JPS6338635Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to improving the amplitude balance of an elliptical speaker.

Conventionally, an elliptical speaker is as shown in Figure 1.
A frame 4 with an elliptical opening and a circular bottom is attached to the top surface of the magnetic circuit, and the outer periphery of the diaphragm 5 is attached to the outer periphery of the frame 4, and the voice coil placed in the center of the magnetic gap is attached hanging down to the center. Was. In this case, a relay terminal is attached to one side in the long diameter direction of the diaphragm 5, the lead wire of the voice coil is aligned with the top surface of the diaphragm 5, the tip is soldered to the relay terminal, and adhesive is applied on the lead wire. When one end of the tinsel wire 6 is soldered to the relay terminal and the other end is soldered to the terminal plate 7 of the frame 4, the weight of the relay terminal, lead wire, adhesive, tinsel wire, etc. is soldered to one side of the oval diaphragm. is added, the weight balance of the left and right diaphragms in the long diameter direction is disrupted, and when the sound is emitted with a large amplitude, the balance between the left and right is further disrupted, and the balance between the left and right amplitude amounts is disrupted, resulting in poor sound. In recent years, there has been an increasing demand for smaller size, higher output, and wider bandwidth for oval speakers.
In order to meet this demand, there was a problem, especially in the low frequency amplitude.

The present invention was devised to solve the above problem, and to explain the embodiment shown in the drawings, as shown in FIG. This is an elliptical speaker in which a window 3 with a smaller area is drilled in the back half of the side where the relay terminal is not attached, compared to the window 3 drilled in the half on the side where the relay terminal is attached.

Since the present invention has the structure described above,
At the time of the amplitude of energization, the size of the window area of frame 1 is changed and the back pressure is used to keep the left and right vibration weight balance in equilibrium, and at the same time, the unbalance between the side where the relay terminal is installed and the opposite side is This is intended to improve the low frequency amplitude that occurs.

As described above, the present invention eliminates the unbalance caused by attaching a relay terminal on one side of the elliptical diaphragm in the longitudinal direction by changing the area of the window in the elliptical frame at the rear of the diaphragm to reduce back pressure. This is an industrially useful idea that can be used to maintain balance during amplitude and improve low-frequency amplitude.

[Brief explanation of the drawing]

FIG. 1 is a rear view of a conventional elliptical speaker, and FIG. 2 is a rear view of the elliptical speaker of the present invention. 1 is the frame, 2 is the diaphragm, and 3 is the window.

Claims (1)

[Scope of utility model registration request] In the back half of the side of the diaphragm 2 on which the relay terminal is not attached, in the longitudinal direction of the elliptical frame 1, a window 3 is formed, which is smaller in area than the window bored in the half on the side where the relay terminal is attached. oval speaker installed.