EP2526828B1 - Joint fitting, in particular for furniture - Google Patents

Description

The invention relates to a continuously lockable hinge fitting, in particular for backrests, armrests or headboards of sitting and / or lying furniture.

Such a hinge fitting is from the US 3 216 766 A1 known.

It is provided a hinge fitting according to claim 1, whereby a einfä-cher and space-saving construction of a hinge device is possible with successful production costs.

Fig. 1

eine Ansicht des Beschlags,

Fig. 2

eine Ansicht der Einzelteile des Beschlags,

Fig. 3

eine Seitenansicht des Beschlags von links in Fig. 1,

Fig. 4

verschiedene Stellungen des Beschlags,

Fig. 5

Stellungen der Mitnehmerscheibe relativ zur Gelenklasche,

Fig. 6

eine abgewandelte Ausführungsform einer Haltelasche,

Fig. 7

eine weitere Abwandlung der Haltelasche,

Fig. 8

eine andere Ausführungsform einer Gelenklasche,

Fig. 9

eine weitere Ausführungsform einer Mitnehmerscheibe, und

Fig. 10

zwei verschiedene Schwenkstellungen einer Ausführungsform nach Fig. 6 bis 8.

The invention will be explained in more detail for example with reference to the drawing. Show it

Fig. 1

a view of the fitting,

Fig. 2

a view of the items of the fitting,

Fig. 3

a side view of the fitting from the left in Fig. 1 .

Fig. 4

different positions of the fitting,

Fig. 5

Positions of the drive plate relative to the joint pocket,

Fig. 6

a modified embodiment of a retaining tab,

Fig. 7

a further modification of the retaining tab,

Fig. 8

another embodiment of a joint flap,

Fig. 9

a further embodiment of a drive plate, and

Fig. 10

two different pivot positions of an embodiment according to Fig. 6 to 8 ,

Fig. 1 shows a plan view of an embodiment of the fitting whose items in Fig. 2 are reproduced. The fitting has an elongate hinge tongue 1, for example, an elongated retaining tab 2 in this exemplary embodiment and two driver discs 3 and 3 'between the two tabs (FIG. Fig. 2 and 3 ) on. 4 with a fixed to the retaining tab 2 pivot pin is referred to in Fig. 2 is shown in a side view, and with a 5 attached to the driver disks 3 driving pin, the Fig. 2 in a side view shows.

The hinge flap 1 forms a first tab and the retaining tab 2, a second tab, wherein the elongate tabs can be shaped differently in adaptation to the relatively pivotable components Here, the one tab may have a different shape than the other tab

The hinge flap 1 has at one end a bearing portion 1a and this opposite a mounting portion 1c with holes 1b for attachment to an armrest, a headboard or other movable furniture part, while the retaining tab 2 via holes 2b on a mounting portion 2c with a stationary part of Furniture is connected for example by means of screws. The bearing portion of the retaining tab 2 is denoted by 2a.

The joint flap 1 is furthermore provided on the bearing section 1a with a bore 1.1 ( Fig. 2 ), distributed on the circumference in the embodiment of the Fig. 1 to 5 three elongate recesses 1 2 are formed, which are aligned approximately tangentially to the circumference of the bore 1.1 and in which in each case acted upon by a compression spring 13 a cylindrical pin 13 (FIG. Fig. 2 ) is so arranged, cylinder pin 13 clamps with its circumference on the circumference of the pivot pin 4 when the hinge flap 1 in a clockwise direction in Fig. 1 is to be pivoted while the retaining tab retains its position, serving as a clamping element cylinder pin 13 is clamped with its circumference by the obliquely or wedge-shaped to the circumference of the bore 1.1 recess 1.2 on the outer circumference of the pivot pin 4.

At the end of the elongated recess 1.2, on which the spring is supported 1.3a, a projection 13b for holding the compression spring 13a is provided in each case, wherein the compression spring 13a allows a release movement of the clamping pin 13 from the circumference of the pivot pin 4 away.

On the circumference of the bore 1.1 in the joint flap 1 is also between two recesses 1.2 slightly offset from the longitudinal axis L of the hinge flap 1 formed an approximately slot-shaped control recess 1.3, which extends transversely to the hinge flap 1 and in a section 5.1 of the drive plates on the third and 3 'fastened driving pin 5 engages the driving pin 5 is along the circumference of the bore 1.1 over the length the slot-shaped recess 1.3 movable to the pivoting movement Fig. 4 to Fig. 4a to perform, as explained in more detail below.

The axial length of the driving pin 5 corresponds to the thickness of the joint lug 1 and the thickness of the two driver disks 3 and 3 ', while the two end portions 5.2 with reduced diameter of the depth of the arcuate groove 2.2 at the two bearing portions 2a and 2a' of the retaining tab 2 and approximately correspond to the depth of a corresponding recess 2.2.

The diameter of the section 5.1 of the driving pin 5 corresponds to the diameter of the bore 3.3 in the drive plate. 3

The retaining tab 2 has on the bearing portions 2a and 2a 'on a bore 21 for receiving an end 4.1 of the pivot pin 4. To the central bore 2.1 extends in the illustrated embodiment, about 90 ° at a radial distance from the bore 2 1, an arcuate groove or opening 22 into which the end portion 5.2 of the driving pin 5 engages, said end portion 5.2 has a smaller diameter than that central section 5.1.

The side view of the fitting in Fig. 3 from the left in Fig. 1 shows the formed as a straight surface piece joint flap 1, the bearing portion 1a between two spaced bearing portions 2a and 2a 'of the retaining tab 2 engages, which is composed in the illustrated embodiment of two plate-shaped elements 2 and 2', the bearing portions 2a and 2a 'formed opposite cranked are, so that between the two bearing sections 2a and 2a 'a receiving space for two driver disks 3 and 3' remains, which are arranged on either side of the bearing portion 1a of the joint flap 1.

The pivot pin 4 ( Fig. 2 ) has on the two sides of a central portion 4.2 with a larger diameter in each case a section 4.3 with a smaller diameter, to which in each case the end section 4.1 followed by a smaller diameter, in the holes 2.1 of the two cranked bearing sections 2a and 2a 'of the retaining tab 2 is used. The sections 4.3 of the pivot pin 4 engage in a bore 3.1 of the driver disks 3 and 3 'rotatably and the central portion 4.2 is located in the bore 1.1 of the joint flap 1, wherein on the circumference of the central portion 4 2, the clamping elements 13 of the hinge flap 1 act. The diameter of the bore 1.1 corresponds to the diameter of the central portion 4.2 of the pivot pin 4th

Characterized in that the clamping device is formed between joint bracket 1 and pivot pin 4 on the inner circumference of the bore 1.1, the bore 1.1 can have a relatively large diameter with the advantage that also the corresponding engagement portion 4.2 of the pivot pin 4 for the clamping elements 13 has a relatively large diameter may have, whereby the wear of the hinge fitting is kept low

The pivot pin 4 is rotatably disposed with its end sections 4.1 in the bearing sections 2a and the holes 2.1 of the retaining tab 2 so that it forms a unit with the retaining tab 2. The axial length of the pivot pin 4 corresponds to in Fig. 3 reproduced thickness dimension between the outer sides of the bearing portions 2 a and 2 a 'of the retaining tab. 2

The driver disks 3 and 3 'have on a radially projecting extension 32 a bore 3.3, in which engages the central, provided with a larger diameter portion 5.1 of the driving pin 5. On the circumference of the driver disks 3 and 3 'camshaft elevations 3.4 are formed according to the arrangement of the clamping elements 13 of the joint flap 1, which cooperate with serving as clamping elements cylinder pins 13, as shown in the Fig. 5 is explained

The profile on the circumference of the driver disks 3 and 3 'in the form of the flat elevations 3.4 is formed so that by a relative rotation of the driver disks 3 and 3' relative to the clamping device formed on the circumference of the bore 1.1 of the joint clip 1 a clamping between driving disks , 3 'and joint flap 1 is formed such that the clamping elements 13 are moved out of the clamping position with the engagement portion 42 of the pivot pin 4 by this clamping between driving plates and joint flap. In other words, the clamping device is designed such that it allows on the one hand a clamping between joint bracket 1 and pivot pin 4 in a pivoting direction of the joint flap and on the other a clamping between the drive plates 3 and 3 'and the joint flap 1, while not in clamping connection with the pivot pin 4 is.

In a first end or initial position in Fig. 4 who are in the position Fig. 1 corresponds, in which the two tabs 1 and 2 are in a line, the driving pin 5 is with its portion 5 2 at the left end of the arcuate recess 2.2 of the retaining tab 2, so that the drive plates 3 and 3 ', where the driving pin 5 in Pivoting direction is fixed, not further counterclockwise to the left in Fig. 4 can be pivoted. The larger diameter portion 5.1 abuts close to the left end of the slot-shaped control recess 1.3 of the hinge lug 1 or at the left end thereof, while the in Fig. 4 not reproduced clamping elements 13 in front of the elevations 3.4 of the driver disks 3 and 3 'are, so that the clamping elements 13 can engage with the circumference of the engaging portion 4.2 of the pivot pin 4 .. In this way, a pivotal movement of the joint flap 1 clockwise in Fig. 4 prevented by the clamping action of the clamping elements 13.

Fig. 5 shows the position of the cam-shaped elevations 3.4 of the driver disks 3 and 3 'relative to the opening on the circumference of the bore 1.1 recesses 1.2, in which the cylinder pins or clamping elements 13 are arranged. In the position of Fig. 5 will be in Fig. 5 Not shown clamping elements 13 are not acted upon by the elevations 3.4, so that the joint flap 1 from the position in Fig. 5 who are in the position Fig. 4 corresponds, can not be pivoted clockwise, because the clamping elements 13 wedge on the circumference of the section 4.2 of the pivot pin 4.

When the joint flap 1 from this first end position in Fig. 4 in the second end position in Fig. 4c to be moved, wherein the attached to the joint flap 1 furniture part is pivoted clockwise relative to the retaining tab 2, the hinge flap 1 is first pivoted about 10 to about 15 ° in the counterclockwise direction, as this Fig. 4a and 5a show, wherein the clamping elements 13 are wedged by the surveys 3.4 of the drive plates 3 and 3 'between the joint flap 1 and drive plates 3 and 3', while the clamping elements 13 are adjusted relative to the hinge flap 1 against the springs 13a acting on them, ie the circumference of the engaging portion 4.2 be pushed away, so no clamping engagement in Fig. 5a between joint bracket 1 and pivot pin 4 is present, but only a clamping engagement between joint bracket 1 and drive plates 3 and 3 '. This pivotal movement of the joint flap 1 in the counterclockwise direction is made possible by the slot-like control recess 1.3 relative to the driver disks 3 and 3 ', wherein the control recess 1.3 is formed correspondingly shorter in the circumferential direction than the arcuate groove 2.2 in the retaining tab. 2

By the pivoting movement of the joint flap 1 of Fig. 5 to Fig. 5a or from Fig. 4 to Fig. 4a counterclockwise thus the clamping elements 13 are pressed by the hinge flap 1 on the wedge surfaces acting as surveys 3.4 of the fixed drive plates 3 and 3 ', while the clamping elements 13 solve relative to the hinge flap 1 against these acting springs from engagement with the pivot pin 4.

From the position in Fig. 4a who are in the position Fig. 5a corresponds, the joint flap 1 in the second end position in Fig. 4c can be pivoted by 90 ° corresponding to the length of the groove 2.2 in the retaining tab 2, because the clamping elements 13 can no longer engage with the engaging portion 4.2 of the pivot pin 4 through the clamping connection between the driver discs 3, 3 'and joint clip 1 They are in the clamping position held between drive plates 3, 3 'and joint flap 1, so that in the pivoting movement in the clockwise direction, the driver disks 3, 3' rotate with the hinge lug 1 to the stationary pivot pin 4, such as Fig. 4c shows.

When reaching the end position in Fig. 4c come the end portions 5 2 of the driving pin 5 at the ends of the arcuate groove 2.2 to rest, causing the drive plates 3, 3 'are moved relative to the hinge flap 1 in the counterclockwise direction, so that the wedge-shaped elevations 3.4 are released from the clamping elements 13 and the clamping engagement between joint flap 1 and drive plates 3, 3 'is released. As a result, the relative position between drive plates 3, 3 'and recesses 1.2 corresponds to the joint flap 1 of FIG Fig. 5 ,

From this second end or starting position in Fig. 4c the joint flap 1 can be pivoted with the attached furniture part continuously in a desired intermediate position in which the joint flap 1, for example, occupies an angle of about 120 ° to the retaining tab 2, like this 4b shows.

In the pivoting movement of the joint flap 1 in the counterclockwise direction from the position of Fig. 4c in the intermediate position in Fig. 4b The clamping elements 13 through the engagement portion 4.2 of the pivot pin 4 is pressed against the springs 13 a acting on them, so that the clamping action does not occur.

When reaching the desired intermediate position eg in Fig. 4b the joint flap 1 is secured against rotation back in a clockwise direction by the clamping engagement between the pivot pin 4 and clamping elements 13. Counterclockwise, the joint flap 1 but from the intermediate position in Fig. 4b z B to the end position in Fig. 1 or pivoted to another intermediate position, in which the joint flap 1 is again secured against rotation in a clockwise direction by the clamping elements 13, which wedge on the engaging portion 4.2 of the stationary or on the retaining tab 2 fixed pivot pin 4.

The cylindrical pins 13 extend over the thickness of the hinge lug 1 and substantially over the thickness dimension of the two driver disks 3 and 3 ', with the circumferential curve at 3.4 they engage by the fact that the cylinder pins 13 on opposite sides of the hinge lug 1 with the two drive plates 3 and 3 'engage, they have a stable position, in particular in the engagement phase, so that they can not tilt in the recesses 1.2, as may be possible in a one-sided embodiment, in which the cylinder pins 13 only on one side of the joint flap Protrude 1 and engage with only one drive plate 3 in engagement.

The pivoting range of the hinge fitting or the pivoting range of the hinge flap 1 relative to the retaining tab 2 can be specified by the length of the arcuate recess 2.2 on the bearing portion 2a of the retaining tab 2. In the reproduced embodiment, the angular distance between the ends of the arcuate recess 2 2 is selected so that a pivoting range of the joint flap 1 of about 90 ° between the positions in Fig. 4 and Fig. 4c results. By a greater or lesser length of the arcuate recess 2.2, the pivoting range of the joint flap 1 can be made larger or smaller.

There are various modifications to the described design possible Thus, for example, the Klemmeimichtung be formed with the spring-loaded wedge or clamping elements in the form of the cylindrical pins 13 in another way to a blocking effect of To prevent pivotal movement of the joint flap 1 in the one direction of rotation relative to the pivot pin 4 and to allow a rotational movement in the opposite direction

The design of the driver disks 3, 3 'as controls for the clamping elements 13 may on the circumference also have a different shape than the wedge-shaped elevations 3.4, at which the clamping elements 13 between joint bracket 1 and drive plates 3, 3' are wedged vezkeilt.

Furthermore, modifications are possible such that, for example, the control recess 1.3 is smaller on the circumference of the bore 1.1 of the joint flap 1, so that the smaller diameter section 5.2 of the driving pin 5 in the control recess for limiting the short pivoting movement of Fig. 4 to Fig. 4a intervenes.

The slot-shaped control recess 1.3 opens on a longitudinal side in the bore 1.1 of the joint flap 1 It is arranged with its center between adjacent recesses 1.2 of the hinge flap 1 so that its center has approximately the same distance from the adjacent recesses 1.2. The offset of the control recess 1.3 to the longitudinal axis L ( Fig. 2 ) corresponds to the angular range of the pivoting movement between the positions of the 4 and 4a respectively. Fig. 5 and 5a

Fig. 6 shows a modified embodiment of a retaining tab 2, in which around the bore 2 1 at the bearing portion 2a instead of an arcuate groove 2 2 in the embodiment of the Fig. 1 to 5 an arcuate cut 2.20 is formed on the circumference of the bearing portion 2a. In other words, the arcuate groove is 2.2 in Fig. 2 designed radially open to the outside, so that only the ends remain on the groove as stops for the section 5.2 of the driving pin 5.

Fig. 6a shows a length of the arcuate recess 2 20, which is shorter than the length of the groove 2.2 in Fig. 2 , which runs over about 90 °

Fig. 6b shows an offset arrangement of the recess 2 20 in the circumferential direction relative to Fig. 6a , Which results in a different pivoting range of the joint flap 1 and the hinge fitting

Fig. 6c shows a length of the recess 2.20 corresponding to the length of the groove 2.2 in Fig. 2 over about 90 °.

Fig. 7 shows a modified embodiment of a retaining tab 2 corresponding to the retaining tab in Fig. 6a , wherein the bore 2.1 is formed as a square opening 2.10 Accordingly, in this embodiment, the retaining tab 2 of the end portion 4.1 ( Fig. 2 ) of the pivot pin 4 is not cylindrical, but formed as a square, so that by the engagement of the square section 4.1 in the square opening 2 10 a rotationally fixed connection between the pivot pin 4 and retaining tab 2 is formed. Such a configuration is also in the first embodiment according to the Fig. 1 to 5 possible.

The holding force of the hinge fitting is determined by the clamping engagement of the clamping elements or cylindrical pins 13 on the circumference of the clamping portion 4.2 of the pivot pin 4, which is firmly connected to the retaining tab 2

Fig. 8 shows a further embodiment, which is designed for higher loads. For this purpose, the joint flap 1 is provided on the circumference of the bore 1.1 on the bearing portion 1a with five oblique recesses 12, in each of which a clamping element or cylindrical pin 13 is arranged. The engagement of five cylindrical pins on the circumference of the engaging portion 4.2 of the pivot pin 4 results in a higher holding force of the hinge fitting in a set pivot position, in which the joint flap 1 is held in its relative position to the retaining tab 2 by the clamping engagement.

While in the embodiment of the joint flap 1 in Fig. 2 the three recesses 1.2 are arranged at equal angular intervals around the bore 1.1, the recesses have 1.2 in the embodiment according to Fig. 8 with each other the same angle, wherein the control recess 1.3 adjacent recesses 1.2 have a greater distance from each other, so that there is sufficient space for the slot-shaped control recess 1.3.

FIG. 9 shows a modified embodiment of a drive plate 30. The bore 3.1 in the middle of the drive plate 30 and arranged at a radial distance thereof bore 3 3 corresponds to the holes 3.1 and 3 3 in Fig. 2 , At a radial distance from the circumference of the central bore 3.1 are in the drive plate 30 in Fig. 9 five Chambers 31 formed, the positioning of the position of the recesses 1.2 on the bearing portion 1 a of the hinge flap 1 corresponds According to the diameter of the drive plate 30 in Fig. 9 is greater than the drive plate 3 in Fig. 2 , The chambers 31 serve to ensure that the clamping device is not hindered at the joint flap 1 by the drive plate 30 and the drive plate 30 provides sufficient space for the movement of the cylindrical pins 13 and the springs 13 a acting on them

In each of the chambers 31, a cam-shaped radial elevation 3.4 is formed on the Innenumfäng, as with the drive plate 3 in Fig. 2 the case is. The larger diameter of the drive plate 30 ensures greater stability over the embodiment in FIG Fig. 2 ,

Fig. 10 shows a hinge fitting of the second embodiment according to Fig. 6 to 8 in two positions, the driver disks 30 are not reproduced. There are only shown the joint flap 1 and the retaining tab 2 in two relative positions to each other, wherein the pivot pin 4, not shown, in a bore 2.1 or in a square opening 2.10 can be attached to the retaining tab 2.

While Fig. 4 and 5 a stationary retaining tab 2 and a pivoted relative thereto hinge flap 1 is in FIG. 10 the joint flap 1 as a stationary tab and the retaining tab 2 as relative to this pivoted tab reproduced.

In other words, the movement of the fitting in FIG. 10 reverse to the movement of the fitting in the first embodiment Fig. 1 to 5 , or the joint flap 1 can for example be attached to a stationary furniture part and the retaining tab 2 on the movable furniture part.

The two positions in Fig. 10a and Fig. 10b correspond to the end positions of the pivoting range of the hinge fitting, which by the length of the recess 2 20 in Fig. 6c is determined. In Fig. 10a in which the two tabs 1 and 2 are approximately at an angle of 90 ° to each other, the driving pin 5 is located at the left end of the control recess 1.3, while the end portion 5.2 with a smaller diameter at the in Fig. 10a right end of the recess 2.20 is applied.

In Fig. 10b is the end 5 2 of the driving pin 5 at the left end of the recess 2 20, while the driving pin 5 in the recess 1.3, the same position as in Fig. 10a occupies.

The hinge fitting described, which is infinitely lockable in a pivoting position, can be used not only for furniture parts, but also for other relatively pivotable components or elements.

The driver element or the driver disk 3, 30, which releases the engagement of the clamping element 13 with the circumference of the pivot pin 4 and clamps the clamping element 1.3 to the driver element, as long as the engagement of the clamping element 13 is solved with the circumference of the pivot pin 4, only needed a small swivel range, such as between Fig. 4 and Fig. 4a Here, the clamping element or, the cylindrical pin 13 is raised by the circumference of the hinge pin 4 and the engagement section 4.2 in the radial direction by the cam-like elevation 3.4 to the drive plate to release the clamping engagement with the pivot pin 4 ,

Claims (14)

1. Jointed fitting, especially for movable furniture parts such as armrests, head parts and the like, comprising

   - a first bracket (1) which has a bore (1.1) in which a joint pin (4) rotatably engages,

   - a second bracket (2), to which the joint pin (4) is fixed,

   - wherein at least one spring-biased clamping member (13) is arranged on the circumference of the bore (1.1) of the first bracket (1), allowing in the one rotational direction and blocking in the opposite direction a rotational movement of the first bracket (1) relative to the joint pin (4), and

   - an actuator member (3, 30) is provided, which releases the engagement of the clamping member (13) with the circumference of the joint pin (4) and clamps the clamping member (13) to the actuator member.
2. Jointed fitting according to claim 1, wherein an arcuate groove (2.2) or a recess (2.20) in the second bracket (2) is formed around the joint pin (4) for determining the pivoting range, and the actuator member (3, 30) is engaged with this groove (2.2) or with the recess (2.20).
3. Jointed fitting according to claim 2, wherein the actuator member is formed as an actuator disc (3, 30) which is rotatably arranged on the joint pin (4) and is engaged with the arcuate groove (2.2) or recess (2.20) in the second bracket (2) by means of a driving pin (5).
4. Jointed fitting according to claim 3, wherein the actuator disc (3, 30) is engaged with a control recess (1.3) of the first bracket (1) by means of the driving pin (5),
   and the control recess (1.3) has a shorter length than the arcuate groove (2.2) or recess (2.20) around the joint pin (4).
5. Jointed fitting according to claim 3 or 4, wherein the actuator disc (3) has a recess or bore (3.2) on a radial protrusion (3.1), in which recess or bore the driving pin (5) is inserted, which engages the arcuate groove (2.2) or recess (2.20) of the second bracket (2) and the control recess (1.3) on the circumference of the bore (1.1) of the first bracket.
6. Jointed fitting according to claim 1, wherein the at least one clamping member (13) produces a clamping engagement between first bracket (1) and joint pin (4) and a clamping engagement between actuator disc (3) and first bracket (1), while each of the other clamping positions is unengaged.
7. Jointed fitting according to one of the preceding claims, wherein the control recess (1.3) for engagement of the actuator disc (3) is formed on the circumference of the bore (1.1) of the first bracket (1).
8. Jointed fitting according to one of the preceding claims, wherein a wedge-shaped profile (3.4) is formed on the circumference of the actuator disc (3) for engagement with the clamping member (13).
9. Jointed fitting according to one of the preceding claims, wherein the second bracket (2) has spaced-apart support portions (2a, 2a'), between which a support portion (1a) of the first bracket (1) engages, wherein in each case an actuator disc (3, 3') is arranged on each of the two sides of the support portion (1a) of the first bracket (1).
10. Jointed fitting according to claim 9, wherein the joint pin (4) has opposite end portions (4.1) which are connected to the support portions (2a, 2a') of the second bracket (2), and wherein on both sides of a middle engagement portion (4.2) having a large diameter, support portions (4.3) are formed with a smaller diameter for the actuator discs (3, 3').
11. Jointed fitting according to claim 9 or 10, wherein the driving pin (5) has portions (5.2) on opposite sides of a middle portion (5.1), which portions (5.2) engage the arcuate grooves (2.2) of the opposite support portions (2a, 2a') of the holding bracket (2).
12. Jointed fitting according to one of the preceding claims, wherein the clamping members at the first bracket (1) are formed as cylindrical pins (13) which protrude laterally from the plate- or disc-shaped first bracket (1).
13. Jointed fitting according to claim 12, wherein the cylindrical pins (13) are arranged in recesses (1.2) on the circumference of the bore (1.1) of the first bracket (1) such that they are movable with their circumference in a radial direction towards the circumference of the engagement portion (4.2) of the joint pin (4).
14. Jointed fitting according to claim 13, wherein the cylindrical pins (13) are biased by springs (13a) in a manner approximately tangentially inclined to the circumference of the bore (1.1) of the first bracket (1).

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