JPS6176007A - Device for introducing flat type cable - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for introducing flat cables into walls, casing walls, etc., in particular into plug connector casings.

The cable entry must be carried out in such a way that the cable can withstand tensile loads, in order to prevent the cable from being pulled out of the plug-in connector casing or the cable entry device, as the case may be, and to avoid introducing unacceptable tensile loads at the conductor connection point. It must be held sufficiently securely so that the cable is not damaged by the loading of bending forces.

Cable introduction devices with devices for compensating tension loads are generally known for cables of circular cross section. The cable is then fixed in the round cable passage by means of a ring-shaped elastic sealing element or clamping element by means of a so-called stuffing screw mechanism. In this case, the sealing element is compressed by one of the threadable parts, and at this time the inner diameter of the seal element is reduced and pressed firmly against the outer circumference of the cable passing through it. In this case, on the one hand, the cable is held immovably in the cable entry and, on the other hand, the cable entry is sealed against external influences such as dust and moisture. Such stuffing box screw mechanisms are however unsuitable for flat flat cables due to the geometry and dimensions of the flat cable. It is therefore an object of the present invention to provide a cable that is compatible with the dimensions (width and thickness) of a flat cable, that is sufficiently protected against the ingress of foreign objects, and that holds the cable reliably against tensile loads. To provide a cable introducing device for a flat cable, which does not cause damage to the introduced cable even when a cable bending force is applied.

This problem can be solved according to the invention by providing a cable introduction device of the type mentioned in the introduction, which has a frame-shaped holding part, the core holding parts have struts arranged on opposite sides, and The bottom of the holding part has a cable passage hole facing into the casing interior, and a concave molded part is formed in the holding part, and the concave molded part is on the edge thereof, and has a hole for an elastic chisel to be inserted. It has supporting shoulders and
ξ Tsuki / has a through hole corresponding to the cross-sectional shape of the flat cable, and the tensile load compensating curved piece can be connected to the support of the holding part with screws while holding the flat cable therebetween. It is solved by this.

According to the invention, a flat cable introduction device is provided which has a sealing effect as well as compensation for tensile loads, which flat cable introduction device is adapted to the cross-sectional shape of the flat cable and which has a sealing effect. Extremely small lateral dimensions.

Such a cable entry device can be used advantageously for thin, rectangular plug-in housings or housing interiors in general. Such a cable introduction device can be used particularly advantageously for the connection of electrically conductive cables of moving machines, such as, for example, trolleys or the like.

According to the embodiment described in claim 8 or 9, the cable introduction device is not only used for introducing a single cable into a tank, but also for introducing a plurality of flat cables parallel to each other. It can also be used for superimposed introduction.

The embodiment according to claim 9 is particularly advantageous from the point of view of manufacturing and storage costs. This is because for any cable structure or number of cables, a single cable entry device with correspondingly sized cable passage holes can be used. In this case, the cost-effective ・ξ
The use of a push plate in conjunction with a pressure plate allows the cable entry device to be adapted to the cable geometry used.

The invention will now be explained with reference to the illustrated embodiment.

The flat cable introduction device with a tensile load compensator shown in FIGS. 1 and 2 mainly consists of a frame-shaped holder 1, .xi./2. It consists of a pressure plate 3 and a tensile load compensating curved hand, 5.

The holding part 1 is provided on the plug connector casing 6,
It is fixed to the casing 6 by screws 7, also over the through hole δ for introducing the flat cable 9.

An elastic ξtsuki/2 is inserted into the holding part 1, and in this case, the packing 2 is attached to the support shoulder 1 provided at the bottom of the holding part.
0 and is laterally surrounded by the side part 11 of the holding part, and closely surrounds the flat cable 9. A pressure plate 3 is provided on the cover/2, which is screwed to the holding part by means of screws 12 and is secured to the base by means of annular projecting edges 1 and 3. It is pressed against Tsukin 2.

The holding part 1 furthermore has two vertical lateral struts 14, on which are attached tensile load compensating curved arms, 5. For this purpose, one of the two curved pieces has a screw hole, and the column and the other curved piece each have a through hole for passing a screw 15.

When both curved pieces are screwed together, the flat cable 9 is tightened between these two curved pieces and held securely. In order to obtain good tightening, the curved arm has one rib 16 extending at right angles to the cable, and the curved piece 5 has two ribs 17 spaced apart from each other.

The ribs are provided with appropriate rounding to prevent damage to the cable; in this case, the outwardly facing edge 18 of the curved arm is also rounded to ensure that the cable remains intact even under bending loads. damage is prevented.

The assembly of the cable introduction device of the present invention is as follows.

First, the holding part 1 is screwed onto the plug connector casing 6. In this case, it is also possible to provide an annular groove 24 on the lower surface of the holding part and insert the packing ring 19 into this groove, in which case the inside of the casing can be sealed against foreign objects and moisture. Next, the packing 2 is inserted into the holding part 1, and the flat cable 9 is introduced through the through hole 28 of the packing 2. The pressure plate 3, which has been previously fitted onto the flat cable, is then connected to the holding part 1 with screws. At this time, the protruding edge 13 of the pressure plate presses the packing, and the packing 2 is deformed laterally by the surrounding side part 11 of the holding part and cannot escape (the cable itself may not be able to escape). This causes the packing to press immovably around the flat cable.

As a result, the cable entry point is completely sealed against intruding foreign matter or moisture.Subsequently, the tensile load compensating curved pieces Φ, 5 are positioned and screwed together.At this time, both cylindrical bent pieces The flat cable introduced between the two is fixedly clamped and held, and the curved piece is at the same time fixedly connected to the support of the holding part.

The flat cable introduction device obtained in this way provides, on the one hand, satisfactory tensile load compensation for the introduced flat cable and, on the other hand, against dust, moisture, etc. A sufficient sealing inside the casing is achieved.

The flat cable entry device according to the invention can be used on all flat casing surfaces or walls. K due to the flat cable itself (width/thickness) which varies over a large range
, correspondingly different through-hole packings and pressure plates can be provided, adapted to the cables used in each case.

It is also possible to introduce two or even more flat cables one above the other into the cable introduction device, and in this case too, the packing and pressure A plate can be used, and by pressing the seal against the outer cable and causing the cables themselves to be pressed together, a hermetic seal at the cable entry point is again obtained in this case.

For flat cable entry systems in which no special requirements are placed on the sealing of the casing interior, i.e. it only needs to be sealed against coarse contaminants and does not need to be sealed against moisture, a pressure plate may be used. This can be omitted, and the thickness of the packing can be such that it extends somewhat beyond the sides 11 of the holding part. In this case, however, the tensile load-compensating bending piece is manufactured in such a way that its underside presses against the seal when the bending piece is screwed onto the support column of the holding part.

In this case, it is also possible to provide the underside of the curved piece with a strip-shaped profile similar to the protruding edge 13 of the pressure plate.

In order to understand the construction of the different parts of the flat cable introduction device and their interaction with each other, these parts are shown separately in FIGS. 3 to 8. These will be explained below.

FIG. 3 shows a plug-in connector housing 6, which has on its upper side a rectangular opening 8 for passing the cable to be introduced. A through hole 20 for fixing the holding part 1 with a screw is provided next to the through hole 8.

The illustrated plug-in casing is otherwise similar to known commercially available casings into which a plug-in connector (not shown) can be inserted from below.

FIG. 4 shows the holding part 1 from different directions. The holding part 1 mainly consists of a frame-shaped base part 21, which has one post 14 on each of the two sides facing each other. The base part 21 has a rectangular concave profile 22 in this case, on which the sides 11 of the holding part 1 are formed. A rectangular cable passage hole 23 for the flat cable to be introduced is provided at the bottom of the molding. This cable passage hole 23 is located in the concave molded part 2.
It has a width smaller than the internal width of the seal 2, so that a support shoulder 10 for the receptacle of the seal 2, which will be inserted later, is formed here. An annular groove 24 is formed on the lower surface of the holding part, into which the .xi. ring 19 can be inserted, as already mentioned. The strut 14 has a hole 25 in its upper region, which hole 25 serves for mounting the tensile load compensating bend 4.5. A screw hole 26 is provided for fixing the holding part 1 to the plug connector casing 6 or to a wall surface.
is provided. A screw hole 27 provided on the upper surface of the frame-shaped holding part 10 is a screw hole for attaching the pressure plate 3.

The packing 2 is shown in FIG. This packing 2
is made of an elastic material, for example Mohs rubber. The outer dimensions correspond to the dimensions of the recess 220 of the holding part, and the thickness of the seal is approximately equal to the depth of this recess. The thickness of the packing must be chosen at least such that when the packing is compressed by the pressure plate, there is sufficient packing material to "flow" across the packing. Furthermore, the packing has a rectangular center hole 28, the dimensions of which (length and width) are determined according to those of the flat cable used.

FIG. 6 shows the structure of the pressure plate 3. The pressure plate 3 essentially consists of a flat, rectangular, shaped plate adapted to the external dimensions of the holding part, in this case lateral slits 29.
are provided for receiving the support posts 14 of the holding part.

The pressure plate 3 also has a rectangular cable passage hole 30 adapted for the flat cable to be inserted.

The cable passage hole 30 is surrounded on its periphery by a raised edge 13 which is pressed onto the seal 2 when the flat cable entry device is assembled. The holes 31 are provided for fixing the pressure plate 3 to the holding part.

Finally, FIGS. 7 and 8 show a tensile load compensating curved one hand;
5 is shown. As already mentioned, these curved arms, 5, are screwed together with the flat cable in between.

In order to obtain a good clamping force, the curved hand with bending rigidity has a lip 16 extending laterally;
The curved piece 5, which is also bendingly rigid, has two mutually spaced lips 17. The curved piece is attached to the end of the supporting column 14 of the holding part.
It has holes 32 and 33 for screwing in the state where it is inserted, and in this case, one of the curved pieces has a through hole 33,
Further, a screw hole 32 is provided in the other curved piece.

In order to avoid damaging the cable, the edges of the lip and the bending piece itself that contact the cable are rounded and chamfered.

Of course, it is also possible to manufacture one of the two cylindrical curved pieces integrally with the support column of the holding part 1.

A further embodiment of the plug connector casing 101 is shown in FIGS. 9-11. A frame-shaped holding part 102 is provided on the upper side of the casing, which is manufactured in one piece with the casing. This housing with a holding part is made of metal or plastic and is preferably produced by die-casting or injection molding.In the holding part an approximately rectangular recess 103 is molded, on the bottom side of which a recess 103 is formed. is formed with a rectangular cable passage hole 1Q4, which communicates with the inner chamber of the casing.The dimensions of this cable passage hole 10 are smaller than the notch 103, so that this cable passage hole The periphery of the hole 104 is formed with a shoulder that surrounds the hole.Upright posts 106 are formed on the two mutually opposite sides of the holding part.
A tensile load compensating curved piece, which will be described later, is attached to the column. A suitable hole 107 for this purpose
is installed on the pillar. Furthermore, there are 10 screw holes in the holding part.
8, the screw holes are for fixing the pressure plate, which will also be described later. A plug connector, not shown, is inserted into the casing from the side of the casing opposite the holding part.

FIGS. 12 and 13 then show how the flat cable 109 is introduced into the housing 101 and is held and secured in a tensile load-compensated manner. A packing 110 made of an elastic material such as soft rubber or Morse rubber is inserted into the notch 1'03 of the holding portion 102. The outer dimensions of the packing correspond to the dimensions of the notch 1030, and the rectangular central slit 12 corresponds to the cross-sectional shape of the flat cable.
It has 2. One pressure plate 11 (9, 111') made of a bending-rigid material, for example a steel plate, is arranged on the upper and lower sides of the packing. 103 and has a hole in the center, which has dimensions corresponding to the cross-sectional dimensions of the flat cable 109 to be introduced. l-122
The pressure plate 112 is inserted through the hole 128 of the pressure plate 11 (9, 111') and into the casing through the cable passage hole 104. The pressure plate 112 is passed over the cable and the screw 113 screwed into the hole 108.
The holding part π is screwed down.

In this case, the annular raised edge 114 of the pressure plate 112 is pressed onto the upper pressure plate 111, and the seal is compressed in this case. Surrounds the packing of the holding part from the outside of the side.
Since the sides 115 of the retainer prevent the packing from escaping outwards, it attempts to escape inwardly towards the cable.

In this case the seal is pressed firmly against the flat cable from all sides. In this case, the lower pressing plate 111'
is placed on the edge of the holding part (supporting shoulder 105) and the elastic packing is therefore arranged in a cable passage hole 1 which is advantageously designed to be large for the introduction of a plurality of parallel flat cables.
The extraction is prevented from passing through the zero hole. Overall, a cable entry device constructed in this manner provides an excellent seal against intruding foreign objects and moisture.

Furthermore, two tensile load compensating curved pieces 116 and 117 are provided, which are screwed to the support column 106 with the flat cable sandwiched between them. For this purpose, one of the two curved pieces has a screw hole, and the other curved piece and the support each have a through hole for passing the screw 118.

When the two curved pieces are tightened together, the flat cable is clamped between these curved pieces and held securely.

For good tightening effect, the bending piece 116 has a rib 119 extending transversely to the cable, and the bending piece 117 has two ribs 120 spaced apart from each other. . When both curved pieces are tightened together, the rib 119 of the curved piece 116 is connected to the rib 120 of the curved piece 1170.
Directed to the center between. The edges of the ribs are correspondingly rounded (chamfered) to prevent damage to the cable, in this case also the outwardly facing edge 121 of the curved piece when the cable is bent and comes into contact with said edge 121. Round beveled to prevent damage to the cable when

The flat cable entry device according to the invention is not only used for plug-in connector housings, which are each manufactured to a predetermined cable size. In this case, different packings and pressure plates are used which have cable passage holes 104 in the holding part which are made according to the cable cross-section and slots designed with corresponding dimensions. In such a casing adapted to the respective cable cross-section, there is no need, in particular, for the pressure plate 11 (9, 11') to be provided. This is because a satisfactory sealing effect can be achieved even without a pressure plate.

In order to be widely used in plug-in connector casings, it is advantageous to have a 'y-pull AL, hole 104 in the retainer and in the casing, as shown in FIGS. 9-13.
The dimensions of the cables are designed to accommodate the maximum number of flat cables that can be installed one on top of the other.

Such a configuration is shown in Figure 13A. In this case three flat 'y--7-/l/109.109', 1
09〃 has been introduced and is being held and fixed. If the maximum number of cables is to be introduced and used in a casing with a cable perforation 104 designed for the maximum number of flat cables, it is necessary to insert a pressing plate. There is no. This is because in this case the pressure plates cannot escape from the through-hole even if the pressure plates are not present, and a perfect sealing of the cable entry device is achieved. The cables are pressed tightly together.

If a flat cable introduction device is used for a smaller number of cables or for cables with a lower thickness, the pressing plate 11 (9, Ill'), as already mentioned,
It can be inserted and used and provides a more perfect seal.

The advantage of this embodiment is that a standard casing can be used, in which case for different numbers of cables or cable sizes, cost-effective stamping sheets differing only in the dimension of the holes 1280. It can be adapted by using and.

No special requirements are placed on the sealing of the interior of the caning.
In other words, for flat cable introduction devices that only require sealing against contaminants and not even moisture, the pressure plate can be omitted and the thickness of the packing can be maintained. side part 15
The thickness may be such that it protrudes somewhat from the surface. However, in this case, the tensile load compensating curved piece must be configured such that its lower surface is pressed onto the packing when both cylindrical curved pieces are screwed to the support of the holding part. In this case, the underside of the curved piece can additionally be provided with a strip-shaped profile, similar to the raised edge of the pressure plate. In order to understand the structure of the packing 110, the pressure plates 111, 111', and the pressure plate 112 and their mutual effects, these members will be explained first.
They are individually illustrated in FIGS. 4 to 16, and will be briefly described below.

In this case, the tensile load compensating curved pieces 116, 117 are of the same construction as in FIGS. 7 and 8.

The packing 110 is shown in FIGS. 14A and 148. The seal 110 is made of an elastic material, preferably soft rubber.The outer dimensions are designed in this case in accordance with the dimensions of the recess 103 of the holding part, and the thickness of the seal corresponds to this recess. Almost equal to the depth of the notch 103.-
The thickness of the ξ packing must be at least thick enough to allow sufficient packing material to "flow" across the ξ packing when the packing is compressed by the pressure plate. Furthermore, the S-no-kin has a rectangular hole in the center (
The length and width of the cable are designed to correspond to the flat cable used, and in some cases it can be designed to the size shown by the chain line. can.

15A and 15B show the pressing thin plates 11 (9, 11
1' configuration is shown, which is shown in Figure 1, Figure 14B.
It has a shape approximately equal to that of the packing shown in the figure, but is made from a thinner (and more bendingly rigid) material.

16A, 16B, and 16C show pressure plate 112.
shows the configuration of The pressure plate essentially consists of a flat, rectangular plate adapted to the shape of the holder with respect to its outer dimensions, in which case lateral slits 123 are provided for receiving the supports 106 of the holder. The pressure plate has a rectangular cable passage hole 124 adapted for the flat cable to be inserted. The circumference of the branch hole is surrounded by a raised edge 114, which is pressed onto the packing 110 or onto the pressure plate 111 during compression of the cable entry device. The hole 125 is a hole provided for fixing the pressure plate to the holding part.

As already mentioned, a tensile load compensating curved piece is also used in this embodiment, which curved piece is shown in FIGS. 7 and 8.
It is constructed in accordance with the tensile load compensating bend of the first exemplary embodiment and is arranged in the same manner as shown in the figures.

[Brief explanation of the drawing]

The drawings show an embodiment of a flat cable entry device according to the invention, FIG. 1 showing a flat cable entry device provided as a separate structural part in the plug connector casing, FIG.
The figure is a sectional view taken along line 2-2 of the flat cable introduction device in FIG. 1, FIGS. 3A and 3B are views showing the plug connector casing before the flat cable introduction device is installed, Figures 4B, 4C, and 4D show the frame-shaped holding part, Figures 5A and 5B show the packing, and Figure 6A
Figures 6B and 6C are views showing the pressure plate, Figures 7A, 7B and 7C are views showing one of the tensile load compensating curved pieces, Figures 8A, 8B and 8C. 9 shows the other tensile load compensating curved piece; FIG. 9 is a sectional view of the plug-in connector casing with integrally molded holding part; FIG. 10
The figure is a side view of Fig. 9, Fig. 11 is a plan view of Fig. 9, and Fig. 1 is a side view of Fig. 9.
Figure 2 is a view showing the fully assembled flat cable lead-in device in the plug connector casing shown in Figures 9, 10 and 11, and Figure 13 is a diagram showing the flat cable introduction device shown in Figure 12 along line 13-13. Figure 13A is a cross-sectional view of the flat type cable introducing device, and the first one of the flat type cable introducing device in which three flat cables are introduced.
The cross-sectional views corresponding to FIG. 3, FIGS. 14A and 148 are
15A and 15B are views showing the pressure plate, and FIGS. 16A, 16B, and 16C are views showing the pressure plate. (9,102...Holding part, 2,110...Packing, 3.112...Pressure plate, cow, 5,116.117.
...Tensile load compensation curved piece, 6,101...Plug-in connector casing, 7...Screw, 8...Through hole, 9゜9
', 9'', 109, 109', 1o9〃... Flat cable, 10, 105... Support shoulder, 1 (9, 115...
...Side part, 13,114...Protruded edge, 14.106
... strut, 16, 17, 119, 120... rib,
18... Edge, 19... Tsuking ring, 20
...Through hole, 21...Pace part, 22.103.
...Concave molded part, 23.30, 104.124...Cable through hole, 24...Groove, 103...Notch part,
Ill. ] For example: Plug-in connector casing Fig, 2 Fig, 3A 14 (9, strut 22, , concave molded part 23, , cable passage hole 310. pressure plate +3., , raised edge 30) Cable hole

Claims (1)

[Claims] 1. A device for introducing a flat cable into a wall, a casing wall, in particular a plug connector casing, in which a frame-shaped holding part (1
, 102), the holding part has struts (14, 106) arranged on mutually opposite sides, and in the bottom of the holding part there is a cable passage hole (23) pointing towards the casing interior. , 104), and holding parts (1, 1
02) is formed with a concave profile (22, 103), which has on its edge a support shoulder (10, 105) for the elastic packing (2, 110) to be inserted. Cable with flat packing (9, 109)
The tensile load compensating curved piece (4, 5; 116, 117) has a through hole (26, 122) corresponding to the cross-sectional shape of A device for introducing a flat cable, characterized in that it can be connected to the struts (14, 106) of the holding part with screws. 2. The holding part (1) is removably fixed to the wall or casing surface by aligning the cable passage hole (23) of the holding part (1) with the through hole (8) provided in the wall or casing surface. An apparatus for introducing a flat cable according to claim 1. 3. A patent in which the holding part (1) has an annularly extending groove (24) on its lower surface facing the wall surface or casing surface, and a packing ring (19) can be inserted into the groove. An apparatus for introducing a flat cable according to claim 2. 4. The holding part (102) has its cable passage hole (104)
2. A device for introducing a flat cable according to claim 1, which is also integrally molded on the plug connector casing (101). 5. Tensile load compensation curved piece (4, 5; 116, 117)
Device for introducing a flat cable according to any one of claims 1 to 4, characterized in that the support (14, 106) of the holding part (1, 102) is integrally molded. 6. One of the tensile load compensating curved pieces (4, 116) has rounded ribs (16, 119) extending longitudinally at right angles to the cable, and the tensile load compensating curve The other of the pieces (5, 117) has two mutually spaced rounded ribs (17, 120), and when the two tensile load compensating curved pieces are screwed together, one of the tensile 6. Flat cable according to claim 1, wherein the ribs of the load-compensating curved piece are oriented centrally between the ribs of the other tensile load-compensating curved piece. A device to introduce 7. The pressure plate (3, 112) is inserted into the central cable passage hole (3
0,124) and a pressure plate (3,112)
has a raised edge (13, 11) directed toward the packing (2, 110), which extends around the cable passage hole.
4), and the pressure plate is the holding part (1, 102).
A device for introducing a flat cable according to any one of claims 1 to 6, which can be connected with a screw. 8. One or more flat cables (9; 9, 9';9.9',9''; 1
09; 109, 109'; 109, 109', 109''
), and the packing (2, 110) has through holes (28, 122) of equal size.
A device for introducing the flat cable according to any one of paragraphs 7 to 7. 9. The cable passage holes in the holding part allow the maximum number of flat cables (9, 9',
The packing (2, 1
10) has one through hole (28, 1
22), and has holes corresponding to the length and width of the through holes (28, 122) in the packing on the upper and/or lower surfaces of the packing.
11') is arranged, a device for introducing a flat cable according to any one of claims 1 to 7.