Elastic joint

Abstract

Elastic joint comprising:—an inner ring (1) provided with an axial opening (11) for being mounted on a shaft “E” and with an outer surface having: two opposite intermediate sections (13) having a decreasing cross-section towards opposite ends of said inner ring (1) and forming supporting zones for the metal wire cushions (3), and two end sections (14) having a smaller cross-section than the central section;—an outer ring (2) provided with an outer cylindrical surface (21) for mounting the ring to on a support (S) and with an inner surface with two intermediate portions (22) having a decreasing cross-section towards opposite ends of the outer ring (2), facing the intermediate sections (13) of the inner ring (2); and—metal wire cushions (3) arranged between the inner ring and the outer ring (2).

Claims

1. An elastic joint comprising: an inner ring (1) provided with an axial opening (11) for mounting the joint on a shaft “(E)” and an outer ring (2) provided with an outer surface (21) for mounting the joint on a support (S) to be damped and metal wire cushions (3) arranged between the inner ring and the outer ring (2) and forming damping and anti-friction means; characterised in that: the inner ring (1) comprises an outer surface having: two opposite intermediate sections (13) having a decreasing cross-section towards opposite ends of said inner ring (1) and forming supporting zones for the metal wire cushions (3), and two end sections (14); and the outer ring (2) has an inner surface with two intermediate portions (22) having a decreasing cross-section towards opposite ends of the outer ring (2), facing the intermediate sections (13) of the inner ring (2) and forming the contact surfaces of the outer ring (2) with the metal wire cushions (3).

2. The elastic joint, according to claim 1, characterised in that the intermediate sections (13) of the inner ring (1) have a truncated cone or truncated pyramid configuration and are delimited by protrusions (15) forming retaining stops for the metal wire cushions (3) in the position of use of the elastic joint.

3. The elastic joint, according to claim 1, characterised in that the intermediate portions (22) of the outer ring (2) are delimited by protrusions (23) forming retaining stops for the metal wire cushions (3).

4. The elastic joint, according to claim 1, characterised in that the intermediate sections (13) of the inner ring (1) have a series of recesses (16) forming seating and stabilising areas for the metal wire cushions (3).

5. The elastic joint, according to claim 1, characterised in that the outer ring (2) is formed by two annular pieces (2a, 2b) facing in an axial direction and having at opposite ends complementary threaded portions for their attachment by screwing and for adjustable tightening of the cushions (3).

6. The elastic joint, according to claim 1, characterised in that the inner ring (1) comprises a central section (12) arranged between the intermediate sections (13).

7. The elastic joint, according to claim 6, characterised in that it comprises additional metal wire cushions (4) mounted between the central section (12) of the inner ring (1) and a central area of the outer ring (2).

8. The elastic joint, according to claim 1, characterised in that the outer surface (21) for mounting the joint on the support (S) to be damped is cylindrical.

Description

DESCRIPTION OF THE FIGURES

(1) In order to complement the description that is being carried out and with the purpose of facilitating the understanding of the features of the invention, the present description is accompanied by a set of drawings wherein, by way of a non-limiting example, the following has been represented:

(2) FIG. 1 shows a front elevational view of an embodiment example of the elastic joint according to the invention.

(3) FIG. 2 shows a side view of the elastic joint of the previous figure.

(4) FIG. 3 shows an exploded elevational view of the inner and outer rings of the joint and of two of the metal wire cushions mounted between the intermediate sections of the inner ring and the intermediate portions of the outer ring; the outer ring being formed by two annular pieces, which can be attached by screwing, which have been depicted uncoupled.

(5) FIG. 4 shows an elevational view of the elastic joint of the previous figures mounted and sectioned along a vertical plane and in position of use.

(6) FIG. 5 shows a perspective view of an embodiment variant of the inner ring having, in the intermediate sections, seats for mounting the metal wire cushions.

(7) FIG. 6 shows an elevational view, sectioned by a vertical plane and in position of use, of an embodiment variant of the elastic joint according to the invention, incorporating additional metal wire cushions arranged between the central section of the inner ring and the outer ring.

PREFERRED EMBODIMENT OF THE INVENTION

(8) In the example embodiment shown in the accompanying figures, the elastic joint of the invention comprises: an inner ring (1), an outer ring (2) and metal wire cushions (3) arranged between the two and forming damping and anti-friction means.

(9) The inner ring (1) is provided with an axial opening (11) for mounting the joint on a shaft “E”, as shown in FIG. 4, and with an outer surface having: a central section (12); two opposing intermediate sections (13) having a decreasing cross-section towards opposite ends of said inner ring (1); and two end sections (14) having a smaller cross-section than the central section.

(10) The two intermediate sections (13) of the inner ring form zones for supporting the metal wire cushions (3), which, in the position of use of the joint shown in FIG. 4, are arranged between said inner ring (1) and the outer ring (2).

(11) In the embodiment example shown in FIGS. 3 and 4, the intermediate sections (13) of the inner ring (1) have a truncated cone configuration and are delimited by protrusions (15) forming retaining stops for the metal wire cushions (3) in the position of use of the elastic joint.

(12) In the embodiment variant shown in FIG. 5, the intermediate sections (13) have a series of recesses (16) forming seating and stabilising areas for the metal wire cushions (3).

(13) In the example embodiment shown in FIGS. 1 to 4, the outer ring (2) has a cylindrical outer surface (21) for mounting the joint on a support (S) to be damped, as shown in FIG. 4; and an inner surface with two intermediate portions (22) of decreasing cross-section towards the opposite ends of the outer ring (2) and facing the intermediate sections (13) of the inner ring (1).

(14) These intermediate portions (22) having a truncated cone configuration, form the contact surfaces of the outer ring (2) with the metal wire cushions (3). Said intermediate portions (22) are delimited by protrusions (23) forming retaining stops for the metal wire cushions (3).

(15) In the embodiment shown in FIGS. 3 and 4, the outer ring (2) is formed by two annular pieces (2a, 2b) facing in an axial direction and having at opposite ends complementary threaded portions for their mutual attachment by screwing, in the position of use, as shown in FIG. 4.

(16) In the embodiment variant shown in FIG. 6, in addition to the metal wire cushions (3) arranged on the intermediate sections (13) of the inner ring (1), the joint has additional metal wire cushions (4) mounted on the cylindrical central section (12) of the inner ring (1). Said additional cushions (4) make it possible to increase significantly the strength of the joint to radial loads.

(17) Once the nature of the invention as well as an example of preferred embodiment have been sufficiently described, it is stated for all pertinent purposes that the materials, form, size and arrangement of the elements described are susceptible to changes, provided these do not involve an alteration of the essential features of the invention that are claimed subsequently.