Bone conduction earphone head and bone conduction earphone
By setting the exposed part of the optical heart rate sensor as the contact surface centered or proximal in the bone conduction head, the detection accuracy problem caused by the central rate sensor and the skin gap of the prior art is solved, and higher detection accuracy is achieved and stability.
Patent Information
- Application Number
- CN202420032147.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-05
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-05
AI Technical Summary
There is a gap between the heart rate sensor in existing bone conduction earphones and the human skin, which affects the accuracy of detection.
A bone conduction head is designed, which includes a housing assembly and an optical heart rate sensor embedded in the panel. The exposed part of the sensor is located in the center or proximal contact surface to ensure close contact with human skin, reduce light leakage and improve detection accuracy.
Through close contact, the detection accuracy of the optical heart rate sensor is improved, light leakage problems are reduced, and the reliability of the detection results is enhanced.
Smart Images
Figure CN222169976U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of earphones, in particular to a bone conduction earphone head and a bone conduction earphone. Background Art
[0002] Headphones are devices that convert electrical signals into audio signals so that people can hear sounds. Headphones can generally be divided into bone conduction headphones and air conduction headphones. Among them, bone conduction headphones convert sound signals into mechanical vibrations and transmit sound waves through the human skull, bony labyrinth, inner ear lymph, spiral organ, and auditory center.
[0003] With the development of technology, the functions of bone conduction headphones are becoming more and more diversified. For example, a Chinese patent with publication number CN218041708U discloses a headphone that can detect human heart rate. Its movement (i.e., the headphone head) is provided with a heart rate sensor that can detect human heart rate, thereby enabling the headphone to have the function of detecting heart rate.
[0004] Specifically, in the solution disclosed in the above patent, the heart rate sensor is arranged inside the movement housing, and the area where the movement contacts the human body is provided with a through hole corresponding to the heart rate sensor. The heart rate sensor irradiates the detection light onto the human skin through the through hole, thereby detecting the human heart rate.
[0005] The solution disclosed in the above patent has the following defects: since the heart rate sensor is arranged inside the movement housing, there is a gap between the heart rate sensor and the human skin, and there may even be problems such as light leakage, which has an adverse effect on the accuracy of detection.
[0006] Therefore, it is necessary to improve the prior art to overcome the above defects in the prior art. Utility Model Content
[0007] The utility model aims to provide a bone conduction earphone head and a bone conduction earphone, which are conducive to making the heart rate sensor in close contact with the skin.
[0008] In order to achieve the above-mentioned purpose of the utility model, the utility model proposes a conductive earphone head, which includes:
[0009] A housing assembly, comprising a panel and a connection portion for connecting to an ear hook, wherein the panel comprises a contact surface for contacting human skin, wherein the contact surface comprises a proximal end and a distal end respectively located at two ends thereof, wherein the proximal end is closer to the connection portion than the distal end; and
[0010] The optical heart rate sensor is embedded in the panel and has an exposed portion exposed on the contact surface. The exposed portion is centrally arranged relative to the contact surface or arranged at the proximal end.
[0011] Furthermore, the proximal end has a first edge, the distal end has a second edge, and the shortest distance between the exposed portion and the first edge is smaller than the shortest distance between the exposed portion and the second edge.
[0012] Furthermore, the contact surface is symmetrical about a first axis of symmetry and a second axis of symmetry, the first axis of symmetry and the second axis of symmetry are perpendicular to each other, the proximal end has a first edge, the distal end has a second edge, the first axis of symmetry has a first intersection and a second intersection with the first edge and the second edge respectively, and the shortest distance between the exposed portion and the first intersection is smaller than the shortest distance between the exposed portion and the second intersection.
[0013] Furthermore, the first edge and the second edge are in an outwardly convex arc shape, and the contact surface also includes a side edge connected between adjacent end points of the first edge and the second edge, and the side edge is in a straight line shape or an arc shape.
[0014] Furthermore, the extending direction of the connecting portion is parallel to the first symmetry axis;
[0015] The exposed portion is symmetrical about the first symmetry axis.
[0016] Furthermore, the contact surface is a plane, and the exposed portion is flush with the contact surface.
[0017] Furthermore, the panel also includes a protruding portion protruding from the contact surface, and the exposed portion is exposed from the protruding portion to form a fitting surface for contacting a human body.
[0018] Furthermore, the exposed portion is flush with the fitting surface.
[0019] Furthermore, there is a smooth transition between the protrusion and the contact surface; and the spacing between the fitting surface and the contact surface is less than 0.4 mm.
[0020] Furthermore, the optical heart rate sensor includes a light receiver and a light transmitter, the exposed portion is the outer end surface of the light receiver and the light transmitter, and the panel is integrally injection-molded on the outside of the optical heart rate sensor.
[0021] On the other hand, the utility model also provides a bone conduction earphone, which comprises any bone conduction earphone head as described above.
[0022] Compared with the prior art, the present invention has the following beneficial effects: According to at least one embodiment of the present invention, the bone conduction earphone head includes a shell assembly and an optical heart rate sensor, the shell assembly includes a panel provided with a contact surface, and the exposed portion of the optical heart rate sensor is located in the center of the contact surface or at the proximal end of the contact surface. When worn, the exposed portion of the earphone head fits more closely to the human skin, thereby improving the accuracy of the optical heart rate sensor detection. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is an exploded view of a bone conduction earphone head in one embodiment of the present invention.
[0024] Figure 2 This is a front view of a bone conduction earphone head in one embodiment of the present invention.
[0025] Figure 3 It is a cross-sectional view of a bone conduction earphone head in one embodiment of the present invention.
[0026] Figure 4 It is a schematic diagram of a bone conduction earphone head in one embodiment of the present invention.
[0027] Figure 5 This is a front view of a bone conduction earphone head in one embodiment of the present invention.
[0028] Figure 6 It is a cross-sectional view of a bone conduction earphone head in one embodiment of the present invention.
[0029] Figure 7 It is a structural diagram of a bone conduction headset in one embodiment of the present invention. DETAILED DESCRIPTION
[0030] In order to make the above-mentioned purposes, 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 is to 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 structures related to the present application are shown in the accompanying drawings, rather than all structures. 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.
[0031] The terms "including" and "having" and any variations thereof in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.
[0032] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0033] like Figure 1 and Figure 2 As shown, the utility model proposes a bone conduction earphone head, which includes a shell component 1 and an optical heart rate sensor 2.
[0034] The housing assembly 1 includes a panel 10 and a connecting portion 13 for connecting to the ear hook 3. The panel 10 includes a contact surface 11 for contacting human skin. The contact surface 11 includes a proximal end 110 and a distal end 111 located at both ends thereof, respectively. The proximal end 110 is closer to the connecting portion 13 than the distal end 111.
[0035] The optical heart rate sensor 2 is embedded in the panel 10, and the panel 10 is provided with a through hole 17. The optical heart rate sensor 2 has an exposed portion 20 that passes through the through hole 17 and is exposed to the contact surface 11. The exposed portion 20 is arranged in the center of the contact surface 11 or at the proximal end 110. When the exposed portion 20 is arranged in the center of the contact surface 11, the center of the exposed portion 20 coincides with the center of the contact surface 11. In the present utility model, the exposed portion 20 refers to the entirety of the surface of the optical heart rate sensor 2 that is exposed to the contact surface 11. Figure 2 In the embodiment, the exposed portion 20 includes a first sub-exposed portion 20a and a second sub-exposed portion 20b.
[0036] like Figure 7 As shown, the bone conduction earphone includes the two bone conduction earphone heads as described above, the first chamber body 4, the second chamber body 5, and the back hook 7 connected between the first chamber body 4 and the second chamber body 5, and the first chamber body 4 and the second chamber body 5 are each connected to a bone conduction earphone head through an ear hook 3. When the bone conduction earphone is worn on the human head, the ear hook 3 applies an elastic force to the bone conduction earphone head from the outside to the inside to clamp the skin on both sides of the human head. It can be understood that the closer the part of the contact surface 11 is to the connecting part 13, the greater the contact force between the skin and the proximal end 110 of the contact surface 11 fits more closely to the human skin than the distal end 111. Therefore, setting the exposed part 20 of the optical heart rate sensor 2 to be located at the center of the contact surface 11 or at the proximal end 110 of the contact surface 11 can make the optical heart rate light sensor 2 fit more closely to the human skin and prevent light leakage, thereby improving the working performance of the optical heart rate sensor 2 and making the detection result more accurate.
[0037] like Figure 2 As shown, the proximal end 110 of the contact surface 11 has a first edge 112, and the distal end 111 has a second edge 113, and the first edge 112 is closer to the connecting portion 13 than the second edge 113. The shortest distance between the exposed portion 20 and the first edge 112 is smaller than the shortest distance between the exposed portion 20 and the second edge 113, so that the exposed portion 20 can be arranged close to the connecting portion 13 on the contact surface 11, and can fit more closely with human skin.
[0038] like Figure 2 As shown, in some embodiments, the contact surface 11 is symmetrical about the first symmetry axis 11a and the second symmetry axis 11b, and the first symmetry axis 11a and the second symmetry axis 11b are perpendicular to each other. In this case, when the exposed portion 20 is centrally arranged relative to the contact surface 11, it means that the center of the exposed portion 20 coincides with the intersection of the two symmetry axes, and the exposed portion 20 is arranged at the proximal end 110 relative to the contact surface 11, which means that the center of the exposed portion 20 is arranged on the side of the second symmetry axis 11b close to the connecting portion 13, that is, it is located on the same side of the second symmetry axis 11b as the connecting portion 13, and the first symmetry axis 11a and the first edge 112 and the second edge 113 have a first intersection 114 and a second intersection 115 respectively, and at this time, the shortest distance A between the exposed portion 20 and the first intersection 114 is smaller than the shortest distance B between the exposed portion 20 and the second intersection 115.
[0039] In some embodiments, Figure 2 As shown, the exposed portion 20 is symmetrical about the first symmetry axis 11a. In other embodiments, the exposed portion 20 may be offset to one side of the first symmetry axis 11a.
[0040] In some embodiments, Figure 2 As shown, the first edge 112 and the second edge 113 are in the shape of an outwardly convex arc (preferably a circular arc), and the contact surface 11 further includes a side edge 116 connected between adjacent end points of the first edge 112 and the second edge 113. The area enclosed by the first edge 112, the second edge 113 and the two side edges 116 is the contact surface 11, and the side edge 116 is in the shape of a straight line or an arc; Figure 2 In the illustrated embodiment, the side edge 116 is in an arc shape, and the curvature of the arc is much smaller than the curvatures of the first edge 112 and the second edge 113 .
[0041] The position of the connecting portion 13 relative to the first symmetry axis 11a is not limited. In some embodiments, the connecting portion 13 is centered relative to the first symmetry axis 11a in the direction of the front view of the contact surface 11. In other embodiments, Figure 2 As shown, in the direction of looking directly at the contact surface 11, the connecting portion 13 is offset to one side of the first symmetry axis 11a (offset to the left side in the figure).
[0042] Preferably, the dimension of the exposed portion 20 perpendicular to the extension direction C of the connection portion 13 is smaller than the dimension of the exposed portion 20 parallel to the extension direction C of the connection portion 13. Even if the connection portion 13 is offset to one side of the first symmetry axis 11a, resulting in uneven force on the contact surface 11, the force on the exposed portion 20 perpendicular to the extension direction C will not differ too much, which is conducive to ensuring the consistency of the fit between the exposed portion 20 perpendicular to the extension direction C and the skin.
[0043] For example, Figure 2 In the illustrated case, the extension direction C of the connection portion 13 is parallel to the first symmetry axis 11a, the exposed portion 20 is symmetrical about the first symmetry axis 11a, its length direction coincides with the first symmetry axis 11a, and its width direction is parallel to the second symmetry axis 11b. Since the dimension of the exposed portion 20 perpendicular to the first symmetry axis 11a is set to be smaller than the dimension of the exposed portion 20 perpendicular to the second symmetry axis 11b, the contact force between the exposed portion 20 and the skin in the width direction is more balanced.
[0044] Preferably, the length direction of the contact surface 11 is consistent with the length direction of the optical heart rate sensor 2 .
[0045] like Figure 2 and Figure 3 As shown, in one embodiment, the contact surface 11 is a plane, and the exposed portion 20 is flush with the contact surface 11 .
[0046] like Figures 4 to 6 As shown, in another embodiment, the panel 10 also includes a protruding portion 12 protruding from the contact surface 11, and the exposed portion 20 is exposed from the protruding portion 12 for contacting a fitting surface 120 with a human body, which is beneficial for reducing the distance between the optical heart rate sensor 2 and the skin through the protruding portion 12 and reducing light leakage.
[0047] Furthermore, the exposed portion 20 is arranged to be flush with the fitting surface 120. At this time, the exposed portion 20 protrudes from the contact surface 11, and can be pressed more tightly into the skin, further eliminating the gap between the skin and the exposed portion 20, improving the light leakage problem, and improving the accuracy of the optical heart rate sensor 2. In other embodiments, the exposed portion 20 can also be arranged to be concave or protruding from the fitting surface 120.
[0048] like Figure 6 As shown, in order to improve the wearing comfort of the user, the raised portion 12 and the contact surface 11 are smoothly transitioned through an inclined surface or a curved surface; further, the spacing L between the fitting surface 120 and the contact surface 11 is less than or equal to 0.4 mm, and the fitting surface 120 is set within this spacing range, taking into account both the close contact between the fitting surface 120 and the human body and the wearing comfort of the user.
[0049] like Figure 1As shown, the optical heart rate sensor 2 includes a light receiver 21 and a light transmitter 22, and the exposed portion 20 is the outer end surface of the light receiver 21 and the light transmitter 22, which is in close contact with the human body. The panel 10 can be integrally injection molded on the outside of the optical heart rate sensor 2, or can be connected to the optical heart rate sensor 2 by gluing or welding.
[0050] like Figure 1 As shown, the housing assembly 1 further includes a front cover 14, a middle frame 15 and a rear cover 16, which are connected in sequence, for example, by gluing or snapping; the front cover 14 includes a panel 10, the middle frame 15 is annular, and the connecting portion 13 is integrally formed with the middle frame 15. The bone conduction earphone head also includes a vibration device 8 and a circuit board 9 disposed in the housing assembly 1, the vibration device 8 is fixedly connected to the front cover 14, and is spaced apart from the optical heart rate sensor 2.
[0051] like Figure 7 As shown, the utility model also proposes a bone conduction headset. In some embodiments, the first compartment 4 is set as a control compartment of the bone conduction headset, so as to facilitate the user to control the bone conduction headset; the second compartment 5 is set as a battery compartment to provide power for the bone conduction headset. The ear hook 3 adopts an arc design and is used to hook on the human ear, so as to fix the bone conduction headset head and the compartment body on both sides of the human ear. The back hook 7 and the ear hook 3 are both made of elastic material and are elastic, so that a clamping force is generated between the two earphone heads and the human skin, thereby improving the stability of the headset when worn, and also allowing the optical heart rate sensor 2 to fit closely with the human skin.
[0052] The above are only specific implementations of the present invention, and any 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 bone conduction earphone head, characterized in that: include: A housing assembly (1) comprises a panel (10) and a connecting portion (13) for connecting to an ear hook (3), wherein the panel (10) comprises a contact surface (11) for contacting human skin, wherein the contact surface (11) comprises a proximal end (110) and a distal end (111) respectively located at two ends thereof, wherein the proximal end (110) is closer to the connecting portion (13) than the distal end (111); and An optical heart rate sensor (2) is embedded in the panel (10) and has an exposed portion (20) exposed from the contact surface (11); the exposed portion (20) is centrally arranged relative to the contact surface (11) or arranged at the proximal end (110).
2. The bone conduction earphone headphone according to claim 1, characterized in that: The proximal end (110) has a first edge (112), the distal end (111) has a second edge (113), and the shortest distance between the exposed portion (20) and the first edge (112) is smaller than the shortest distance between the exposed portion (20) and the second edge (113).
3. The bone conduction earphone headphone according to claim 1, characterized in that: The contact surface (11) is symmetrical about a first symmetry axis (11a) and a second symmetry axis (11b), the first symmetry axis (11a) and the second symmetry axis (11b) are perpendicular to each other, the proximal end (110) has a first edge (112), the distal end (111) has a second edge (113), the first symmetry axis (11a) and the first edge (112) and the second edge (113) respectively have a first intersection point (114) and a second intersection point (115), and the shortest distance between the exposed portion (20) and the first intersection point (114) is smaller than the shortest distance between the exposed portion (20) and the second intersection point (115).
4. The bone conduction earphone headphone according to claim 3, characterized in that: The first edge (112) and the second edge (113) are in the shape of an outwardly convex arc, and the contact surface (11) further comprises a side edge (116) connected between adjacent end points of the first edge (112) and the second edge (113), and the side edge (116) is in the shape of a straight line or an arc.
5. The bone conduction earphone headphone according to claim 3, characterized in that: The dimension of the exposed portion (20) perpendicular to the extension direction of the connecting portion (13) is smaller than the dimension of the exposed portion (20) parallel to the extension direction of the connecting portion (13).
6. The bone conduction earphone headphone according to claim 3, characterized in that: The extending direction of the connecting portion (13) is parallel to the first symmetry axis (11a); The exposed portion (20) is symmetrical about the first symmetry axis (11a).
7. The bone conduction earphone according to any one of claims 1 to 6, characterized in that: The contact surface (11) is a plane, and the exposed portion (20) is flush with the contact surface (11).
8. The bone conduction earphone according to any one of claims 1 to 6, characterized in that: The panel (10) further comprises a raised portion (12) raised from the contact surface (11), and the exposed portion (20) is exposed from the raised portion (12) to form a fitting surface (120) for contacting a human body.
9. The bone conduction earphone headphone according to claim 8, characterized in that: The exposed portion (20) is flush with the fitting surface (120).
10. The bone conduction earphone headphone according to claim 8, characterized in that: There is a smooth transition between the raised portion (12) and the contact surface (11); and the distance between the fitting surface (120) and the contact surface (11) is less than 0.4 mm.
11. The bone conduction earphone according to any one of claims 1 to 6, characterized in that: The optical heart rate sensor (2) comprises a light receiver (21) and a light transmitter (22); the exposed portion (20) is the outer end surface of the light receiver (21) and the light transmitter (22); and the panel (10) is integrally injection-molded on the outside of the optical heart rate sensor (2).
12. A bone conduction headset, characterized in that: It comprises the bone conduction earphone head as claimed in any one of claims 1 to 11.