CN217116340U - Bone conduction earphone with split formula oscillator - Google Patents

Abstract

The utility model provides a bone conduction earphone with a split vibrator, which comprises an upper shell and a lower shell which are oppositely arranged and covered; the cavity is enclosed by the upper shell and the lower shell which are oppositely covered; the hollow elastic sheet is embedded into the cavity and comprises an inner elastic sheet, an outer elastic sheet sleeved outside the inner elastic sheet and a plurality of connecting elastic sheets connected between the elastic sheets and the outer elastic sheet; the exciter comprises an upper magnetic part, a lower magnetic part and an upper magnetic bowl connected between the upper magnetic part and the hollowed-out elastic sheet, wherein the upper magnetic part and the lower magnetic part are parallel to each other in the vertical direction, a gap is formed between the upper magnetic part and the hollowed-out elastic sheet, and the inner elastic sheet is connected with the upper magnetic bowl; further comprising: the fixing column is arranged on the face, facing each other, of the lower shell and the upper shell, at least one fixing hole is formed in the hollowed-out elastic sheet, and the fixing holes and the fixing columns are embedded in a one-to-one correspondence mode. The utility model discloses can avoid the fretwork shell fragment to appear rocking and produce the noise when the bone conduction oscillator vibrates.

Description

Bone conduction earphone with split formula oscillator

Technical Field

The utility model relates to a technical field of bone conduction earphone mainly relates to a bone conduction earphone with split formula oscillator.

Background

The existing bone conduction vibrator comprises a bone conduction vibrator and a fixing part arranged on the bone conduction vibrator, wherein the bone conduction vibrator comprises a metal sheet, two end faces of the metal sheet are respectively attached with a piezoelectric ceramic piece, the polarities of the piezoelectric ceramic pieces are opposite, and the surface of the piezoelectric ceramic piece is provided with a plastic layer; the area of the contact surface of the metal sheet and the piezoelectric ceramic sheet is smaller than that of the metal sheet; the fixed part comprises a connecting piece and a supporting seat, the connecting piece and the supporting seat are detachably connected, and the connecting piece is fixedly arranged on the metal sheet.

In the actual use process of the bone conduction vibrator, the problem of sound leakage exists, and the use experience of a user is reduced. In order to solve the problem of sound leakage, the applicant has developed a bone conduction vibrator structure (a bone conduction sound-generating device and a wearable device with application number of CN 202110507400.1) for overcoming the problem of sound leakage in cooperation with suzhou cable electronic technology limited, wherein the bone conduction sound-generating device comprises a housing, a hollow cavity is arranged in the housing, and a bone conduction sound-generating device is arranged in the hollow cavity: the hollow elastic piece comprises an inner elastic piece, an outer elastic piece sleeved outside the inner elastic piece and a plurality of connecting elastic pieces connected between the inner elastic piece and the outer elastic piece, and the outer elastic piece is embedded on the shell; the exciter comprises an upper magnetic part, a lower magnetic part and an upper magnetic bowl connected between the upper magnetic part and the hollowed-out elastic sheet, wherein the upper magnetic part and the lower magnetic part are opposite in parallel in the Z-axis direction and are arranged in an isolated manner; the inner elastic sheet is connected to the upper magnetic bowl of the exciter, and the hollow elastic sheet and the upper magnetic bowl are matched to adjust the effective vibration area of the hollow elastic sheet so as to adjust the resonance frequency point of the device. Install bone conduction sound generating mechanism's wearable equipment, but transmission low frequency signal and transmission amplitude are moderate, and balanced whole sound audio frequency section promotes user experience and product tone quality.

Although a bone conduction vibrator structure for overcoming the problem of sound leakage is provided through CN202110507400.1, in the using process, it is found that the hollow elastic sheet cannot be accurately fixed in the cavity of the shell, and in this case, noise is easy to occur in the vibration process of the bone conduction vibrator, so that the use experience of a user is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bone conduction earphone with split formula oscillator can ensure that the fretwork shell fragment can not appear reducing the noise the condition of rocking in the cavity of casing when the bone conduction oscillator vibrates, and then promotes user's use and experiences.

To this end, a bone conduction headset with a split transducer is provided, comprising:

an upper shell and a lower shell which are oppositely covered up and down;

the cavity is enclosed by the upper shell and the lower shell which are oppositely covered;

the hollow elastic sheet is placed in the cavity and comprises an inner elastic sheet, an outer elastic sheet sleeved outside the inner elastic sheet and a plurality of connecting elastic sheets connected between the inner elastic sheet and the outer elastic sheet;

the exciter comprises an upper magnetic part, a lower magnetic part and an upper magnetic bowl connected between the upper magnetic part and the hollowed-out elastic sheet, the upper magnetic part is placed into the upper magnetic bowl, the hollowed-out elastic sheet is far away from an opening of the upper magnetic bowl, the upper magnetic part and the lower magnetic part are parallel to each other in the vertical direction, a gap is formed between the upper magnetic part and the lower magnetic part, and the inner elastic sheet is connected with the upper magnetic bowl.

The structure of the outer elastic sheet is similar to that of one group of symmetrical edges A of the outer elastic sheet, the supports are vertically opposite to the edges A, the fixing columns are arranged on the other group of symmetrical edges B of the outer elastic sheet, the fixing columns are vertically opposite to the edges B, and the outer elastic sheet is tightly pressed in the inner cavity of the upper shell by the supports and the fixing columns.

Furthermore, the outer elastic sheet is adhered to the bottom surface of the inner cavity of the upper shell through a back adhesive layer.

Furthermore, the structure of the back glue layer is similar to that of the outer elastic sheet, and the back glue layer and the outer elastic sheet are oppositely attached.

Further, the bottom surface of the inner cavity of the upper shell is provided with a plurality of positioning columns and is symmetrically arranged beside the upper magnetic bowl one by one, the end face of the support far away from the upper magnetic bowl is provided with at least two grooves, under the condition that the support is embedded between the upper magnetic bowl and the inner wall of the upper shell, the grooves correspond to the positioning columns one by one and are embedded into the grooves, so that the support and the inner cavity of the upper shell are clamped.

Further, still including setting gradually circuit board, insulation board, the coil at the lower casing inner chamber, the coil sets up the top surface of insulation board, the middle part of magnetic part embedding coil is fixed down on the insulation board, the insulation board erects the top of circuit board, the coil is connected with the circuit board electricity.

Furthermore, two copper columns are welded on an output pin and an input pin of the circuit board respectively, in the vertical direction, the copper columns are arranged beside the coil and are parallel to the top surface of the copper column and the top surface of the coil, and two ends of the coil are welded on the top surfaces of the two copper columns respectively.

Further, the circuit board is fixed with the bottom surface of the inner cavity of the lower shell through threads.

Furthermore, a fixing protrusion is arranged at the joint of the lower shell and the upper shell, a fixing groove for embedding the fixing column is formed in the fixing protrusion, an upper magnetic part, an upper magnetic bowl, a support and a hollow elastic sheet which are assembled with the upper shell are embedded into the inner cavity of the lower shell under the condition that the upper shell and the lower shell are vertically opposite, the upper magnetic part and the lower magnetic part are parallel to each other in the vertical direction and have a gap therebetween, and the fixing column and the fixing groove are embedded in a one-to-one correspondence manner to form a complete bone conduction earphone.

Furthermore, glue is arranged at the joint of the fixing protrusion and the outer elastic sheet.

Furthermore, the top surface of the fixing protrusion is higher than that of the lower shell, and under the condition that the upper shell and the lower shell are opposite up and down, the fixing protrusion is embedded into the inner cavity of the upper shell and abuts against the outer elastic sheet.

The utility model provides a bone conduction earphone with split formula oscillator through be provided with the fixed orifices on the fretwork spring, is provided with the fixed column in the cavity, places under the condition of cavity at the fretwork spring, the fixed orifices and the fixed column one-to-one embedding of fretwork spring, the fixed column with there is glue in the clearance mid point between the fixed orifices for the fretwork spring can not appear the condition of rocking when the bone conduction oscillator vibrates, and then reduces the noise, has promoted user's use and has experienced.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the contents of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following description will particularly refer to specific embodiments of the present invention.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic diagram of the overall structure of the bone conduction earphone with the split vibrator of the present invention;

fig. 2 is a schematic diagram of a connection structure of each bone conduction earphone with a split vibrator according to the present invention;

fig. 3 is a schematic structural diagram of the bone conduction earphone with the split vibrator of the present invention after the lower housing is opened;

fig. 4 is a schematic view of another view angle of fig. 3.

Reference numerals are as follows: 1-an upper shell; 2-a lower shell; 3-hollowing out the elastic sheet; 4-upper magnetic element; 5-a lower magnetic member; 6-upper magnetic bowl; 7-a scaffold; 8-a circuit board; 9-an insulating plate; 10-a coil; 101-a back glue layer; 31-a fixation hole; 11-fixed column; 12-a positioning column; 81-copper columns; 21-fixing the projection.

Detailed Description

The invention will be further described with reference to the following examples.

Referring to fig. 1 and 2, the bone conduction earphone with a split transducer of the present embodiment includes: an upper shell and a lower shell 2 which are oppositely covered up and down; the upper shell and the lower shell 2 are oppositely covered to form the cavity; the hollow elastic sheet 3 is embedded into the cavity and comprises an inner elastic sheet, an outer elastic sheet sleeved outside the inner elastic sheet and a plurality of connecting elastic sheets connected between the inner elastic sheet and the outer elastic sheet; the exciter comprises an upper magnetic part 4, a lower magnetic part 5 and an upper magnetic bowl 6 connected between the upper magnetic part 4 and the hollowed-out elastic sheet 3, wherein the upper magnetic part 4 and the lower magnetic part 5 are parallel to each other in the vertical direction, a gap is formed between the upper magnetic part 4 and the hollowed-out elastic sheet, and the inner elastic sheet is connected with the upper magnetic bowl 6; further comprising: the fixing device comprises at least one fixing column 11, the fixing column 11 is arranged on the surface, facing each other, of the lower shell 2 and the upper shell, at least one fixing hole 31 is formed in the hollowed-out elastic sheet 3, the fixing holes 31 and the fixing columns 11 are embedded in a one-to-one correspondence mode, and glue is filled in the middle of the gap between each fixing column 11 and the corresponding fixing hole 31. Through being provided with fixed orifices 31 on the fretwork spring, be provided with fixed column 11 in the cavity, place under the condition of cavity at the fretwork spring, the fixed orifices 31 and the embedding of fixed column 11 one-to-one of fretwork spring, fixed column 11 with there is glue in the clearance midpoint between the fixed orifices 31 for the fretwork spring can not appear the condition of rocking when the bone conduction oscillator vibrates, and then reduces the noise, has promoted user's use and has experienced. The effective vibration area of fretwork shell fragment 3 and the cooperation of last magnetic bowl 6 adjustment fretwork shell fragment 3 is with adjusting device's resonance frequency point, it is specific, at the whole size of fretwork shell fragment 3, thickness, under the unchangeable condition of material, the length and width and the area of shell fragment in the change, and then the length and the area of the connection shell fragment between shell fragment and the outer shell fragment in the change, the length and the area of connecting the shell fragment are the effective vibration area of this fretwork spring promptly, thereby change the resonance frequency point F0 of system, adjust the low frequency effect in a flexible way, the resonance frequency point can reach 80Hz at least. Meanwhile, the upper magnetic bowl 6 part connected with the inner elastic sheet can also change along with the change of the length, the width and the area of the inner elastic sheet, and the change of F0 can cause amplitude change, so the whole height of the hollow elastic sheet 3 connected with the upper magnetic bowl 6 also needs to be correspondingly adjusted, the Z direction of the hollow elastic sheet 3 and the upper magnetic bowl 6 are completely connected and stacked, and the gap of the isolation area between the upper magnetic part 4 and the lower magnetic part 5 is adjusted, so that the amplitude of a sound signal transmitted by the sound generating device is moderate, meanwhile, a bass part can be synchronously transmitted to an auditory canal, the whole sound frequency section is balanced, a better acoustic effect is achieved, and the user experience and the product sound quality are remarkably improved.

See fig. 4, it is further ensured that the hollow-out elastic piece 3 does not move in the cavity, the fixing column 11 is disposed on the surface of the upper housing 1 facing the lower housing 2, the fixing hole 31 is disposed on the outer elastic piece, and the outer elastic piece is adhered to the bottom surface of the inner cavity of the upper housing 1 through the back adhesive layer 101, so that the fixing column 11 and the fixing hole 31 are relatively fixed.

The bone conduction vibrator comprises an outer elastic sheet, and is characterized by further comprising two supports 7, the structure of the supports 7 is similar to that of one group of symmetrical edges A of the outer elastic sheet, the supports 7 are vertically opposite to the edges A, fixing columns 11 are arranged on the other group of symmetrical edges B of the outer elastic sheet, the fixing columns 11 are vertically opposite to the edges B, the outer elastic sheet is tightly pressed in the inner cavity of the upper shell 1 through the supports 7 and the fixing columns 11, the outer elastic sheet can be completely pressed in the inner cavity of the upper shell 1 through the supports 7 and the fixing columns 11, the outer elastic sheet is prevented from shifting, it is further guaranteed that the initial position between the inner elastic sheet and the upper magnetic bowl 6 cannot move, vibration signals generated by vibration of the bone conduction vibrator cannot be influenced by the matching relationship between the inner elastic sheet and the upper magnetic bowl 6, and the accuracy of the bone conduction vibrator is improved.

The outer elastic sheet is adhered to the bottom surface of the inner cavity of the upper shell through the back adhesive layer 101, the back adhesive layer 101 and the outer elastic sheet are similar in structure and are oppositely attached, and under the condition that the support 7 and the fixing column 11 completely press the outer elastic sheet tightly against the inner cavity of the upper shell 1, the back adhesive layer 101 similar in structure to the outer elastic sheet is arranged to isolate the outer elastic sheet from contacting with the upper shell 1, so that the accuracy of the bone conduction vibrator is further improved.

Further guarantee that support 7 can not take place to shift, the bottom surface of going up the 1 inner chamber of casing is equipped with many reference columns 12 and the symmetry one-to-one sets up go up the side of magnetism bowl 6, support 7 is kept away from the terminal surface of going up magnetism bowl 6 and is opened the groove that has two at least under the circumstances between magnetism bowl 6 and the last 1 inner walls of casing in the support 7 embedding, the groove with reference columns 12 one-to-one and embedding and point are glued fixedly, make the inner chamber chucking of support 7 and last casing.

The hollow elastic sheet 3 is further guaranteed to be capable of achieving vibration, the hollow elastic sheet further comprises a circuit board 8, an insulation board 9 and a coil 10 which are sequentially arranged in the inner cavity of the lower shell 2, the coil 10 is arranged on the top surface of the insulation board 9, the lower magnetic part 5 is embedded into the middle of the coil 10 and fixed on the insulation board 9, the insulation board 9 is erected above the circuit board 8, and the coil 10 is electrically connected with the circuit board 8.

Referring to fig. 3, since the coil 10 has a thickness of only 0.1mm and is easily broken during the soldering process, in order to further reduce the soldering difficulty between the coil 10 and the circuit board 8, two copper pillars 81 are respectively soldered on the output pin and the input pin of the circuit board 8, and in the vertical direction, the copper pillars 81 are disposed beside the coil 10 and the top surface of the copper pillars 81 is flush with the top surface of the coil 10, so that the coil 10 and the circuit board 8 are on the same plane, thereby reducing the soldering difficulty, and two ends of the coil 10 are respectively soldered on the top surfaces of the two copper pillars 81.

Further guarantee that circuit board 8 can not take place to shift, circuit board 8 with 2 inner chamber bottom surface threaded fixation of casing down, because circuit board 8 can not take place to shift, the sound collection microphone mic that sets up on circuit board 8 can not take place to remove yet, sound collection microphone mic can come with casing 2 outside air contact down through the through-hole that sets up on casing 2 down, sound collection microphone mic is provided with the EVA layer between the through-hole on casing 2 down, the EVA layer can be solved sound collection microphone mic's sealed problem, guarantee that sound collection microphone mic can completely gather user's sound, improve speech quality.

The position of the hollowed-out elastic sheet 3 in the cavity is further guaranteed not to be changed, a fixing protrusion 21 is arranged at the joint of the lower shell 2 and the upper shell 1, a fixing groove for embedding the fixing column 11 is formed in the fixing protrusion 21, the upper magnetic part 4, the upper magnetic bowl 6, the support 7 and the hollowed-out elastic sheet 3 which are assembled with the upper shell 1 respectively are embedded into the inner cavity of the lower shell 2 under the condition that the upper shell 1 and the lower shell 2 are opposite up and down, the upper magnetic part 4 and the lower magnetic part 5 are parallel to each other in the vertical direction, gaps are formed between the upper magnetic part 4 and the lower magnetic part 5, and the fixing column 11 and the fixing groove are embedded into a whole bone conduction earphone in a one-to-one correspondence mode.

Further ensure the tight connection between the upper shell 1 and the lower shell 2, and glue is dispensed at the joint of the fixing protrusion 21 and the outer elastic sheet.

Further guarantee that fixed protrusion 21 can butt outer shell fragment, the top surface of fixed protrusion 21 is higher than the top surface of casing 2 down, under the upper and lower contraposition's of upper casing 1 and casing 2 the inner chamber butt of casing 1 is gone up to fixed protrusion 21 embedding outer shell fragment.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. A bone conduction headset with a split transducer, comprising:

an upper shell and a lower shell which are oppositely covered up and down;

the cavity is enclosed by the upper shell and the lower shell which are oppositely covered;

the hollow elastic sheet is placed in the cavity and comprises an inner elastic sheet, an outer elastic sheet sleeved outside the inner elastic sheet and a plurality of connecting elastic sheets connected between the inner elastic sheet and the outer elastic sheet;

the exciter comprises an upper magnetic part, a lower magnetic part and an upper magnetic bowl connected between the upper magnetic part and a hollowed-out elastic sheet, wherein the upper magnetic part is placed in the upper magnetic bowl, the hollowed-out elastic sheet is far away from an opening of the upper magnetic bowl, the upper magnetic part and the lower magnetic part are parallel to each other in the vertical direction, a gap is formed between the upper magnetic part and the hollowed-out elastic sheet, and the inner elastic sheet is connected with the upper magnetic bowl;

it is characterized by also comprising:

the hollow elastic piece is provided with at least one fixing hole, and the fixing holes are embedded into the fixing columns in a one-to-one correspondence mode.

2. The bone conduction earphone with the split vibrator according to claim 1, further comprising two supports, the structure of each support is similar to that of one set of symmetrical sides A of the outer elastic sheet, the supports are vertically opposite to the sides A, the fixing posts are arranged on the other set of symmetrical sides B of the outer elastic sheet, the fixing posts are vertically opposite to the sides B, and the supports and the fixing posts press the outer elastic sheet into the inner cavity of the upper shell.

3. The bone conduction earphone with the split vibrator according to claim 2, wherein the outer elastic sheet is adhered to the bottom surface of the inner cavity of the upper housing through a back adhesive layer.

4. The bone conduction earphone with the split vibrator of claim 3, wherein the back glue layer and the outer elastic sheet are similar in structure and are oppositely attached.

5. The bone conduction earphone with the split vibrator of claim 2, wherein the bottom surface of the inner cavity of the upper housing is provided with a plurality of positioning pillars and is symmetrically arranged beside the upper magnetic bowl one by one, the end surface of the support far away from the upper magnetic bowl is provided with at least two grooves, and under the condition that the support is embedded between the upper magnetic bowl and the inner wall of the upper housing, the grooves and the positioning pillars are in one-to-one correspondence and are embedded, so that the support and the inner cavity of the upper housing are clamped tightly.

6. The bone conduction earphone with the split vibrator of claim 1, further comprising a circuit board, an insulating board and a coil which are sequentially arranged in the inner cavity of the lower shell, wherein the coil is arranged on the top surface of the insulating board, the lower magnetic part is embedded into the middle of the coil and fixed on the insulating board, the insulating board is erected above the circuit board, and the coil is electrically connected with the circuit board.

7. The bone conduction earphone with the split vibrator according to claim 6, wherein two copper pillars are welded to the output pin and the input pin of the circuit board, respectively, the copper pillars are disposed beside the coil in a vertical direction, top surfaces of the copper pillars are flush with top surfaces of the coil, and two ends of the coil are welded to top surfaces of the two copper pillars, respectively.

8. The bone conduction earphone with the split vibrator of claim 6, wherein the circuit board is fixed with the bottom surface of the inner cavity of the lower shell in a threaded manner.

9. The bone conduction earphone with the split vibrator of claim 2, wherein a fixing protrusion is arranged at a joint of the lower shell and the upper shell, a fixing groove for the fixing column to be embedded in is formed in the fixing protrusion, an upper magnetic part, an upper magnetic bowl, a bracket and a hollow elastic sheet which are respectively assembled with the upper shell are embedded in an inner cavity of the lower shell under the condition that the upper shell and the lower shell are vertically opposite, the upper magnetic part and the lower magnetic part are parallel to each other in the vertical direction and have a gap therebetween, and the fixing column and the fixing groove are embedded in a one-to-one correspondence manner to form the complete bone conduction earphone.

10. The bone conduction earphone having a split vibrator according to claim 9, wherein the top surface of the fixing protrusion is higher than the top surface of the lower case, and the fixing protrusion is inserted into the inner cavity of the upper case to abut against the outer resilient piece when the upper case and the lower case are vertically opposed.

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