CN219499492U

CN219499492U - Transducer fixing device with vibration supporting arm

Info

Publication number: CN219499492U
Application number: CN202320280789.5U
Authority: CN
Inventors: 吴恒; 王元聪
Original assignee: Maijike Shandong Medical Instrument Co ltd
Current assignee: Maijike Shandong Medical Instrument Co ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-08-08
Anticipated expiration: 2033-02-21

Abstract

The utility model discloses a transducer fixing device with a vibration supporting arm, which comprises: a front shell connected with the shell; a transducer connected to the front housing; the transducer includes: an electromagnetic assembly connected to the housing; a vibration plate connected with the electromagnetic component, and the edge of the vibration plate is connected with the front shell; and the adhesive layer is connected with the inner wall of the front shell and the vibration piece so that the audio vibration of the electromagnetic assembly is conducted to the front shell through the edge of the vibration piece. The electromagnetic assembly converts the audio signal into the audio vibration and transmits the audio vibration to the vibration piece, and transmits the vibration to the front shell through the peripheral ring part or the center of the vibration piece so as to transmit the audio vibration to a wearer, so that the vibration piece connected internally is not affected when the front shell is pressed, the purpose of reducing leakage sound when the transducer is used for transduction can be realized, and the vibration transmission efficiency is improved.

Description

Transducer fixing device with vibration supporting arm

Technical Field

The utility model relates to the field of bone conduction headphones, in particular to a transducer fixing device with a vibration supporting arm.

Background

The bone conduction earphone can convert the audio signal into audio vibration with different frequencies, and transmits the audio vibration to human tissues and bones when the audio vibration contacts with human skull bones, and further transmits the audio vibration to auditory nerves, so that a wearer can hear the sound in a bone conduction mode, and the bone conduction earphone needs to play bone conduction to the user immediately after the peripheral pickup is enhanced and noise is reduced. The core component of the bone conduction earphone is a bone conduction loudspeaker, also called a vibration transducer, and is used for converting an audio signal into vibration mechanical energy of the vibration transducer and closing to the cheekbone position in front of the ear and conducting vibration.

In the existing design scheme, the soft rubber piece can generate dislocation when the fixing device is worn or the soft rubber piece is pressed, so that the vibration piece connected with the soft rubber piece is affected, the transducer is easy to leak sound when the transducer is used for transducing an audio signal, and the transmission efficiency of bone conduction vibration is affected.

Accordingly, the prior art is still in need of improvement and development.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, an object of the present utility model is to provide a transducer fixing device with a vibration supporting arm, which aims to solve the problem that the vibration transmission efficiency is to be improved due to the fact that the existing transducer is prone to sound leakage.

The technical scheme of the utility model is as follows:

the utility model provides a transducer fixture having a vibration support arm, comprising: a housing; a front shell connected with the shell; a transducer connected to the front housing; the transducer includes: an electromagnetic assembly connected to the housing; a vibration plate connected with the electromagnetic component, and the edge of the vibration plate is connected with the front shell; and the adhesive layer is connected with the inner wall of the front shell and the vibration piece so that the audio vibration of the electromagnetic assembly is conducted to the front shell through the edge of the vibration piece.

The transducer fixing device with the vibration supporting arm is characterized in that the front shell is a soft front shell, and the central area of the vibration piece is connected with the middle part of the soft front shell; the rubber layer is a vibration transmission piece, and the vibration transmission piece is connected with the middle part of the soft front shell and the central area of the vibration piece.

The transducer fixing device with the vibration supporting arm is characterized in that the front shell is a hard front shell, a movable gap positioned at the inner side of the adhesive layer is formed between the inner wall of the middle area of one side of the hard front shell facing the vibration piece and the central area of the vibration piece, and the peripheral ring part of the vibration piece is connected with the hard front shell; the glue layer is a hollow glue layer, and the hollow glue layer is connected with the inner wall of the hard front shell and the edge of the vibrating piece.

The transducer fixing device with the vibration supporting arm is characterized in that the peripheral ring part of the vibration piece is connected with the shell and the hard front shell; the vibrating piece further includes: a vibration area part connected with the electromagnetic assembly; and the vibration support arm is connected with the vibration surface area part and the peripheral ring part and can vibrate in the movable gap.

The transducer fixture having a vibration support arm, wherein the electromagnetic assembly comprises: the magnetic steel structure is connected with the vibration surface area part; the coil is connected with the inner wall of the shell and is arranged opposite to the magnetic steel structure; when the electromagnetic assembly receives an audio signal, the coil and the magnetic steel structure act to generate a magnetic field, so that the audio signal is converted into audio vibration of the magnetic steel structure and is conducted to the central area of the vibration piece.

The transducer fixing device with the vibration supporting arm is characterized in that a silica gel layer is arranged on one side of the hard front shell, which is away from the shell, and the silica gel layer is used for contacting with the skin of a wearer; the housing includes: a bottom case; the middle shell is connected with the bottom shell; the supporting structure is connected with the bottom shell and is abutted with the peripheral ring part; and/or

The side end of the middle shell is provided with a sound guide hole, and the sound guide hole faces towards the ear canal opening of the wearer and/or the sound guide hole does not face towards the ear canal opening of the wearer.

The transducer fixture having a vibration support arm, wherein the magnetic steel structure comprises: the first magnetic steel is connected with the central area of the vibration piece; and/or

One side of the coil, which is away from the first magnetic steel, is provided with a fixing piece, and the fixing piece is connected with the bottom shell.

The transducer fixture having a vibration support arm, further comprising: the second magnetic steel is plugged in the coil and is opposite to the first magnetic steel.

The transducer fixing device with the vibration supporting arm is characterized in that a first positioning column is arranged on one side, facing the front shell, of the supporting structure, first positioning holes are respectively formed in two sides of the peripheral ring part, and the first positioning column is connected with the first positioning holes in a matched mode; and/or

The supporting structure deviates from the front shell one side is equipped with the second reference column, the four sides of mounting are equipped with the second locating hole respectively, the second reference column with the cooperation of second locating hole is connected.

The transducer fixture having a vibration support arm, wherein the electromagnetic assembly comprises: a coil connected to the vibrating reed; the magnetic steel structure is connected with the inner wall of the shell and is arranged opposite to the coil; when the electromagnetic assembly receives an audio signal, the coil and the magnetic steel structure act to generate a magnetic field, so that the audio signal is converted into audio vibration of the coil and is conducted to the central area of the vibration piece.

The beneficial effects are that: a bone conduction headset with a vibration support arm for a transducer, wherein the headset of the first embodiment comprises: a housing; a soft front shell connected with the shell; a transducer connected to the soft front shell; the transducer includes: an electromagnetic assembly connected to the housing; a vibrating piece connected with the electromagnetic component, and a peripheral ring part of the vibrating piece is connected with the soft front shell; the upper end face and the lower end face of the vibration transmission piece are respectively connected with the middle part of the inner wall of the soft front shell and the central area part of the vibration piece, and a movable gap is reserved between the soft front shell and the peripheral ring part of the vibration piece; the first implementation mode is through preceding shell, trembler, vibration transfer spare, electromagnetic component and the setting mode between the casing, and electromagnetic component converts audio signal into audio vibration and conducts to the central area portion of trembler, further conducts to soft preceding shell inner wall middle part, soft preceding shell outer wall middle part through vibration transfer spare to conduct audio vibration to the wearer, thereby realize reducing the purpose of leaking sound when transducer transduction, in order to improve vibration transmission efficiency. The earphone of the second embodiment includes: a housing; a hard front shell connected with the shell; a transducer connected to the hard front shell; the transducer includes: an electromagnetic assembly connected to the housing; and the vibrating piece is connected with the electromagnetic component, the peripheral ring part of the vibrating piece is connected with the hard front shell, and a movable gap is formed between the hard front shell and the central area part and the peripheral ring part of the vibrating piece. The second implementation mode is through the setting mode between preceding shell, trembler, electromagnetic component and the casing, and electromagnetic component converts audio signal into audio vibration and conducts to the central area portion of trembler, further conducts to casing and stereoplasm preceding shell through vibration support arm, peripheral circle portion to conduct audio vibration to the person of wearing, thereby realize reducing the purpose of leaking sound when transducer transduction, in order to improve vibration transmission efficiency.

Drawings

Fig. 1 is an exploded view of a bone conduction headset of the present utility model in a state in which the headset includes a cable and a housing;

FIG. 2 is an exploded view of a second embodiment of a transducer mount having a vibration support arm of the present utility model;

fig. 3 is a plan sectional view, taken from the center, of the bone conduction headset of the present utility model;

fig. 4 is a perspective cross-sectional view of a bone conduction headset of the present utility model in another cut-away position;

FIG. 5 is a perspective cross-sectional view of the support structure, vibrating plate, coil and magnetic steel structure of the present utility model;

fig. 6 is a perspective view of the support structure and the vibration plate of the present utility model;

fig. 7 is a perspective view of a vibrating plate of the present utility model;

FIG. 8 is an exploded view of a first embodiment of a transducer mount having a vibration support arm of the present utility model;

FIG. 9 is a schematic view showing the connection of the vibration plate of FIG. 8 to the vibration transmitting member according to the present utility model;

fig. 10 is a perspective view of another example of the fixing member in the first embodiment of the present utility model;

FIG. 11 is an exploded view of the soft front shell and support of the present utility model;

fig. 12 is a schematic view showing a connection between the vibration plate protrusion and the soft front case in the first embodiment of the present utility model;

Fig. 13 is a schematic view showing connection between the soft front case protrusion and the vibration plate limiting structure in the first embodiment of the present utility model;

FIG. 14 is a schematic view of the vibrating plate of FIG. 13 with a limiting structure according to the present utility model;

fig. 15 is a schematic view of a vibration plate and a soft front case respectively having a limiting structure according to a first embodiment of the present utility model;

fig. 16 is a schematic view of the present utility model from another perspective as shown in fig. 15.

Reference numerals illustrate:

100-a housing; 110-bottom shell; 120-middle shell; 121-an annular concave glue groove; 130-a support structure; 131-a first positioning column; 132-a second positioning post; 200-a hard front shell; 201-soft front shell; 210-a hollow glue layer; 211-a vibration transmission member; 300-transducers; 310-vibrating piece; 311—vibration area; 312-peripheral loop; 3121-a first positioning hole; 313-vibrating support arm; 320-electromagnetic assembly; 321-magnetic steel structure; 322-coil; 3221-a first coil; 3222-a mount; 521-coil; 522-a magnetic steel structure; 5221-first magnetic steel; 5222-a mount; 500-support.

Detailed Description

The utility model provides a transducer fixing device with a vibration supporting arm, which is further described in detail below for the purpose, technical scheme and effect of the utility model to be clearer and clearer. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It should be noted that the terms "mounted" and "connected" are to be construed broadly, and may be, for example, screw mounted or snap mounted, unless specifically stated or limited otherwise; the connection can be fixed or detachable; can be directly connected or indirectly connected through an intermediate medium. When an element is referred to as being "fixed" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should also be noted that in the drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus, terms describing the positional relationship in the drawings are merely for exemplary illustration and are not to be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.

In order to solve the above-mentioned problems, the present utility model provides a transducer fixing device with a vibration supporting arm, as shown in fig. 1 to 7, which is a second embodiment of the earphone of the present utility model, and fig. 1 is an exploded view of a second embodiment of the fixing device of the present utility model, which includes a housing (disposed below a bottom case 110) and a cable (connected to an electromagnetic assembly, where a supporting structure 130 of the housing accommodates a cable portion); fig. 8 is a first embodiment of the earphone according to the present utility model, and fig. 9 is a schematic view of a vibration transmission member 211 connecting a central area portion of a vibration piece and a central portion of a soft front case in the first embodiment of the earphone according to the present utility model.

As shown in fig. 8, in the first embodiment (moving coil), since the vibration energy is small, the corresponding front case is a soft front case; in the second embodiment (moving magnet), as shown in fig. 2, 3 or 4, the corresponding front shell is a hard front shell due to the large vibration energy; the fixing device includes: a housing 100; a hard front case 200 connected to the case 100, wherein a chamber is formed between the case 100 and the hard front case 200; a transducer 300 connected to the hard front case 200, the transducer 300 being disposed in the chamber; the transducer 300 comprises: an electromagnetic assembly 320 coupled to the housing 100 for converting an audio signal into an audio vibration of the electromagnetic assembly 320; a vibrating plate 310 connected to the electromagnetic component 320, and a peripheral ring portion 312 of the vibrating plate 310 connected to the hard front case 200; the hollow glue layer 210 connects the inner wall of the hard front case 200 and the edge of the vibration piece (i.e., zhou Bianjuan part 312 described below), a clearance (i.e., a reserved space) is provided between the hard front case 200 and the vibration area part 311 of the vibration piece 310, the vibration piece 310 located at the periphery of the clearance is hollow, i.e., the vibration support arm 313 is disposed between the vibration area part 311 of the vibration piece 310, so that the audio vibration of the electromagnetic assembly 320 is conducted to the hard front case 200 through the edge of the peripheral ring part 312 of the vibration piece 310.

Specifically, the casing 100 is connected to the hard front casing 200 by using the hollow adhesive layer 210, and a sealed cavity is formed inside, so that the transducer 300 is disposed in the cavity, and the electromagnetic component 320 is vibrated and conducted to the central area (i.e. the vibration area portion 311 described below) of the vibration plate 310 in the vibration axial direction of the transducer, and then the vibration plate 310 is conducted to the edge of the hard front casing 200 through the edge (i.e. the Zhou Bianjuan portion 312 described below) thereof, and is conducted to the central boss from the edge, so as to conduct audio vibration to the wearer, thereby achieving the purpose of reducing leakage sound when the transducer is transduced, and improving the vibration transmission efficiency. Note that, since the central area of the vibration plate 310 moves in the movement gap during the vibration of the vibration plate 310, the central area portion of the vibration plate 310 does not contact the inner wall of the hard front case 200 (i.e., the inner wall surface corresponding to the convex surface of the boss) (note that the central area may not be entirely in contact with the inner wall surface of the hard front case, and may be set so as not to contact or be in contact with the central area portion), so that the vibration plate 310 cooperates with the hard front case 200 to improve the conduction efficiency of bone conduction vibration.

The hard front shell 200 is made of hard materials, such as plastic parts, and one side of the hard front shell 200, which faces away from the shell 100, is provided with a boss table surface with a middle boss, a soft adhesive layer (not shown in the figure, the thickness of the soft adhesive layer can be set to be 0.1-2 mm, but is not limited to the thickness, and is used for guaranteeing vibration transmission efficiency) is arranged on the boss table surface of the hard front shell 200, and the soft adhesive layer is used for contacting with the skin of a wearer, so that when the wearer wears the vibration piece 310 is transmitted to the shell 100 through the edge of the hard front shell 200, and is further transmitted to the hard front shell 200 and the middle boss, and further audio vibration is transmitted to the skin of the wearer through the soft adhesive layer; the soft adhesive layer is made of soft material which is molded twice or surface-mounted on one side of the hard front shell 200 facing the skin direction of the wearer, and the soft adhesive layer can be made of flexible materials such as silica gel, rubber, TPU, TPR, TPE and the like, and is not particularly limited herein, so as to improve the comfort after wearing. Note that since the hard front case 200 of the present utility model employs a hard material, vibration transmission efficiency is ensured in the hard material.

In the preferred embodiment of the present utility model, the above-mentioned technical solution is adopted, and by the arrangement mode among the hard front shell, the vibration piece, the electromagnetic component and the shell, the electromagnetic component converts the audio signal into the audio vibration and transmits the audio vibration to the central area of the vibration piece, and transmits the vibration to the edge of the hard front shell through the edge of the vibration piece, and further transmits the vibration from the edge of the hard front shell to the central boss, so as to transmit the audio vibration to the wearer, thereby not affecting the internally connected vibration piece when the hard front shell is pressed, and achieving the purpose of reducing the leakage sound when the transducer is used for transduction, and improving the vibration transmission efficiency.

In this embodiment, as shown in fig. 2, 5 or 7, the vibrating piece 310 includes: a vibration area 311 connected to the coil 321; zhou Bianjuan part 312 connecting the case 100 and the hard front case 200; a vibration support arm 313 (curved, flat spring) connecting the vibration surface area 311 and the peripheral ring 312, the vibration support arm 313 being capable of vibrating in the active gap.

Specifically, as shown in fig. 2 and 4 or 7, the vibration area portion 311 is in a flat key shape, the peripheral ring portion 312 is in a hollow flat key shape, and the vibration support arm 313 includes four curved planar springs, as shown in fig. 7, the vibration transmitted from the coil 210 to the vibration area portion 311 is transmitted to the peripheral ring portion 312 through the planar springs, and then the peripheral ring portion 312 is connected with the edge of the hard front case 200, so as to transmit the vibration from the edge to the central boss of the hard front case 200, thereby achieving the effect of improving the vibration transmission efficiency.

The following two embodiments are distinguished by the fact that the coil is fixed (i.e. the second moving magnet solution, in which case the magnet steel structure and the vibrating plate act as vibrating members) or the magnet steel structure is fixed (i.e. the first moving magnet solution, in which case the coil and the vibrating plate act as vibrating members).

In the first embodiment, the first embodiment is a moving coil bone conduction scheme, a magnetic steel structure is adopted for fixing, a coil and a vibrating piece are used as vibrating components for vibrating, and the specific structure and the working principle of the transducer in the first embodiment in the embodiment of the utility model are explained in detail below.

As shown in fig. 1 to 7, the second embodiment is a dynamic magnetic bone conduction scheme, and the electromagnetic assembly 320 includes:

a magnetic steel structure 321 connected to the vibration plate 310;

a coil 322 connected to the inner wall of the housing 100, wherein a gap is formed between the magnetic steel structure 321 and the coil 322 (i.e. the magnetic steel structure 321 hovers above the coil 322 through the connected vibration plate 310), and the coil 322 is disposed opposite to the magnetic steel structure 321;

the electromagnetic assembly 320 generates a varying magnetic field by the coil and the magnetic steel structure when receiving the audio signal, so that the audio signal is converted into the audio vibration of the magnetic steel structure 321 and is conducted to the central area (i.e. the vibration area portion 311 in fig. 7) of the vibration plate 310.

It should be noted that, in this embodiment, the coil 322 is fixed on the inner wall of the housing 100, the magnetic steel structure 321 and the vibration plate 310 are pre-fixed to form a vibration component (note that the vibration component is different from the electromagnetic component), when an audio signal is input, the magnetic steel structure 321 is driven to vibrate by a changing magnetic field generated by the magnetic steel structure 321 and the coil 322 in the electromagnetic component 320 (due to the fixation of the coil 322, the magnetic steel structure 321 is driven to vibrate by the interaction force), and the magnetic steel structure 321 transmits the vibration to the central area of the vibration plate 310, that is, the vibration along the vibration transmission axial direction, and because the central area of the vibration plate 310 vibrates in the moving gap, the vibration plate is transmitted to the edge portion (that is, the peripheral ring portion 312) through the connection portion (that is, the vibration support arm 313) of the vibration plate 310, and the audio vibration is transmitted to the hard front shell 200 through the housing 100.

In this embodiment, as shown in fig. 2, 3 or 4, the housing 100 includes: a bottom case 110; a middle case 120 connected to the bottom case 110; the supporting structure 130 is connected to the bottom case 110 and abuts against the peripheral ring 312. It should be noted that, the bottom shell 110, the middle shell 120 and the supporting structure 130 may be configured as an integral structure, i.e. a complete structural member, or may be configured in a detachable manner (as shown in fig. 2), specifically configured according to the definition of the assembly process and the actual requirements, which is not limited herein.

Specifically, as shown in fig. 2 or fig. 3, the vibration plate 310 is abutted against the upper end surface of the supporting structure 130 (i.e. the vibration plate is pressed against the supporting structure) by the hard front case 200, the coil 322 is connected to the inner wall of the bottom case 110, and a gap is formed between the magnetic steel structure 321 and the coil 322 (i.e. there is no physical contact between the two) so that the magnetic steel structure 321 and the vibration plate 310 vibrate.

In this embodiment, as shown in fig. 2 or fig. 7, a first positioning column 131 is disposed on a side of the support structure 130 facing the front shell (i.e. the hard front shell), and first positioning holes 3121 are disposed on two sides of the peripheral ring portion 312 (i.e. front and rear sides of fig. 7), respectively, and the first positioning column 131 is cooperatively connected with the first positioning holes 3121.

Specifically, two holes (i.e. first positioning holes 3121) are respectively formed on two sides of the peripheral ring portion 312, and two columns (i.e. first positioning columns 131) are respectively formed on two sides (front and rear sides) of the upper end of the supporting structure 130; however, the first positioning hole may not be provided on the peripheral ring portion 312. The fixed area around the vibration plate 310 is limited by the supporting structure 130 or by the hard front case 200.

Further, both ends of the hollow adhesive layer 210 are respectively covered and connected by the inner wall of the circumference side of the hard front case 200 and the circumference ring portion 312, so that the hollow portion of the hollow adhesive layer 210 becomes all or part of the movement gap (reserved space) (at this time, a groove may be formed inside the hard front case 200, further enlarging the movement gap space formed with the hollow adhesive layer 210). Further, two holes are respectively formed on the front and rear sides of the hollow adhesive layer 210, so that the first positioning posts 131 pass through the first positioning holes and the holes on the hollow adhesive layer 210.

In this embodiment, as shown in fig. 2 or fig. 3, the magnetic steel structure 321 includes: the first magnetic steel (namely, a magnet) is connected with the central area 311 of the vibration piece or connected with the central area of the vibration piece through a magnetic steel structure 321; the coil 322 is provided with the fixing element 3222 on a side facing away from the first magnetic steel, and the support structure 130 is connected to the bottom case 110 via (i.e., passes through) the fixing element 3222. It should be noted that the magnetic steel structure may be directly fixed on the central area; or the magnetic steel structure is arranged in the U-shaped magnetic steel structure, and the bottom of the U-shaped magnetic steel structure is fixed on the central area, so that the magnetic force lines near the surface of the magnetic steel, which faces the outside of the coil 322, can be partially isolated, the influence of an external magnetic field on the electromagnetic assembly 320 is avoided, and the influence of the magnetic steel field on the external environment is reduced.

Specifically, as shown in fig. 5 or fig. 6, the first magnetic steel is fixedly connected to the inner wall of the bottom shell 110 through a fixing piece 3222, the fixing piece 3222 is in a shape of a vehicle bottom plate and is matched with a limit groove at the lower end of the supporting structure 130, and a mounting groove arranged above the supporting structure 130 is matched with the magnetic steel structure 321, so that the coil 322 is fixed on the bottom shell 110 through the supporting structure 130, the magnetic steel structure 321 is kept in a setting state opposite to the coil 322, and the accuracy of interaction force generated by a generated variable magnetic field is ensured when an audio signal is introduced, so that the accuracy of vibration conduction is ensured, the leakage of a transducer is prevented, and the vibration conduction efficiency is improved. It should be noted that, as shown in fig. 6 or fig. 10, the limiting groove at the lower end of the corresponding supporting structure 130 is adapted to the fixing member.

Further, as shown in fig. 1 or fig. 6, a second positioning post 132 is disposed on a side of the support structure 130 facing away from the hard front shell 200, second positioning holes are respectively disposed on four sides of the fixing member 3222, and the second positioning post 132 is cooperatively connected with the second positioning holes. The inner wall of the bottom shell 110 is provided with matching holes corresponding to the second positioning columns 132 one by one, so that the fixing piece and the magnetic steel structure are conveniently fixed on the bottom shell 110.

In a preferred embodiment of the present utility model, further comprising: at least one second magnetic steel (not shown) is inserted in the coil 322 and fixed on the upper end surface of the fixing piece 3222, and is disposed opposite to the first magnetic steel.

Specifically, the coil 322 has a hollow portion inside, so that one or more second magnetic steels (i.e., magnets) are disposed in the hollow portion of the coil 322, that is, the second magnetic steels are pre-fixed in the hollow portion of the coil 322 by surface mounting or embedding, and are located on the upper end surface of the fixing member 3222. Further, the coil 322 is fixed on the supporting structure 130 and the bottom case 110, the magnetic steel structure 321 is fixed on the vibration plate 310, the second magnetic steel is fixed on the hollow portion inside the coil 322 and the fixing member 3222, and the peripheral ring portion 312 of the vibration plate 310 is hard-connected or connected to the edge (i.e. side) of the hard front case 200 through the hollow adhesive layer 210.

It should be noted that, in this embodiment, the second magnetic steel is disposed in the hollow portion of the coil 322 on the upper end surface of the fixing member 3222, that is, the second magnetic steel is located in the hollow portion of the coil 322, so that when no audio signal is introduced, the second magnetic steel (indirectly connected to the bottom shell) and the first magnetic steel generate a preset magnetic field (the magnetic field generates an interaction force between the coil 322 integrally fixed with the second magnetic steel and the first magnetic steel), and when an audio signal is introduced, the magnetic steel structure 321 (i.e., the first magnetic steel) and the magnetic field generated by the coil 322 generate vibration under the action of the preset magnetic field, so that the converted audio vibration is more conveniently conducted to the hard front shell 200 through the vibration support arm 313, the peripheral ring portion 312 and the shell 100, thereby improving the conduction efficiency. The second magnetic steel can be arranged in a plurality, and the second magnetic steel is arranged in the middle space of the coil.

The bottom shell 110 is provided with a clamping groove (not marked in the figure); the middle case 120 connects the bottom case 110 and the hard front 200; the middle shell 120 is provided with a hook (not shown) that mates with the slot, as shown in fig. 2 or fig. 1. It should be noted that, in the present embodiment, the bottom case 110 is provided with a clamping groove 112 for corresponding hooks on the middle case 120; but not limited to, the clamping groove can be arranged on the middle shell, and the corresponding clamping hook can be arranged on the bottom shell.

In the dynamic magnetic scheme, one of the functions of the hollow adhesive layer 210 is to separate the vibration area 311 and the peripheral ring 312 from the middle part of the inner wall of the hard front shell 200, so as to generate a movable gap, and leave a vibration space for the vibration area 311. Dynamic magnetic scheme vibration transmission path: the magnetic steel structure (namely, a magnet), a vibration surface area part, a vibration supporting arm, a peripheral ring part, a first positioning hole, a supporting structure, a middle shell, a shell and a hard front shell.

In the second embodiment, the connection manner and the operation principle of the hard front case 200, the transducer 300 (the vibration plate 310, the magnetic steel structure 321, the coil 322) and the case of the present utility model are as follows:

the edge of the vibration plate 310 (i.e., the peripheral ring portion 312) is adhered to the annular end portion of the hard front case 200 by means of a double-sided adhesive tape (i.e., a hollow adhesive layer 210 described below) adhered from the inside of the hard front case 200; a vibration support arm 313 which is bent from the end of the area to the center of the two sides of the periphery is arranged between the peripheral ring part 312 and the middle area part 311 of the vibration plate 310, and the two ends of the vibration plate 310 are in a piece structure with a semicircular radian (namely, are in a flat key shape); the coil 322 of the transducer 300 is fixed to the inside of the bottom shell 110 through a fixing piece 3222, a preset vibration gap (the height of the vibration gap is recorded as h 1) is formed between the magnetic steel structure 321 and the coil 322 in a suspending mode, the vibration gap is arranged in the pre-forming matched transducer supporting structure 130, positioning columns are respectively arranged at two ends of the supporting structure 130, one side of the supporting structure supports the vibrating piece 310 upwards, the other side of the supporting structure is fixedly connected with the hole wall around the fixing piece 3222 downwards, and the supporting structure is fixed into the bottom shell 110 downwards. The vibration amplitude of the vibration area portion 311 is in the range of a movable gap (the height of the movable gap is denoted as h 2) formed between the hard front case 200 and the vibration plate 310, for example, 0.30 mm to 1.00 mm (the movable gap can be seen in fig. 4, the height of the movable gap can be set to be 0.30 mm to 1.00 mm, but is not limited to this height), so as to prevent the vibration area portion 311 from directly touching the hard front case 200, and the vibration area portion 311 transmits the audio vibration to the peripheral ring portion 312 through the vibration support arm 313, further transmits to the peripheral fastening structure, and then drives the boss of the hard front case 200 to perform vibration transmission. In the second embodiment, the coil 322 is fixed to the bottom of the cavity (i.e., the mounting groove) of the support structure 130 or directly above the bottom case 110 by the fixing members 3222; the magnetic steel structure 321 and the vibration plate 310 are originally a pre-bonded assembly (namely, a dynamic magnetic pre-assembly magnetic steel assembly, the magnetic steel structure 321 is matched with the vibration plate 310), and are fixed on a boss with matched appearance extending out of the inner wall of the supporting structure 130 through positioning holes at two sides and a peripheral ring part 312; the peripheral ring part 312 of the vibration piece 310 faces the skin side of the wearer, is attached with a double-sided adhesive tape (namely a hollow adhesive layer 210) matched with the shape of the peripheral ring part 312, and then is arranged on the bottom end surface of the hard front shell 200 to form a movable magnetic front cover assembly (a magnetic steel structure 321, the vibration piece 310, the hollow adhesive layer 210 and the hard front shell 200); in the moving magnet front cover assembly, the vibrating piece 310 is bonded with the hard front shell 200 through a hollow adhesive layer, a movable gap is generated between the vibrating piece 310 and the hard front shell 200, and the movable gap absorbs vibration of the vibration surface area 311 and the vibration support arm 313 when the finished earphone works, so that the vibrating surface area is prevented from contacting and colliding with the inner side wall of the hard front shell 200; the coil 322 is fixedly abutted to the bottom shell 110 through the supporting structure 130, the middle shell 120 is adhered to the bottom shell 110 through a buckle and a positioning column and assisted by glue, so that a movable magnetic rear cover assembly (the bottom shell 110, the middle shell 120, the coil 322 (the first coil 3221 and the fixing piece 3222) and the supporting structure 130) is formed; the dynamic magnet front cover component is bonded with the dynamic magnet rear cover component into a whole through the preset adhesive materials (including bonding glue and double-sided bonding glue) in the annular concave glue groove 121 at the upper part of the middle shell 120, namely a complete earphone is bonded; in the assembled earphone, an air gap is reserved between the coil 322 and the magnetic steel structure 321, and the vibration of the magnetic steel structure 321 is absorbed when the finished earphone works. In the second embodiment, when the earphone is operated in the audio frequency full-frequency range (e.g., 20Hz to 20000 Hz) under the condition of setting the maximum sound volume, the vibration surface area 311, the vibration support arm 313 and the magnetic steel structure 321 cannot collide with other structures and components when vibrating.

In another embodiment, the vibrating members (vibrating piece 310 and coil 321) may be provided separately, or at least one air conduction transducer (including moving coil horn, MEMS horn) may be connected in parallel and/or in series.

In one embodiment, the side ends of the center housing (i.e., the sides of housing 120 in FIG. 1) are provided with at least one sound guiding aperture that is oriented toward the wearer's ear canal opening so that sound waves generated by transducer 300, and/or sound waves generated by parallel air conducting transducers, will propagate through the sound guiding aperture toward the wearer's ear canal opening.

In one embodiment, the side end of the center housing (i.e., the side of housing 120 in fig. 1) is provided with at least one sound guiding aperture that is not oriented toward the other side of the wearer's ear canal opening to adjust the acoustic characteristics within the earpiece. In the embodiment, a plurality of sound guide holes are adopted, and the sound guide holes facing the auditory meatus are designed to mainly transmit sound waves; the sound guide holes, which are not oriented towards the ear canal opening, are designed to regulate the sound pressure in the earpiece of the earphone, including other acoustic characteristics.

In a first embodiment (i.e. a moving coil solution), as shown in fig. 8 to 10, the bone conduction headset comprises: a housing 100; a front case connected to the case 100, and a chamber is formed in the case and the front case; a transducer 300, the transducer 300 being disposed within the chamber;

The transducer 300 comprises: an electromagnetic assembly 320 for converting an audio signal into an audio vibration of a coil 521 in said electromagnetic assembly 320; the vibration plate 310 is connected to the coil 521, and the vibration area 311 of the vibration plate 310 is connected to the front case via a vibration transmission member 211 (having a hard and lightweight property), and the vibration plate 310 is hollowed out so that the audio vibration of the electromagnetic component is transmitted to the vibration transmission member 211 via the center area (i.e., the vibration area 311) of the vibration plate 310 and further transmitted to the front case.

Specifically, the front shell is a soft front shell 201, and the central area of the vibration plate 310 is connected with the inner wall of the middle part of the soft front shell 201, so that the audio vibration of the electromagnetic assembly is conducted to the middle part of the soft front shell through the central area of the vibration plate.

In another embodiment, referring to fig. 9 and 12, the vibration area portion 311 has a protruding portion on a side near the soft front shell 201, and the protruding portion is connected to the inner wall of the middle portion of the soft front shell 201. Specifically, the vibration plate 310 may be configured as a planar structure (i.e. the above embodiment), or may be shaped, such as a central region (i.e. the vibration area portion 311) is shaped to be convex (i.e. a convex portion) facing the skin direction of the wearer, so that the vibration is conducted to the soft front case 201 through the central region and the convex portion of the vibration plate 310.

In another embodiment, a hole is formed in the central area (i.e. the vibration area portion 311) of the vibration plate 310, and a vibration transmission member (such as PC, ABS, PC +abs, siren, nylon, hardware, glass fiber) with a positioning post matching with the hole of the vibration plate is added, one side of the vibration transmission member with the positioning post is adhered to the central area of the vibration plate 310, and the other side is adhered to the inner side of the soft front shell 201 to transmit vibration.

In another embodiment, referring to fig. 15 and fig. 16, a vibration transmission member with a concave shape matching with the convex limiting structure is added on the periphery of the central region (i.e. the vibration area portion 311) of the vibration plate 310 and toward the skin of the wearer; or a concave part limiting structure is arranged on the periphery of the central area of the vibrating piece 310 towards the skin direction of the wearer, and a vibration transmission piece matched with the concave part limiting structure and protruding is additionally arranged.

In another embodiment, referring to fig. 13 and 14, a vibration transmission member with a limit structure matching with the edge feature is added by utilizing the edge feature around the central region (i.e. the vibration area portion 311) of the vibration plate 310.

In the first embodiment, the first magnetic steel 5221 is fixed on the fixing member 5222 to form a magnetic steel structure 522, the magnetic steel structure 522 is mounted and fixed on the bottom shell 110 in an abutting manner through the supporting structure 130, the middle shell 120 is bonded on the bottom shell 110 through a buckle and a positioning column with the assistance of glue to form a moving coil magnetic steel rear cover assembly (including the bottom shell 110, the middle shell 120, the supporting structure 130, the first magnetic steel 5221 and the fixing member 5222); the coil 521 and the vibrating piece 310 are originally a pre-bonded component, namely a moving coil pre-assembled coil component (including the coil 521 and the vibrating piece 310); the moving coil pre-assembled coil assembly is connected with the soft front shell 201 through the vibration transmission piece 211 to form a moving coil front cover assembly (comprising a coil 521, a vibrating piece 310, the vibration transmission piece 211 and the soft front shell 201); in the moving coil front cover assembly, the vibrating piece 310 is bonded with the soft front shell 201 through the vibration transmission piece 211, a movable gap is generated between the vibrating piece 310 and the soft front shell 201, and the movable gap absorbs the vibration of the vibration support arm 313 when the finished earphone works, so that the vibration support arm is prevented from contacting and colliding with the inner side wall of the soft front shell 201; the moving-coil front cover assembly is bonded with the moving-coil rear cover assembly into a whole through a preset adhesive material (including bonding glue and double-sided bonding glue) in an annular concave glue groove 121 at the upper part of the middle shell 120, namely, a complete earphone is bonded; in the assembled earphone, an air gap is reserved between the coil 521 and the first magnetic steel 5221, so that vibration of the coil 521 is absorbed when the finished earphone works.

As shown in fig. 8, the electromagnetic assembly 320 includes: a coil 521 connected to the vibrating reed 310; the magnetic steel structure 522 is connected with the inner wall of the casing 100, a gap is formed between the magnetic steel structure 522 and the coil 521 (i.e. the coil 521 is suspended above the magnetic steel structure 522 by the connected vibration plate 310), and the magnetic steel structure 522 is arranged opposite to the coil 521;

When the electromagnetic component 320 receives an audio signal, the coil 521 and the magnetic steel structure 522 act to generate a varying magnetic field, so that the audio signal is converted into audio vibration of the coil 521 and is conducted to the central area (i.e. the vibration area portion 311) of the vibration plate 310.

Specifically, the vibration plate 310 includes: a vibration area 311 connected to the coil 521; zhou Bianjuan part 312 connecting the case 100 and the soft front case 201; a vibration support arm 313 (curved, flat spring) connects the vibration surface area 311 and the peripheral ring 312.

Further, the earphone further includes: a vibration transmission member 211 connecting the middle portion of the inner wall of the soft front case 201 and the central area portion (i.e., the vibration area portion 311) of the vibration plate 310;

an abutting part is arranged on one side of the soft front shell 201 close to the vibration piece 310, and the middle part of the inner wall of the soft front shell 201 is connected with the central area of the vibration piece through the abutting part; and/or

The vibrating piece 310 has a protruding portion on a side close to the soft front case 201, and the protruding portion is connected to the middle portion of the inner wall of the soft front case.

Specifically, in the moving coil scheme, the connection rigidity of the vibration supporting arm 313 is weaker than that in the moving magnet scheme, and the vibration transmission path thereof is: the vibration area part 311 is the middle part of the inner wall of the soft front shell 201 and the middle part of the outer wall of the soft front shell 201; the vibration surface area 311, the vibration support arm 313 and the peripheral ring 312 are located on the same plane, the vibration support arm 313 needs to be suspended, and the vibration support arm is not contacted with other components up and down. At this time, the periphery of the soft front case 201 presses the Zhou Bianjuan part 312 (the soft front case may also use internal rubber-coated hardware to strengthen the periphery to press the Zhou Bianjuan part, as shown in fig. 11).

Therefore, optionally, the vibration supporting arm 313 is separated from the soft front shell 201 by a gap on the premise of retaining the hollow adhesive layer 210 in the dynamic magnetic scheme, or the annular end surface of the soft front shell 201 connected with the middle shell 120 is connected with the middle shell 120 after being enlarged in the axial direction, so as to enlarge the gap between the inner wall of the soft front shell 201 and the vibration supporting arm 313.

As shown in fig. 8, the magnetic steel structure 522 includes a first magnetic steel 5221 and a fixing member 5222, wherein the first magnetic steel 5221 is fixed on the fixing member 5222 and faces the coil 521; and/or;

the first magnetic steel 5221 is provided with a fixing member 5222 at a side facing away from the coil 521, and the support structure 130 is connected to the housing 100 through the fixing member 5222.

In a first embodiment, further comprising: at least one second magnetic steel (second magnetic steel) is inserted into the coil 521, and is fixed to the vibration surface area 311 of the vibration plate 310, facing the first magnetic steel 5221, and disposed opposite to the first magnetic steel 5221.

The first embodiment is different from the second embodiment in the following points:

the first and front shells are different in material characteristics; in the first embodiment, the front case is provided as a soft front case 201, and in the second embodiment, the front case is provided as a hard front case 200;

The second, magnetic steel and coil set up relative position and fixed mode are different; in the first embodiment, the coil 521 is fixed on the vibration area 311 of the vibration plate 310, the first magnetic steel 5221 is disposed on the fixing member 5222 and is fixed on the bottom case 110 by the fixing member 5222, and at this time, the coil 521 drives the vibration area 311 to vibrate mainly; in the second embodiment, the first coil 3221 is disposed on the fixing member 3222 and is fixed on the bottom shell 110 by the fixing member 3222, the magnetic steel is disposed in the magnetic steel structure 321, and the magnetic steel structure 321 is fixed on the vibration area portion 311 of the vibration piece 310, and at this time, the magnetic steel structure 321 drives the vibration area portion 311 to vibrate mainly;

third, the connection mode of the front case and the vibration plate 310 is different; in the first embodiment, the vibration area portion 311 of the vibration plate 310 is connected to the middle part of the inner wall of the soft front case 201 through the vibration transmission member 211, or a protrusion portion is provided on one side of the vibration area portion 311 facing the soft front case 201 and/or a protrusion portion is provided on the middle part of the inner wall of the soft front case 201, and is adhered to the soft front case 201, and a gap is formed between the vibration support arm 313 and the inner wall of the soft front case, and in the second embodiment, the peripheral ring portion 312 of the vibration plate 310 is adhered to the annular end surface of the bottom of the hard front case 200 through the hollow adhesive layer 210, and a gap is formed between the vibration support arm 313, the vibration area portion 311 and the inner wall of the hard front case 200;

Fourth, the intensity arrangement of the vibration supporting arms 313 is different; the vibration energy of the first embodiment is smaller than that of the second embodiment, in which the primary function of the vibration support arm 313 is to set the position of the coil 521, and in the second embodiment, the primary function of the vibration support arm 313 is to transmit the vibration of the vibration surface area portion 311 to the peripheral ring portion 312, and therefore, the strength arrangement of the vibration support arm 313 in the first embodiment is weaker than that in the second embodiment;

fifth, vibration transmission paths are different; in the first embodiment, the vibration transmission path: coil 521-vibration area 311-vibration transmission member 211-inner wall middle of soft front case 201-outer wall middle of soft front case 201-skin of wearer, in the second embodiment, vibration transmission path: the magnetic steel structure 321, the vibration surface area 311, the vibration supporting arm 313, the peripheral ring 312, the outer shell 100, the hard front shell 200 and the skin of a wearer;

the first embodiment has the same points as the second embodiment, and has the same points as the first embodiment except for the structural points: in the first embodiment, at least one magnetic steel may be disposed in the hollow position of the coil 521 and fixed to the vibration surface area 311 of the vibration plate 310, opposite to the first magnetic steel 5221; in the second embodiment, at least one magnetic steel may be disposed in the hollow position of the first coil 3221 and fixed on the fixing member 3222, opposite to the magnetic steel structure 321.

In both cases, the support structure 130 may be designed as a unitary structure with the middle case 120, and further, the support structure 130, the middle case 120, and the bottom case 110 are designed as one unitary structure.

In the first embodiment (moving coil), the presence of a separate support structure 130 is hardly required. At this time, the presence of the support structure 130 causes an increase in volume and complicated assembly. When the support structure 130 is designed as a single integral structure in cooperation with the middle shell 120, or the support structure 130, the middle shell 120 and the bottom shell 110 are designed as a single integral structure, positioning posts opposite to the positioning holes of the Zhou Bianjuan part 312 are reserved on the integral structure, and the soft front shell 201 of the embedded support 500 is adhered to the annular concave glue groove 121 at the top of the middle shell 120 and presses the peripheral ring part 312. Note that this approach differs from the soft front shell 201 of the in-line support 500 described below being connected to the support structure 130.

In the first embodiment, as shown in fig. 11, a supporting member 500 is embedded in the soft front shell 201, a corner surface is provided on one side of the soft front shell 201 close to the bottom shell, the cross section of the supporting member 500 is L-shaped, and two sides of the supporting member 500 are respectively connected to the joint surface and the corner surface. The corner surface of the soft front shell 201 is in a Z shape which rotates anticlockwise by 70-120 degrees, the inner surface of the supporting piece 500 is a right-angle surface or an inclined angle surface, one end surface of the supporting piece 500 is connected with the corner surface of the soft front shell 201, the other end surface of the supporting piece 500 is embedded in the groove outer ring of the soft front shell 201, the rear surface of the outer surface of the supporting piece 500 is connected with the annular concave glue groove at the upper part of the middle shell 120 through glue, the inner surface of the outer surface of the supporting piece 500 faces the inner part of the cavity, the side wall of the soft front shell 201 is effectively supported through the supporting piece 500, the connection strength between the soft front shell 201 and the shell 100 is improved, and the transmission efficiency of bone conduction vibration is improved. It should be noted that the metal component (i.e., the support 500) is embedded in the bottom end surface of the soft front case 201 by using a two-shot molding encapsulation process.

Based on the above embodiment, the present utility model further provides a bone conduction earphone, and the transducer fixing device with a vibration support arm according to any of the above embodiments has all the above advantages, which are not described herein.

It is to be understood that the utility model is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.

Claims

1. A transducer mount having a vibration support arm, comprising:

a housing;

a front shell connected with the shell;

a transducer connected to the front housing;

the transducer includes:

an electromagnetic assembly connected to the housing;

a vibration plate connected with the electromagnetic component, and the edge of the vibration plate is connected with the front shell;

and the adhesive layer is connected with the inner wall of the front shell and the vibration piece so that the audio vibration of the electromagnetic assembly is conducted to the front shell through the edge of the vibration piece.

2. The transducer mount with vibration support arm of claim 1, wherein the front shell is a soft front shell, the central area of the vibration plate being connected to the middle of the soft front shell;

The rubber layer is a vibration transmission piece, and the vibration transmission piece is connected with the middle part of the soft front shell and the central area of the vibration piece.

3. The transducer mount with a vibration support arm according to claim 1, wherein the front case is a hard front case, a movable gap inside the adhesive layer is formed between an inner wall of a middle region of the hard front case facing the vibration plate and a central region of the vibration plate, and a peripheral ring portion of the vibration plate is connected to the hard front case;

the glue layer is a hollow glue layer, and the hollow glue layer is connected with the inner wall of the hard front shell and the edge of the vibrating piece.

4. A transducer mount having a vibration support arm according to claim 3, wherein a peripheral loop portion of the vibration plate connects the case and the hard front case;

the vibrating piece further includes:

a vibration area part connected with the electromagnetic assembly;

and the vibration support arm is connected with the vibration surface area part and the peripheral ring part and can vibrate in the movable gap.

5. The transducer fixture having a vibration support arm of claim 4, wherein the electromagnetic assembly comprises:

The magnetic steel structure is connected with the vibration surface area part;

the coil is connected with the inner wall of the shell and is arranged opposite to the magnetic steel structure;

when the electromagnetic assembly receives an audio signal, the coil and the magnetic steel structure act to generate a magnetic field, so that the audio signal is converted into audio vibration of the magnetic steel structure and is conducted to the central area of the vibration piece.

6. The transducer mount having a vibration support arm of claim 5, wherein a side of the rigid front shell facing away from the housing is provided with a silicone layer for contact with the skin of the wearer; the housing includes:

a bottom case;

the middle shell is connected with the bottom shell;

the supporting structure is connected with the bottom shell and is abutted with the peripheral ring part; and/or

7. The transducer fixture having a vibration support arm of claim 6, wherein the magnetic steel structure comprises:

the first magnetic steel is connected with the central area of the vibration piece; and/or

One side of the coil, which is away from the first magnetic steel, is provided with a fixing piece, and the fixing piece is connected with the shell.

8. The transducer fixture having a vibration support arm of claim 7, further comprising:

at least one second magnetic steel is plugged in the coil and is arranged opposite to the first magnetic steel.

9. The transducer mount having a vibration support arm of claim 7, wherein a first positioning post is provided on a side of the support structure facing the front case, and first positioning holes are provided on both sides of the peripheral ring portion, respectively, and the first positioning post is cooperatively connected with the first positioning holes; and/or

10. The transducer fixture having a vibration support arm of claim 2, wherein the electromagnetic assembly comprises:

a coil connected to the vibrating reed;

the magnetic steel structure is connected with the inner wall of the shell and is arranged opposite to the coil;

when the electromagnetic assembly receives an audio signal, the coil and the magnetic steel structure act to generate a magnetic field, so that the audio signal is converted into audio vibration of the coil and is conducted to the central area of the vibration piece.