JPH0586520B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for releasably tightening cables or the like, especially in electrically driven hand-held machine tools.

[Prior Art] In known devices of this type, an unassembled bridge made of sheet steel or plastic is tightly clamped onto a cable vest by means of two clamping screws. There is. Assembly with such fastening systems requires special manual dexterity and practice on the part of the operator. This is because in this case the hand has to perform many tasks at the same time. The position of the connecting conductor must be secured, the bridge must be aligned and pressed against the screw hole adjacent to the cable vest, and at the same time the first clamping screw must be held vertically in the screw hole. This means that the clamping screw can be screwed in with a screwdriver without tilting. In the above operations, the hand holding the screwdriver is often injured when the screwdriver slips and comes off. Furthermore, screws made of synthetic resin are often damaged due to insufficient guidance of the screws, which causes them to be screwed in at an angle. Furthermore, when assembling with such a system, care must be taken not to screw the first screw too deeply. This is because otherwise the opposite end of the bridge would slope too high to allow the second screw to be screwed in. For this purpose 2
The two tightening screws must be screwed in in small increments. With such a system, assembly operations can be carried out satisfactorily and quickly only by means of a holding device with a spectacle-shaped screwing device, such as is also used in assembly operations. The costs required for the above-mentioned work are expensive. Additionally, two screw holes, two screws, and one bridge must be provided, making the assembly process time consuming and expensive.

[Problem to be Solved by the Invention] It is therefore an object of the present invention to create a cable or the like which can be easily and reliably assembled without the need for additional auxiliary means. The purpose of the present invention is to provide a device for tightening.

[Means for Solving the Problems] According to the present invention which solves this problem, one hinge portion of the open hinge has an introduction slope at its introduction opening, and the one hinge portion has an introduction slope. The introduced bridge is at least partially positively surrounded and held against displacement laterally relative to the cable vest.

According to the configuration of the present invention, one side of the bridge is
By hanging on an open hinge, screws and screw holes are omitted, yet the bridge is immediately provided with the correct position for screwing in the retaining screw.

Advantageous embodiments and improvements of the device according to the invention are possible by means of the measures specified in the dependent claims. Particularly preferably, the bridge is made of synthetic resin and is provided with a rib, which extends to the other hinge part formed on the bridge side, which forms part of the open hinge.

[Example] Next, the configuration of the present invention will be specifically described with respect to an example shown in the drawings.

A cable vest 3 is arranged within the casing 1 to which the cable 2 is to be tightened. One hinge portion 4 (locking side hinge portion) of an open hinge as a casing side portion is assigned to this cable bed 3. The other hinge part of the open hinge formed on the bridge 6 (the hinge part on the locked side) is designated by the reference numeral 5. On the side of the cable vest 3 opposite the one hinge part 4, a screw hole 7 is provided in the casing 1. This screw hole 7 is used for screwing in a retaining screw 8. The retaining screw 8 engages through the through hole 9 at the end opposite the other hinge portion 5 formed in the bridge 6 . The bridge 6 made of synthetic resin, for example, has ribs 10.
This rib 10 extends from the other hinge portion 5 to a position beyond the through hole 9. The bridge 6 has a tightening ridge 11 on the cable 2 side. The part of one hinge part 4 bridged by the rib 10 has a cutout 12 so that the rib 10 can be extended into the other hinge part 5 without interfering with the pivotability of the open hinge. have.
The introduction ramp 13 facilitates the insertion of the bridge 6 into one of the hinge parts 4. In the illustrated embodiment, the casing is constructed in the form of a shell;
One hinge portion 4 has an opening 14 facing toward it. This forms the undercut of one hinge part 4, which is necessary for holding the bridge 6. This is because the undercut part of one hinge part 4 can be removed through the opening 14 which is present in the demolding direction of the injection molding tool. According to FIG.
It can be seen that it is adapted to be closed again to the outside by the assembled and completed bridge. This prevents voltages from being conducted out from a possibly defective cable through the bridge 6 and the contaminated opening 14 into the hands of the operator. Due to the provision of ribs 10 extending from the other hinge part 5 beyond the through hole 9, the bridge 6 has a high bending strength over its entire length.

In order to tighten the cable 2 in the cable vest 3, the cable 2 is first placed in this cable vest 3. Then the other hinge part 5
The bridge 6 is attached to the cable vest 3 by hooking and locking it into one hinge part 4.
and in turn connected to the casing 1. When the other hinge part 5 is hooked onto the one hinge part 4, the bridge 6 is forced into a position where the through hole 9 is directly above the screw hole 7. The holding screw inserted into the through hole 9 is forcibly held in a vertical state when being screwed into the screw hole 7. This allows the holding screw to be screwed in easily and without damaging the thread of the screw hole 7. This device not only simplifies assembly, but also simplifies the after-sales service that may be required. Parts are not easily lost when replacing the cable. This is because a very long part of the bridge 6 is held pivotably in one hinge part 4. The screwing operation of the retaining screw 8 is well guided by the through hole 9 of the bridge 6, so that damage to the threads is completely avoided.

[Effect] As described above, the device for releasably tightening a cable according to the configuration of the present invention has the advantage that a simplified and reliable tightening operation can be obtained without any additional auxiliary means. There is. Further, by omitting the second screw hole, the required space can be reduced.

[Brief explanation of the drawing]

1 is a partial sectional view of an embodiment of the device according to the invention, with the bridge integrated in the hinge not yet screwed in; FIG. 2 shows the bridge installed in the hinge with the retaining screw screwed in; A partial cross-sectional view, FIG. 3 is a plan view of FIG. DESCRIPTION OF SYMBOLS 1... Casing, 2... Cable, 3... Cable vest, 4... One hinge part, 5... Other hinge part, 6... Bridge, 7... Screw hole, 8... Holding screw, 9... Through hole, 10... Rib, DESCRIPTION OF SYMBOLS 11...Tightening protrusion, 12...Notch, 13...Introduction slope, 14...Opening.

Claims (1)

[Claims] 1. A device for releasably tightening a cable or something similar, which comprises a cable vest 3 formed at a tightening point and a bridge 6 for bridging the cable 2 at the tightening point. The bridge 6 and the cable vest 3 are connected by an open hinge, and the free end of the bridge 6 has a through hole 9 for a retaining screw 8 screwed into the cable vest 3. In those types in which one hinge part 4 of the open hinge has an introduction ramp 13 at its introduction opening, the bridge 6 introduced into said one hinge part 4 is at least Device for releasably tightening cables, characterized in that it is partially encircled in a form-locking manner to keep this bridge 6 against displacement laterally relative to the cable vest 3. 2. The casing 1 with the cable vest 3 is constructed in the form of a shell, such that one hinge part 4 of the open hinge can be taken out through the opening 14 present in the mold removal direction of the injection molding tool. Device according to claim 1, characterized in that the opening (14) is adapted to be closed by the bridge (6) during assembly. 3. The housing 1 with the cable vest 3 is of bar-shaped construction, with one hinge part 4 of the open hinge lying in the demolding direction of the injection molding tool, so that this one hinge part 4 ,
Claim 1: The device can be integrally molded using an injection molding tool that does not have a slider.
Apparatus described in section. 4. The rib 10 of the bridge 6 extends to the other hinge part 5 of the open hinge formed on the bridge 6 and formed on the cable vest 3,
One hinge portion 4 of the open hinge is connected to the rib 1.
Claim 1, which is notched according to 0
Apparatus described in section.