CN114205719B - Spring plate with double missile arm structure, bone conduction vibrator and assembly method thereof - Google Patents
Spring plate with double missile arm structure, bone conduction vibrator and assembly method thereof Download PDFInfo
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- CN114205719B CN114205719B CN202111454673.0A CN202111454673A CN114205719B CN 114205719 B CN114205719 B CN 114205719B CN 202111454673 A CN202111454673 A CN 202111454673A CN 114205719 B CN114205719 B CN 114205719B
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
Abstract
The invention discloses a spring plate with a double missile arm structure, a bone conduction vibrator and an assembly method thereof, wherein the spring plate comprises the following components: the concentric inner ring and the outer ring are connected through double missile arms, and the double missile arms comprise: the first elastic arm is an arc concentric with the inner ring, one end of the first elastic arm is connected with the inner ring through a first connecting sheet, the second elastic arm is an arc concentric with the inner ring, one end of the second elastic arm is connected with the other end of the first elastic arm through a second connecting sheet, the other end of the second elastic arm is connected with the outer ring through a third connecting sheet, and the radius of the arc of the second elastic arm is larger than that of the first elastic arm; the radian value of the first elastic arm is equal to that of the second elastic arm. Through the shell fragment design of two missile arm structures, improved the stability and the elasticity of shell fragment assembly, increase the shell fragment elasticity, make it reach high frequency vibration frequency, promote tone quality.
Description
[ field of technology ]
The invention relates to the technical field of bone conduction vibrator structure design, in particular to a spring plate with a double missile arm structure, a bone conduction vibrator and an assembly method thereof.
[ background Art ]
Bone conduction vibrators are devices used for conducting sound in products such as headphones and hearing aids, and are used for transmitting sound to human bones or amplifying sound in a sound player by converting sound source signals (such as electric signals) into mechanical vibrations and transmitting and amplifying the vibrations.
The bone conduction vibrator comprises an elastic sheet for transmitting vibration, and the existing elastic sheet has various structural designs, but the following problems are existed: 1. the hardness is high, the vibration frequency is affected, the sound amplification is not facilitated, and the sound quality is affected; 2. the structure is unstable, and the structure cannot be fixed on the shell to form a suspension structure with the transduction device; 3. the structure is complex, the volume is larger, and the miniaturized design of the vibrator is not facilitated.
[ invention ]
Aiming at the defects in the prior art, the invention respectively provides the elastic piece with the double missile arm structure, the bone conduction vibrator and the assembly method thereof, and the stability of the elastic piece assembly is improved, the stability and the elasticity of the elastic piece assembly are improved, the elasticity of the elastic piece is increased, the high-frequency vibration frequency is achieved, and the tone quality is improved through the elastic piece design of the double missile arm structure.
In order to solve the above technical problems, in a first aspect, the present invention provides a spring plate with a dual missile arm structure, the spring plate includes:
the concentric inner ring and the outer ring are connected through double missile arms, and the double missile arms comprise:
the first elastic arm is an arc concentric with the inner ring, one end of the first elastic arm is connected with the inner ring through a first connecting sheet,
the second elastic arm is an arc concentric with the inner ring, one end of the second elastic arm is connected with the other end of the first elastic arm through a second connecting sheet, the other end of the second elastic arm is connected with the outer ring through a third connecting sheet, and the radius of the arc of the second elastic arm is larger than that of the first elastic arm;
the radian value of the first elastic arm is equal to that of the second elastic arm.
Further, the method comprises the steps of,
the elastic sheet comprises three double missile arms which are uniformly arranged between the inner ring and the outer ring.
Further, the method comprises the steps of,
the first missile arm of the double missile arm is parallel to the second missile arm of a double missile arm adjacent to one end of the first missile arm, and the second missile arm of the double missile arm is parallel to the first missile arm of another double missile arm adjacent to the other end of the second missile arm.
Further, the method comprises the steps of,
the intersection included angle of the connecting lines between the first connecting plates of two adjacent double missile arms and the circle center is 120 degrees.
Further, the method comprises the steps of,
the difference between the outer diameter and the inner diameter of the inner ring is greater than the difference between the outer diameter and the inner diameter of the outer ring.
Further, the method comprises the steps of,
the difference between the outer diameter and the inner diameter of the inner ring is at least 2 times the difference between the outer diameter and the inner diameter of the outer ring.
Further, the method comprises the steps of,
the tangent lines of the first connecting piece, the first elastic arm and the inner ring are perpendicular to the first connecting piece, the tangent lines of the second connecting piece, the first elastic arm and the second elastic arm are perpendicular to the second connecting piece, and the tangent lines of the third connecting piece, the second elastic arm and the outer ring are perpendicular to the third connecting piece.
In a second aspect, the present invention also provides a bone conduction transducer having a dual missile arm structure, including:
the spring plate with the double missile arm structure according to the first aspect,
the shell comprises an accommodating space with two open ends, wherein a substrate is fixed at one open end;
the transduction device is electrically connected with the substrate through a wire;
a panel secured to the other open end;
the transduction device and the elastic sheet are connected in the accommodating space in a hanging way through a connecting shaft, and the panel is fixed on the shell and is close to the opening end of the elastic sheet.
Further, the method comprises the steps of,
the panel comprises a boss and a platform, the boss protrudes towards the direction away from the elastic sheet relative to the platform, and a round hole is formed in the center of the boss.
In a third aspect, the present invention provides a method of assembling a bone conduction transducer having a dual missile arm structure, for manufacturing the bone conduction transducer having a dual missile arm structure according to the second aspect, the method comprising:
fixing a spring plate with a double missile arm structure in a containing space of the vibrator;
inserting and suspending a connecting shaft in an inner ring of the elastic sheet;
fixedly hanging the transduction device on the connecting shaft;
and fixedly connecting the substrate with one end, close to the transduction device, of the accommodating space, and connecting the transduction device with the substrate through a wire.
The invention has the beneficial effects that:
the elastic sheet of the invention forms a double missile arm structure between the inner ring and the outer ring of the elastic sheet by connecting the two missile arms through the three connecting sheets, thereby enhancing the flexibility and the elasticity of the elastic sheet, improving the sensitivity of the vibrator, enhancing the stability and the balance of the elastic sheet by the double missile arm structure, and ensuring that a better sound quality effect is obtained in the sound conduction process of the bone conduction vibrator.
[ description of the drawings ]
In order to more clearly illustrate the embodiments of the invention or the prior art solutions, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some of the embodiments described in the present invention, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic view of a spring with dual missile arm structure according to the present invention in one embodiment;
FIG. 2 is a schematic view of a spring with dual missile arm structure according to the present invention in another embodiment;
FIG. 3 is a schematic view of a spring with dual missile arm structure according to the present invention in another embodiment;
FIG. 4 is an exploded view of a bone conduction transducer of the present invention having a dual missile arm structure;
FIG. 5 is a schematic diagram of a panel structure of a bone conduction transducer with a dual missile arm structure according to the present invention;
fig. 6 is a schematic diagram illustrating assembly of a spring plate of a bone conduction vibrator with a double missile arm structure according to the present invention;
FIG. 7 is a schematic diagram of an assembly of a bone conduction transducer having a dual missile arm structure in accordance with the present invention;
fig. 8 is a schematic view of an assembly structure in a receiving space of a bone conduction transducer having a dual missile arm structure according to the present invention.
Reference numerals and components referred to in the drawings are as follows:
1. shrapnel, 11, inner ring, 12, outer ring, 13, double missile arm, 131, first missile arm, 132, second missile arm, 133, first connecting piece, 134, second connecting piece, 135, third connecting piece, 2, outer shell, 21, accommodating space, 22, base plate, 3, transducer, 4, panel, 41, boss, 42, platform, 43, round hole, 5.
[ detailed description ] of the invention
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that the descriptions of the "first" and "second" and the like used in the embodiments of the present invention are used for descriptive purposes only and should not be construed as indicating or implicitly indicating the number of the defined technical features, and thus, the features defining the "first" and "second" in each embodiment of the present invention may indicate that at least one of the defined technical features is included.
In the description of the present invention, it should be understood that the directions or positional relationships indicated as being "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are directions or positions based on the drawings are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific direction, a specific direction configuration and operation, and thus should not be construed as limiting the present invention.
Embodiments one to three of the present invention provide a spring plate with a dual missile arm structure, generally, the spring plate is used as a thin plate type or sheet structure for generating and conducting vibration inside a bone conduction vibrator, and the manufacturing materials include, but are not limited to: steel (such as, but not limited to, stainless steel, carbon steel, etc.), light alloy (such as, but not limited to, aluminum alloy, beryllium copper, magnesium alloy, titanium alloy, etc.), hard plastic (such as, but not limited to, engineering plastic, high molecular polyethylene, blow-molded nylon, etc.), composite fiber (such as, but not limited to, graphite fiber, graphene fiber, glass fiber, carbon fiber, boron fiber, silicon carbide fiber, aramid fiber, etc.). The elastic sheet with the double missile arm structure is characterized in that the double missile arm structure is formed by two missile arms which are erected between an inner ring and an outer ring of the elastic sheet and extend in different directions, one of the two missile arms is connected with the outer ring, the other missile arm is connected with the inner ring, and when the elastic sheet vibrates, vibration is conducted in different directions through the two missile arms, so that the double missile arm structure is formed.
Embodiment one:
referring to fig. 1, a schematic structural diagram of a spring plate with a dual missile arm structure according to the present invention is shown in a first embodiment, in which the spring plate 1 is integrally designed as a circular sheet structure, and includes: the inner ring 11 and the outer ring 12 are connected through double missile arms 13. The difference between the outer diameter and the inner diameter of the inner ring 11 is larger than the difference between the outer diameter and the inner diameter of the outer ring 12, as shown, the inner ring 11 is wider than the outer ring 12. Preferably, the difference between the outer diameter and the inner diameter of the inner ring 11 is at least 2 times that of the outer diameter and the inner diameter of the outer ring 12, and the optimal value is 2.5 times or 3 times that of the outer diameter and the inner diameter, and the size of the elastic piece and the width ratio between the inner diameter 11 and the outer diameter 12 are adjusted according to the size of the vibrator and the size of the elastic piece. In this embodiment, the elastic sheet 1 includes three double missile arms 13a, 13b, 13c uniformly arranged between the inner ring 11 and the outer ring 12, and the three double missile arms 13a, 13b, 13c have the same structure and each include: the first elastic arm 131 and the second elastic arm 132 are respectively provided with a section of arc structure and are concentric with the inner ring, wherein one end of the first elastic arm 131 is connected with the outer edge of the inner ring 11 through the first connecting piece 133, the other end of the first elastic arm 131 is connected with one end of the second elastic arm 132 through the second connecting piece 134, the other end of the second elastic arm 132 is connected with the outer ring 12 through the third connecting piece 135, the arc radius of the second elastic arm 132 is larger than that of the first elastic arm 131, the first elastic arm 131 and the second elastic arm 132 do not cross each other and are not overlapped, and specifically, the two ends of the second elastic arm 134 respectively extend in the clockwise direction and the anticlockwise direction to form the first elastic arm 131 and the second elastic arm 132 respectively; the arc value of the first spring arm 131 is equal to the arc value of the second spring arm 132.
As shown in fig. 1, three of the double missile arms 13a, 13b, 13c are adjacent to each other, the first connection pieces 133a, 133b, 133c of each of the three double missile arms extend from different positions on the outer edge of the inner ring 11, the third connection pieces 135a, 135b, 135c of each of the three double missile arms are connected to different positions on the inner edge of the outer ring 12, and the first connection pieces 133, the second connection pieces 134, and the third connection pieces 135 of the three double missile arms are stacked one on top of another. Specifically, the first spring arm 131a of the double-missile arm 13a and the second spring arm 132b of the double-missile arm 13b adjacent to one end thereof are parallel arcs, and the second spring arm 132a of the double-missile arm 13a and the first spring arm 131c of the other double-missile arm 13c adjacent to the other end thereof are parallel arcs. The intersection included angle of the connecting lines between the first connecting plates of two adjacent double missile arms and the circle center is 120 degrees, as shown in fig. 1, the connecting line between the first connecting plate 133a of the double missile arm 13a and the circle center is simultaneously intersected with the connecting line between the first connecting plate 133b of the double missile arm 13b and the circle center and the connecting line between the first connecting plate 133c of the double missile arm 13c and the circle center, and the three connecting lines form three equal included angles of 120 degrees.
Specifically, the arc radius of the second missile arm of each double missile arm is larger than the arc radius of the first missile arm through the connecting sheet, and the difference value of the arc radii of the second missile arm and the first missile arm can be equal to or larger than the width of one missile arm. As shown in fig. 1, two ends of the first connecting piece 133 are respectively connected with the first elastic arm 131 and the outer edge of the inner ring, and at the connection position, the tangent lines of the first elastic arm 131 and the outer edge of the inner ring are perpendicular to the first connecting piece 133, the tangent lines of the second connecting piece 134 and the connection position of the first elastic arm 131 and the second elastic arm 132 are perpendicular to the second connecting piece 134, the third connecting piece 135 is connected with the second elastic arm 132 and the inner edge of the outer ring, and at the connection position, the tangent lines of the second elastic arm 132 and the inner edge of the outer ring are perpendicular to the third connecting piece 135.
Embodiment two:
referring to fig. 2, a schematic structural diagram of a spring plate with a dual missile arm structure according to the present invention is shown in a second embodiment, in which the spring plate 1 is integrally designed as a circular sheet structure, and includes: the inner ring 11 and the outer ring 12 are connected through two double missile arms 13a and 13b, and the two double missile arms 13a and 13b have the same structure and both comprise: the first elastic arm 131, the second elastic arm 132, the first connecting piece 133, the second connecting piece 134 and the third connecting piece 135, where the first elastic arm 131 and the second elastic arm 132 are all set to have a circular arc structure and concentric with the inner ring 11, and the two dual missile arms 13a and 13b shown in fig. 2 are randomly arranged between the inner ring 11 and the outer ring 12, preferably, in practice, the two dual missile arms 13a and 13b are uniformly arranged between the inner ring 11 and the outer ring 12, and in particular, a connecting line from the first connecting piece 133a of the dual missile arm 13a to the center intersects a connecting line from the first connecting piece 133b of the dual missile arm 13b to the center to form two equal 180 ° included angles.
When the two double missile arms 13a, 13b in the second embodiment are arranged randomly as shown in fig. 2, the first missile arm 131a of the double missile arm 13a and the second missile arm 131b of the double missile arm 13b are stacked one by one, the first connecting piece 133a of the double missile arm 13a and the second connecting piece 134b of the double missile arm 13b are stacked one by one, and the second connecting piece 134a of the double missile arm 13a and the third connecting piece 135b of the double missile arm 13b are stacked one by one; when the two double missile arms 13a and 13b are arranged end to end in the second embodiment, the line between the first connecting piece 133a of the double missile arm 13a and the center intersects with the line between the first connecting piece 133b of the double missile arm 13b and the center to form two equal 180 ° angles, at this time, the first missile arms and the second missile arms of the two double missile arms 13a and 13b are not overlapped with each other and uniformly arranged around the inner ring 11, the first connecting piece 133a of the double missile arm 13a is opposite to the third connecting piece 135b of the double missile arm 13b, and meanwhile, the third connecting piece 135a of the double missile arm 13a is opposite to the first connecting piece 133b of the double missile arm 13 b.
It should be noted that, when the inner ring 11 and the outer ring 12 of the elastic sheet 1 are connected by two double missile arms 13a and 13b, the double missile arms 13a and 13b may also be configured to have a completely same missile arm structure with 360 ° winding radian, specifically, a 180 ° included angle is formed by a connection line from the first connection piece 133a of the double missile arm 13a to the center of the inner ring 11 and a connection line from the center of the inner ring 11 of the second connection piece 134a, a 360 ° included angle is formed by a connection line from the first connection piece 133a of the double missile arm 13a to the center of the inner ring 11 and a connection line from the third connection piece 135a to the center of the inner ring 11, at this time, the two double missile arms 13a and 13b are stacked in parallel and one by one, the first missile arm 131a of the double missile arm 13a and the second missile arm 132b of the double missile arm 13b are stacked in parallel, and the second connection piece 134a of the double missile arm 13a is stacked between the first connection piece 135a and the third connection piece 133a of the double missile arm 13 a.
Embodiment III:
referring to fig. 3, a schematic structural diagram of a spring plate with a dual missile arm structure according to the present invention in a third embodiment is shown, in which the spring plate 1 is integrally designed as a circular sheet structure, and includes: an inner ring 11 and an outer ring 12 which are circular and concentric, wherein the inner ring 11 and the outer ring 12 are connected through a double missile arm 13, and the double missile arm 13 comprises: the first elastic arm 131, the second elastic arm 132, the first connecting piece 133, the second connecting piece 134 and the third connecting piece 135, wherein the first elastic arm 131 and the second elastic arm 132 are all arranged to be of a section of arc structure and are concentric with the inner ring 11. The arc value of the first spring arm 131 is equal to the arc value of the second spring arm 132. In the drawings, the radian value of the first arm 131 and the radian value of the second arm 132 are both 0.5 pi, in practice, the arc length of the first arm 131 and the arc length of the second arm 132 may be prolonged simultaneously, so that the double missile arm 13 completely surrounds the inner ring 11, and at this time, the radian value of the first arm 131 and the radian value of the second arm 132 reach pi, and the first connecting piece 133 and the third connecting piece 135 are opposite.
Embodiment four:
a fourth embodiment of the present invention is described as a bone conduction vibrator having a double missile arm structure, in which the elastic sheet having a double missile arm structure described in the first to third embodiments is contained, and the bone conduction vibrator of the present invention can be applied to various bone conduction hearing devices including, but not limited to, headphones, hearing aids, bone conduction glasses and other portable or wearable hearing devices, and the bone conduction vibrator described in the present embodiment is a device for transforming a sound source signal (such as an electrical signal, etc.) into mechanical vibration and transmitting the vibration to a human bone, so that a person can recognize a sound through the bone, in a manner that only the acoustic electrical signal can be transformed into mechanical vibration, including, but not limited to, a voltage type, an electromagnetic type, etc., and in the art, the bone conduction vibrator is also referred to as a bone conduction vibrator, a bone conduction sensor, a bone conduction speaker, etc., and it should be understood that the above Ren Yiding is merely a text replacement, and the structural and functional principle are substantially identical.
The invention as shown in fig. 4 has an exploded view of a bone conduction vibrator with a double missile arm structure, the bone conduction vibrator includes: the specific implementation of the spring 1 is the same as the first to third embodiments, and is not repeated here. The housing 2 includes a receiving space 21 having two open ends, one of which is fixed with a base plate 22; the transduction device 3 is electrically connected with the substrate 22 through a wire; the panel 4 is fixed at the other opening end; the transducer 3 and the elastic sheet 1 are suspended and connected in the accommodating space 21 by a connecting shaft 5, and the panel 4 is fixed on the housing 2 near the open end of the elastic sheet 1. The transducer 3 in this embodiment is used to convert the signal containing sound information into mechanical vibration, and then amplified by the elastic sheet 1 and the panel 4 to be transmitted to the sound generating device or directly transmitted to the human body. The operating principle of the transducer means 3 includes, but is not limited to, moving coil, electrostatic, pneumatic, electromagnetic, etc. In this embodiment, a moving coil type transducer is preferably adopted, specifically, a wound columnar coil and a magnet are suspended inside a casing 2 through a spring plate 1 and a connecting shaft 5, further, the coil is electrically connected with a substrate 22 through a wire, a signal containing sound information is received, and under the action of current driving, the coil drives the spring plate 1 and a panel 4 to vibrate and sound in a magnetic field generated by the magnet. It should be noted that, in the embodiment and the drawings, the bone conduction vibrator includes a spring plate 1 and a panel 4, and in practical application, according to the requirement of the vibrator sound quality, the spring plate 1 and the panel 4 can use any number of combination to cooperate with the transducer 3 to vibrate and sound.
In a preferred embodiment, as shown in fig. 5, at least one panel 4 of the bone conduction vibrator is designed to have a structure as shown in fig. 5, and includes a boss 41 and a platform 42, wherein the boss 41 protrudes relative to the platform 42 in a direction away from the elastic sheet 1, and a circular hole 43 is formed in the center of the boss 41. When the vibrator is assembled, the outer edge of the faceplate 4 is fixed to the inner side wall of the housing 2, and the boss 41 is protruded to be flush with the open end of the housing 2. Preferably, the diameter of the round hole in the center of the panel 4 is larger than the inner diameter of the inner ring 11 of the elastic sheet 1.
Fifth embodiment:
the fifth embodiment of the present invention provides an assembling method for manufacturing and assembling the bone conduction transducer with the dual missile arm structure according to the fourth embodiment, wherein the specific steps are as follows:
the elastic sheet 1 with the double missile arm structure is fixed in the accommodating space 21 of the vibrator, specifically, the outer side wall of the outer ring 12 of the elastic sheet 1 is fixed on the inner side wall of the shell 2, so that the stable balance of the elastic sheet 1 and the shell 2 in the horizontal direction is ensured;
inserting and suspending a connecting shaft 5 into the inner ring 11 of the elastic sheet 1, specifically, arranging a baffle at one end of the connecting shaft and a tip at the other end of the connecting shaft, inserting the tip into the inner ring 11 until the baffle clamps the inner ring 11, so that one end of the baffle of the connecting shaft 5 is suspended on the elastic sheet 1, and suspending the shaft body of the connecting shaft 5 in the center of the accommodating space 21;
fixedly hanging the transduction device 3 on the connecting shaft 5, arranging a perforation in the center of the transduction device 3, inserting the tip of the connecting shaft 5 into the perforation of the transduction device 3, then processing the tip in a heating and melting mode, and fixing the transduction device 3 on the connecting shaft 5;
the substrate 22 is fixedly connected with one end of the accommodating space 21, which is close to the transduction device 3, and the transduction device 3 is connected with the substrate 22 through a wire. Specifically, the base plate 22 is fixed at the open end of the accommodating space 21 and keeps flush with the open end. The wires pass through the substrate 22 to connect the transducer 3 with the positive and negative electrodes on the substrate 22. Preferably, as shown in fig. 8, through holes or guide channels are formed in the substrate 22 to facilitate the storage and placement of the wires.
After the elastic sheet 1, the transducer 3 and the substrate 22 are assembled in order in the accommodating space 21 in the housing 2, the panel 4 is further fixed to the other opening end of the accommodating space 21 opposite to the substrate 22, and when assembling, firstly, the vibrating plate 4 is abutted against the opening end of the housing 2, and then, the opening end of the housing 2 is welded by heating to fix the vibrating plate 4 to the port.
Compared with the manufacturing method of the vibrator in the prior art, the assembling method of the embodiment is simple to operate, and no additional assembling parts or adhesive are needed in the assembling process, so that the vibration performance of the bone conduction vibrator is guaranteed to the greatest extent, and a better sound quality effect is obtained.
The foregoing is merely exemplary of the present invention and is not intended to limit the present invention. Various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are to be included in the scope of the claims of the present invention.
Claims (9)
1. A spring having a dual missile arm structure, the spring comprising:
the concentric inner ring and the outer ring are connected through double missile arms, and the double missile arms comprise:
the first elastic arm is an arc concentric with the inner ring, one end of the first elastic arm is connected with the inner ring through a first connecting sheet,
the second elastic arm is an arc concentric with the inner ring, one end of the second elastic arm is connected with the other end of the first elastic arm through a second connecting sheet, the other end of the second elastic arm is connected with the outer ring through a third connecting sheet, and the radius of the arc of the second elastic arm is larger than that of the first elastic arm;
the radian value of the first elastic arm is equal to that of the second elastic arm;
the tangent lines of the first connecting piece, the first elastic arm and the inner ring are perpendicular to the first connecting piece, the tangent lines of the second connecting piece, the first elastic arm and the second elastic arm are perpendicular to the second connecting piece, and the tangent lines of the third connecting piece, the second elastic arm and the outer ring are perpendicular to the third connecting piece.
2. The spring with dual missile arm structure according to claim 1, including three dual missile arms uniformly arranged between the inner ring and the outer ring.
3. The spring with double missile arm structure according to claim 2, wherein the first missile arm of the double missile arm is parallel to the second missile arm of one double missile arm adjacent to one end of the first missile arm, and the second missile arm of the double missile arm is parallel to the first missile arm of the other double missile arm adjacent to the other end of the second missile arm.
4. The spring with double missile arm structure according to claim 2, wherein the connecting lines between the first connecting plates of two adjacent double missile arms and the circle center intersect at an included angle of 120 °.
5. The spring with dual missile arm structure according to claim 2, wherein the difference between the outer diameter and the inner diameter of the inner ring is greater than the difference between the outer diameter and the inner diameter of the outer ring.
6. The spring with dual missile arm structure according to claim 5, wherein the difference between the outer diameter and the inner diameter of the inner ring is at least 2 times the difference between the outer diameter and the inner diameter of the outer ring.
7. A bone conduction transducer having a dual missile arm structure, comprising:
the spring with double missile arm structure according to any one of claim 1-6,
the shell comprises an accommodating space with two open ends, wherein a substrate is fixed at one open end;
the transduction device is electrically connected with the substrate through a wire;
a panel secured to the other open end;
the transduction device and the elastic sheet are connected in the accommodating space in a hanging way through a connecting shaft, and the panel is fixed on the shell and is close to the opening end of the elastic sheet.
8. The bone conduction vibrator with the double missile arm structure according to claim 7, wherein the panel includes a boss and a platform, the boss protrudes away from the elastic sheet relative to the platform, and a circular hole is formed in the center of the boss.
9. A method of assembling a bone conduction transducer having a dual missile arm structure, for manufacturing the bone conduction transducer having a dual missile arm structure as claimed in any one of claims 7 to 8, the method comprising:
fixing a spring plate with a double missile arm structure in a containing space of the vibrator;
inserting and suspending a connecting shaft in an inner ring of the elastic sheet;
fixedly hanging the transduction device on the connecting shaft;
and fixedly connecting the substrate with one end, close to the transduction device, of the accommodating space, and connecting the transduction device with the substrate through a wire.
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| CN202111454673.0A CN114205719B (en) | 2021-12-01 | 2021-12-01 | Spring plate with double missile arm structure, bone conduction vibrator and assembly method thereof |
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| CN114979882A (en) * | 2022-04-29 | 2022-08-30 | 苏州索迩电子技术有限公司 | Elastic sheet, bone conduction vibration sound production device and bone conduction glasses |
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