DE7142674U - Ball joint screw connection for introducing electrical cables into switch boxes, machine frames, etc. - Google Patents

Description

Lüdenscheid, 11.11.19 ⁷ 1 j ^. Johannes Popproth 9.50 p / u 5

Patent attorney

Lüdenscheid, Oenekinger Weg 7 20655

Grebrauohsmuster registration

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5609 / Httckeswagen 1st RhId.

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Ball joint screwing for the introduction of electrical cables in control box, machine parts etc.

The invention relates to a ball joint screw connection for the introduction of electrical cables in Schaltkäs th machine frames and the like, but also in electrical Radiant lamps, the inclination of which is changed more often to be colored. It depends on that the cable is at the point of greatest bend within the joint gap in the joint! does not experience any impermissible compressive stresses with the effect of crushing, which could lead to short circuits in the Veins could lead. The Grelenkverschraubung should also be used in cases in which the Grelenkverschraubung a! undergoes considerable stress from tension, pressure or impact,! particularly resistant to compliance his final attitude, but nevertheless on the up! construction to be simple and inexpensive and preferably also The upper part of the screw connection can also be swiveled around the center line of its fastening socket.

The ball joint according to the invention is ^! initially characterized in that a tubular body carrying a fastening thread behind a ring = ί

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shaped constriction as a ball, the wall of which on their front free end to accommodate the Kaoelbiegung in the bent position a radially extending recess has, is formed and that the part of the ball adjacent to the constriction is in an inner spherical cap-shaped Storage area of the end wall of a species |

Union nut, the side wall of which has a

l Radial opening open towards the _wall for opening |

would take the constriction of the tubular body in the case of a kink ί owns, stored and in every setting of the tubular body to the union nut of one in her inner!

thread penetrating hollow threaded connector is pressed. {

To ensure that the union nut and the j

To achieve thread ti *, ens against the K-igel the union nut on the one hand and the threaded connector on the other hand on their outer surfaces their rotation against each other beneficiary funds. If the rotation i against one another is to be done by hand, this is sufficient radially protruding projections, such as pins. However, it is more advantageous, for example, to have edges on each of them Provide wrench attack.

In order to hold the ball particularly firmly in its position, the ring-shaped end face that touches the ball is advantageous des Gewi i »d it does ζ ens designed so that the through hole for the cable is conical after this

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expanded towards. This plague attitude is even cheaper if this expansion area is also designed like a dome will.

egg ι

II A ball-and-socket joint that meets these conditions

The screw connection can be bent from the extended position or the mid-perpendicular A-A as far as the recess in the correspondingly high dimensioned / anding of the over- ' : lump nut and the diameter of the constriction of the

Tube body, that is up to about 90 ° allowing With a simple means of carried by the tubular body upper part of the screw can also be additionally in: a plane B = B pivot when the ball ^about: the amount deö ball center point in a perpendicular

The center line extending dividing plane B - B is divided into two parts in such a way that the separated front Spherical part with its recess on this swivel

f ) 'Movement of the upper part (union nut and threaded connector)

can participate as long as no fixed tension has been created between them.

Basically, the threaded connector only needs a disk-shaped end with the abovementioned edge surfaces to bring about the twisting when tightening and loosening. In a preferred embodiment, however, the threaded connector is at the same time still as

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known liquid-tight inlet connection, possibly with plague clamping device for a protective tube enclosing the cable is formed.

In the drawing, the subject matter of the invention is on an embodiment explained.

Show it:

Fig. 1 is a front view of the ball joint screw connection in the extended position A-A,

Pig. 2 shows a side view of the same in an angular position of approx. 45 °,

Pig. 3 is a plan view of Pig. 2,

Pig. 4 is a side view of the tubular body with transverse ^! divided sphere, where the separated part is dashed,

Figo 5 is an end view of the threaded end of the tubular body,

Figures 6 and 7 are side and plan views of the severed Part of the sphere,

Pig. 8 and 9 side view and front view of the union nut, the latter partly cut open, and

Fig. 10 is a section through the simplest embodiment of the threaded connector as a pressing member for Ball of the ear body in the union nut.

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The ball joint screw connection consists essentially, if one of a special sealing device for the cable passed through, consists of three components, namely the tubular body 1, a type of union nut 2 and a threaded connector 3.

The Äohrkörper 1 carries external thread 1 for screwing into the threaded hole of an insertion point of an object (not shown), for example a switch box, a machine housing or the like. Depending on the intended use, and behind an annular j

b c '

Constriction 1 a ball 1, the wall of which at its |

front free end to accommodate a cable bend \

has a radially extending recess 1. Advantage-; the spherical part 1 ° is physically divided approximately at the level of the spherical center line in a plane B-B so that

cc

the separated part 1 rests as a carrier of the radial recess 1 on the flat face 1 ¹ of the other spherical part 1 ^C plane and it is verechwenkbar opposite parallel 'to the division plane BB.

The middle part, its shape referred to as upper nut 2 due to, has at its annular end wall 2 ^a a ^B ohrung 2 for the passage of the tubular body 1, 1 ^a and extending from the bore 2, _Usne after there open radial A paralysis 2 °, which

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here extends to approximately the middle height of the side wall 2 and serves to accommodate the constriction 1 of the tubular body 1 in a kinked position (Pig. 2 and 3). The radial recess of the tube body 1 1 can be guided through the cable to such an extent motion frelEit that it is not squeezed in the bent position. On the inner surface of the side wall 2 of the union nut 2, the cross-section of the wall in the vicinity of the end wall 2 ^a is designed so that a dome-shaped support surface 2 ^e for the ball 1 ^C is formed there.

A hollow threaded connector 3 can be ^{screwed with its external thread 3 a} into the internal thread of the side wall 2 ^{C of} the union nut 2 and presses the ball 1 ^C firmly against the inner bearing ^{surface 2 e of} the union nut ter 2, so that it adheres _{to its intended Elrj e} division. It is advantageous if the inner bore of the threaded connector 3 at the point of contact with the ball 1 ^C ,

1 expands towards the outside and to a particular extent when this contact surface 3 Kalottenfönnig is designed (Fig. 10).

The outer walls of the union nut 2 and corresponding points of the threaded connector 3 are flat or flat here. Edged designed so that you can push both parts after a wrench or similar tool

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G CC

Can clamp very firmly against the ball 1, 1 and the screw connection can withstand the greatest loads.

You set the components 1, 2, 3 of the ball joint screwing in the preferred shown

C CC

Execution orm, i.e. with. split ball 1, 1 assumes that first the tube body 1 in the insertion hole, is tightened. Then, with the screw connection of the union nut 2 and the Sewinde- Btutzeaa 3 loosened, this structural unit is initially set in the bent position (Fig. 2 and 3) after the cable has been passed through, whereby the constriction 1 of the tubular body extends accordingly far into the recess 2 of the union nut 2 can pivot and the cable bend is inserted into the recess 1 of the spherical part 1 ^CC . If the height of the union nut were made larger, the recess 2 ° could also be deepened so that the tubular body 1 could be in a right-angled position with respect to the upper part 2, 3. Now, depending on the set bending position, the upper part 2, 3 can be pivoted about the central axis A - A in a circular movement, depending on which direction the cable fed in is in. This is achieved by the fact that the cable bend in the recess 1 of the

CC

Ball part 1 lies in a position where the latter can rotate without risk of damage to the cable.

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stands. When parts 1, 2 and 3 are in the correct position in relation to each other, the two parts 2 and 3 are tightened against each other and the ball 1 *
presses,

gel 1 ", 1 ~~ between the storage areas 2", 3 ~ iestge

The threaded connector 3 can moreover by application known means can be further developed so that the cable is sealed and that the end a protective hose, which surrounds the cable at a distance, can be attached there. In this case the threaded connector has the shape of a double nipple (Pig »10), on the free side of which another threaded cap follows Type of a union nut 4 is screwed on

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Claims (6)

Protection claims: 1 ·) Ball joint screw for insertion of cables in the control box, machine frames, o. The like., Characterized in that a a fastening thread (i ^a) carrying the tubular body (1) behind an annular constriction (1) as the ball (1 ^C), the wall of which at has a radially extending recess (1) at its front free end for receiving a cable bend, and that the area of the ball (1 ^C ) adjacent to the constriction (1) is in an inner spherical cap-shaped bearing surface (2 ^e ) of the end wall (2 ^a ) a type of union nut (2), the side wall (2) of which has a radial recess (2 ^{C ) open towards the end wall bore (2 a} ) for receiving the; Constriction (1) of the tubular body (1) has, stored and in each setting position of the tubular body (1) to the union nut (2) against the bearing surface (2 ^e ) of the union nut (2) by a hollow threaded connector (3, 3) penetrating its internal thread ^a ) is pressed. 2.) Screw connection according to claim 1, characterized in that the union nut (2) on the one hand and the threaded connector (3) on the other hand on their outer surfaces their rotation-promoting means, such as Z ₉ B. edge surfaces, each have a wrench attack. 714267429.11.73 3.) Screw connection according to claim 1 oci ^p1 "2, characterized in that the aie ball (1 ^C ) has a ring-shaped end face of the threaded connector (3) which widens conically towards this, preferably dome-shaped, end face (3). 4. ) Screw connection after. Claim 1, 2 or 3, characterized) that the ball (1 ") is approximately at the level of the The center of the ball is divided into two parts (1,1) in a dividing plane B - B running perpendicular to the center line (1) Can also be pivoted with respect to the stationary tubular body (1) Ln in the plane BB, as long as the two parts (2, 3) are not firmly clamped against one another. 5.) VeiHcbrauliung according to claim 1 and one or more of claims 2 to 4, characterized in that the threaded connector (3) at the same time as known per se liquid-tight inlet nozzle, if necessary ! with plague tensioning device for an enclose the cable the protective tube is designed " 714267429.11.73 6.) Screw connection according to claim 1 and 5 »characterized in that the threaded connector (3) as a double nipple γ, ιιπ ^ γ, 'γ, ιΙΛπ + -ir. + rankr.i Ά .3 · »> KiiRniin Πηΐϊίϋ ^ Λ« fci ti * ü ä =! vs Λ Sealing or sealing cap (4) carries. For the Anaaelderin Patent attorney 714267429.11.73