CN217159916U

CN217159916U - Impedance convertible automobile loudspeaker

Info

Publication number: CN217159916U
Application number: CN202123451092.XU
Authority: CN
Inventors: 刘安康; 田保明; 靳安超
Original assignee: Innovative Audio International Co ltd
Current assignee: Innovative Audio International Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-08-09
Anticipated expiration: 2031-12-31

Abstract

The utility model relates to a speaker field discloses a convertible formula automotive speaker of impedance, including shell subassembly, pronunciation subassembly and terminal subassembly. The shell subassembly includes backshell and basin frame, and the basin frame is connected on the backshell, and the basin frame is inside to be linked together with the backshell is inside, and heat dissipation channel has been seted up to the basin frame. The sounding group comprises T iron, a magnet, a washer, a voice coil and drum paper, the T iron is arranged in the rear shell, the magnet and the washer are arranged on the T iron, a magnetic gap is formed between the washer and the T iron, the voice coil is arranged in the magnetic gap, the inner end and the outer end of the drum paper are connected to the voice coil and the basin frame respectively, and the voice coil comprises a first winding group and a second winding group. The terminal assembly comprises an impedance switch, the first winding group and the second winding group are connected through the impedance switch, and the impedance switch is used for enabling the first winding group and the second winding group to be connected in series or in parallel. The loudspeaker has better heat dissipation effect, the shell is not easy to deform, and the working impedance can be changed.

Description

Impedance convertible automobile loudspeaker

Technical Field

The utility model relates to a speaker field especially relates to a convertible formula automotive speaker of impedance.

Background

The automobile loudspeaker is an important component of vehicle-mounted entertainment, and the auditory sensation formed by the automobile loudspeaker influences the vehicle using experience of a user. However, the speaker with single impedance is restricted in the matching of the system, so that users can feel comfortable. Meanwhile, the loudspeaker also has the defects of poor heat dissipation effect, easy deformation of the shell and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, providing a convertible formula automotive speaker of impedance, the radiating effect is better, and shell non-deformable can also realize that the working impedance changes.

The purpose of the utility model is realized through the following technical scheme:

an impedance convertible automotive speaker comprising:

the device comprises a shell assembly, a support and a cover, wherein the shell assembly comprises a rear shell and a basin stand, the basin stand is connected to the rear shell, the interior of the basin stand is communicated with the interior of the rear shell, and the basin stand is provided with a heat dissipation channel;

the sounding assembly comprises a T iron, a magnet, a washer, a voice coil and drum paper, the T iron is arranged in the rear shell, the magnet and the washer are both arranged on the T iron, a magnetic gap is formed between the washer and the T iron, the voice coil is arranged in the magnetic gap, the inner end and the outer end of the drum paper are respectively connected to the voice coil and the basin frame, and the voice coil comprises a first winding group and a second winding group; and

and the first winding group and the second winding group are connected through the impedance switch, and the impedance switch is used for connecting the first winding group and the second winding group in series or in parallel.

In one embodiment, the bottom wall of the rear housing is provided with a lower heat dissipation hole, and the lower heat dissipation hole is communicated with the heat dissipation channel.

In one embodiment, the heat dissipation channel comprises an upper heat dissipation hole and an upper heat dissipation port, the upper heat dissipation hole is formed in the bottom wall of the basin stand, and the upper heat dissipation port is formed in the side wall of the basin stand.

In one embodiment, the basin stand is provided with a first reinforcing rib in the side wall.

In one embodiment, the enclosure assembly further comprises a bezel attached to the outer end of the drum paper and a sealing gasket attached to the bezel.

In one embodiment, the sealing washer is provided with a clamping convex part, the face frame is provided with a clamping groove, and the clamping convex part is matched with the clamping groove; the face frame is provided with protruding reinforcing ribs, the drum paper is provided with sunken reinforcing ribs, and the protruding reinforcing ribs are matched with the sunken reinforcing ribs.

In one embodiment, the housing assembly further comprises a dust cap disposed on an inner end of the drum paper.

In one embodiment, the voice coil further comprises a bobbin, and the first winding group and the second winding group are wound outside the bobbin.

In one of them embodiment, pronunciation subassembly still includes centering subassembly, centering subassembly includes bullet ripples, centering support and fixed washer, centering leg joint is in on the diapire of basin frame, the inner and the outer end of bullet ripples are connected respectively the voice coil loudspeaker voice coil with on the centering support, fixed washer supports to press on the outer end of bullet ripples.

In one embodiment, the side wall of the centering bracket is provided with an inner heat dissipation port, and the inner heat dissipation port is communicated with the heat dissipation channel.

Compared with the prior art, the utility model discloses at least, following advantage has:

1. the utility model forms an interaction magnetic field through the T iron, the magnet, the washer and the voice coil, and drives the drum paper to vibrate and make sound; the impedance switch is used for switching the connection mode of the first winding group and the second winding group into series connection or parallel connection, so that the working impedance change of the voice coil can be realized.

2. The utility model discloses a thermovent has been seted up to the lateral wall of basin frame, and the louvre has been seted up to the diapire of basin frame, and interior thermovent has been seted up to the lateral wall of centering support, and the louvre has been seted up down to the diapire of backshell, through louvre, interior thermovent down, go up the intercommunication in proper order of louvre and last thermovent, can make basin frame, centering support and backshell form the convection current, ensures that the speaker is under high-power mode of operation, and the heat of production is in time dredged, is discharged, avoids causing the speaker unusually because of the high temperature.

3. The utility model discloses a backshell that is formed by the three-layer wallboard is in the same place with the concatenation of the basin frame that is equipped with the strengthening rib, connects on the outer end of drum paper through the face frame, and seal ring connects on the face frame, is equipped with protruding strengthening rib through the face frame, and drum paper has seted up sunken strengthening rib, and protruding strengthening rib cooperatees with sunken strengthening rib, can further improve the fastening nature and the leakproofness of the shell of speaker, avoids the shell of speaker to take place to warp.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a combination diagram of an impedance convertible automobile speaker according to an embodiment of the present invention.

Fig. 2 is an exploded view of an impedance switchable car speaker according to an embodiment of the present invention.

Fig. 3 is a partial view of an impedance switchable car speaker according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1 and 2, an impedance convertible automobile speaker 10 includes a housing assembly 110, a sound emitting assembly 120, and an electrical assembly 130. The shell assembly 110 comprises a rear shell 111 and a basin stand 112, the basin stand 112 is connected to the rear shell 111, the interior of the basin stand 112 is communicated with the interior of the rear shell 111, and a heat dissipation channel is formed in the basin stand 112. The pronunciation component 120 comprises a T iron 121, a magnet 122, a washer 123, a voice coil 124 and a piece of drum paper 125, the T iron 121 is arranged in the rear shell 111, the magnet 122 and the washer 123 are both arranged on the T iron 121, the washer 123 is connected with the basin frame 112 through a bolt, a magnetic gap is formed between the washer 123 and the T iron 121, the voice coil 124 is arranged in the magnetic gap, and the inner end and the outer end of the drum paper 125 are respectively connected to the voice coil 124 and the basin frame 112; the voice coil 124 includes a bobbin 1241, a first winding group 1242 and a second winding group 1243, and the first winding group 1242 and the second winding group 1243 are wound outside the bobbin 1241. The electrical component 130 includes an impedance switch 131, the first winding set 1242 and the second winding set 1243 are connected through the impedance switch 131, and the impedance switch 131 is used to connect the first winding set 1242 and the second winding set 1243 in series or in parallel. It should be noted that, the utility model discloses a T iron 121 sets up in backshell 111, and the basin frame 112 inside communicates with backshell 111 inside, and basin frame 112 has seted up heat dissipation channel, makes the inside and outside circulation of air of speaker, guarantees its heat dispersion, prevents that the speaker from burning out because of the high temperature; an interaction magnetic field is formed by the T iron 121, the magnet 122, the washer 123 and the voice coil 124, and the drum paper 125 is driven to vibrate to make a sound; the connection of the first winding set 1242 and the second winding set 1243 is switched to be in series or in parallel by the impedance changeover switch 131, according to ohm's law: the series resistance is increased and the parallel resistance is decreased, so that the operating impedance of the voice coil 124 can be changed.

Specifically, the voice coil 124 further includes a lead wire, the first winding group 1242 and the second winding group 1243 are electrically connected through the lead wire, and the first winding group 1242 and the second winding group 1243 are electrically connected to both ends of the impedance changeover switch 131 through the lead wire. The impedance switch 131 is a multi-contact switch, also called a multi-gang switch, and is connected to the lead wires of the voice coil 124, and the connection mode between the first winding set 1242 and the second winding set 1243 is changed by changing the connection mode between the multi-contact points of the switch, so as to realize different impedance switching.

Further, the electrical assembly 130 further includes a terminal assembly 132 and a terminal cover 133, the terminal assembly 132 is used for electrically connecting a lead of the voice coil 124, and is provided with a positive terminal 1321 and a negative terminal 1322, the impedance switch 131 is provided with an impedance switch sliding key 1311, the terminal cover 133 is connected to the outer wall of the rear case 111, the terminal cover 133 covers the impedance switch 131 and the terminal assembly 132, the terminal cover 133 is provided with corresponding sliding grooves at the position of the impedance switch sliding key 1311, and is provided with corresponding mounting holes at the positions of the positive terminal 1321 and the negative terminal 1322, respectively. As such, the impedance-switching switch 131 and the terminal assembly 132 may be protected on the one hand, and the impedance-switching sliding key 1311, the positive terminal 1321, and the negative terminal 1322 may be exposed on the other hand to adjust the impedance and the external wiring.

In order to further improve the heat dissipation performance of the speaker, the heat dissipation channel includes upper heat dissipation holes 1121 and upper heat dissipation holes 1122, the upper heat dissipation holes 1121 are disposed on the bottom wall of the basin frame 112, and the upper heat dissipation holes 1122 are disposed on the side wall of the basin frame 112. Further, an inner heat dissipating opening 1262a is opened in a side wall of the centering bracket 1262, and the inner heat dissipating opening 1262a is communicated with the heat dissipating channel. Further, a lower heat dissipation hole 1111 is formed in the bottom wall of the rear housing 111, and the lower heat dissipation hole 1111 is communicated with the heat dissipation channel. Therefore, through the sequential communication of the lower heat dissipation hole 1111, the inner heat dissipation hole 1262a, the upper heat dissipation hole 1121 and the upper heat dissipation hole 1122, convection can be formed among the basin frame 112, the centering support 1262 and the rear shell 111, so that the generated heat is timely dredged and discharged in a high-power working mode of the loudspeaker, and the loudspeaker abnormality caused by overhigh temperature is avoided.

In order to further improve the fastening of the enclosure of the speaker, the frame 112 is further provided with a splicing port 1123, and the rear shell 111 is provided with a splicing convex portion 1112 matched with the splicing port 1123. Further, the rear case 111 is formed of three wall plates. Further, the side wall of the basin stand 112 is provided with a first reinforcing rib 1124. Therefore, the tightness of the shell of the loudspeaker can be further improved, and the shell of the loudspeaker is prevented from deforming.

In order to further improve the tightness and sealing performance of the enclosure of the speaker, referring to fig. 2 and 3, the enclosure assembly 110 further includes a bezel 113 and a sealing gasket 114, the bezel 113 is connected to the outer end of the drum paper 125, and the sealing gasket 114 is connected to the bezel 113. Further, the sealing washer 114 is provided with a clamping convex part 1141, the face frame 113 is provided with a clamping groove 1131, and the clamping convex part 1141 is matched with the clamping groove 1131; face frame 113 is equipped with protruding strengthening rib 1132, sunken strengthening rib 1251 has been seted up to drum paper 125, protruding strengthening rib 1132 with sunken strengthening rib 1251 cooperatees. This can further improve the tightness and sealing of the enclosure of the speaker.

Further, the housing assembly 110 further includes a dust cap 115, and the dust cap 115 is disposed on an inner end of the drum paper 125. Dust can be prevented from entering the magnetic gap by the dust cap 115 to affect the movement of the voice coil 124 and the drum paper 125.

Further, the sounding assembly 120 further includes a centering assembly 126, the centering assembly 126 includes a spring 1261, a centering bracket 1262 and a fixing washer 1263, the centering bracket 1262 is connected to the bottom wall of the basin frame 112 by a screw, the inner end and the outer end of the spring 1261 are respectively connected to the voice coil 124 and the centering bracket 1262, and the fixing washer 1263 is pressed against the outer end of the spring 1261. Further, the damper 1261 is disposed in a first annular groove of the centering bracket 1262, and the fixing washer 1263 is disposed in a second annular groove of the damper 1261. In this way, the centering bracket 1262 and the fixing washer 1263 can fix and position the damper 1261 well, so that the voice coil 124 and the drum paper 125 can keep correct connection and stable movement through the damper 1261, and the problem of position deviation during movement is avoided.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An impedance convertible automotive speaker comprising:

2. The impedance-convertible automobile speaker as claimed in claim 1, wherein a lower heat dissipation hole is formed in a bottom wall of the rear housing, and the lower heat dissipation hole is communicated with the heat dissipation channel.

3. The impedance-convertible automobile speaker as claimed in claim 1, wherein the heat dissipation channel comprises an upper heat dissipation hole and an upper heat dissipation port, the upper heat dissipation hole is disposed on the bottom wall of the frame, and the upper heat dissipation port is disposed on the sidewall of the frame.

4. The impedance-convertible automobile speaker as claimed in claim 1, wherein first ribs are provided in the side walls of the tub.

5. The impedance convertible automobile speaker of claim 1 wherein said housing assembly further comprises a bezel attached to an outer end of said drum paper and a sealing gasket attached to said bezel.

6. The impedance-convertible automobile loudspeaker according to claim 5, wherein the sealing washer is provided with a clamping convex part, the face frame is provided with a clamping groove, and the clamping convex part is matched with the clamping groove; the face frame is provided with protruding reinforcing ribs, the drum paper is provided with sunken reinforcing ribs, and the protruding reinforcing ribs are matched with the sunken reinforcing ribs.

7. The impedance convertible automobile speaker of claim 1 wherein said housing assembly further comprises a dust cap, said dust cap being disposed on an inner end of said drum paper.

8. The impedance-convertible automobile speaker as recited in claim 1, wherein said voice coil further comprises a bobbin, and said first winding set and said second winding set are wound around said bobbin.

9. The impedance-convertible automobile speaker according to claim 1, wherein the sounding assembly further comprises a centering assembly, the centering assembly comprises a damper, a centering bracket and a fixing washer, the centering bracket is connected to the bottom wall of the basin frame, the inner end and the outer end of the damper are respectively connected to the voice coil and the centering bracket, and the fixing washer is pressed against the outer end of the damper.

10. The impedance-convertible automobile speaker as claimed in claim 9, wherein the side wall of the centering bracket is formed with an inner heat-dissipating opening, and the inner heat-dissipating opening is communicated with the heat-dissipating channel.