FR2533171A1 - HITCH HITCH - Google Patents

Abstract

THE INVENTION RELATES TO A SADDLE HITCH. IN THIS HITCH WITH A SADDLE CONTAINING A PLATE 1 IN A SLOT 7 WHICH CAN BE PROVIDED A COUPLING PIVOT 9, A COUPLING CLAW 3, A LOCKING LEVER 12 AND A RELEASE BAR 17 MOUNTED ON A JOINT 21, A SECOND ARTICULATION 25 IS PROVIDED ON THE HOOK 13 FOR AN UNLOCKING BAR 17A, THIS ARTICULATION BEING LOCATED OPPOSITE THE ARTICULATION 21 WITH RESPECT TO THE ROTATION AXIS 14 OF THE HOOK, THE TWO BARS 17, 17A BEING CONNECTED TO THE HOOK BY ONE OR THE OTHER OF THE JOINTS. APPLICATION IN PARTICULAR TO SEMI-TRAILER MOTOR VEHICLE COUPLINGS.

Description

The invention relates to a fifth wheel harness comprising a plate of

harness, in which is provided

  an insertion slot through which a swivel

  may be introduced along the longitudinal axis of the vehicle, a coupling claw and a locking hook, which may pivot respectively around

  axes of rotation, and an unlocking bar that

  father with the lock hook through

of a joint.

  The usual fixed fifth wheel couplings

  must be mounted in a fixed position at an adjoining

  As a result, the provision of the release bar

  However, it may happen that this position is

  inappropriate for the operator, so that he can not

  to manipulate this bar with great difficulty Such an unfavorable position may be present especially when

  the handle of the locking bar is located vertically

above a wheel.

  In view of the fact that vehicles do not circulate on the right in all countries,

  the side of the longitudinal axis of the vehicle, on the

  which the unlock bar protrude, can be important.

  The present invention aims to provide

  a solution in this area and, starting from the state

  of the technique according to Swiss Patent No. 595,236, -

  to propose a fifth wheel, in which

  There are many ways to support the bar

  unlocked, and this essentially without

plementary.

  This problem is resolved in accordance with the

  thanks to the fact that on the locking hook

  is present a second articulation provided for a bar-

  re unlocking and which is disposed opposite the first hinge, relative to the axis of rotation of the locking hook, and that one of the two bars

  lock is connected via the first

  first or second latch hook

  lage. It is then possible, with a simple modification of the arrangement of constituent parts

  to get four different layouts from the bar of de-

  in two positions on each side of the longitudinal axis of the vehicle. It is therefore unnecessary to manufacture other forms of

  carried out for countries in which the conduct is

  When the control arrives, the lock bar can be mounted at the factory

  the appropriate position This leads to a smaller number of

  Many rooms and therefore a lower storage volume. This also reduces manufacturing costs.

  Other features and advantages of the pre-

  invention will emerge from the description given below.

  after reference is made to the accompanying drawings, in which: FIG. 1 is a plan view of the underside of a fifth wheel coupling according to the invention, in which the unlocking bar represented by a

  The dashed line consists of a variant of

  tion; and FIG. 2 shows a plan view of the fifth wheel coupling of FIG. 1, in which the same parts are arranged in a symmetrical inverted position.

  Figure 1 shows a plateau of salt

  lette 1, on which is mounted a coupling claw 3 journalled so as to be able to turn around a

  axis of rotation 2 The coupling claw 3 is used to

  hold a coupling pin 9 inserted through a slot

  insertion 7 along the longitudinal axis 8 of the vehicle.

  To achieve the locking of the claw 3 when the kingpin 9 is in the state introduced into the slot, a locking hook 13 is used which is rotatably mounted about an axis of rotation 14 The axes of rotation 2 and 14 are

  preferably by pivots which are screwed or

  The drawings show how the coupling claw 3 and the locking hook engage one into the other. This is a known type.

  which is also described for example in the US Pat.

is 595 236 indicated above.

  An unlocking bar 17 provided with a

  handle 18 is connected via an articula-

  21 or from an articulation point to an extension 22

locking hook 13.

  A second hinge 25 is provided on the locking hook 13, and this on the opposite side of the first hinge 21 relative to

  the axis of rotation 14 An unlocking bar 17 has

  presented by a dashed line can now be connected via the hinge 25 to the locking hook 13 The unlocking bar 17 has protruded to the right in Figure 1, while the unlocking bar 17 protrudes to the left It is advantageous to arrange the joints 21, 25 in such a way that one can use a single

  unlock bar for these two forms of

described.

  It is also possible to arrange

  metrically the unlocking bars 17 and 1 ia, as shown in Figure 2 For this purpose, the locking hook 13 is mounted around the axis of rotation or the pin 2 and the coupling claw 3 is mounted

  around the axis of rotation or nipple, 14 In order to obtain

  this form of realization, it is necessary that the right

2533 X 71

  imaginary passing through the axes of rotation 2 and 14 is perpendicular to the longitudinal axis 8 of the vehicle, and that the axes of rotation 2, -14 are located at the same

  distance from the longitudinal axis 8 of the vehicle Avantageu-

  The coupling claw 3 and the locking hook 13 are made without a stepped portion, so that the median planes, which are perpendicular to

  their axes of rotation 2, 14, and therefore, their.

  common abutment area are located in the same plane.

  As indicated above, the

  same unlock bar can have four positions.

  In any place where the unlock bar can be

  placed, is provided a leg 28 or 28a, 28b, 28c.

  The realization of such a foundry paw constitutes

  a little extra cost.

  There are four stop cams 29, 29 a,

  29 b, 29 c, in all places where the unlock bar

  can be placed These cams-stop 29, 29 a, 29 b,

  29 c can be made advantageously by casting.

  But it is also possible to fix these cams by screwing. It goes without saying that, also, the springs 32, 33, by means of which the locking hook 13 and the coupling claw 3 are connected respectively by means of corresponding hooks 34, 35 to the fifth plate 1, are placed in a new

corresponding provision.

Claims (6)

  1 Fifth-wheel coupling comprising a fifth wheel plate (1), in which is provided a   insertion slot (7), by means of which a pivot of ac-   couplemert (9) can be introduced along the longitudinal axis (8 j of the vehicle, a coupling claw   (3) and a locking hook (3) which can   respectively about axes-of rotation (2,14), and an unlocking bar (17), which cooperates via a hinge (21) with the locking hook, characterized in that on the hook lock (13) there is a second hinge (25) provided for an unlocking bar (17a) and which is mounted opposite the first hinge (21) relative to the axis of rotation (14) of the hook unlocking, and that one of the two unlocking bars (17, 17a) is connected either via the first hinge or via the   second articulation to the locking hook.   2 fifth wheel coupling according to claim 1, characterized in that there is provided a single bar   unlocking (17.17a) for both pos- sible.   3 fifth wheel coupling according to any   as in claims 1 and 2, characterized in that the   imaginary line passing through the axes of rotation (2,   14) of the coupling dog (3) and the lock hook   (13) is perpendicular to the longitudinal axis (8) of the   vehicle and that the axes of rotation are at the same distance this longitudinal axis.   4 fifth wheel coupling according to any   Claims 1 to 3, including a tab (28)   placed on the edge of the fifth wheel plate for fixing   of the unlocking bar, characterized in that up to four legs (28, 28, 28, 28   locations where the unlock bar can be disengaged   asked. Fifth-wheel coupling according to one   conque of claims 1 to 4, comprising a cam   stopper (29) for the unlocking bar, characterized in that up to four cams (29, 29a, 29b, 29c) are provided at the locations where the unlocking bar can be arranged.   6 fifth wheel coupling according to the   5, characterized in that the cams (29, 29a, 29b, 29 (c) are made by coulaqe.   7. Fifth coupling according to the claim   5, characterized in that the cams (29, 29a, 29b, 29c) can be fixed by screwing.