CN113115185A

CN113115185A - Exciter

Info

Publication number: CN113115185A
Application number: CN202110372760.5A
Authority: CN
Inventors: 钟柳强; 朱继权
Original assignee: Guoguang Electric Co Ltd
Current assignee: Guoguang Electric Co Ltd
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-07-13

Abstract

The invention discloses an exciter which comprises a support frame and a voice coil, wherein a cavity is arranged in the support frame, two ends of the cavity in the axial direction are respectively communicated with the outside through a first opening and a second opening, the voice coil is partially arranged in the cavity, the voice coil is connected with the support frame through a first support sheet and a second support sheet, the first support sheet and the second support sheet are arranged at intervals along the axial direction of the cavity, at least one connecting block is arranged on the periphery of the support frame, the connecting block is connected with the support frame through an elastic piece, and the connecting block is positioned in the middle of the elastic piece. The first support piece and the second support piece are arranged to position the voice coil at the same time, so that the stability of the voice coil can be improved; the both ends of connecting block are passed through the elastic component and are connected with the support frame, and the elastic component can follow two directions and carry on spacingly to the removal of connecting block, avoids the motion of skew axis direction to appear in the exciter, improves the stability of exciter, and then improves the sound quality of external equipment output.

Description

Exciter

Technical Field

The invention relates to the technical field of electronics, in particular to an exciter.

Background

The exciter is a harmonic generator, and is an acoustic processing device for modifying and beautifying sound signals by using the psychoacoustic characteristics of human beings. The general exciter transmits the vibration of an internal component of the exciter to a transmission medium of external equipment, so that the transmission medium outputs sound, the voice coil is arranged in the exciter, the voice coil is positioned by virtue of a single support piece, when the exciter works, the vibrating voice coil can move in a direction deviating from the axis direction of the voice coil, the output sound quality is reduced, the exciter is usually bonded and fixed by a contact surface by using viscose glue to support the weight and the vibration of the exciter, the bonding part of the existing exciter is generally arranged at the top of the voice coil, and the voice coil is small in size, so that the stability of connection between the exciter and the outside is poor.

Disclosure of Invention

The embodiment of the invention aims to: an actuator is provided which can improve the sound quality output from an external device.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an exciter, includes support frame and voice coil loudspeaker voice coil, set up the cavity in the support frame, the both ends of cavity axis direction communicate with the outside through first opening and second opening respectively, the voice coil loudspeaker voice coil part sets up in the cavity, the voice coil loudspeaker voice coil pass through first piece and second piece with the support frame is connected, first piece with the second piece is followed the axis direction interval of cavity sets up, the week portion of support frame is provided with a connecting block at least, the connecting block pass through the elastic component with the support frame is connected, the connecting block is located the middle part of elastic component.

As a preferable scheme of the exciter, the elastic member includes an elastic plate and elastic support legs disposed at both sides of the elastic plate, the connection block is disposed on the elastic plate, one end of the elastic support leg is connected to the elastic plate, and the other end is connected to the support frame.

As a preferred embodiment of the actuator, the elastic legs have a wavy, zigzag or arc-shaped cross section along their longitudinal edges.

As a preferable scheme of the exciter, a limit protrusion is arranged on a side edge of the elastic plate, and a side wall of the limit protrusion abuts against the connecting block.

As a preferable mode of the exciter, three connecting blocks are provided, and the three connecting blocks are arranged on the periphery of the support frame at intervals along the circumferential direction.

As a preferable scheme of the exciter, the first branch piece is adjacent to the first opening, the second branch piece is installed in the cavity, a step surface is arranged on a cavity wall of the cavity, the second branch piece is abutted against the step surface, and a diameter of the second branch piece is smaller than an inner diameter of the opening.

As a preferable mode of the exciter, an end surface of the first opening is provided with a mounting groove, and the first supporting piece is mounted in the mounting groove.

As a preferred mode of the exciter, the edge of the section of the first support sheet is in a wave shape, a sawtooth shape or an arc shape; and/or the presence of a gas in the gas,

the edge of the section of the second support piece is in a wave shape, a sawtooth shape or an arc shape.

As a preferable scheme of the exciter, the voice coil includes a ring body and a bracket, the bracket is disposed on the top of the ring body, and an end surface of the connecting block is flush with an end surface of the bracket.

As a preferred embodiment of the exciter, the end faces of the connecting piece and the end face of the bracket are provided with adhesive.

As a preferred embodiment of the actuator, the connecting block is located at an end of the elastic member remote from the supporting frame instead of the connecting block being located at a middle portion of the elastic member, and an edge of a cross section of the elastic member along a length direction thereof is waved, serrated or curved.

The invention has the beneficial effects that: the first support piece and the second support piece are arranged to position the voice coil at the same time, so that the limit of the voice coil can be increased, the voice coil is prevented from moving in the direction of the offset axis, and the stability of the voice coil is improved; through week portion at the support frame sets up the connecting block, can increase the area of being connected of exciter and external equipment, improve the stability of being connected of exciter and external equipment, the elastic component can increase the elasticity of exciter, the both ends of connecting block are passed through the elastic component and are connected with the support frame, the elastic component can be followed two directions and is carried on spacingly to the removal of connecting block, avoid the motion of skew axis direction to appear in the exciter, improve the stability of exciter, and then improve the sound quality of external equipment output.

Drawings

The invention is explained in more detail below with reference to the figures and examples.

Fig. 1 is a perspective view of an actuator according to an embodiment of the present invention (wires not shown).

Fig. 2 is a schematic cross-sectional view of an actuator according to an embodiment of the present invention.

Fig. 3 is a schematic view of the supporting frame and the elastic member according to the embodiment of the invention.

Fig. 4 is a schematic view of an elastic member according to an embodiment of the present invention.

Fig. 5 is a schematic view of the actuator and the external device according to the embodiment of the present invention.

Fig. 6 is a schematic view of the actuator and the external device according to another embodiment of the present invention.

Fig. 7 is a schematic view of the actuator and external device according to still another embodiment of the present invention.

Fig. 8 is a perspective view of an actuator according to another embodiment of the present invention (wires not shown).

Fig. 9 is a perspective view of an actuator according to yet another embodiment of the present invention (wires not shown).

In the figure:

100. an exciter;

1. a support frame; 101. a cavity; 102. reinforcing ribs; 2. a voice coil; 201. a ring body; 202. a support; 3. a first support sheet; 4. a second support; 5. connecting blocks; 6. an elastic member; 601. an elastic plate; 6011. a limiting bulge; 602. an elastic leg; 7. a first magnetically conductive member; 8. a main magnetic plate; 9. a second magnetic conductive member; 10. a top magnetic plate; 11. a terminal assembly; 12. an electric wire; 13. an adhesive layer;

200. a display screen; 300. a first fixing member; 400. and a second fixing member.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, an actuator 100 provided by the present invention includes a support frame 1 and a voice coil 2, a cavity 101 is disposed in the support frame 1, two ends of the cavity 101 in an axial direction are respectively communicated with the outside through a first opening and a second opening, a part of the voice coil 2 is disposed in the cavity 101, the voice coil 2 is connected to the support frame 1 through a first support piece 3 and a second support piece 4, the first support piece 3 and the second support piece 4 are disposed at intervals along the axial direction of the cavity 101, a connection block 5 is disposed on a peripheral portion of the support frame 1, the connection block 5 is connected to the support frame 1 through an elastic member 6, and the connection block 5 is located in a middle portion of the elastic member 6. The first support piece 3 and the second support piece 4 are arranged to position the voice coil 2 at the same time, so that the limit of the voice coil 2 can be increased, the voice coil 2 is prevented from moving in the direction of the offset axis, and the stability of the voice coil 2 is improved; through setting up connecting block 5 in the week portion of support frame 1, can increase the area of being connected of exciter 100 and external equipment, improve the stability of being connected of exciter 100 and external equipment, elastic component 6 can increase the elasticity of exciter 100, elastic component 6 is passed through at the both ends of connecting block 5 and is connected with support frame 1, elastic component 6 can follow two directions and carry on spacingly to connecting block 5's removal, avoid the motion of skew axis direction to appear in exciter 100, improve the stability of exciter 100, and then improve the sound quality of external equipment output.

The basic principle of the exciter 100 is: the frequency band in the audio signal is selected and then sent into a harmonic generator, high-frequency harmonics of the frequency are manufactured and added into the original audio signal to strengthen harmonic components in a frequency modulation area in the original audio signal so as to improve the structure of overtones, the harmonic component is mainly composed of a direct channel and a harmonic excitation channel of the audio signal, and the working process of the exciter 100 is as follows: the audio signals input into the exciter 100 are respectively sent to two channels, one channel obtains a direct signal through a delay line, the direct signal does not carry out harmonic processing, and the frequency characteristic of the audio input signals is reserved; the other part of the audio signals pass through a harmonic excitation circuit formed by an adjustable high-pass filter and a harmonic signal generator to generate rich and adjustable harmonic signals (namely overtones), and then are superposed with the direct signals; and finally, outputting the two paths of superposed signals through a signal mixing amplifier.

In order to ensure the normal operation of the actuator 100, in this embodiment, the first magnetic conducting member 7 is disposed at the second opening of the supporting frame 1, the first magnetic conducting member 7 is in a cylindrical shape with a bottom, the bottom of the first magnetic conducting member 7 blocks the second opening, the periphery of the first magnetic conducting member 7 is disposed in the cavity 101 of the supporting frame 1, the bottom of the first magnetic conducting member 7 blocks the second opening, the cavity 101 is sequentially stacked with a main magnetic plate 8, a second magnetic conducting member 9 and a top magnetic plate 10 along the direction of the second opening toward the first opening, the main magnetic plate 8, the second magnetic conducting member 9 and the top magnetic plate 10 are all in a disc shape, wherein the main magnetic plate 8 is partially disposed inside the voice coil 2, the second magnetic conducting member 9 and the top magnetic plate 10 are both disposed inside the voice coil 2, a gap is formed between the periphery of the main magnetic plate 8 and the inner side surface of the first magnetic conducting member 7, a gap is also formed between the periphery of the second magnetic conducting member 9 and the periphery of the top magnetic plate 10 and the, the actuator 100 further includes a terminal assembly 11, the terminal assembly 11 being mounted on the support frame 1 and located outside the cavity 101, the terminal assembly 11 and the voice coil 2 being connected by a wire 12. When an acoustic signal is input to the voice coil 2 of the exciter 100 through the terminal assembly 11, the top magnetic plate 10, the second magnetic conductive member 9, the main magnetic plate 8, the first magnetic conductive member 7, and other components may vibrate, thereby driving the supporting frame 1 and the connecting block 5 to vibrate, so that an external device connected to the exciter 100 vibrates to output sound. The use of the exciter 100 causes the entire transmission medium of an external device such as a flat panel, which is in contact with the exciter 100, to emit sound. Thus, the propagation of sound can be improved and the sound quality can be improved. Further, by selecting a material or a shape of an external device transmission medium for outputting sound, it is possible to output heavy bass without using a woofer (woofer) or the like, and the exciter 100 can improve sound quality, timbre, and increase a sense of space of sound by adding components to the sound in various ways; the exciter 100 can create high frequency harmonics, and also has the functions of low frequency expansion, music style and the like, so that the bass effect is more perfect and the music is more expressive.

In an embodiment, referring to fig. 8 and 9, the connecting block 5 is located at an end of the elastic member 6 away from the support frame 1, referring to fig. 8, a length direction of the elastic member 6 may be consistent with a radial direction of the support frame 1, referring to fig. 9, the elastic member 6 is arc-shaped, and a circle center of the arc-shaped elastic member 6 is consistent with a circle center of the support frame 1; the edge of the section of the elastic part 6 along the length direction is wavy, zigzag or arc-shaped, and the connection mode of the connecting block 5 and the support frame 1 can be selected according to actual requirements during design.

Referring to fig. 4, in particular, the elastic member 6 includes an elastic plate 601 and elastic legs 602 disposed at both sides of the elastic plate 601, the connection block 5 is disposed on the elastic plate 601, one end of the elastic leg 602 is connected to the elastic plate 601, and the other end is connected to the supporting frame 1. The two elastic support legs 602 on the two sides of the elastic plate 601 respectively support and limit the elastic plate 601 from two directions, and when the exciter 100 is in a working state and vibrates, the connecting block 5 moves along the axial direction of the exciter 100 under the supporting and limiting effects of the two elastic support legs 602, so that the movement direction of the connecting block 5 is consistent with the movement direction of the voice coil 2, the stability of the exciter 100 is improved, and the output sound quality is improved.

Specifically, in the present embodiment, the edge of the elastic leg 602 along the length direction thereof is wavy, and the elasticity of the elastic leg 602 can be improved by providing the wavy elastic leg 602, so as to improve the stability of the actuator 100. In other embodiments, the edges of the resilient legs 602 along their length may also be serrated or curved.

Specifically, the side of elastic plate 601 is provided with spacing arch 6011, and spacing arch 6011's lateral wall and connecting block 5 butt, and connecting block 5 and elastic plate 601 adopt the mode of viscose bonding to be connected. Through setting up spacing arch 6011, spacing arch 6011 can be installed spacing to connecting block 5, reduces the installation location degree of difficulty between elastic plate 601 and the connecting block 5, improves exciter 100's packaging efficiency.

Specifically, in the present embodiment, three connecting blocks 5 are provided, and three connecting blocks 5 are provided at intervals in the circumferential direction on the periphery of the supporting frame 1, however, in other embodiments, the number of the connecting blocks 5 may be two, four, or even more than four. By providing a plurality of connection blocks 5, the connection area of the actuator 100 and the external device can be increased, and the stability of the actuator 100 can be further improved.

In the present embodiment, three connecting blocks 5 are uniformly spaced at the periphery of the supporting frame 1, so that the exciter 100 can be balanced in stress, and the quality of the sound output by the external device can be improved.

Specifically, first branch piece 3 is adjacent to first opening, and second branch piece 4 is installed in cavity 101, is provided with the step face on the chamber wall of cavity 101, and second branch piece 4 and step face butt, and the diameter of second branch piece 4 is less than the internal diameter of second opening. Because the installation location of first branch piece 3 and second branch piece 4 directly influences the working effect of voice coil loudspeaker voice coil 2, consequently, set up the step face and can reduce the location degree of difficulty between second branch piece 4 and the support frame 1, guaranteed the quality of external equipment output sound, the step face simple structure can reduce the processing degree of difficulty of support frame 1, reduces the manufacturing cost of exciter 100.

Specifically, the end face of the first opening is provided with a mounting groove, and the first support piece 3 is mounted in the mounting groove. Because the installation location of first support 3 and second support 4 directly influences the working effect of voice coil loudspeaker voice coil 2, consequently, set up the mounting groove, can reduce the location degree of difficulty between first support 3 and the support frame 1, refer to fig. 2, the diameter of first support 3 is great, installs first support 3 at first open-ended terminal surface, can reduce the size of support frame 1, reduces exciter 100's manufacturing cost.

Referring to fig. 3, specifically, the support frame 1 is provided with reinforcing ribs 102 on the outer periphery thereof. Because the cavity 101 is arranged in the support frame 1, the cavity 101 can affect the strength of the support frame 1, and the reinforcing ribs 102 are arranged, so that the strength of the support frame 1 can be improved, and the working effect of the exciter 100 can be ensured.

Specifically, in the present embodiment, the edge of the cross section of the first branch piece 3 is wavy, and the cross section of the second branch piece 4 is also wavy. Under the working state of the exciter 100, the voice coil 2 can move in a certain range in the axis direction, the first support piece 3 and the second support piece 4 in the wave shape have certain elasticity, and the areas, close to the voice coil 2, of the first support piece 3 and the second support piece 4 can move along with the voice coil 2, so that the situation that the first support piece 3 and the second support piece 4 rub with the moving voice coil 2 to cause abrasion of the voice coil 2 is avoided, and the working effect of the exciter 100 is ensured.

In other embodiments, the edges of the cross-section of the first branch 3 and the edges of the cross-section of the second branch 4 may also be serrated or curved.

Specifically, the voice coil 2 includes a ring body 201 and a bracket 202, the bracket 202 is disposed on the top of the ring body 201, and the end surface of the connection block 5 is flush with the end surface of the bracket 202. By providing the support 202, the connection area between the voice coil 2 and the external device can be increased, and the stability of the actuator 100 can be improved.

Specifically, the end face of the connecting block 5 and the end face of the bracket 202 are both provided with the adhesive layer 13, and in this embodiment, the connecting block 5 and the bracket 202 are both connected with an external device using an adhesive.

Specifically, the exciter 100 has various connection modes with external devices, and referring to fig. 5, the connection block 5 and the bracket 202 of the exciter 100 are both connected with external devices such as the display screen 200 or the vibrating plate; referring to fig. 6, a first fixing member 300 is further connected to a side of the exciter 100 away from an external device such as the display screen 200 or the vibration plate, and the first fixing member 300 may increase stability of connection between the exciter 100 and the external device; referring to fig. 7, a bracket 202 of an exciter 100 is connected to an external device such as a display screen 200 or a vibration plate, a connecting block 5 of the exciter 100 is connected to a second fixing member 400, and the second fixing member 400 spaces the connecting block 5 from the external device; of course, the exciter 100 may be directly connected to an external device such as the display 200 or the vibration plate, or may be indirectly fixed to the external device by other means such as an adhesive. The exciter 100 operates to propel the external device, and the external device, when vibrated, may in turn propel the exciter 100, both in a back and forth motion, producing sound and low frequency effects. Of course, the number of the exciters 100 can be one, two or even more, and the number of the exciters 100 can be selected according to the actual requirement of the device to achieve the optimal sounding effect.

Claims

1. The utility model provides an exciter, its characterized in that, includes support frame and voice coil loudspeaker voice coil, set up the cavity in the support frame, the both ends of cavity axis direction communicate with the outside through first opening and second opening respectively, the voice coil loudspeaker voice coil part sets up in the cavity, the voice coil loudspeaker voice coil through first piece and second piece with the support frame is connected, first piece with the second piece is followed the axis direction interval of cavity sets up, the week portion of support frame is provided with a connecting block at least, the connecting block pass through the elastic component with the support frame is connected, the connecting block is located the middle part of elastic component.

2. The actuator according to claim 1, wherein said elastic member comprises an elastic plate and elastic legs disposed on both sides of said elastic plate, said connecting block is disposed on said elastic plate, one end of said elastic leg is connected to said elastic plate, and the other end is connected to said supporting frame.

3. An actuator according to claim 2, wherein the resilient legs are wavy, serrated or arcuate in cross-section along their length.

4. An actuator according to claim 2, wherein the side of the elastic plate is provided with a stopper protrusion, and a side wall of the stopper protrusion abuts against the connecting block.

5. An actuator according to claim 1, wherein there are three connecting blocks arranged circumferentially spaced around the support.

6. An actuator according to claim 1, wherein the first leg is adjacent to the first opening, the second leg is mounted in the cavity, a step surface is provided on a wall of the cavity, the second leg abuts the step surface, and a diameter of the second leg is smaller than an inner diameter of the opening.

7. An exciter according to claim 1, wherein an end face of the first opening is provided with a mounting groove in which the first supporting piece is mounted.

8. An actuator according to claim 1, wherein the edges of the first strut cross-section are wavy, serrated or arcuate; and/or the presence of a gas in the gas,

9. An actuator according to claim 8, wherein the voice coil comprises a ring body and a holder, the holder is disposed on top of the ring body, and an end surface of the connection block is flush with an end surface of the holder.

10. An actuator according to claim 9, wherein the end faces of the connector blocks and the end faces of the holder are provided with glue.

11. An actuator according to claim 1, wherein the attachment block is located at the end of the resilient member remote from the support frame instead of being located in the middle of the resilient member, the resilient member having a wave, saw-tooth or curved cross-section along its length.