JPS6314545Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for a speaker, and particularly to a mounting structure in which a back cavity and a speaker are integrated and mounted.

Conventionally, as shown in Fig. 1, a back cavity 22 has been attached to the back side of a speaker 21 such as a midrange range to block internal pressure fluctuations in the enclosure and prevent adverse effects on sound quality. , the back cavity mounting flange 25 is clamped between the speaker mounting flange 23 and the buttful plate 24, and the speaker mounting flange 23 and the back cavity mounting flange 25 are jointly tightened to the buttful plate 24 with the mounting bolts 26. This structure was common.

However, in the conventional device described above, the mounting strength of the back cavity 22 and the speaker 21 is weak, and since the mounting strength is constant, there is a risk that resonance may occur in the mounting portion when a large input is applied. .

An object of the present invention is to provide a speaker mounting structure that eliminates the above-mentioned drawbacks of the conventional structure, allows a back cavity and a speaker to be firmly mounted, and is free from the risk of resonance.

Hereinafter, the configuration of the present invention will be explained based on FIG. 2, which is an embodiment thereof. In the figure, 1 is a full plate, 2
is the entire speaker, and 3 is the speaker frame. The speaker mounting hole 4 of the full board 1 is formed with a tapered surface 4a so that the diameter becomes smaller as it goes outward, and the outer surface of the frame 3 is formed with a tapered surface 3a that is symmetrical to the above-mentioned tapered surface 4a. has been done. Therefore, a trapezoidal wedge fitting groove 5 is formed by the tapered surface 4a and the tapered surface 3a of the speaker mounting hole 4 described above. Reference numeral 6 denotes a cylindrical back cavity with a bottom, and a flange portion 7 is formed at the opening edge of the back cavity, and tapered surfaces 7a and 7b corresponding to the tapered surfaces 3a and 4a are formed on the inner and outer surfaces of the flange portion 7. is formed so that the flange portion can be press-fitted into the wedge fitting groove 5. When installing the back cavity 6, after fitting the flange portion 7 into the wedge fitting groove 5, bolts are tightened at positions dividing the speaker mounting flange 2b provided around the outer periphery of the speaker frame 2. By tightening the bolts 8, the flange portion 7 is press-fitted into the wedge fitting groove 5, and the speaker frame 3,
The flange portion 7 and the full plate 1 are firmly fixed. In addition, back cavity 6
is located inside the speaker enclosure, so to prevent it from falling into the speaker enclosure during assembly, the presser plate 9 is screwed to the back of the buttful plate 1 to prevent the back cavity 6 from falling. I'm starting to do that.

According to the speaker mounting structure of the present invention, the speaker mounting hole of the buttful plate is formed with a tapered surface so that the diameter becomes smaller toward the outside, and the outer surface of the speaker frame is opposite to the tapered surface. has a tapered surface that is symmetrical to the tapered surface, and a wedge fitting groove is formed between both tapered surfaces, and a flange portion that fits into the wedge fitting groove is formed on the opening edge of the back cavity. is formed, and the flange portion is fitted and held by the fastening means, so the back cavity and the speaker can be firmly fixed to the back full plate, preventing the occurrence of resonance and improving the sound quality. You can improve your performance. Additionally, when the temperature of the speaker frame rises, the flange expands, making the speaker frame even more securely attached.
It has excellent features such as being able to handle continuous large inputs.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional back cavity mounting structure, and FIG. 2 is a sectional view showing an embodiment of the speaker mounting structure according to the present invention. 1: Full board, 2: Whole speaker, 3: Speaker frame, 4: Speaker mounting hole, 3
a, 4a: Tapered surface, 5: Wedge fitting groove, 6: Back cavity, 7: Flange portion.

Claims (1)

[Scope of utility model registration request] The speaker mounting hole of the round board has a tapered surface that becomes smaller in diameter as it goes outward, and a tapered surface that is symmetrical to the tapered surface is formed on the outer surface of the speaker frame to oppose this. A wedge fitting groove is formed between both tapered surfaces, and a flange portion is formed on the opening edge of the back cavity to fit into the wedge fitting groove, and the flange portion is connected to the fastening means. A speaker mounting structure characterized in that the speaker is fitted and held by.