WO2023237098A1

WO2023237098A1 - Neckband, and bone conduction headphone

Info

Publication number: WO2023237098A1
Application number: PCT/CN2023/099391
Authority: WO
Inventors: 邓峰; 曹洪斌
Original assignee: 苏州索迩电子技术有限公司
Priority date: 2022-06-10
Filing date: 2023-06-09
Publication date: 2023-12-14
Also published as: CN218041713U

Abstract

The present invention relates to the technical field of headphones. Disclosed are a neckband and a bone conduction headphone. The neckband comprises an elastic metal wire (1), a conducting wire (2), and an outer wrap layer (3), which covers the elastic metal wire (1) and the conducting wire (2), wherein a middle portion (3a) of the outer wrap layer (3) is provided with an outwardly protruding reinforcing portion (30). In the present invention, by means of providing the outwardly protruding reinforcing portion at the middle portion of the neckband, the strength of the middle portion can be effectively improved, which on one hand is conducive to making the force on the neckband more balanced so as to maintain the balance of the bone conduction headphone during exercise, and on the other hand can also reduce deformation of the middle portion of the neckband to prevent plastic deformation of the elastic metal wire, which is conducive to ensuring the wearing comfort and stability of the neckband.

Description

A kind of neck-mounted wire and bone conduction earphone

Priority information: This application claims priority from Chinese patent application No. 202221455826.3, filed on June 10, 2022.

Technical field

The present invention relates to the technical field of earphones, and in particular, to a neck cord and a bone conduction earphone.

Background technique

Bone conduction headphones include two earphone heads for sound generation, a battery compartment for power supply, and a control compartment for controlling the sound of the earphone heads. The control compartment and battery compartment are connected to the headphone head through ear hooks, and the control compartment and battery compartment are connected through a neckband cable. Wires are provided in the ear hooks and neckbands to transmit electrical signals.

When bone conduction headphones are in use, the neck cord is wrapped around the back of the person's head, and the ear hooks are hooked on the person's ears to improve the stability of wearing the bone conduction headphones.

In the prior art, the neck strap is in the shape of an arc-shaped strip, which is prone to deformation. Especially when wearing headphones for exercise (such as running), the neck strap may be deformed due to uneven force, making the neck strap unfit for use. The cord pulls the headphone head into distortion, which affects the close fit between the headphone head and the skin, affecting the user experience. In addition, there is often an elastic metal wire inside the neckband cord to provide elasticity. Especially when the elastic metal wire twists up and down or bends and deforms, it will As a result, the wearing is not firm, the position after wearing does not meet the ergonomics and design intention, and the use experience becomes worse.

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 neck-mounted cord and a bone conduction earphone, which are not prone to plastic bending and twisting deformation.

In order to achieve the above-mentioned object, the present invention proposes a neckband, which includes an elastic metal wire, a conductor and an outer layer covering the elastic metal wire and the conductor. The middle part of the outer layer is provided with an outer protrusion. The reinforcement department.

Further, the reinforcing part protrudes toward the outside of the area enclosed by the outer skin layer.

Further, when the neck strap is placed horizontally, the reinforcing portion protrudes upward or downward, and the angle between the protruding direction and the vertical surface is 0 to 45°.

Further, the angle between the protruding direction and the vertical surface is 0 to 30°.

Further, the angle between the protruding direction and the vertical surface is 0 to 15°.

Further, the angle between the protruding direction and the vertical surface is 0°.

Further, a marker is provided on the outer side of the reinforcement part, and the marker is made of reflective material.

Further, the material of the outer layer is silica gel, and the hardness of the silica gel is 30 to 90 SHA.

Further, the hardness of the silica gel is 50-70 SHA.

Further, the hardness of the silica gel is 60 SHA.

Further, the cross-sectional size of the middle part of the neck-wearing wire is smaller than the cross-sectional size of other parts of the neck-wearing wire.

Further, the outer skin layer includes two arm portions respectively connected to two ends of the middle portion, and the cross-sectional dimensions of the arm portions gradually decrease from their ends toward the middle portion.

Further, the neckband cable further includes two connectors respectively connected to both ends of the outer layer, the end of the elastic metal wire is located in the connector, and the end of the elastic metal wire is provided There is at least one radially outwardly convex convex part and/or a radially inwardly concave recessed part.

Furthermore, the ratio of the height of the reinforcement part to the height of the outer skin layer of the part to which it is connected ranges from 25% to 150%, and the ratio of the length of the reinforcement part to the length of the outer skin layer ranges from 5% to 5%. 30%. The ratio of the thickness of the reinforcing part to the thickness of the outer skin layer of the part to which it is connected ranges from 30% to 80%.

Further, the ratio of the height of the reinforcement part to the height of the outer skin layer of the connected part ranges from 60% to 85%, and the ratio of the length of the reinforcement part to the length of the outer skin layer ranges from 10% to 20%. %, the ratio of the thickness of the reinforcing portion to the thickness of the outer skin layer of the connected portion ranges from 55% to 57%.

Further, the length of the reinforced portion is 25-45mm, the width is 3.5-6.5mm, and the thickness is 2-3mm.

On the other hand, the present invention also proposes a bone conduction earphone, including the neck cord as described in any one of the above items.

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

In the present invention, by arranging the convex reinforcing part in the middle part of the neck strap, the middle part can be effectively strengthened. On the one hand, it is helpful to make the force on the neckband more balanced and maintain the balance of the bone conduction earphones during exercise. On the other hand, since the middle part of the neckband is usually the place where the neckband is most susceptible to deformation and has the largest amount of deformation, strengthening this The strength at the position can reduce deformation, reduce the bending and torsional deformation of the neckband, and effectively prevent the elastic metal wire from plastic deformation due to excessive force, which is beneficial to ensuring the comfort and stability of wearing the neckband. In addition, the setting of the reinforcing part is also beneficial to improving the aesthetics of the neck strap.

Description of the drawings

Figure 1 is a schematic structural diagram of a neck strap according to an embodiment of the present invention.

FIG. 2 is an exploded view of the neck strap shown in FIG. 1 .

Figure 3 is a top view of the outer skin layer according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view along line A-A in FIG. 3 .

FIG. 5 is a schematic three-dimensional view of the outer skin layer shown in FIG. 3 .

FIG. 6 is an enlarged view of part I in FIG. 4 .

FIG. 7 is a lateral schematic view of the outer layer shown in FIG. 3 .

FIG. 8 is an enlarged view of part II in FIG. 2 .

Figure 9 is a schematic structural diagram of a bone conduction earphone according to an embodiment of the present invention.

Figure 10 is a side view of a bone conduction earphone according to an embodiment of the present invention. In the figure, the bone conduction earphone is in an open state when being worn.

FIG. 11 is a schematic diagram of the bone conduction earphone shown in FIG. 10 when the neck wire is set with its tail upward.

Detailed ways

In order to make the above objects, features and advantages of the present application more obvious and easy to understand, the specific implementation modes of the present application will be described in detail below with reference to the accompanying drawings. 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 unlisted steps or units. units, or optionally 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.

As shown in Figures 1 and 2, a neckband corresponding to a preferred embodiment of the present invention includes an elastic metal wire 1, a conductor 2, and an outer layer 3 covering the elastic metal wire 1 and the conductor 2.

The outer layer 3 is formed on the outside of the elastic metal wire 1 and the conductor 2 by injection molding. The elastic metal wire 1 can provide a restoring force to restore the neck strap to its original shape. The neck strap is usually curved so as to be easily wrapped around the back of the head. The outer cortex 3 itself and the elastic metal wire 1 are both elastic. When the neck strap is worn, When the head is on the head, it opens outward, so that the elastic metal wire 1 provides the clamping force to clamp the head. In this way, the earphone head of the bone conduction earphone can fit more closely with the person's head, and can obtain better results. Good sound quality.

The material of the elastic metal wire 1 is not limited. For example, it can be a metal element, an alloy material, or a composite material of a metal material and other non-metal materials. Preferably, the elastic metal wire 1 is a titanium wire.

The wire 2 is used to electrically connect with the control compartment 51 and the battery compartment 50 of the bone conduction earphone to transmit electrical signals.

As shown in Figure 3, the outer layer 3 is arc-shaped and includes a middle portion 3a and two arm portions 3b connected to both ends of the middle portion 3a. The two arm portions 3b are arranged opposite to each other. A convex reinforcing part 30 is provided in the middle of the outer layer 3 , and the reinforcing part 30 and the outer layer 3 are integrally injection molded.

By arranging the reinforcement part 30 in the middle part 3a of the outer layer 3, the strength of the middle part 3a can be effectively improved. During exercise, the neckband usually undergoes the strongest deformation at the position of the middle part 3a. Therefore, the reinforcement part 30 is provided in the middle part 3a. It helps the neck-mounted wire to receive even force, reduces the bending and torsional deformation of the neck-worn wire, and maintains the balance of the bone conduction earphones during exercise. In addition, when the neckband is subjected to external force, the middle part 3a is the position with the greatest deformation. By providing the reinforcing part 30, the deformation of the middle part 3a can be reduced, thereby preventing the elastic metal wire 1 from plastic deformation due to excessive bending and twisting, which is beneficial to maintaining the The shape of the neck cord ensures the stability of wearing bone conduction headphones.

As shown in Figure 3, the cross-sectional size of the middle part 3a of the neckband is set to be smaller than the cross-sectional size of other parts. Specifically, the cross-sectional size of the ends 3d of the two arm parts 3b is the largest to achieve connection with the battery compartment 50 and the control. The shell of the warehouse 51 is seamlessly connected, and the cross-sectional size of the arm 3b gradually decreases from its end toward the middle 3a. In this way, the overall weight of the neckband can be reduced, the center of gravity of the neckband can be moved forward, and movement can be suppressed. The swing tendency and swing amplitude make it lighter and more comfortable to wear, while also reducing the use of materials and costs. Since the cross-sectional size of the middle part 3a is small, the overall strength there is the weakest, and deformation and distortion usually occur at the middle position. By arranging the reinforcing part 30 in the middle part, the strength there can be effectively improved, and bending and distortion can be reduced. Distorted.

As a preferred embodiment, the reinforcing part 30 protrudes toward the outside of the area 3c enclosed by the outer layer 3, that is, the reinforcing part 30 does not protrude toward the inside of the area 3c. In Figure 4, the dotted line shows the inside and outside of the area 3c. The outer boundary line is the inner side of the area 3c on the left side and the outer side of the area 3c on the right side. In this way, when the neck strap is worn on the human body, the reinforcing part 30 will not come into contact with the human body, making the wearing more comfortable.

Outside the area 3c, the reinforcing portion 30 can protrude in any direction, and it can be arranged vertically, horizontally, or inclined. In order to make the reinforcing part 30 better prevent the neckband from bending up and down or twisting and deforming, when the neckband is placed horizontally, the reinforcing part 30 bulges upward or downward, and the angle between the convex direction D and the vertical surface C The range is 0 to 45°, preferably 0 to 30°, further preferably 0 to 15°, further preferably 0 to 5°, further preferably 0°, that is, the reinforcing part 30 protrudes vertically upward or vertically downward. . In this way, the reinforcing part 30 can more fully strengthen the thickness of the middle part 3a in the vertical direction and improve its ability to resist up and down bending and torsional deformation.

Referring to FIG. 10 , FIG. 10 shows a side view of the bone conduction earphone when being worn. At this time, the neck cord of the bone conduction earphone is in an open state. There is a first center point 5a at the connection point between the neckband cord and the compartment body (the battery compartment 50 and the control compartment 51 described below are both compartment bodies), and a second center point 5b in the middle of the neckband cord middle portion 3a. The connection between the first center point 5a and the second center point 5b forms the center point connection line 5c. The horizontal placement of the neckband line can be understood as the state when the line 5c connecting the center points is horizontal in the side view direction. It can be understood that the neckband line can be set to extend along a straight line in the side view direction, or can be set to extend along a curve. For example, in the embodiment shown in FIG. 11 , the tail of the neckband line (i.e., FIG. The middle right end) is upturned, and its entire body is roughly arc-shaped in the side view direction.

As a preferred embodiment, referring to FIG. 5 , a brand logo or other identifier 301 is provided on the outer side 300 of the reinforcing part 30 (that is, the side of the reinforcing part 30 facing away from the area 3c enclosed by the outer skin layer 3), so as to It not only improves the aesthetics but also plays a role in brand communication. Preferably, the marker is made of reflective material to serve as a warning. For example, when the user is running at night, the reflective marker 301 is convenient for other users. Personnel observe users, which is safer. It can be understood that when the reinforcement part 30 is arranged vertically, the logo or other identifier 301 is more easily observed by others. The marker 301 can be formed into the reinforcement part 30 by covert engraving, or can be injection molded together with the outer layer 30 . Of course, it can also be connected to the reinforcement part 30 by pasting or applying reflective paint.

As a preferred embodiment, when the neckband is placed horizontally, the reinforcing portion 30 protrudes vertically upward, which is more beautiful than the arrangement in which the neckband 30 protrudes vertically downward.

As a preferred embodiment, the material of the outer layer 3 is silica gel. The hardness of the silica gel is 30-90 SHA. The silica gel has good affinity with human skin and is softer and more comfortable to wear. Moreover, the neck wear can also be improved by controlling the hardness of the silica gel. The wire's resistance to bending and twisting. It is further preferred that the hardness of the silica gel is 50 SHA to 70 SHA, and further preferably 60 SHA. In this case, it has good resistance to bending and twisting, and the skin feels better.

For ease of description, with reference to Figures 3, 6 and 7, the height H of the reinforced portion 30 is defined as the dimension of the reinforced portion 30 protruding from the middle portion 3a along the protruding direction A, and the length L of the reinforced portion 30 is defined as the length L along the neck. The size in the extending direction of the thread, the thickness B of the reinforcing part 30 is a dimension perpendicular to both the protruding direction A and the extending direction. Furthermore, when the cross section of the reinforcing part 30 is not rectangular, for example, in Figure 4, the reinforcing part 30 The cross-section is approximately trapezoidal, and the thickness B refers to the thickness at the midpoint of the height direction.

Taking the reinforcing part 30 as protruding vertically upward as an example, as shown in FIG. 6 , the height H of the reinforcing part 30 is its vertical dimension, and the thickness B is its horizontal dimension. As a preferred embodiment, the ratio of the height H of the reinforcing part 30 to the height H0 of the outer layer 3 of the connected part ranges from 25% to 150%, and the ratio of the length L of the reinforcing part 30 to the length of the outer layer 3 The range is 5% to 30% (the length of the outer layer 3 does not include the length of the protrusion 3e provided on the end 3d), the ratio of the thickness B of the reinforcing part 30 to the thickness B0 of the outer layer 3 of the connected part The range is 30% to 80%. At this time, the reinforcing part 30 has good resistance to bending and twisting, and can ensure the stability of the bone conduction earphone when worn. It can be understood that when the cross-sectional size of the middle part 3a is the same everywhere, the height and thickness of the outer layer 3 of the part connected to the reinforcing part 30 are the height and thickness of the middle part 3a.

Further preferably, the ratio range of the height H of the reinforcing part 30 to the height H0 of the outer skin layer 3 of the connected part ranges from 60% to 85%, for example 76%, and the ratio of the length L of the reinforcing part 30 to the length of the outer skin layer 3 is The range is 10% to 20%, for example 14%, and the ratio of the thickness B of the reinforcing part to the thickness B0 of the outer skin layer 3 of the connected part ranges from 55% to 57%, for example 56%. Within the above ratio range, the reinforced part 30 has stable resistance to bending and twisting, and is more beautiful.

As a preferred embodiment, the length of the reinforcing part 30 ranges from 25 to 45 mm, the height ranges from 3.5 to 6.5 mm, and the thickness ranges from 2 to 3 mm. By limiting its physical size, it can have good strength and The stiffness resists bending and torsional deformation, making it more stable as a whole, while also providing better wearing comfort and aesthetics.

As a preferred embodiment, the entire neckband is axially symmetrical, so that when worn, the forces on the two ears are more balanced and more comfortable to wear. At the same time, during exercise, the force on the neckband is more even. Bone conduction headphones have better balance.

As a preferred embodiment, the neckband wire is connected to the battery compartment 50 and the control compartment 51 of the bone conduction earphones through plugging. As shown in Figures 1 and 2, the neckband wire also includes two terminals connected to the outer layer 3 respectively. Two connectors 4 at the end, the end of the elastic metal wire 1 is located in the connector 4, the connector 4 is formed on the outer layer 3 by two-color injection molding, and is wrapped around the end of the elastic metal wire 1, the connector 4 is connected to the battery The warehouse 50 and the control warehouse 51 are connected by snap connection. Since the neckband often deforms during use, if the elastic metal wire 1 becomes loose in the outer layer 3, it may shift during bending or twisting, and even affect the firmness of the connection between the connector 4 and the outer layer 3. . In order to solve this problem, as shown in Figure 8, the end of the elastic metal wire 1 is provided with at least one radially outwardly convex protrusion 10 and/or a radially inwardly concave recess 11. Since the connector 4 is wrapped at the end, , therefore, a staggered interlocking structure is formed between it and the convex portion 10 and the concave portion 11, making the elastic metal wire 1 more firmly fixed and less likely to loosen. Preferably, the end of the elastic metal wire 1 is provided with a plurality of spaced-apart convex portions 10 and a plurality of spaced-apart concave portions 11. The convex portions 10 and the concave portions 11 can be formed by radial pressing.

The present invention also proposes a bone conduction earphone, which includes the neck wearing wire 5 mentioned above.

As shown in Figures 9 and 10, the bone conduction earphone also includes a battery compartment 50, a control compartment 51, a first earphone head 52 and a second earphone head 53. The control compartment 51 and the battery compartment 50 are connected through a neckband 5. The first earphone head 52 and the battery compartment 50 and the second earphone head 53 and the control compartment 51 are connected through ear hooks 54 . It is understood that the positions of the battery compartment 50 and the control compartment 51 can be exchanged.

When in use, the neckband 5 is wrapped around the back of the person's head, and the two ear hooks 54 are hooked above the person's ears. The first earphone head 52 and the second earphone head 53 are respectively located on both sides of the head and are in contact with the face. The part of the ear close to the skin fits.

The neck wearing wire 5 can provide a clamping force to drive the bone conduction earphone to be clamped on the human head, and due to its design With the reinforced portion 30, the neck strap 5 can effectively resist bending and twisting deformation, ensuring that it can provide stable clamping force even during exercise, and provide a better wearing experience.

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 neckband, characterized by comprising an elastic metal wire (1), a conductor (2) and an outer layer (3) covering the elastic metal wire (1) and the conductor (2), so The middle part (3a) of the outer layer (3) is provided with a convex reinforcing part (30).
The neck cord according to claim 1, wherein the reinforcing portion (30) protrudes toward the outside of the area (3c) enclosed by the outer layer (3).
The neck strap according to claim 2, characterized in that when the neck strap is placed horizontally, the reinforcing part (30) bulges upward or downward, and the distance between the bulge direction and the vertical surface is The included angle is 0~45°.
The neck cord according to claim 3, wherein the angle between the protruding direction and the vertical surface is 0 to 30°.
The neck cord according to claim 4, wherein the angle between the protruding direction and the vertical surface is 0 to 15°.
The neck cord according to claim 5, wherein the angle between the protruding direction and the vertical surface is 0°.
The neck cord according to claim 3, characterized in that a marker (301) is provided on the outer surface (300) of the reinforcement portion (30), and the marker (301) is made of reflective material.
The neckband according to claim 1, characterized in that the material of the outer layer (3) is silica gel, and the hardness of the silica gel is 30-90 SHA.
The neck cord according to claim 8, wherein the hardness of the silicone is 50-70 SHA.
The neck cord according to claim 9, wherein the hardness of the silicone is 60 SHA.
The neckband cord according to claim 1, characterized in that the cross-sectional size of the middle part of the neckband cord (3a) is smaller than the cross-sectional size of other parts of the neckband cord.
The neckband according to claim 11, characterized in that the outer layer (3) includes two arm portions (3b) respectively connected at both ends of the middle portion (3a), and the arm portions (3b) The cross-sectional dimensions gradually decrease from its ends toward the middle portion (3a).
The neckband cable according to claim 1, characterized in that it further includes: respectively connected to the Two connectors (4) at both ends of the outer layer (3), the end of the elastic metal wire (1) is located in the connector (4), and the end of the elastic metal wire (1) is provided with At least one radially outwardly convex projection (10) and/or a radially inwardly concave recess (11).
The neckband according to any one of claims 1 to 13, characterized in that the ratio of the height of the reinforcing part (30) to the height of the outer layer (3) of the part to which it is connected ranges from 25% to 25%. 150%, the ratio of the length of the reinforcing part (30) to the length of the outer layer (3) ranges from 5% to 30%, and the thickness of the reinforcing part (30) accounts for the thickness of the outer layer of the connected part. The thickness ratio of (3) ranges from 30% to 80%.
The neckband according to claim 14, characterized in that the ratio of the height of the reinforcement part (30) to the height of the outer layer (3) of the connected part ranges from 60% to 85%, and the reinforcement The ratio of the length of the portion (30) to the length of the outer layer (3) ranges from 10% to 20%, and the thickness of the reinforcing portion (30) accounts for 30% of the thickness of the outer layer (3) of the part it is connected to. The ratio range is 55% to 57%.
The neckband cord according to claim 14, characterized in that the length of the reinforcing part (30) is 25-45 mm, the width is 3.5-6.5 mm, and the thickness is 2-3 mm.
A bone conduction earphone, characterized by including the neck cord according to any one of claims 1 to 16.