DE4106382C2 - - Google Patents

Description

Hand-held instruments are accordions, bandoneons, concertinas, distonic harmonicas (accordion).

The sound is generated by reeds, usually from Steel on punched aluminum reed plates with steel rivets are riveted.

The state-of-the-art riveting process is currently used by all hand-operated instrument manufacturers. ( Fig. 3)

The requirement is:

The reed should be evenly spaced from the Have a reed slot.

The rivet must not be tightened so much that the fastening end is bent.

Pitch fluctuations are the result.

Only professionals with long professional experience can do this fulfill.

The invention is based on the problem, the attachment and To simplify alignment of the steel reeds so that none special specialists are more required.

The reeds are aligned in length and width through the molded-on stop bars and pockets.

The reeds are attached by gluing in the filler block in the filling block shafts.

It is advantageous with this reed plate construction that a A large number of identical reed plates with the same dimensions, per spray shot, can be injected.

There is no need for complex adjustment and riveting devices Skilled workers are served.

Due to the low specific weight of the plastic, ver the total weight of a hand-held instrument is reduced about 40%.

It is also known (DE-PS 8 93 001), the tongues in on the upper stuck attached side of the reed plate and there to glue.

It is also from the publications DD 76 877 and DE-AS 10 78 860 known, the reed plate by injection molding from plastic produce, the tongues with their fasteners overmolded in the mold itself.  

An embodiment of the invention is in FIGS. 1 and 2, which are essentially self-explanatory.

Show it
1 molded plastic reed plate,
2 molded pocket for receiving and aligning the inserted steel voice tongue,
3 molded bridge to fix the length of the steel reeds and cover valves on the opposite side,
4 filling block chute for receiving and gluing the filling block,
5 filling blocks for fastening the steel reed,
6 steel reeds.

Explanation

In a plastic reed plate ( 1 ) 2 steel reeds ( 6 ) are inserted into a molded pocket ( 2 ) up to the molded stop ( 3 ).

Then 2 filling blocks ( 5 ) are wetted with a 2 component glue and one each is inserted into a filling block shaft ( 4 ) for mounting the gene.

This process gives the steel reed a hold and direction stability.

Claims (5)

1st reed plate with tongues for hand-drawn instruments

• - With two pockets ( 2 ) for receiving the tongues (6),
• - With filling block shafts ( 4 ) which extend below the pockets ( 2 ) through the reed plate ( 1 ),
• - With stop bars ( 3 ) for the tongues ( 6 ) accommodated in the pockets ( 2 ),
• - The reed plate ( 1 ) with the plug-in compartments ( 2 ), stop bars ( 3 ) and filling block shafts ( 4 ) is an injection molded plastic part,
• - And wherein the clay tongues ( 6 ) are fastened by filling blocks ( 5 ) inserted into the filling block shafts ( 4 ), which are also designed as injection molded parts.

2. reed plate according to claim 1, wherein the tongues ( 6 ) consist of steel. 3. reed plate according to claim 1 or 2, wherein the attachment of the tongues ( 6 ) takes place in that the filling blocks ( 5 ) have cylindrical extensions, the corresponding openings of the tongues ( 6 ) and the slots ( 2 ) by grab. 4. Process for the production of reed plates for hand-operated instruments,

• - The reed plates ( 1 ) with pockets ( 2 ) for recording tongues ( 6 ), stop bars ( 3 ) for the tongues ( 6 ) and filling block shafts ( 4 ) below the pockets ( 2 ) the reed plates ( 1 ) reach through, are injection molded as a molded part in plastic,
• - The tongues ( 6 ) are inserted into the pockets ( 2 ) and aligned in their length by contact with the stop bars ( 3 ),
• - Filling blocks ( 5 ) are injection molded as plastic molded parts,
• - And wherein the clay tongues ( 6 ) by the in the filling blocks shafts ( 4 ) inserted filling blocks ( 5 ) are attached.

5. The method according to claim 4, wherein the filling blocks ( 5 ) are fastened in the filling block shafts ( 4 ) by gluing.