JPH0210720Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a support structure for a speaker damper used to properly hold a voice coil within a magnetic gap of a magnetic circuit.

Figure 1 is a half-cut sectional view showing a 2-way coaxial type speaker to which a conventional speaker damper support structure is applied. In the figure, A is the magnetic circuit of the low-temperature speaker;
1. The voice coil B, which consists of a yoke A2 and a plate A3, and is placed inside the magnetic gap, has a
The center of the bass diaphragm C is fixed. A damper E is attached between this fixed portion and the frame D to properly hold the voice coil B within the magnetic gap. Also, bass diaphragm C
An edge F is attached between the outer peripheral end of the frame D and the frame D. G is a spacer attached by a screw H to the center of the center pole of the yoke A2 constituting the magnetic circuit A, and the magnetic circuit I of the midrange speaker is attached to the upper end of the spacer G by a screw H.
Fixed by A damper J is attached between the outer periphery of the spacer G and the bass diaphragm C, which also has a dustproof function. Here, the magnetic circuit I described above is composed of a magnet I1, a yoke I2, and a plate I3, and a voice coil K disposed within the magnetic gap has the center portion of a midrange diaphragm L fixed thereto. A damper N is attached between this fixed portion and the frame M, and the outer peripheral portion of the midrange diaphragm L is connected to the frame M via an edge O. In the above conventional damper support structure, the outer peripheries of the dampers E and N and the frames D and M
Since adhesive is used to secure the spacer G and the inner periphery of the damper J, which has a dust-proofing effect, the amount of adhesive varies and the adhesive area is not sufficient. The problem was that the fixing strength was low and the quality was unstable, such as peeling due to various reasons.

In addition, a plurality of notches are provided on the inner periphery of the frame at desired intervals, and these parts are bent to form claws, and the damper and yoke plate are formed by the claws and the inner periphery of the frame. There was a support structure that sandwiched the outer circumferential surface (for example,
−24625, etc.). However, according to this prior art, the main purpose is to hold the frame and the yoke plate, and since the damper is only partially held by the claws, chamfering may occur. Therefore, in order to prevent this chattering, further adhesive fixing is required, which poses a problem in that the number of processing steps increases.

Therefore, the present invention aims to solve the above-mentioned drawbacks, and provides a damper for a speaker in which the outer peripheral part of the damper is clamped and fixed between a magnetic circuit and a support member for the magnetic circuit. In the support structure, a stepped portion is formed on the upper surface of the outer peripheral part of the plate that constitutes the magnetic circuit, and warts are provided on the upper surface to protrude at predetermined intervals along the circumferential direction, and warts are formed inwardly from the bottom of the support member. A hole into which the wart is inserted is formed in the flange portion connected in the direction, and a hole into which the wart is inserted is formed at a position corresponding to the wart, and a hole into which the wart is inserted is formed in the outer periphery of the damper. It is an object of the present invention to provide a support structure for a speaker damper, which has strong fixing strength, stably maintains quality, and can reduce assembly man-hours by clamping and fixing a crossing damper.

The present invention will be explained below based on the embodiments shown in the drawings. Figure 2 is a half-cut sectional view of a 2-way coaxial type speaker to which the damper support structure of the present invention is applied, and A and B in Figure 3 are the same speakers. FIG. 4 is a cross-sectional view showing other important parts of the speaker.

In the above drawings, reference numeral 1 denotes a magnetic circuit of a bass speaker, and the magnetic circuit 1 is composed of a magnet 2, a yoke 3, and a plate 4. and,
As shown in FIGS. 3A and 3B, the outer circumferential upper surface 4a of the plate 4 is formed higher than the inner circumferential upper surface 4b so that the damper 8, which will be described later, does not come into contact with it. Warts 5 are protruded at predetermined intervals along the circumferential direction.

Reference numeral 6 denotes a frame that supports the magnetic circuit 1 of the bass speaker, that is, a support member (frame), as shown in FIG.
A hole 7 into which the wart 5 is inserted is formed at a position corresponding to the wart 5 in the flange portion 6a connected inward from the bottom of the damper 8.
A hole 9 into which the wart 5 is inserted is also formed in the outer peripheral portion 8a of the wart. Reference numeral 10 denotes a voice coil disposed within the magnetic gap of the magnetic circuit 1. The center portion of a bass diaphragm 11 is fixed to the voice coil 10, and the outer peripheral end of the bass diaphragm 11 is fixed to the voice coil 10.
It is connected to a support member (frame) 6 via 2.

Here, when assembling the above bass speaker,
After fixing the voice coil 10 to the inner circumference of the damper 8, as shown in FIG. 5, and further insert the outer peripheral part 8a.
The flange portion 6a of the support member (frame) 6 is placed on top. Then, by hitting and caulking the upper surface of the wart 5 protruding from the hole 7 of the flange portion 6a with the caulking tool 13, the support member (frame) 6 is fixed to the magnetic circuit 1, and the damper is secured by the plate 4 and the flange portion 6a. The outer circumferential portion 8a of 8 is clamped and fixed over the entire circumferential surface. 14 is fixed to the center of the center pole of the yoke 3 constituting the magnetic circuit 1 with a screw 15, and the magnetic circuit 16 of the midrange speaker is fixed to the upper end thereof with the screw 15.
This is a spacer that is supported and fixed by the magnetic circuit 16, that is, a support member (spacer) for the magnetic circuit 16. and,
A damper 17 for dustproofing is attached between this support member (spacer) 14 and the bass diaphragm 11. 4, the inner peripheral part 17a of the damper 17 is placed on the outer periphery of the upper surface of the support member (spacer) 14, and the magnetic circuit 16 of the mid-range speaker is placed on the inner peripheral part 17a. If the magnetic circuit 16 is fixed to the upper end of the support member (spacer) 14 with the screw 15, the outer circumferential portion 17a of the damper 17 is clamped and fixed by the support member (spacer) 14 and the magnetic circuit 16. .

Here, the above magnetic circuit 16 is connected to the magnet 1
8, composed of a yoke 19 and a plate 20,
Voice coil 21 located within the magnetic gap
The center portion of the midrange diaphragm 22 is fixed to the diaphragm 22 .

A damper 24 is attached between this fixed portion and a frame for medium sounds, that is, a support member (frame) 23. The fixing structure between the outer periphery of the damper 24 and the support member (frame) 23 is as follows:
This is similar to the case of the bass speaker described above. 2
Reference numeral 5 denotes an edge that connects the outer peripheral end of the medium-tone diaphragm 22 to the support member (frame) 23.

It goes without saying that the damper support structure of the present invention can be applied not only to cone-shaped speakers but also to dome-shaped speakers.

As described above, the present invention provides a support structure for a speaker damper in which the outer peripheral part of the damper is clamped and fixed between a magnetic circuit and a support member for the magnetic circuit. A stepped portion is formed on the upper surface 4a of the outer peripheral part of the plate 4 constituting the plate 4, and warts 5 are provided protruding from the upper surface 4a at predetermined intervals along the circumferential direction. There is a wart 5 on the flange portion 6a connected to the
A hole 7 into which the wart 5 is inserted is formed at a position corresponding to the hole 7, into which the wart 5 is inserted, and a hole 9 into which the wart 5 is inserted is formed in the outer periphery 8a of the damper 8, 17, 24. Since the damper is clamped and fixed, no adhesive is required, reducing costs and assembly man-hours, and since the damper is clamped and fixed mechanically, the fixing strength is increased and quality can be stabilized.

In addition, the magnetic circuits 1 and 16 and the support member (frame)
6, 23, or the damper 8, 17, at the same time as the support member (spacer) 14 and magnetic circuit 16 are assembled.
24 can be clamped and fixed, reducing assembly time. Further, the outer circumferential portion 8a and the inner circumferential portion 17a of the dampers 8, 17, 24 are provided between the magnetic circuits 1, 16 and the supporting members (frames) 6, 23, and between the supporting member (spacer) 14 and the magnetic circuit 16. Since there is an intervention, this becomes packing and both parties are 1,
16 and 6, 23, 14 and 16 are firmly connected,
Chattering of the support members (frames) 6 and 23 can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a half-cut sectional view of a co-axial type speaker to which a conventional damper support structure is applied, FIG. 2 is a half-cut sectional view of a co-axial type speaker to which the damper support structure according to the present invention is applied, and 4 is an explanatory assembly diagram showing the main parts of the same speaker, and FIG. 4 is a sectional view showing other main parts of the same speaker. DESCRIPTION OF SYMBOLS 1, 16... Magnetic circuit, 6, 23... Supporting member (frame), 8, 17, 24... Damper, 8a... Outer peripheral part, 17a... Inner peripheral part, 14... Supporting member (spacer).

Claims (1)

[Claims for Utility Model Registration] A support structure for a speaker damper in which the outer periphery of the damper is clamped and fixed between a magnetic circuit and a support member for the magnetic circuit, comprising: a plate constituting the magnetic circuit; A stepped portion is formed on the upper surface of the outer periphery of the support member, and warts are provided on the upper surface to protrude at predetermined intervals along the circumferential direction, and the flange portion connected inward from the bottom of the support member is provided with the above-mentioned warts. forming a hole into which the wart is inserted at a position corresponding to the wart; forming a hole into which the wart is inserted on the outer periphery of the damper; and fixing the damper by clamping it over the entire circumference of the damper; A support structure for a speaker damper characterized by the following.