A spring and a vibrator using the spring

Abstract

The present application relates to a shrapnel and a vibrator using the shrapnel, which includes a rigid shrapnel body and a damping diaphragm, wherein the damping diaphragm is compounded on the rigid shrapnel body, the rigid shrapnel body is used for bone conduction, and the damping diaphragm is used for air conduction. The damping diaphragm is compounded on the rigid shrapnel body to achieve the integration of bone conduction and air conduction. It can make sound through bone conduction vibration and through the damping diaphragm at the same time, reflecting the frequency response below 200HZ and above 3KHZ that the existing shrapnel cannot perform well. On the basis of the working principle of the original bone conduction vibrator shrapnel, the structure of the vibrator shrapnel is changed to achieve the combination of vibrator vibration and traditional speaker air conduction sound. It can achieve both bone conduction speaker vibration sound and air conduction speaker diaphragm sound, increase the frequency response range of bone conduction headphones, improve the sound quality of traditional bone conduction vibrators, and also increase practical scenarios.

Description

Technical Field

[0001] The present application relates to the field of electroacoustic devices, and in particular to a spring and an oscillator using the spring. Background Art

[0002] Bone conduction is a method of sound conduction, which converts sound into mechanical vibrations of different frequencies and transmits sound waves through the human skull, bony labyrinth, inner ear lymph, cochlear organ, auditory nerve, and auditory center.

[0003] The existing bone conduction vibrator conducts vibrations through electromagnetic transduction, using a spring made of rigid material. Due to the strong rigidity of the spring, large Q value, steep F0, unbalanced vibration, and large magnetic circuit vibration, the existing bone conduction audio response range is mainly concentrated between 200-3K HZ. This results in a small range of conducted audio response and a lack of high-frequency parts. Summary of the invention

[0004] In order to increase the conducted audio response range of the oscillator,

[0005] On the one hand, the present application provides a spring for a vibrator, which adopts the following technical solution:

[0006] A shrapnel for a vibrator comprises a rigid shrapnel body and a damping diaphragm, wherein the damping diaphragm is composited on the rigid shrapnel body, the rigid shrapnel body is used for bone conduction, and the damping diaphragm is used for air conduction.

[0007] By adopting the above technical solution, a damping diaphragm is compounded on the rigid spring body to achieve bone conduction and air conduction. It can make sound through bone conduction vibration and damping diaphragm at the same time, reflecting the frequency response below 200HZ and above 3KHZ that the existing spring cannot well express.

[0008] Optionally, the damping diaphragm is compounded on the rigid spring body by means of glue spraying thermoplastic molding.

[0009] By adopting the above technical solution, the damping diaphragm can be stably fitted on the rigid spring body.

[0010] Optionally, the rigid spring body includes an outer ring portion, a sound zone and an inner ring portion from the periphery to the center, and the sound zone includes a ring-shaped tone arm, or includes a quasi-ring-shaped tone arm, or includes at least two circumferential array tone arms, or includes a single tone arm.

[0011] By adopting the above technical solution, the rigid spring sheet can better perform bone conduction.

[0012] On the other hand, the present application provides a vibrator, which adopts the following technical solution:

[0013] A vibrator comprises a shell provided with a receiving cavity and a spring piece, wherein the spring piece is installed in the receiving cavity of the shell.

[0014] By adopting the above technical solution, when the shrapnel vibrates, the sound is produced through the vibration of the rigid shrapnel body for bone conduction, and the sound is produced through the damping diaphragm for air conduction, which has a better performance for frequency response below 200HZ and above 3KHZ.

[0015] Optionally, the accommodating cavity is connected to one end of the shell, an annular mounting groove is formed on the inner wall of the accommodating cavity, and the spring piece is installed in the mounting groove.

[0016] By adopting the above technical solution, the spring piece can be stably installed in the shell, and the shell with an opening at one end can also better conduct air.

[0017] Optionally, it also includes a magnet and a voice coil, either one of which is connected to the spring through a connecting component, and the other is installed in the accommodating cavity, the magnet is surrounded by the voice coil, and when the vibrator is working, the magnet and the voice coil move relative to each other.

[0018] Optionally, a U-cup is also included, wherein the U-cup surrounds the magnetic steel and forms a movement cavity for the voice coil to be inserted.

[0019] Optionally, it also includes a rigid vibration plate, which is installed and connected to the elastic plate, and the rigid vibration plate and the elastic plate are spaced apart to form a front cavity of the speaker.

[0020] By adopting the above technical solution, the rigid vibrator is used to transmit bone conduction vibration to achieve better effect. By adding a rigid vibrator, the effect of the double vibrator is achieved while taking into account the damping diaphragm sound structure space.

[0021] Optionally, a protective cover is installed at the open end of the accommodating cavity, and the protective cover is used to shield the shrapnel, and the shielding area of ​​the shrapnel by the protective cover is greater than 0.

[0022] By adopting the above technical solution, the protective cover can protect the shrapnel and reduce the possibility of the shrapnel being adhered to dirt or hit by other small objects, thereby extending the service life of the shrapnel and improving the use effect of the shrapnel.

[0023] Optionally, the protective cover and the spring sheet are spaced apart at positions corresponding to the sound producing parts to form a front cavity of the speaker.

[0024] By adopting the above technical solution, a sufficient movement stroke is reserved for the pronunciation part of the shrapnel, and at the same time, the cavity between the protective cover and the shrapnel can also perform air conduction well.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. Based on the original working principle of the bone conduction vibrator, the vibrator vibrator structure and assembly structure are changed to achieve the combination of vibrator vibration and traditional speaker air conduction sound;

[0027] 2. It can achieve both bone conduction speaker vibration and air conduction speaker diaphragm sound, increase the frequency response range of bone conduction headphones, improve the sound quality of traditional bone conduction vibrators, and also increase practical scenarios;

[0028] 3. The bone conduction earphones can have the same sound quality as ordinary earphones, and can also reflect the frequency response below 200HZ and above 3KHZ which the traditional bone conduction vibration plate cannot show well through the damping diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of Example 1.

[0030] Figure 2 This is a cross-sectional view of Example 1.

[0031] Figure 3 This is a cross-sectional view of Example 1.

[0032] Figure 4 It is a schematic diagram of the structure of the rigid spring body in Example 2.

[0033] Figure 5 It is a structural schematic diagram of the rigid spring body in Example 3.

[0034] Figure 6 It is a schematic diagram of the structure of the rigid spring body in Example 4.

[0035] Figure 7 This is a cross-sectional view of Example 6.

[0036] Figure 8 It is a structural schematic diagram of Example 5.

[0037] Fig. 9 This is a cross-sectional view of Example 5.

[0038] Fig.10 This is an exploded view of Example 5.

[0039] Fig.11 It is a structural schematic diagram of Example 7.

[0040] Fig.12 This is a cross-sectional view of Example 7.

[0041] Fig.13 This is an exploded view of Example 7.

[0042] Fig.14 It is a cross-sectional view of Example 8.

[0043] Fig.15This is a cross-sectional view of Example 9.

[0044] Fig.16 It is an exploded view of Example 9.

[0045] Fig.17 This is a cross-sectional view of Example 10.

[0046] Fig.18 It is an exploded view of Example 10.

[0047] Fig.19 It is a sound pressure test chart of Example 10 and related technologies.

[0048] Fig. 20 It is a sound quality distortion test chart of Example 10 and related technologies.

[0049] Fig.21 It is the air conduction test frequency response diagram of Example 10 and related technologies.

[0050] Explanation of the reference numerals in the accompanying drawings: 1. rigid spring body; 2. damping diaphragm; 3. outer ring; 4. sound zone; 5. inner ring; 6. tone arm; 7. shell; 8. spring; 9. magnet; 10. voice coil; 11. U cup; 12. accommodating cavity; 13. mounting groove; 14. moving cavity; 15. rivet; 16. through groove; 17. washer; 18. rigid diaphragm; 19. vibration part; 20. mounting part; 21. front cavity of speaker; 22. protective cover; 23. closing plate; 24. plug-in ring; 25. blocking ring; 26. first curved part; 27. second curved part; 28. voice coil bracket. DETAILED DESCRIPTION

[0051] The following is combined with Figure 1-18 This application is described in further detail.

[0052] Example 1

[0053] The present application embodiment discloses a spring piece for a vibrator. Figure 1 and Figure 2 A spring for a vibrator includes a rigid spring body 1 and at least one damping diaphragm 2. The rigid spring body 1 is made of a metal material or a plastic with high rigidity, and the damping diaphragm 2 is made of a damping material. The damping diaphragm 2 is compounded on the upper side of the rigid spring body 1, and the specific compounding method can be injection molding, spray molding, etc. In this embodiment, the damping diaphragm 2 is compounded on the rigid spring body 1 by spraying thermoplastic molding. The rigid spring body 1 is used for bone conduction, and the damping diaphragm 2 is used for air conduction.

[0054] In Example 1 of the present application, a damping diaphragm 2 is compounded on a rigid shrapnel body 1 to achieve the integration of bone conduction and air conduction. It can make sound through bone conduction vibration at the same time, and can also make sound through the damping diaphragm 2, reflecting the frequency response below 200HZ and above 3KHZ that the existing shrapnel 8 cannot perform well. On the basis of the working principle of the original bone conduction vibrator shrapnel 8, the structure of the vibrator shrapnel 8 is changed to achieve the combination of vibrator vibration and traditional speaker air conduction sound. It can achieve both bone conduction speaker vibration sound and air conduction speaker diaphragm sound, increase the frequency response range of bone conduction headphones, improve the sound quality of traditional bone conduction vibrators, and also increase practical scenarios.

[0055] Specifically, refer to Figure 3 , the rigid spring body 1 includes an outer ring portion 3, a sound zone 4 and an inner ring portion 5 from the periphery to the center, the outer ring portion 3 and the inner ring portion 5 are coaxially arranged, and the outer ring portion 3 and the inner ring portion 5 are fixedly connected together through the sound zone 4. The sound zone 4 includes at least two tone arms 6, and in this embodiment, there are 8 tone arms 6. All tone arms 6 are arranged at equal intervals along the circumference of the inner ring portion 5. And the two ends of the tone arm 6 are fixedly connected to the outer ring portion 3 and the inner ring portion 5 respectively. The tone arm 6 is arranged in a wavy shape, and the specific tone arm 6 includes a first curve portion 26 and a second curve portion 27. The first curve portion 26 is closer to the outer ring portion 3 than the second curve portion 27, and the crest of the first curve portion 26 is higher than the second curve portion 27. And the side of the tone arm 6 away from the damping diaphragm 2 is higher than the side of the outer ring portion 3 away from the damping diaphragm 2, and the plane where the side of the inner ring portion 5 away from the damping diaphragm 2 is located coincides with the side of the outer ring portion 3 away from the damping diaphragm 2.

[0056] The wavy tone arm 6 reduces the stress on the rigid spring sheet 8 during sound transmission, thereby reducing the probability of the rigid spring sheet body 1 breaking and deforming, and extending its service life.

[0057] Example 2

[0058] The difference between Example 2 and Example 1 is that, referring to Figure 4 The tone zone 4 includes a single tone arm 6, which can be in an arc shape, a sheet shape, etc. Two ends of the tone arm 6 are fixedly connected to the outer ring portion 3 and the inner ring portion 5 respectively.

[0059] Example 3

[0060] The difference between Example 3 and Example 1 is that, referring to Figure 5 The sound zone 4 includes a quasi-annular tone arm 6, which is an arc piece with an angle greater than 0 and less than 360.

[0061] Example 4

[0062] The difference between Example 4 and Example 1 is that, referring to Figure 6The sound zone 4 includes an annular tone arm 6, the outer wall of the annular tone arm 6 is fixedly connected to the outer ring portion 3, and the inner part of the annular tone arm 6 is fixedly connected to the inner ring portion 5. The outer ring portion 3, the sound zone 4 and the inner ring portion 5 are integrally formed.

[0063] Example 5

[0064] The difference between Example 5 and Example 1 is that, referring to Figure 7 The rigid spring body 1 is compounded with a damping diaphragm 2 on both sides.

[0065] Example 6

[0066] Reference Figure 8 and Fig. 9 , a vibrator, comprising a housing 7, a spring 8, a magnetic steel 9, a voice coil 10 and a U cup 11. The spring 8 is as described in Example 1. Fig. 9 and Fig.10 The housing 7 has an accommodating cavity 12 at its upper end, and an annular mounting groove 13 is formed on the side wall of the accommodating cavity 12. The mounting groove 13 is located on the inner wall of the accommodating cavity 12 near the opening end of the accommodating cavity 12, and the mounting groove 13 is connected to the upper end surface of the housing 7. The spring 8 is installed in the mounting groove 13 and abuts against the lower end surface of the mounting groove 13.

[0067] The magnet 9 is installed in the U cup 11 and the magnet 9 is fixedly connected to the spring 8 through the connecting assembly. The U cup 11 surrounds the magnet 9 and forms a movement cavity 14 for the voice coil 10 to be inserted between the magnet 9. The connecting assembly is a rivet 15, which passes through the magnet 9, the U cup 11 and the spring 8 in sequence, so that the magnet 9, the U cup 11 and the spring 8 are relatively fixed. A through groove 16 is provided on the bottom surface of the accommodating cavity 12, and the voice coil 10 is fixedly installed in the through groove 16. The voice coil 10 penetrates into the movement cavity 14.

[0068] The working principle of the oscillator is as follows:

[0069] 1. Magnetize the magnetic steel 9 with the N pole facing outward (downward);

[0070] 2. Input a forward current to the voice coil 10 (vertical section facing inward);

[0071] 3. The voice coil 10 is subjected to an outward (downward) force, and the magnet 9 is subjected to an inward (upward) reaction force;

[0072] 4. The voice coil 10 inputs positive and negative alternating current: the magnetic steel 9 is subjected to the alternating force of up and down, and moves relative to the voice coil 10, thereby causing the shrapnel 8 to vibrate; when the shrapnel 8 vibrates, the sound is produced through the vibration of the rigid shrapnel body 1 for bone conduction, and the sound is also produced through the damping diaphragm 2 for air conduction, and the frequency response below 200HZ and above 3KHZ is better;

[0073] 5. The vibration frequency of the magnet 9 is the same as the input current frequency of the voice coil 10.

[0074] In order to reduce the damage of the rivet 15 to the magnetic steel 9 during riveting, a washer 17 is provided between the magnetic steel 9 and the riveted joint of the rivet 15. During assembly, the rivet 15 is pressed against the magnetic steel 9 through the washer 17, thereby reducing the damage to the magnetic steel 9.

[0075] Example 7

[0076] The difference between Example 7 and Example 6 is that, referring to Fig.11 and Fig.12 The vibrator also includes a rigid vibrating piece 18. Fig.12 and Fig.13 The rigid vibrating plate 18 includes a vibrating portion 19 and a mounting portion 20. The vibrating portion 19 is annular and fixedly sleeved on the mounting portion 20. The rivet 15 passes through the mounting seat to fix the rigid vibrating plate 18 to the spring 8. The vibrating portion 19 is parallel to the spring 8 and is spaced apart from the spring 8, leaving a travel space for the damping diaphragm 2 to form a speaker front cavity 21. The size of the vibrating portion 19 is not limited.

[0077] The rigid vibrating plate 18 is used to transmit bone conduction vibration to achieve a better effect. By adding the rigid vibrating plate 18, the effect of the double vibrating plates is achieved while taking into account the sound structure space of the damping diaphragm 2.

[0078] Example 8

[0079] The difference between Example 8 and Example 6 is that, referring to Fig.14 , a protective cover 22 is installed at the open end of the accommodating cavity 12. The protective cover 22 includes a plug-in ring 24 and a closing plate 23 for closing the upper end of the plug-in ring 24. The plug-in ring 24 is inserted into the mounting groove 13 and abuts against the inner wall of the mounting groove 13, so that the protective cover 22 is stably installed on the housing 7. The closing plate 23 and the spring 8 are arranged at intervals to leave a travel space for the damping diaphragm 2, so that the protective cover 22 and the composite damping diaphragm 2 cooperate to form a speaker front cavity 21, so that the vibrator can better conduct air. At the same time, the protective cover 22 can protect the spring 8 and reduce the possibility of the spring 8 adhering to dirt or being hit by other small objects. The protective cover 22 can be made of aluminum and other materials.

[0080] Example 9

[0081] The difference between Example 9 and Example 7 is that, referring to Fig.15 and Fig.16, a protective cover 22 is installed at the open end of the accommodating cavity 12. The protective cover 22 includes a plug-in ring 24 and a blocking ring 25 fixedly installed on the inner wall of the plug-in ring 24. The plug-in ring 24 is inserted into the mounting groove 13 and abuts against the inner wall of the mounting groove 13, so that the protective cover 22 is stably installed on the housing 7. The blocking ring 25 and the spring 8 are arranged at intervals to leave a travel space for the damping diaphragm 2, so that the protective cover 22 and the composite damping diaphragm 2 cooperate to form a speaker front cavity 21, which better enables the vibrator to conduct air.

[0082] The projections of the blocking ring 25 and the rigid vibration plate 18 along the vertical direction completely cover the spring piece 8. The protective cover 22 can protect the spring piece 8 and reduce the possibility of the spring piece 8 being adhered to dirt or hit by other small objects. The protective cover 22 can be made of materials such as aluminum.

[0083] Example 10

[0084] The difference between Example 10 and Example 9 is that, referring to Fig.17 and 18 , the magnetic steel 9 is installed in the U cup 11, and the U cup 11 is fixedly installed in the accommodating cavity 12. The U cup 11 surrounds the magnetic steel 9 and forms a moving cavity 14 for the voice coil 10 to be inserted between the magnetic steel 9. The voice coil 10 is fixedly connected to the spring 8 through a connecting assembly. The connecting assembly includes a rivet 15 and a voice coil bracket 28, and the voice coil 10 is fixedly installed on the voice coil bracket 28. The rivet 15 passes through the voice coil bracket 28 and the spring 8 in turn, so that the voice coil 10 and the spring 8 are relatively fixed. The voice coil 10 penetrates into the moving cavity 14.

[0085] The working principle of the oscillator is as follows:

[0086] 1. Magnetize the magnetic steel 9 with the N pole facing outward (downward);

[0087] 2. Input a forward current to the voice coil 10 (vertical section facing inward);

[0088] 3. The voice coil 10 is subjected to an outward (downward) force, and the magnet 9 is subjected to an inward (upward) reaction force;

[0089] 4. The voice coil 10 is input with positive and negative alternating current: the magnet 9 is subjected to alternating up and down forces, and the voice coil 10 is also subjected to alternating up and down forces. Since the magnet 9 is fixed, the voice coil 10 moves relative to the magnet 9, thereby causing the shrapnel 8 to vibrate; when the shrapnel 8 vibrates, the rigid shrapnel body 1 vibrates to produce sound for bone conduction, and the damping diaphragm 2 can also produce sound for air conduction, and the frequency response below 200HZ and above 3KHZ is better.

[0090] 5. The vibration frequency of the magnet 9 is the same as the input current frequency of the voice coil 10.

[0091] The present embodiment is tested to obtain experimental results, which can be specifically referred to Fig.19, 20 It can be clearly seen that, compared with the case of the non-composite damping diaphragm 2, the distortion of this embodiment is significantly reduced, which effectively improves the sound quality and makes the sound clear. At the same time, the sound pressure near F0 is increased, making the sound softer.

[0092] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A spring for a vibrator, characterized in that: It comprises a rigid spring body (1) and a damping diaphragm (2), wherein the damping diaphragm (2) is composited on the rigid spring body (1), the rigid spring body (1) is used for bone conduction, and the damping diaphragm (2) is used for air conduction; The rigid spring sheet body (1) comprises an outer ring portion (3), a sound zone (4) and an inner ring portion (5) in sequence from the periphery to the center; the sound zone (4) comprises at least two circumferential array tone arms (6); the tone arms (6) are arranged at equal intervals along the circumference of the inner ring portion (5); and two ends of the tone arms (6) are respectively fixedly connected to the outer ring portion (3) and the inner ring portion (5); the tone arms (6) are arranged in a wave shape.

2. The shrapnel for a vibrator according to claim 1, characterized in that: The damping diaphragm (2) is composited onto the rigid spring sheet body (1) by means of glue spraying thermoplastic molding.

3. A vibrator, characterized in that: It comprises a shell (7) provided with a receiving cavity (12) and a spring piece (8), wherein the spring piece (8) is installed in the receiving cavity (12) of the shell (7), and the spring piece (8) is as described in any one of claims 1 to 2.

4. A vibrator according to claim 3, characterized in that: The accommodating cavity (12) is connected to one end of the housing (7), an annular mounting groove (13) is formed on the inner wall of the accommodating cavity (12), and the spring sheet (8) is mounted in the mounting groove (13).

5. A vibrator according to claim 3, characterized in that: It also includes a magnetic steel (9) and a voice coil (10), wherein any one of the magnetic steel (9) and the voice coil (10) is connected to the spring (8) through a connecting component, and the other is installed in the accommodating cavity (12), and the magnetic steel (9) is surrounded by the voice coil (10). When the vibrator is working, the magnetic steel (9) and the voice coil (10) move relative to each other.

6. A vibrator according to claim 5, characterized in that: It also comprises a U cup (11), wherein the U cup (11) surrounds the magnetic steel (9) and forms a movement cavity (14) between the magnetic steel (9) for inserting the voice coil (10).

7. A vibrator according to claim 3 or 4 or 5 or 6, characterized in that: It also comprises a rigid vibration plate (18), wherein the rigid vibration plate (18) is mounted and connected to the elastic plate (8), and the rigid vibration plate (18) and the elastic plate (8) are spaced apart to form a speaker front cavity (21).

8. A vibrator according to claim 4, characterized in that: A protective cover (22) is installed at the open end of the accommodating cavity (12), and the protective cover (22) is used to shield the spring piece (8), and the shielding area of ​​the spring piece (8) by the protective cover (22) is greater than 0.

9. A vibrator according to claim 8, characterized in that: The protective cover (22) and the spring piece (8) are arranged at intervals at positions corresponding to the sounding parts to form a speaker front cavity (21).

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