DE1719002U - MAGNETIC LITTLE HOER. - Google Patents

Description

21a ² Ϊ / Οί- i7i9002. Max Grundig, Fürth (Bay.). } Masaetisdi «Kleinst- _n . -, listener. 6. lj ^ ijg. 126/0. (T- *; line 1)

PA

Furth, December 5, 1955 Elskiro-Msehanische Versuchsanstalt "72-5Ie-VT ψ-

Owner hiaix virundig
FUrth (Bavaria), Kurgartenstrasse 37

Magnetic miniature speaker

The subject of the fire is a small magnetic earphone. Such Microphones are mainly used for dictation and hearing-impaired devices used and with the help of a / uieatzes in an ear adapter (Ear olive or ear clip) held.

Ss is known for such small headphones for holding the Magnetsystenis on the one hand and the approach for the watch fitting on the other hand a Mehrzaix? very precise to work £ deer, spray and Use dance parts, thereby making the magnetic Kleinstnörer is much more expensive.

The innovation enables a significant reduction in manufacturing costs the small magnetic earphone in hand, in-which . Renewal of the door part containing the magnet system by vacuum injection or overmolding is made with plastic.

According to an advantageous further development of the fire, a plastic housing is used made of two interconnected plastic shells used, one of which is a plastic shell due to the magnetic system and the one others use the approach for dus Ciirpaiiatück (ohrclip or Oiirolive).

The following is an example of an example based on figures 1 to 3 the innovation described. Of these figures show dio ii ^ uren 1

> l _a 1/01. 1719002. Max Grundig, Fürth (Bay.). I Magnetic micro-noise. 6. 12. 55./ G 126/0 . (T. 4; line 1)

- 2 - ^v ft t} £. 558

and 2 svel different .AuJenaruichten of the proposed Kloinsthörers in natural size and the figure 3 is a cross-section through the H5rsr in siiisnj stark ysrgrüSerteaa scale.

During the production of the receiver part carrying the magnet system first the magnetic core 1 and then the magnetic coil 2 and the Kingmagnet 3 and the pole plate 4 inserted into the mold. ? ur performing the magnet coil connection line iat in the pole plate 4 a Recess 5 is provided in the form of a slit. A similar recess 6 or 6 V, the Isolierstroff disc 7 or 7 * dee over the tapered Kagnotkernende 8 overclothed yellow packet on, deseen individual panes are connected to one another by riveting. After this preparation, the listener part containing the Magnetayateia will be carried out by casting, overmolding or urap molding plastic e.g. Made of polystyrene or ^ tyron. At the same time there is a paragraph 9 in the plastic bowl 10 surrounding the iiagnetuystem cast, injected or pressed into which the aombran 11 is inserted at a distance from the magnet system. Likewise in the The solenoid coil connection line 12 is cast in, injected or pressed in with plastic.

The one with the above-described receiver part, preferably by means of a block connected other üehuuseschule 13 made of plastic is preferred made in the same catfish. This is the conical approach for the GhrpaJstück (earclip or Ghrollve), not shown the production of the housing shell with form-fitting cast, injected or pressed in. Both house bowls are so in one Process brought into its finished form.

In addition to the adhesive 15, the housing shell 13 can be provided with a can cover-like Training and jamming on the other Jeluius bowl 10 are attached, an elastic plastic is used E.g. Lupolen or ütyron chosen for the Geliäusschale 13. The Anerttz 14 can also use an abrasion-resistant one instead of stainless steel Plastic e.g. Lupolen and if necessary with the Housing shell 13 form a materialho.-no ^ enen 'veil or from another suitable plastic pleasure marriage.

Claims (7)

1. Magnetic miniature headphones, characterized in that the magnetic system expresses itself (1 ... 4) containing the earpiece part by overmolding, overmolding or overmolding is made with plastic. 2. Handset according to claim 1, characterized by a plastic housing made of two interconnected plastic shells, of which the a plastic shell (.10) the magnet system (1 ... 4) and the other (13) the approach (14) for the ear adapter (ear clip odor unrollve) wearing. 3 · handset according to claim 2, characterized in that the connection the two plastic shells together by gluing (15) iBt. 4. Listener after spoke 1, 2 or 3 «characterized in that daii also \ | the solenoid connection line (12) is cast, injected or pressed into the plastic shell (lü) carrying the iiagnetsystem. 5. Receiver according to claim 4, characterized in that the i'iagnetspulenanschluflleitung (12) through recesses (5, 6) from into which the magnet '■ *'. ■■■■■■■■ ' ^: ' ■ ■■ ". ' ■■■■ '- - ■ ■ "■■'. AO system-bearing plastic shell (Iu) with cast, injected or pressed-in insulating disks (7). 6. Handset according to one of claims 3-5, characterized in that. the membrane (11) in the plastic shell carrying the magnet sy et em (10) is inserted and at a distance voi .. Magnet system on one with cast, injected or pressed-in shoulder (9) of the plastic shell rests. 7. Handset according to claim 1 or the following, characterized in that the approach (14) for the Ohrpaßutück is made of plastic and a material-homogeneous part of the associated plastic shell (13) represents, odor made of a different plastic like the Üchale boataht. 121a ² 1/01. 1719 002. Max Grundig ,! ^ j * p, 7 1ξ5δ i E I hear. 6. 1 2. 55. ' G IZ o / U -— v_j-ι -; - H ^. Receiver according to Claim 1 or the following, characterized in that the nozzle shell (13) is formed into a shape and with or other plastic shell (lo) is clad with other plastic shells (lo).