Bone conduction sound device

Abstract

A bone conduction sound-generating device comprises a controller, a sound-generating structure and a functional structure; the sound-generating structure is connected to the controller and the functional structure respectively; the sound-generating structure comprises an external structure (10) having a vibration space inside, and at least one transducer unit accommodated in the vibration space and capable of vibrating; the transducer unit comprises a vibration element (20) and at least one driving element (30); the vibration element (20) comprises a first vibration member (202) and a second vibration member (203), and the first vibration member (202) and the second vibration member (203) are respectively located on both sides of an elastic element (201) and are both connected to the elastic element (201), and the two ends of the elastic element (201) are respectively connected to two opposite inner side walls of the vibration space; the driving element (30) is arranged close to at least one of the first vibration member (202) and the second vibration member (203). The bone conduction sound-generating device solves the technical problem that the external packaging structure of the sound-generating structure has a large volume, which results in a large volume of the final bone conduction sound-generating device, and the bone conduction sound-generating device cannot be applied to a smaller space field.

Description

Technical Field

[0001] The present application relates to the field of bone conduction technology, and in particular to a bone conduction sound generating device. Background Art

[0002] The essence of sound waves is vibration, so all sources that can be perceived as sound by humans or other organisms are mechanical vibrations. Bone conduction sound generally refers to the technology of transmitting sound signals directly to the auditory system of humans or other organisms through biological tissues such as skin tissue, muscle tissue, teeth, and bones by vibration, without transmitting sound waves through the air, so that the auditory system can receive vibration signals and perceive them as sound. The bone conduction sound device includes an independently packaged controller, a sound structure and a functional structure, and the sound structure is connected to the controller and the functional structure respectively. Driven by the controller, the sound structure generates a vibration signal, and transmits the vibration signal to the skin tissue, muscle tissue, teeth, bones and other biological tissues of the object to be transmitted through the functional structure, and directly transmits it to its auditory system.

[0003] At present, bone conduction sound-generating devices are usually worn behind the ears when in use, so as to transmit vibrations to the skin tissue, muscle tissue, bones and finally the auditory system. An elastic element is provided on the vibration element in the sound-generating structure, and the elastic element is arranged on the side of the vibration element away from the driving element, and the two ends of the elastic element are connected to the packaging structure. The vibration signal is generated by the interaction of the magnetic field between the vibration element and the driving element in the sound-generating structure, and is transmitted to the external packaging structure through the elastic element and the driving element, and further transmitted to the human body.

[0004] However, since the vibration element occupies a large space in its external packaging structure, the volume of the external packaging structure is large, which ultimately leads to a large volume of the bone conduction sound device, and thus the bone conduction sound device cannot be applied to a smaller space area. Summary of the invention

[0005] The present application provides a bone conduction sound-generating device, which solves the technical problem that the vibration element occupies a large space in its external packaging structure, resulting in a large volume of the external packaging structure, which ultimately leads to a large volume of the bone conduction sound-generating device, and thus the bone conduction sound-generating device cannot be used in a smaller space area.

[0006] The embodiment of the present application provides a bone conduction sound-generating device, including: a controller, a sound-generating structure, and a functional structure;

[0007] The sound-generating structure is connected to the controller and the functional structure respectively;

[0008] The sound-generating structure comprises: an outer structure having a vibration space inside, and at least one transducer unit accommodated in the vibration space and capable of vibrating;

[0009] The transducer unit includes a vibration element and at least one driving element, the vibration element at least has an elastic element, the elastic element is laterally arranged in the vibration space, and two ends of the elastic element are respectively connected to two opposite inner side walls of the vibration space, and the driving element is fixedly arranged near the vibration element in the vibration space;

[0010] The vibration element includes a first vibration member and a second vibration member, and the first vibration member and the second vibration member are respectively located on both sides of the elastic element and are both connected to the elastic element;

[0011] The driving element is disposed adjacent to at least one of the first vibrating member and the second vibrating member.

[0012] In this way, by setting the vibration element as the first vibration element and the second vibration element, and the first vibration element and the second vibration element are respectively located on both sides of the elastic element and are both connected to the elastic element, the driving element is arranged close to at least one of the first vibration element and the second vibration element. Since the elastic element is located between the first vibration element and the second vibration element, the volume occupied is smaller than that of the elastic element being arranged on the side of the vibration element away from the driving element. Therefore, by changing the setting position of the elastic element, the volume occupied by the sound-emitting structure can be reduced, thereby reducing the packaging volume of the sound-emitting structure, so that the overall volume of the bone conduction sound-emitting device is reduced, and the application scenarios of the bone conduction sound-emitting device are expanded, so that the bone conduction sound-emitting device can be used in smaller space areas, such as dentures.

[0013] In a possible implementation manner, the driving element is fixed to an inner top wall and / or an inner bottom wall of the vibration space.

[0014] In a possible implementation, there is one driving element, and the driving element is a coil, and the first vibrator and the second vibrator are both coils;

[0015] Alternatively, the first vibrating member and the second vibrating member are both magnets;

[0016] Alternatively, one of the first vibrating member and the second vibrating member is a coil, and the other of the first vibrating member and the second vibrating member is a magnet;

[0017] Alternatively, one of the first vibrating member and the second vibrating member is a coil, and the other of the first vibrating member and the second vibrating member is a non-magnetic ferromagnetic solid;

[0018] Alternatively, the first vibrating member and the second vibrating member are both ferromagnetic solids without magnetism.

[0019] In a possible implementation, there is one driving element, and the driving element is a magnet or a non-magnetic ferromagnetic solid, and the first vibrating element and the second vibrating element are both coils.

[0020] In a possible implementation, there are two driving elements, which are respectively a first driving element and a second driving element. The first driving element is located on a side of the first vibrating member away from the elastic element, and the second driving element is located on a side of the second vibrating member away from the elastic element.

[0021] In a possible implementation, the first driving element and the second driving element are both coils, and the first vibrating element and the second vibrating element are both coils;

[0022] Alternatively, the first vibrating member and the second vibrating member are both magnets;

[0023] Alternatively, one of the first vibrating member and the second vibrating member is a coil, and the other of the first vibrating member and the second vibrating member is a magnet;

[0024] Alternatively, one of the first vibrating member and the second vibrating member is a coil, and the other of the first vibrating member and the second vibrating member is a non-magnetic ferromagnetic solid;

[0025] Alternatively, the first vibrating member and the second vibrating member are both ferromagnetic solids without magnetism.

[0026] In a possible implementation, the first driving element and the second driving element are both magnets, and the first vibrating member and the second vibrating member are both coils.

[0027] In a possible implementation, one of the first driving element and the second driving element is a coil, the other of the first driving element and the second driving element is a magnet or a non-magnetic ferromagnetic solid, and the first vibrator and the second vibrator are both coils.

[0028] In a possible implementation, when at least one driving element is a coil, the coil has a first space for the first vibrator or the second vibrator to vibrate.

[0029] Alternatively, when at least one driving element is a magnet or a non-magnetic ferromagnetic solid, the first vibrating member and / or the second vibrating member has a second space into which the magnet or the ferromagnetic solid can extend.

[0030] In a possible implementation manner, the elastic element is a flat elastic piece.

[0031] In a possible implementation, the elastic element is a rubber sheet, a sound membrane or a planar spring.

[0032] In a possible implementation, there are multiple transducer units, and the frequency response ranges of the multiple transducer units are different;

[0033] Alternatively, each transducer unit comprises at least one different frequency response range.

[0034] In one possible implementation, the sound-generating structure, the controller, and the functional structure are packaged to form an integrated bone conduction sound-generating device.

[0035] A bone conduction sound-generating device provided in an embodiment of the present application includes a controller, a sound-generating structure and a functional structure; the sound-generating structure is connected to the controller and is used to generate a vibration signal under the drive of the controller; the functional structure is connected to the sound-generating structure. The sound-generating structure includes: an external structure having a vibration space inside, and at least one transducer unit accommodated in the vibration space and capable of vibrating; the external structure is used to encapsulate the transducer unit, and the electrical signal sent by the controller is converted into a vibration signal by the transducer unit, and the vibration signal is transmitted to the external structure, transmitted to the functional structure through the external structure, and finally transmitted to the user's auditory system through the functional structure. The transducer unit includes a vibration element and at least one driving element, the vibration element has at least an elastic element, the elastic element is arranged horizontally in the vibration space, and the two ends of the elastic element are respectively connected to the two opposite inner walls of the vibration space, and the driving element is fixedly arranged close to the vibration element in the vibration space. When the electrical signal sent by the controller changes, the magnetic field between the driving element and the vibration element changes, the direction and magnitude of the force between the electrical element and the vibration element change, the direction and magnitude of the vibration generated by the vibration element change accordingly, and the vibration is transmitted to the external structure connected to it through the elastic element in the vibration element. The vibration element includes a first vibration member and a second vibration member, and the first vibration member and the second vibration member are respectively located on both sides of the elastic element and are both connected to the elastic element; the driving element is arranged close to at least one of the first vibration member and the second vibration member. The present application changes the position of the elastic element and arranges the elastic element in a position close to the middle of the vibration space. The volume occupied by the sound-generating structure is reduced, thereby reducing the packaging volume of the sound-generating structure, so that the overall volume of the bone conduction sound-generating device is reduced, and the application scenarios of the bone conduction sound-generating device are expanded, so that the bone conduction sound-generating device can be used in smaller space fields, such as dentures. In addition, the volume of the bone conduction sound-generating device can be reduced, and then the weight of its packaging shell can be reduced to reduce the sense of oppression of the bone conduction sound-generating device on the user and improve the user experience. Therefore, the bone conduction sound device provided in this embodiment solves the technical problem that the vibration element occupies a large space in its external packaging structure, which makes the volume of the external packaging structure large, and ultimately leads to a large volume of the bone conduction sound device, making it impossible to apply the bone conduction sound device to a smaller space area. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic structural diagram of a sound-generating structure when there is only one driving element provided in an embodiment of the present application;

[0037] Figure 2 is another structural schematic diagram of the sound-generating structure when there is only one driving element provided in an embodiment of the present application;

[0038] Figure 3 is a schematic diagram of the structure of the sound-generating structure when there are two driving elements provided in an embodiment of the present application;

[0039] Figure 4 is another structural schematic diagram of the sound-generating structure when there are two driving elements provided in an embodiment of the present application;

[0040] Figure 5 It is a structural schematic diagram of a sound-generating structure provided in an embodiment of the present application;

[0041] Figure 6 The embodiment of this application provides Figure 5 Schematic diagram of the structure of the vibrating element at maximum amplitude;

[0042] Figure 7 It is a schematic diagram of a structure in which the elastic element is located on the side of the vibration element away from the driving element;

[0043] Figure 8 yes Figure 7 Schematic diagram of the structure of the vibrating element at maximum amplitude;

[0044] Fig. 9 is another structural schematic diagram of the sound-generating structure provided in an embodiment of the present application;

[0045] Fig.10 It is another structural schematic diagram in which the elastic element is located on the side of the vibration element away from the driving element.

[0046] Description of reference numerals:

[0047] 10: External structure;

[0048] 20: Vibration element;

[0049] 30: driving element;

[0050] 40: First space;

[0051] 50: Second space;

[0052] 201: elastic element;

[0053] 202: a first vibrating member;

[0054] 203: second vibrating member;

[0055] 301: first driving element;

[0056] 302: Second driving element. DETAILED DESCRIPTION

[0057] The terms used in the implementation section of this application are only used to explain the specific embodiments of this application and are not intended to limit this application.

[0058] Bone conduction is the use of carriers such as the human skull, inner ear lymph, and auditory nerve to transmit sound waves so that people can hear sounds. Compared with other sound transmission methods, the advantage of bone conduction is that you can hear the sound clearly even in a noisy environment, and the diffused sound will not affect other people around. Bone conduction uses bone vibration to transmit sound, and transmits the sound directly through the skull to the auditory nerve inside the ear, without passing through the external auditory canal and eardrum, and will not damage the eardrum and ossicular chain, so the user's hearing will not be affected.

[0059] At present, bone conduction sound-generating devices are usually worn behind the ears or other places with small spaces when in use, so as to transmit vibrations to the skin tissue, muscle tissue, bones and finally the auditory system. An elastic element is provided on the vibration element in the sound-generating structure, and the elastic element is arranged on the side of the vibration element away from the driving element, and both ends of the elastic element are connected to the packaging structure. The vibration signal is generated by the interaction of the magnetic field between the vibration element and the driving element in the sound-generating structure, and is transmitted to the external packaging structure through the elastic element and the driving element, and further transmitted to the human body.

[0060] However, since the elastic element is arranged on the side of the vibration element away from the driving element, the lateral area of ​​the elastic element itself is large and will occupy a larger packaging space. When the sound-generating structure occupies a larger volume, the external packaging structure will be larger, which will eventually lead to a larger volume of the bone conduction sound-generating device. When the volume of the bone conduction sound-generating device is large, the application scenarios of the bone conduction sound-generating device are limited, and the bone conduction sound-generating device cannot be applied to a smaller space. Therefore, in order to expand the application of bone conduction sound-generating devices in smaller space fields, it is very important to reduce the volume of the bone conduction sound-generating device.

[0061] Based on the above problems, the embodiment of the present application provides a bone conduction sound-generating device, by setting the vibration element as a first vibration element and a second vibration element, and the first vibration element and the second vibration element are respectively located on both sides of the elastic element and are both connected to the elastic element, and the driving element is arranged close to at least one of the first vibration element and the second vibration element. Since the elastic element is located between the first vibration element and the second vibration element, the volume occupied is smaller than that of the elastic element being arranged on the side of the vibration element away from the driving element. Therefore, by changing the setting position of the elastic element, the volume occupied by the sound-generating structure is reduced, thereby reducing the packaging volume of the sound-generating structure, so that the overall volume of the bone conduction sound-generating device is reduced, and the application scenarios of the bone conduction sound-generating device are expanded, so that the bone conduction sound-generating device can be applied in smaller space areas, such as dentures.

[0062] like Figure 1-Figure 4As shown, this embodiment provides a bone conduction sound-generating device, including: a controller, a sound-generating structure and a functional structure, wherein the sound-generating structure is connected to the controller and the functional structure respectively. The sound-generating structure is connected to the controller and is used to generate a vibration signal under the drive of the controller; the functional structure is connected to the sound-generating structure and is used to directly transmit the sound to the user's auditory system when it touches the user's skin tissue, muscle tissue, teeth, bones and other biological tissues.

[0063] Optionally, the sound-generating structure and the controller are both independent units, and the two components can be connected by wires so that the controller can transmit the control signal to the sound-generating structure in the form of an electrical signal. Of course, the sound-generating structure and the controller can also be directly connected by a mechanical structure such as plug-in or card-connection. Alternatively, the connection can be achieved by a wireless connection such as Bluetooth.

[0064] In this embodiment, the sound-emitting structure includes: an external structure 10 having a vibration space inside, and at least one transducer unit housed in the vibration space and capable of vibrating; the external structure 10 is used to encapsulate the transducer unit, and the electrical signal sent by the controller is converted into a vibration signal by the transducer unit, the vibration signal is transmitted to the external structure 10, transmitted to the functional structure through the external structure 10, and finally transmitted to the user's auditory system through the functional structure.

[0065] Furthermore, the transducer unit includes a vibration element 20 and at least one driving element 30. The vibration element 20 has at least an elastic element 201. The elastic element 201 is arranged horizontally in the vibration space, and the two ends of the elastic element 201 are respectively connected to the two opposite inner walls of the vibration space. The driving element 30 is fixedly arranged in the vibration space near the vibration element 20. When the electrical signal sent by the controller changes, the magnetic field between the driving element 30 and the vibration element 20 changes, the direction and magnitude of the force between the driving element 30 and the vibration element 20 change, and the direction and magnitude of the vibration generated by the vibration element 20 change accordingly, and the vibration is transmitted to the external structure 10 connected thereto through the elastic element 201 in the vibration element 20.

[0066] In this embodiment, the vibration element 20 includes a first vibration member 202 and a second vibration member 203, and the first vibration member 202 and the second vibration member 203 are respectively located on both sides of the elastic element 201 and are both connected to the elastic element 201; when the vibration element 20 vibrates, the first vibration member 202 and the second vibration member 203 generate an interaction force with the driving element 30, and under the action of the interaction force, the first vibration member 202 and the second vibration member 203 will vibrate together with the elastic element 201, and then transmit the vibration signal to the external structure 10 through the elastic element 201 and the driving element 30. In the embodiment of the present application, the elastic element 201 is arranged between the first vibration member 202 and the second vibration member 203, which occupies a smaller volume than the elastic element 201 is arranged on the side of the vibration element 20 away from the driving element 30. Therefore, by changing the position of the elastic element 201 in the vibration space, the volume occupied by the sound-generating structure is reduced, thereby reducing the packaging volume of the sound-generating structure, reducing the overall volume of the bone conduction sound-generating device, and expanding the application scenarios of the bone conduction sound-generating device, so that the bone conduction sound-generating device can be used in smaller space areas, such as dentures. In addition, in order to ensure a certain sound quality, the part where the bone conduction sound-generating device fits the user needs to be tightly fitted, which brings a certain sense of oppression to the user when using it. The larger the volume of the external packaging structure, the greater its weight, and the greater the sense of oppression that the bone conduction sound-generating device brings to the user. Therefore, it is also possible to reduce the volume of the bone conduction sound-generating device, and then reduce the weight of its packaging shell, so as to reduce the sense of oppression of the bone conduction sound-generating device on the user and improve the user experience.

[0067] In this embodiment, the driving element 30 is disposed close to at least one of the first vibrating member 202 and the second vibrating member 203. Exemplarily, there may be one driving element 30, and the driving element 30 may be disposed close to one of the first vibrating member 202 and the second vibrating member 203, and the driving element 30 and the vibration element 20 form a transducer unit. Of course, there may also be two driving elements 30, and the two driving elements 30 are respectively located on both sides of the vibration element 20, and are respectively disposed close to the first vibrating member 202 and the second vibrating member 203, that is, one driving element 30 is disposed close to the first vibrating member 202, and the other driving element 30 is disposed close to the second vibrating member 203. At this time, one or more driving elements 30 may form one or more transducer units with different frequency response ranges with one or more vibration elements 20.

[0068] In this embodiment, the internal contour of the external structure 10 is the space required for installing the necessary structures of the driving element 30 and the vibration element 20 plus the minimum envelope of the necessary assembly gap and amplitude space between the driving element 30 and the vibration element 20. That is, the volume occupied by the transducer unit should be as small as possible while meeting the functional requirements. This allows the bone conduction sound device to be used in a smaller space and reduce the sense of oppression caused to the user, thereby improving the user experience.

[0069] The bone conduction sound-generating device provided in this embodiment includes a controller, a sound-generating structure and a functional structure; the sound-generating structure is connected to the controller and is used to generate a vibration signal under the drive of the controller; the functional structure is connected to the sound-generating structure. The sound-generating structure includes: an external structure 10 having a vibration space inside, and at least one transducer unit accommodated in the vibration space and capable of vibrating; the external structure 10 is used to encapsulate the transducer unit, and the electrical signal sent by the controller is converted into a vibration signal by the transducer unit, and the vibration signal is transmitted to the external structure 10, transmitted to the functional structure through the external structure 10, and finally transmitted to the user's auditory system through the functional structure. The transducer unit includes a vibration element 20 and at least one driving element 30, the vibration element 20 has at least an elastic element 201, the elastic element 201 is arranged horizontally in the vibration space, and the two ends of the elastic element 201 are respectively connected to the two opposite inner walls of the vibration space, and the driving element 30 is fixedly arranged close to the vibration element 20 in the vibration space. When the electrical signal sent by the controller changes, the magnetic field between the driving element 30 and the vibration element 20 changes, the direction and magnitude of the force between the electrical element and the vibration element 20 change, and the direction and magnitude of the vibration generated by the vibration element 20 change accordingly, and the vibration is transmitted to the external structure 10 connected thereto through the elastic element 201 and the driving element 30 in the vibration element 20. The vibration element 20 includes a first vibration member 202 and a second vibration member 203, and the first vibration member 202 and the second vibration member 203 are respectively located on both sides of the elastic element 201 and are both connected to the elastic element 201; the driving element 30 is arranged close to at least one of the first vibration member 202 and the second vibration member 203. The present application changes the position of the elastic element 201 and arranges the elastic element 201 between the first vibration member 202 and the second vibration member 203. The volume occupied by the sound-generating structure is reduced, thereby reducing the packaging volume of the sound-generating structure, so that the overall volume of the bone conduction sound-generating device is reduced, and the application scenarios of the bone conduction sound-generating device are expanded, so that the bone conduction sound-generating device can be applied in a smaller space field, such as dentures. In addition, the volume of the bone conduction sound device can be reduced, and the weight of its packaging shell can be reduced to reduce the sense of oppression of the bone conduction sound device on the user and improve the user experience. Therefore, the bone conduction sound device provided in this embodiment solves the technical problem that the vibration element 20 occupies a large space in its external packaging structure, resulting in a large volume of the external packaging structure, which ultimately leads to a large volume of the bone conduction sound device, and thus the bone conduction sound device cannot be applied to a smaller space field.

[0070] In order to verify that the volume occupied by disposing the elastic element 201 between the first vibrating element 202 and the second vibrating element 203 is smaller than that of disposing the elastic element 201 on the side of the vibrating element 20 away from the driving element 30, this embodiment will be combined with Figure 5-Figure 10Comparative volume calculation and description are performed. In the comparative calculation, the dimensions and performance parameters of all individual components of the same device in each calculation example are the same. The cylindrical volume occupied by the elastic element 201 remains unchanged and is not involved in the comparative calculation. The calculated volume is the ideal volume.

[0071] According to the actual working conditions: the thickness of the elastic element 201 << the thickness and amplitude of each component << the radius of each component; assuming that the thickness of the vibration element 20 is 2h (the thickness of the first vibration element 202 and the second vibration element 203 is h), the thickness and amplitude of the driving element 30 are both h, h>0; the height of the upper cone, that is, the height of the space above the elastic element 201, is The height of the lower cone, i.e. the height of the space below the elastic element 201, is ; Radius of elastic element 201 , the radius of the driving element 30 is , vibration element 20 radius ,and or .

[0072] in Figure 5 In this embodiment, the elastic element 201 is disposed between the first vibrating element 202 and the second vibrating element 203. ; Figure 6 for Figure 5 A working diagram of the vibration element 20 at the maximum amplitude;

[0073] in Figure 7 For Figure 5 The corresponding elastic element 201 is arranged on the side of the vibration element 20 away from the driving element 30. , Figure 8 for Figure 7 A working diagram of the vibration element 20 at the maximum amplitude;

[0074] Figure 5 Ideal volume of upper frustum: ,in

[0075] Figure 5 Ideal volume of lower frustum: ,in

[0076] Figure 7 Ideal volume of upper frustum: ,in

[0077] Figure 7 Ideal volume of lower frustum: ,in

[0078] use Figure 5 The ideal total volume of the two frustums, minus Figure 7 The ideal total volume of the two frustums is:

[0079]

[0080]

[0081]

[0082] because

[0083] so

[0084] and ,

[0085] so 0

[0086] That is, through the above derivation, we can know that Figure 5 The ideal total volume of the two frustums is less than the corresponding Figure 7 Ideal total volume of the two frustums.

[0087] And when Figure 5 and Figure 7 When the transducer unit is at the maximum amplitude, that is, Figure 6 and Figure 8 As shown: Figure 6 The upper surface of the middle vibration element 20 (i.e., the first vibration element 202) will be in close contact with the upper surface of the upper cone, and the edge deformation of the elastic element 201 is still within the ideal envelope, so the actual volume is the ideal volume. Figure 8 The middle part of the middle elastic element 201 will be close to the upper surface of the cone, the radius of the elastic element 201 is the largest, and the edge of the elastic element 201 is deformed and protrudes from the ideal envelope. In addition to the calculated ideal volume, the part of the elastic element 201 protruding from the ideal volume is also required. Figure 8 The actual volume required, so Figure 8 The actual volume of will be greater than its ideal volume. It can be further deduced that Figure 5 The actual volume is less than Figure 7 actual volume.

[0088] Optional, Fig. 9 Another implementation method is to arrange the elastic element 201 between the first vibrating element 202 and the second vibrating element 203. ;in Fig.10 For Fig. 9 Another implementation method in which the corresponding elastic element 201 is arranged on the side of the vibration element 20 away from the driving element 30 is .

[0089] Fig. 9 Ideal volume of upper frustum: ,in

[0090] Fig. 9 Ideal volume of lower frustum: ,in

[0091] Fig.10 Ideal volume of upper frustum: / 3, where

[0092] Fig.10 Ideal volume of lower frustum: ,in

[0093] use Fig. 9 The ideal total volume of the two frustums, minus Fig.10 Ideal total volume of two frustums

[0094]

[0095] Right now Fig. 9 The ideal total volume of the two frustums is equal to Fig.10 The ideal total volume of the two frustums. Fig. 9 and Fig.10 At maximum amplitude, Fig. 9 The upper surface of the middle vibration element 20 (ie, the first vibration element 202 ) will be in close contact with the upper surface of the upper frustum, and the edge deformation of the elastic element 201 is still within the ideal envelope, so the actual volume is the ideal volume. Fig.10 The middle part of the middle elastic element 201 will be close to the upper surface of the upper cone, and the edge of the elastic element 201 will be deformed and protrude beyond the ideal envelope, so the actual volume will be greater than the ideal volume. Fig. 9 The actual volume is less than Fig.10 actual volume.

[0096] In summary, it can be deduced that the elastic element 201 disposed between the first vibrating member 202 and the second vibrating member 203 occupies a smaller volume than the elastic element 201 disposed on the side of the vibrating member 20 away from the driving member 30. Since the implementation of the above-mentioned transducer unit includes one driving member 30 as the most basic implementation, when there are multiple driving members 30, the above-mentioned calculation and derivation process is still applicable, and therefore, it will not be repeated here.

[0097] Further, the driving element 30 can be fixed on the inner top wall and / or the inner bottom wall of the vibration space. Exemplarily, the driving element 30 can be one, and the driving element 30 can be fixed on the inner top wall or the inner bottom wall of the vibration space. Of course, there can also be two driving elements 30, and the driving elements 30 can be fixed on the inner top wall and the inner bottom wall of the vibration space, that is, one of the driving elements 30 is fixed on the inner top wall of the vibration space, and the other driving element 30 is fixed on the inner bottom wall of the vibration space. Alternatively, both driving elements 30 are fixed on the inner top wall or the inner bottom wall of the vibration space, that is, the two driving elements 30 are fixed on the inner top wall of the vibration space at the same time, or the two driving elements 30 are fixed on the inner bottom wall of the vibration space at the same time.

[0098] The transducer unit in this embodiment can be implemented in a variety of ways, which are described in detail as follows:

[0099] Please refer to Figure 1 , is a realization method of the transducer unit in this embodiment, the driving element 30 can be one, and the driving element 30 is a coil, and the first vibrator 202 and the second vibrator 203 are magnets. The function of the transducer unit is to convert electrical energy into a magnetic field through the coil. The energized coil generates a magnetic field, which acts magnetically with the magnet. Therefore, a magnetic force acts between the driving element 30 and the first vibrator 202 and the second vibrator 203, so that the first vibrator 202 and the second vibrator 203 generate a vibration signal, which is transmitted to the external structure 10 through the elastic element 201 and the driving element 30, and further transmitted to the human body. The strength of the magnetic field is adjusted by the electrical signal sent by the controller, so that the vibration signal also changes accordingly, thereby realizing the conversion of the electrical signal sent by the controller into a vibration signal carrying sound, that is, realizing vibration sounding.

[0100] Optionally, there may be only one driving element 30, and the driving element 30 is a coil, and the first vibrator 202 and the second vibrator 203 are both coils. The driving element 30 that is energized generates a magnetic field, and the first vibrator 202 and the second vibrator 203 are also energized to generate a magnetic field. The two magnetic fields interact with each other, thereby achieving vibration sound generation. The working principle is as follows: Figure 1 The implementation method of the transducer unit has been explained and will not be repeated here.

[0101] Optionally, there may be only one driving element 30, and the driving element 30 is a coil, one of the first vibrating element 202 and the second vibrating element 203 is a coil, and the other of the first vibrating element 202 and the second vibrating element 203 is a magnet. The working principle has been explained in the above implementation, and will not be repeated here.

[0102] Optionally, there can be one driving element 30, and the driving element 30 is a coil, one of the first vibrating member 202 and the second vibrating member 203 is a coil, and the other of the first vibrating member 202 and the second vibrating member 203 is a non-magnetic ferromagnetic solid. The ferromagnetic solid is a material that is originally non-magnetic, and can be magnetized under the action of a magnetic field to become magnetic. The reason why ferromagnetic solids can be magnetized is that ferromagnetic solids are composed of many small magnetic areas called magnetic domains, each of which is equivalent to a small magnet. When there is no external magnetic field, the magnetic domains are arranged in a disorderly manner, the magnetism cancels each other out, and the magnetism is not apparent to the outside. However, under the action of an external magnetic field, the magnetic domains will be oriented and arranged along the direction of the magnetic field to form an additional magnetic field, thereby significantly enhancing the magnetic field. The coil in the vibration element 20 generates a magnetic field when energized, magnetizing the ferromagnetic solid connected to it through the elastic element 201, and the magnetic field of the vibration element 20 is significantly enhanced. In addition, the coil of the driving element 30 also generates a magnetic field when energized, and the vibration element 20 and the driving element 30 generate an interaction between the magnetic fields. Therefore, a magnetic force occurs between the driving element 30 and the vibration element 20, causing the vibration element 20 to apply pressure to the external structure 10 through the elastic element 201 to achieve vibration and sound.

[0103] Optionally, there can be only one driving element 30, and the driving element 30 is a coil, the first vibrating member 202 and the second vibrating member 203 are both non-magnetic ferromagnetic solids, and the driving element 30 coil generates a magnetic field when energized, and at the same time magnetizes the two ferromagnetic solids in the vibration element 20, so that the magnetism of the vibration element 20 is significantly enhanced, and the vibration element 20 and the driving element 30 generate an interaction between the magnetic fields. Therefore, a magnetic force occurs between the driving element 30 and the vibration element 20, causing the vibration element 20 to generate a vibration signal, which is transmitted to the external structure 10 through the elastic element 201 and the driving element 30, and further transmitted to the human body.

[0104] Please continue to refer to Figure 2 , which is another implementation of the transducer unit in this embodiment, there is one driving element 30, and the driving element 30 is a magnet, and the first vibrator 202 and the second vibrator 203 are both coils. The first vibrator 202 and the second vibrator 203 that are energized generate a magnetic field, which generates a magnetic force with the driving element 30 that is a magnet, thereby achieving vibration and sound generation. Its working principle has been explained in the above implementation, and will not be repeated here.

[0105] Optionally, there is only one driving element 30, and the driving element 30 is a non-magnetic ferromagnetic solid, and the first vibrator 202 and the second vibrator 203 are both coils. The first vibrator 202 and the second vibrator 203 that are energized generate a magnetic field, which magnetizes the ferromagnetic solid in the driving element 30, and the magnetic field of the driving element 30 is significantly increased. The vibration element 20 and the driving element 30 generate a magnetic force, thereby achieving vibration sound generation. The working principle has been explained in the above implementation method and will not be repeated here.

[0106] In some implementations of the transducer unit, the number of the driving elements 30 is two, and the two driving elements 30 are respectively a first driving element 301 and a second driving element 302. The first driving element 301 is located on the side of the first vibrating member 202 away from the elastic member 201, and the second driving element 302 is located on the side of the second vibrating member 203 away from the elastic member 201. The first driving element 301 and the second driving element 302 share a vibration element 20. The first driving element 301 and the vibration element 20 can form a transducer unit, and the second driving element 302 and the vibration element 20 can form another transducer unit. At this time, without increasing the internal vibration space, by adding a driving element 30, one transducer unit becomes two transducer units, which not only saves the manufacturing cost, but also reduces the packaging volume and the weight of the external packaging structure, so that the bone conduction sound device can be used in a smaller space and reduce the sense of oppression caused to the user, thereby improving the user experience.

[0107] It is understandable that each transducer unit includes at least one different frequency response range. Since each transducer unit includes at least one coil and a magnet or a coil or a ferromagnetic solid, the two transducer units in the same internal vibration space can have different frequency characteristics by changing the weight, size, material of the magnet, the gap between the magnet and the coil, the gap between the ferromagnetic solid and the coil, the material of the coil, the number of turns, the gap between the coils and other parameters. The two transducer units can work independently, that is, when one of the transducer units is working, the sound-emitting structure exhibits the frequency characteristics of the working transducer unit, and the sound-emitting structure can output the vibration signals generated by the two transducer units respectively. When the two transducer units work together, the vibration signal range output by the sound-emitting structure is the superposition of the vibration signal ranges generated by the two transducer units, which can improve the sound quality of the bone conduction sound-emitting device and widen the frequency domain of the audio.

[0108] Of course, the number of driving elements 30 can be other numbers, and multiple driving elements 30 can share one vibration element 20, thereby reducing the packaging volume of the sound-generating structure. Optionally, multiple driving elements 30 can also be set one by one to one vibration element 20 or every two driving elements 30 can share one vibration element 20.

[0109] Further, the first driving element 301 and the second driving element 302 are both coils, and the first vibrator 202 and the second vibrator 203 are both coils. The first driving element 301 generates a magnetic field when it is energized, and the first vibrator 202 and the second vibrator 203 also generate a magnetic field when it is energized, and a magnetic force occurs between the first driving element 301 and the vibrator 20, and the vibration signal transmitted by the sound-generating structure is related to the characteristics of the first driving element 301 and the vibrator 20. Alternatively, the second driving element 302 generates a magnetic field when it is energized, and the first vibrator 202 and the second vibrator 203 also generate a magnetic field when it is energized, and a magnetic force occurs between the second driving element 302 and the vibrator 20, and the vibration signal transmitted by the sound-generating structure is related to the characteristics of the second driving element 302 and the vibrator 20. Alternatively, the first driving element 301 and the second driving element 302 are both powered on to generate a magnetic field, the first vibrating member 202 and the second vibrating member 203 are also powered on to generate a magnetic field, and magnetic force occurs between the first driving element 301 and the second driving element 302 and the vibrating member 20, and the vibration signal transmitted by the sound-generating structure is related to the characteristics of the first driving element 301 and the second driving element 302 and the vibrating member 20. That is, by setting the coil parameters of the first driving element 301 and the second driving element 302 to be different, the two transducer units formed by them have different frequency response ranges.

[0110] In a possible implementation, since the first vibrator 202 and the second vibrator 203 are both coils, the first vibrator 202 and the second vibrator 203 can also be powered on separately to generate magnetic fields, and generate interaction forces with the first drive element 301 and the second drive element 302 separately. At this time, the first drive element 301 and the first vibrator 202, the first drive element 301 and the second vibrator 203, the second drive element 302 and the first vibrator 202, and the second drive element 302 and the second vibrator 203 can be combined to form four transducer units. That is, by setting the coil parameters of the first vibrator 202 and the second vibrator 203 to be different, the four additional transducer units have different frequency response ranges.

[0111] Optional, such as Figure 3As shown, the first driving element 301 and the second driving element 302 are both coils, and the first vibrator 202 and the second vibrator 203 are both magnets. After the first driving element 301 is energized to generate a magnetic field, a magnetic force occurs between the first driving element 301 and the vibrating element 20, and the vibration signal transmitted by the sound-generating structure is related to the characteristics of the first driving element 301 and the vibrating element 20. Alternatively, after the second driving element 302 is energized to generate a magnetic field, a magnetic force occurs between the second driving element 302 and the vibrating element 20, and the vibration signal transmitted by the sound-generating structure is related to the characteristics of the second driving element 302 and the vibrating element 20. Alternatively, after the first driving element 301 and the second driving element 302 are both energized to generate a magnetic field, a magnetic force occurs between the first driving element 301 and the second driving element 302 and the vibrating element 20, and the vibration signal transmitted by the sound-generating structure is related to the characteristics of the first driving element 301 and the second driving element 302 and the vibrating element 20. That is, by setting the coil parameters of the first driving element 301 and the second driving element 302 to be different, the two transducer units constituted by them have different frequency response ranges.

[0112] Optionally, the first driving element 301 and the second driving element 302 are both coils, one of the first vibrating element 202 and the second vibrating element 203 is a coil, and the other of the first vibrating element 202 and the second vibrating element 203 is a magnet. The working principle has been explained in the above implementation and will not be repeated here.

[0113] Optionally, the first driving element 301 and the second driving element 302 are both coils, one of the first vibrating member 202 and the second vibrating member 203 is a coil, and the other of the first vibrating member 202 and the second vibrating member 203 is a non-magnetic ferromagnetic solid. The working principle has been explained in the above implementation and will not be repeated here.

[0114] Optionally, the first driving element 301 and the second driving element 302 are both coils, and the first vibrating member 202 and the second vibrating member 203 are both non-magnetic ferromagnetic solids. The working principle has been explained in the above implementation, and will not be repeated here.

[0115] Please continue to refer to Figure 4 , is another implementation of the transducer unit in this embodiment, the first driving element 301 and the second driving element 302 are both magnets, and the first vibrating element 202 and the second vibrating element 203 are both coils. Its working principle has been explained in the above implementation, and will not be repeated here.

[0116] In some implementations of the transducer unit, one of the first drive element 301 and the second drive element 302 is a coil, the other of the first drive element 301 and the second drive element 302 is a magnet, and the first vibrator 202 and the second vibrator 203 are both coils; or, one of the first drive element 301 and the second drive element 302 is a coil, the other of the first drive element 301 and the second drive element 302 is a non-magnetic ferromagnetic solid, and the first vibrator 202 and the second vibrator 203 are both coils. The working principle has been explained in the above implementations and will not be repeated here.

[0117] In this embodiment, when at least one driving element 30 is a coil, the coil has a first space 40 for the first vibrator 202 or the second vibrator 203 to vibrate. When the driving element 30 interacts with the vibration element 20, the vibration element 20 moves back and forth in the vertical direction in the vibration space. When the vibration element 20 moves toward the driving element 30, the vibration element 20 can enter the first space 40. With this arrangement, the first space 40 can replace or partially replace the vibration space required when the vibration element 20 vibrates toward the driving element 30, thereby reducing the volume of the vibration space, thereby reducing the packaging volume and the weight of the external packaging structure, so that the bone conduction sound device can be used in a smaller space and reduce the sense of oppression caused to the user, thereby improving the user experience.

[0118] Alternatively, when at least one driving element 30 is a magnet or a non-magnetic ferromagnetic solid, the first vibrating member 202 and / or the second vibrating member 203 has a second space 50 into which the magnet or ferromagnetic solid can extend. When the driving element 30 interacts with the vibration element 20, the vibration element 20 will move back and forth in the vertical direction in the vibration space. When the vibration element 20 moves toward the driving element 30, the driving element 30 can enter the second space 50. With this arrangement, the second space 50 can replace or partially replace the vibration space required when the vibration element 20 vibrates toward the driving element 30, thereby reducing the volume of the vibration space, thereby reducing the packaging volume and the weight of the external packaging structure, so that the bone conduction sound device can be used in a smaller space and reduce the sense of oppression caused to the user, thereby improving the user experience.

[0119] Optionally, when at least one driving element 30 is a coil and the vibrator close to the driving element 30 which is a coil is also a coil, a first space 40 may be provided on the driving element 30 which is a coil or a second space 50 may be provided on the vibrator which is a coil.

[0120] In this embodiment, the elastic element 201 is a flat elastic member. The thickness of the flat elastic member is very small, which can reduce the volume it occupies, thereby reducing the packaging volume. Exemplarily, the elastic element 201 is a rubber sheet, a sound film or a flat spring.

[0121] Further, the elastic element 201 can be a regular shape such as a rectangle, a circle, an ellipse, a cross, a diamond, etc. Of course, the elastic element 201 can also be other irregular shapes. The shape of the elastic element 201 is not limited in this embodiment, as long as the elastic element 201 can ensure the generation of the vibration signal of the transducer unit. Exemplarily, the elastic element 201 can be a polygon with a small width at both ends and a large width in the middle, and the two ends of the elastic element 201 are respectively connected to the opposite side walls of the vibration space. Optionally, the shape of the elastic element 201 can be circular, and the edge of the elastic element 201 can be connected to the inner side wall of the vibration space. Such a setting can make the elastic element 201 contact the inner side wall of the vibration space more fully, and better transmit the vibration of the vibration element 20. Optionally, the elastic element 201 can also be set to a corresponding shape according to the different shapes of the cross-section of the inner side wall of the vibration space, so as to better make the elastic element 201 contact the inner side wall of the vibration space. Further, the elastic element 201 can be provided with a hollow pattern.

[0122] In this embodiment, there may be multiple transducer units, and the frequency response ranges of the multiple transducer units are all different. When there are at least two transducer units, the frequency response ranges corresponding to each transducer unit may be different, or some of the transducer units may be the same. In order to achieve better sound quality effects, according to the type of sound source played and the frequency response range corresponding to the transducer unit, the transducer unit matching the type of the sound source can be determined from all the transducer units in the sound-emitting structure, and the matching transducer units can be driven to generate vibration signals, so as to play a sound quality effect that is more in line with the type of the sound source for the user.

[0123] In this embodiment, the sound-generating structure, the controller and the functional structure are packaged to form an integrated bone conduction sound-generating device. The sound-generating structure can be packaged in the form of multiple transducer units integrated together, or it can be packaged by relying on the functional structure, that is, the sound-generating structure is embedded in the functional structure, or the functional structure wraps the sound-generating structure; the sound-generating structure can also be packaged in common with the controller, that is, the sound-generating structure and the controller are integrated together; the sound-generating structure can also be packaged as a whole with the controller and the functional structure. Through this integrated method, it is possible to reduce or even cancel the packaging shell of the sound-generating structure, reduce the volume and weight of the device, reduce the overall weight of the bone conduction sound-generating device to reduce the sense of pressure on the user's wearing part, and improve the user experience. Since multiple transducer units are integrated together, the sound quality can also be improved. At the same time, after the bone conduction sound-generating device is integrated, its volume is greatly reduced, and the bone conduction sound-generating device can be used in a smaller space.

[0124] In this embodiment, the functional structure may be a structure that touches the inside of the user's mouth or teeth, and after the controller drives the sound-generating structure to generate a vibration signal, the functional structure may transmit the vibration signal to the user's auditory system through the inside of the user's mouth or teeth. Compared with clipping the bone conduction sound-generating device behind the ear, etc., the functional structure transmits the vibration signal through the inside of the mouth or teeth, and there will be no inconvenience or pressure when wearing it. The user can place the functional structure in the bone conduction sound-generating device inside the mouth, and when it touches the internal tissue of the mouth, specifically, the user can hold the functional structure in his mouth, or bite the functional structure, or press the functional structure against one side of the mouth, such as the upper jaw or tongue or the left and right cheeks in the mouth, and then when the controller drives the sound-generating structure to generate a vibration signal, the functional structure can transmit the vibration signal to the auditory system in the form of bone conduction. Exemplarily, the functional structure can be dentures, dental braces, pacifiers, teething sticks, chopsticks, spoons, forks, stirring sticks, straws, pens, voice recorders, popsicle sticks, toothbrushes, lollipop sticks, electronic cigarettes, cigarette holders or other similar products, as well as accessories for the above products, etc., which can be independently arranged or assembled from several components.

[0125] In the bone conduction sound-generating device provided in the embodiment of the present application, a controller drives the sound-generating structure, and the magnetic fields of the driving element 30 and the vibration element 20 in the sound-generating structure interact with each other. The vibration element 20 applies pressure to the external structure 10 through the elastic element 201, and the external structure 10 is deformed under the action of pressure. The strength of the magnetic field is adjusted by the electric signal sent by the controller, so that the deformation also changes accordingly. The external structure 10 vibrates together with the vibration element 20, thereby realizing the conversion of the electric signal sent by the controller into a vibration signal carrying sound. The functional structure can transmit the vibration signal to the user's auditory system through the inside of the user's mouth or teeth. Compared with the bone conduction sound-generating device in the prior art, it can be used in a smaller space area, and there will be no inconvenience and pressure when wearing it. It also has technical effects such as simple structure, high integration, and improved sound quality to a certain extent.

[0126] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be a connection between two elements or an interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0127] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0128] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A bone conduction sound device, characterized in that: include: controllers, vocal structures, and functional structures; The sound-generating structure is connected to the controller and the functional structure respectively; The sound-generating structure comprises: an outer structure having a vibration space inside, and at least one transducer unit accommodated in the vibration space and capable of vibrating; The transducer unit comprises a vibration element and at least one driving element, wherein the vibration element has at least an elastic element, the elastic element is arranged transversely in the vibration space, and two ends of the elastic element are respectively connected to two opposite inner side walls of the vibration space; the shape of the elastic element corresponds to the shape of the cross section enclosed by the vibration space; the driving element is fixedly arranged near the vibration element in the vibration space; the projection area of ​​the vibration element along the vertical direction is located inside the projection area of ​​the elastic element along the vertical direction, and the vertical direction is a direction perpendicular to the cross section of the elastic element; The vibration element comprises a first vibration member and a second vibration member, and the first vibration member and the second vibration member are respectively located on both sides of the elastic element and are both in contact with and connected to the elastic element to reduce the occupied volume of the sound-generating structure; The driving element is disposed close to at least one of the first vibrating member and the second vibrating member; There are multiple transducer units, and the frequency response ranges of the multiple transducer units are different; The controller is used to determine a target transducer unit that matches the type of the sound source being played from the multiple transducer units, and drive the target transducer unit to generate a vibration signal.

2. The bone conduction sound generating device according to claim 1, characterized in that: The driving element is fixed to the inner top wall and / or the inner bottom wall of the vibration space.

3. The bone conduction sound generating device according to claim 1, characterized in that: There is one driving element, and the driving element is a coil, and the first vibrating element and the second vibrating element are both coils; Alternatively, both the first vibrating member and the second vibrating member are magnets; Alternatively, one of the first vibrating member and the second vibrating member is a coil, and the other of the first vibrating member and the second vibrating member is a magnet; Alternatively, one of the first vibrating member and the second vibrating member is a coil, and the other of the first vibrating member and the second vibrating member is a non-magnetic ferromagnetic solid; Alternatively, both the first vibrating member and the second vibrating member are non-magnetic ferromagnetic solids.

4. The bone conduction sound generating device according to claim 1, characterized in that: There is one driving element, and the driving element is a magnet or a non-magnetic ferromagnetic solid. The first vibrating element and the second vibrating element are both coils.

5. The bone conduction sound generating device according to claim 1, characterized in that: There are two driving elements, which are a first driving element and a second driving element. The first driving element is located on a side of the first vibrating member away from the elastic element, and the second driving element is located on a side of the second vibrating member away from the elastic element.

6. The bone conduction sound generating device according to claim 5, characterized in that: The first driving element and the second driving element are both magnets, and the first vibrating element and the second vibrating element are both coils.

7. The bone conduction sound generating device according to claim 5, characterized in that: One of the first driving element and the second driving element is a coil, the other of the first driving element and the second driving element is a magnet or a non-magnetic ferromagnetic solid, and the first vibrating element and the second vibrating element are both coils.

8. The bone conduction sound generating device according to any one of claims 1 to 7, characterized in that: The elastic element is a flat elastic piece.

9. The bone conduction sound generating device according to any one of claims 1 to 7, characterized in that: The elastic element is a rubber sheet, a sound film or a plane spring.

10. The bone conduction sound generating device according to any one of claims 1 to 7, characterized in that: The sound-generating structure, the controller and the functional structure are packaged to form an integrated bone conduction sound-generating device.

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