JPS6033674Y2 - speaker grill - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a speaker grill that can be assembled with simple work.

Conventionally, when manufacturing a speaker grill, as shown in Fig. 1, four plates 1, four triangular roots 2 and reinforcing bars 3 that connect them are prepared, and these members are connected with nails or screws. They are combined one by one to form a wooden frame 4 as shown in Figure 2,
After attaching the mounting bracket 5 for removably attaching the speaker grill to the speaker box to each triangular root 2, cover the entire wooden frame 4 with a net 6, and fold the end of the net 6 back to the back of the wooden frame 4. I was working on stopping it with a step lure.

However, this method has the disadvantage that the work efficiency is extremely poor because there are many places where nails or stellar pulls need to be inserted, and the dimensions of the completed grill tend to vary.

The present invention provides a speaker grill that eliminates these conventional drawbacks.

An embodiment of the present invention will be described below with reference to FIGS. 4 to 8.

In the figure, 8 is a thermoplastic resin extrusion product, which is extruded into a bottom mold with a cross-sectional shape as shown in Fig. 4, and then V grooves 9 are provided in the width direction as shown in Fig. Fold it into a frame shape along the border, and glue both ends to complete the frame.

Then, apply adhesive 10 to the four corners of the frame as shown in Figure 6, and attach triangular plates 11 and reinforcing bars 12, which also serve as mounting members for attaching the speaker grill to the speaker box, to the wooden frame. Complete.

Note that since the triangular roots 11 can be installed internally at the corners of the finished product 8, the installation position can be made extremely accurate.

Further, since the frame body is made of an extruded product 8, its cross section can be shaped to facilitate attachment of the triangular plates 11 and reinforcing beams 12.

In addition, since the finished product 5 will eventually be covered with a net, rather than making it into a shape that is less likely to have defects in appearance, it should be shaped in consideration of its shape as a structural member and the design when covered with the net. is desirable.

Next, as shown in FIG. 7, the surface of the wooden frame is covered with a net 13, the end of the net 13 is folded back onto the attachment surface of the finished product 8, and the folded part is pressed with a heating element (not shown). Then, a part of the finished product 8 melts and penetrates into the mesh of the net 13, and when it cools, the pasting of the net 13 is completed as shown in FIG.

At this time, if the material color of the finished product 8 is selected to match the color of the net 13, there is no need for painting.

Furthermore, the extrusion bottom mold of the finished product 8, cutting of grooves, bending (folding), heat welding of the net 13, etc. can all be automated, so assembly work can be greatly simplified.

Furthermore, since the position of the V-groove in the finished product 8 can be changed arbitrarily, it is possible to provide speaker grilles of the same design to many types of speakers.

As described above, the present invention involves folding a thermoplastic resin extrusion product and thermally welding the net, which greatly increases the number of processes that can be automated compared to conventional methods and facilitates mass production. At the same time, it is possible to produce products with high dimensional accuracy.

In addition, since it can be used in many different models, the extrusion mold can be quickly depreciated, and from a design standpoint, it is possible to change the outer periphery of the net-covered product by simply considering the cross-sectional shape of the extruded product.

[Brief explanation of drawings]

1 to 3 are views showing a conventional speaker grill in the order of manufacturing steps, and FIGS. 4 to 8 are views showing a speaker grill according to an embodiment of the present invention in the order of manufacturing steps. 8...Thermoplastic resin extrusion product, 9...
・Groove for folding, 10...
・Adhesive, 11... Triangular root, 12...
・Reinforcement machine, 13...Net.

Claims (1)

[Scope of utility model registration request] It is characterized by being composed of a frame formed by holding an extruded thermoplastic resin product, and a net that covers the surface of the frame and has a folded part fixed to the attachment surface of the frame by heat welding. speaker grill.