CN115119087B - Bone conduction sounding unit and wearable equipment - Google Patents
Bone conduction sounding unit and wearable equipment Download PDFInfo
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- CN115119087B CN115119087B CN202210476066.2A CN202210476066A CN115119087B CN 115119087 B CN115119087 B CN 115119087B CN 202210476066 A CN202210476066 A CN 202210476066A CN 115119087 B CN115119087 B CN 115119087B
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- outer frame
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 53
- 238000009434 installation Methods 0.000 claims abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 15
- 239000000741 silica gel Substances 0.000 claims description 15
- 229910002027 silica gel Inorganic materials 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 2
- 239000004945 silicone rubber Substances 0.000 claims description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 2
- 239000011521 glass Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000004044 response Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000862 numbness Toxicity 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1091—Details not provided for in groups H04R1/1008 - H04R1/1083
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/13—Hearing devices using bone conduction transducers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The invention discloses a bone conduction sounding unit and wearable equipment, wherein the bone conduction sounding unit comprises a shell, a flexible piece and a vibration sounding module, the shell comprises a containing cavity, and an installation hole communicated with the containing cavity is formed in the upper end face of the shell. The flexible member is connected to the housing within the mounting hole. The vibration sounding module is arranged in the accommodating cavity, one end of the vibration sounding module is connected with the flexible piece, and the other end of the vibration sounding module is elastically connected with the shell. When the bone conduction sounding unit works, the influence of vibration of the vibration sounding module on the shell is small, so that leakage sound is reduced, and the volume heard by a user is increased.
Description
Technical Field
The present disclosure relates to acoustic devices, and particularly to a bone conduction sounding unit and a wearable device.
Background
Some wearable devices use bone conduction technology to realize sound transmission, such as bone conduction headphones, bone conduction glasses and the like, and as the bone conduction headphones can transmit sound through the skull without transmitting sound through air, the wearable devices are little disturbed by noisy environments, and simultaneously can liberate ears, so that uncomfortable feeling caused by plugging in the headphones is reduced.
At present, a vibration sounding module in the wearable device is generally directly fixed in a shell, so that the shell is connected with vibration to form a vibration body with large mass when the vibration sounding module vibrates, larger energy is needed to drive sounding, the volume of the wearable device is small, and sound leakage is serious.
Accordingly, there is a need for an improvement over the prior art to overcome the deficiencies described in the prior art.
Disclosure of Invention
The invention aims to provide a bone conduction sounding unit and wearable equipment, which can reduce leakage.
To achieve the above object, in one aspect, the present invention provides a bone conduction sound generating unit, including:
the shell comprises a containing cavity, and the upper end surface of the shell is provided with a mounting hole communicated with the containing cavity;
the flexible piece is connected in the mounting hole of the shell; the method comprises the steps of,
and the vibration sounding module is arranged in the accommodating cavity, one end of the vibration sounding module is connected with the flexible piece, and the other end of the vibration sounding module is elastically connected with the shell.
Further, the flexible piece is made of silica gel, rubber or TPE, and the hardness of the flexible piece is 10-80 SHA.
Further, the hardness of the silica gel is 40-70 SHA.
Further, the flexible piece is provided with a containing groove, and the end part of the vibration sounding module is connected in the containing groove in a matching mode.
Further, the flexible piece comprises a body part extending into the accommodating cavity, and the accommodating groove is formed in the end face, facing the accommodating cavity, of the body part.
Further, the flexible member includes from the convex part of body portion side protrusion, first mounting groove has been seted up to the up end of shell and set up in second mounting groove on the groove bottom surface of first mounting groove, first mounting groove with the second mounting groove all runs through preceding terminal surface and the rear end face of shell, body portion locates in the first mounting groove, the convex part is located in the second mounting groove.
Further, the flexible member is flush with the upper end surface of the housing, or the flexible member protrudes from the upper end surface of the housing.
Further, an included angle between the vibration axis of the vibration sounding module and the normal line of the upper end surface of the housing or the normal line of the surface of the flexible piece for contacting with the skin of the human body is in a range of 0-30 degrees.
Further, the bone conduction sounding unit further comprises a first elastic sheet, wherein the first elastic sheet comprises a bracket connected with the vibration sounding module and a first vibrating arm connected between the bracket and the shell.
Further, the shell is provided with at least two supporting seats arranged at intervals, and the first vibrating arms are connected with the supporting seats.
Further, the shell comprises a first plate body and a second plate body which are oppositely arranged, the accommodating cavity is located between the first plate body and the second plate body, the flexible piece is connected to the first plate body, and the supporting seat is arranged on the second plate body.
Further, the second plate body is further provided with a limiting boss protruding towards the vibration sounding module, and a vibration space is formed between the limiting boss and the vibration sounding module.
Further, the vibration sounding module comprises an outer frame with one end being open, a stator arranged in the outer frame, a second elastic sheet connected to the open end of the outer frame and a rotor connected with the second elastic sheet, wherein the second elastic sheet comprises an outer frame body connected with the outer frame, a central body arranged in the outer frame body and a second vibrating arm connected between the outer frame body and the central body, the rotor is connected with the central body, and the support is provided with an avoidance hole for avoiding the vibration of the central body and the second vibrating arm.
Further, the vibration sounding module comprises an outer frame with one end being open, a stator and a rotor, wherein the stator and the rotor are arranged in the outer frame, the support is connected to the open end of the outer frame, the support is annular, the first elastic sheet comprises a central body arranged in the support and a second vibrating arm connected between the support and the central body, and the rotor is connected with the central body.
In another aspect, the invention also proposes a wearable device comprising a bone conduction sound emitting unit as described in any one of the above.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the flexible piece is arranged on the shell, one end of the vibration sounding module is connected with the flexible piece, and the other end of the vibration sounding module is elastically connected with the shell, so that the influence of the vibration sounding module on the shell can be reduced, the vibration of the shell is reduced, the leakage sound is reduced, and the sound heard by a user is increased.
2. Through set up the holding tank on the flexible piece to locate the holding tank with vibration sound production module's tip in, can make all separate through the flexible piece between vibration sound production module's periphery and the shell, the flexible piece can play better bradyseism effect.
3. The vibration sounding module realizes the elastic connection with the shell through the first elastic sheet, so that the connection effect of the vibration sounding module and the shell is better, the vibration is not easy to occur in the process of vibration, and the reliability of the bone conduction sounding unit is better.
Drawings
Fig. 1 is a schematic structural view of a bone conduction sound unit according to an embodiment of the present invention.
Fig. 2 is an exploded view of the bone conduction sound unit shown in fig. 1.
Fig. 3 is a left side view of the bone conduction sound unit shown in fig. 1.
Fig. 4 is a schematic structural view of a first housing according to an embodiment of the present invention.
Fig. 5 is a cross-sectional view of a housing according to one embodiment of the present invention.
Fig. 6 is a cross-sectional view of the bone conduction sound unit shown in fig. 1.
Fig. 7 is a schematic view of the structure of a flexible member according to an embodiment of the present invention.
Fig. 8 is a cross-sectional view of the bone conduction sound unit shown in fig. 1 in another view.
Fig. 9 is a schematic structural diagram of a vibration sounding module connected to a first elastic sheet according to an embodiment of the present invention.
Fig. 10 is a schematic structural diagram of a first elastic sheet according to an embodiment of the present invention.
Fig. 11 is a schematic structural view of a second housing according to an embodiment of the present invention.
Fig. 12 is a cross-sectional view of a vibration sound module according to an embodiment of the present invention.
Fig. 13 is a schematic structural view of the vibration sound module shown in fig. 12.
Fig. 14 is a schematic structural view of a first elastic sheet according to an embodiment of the present invention.
Fig. 15 is a schematic structural diagram of a first elastic piece and a second elastic piece according to an embodiment of the present invention.
Fig. 16 is a graph of the frequency response of the bone conduction sound unit when the flexible member thereof is made of silica gel having different hardness.
Fig. 17 is an amplitude chart of the bone conduction sound unit when the flexible member thereof adopts silica gel of different hardness.
Fig. 18 is an enlarged view of the section I in fig. 17.
Detailed Description
In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not limiting. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present application are shown in the drawings. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The terms "comprising" and "having" and any variations thereof herein are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
As shown in fig. 1 to 14, the present invention proposes a bone conduction sounding unit including a housing 1, a flexible member 2 connected to the housing 1, and a vibration sounding module 3 provided in the housing 1.
Referring to fig. 1 to 3, the housing 1 includes a first case 10 and a second case 11 connected to each other, wherein the first case 10 includes a first plate 1a and two first side plates 1c connected to both sides of the first plate 1a, and the second case 11 includes a second plate 1b and two second side plates 1d connected to both sides of the second plate 1b, the first plate 1a and the second plate 1b being disposed opposite to each other, in this embodiment, in parallel to each other. The first casing 10 and the second casing 11 are connected to each other by two first side plates 1c and two second side plates 1d, for example, by gluing, fastening, welding, or the like, and after the connection is completed, the first casing 10 and the second casing 11 cooperate to form a housing cavity 12.
In a preferred embodiment, the housing 1 is made of plastic or metal.
Referring to fig. 4 to 6, a mounting hole 100 is formed in the upper end surface 14 of the housing 1, and the mounting hole 100 penetrates the first plate body 1a and communicates with the housing chamber 12. The flexible member 2 is coupled to the first housing 10 in the mounting hole 100, and is coupled to the first housing 10 by means of adhesion or welding, or is molded to the first housing 10 by means of two-shot molding. The flexible member 2 is partially exposed to the outside of the housing 1 and partially exposed to the inside of the housing cavity 12. When the bone conduction sounding unit is used, the flexible piece 2 is contacted with the skin of the face of a person to transmit vibration, and the touch feeling of the flexible piece 2 is more comfortable because the flexible piece 2 is softer than the shell 1. The material of the flexible member 2 is, for example, silicone rubber, TPE, or rubber.
The vibration sounding module 3 is used for generating vibration, and is arranged in the accommodating cavity 12. One end of the vibration sounding module 3 is connected with the flexible piece 2, and the other end is elastically connected with the second plate body 1 b. Because the upper end and the lower end of the vibration sounding module 3 are in non-fixed connection with the shell 1, certain elasticity is arranged between the upper end and the lower end, the vibration sounding module 3 can play a good role in buffering, the shell 1 is not completely driven to vibrate when the vibration sounding module 3 vibrates, the vibration quantity transferred to the shell 1 is smaller, and the whole vibration feeling and the leakage sound can be effectively reduced. In addition, the vibration can be directly transmitted to the face of the person through the flexible member 2, less energy is transmitted to the housing 1, and the vibration energy is more concentrated, so that the vibration sound volume of the vibration sound module 3 is improved, and the sound pressure level (sensitivity) heard by the person through vibration transmission is improved.
In one embodiment, the flexible member 2 is made of silica gel, and the silica gel has good touch feeling, which is beneficial to improving wearing comfort. Further, the silica gel is a hard silica gel having a hardness of 10 to 80SHA, preferably 40 to 70SHA, and more preferably 60SHA. Referring to fig. 16 to 18, fig. 16 is a simulation diagram of a frequency response curve of the bone conduction sound generating unit when the flexible member 2 is made of silica gel having different hardness, fig. 17 is an overall amplitude diagram obtained by simulation of the bone conduction sound generating unit when the flexible member 2 is made of silica gel having different hardness, and fig. 18 is an enlarged diagram of the section I in fig. 17. When the hardness of the silica gel is too small, although the sensitivity of a medium frequency band (800 Hz-1500 Hz) is still good, the wearing experience of a person becomes poor due to the too large amplitude, and the human body part contacted with the bone conduction sounding unit can feel obvious numbness and has poor comfort; when the hardness of the silica gel is too large, although the amplitude becomes smaller, the human body feels comfortable to wear, but the frequency response curve is attenuated in the middle frequency band and even the distortion of the curve occurs, and at this time, the sound quality heard by the person becomes poor, and the final user experience is affected. By limiting the hardness of the silica gel between 40 and 70SHA, the frequency response curve is not distorted in the middle frequency, the tone quality is easy to ensure, and the amplitude of the bone conduction sounding unit is smaller. Further, when the hardness of the silica gel is 60SHA, the frequency response curve and the amplitude of the bone conduction sounding unit can be well balanced, and better tone quality and use experience are obtained.
When the flexible member 2 is made of other materials, it is also preferable that the hardness thereof is within the aforementioned preferable hardness range, and by properly defining the hardness of the flexible member 2, the flexible member 2 can be well balanced between the feeling and the cushioning effect.
In one embodiment, the vibration sound emitting module 3 is partially embedded in the flexible member 2, so that the flexible member 2 is in direct contact with the vibration sound emitting module 3, and the relative position of the vibration sound emitting module 3 and the flexible member 2 can be defined. As a possible structure, referring to fig. 6 to 8, the flexible member 2 is provided with a receiving groove 200, the shape of the receiving groove 200 is adapted to the shape of the end of the vibration sounding module 3, and the upper end of the vibration sounding module 3 is mounted in the receiving groove 200. Preferably, the receiving groove 200 is tightly fitted with the upper end of the vibration sound module 3. Since the vibration sounding module 3 and the first plate body 1a are separated by the flexible member 2, the flexible member 2 can play a more sufficient and comprehensive role in damping. As a further improvement, the flexible member 2 includes a body portion 20 extending into the receiving cavity 12, and the receiving groove 200 is provided on an end surface 201 of the body portion 20 facing the receiving cavity 12. Further preferably, the upper end of the vibration and sound module 3 is lower than the height of the inner surface 104 of the first plate body 1a or is flush with the inner surface 104, so that vibration is not directly transmitted to the first plate body 1a in the process of being transmitted transversely (X axis in the drawing) from the body portion 20, and the vibration blocking effect is better.
As shown in fig. 4 and 5, the upper end surface 14 of the housing 1 is provided with a first mounting groove 101, the bottom 1010 of the first mounting groove 101 is provided with a second mounting groove 102, and the second mounting groove 102 extends below the inner surface 104 of the first plate 1a and is communicated with the accommodating cavity 12, so as to form the mounting hole 100. The flexible member 2 includes two protrusions 21 protruding from both sides of the body portion 20, and the body portion 20 and the protrusions 21 are respectively located in the first mounting groove 101 and the second mounting groove 102. In this way, the contact area between the flexible member 2 and the first housing 10 is larger, and after the flexible member is connected with the first housing 10 by means of bi-color injection molding, welding or gluing, the flexible member is connected with the first housing 10 more firmly and is not easy to fall off. Preferably, the first mounting groove 101 and the second mounting groove 102 penetrate the front end surface 15 and the rear end surface 16 of the housing 1, and referring to fig. 8, during the transmission of the vibration from the body portion 20 in the longitudinal direction (Y axis in the drawing), the vibration is not directly transmitted to the first plate body 1a, and the transmission of the vibration to the housing 1 is further hindered.
In a preferred embodiment, the surface 23 of the flexible element 2 intended to be in contact with the skin is flush with the upper end face 14 of the housing 1. In another preferred embodiment, referring to fig. 6, the surface 23 of the flexible element 2 for contacting the skin is a convex arc surface, and the surface 23 protrudes from the upper end surface 14 of the housing 1, so that, on one hand, the thickness of the flexible element 2 can be increased, and on the other hand, the area of the flexible element 2 contacting the skin can be more concentrated.
As a preferred embodiment, referring to fig. 9 and 10, the bone conduction sounding unit further includes a first elastic piece 4, and the vibration sounding module 3 is elastically connected to the housing 1 through the first elastic piece 4. The first elastic sheet 4 comprises a bracket 40 and a first vibrating arm 41 connected with the bracket 40, and the bracket 40 and the first vibrating arm 41 are integrally formed. The support 40 is fixedly connected with the bottom of the vibration sounding module 3, and the first vibration arms 41 extend outwards from the support 40, and the ends of the first vibration arms are connected with the shell 1. When the vibration sounding module 3 vibrates, the bracket 40 is fixed with the vibration sounding module 3, so that the bracket moves synchronously with the vibration sounding module 3, the first vibrating arm 41 elastically deforms along with the integral vibration of the vibration sounding module 3, and the direct transmission of the integral vibration of the vibration sounding module 3 to the housing 1 is reduced, so that the integral vibration sense of the housing 1 is lightened. The material of the first elastic sheet 4 may be, for example, stainless steel.
Referring to fig. 10, the first elastic piece 4 includes four first vibrating arms 41, and two first vibrating arms 41 are symmetrically disposed at two sides of the bracket 40, so that the first elastic piece 4 vibrates more stably. In other embodiments, one or more first vibrating arms 41 may be symmetrically disposed on both sides of the bracket 40.
As a preferred embodiment, referring to fig. 5, 6 and 11, the second plate 1b is provided with at least two supporting seats 13 disposed at intervals, and the supporting seats 13 are located in the receiving chamber 12 and protrude toward the side of the vibration sound emitting module 3. The end of the first vibrating arm 41 is fixedly connected to the support base 13. In other embodiments, the support base 13 may be disposed at other positions, for example, two support bases 13 disposed at intervals are disposed on each of the two first side plates 1c of the first housing 10, and the ends of the four first vibrating arms 41 are connected to the four support bases 13, respectively.
The vibration sound module 3 generally includes a stator and a mover, which vibrates through interaction of electromagnetic force between the mover and the stator. As a preferred embodiment, referring to fig. 12, the vibration sound module 3 includes a housing 30, a stator provided in the housing 30, a second elastic piece 32 connected to the housing 30, and a mover connected to the second elastic piece 32. The upper end of the outer frame 30 is connected with the flexible member 2, and the lower end is opened. The stator includes a coil 310 and a first magnet 311 disposed in the coil 310, and the coil 310 and the first magnet 311 are fixedly connected to the top plate 300 of the outer frame 30. The mover includes a second magnet 330 disposed opposite to the first magnet 311, the poles of both magnets are arranged along the vibration axis of the mover, and the two magnets are disposed homopolar opposite to each other, thereby forming a repulsive force therebetween. The outer frame 30 is made of magnetic conductive materials, the attractive force between the second magnet 330 and the outer frame 30 is equal to the repulsive force between the first magnet 311 and the second magnet 330, and the directions are opposite, so that the second magnet 330 is in a static equilibrium state, and is more sensitive to the change of a magnetic field.
As shown in fig. 13, the second elastic sheet 32 includes an annular outer frame body 320 connected to the outer frame 30, a central body 321 disposed in the outer frame body 320, and a second vibrating arm 322 connected between the outer frame body 320 and the central body 321, where the mover is connected to the central body 321, and when the mover is energized, a changing magnetic field is generated to make the mover vibrate under the driving of the magnetic field, and in the process of vibration, the second vibrating arm 322 is elastically deformed, so as to provide a restoring force, and the vibrating axis 3a of the mover is a vibrating axis of the vibrating sound generating module 3, which passes through the flexible member 2, preferably, an included angle between the vibrating axis and a normal line of the upper end surface 14 of the housing 1 or a normal line of the surface 23 of the flexible member 2 for contacting with skin is in a range of 0 ° to 30 ° (when the upper end surface 14 and the surface 23 may be plane or arc surfaces, and when the upper end surface is plane, the included angle between the vibrating axis and a normal line of the plane is a fixed value of 0 ° to 30 °), and when the included angle between the vibrating axis and each point on the arc surface is between the arc surfaces is in a range of 0 ° to 30 °. Referring to fig. 14 and 15, the bracket 40 of the first elastic sheet 4 is connected to the bottom of the outer frame 320, and the two may be connected by, for example, gluing or welding. Since the central body 321 and the second vibrating arm 322 of the first elastic sheet 4 move up and down in the vibration process and protrude to the lower end of the outer frame 30, the bracket 40 is provided with the avoiding hole 400 for avoiding the vibration of the central body 321 and the second vibrating arm 322.
The first elastic piece 4 and the second elastic piece 32 may be integrated, in which case the overall thickness of the first elastic piece 4 and the second elastic piece 32 can be further reduced, referring to fig. 10, the support 40 of the first elastic piece 4 is in a ring shape, the first elastic piece 4 further includes a central body 321 disposed in the support 40, and a second vibrating arm 322 connected between the support 40 and the central body 321, and the mover is connected to the central body 321. In this way, the bracket 40 and the outer frame 320 described above are integrated into one piece, and the overall structure is more compact.
In order to prevent the vibration sounding module 3 from being damaged due to excessive vibration displacement or artificial pressing of the flexible member, as shown in fig. 6 and 11, a limiting boss 110 is further disposed below the vibration sounding module 3, and preferably, the limiting boss 110 is disposed on the second plate 1b, protruding toward the vibration sounding module 3 and located between the two supporting seats 13. A vibration space 5 is arranged between the limiting boss 110 and the first elastic sheet 4 so as to allow the vibration sounding module 3 to vibrate and move in a certain area. Since the distance between the vibration sounding module 3 and the limiting boss 110 is greater than the distance between the vibration sounding module 3 and the second plate body 1b, the limiting boss 110 can limit the maximum displacement of the vibration sounding module 3, and prevent the vibration sounding module 3 from being damaged due to overlarge displacement under the conditions of falling, impact and the like. Further, a flexible pad may be attached to the upper surface of the limiting boss 110 and/or the lower surface of the central body 321, so as to play a role in buffering.
The invention also proposes a wearable device, such as a bone conduction headset, bone conduction glasses or the like, provided with a bone conduction sound unit as described above.
When the wearable device is bone conduction glasses, preferably, the shell 1 and the vibration sounding module 3 are long-strip-shaped, and the shell 1 can be used as a glasses leg of the bone conduction glasses, so that the bone conduction sounding unit can be more conveniently combined to the bone conduction glasses to be used as a part of a glasses frame. When bone conduction glasses are worn on the head, the flexible pieces 2 are clamped on two sides of the head of a person and are attached to the skin of the face, so that efficient vibration is transmitted, meanwhile, the vibration quantity of the shell 1 perceived by the face of the person is small, the vibration feeling of the whole glasses is weak, and the wearing of the person is more comfortable.
The foregoing is merely exemplary of the invention and other modifications can be made without departing from the scope of the invention.
Claims (14)
1. A bone conduction sound generating unit, comprising:
the shell (1) comprises a containing cavity (12), and an installation hole (100) communicated with the containing cavity (12) is formed in the upper end face (14) of the shell (1);
the flexible piece (2) is arranged in the mounting hole (100) of the shell (1) and is connected with the shell (1), and part of the flexible piece (2) is exposed out of the shell (1) and part of the flexible piece is exposed in the accommodating cavity (12); the method comprises the steps of,
the vibration sounding module (3) is arranged in the accommodating cavity (12), one end of the vibration sounding module (3) is connected with the part of the flexible piece (2) exposed in the accommodating cavity (12), and the other end of the vibration sounding module is elastically connected with the shell (1);
the bone conduction sounding unit further comprises a first elastic sheet (4), wherein the first elastic sheet (4) comprises a support (40) connected with the vibration sounding module (3) and a first vibrating arm (41) connected between the support (40) and the shell (1).
2. The bone conduction sounding unit as set forth in claim 1, wherein the material of the flexible member (2) is silicone rubber, rubber or TPE, and the hardness of the flexible member (2) is 10-80 SHA.
3. The bone conduction sounding unit of claim 2, wherein the hardness of the silica gel is 40-70 SHA.
4. Bone conduction sound unit according to claim 1, characterized in that the flexible member (2) is provided with a receiving groove (200), and the vibration sound module (3) is end-fitted in the receiving groove (200).
5. The bone conduction sound unit according to claim 4, wherein the flexible member (2) includes a body portion (20) extending into the receiving chamber (12), and the receiving groove (200) is provided on an end surface (201) of the body portion (20) facing the receiving chamber (12).
6. The bone conduction sounding unit as set forth in claim 5, wherein the flexible member (2) includes a convex portion (21) protruding from a side surface of the body portion (20), a first mounting groove (101) and a second mounting groove (102) provided on a groove bottom surface (1010) of the first mounting groove (101) are provided on an upper end surface (14) of the housing (1), the first mounting groove (101) and the second mounting groove (102) both penetrate through a front end surface (15) and a rear end surface (16) of the housing (1), the body portion (20) is provided in the first mounting groove (101), and the convex portion (21) is provided in the second mounting groove (102).
7. Bone conduction sound unit according to claim 1, characterized in that the flexible member (2) is flush with the upper end surface (14) of the housing (1) or that the flexible member (2) protrudes from the upper end surface (14) of the housing (1).
8. Bone conduction sound unit according to claim 1, characterized in that the angle between the vibration axis of the vibration sound module (3) and the normal of the upper end face (14) of the housing (1) or the normal of the surface (23) of the flexible member (2) for contact with human skin is in the range of 0-30 °.
9. Bone conduction sound unit according to any one of claims 1 to 8, characterized in that the housing (1) is provided with at least two spaced apart support seats (13), the first vibrating arms (41) being connected to the support seats (13).
10. The bone conduction sounding unit as set forth in claim 9, wherein the housing (1) includes a first plate body (1 a) and a second plate body (1 b) disposed opposite to each other, the housing cavity (12) is located between the first plate body (1 a) and the second plate body (1 b), the flexible member (2) is connected to the first plate body (1 a), and the support base (13) is disposed on the second plate body (1 b).
11. The bone conduction sounding unit as set forth in claim 10, wherein the second plate body (1 b) is further provided with a limit boss (110) protruding toward the vibration sounding module (3), and a vibration space (5) is provided between the limit boss (110) and the vibration sounding module (3).
12. The bone conduction sounding unit as set forth in any one of claims 1 to 8, wherein the vibration sounding module (3) includes an outer frame (30) having one end opened, a stator provided in the outer frame (30), a second elastic sheet (32) connected to the opened end of the outer frame (30), and a mover connected to the second elastic sheet (32), the second elastic sheet (32) includes an outer frame body (320) connected to the outer frame (30), a central body (321) provided in the outer frame body (320), and a second vibrating arm (322) connected between the outer frame body (320) and the central body (321), the mover is connected to the central body (321), and the bracket (40) is provided with an avoidance hole (400) for avoiding vibration of the central body (321) and the second vibrating arm (322).
13. The bone conduction sounding unit as set forth in any one of claims 1 to 8, wherein the vibration sounding module (3) includes an outer frame (30) having one end opened, a stator and a mover provided in the outer frame (30), the bracket (40) is connected to the opened end of the outer frame (30), the bracket (40) is ring-shaped, and the first elastic sheet (4) includes a central body (321) provided in the bracket (40) and a second vibration arm (322) connected between the bracket (40) and the central body (321), and the mover is connected to the central body (321).
14. A wearable device comprising the bone conduction sound emitting unit of any one of claims 1 to 13.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210476066.2A CN115119087B (en) | 2022-04-29 | 2022-04-29 | Bone conduction sounding unit and wearable equipment |
| PCT/CN2023/090900 WO2023208050A1 (en) | 2022-04-29 | 2023-04-26 | Bone conduction sound-producing unit and wearable device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210476066.2A CN115119087B (en) | 2022-04-29 | 2022-04-29 | Bone conduction sounding unit and wearable equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115119087A CN115119087A (en) | 2022-09-27 |
| CN115119087B true CN115119087B (en) | 2024-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210476066.2A Active CN115119087B (en) | 2022-04-29 | 2022-04-29 | Bone conduction sounding unit and wearable equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN115119087B (en) |
| WO (1) | WO2023208050A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115119087B (en) * | 2022-04-29 | 2024-04-05 | 苏州索迩电子技术有限公司 | Bone conduction sounding unit and wearable equipment |
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| Publication number | Publication date |
|---|---|
| WO2023208050A1 (en) | 2023-11-02 |
| CN115119087A (en) | 2022-09-27 |
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