DK143774B - ELECTRICAL CONNECTION DEVICE FOR AN ENCADED COOLING MACHINE - Google Patents

Description

143774

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to an electrical connection device for a nested refrigerator, in which, in addition to insulated plugs which pass through the canister wall for receiving a plug element, there is arranged a holder which can be connected to ground potential, on which a carrier for connection terminals and / or cable relief devices is placed. .

In a known connection device, the carrier is a frame-shaped insulating piece which surrounds the socket pins and which has on its upper side connection terminals and relief devices. It is held in place by means of a wire hoop attacking the holder. The whole can be uncovered with the help of a protective sheath. The carrier has the advantage that electrical cables can be connected even before the final assembly and can be clamped in the relief device. When the carrier is placed in place, only the connecting wires to the plug terminal of the plug element and to a ground terminal of the holder need be established. As the holder is lacquered together with the capsule, the ground connection terminal consists of a shovel screwed onto the holder. After removing the protective cap, all connection terminals are easily accessible so that repairs can also be carried out quickly.

The object of the invention is to provide an electrical connection device of this kind which, while retaining its advantages, has an even simpler structure and which can be mounted more quickly.

2 1 * 3774

According to the invention, the task is solved by the support having a plate piece on which the grounding clamp is placed in electrically conductive connection thereto, and which is thus secured to the holder by means of a fastening screw, that a conductive between the holder and the plate piece is obtained. connection.

In this construction, there must be neither a special grounding terminal nor a connecting cable between this terminal and the grounding terminal of the carrier on the holder. On the contrary, after attachment, the carrier's earth terminal clamp stands over the carrier's plate in electrically conductive connection with the holder. A secure electrical contact can be established by means of the fastening screw, for example over a thread cut into the holder.

It has been found particularly advantageous when the holder has an outwardly facing groove to which the plate piece can be clamped by means of the fastening screw. When the face of the plate piece is squeezed against the surface of the weld, a sufficiently large stability is obtained to place the assembled support with only one fastening screw.

It is hereby recommended that, between the screw head and the threaded plate portion of the clamping connection, the screw shank, by means of a slot open on one side, engages in the other groove of the clamping connection. The fixing screw 25 can then already be screwed into the holder or plate part already and pushed into the slot at the final assembly. This allows a quick attachment of the carrier.

With particular advantage, the lug at the open end of the slot is obliquely bent in the direction of the screw head, and the screw head 30 partially covers the bend in the clamping position. This results in the screw head receiving a three-point system, namely with a point of its circumference on the non-slotted portion and with two adjacent portions of its circumference on the edges of the slit in the bent portion. This provides an exceptionally secure clamping fastener, whereby fuses to prevent the loosening of the screw, e.g., spring rings, lapse. In addition, the material of the latter two points presses the slit edge edges material into the circumferential edges of the screw head so that a secure electrical connection is obtained between the two parts.

Thereby, the holder does not need mechanical finishing at all. It can also be completely lacquered. For by screwing in the screw, the lacquer layer at the contact point between screw head and wear edges is safely pierced.

In addition, the abutment surface may be joined to the abutment and the slot may have a length which allows the wearer's abutment to abut the abutment. The deflection of the weld becomes a force component with which the carrier is pressed against the impact. In this way, a defined position is obtained by the carrier.

The carrier may further be disposed between the lug and a parallel side wall extending therethrough. This sidewall provides an additional guide or at least prevents the carrier from escaping at excessive loads.

It has proved advantageous if the ground terminal is formed by means of a plate set which is riveted together with the plate piece. By means of this riveting, a secure electrically conductive connection between the earth connection terminal 25 and the plate piece is established.

A particularly simple embodiment is obtained when the plate set in a plate base parallel to the plate piece has a thread for a clamping screw and on both sides rivet joints, and that the plate member in extension of the thread has a free hole and on both sides thereof rivet joints. Furthermore, the plate assembly on the remaining sides may have two opposite rivets

14377A

the connectors bend guide portions, one of which is lighter than the other, and from which there are two roughly parallel grooves extending parallel to the rivet connectors. Therefore, on the plate assembly, a conductor can be clamped to the base surface and two wires clamped to the shovels.

In a further embodiment, an insulating piece carrying the other connecting terminals is attached to the plate piece. The other terminal blocks are therefore insulated from each other and 10 from the ground terminal.

In particular, the plate piece for receiving the ground connection terminal may have an end section interposed between the upper and lower guides of a frame-like projection of the insulating piece which, with bent angles from the outside, interferes with the outer frame frame after being inserted by means of a frame. outer bending cross-section bearing bending groove. Plate and insulating piece are therefore simply pushed into each other and securely joined by bending the bend.

20 With particular advantage, the other connection terminals are arranged in a row with the ground connection terminal and, like this one, consist of plate assemblies which are riveted together with the insulation piece. The individual connection terminals can therefore be obtained by mounting in the same way. So you only need a single type of plate plate 25.

Due to the strength of the material, the insulating piece in the rivet area is preferably greater in thickness than the sheet metal. However, in order to be able to use the same plate fixtures, the insulation layer thickness adapted to rivet joints 30 on both sides may have the plate piece thickness adapted sections.

At the ground terminal the riveting can then be done on the sections.

In practice, it is advantageous if the plate piece is disposed on one side, preferably on the right side, of the socket pins. This provides the most convenient mounting option for a right-handed installer. The fastening screw and clamping screws are also easy to reach.

This is advantageous when the shovels are parallel to each other and are directed upwards. This makes the attachment easier. In the case of an upwards cable, the cable has an already upwardly directed component.

10 Furthermore, the base surfaces of the plate sets can also be inclined on the length of the plate piece. This facilitates the placement of the cable to be clamped to the ground surface.

Next, the shovel pairs of each plate set to reduce their spacing in their foot region may have a double bend. In this way, poles of different polarity get a greater distance from each other, so that the danger of contact is reduced.

The carrier may also carry at least one cable relief device.

This is then conveniently located on the side of the attachment screw opposite to the ground terminal.

This gives a compact construction, in which, however, there is a sufficient distance between the earth terminal and the cable relief device, so that the wires can be placed.

In a preferred embodiment, the plate piece at its end bearing a cable relief device has a section approximately parallel to the capsule wall, on which is placed another cable relief device. In particular, the first-mentioned cable relief device is intended for the power line 30 and the second cable relief device for internal wires. Both cable relief devices are easily accessible with a screwdriver.

6 mm

Furthermore, it is advantageous when the cable relief devices have a lower and an upper plastic part, the lower of which has projections which engage in profiling on the sheet metal, and that at least one clamping screw passes through both parts and can be screwed into a thread in the sheet metal. The clamping screws then simultaneously serve to secure the cable relief device to the plate piece.

Hereby the clamping screw can sit with friction fit in the through-hole of the lower plastic part. Both plastic parts 10 are then temporarily united before each other on the plate piece. However, the friction end does not prevent the fastening of the clamping screw.

In another embodiment, there is provided that part of at least one cable relief device is formed on a lid which can be secured to the plate piece and, together with a sheath, encloses the space element and the connection terminals exhibiting space. Such a lid can therefore also be worn by the sheet metal.

The invention will be explained in more detail below with the aid of examples of embodiments shown in the drawing which are shown in FIG. 1 is a fragmentary view of a spatial representation of the connection device according to the invention; FIG. 2 is a plan view of the carrier of FIG. 1, FIG. 3 is a bottom view of the carrier; FIG. 4 is a section along line 4-4 of FIG. 2, FIG. 5 is a section along line 5-5 of FIG. 2, 7 1 * 3 * 74 fig. 6 is a sectional view taken on line 6-6 of FIG. 2, FIG. 7 is a longitudinal section through the bottle with carrier supported thereon; FIG. 8 is a sectional view taken along line 8-8 of FIG. 2 and 5 FIG. 9 is a sectional view similar to FIG. 8 through a modified embodiment.

In FIG. 1, a section of a capsule 1 of an encapsulated small cooling machine is illustrated, which can be placed on a support by means of a foot. A lead-through 3 with three socket-10 pins 4 serves to connect an electric motor's main winding and auxiliary winding. A holder 5 is welded together with the capsule 1. It has on one side of the socket pins 4 a high bearing wall 6 with a reclining surface 7 and on the other side a support wall 8, spaced in front of a lug 9 15 and an arm 10 with a bent tongue 11. The bag has a slot 12 and bent end section 13.

A carrier 14 has a plate piece 15 and an insulating piece 16 which can be connected therewith. The carrier 14 can be positioned between the support wall 8 and the lug 9 and clamped by attaching a fastening screw 17 which engages a thread of the plate part 15. There are three connection terminals, namely a ground connection terminal 18 on the plate piece 15 and a first insulated one. connection terminal 19 and another isolated terminal terminal 20 on the insulating piece 16.

25 All connection terminals consist of the plate assembly 21, which is riveted together with the associated parts (Figures 5 and 6). Furthermore, two cable relief devices 22 and 23 (Fig. 8) are arranged on the plate piece 15. The overall device is covered by a sheath 24 which is retained by a resilient band 24a as one band engages behind the support 7 and the other band behind the tongue 11.

143774 8

In order to connect the plate piece 15 and the insulation piece 16 with each other, the insulation piece has a frame-like projection 25 having two cross sections 26 and 26a. An end portion 27 of the plate piece, which will later receive the ground terminal 5, is pushed over the frame-like projection 25, thereby passing on the underside of a wall portion 28 as well as on the upper side of the projection 29. Two hooks 30 of the plate piece bent outwardly engage the cross section 26. In this position, a bend lug 31 is bent downwardly so that they can be supported against the cross section 26. Now, plate piece 15 and insulation piece 16 are securely connected to each other (Fig. 4).

On the unit thus formed, in series of three (or more) plate assemblies 21 are turned on. Each plate assembly 21 consists of a base 32 on which two rivet joints 15 33 and 34 are bent downwards. In addition, it has a thread for a clamping screw 35. The other two sides of the base surface 32 have a short upwardly projecting strut 36 and a longer upwardly projecting strut 37. Of these, two shovels 38 and 39 are bent, thereby reducing the distance between them by means of of a bend 20 40. Thus the distance between the neighboring ends of the shovel joints becomes larger. The plate assemblies are mounted in the illustrated inclined position, whereby the rivet connection pieces, by means of corresponding breakthrough 41, engage the insulation piece 16 and 42 respectively in the plate piece 15.

Between these breakthroughs, a hole 43 and 44 are respectively extended at the terminal screw 35 at all times. Rivet connection pieces 33, 34 have a section 45 on which the rivet tool attacks when riveting occurs in the thinner plate piece 15. In the thicker insulating piece 16, on the contrary. For example, the rivet tool attacks the protruding portion 46 of the rivet connector, whereby the breakthrough 41 must also have a corresponding section. Ribs on the insulator 16 increase the creep current stretch.

The support 14 is fastened by clamping on the lug 9 (Fig. 7). For this purpose, the fixing screw 17 is screwed onto the plate piece 15 before the final assembly, thereby providing a distance between the screw head 47 and the plate piece 15. Now that the support is fed so that the screw shaft is inserted 5 into the slot 12, by tightening the screw, the screw shown in FIG. 7 illustrated position. Namely, the screw head is guided on the inclined surface of the bent end portion 13, thereby pushing the plate piece 15 downwardly until it touches an abutment surface 48 of the holder 5. When no further displacement is possible, the screw 17 is deformed negatively, as shown exaggerated in FIG. . 7, whereby it engages at one point below the shaft and at two points above the shaft, namely at the 13 edges of the slot. At the two upper points, an edge of the screw head is crossed with two restriction edges. This leads to a high surface pressure, to push away any paint and any secure electrical connection between the screw and the latch. Furthermore, due to the bias of the screw, an independent solution is excluded.

For fastening of the relief devices 22 and 23, the plate piece 15 on the side of the grounding terminal 18 of the fastening screw 17 has an extension 49 and a corresponding cross-section 50, The relief device 22 consists of a lower part 51 and a upper 52, the relief device 23 consists of a lower part 53 and a top 54. Dis-25 parts comprise insulating plastic. The extension 49 has three holes 55, in which projections 56 of the lower part 51 engage, and two threaded holes 57, in which clamping screws 58 engage. The cross section 50 has an opening 59 in which projections 60 of the lower part 53 engage and a threaded bore 61 into which a clamping screw 62 is screwed. The through holes in the lower parts 51 and 53 are dimensioned such that the clamping screws 58 and 62 are held therein, respectively, by means of friction, for example by supplying a groove in this area which engages the thread. In this way, the relief devices 35 can be immediately assembled and then mounted as a unit on the piece 15. At the tightening of the clamping screws, the corresponding cables are clamped in breakthroughs 63 and 64 respectively.

In the embodiment of FIG. 9, on the other hand, the relief devices 5 22 'and 23' have been insignificantly altered so that a cover 65 covering the front of the jacket 24 is made in one piece with the lower parts 51 'and 53'. You can use the same plate 15 as in the previous figures, but the breakthroughs 55 and 59 can also be lacking. For temporary application of the lid 65, two pins 66 are used. If even further stops are applied, it can be achieved that after the application of the plug, the threaded holes 57 and 61 are positioned closely with respect to the pre-mounted tensioning screws 58 and 62 respectively.

15 When mounting, proceed as follows. The plate piece 15 is joined to the insulating piece 16. Thereafter, the connection terminals 18, 19 and 20 are turned on. Then a mains cable is passed through the connecting device 22, and the individual conductor ends are clamped to the terminal terminals 18, 19, 20. by means of the clamping screws 20 20, the conductor ends retain their direction. Then, while releasing the cable, the relief device 22 can be screwed onto the plate piece 15.

Similarly, a connection cable for internal 25 wires is passed through the relief device 23 and the terminated conductor ends are pushed onto the shovels 39.

After securing the relief device 23 while simultaneously clamping the cable, the conductor ends need only change their direction substantially. Finally, short connecting wires are attached to the socket pins 38. The assembly thus pre-assembled is clamped to the lug 9 in the manner described. Now, only the free ends of the short connecting wires with the connection terminals of the 11 mm on the socket-pins, plugged-in plugs were not shown. Finally, the sheath 24 is fitted and retained with the spring band 24a.

In the event of repairs being necessary, both the connection terminals and the relief devices can be easily reached by the installer.

Claims (22)

143774 1. An electrical connection device for a nested refrigerator, in which, in addition to insulated lead plug pins for receiving a plug element, there is provided a holder which can be connected to an earth potential on which a carrier for connection terminals and / or cable relief devices is placed, characterized in that the carrier (14) has a plate piece (15) on which the ground connection terminal (18) is arranged in electrically conductive connection therewith and which is thus secured to the holder (15) by means of a fastening screw (17), that a conductor connection is formed between the holder and the plate. Electrical connection device according to claim 1, characterized in that the holder (5) has an outwardly extending groove (9) to which the plate piece (15) can be clamped by means of the fastening screw (17). Electrical connection device according to claim 2, characterized in that the screw shaft which is provided between the screw head (47) and the threaded plate part (15) of the clamping connection is gripped by a slot (12) open on one side into the second groove (9) of the clamp connection. Electrical connection device according to claim 3, characterized in that the lug (9) at the open end 25 of the slot (12) is inclinedly bent in the direction of the screw wood (47) and that the screw head in the clamping position partially covers the bend (13). Electrical connection device according to claim 4, characterized in that a stop surface (48) is connected to the lug (9) and the slot (12) has a length which permits the abutment of the carrier (14) against the stop. Electrical connection device according to one of claims 4-5, characterized in that the carrier (14) is arranged between the lug (9) and a parallel wall extending therethrough (8). Electrical connection device according to one of claims 1-6, characterized in that the ground connection terminal (18) is formed by a plate set 10 (21) riveted together with the plate piece (15). Electrical connection device according to claim 7, characterized in that the plate set (21) has a thread for a clamping screw (35) qg on both sides riveted connection pieces (33, in a base surface (32) parallel to the plate piece (15). 34), and that the plate piece in extension of the thread has a free hole (44) and on both sides thereof rivet connection slots (42). Electrical connection device according to claim 7 or 8, characterized in that the plate set (21) on the remaining sides has two opposite guide rivets (36, 37), of which one (37) is longer than the other, on the remaining rivet connection pieces. , and from which there are two rough spokes (38, 39) extending parallel to the rivets (33, 34). Electrical connection device according to one of Claims 1 to 9, characterized in that an insulating piece (16) bearing one of the other connection terminals (19, 20) is attached to the plate piece (15). Electrical connection device according to claim 10, characterized in that the plate piece (15) for receiving the ground connection terminal (18) has an end section (27) which is interposed between upper and lower guides (28, 29) of a frame-like projection (25) of the insulating piece (16) which, with folded angles (30) externally, interferes with the outer frame cross-section (26) and which, after insertion, is locked by a bend (31) which is inwardly facing the outer frame cross-section. ). Electrical connection device according to claim 10 or 11, characterized in that the other connection terminals (19, 20) are arranged in series with the ground terminal terminal (18) and, like this one, consist of plate sets (21) which are riveted together with the insulation piece (16). Electrical connection device according to claim 12, characterized in that in the rivet area, the insulating piece (16) has a greater thickness than the plate piece (15) and that the insulating layer thickness adapted to the rivet connection pieces (33, 34) on both sides have adapted sections thickness. (45). 20 An electrical connection device according to one of claims 1 to 13, characterized in that the plate piece (15) is arranged on one side, preferably on the right side, of the socket pins (4). Electrical connection device according to one of claims 25 to 14, characterized in that the shovels (38, 39) are parallel to each other and are directed obliquely upwards. Electrical connection device according to claim 15, characterized in that the base surfaces (32) of the plate sets (21) 30 are also inclined on the long deployment of the plate piece (15). 143774 Electrical connection device according to claims 9 and 10-16, characterized in that the shovel pairs (38, 39. of each plate set (21) for reducing their spacing in their foot region have a double bend (40). Electrical connection device according to one of claims 1 to 17, characterized in that the plate piece (15) on the side of the fastening screw (17) opposite the ground connection terminal (18) carries at least one cable relief device (22, 23). Electrical connection device according to claim 18, characterized in that the plate piece (15) has on its supporting end a cable relief device (22) a section 15 (50) extending approximately parallel to the capsule wall, on which another cable relief device (23) is arranged. . Electrical connection device according to claim 18 or 19, characterized in that the cable relief devices (22, 23) have a lower and an upper plastic part (51, 52; 53, 54), the lower one of which has a spring (56; 60) which engages in profiling (55; 59. of the plate member (15)) and that at least one clamping screw (58; 62) passes through both and can be screwed into a thread (57; 61) of the plate member. An electrical connection device according to claim 20, characterized in that the clamping screw (58; 62) is provided with friction fit in the through-hole of the lower plastic part (51; 53). An electrical connection device according to one of claims 30 to 21, characterized in that a part of at least one cable relief device (22 ', 23') is provided.