WO2023208052A1

WO2023208052A1 - Elastic piece, bone conduction vibration sound-production device, and bone conduction glasses

Info

Publication number: WO2023208052A1
Application number: PCT/CN2023/090903
Authority: WO
Inventors: 刘莹; 陶志勇
Original assignee: 苏州索迩电子技术有限公司
Priority date: 2022-04-29
Filing date: 2023-04-26
Publication date: 2023-11-02
Also published as: CN114979882A

Abstract

Disclosed in the present invention are an elastic piece, a bone conduction vibration sound-production device, and bone conduction glasses. The elastic piece comprises an outer bracket, a connecting plate, and elastic arms. The connecting plate is located in the outer bracket; the two elastic arms and the connecting plate are arranged side by side, and the two elastic arms are respectively located on two sides of the connecting plate; each elastic arm comprises a body, a first connection portion and a second connection portion which are connected to the connecting plate, and a third connection portion connected to the outer bracket; and the third connection portion is located between the first connection portion and the second connection portion. In the present invention, the structure of the elastic arms is more stable, and the connecting plate is better in directivity and not prone to swinging during vibration, so that the risk of rolling vibration of a vibrator connected to the connecting plate is reduced, and the working reliability of the bone conduction vibration sound-production device provided with the elastic piece is better.

Description

A shrapnel, bone conduction vibration sound device and bone conduction glasses

Priority information: This application claims priority from Chinese patent application No. 202210494000.6, filed on April 29, 2022.

Technical field

The present invention relates to the technical field of bone conduction sound generation, and in particular to a shrapnel and a bone conduction vibration sound generation device.

Background technique

At present, wearable devices such as bone conduction headphones and bone conduction glasses usually use bone conduction vibration and sound devices to vibrate and sound. The vibrators of bone conduction vibration and sound devices usually vibrate under the action of a magnetic field and are reset by elastic fragments. The elastic fragments usually include a center plate, There are an outer bracket surrounding the periphery of the center plate and a number of arc-shaped elastic arms connected at both ends between the center plate and the outer bracket respectively. The vibrator is connected to the center plate and resets through the elastic force of the elastic arms.

When the bone conduction vibration sound-generating device is in the shape of a long and narrow strip, the vibrator, elastic pieces and other parts are also in the shape of strips. It is difficult to process using the traditional elastic piece structure. The size of the center plate and elastic arms is difficult to guarantee, and due to the size of the vibrator The vibrator of a bone conduction vibrating sound-generating device with a large length-to-width ratio and a traditional shrapnel structure tends to swing left and right when vibrating, causing rolling vibration, causing noise, distortion and other undesirable phenomena, which is not conducive to the normal operation of the bone conduction vibrating sound-producing device.

Therefore, it is necessary to improve the prior art to overcome the defects in the prior art.

Contents of the invention

The object of the present invention is to provide a spring piece, a bone conduction vibration sounding device and bone conduction glasses. When the bone conduction vibration sounding device using the spring piece vibrates, the vibrator is less likely to roll.

In order to achieve the above-mentioned object of the invention, in the first aspect, the invention proposes a spring piece, including:

external bracket;

A connecting plate located within the outer bracket; and,

Two elastic arms, the two elastic arms are arranged side by side with the connecting plate and are respectively located on both sides of the connecting plate. The elastic arms include a body, a first connecting portion connected to the connecting plate and a second connecting plate. A connecting part and a third connecting part connected to the outer bracket, the third connecting part is located at the first connecting part and the second connection part.

Further, the first connection part and the second connection part are connected to both ends of the body, and the third connection part is connected to the middle part of the body.

Further, the connecting plate and the two elastic arms as a whole have a first center line and a second center line that are perpendicular to each other, and the connecting plate and the two elastic arms as a whole are centered on the first center line. The center line is axially symmetrical with the second center line.

Further, the outer bracket includes two rods located on both sides of the connecting plate, and the third connecting portion is connected between the body and the rod.

Further, the rod body, the connecting plate and the main body are all in strip shape.

Further, the outer bracket is annular and surrounds the outer periphery of the connecting plate.

Further, the length of the third connecting part is greater than the sum of the lengths of the first connecting part and the second connecting part.

Further, the elastic piece also includes a plurality of elastic connecting arms connected to the outer bracket.

Further, the elastic connecting arm includes an arm portion connected to the outer bracket and a connecting foot connected to the arm portion. The width of the connecting foot is greater than or equal to the width of the arm portion.

Furthermore, the elastic piece also includes a ring frame and a plurality of elastic connecting arms connected to the ring frame. The outer bracket is connected to the ring frame and the two are stacked up and down.

In a second aspect, the present invention proposes a bone conduction vibration sound-generating device, including the elastic piece as described in any one of the above items.

In a third aspect, the present invention proposes bone conduction glasses, including:

first shell;

A second housing is connected to the first housing, and a receiving cavity is formed between the first housing and the second housing; and,

A bone conduction vibration and sound-generating device is located in the receiving cavity. The bone conduction vibration and sound-generating device includes an outer frame connected to the first shell, a vibrator and a shrapnel provided in the outer frame;

Wherein, the outer bracket of the elastic piece is connected to the outer frame, the vibrator is connected to the connecting plate of the elastic piece, and the elastic connecting arm of the elastic piece is connected to the second housing.

Compared with the prior art, the present invention has the following beneficial effects:

1. In the present invention, elastic arms are provided on both sides of the connecting plate of the elastic piece, and the elastic arms have a function for connecting with the connecting plate. The connected first connecting part and the second connecting part and the third connecting part used to connect with the outer bracket. The third connecting part is located between the first connecting part and the second connecting part, making the structure of the elastic arm more stable. The connecting plate has better directionality when vibrating and is less likely to sway, thereby reducing the risk of rolling vibration of the vibrator connected to the connecting plate. The bone conduction vibration sound-generating device with the elastic piece has better working reliability.

2. As an improvement, the elastic piece also includes a number of elastic connecting arms connected to the outer bracket. The elastic piece can be connected to the external fixation through the elastic connecting arms. In this way, the bone conduction vibration sounding device with the elastic piece can dampen vibration when vibrating. function to reduce vibration transmitted to external fixtures, thereby reducing sound leakage.

Description of the drawings

Figure 1 is a schematic structural diagram of the spring piece in Embodiment 1.

Figure 2 is a top view of the elastic piece in Embodiment 1.

Figure 3 is a schematic structural diagram of the elastic piece in Embodiment 2.

Figure 4 is a top view of the elastic piece in Embodiment 2.

Figure 5 is a schematic structural diagram of the elastic piece in Embodiment 3.

Figure 6 is a top view of the elastic piece in Embodiment 3.

FIG. 7 is an enlarged view of part I in FIG. 5 .

Figure 8 is a schematic structural diagram of the spring piece in Embodiment 4.

Figure 9 is an exploded view of the shrapnel in Embodiment 4.

Figure 10 is a top view of the elastic piece in Embodiment 4.

Figure 11 is a schematic structural diagram of the bone conduction vibration sound-generating device in Embodiment 5.

Fig. 12 is a cross-sectional view of the bone conduction vibration sound-generating device in Embodiment 5.

FIG. 13 is a schematic structural diagram of the bone conduction vibration sound-generating device in Embodiment 5 from another perspective.

Figure 14 is a schematic structural diagram of the bone conduction vibration sound-generating device in Embodiment 6.

Figure 15 is a schematic structural diagram of the bone conduction vibration sound-generating device in Embodiment 7.

Figure 16 is a schematic structural diagram of part of the temples of the bone conduction glasses in Embodiment 8.

Figure 17 is a cross-sectional view of part of the temples of the bone conduction glasses in Embodiment 8.

Figure 18 is a schematic structural diagram of the bone conduction vibration sound-generating device in Embodiment 8 when it is connected to the second shell.

Detailed ways

In order to make the above objects, features and advantages of the present application more obvious and understandable, the following is provided in conjunction with the accompanying drawings. The specific implementation manner of the present application will be described in detail. It can be understood that the specific embodiments described here are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for convenience of description, only some but not all structures related to the present application are shown in the drawings. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

The terms "including" and "having" and any variations thereof in this application are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes Other steps or units inherent to such processes, methods, products or devices.

Reference herein to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

Example 1

As shown in Figures 1 and 2, the elastic piece corresponding to a preferred embodiment of the present invention includes an outer bracket 1, a connecting plate 2 arranged in the outer bracket 1, and a connecting plate 2 connected between the outer bracket 1 and the connecting plate 2. The two elastic arms 3.

Usually, when the elastic piece is in use, its outer bracket 1 is fixed, and the connecting plate 2 is connected to the vibrator. When the vibrator vibrates, the connecting plate 2 reciprocates with the vibrator, and the elastic arm 3 elastically deforms to provide reset. force.

In this embodiment, the outer bracket 1 includes two rod bodies 10 respectively located on both sides of the connecting plate 2. Two elastic arms 3 are also located on both sides of the connecting plate 2, and the two elastic arms 3 are located between the rod body 10 and the connecting plate 2. between.

The elastic arm 3 includes a body 30 and a first connecting part 31 , a second connecting part 32 and a third connecting part 33 that are all connected to the body 30 (refer to FIG. 2 , in which the dividing lines of each part are shown with dotted lines). The first connecting portion 31 and the second connecting portion 32 both protrude toward the direction of the connecting plate 2 and are connected to the connecting plate 2 . The third connecting portion 33 extends toward the direction of the rod body 10 and is connected to the rod body 10 . The third connecting part 33 is located between the first connecting part 31 and the second connecting part 32 .

It can be understood that there are between the main body 30 and the rod 10 of the outer bracket 1 and between the connecting plate 2 The gap 11 is provided so that the elastic arm 3 can deform smoothly.

By arranging two connecting parts (the first connecting part 31 and the second connecting part 32) located on both sides of the third connecting part 33 to connect with the connecting plate 2, the structure of the elastic arm 3 can be made more stable, and it will not be easy to vibrate when the vibrator vibrates. Swinging occurs. At the same time, the space between the connecting plate 2 and the outer bracket 1 can be more fully utilized. The elastic arm 3 has a longer length and a guaranteed width. The processing of the elastic pieces is more convenient, and the work reliability is higher.

As a preferred embodiment, the first connecting part 31 and the second connecting part 32 are connected to the two ends of the body 30 respectively. In this way, the body 30 does not have any extra protruding parts, the structure is more compact, and the elastic arm 3 is longer in length and makes full use of the separation space.

As a preferred embodiment, the rod body 10, the main body 2 and the elastic arm 3 are all strip-shaped and arranged side by side, and the three are parallel to each other.

As a preferred embodiment, the length D1 of the third connecting part 33 is greater than the sum of the length D2 of the first connecting part 31 and the length D3 of the second connecting part 32. The length direction of the elastic piece refers to the length along the first center. The direction of the line 40, the length direction of the first connection part 31, the second connection part 32 and the third connection part 33 are consistent with the length direction of the elastic piece. Further preferably, the length D2 of the first connecting part 31 is equal to the length D3 of the second connecting part 32 , and the length D1 of the third connecting part 33 is greater than four times the length D2 of the first connecting part 31 . In this way, the connection between the third connecting part 33 and the rod body 10 is stronger, and the stability of the spring arm 3 is better.

As a preferred embodiment, the whole body formed by the connecting plate 2 and the two elastic arms 3 has a first center line 4 and a second center line 40 that are perpendicular to each other, and the whole body formed by the connecting plate 2 and the two elastic arms 3 is The first center line 4 and the second center line 40 are axially symmetrical. In this way, the width of the whole formed by the connecting plate 2 and the two elastic arms 3 is wider and strictly symmetrical with the first center line 4 and the second center line 40, ensuring that Rigidity and stability during vibration, the entire shrapnel can move parallel along the Z-axis direction (thickness direction) when vibrating, further suppressing the left and right swing (rolling vibration) of the shrapnel in the 40 direction of the center line, ensuring the vibration stability of the vibrator unit , reducing distortion. Further preferably, the elastic piece is also axially symmetrical about the first centerline 4 and the second centerline 40 .

As a preferred embodiment, the elastic piece is made of stainless steel.

Example 2

As shown in FIGS. 3 and 4 , the difference between Embodiment 2 and Embodiment 1 is that the outer bracket 1 in Embodiment 2 is annular and surrounds the outer periphery of the connecting plate 2 . The outer bracket 1 also includes two rods 10 arranged side by side. It can be understood that in Embodiment 1, a cross bar 11 is connected to both ends of the two rods 10 to form a ring. The outer bracket 1.

In this embodiment, since the outer bracket 1 is annular, its strength and stiffness are better than those of the outer bracket 1 in Embodiment 1, and bending deformation is less likely to occur.

Example 3

As shown in FIGS. 5 to 7 , Embodiment 3 is a modification based on Embodiment 2. The elastic piece in Embodiment 3 further includes a plurality of elastic connecting arms 5 connected to the outer bracket 1 . When in use, the outer bracket 1 of the elastic piece is connected to the outer frame of the bone conduction vibration sound-generating device, and the elastic connecting arm 5 extends to the outside of the outer frame for fixing to an external fixture (such as a shell). In this way, the bone During the vibration process of the vibration-conducting sound-producing device, its overall vibration can be damped by the elastic connecting arm 5, thereby reducing the vibration transmitted to external fixtures.

As a preferred embodiment, at least two elastic connecting arms 5 are connected to both ends of the outer bracket 1. As shown in Figures 5 and 6, in this embodiment, two cross bars 11 of the outer bracket 1 are provided with There are two elastic connecting arms 5 extending outward. After the elastic connecting arm 5 is provided, the entire elastic piece is still axially symmetrical about the first center line 4 and the second center line 40, so that the overall force during vibration is more balanced.

As a preferred embodiment, the elastic connecting arm 5 includes a strip-shaped arm part 50 and a connecting foot 51 connected to the arm part 50. The arm part 50 is mainly used to provide elastic restoring force, and the connecting foot 51 is mainly used to connect with the outside. Fixture connection. The width B1 of the connecting foot 51 is greater than or equal to the width B2 of the arm 50 . It can be in a straight line with the arm 50 , or can be set at an angle to the arm 50 , such as a right angle, an obtuse angle or an acute angle. Preferably, the width B1 of the connecting foot 51 is larger than the width of the arm 50 and is arranged at right angles to the arm 50 so that the contact area between the connecting foot 51 and the external fixture is larger and the connection is stronger. In this embodiment, the width B1 of the connecting leg 51 is twice the width B2 of the arm 50 . Further, a through hole 52 is provided on the connecting foot 51 to facilitate positioning with an external fixture.

Example 4

As shown in Figures 8 to 10, Embodiment 4 is a modification based on Embodiment 2. Specifically, the elastic piece in Embodiment 4 also includes an annular frame 6 and several elastic connecting arms connected to the annular frame 6. 5. The outer bracket 1 is connected to the annular frame 6 and the two are stacked up and down.

The annular frame 6 is annular, and its central hole 60 is arranged corresponding to the elastic arm 3 and the connecting plate 2 of the elastic piece, so as to avoid the connecting plate 2 and the elastic arm 3 during their movement. As a preferred embodiment, the cross-sectional shape and size of the annular frame 6 are the same as those of the outer frame 1, and the two completely overlap when viewed from above or below.

In this embodiment, the number of elastic connecting arms 5 is also four, and two elastic connecting arms 5 are respectively connected to the two short sides of the annular frame 6 . In other embodiments, the number of elastic connecting arms 5 can be increased or decreased as appropriate.

The description of the function and structure of the elastic connecting arm 5 may refer to Embodiment 3, and will not be described again here.

Similarly, as a preferred embodiment, referring to Figure 10, in this embodiment, the entire elastic piece is axially symmetrical about the first center line 4 and the second center line 40, so that the overall force during vibration is more balanced.

Example 5

As shown in Figures 11 to 13, Embodiment 5 discloses a bone conduction vibration sound device, which includes an outer frame 82, a vibrator 83, a coil 85, a magnet 86 and the elastic piece 84 described in Embodiment 2.

The outer frame 82 includes a base plate 820 and a surrounding plate 821 connected to the outer edge of the base plate 820 . The vibrator 83 , the coil 85 and the magnet 86 are all located in the space formed between the base plate 820 and the surrounding plate 821 . The coil 85 and the magnet 86 are both connected to the substrate 820 , and the coil 85 surrounds the outer periphery of the magnet 86 . The elastic piece 84 is connected to the open end of the outer frame 82 , the outer bracket 1 is connected to the end surface of the outer frame 82 , and the connecting plate 2 is connected to the vibrator 83 .

The vibrator 83 is made of magnetic material, and is arranged opposite to the magnet 86 with the same pole, and there is a repulsive force between the two. The outer frame 82 is made of magnetically conductive material, and has an attraction force between it and the vibrator 83. Preferably, the repulsive force between the vibrator 83 and the magnet 86 and the attraction force between the vibrator 83 and the outer frame 82 are equal in magnitude and opposite in direction. The two cancel each other out, so that the vibrator 83 is in a static equilibrium state. The coil 85 is energized to generate a magnetic field that drives the vibrator 83 to vibrate. When the vibrator 83 is in a static equilibrium state, the vibrator 83 responds more quickly to changes in the magnetic field and has higher sensitivity.

In addition, since the elastic piece structure in Embodiment 2 is adopted, the vibrator 83 is more stable during the vibration process and is less likely to cause rolling vibration.

Example 6

As shown in Figure 14, Embodiment 6 is a change based on Embodiment 5. The difference between Embodiment 6 and Embodiment 5 is that the elastic piece 84 of the bone conduction vibration sound generating device in Embodiment 6 is the same as that in Embodiment 3. The shrapnel described above.

Example 7

As shown in Figure 15, Embodiment 7 is a change based on Embodiment 5. The difference between Embodiment 7 and Embodiment 5 is that the elastic piece 84 of the bone conduction vibration sound generating device in Embodiment 7 is the same as that in Embodiment 4. The shrapnel described above.

Example 8

Embodiment 8 discloses a kind of bone conduction glasses, as shown in Figures 16 to 18, which show part of the structure of the temples of the bone conduction glasses. The bone conduction glasses include a first shell 9 and a second shell 90 and bone conduction vibration sound device 8.

The first housing 9 and the second housing 90 are connected, and a receiving cavity 91 is formed between them. The bone conduction vibration sound-generating device 8 is disposed in the receiving cavity 91 .

In this embodiment, the bone conduction vibration sound generating device 8 is the bone conduction vibration sound generating device described in Embodiment 6 or Embodiment 7. It can be understood that in other embodiments, the bone conduction vibration and sound-generating device 8 can also be the bone conduction vibration and sound-generating device described in Embodiment 5, and the elastic piece thereof does not have the elastic connecting arm 5 .

In this embodiment, the outer frame 82 of the bone conduction vibration sound-generating device 8 is connected to the first housing 9 , and the elastic piece 84 is connected to the second housing 90 through its elastic connecting arm 5 . Specifically, the second housing 90 is provided with two bosses 92 protruding toward the first housing 9. The two elastic connecting arms 5 at both ends of the elastic piece 84 are connected to the bosses 92 through their connecting feet 51. The connection method can be, for example, Is it gluing or welding, etc.

Since the bone conduction vibration sound-generating device 8 and the second housing 90 are connected through the elastic connecting arm 5, and the two are elastically connected, the elastic connecting arm 5 can play a role in reducing vibration and reduce the vibration of the bone conduction vibration sound-generating device 8. Vibration transmitted to the second housing 90 .

As a preferred embodiment, the first housing 9 includes a silicone pad 93. One end of the silicone pad 93 is exposed to the outside world for contact with the human facial skin, and the other end is exposed in the receiving cavity 91. The outer frame 82 is connected with the silicone pad 93. Pad 93 is connected. Since the silicone pad 93 is relatively soft, it can play a cushioning role and further reduce the vibration of the bone conduction vibration sound-generating device 8 from being transmitted to the first housing 9 . In this way, the vibration transmission between the bone conduction vibration sounding device 8 and the first housing 9 and the second housing 90 can be reduced, thereby reducing sound leakage caused by the vibration of the housing. At the same time, the bone conduction vibration sounding device 8 drives the housing The energy of vibration is reduced, which is beneficial to reducing energy consumption.

It can be understood that since the above-mentioned shrapnel and bone conduction vibration and sound device are both in strip shape, it is more convenient to be combined into the temples of bone conduction glasses and has less impact on the cross-sectional area of the temples. Conductive glasses are more comfortable to wear.

The above are only specific embodiments of the present invention, and any other improvements made based on the concept of the present invention are deemed to be within the protection scope of the present invention.

Claims

A kind of shrapnel, which is characterized by including:

Outer bracket(1);

The connecting plate (2) is located in the outer bracket (1); and,

Two elastic arms (3), the two elastic arms (3) are arranged side by side with the connecting plate (2), and are respectively located on both sides of the connecting plate (2). The elastic arms (3) include a body (30), the first connecting part (31) and the second connecting part (32) connected to the connecting plate (2) and the third connecting part (33) connected to the outer bracket (1), the The third connection part (33) is located between the first connection part (31) and the second connection part (32).
The spring piece according to claim 1, characterized in that the first connection part (31) and the second connection part (32) are connected to both ends of the body (30), and the third connection part (30) 33) Connected to the middle part of the body (30).
The elastic piece according to claim 1, characterized in that the connecting plate (2) and the two elastic arms (3) as a whole have a first center line (4) and a second center line (4) that are perpendicular to each other. 40), the whole body formed by the connecting plate (2) and the two elastic arms (3) is axially symmetrical about the first centerline (4) and the second centerline (40).
The elastic piece according to claim 1, characterized in that the outer bracket (1) includes two rods (10) located on both sides of the connecting plate (2), and the third connecting portion (33) connects Between the main body (30) and the rod body (10).
The elastic piece according to claim 4, characterized in that the rod body (10), the connecting plate (2) and the main body (30) are all strip-shaped.
The elastic piece according to claim 1, characterized in that the outer bracket (1) is annular and surrounds the outer periphery of the connecting plate (2).
The spring piece according to claim 1, characterized in that the length of the third connecting part (33) is greater than the sum of the lengths of the first connecting part (31) and the second connecting part (32).
The elastic piece according to any one of claims 1 to 7, characterized in that the elastic piece further includes a plurality of elastic connecting arms (5) connected to the outer bracket (1).
The spring piece according to claim 8, characterized in that the elastic connecting arm (5) includes a The arm portion (50) connected to the outer bracket (1) and the connecting foot (51) connected to the arm portion (50), the width of the connecting foot (51) is greater than or equal to the arm portion (50) width.
The spring piece according to claim 8, characterized in that it also includes an annular frame (6) and a plurality of elastic connecting arms (5) connected to the annular frame (6), and the outer bracket (1) and the The ring frames (6) are connected and stacked up and down.
A bone conduction vibration sound-generating device, characterized by comprising the elastic piece according to any one of claims 1 to 10.
A kind of bone conduction glasses, characterized by including:

first housing (9);

The second housing (90) is connected to the first housing (9), and a receiving cavity (91) is formed between the first housing (9) and the second housing (90); and,

A bone conduction vibration sounding device (8) is located in the receiving cavity (91). The bone conduction vibration sounding device includes an outer frame (82) connected to the first shell (9), and is located in the receiving cavity (91). The vibrator (83) in the outer frame (82) and the elastic piece (84) according to any one of claims 8 to 10;

Wherein, the outer bracket (1) of the elastic piece (84) is connected to the outer frame (82), the vibrator (83) is connected to the connecting plate (2) of the elastic piece (84), and the elastic piece (84) is connected to the connecting plate (2) of the elastic piece (84). The elastic connecting arm (5) of 84) is connected to the second housing (90).