JPH09163493A - Speaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the waterproof performance by providing a wall part higher than a damper fixed to a frame to an outer circumference of the damper so as to prevent infiltration of water drops into a gap. SOLUTION: A damper 12 is made tip of a riser 12a fixed to an upper plate 6b, a corrugated part 12b whose inner circumferential end is adhered to a voice coil 9, and a wall 12c provided integrally with an outer circumference of the riser 12a and whose height is selected higher than that of the corrugated part 12b. Water drops depositted to the upper part of a frame 8 are blocked by the wall 12c whose height is selected higher than the height of the corrugated part 12b thereby preventing the drops from being dropped directly onto the damper 12. Since the riser 12a of the damper 12 is extended and the wall 12c is provided integrally with the outer circumference of the wall, the waterproof performance is improved without causing increased number of components and increased assembling man-hours of the speaker.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker used for various kinds of audio equipment, and more particularly to a speaker used as a vehicle-mounted door mount speaker.

[0002]

2. Description of the Related Art A conventional technique will be described with reference to FIGS. First, referring to FIG. 1, 1 is a speaker body, 2 is a waterproof cover for covering the speaker body 1, 3 is a door inner panel having a speaker mounting hole 3a, and the speaker body 1 and the waterproof cover 2 are speaker mounting holes 3a. And is attached to the door inner panel 3 with the attaching screw 4.

In the speaker body 1, a lower plate 6a having a center pole and a lower plate portion 6a form a magnetic gap 5, and an upper plate 6b for sandwiching a ring-shaped magnet 6c with the lower plate 6a.
And a cylindrical voice coil portion 9 whose lower end is inserted into the magnetic gap 5 of the magnetic circuit portion 6.
And a back opening hole 8a fixed to the upper plate 6b.
And the outer periphery of the voice coil portion 9 is bonded to the inner periphery of the frame 8 through the edge.
The vibration plate 7 bonded to the upper plate 6b, the rising portion 10a fixed to the upper plate 6b, and the inner peripheral end portion of the voice coil portion 9 are
A corrugation portion 10b adhered to the above, and a damper 10 that supports the voice coil portion 9 described above.

[0004]

However, in the above structure, a certain degree of opening is required on the back surface of the speaker body 1 in terms of acoustic performance, and therefore the speaker body 1 must be completely covered with the waterproof cover 2. However, there is a possibility that the water droplets adhering to the upper portion of the frame 8 may enter through the rear surface opening hole 8a of the frame 8 and enter the magnetic gap 5 through the damper 10 to break the voice coil portion 9.

It is an object of the present invention to solve the above problems and provide a speaker having improved waterproof performance.

[0006]

In order to solve the above problems, the speaker of the present invention is provided with a wall portion higher than the damper on the outer periphery of the damper fixed to the frame.

With the above structure, the water droplets adhering to the frame are blocked by the walls and do not reach the damper, so that the water droplets can be prevented from entering the gap.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A speaker according to claim 1 of the present invention comprises a magnetic circuit portion having a magnetic gap, a voice coil portion partially inserted in the magnetic gap, and an outer periphery of the voice coil portion. Since the damper that is coupled to the frame and fixed to the frame and the wall that is higher than this damper are provided on the outer circumference of this damper, the water droplets adhering to the frame are blocked by the wall and do not reach the damper. It is possible to provide a speaker with improved waterproof performance, which can prevent intrusion into the magnetic gap.

According to a second aspect of the present invention, in addition to the structure of the first aspect, the damper is formed by a rising portion fixed to the frame and a corrugation portion connected to the voice coil portion, and the wall portion is formed by the corrugation. Since it is configured with a higher setting than that of the parts, the waterproof performance can be improved even in a speaker having a rising part in the damper.

According to the invention of claim 3, in addition to the structure of claim 1 or claim 2, a wall portion is provided integrally with the damper, so that waterproofing is achieved without increasing the number of parts and the number of working steps. It is possible to provide a speaker with excellent performance.

An embodiment of the speaker of the present invention will be described below with reference to FIG. In the description, the same parts as those in the related art are denoted by the same reference numerals, and description will be omitted.

FIG. 1 is a side sectional view, and according to FIG.
Reference numeral 2 denotes a damper, which includes a rising portion 12a fixed to the upper plate 6b, a corrugation portion 12b having an inner peripheral end portion bonded to the voice coil portion 9, and the rising portion 12 described above.
The corrugation portion 12b is integrally provided on the outer periphery of a.
It is formed from the wall portion 12c set higher.

Therefore, by the wall portion 12c which is set higher than the corrugation portion 12b, the water droplets attached to the upper portion of the frame 8 are blocked by the wall portion and the damper 12 is directly attached.
It is possible to prevent it from falling to the outside and improve the waterproof performance.

Further, in the above embodiment, since the wall portion 12c is made higher than the corrugation portion 12b, the waterproof performance can be improved also in the damper 12 having the rising portion 12a.

Further, in the above-described embodiment, since the rising portion 12a of the damper 12 is extended and the wall portion 12c is integrally provided on the outer periphery thereof, the waterproof performance is increased without increasing the number of parts and the number of speaker assembling steps. Can be improved.

The wall portion 12c does not need to be provided all around the outer periphery of the damper 12, and the rear surface opening hole 8 of the frame 8 is not necessary.
It is also possible to limit the range in which the water droplets attached to the upper side of a fall onto the damper 12.

[0017]

As described above, since the speaker of the present invention has the structure in which the wall portion higher than the damper is provided on the outer periphery of the damper, the water droplets adhering to the frame are blocked by the wall portion and do not reach the damper. In addition, it is possible to provide a speaker that can prevent water droplets from entering the magnetic gap and that has excellent waterproof performance.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a speaker according to an embodiment of the present invention.

FIG. 2 is a side sectional view illustrating a state where a conventional speaker is attached to a door inner panel.

FIG. 3 is a side sectional view of the conventional speaker.

[Explanation of symbols]

 1 Speaker Main Body 5 Magnetic Gap 6 Magnetic Circuit Section 8 Frame 9 Voice Coil Section 12 Damper 12a Rise Section 12b Corrugation Section 12c Wall Section

Claims (3)

[Claims] 1. A magnetic circuit part having a magnetic gap, and a voice coil part partially inserted in the magnetic gap,
A speaker provided with a damper which is coupled to the outer circumference of the voice coil section and fixed to the frame, and a wall section which is higher than the damper on the outer circumference of the damper. 2. The speaker according to claim 1, wherein the damper comprises a rising portion fixed to the frame and a corrugation portion connected to the voice coil portion, and the wall portion is set higher than the corrugation portion. 3. The wall portion is provided integrally with the damper.
Alternatively, the speaker according to claim 2.