CN110602612A

CN110602612A - Automobile loudspeaker long in service life

Info

Publication number: CN110602612A
Application number: CN201911013840.0A
Authority: CN
Inventors: 洪叶
Original assignee: Wuhan Haomengyuan Mechanical Equipment Manufacturing Co Ltd
Current assignee: Ningbo Baister Electroacoustic Co.,Ltd.
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2019-12-20
Anticipated expiration: 2039-10-23
Also published as: CN110602612B

Abstract

The invention provides an automobile loudspeaker with long service life, which comprises a loudspeaker shell, a vibrating diaphragm, a resonance sheet, a movable iron core, a magnetic coil, a fixed iron core pipe, a vibrating sheet and a contact conductive mechanism, wherein the contact conductive mechanism comprises a contact mechanism and a positioning dehumidification mechanism, the vibrating diaphragm is fixedly connected to the inner wall of the loudspeaker shell, and the surface of the resonance sheet is fixedly connected with the surface of the vibrating diaphragm. This long service life's automotive speaker changes traditional contact electricity mode through carrying out special improvement to the contact structure to effectual general speaker contact simple structure of having solved, the contact point is single unchangeable, and long-time high frequency uses loudspeaker to burn or wear and tear because of electrocuting at the contact position easily, influences the problem of the normal use of speaker, has improved life.

Description

Automobile loudspeaker long in service life

Technical Field

The invention relates to the technical field of loudspeakers, in particular to an automobile loudspeaker with long service life.

Background

The automobile loudspeaker is also called as an automobile horn, the automobile horn is mainly divided into an air horn and an electric horn, and at present, in the using process of the electric horn, an electromagnetic coil is mainly used for enabling a metal diaphragm to vibrate to generate sound. However, the service life of the existing electric horn is short, and the reason for the short service life is mainly two points: firstly, because horn contact ablation is easy to cause to generate impedance when a horn is pressed for a long time, the current flowing through the electromagnetic coil is weakened, the electromagnetic attraction is reduced, and the armature cannot be attracted to drive the diaphragm to normally vibrate, so that the sounding is dull and even does not sound; secondly, after the device is used for a period of time, the contact is easy to wear, the contact of the contact is poor, and the time spent is not loud.

At present, for solving above-mentioned two problems, generally adopt to change the contact or directly dismantle the speaker and carry out the contact and polish, resume the effect of contact, however no matter change the device or polish the contact and all need comparatively trouble, destroy the leakproofness easily, cause the follow-up condition that often loses efficacy of speaker, general speaker contact simple structure, the contact point is single unchangeable, long-time high frequency uses loudspeaker easily because of electrocuting burning or wearing and tearing at the contact position, influence the normal use of speaker, so need a long service life's automotive speaker.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an automobile loudspeaker with long service life, which solves the problems that the contact point of a common loudspeaker is simple in structure, the contact point is single and unchanged, and the normal use of the loudspeaker is influenced by electric shock burning or abrasion at the contact point contact part due to long-time high-frequency use of a loudspeaker.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a long-service-life automobile loudspeaker comprises a loudspeaker shell and a vibrating diaphragm, wherein the vibrating diaphragm is arranged on the inner wall of the loudspeaker shell, a resonance sheet is arranged on the surface of the vibrating diaphragm, a movable iron core penetrates through the resonance sheet and the vibrating diaphragm, a vibrating sheet is sleeved on the lower portion of the movable iron core, the surface of the vibrating sheet is fixedly connected with the lower surface of the vibrating diaphragm, a fixed iron core pipe is fixedly connected to the inner wall of the loudspeaker shell, the lower end of the movable iron core extends into the fixed iron core pipe, a magnetic coil is bound on the surface of the fixed iron core pipe, a contact mechanism is arranged in the loudspeaker shell and comprises a top plate and a movable plate, one ends, far away from the movable iron core, of the top plate and the movable plate are arranged on the loudspeaker shell through connecting bolts, an upper-end contact block with an arc groove is arranged, flexible groove has been seted up to the inner wall in circular arc groove, the inner wall fixedly connected with conductive spring in flexible groove, the conductive spring lower extreme is connected with electrically conductive slider, electrically conductive slider's fixed surface is connected with the arc touch panel, install the lower extreme touch multitouch that the groove was switched in the area on the fly leaf, the inner wall sliding connection who switches the groove has the activity with arc touch panel matched with to touch the core, the surface of upper end touch multitouch and the surface of lower extreme touch multitouch all are right trapezoid shape, the contact surface of upper end touch multitouch and lower extreme touch multitouch all is the slope form. The friction pad, the movable touch core and the arc touch plate are arranged to ensure that the structure of the contact position always has a bright and clean contact surface, so that the influence of contact impedance on the normal use of the loudspeaker is avoided, and the service life is prolonged; meanwhile, the movable contact core and the arc-shaped contact plate with the elastic structure can resist consumption, and the position of the contact surface of the contact can be continuously switched in the friction process, so that the service life is prolonged; in addition, the surface of the upper end contact block and the surface of the lower end contact block are designed to be in a right-angled trapezoid shape, and the contact surfaces of the upper end contact block and the lower end contact block are inclined, so that the contact surfaces of the upper end contact block and the lower end contact block can be increased to improve the wear resistance, impurities on an inclined surface can conveniently fall off, and the service life is prolonged; finally, the friction pad can be deformed after being extruded by the movable contact core, and then negative pressure can be generated, so that caking caused by contact corrosion and electric shock burning can be timely cleaned, loudspeaker failure is avoided, and the service life is prolonged.

Preferably, the roof is kept away from movable core's one end with the fly leaf is kept away from be provided with insulating pad between movable core's the one end, set up insulating pad in order to avoid the circuit to be in the on-state all the time, the fly leaf is close to movable core's one end with the roof is close to movable core's one end interval arrangement, the fly leaf is close to movable core's one end with movable core contacts, the roof with the material of fly leaf includes metallic iron.

Preferably, the bottom of the friction pad is inclined. The bottom of the friction pad is inclined, so that the movable contact core is driven to rotate by contacting with the eccentric position of the movable contact core, and the inner friction convex strip is in an irregular curve shape, so that the friction force is increased.

Preferably, the inner wall of the friction pad is provided with a friction raised line, and the friction raised line is in a curve shape. The friction raised line is arranged to enable the friction raised line to rub with the movable contact core, so that the contact corrosion and the caking generated by electric shock burning can be timely cleaned, the horn failure can be avoided, and the service life can be prolonged.

Preferably, the surface of the conductive sliding block is fixedly connected with a limiting block, the inner wall of the telescopic groove is provided with a limiting groove, and the surface of the limiting block is connected with the inner wall of the limiting groove in a sliding mode.

Preferably, the surface of the movable contact core is spherical, the diameter of the movable contact core is larger than the diameter of the bottom of the friction pad, and the diameter of the movable contact core is smaller than the diameter of the arc groove.

Preferably, the surface of roof and the surface of fly leaf all are connected with the wire, with the one end of the wire that the roof is connected extends to the outside of speaker casing and is connected with the switch electrically, with the one end and the magnetic coil electricity of the wire that the fly leaf is connected are connected, the output electricity of magnetic coil is connected with ground wire, the material of arc touch panel, activity touch core, upper end touch multitouch and lower extreme touch multitouch all includes metallic iron.

Preferably, the bottom of the loudspeaker shell is provided with a sealing plate, the surface of the sealing plate is in threaded connection with a fixing bolt, and the surface of the sealing plate is fixedly connected with the surface of the loudspeaker shell through the fixing bolt. The sealing plate is provided to facilitate mounting of the speaker on the vehicle.

Preferably, the inner wall of the switching groove is provided with a ball, the surface of the movable contact core is in sliding connection with the surface of the ball, and the material of the ball comprises metallic iron. The balls are provided to facilitate the rotation of the movable contact core.

Advantageous effects

(1) The invention has the advantages that the contact mechanism is arranged, the existing simple contact structure is specially improved, the contact surface is continuously switched when the power supply is switched on and switched off, the condition that the loudspeaker fails once the contact impedance occurs due to single point contact is avoided, the structure at the contact position always works in the processes of local negative pressure (the friction pad can deform after being extruded by the movable contact core and further can generate negative pressure) and local friction when the contact surface is switched, the contact corrosion and the caking caused by electric shock burning can be timely cleaned, and the service life is prolonged.

(2) According to the invention, the arc-shaped touch plate and the movable touch core which are of elastic structures are movably connected, the arc-shaped touch plate has a telescopic function, friction consumption exists between the movable touch core and the arc-shaped touch plate, but the consumption can be eliminated through the spring, so that the contact impedance is offset, and the service life is prolonged; the large-area contact between the upper contact block and the lower contact block can further reduce abrasion, so that the service life of the electric horn is further prolonged; and moreover, the design of the inclined planes of the upper contact block and the lower contact block is convenient for impurities on the inclined planes to fall.

(3) The invention changes the traditional contact connection mode by specially improving the contact structure, thereby effectively solving the problems that the common loudspeaker contact has simple structure, the contact is single and unchanged, and the normal use of the loudspeaker is influenced by electric shock burning or abrasion at the contact part of the contact when the loudspeaker is used at high frequency for a long time, and prolonging the service life.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of a speaker housing according to the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 2;

FIG. 4 is a cross-sectional view of a circular arc groove structure of the present invention;

FIG. 5 is a side view of a lower contact block structure of the present invention;

FIG. 6 is a front view of the friction pad structure of the present invention.

The loudspeaker comprises a loudspeaker shell 1, a vibrating diaphragm 2, a resonance piece 3, a movable iron core 4, a magnetic coil 5, a fixed iron core tube 6, a vibrating piece 7, a contact point conducting mechanism 8, a contact point contacting mechanism 81, a top plate 811, a movable plate 812, a contact point at the upper end 813, a contact point at the lower end 814, an arc-shaped contact plate 815, a friction pad 816, a movable contact core 817, a connecting bolt 818, an arc-shaped groove 819, a friction convex strip 8110, a telescopic groove 8111, a conductive spring 8112, a conductive sliding block 8113, a switching groove 8114, an 8115 switch, a positioning dehumidifying mechanism 82, an enclosing air bag 821, a guide air inlet pipe 822, a guide air outlet pipe 823, a dehumidifying spring 824, a one-way air guide valve 825, a tabletting 826 tabletting, an 827 dehumidifying net, dehumidification cotton 828.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention, and it is obvious 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 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 6, an embodiment of the present invention provides an automotive speaker with a long service life, which includes a speaker housing 1, a diaphragm 2, a resonator plate 3, a movable iron core 4, a magnetic coil 5, a fixed iron core tube 6, a diaphragm 7, and a contact conducting mechanism 8, wherein the contact conducting mechanism 8 includes a contact contacting mechanism 81 and a positioning dehumidifying mechanism 82. Vibrating diaphragm 2 fixed connection is on loudspeaker housing 1's inner wall, the fixed surface of the surface of sympathetic response piece 3 and vibrating diaphragm 2 is connected, sympathetic response piece 3 and vibrating diaphragm 2 are run through to activity iron core 4, the fixed surface of activity iron core 4 and trembler 7 is connected, trembler 7's surface and vibrating diaphragm 2's lower fixed surface are connected, the fixed iron core tube 6's surface and loudspeaker housing 1's inner wall fixed connection, the one end of activity iron core 4 extends to the inside of fixed iron core tube 6, the surface bonding of fixed iron core tube 6 has magnetic coil 5, contact conductive mechanism 8 fixed mounting is on loudspeaker housing 1, loudspeaker housing 1's bottom is provided with shrouding 9, the surface threaded connection of shrouding 9 has fixing bolt 10, the surface of shrouding 9 passes through fixing bolt 10 and loudspeaker housing 1's fixed surface to be connected.

The contact mechanism 81 comprises a top plate 811, a movable plate 812, an upper end contact block 813, a lower end contact block 814, an arc-shaped contact plate 815, a friction pad 816 and a movable contact core 817, wherein a connecting bolt 818 is connected to the surface of the top plate 811 in a threaded manner, the surface of the movable plate 812 is connected to the surface of the connecting bolt 818 in a threaded manner, the surface of the connecting bolt 818 is connected to the surface of the speaker housing 1 in a threaded manner, the top plate 811 and the movable plate 812 are made of metal iron, an arc groove 819 is formed in the surface of the upper end contact block 813, the friction pad 816 is fixedly connected to the inner wall of the arc groove 819, the bottom of the friction pad 816 is inclined, a friction raised line 8110 is arranged on the inner wall of the friction pad 816, the friction raised line 8110 is curved, an expansion groove 8111 is formed in the inner wall of the arc 819, a conductive spring 8112 is fixedly connected to the inner wall of the expansion groove 8111, one end of the, the surface of the conductive sliding block 8113 is fixedly connected with a limiting block, the inner wall of the telescopic slot 8111 is provided with a limiting groove, the surface of the limiting block is connected with the inner wall of the limiting groove in a sliding manner, the surface of the lower end contact block 814 is provided with a switching slot 8114, the inner wall of the switching slot 8114 is connected with a movable contact core 817 in a sliding manner, the surface of the movable contact core 817 is in a circular shape, the diameter of the movable contact core 817 is larger than that of the bottom of the friction pad 816, the diameter of the movable contact core 817 is smaller than that of the arc slot 819, the inner wall of the switching slot 8114 is provided with a ball, the surface of the movable contact core 817 is connected with the surface of the ball in a sliding manner, the ball is made of metal iron, the surface of the top plate 811 and the surface of the movable plate 812 are both electrically connected with leads, one end of the lead connected with the top plate 811 extends to the outside of the loudspeaker housing 1 and, the surface of the upper end contact block 813 and the surface of the lower end contact block 814 are both in a right-angle ladder shape, the contact surfaces of the upper end contact block 813 and the lower end contact block 814 are both in an inclined shape, and the arc-shaped contact plate 815, the movable contact core 817, the upper end contact block 813 and the lower end contact block 814 are made of metal iron. One end that activity iron core 4 was kept away from to roof 811 and activity board 812 keep away from be provided with insulating pad between the one end of activity iron core 4, set up insulating pad in order to avoid the circuit to be in the on-state all the time, the one end that activity iron core 4 is close to activity board 812 with the one end interval arrangement that roof 811 is close to activity iron core 4, the one end that activity iron core 4 is close to activity board 812 and activity iron core 4 contact.

The positioning dehumidifying mechanism 82 comprises an enclosing air bag 821, a guide air inlet pipe 822, a guide air outlet pipe 823 and a dehumidifying spring 824, an upper end contact block 813 and a lower end contact block 814 are located in the enclosing air bag 821, the guide air inlet pipe 822 and the guide air outlet pipe 823 are fixedly connected on the enclosing air bag 821, a one-way air guide valve 825 is fixedly installed on the inner wall of the guide air inlet pipe 822 and the inner wall of the guide air outlet pipe 823, one end of the dehumidifying spring 824 is fixedly connected with the surface of a top plate 811, the other end of the dehumidifying spring 824 is fixedly connected with the surface of a movable plate 812, the dehumidifying spring 824 is close to the guide air inlet pipe 822, a plurality of pressing sheets 826 are fixedly connected with the surface of the dehumidifying spring 824, a plurality of dehumidifying nets 827 are fixedly connected with the surface of the dehumidifying springs 824, dehumidifying cotton 828 is fixedly connected with the inner wall of the.

When the vibrating diaphragm is used, a power supply is connected, the switch 8115 is pressed, a circuit is connected through each conducting wire, the top plate 811, the upper end contact block 813, the conducting slide block 8113, the arc-shaped contact plate 815, the movable contact core 817, the ball, the lower end contact block 814, the movable plate 812 and the magnetic coil 5, the fixed iron core pipe 6 generates strong magnetism, the movable iron core 4 is attracted downwards by magnetism, the movable iron core 4 drives the movable plate 812 to move downwards in the downward process to enable the upper end contact block 813 and the lower end contact block 814 to be separated, the movable contact core 817 slides out of the arc-shaped groove 819 to be separated from the arc-shaped contact plate 815, the circuit is disconnected, the movable iron core 4 is reset under the elastic action of the vibrating diaphragm 2, then the movable plate 812 raises and is connected with the reset circuit again, the vibrating diaphragm 2 vibrates continuously in such a way, sound is generated, when the movable contact core 817 rises each time and contacts with the arc-shaped contact plate, therefore, the movable contact core 817 can continuously rotate to switch the contact surface with the arc-shaped contact plate 815 in the process of bouncing up, and the movable contact core 817 is rubbed by the friction raised line 8110 on the friction pad 816 in each bouncing up and falling process of the movable contact core 817, so that the movable contact core 817 can always keep bright, contact impedance is avoided, if in a humid environment, the surrounding air bag 821 can be driven to stretch and contract in the process of lifting up the movable contact core 812, the air flow is blown to the dehumidifying net 827 and the dehumidifying cotton 828 close to the guiding air inlet pipe 822 through the guiding air inlet pipe 822 when the surrounding air bag 821 is pulled up, the dehumidifying net 827 and the dehumidifying cotton 828 generate adsorption force to absorb moisture in the air flow when the surrounding air bag 821 is squeezed, the air flow is discharged through the guiding air outlet pipe 823 in a single-term, and meanwhile, the dehumidifying net 827 and the dehumidifying cotton 828 are squeezed and compressed by the dehumidifying springs 824 and the pressing sheets 826.

Claims

1. The utility model provides a long service life's automotive speaker, includes speaker shell (1) and vibrating diaphragm (2), install on speaker shell (1) inner wall vibrating diaphragm (2), the surface mounting of vibrating diaphragm (2) has sympathetic response piece (3), and sympathetic response piece (3) and vibrating diaphragm (2) are run through in activity iron core (4), and activity iron core (4) lower part cover is equipped with trembler (7), the surface of trembler (7) is connected with the lower fixed surface of vibrating diaphragm (2), the inner wall of speaker shell (1) is fixed iron core pipe (6) of fixedly connected with still, activity iron core (4) lower extreme extends to the inside of fixed iron core pipe (6), fixed iron core pipe (6) surface stitching has magnetic coil (5), its characterized in that: the loudspeaker is characterized in that a contact mechanism (81) is arranged in the loudspeaker shell (1), the contact mechanism (81) comprises a top plate (811) and a movable plate (812), one end, far away from the movable iron core (4), of the top plate (811) and the movable plate (812) is installed on the loudspeaker shell (1) through a connecting bolt (818), an upper end contact block (813) with an arc groove (819) is installed on the top plate (811), a friction pad (816) is installed on the inner wall of the arc groove (819), a telescopic groove (8111) is formed in the inner wall of the arc groove (819), a conductive spring (8112) is fixedly connected to the inner wall of the telescopic groove (8111), a conductive sliding block (8113) is connected to the lower end of the conductive spring (8112), an arc contact plate (815) is fixedly connected to the surface of the conductive sliding block (8113), and a lower end contact block (814) with a switching groove (8114, the inner wall sliding connection of switching groove (8114) has with arc touch panel (815) matched with activity touch core (817), the surface of upper end touch multitouch (813) and the surface of lower extreme touch multitouch (814) all are right angle ladder shape, the contact surface of upper end touch multitouch (813) and lower extreme touch multitouch (814) all is the slope form.

2. A long-life automotive speaker as claimed in claim 1, wherein: roof (811) are kept away from the one end of activity iron core (4) with activity board (812) are kept away from be provided with insulating pad between the one end of activity iron core (4), activity board (812) are close to the one end of activity iron core (4) with roof (811) are close to the one end interval arrangement of activity iron core (4), activity board (812) are close to the one end of activity iron core (4) with activity iron core (4) contact, roof (811) with the material of activity board (812) includes metallic iron.

3. A long-life automotive speaker as claimed in claim 1, wherein: the bottom of the friction pad (816) is inclined.

4. A long-life automotive speaker as claimed in claim 1, wherein: the inner wall of the friction pad (816) is provided with a friction raised line (8110), and the friction raised line (8110) is in a curve shape.

5. A long-life automotive speaker as claimed in claim 1, wherein: the surface fixed connection of electrically conductive slider (8113) has the stopper, the spacing groove has been seted up to the inner wall in flexible groove (8111), the surface of stopper and the inner wall sliding connection in spacing groove.

6. A long-life automotive speaker as claimed in claim 1, wherein: the surface of the movable contact core (817) is spherical, the diameter of the movable contact core (817) is larger than the diameter of the bottom of the friction pad (816), and the diameter of the movable contact core (817) is smaller than the diameter of the arc groove (819).

7. A long-life automotive speaker as claimed in claim 1, wherein: the surface of roof (811) and the surface of activity board (812) all are connected with the wire, with the one end of the wire that roof (811) are connected extends to the outside of speaker casing (1) and is connected with switch (8115) electrically, with the one end and the magnetic coil (5) electricity of the wire that activity board (812) are connected, the output electricity of magnetic coil (5) is connected with earth conductor, the material of arc touch panel (815), activity touch core (817), upper end touch multitouch (813) and lower extreme touch multitouch (814) all includes metallic iron.

8. A long-life automotive speaker as claimed in claim 1, wherein: the bottom of speaker casing (1) is provided with shrouding (9), the surperficial threaded connection of shrouding (9) has fixing bolt, the fixed surface of shrouding (9) is passed through fixing bolt and is connected with the fixed surface of speaker casing (1).

9. A long-life automotive speaker as claimed in claim 1, wherein: the inner wall of the switching groove (8114) is provided with a ball, the surface of the movable contact core (817) is in sliding connection with the surface of the ball, and the material of the ball comprises metal iron.