JP2572341B2 - Synchronous fixed joint - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a joint having a non-undercut outer running groove which is evenly distributed on the peripheral surface.
A bell-shaped joint outer part having an inner chamber , a joint inner part having an inner running groove matching the outer running groove, and a retainer disposed between the joint outer part and the joint inner part. A ball that is held in the window and is received in the inner running groove and the outer running groove and transmits torque; and a non-undercut formation of an inner surface of the joint outer portion disposed between the outer running grooves. Wherein the retainer further comprises a joint inner chamber between the outer running grooves by a ring.
And a synchronous fixed joint of the type fixed to the outside in the axial direction.

[0002]

2. Description of the Related Art German Patent No. 2522670.
It is known from the specification that the cage of a synchronous fixed joint is axially fixed via a support disk fixed on the open side of the outer part of the joint. The problem with this known arrangement is to enable simple assembly by using the joint outer part which is constructed without undercuts. A disadvantage of the described arrangement is that the ball has play in the running path and that only the axial play of the cage can be adjusted. This results in a forced play between the joint inner part, the ball and the joint outer part on one side and the joint inner part, the cage and the joint outer part on the other side.

As a result, two series of play are connected in series, and among these series, FIG.
Only the play in the series, i.e. the axial play between the cage and the outer part of the joint, can be adjusted. DE 33 23 753 A1 also already shows the inner surface of the joint outer part, partly stepped against the spherical outer surface of the cage. However, this document does not disclose any arrangement for adjusting the play. However, play, which gives manufacturing errors that are compounded in the worst case, promotes high wear of the joint.

[0004]

SUMMARY OF THE INVENTION The object of the invention is to define a joint of the type having both the above-mentioned two sets of play and having, at the same time, a retainer placed on top and a ball placed in it in the axial direction. An object of the present invention is to provide a synchronous fixed joint which can be easily assembled by being inserted into the joint.

[0005]

Means for Solving the Problems The means of the invention taken in order to solve the aforementioned problems, the sphere is held without play in the outer running grooves and inner running groove, following the outer joint portion
A ring having at least two fingers which are axially and radially inward in the hand compartment and are held between the two outer running grooves, respectively, against the spherical outer surface of the cage; moiety has between axial interval from the reference surface arranged in the open side of, and coupled with the joint outer part the ring while maintaining a predetermined axial play about the cage, the outer joint part The inner surface located between the outer running grooves is held at a distance from the spherical outer surface of the cage.

[0006]

An advantage provided by the arrangement according to the invention is that the ring is connected to the outer joint part in a position aligned with the retainer by the fingers supporting the retainer. This ensures that all total errors set in the joint are eliminated. Sphere by Yu beauty exists when held without play to the outer running grooves and inner running groove, which is guaranteed to be capable of satisfactory regulation of predetermined axial play. The arrangement according to the invention of the joint provides a clear relationship due to the play present in the joint. Outer part of the joint,
The first play series between the ball and the joint inner part is zeroed and the second play series between the joint outer part, the retainer and the joint inner part is adjustable. For this reason, both sequences of play that are produced are clearly defined. In an advantageous embodiment of the invention, the fingers are arranged radially inward starting from the ring, in which case the fingers
It is bent toward the middle vacancy. The advantage provided by this arrangement is that the ring can be stamped and formed from a sheet metal together with the fingers, and the fingers are bent, which makes the ring significantly cheaper to manufacture.

According to another significant feature of the invention, the fingers are configured as wedge-shaped support inserts which are substantially axially spaced from the ring. This configuration allows the support insert to abut a relatively large surface on the spherical outer surface of the cage. In another embodiment of the invention, the joint outer part has a radially inwardly located recess serving to receive the ring on a radial end face located on the open side thereof, the recess of which is provided. The inner diameter is larger than the outer diameter of the ring. With this configuration, the ring can be simply fixed to the outer part of the joint by welding, in which case the welding can be performed in the axial direction of the joint, for example by means of a laser beam, which makes it possible to automate the welding process. .

[0008] In another configuration, the ring includes a protrusion coaxially gripping the outer peripheral surface of the outer joint portion. Even with this configuration, the ring can be easily welded to the outer portion of the joint. In another advantageous embodiment of the invention, the coaxial projection of the ring is used as a seat for a bellows fixed to the outer part of the joint. In this configuration, the bellows can be fixed in a simple manner to the coaxial projection of the ring. According to another aspect of the invention, the ring has a larger diameter than the outer peripheral surface of the outer joint portion, and the portion of the ring beyond the outer peripheral surface of the outer joint portion is the outer peripheral surface of the outer joint portion. Used as a stopper for bellows fixed to With this configuration, the bellows can be inexpensively and easily fixed to the outer portion of the joint.

[0009] In a preferred embodiment of the present invention, the outer joint portion is provided with at least two grooves extending radially open release side of that, is et to ring, through engagement with the grooves of these and it is held in contact with the outer surface of the spherical retainer. In this configuration, the ring is incorporated within the axial length of the joint outer part, including the fingers, so that there is no maximum buckling reduction here. According to another advantageous configuration, the outer end of the joint at the open end is provided with an annular step on the axially open side, and further radially outwardly formed by the step to receive a ring. There is a free room located. With this configuration, the ring can be easily welded to the outer portion of the joint. In another configuration according to the invention, the ring is made of a flat material that extends in the radial direction and is welded to the outer peripheral surface of the joint outer part by means of a V-seam. Also in this case, the ring can be easily fixed to the outer portion of the joint. In a further advantageous embodiment, ring, is welded to the outer peripheral surface by a fillet seam and have grabbing an outer peripheral surface of the joint Tesotogawa portion, further fingers are bent towards the joint axis.

According to another feature of the invention, the fingers are additionally substantially axially bent towards the center of the joint, starting from an inward radial direction, wherein the bent webs are Conforms to the spherical outer surface. This configuration allows the finger to abut a large surface on the spherical outer surface of the cage. According to another feature of the invention,
The finger is configured as a so-called box as a hollow molded part, and the abutment surface is adapted to the spherical outer surface of the cage. In this configuration, the fingers can support large axial forces acting on the retainer. In another configuration, the finger has a rectangular cross section as a solid molded part, and the surface located radially inward of the finger matches the spherical outer surface of the retainer.

[0011]

EXAMPLES synchronous fixed joint shown in longitudinal section in Figure 1, mainly the outer joint part 1, a joint inner part 2, which consists retainer 3 which, the cage 3 has an outer running grooves The ball 8 held in the inner running groove 15 and the inner running groove 20 is guided in the window without play. Ring 6, in this embodiment provided with a finger 7 which forms a support insert 22 of the wedge, the support insert 22 is two outer running grooves 15 the axial direction of the chamber 25 the joint between the And is held against the spherical outer surface 4 of the cage 3. The abutment surface 11 of the finger 7 of the ring 6 on the spherical outer surface 4 of the retainer 3 allows the ring 6 to be engaged with the outer running groove 15 and the inner running groove 20 without play when the ball 6 abuts on the joint outer part 1. Are arranged so as to have a distance s in the axial direction from the reference planes 21 and 21a arranged on the open side of. The retainer 3 is not in contact with the groove 5 extending outward on the open side of the joint outer part 1 by the fingers 7 forming the support insert 22 supporting the retainer 3 .

In the embodiment according to FIG. 2, the ring 6 has a reference plane.
Spaced with respect to 21, 21 a, the ring 6 is provided with bent fingers 7, which are supported on the spherical outer surface 4 of the holder 3 at the abutment surface 11 of the finger 7 . The ring 6 is made of a flat material extending in the radial direction.
Outside the joint outer part 1 which is made and has a V-seam
Welded on the peripheral surface . As shown in FIG. 3, it is spaced-ring 6 with respect to the reference plane 21,21a
Of the cage 3 with the contact surface 11 of the bent finger 7
The coaxial protruding portion 12 supported on the spherical outer surface 4
Have . In this case, the projection 12 grips the outer joint part 1 and is fixed to the outer surface of the outer joint part 1. The ring 6 grips the outer peripheral surface of the joint outer part 1
And it is welded to the outer peripheral surface by the fillet joint . In the embodiment shown in FIG. 4, the ring 6 is on the reference surfaces 21 and 21a.
The ring 6 is spaced apart from the
The contact surface 11 of the swinger 7 supports the spherical outer surface 4 of the cage 3.
Is held. Ring 6 has an outer diameter that is larger than the outer circumference of the outer joint part 1, a portion projecting outwardly beyond the outer joint part 1 of the-ring 6 is fixed to the outer periphery of the outer joint part 1 Used as a stopper for rose 23. As shown in FIG. 5, the ring 6 is
Ring 6 is bent at a distance from 21a
Of the cage 3 at the contact surface 11 of the finger 7
Is supported on the surface 4, Propelled by one a coaxial protrusion 12 gripping the outer joint part 1, the protruding portion 12 in this embodiment is used as a seat for the bellows 23.

The outer joint part 1 shown in FIG. 6 has a recess 24 located on the open end side . Ring 6
The spherical shape of the cage 3 at the contact surface 11 of the bent finger 7
Is supported on the outer surface 4 . Recess 24 disposed radially inwardly of the outer joint part 1 serves to receive the ring 6, the inner diameter of the recessed portion 24 is larger than the outer diameter of the ring 6, ring 6 alright retainer 3 Spherical outer surface 4
Can be matched. FIG. 7 shows the joint in the embodiment according to FIG. 6, in which the ring 6 has bent fins.
The contact surface 11 of the gir 7 is supported on the spherical outer surface 4 of the cage 3.
It is, are welded to the joint Tesotogawa portion 1. The outer joint part 1 is provided with a pin 14 having a multi-wedge tooth 16 and a threaded hole 19 for fixing. FIG. 8 shows a plan view of the joint according to FIG.
FIGS. 9 to 14 shows the actual施例synchronous fixed joint, in this embodiment, reduction of屈角seat based on placing the ring 6 to the outer joint part 1 is avoided. In FIG. 9, a step 17 is provided on the open end side of the joint outer part 1 to create a free chamber 18 located radially outward. In order to receive the fingers 7, there is provided a groove 5 which extends radially inward starting from the free chamber 18 in which the fingers 7 are arranged and which have an axial No directional projections are provided, and a reduction in joint buckling angle is avoided. FIG. 9b shows a plan view of the embodiment according to FIG. 9a.

In FIG. 10, the ring 6 has a coaxial projection 1.
2, the protrusion 12 grips the outer joint part 1 and is fixed to it by welding. Axis between the ring 6 and the open side of the joint outer part 1
It has an interval s in the direction . FIG. 10b shows the embodiment according to FIG. 10a in plan view. In the synchronous fixed joint shown in FIG. 11, the ring 6 has a coaxial projection 12.
Does the protrusion 12 grip the joint outer part 1
It is fixed by welding to the outer part 1 of the joint .
Finger 7 radially toward the inward has a web 9 which is curved, the web 9 is in contact with the outer surface 4 of the spherical retainer 3. FIG. 11B shows a plan view of FIG. 11A. FIG. 12 shows an embodiment in which the finger 7 is configured as a box-shaped hollow molded member 10.
In this embodiment, the finger 7 is fixed to the ring 6
The spherical outer surface 4 of the cage 3 is
And the most stable configuration of the finger 7 is obtained. In FIG. 13, the finger 7 is the solid molded member 1.
Shown as 3. The ring 6 is
It is supported on the spherical outer surface 4 of the cage 3 by the contact surface 11,
And fillet have grip the outer joint part 1 at the same axial overhangs
The joint is welded to the outer peripheral surface of the joint outer portion 1.
You . FIG. 13B is a plan view of the view shown in FIG. FIG. 14 is a longitudinal sectional view showing a completed joint in the embodiment of FIG.

[0015]

As mentioned above, the advantage provided by the synchronous fixed joint of the configuration according to the invention is that the ring is connected to the joint outer part in a position aligned with the retainer by the fingers supporting the retainer. That is being done. Thus, it is guaranteed to eliminate all total errors adjusted in the joint. Also, sphere by Yu beauty exists when held without play to the outer running grooves and inner running groove, which is guaranteed to be capable of satisfactory regulation of predetermined axial play. Also, with the synchronous fixed joint of the configuration according to the invention, a clear relationship is obtained due to the play present in the joint. Thus, the first play series between the outer joint part, the ball and the inner joint part is zeroed, and the second play series between the outer joint part, the retainer and the inner joint part is adjustable. .

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a synchronous fixed joint having a ring for arranging a ball without play in an inner running groove and an outer running groove of the synchronous fixed joint of the present invention .

FIG. 2 is a partial longitudinal sectional view of a ring joined to a joint outer portion by welding.

FIG. 3 is a partial longitudinal sectional view showing a ring having a coaxial protrusion in a position welded to a joint outer portion.

FIG. 4 is a longitudinal cross-sectional view of a joint having a ring with an outer diameter larger than the outer portion of the joint to support the bellows.

FIG. 5 is a longitudinal sectional view of a joint using a coaxial projection as a seat for a fixed bellows.

FIG. 6 is a longitudinal sectional view of a joint having a concave portion for receiving a ring.

FIG. 7 is a longitudinal sectional view of a joint similar to FIG. 6, but having a ring welded to the joint outer part.

FIG. 8 is a plan view of the embodiment of FIG. 7;

FIG. 9a is a longitudinal section of an embodiment of the joint in which the fingers are arranged in radially extending grooves at the open end of the outer part of the joint. FIG. 9b is a plan view of an embodiment of the joint where the fingers are located in radially extending grooves at the open end of the outer portion of the joint.

FIG. 10a is a longitudinal section through an embodiment corresponding to FIG. 9, but having a coaxial projection on the ring for securing the ring to the outer part of the joint. FIG.
10b is a plan view of an embodiment corresponding to FIG. 9, but having a coaxial projection on the ring to secure the ring to the outer joint part.

FIG. 11a is a longitudinal sectional view showing an embodiment of a finger having a bent web. FIG.
FIG. 3 is a plan view showing an example of a finger having a bent web.

FIG. 12 is a longitudinal sectional view and a plan view showing an embodiment of a finger configured as a box-shaped hollow molded member.

FIG. 13a is a longitudinal sectional view showing an embodiment of a finger configured as a solid molded member. FIG. 13b is a plan view showing an embodiment of the finger configured as a solid molded member.

14 is a longitudinal sectional view showing a completed joint according to the embodiment shown in FIG. 13;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Joint outer part 2 Joint inner part 3 Cage 4 Outer surface 5 Groove 6 Ring 7 Finger 8 Ball 9 Web 10 Hollow molded member 11 Contact surface 12 Projection 13 Solid molded member 14 Pin 15 Outer running groove 16 Multi-wedge-shaped tooth 17 steps Part 18 Free chamber 19 Threaded hole 20 Inner running groove 21, 21a Reference plane 22 Support insert 23 Bellows 24 Depression 25 Joint inner chamber

Claims (14)

(57) [Claims] 1. A bell-shaped outer part of a joint having a joint inner chamber and having an outer running groove that is not undercut and evenly distributed on a peripheral surface, and an inner running groove that matches the outer running groove. A joint inner portion having a ball which is retained in a window of a retainer disposed between the joint outer portion and the joint inner portion, and is received in the inner running groove and the outer running groove to transmit torque; The joint outer portion has an inner surface that is not undercut and is disposed between outer running grooves, and the retainer further includes a ring.
In a synchronous fixed joint of the type fixed to the outside in the axial direction of the joint inside the joint between the outer running grooves by the outer running groove (15) and the inner running groove (2).
0) in the joint inner chamber (25) of the joint outer part (1) in the axially and radially inward direction and in the two outer running grooves (15).
A ring (6) with at least two fingers (7), respectively held between the spherical outer surface (4) of the retainer (3), on the open side of the joint outer part (1) An axial spacing (s) from an arranged reference surface (21, 21a), wherein the ring (6) maintains a predetermined axial play with respect to the retainer (3) and the joint outer part The inner surface, which is connected to the outer running groove (15) of the joint outer portion (1), is connected to the spherical outer surface (4) of the retainer (3). A synchronous fixed joint characterized by being held at an interval. 2. When the ring (6) is fixed to the joint outer part (1), the fingers (7) are bent towards the joint inner chamber (25). The synchronous fixed joint according to claim 1. 3. The wedge-shaped support insert (2) wherein said finger (7) is substantially axially spaced from said ring (6).
2. Synchronous fixed joint according to claim 1, characterized in that it is configured as 2). 4. The joint outer part (1) is provided with a ring (6) on a radial end face located on its open side.
Radially inwardly located recesses (2
4. Synchronous fixed joint according to one of the claims 1 to 3, characterized in that it comprises (4) and the inner diameter of the recess (24) is larger than the outer diameter of the ring (6). Wherein said ring (6), that one of claims 1 to 3, characterized in that comprises protrusions grab the outer peripheral surface coaxially to (12) of the outer joint part (1) Synchronous fixed joint as described. 6. The coaxial projection (12) of the ring (6) is used as a seat for a bellows (23) fixed to the joint outer part (1). The synchronous fixed joint according to claim 5, wherein 7. The ring (6), wherein the ring (6) has a larger diameter than an outer peripheral surface of a joint outer portion.
A portion of the outer peripheral surface of the outer joint portion (1) beyond the outer peripheral surface is used as a stopper for the bellows (23) fixed to the outer peripheral surface of the outer joint portion (1). The synchronous fixed joint according to claim 1. Wherein said outer joint part (1) is provided with at least two grooves extending radially open release side of its (5), said finger (7) is earlier Symbol ring (6), synchronization fixed joint according <br/> to one of claims 1 to 7, characterized in that through engagement with these the grooves (5) have met in the groove (5). 9. The joint outer part (1) is provided with an annular step (17) on the axially open side, formed by the step (17) for receiving the ring (6). synchronization fixed joint to one of claims 1 to 3 serial <br/> mounting free chamber located radially outwardly (18) and being provided to be. 10. The ring (6) is made of a radially extending flat material and is welded to the outer surface of the joint outer part (1) by means of a V-joint. The synchronous fixed joint according to any one of 1 to 3 . Wherein said ring (6) is, according to claim 1 乃 that the fillet seam and have grabbing an outer peripheral surface of the front Symbol outer joint part (1), characterized in Tei Rukoto is welded to the outer peripheral surface
Synchronous fixed joint according to one of -3 . 12. The fingers (7) are additionally bent approximately axially to the center of the joint starting from an inward radial direction, the bent web (9) being connected to the retainer (9). 2. A synchronous joint according to claim 1, wherein the joint is adapted to the spherical outer surface of (3). Wherein said finger (7), are as it were configured in a box shape as a hollow profile member, said finger
2. The device according to claim 1, wherein the abutment surface of the first member is adapted to the spherical outer surface of the retainer.
Synchronous fixed joint as described. 14. The finger (7) has a rectangular cross section as a solid molded member (13), and a surface located radially inward of the finger (7) is provided on the retainer (3). Synchronous fixed joint according to claim 1, characterized in that it is adapted to the spherical outer surface (4).