Bone conduction speaker with enhanced sensitivity

Abstract

The invention provides a bone conduction loudspeaker with enhanced sensitivity, and the loudspeaker comprises an upper housing which is in butt joint with a middle housing and is used for forming a closed space of the bone conduction loudspeaker; the vibration transmission plate is connected with the vibration transmission sheet through a screw and is used for transmitting vibration waves to the upper shell and the middle shell; the middle shell is in butt joint with the upper shell and the lower shell respectively and used for installing the vibration transmission plate and forming a closed space of the bone conduction loudspeaker; the fixing piece is screwed between the vibration transmission plate and the vibration transmission sheet through a screw and is used for fastening the vibration transmission plate; the vibration transmission sheet is connected with the fixing piece through a screw and is used for transmitting vibration waves to the vibration transmission plate; the magnetic assembly is connected with the vibration transmission sheet and is used for generating an alternating magnetic field; and the lower shell is in butt joint with the middle shell and is used for forming a closed space of the bone conduction loudspeaker. Vibration of the vibration transmission piece can be achieved, the overall design structure is simple and easy to achieve, the vibration transmission plate is hung on the shell, the vibration transmission piece is further arranged at the top of the magnetic assembly and connected with the vibration transmission plate, the overall Young modulus is small, and the frequency response range is wide.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of bone conduction headphones, and in particular to a bone conduction speaker with enhanced sensitivity. Background Art

[0002] The sound conduction of bone conduction headphones does not require the vibration of the eardrum, which not only improves comfort but also protects the wearer's hearing, and has its unique advantages. Existing bone conduction headphones have the following defects. First, the bone conduction speaker needs to design a magnetic gap, which increases the overall design and manufacturing cost of the bone conduction headphones; secondly, the vibration transmission plate in the current bone conduction speaker generally adopts a base composed of welded magnetic materials and coils, resulting in a large Young's modulus and a narrow frequency response range. Therefore, the development of a bone conduction speaker with enhanced sensitivity that can effectively overcome the defects in the above-mentioned related technologies has become a technical problem that needs to be solved urgently in the industry. Summary of the invention

[0003] In view of the above problems existing in the prior art, an embodiment of the present invention provides a bone conduction speaker with enhanced sensitivity.

[0004] In a first aspect, an embodiment of the present invention provides a bone conduction speaker with enhanced sensitivity, comprising: an upper shell body, docked with a middle shell body, and used to form a closed space of the bone conduction speaker; a vibration plate, connected to the vibration plate by screws, and used to transmit vibration waves to the upper shell body and the middle shell body; a middle shell body, docked with the upper shell body and the lower shell body, respectively, and used to install the vibration plate and form a closed space of the bone conduction speaker; a fixing device, screwed between the vibration plate and the vibration plate by screws, and used to fasten the vibration plate; the vibration plate, connected to the fixing device by screws, and used to transmit vibration waves to the vibration plate; a magnetic component, connected to the vibration plate, and used to generate an alternating magnetic field; and a lower shell body, docked with the middle shell body, and used to form a closed space of the bone conduction speaker.

[0005] Based on the contents of the above-mentioned device embodiment, in the bone conduction speaker with enhanced sensitivity provided in the embodiment of the present invention, the upper end of the inner wall of the middle shell is provided with a step along the circumferential direction, and the vibration transmission plate is installed on the step.

[0006] Based on the contents of the above-mentioned device embodiment, the bone conduction speaker with enhanced sensitivity provided in the embodiment of the present invention, the vibration plate is connected to the vibration sheet by screws, and also includes: the vibration plate and the fixing part are connected by welding or gluing.

[0007] Based on the contents of the above-mentioned device embodiment, in the bone conduction speaker with enhanced sensitivity provided in the embodiment of the present invention, the thickness of the vibration transmission plate is 0.7 mm to 1 mm.

[0008] On the basis of the contents of the above-mentioned device embodiment, in the bone conduction speaker with enhanced sensitivity provided in the embodiment of the present invention, the middle of the vibration transmission plate is hollowed out, and the hollowed-out gap is used for screwing the screw.

[0009] Based on the contents of the above-mentioned device embodiment, the bone conduction speaker with enhanced sensitivity provided in the embodiment of the present invention, the magnetic component includes: an electromagnet, arranged around the coil, for generating a magnetic field; a T-shaped iron, for winding the coil; and a coil, wound on the T-shaped iron, for passing an alternating current.

[0010] Based on the contents of the above device embodiment, in the bone conduction speaker with enhanced sensitivity provided in the embodiment of the present invention, there are two electromagnets, which are respectively located on both sides of the coil.

[0011] Based on the contents of the above-mentioned device embodiment, in the bone conduction speaker with enhanced sensitivity provided in the embodiment of the present invention, both the firmware and the vibration plate are provided with screw through holes, and the number of screw through holes on the firmware is the same as the number of screw through holes on the vibration plate.

[0012] Based on the contents of the above-mentioned device embodiment, in the bone conduction speaker with enhanced sensitivity provided in the embodiment of the present invention, the screw through holes on the fixture and the screw through holes on the vibration transmission plate are arranged in pairs, and the screw through holes on each pair of the fixture and the screw through holes on the vibration transmission plate are on the same vertical line.

[0013] Based on the contents of the above-mentioned device embodiment, in the bone conduction speaker with enhanced sensitivity provided in the embodiment of the present invention, a wire hole is opened on the side of the middle shell body for conveying wires from the outside to the magnetic component.

[0014] The bone conduction speaker with enhanced sensitivity provided in the embodiment of the present invention can realize the vibration of the vibration plate by connecting the vibration plate and the vibration plate with screws, and then assisted by an alternating magnetic field and a vibration damping plate connected to the bottom. The overall design structure is simple and easy to implement. The vibration plate is suspended on the shell, and a vibration plate is also connected to the vibration plate on the top of the magnetic component. The overall Young's modulus is small and the frequency response range is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 A schematic diagram of the structure of a bone conduction speaker with enhanced sensitivity provided by an embodiment of the present invention; Figure 2 A schematic diagram of the specific structure of a magnetic component provided by an embodiment of the present invention; Figure 3 A schematic diagram of the disassembled structure of a bone conduction speaker with enhanced sensitivity provided in an embodiment of the present invention. Implementation

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In addition, the technical features in the various embodiments or single embodiments provided by the present invention can be arbitrarily combined with each other to form a feasible technical solution. This combination is not subject to the constraints of the sequence of steps and / or the structural composition mode, but must be based on the ability of ordinary technicians in this field to achieve. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0018] The embodiment of the present invention provides a bone conduction speaker with enhanced sensitivity. Figure 1 The device includes: an upper shell 101, which is connected to a middle shell 103 and is used to form a closed space of a bone conduction speaker; a vibration plate 102, which is connected to a vibration plate 105 by screws 108 and is used to transmit vibration waves to the upper shell 101 and the middle shell 103; the middle shell 103, which is connected to the upper shell 101 and the lower shell 107 respectively, is used to install the vibration plate 102 and form a closed space of the bone conduction speaker; a fixing device 104, which is screwed between the vibration plate 102 and the vibration plate 105 by screws 108 and is used to fasten the vibration plate 102; the vibration plate 105, which is connected to the fixing device 104 by screws 108, is used to transmit vibration waves to the vibration plate 102; a magnetic component 106, which is connected to the vibration plate 105 and is used to generate an alternating magnetic field; and a lower shell 107, which is connected to the middle shell 103 and is used to form a closed space of the bone conduction speaker.

[0019] See also Figure 3 On the basis of the above-mentioned embodiment, in the bone conduction speaker with enhanced sensitivity provided in the embodiment of the present invention, the upper end of the inner wall of the middle shell 103 is provided with a step along the circumferential direction, and the vibration transmission plate 102 is installed on the step.

[0020] On the basis of the above-mentioned embodiment, in the bone conduction speaker with enhanced sensitivity provided in the embodiment of the present invention, the vibration plate 102 is connected to the vibration plate 105 by means of screws 108, and further comprises: the vibration plate 102 is connected to the fixture 104 by welding or gluing.

[0021] See also Figure 3 On the basis of the above-mentioned embodiment, in the bone conduction speaker with enhanced sensitivity provided in the embodiment of the present invention, the thickness of the vibration transmission plate 105 is 0.7 mm to 1 mm.

[0022] In another embodiment, the thickness of the vibration transmission sheet 105 may be 0.75 mm, 0.8 mm or 0.9 mm.

[0023] On the basis of the above-mentioned embodiment, in the bone conduction speaker with enhanced sensitivity provided in the embodiment of the present invention, the middle of the vibration transmission plate is hollowed out, and the hollowed-out gap is used for screwing the screw.

[0024] See also Figure 2 Based on the above embodiment, in the bone conduction speaker with enhanced sensitivity provided in the embodiment of the present invention, the magnetic component 106 (such as Figure 1 As shown), it includes: an electromagnet 201, which is arranged around a coil 202 and is used to generate a magnetic field; a T-shaped iron 203, which is used to wind the coil 202; and the coil 202, which is wound around the T-shaped iron 203 and is used to pass an alternating current.

[0025] See also Figure 2 On the basis of the above-mentioned embodiment, in the bone conduction speaker with enhanced sensitivity provided in the embodiment of the present invention, the number of the electromagnets 201 is two, which are respectively located on both sides of the coil 202.

[0026] See also Figure 3 On the basis of the above embodiment, in the bone conduction speaker with enhanced sensitivity provided in the embodiment of the present invention, both the said fixing 104 and the vibration plate 102 are provided with screw through holes, and the number of the screw through holes on the fixing 104 is the same as the number of the screw through holes on the vibration plate 102. Specifically, the fixing 104 is provided with a screw through hole 302, and the vibration plate 102 is provided with a screw through hole 301.

[0027] See also Figure 3 On the basis of the above embodiments, in the bone conduction speaker with enhanced sensitivity provided in the embodiments of the present invention, the screw through holes on the fixture 104 are arranged in pairs with the screw through holes on the vibration plate 102, and each pair of screw through holes on the fixture 104 and the screw through holes on the vibration plate 102 are on the same vertical line.

[0028] See also Figure 3On the basis of the above-mentioned embodiment, in the bone conduction speaker with enhanced sensitivity provided in the embodiment of the present invention, a wire hole 109 is opened on the side of the middle shell 103 for conveying wires from the outside to the magnetic component 106.

[0029] The bone conduction speaker with enhanced sensitivity provided by the present invention can realize the vibration of the vibration plate by connecting the vibration plate and the vibration plate with screws, and then with the assistance of an alternating magnetic field and a vibration-damping plate connected to the bottom. The overall design structure is simple and easy to implement. The vibration plate is suspended on the shell, and a vibration plate is also connected to the vibration plate on the top of the magnetic component. The overall Young's modulus is small and the frequency response range is wide.

[0030] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed over multiple units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment. Those of ordinary skill in the art may understand and implement the present invention without creative effort.

[0031] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "includes..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bone conduction speaker with enhanced sensitivity, characterized in that: include: The upper shell is connected to the middle shell to form a closed space of the bone conduction speaker; the vibration plate is connected to the vibration plate by screws and is used to transmit vibration waves to the upper shell and the middle shell; the middle shell is connected to the upper shell and the lower shell respectively and is used to install the vibration plate and form a closed space of the bone conduction speaker; the fixing device is screwed between the vibration plate and the vibration plate by screws and is used to fasten the vibration plate; the vibration plate is connected to the fixing device by screws and is used to transmit vibration waves to the vibration plate; the magnetic component is connected to the vibration plate and is used to generate an alternating magnetic field; the lower shell is connected to the middle shell to form a closed space of the bone conduction speaker.

2. The bone conduction speaker with enhanced sensitivity according to claim 1, characterized in that: The upper end of the inner side wall of the middle shell is provided with a step along the circumferential direction, and the vibration transmission plate is installed on the step.

3. The bone conduction speaker with enhanced sensitivity according to claim 2, characterized in that: The vibration transmission plate is connected to the vibration transmission piece by screws, and further comprises: the vibration transmission plate is connected to the fixing piece by welding or gluing.

4. The bone conduction speaker with enhanced sensitivity according to claim 3, characterized in that: The thickness of the vibration transmitter is 0.7 mm to 1 mm.

5. The bone conduction speaker with enhanced sensitivity according to claim 4, characterized in that: The middle of the vibration transmission plate is hollowed out, and the hollowed-out gap is used for threading the screw.

6. The bone conduction speaker with enhanced sensitivity according to claim 5, characterized in that: The magnetic component includes: an electromagnet, which is arranged around the coil and is used to generate a magnetic field; a T-shaped iron, which is used to wind the coil; and a coil, which is wound around the T-shaped iron and is used to pass an alternating current.

7. The bone conduction speaker with enhanced sensitivity according to claim 6, characterized in that: There are two electromagnets, which are respectively located on both sides of the coil.

8. The bone conduction speaker with enhanced sensitivity according to claim 7, characterized in that: The fixing device and the vibration transmission plate are both provided with screw through holes, and the number of the screw through holes on the fixing device is the same as the number of the screw through holes on the vibration transmission plate.

9. The bone conduction speaker with enhanced sensitivity according to claim 8, characterized in that: The screw through holes on the fixing parts and the screw through holes on the vibration transmission plate are arranged in pairs, and the screw through holes on each pair of fixing parts and the screw through holes on the vibration transmission plate are all on the same vertical line.

10. The bone conduction speaker with enhanced sensitivity according to claim 9, characterized in that: A wire hole is provided on the side of the middle shell body for conveying wires to the magnetic component from the outside.

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