber (10), a vibration component (2) which is provided in the receiving chamber (10); a coil (3) which is relatively rigidly connected to the housing (1) and surrounds the outer circumference of the vibration component (2), wherein a flexible printed circuit board (5) connected to the coil (3) is provided outside the housing (1), the flexible printed circuit board (5) being provided at one end along the longitudinal direction of the housing (1) for connection to a control circuit; and two elastic elements (4) which are connected to both ends of the vibration component (2) and each is connected to the housing (1).

Description

INFORMATION ABOUT PRIORITY:

[0001] This utility model claims priority from Chinese patent application No. 202210557598.9, filed on Thursday, May 19, 2022. TECHNICAL FIELD

[0002] The present utility model relates to the field of bone conduction technology and, in particular, to a device for vibrating sound by bone conduction and a wearable device. STATE OF THE ART

[0003] Bone conduction sound transmission is a transmission method that enables hearing through bones. Wearable devices such as bone conduction headphones and bone conduction glasses generate vibrations using a bone conduction sound oscillation device, allowing people to hear sounds.

[0004] The bone conduction sound vibration device often comprises a housing, a vibrating component provided within the housing, a spring piece connected between the housing and the vibrating component, and a coil that excites the vibrating component to vibrate, wherein the vibrating component is magnetic, vibrates under the action of the magnetic field of the excited coil, and can be reset under the action of the spring piece.

[0005] The vibration component has only a spring piece connected to the housing at one end, and the other end is suspended. During the vibration process, the vibration component may generate rolling vibration, swinging left and right. This situation is particularly pronounced when the vibration component is in the shape of a long and narrow strip. Due to the occurrence of rolling vibration, the vibration component is likely to impact external parts during the vibration process, causing noise, which not only affects the sound quality but also easily leads to damage to the parts.

[0006] In addition, the mounting space of the bone conduction sound vibration device is small, and the existing spring pieces often include a ring-shaped outer bracket, a plate body provided in the center of the outer bracket, and multiple spring arms connected between the plate body and the outer bracket. The plate body is connected to the vibration component, and the elastic force of the elastic arm drives the vibration component to reset. Since the bone conduction sound vibration device is small, the elastic arms of the existing structural spring pieces are short in length and narrow in width, which is not conducive to improving the acoustic quality and reliability of the bone conduction sound vibration device.

[0007] Therefore, it is necessary to improve the existing technology to eliminate the shortcomings of the existing technology. DISCLOSURE OF THE INVENTION

[0008] The object of the present utility model is to provide a bone conduction sound vibration device and a wearable device that can reduce rolling vibration during the vibration process of the vibration component.

[0009] In order to achieve the above-mentioned purpose of the utility model, the present utility model proposes in the first aspect a device for vibrating sound by bone conduction, comprising: a housing provided with a receiving space, wherein a flexible circuit board connected to the coil is provided outside the housing, wherein the flexible circuit board is provided at one end of the housing in the longitudinal direction and serves to connect to the external control circuit; a vibration component provided in the receiving space; a coil relatively firmly connected to the housing and surrounding the outer periphery of the vibration component; and two elastic elements connected to both ends of the vibration component and each connected to the housing.

[0010] In a second aspect, the present utility model proposes a portable device comprising the device for oscillating sound by bone conduction described above.

[0011] Compared with the prior art, the present utility model has the following advantageous effects: According to some embodiments of the present utility model, an elastic member is provided at each end of the vibration component to support and restrict it, which can effectively improve the linearity of its vibration and prevent the occurrence of rolling vibration. Furthermore, according to some embodiments of the present utility model, the elastic member includes an outer bracket and a connecting arm extending along the longitudinal direction of the outer bracket, thereby fully utilizing the limited space and increasing the length and width of the connection. On the one hand, the connecting arm can provide a more reliable restoring force, and on the other hand, the connection between the connecting arm and the vibration component can be made stronger, thereby further reducing rolling vibration. PRESENTATION OF THE INVENTION Fig. 1 is a schematic structural diagram of a bone conduction sound vibration device according to an embodiment of the present utility model. Fig. 2 is a plan view of the Fig. 1 shows a device for vibrating sound by bone conduction. Fig. 3 is a sectional view along the section line CC in Fig. 2. Fig. 4 is a schematic structural diagram of an elastic member according to an embodiment of the present utility model, wherein the outer support is annular. Fig. 5 is a front view of the Fig. 4 shown elastic element. Fig. 6 is a sectional view of a bone conduction sound vibration device according to an embodiment of the present utility model, wherein the thickness of the connecting portion is larger than the thickness of the elastic portion in the figure. Fig. 7 is a sectional view of a bone conduction sound vibration device according to an embodiment of the present utility model, in which the connecting portion protrudes in the direction of the vibration component. Fig. 8 is a sectional view of a bone conduction sound vibration device according to an embodiment of the present invention, in which a partition plate is connected between the connecting portion and the vibration component. Fig. 9 is a schematic structural diagram of an elastic member according to an embodiment of the present utility model. Fig. 10 is a schematic structural diagram of the housing of the Fig. 1 shown device for oscillating sound by bone conduction. Fig. 11 is a three-dimensional sectional view of the housing of the Fig. 1 shown device for oscillating sound by bone conduction. Fig. 12 is a front view of the housing of the Fig. 1 shown device for oscillating sound by bone conduction. Fig. 13 is a schematic diagram of the coil in the present utility model mounted in the mounting hole of the housing. Fig. 14 is a schematic structural diagram of a housing according to an embodiment of the present utility model, wherein in the figure, the housing includes an upper shell and a lower shell. Fig. 15 is a schematic diagram showing the position of the vibration component and the coil in an embodiment of the present utility model, in which the vibration component is formed by a connection of a plurality of connected parts. Fig. 16 is a schematic diagram showing the position of the vibration component and the coil in an embodiment of the present invention, wherein the vibration component is a single part in the figure. Fig. 17 is a schematic diagram showing the position of the vibration component and the coil according to an embodiment of the present invention, wherein the number of coils is two. CONCRETE EMBODIMENTS

[0012] In order to make the above purpose, features, and advantages of the present utility model more obvious and easier to understand, the specific embodiments of the present utility model are described below in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes of the present utility model, but not for limiting the present utility model. In addition, it should be noted that, for the convenience of description, some structures related to the present utility model are only shown in the drawings, but not all of the structures. Any other embodiments that a person of ordinary skill in the art can derive from the embodiments in the present utility model without creative effort are included within the scope of the present utility model.

[0013] The terms "including" and "comprising" in this utility model, and all variations thereof, are intended to cover non-exclusive inclusion. A process, method, system, product, or device, for example, that includes a series of steps or units, is not limited to the listed steps or units, but may alternatively include steps or units not listed, or alternatively include other steps or elements inherent in the process, method, product, or device.

[0014] Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present invention. The occurrence of this phrase at various points in the specification does not necessarily all refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive from other embodiments. Those skilled in the art will expressly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0015] As in Fig. 1 to 15, a device for vibrating sound by bone conduction, which corresponds to a preferred embodiment of the present utility model, comprises a housing 1, a vibration component 2, a coil 3 and an elastic element 4.

[0016] The bone conduction sound vibration device is strip-shaped as a whole, and accordingly, its vibration component 2, the coil 3 and the elastic element 4 are also strip-shaped, and the length directions of the bone conduction sound vibration device, the housing 1, the vibration component 2, the coil 3 and the elastic elements 4 are consistent, and the arrow B in Fig. 2 indicates the length direction. It is clear that a strip-shaped bone conduction sound oscillation device is better suited for installation in a strip-shaped room. For example, for bone conduction glasses, a strip-shaped bone conduction sound oscillation device is better suited for installation in strip-shaped temples and has little impact on the shape of the temples.

[0017] The housing 1 serves as a mounting support for the vibration component 2, the coil 3, and the elastic element 4 and is provided with a receiving space 10. The housing 1 can be made of plastic, aluminum, or stainless steel, for example.

[0018] The vibration component 2 is located in the receiving space 10. When the bone conduction sound vibration device is in operation, the vibration component 2 can vibrate along the vibration axis A. As a preferred embodiment, both ends of the housing 1 are provided with openings along the direction of the vibration axis A, wherein the area of ​​the openings is larger than the cross-sectional area of ​​the vibration component 2, wherein the vibration component 2 can be installed into the receiving space 10 through the opening, which facilitates assembly.

[0019] The coil 3 is relatively firmly connected to the housing 1 and surrounds the outer circumference of the vibrating component 2, which can be supplied with energy to generate a changing magnetic field, causing the vibrating component 2 to oscillate under the interaction with the magnetic field, i.e., the coil 3 serves to drive the vibrating component 2 to oscillate. As shown in Fig. 1, a flexible circuit board 5 is provided outside the housing 1 and is connected to the coil 3 via a wire, the flexible circuit board 5 being connected to an external control circuit, and the coil 3 drives the vibration component 2 to vibrate under the control of the external control circuit.

[0020] As in the Fig. 1, Fig. 3 and Fig. 4, the number of elastic elements 4 is two, and the two elastic elements 4 are respectively connected to both ends of the vibration component 2. In some embodiments, the two ends of the vibration component 2 along the vibration direction (i.e., the direction of the vibration axis) are flat first end surfaces 24, wherein the two connecting arms 41 are respectively connected to the two first end surfaces 24, for example, by welding or gluing. The elastic element 4 is generally plate-shaped and includes an outer bracket 40 and a connecting arm 41, wherein the outer bracket 40 is connected to the housing 1, one end of the connecting arm 41 is connected to the outer bracket 40, and the other end extends along the longitudinal direction of the elastic element 4 and is connected to the vibration component 2.During the vibration process, the connecting arm 41 provides an elastic force to drive the vibrating component 2 to reset. The elastic element 4 can be made of, for example, stainless steel, plastic, beryllium copper, or the like.

[0021] Since both ends of the vibration component 2 can be supported and restrained by the elastic member 4, the vibration component 2 can perform linear vibration more reliably and is less susceptible to rolling vibration compared to the situation where one end is suspended in the air. At the same time, since the connecting arm 41 extends along the longitudinal direction of the elastic member 4, its length can be made longer, and the amount of elastic deformation is correspondingly larger, which has a positive effect on increasing the amplitude and improving the low-frequency effect. In addition, the width of the connecting arm 41 can also be made larger, so that the connection area with the vibration component 2 is larger and the connection is stronger.

[0022] As in Fig. As shown in Figure 4, the connecting arm 41 is generally plate-shaped and includes a base 411 connected to the outer bracket 40, a connecting portion 410 connected to the first end surface 24 of the vibrating component 2, and an elastic portion 412 connected between the base 411 and the portion 410. During the vibration operation of the vibrating component 2, the base 411 is fixed, the connecting portion 410 vibrates together with the vibrating component 2, and the elastic portion 412 elastically deforms along with the displacement of the vibrating component 2, thereby providing an elastic force to drive the vibrating component 2 to reset.The connecting arm 41 extends from the base 411 along the longitudinal direction of the elastic member 4, thereby allowing a longer length of the elastic portion 412 to be obtained, and the length of the connecting portion 410 can also be adjusted accordingly. Furthermore, since the space between the outer brackets 40 can be fully utilized, the width of the elastic portion 412 and the connecting portion 410 can be made larger, thereby increasing the rigidity and strength of the elastic portion 412 and improving the connection strength between the connecting portion 410 and the vibration component 2, thus improving the operational reliability of the bone conduction sound vibration device.

[0023] In addition to controlling the width of the elastic portion 412, the strength and rigidity of the elastic portion 412 can also be adjusted by providing hollow holes 414 on the elastic portion 412, wherein the number of hollow holes 414 can be one or more, and by controlling the area size of the hollow hole 414, the strength and rigidity of the elastic portion 412 can be changed.

[0024] In some embodiments, the vibration component 2 is described with reference to Fig. 3 is a symmetrical body having a plane of symmetry 2a perpendicular to its longitudinal direction (the plane of symmetry 2a in the figure coincides with the vibration axis A), wherein the connecting portion 410 and the base 411 of the elastic element 4 are respectively located on both sides of the plane of symmetry 2a, so that the length of the connecting arm 41 is longer. It should be understood that if the base 411 is connected to the end of the outer bracket 40 in the longitudinal direction, a longer connecting arm 41 can be obtained, although of course, the specific length of the connecting arm 41 can be adjusted according to actual needs.

[0025] The connecting portion 410 and the base 411 are respectively located on both sides of the symmetry plane 2a. Therefore, in order to make the force on the vibration component 2 more symmetrical and balanced, the connecting arm 41 of the two elastic members 4 is set to be centrally symmetrical, which is centrally symmetrical to the center of gravity of the vibration component 2 (the center of gravity of the vibration component 2 and its geometric center coincide), whereby the distance between each of the two connecting portions 410 and the center of gravity of the vibration component 2 is equal, and the force exerted by the elastic member 4 on the upper and lower end surfaces of the vibration component 2 is more balanced and symmetrical, and wherein the projection of the connecting arm 41 along the vibration axis A is basically within the first end surface 24 of the vibration component 2, whereby the occurrence of rolling vibrations can be further avoided.It is further preferably provided that the two elastic elements 4 are arranged centrally symmetrically.

[0026] It will be appreciated that a longer connecting arm 41 can often be achieved if the connecting portion 410 is located closer to the end of the vibrating component 2 along its longitudinal direction.

[0027] The vibration component 2 requires a certain vibration space during the vibration process and avoids interference with the base 411 and the elastic portion 412 of the connecting arm 41. In the first preferred embodiment and with reference to Fig. 3 to 5, the elastic portion 412 is inclined toward the side on which the vibration component 2 is located. In this way, the connecting portion 410 and the elastic portion 412 protrude from the outer bracket 40 into the receiving space 10, thereby forming a space between the connecting portion 410 and the outer bracket 40 in which the vibration component 2 can vibrate. In the second preferred embodiment and with reference to Fig. 6, the connecting arm 41 is flat, and the connecting arm 410 and the elastic portion 412 lie on the same plane, with the thickness of the connecting portion 410 being greater than the thickness of the elastic portion 412 and being convex with respect to the elastic portion 412 toward the side where the vibration component 2 is located. In this way, the vibration component 2 and the elastic portion 412 are separated by the connecting portion 410 and form a space in which they can vibrate. In the third preferred embodiment and with reference to Fig. 7, the connecting portion 410 is bent relative to the elastic portion 412 and protrudes to the side of the vibration component 2 to form a space for the vibration of the vibration component 2. In the present embodiment, the thickness of the connecting portion 410 may be smaller, larger, or equal to the thickness of the elastic portion 412. In the fourth preferred embodiment and with reference to Fig. 8, the difference from the second preferred embodiment is that the connecting portion 410 and the elastic portion 412 have the same thickness, and a partition plate 413 is provided between the connecting portion 410 and the vibration component 2 to separate the vibration component 2 and the elastic portion 412, thereby forming a space for the vibration of the vibration component 2.

[0028] As a preferred embodiment and with reference to Fig. 3 to 5, the two ends of the housing 1 are open along the vibration direction of the vibration component 2. For convenience, the end surface of the open end is referred to as the second end surface 14. The outer supports 40 of the two elastic members 4 are each connected to the second end surface 14, and the connection method can be, for example, adhesive bonding or welding. The outer support 40 includes a first surface 400 connected to the second end surface 14 and a second surface 401 arranged parallel to the first surface 400. When the bone conduction sound vibration device is mounted, it can be connected to external parts via its outer support 40, for example, to a plate of a wearable device used for contact with a person's face, thereby transmitting vibrations to the plate.Preferably, the connecting arm 41 does not project beyond the second surface 401 of the outer bracket 40 during the vibration process of the vibration component 2. Thus, the parts connected to the outer bracket 40 do not need to be provided with a structure that deflects the connecting arm 41, which can simplify the construction. Obviously, in an embodiment in which the elastic portion 421 is provided at an angle, as shown in FIG. Fig. 3 to 5, by controlling the distance between the outer bracket 40 and the vibration component 2 in the original position, the connecting arm 41 can be adjusted so that it does not exceed the outer bracket 40 in the vibration process.

[0029] As in Fig. 9, the outer bracket 40 serves to fasten the elastic element 4 to the housing 1 and comprises two first rod bodies 402, and a base 411 is connected between the two first rod bodies 402. Preferably, the two first rod bodies 402 are arranged in parallel, and the base 411 is connected to both first rod bodies 402. The lengths of the two first rod bodies 402 can be the same or different. In a preferred embodiment, the two first rod bodies 402 of the outer bracket 40 can be independent parts and are not connected to each other. In another preferred embodiment, the outer bracket 40 is annular and further comprises a second rod body 403, each connected between the two first rod bodies 402. As shown in Fig. 4, the ends of the two first rod bodies 402 are connected to the second rod bodies 403, and the entire outer bracket 40 has the shape of a rectangular ring. When the outer bracket 40 has a ring shape, its structural strength and rigidity are better, and the connection with the outer bracket 40 is generally stronger. Optionally, as shown in Fig. 4, Fig. 9 and Fig. 10, both ends of the receiving space 10 in the longitudinal direction have a wider portion 10a whose width W1 is greater than the width W2 of the remaining receiving space 10, and wherein the wider portion 10a is connected to the second end face 14 of the adjacent housing 1; wherein the width W3 at both ends in the longitudinal direction of the cavity 404 of the outer bracket 40 for receiving the connecting arm 41 is greater than the width W4 of the remaining cavity 404, wherein, when the outer bracket 40 is annular, the cavity 404 of the outer bracket 40 for receiving the connecting arm 41 is the inner hole of the outer bracket 40.

[0030] The housing 1 has two second end surfaces 14 located at the upper and lower ends, and an outer peripheral surface connected between the two second end surfaces 14. As shown in Fig. 10 to 13 and taking as an example the case that the housing 1 is cuboid-shaped, the outer peripheral surface of the housing comprises two opposite first side surfaces 15 and two opposite second side surfaces 16, wherein the first side surface 15 extends along the longitudinal direction of the housing 1 and the second side surface 16 extends along the width direction of the housing 1, wherein the height direction of the housing 1 coincides with the direction of the vibration axis A. The outer peripheral surface of the housing 1 is provided with a mounting hole 12 for mounting the coil 3. In the present embodiment, the mounting hole 12 is opened on the first side surface 15. In other embodiments, it may also be provided on the second side surface 16.

[0031] In a preferred embodiment, the mounting hole 12 is a blind hole provided on the first side surface 15 and extending in a direction perpendicular to the first side surface 15, but not connected to the first side surface 15 on the other side, wherein in this embodiment, the coil 3 is completely pushed out of the mounting hole 12 to complete the assembly. In another preferred embodiment, as shown in Fig. 13, the mounting hole 12 is a through hole that penetrates the housing 1 and communicates with the two first side surfaces 15, wherein in this embodiment the coil 3 can be inserted into the housing 1 from both sides.

[0032] In order to facilitate the insertion of the coil 3, the opening of the mounting hole 12 is horn-like, that is, the opening of the mounting hole 12 gradually increases outward, whereby the coil 3 can be guided into the mounting hole 12 for installation, which facilitates the assembly of the coil 3.

[0033] With reference to Fig. 11 to 13, the housing 1 is further provided with one or more projections 13 projecting into the mounting hole 12. The projections 13 project along the vibration axis A of the vibration component 2, thereby reducing the height-direction spacing of the mounting hole 12 and limiting the height-direction position of the coil 3. The housing 1 may be provided with only the projection 13 opposite the upper end surface 30 of the coil 3 or only the projection 13 opposite the lower end surface 31 of the coil 3, and may also be provided with a plurality of projections 13 simultaneously, corresponding respectively to the upper end surface 30 and the lower end surface 31 of the coil 3. By providing the projection 13, the height-direction position of the coil 3 can be more precisely defined, and at the same time, the fit between the coil 3 and other parts of the mounting hole 12 can be reduced, thereby reducing the machining effort.Preferably, the coil 3 rests against the protrusion 13. The connection between the coil 3 and the housing 1 is preferably made by adhesive. The provision of the protrusion 13 also creates a gap for receiving adhesive between the coil 3 and the surface of the mounting hole 12, thereby making the installation of the coil 3 more secure.

[0034] As a preferred embodiment, the housing 1 comprises two sets of projection groups, each arranged on the top and bottom of the coil 3, wherein each set of projection groups comprises four projections 13, each of which abuts two long sides and two short sides of the coil 3, so that the limiting effect is better. As shown in Fig. 11 and Fig. 13, the projection 13 corresponding to the short side is provided with a transition surface 130, wherein the transition surface 130 can be inclined or curved in order to better guide the coil 3 during installation in the mounting hole 12.

[0035] Since the coil 3 can protrude from the receiving space 10 of the housing 1, it is understandable that its outer periphery is not completely enclosed by the housing 1. Therefore, the space can be fully utilized, the overall structure can be made more compact, and the bone conduction sound vibration device can be miniaturized. Furthermore, the coil 3 is exposed to the housing 1 and its heat dissipation effect is improved.

[0036] In addition to the one-piece molding, the housing 1 can also be formed by joining several parts. Preferably, the housing comprises, as shown in Fig. 14, an upper shell 17 and a lower shell 18 and is produced by joining the upper shell 17 and the lower shell 18. The connecting surface 19 of the two shells penetrates the mounting hole 12, so that the mounting hole 12 is located at least partially on one of the shells and is provided with an opening on the connecting surface 19. In this way, when installing the coil 3, first the coil 3 can be mounted in the mounting hole 12 of the upper shell 17 or the lower shell 18, then another shell is welded to this shell to form the housing 1, thereby realizing the mounting of the coil 3 in the housing 1, which can simplify the assembly process and facilitate assembly.

[0037] In a preferred embodiment, as in Fig. As shown in Figure 15, the vibration component 2 consists of several parts, and specifically, it includes a magnetically conductive plate 20 and two magnets 21 connected at both ends of the magnetically conductive plate 20. The two magnets 21 are arranged opposite each other with the same poles, for example, the N poles of the two magnets 21 are adjacent to each other and the S poles are located at both ends of the vibration component 2. The coil 3 surrounds the outer circumference of the magnetically conductive plate 20, and the magnetic flux lines of the two magnets 21 can pass through the coil 3 in a more concentrated manner, thereby improving the utilization rate of the magnetic field and increasing the sensitivity and driving force of the vibration of the vibration component 2. Preferably, the upper and lower ends of the coil 3 extend beyond the magnetically conductive plate 20 and surround the two magnets 21 to further improve the utilization of the magnetic field. Fig. In the embodiment shown in Fig. 15, the magnets 21 and the magnetically conductive plate 20 are arranged along the vibration direction of the vibration component 2.

[0038] In a preferred embodiment and with reference to Fig. 16, the vibration component 2 is an integrated single part, which forms on the vibration component 2 a magnetically conductive section 22 and two magnetic sections 23, which are each arranged on both sides of the magnetically conductive section 22 by magnetizing the magnetically conductive material, wherein the magnetically conductive section 22 and the magnetic sections 23 are each part of the vibration component 2 and are not single parts, wherein Fig. 16 shows the boundary between the magnetically conductive portion 22 and the magnetic portion 23 with a dashed line. The magnetically conductive portion 22 has no magnetism, and the two magnetic portions 23 have magnetism and are arranged opposite each other with the same pole, with the coil 3 surrounding the outer periphery of the magnetically conductive portion 22. It is also preferred that the upper and lower ends of the coil 3 protrude beyond the magnetically conductive portion 22 and surround the outside of the two magnetic portions 23 to improve the utilization of the magnetic field. Fig. In the embodiment shown in Fig. 16, the magnetic portion 23 and the magnetically conductive portions 22 are arranged along the vibration direction of the vibration component 2.

[0039] In a preferred embodiment and with reference to Fig. 17, the vibration component 2 comprises a magnet 21 and a magnetically conductive plate 20, and the number of magnetically conductive plates 20 is at least two, wherein two adjacent magnetically conductive plates 20 are connected to each other via the magnet 21, that is, both ends of the magnet 21 are respectively connected to magnetically conductive plates 20. The magnet 21 is magnetized along the vibration direction, and the magnetically conductive plate 20 and the magnet 21 are arranged along the vibration direction. In this embodiment, at least one magnetically conductive plate 20 is surrounded by a coil 3 on its outer circumference. Preferably, the outer circumference of the two magnetically conductive plates 20 is each surrounded by a coil 3, wherein the current directions in two adjacent coils 3 are opposite at the same time.It is understood that the structure of the housing 1 can be adapted to changes, and, for example, the number and position of the mounting holes 12 can be changed accordingly to insert the corresponding coil 3. Furthermore, in this embodiment, the vibration component 2 can be separate or integrated.

[0040] The present utility model also proposes bone conduction glasses comprising the above-described bone conduction sound oscillation device. The bone conduction glasses also comprise strip-shaped temples, wherein the bone conduction sound oscillation device is strip-shaped and arranged in the temples. Since the bone conduction sound oscillation device is strip-shaped and adapts to the shape of the temples, the cross-sectional area of ​​the temples can be effectively reduced, making wearing the bone conduction glasses more comfortable.

[0041] As a preferred embodiment, the aspect ratio (ratio of length a to width b) of the bone conduction vibration device is 1.2 to 8. It is further preferred that the aspect ratio be between 3 and 5, and it is further preferred that the aspect ratio of the bone conduction vibration device be 4. By setting an appropriate aspect ratio, it is helpful to improve the performance of the bone conduction vibration device while making optimal use of space. Naturally, since the aspect ratio of the bone conduction vibration unit is large and the width and thickness are small, the temples can be thinner and more comfortable, lighter, and more comfortable to wear.

[0042] The present utility model also proposes a wearable device, which may be, for example, headphones, glasses, helmets or other devices suitable for wearing on the head, comprising a device for oscillating sound by bone conduction as described above.

[0043] The above embodiments are only specific embodiments of the present utility model, and any other improvements made on the basis of the concept of the present utility model are considered to be within the scope of protection of the present utility model. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] CN 202210557598.9

[0001]

Claims

[1] Device for the vibration of sound by bone conduction, characterized by that the device comprises: a housing (1) provided with a receiving space (10), a vibration component (2) provided in the receiving space (10); a coil (3) which is relatively firmly connected to the housing (1) and surrounds the outer periphery of the vibration component (2), wherein a flexible circuit board (5) connected to the coil (3) is provided outside the housing (1), wherein the flexible circuit board (5) is provided at one end of the longitudinal direction of the housing (1) for connection to a control circuit; and two elastic elements (4) connected to both ends of the vibration component (2) and each connected to the housing (1). [2] Device for vibrating sound by bone conduction according to claim 1, characterized bythat the device for vibrating sound by bone conduction is strip-shaped, wherein the vibration component (2), the coil (3) and the elastic elements (4) are also strip-shaped, and wherein the length directions of the device for vibrating sound by bone conduction, the housing (1), the vibration component (2), the coil (3) and the elastic elements (4) are consistent. [3] Device for vibrating sound by bone conduction according to claim 1, characterized byin that the two elastic elements (4) are each connected to both ends of the vibration component (2) along a vibration direction, wherein the two ends of the housing (1) are provided with openings along the vibration direction of the vibration component (2) so that the vibration component (2) can be inserted from the openings into the receiving space (10), wherein the respective elastic element (4) comprises an outer holder (40) and a connecting arm (41), wherein the outer holder (40) is connected to an end face of the open end of the housing (1), wherein one end of the connecting arm (41) is connected to the outer holder (40) and the other end is connected to the vibration component (2). [4] Device for vibrating sound by bone conduction according to claim 3, characterized by that the connecting arm (41) extends along the longitudinal direction of the elastic element (4). [5] Device for vibrating sound by bone conduction according to claim 3, characterized by in that the connecting arm (41) comprises a base (411) connected to the outer bracket (40), a connecting portion (410) connected to the first end face (24) of the vibration component (2), and an elastic portion (412) connected between the base (411) and the portion (410), wherein the connecting arm (41) extends from the base (411) along the longitudinal direction of the elastic element (4). [6] Device for vibrating sound by bone conduction according to claim 3, characterized byin that the vibration component (2) comprises a plane of symmetry (2a) perpendicular to its longitudinal direction, wherein the elastic element (410) and the base (411) of the elastic element (4) are each arranged on either side of the plane of symmetry (2), and wherein the connecting arm (41) of the two elastic elements (4) are centrally symmetrical to the center of gravity of the vibration component (2). [7] Device for vibrating sound by bone conduction according to claim 3, characterized by that the elastic portion (412) is inclined to a side on which the vibration component (2) is located; wherein the connecting portion (410) curves relative to the elastic portion (412) to a side on which the vibration component (2) is located; or wherein a separating plate (413) is connected between the connecting portion (410) and the vibration component (2). [8] Device for vibrating sound by bone conduction according to claim 3, characterized by in that the outer support (40) comprises a first surface (400) which is connected to the housing (1) and a second surface (401) which is opposite the first surface (400), wherein during a vibration process of the vibration component (2) the connecting arm (41) does not exceed the second surface (401) of the outer support (40). [9] Device for vibrating sound by bone conduction according to claim 3, characterized bythat both ends of the receiving space (10) have a wider section (10a) in the longitudinal direction, the width W1 of which is greater than the width W2 of the remaining receiving space (10), and wherein the wider section (10a) is connected to the end face of the open end of the housing (1) adjacent thereto; wherein the width W3 at both ends in the longitudinal direction of the cavity of the outer holder (40) for receiving the connecting arm (41) is greater than the width W4 of the remaining cavity. [10] Device for vibrating sound by bone conduction according to claim 5, characterized byin that the outer support (40) is annular, and the outer support (40) comprises two first rod bodies (402) arranged opposite one another and two second rod bodies (403) each connected between the two first rod bodies (402), wherein the first rod bodies (402) and the second rod bodies (403) each extend along the longitudinal direction and the width direction of the bone conduction sound vibration device, wherein the base (411) is connected between the two first rod bodies (402) and has no contact with the second rod bodies (403). [11] Device for vibrating sound by bone conduction according to claim 5, characterized by that the elastic portion (412) is provided with at least one hollow hole (414), wherein the stiffness and strength of the elastic portion (412) are adjusted by controlling the area of ​​the hollow hole (414). [12] Device for vibrating sound by bone conduction according to claim 1, characterized by that the vibration component (2) comprises a magnetically conductive plate (20) and two magnets (21) connected to both ends of the magnetically conductive plate (20), wherein the two magnets (21) are arranged opposite one another with the same pole, wherein the coil (3) surrounds the outer circumference of the magnetically conductive plate (20), wherein the magnets (21) and the magnetically conductive plate (20) are arranged along the vibration direction of the vibration component (2); or wherein the vibration component (2) comprises a magnetically conductive portion (22) and two magnetic portions (23), each arranged on either side of the magnetically conductive portion (22), wherein the two magnetic portions (23) are arranged opposite one another with the same pole, wherein the coil (3) surrounds the outer circumference of the magnetically conductive portion (22), wherein the magnetic portions (23) and the magnetically conductive portion (22) are arranged along the vibration direction of the vibration component (2); or wherein the vibration component (2) comprises a magnet (21) and two magnetically conductive plates (20) connected to both ends of the magnet (21), wherein the magnet (21) is magnetized along the vibration direction of the vibration component (2), and wherein the outer circumference of at least one magnetically conductive plate (20) is surrounded by a coil (3), wherein the magnet (21) and the magnetically conductive plate (20) are arranged along the vibration direction of the vibration component (2). [13] Device for vibrating sound by bone conduction according to one of claims 1 to 12, characterized by that the housing (1) is provided with one or more projections (13) for limiting the position of the coil (3) in the height direction. [14] Device for vibrating sound by bone conduction according to claim 13, characterized bythat the outer peripheral surface of the housing (1) is provided with a mounting hole (12) for mounting the coil (3), wherein the mounting hole (12) is a blind hole or a through hole; wherein the outer peripheral surface comprises two opposite first side surfaces (15) and two opposite second side surfaces (16), wherein the first side surfaces (15) extend along the longitudinal direction of the housing (1), wherein the second side surfaces (16) extend along the width direction of the housing (1), wherein the mounting hole (12) is provided on the respective first side surface (15) or the second side surface (16). [15] Device for vibrating sound by bone conduction according to claim 14, characterized by that the opening of the mounting hole (12) gradually increases outwards. [16] Device for vibrating sound by bone conduction according to claim 14, characterized by that the projections (13) protrude into the mounting hole (12). [17] Device for vibrating sound by bone conduction according to claim 13, characterized by that the projections (13) are all in contact with the upper end face (30) of the coil (3); or wherein the projections (13) are all in contact with the lower end face (31) of the coil (3); or wherein among the plurality of projections (13), some of the projections (13) are in contact with the upper end of the coil (3) and some of the projections (13) are in contact with the lower end of the coil (3). [18] Device for vibrating sound by bone conduction according to claim 14, characterized by that the housing (1) is formed in one piece; or wherein the housing (1) comprises an upper shell (17) and a lower shell (18) which are connected to one another, wherein the connecting surface (19) of the upper shell (17) and the lower shell (18) extends through the mounting hole (12). [19] Device for vibrating sound by bone conduction according to one of claims 1 to 12, characterized by that the aspect ratio of the device for vibrating sound by bone conduction is 1.2 to 8. [20] Device for vibrating sound by bone conduction according to claim 19, characterized by that the aspect ratio of the device for vibrating sound by bone conduction is 3 to 5. [21] Device for vibrating sound by bone conduction according to one of claims 1 to 12, characterized by that the material of the housing (1) is plastic, aluminum or stainless steel; wherein the material of the elastic element (4) is stainless steel, plastic or beryllium copper. [22] Portable device, characterized by that the device comprises a device for oscillating sound by bone conduction according to one of claims 1 to 21.

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