CN210958782U - Prevent hindering ear speaker - Google Patents
Prevent hindering ear speaker Download PDFInfo
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- CN210958782U CN210958782U CN201922477299.0U CN201922477299U CN210958782U CN 210958782 U CN210958782 U CN 210958782U CN 201922477299 U CN201922477299 U CN 201922477299U CN 210958782 U CN210958782 U CN 210958782U
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- resistor
- sound
- sound film
- basin frame
- electrically connected
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Abstract
The utility model relates to the technical field of electroacoustic products, in particular to an ear injury prevention loudspeaker, which comprises a shell and a basin frame, wherein a sound film is arranged between the shell and the basin frame, a magnetic bowl is arranged in a cavity formed between the sound film and the shell, one side of an opening of the magnetic bowl is adhered to the sound film, a voice coil and a magnetic pole are nested in the magnetic bowl from outside to inside at one time, the voice coil and a pole piece are nested in the sound film from outside to inside at one time, and the pole piece is provided with a magnetic pole; the magnetic pole is electrically connected with an external power supply through the elastic sheet, a first resistor is electrically connected between the elastic sheet and the external power supply, a metal sheet is arranged on the sound film towards the basin frame, the other end of the metal sheet is electrically connected with a second resistor, the other end of the second resistor is electrically connected with a probe corresponding to the metal sheet on the basin frame through a wire, and the second resistor is connected with the first resistor in parallel. The utility model discloses can the maximum volume size of automatic limitation, prevent that sound is too big and cause the harm to the hearing.
Description
Technical Field
The utility model relates to an electroacoustic product technical field, concretely relates to ear speaker is prevented hindering.
Background
The speaker is also called a horn. It is a very common electroacoustic transducer, and can be found in electronic and electric equipment for producing sound. The size of the sound emitted by the loudspeaker can be controlled by a manual control mode. In some situations, such as in a bar, a disco, a concert, the speaker sound is often artificially loud and unknown due to excitement, which has been an inevitable impairment of hearing in the long run.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides an ear speaker that is protected from excessive sound propagation even when the speaker power is increased.
In order to solve the technical problem, the utility model discloses a technical scheme as follows: an ear injury prevention loudspeaker comprises a shell and a basin frame, wherein a sound film is arranged between the shell and the basin frame, a magnetic bowl is arranged in a cavity formed between the sound film and the shell, one side of an opening of the magnetic bowl is adhered to the sound film, a voice coil and a magnetic pole are nested in the magnetic bowl from outside to inside, the voice coil and a pole piece are nested in the sound film from outside to inside, and the pole piece is provided with the magnetic pole; the magnetic pole is electrically connected with an external power supply through an elastic sheet, and a first resistor is also electrically connected between the elastic sheet and the external power supply;
the sound film is provided with a metal sheet towards the basin frame, the other end of the metal sheet is electrically connected with a second resistor, the other end of the second resistor is electrically connected with a probe corresponding to the metal sheet on the basin frame through a wire, and the second resistor is connected with the first resistor in parallel.
Furthermore, a net cover is arranged on the outer side of the basin frame.
Further, the second resistor is a sound sensitive resistor with the resistance value becoming larger as the sound becomes larger.
Therefore, compared with the prior art, the utility model has the following advantages:
1) the utility model discloses can the maximum volume size of automatic restriction, prevent that sound is too big and cause the harm to the hearing.
2) The utility model discloses owing to limited the amplitude of sound membrane, limited the biggest swing of sound membrane, further improved the life-span of sound membrane to the life of speaker has been improved.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the circuit structure of the present invention.
Wherein: 1. the voice coil loudspeaker comprises a shell, a basin frame 2, a probe 21, a voice diaphragm 3, a metal sheet 31, a second resistor 32, a magnetic bowl 4, a pole piece 5, a voice coil 6, a magnetic pole 7, a mesh cover 8, a power supply 9 and a first resistor 91.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. The following description with reference to the accompanying drawings is provided to assist in understanding the embodiments of the invention defined by the claims. It includes various specific details to assist understanding, but they are to be construed as merely illustrative. Accordingly, those skilled in the art will recognize that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. Also, in order to make the description clearer and simpler, a detailed description of functions and configurations well known in the art will be omitted. As used in the description, the terms "front," "back," "left," "right," "up," and "down" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
The invention will be further described with reference to the following several drawings: an ear injury prevention loudspeaker comprises a shell 1 and a frame 2, wherein a sound film 3 is arranged between the shell 1 and the frame 2, a magnetic bowl 4 is arranged in a cavity formed between the sound film 3 and the frame 2, one side of an opening of the magnetic bowl 4 is adhered to the sound film 3, a voice coil 6 and a magnetic pole 7 are nested in the magnetic bowl 4 from outside to inside, the voice coil 6 and a pole piece are nested in the sound film 3 from outside to inside, and the pole piece is provided with the magnetic pole 7; the magnetic pole 7 is electrically connected with an external power supply 9 through an elastic sheet, and a first resistor 91 is also electrically connected between the elastic sheet and the external power supply 9; the sound film 3 is provided with a metal sheet 31 facing the frame 2, the other end of the metal sheet 31 is electrically connected with a second resistor 32, the other end of the second resistor 32 is electrically connected with a probe 21 corresponding to the metal sheet 31 on the frame 2 through a lead, and the second resistor 32 is connected with the first resistor 91 in parallel. Further, a net cover 8 is arranged outside the basin frame 2. Further, the second resistor 32 is a sound sensitive resistor with a resistance value that becomes larger as the sound becomes larger.
The utility model discloses the principle brief explains:
in the above ear injury preventing loudspeaker, when the power of the loudspeaker is artificially increased, i.e. the sound pressure is increased, the amplitude of the sound film 3 is increased until the metal sheet 31 on the sound film 3 can contact the probe 21 on the frame 2, and at this time, a closed circuit is formed among the probe 21, the metal sheet 31 and the acoustic resistor.
The acoustic resistor is connected in parallel to the power supply 9, when the probe 21 contacts the metal sheet 31, the acoustic resistor starts to act to perform a voltage dividing function, the power is reduced because the first resistor 91 is divided, and then the magnetic pole 7 reduces the amplitude of the voice coil 6 and the amplitude of the sound film 3, thereby achieving the purpose of limiting the sound.
Because the resistance value of the acoustic resistor increases along with the increase of sound, the partial pressure is more, more voltage can be born, the sound of the loudspeaker is reduced, the hearing of the human ear is protected from being damaged, the amplitude of the sound film 3 is limited, the service life of the sound film 3 is prolonged, and the service life of the loudspeaker is prolonged to a certain extent.
Claims (3)
1. An ear injury prevention loudspeaker comprises a shell and a basin frame, wherein a sound film is arranged between the shell and the basin frame, a magnetic bowl is arranged in a cavity formed between the sound film and the basin frame, one side of an opening of the magnetic bowl is adhered to the sound film, a voice coil and a magnetic pole are nested in the magnetic bowl from outside to inside, the voice coil and a pole piece are nested in the sound film from outside to inside, and the pole piece is provided with a magnetic pole; the magnetic pole is electrically connected with an external power supply through an elastic sheet, and a first resistor is also electrically connected between the elastic sheet and the external power supply;
the method is characterized in that: the sound film is provided with a metal sheet towards the basin frame, the other end of the metal sheet is electrically connected with a second resistor, the other end of the second resistor is electrically connected with a probe corresponding to the metal sheet on the basin frame through a wire, and the second resistor is connected with the first resistor in parallel.
2. An ear injury prevention speaker as claimed in claim 1, wherein: the outside of the basin frame is provided with a net cover.
3. An ear injury prevention speaker as claimed in claim 1, wherein: the second resistor is a sound sensitive resistor with the resistance value becoming larger as the sound becomes larger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922477299.0U CN210958782U (en) | 2019-12-31 | 2019-12-31 | Prevent hindering ear speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922477299.0U CN210958782U (en) | 2019-12-31 | 2019-12-31 | Prevent hindering ear speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210958782U true CN210958782U (en) | 2020-07-07 |
Family
ID=71399928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922477299.0U Active CN210958782U (en) | 2019-12-31 | 2019-12-31 | Prevent hindering ear speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210958782U (en) |
-
2019
- 2019-12-31 CN CN201922477299.0U patent/CN210958782U/en active Active
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