Shrapnel, bone conduction vibration sound generating device and bone conduction glasses

Abstract

The present invention discloses a shrapnel, a bone conduction vibration sound-generating device, and bone conduction glasses. The shrapnel includes an outer bracket, a connecting plate, and an elastic arm. The connecting plate is located inside the outer bracket; and 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 arm includes a body, a first connecting portion and a second connecting portion connected to the connecting plate, and a third connecting portion connected to the outer bracket, and the third connecting portion is located between the first connecting portion and the second connecting portion. In the present invention, the structure of the elastic arm is more stable, the connecting plate has better directionality when vibrating, and is less likely to swing, thereby reducing the risk of rolling vibration of the vibrator connected to the connecting plate. The bone conduction vibration sound-generating device with the shrapnel has better working reliability.

Description

Technical Field

[0001] 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 Art

[0002] At present, wearable devices such as bone conduction headphones and bone conduction glasses usually use bone conduction vibration sound-generating devices to vibrate and produce sound. The vibrator of the bone conduction vibration sound-generating device usually vibrates under the action of a magnetic field and is reset by a spring. The spring usually includes a central plate, an outer bracket surrounding the outer periphery of the central plate, and several arc-shaped spring arms with both ends connected between the central plate and the outer bracket. The vibrator is connected to the central plate and is reset by the elastic force of the spring arm.

[0003] When the bone conduction vibration sound-generating device is in the shape of a long and narrow strip, the vibrator, shrapnel and other parts are also in the shape of a strip accordingly. It is difficult to process using a traditional shrapnel structure, and the size of the center plate and the spring arm is difficult to guarantee. In addition, since the length and width of the vibrator are relatively large, the vibrator of the bone conduction vibration sound-generating device using a traditional shrapnel structure is prone to swinging from side to side during vibration, causing rolling vibration, causing noise, distortion and other adverse phenomena, which is not conducive to the normal operation of the bone conduction vibration sound-generating device.

[0004] Therefore, it is necessary to improve the prior art to overcome the above defects. Summary of the Invention

[0005] The object of the present invention is to provide a shrapnel, a bone conduction vibration sound-generating device and bone conduction glasses. When the bone conduction vibration sound-generating device using the shrapnel vibrates, its vibrator is not prone to rolling vibration.

[0006] To achieve the above-mentioned object of the invention, in a first aspect, the present invention provides a spring fragment, comprising:

[0007] External bracket;

[0008] a connecting plate located inside the outer bracket; and

[0009] 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 arm includes a main body, a first connecting part and a second connecting part connected to the connecting plate, and a third connecting part connected to the outer bracket. The third connecting part is located between the first connecting part and the second connecting part.

[0010] Furthermore, the first connection portion and the second connection portion are connected to two ends of the body, and the third connection portion is connected to the middle of the body.

[0011] Furthermore, the whole formed by the connecting plate and the two elastic arms has a first center line and a second center line that are perpendicular to each other, and the whole formed by the connecting plate and the two elastic arms is axially symmetrical about the first center line and the second center line.

[0012] Furthermore, the outer bracket includes two rods respectively located on both sides of the connecting plate, and the third connecting portion is connected between the main body and the rods.

[0013] Furthermore, the rod body, the connecting plate and the main body are all in a strip shape.

[0014] Furthermore, the outer bracket is annular and surrounds the outer circumference of the connecting plate.

[0015] Furthermore, the length of the third connecting portion is greater than the sum of the lengths of the first connecting portion and the second connecting portion.

[0016] Furthermore, the spring piece also includes a plurality of elastic connecting arms connected to the outer bracket.

[0017] Furthermore, the elastic connecting arm includes an arm portion connected to the outer bracket and a connecting foot connected to the arm portion, and a width of the connecting foot is greater than or equal to a width of the arm portion.

[0018] Furthermore, the spring piece further includes an annular frame and a plurality of elastic connecting arms connected to the annular frame, and the outer bracket is connected to the annular frame and the two are stacked up and down.

[0019] In a second aspect, the present invention provides a bone conduction vibration sound-generating device, comprising a shrapnel as described in any one of the items.

[0020] In a third aspect, the present invention provides bone conduction glasses, comprising:

[0021] a first shell;

[0022] A second shell is connected to the first shell, and a receiving cavity is formed between the first shell and the second shell; and

[0023] A bone conduction vibration sound-generating device is disposed in the receiving cavity, the bone conduction vibration sound-generating device comprising an outer frame connected to the first shell, a vibrator and a spring disposed in the outer frame;

[0024] The outer bracket of the spring is connected to the outer frame, the vibrator is connected to the connecting plate of the spring, and the elastic connecting arm of the spring is connected to the second shell.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. In the present invention, elastic arms are provided on both sides of the connecting plate of the shrapnel. The elastic arms have a first connecting portion and a second connecting portion for connecting to the connecting plate and a third connecting portion for connecting to the external bracket. The third connecting portion is located between the first connecting portion and the second connecting portion, so that the structure of the elastic arm is more stable, the connecting plate has better directionality when vibrating and is less likely to swing, thereby reducing the risk of rolling vibration of the vibrator connected to the connecting plate. The bone conduction vibration sound-generating device with the shrapnel has better working reliability.

[0027] 2. As an improvement, the shrapnel also includes a plurality of elastic connecting arms connected to the external bracket. The shrapnel can be connected to the external fixture through the elastic connecting arms. In this way, the bone conduction vibration sound-generating device with the shrapnel can play a vibration-reducing role when vibrating, reducing the vibration transmitted to the external fixture, thereby reducing sound leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of the shrapnel in Example 1.

[0029] Figure 2 3. It is a top view of the spring piece in Example 1.

[0030] Figure 3 It is a structural diagram of the shrapnel in Example 2.

[0031] Figure 4 It is a top view of the spring piece in Example 2.

[0032] Figure 5 It is a structural diagram of the shrapnel in Example 3.

[0033] Figure 6 It is a top view of the spring piece in Example 3.

[0034] Figure 7 yes Figure 5 Enlarged view of part I in the middle.

[0035] Figure 8 It is a structural diagram of the shrapnel in Example 4.

[0036] Figure 9 This is an exploded view of the shrapnel in Example 4.

[0037] Figure 10 This is a top view of the shrapnel in Example 4.

[0038] Figure 11 This is a schematic diagram of the structure of the bone conduction vibration sound-generating device in Example 5.

[0039] Figure 12 This is a cross-sectional view of the bone conduction vibration sound-generating device in Example 5.

[0040] Figure 13 This is a structural diagram of the bone conduction vibration sound-generating device in Example 5 from another perspective.

[0041] Figure 14 It is a structural diagram of the bone conduction vibration sound-generating device in Example 6.

[0042] Figure 15 It is a structural diagram of the bone conduction vibration sound-generating device in Example 7.

[0043] Figure 16 This is a schematic diagram of the structure of some temples of the bone conduction glasses in Example 8.

[0044] Figure 17 This is a cross-sectional view of part of the temples of the bone conduction glasses in Example 8.

[0045] Figure 18 It is a structural diagram of the bone conduction vibration sound-generating device in Example 8 when it is connected to the second shell. DETAILED DESCRIPTION

[0046] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It will be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some, rather than all, structures related to the present application are shown in the accompanying drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0047] As used herein, the terms "comprise," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0048] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0049] Example 1

[0050] like Figure 1 and Figure 2As shown, a spring 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 two spring arms 3 connected between the outer bracket 1 and the connecting plate 2.

[0051] Typically, when the spring 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 spring arm 3 undergoes elastic deformation to provide a reset force.

[0052] In this embodiment, the outer bracket 1 includes two rod bodies 10 respectively located on both sides of the connecting plate 2 , and two elastic arms 3 are also located on both sides of the connecting plate 2 , and both elastic arms 3 are located between the rod bodies 10 and the connecting plate 2 .

[0053] The elastic arm 3 includes a body 30 and a first connecting portion 31, a second connecting portion 32 and a third connecting portion 33 all connected to the body 30 (refer to Figure 2 , Figure 2 The boundaries between the various parts are indicated by dashed lines. The first connecting portion 31 and the second connecting portion 32 both protrude toward the connecting plate 2 and are connected to the connecting plate 2. The third connecting portion 33 extends toward the rod body 10 and is connected to the rod body 10. The third connecting portion 33 is located between the first connecting portion 31 and the second connecting portion 32.

[0054] It is understandable that there are gaps 11 between the main body 30 and the rod body 10 of the outer bracket 1 and between the main body 30 and the connecting plate 2 so that the elastic arm 3 can deform smoothly.

[0055] By providing two connecting portions (first connecting portion 31 and second connecting portion 32) on either side of third connecting portion 33, connected to connecting plate 2, the structure of elastic arm 3 is made more stable, making it less likely to wobble during vibrator vibration. Furthermore, the space between connecting plate 2 and outer bracket 1 is more fully utilized, allowing elastic arm 3 to be longer and wider, making it easier to manufacture the elastic piece and achieving higher operational reliability.

[0056] As a preferred embodiment, the first connecting portion 31 and the second connecting portion 32 are respectively connected to the two ends of the main body 30. In this way, the main body 30 does not have any redundant protruding parts, the structure is more compact, and the length of the elastic arm 3 is longer, so that the interval space is more fully utilized.

[0057] As a preferred embodiment, the rod body 10, the main body 30 and the connecting plate 2 are all strip-shaped and arranged side by side, and the three are parallel to each other.

[0058] In a preferred embodiment, the length D1 of the third connecting portion 33 is greater than the sum of the length D2 of the first connecting portion 31 and the length D3 of the second connecting portion 32. The length direction of the spring refers to its direction along the first centerline 40. The length directions of the first connecting portion 31, the second connecting portion 32, and the third connecting portion 33 are consistent with the length direction of the spring. Furthermore, preferably, the length D2 of the first connecting portion 31 is equal to the length D3 of the second connecting portion 32, and the length D1 of the third connecting portion 33 is greater than four times the length D2 of the first connecting portion 31. This ensures a more secure connection between the third connecting portion 33 and the rod body 10, and enhances the stability of the elastic arm 3.

[0059] As a preferred embodiment, the entirety formed by the connecting plate 2 and the two elastic arms 3 has a first centerline 4 and a second centerline 40 that are perpendicular to each other, and the entirety formed by the connecting plate 2 and the two elastic arms 3 is symmetrical about the first centerline 4 and the second centerline 40. In this way, the width of the entirety formed by the connecting plate 2 and the two elastic arms 3 is relatively wide and strictly symmetrical along the first centerline 4 and the second centerline 40, ensuring rigidity and stability during vibration. The entire shrapnel can move parallel to the Z-axis (thickness direction) during vibration, further suppressing the shrapnel from swinging left and right (rolling vibration) in the direction of the centerline 40, ensuring the vibration stability of the vibrator unit and reducing distortion. Further preferably, the shrapnel is also symmetrical about the first centerline 4 and the second centerline 40.

[0060] As a preferred embodiment, the spring piece is made of stainless steel.

[0061] Example 2

[0062] like Figure 3 and Figure 4 As shown, the difference between Example 2 and Example 1 is that the outer bracket 1 in Example 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 the two rods 10 in Example 1 are connected to a cross bar 11 at both ends to form the annular outer bracket 1.

[0063] In this embodiment, since the outer bracket 1 is annular, its strength and rigidity are better than those of the outer bracket 1 in Example 1, and it is not easy to bend or deform.

[0064] Example 3

[0065] like Figures 5 to 7As shown, Example 3 is a variation of Example 2, in which the spring piece further includes a plurality of elastic connecting arms 5 connected to the outer bracket 1. When in use, the outer bracket 1 of the spring piece is connected to the outer frame of the bone conduction vibration sound-generating device, and the elastic connecting arms 5 extend to the outside of the outer frame and are used to be fixed to an external fixture (such as a housing). In this way, during the vibration of the bone conduction vibration sound-generating device, its overall vibration can be damped by the elastic connecting arms 5, thereby reducing the vibration transmitted to the external fixture.

[0066] As a preferred embodiment, at least two elastic connecting arms 5 are connected to both ends of the outer bracket 1. Figure 5 and Figure 6 As shown, in this embodiment, two outwardly extending elastic connecting arms 5 are provided on the two crossbars 11 of the outer bracket 1. After the elastic connecting arms 5 are provided, the entire spring piece is still symmetrical about the first center line 4 and the second center line 40, so that the overall force is more balanced during vibration.

[0067] As a preferred embodiment, the elastic connecting arm 5 includes a strip-shaped arm portion 50 and a connecting foot 51 connected to the arm portion 50. The arm portion 50 is mainly used to provide elastic restoring force, and the connecting foot 51 is mainly used to connect to an external fixture. The width B1 of the connecting foot 51 is greater than or equal to the width B2 of the arm portion 50. It can be in a straight line with the arm portion 50, or it can be set at an angle to the arm portion 50, such as a right angle, an obtuse angle, or an acute angle. Preferably, the width B1 of the connecting foot 51 is greater than the width of the arm portion 50, and is set at a right angle to the arm portion 50, so that the contact area between the connecting foot 51 and the external fixture is larger and the connection is more secure. In this embodiment, the width B1 of the connecting foot 51 is twice the width B2 of the arm portion 50. Furthermore, a through hole 52 is provided on the connecting foot 51 to facilitate positioning between the connecting foot and the external fixture.

[0068] Example 4

[0069] like Figures 8 to 10 As shown, Example 4 is a variation on Example 2. Specifically, the spring piece in Example 4 also includes an annular frame 6 and a plurality of elastic connecting arms 5 connected to the annular frame 6. The outer bracket 1 is connected to the annular frame 6 and the two are stacked up and down.

[0070] The annular frame 6 is annular, with a central hole 60 corresponding to the spring arm 3 and the connecting plate 2 of the spring clip, so as to avoid the connection plate 2 and the spring 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 bracket 1, and the two completely overlap when viewed from above or below.

[0071] In this embodiment, the number of the elastic connecting arms 5 is also four, and the two short sides of the annular frame 6 are respectively connected to two elastic connecting arms 5. In other embodiments, the number of the elastic connecting arms 5 can be increased or decreased as appropriate.

[0072] The description of the function and structure of the elastic connecting arm 5 can be referred to Example 3 and will not be repeated here.

[0073] Similarly, as a preferred embodiment, refer to Figure 10 In this embodiment, the spring piece is symmetrical about the first center line 4 and the second center line 40, so that the overall force is more balanced during vibration.

[0074] Example 5

[0075] like Figures 11 to 13 As shown, Example 5 discloses a bone conduction vibration sound-generating device, which includes an outer frame 82, a vibrator 83, a coil 85, a magnet 86 and the spring 84 described in Example 2.

[0076] The outer frame 82 includes a base plate 820 and a panel 821 connected to the outer edge of the base plate 820. The vibrator 83, coil 85, and magnet 86 are all located in the space formed between the base plate 820 and the panel 821. The coil 85 and magnet 86 are both connected to the base plate 820, with the coil 85 surrounding the magnet 86. The spring 84 is connected to the open end of the outer frame 82. Its outer bracket 1 is connected to the end face of the outer frame 82, and the connecting plate 2 is connected to the vibrator 83.

[0077] Vibrator 83 is made of a magnetic material and is disposed opposite magnet 86 with the same polarity, generating a repulsive force between the two. Outer frame 82 is made of a magnetically conductive material and generates an attractive force between it and vibrator 83. Preferably, the repulsive force between vibrator 83 and magnet 86 and the attractive force between vibrator 83 and outer frame 82 are equal in magnitude and opposite in direction, canceling each other out and placing vibrator 83 in a state of static equilibrium. Coil 85 is used to generate a magnetic field that drives vibrator 83 to vibrate. When vibrator 83 is in a state of static equilibrium, vibrator 83 responds more quickly to changes in the magnetic field and has a higher sensitivity.

[0078] In addition, due to the adoption of the spring structure in the second embodiment, the vibrator 83 is more stable during the vibration process and is less likely to suffer from the undesirable phenomenon of rolling vibration.

[0079] Example 6

[0080] like Figure 14 As shown, Example 6 is a variation based on Example 5. The difference between Example 6 and Example 5 is that the shrapnel 84 of the bone conduction vibration sound-generating device in Example 6 is the shrapnel described in Example 3.

[0081] Example 7

[0082] like Figure 15 As shown, Example 7 is a variation based on Example 5. The difference between Example 7 and Example 5 is that the shrapnel 84 of the bone conduction vibration sound-generating device in Example 7 is the shrapnel described in Example 4.

[0083] Example 8

[0084] Example 8 discloses a bone conduction glasses, such as Figures 16 to 18 As shown in the figure, the partial structure of the temples of bone conduction glasses is shown, and the bone conduction glasses include a first shell 9, a second shell 90 and a bone conduction vibration sound-generating device 8.

[0085] The first shell 9 and the second shell 90 are connected to each other, and a receiving cavity 91 is formed therebetween. The bone conduction vibration sound generating device 8 is disposed in the receiving cavity 91 .

[0086] In this embodiment, the bone conduction vibration sound-generating device 8 is the bone conduction vibration sound-generating device described in Example 6 or Example 7. It is understood that in other embodiments, the bone conduction vibration sound-generating device 8 can also be the bone conduction vibration sound-generating device described in Example 5, whose spring piece does not have the elastic connecting arm 5.

[0087] 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 spring 84 is connected to the second housing 90 via its elastic connecting arm 5. Specifically, the second housing 90 is provided with two bosses 92 protruding toward the first housing 9, and the two elastic connecting arms 5 at both ends of the spring 84 are connected to the bosses 92 via their connecting legs 51, for example, by gluing or welding.

[0088] Since the bone conduction vibration sound-generating device 8 and the second shell 90 are connected via the elastic connecting arm 5 and are elastically connected, the elastic connecting arm 5 can play a vibration-reducing role, thereby reducing the vibration transmitted from the bone conduction vibration sound-generating device 8 to the second shell 90.

[0089] As a preferred embodiment, the first shell 9 includes a silicone pad 93, one end of which is exposed to the outside world for contact with the skin of the human face, and the other end is exposed within the receiving cavity 91. The outer frame 82 is connected to the silicone pad 93. Because the silicone pad 93 is relatively soft, it can act as a shock absorber, further reducing the vibration of the bone conduction vibration sound-generating device 8 from being transmitted to the first shell 9. In this way, the vibration transmission between the bone conduction vibration sound-generating device 8 and the first shell 9 and second shell 90 can be reduced, thereby reducing sound leakage caused by shell vibration. At the same time, the energy of the bone conduction vibration sound-generating device 8 driving the shell vibration is reduced, which helps to reduce energy consumption.

[0090] It can be understood that since the above-mentioned shrapnel and bone conduction vibration sound-generating device are both in the shape of strips, it is more convenient to integrate them into the temples of bone conduction glasses, and the size of the cross-sectional area of ​​the temples is less affected, making the bone conduction glasses more comfortable to wear.

[0091] The above is only a specific embodiment of the present invention, and any other improvements made based on the concept of the present invention are considered to be within the protection scope of the present invention.

Claims

1. A shrapnel, characterized in that: The shrapnel is a shrapnel of a bone conduction vibration sound-generating device, which includes: External support (1); a connecting plate (2) located inside 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 arm (3) comprises a body (30), a first connecting portion (31) and a second connecting portion (32) connected to the connecting plate (2), and a third connecting portion (33) connected to the outer bracket (1), the third connecting portion (33) being located between the first connecting portion (31) and the second connecting portion (32); The first connecting portion (31) and the second connecting portion (32) are connected to two ends of the body (30), and the third connecting portion (33) is connected to the middle of the body (30); The length of the third connecting portion (33) is greater than the sum of the lengths of the first connecting portion (31) and the second connecting portion (32).

2. The shrapnel according to claim 1, wherein: The whole 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 formed by the connecting plate (2) and the two elastic arms (3) is symmetrical about the first center line (4) and the second center line (40).

3. The shrapnel according to claim 1, wherein: The outer bracket (1) comprises two rod bodies (10) respectively located on both sides of the connecting plate (2), and the third connecting portion (33) is connected between the main body (30) and the rod bodies (10).

4. The shrapnel according to claim 3, characterized in that: The rod body (10), the connecting plate (2) and the main body (30) are all strip-shaped and parallel to each other.

5. The shrapnel according to claim 1, wherein: The outer bracket (1) is annular and surrounds the outer periphery of the connecting plate (2).

6. The shrapnel according to any one of claims 1 to 5, characterized in that: The elastic sheet further comprises a plurality of elastic connecting arms (5) connected to the outer bracket (1).

7. The shrapnel according to claim 6, characterized in that: The elastic connecting arm (5) comprises an arm portion (50) connected to the outer bracket (1) and a connecting foot (51) connected to the arm portion (50), wherein the width of the connecting foot (51) is greater than or equal to the width of the arm portion (50).

8. The shrapnel according to claim 6, characterized in that: It also includes an annular frame (6) and a plurality of elastic connecting arms (5) connected to the annular frame (6). The outer bracket (1) is connected to the annular frame (6), and the two are stacked up and down.

9. A bone conduction vibration sound-generating device, characterized in that: The invention comprises a shrapnel as claimed in any one of claims 1 to 8.

10. A bone conduction glasses, characterized in that: include: A first housing (9); a second shell (90) connected to the first shell (9), a receiving cavity (91) being formed between the first shell (9) and the second shell (90); and A bone conduction vibration sound-generating device (8) is provided in the receiving cavity (91), the bone conduction vibration sound-generating device comprising an outer frame (82) connected to the first shell (9), a vibrator (83) provided in the outer frame (82), and a shrapnel (84) according to any one of claims 6 to 8; The outer bracket (1) of the spring (84) is connected to the outer frame (82), the vibrator (83) is connected to the connecting plate (2) of the spring (84), and the elastic connecting arm (5) of the spring (84) is connected to the second shell (90).

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