CN112706672B - Automobile seat audio headrest - Google Patents

Abstract

The invention provides an automobile seat audio headrest, which comprises a base module and a wing part arranged on the base module, wherein a loudspeaker is arranged on the wing part; the wing portion comprises a left wing portion and a right wing portion; on a projection plane vertical to the front and back directions of the vehicle body, the left wing part and the right wing part are respectively arranged at the left side and the right side of the head of a driver or a passenger. According to the invention, on the premise of ensuring the safety performance, the loudspeaker is integrated into the seat headrest, the comfort and the privacy are simultaneously considered, the functions of the automobile seat headrest are enriched, and safer and more comfortable driving experience and more comfortable riding environment can be provided for a driver or a passenger.

Description

Automobile seat audio headrest

Technical Field

The invention relates to the technical field of automobile seats, in particular to an automobile seat audio headrest.

Background

With the progress of society, the living standard is continuously improved and the automobile technology is developed, and the automobile is also developed from the initial transportation tool into a mobile scene integrating travel, entertainment and leisure life nowadays. Most of the existing automobile seat headrests on the market only have simple supporting functions. The stereo set in the car is laid too singly, and driver or passenger's unable independent experience, seat music headrest can provide a subregion independent experience environment for driver or passenger.

Disclosure of Invention

The invention aims to provide an audio headrest for a car seat, which solves at least one technical problem in the prior art.

In order to solve the above technical problem, the present invention provides an audio headrest for a car seat, comprising: the loudspeaker comprises a basic module (body) and a wing part arranged on the basic module, wherein a loudspeaker is arranged on the wing part;

the wing portion comprises a left wing portion and a right wing portion; on a projection plane vertical to the front and back directions of the vehicle body, the left wing part and the right wing part are respectively arranged at the left side and the right side of the head of a driver or a passenger.

In the application, a base module (or called a headrest body) is a base part of a headrest, and a headrest up-and-down adjusting structure is contained in the base module; the lower part is provided with a headrest rod for supporting the whole headrest assembly. The speaker sets up in the left and right sides of headrest, presses close to the ear of passenger's the left and right sides more, provides navigation pronunciation or amusement music for the passenger to reach better hearing effect.

Furthermore, the loudspeaker is connected with the audio playing device through a wire harness; the two ends of the wiring harness are respectively connected with the seat main wiring harness and the loudspeaker and used for transmitting power and audio signals to the loudspeaker, and the wiring harness is integrally arranged inside the headrest and invisible in appearance.

Or the loudspeaker is connected with the audio playing device through a Bluetooth module, a wi-fi module and other wireless transmission modules.

Furthermore, a left loudspeaker and a right loudspeaker are respectively arranged on the left wing part and the right wing part.

Further, the head of the driver or passenger rests on the base module, and the speaker is disposed facing the ear of the driver or passenger in the height direction.

Further, the wing portions may be pivoted on the base module away from or close to the head of the driver or passenger.

The left wing part and the right wing part are respectively arranged at the left end and the right end of the middle fixing plate; the middle fixing plate is detachably connected to the base module.

Preferably, the middle fixing plate is connected to the base module through clamping, threaded connection and the like. When adopting the joint mode, be provided with trip or draw-in groove structure on the middle fixed plate, be provided with on the basic module with the external interface or the buckle structure of trip or draw-in groove adaptation.

Can realize the standardization and the modularization of wing portion and basic module through middle fixed plate, after with joint or threaded connection structure standardization, can realize the quick change and the installation of the headrest of different motorcycle types, different design styles and the wing portion of different specifications or style, improve assembly efficiency, reduction in production cost.

Further, the left and right wing portions may be pivoted on the intermediate fixing plate away from or close to the head of the driver or passenger, respectively.

The wing part can be directly pivoted on the basic module in a swinging way, or the wing part (the left wing part and the right wing part) can be arranged on the middle fixing plate in a swinging way and then arranged on the basic module through the middle fixing plate. The left and right wing portions may gradually approach or move away from the head of the driver or passenger during the swing. When the left wing part and the right wing part are close to the head of a driver or a passenger through swinging, the loudspeaker can be gradually close to the ear of the driver or the passenger, so that a clearer sound effect is provided for the driver or the passenger; through the rotation angle who adjusts wing portion, can be so that the speaker more presses close to passenger or driver's ear, guaranteed good travelling comfort and privacy.

Further, the wing portion includes in order in the thickness direction: decorative board, soundproof cotton, bracket and foaming; the bracket is provided with a lug (namely an installation connecting plate);

the sound insulation cotton is filled in the closed space and further used for isolating the sound of the loudspeaker from being transmitted backwards, and the experience effect of the sound is improved;

the loudspeaker is arranged on the bracket ear plate through the fixed bracket; the foaming covers the front side of the bracket, and through holes for accommodating the loudspeakers are reserved at the corresponding positions of the loudspeakers by the foaming.

Furthermore, the front side (the side close to the passenger) of the middle fixing plate is coated with foaming.

The outside parcel of middle fixed plate and wing portion has the face cover, and the design of punching is located at the speaker correspondence to the face cover to satisfy the penetrability requirement of speaker sound.

Wherein, the plaque is fixed on the auricle of support, can play decoration, syllable-dividing and dustproof effect. The soundproof cotton is preferably adhered to a bracket side of the sheathing panel so as to facilitate assembly.

Further, the wing-shaped swinging device further comprises an execution module for keeping and changing the swinging angle of the wing part. The execution module can be a manual, electric, pneumatic or hydraulic driving mechanism and a transmission mechanism thereof. For example, electric motors and their gear drives; hydraulic, pneumatic or electric telescopic rods, etc.

By adopting the technical scheme, the invention has the following beneficial effects:

according to the automobile seat audio headrest provided by the invention, on the premise of ensuring the safety performance, the loudspeaker is integrated into the seat headrest, the comfort and the privacy are both considered, the functions of the automobile seat headrest are enriched, and a safer and more comfortable driving experience and a more comfortable riding environment can be provided for a driver or a passenger.

And the wings at the two sides of the headrest are adjusted, so that the loudspeaker is closer to the ears of passengers, and the passengers can enjoy the hearing feast of themselves in the riding process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a perspective view of an acoustic headrest for a vehicle seat provided in embodiment 1 of the present invention;

FIG. 2 is a top view of the acoustic headrest of the vehicle seat of FIG. 1;

fig. 3 is a schematic view of a layout structure of speakers in embodiment 1 of the present invention;

fig. 4 is a schematic view showing a state before turning over of the wing part in embodiment 1;

FIG. 5 is a schematic view showing a state in which the wings of example 1 are turned;

FIG. 6 is a rear view of an intermediate fixing plate in embodiment 1;

fig. 7 is a schematic structural view of a base module in embodiment 1;

FIG. 8 is an exploded view of a wing part in embodiment 1;

FIG. 9 is a block diagram of an execution module according to embodiment 2 of the present invention;

fig. 10 is a schematic diagram of an execution module according to embodiment 2 of the present invention.

Reference numerals:

1-a head; 10-a base module; 11-an external interface; 20-wing part; 21-left wing; 22-right wing portion; 23-a plaque; 24-soundproof cotton; 25-a scaffold; 26-foaming; 27-face sleeve; 30-a loudspeaker; 40-a wiring harness; 50-middle fixing plate; 51-buckling; 100-an execution module; 110-a cylindrical body; 111-a limiting groove; 112-ratchet tooth configuration; 112 a-holding step portion; 112 b-a transition; 120-a first push rod; 121-top push plate; 122-ring tooth configuration; 123-limit strip blocks; 130-a second push rod; 131-guide ribs; 132-a sharp corner; 140-a rack and pinion gear pair; 141-a drive rack; 142-a gear structure; 151-first return spring; 152-a second return spring.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be further explained with reference to specific embodiments.

Example 1

As shown in fig. 1, the present embodiment provides an audio headrest for a car seat, including: a base module 10 (body), and a wing part 20 provided on the base module 10, the wing part 20 being provided with a speaker 30;

the wing part 20 is a left wing part 21 and a right wing part 22; the left wing part 21 and the right wing part 22 are respectively provided with a loudspeaker 30. The left wing part 21 and the right wing part 22 are respectively arranged on the left side and the right side of the head of a driver or a passenger on a projection plane vertical to the front-back direction of the vehicle body. In the present application, the front side of the headrest is the side on which a passenger or driver sits, and the left and right hands of the passenger or driver correspond to the left and right sides of the headrest, respectively.

In the present application, the base module 10 (or called headrest body) is a base component of the headrest, and includes a headrest up-down adjustment structure therein; the lower part is provided with a headrest rod for supporting the whole headrest assembly. The speakers 30 are disposed on the left and right sides of the headrest, and are closer to the ears of the left and right sides of the passenger, so as to provide navigation voice or entertainment music for the passenger, thereby achieving better hearing effect.

The loudspeaker 30 is connected with an audio playing device through a wiring harness 40; both ends of the wire harness 40 are connected to the seat main wire harness 40 and the speaker 30, respectively, for transmitting power and audio signals to the speaker 30, and the wire harness 40 is integrally disposed inside the headrest, with an invisible appearance.

By adjusting the height of the headrest such that the head of the driver or passenger rests on the base module 10 of the headrest, the speakers 30 are arranged facing the ears of the driver or passenger in the height direction.

Wherein preferably, as shown in fig. 1-3, the wing part 20 is swingably provided on the base module 10 by a hinge or a pivot shaft. As shown in fig. 4 and 5, when the left and right wings 21 and 22 approach the head 1 of the driver or passenger by swinging, the speaker 30 can gradually approach the ear of the driver or passenger, thereby providing clearer sound effect to the driver or passenger; therefore, the loudspeaker 30 can be closer to the ears of passengers or drivers by adjusting the turning angle of the wing parts 20, and good comfort and privacy are ensured.

As shown in fig. 6, the present embodiment further includes a middle fixing plate 50, and the left wing part 21 and the right wing part 22 are respectively disposed at the left and right sides of the middle fixing plate 50; the intermediate fixing plate 50 is detachably coupled to the base module 10. In this embodiment, the middle fixing plate 50 is connected to the base module 10 by a buckle 51 (or hook) at the back thereof. As shown in fig. 7, the base module 10 is provided with an external interface 11 adapted to the buckle 51.

The standardization and modularization of the wing part 20 and the base module 10 can be realized through the middle fixing plate 50, and after the clamping or threaded connection structure is standardized, the rapid exchange and installation of headrests of different vehicle types and different design styles and wing parts 20 of different specifications or styles can be realized, the assembly efficiency is improved, and the production cost is reduced.

Wherein, the left wing part 21 and the right wing part 22 can be pivoted on the middle fixing plate 50 away from or close to the head 1 of the driver or passenger respectively. Namely, the left wing part 21 and the right wing part 22 are swingably provided on the middle fixing plate 50 and then provided on the base module 10 through the middle fixing plate 50. The left wing portion 21 and the right wing portion 22 may gradually approach or move away from the head 1 of the driver or passenger during the swing.

As shown in fig. 8, wing portion 20 includes, in order from the rear to the front in the thickness direction: a decorative plate 23, soundproof cotton 24, a bracket 25 and a foam 26; the bracket 25 is provided with a lug (namely, a mounting connecting plate); the bracket 25 is pivotably connected to the intermediate fixing plate 50 by a hinge or a pivot shaft.

The decorative plate 23 is connected to the ear plate of the bracket 25 in a clamping or threaded manner, a closed space is formed between the ear plate of the bracket 25 and the decorative plate 23, and the soundproof cotton 24 is filled in the closed space and is further used for isolating the sound of the loudspeaker 30 from propagating backwards, so that the experience effect of sound is improved; the loudspeaker 30 is arranged on the ear plate of the bracket 25 through a fixing frame; foam 26 covers the front side of bracket 25, and foam 26 leaves a through hole for receiving speaker 30 at a position corresponding to speaker 30. The front side (the side closer to the passenger) of the intermediate fixing plate 50 is also coated with a foaming material. The middle fixing plate 50 and the outer portion of the wing part 20 are wrapped by the surface cover 27, and the surface cover 27 is designed to be perforated at the position corresponding to the loudspeaker 30, so that the sound penetrability requirement of the loudspeaker 30 is met.

Wherein, the plaque 23 is fixed on the lug of the bracket 25, and can play the roles of decoration, sound insulation and dust prevention. The soundproof cotton 24 is preferably adhered to a side of the bracket 25 of the facing sheet 23 so as to facilitate assembly.

According to the automobile seat audio headrest provided by the invention, on the premise of ensuring the safety performance, the loudspeaker 30 is integrated into the seat headrest, the comfort and the privacy are both considered, the functions of the automobile seat headrest are enriched, and a safer and more comfortable driving experience and a more comfortable riding environment can be provided for a driver or a passenger. And by adjusting the wing parts 20 at both sides of the headrest, the loudspeaker 30 can be closer to the ears of the passengers, so that the passengers can enjoy the hearing feast of themselves in the riding process.

Compared with the traditional vehicle-mounted loudspeaker, the loudspeaker on the headrest is closer to the ears of a human body, the effect is closer to that of the earphone, meanwhile, the use of the headrest loudspeaker is safer than the direct use of the earphone in the aspect of use scenes, and a good balance point is found between driving safety and good entertainment experience;

the invention is beneficial to improving privacy, the sound transmission of the traditional vehicle-mounted loudspeaker is open, and the vehicle-mounted loudspeaker has great limitation at present when more and more consumers pay attention to riding experience; when the invention is applied to the whole vehicle, the effects of non-interference and independent sound at each position can be formed. Such as: when a main driver receives navigation sound information and passengers at other positions listen to music, all the subareas are not interfered with each other, so that the method has good privacy and avoids the uncomfortable condition of ears due to long-time use of earphones;

thirdly, the invention is designed with a small wing structure, and the two wings can adjust the turning angle of the small wing according to the requirements of users, thereby improving the comfort.

Example 2

This example is substantially the same as example 1, except that:

as shown in fig. 9, the present embodiment discloses an audio headrest for a seat of a vehicle with an actuating module 100 for maintaining and changing the swing angle of the wing portion.

The execution module 100 in the present embodiment is provided on the base module 10; alternatively, the base module 10 may be provided with an installation space, and the actuator module 100 may be disposed on the intermediate fixing plate 50.

The execution module 100 includes: a cylindrical body 110, a first push rod 120, a second push rod 130 and a gear-rack transmission pair 140. The tubular body 110 is substantially disposed along the front-rear direction of the vehicle body, the top ends of the first push rod 120 and the second push rod 130 are inserted into the tubular body 110 from the front end and the rear end, respectively, and the first push rod 120 and the second push rod 130 can slide along the middle through hole of the tubular body 110.

The rack and pinion gear pair 140 includes a gear rack 141 and a gear structure 142 that are engaged with each other; the driving rack 141 is rotatably connected to the end of the second push rod 130 through an intermediate connection member and moves synchronously with the second push rod 130. The gear structure 142 is coaxially disposed with the pivot shaft of the wing portion 20, and is relatively and fixedly connected to the wing portion 20. When the second push rod 130 moves in the front-rear direction, the wing part 20 is driven to swing through the driving rack 141 and the gear structure 142.

The actuating module 100 further comprises a first return spring 151 and a second return spring 152, the first return spring 151 being arranged between the first push rod 120 and the tubular body 110, the first return spring 151 tending to force the first push rod 120 to move forward when it is operated;

the second return spring 152 has one end connected to the cylindrical body 110, the base module 10 or the intermediate fixing plate 50 and the other end connected to the second push rod 130, and tends to force the second push rod 130 to move forward during operation. When the second push rod 130 moves forward, the wing parts 20 are driven to swing backward, away from the head of the passenger or the driver, and return to the initial state.

By pressing the end of the first push rod 120, the first push rod 120 pushes the second push rod 130 to move backward against the spring force of the first return spring 151 and the second return spring 152, and the wing part 20 is driven by the rack-and-pinion pair 140 to swing forward, close to the head of the passenger or driver, and finally close to the ear.

The end of the first push rod 120 is provided with a push plate 121, and the push plate 121 is externally wrapped with foam, a surface cover and the like, so that a passenger or a driver can conveniently push against the push plate 121 by using the head, and further swing of the wing part 20 is realized.

As shown in fig. 10, in order to maintain the wing part 20 in the initial state before swinging or in the working state after swinging, a limiting groove 111 is provided on the inner side wall of the middle through hole of the cylindrical body 110, a ratchet tooth structure 112 is provided on one end of the inner side wall of the middle through hole at the rear side of the limiting groove 111, and the ratchet tooth structure 112 includes: retaining a step portion 112a and a transition portion 112b.

The top end outer circle of the second push rod 130 is provided with a guide rib 131 which is matched with the limiting groove 111 in a guiding way, and the guide rib 131 is matched with the limiting groove 111 to limit the second push rod 130 to rotate along the circumferential direction of the cylindrical body 110. The guide rib 131 is provided with a sharp corner 132 near the front end of the first push rod 120 to engage with the ratchet tooth structure 112.

The side surface of the excircle of the front end of the first push rod 120 is provided with a limit strip 123 which is matched with the limit groove 111 in a guiding way, so that the first push rod 120 is prevented from rotating. The end surface of the front end of the first push rod 120 is provided with an annular tooth structure 122 which is matched with the sharp corner 132. The first push rod 120 is pushed backwards, the first push rod 120 moves backwards, the annular tooth structure 122 at the front end of the first push rod 120 pushes the pointed part 132 to force the second push rod 130 to slide backwards, when the guide rib 131 completely slides out of the limiting groove 111, the pointed part 132 slides along the tooth surface of the annular tooth structure 122 under the action of the second return spring 152, and the tooth surface of the annular tooth structure 122 guides the pointed part 132 to rotate and slide into the retaining stepped part 112a of the ratchet tooth structure 112; when the pressing of the first push rod 120 is stopped, the first push rod 120 moves forward and returns by the first return spring 151, and the limiting groove on the holding step part 112a prevents the sharp corner part 132 from sliding further, thereby forcing the wing part 20 to maintain the swing-back working state.

When the first push rod 120 is pressed forcibly again, the tooth face of the annular tooth structure 122 of the first push rod 120 again guides the sharp corner portion 132 to slide, the sharp corner portion 132 slides out of the holding step portion 112a of the ratchet tooth structure 112 and slides into the limit groove 111 along the transition portion 112b of the ratchet tooth structure 112; when the pressing of the first push rod 120 is stopped, the first push rod 120 moves forward and returns under the action of the first return spring 151, the second push rod 130 moves forward and returns under the action of the second return spring 152, and the wing part 20 is swung backward and returned to the initial state through the rack-and-pinion pair 140.

A limiting structure such as a limiting step or a limiting groove is arranged between the first push rod 120 and the cylindrical body 110 to prevent the first push rod 120 from being ejected forwards under the action of a spring force.

The execution module 100 in this embodiment does not need to provide an additional power source, does not need a passenger to manually swing the wing part, and can change the swing angle of the wing part 20 only by pushing the top push plate 121 backwards with the head, which is simple and convenient, and particularly avoids traffic accidents caused by manual operation of the wing part by a driver during driving; thereby being safer and more reliable.

The push plate 121 is under the parcel of foaming dough cover, and the outside is invisible, and after pressing, the push plate 121 can automatic recovery initial condition under the effect of spring force, can not influence the whole outward appearance of headrest from this.

In case of a sudden safety accident, the passenger or the driver can press the push plate 121 through the head to force the wing parts 20 to swing and protect the two sides of the head, so as to prevent the head from being hurt by foreign objects.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.

Claims (9)

1. An automobile seat audio headrest, comprising: the device comprises a base module and a wing part arranged on the base module, wherein a loudspeaker is arranged on the wing part;

the wing portion comprises a left wing portion and a right wing portion; on a projection plane vertical to the front and rear directions of the vehicle body, the left wing part and the right wing part are respectively arranged at the left side and the right side of the head of a driver or a passenger;

the wing swing angle adjusting device further comprises an execution module used for keeping and changing the swing angle of the wing part, wherein the execution module comprises: the cylinder body is arranged along the front and back direction of the vehicle body, the top ends of the first push rod and the second push rod are respectively inserted into the cylinder body from the front end and the back end, and the first push rod and the second push rod can slide along a middle through hole of the cylinder body;

the gear rack transmission pair comprises a transmission rack and a gear structure which are meshed with each other; the gear structure is coaxially arranged with the pivot shaft of the wing part and is relatively fixedly connected with the wing part;

the execution module also comprises a first return spring and a second return spring, the first return spring is arranged between the first push rod and the cylindrical body, and the first return spring tends to force the first push rod to move forwards when working;

when the second push rod moves forwards, the wing part is driven to swing backwards and is far away from the head of a passenger or a driver, and the second push rod returns to the initial state;

by pressing the tail end of the first push rod, the first push rod pushes the second push rod to overcome the spring forces of the first return spring and the second return spring to move backwards, and the gear and rack transmission pair drives the wing part to swing forwards, to be close to the head of a passenger or a driver and finally to be close to the ear;

be provided with the spacing groove on the middle through-hole inside wall of the tube-shaped body, middle through-hole inside wall is provided with ratchet tooth structure in spacing groove rear side one end, and ratchet tooth structure includes: a holding step portion and a transition portion;

the excircle at the top end of the second push rod is provided with a guide rib which is in guide fit with the limiting groove, and the guide rib is matched with the limiting groove to limit the second push rod to rotate along the circumferential direction of the cylindrical body;

the side face of the excircle of the front end of the first push rod is provided with a limiting strip block which is matched with the limiting groove in a guiding manner, so that the first push rod is prevented from rotating.

2. The car seat audio headrest of claim 1, wherein said speaker is connected to an audio playback device via a wiring harness;

or the loudspeaker is connected with the audio playing device through the wireless transmission module.

3. The automotive seat headrest of claim 1, wherein said left and right wings have respective left and right speakers disposed thereon.

4. The car seat audio headrest of claim 1, wherein a driver or passenger's head rests on the base module, the speaker being disposed facing an ear of the driver or passenger in a height direction.

5. The car seat audio headrest of claim 1, wherein said wing portions are pivotally connected to said base module away from or near a driver or passenger head.

6. The audio headrest of claim 1, further comprising a middle fixing plate, wherein the left wing portion and the right wing portion are respectively disposed at left and right ends of the middle fixing plate; the middle fixing plate is detachably connected to the base module.

7. The car seat audio headrest of claim 6, wherein the intermediate fixing plate is connected to the base module by a snap fit or a screw thread.

8. The car seat audio headrest of claim 6, wherein said left and right wings are pivotally mounted to said intermediate mounting plate away from or towards the head of the driver or passenger, respectively.

9. The car seat audio headrest of claim 1, wherein the wing portions sequentially include in a thickness direction: decorative board, soundproof cotton, bracket and foaming; the lug is arranged on the bracket;

the sound insulation cotton is filled in the closed space and further used for isolating the sound of the loudspeaker from being transmitted backwards, and the experience effect of the sound is improved;

the loudspeaker is arranged on the bracket ear plate through the fixed bracket; the foaming covers the front side of the bracket, and through holes for accommodating the loudspeakers are reserved at the corresponding positions of the loudspeakers by the foaming.

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