DE7507518U - Rotary potentiometer - Google Patents

Description

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Licentia Patent-Verwaltungs-GmbH 6000 Frankfurt / Main 70, Theodor-Stern-Kai 1

II 75/4 6 3.1375 - PT-N-Hs / rh

Rotary potentiometer

The present innovation relates to a rotary potentiometer, consisting of one with a resistance layer Carrier plate, one of two nestable on support edges and with each other "snap-on housing parts and a pin of an iiotjrs carrying the pick-up spring a bore of the one housing part protrudes.

Such a potentiometer is known, for example, from the DT-GH 1 38 2 4-87- Here all solder connections are on the carrier plate attached to the resistance layer and protrude downwards out of the housing. This version is suitable for -Linbau in printed circuits.

Especially for potentiometers that are used for cooking voltage purposes, e.g. as a focus regulator of a television picture tube, it is desirable to provide flexible connections on the potentiometer. This requires a good fastening of the carrier plate ur.d the flexible connections.

The present innovation is therefore concerned with the probloia, to fix the carrier plate ir. housing and flexible for '"ic -to ensure strain relief.

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Line of the jc-housing halves at least in one of the same j eiü-sn ili;: i "Dlcn ^ nachlu ^ a recess open to the other housing part or a pressure surface or edge is provided and arranged in such a way that the connecting slider is above the carrier plate in the u-ehäuse protrudes and is soldered there with a solder connection on the C3x carrier plate and when the housing parts are locked the flexible connection of the other housing part can be pressed into the recess or against the pressure surface or edge Strain relief of the flexible connection or connections is achieved and the relatively rigid connection of the 3-wire connection to the carrier plate fixes the latter in its position.

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Further advantageous details of the innovation are given below on the basis of an exemplary embodiment illustrated in the drawing described.

Fig. 1 shows the perspective bottom view of the upper part of the housing,

2 shows a wiper spring rotor,

3 shows a perspective top view of the lower part of the housing,

Fig. 4 is a view of the side on which the flexible connections are provided, *

5 shows the view of the side opposite this.

With 1, for example, a box-shaped upper housing part is designated, the Cover 2 is provided with an inwardly protruding ring sector 3, which is used for supporting a protruding through the cover 2 Rotor pin 4 of a rotor 6 carrying the wiper spring 5 is used. The rotor pin 4 is on the front with a screwdriver slot Mistake.

At the open base of the ring sector 3, a tab 7 is provided on the ceiling 2, the surface of which extends axially parallel. It is attached to a cut-free web 9 through slots 3 and is designed to be resilient by manufacturing the upper housing part 1 from an elastically deformable material, for example plastic. The distance of the surface from the center point of the ring sector is slightly smaller than its radius, so that J> when the rotor pin 4 is inserted, the tab is elastically pushed away to the side. Due to the pressure generated in this way, the rotor pin 4 is mounted in the ring sector 3 in a slightly braked manner.

On the front wall 10 of the upper housing part 1 are left and right pairs of locking fingers 11, 12 with inwardly protruding Latching lugs 13 are provided, between which a pressure block 14 is arranged is. Furthermore, there is a cutout 15 in the middle at the top provided and the edge 16 of the front wall 10 partially offset in the manner of a 3'alzes.

The rear wall 17 is provided with a slot 18 extending up to the ceiling 2, on both sides of which there is a rectangular latching opening 19 is arranged. The edge 20 of the rear wall 17 and the side walls 21 are again at least partially fold-like offset, the outer sides 22 tapering conically towards the edge 20 run up.

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The lower housing part 23 is also box-shaped auo ;;? il ¹ - t. The bottom is formed by a support plate 24, which is on .1,1 - speaking support edges, not shown, on the ^1. , And on which the potentiometer resistance track 25, against all Vorv-idorstands 26, soldered connections 27 and a slider tap 2ö are applied. The carrier plate 24 is preferably composed of; i.prnr.ik and the resistance layers 25, 26, solder connection *. 27 and the grinder tap 28 are advantageously applied according to a method known in c .jd of the grinder tap 28 with a protective coating, zr>. 3ine: r protective varnish, covered.

The front wall 29 is interrupted in the middle. There i. ^ T ei ^r : locking finger 30 is provided, which can interact with the opening 15 of the upper part 1. Left and right of it ict i :. In the area of the dividing line between the upper part of the housing 1 and the lower part of the housing 23, a pressure support surface designed as a semi-cylindrical shell ⁷ I is attached for each flexible connection;> 2. Latching flanges 31 are arranged on both sides of the lock 3I, which can produce a latching connection with the latching lugs 13 of the latching fingers 11, 12. The conductors 3 ^ of the connections 32 can lie above the carrier plate 24 over the corresponding solder connections 27 and are soldered to them. As a result, the carrier plate 24 is fixed in its position. The printing blocks 14 of upper case 1 are appropriate since J> them when '/ er · - rest of the housing parts 1, 25 into each other push the connector from 3 ² into its shell 3I and hence these secure strain relief. "^ in bending and / or torque acting on the connections 32 outside is therefore not transmitted to the solder connection ^ with the carrier plate 24-.

On the rear wall 35 of the lower housing part 23 are two locking fingers 36 attached, which can engage in the latching openings 19 of the upper housing part 1. The back wall is also with a or several solder pins 37 penetrated, which are used to connect the potentiometer track 25 or a series resistor 26 or only for mounting in a printed circuit board and for

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Claims (1)

Protection claims: 1. Rotary potentiometer, consisting of a support plate provided with the resistance layer, which rests on the support edges of one of two housing parts that can be plugged into one another and can be locked to one another, and a pivot of a rotor carrying the pick-up spring protrudes through a bore in the housing part, characterized in that there are in the area the dividing line of the housing halves (1, 23) at least in one of them a recess (31) open towards the other housing part (1 or 23) or a pressure surface or edge (14) is provided and arranged for each flexible connection (32) is, öai the connection conductor (34) protrudes above the carrier plate (24) into the housing (1, 23) and there nit a Lötanschluii (27) is soldered on the carrier plate (24) and when the housing parts (l, 23) are locked flexible connection (32) can be pressed from the other housing part (l, 23) into the recess (31) or against the pressure surface or edge (14). 2. Drehpccentiometer according to claim 1, characterized in that ^ the recess (31) is formed by a semi-cylindrical shell. 3. Rotary potentiometer according to claim 1 or?., Characterized in that locking flanges (33) are provided in the region of the recess (31) which interact with locking fingers (11, 12) of the other housing part (1 or 23) and are locked in place State can exert a pressure on the connection (32). 4. Rotary potentiometer according to claim 3, characterized because the connection (32) ά between two self-locking flanges (33) and two latching fingers (11, 12) is provided. 5. Rotary potentiometer according to claim 1 or the following, characterized in that the locking fingers (11, 12) and the locking flanges (33) are provided in addition to one or more housing rotations (15, 30 and / or 19; 36). 6. Rotary potentiometer according to at least one of claims 1 to 5, characterized in that one or more or all of the (10, 17, 21; 29, 35) or wall parts of the housing parts (1, 23) can be nested in a box, d. 7507518 io.O7.75 - Γ, - I 7 · Rotary potentiometer according to claim S, cadurcii gekennzr-ic ^ ri ^ t, da-i the adjacent wall seldom r / j the i-anten: .ir; are tapered. S. Rotary potentioseter after sur: in-tet a ::, der nncr ^ - '. Xhe 1 \ -. Lz ". ·', Characterized by dr-.j in an 'other'.Varr" (-. ^^ sls d: rjenirren (29), the for div; connections ( ^T 2) vo: '- esehei: i .-- :, L "tsnschluistifte (Γ7) attached: -.-, in". 9- Rotary ^ otenticraeter after Ans-. ^ U 2h j :. - "r'jrc: = ekennzei: · ...: ·: 't, ■>. dar inwardly raring ^ eil.-er Lbta.-iichlu ^ :: ti:" ¹ : ..: (; "/ - / .: er: -.-. :: lv of the carrier plate (2 ^) ends -jr / ':. \ it Solder connections (27) of the same can be soldered. 10. Drelipotentioiüeter according to at least one of claims 1 to), characterized in that a bearing for a rotor pin ( ^z 0 of a grinder rotor (C. elastically deflectable, with inserted Hotorzapfen (■ -) ;; e ~ en this resiliently adjacent tab (7) is arranged. 11. Drehpotentioiaeter according to claim IC, characterized in that the tab (7) is provided on a cut-free 5th, - (}). 12. Rotary potentiometer according to claim 10 or 11, da- ^: 'Jirch r :: ek3niizeichnet, since J the bearing consists of a ::, ring sector ( ^r ). 7507518 io.i7.75