JPH03147497A - Speaker equipment - Google Patents

Abstract

PURPOSE:To prevent production of noise sound and to improve the quality without using a cushion by providing a wiring code fixing rib having a notch between a piezoelectric speaker and a dynamic speaker. CONSTITUTION:When an input signal is applied to a terminal 17, a piezoelectric speaker 9 and a dynamic speaker 10 are operated and a sound wave is generated. A wire code 11 is fixed to a rib 12 and the vibration of the cord 11 attended with the pressure of sound wave is suppressed small. Moreover, the position of the rib 12 is placed to the position at a port side not in contact with a bass reflex port 15 and a cabinet 16 to prevent the generation of the abnormal sound due to the contact with the cord 11, the port 15 and the cabinet 16. Moreover, the cord 11 is surely fixed by the notch 13 of the rib 12 and the disconnection of soldered part of the speaker 9 is prevented due to touch of the cord 11 by a hand during the assembling of the speaker.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a speaker device used in various audio equipment, television receivers, and automobiles.

Conventional technology In recent years, speaker devices used in television receivers, etc.
The mainstream is a bass reflex type that has a port that connects the inside and outside of the cabinet, which is small and has excellent bass reproduction, and the cabinet is made of resin, which is inexpensive and has an excellent appearance. A conventional speaker device constructed from resin will be described below.

FIG. 7 shows a conventional bass reflex speaker device having a port connecting the inside and outside of the cabinet. In FIG. 7, 1 is a cabinet made of resin, and 2 is a baffle plate made of resin.

6 is a port located on the baffle plate 2. A piezoelectric speaker 3 and an electrodynamic speaker 4 are installed in such a device, and a wiring cord 5 is used to wire the piezoelectric speaker 3 and the electrodynamic speaker 4, and the electrodynamic speaker 4 and a terminal 7. It is a device.

The operation of the speaker device configured as described above will be described below.

First, by applying an input signal to terminal 7,
The electrodynamic speaker 4 and the piezoelectric speaker 3 each operate as a speaker according to an input signal and generate sound waves outside and inside the speaker device. At this time, when the applied input signal is near the Helmholtz resonance frequency determined by the bass reflex speaker device, a strong change in air pressure occurs near the boat, and the wiring cord passing near the boat
Excite.

Problems to be Solved by the Invention However, in the above configuration, when an input signal near the Helmholtz resonance frequency is applied, the wiring cord 5 is excited and vibrates, causing the wiring cord 5, the cabinet 1, and the wiring cord 5 to The boat 6 and the wiring cords 5 come into contact with each other and generate abnormal noise. Furthermore, since the wiring cord 5 is not fixed between the piezoelectric speaker 3 and the electrodynamic speaker 4, it is difficult to solder the piezoelectric speaker 3 by hooking a screwdriver or hand onto the wiring cord 5 during speaker assembly work. There was a possibility that the attachment could come off.

Conventionally, in order to prevent these problems, there was a method of pasting a cushion on the wiring cord 5, but although this method could prevent abnormal noise caused by the vibration of the wiring cord 5, it could cause the solder of the piezoelectric speaker 3 to come off. However, there was no effect because there was no difference in the fact that the wiring cord 5 was not fixed between the piezoelectric speaker 3 and the electrodynamic speaker 4.

In addition, since cushions are used, there are disadvantages in terms of manufacturing process costs such as material costs and processing costs.

The present invention solves these conventional problems and provides an inexpensive speaker device that is excellent in quality and prevents abnormal noise from occurring even without a cushion, and also prevents solder from coming off. The purpose is to

Means for Solving the Problems In order to solve this problem, the speaker device of the present invention includes a rib having a valley-like cut with a width slightly narrower than the width of the wiring cord at one place between two wiring points. Or, set up several places,
The structure is such that the wiring cord is fixed by pushing it into this valley-shaped notch.

Effect: With this configuration, the wiring cord can be easily fixed so that it does not touch the cabinet or boat without using other parts such as cushions. In addition, it is possible to eliminate the problem of the soldering of the piezoelectric speaker coming off due to a screwdriver, hand, etc. getting caught in the wiring cord during the assembly work of the speaker device.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 2 shows the main parts of a speaker device according to an embodiment of the present invention, in which a piezoelectric speaker 9 and an electrodynamic speaker 10 are attached to a baffle plate 8, and a wiring cord 11 connects the two speakers. This is a wiring diagram. The wiring cord 11 has one end connected to the piezoelectric speaker 9 by soldering, and the other end wired to the electrodynamic speaker 10. The vicinity of the center of the wiring cord 11 is inserted and fixed into a notch 13 of a wiring cord fixing rib 12 provided integrally with the baffle plate 8. Notch 13 as shown in Figure 3
If a taper 14 is provided at the end, the wiring cord 11 can be easily inserted. 15 is a bass reflex port. Figure 1 shows a piezoelectric speaker 9, an electrodynamic speaker 10, a wiring cord 11, a bass reflex boat 15, a cabinet 16 and a terminal 17 attached to the wiring cord fixing rib 12 built into the baffle plate 8 configured as described above. This is a speaker device.

The operation of the speaker device configured as described above will be described below.

First, by applying an input signal to the terminal 17, the piezoelectric speaker 9 and the electrodynamic speaker 10 operate as speakers, and generate sound waves outside and inside the speaker device. When the input signal is near the Helmholt resonance frequency of the speaker device, the wiring cord 11 is vibrated due to strong air pressure changes near the bass reflex port 15.

However, since the wiring cord 11 is fixed to the wiring cord fixing rib 12, the vibration of the wiring cord 11 is
It will be kept small. Furthermore, by locating the wiring cord fixing rib 12 on the side of the boat where it does not touch the bass reflex port 15 or the cabinet 16, abnormal noises due to contact between the wiring cord 11 and the bass reflex port 15 or the cabinet 16 can be prevented. (The wiring cord 11 can be
Since the piezoelectric speaker 9 is more securely fixed, it is possible to prevent the soldering of the piezoelectric speaker 9 from coming off by hooking a screwdriver or hand onto the wiring cord 11 during the assembly work of the speaker device.

As described above, according to this embodiment, the wiring cord fixing rib 1
2 at a port side position where the wiring cord 11 does not touch the cabinet 16 or the bass reflex port 15, and by inserting and fixing the wiring cord 11 into the notch 13 of the wiring cord fixing rib 12, the wiring cord 11 and the cabinet 1 can be connected.
6 and the bass reflex port 15 are in contact with each other, and it is possible to prevent the soldering of the piezoelectric speaker 9 from coming loose due to a screwdriver or hand getting caught in the wiring cord 11 during assembly work. .

In the embodiment, a taper 14 is provided in the notch 13 of the wiring cord fixing rib 12, but as shown in FIG.
By providing the R portion in the notch 13, the wiring cord 11 can be inserted even more easily. Furthermore, a protrusion 18. By forming the notch shape with grooves 19, the fixing force of the wiring cord 11 can be further increased.

Effects of the Invention As described above, the present invention provides a wiring cord fixing rib having a notch at one or several places between a piezoelectric speaker and an electrodynamic speaker, and inserts the wiring cord into the notch. Just fix it in place without using parts such as cushions (prevents abnormal noise caused by vibration of the wiring cord and contact with the bass reflex port or cabinet, and
It is possible to provide an excellent speaker device that can stably prevent soldering in a piezoelectric speaker from coming loose due to a screwdriver or hand getting caught in the wiring cord during speaker device assembly work.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the speaker device of the present invention, and FIG. 2 shows a piezoelectric speaker on a baffle plate,
Figure 3 is a perspective view of the wiring cord fixing rib of the speaker device, and Figures 4 to 615... Port 16... Ushiyabi U. 8...Baffle plate, 9...Piezoelectric speaker, 10...Electrodynamic speaker, 11...
...Wiring cord, 12...Wiring cord fixing rib, 13...Notch, 14...Taper 15...Bass reflex port, 16...・
Cabinet, 17...terminal. Figure 2 Figure 3 Death 4 Figure 5 Figure 7 Raku 6

Claims (1)

[Claims] An electrodynamic speaker and a piezoelectric speaker are arranged on a baffle plate of a cabinet made of resin, and a bass reflex port is provided between the electrodynamic speaker and the piezoelectric speaker.
The wiring cord connecting the electrodynamic speaker and the piezoelectric speaker is routed on the baffle board so as not to touch the bass reflex port, and one end of the wiring cord is connected to the piezoelectric speaker by soldering, and the wiring cord is connected to the piezoelectric speaker by soldering. A wiring cord fixing rib having a V-shaped notch is provided at the intermediate portion between the electrodynamic speaker and the piezoelectric speaker and near the piezoelectric speaker, and the wiring cord is fixed by inserting it into this V-shaped notch. speaker device.