FR2542050A1 - TWO-BODY CONNECTED JUNCTION, IN PARTICULAR FOR ELECTRICAL INSTALLATIONS - Google Patents

Abstract

A. TWO BODY SCREWED JUNCTION ESPECIALLY FOR ELECTRICAL INSTALLATIONS. B. CHARACTERIZED IN THAT THE TUBULAR BODY 1 IS PROVIDED, NEAR END 3 OF THE TUBE, ON PART OF ITS CIRCUMFERENCE, WITH A SLOT 4 WHICH ALSO CUT THE INTERNAL THREAD 2 AND WHICH HAS A DIMENSION SUCH AS THE PART THE TUBE WHICH IS LOCATED BETWEEN SLOT 4 AND END 3 OF THE TUBE CAN ELASTICALLY DEFORM; THAT THE BODY 6 CARRYING THE EXTERNAL THREAD 7 SHOWS A STOP SURFACE 8 PLACED PERPENDICULARLY TO THE AXIS OF THE THREAD, WHICH REACHES THE ERGOT 5 WHEN THE PARTS ARE SCREWED INTO ONE ANOTHER. C. THE INVENTION APPLIES TO A SCREWDED JUNCTION WITH TWO BODIES OF WHICH ONE IS FIXED IN A PARTITION AND THE OTHER IS BLOCKED BY SCREWING INTO THE FIRST, ESPECIALLY FOR ELECTRICAL INSTALLATIONS.

Description

1 - "Junction screwed to two bodies in particular for installations

  The invention relates to a screw junction which consists of a tubular body whose bore

  offers an internal thread and a body carrying a file-

  external floor fitting to the internal thread.

  Screw junctions of this kind are frequently

  used in the field of installations, in particular

  particular electrical installations, for example

  in the manufacture of cables and drivers with

  plug-in connectors and other installation materials, such as lampholders.

  screwed junctions of this kind, crossings of

  building sounds, for example plugged pieces

  which pass through them In these screwed junctions, we meet

  the problem of the requirement of a good ease of operation

  during the screwing of the one into the other, and the requirement of a certain resistance of the junction screwed against the unscrewing It is known, for example when

  attaches the outer housing of lampholders to

  descending on tubes with external threads, to lock one on the other by means of locking screws

  These tubes, however, require a large expense

  for the manufacture and assembly It is also

  if known that it is possible to ensure, by choosing the material and the given form, that at the last thread, one of the threads 2.-

  commits itself by slashing it into the body of the other and provokes

  that a certain blockage of the threaded parts with respect to each other This solution is however suitable

  junctions that must be frequently removed.

  and then again, because the repetition of

  notching operation ultimately decreases the friction

  necessary to stop the threaded parts with respect to

  at the other, below the efficiency threshold.

  The object of the invention is to produce a

  screwed connection which combines the ease of operation, during assembly, with a sufficient blocking capacity, which can be manufactured inexpensively, and which can be 8

  assembled and dismantled, as far as possible, without

  plementary. For this purpose, the invention proposes that:

  the tubular part is provided, in the vicinity of its ex-

  portion of its circumference, a slot, which also cuts the internal thread and which is of such a dimension that the tubular portion between the slot and the end of the tube can deform elasticallyq on the front surface of the end of the tube, in the region of the notch sector of the internal thread, there is provided an elevation, in the form of pin, for example, and, the body carrying the external thread has an abutment surface disposed perpendicularly to the axis of the threads, that the elevation in the form of ergot reaches

  when we screw the two pieces together in the other.

  As soon as the pin-shaped elevation reaches the abutment surface, the portion of the tubular body between the pin and the slot is deformed, and thus a fixation of the two parts of the tubular body is obtained. the

  junction which brings an important improvement.

  The invention is also suitable for fixing construction parts, such as bushings or 3.-pieces plugged into the construction partitions, if in another aspect of the invention, the elevation in form

  ergot reached, when one of the parties in the

  one of the sides of a partition, the face of the body carrying the external threads applied on the other side of the partition To improve the fixing, it is recommended to place the partition and the supporting body the external thread so that they can not rotate relative to each other. The particular advantage of the invention lies

  in that the seat of the screwed junction is considered

  badly improved, and that this junction can be,

  on the other hand, released by implementing a weak

torsion force.

  The attached figure shows, in a representative

  partial schematic layout, an example of

of a junction according to the invention.

  The reference 1 designates the tubular body with a perforation which has an internal thread 2. Near its end 3, the body 1 is provided with a slot 4, which cuts the internal thread 2. Furthermore, it is provided on the front surface of FIG. the end 3 of the tube in the region of the sector of the slot 4, an elevation 5 in the form of pin The part 6 forms the other part of the screwed junction and carries an external thread 7, as well as an abutment surface 8 If, now, we screw the one into the other, the body 6 with the body 1, directly or after

  that it was passed through a drilling-of the partition 9 re-

  shown in dashes, the lug 5 abuts on the abutment surface

  8 or on the side facing him of the partition 9 He exer-

  this then a thrust directed along the generatrix of the body 1 It follows that between the lug 5 and the slot 4,

  the internal thread 2 is deformed and applies to the

  external contribution 7 more strongly than it would be possible

ble without the lug 5 and the slot 4.

4.-

R E V BE N D I C A T IO N S

  1. Screwed junction consisting of a tubular body whose bore carries an internal thread and a body carrying an external thread adapted to this perforation, characterized in that: the tubular body (1) is provided, close to the end (3) of the tube, on a saccircumference part, of a slot (4) which also intersects the internal thread (2) and which has a dimension such that the portion of the tube which lies between the slot (4) ) and the end (3) of the tube, can deform elasticallyt it is provided on the front surface of the end (3)

  of the tube, in the area of the notch sector of the

  interior (2), an elevation (5) in the form of a pin, and

  that the body (6) carrying the external thread (7) pre-

  an abutment surface (8) positioned perpendicular to the axis of the thread, which reaches the stub (5) when

  screw the pieces into one another.

  2 Junction screwed according to the claim

  1, characterized in that the elevation (5) in the form of er-

  got achieved, when we screw the parties one in the other

  one of the faces of a partition (9) of a construction which is traversed by the body (6) carrying the external thread (7), by a perforation, and that the abutment surface (8) is applies to the body (6) carrying the thread

  outside (7) on the other side of the partition (9).

  3. Screwed junction according to claim 2, characterized in that the partition (9) and the body (6) carrying the external thread (7) are applied against one another so as to be able to turn one compared to each other.