CN207720370U - bone conduction sound device - Google Patents

Abstract

The utility model discloses a kind of osteoacusis sound-producing devices, the osteoacusis sound-producing device includes sound generating mechanism and fixed mechanism, the fixed mechanism acts on the sound generating mechanism so that at least when the sound generating mechanism is in use state, the sound generating mechanism is fitted in the auricle back side of user.By the above-mentioned means, the utility model can improve the sound quality of osteoacusis sound-producing device, hearing effect is improved.

Description

bone conduction sound device

technical field

The utility model relates to the technical field of earphones, in particular to a bone conduction sound generating device.

Background technique

Generally, sound is transmitted to the ear through two transmission routes, namely air conduction and bone conduction, thereby producing hearing.

In the bone conduction pathway, the bone conduction vibration speaker can convert the audio electrical signal into a mechanical vibration signal, and transmit the vibration signal to the cochlea through the biological tissue and bone, so that the user can hear the sound. Compared with the classic sound conduction method of generating sound waves through the diaphragm, bone conduction saves many steps of sound wave transmission, and can achieve clear sound reproduction in a noisy environment, and the sound waves will not affect others due to diffusion in the air .

However, the inventors of the present application have discovered in the long-term research and development process that in the current common bone conduction sound generating devices, the bone conduction speaker is usually attached to the mastoid (such as a bone conduction hearing aid), the front of the tragus (such as a bone conduction stereo Headphones), other parts of the skull (such as bone conduction communication helmets), etc., the above-mentioned bone conduction transmission paths are sound/vibration transmitted to the hard bone after passing through the skin and subcutaneous soft tissue, and then transmitted to the cochlea to produce bone conduction hearing, which will Narrowing the frequency bandwidth of bone conduction sound/vibration makes the sound quality worse and the listening experience is not good.

Utility model content

The technical problem mainly solved by the utility model is how to improve the sound quality of the bone conduction sound generating device.

In order to solve the above technical problems, a technical solution adopted by the utility model is: a bone conduction sounding device, including a sounding mechanism and a fixing mechanism, and the fixing mechanism acts on the sounding mechanism, so that at least when the sounding mechanism is in use state, the sound-generating mechanism is attached to the back of the user's auricle.

The beneficial effect of the utility model is: different from the situation of the prior art, the bone conduction sounding device of the utility model can attach the sounding mechanism to the back of the user's auricle when the user uses it, so that the ear cartilage of the auricle can be used To transmit bone conduction sound/vibration, due to the low stiffness of the ear cartilage, the transmission efficiency of low-frequency sound/vibration is high, which can reduce the loss of low-frequency sound/vibration during the transmission process; and the auricle itself and its connected tissues will also produce corresponding vibrations, The corresponding air conduction sound is generated to further compensate the loss of low frequency in the transmission process of bone conduction sound/vibration and the loss of high frequency caused by skin and subcutaneous soft tissue, thereby improving the sound quality of the bone conduction sound generating device.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some implementations of the present invention. For example, those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative efforts. in:

Fig. 1 is a schematic diagram of the transmission path of bone conduction sound/vibration in the prior art;

Fig. 2 is the amplitude-frequency curve of the transmission of sound/vibration with skin and subcutaneous tissue and without skin and subcutaneous tissue;

Fig. 3 is the amplitude-frequency curve of the sound/vibration transmission of hard bone and soft bone;

Fig. 4 is a structural schematic diagram of an embodiment of the bone conduction sounding device of the present invention;

Fig. 5 is a schematic diagram of the transmission path of the bone conduction sound/vibration of the present invention;

Fig. 6 is the amplitude-frequency curve of the transmission of sound/vibration between the traditional bonding method of the sounding mechanism in the prior art and the bonding method of the sounding mechanism in the utility model to the auricle;

Fig. 7 is a schematic diagram of the structure of the human ear;

Fig. 8 is a sectional view of the ear along the A-A axis in Fig. 7;

Fig. 9 is a structural schematic diagram of the sounding mechanism in an embodiment of the bone conduction sounding device of the present invention;

Fig. 10 is a schematic structural view of the bonding surface in an embodiment of the bone conduction sounding device of the present invention;

Fig. 11 is a schematic diagram of the pressure test of the auricle by the sounding mechanism in an embodiment of the bone conduction sounding device of the present invention;

Fig. 12 is a structural schematic diagram of a positioning member in an embodiment of the bone conduction sounding device of the present invention;

Fig. 13 is a schematic diagram of another structure of the positioning member in an embodiment of the bone conduction sounding device of the present invention;

Figure 14 to Figure 15 are schematic diagrams of relevant surfaces in an embodiment of the bone conduction sound generating device of the present invention;

Fig. 16 is a schematic structural view of an embodiment of the bone conduction sounding device of the present invention;

Fig. 17 is a schematic structural view of an embodiment of the bone conduction sounding device of the present invention;

Figure 18 to Figure 19 are schematic diagrams of relevant surfaces in an embodiment of the bone conduction sound generating device of the present invention;

20 to 21 are schematic diagrams of the distances between related components in an embodiment of the bone conduction sound generating device of the present invention.

Detailed ways

Before explaining the various implementation modes of the present utility model, the relevant prior art will be briefly introduced.

Different from the air conduction path, the sound/vibration medium of the bone conduction path is solid or a solid-liquid mixture. The characteristics of the transmission path have a significant impact on the sound quality of bone conduction. Therefore, it is necessary to select the appropriate bone conduction transmission path, adjust and control the transmission path It is an important means to improve the sound quality of bone conduction.

A common solution is to attach the bone conduction speaker to the mastoid (such as a bone conduction hearing aid), the front of the tragus (such as a bone conduction stereo headset), and other parts of the skull (such as a bone conduction communication helmet), etc. The above bone conduction transmission paths are all The sound/vibration is transmitted to the hard bone after passing through the skin and subcutaneous soft tissue, and then transmitted to the cochlea to produce bone conduction hearing. Please refer to Figure 1 for the specific transmission path. This transmission path will have the following two main effects on the sound quality of bone conduction: (1) The skin and subcutaneous soft tissue have relatively large mechanical damping, and their transmission efficiency for high-frequency sound/vibration is low, making the high-frequency sound of bone conduction (2) The hard bone on the transmission path has greater stiffness, and its transmission efficiency for low-frequency sound/vibration is low, making the low-frequency of bone conduction sound weak or missing.

In addition, the influence of the rigidity of the skin, subcutaneous tissue, and hard bone on the frequency-domain characteristics of the transmission path can be calculated by means of mathematical calculation. First, please refer to Figure 2. It can be seen from Figure 2 that the effect of the skin and subcutaneous tissue makes the amplitude-frequency curve of the transmission path drop significantly in the middle and high frequency bands, which shows that the skin and subcutaneous tissue have a strong influence on the high frequency of bone conduction sound. has a weakening effect. In addition, please refer to FIG. 3 , the change of the rigidity of the hard bone makes the amplitude-frequency curve of the transmission path change in the whole frequency range. In particular, it can significantly affect the transmission characteristics of the middle and low frequencies, increase the stiffness of the hard bone, and decrease the amplitude-frequency curve of the middle and low frequencies, indicating that the stiffness of the hard bone has a weakening effect on the middle and low frequencies of the bone conduction sound.

That is to say, the above two factors will reduce the bandwidth of bone conduction sound/vibration, which will lead to poor sound quality and poor listening experience.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. . Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

Referring to Fig. 4, Fig. 4 is a structural schematic diagram of an embodiment of the bone conduction sound generating device of the present invention.

It should be pointed out that the bone conduction sound generating device in the embodiment of the present invention can be various devices with the function of a bone conduction earphone, for example, it can be a bone conduction earphone, or glasses, earphones, etc. with the function of a bone conduction sound generating device. Wearing or hanging a fixing mechanism, a hat and headgear with the function of a bone conduction sounding device, or other head-wearing engineering supplies, head-wearing military supplies, or hearing aids such as hearing aids, etc., are not specifically limited here.

Wherein, the bone conduction sounding device includes: a sounding mechanism 11 and a fixing mechanism 12 . Wherein, the fixing mechanism 12 acts on the sounding mechanism 11, so that at least when the sounding mechanism 11 is in use, the sounding mechanism 11 is attached to the back of the user's auricle.

It should be pointed out that the auricle is a part of the outer ear and is mainly composed of cartilage. In this embodiment, the sound generating mechanism 11 is bonded to the back of the auricle, and the cartilage of the auricle can be used to transmit bone conduction sound/vibration.

Compared with hard bone, ear cartilage has less rigidity, and its transmission efficiency to low-frequency sound/vibration is higher, which can better transmit low-frequency and reduce the loss of low-frequency in the transmission process; and because the auricle is fan-shaped, in In the process of transmitting bone conduction sound/vibration, the auricle itself and its connected tissues will also vibrate accordingly, and then produce corresponding air-conducted sound; at the same time, in the ear canal, the vibration of the ear canal wall caused by the vibration of the auricle makes the air in the ear canal vibrate. The sound produces high-frequency resonance. These air-conducted acoustics can further compensate for the loss of low frequencies during the transmission of bone conduction sound/vibration and the loss of high frequencies caused by the skin and subcutaneous soft tissue. Specifically, when the bone conduction speaker is attached to the auricle, the transmission path of the bone conduction sound/vibration is shown in Figure 5, that is to say, the transmission path of the auricle cartilage is added to the transmission path.

In addition, please further refer to FIG. 6 , the frequency-domain characteristics of the transfer path of the solution of the sound-emitting mechanism 11 fitting the back of the auricle and the fitting solution in the related prior art can be calculated by using a mathematical calculation method. Compared with the fitting scheme in the prior art, the amplitude-frequency curve of the transmission path is significantly improved in the middle and low frequencies due to the addition of the auricular cartilage link in the transmission path, which further shows that in this embodiment, the sound-generating mechanism 11 is connected with the user The fit on the back of the pinna can reduce the loss of low frequency in the transmission process.

Further, attaching the sounding mechanism 11 on the back of the auricle can improve the sound quality while reducing the impact on the ear canal during the sound transmission process. The mechanism 11 can be hidden behind the ear without showing up to meet different needs of users.

Optionally, the fixing mechanism 12 acts on the sounding mechanism 11, so that the sounding mechanism 11 fits to a predetermined area on the back of the user's auricle. Furthermore, since the back of the auricle facing the crus of the helix is relatively flat, it is suitable for the sound-generating mechanism 11 to be fitted with a larger area to obtain higher vibration transmission efficiency and greater volume; in addition, the cartilage layer in this area is thicker , which is closer to the inner ear canal and has stronger toughness. While obtaining better sound quality, it can avoid discomfort such as vibration and numbness caused by vibration transmitted through the edge of the auricle. Therefore, the area on the back of the auricle facing the helix crus can be used As the predetermined area, please refer to Fig. 7 and Fig. 8 for details. Specifically, the predetermined area may be an area with an area of 20 cm ² centered on the back of the auricle facing the crus of the helix; it may also be an area of 10 cm ² centered on the back of the auricle facing the crus of the helix, That is, the part of the back of the auricle except the helix; or it can also be an area with an area of 5 cm ² centered on the back of the auricle facing the crus of the helix, that is, the area of the back of the auricle corresponding to the concha cavity.

In addition, the fixing mechanism 12 may be a mechanism specially used for fixing the bone conduction sounding device. When the user needs to use the bone conduction sounding device, the fixing mechanism 12 is fixed near the user's ear so that the sounding mechanism 11 fits on the back of the auricle. Or, the fixing mechanism 12 can also be other equipment with independent functions connected with the sounding mechanism 11. When the user wears the device, the sounding mechanism 11 can be attached to the back of the user's auricle directly or indirectly through certain means. Therefore, when the user uses other functions of the object, the function of the bone conduction sound generating device can also be used.

Wherein, the sound generating mechanism 11 may further include a bone conduction speaker, and optionally, the bone conduction speaker may be at least one of an electromagnetic speaker, a piezoelectric speaker, and an electrostatic speaker. Specifically, the electromagnetic speaker may be a moving coil speaker or a moving iron speaker.

Specifically, please refer to FIG. 9 further, the electromagnetic speaker has a compound vibration structure. Wherein, the voice coil 21 is placed in the magnetic gap formed by the magnetic circuit 22, the voice coil 21 is connected with the support 23, and the support 23 is connected with the magnetic circuit through the first elastic element 24; at the same time, the support 23 is also connected with the housing through the second elastic element 25 26 connection; the vibrating plate 27 is connected with the support 23 to transmit the vibration from the support 23; the vibrating plate 27 is connected with the soft pad 28, and the soft pad 28 is in contact with the back of the auricle, and the vibration produced by the bone conduction speaker is transmitted through the vibrating plate 27 and the soft pad 28 to the pinna.

Optionally, the sound-generating mechanism 11 includes a fitting surface 111 , which is used to fit on the back of the user's auricle when the sound-generating mechanism 11 is in use, so as to transmit sound/vibration through the back of the auricle. Specifically, the fitting surface 111 can be the cushion 28 wrapped around the periphery of the sound generating mechanism 11 , or the vibration plate 27 of the sound generating mechanism that is directly exposed.

Wherein, the fitting surface 111 is at least partly a curved surface, for example, may include a curved surface protruding toward the back of the auricle, which enables the sound-generating mechanism 11 to fit well on the irregularly shaped back of the auricle. Specifically, the fitting surface 111 can also include a convex arc surface with a curvature not greater than 1, so that the sounding mechanism 11 can further fully contact the back of the auricle, thereby improving the sound/vibration transmission of the sounding mechanism 11 through the back of the auricle. s efficiency.

In addition, please refer to FIG. 10 , in an application scenario, the fitting surface 111 includes a plane 111a located in the middle, and a curved surface 111b extending along the circumference of the plane, the plane 111a and the curved surface 111b together form a convex arc towards the back of the auricle noodle.

Optionally, the area of the fitting surface 111 is not less than 0.5 cm ² , or not less than 1 cm ² . Since the area of the fitting surface 111 in this embodiment is large enough, the contact area between the sounding mechanism 11 and the back of the auricle can be further made large enough, so that on the one hand, the contact area between the fitting surface 111 of the sounding mechanism 11 and the back of the auricle of the user can be reduced. The pressure can improve the comfort of the user wearing the bone conduction sound generating device; on the other hand, it can improve the transmission efficiency of the bone conduction sound/vibration, and make the volume of the sound loud enough to meet the needs of the user.

Optionally, the fixing mechanism 12 includes a positioning piece 121 and a connecting piece 122 . Wherein, the positioning piece 121 is used to be positioned on the user's ear or head, and the connecting piece 122 can be an elastic structure, which is respectively connected with the positioning piece 121 and the sounding mechanism 11, so that the sounding mechanism 11 can be further fixed on the user's ear, so as to stick to the user's ear. fit the back of the user's pinna.

Specifically, the connecting piece 122 can be a concave arc matching the auricle, and the recess faces the front of the user's ear, so that when the user uses the bone conduction sound generating device, the connecting piece 122 can be arranged around the back of the user's auricle.

Wherein, the connector 122 can be a flexible connecting rod, and the flexible connecting rod can be made of rubber, or a composite structure of rubber and elastic metal wire, such as a composite structure of rubber and titanium wire or titanium alloy wire, or a composite structure of rubber and memory alloy Composite structure of silk.

When the positioning part 121 is positioned on the user's ear or head, and at least when the bone conduction sounding device is in use, with the support of the positioning part 121, the connecting part 122 can apply elastic force to the sounding mechanism 11, so that the sounding mechanism 11 Pressure fit against the back of the user's pinna.

Wherein, the predetermined pressure refers to the pressure that the fitting surface 111 fits the user's ear in a direction perpendicular to the fitting surface 111 when the user wears the bone conduction sound generating device normally. The materials with different elastic coefficients of the connecting piece 122 , as well as the different shapes and specifications of the connecting piece 122 will all affect the predetermined pressure exerted by the sound generating mechanism 11 on the back of the user's auricle. Specifically, the pressure of the fitting surface 11 on the back of the user's auricle can be obtained through testing. Specifically, please refer to Figure 11. Under normal use by the user, the fitting surface 111 of the sounding mechanism 11 fits well with the back of the auricle. . The hinge is fixed with the central point of the connection between the positioning piece 121 and the connecting piece 122 as a fixed point, and the sound-generating mechanism 11 is pulled away from the back of the auricle along a direction perpendicular to the fitting surface 111 using a force-measuring device. Take the force measured when the sounding mechanism 11 is just separated from the back of the auricle as the pressure exerted by the sounding mechanism 11 on the back of the user's auricle, and then further determine the material, shape, and Specifications, etc., to adjust the corresponding pressure within the appropriate range.

Of course, the predetermined pressure is not necessarily a fixed value. For example, when the user wears the bone conduction sound generating device, different wearing states and people with different head shapes may have different corresponding preset pressure values. At this time, since the connecting member 122 is a flexible connecting rod, it can be deformed to different degrees according to different head shapes, so as to adapt to different situations.

Specifically, the upper limit of the predetermined pressure can be 1N, which can prevent the sounding mechanism 11 from being deformed due to excessive pressure and cause the user to feel pain and other discomfort; the lower limit can be 0.1N, so that the sounding mechanism 11 During operation, the fitting surface 111 is always attached to the back of the auricle, and the sound-generating mechanism 11 will not be detached from the back of the auricle due to the vibration of the bone conduction speaker.

Optionally, the upper limit of the predetermined pressure can also be 0.8N, which can further reduce the deformation of the auricle and ensure that the user will not experience discomfort when wearing it for a long time; at the same time, the lower limit can also be 0.3N, so that the sounding mechanism 11 can be stabilized While fitting the back of the user's auricle, the contact area between the back of the auricle and the sounding mechanism 11 becomes larger due to proper deformation of the auricle, and then there is a large enough contact area to transmit bone conduction sound/vibration, so that the bone conduction sounding device There is enough volume.

Specifically, the upper limit and lower limit of the predetermined pressure can also be other values between 0.1N-1N, so as to meet the different needs of people such as Europeans, Americans, Asians, men, women, etc., which are not specifically limited here.

In an application scenario, please refer to FIG. 12 , the positioning part 221 is a fixing mechanism for the head hanging behind the head, one end of the connecting part 222 is directly or hingedly connected to the fixing mechanism for the head hanging behind the head, and the other end is connected to the sounding mechanism 21 .

It should be noted that in this application scenario, the specific connection manner between the connecting member 122 and the rear hanging fixing mechanism is not limited, for example, other connection manners other than the above-mentioned hinge connection may also be used, which is not limited here.

Further, the head hanging fixing mechanism includes a head hanging front part 2211 that is connected to each other and is placed in front of the ear and a head hanging rear part 2212 that is looped behind the head. Hang the below of the rear portion, and the other end is connected to the sound-generating mechanism 21.

Wherein, the head hanging rear part 2212 can be set around the back of the head, and the user can wear it from the back of the head when in use, thereby bypassing the auricle and putting the head hanging front part 2211 in front of the ear. At the same time, the head hanging rear part 2212 The ring fits over the back of the head. It should be pointed out that the elastic bracket of the earphone is in a concave arc shape, and the concave part faces the front of the headgear, so that when the user wears it, the elastic bracket can be further wrapped around the back of the user's auricle, and the sound-generating mechanism 21 can fit The surface 211 is attached to the back of the auricle by means of the elastic support.

In another application scenario, the connecting piece may be a part of the earwear, or the positioning piece and the connecting piece are integrally formed into the earwear as a fixing mechanism for the sound-generating mechanism.

Specifically, please refer to Fig. 13, the earwear can be a ring-shaped piece matching the shape of the ear periphery, including the earwear front part 321 located in front of the ear and the earwear rear part 322 located behind the ear, and the sounding mechanism 31 is fixed behind the earwear part 322 and facing the front part 321 of the earwear, so that when the user wears the earwear, the sound-generating mechanism 31 can be attached to the back of the auricle of the user's ear.

Of course, in addition to the end-to-end connection of the front part 321 of the earwear and the rear part 322 of the earwear as shown in Figure 13, the earwear in this application scenario can also be a semi-enclosed open structure, for example, it can be C-shaped Partially encircling earwear can be fixed on the periphery of the user's ear by partially encircling the periphery of the base of the ear, and further fit the fitting surface of the sound-generating mechanism to the back of the user's auricle.

In another application scenario, please continue to refer to FIG. 4 , the positioning member 121 includes a pressing bar 1213 that is pressed above the ear. Specifically, the pressing bar 1213 can be located at the base of the ear corresponding to the tip of the ear to form a certain support for the pressing bar 1213 . Wherein, the pressing bar 1213 can be a straight bar, or can be a curved bar with a certain radian. For example, the pressing bar 1213 can form a certain concave arc toward the user's ear, thereby increasing the contact area between the pressing bar 1213 and the ear to reduce The pressure bar 1213 acts on the pressure of the user's ear, thereby improving the user's comfort.

Further, the lower end of the connecting piece 122 is connected to the sounding mechanism 11, and the upper end of the connecting piece 122 can be arranged on the end of the pressure rod 1213 facing behind the ear through a hinge connection, so that the sounding mechanism 11 can pass through the connection between the connecting piece 122 and the pressing rod 1213. The rotating shaft 123 of the hinge rotates to adjust the angle between the sound generating mechanism 11 and the pressing rod 1213 . In addition, similar to the connection between the rear hanging fixing mechanism and the connecting piece 122 in FIG. 12 , in this application scenario, the connecting piece 122 and the pressing rod 1213 can also be connected in other ways than the above-mentioned hinge connection, and no specific details are given. limited.

Please continue to refer to FIG. 4 , in an application scenario, the hinge is wrapped with a protective cover 124 . Wherein, the protective cover 124 can be made of soft material, such as rubber, silica gel and so on.

Specifically, the protective cover 124 can be a sleeve structure with at least one pleat, and the sleeve structure is sleeved on the periphery of the hinge shaft 123. When the connecting member 122 rotates around the hinge shaft 123, the folds can be stretched and contracted. To adapt to the distance between the connecting piece 122 and the pressure bar 1213, so that on the one hand, the setting of the protective cover 124 can cover the hinge, so as to prevent the hair from being caught due to the rotation between the connecting piece 122 and the pressing bar 1213 when the user wears it. On the other hand, the wrinkled sleeve structure adapts to the rotation between the connecting piece 122 and the pressure rod 1213 by opening and shrinking the wrinkle, so as to avoid passing through when the protective cover 124 is in a straight state. The self-elasticity of the protective sheath 124 adapts to the expansion and contraction caused by the above rotation and is easily deformed or even damaged, thereby protecting the protective sheath 124 itself and prolonging the service life of the protective sheath 124 .

In addition, the protective cover 124 can also be a block structure with a slot, through which the position of the slot is sheathed on the periphery of the rotating shaft 123 of the hinge from the top of the positioning member 121 toward the bottom, forming a semi-enclosed protective cover 124 . Wherein, the block structure with a slot can be fixed on the positioning member 121, so that when the connecting member 122 rotates around the hinge shaft 123, it can protect the user's hair from damage as mentioned above.

Optionally, the vertical plane α of the hinge shaft 123, the symmetry plane β of the connector 122, and the center point O of the ear-fitting surface 111 of the sound-generating mechanism 11 are in the same plane, or within a predetermined error range of the relative plane. Inside.

Wherein, the vertical plane α of the hinge shaft 123 refers to a plane that is perpendicular to the axial direction of the hinge shaft 123 and divides the hinge shaft 123 symmetrically. Please refer to FIG. 14 for details.

The symmetry plane β of the connector 122 refers to the plane that divides the connector 122 symmetrically, that is, the connectors 122 are symmetrically distributed on both sides of the symmetry plane β of the connector 122 , please refer to FIG. 15 for details.

Wherein, the predetermined error range can be obtained comprehensively based on experience, statistical data of the material and specification of the connector, and the shape of the ear.

It should be pointed out that when the vertical plane α of the rotating shaft 123 of the hinge, the symmetry plane β of the connecting piece 122 and the center point of the fitting surface 111 of the sounding mechanism 11 that fits the ear are in the same plane, it can be connected with the connecting piece 122 The sounding mechanism 11 can be directly attached to the back of the user's auricle. When the connecting piece 122 is deformed under force, the deformation direction and the moving direction of the sounding mechanism 11 are consistent, and they are all located in this plane. Not in the same plane, and when the connecting piece 122 is elastically deformed under force, the sounding mechanism 11 cannot fit or completely fit to the back of the user’s auricle due to the twisting of the connecting piece 122 and the sounding mechanism 11, resulting in sound/vibration The reduction of the transmission efficiency further reduces the sound quality of the bone conduction sound generating device. Certainly, the vertical plane α of the rotating shaft 123 of the hinge, the symmetry plane β of the connecting piece 122 and the center point of the fitting surface 111 of the sounding mechanism 11 fitting the ear can be within the predetermined error range of the relative plane, so that in the actual use process Among them, it will not cause too much impact on the user's use, but it should be pointed out that at this time, the bonding effect between the bonding surface 111 of the sound generating mechanism 11 and the back of the user's auricle will be affected to a certain extent.

Please refer to FIG. 16 , in another application scenario, the bone conduction sound generating device is bone conduction glasses. Wherein, fixing mechanism 12 is spectacle frame, and spectacle frame 12 comprises spectacle frame 125 and spectacle leg 126, and spectacle leg 126 comprises spectacle leg main body 1261 that is connected with spectacle frame 125 and is away from the end of spectacle frame 125 from spectacle frame main body 1261 through hinge. The hinged connecting piece 122 is easy to understand, where the temple body 1261 corresponds to the above-mentioned pressure bar, and the spectacle frame 125 and the temple body 1261 together constitute the above-mentioned positioning piece 121 . The sounding mechanism 11 is further disposed on the connecting member 122 . Thus, the spectacle frame 12 and the sound-generating mechanism 11 jointly constitute bone conduction spectacle that has both the spectacle function and the earphone function.

Wherein, the spectacle frame 12 in this application scene may be a spectacle frame of various glasses such as myopia glasses, hyperopia glasses, sunglasses, 3D glasses, etc., and is not specifically limited.

Optionally, the connecting piece 122 is configured so that the sounding mechanism 11 can switch between a first relative fixed position and a second relatively fixed position relative to the temple main body 1261, and when the sounding mechanism 11 is in the first relatively fixed position, it can Fits to the back of the user's auricle. Specifically, the first relative fixed position of the sounding mechanism 11 relative to the temple body 1261 is shown in FIG. 16 , and the second relative fixed position of the sounding mechanism 11 relative to the temple body 1261 is shown in FIG. 17 . It should be pointed out that, in this application scenario, when the sounding mechanism 11 is in one of the relatively fixed positions relative to the temple body 1261, it is necessary to apply a preset force to the hinge to switch the sounding mechanism 11 to another relatively fixed position. , instead of automatically changing the relative fixed position of the sounding mechanism 11 due to the gravity of the sounding mechanism 11 itself, so that the user can accurately locate the position of the sounding mechanism 11 .

In a specific application scenario, the sound-generating mechanism 11 has only a first relative fixed position and a second relative fixed position relative to the temple body 1261 , without intermediate transitional states. For example, when the sound-generating mechanism 11 is in the second relatively fixed position as shown in FIG. 17 with respect to the temple main body 1261, the bone conduction glasses can be used as normal glasses. At this time, the user can manually apply a force greater than a preset size to the hinge. Pull the connecting piece 122, the connecting piece 122 and the sounding mechanism 11 are folded relative to the temple body 1261, so that the sounding mechanism 11 is in a second relative fixed position relative to the temple body 1261, so that the bonding surface 111 of the sounding mechanism 11 is attached The back of the user's auricle, so that the user can use the glasses function and earphone function of the bone conduction glasses at the same time, without other positions between the first relative fixed position and the second relative fixed position.

Of course, in other application scenarios, the sounding mechanism 11 can also have one or more relative fixed positions other than the above-mentioned first relative fixed position and second relative fixed position relative to the temple body 1261, so as to meet different uses of users. need.

Optionally, when the sounding mechanism 11 is in the first relative fixed position relative to the temple main body 1261, the clamp between the horizontal reference plane γ defined by the tops of the two temple main bodies 1261 and the symmetry plane β of the connecting piece 122 The angle is 65°～85°.

Wherein, the horizontal reference plane γ defined by the tops of the two temple main bodies 1261 refers to a plane that is simultaneously tangent to the tops of the two temple main bodies 1261, and in an application scenario, this plane is further perpendicular to the plane of the spectacle frame 125 The symmetry plane is specifically shown in FIG. 18 ; the symmetry plane β of the connector 122 is the same as that shown in FIG. 15 above, and will not be repeated here.

It is easy to understand that when the sounding mechanism 11 is in the first relative fixed position relative to the temple main body 1261, if the horizontal reference plane γ defined by the tops of the two temple main bodies 1261 and the symmetry plane β of the connecting piece 122 If the included angle is large, the sound-generating mechanism 11 will be closer to the outer side of the back of the auricle, and if it is too large, it will not even fit to the auricle; if the included angle is smaller, it will be too close to the inner side of the back of the auricle, and even compress the head. On the one hand, it will reduce the comfort of the user; on the other hand, it will affect the sound/vibration transmission of the bone conduction speaker through the ear cartilage, thereby reducing the sound quality of the sound-generating mechanism. And when the included angle is in the range of 65°-85°, the sound-generating mechanism can be attached to a relatively moderate position on the back of the user's auricle.

In addition, when the sound-generating mechanism 11 is in the first relative fixed position relative to the temple main body 1261, the included angle between the horizontal reference plane γ defined by the tops of the two temple main bodies 1261 and the symmetry plane β of the connecting piece 122 is equal to It can be 70°-82°, so that the bonding surface 111 of the sound-generating mechanism 11 is closer to the back area of the auricle facing the crus of the helix.

Specifically, when the sounding mechanism 11 is in the first relative fixed position relative to the temple main body 1261, the angle between the horizontal reference plane γ defined by the tops of the two temple main bodies 1261 and the symmetry plane β of the connecting piece 122 It can be any angle within the above range, such as 70°, 75°, 80°, 82°, etc., which are not specifically limited here.

Optionally, when the sounding mechanism 11 is in the first relative fixed position relative to the temple body 1261 , the included angle between the symmetry plane λ of the spectacle frame 125 and the symmetry plane β of the connecting member 122 is 5°˜30°.

Wherein, the symmetry plane λ of the spectacle frame 125 refers to a symmetrical plane that divides the spectacle frame 125 symmetrically, as shown in FIG. 19 . The symmetry plane β of the connecting member 122 is the same as that shown in FIG. 15 above, and will not be repeated here.

Wherein, the included angle between the symmetry plane λ of the spectacle frame 125 and the symmetry plane β of the connector 122 is related to the head shape of the user, for example, the angle corresponding to the European and American population is different from that of the Asian population. When the user wears it, on the one hand, the bottom surface of the temple main body 1261 is supported by the user's ears; Therefore, if the angle is large, the front part of the temple main body 1261 is against the head, and the rear part is away from the head; In both cases, the temple main body 1261 cannot be in good contact with the head, which will easily cause the fitting surface 111 of the sounding mechanism 11 to break away from the back of the auricle, thereby reducing the sound quality of the sounding mechanism 11 and causing inconvenience to the user.

Wherein, when the sounding mechanism 11 is in the first relative fixed position relative to the temple main body 1261, the included angle between the symmetry plane λ of the spectacle frame 125 and the symmetry plane β of the connecting piece 122 can also be 10°-25°, specifically It can also be 10°, 15°, 20°, 25°, etc., which are not limited here.

Optionally, please refer to FIG. 20 , the distance h ₁ between the center points of the hinge shafts 123 corresponding to the two temples 126 may be 90-150 mm. This distance h ₁ corresponds to the left-right width of the user's head.

It is easy to understand that the two spectacle legs 126 are placed on the upper part of the user's ears and clamped on _both sides of the head. The clamping force of the legs 126 towards the user's head is small, and the situation of "clamping is not tight" will occur, which will lead to easy loosening from the user's head, and then cause the sounding mechanism 11 to deviate from the position corresponding to the back of the auricle; If the closing angle is small, the temples 126 will clamp the user's head too much, which will easily bring discomfort to the user.

Wherein, the distance h ₁ between the center points of the hinge shafts 123 corresponding to the two temples 126 may also be 100-130mm, specifically 100mm, 110mm, 120mm, 130mm and so on. It should be pointed out that different users have different head shapes, and an earphone with a more suitable range of the distance h ₁ can be selected. For example, the distance h ₁ of men’s models can be 115-130mm, and the range of women’s models can be 100-115mm. Of course, it can also be set as the middle value of the two ranges to suit both groups of people.

Optionally, please continue to refer to FIG. 20 , the vertical distance h ₂ of the line connecting the symmetrical center point of the spectacle frame 125 to the center points of the rotating shafts 123 of the two hinges is 105-170 mm.

It should be pointed out that the center of symmetry of the spectacle frame 125 is the midpoint of the bridge of the nose located in the middle of the spectacle frame 125, and the vertical distance corresponds to the front and rear lengths of the user's head.

It is easy to understand that if the vertical distance _h2 is larger, then when the fitting surface 111 of the sound-generating mechanism 11 can be fitted to the back of the auricle, the spectacle frame 125 may be far away from the user's eyes, while the earphone spectacle frame 125 When worn properly, the bonding surface 111 of the sounding mechanism 11 cannot fit on the back of the auricle properly because it is far away from the back of the auricle; The frame 125 and the sounding mechanism 11 clamp the user's head too tightly at the front and rear at the same time, which brings discomfort to the user, or when the distance is too small, it is even difficult to use the two functions at the same time.

Wherein, the vertical distance _h2 between the symmetrical center point of the spectacle frame 125 and the center point of the two hinge shafts 123 can also be 130-150mm, specifically 130mm, 140mm, 150mm, etc. It should be pointed out that different user groups can correspond to different distance ranges. For example, the distance h ₂ of the male model can be 140-160mm, and the range of female models can be 105-135mm. Of course, it can also be set to two The middle value of the range to accommodate both populations.

Optionally, please refer to FIG. 20 and FIG. 21 together. The distance _h3 between the center point of the rotating shaft 123 of each hinge and the center point O of the fitting surface 111 of the corresponding sound-generating mechanism 11 is symmetrical to that of the spectacle frame 125 The ratio h ₃ /h ₂ of the vertical distance h ₂ of the line connecting the center point to the center points of the rotating shafts 123 of the two hinges is 0.1˜1.5.

Wherein, the distance _h3 between the center point of the rotating shaft 123 of each hinge and the center point O of the fitting surface 111 of the corresponding sounding mechanism 11 corresponds to the center point of the rotating shaft 123 of the hinge to the fitting surface 111 and the user's auricle. The distance of the fitting place on the back side; and the vertical distance _h2 of the line connecting the symmetrical center point of the spectacle frame 125 to the center points of the rotating shafts 123 of the two hinges corresponds to the vertical distance from the front of the user's head to the back of the ear. When the vertical distance from the front of the user's head to the back of the ear is constant, if the distance from the center point of the hinge's rotating shaft 123 to the fitting surface 111 and the back of the user's auricle is larger, that is, when the above ratio is larger , indicating that the distance between the center point of the rotating shaft 123 of the hinge and the center point O of the fitting surface 111 of the corresponding sounding mechanism 11 is relatively large, the sounding mechanism 11 is easy to fit on the relatively lower part of the back of the auricle; When the above-mentioned ratio is small, it means that the distance between the center point of the rotating shaft 123 of the hinge and the center point O of the fitting surface 111 of the corresponding sounding mechanism 11 is small, and the sounding mechanism 11 is easy to fit on the upper side of the back of the auricle. Therefore, it will affect the sound/vibration transmission efficiency of the sound generating mechanism 11, thereby affecting the sound quality.

Wherein, h ₃ /h ₂ can also be 0.125-0.35, specifically, such as 0.125, 0.15, 0.20, 0.25, 0.30, 0.35, etc., and different ratios can be designed according to different needs of users, and are not limited here.

Furthermore, bone conduction sound generating devices of different specifications can also be set according to the above-mentioned parameters, so that users can choose according to their own head shape to meet the user's needs.

The above is only the embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process transformation made by using the utility model specification and accompanying drawings, or directly or indirectly used in other Related technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (15)

1. A bone conduction sounding device, characterized in that, the bone conduction sounding device comprises: voice agency; A fixing mechanism, the fixing mechanism acts on the sounding mechanism, so that at least when the sounding mechanism is in use, the sounding mechanism is attached to the back of the user's auricle. 2. The bone conduction sounding device according to claim 1, wherein the sounding mechanism comprises: A fitting surface, the fitting surface is at least partly a curved surface, and is used to fit on the back of the user's auricle when the bone conduction sound generating device is in use. 3. The bone conduction sound-generating device according to claim 2, the fitting surface comprises a convex arc surface with a curvature not greater than 1; The area of the bonding surface is not less than 0.5 cm ² or not less than 1 cm ² . 4. The bone conduction sound generating device according to claim 1, characterized in that, The fixing mechanism acts on the sounding mechanism, so that the sounding mechanism fits on a predetermined area on the back of the user's auricle, and the predetermined area is centered on the back of the auricle facing the crus of the helix, with an area of 20 cm ² , 10cm ² , or 5cm ² areas. 5. The bone conduction sound generating device according to any one of claims 1 to 4, wherein the fixing mechanism comprises: a locator for positioning on the user's ear or head; A connecting piece, the connecting piece is an elastic structure, connected with the positioning piece and the sounding mechanism respectively, and when the positioning piece is positioned on the user’s ear or head, and at least when the bone conduction sounding device is in use In the normal state, elastic force is applied to the sound-generating mechanism under the support of the positioning member, so that it fits against the back of the user's auricle with a predetermined pressure. 6. The bone conduction sound generating device according to claim 5, characterized in that, The predetermined pressure is 0.1N˜1N, or 0.3N˜0.8N. 7. The bone conduction sound generating device according to claim 5, characterized in that, The positioning part is a fixing mechanism for hanging behind the head, one end of the connecting piece is connected to the fixing mechanism for hanging behind the head directly or through a hinge, and the other end is connected to the sounding mechanism; or The connecting piece is a part of the earwear, or the positioning piece and the connecting piece are integrally formed to form the earwear. 8. The bone conduction sound generating device according to claim 7, characterized in that, The earwear is a ring-shaped piece that matches the peripheral shape of the ear, and includes a front part of the earwear located in front of the ear and a rear part of the earwear located behind the ear. The front part of the earrings. 9. The bone conduction sound generating device according to claim 7, characterized in that, The fixing mechanism of the head hanging behind the head includes the front part of the head hanging which is connected to each other and is placed in front of the ears, and the rear part of the head hanging which is looped behind the head. The bottom of the head hanging rear, and the other end is connected to the sound-generating mechanism. 10. The bone conduction sound generating device according to claim 9, characterized in that: The elastic bracket of the earphone is concave arc-shaped, and the concave part faces the front part of the head hanging. 11. The bone conduction sound generating device according to claim 5, characterized in that, The positioning part includes a pressing bar pressed above the ear, the lower end of the connecting part is connected to the sound-generating mechanism, and the upper end of the connecting part is arranged at the end of the pressing bar facing the back of the ear through a hinge connection. 12. The bone conduction sound generating device according to claim 11, characterized in that: The vertical plane of the rotating shaft of the hinge, the symmetry plane of the connecting member and the center point of the fitting surface of the sounding mechanism fitting the ear are in the same plane, or within a predetermined error range relative to the plane. 13. The bone conduction sound generating device according to claim 11, characterized in that, the connecting member is made of rubber or a composite structure of rubber and elastic metal wire. 14. The bone conduction sound generating device according to claim 1, characterized in that, The fixing mechanism is an ear-mounted or a head-mounted fixing mechanism. 15. The bone conduction sound generating device according to claim 1, characterized in that, The sound generating mechanism includes a bone conduction speaker, and the bone conduction speaker includes at least one of an electromagnetic speaker, a piezoelectric speaker, and an electrostatic speaker.