JPH01253394A - net board - Google Patents

Abstract

PURPOSE:To make the excessive part of net cloth required for hanging the net cloth on a projection smaller than the conventional example so as to reduce the required dimensions of the net cloth by providing the projection for tentative ly fixing the net clock on the thermally press-adhering section of a frame in a net plate used for a loudspeaker system, etc. CONSTITUTION:A net plate 2 is usually fitted to a loudspeaker system 1 by utilizing fitting parts 3. A projection 5c for tentatively fixing net cloth 4 is provided on the frame 5 of the net plate 2 and the net cloth 4 is hung on the projection 5c for fixation. After the net cloth 4 is thermally press-adhered to the thermally press-adhering section 5a of the frame 5 after the net cloth 4 is tentatively fixed to the frame 5, the excessive part 4a' of the net cloth 4 is cut off along the side face of the frame 5. Since the section 5a is pressed by a hot plate at the time of thermally press-adhering the net cloth 4, the projec tion 5c for tentatively fixing net cloth 4 is crushed and a finished product which is not different from the conventional example can be obtained. In addition, the excessive part of the net cloth 4 can be made smaller than the conventional example.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a net board used in speaker systems and the like.

Conventional technology Figure 3 shows a speaker system using a net board. Generally, a system in which a net plate 2 is attached to a speaker system 1 using an attachment part 3 is often used.

A conventional net board has a structure shown in FIG. That is, as shown in the cross-sectional view of the Nesoto board in FIG. 4, the net fabric 4 is fixed to a frame 6 made of a thermoplastic material by thermocompression bonding with a thermocompression bonding part 5a under tension. It is made up of.

Problems to be Solved by the Invention According to the conventional method, the net fabric 4 is fixed by thermocompression bonding with the thermocompression bonding part 5a under tension, so the method shown in FIGS. there was.

That is, as shown in FIG. 6, first, the net pasting jig 6 is placed in the frame 5, and the net fabric 4 is hooked with tension on the protrusion 7 provided on the net pasting jig 6. Temporarily fix the fabric 4. Next, as shown in FIG. 6, the net fabric 4 is thermocompression bonded to the frame 6 using a thermocompression bonding section 5aK. After that, the net fabric is removed from the protrusion 7, the net pasting jig θ is removed, and the remainder 4a of the net fabric 4 is removed along the side surface 5b of the frame 5.
cut.

However, according to this method, in order to temporarily fix the net fabric 4, it is necessary to apply tension to the protrusion 7 provided on the net pasting tool 6 and hook the net fabric to the protrusion 7. There is a problem in that a margin 4a of the net fabric 4 is required for pulling the net on the inside, and the necessary dimensions of the net fabric 4 become larger accordingly.

In view of the above problems, the present invention provides a margin 4 of the net fabric 4.
To provide a net board capable of reducing a and the required dimensions of a net fabric 4.

A means for solving the problems and a technical means of the present invention for solving the above-mentioned problems is to provide a protrusion for temporarily fixing the net fabric to the thermo-compression bonding part of the frame.

For production The effect of this technical means is as follows.

In other words, since the thermo-compression bonding part of the frame is provided with protrusions for temporarily fixing the net fabric, the margin of net fabric required to hang the net fabric on the protrusions is smaller than before, and the required dimensions of the net are reduced. can be made smaller.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings.

In FIG. 1, a protrusion 5 for temporarily fixing the net fabric 4 to the frame 5 is shown.
C is provided so that the net fabric 4 can be hooked and fixed. In this state, as shown in Figure 2, the frame 6
After the net fabric 4 is thermocompression bonded with the thermocompression bonding part 5a, the margin 4a' of the net fabric 4 is cut along the side surface 5b of the frame 5. Since the thermocompression bonded portion 6a is pressed by a hot plate during thermocompression bonding, the temporary fixing protrusion 6C is crushed, and the finished product is the same as the conventional one. Furthermore, the margin 4a' of the net fabric 4 can be made smaller than before.

Effects of the Invention In the present invention, projections for temporarily fixing the net fabric are provided in the net fabric thermocompression bonding portion of the net board frame, so the size of the net fabric can be made smaller than before.

[Brief explanation of the drawing]

Figures 1 and 2 are sectional views of essential parts of a speaker net plate according to an embodiment of the present invention, Figure 3 is a schematic diagram of the speaker system and net plate, and Figure 4 is an enlarged sectional view of essential parts of the net plate. ,
FIGS. 5 and 6 are cross-sectional views showing a conventional example. 4... Net fabric, 5... Frame, 6C.
·····protrusion. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2: C-half-tl, 1 is attached, almost perfect Figure 6

Claims (1)

[Claims] In a net board consisting of a frame made of thermoplastic material and a net fabric that is bonded to the frame by thermocompression bonding, protrusions are provided in the thermocompression bonded portion of the net fabric of the frame, and the net fabric is attached using the protrusions. A net board that temporarily fixes net fabric during thermocompression bonding.