EP0860837A2 - Insulator and adaptor for wires, tapes or strands under electrical tension for mounting and manufactoring fences - Google Patents

Abstract

The isolator (1) has an electrically insulating fixing part (2,3), e.g. of injection moulded plastics, receiving a screw for securing the isolator to a fence post, the fixing part used for securing the voltage wire. The fixing part has a T-shaped opening provided by 2 perpendicular slits (7,8), the screw having a widened head with a pair of parallel side faces, fitting into the T-shaped opening, which prevents its relative rotation.

Description

Technical field:

The invention relates to an insulator for electrical voltage leading Wires or tapes or ropes for loading and / or manufacturing Fences, especially pasture fences, consisting of an electric insulating holding part, which has a screw for on or Screwing or attaching the insulator to a post, in particular Wooden post, the holding part for holding the wire or ribbon or rope is formed, according to the preamble of claim 1 and an adapter for this.

State of the art:

These are insulators for electric wires or fences known in which the screw for mounting within a Post, for example a wooden post, firmly integrated in the plastic part is. The screw is in the manufacturing process of the insulator in this cast in and thus forms an integral part of the isolator. This configuration has the disadvantage that when the Isolators because it destroyed, for example, or from the weather too very bad, the isolator and its mounting part, the screw, must be replaced. That means significant additional Cost because the screw is normally not affected and therefore could actually remain in place.

DE-3730400-A1 is a housing with slots for in and Unscrewing pasture fence insulators has become known. The hook-shaped Electric fence insulator has a threaded bolt, which one Has screw thread and at the other end bent in a U-shape Insulator head carries; the insulator head is fixed to the threaded bolt connected. The housing is used to screw the insulator into a Post pushed onto the insulator head and turned; after that it will Housing removed.

A pasture fence insulator has become known from EP-0307350-A2 which is a threaded hook for wood or steel in an insulating plastic holder inserted and screwed in by turning through the isolator can be. The hook screw must be used to replace the insulator head be unscrewed or unscrewed from the mast, first then the insulator head can be removed.

DE-OS 2242147 contains an insulator for electric pasture fences, where a steel pin is hammered into an insulator head, the Insulator head can no longer be replaced. When the isolator head is on the pin is pressed on, it is firmly connected to the pin.

From FR-948651, a pasture fence isolator has become known an insulator head with a nail that has a rectangular head has, so that when driving the nail into a wooden post the insulator sitting on the nail shaft is clamped. Here too is Loosening the isolator requires pulling the nail out first, which is is difficult to accomplish because the nail head sinks in a recess can no longer be easily taken.

Technical task:

The invention has for its object an insulator for electrical Live wires or tapes or ropes for the production of To improve fences of the type mentioned in such a way that one Exchange only the actual isolator part to be replaced needs and the screw in place while it is still in order can remain; the insulator should also be attached to the post easier to accomplish than known pasture fence isolators.

Disclosure of the invention and its advantages:

The solution to the problem is that the holding part one in the Top view T-shaped recess made of two perpendicular to each other Has slots and the screw one with a shaft and one widened head with at least two mutually parallel side faces or key surfaces, is, especially wood screw, to match or clamping and twist-proof, releasable insertion of the shaft with Head into the recess, which is a bed for the head and the end part of the shaft of the screw.

In a preferred embodiment, the recess is in plan view in Direction of insertion of the screw designed T-shaped, the one Slot of the recess at least the inside diameter of the Has screw shaft and to the outside from two sides of the holding part is open, the other slot at least the clear width of the height of the screw head and the length of the wrench size and after is only open on the outside from one side of the holding part. The holding part can be a Plastic injection molded part, which consists of a head for holding the Wire and a base part formed thereon, in which the T-shaped Recess is introduced.

The isolator according to the invention has the advantage that the isolator head Insulator is designed interchangeable from the outset, so that the hook part no longer needs to be unscrewed. Defective insulators no longer need to be replaced completely, but the screw can remain on the post while it is still in order. It will only the old insulator or insulator head removed and a new one on the screw attached. Furthermore, a simple and quick installation of the Insulator according to the invention possible because the screw by means of a Wrench, or a riddle with nut and TORX or a cordless battery screwdriver with a nut or by hand, for example lightly screwed into a wooden post and then the insulator can be put on. Likewise, the screw on one can now Iron posts are welded on without destroying the insulator is because it is only then plugged on.

The screws used can be inexpensive hexagon standard screws be, the T-shaped recess as a snap good fit, which can also be jammed, of the insulator on the screw accomplished. Because the length of the slot that is used to accommodate the head serves, the wrench size corresponds to the screw, the insulator sits after the screw on the screw so that it cannot twist, so that when Turn the insulator, for example by hand, now the screw taken and rotated further into the post and especially the Isolator can be aligned in this way.

Due to the separation of insulator and carrier according to the invention, namely screw, the insulator is much cheaper to manufacture, since only the insulator as such needs to be replaced if it does is broken. The isolator according to the invention is also more environmentally friendly since the old insulator brackets no longer remain on the pastures. The Replaceable insulators can easily be put in your pocket and closed Be disposed of at home with the residual waste.

In a further embodiment according to the invention, the base part of the Isolators can be designed as cylinders or cuboids, from the lower Cover surface from the slots for receiving the screw are guided, whereby the slot for receiving the screw shaft to the outside both for Cover surface and to the cylinder surface of the cylinder or one of the Side surfaces of the cuboid and the slot for receiving the screw head is only open to the outside of the deck.

Conversely, the base part can be designed as a cylinder or as a cuboid, from the cylinder surface or one of the side surfaces from the Slots for receiving the screw are guided, the slot for Receiving the screw shaft to the outside of both the cylinder surface as well as to the top surface of the cylinder or to one of the side surfaces and the top surface of the cuboid and the slot for receiving the Screw head to the outside of the cylinder surface or one the side faces is open.

In a further embodiment according to the invention, the holding part or the entire insulator consist of an elastic material, wherein into the holding part as a recess for the screw in the direction of insertion the same a cylindrical blind hole is introduced, which is on inner end within the holding part for receiving the screw head widened, and for clamping but detachable plugging on of the isolator on the screw head and the screw shaft of the screw, so that in the top view of a section through a plane in which the longitudinal axis of the blind hole lies the same together with the widening at the end T-shaped. In this case too, the widened end of the Blind hole have at least two mutually parallel surfaces for Anti-twist protection of the screw head. In this way, insulators can also be used are used, which are made of rubber or rubber mixtures are made, here advantageously the screw a round, and optionally lenticular, slotted head with at least two has mutually parallel side surfaces, so that the insulator lighter can be pushed over the screw head of the screw until the Screw head in the end widening of the blind hole against rotation snaps into place.

In a further embodiment of the invention, the isolator can be equipped with a Adapters are coupled together and used, which adapter, which is cylindrical or cuboid, has an extension that consists of there is a narrow web that is at least partially in the middle over one of the Side surfaces of the adapter run, preferably over the entire height the side surface, a transverse surface being arranged at the end of the web, so that in the top view of the web and transverse surface they form a "T", and a rounded or cambered groove directly opposite the extension is arranged within the adapter, at least through the adapter a through hole is guided for the passage of a cable tie and for attaching the adapter to a pole or tube, the Adapter can be coupled to the insulator by means of the extension.

Brief description of the drawing, in which:

Figure 1

a view of an insulator consisting of a holding part, which is divided into a head and a base part

Figure 2

a plan view of Figure 1

Figure 3

a section along the section line A-A in Figure 1

Figure 4

a section along the section line B-B in Figure 1 together with a standard screw

Figure 5

an example of a ring insulator in a side view without screw

Figure 6

5 shows a view of FIG. 5 rotated by 90 degrees

Figure 7

a plan view of Figure 5

Figure 8

a section along the line A-A in Figure 5 with screw

Figure 9 a, b and c

an adapter that is connected to the isolator can be used, with the adapter and isolator coupled together and the adapter with cable ties can be attached to a pole or metal pipe

Figure 10

a view of another insulator for tapes or ropes

Figure 11

a view rotated by 90 degrees of Figure 10

Figure 12

a plan view of Figure 10 and

Figure 13

a section along line A-A in Figure 10 with screw and

Figure 14

a view of another insulator.

WAYS OF CARRYING OUT THE INVENTION:

According to FIGS. 1 to 4, an insulator 1 is known in this respect formed from an approximately cylindrical holding part, which integrally a partially frustoconical head part 2 and a cylindrical Base part 3 exists. The head part 2 and the base part 3 are as such rotationally symmetrical, the head part 2 in a known manner above the can have truncated cone-shaped insulating rings 4, 17. the headboard 2 has a circumferential groove 20 in the transition to the base part 3 Enlargement of the insulation distance. From above is in the top surface of the Head part 2 an oblique groove 5 in the direction of a diameter let in for the introduction of a wire carrying an electrical voltage leads. In section plane A-A shown in Figure 3 it can be seen that to snap the wire into the groove 5 the same at its bottom is widened conically in radial directions so that it slides out of the wire is prevented after insertion into the groove 5.

A recess is made in the base part 3, which is seen from above from below - or in the section shown in Figure 4 along the line B-B in Figure 1 - T-shaped. The recess consists of two to each other vertically directed slots 7, 8 for matching or clamping Inclusion of a screw 16, consisting of screw shaft 9 and widened screw head 10. Both slots 7, 8 go from the lower Cover surface 18 of the base part 3, the slot 7 for receiving the Shank 9 of the screw 16 both from the top surface 18 and by 90 Degree for this from the jacket wall 19 of the base part 3 to the outside is open. The transverse slot 8, which runs transversely to the slot 7, is, however only open to the outside from the top surface 18 of the base part 3, as is natural also towards the slot 7, and is used for inserting and receiving the Screw head 10 of the screw 16. The slot 7 has at most one clear width according to the diameter of the screw shaft 9. The transverse slot 8 has a clear width of at most the height of Screw head 10 and a length of the wrench size of the screw head 10. The insulator 1 is seated perpendicularly to the screw 16, or the central axes of insulator 1 and screw 16 are perpendicular to each other. In this way, the screw 16 is secured against rotation within the slots 7, 8 of the base part 3 are held. Slots 7, 8 and screw 16 can have such dimensions to one another that the screw head 10 and / or the upper part of the screw shaft 9 in the transverse slot 8 or in Slot 7 clamps, which also applies to the embodiments in FIGS. 5 to 9 applies so that the insulator can no longer be easily removed from the screw 16 is. The screws 16 used can be standard screws according to DIN 571 be with hexagon head; or screws can be used, whose head has only two lateral surfaces that are plane-parallel to each other.

FIGS. 5 to 8 show a further embodiment of an insulator 11 shown, consisting of a cylindrical base part 14, which is similar the base part 3 is designed in Figure 1. There is an approximately bell-shaped one on it Molded headboard 13, on which a ring 12 with a through hole is perpendicular 15 is arranged. Below the head part 13 in the transition to Base parts 14 again have a circumferential groove 20. The ring 12 has a slot 21 for receiving either an electrical Tensioning wire or ribbon. The top view in Figure 7 is the slot 21 is guided obliquely so that the two ring parts in tips 17, 17 ' approach. There is one at each of these tips 17, 17 'of each ring part thin, flexible flag 29, 30 arranged, which together the slot 21 in Lock openable and closable way. These flags 29, 30 serve to the fact that after the introduction of tapes into the through hole 15 through the slot 21 the tapes, which tend to flutter in the wind, not blown out of the through hole 15 and the slot 21 will.

Inside the base part 13 is the top view in the direction the insertion direction of the screw 16 T-shaped recess introduced, consisting of the longitudinal slot 7, which both for Mantle wall of the base part 13 and the top surface 31 of the same is open to the outside. Transversely to this longitudinal slot 7 extends at the end the short transverse slot 8 for receiving the screw head 10 of the Screw 16, the transverse slot 8 outwards from the jacket wall of the base part 13 is open, as is also the case in FIGS. 1 and 4 corresponds.

In both embodiments, the screw 16 is perpendicular to it Longitudinal axis inserted into the T-shaped recess slots 7, 8 or pressed in, after which the insulator 1, 11 sits securely on the screw 16. The clear widths of the slots 7, 8 are chosen so that the screw 16th just fitting or preferably clamped on the insulator 1, 11.

FIGS. 9, a, b and c also show three different views an adapter 22 that is used in common with the isolator and can be coupled with it.

Due to the T-shaped recess of two perpendicular to each other standing slots 7, 8, 14, 15 of the holding part 2, 3, 12, 13 of the insulator can to the insulator an adapter 22 by means of a T-shaped in a plan view Extension are coupled. The extension consists of a narrow one Web 25, the middle at least partially over one of the side surfaces of the Adapter 22 extends, preferably over the entire height of the side surface, as shown in FIG. 9 b), a transverse surface 24 at the end on the web 25 is arranged, which runs over the entire height of the web, so that in the Top view of web 25 and transverse surface 24 form the same "T", which can be inserted into the T-shaped recess of the insulator. Directly The adapter 22 has a "T" -shaped extension concave rounded or convex concave or convex curved contact surface 26, such a contact surface 26 also laterally in one of the Side surfaces can be arranged at an angle of 90 degrees or is inclined approximately 90 degrees to the extension. Through the body 23 of the Adapters 22 are two through bores 27, 28 for performing of two cable ties with which the adapter 22 and thus also the insulator can be attached to a pole or pipe.

It is possible to use the adapter 22 together with the isolator, because the top view of the extension is like the head and shank of a hexagon bolt looks and when inserted into the T-shaped recess the holding part of the insulator also acts in the same way, so that the recess in the slots 7, 8 is a receiving bed for the extension 24, 25 of the adapter forms.

In this way, the isolators according to the invention can not only be used metallic hexagon wood screws are attached to wooden posts, but by means of the intermediate adapter 22, it is possible to Adapters and thus the insulators using the cable ties on metal pipes, To fix iron posts or angle irons without doing so on the iron welded or holes have to be drilled in the iron. The back Surface of the adapter 22, which, as seen in cross section, cambered or has a circular contact surface 26, the fastening object facing, the contact surface 26 on both round and fits square or flat surfaces well. Then two cable ties through the through holes 27, 28 in the body 23 of the adapter 22 guided and tightened to the mounting object.

An isolator 40 of FIGS. 10 to 13 essentially consists of the two integrally connected parts 32 and 33, the part 32 corresponds to the head part 2 and part 33 to the base part 3 in FIG. 1. The Part 32 consists of the two halves 34, 35, which means at one end of a web 36 are interconnected and the one between them flat recording space 37 for a band and a round recording space 38 enclose for a rope. At the opposite end they own two halves 34, 35 a clip closure 39. The two halves 34, 35 can thus be opened and a ribbon or rope inserted between them and be clamped. The band or the rope do not need electrical ones To lead tension.

The part 33, which is formed on the half 35 of the part 32, has Slots 7, 8, which are identical to the slots 7, 8 in the base part 3 of the figure 1 are designed. The part 33 is only not cylindrical here but cuboid design. In Figure 14 is another example of an isolator shown, the base part is designed as a cylinder 41, of which Cylinder surface 42 from the slots 7, 8 for receiving the screw 16th are guided, the slot 7 for receiving the screw shaft 9 outwards both to the cylinder surface 42 and to the top surface 43 of the cylinder 41 open and the slot 8 for receiving the screw head 10 is only open to the outside of the cylinder surface 42.

Industrial applicability:

The insulators according to the invention are particularly for fencing and enclosure of animal paddocks with an electrical voltage Suitable for wires or with ribbons or ropes. The special advantage of Isolators is that defective isolators are no longer complete need to be replaced, but the screw remains on the post can, as long as it is still in order; it just becomes the old isolator pulled off and a new one put on the screw, which is an easy one and quick assembly of the isolator. Using the adapter the insulator also fixed iron posts without drilling or welding will.

List of reference numerals:

1, 11, 40

insulator

2nd

Headboard

3, 14

Base parts

4th

Insulator rings

5

Groove

6

Broadening

7, 8

Slits

9

Screw shaft

10th

Screw head

12th

ring

13

Insulator bell

15

Through hole

16

screw

17, 17 '

sharpen

18, 31

Cover areas

19th

Cylinder surface

20th

circumferential groove

21

slot

22

adapter

23

cuboid body

24th

Transverse surface

25th

web

26

concave or domed curved Contact surface

27, 28

Through holes

29, 30

Flags

32, 33

Parts corresponding to the head part and base part

34, 35

Halves

36

web

37, 38

Recording rooms

39

Clip closure

41

cylinder

42

Cylinder surface

43

Top surface

Claims (13)

Insulator (1, 11, 40) for electrical wires or tapes or ropes for fitting and / or producing fences, in particular pasture fences, consisting of an electrically insulating holding part (3, 14, 33) which has a screw (16) for screwing or screwing or fastening the insulator (1, 11, 40) to a post, in particular a wooden post, the holding part (3, 14, 33) being designed to hold the wire or tape or rope, characterized in that
that the holding part (3, 14, 33) has a T-shaped recess in plan view from two perpendicular slots (7, 8) and the screw (16) has one with a shaft (9) and a widened head (10 ) with at least two mutually parallel side surfaces or key surfaces, in particular wood screw, for suitable, preferably clamping and non-rotatable, releasable insertion of the shaft (9) with head (10) into the recess, which is a receiving bed for the head (10) and forms the end part of the shaft (9) of the screw (16). Insulator according to claim 1, characterized in
that the recess of the slots (7, 8) is T-shaped in the top view in the direction of insertion of the screw (16), the one slot (7) of the recess having at most the inside diameter of the screw shaft (9) and towards the outside is open from two sides of the holding part (3, 14, 33) and the other slot (8) has at most the clear width of the height of the screw head (10) and to the outside only from one side of the holding part (3, 14, 33) is open. Insulator according to claim 1 or 2, characterized in
that the holding part is a plastic injection-molded part, which consists of a head part (2, 12, 32) for holding the wire or the band or the rope and a base part (3, 14, 33) formed thereon, into which the T-shaped recess of the Slots (7,8,14,15) is introduced. Insulator according to claim 3, characterized in
that the base part is designed as a cylinder (3, 14) or as a cuboid (33), from the lower top surface (18, 31) of which the slots (7, 8) for receiving the screw (16) are guided, the slot ( 7) for receiving the screw shaft (9) to the outside both towards the top surface (18) and to the outer surface (19) of the cylinder (3, 14) or one of the side surfaces of the cuboid (33) open and the slot (8) to The screw head (10) is open to the outside only towards the cover surface (18, 31). Insulator according to claim 3, characterized in
that the base part is designed as a cylinder (41), from the cylinder jacket surface (42) of which the slots (7, 8) for receiving the screw (16) are guided, the slot (7) for receiving the screw shaft (9) to the outside open both to the cylinder jacket surface (42) and to the top surface (43) of the cylinder (41) and the slot (8) for receiving the screw head (10) is only open to the outside of the cylinder jacket surface (42). Insulator according to claim 1, characterized in
that the holding part (3, 14, 33) consists of an elastic material, into which a cylindrical blind hole is made as a recess for the screw (16) in the direction of insertion thereof, which is located at the inner end inside the holding part (3, 14, 33) widened to fit the screw head (10) and to clamp but releasably plug the insulator onto the screw head (10) of the screw (16), so that in the top view a section through a plane in which the longitudinal axis of the blind hole lies, the same is designed T-shaped together with the end widening. Insulator according to claim 6, characterized in
that the holding part consists of a head part, in particular a ring (12) with a slot (21), for holding the wire and a cylindrical or rectangular base part (3) formed thereon, in which in the direction of the longitudinal axis of the cylinder (3) or the cuboid, the blind hole is made together with the widening at the end. Insulator according to one of the preceding claims, characterized in that
that an adapter (22) can be coupled into the T-shaped recess from two slots (7, 8) of the holding part (3, 14, 33) perpendicular to one another by means of an extension (24, 25) which is T-shaped in a plan view, wherein the adapter (22) is cylindrical or cuboid and has a rounded or cambered groove (26) directly opposite the extension (24, 25), and that at least one bore (27, 28) is guided through the adapter (22) for the passage a cable tie and for attaching the adapter to a pole or pipe. Insulator according to claim 9, characterized in
that the adapter (22) is cuboid and the extension consists of a narrow web (25) which at least partially runs centrally over one of the side surfaces of the adapter (22), preferably over the entire height of the side surface, a transverse surface ( 24) is arranged so that in the top view of the web (25) and transverse surface (24) they form a "T". Insulator according to claim 8 or 9, characterized in
that also one of the side surfaces, which are directed at an angle of 90 degrees to the "T" of the extension, has a concavely rounded or cambered receiving or contact surface (26). Insulator according to claim 1 and 4, characterized in
that the holding part consists of two integrally connected parts (32, 33), the first part (32) being formed from two openable and closable halves, between which a band or a cable is held, and wherein the second part (33) is designed as a cuboid as a base part. An adapter (22) for use with an isolator according to claim 1,
characterized in that the adapter (22), which is cylindrical or cuboid, has an extension (24, 25) which consists of a narrow web (25) which runs at least partially in the middle over one of the side faces of the adapter (22) , preferably over the entire height of the side surface, a transverse surface (24) being arranged at the end of the web, so that in the plan view of the web (25) and transverse surface (24) they form a "T" and the extension (24, 25 ) directly opposite a rounded or cambered groove (26) is arranged within the adapter (22), at least one through hole (27, 28) being passed through the adapter (22) for the passage of a cable tie and for fastening the adapter to a post or Pipe, wherein the adapter can be coupled to the insulator by means of the extension (24, 25). Use of an adapter (22) which is cuboid or cylindrical and which has a T-shaped extension (24, 25) in a plan view, consisting of a narrow web (25), which is at least partially in the middle runs over one of the side surfaces of the adapter (22), preferably over the entire height of the side surface, with a transverse surface at the end of the web (24) is arranged so that in the top view of the web (25) and transverse surface (24) they form a "T", together with a holding part (2,3,12,13) which the adapter can be coupled to the extension (24, 25), the Holding part (2,3,12,13) has a T-shaped cutout from two in plan view perpendicular slots (7,8,14,15) has to suitable and twist-proof, releasable insertion of the extension (24, 25) into the recess, which forms a receiving bed for the extension (24, 25).

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