SE450011B - CONNECTOR FOR A SOFTWARE IN AUTOMATIC Washing Machines - Google Patents

Description

15 20 25 30 35 40 'with two, three or four levels. 450 011 2 nings. Fig. 1 shows a plan view of a commutation module, Fig. 2 an axial section through the same module; Fig. 3 is an exterior view of a module on the output side of the connecting pins, Fig. a perspective view of a first embodiment of the connecting band according to the invention, Figs. a simplified plan view of the band in Fig. 5, Fig. 2 a perspective view of a second embodiment of the connecting band according to the invention and Figs. a perspective view of a blade included in a group for the software according to the invention - a connection commutation pin. §Ig_g shows different possible commutation combinations with four commutation blades, as on-. acted by one or two follower arms 1 abutting against cams As shown in Fig. 1, a module consists of a housing 21, which is molded from insulating plastic material. A circular opening 21a is provided in the bottom of the housing, which is large enough to accommodate composite cams 22. The edge 21b of the housing - (Fig. 3) has recesses, the bottom 211 of which is semi-cylindrical for receiving cylindrical pins 30, on which commutation - blades 1, 2, 3 etc are attached. These pin-blade units (Fig. 8) are held in place by partly recesses 212 in the subsequent module, arranged in projections which connect to the recesses 215 of the module, and partly by the projections Z13a and 213b of the housing. In addition, gutters 214 with a salmon tail profile make it possible to hold metal rods 32 in place, to which by soldering or upsetting other pins 31 are attached, which are insulated from the commutating devices. The pins 30, 31 have their free ends 30a, 31a rounded and are long enough to permeate the space delimited by a lid 26 of sufficient height to accommodate at least two movable connecting bands 40, 40 'one above the other. It is in this space that the bridges required for the realization of the diagrams corresponding to different constructors are achieved. The placement of the bands on at least two levels allows the crossing of conductors. These strips are pre-cut from a strip of beryllium bronze or cold-hammered brass with a high copper content. For example, this strip may have a thickness of 0.25 mm and a width of 4 or 5 mm.

The pins 30, 31 are located on the same side of the software and project outside the cover 26 to enable the outer connections of the binders by means of conventional connectors 400.

These strips of suitable, conductive and elastic material have different lengths and shapes depending on the pins to be bridged. They are kid an embodiment insulated by a soft tube 41 of insulating material »The ends of the straps are rolled in the form of a cylinder or ring 40a, the diameter of which corresponds to the diameter of the pins with an elastic tightening of a few tens of millimeters, To obtain sufficient elasticity is the short bridges made with a strap which has one or two pre-bends 40b so that the strap can easily adapt to the pin distances. The cutting and bending of the belts can be easily accomplished by automatic devices for large series productions. The advantage of the insulated belts is that their placement on the edge allows, for example, the accommodating of three belts side by side between two cylindrical pins with a mutual distance of 6 mm. Finally, the cylindrical shape 40a is far less bulky than a sleeve pin for flat pins and ensures good electrical connection with the pins. Alternatively (Fig. 7), the bridges can be provided by means of electrically conductive commercial wire pieces 43, at the ends of which, by soldering, for example with tin, the outer part of pipe pieces 42 is fastened, which are rolled in similar material as the strips 40.

The commutation devices are of the type elastic metal blades with placement over each other in order to be able to cooperate with each other and whose relative positions allow the establishment or breaking of electrical connections according to the profile of one or more program chambers, which are caused to rotate by drive means not shown. With respect to the software shown in the figures, the blades 11 (Fig. 8), for example of beryllium bronze, are soldered to the end 30a of the pins 30 by soldering, which form the connecting means, each module 21 of the software being one or two groups of each four leaves 1, 2, 3, 4 and 9, 10, 11, 12 arranged. Some of these, which are longer, are actuated by means of follower arms 23, 24, 25 as a function of the profiles 22a, 22b and 22c of three distinct program cams. Fixed abutments 210a, 210b, 210c ... limit their displacement to provide, in certain configurations, the opening or closing of electrical follower arm 23 contacts 10 and minimal contact pressures.

Depending on the leaf or leaves; which are in motion, and depending on the position of the fixed stops arranged in the bottom of the module 21, a plurality of electrical combinations are obtained, as shown in Fig. 9. according to the positions A, B, C or D of a contact with the profile of a cam 22a with the following electrical connections: high cam level: simultaneous closing of contacts 1, 2 and 3. first intermediate level; closing contacts 2 and 3.

Thus, four levels can be obtained in position A (Fig. 9A).

II I! Position B (Fig. 9B) Position C (Fig. 9G) ll second intermediate level; all contacts are open.i II Position D (Fig. 9D) low cam level; closure of the contacts' own.

In this configuration it is the blade 3 which is longer than the others and follows the movements of the arm 23., the blades 1 and 2 being limited in their movement by two fixed stops 210a, 210b, and the blade 4 being held in fixed abutment against a stop 210, so? unless it is done rigidly.

If the arm 23 has two pins 23a and 23b, against which two blades 6 and 7, respectively, abut, and if only the blade 5 is limited in its path by a stop 210c, when the arm 23 follows a cam 22b with three levels, the following electrical connections: Position E (Fig. 9E) high cam level; closing contacts 5 'L and 6.

Position F (Fig. 9F) = average level of the ridge; all contacts * are open.

Position G (Fig. 9G) low cam level; closing contacts 7 and 8.

Another combination possibility, starting from four blades 9, 10, 11 and 12, consists in allowing the blade 10 to make contact with a follower arm 24 against the profile of a cam 22c with three levels, and the blade 12 to make contact with a second follower arm 25 against the profile of a second cam 22d with two levels, the shorter blades 9 and 11 being limited in their movement by two fixed stops 210d and 210e.

This gives the following electrical combinations: Position Position -Position Position s 1 Position Position H (fig 9H) I (fig si) J (fig19J) ~ K ïfíg Qrj L (fig 9L) M (fig 9M) 450 Û11: Arms 24 and 25 at a low level; fäø / * fïsz f f “: '“ fï? \ ”“ äf ". arm 24 on contacts 10-11 closed.

Arm 25 at low level,: arm 24 at intermediate level; all contacts open.

Arm 25 at high level, intermediate level; 11-12 closed. low level, high level; 9-10 closed. high level, high level; 9-10 and 11-12 closed. "High level, low level; 10-11-12 closed. Contacts Arm 25 on arm 24 on contacts Arm 25 on arm 24 on contacts Arm 25 on arm 24 on contacts If it is finally the leaves 14 and 15, which are longer for '10 to abut against the two follower arms 26 and 27, respectively, on two program combs 22c and 22d with three levels, the blade 13 being limited in its movement by a stop 210c and the blade 16 being rigid or fixed abutment against a stop 210, the following electrical combinations are obtained, as shown 15 Position Position Position Position 20 Position Position Position in Fig. 9N- 9T: (Arm 26 N) arm 27 Qclosed 26 26 (Arm O _arm ("open).

(Arm 26 P arm 27 closed.

Arm 26 Q closed.

(Arm 26 R) Arm 27 closed.

Arm 26 S) Arm 27 (closed.

Armen 26 T) armen 27 15-16 closed. arm 27 on on on on on on on on on on on on at on medium level, low level; contacts 15-16 intermediate level, intermediate level; all contacts low level, _ medium level, contacts 14-15 medium level, high level; contacts 13-14-15 high level, A medium level; contacts 13-14 low level, low level; contacts 14-15-16 high level, low level; contacts 13-14 and The arrangement according to the invention makes it possible to provide software for automatic washing machines with 450011 small space requirements, a large number of electrics between pins. reduced costs and the possibility of risky combinations and bridges m;

Claims (8)

450 011 Eatentkrav Coupling device for a software part of automatic washing machines where drive means are arranged for rotating at least one set of cams (22) acting on commutation devices mounted in modules (21) provided with metallic pins arranged on the same side of the software, which pins have first projecting parts (1-4, 9-12) for connection to contacts (2010a-e) of a matched electrical connector, wherein some of said first parts comprise a portion for connection to the commutation devices, and a number of connecting means (40,40 ') comprising an electrically conductive part (40a) adapted to be removably attached to a second part (30,30a, 31,31a) of at least two of said pins to thereby form a bridging electrical connection between the pins, k characterized in that said second part (30,30a, 31,31a) of the pins has a circular cross-section and of sufficient length to allow simultaneous attachment of at least two removable connections binding means (40, 40 '), and that these means consist of metal strips (40), which comprise at least one pre-bend (40b) and whose end parts (40a, 42) are rolled in a loop in order to be able to be applied to the pins with elastic tightening ( 30,31a) to be bridged. Z. Coupling device according to claim 1, characterized in that the bands (40) inside the loop (40a) are coated (41) with an insulating material, and are made of beryllium bronze or cold-hammered brass with a high copper content. Coupling device according to claim 1, characterized in that each of said removable means consists of two tubes (42) of rolled metal strips, which are interconnected by a conductive tree (43), which is attached to an outer portion of the bath tubes. l Coupling device according to one of the preceding claims, characterized in that the pins (31) are insulated from the commutation devices and are fastened to rods (32), which are retained in salmon tail gutters. Coupling device according to one of the preceding claims, characterized in that in one and the same commutation module at least four blades (1,2,3 and 4) are placed one above the other for mutual interaction, an inner blade (3) being longer than the others to abut against a follower arm (23), which follows 450 011 in the profile with four levels on a cam (22a), and two (1) and (2) of the other three blades to their movements are limited by stop (210a) and (210b) respectively. '' Coupling device according to one of Claims 1 to 4, characterized in that in one and the same commutation module at least four blades (5,6,7,8) are placed one above the other in mutual interaction, wherein two inner blades (6, 7) is longer than the other and can abut each of two pins (Z3a-23b) on a follower arm (23), which follows the profile of a cam (22b) with three levels, and one (5) of the two other leaves are bounded in their path by a stop (210c). Coupling device according to one of Claims 1 to 4, characterized in that in one and the same commutation module at least four blades (9-10-11-12) are placed one above the other for mutual interaction, a first blade (10) abuts a first follower arm (24) which follows the profile of a first cam (22c) with three levels, a second blade (12) abuts a second follower arm (25) which follows the profile of a second cam (22d) with two levels, and the other two blades (10 and 11) are limited in their movements by two fixed stops (210d-210e). Coupling device according to one of Claims 1 to 4, characterized in that in one and the same commutation module at least four blades (13, 14, 15, 16) are placed one above the other for mutual interaction, a first blade (14 ) abuts a first follower arm (26) of a three-level cam (22), a second blade (15) abuts a second follower arm (27) of a second cam (23d) of three levels, and a third blade (13 ) to its movement is limited by an appropriation (210c). 4) an,