DE1763296A1 - Brush structure for use in a small electric collector machine - Google Patents

Description

DiPl ₁ -IiIg ₁ FJ ₁ KUPFEBMANN. PHlI. 2372

.Patent attorney äT

Applicant: N.T.Philips' (rloeilampenf abrieken 17ROOQß

File No. PHN- 2372 I / O - ** Sb

Registration dated: April 29, 1968

Carbon brush formation for .application in a small electrical AOlle .gate machine.

The invention relates to a hollow brush structure for use in a linen electric collector machine, in particular in a small oil-trimmed collector motor in a household appliance with ₍ One of them in the direction of the volilcnliürsüenhalter can be pushed away, with the sole brushes attached to an injection-molded part made of a thermo-oplated vunatstorr T, standing.

Such ..olilenbürstengebilder are known in which uie rrag-pl.i.tt ©. is provide with rinnοιιίοχ'-α ^ βη Eolilungen in which pipes .. f "r: iige <.ohlonbüra {; ciiho, NETELLER" tit Ililxe 'a separate xOidruekplutte are clamped.' Δυι, ι Yerltiiton an axial displacement of the coals -

^: ■ - "■ '■

büratoniu.lters go _t uii dio u.ra _OH _.l itte iat the a.ra.gplatte with every gutter-shaped Löhlun .. uit uinuü iUisatz that with a translation in 'ior' .ivnd des in the. "alun ;. bofostierter .wuulenüürstenhaltero auaaisinenv; irken can.

1098 A4 / 0374

· -. . . »
BAD ORlQINAL

-2- PHN. 2372.

The structures of the type mentioned and similar have the disadvantage that separate parts are required to attach the Üohlenbürstenhalter.

The purpose of the invention is to provide a support plate for a carbon brush holder to create at the [attachment of the carbon brush holder .: a special items are required, and is characterized that the coal burate holder only by means of the support plate pin as a whole forming fastening means connected to the iragplatte are.

The structure of the invention successfully utilizes a combination of properties of many thermoplastic features, namely their very high electrical resistance, their mechanical strength and their associated great flexibility and finally the Property that intricate shapes can be achieved with the aid of an injection molding process.

A favorable embodiment of the invention is characterized in that the fastening means consist of the back parts which are resiliently pressed on by the bolt holder. The tubular carbon brush holders are assembled by sliding them under the bridge parts. Because of the elementary nature of this process, the assembly can be carried out by untrained or semi-trained personnel, which is of utmost importance when the I,: otor ia a ma.s3enprodu.ct, such as z »r>. to be applied in a sustainable manner.

Another variant is characterized by the fact that the support plate is also provided with this centering cam, which forms a whole, and / or jtossnoc.:en, with the aid of which the carbon brush shoulder is provided be pushed under the relevant back part. That way will get a guide for the brush holder for single-disc while also the presence of Ütossnocken prevents the carbon brush holder at the i., ontage can be advanced too far »

109844/0374
BATH ORIGINAL

-3- ■ PM. 237 ^.

-. A further development is characterized in that the Xohlen- ■ -.brestholders are only formed by earstyles that have been cut off and deburred after the correct lung. L. off. .essing, which only needs to be subjected to the elementary processing mentioned above.

The self-hat price of the product τ / is reduced even further, if the shoulder of the bristle is simply cut off from a lass and then there are metal strips shaped into an ear, there then the deburring process can be omitted.

.For another .Training rulien the carbon brushes against iun ..olleivtox · drüc .eiiüeii fV-uürn aui the Vuii connected to the carbon brushes despatched Üj.tu txuf XÖ ^ ^ ₀ büX'en IEU IiCiI by n-luiiiUiung with the support plate. .ic ironing. AUCi. aie iviüKicblltjüi laüstiii uioh so on simple Weinö and without v'c-ri.'on..un _u of ..ex ·:. attach testimony by the :; they are fixed by hand on the support plate. In addition, the carbon brush holder needs to be 'subjected' to processing which in many cases, when the burrs formed in the interior of the carbon brush holder as a result of processing, make deburring necessary again.

A guiding principle in which the above-mentioned clamping brackets are reversed is characterized in that the clamping brackets rest directly on the brush holders through holes xix in the carrier plate Small brackets and the carbon brushes are rage-filled so that no direct electrical connection between the carbon brushes and the roller brushes is required is the ... ounting easier because ■ carbon brushes vedern and K.lemmbÜ £ el separate parts. the replacement abgenutstei · carbon brushes ex-facilitated is because no L'6v ~ need to be resolved compounds.

1098U / 0374
BATH ORIGINAL

-4- PHN. 2372.

In a further development, bind all carbon brush holders uui 'attached to a single support plate, which in don both to the nearly Self-releasing in vertical directions through the support plate is designed, for what purpose the with respect to the above-mentioned Level protruding Jeitenwändu each bridge part directly connect to an opening in the support plate.

The description is explained in more detail below for an exemplary embodiment with reference to the drawing. Eb show:

1 shows a view of the collector of an electric motor provided with a support plate made of a thermoplastic material,

Pig. 2 is a side view of the engine in the direction of arrow A uer Fig. 1 _f . with the clamps removed, and

3 shows a section through part of the support plate in place of a carbon brush holder.

In Fig. 1, 1 denotes a stator which consists of a laminated core with a number of otators ^ ulen 2, 3 and 4 consists. The sheet metal package is with this one. usführungsform pushed with a clamping PciUüun ^ on two pins 5 (see also Fi ^. 2), which are in turn attached to a provided in the drawing, not illustrated W- frame.

The / iotor is denoted by 6 and has a collector 7 Mistake. On the central side of the gate is the niotor with one also with Clamping fit on the pins 5 pushed out of a thermoplastic Plastic existing support plate 8 is provided on which the connected with herυ Carbon brush holder 9 only through with the support plate Completely educational means in the form of carbon brush holders resiliently pressing bridge parts 10 are attached.

There are carbon brushes 11 in the carbon brush holders, ' the coil springs enclosed in the carbon brush holders 12 in

10 9844/0374
BAD ORKSiNAL

; »5- PHi ;, 2372.

the longitudinal direction of Ivohlenbüi-BRA ge _o en the collector 7 are pressed oiehe also FIG '. j. On the side facing away from the ivoule brushes, the ύ chrau-fires 12 rest on the support platform, which is merely caused by the opening; connected ivlemu hangers 15 · The latter consist of an electric - £, ut loitendun LL. te rial with resilient properties such as ihosphorbronze, and are equipped with a iieiestigungsmittul in Foru an approach 1 <+ for securing a current supply ouur - provided bfuiirurahtes ^ Vj.. 3 also shows an inwardly bent flag J.0 of the bracket 13, which fixes the spring 12 during assembly and so rests the usually long spring 12 orleiclite-ri., JJie kler-unbÜGel V'j . directly through holes \ '\ and 16 in the Jra ^ plate on the carbon brush holders y _r which are only formed by each -: ines cut off according to Masa and then formed into an ear. In / ig. 1, the bildendenüüntrierun with the support plate a whole ^ snocken 18 and Stoüsnoc: .en λ) dargetätellt which are y serve for guiding the Lohlenbürötenhalter when λ under the relevant bridge duck geacitoben 1, and which prevent DAAs these holders in; ..onta £ ü advance too far. During the küni-age, the l'Lohlenbürstenhalter 9 is guided inwards ϋ uiad conmit then aaf the surfaces 23 and 2 ;; to the «nlaj-.e. The area 2 ^ is lower than the flight; 25, and. to be sure, at such a level that the bridge part 10 is not yet exhausted.

curved viird. If the carbon brush holder 9 is now advanced further, extends uich this lö, ng3 of the surface 21 upwards, the with the Bridge part 10 a whole., .Jildende liocken 2o with the carbon brush holder not in touch, so that the bridge part 10 is sucked out, iiehliess-. borrowed, the roller brush holder glides over the surface when it is pushed .24 up to the stoas cam 19.

jjie rragplattu ο is also with means attached to it

provided, with donen binding of / .Jtatox-apulen connected to other wires unu the embodiment shown in aer the form of soldering lugs

109844/0374
BADORIGfNAU

-6- PHII. 2372.

22 record. The strength and the insulating yigenochaftGn of the support plate thus make a separate assembly strip superfluous.

In the illustrated Ausfflhrungaform uohlenb'irstenhalter all mounted on a single "support plate aiiehtungen in the two to dor almost by the .ragplatte preceding ttbene vertical self-releasing tiusgebilue ι iat to which Z., eck the above with respect to the above-mentioned jfJbene iäeitenwilnde 27 BC ^s i ^ene Fic · 1) of each ^ back part is unciittelbar to the openings 1 / (see Pig. 5) anschiiuasen so that i.otor for each only one single support plate is required, the · v manufactured by injection molding in a two part doctrine / can ground.

The structure described is particularly suitable for mass production and is characterized in that there are only a small number Contains parts that can be easily and cheaply produced ./eisu let it be, while furthermore it is easy to do with the untrained or half-educated

Personnel assembles / can earth. Especially the one! »LasnenirodUit zu As a result, the parts are cheap and simple and also their Montagu simply take place .-. ann, «earth; now largely fulfilled.

The shape and position of the hollow brush holder ensures excellent guidance of this holder, while also: a good transfer of the two operations developed, urn from the carbon brush to the hollow brush holder can be achieved.

109844/0374

BAD ORiGlNAl

Claims (1)

-7- Hffl. 2372. Claims 8 (1. Λ carbon brush structure for .application in a small electric collector machine, especially in a: .r small electric collector motor in an IL-.uahult device, with one or more carbon brushes slidably mounted in tubular metal carbon brush holders, which are can be pushed away in the longitudinal direction of the carbon brush shoulder, the ivory brush holder being attached to a support plate consisting of an injection-molded piece made of a thermal plastic, which is characterized by the fact that the brush holder merely passes through with the support plate -. ■ ■ a whole. forming i3ei'eütigungsmittel are connected to the support plate. 2, carbon brush structure according to claim 1, characterized in that the Ii --- manufacturing means consist of backrest parts that hold the carbon brushes press down resiliently. i ·. Carbon brush structure according to .Jiapruch 1 or 2, characterized "that the ira ^ plate is also provided with centering cams and / or"j'tossno ^ ken that form a gijizea, with the help of which the carbon brush holder can be pushed under the bridge part in question " 4 · carbon brush structure according to one of the preceding claims, characterized ge ~ denotes that the carbon buret holder only goes through after the correct Long sawn off and ent ^ r. tetc pipe pieces are formed » 5. carbon brush structure according to one of claims 1 to 5, characterized in that duss the coal lirsteuhul'-er only from a cut to measure and then to a: tube-shaped metal strip. 6. Internal brush structure according to one of the preceding claims, characterized in that that the feathers on the side facing away from the carbon brushes They rest on releasable clamping brackets that are only connected to the support plate by clamping.
7 »Koi.lenbürstengebilde according to claim 6, characterized in that the 1098 4 4 / "37" BADORIGlNAt ' -O- PHN. 2372. the clamps straight through, the scissors rest in the ira-a- latte on the carbon brush holders. ü, coal bristle structure according to one .. · or more of claims 2 to /, characterized in that all carbon brush holders on a single Support plate attached: jind that in the two to the nearly through the plate going jJjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj of of of which number Purpose of the in_relation to the above-mentioned above sentence each Part of the bridge connects directly to an opening in the iragplatte unaoalieusen. 109844/0374 BAD ORlGiNAL