Rolling bearings and gearboxes

Abstract

To provide a rotary bearing and a gear box in which a rolling element does not fall off from an intermediate space when a driven part rotates, and the rotary bearing does not become stuck due to loss of function of the rotary bearing. The rotary bearing (50), particularly for a strain wave gear device, comprises an outer rotary bearing ring (1b) and an inner rotary bearing ring (1a) disposed within the outer rotary bearing ring (1b), the inner rotary bearing ring (1a) and the outer rotary bearing ring (1b) each having at least one receiving portion (10, 11), and the receiving portions (10, 11) are passed through the receiving portions (10, 11) and positioned so that both receiving portions (10, 11) fit together. In the present invention, a rolling element (8) can be introduced into a rolling bearing between a rolling bearing surface (9) of the inner rolling bearing ring (1a) and a rolling bearing surface (7) of the outer rolling bearing ring (1b) through a receiving opening (22) formed by both receiving portions (10, 11), and a guide ring (20) for the rolling element (8) is arranged in at least one of both receiving portions (10, 11) between the receiving opening (22) and the rolling element (8).

Description

[Technical field]

[0001] The present invention relates to a rolling bearing according to the preamble of claim 1. The invention further relates to a rolling bearing according to claim 1. 7 This relates to a gearbox (gear device box) based on the above concept. [Background technology]

[0002] Such rolling bearings are particularly suitable for supporting strain wave gearings, where the rolling bearing and the strain wave gearing form a gear box. Gear boxes of this type are used in many different technical fields. In particular, they are increasingly used in robotics technology and also in prosthetics technology. By way of example, reference is made here to the HarmonicDrive® gear, which belongs to the group of strain wave gearings.

[0003] The drive part, which is configured as an elliptical wave generator, deforms via ball bearings a transmission part, which is configured as a flexspline with external teeth, which is in engagement with an internally toothed wheel, which is configured as a circular spline, in the opposing region of the major axis of the ellipse. With the rotation of the wave generator, the major axis of the ellipse moves, and thus the tooth engagement region. The flexspline of the Harmonic Drive® gear usually has two fewer teeth than the circular spline, so that during half a rotation of the wave generator, a relative movement between the flexspline and the circular spline occurs by one tooth, and during a full rotation, by two teeth. If the circular spline is fixed in position, it rotates as a driven element in the opposite direction to the drive. In this case, the circular spline can be arranged in a fixable manner in a rotary bearing ring.

[0004] A wave gear of this kind is mounted on a rotary bearing ring in order to realize a rotational movement between two parts, which are supported rotatably on the rotary bearing ring. In this case, it is possible, on the one hand, for the wheel of the wave gear to be arranged non-rotatable relative to the rotary bearing ring, with rolling elements being arranged between the rotary bearing surface of the rotary bearing ring and the (rotary bearing surface of) the transmission part, so that the rotatability of the wave gear relative to the rotary bearing ring is ensured. However, on the other hand, it is also possible for the transmission part of the wave gear to be arranged non-rotatable relative to the rotary bearing ring, with rolling elements being arranged between the rotary bearing surface of the rotary bearing ring and the (rotary bearing surface of) the wheel, so that the rotatability of the wave gear relative to the rotary bearing ring is likewise ensured.

[0005] The following patent document 1 (AT 129151 B) discloses a single-row or multiple-row full complement radial ball bearing, in which a guide ring of angular cross section is fitted or fitted onto the inner or outer race.

[0006] From US Pat. No. 1,212,253 A a rolling bearing is known which has two bearing rings for the rolling elements and a guide ring.

[0007] The patent document 3 (CH 38509 A) below describes a ball bearing with two mutually concentric rings for the rolling elements and one guide ring.

[0008] From DE 10 2015 104 308 A1 it is known to configure the rolling bearing of the above-mentioned mounting set in such a way that the wheel or transmission part and the rolling bearing ring are each provided with at least one receiving portion through which rolling bodies can be introduced into the rolling bearing between the rolling bearing surface of the wheel or transmission part and the rolling bearing surface of the rolling bearing ring in the position where the two receiving portions coincide with one another. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Austrian Patent No. 129151 [Patent Document 2] U.S. Patent No. 1,212,253 [Patent Document 3] Swiss Patent No. 38509 [Patent Document 4] German Patent Application Publication No. 102015104308 Summary of the Invention [Problem to be solved by the invention]

[0010] A disadvantage of this type of arrangement is that the rolling elements can fall out of the intermediate spaces when the driven part rotates, which can impair the function of the rolling bearing and cause it to jam.

[0011] It is therefore an object of the present invention to improve the above-mentioned rolling bearing in this respect. Also, an improved gear box should be provided. [Means for solving the problem]

[0012] Regarding the rolling bearing, the problem is solved by the method according to claim 1. ~4、6The problem is solved by a rolling bearing having the following features. Advantageous configurations of the invention can be seen from the subclaims as well as the following description and drawings. That is, according to the first aspect of the present invention, A rotating bearing, a rolling bearing ring comprising an outer rolling bearing ring and an inner rolling bearing ring disposed within said outer rolling bearing ring, said inner rolling bearing ring and said outer rolling bearing ring each being provided with at least one receiving portion through which rolling elements can be received in a rolling bearing between a rolling bearing surface of said inner rolling bearing ring and a rolling bearing surface of said outer rolling bearing ring through a receiving opening defined by said receiving portions at a position where both receiving portions fit together, a guide ring for the rolling elements is arranged in at least one of the receiving parts between the receiving opening and the rolling elements; A rolling bearing is provided, characterized in that More specifically, in the first aspect, A rotating bearing, a rolling bearing ring comprising an outer rolling bearing ring and an inner rolling bearing ring disposed within said outer rolling bearing ring, said inner rolling bearing ring and said outer rolling bearing ring each being provided with at least one receiving portion through which rolling elements can be received in a rolling bearing between a rolling bearing surface of said inner rolling bearing ring and a rolling bearing surface of said outer rolling bearing ring through a receiving opening defined by said receiving portions at a position where both receiving portions fit together, at least one of the two receiving parts is provided with a guide ring for the rolling body between the receiving opening and the rolling body; and a sealing ring is disposed in at least one of the receiving portions, the sealing ring preventing axial movement of the guide ring in the direction of the receiving opening; or A rotating bearing, a rolling bearing ring comprising an outer rolling bearing ring and an inner rolling bearing ring disposed within said outer rolling bearing ring, said inner rolling bearing ring and said outer rolling bearing ring each being provided with at least one receiving portion through which rolling elements can be received in a rolling bearing between a rolling bearing surface of said inner rolling bearing ring and a rolling bearing surface of said outer rolling bearing ring through a receiving opening defined by said receiving portions at a position where both receiving portions fit together, at least one of the two receiving parts is provided with a guide ring for the rolling body between the receiving opening and the rolling body; and a snap ring is disposed in at least one of the receiving portions, the snap ring preventing axial movement of the guide ring in the direction of the receiving opening; or A rotating bearing, a rolling bearing ring comprising an outer rolling bearing ring and an inner rolling bearing ring disposed within said outer rolling bearing ring, said inner rolling bearing ring and said outer rolling bearing ring each being provided with at least one receiving portion through which rolling elements can be received in a rolling bearing between a rolling bearing surface of said inner rolling bearing ring and a rolling bearing surface of said outer rolling bearing ring through a receiving opening defined by said receiving portions at a position where both receiving portions fit together, at least one of the two receiving parts is provided with a guide ring for the rolling body between the receiving opening and the rolling body; and the guide ring is configured in the form of a screw having an external thread that is in engagement with an internal thread formed in the outer rolling bearing ring; or A rotating bearing, a rolling bearing ring comprising an outer rolling bearing ring and an inner rolling bearing ring disposed within said outer rolling bearing ring, said inner rolling bearing ring and said outer rolling bearing ring each being provided with at least one receiving portion through which rolling elements can be received in a rolling bearing between a rolling bearing surface of said inner rolling bearing ring and a rolling bearing surface of said outer rolling bearing ring through a receiving opening defined by said receiving portions at a position where both receiving portions fit together, at least one of the two receiving parts is provided with a guide ring for the rolling body between the receiving opening and the rolling body; and the guide ring is axially fixed in position within the outer rolling bearing ring by a press fit (oversizing) along its outer diameter; or A rotating bearing, a rolling bearing ring comprising an outer rolling bearing ring and an inner rolling bearing ring disposed within said outer rolling bearing ring, said inner rolling bearing ring and said outer rolling bearing ring each being provided with at least one receiving portion through which rolling elements can be received in a rolling bearing between a rolling bearing surface of said inner rolling bearing ring and a rolling bearing surface of said outer rolling bearing ring through a receiving opening defined by said receiving portions at a position where both receiving portions fit together, at least one of the two receiving parts is provided with a guide ring for the rolling body between the receiving opening and the rolling body; and The guide ring is integral with the flat seal; It is characterized by: According to a second aspect of the present invention, A gearbox including a rolling bearing according to the first aspect and a strain wave gear device supported within the rolling bearing, the strain wave gearing comprises a drive part, a resilient transmission part with external toothing, and a wheel with internal toothing, the transmission part being capable of being fitted onto the drive part and being deformed by the drive part into an elliptical shape such that the external toothing of the transmission part can engage with the internal toothing of the wheel in an opposing region of the major axis of the ellipse; A gearbox is provided, characterized in that It should be noted that the reference numerals in the claims of the present application are intended solely to facilitate understanding of the present invention and are not intended to limit the present invention to the illustrated forms. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] In the present invention, the following configurations are possible. (Form 1) A rolling bearing, in particular for a strain wave gear device, a rolling bearing ring comprising an outer rolling bearing ring and an inner rolling bearing ring disposed within said outer rolling bearing ring, said inner rolling bearing ring and said outer rolling bearing ring each being provided with at least one receiving portion through which rolling elements can be received in a rolling bearing between a rolling bearing surface of said inner rolling bearing ring and a rolling bearing surface of said outer rolling bearing ring through a receiving opening defined by said receiving portions at a position where both receiving portions fit together, At least one of the two receiving parts has a guide ring for the rolling body arranged between the receiving opening and the rolling body. (Form 2) It is preferred that a sealing ring, in particular a radial shaft sealing ring, is arranged in at least one of the two receiving portions, which prevents axial movement of the guide ring in the direction of the receiving opening. (Form 3) Preferably, at least one of the two receiving portions is provided with a snap ring, which prevents axial movement of the guide ring in the direction of the receiving opening. (Form 4) The guide ring is preferably configured in the form of a screw having an external thread which is in engagement with an internal thread formed on the outer rolling bearing ring. (Form 5) The guide ring is preferably axially fixed in position within the outer rolling bearing ring by a press fit (oversizing) along its outer diameter. (Form 6) The guide ring is preferably made of plastic or steel. (Form 7) The guide ring is preferably constructed integrally with the flat seal. (Form 8) Preferably, at least one of the receiving portions is provided with only the guide ring and no separate seal. (Form 9) A gearbox including the rotary bearing according to any one of aspects 1 to 8 and a strain wave gear device supported in the rotary bearing, The strain wave gear device has a drive part, an elastic transmission part with external toothing, and a wheel with internal toothing, and the transmission part can be fitted onto the drive part and can be deformed into an elliptical shape by the drive part so that the external toothing of the transmission part can engage with the internal toothing of the wheel in the opposing region of the major axis of the ellipse. (Form 10) Preferably, said wheel constitutes said outer rolling bearing ring. (Form 11) Preferably, the inner rolling bearing ring is configured as a connecting wheel with an internal toothing having the same number of teeth as the external toothing of the transmission part, the internal toothing of the connecting wheel being in engagement with the external toothing of the transmission part.

[0014] According to the invention, in at least one of the two receiving parts, a guide ring for the rolling elements is arranged between the receiving opening and the rolling elements.

[0015] The invention proceeds from the idea that the falling off of rolling elements from a bearing must be avoided at all costs. The replacement of rolling bearings is very complicated, especially in installation situations with difficult access. In addition, a malfunction of the bearing or a stuck bearing can lead to dangerous situations.

[0016] As has now been recognized, a guide ring can be used to restrict the rolling elements from moving axially toward the receiving opening to prevent the rolling elements from falling out.

[0017] The rolling bearings can preferably be configured as four-point bearings (four-point contact bearings), which can be configured very compactly and can absorb high tilting moments in addition to pure axial and radial forces, which is an advantage in particular in the bearing arrangement of the strain wave gear described here.

[0018] Advantageously, at least one of the two receiving parts is provided with a sealing ring, in particular a radial shaft sealing ring, which prevents the axial movement of the guide ring in the direction of the receiving opening. In certain applications, it may happen that the used lubricant moves through the gear, for example until it reaches the rolling bearing of the gear and passes through the bearing intermediate space present there. If necessary, the bearing intermediate space can be sealed against the ingress of unwanted material or the escape of rolling bearing grease by means of an outer radial shaft sealing ring. At the same time, the radial shaft sealing ring can support the guide ring in the axial direction.

[0019] Preferably, at least one of the two receiving parts is provided with a snap ring (locking ring) which prevents axial movement of the guide ring in the direction of the receiving opening, thereby allowing a simple and cost-effective axial fixing of the guide ring using standard machine components.

[0020] The guide ring is constructed in accordance with the invention in the form of a screw having an external thread which is in engagement with an internal thread formed on the outer rolling bearing ring.

[0021] The guide ring, in one embodiment according to the invention, is axially fixed in the outer rolling bearing ring by a press fit (oversized) along its outer diameter, this low-cost fixing method does not require the manufacture of threads, grooves, etc.

[0022] The guide ring is preferably manufactured from plastic or steel, the latter being particularly cost-effective.

[0023] In one embodiment of the invention, the guide ring is constructed integrally with the flat seal. This type of construction makes it possible to dispense with a separate part for the seal and simplifies the manufacturing process of the rolling bearing. For example, a metal ring that serves as the guide ring can be integrated into the flat seal, which is constructed as an elastomer.

[0024] Regarding the gearbox, the above problem is solved by the following claim: 7 The problem is solved by a gearbox having the following features:

[0025] In this case, the gear box is preferably an open or closed housing in which gear parts (gears) are supported on a shaft using a bearing mechanism or seals.

[0026] Advantageously, the wheel or the circular spline constitutes the outer rolling bearing ring, which allows a versatile and compact gearbox to be realized.

[0027] In a preferred embodiment, the inner rolling bearing ring is configured as a coupling wheel with an internal toothing having the same number of teeth as the external toothing of the transmission part, the internal toothing of the coupling wheel being in engagement with the external toothing of the transmission part. This gear configuration allows for a very compact configuration in the axial direction.

[0028] Further objects, advantages, features and applicability of the invention can be seen from the following description of an embodiment based on the drawings, in which all features described in this specification and / or illustrated in the drawings, by themselves or in any meaningful combination thereof, constitute the subject of the invention, regardless of their association in the claims or claim dependencies. [Brief description of the drawings]

[0029] [Figure 1]FIG. 1 shows a cross-sectional view of a first preferred embodiment of a rolling bearing according to the invention, which constitutes a gearbox together with a strain wave gear supported in the rolling bearing. [Diagram 2] FIG. 2 shows a second preferred embodiment of a gearbox according to the present invention in cross-sectional view. [Diagram 3] FIG. 13 shows a third preferred embodiment of a gearbox according to the present invention in cross-sectional view. [Figure 4] FIG. 13 shows a fourth preferred embodiment of a gearbox according to the present invention in cross-sectional view. [Diagram 5] FIG. 13 shows a fifth preferred embodiment of a gearbox according to the present invention in a cross-sectional view. [Figure 6] FIG. 13 shows a cross-sectional view of a sixth preferred embodiment of a gearbox according to the present invention. EXAMPLES

[0030] In all figures, the same parts or portions are provided with the same reference numbers.

[0031] 1 shows an assembled cross-sectional view of an embodiment of a strain wave gear 40 supported in a rolling bearing 50 according to the invention, the rolling bearing 50 and the strain wave gear 40 together forming a gearbox 70. A transmission part 4 configured as a flexspline is fitted onto a drive part 2 configured as an elliptical wave generator, which is preferably supported on a hollow shaft, and the transmission part 4 is likewise (elastically) deformed into an elliptical shape by the elliptical drive part 2. The external toothing 3 of the deformed transmission part 4 engages with the internal toothing 5 of a wheel 6 configured as a circular spline in the opposing region of the major axis of the ellipse.

[0032] The wheel 6 has the largest axial extent of all the components of the gearbox 70. In the example embodiment described here, the drive part 2 is configured as an elliptical wave generator. An elastic transmission part 4 configured as a flexspline is mounted on this drive part 2 via a ball bearing 16 with a number of spheres 17. Due to the elasticity in the region of the external toothing 3 of the transmission part 4, this transmission part 4 is likewise deformed into an elliptical shape due to the elliptical shape of the drive part 2.

[0033] The elastic transmission part 4 has an external toothing 3 which is deformed into an ellipse so that in the region of the major axis of the ellipse it is in engagement with an internal toothing 5 of a wheel 6 which is configured as a circular spline. The wheel 6 has an inner surface which is configured as a rolling bearing surface 7 and which corresponds to the outer surface of an inner rolling bearing ring 1a which is configured as a rolling bearing surface 9, the inner rolling bearing ring 1a being provided with an internal toothing which has the same number of teeth as the transmission part 4 and which thus has the function of a coupler (without reduction).

[0034] In this case, a rolling bearing having a plurality of rolling elements 8 is arranged between the rolling bearing surfaces 7, 9 of the wheel 6 and the inner rolling bearing ring 1a, and the rolling bearing surfaces 7, 9 of the wheel 6 and the inner rolling bearing ring 1a are configured as races (raceway parts) for the rolling elements 8 of the rolling bearing. The wheel 6 is the outer rolling bearing ring 1b of the rolling bearing 50.

[0035] In order to achieve an extremely narrow and compact construction of the gearbox 70, a receiving part 10 is provided for the rolling bearing surface 7 of the wheel 6 or the outer rolling bearing ring 1b, and a receiving part 11 is provided for the rolling bearing surface 9 of the inner rolling bearing ring 1a. In this case, the two receiving parts 10, 11 are arranged and adapted to one another in such a way that, facing one another, they form a feed channel 24 with a receiving opening 22 and allow a conformal reception of the rolling elements 8. By conformal reception of the rolling elements 8, the rolling bearing between the wheel 6 and the rolling bearing ring 1a can be filled with the rolling elements 8 via the feed channel 24, so that the wheel 6 can be supported without play on the rolling bearing ring 1a and the rolling bearing ring 1a and the wheel 6 can rotate relative to one another. Now in this position, the transmission part 4 configured as a flexspline can be driven by means of the drive part 2 configured as a wave generator, so that a relative movement is effected between the wheel 6 and the transmission part 4. The rolling elements 8 are configured as spheres (balls) in this embodiment.

[0036] The flexspline or transmission part 4 engages with the wheel 6 or circular spline and additionally with a connecting wheel 13 or dynamic spline, the connecting wheel 13 being identical to the internally toothed rolling bearing ring 1a. The connecting wheel 13 has an internal toothing with the same number of teeth as the external toothing 3 of the transmission part 4. The connecting wheel 13 thus functions as a coupling without reduction gears.

[0037] The components of the gearbox 70, i.e. the inner rolling bearing ring 1a, the driving part 2, the transmission part 4 and the wheel 6, are arranged coaxially around a central longitudinal axis 15 of the gearbox 70. Due to the geometrical arrangement of the rolling elements 8 and the receiving parts 10, 11 of the wheel 6 and the inner rolling bearing ring 1a, it is possible to provide an axially very compact and narrow gearbox 70, which can be used in particular when only a very small construction space can be provided to realize the rotary movement, as is the case in many applications, in particular in robotic systems and prosthetics, and which provides a simple assembly of the gearbox 70.

[0038] The rolling bearing 50 is optimized for high reliability and a long service life. In order to prevent the rolling elements 8 from falling out of the feed channel 24 and out of the receiving parts 10, 11, a guide ring 20 is arranged in the receiving part 10 of the rolling bearing ring 1b. The embodiments of the rolling bearing according to figures 5 and 6 also have receiving parts 10, 11, respectively.

[0039] The guide ring 20, the receiving parts 10, 11 and the supply channel 24 are shown in Fig. 1 as a partially enlarged view 80. Axialwise between the guide ring 20 and the receiving opening 22, a radial shaft seal 21 is arranged in the supply channel 24, which radial shaft seal 21 prevents axial movement of the guide ring 20 in the direction of the receiving opening 22. The guide ring 20 has an axially extending ring-shaped projection 41 which comes into contact with the rolling elements 8. The projection 41 has a contact surface which comes into contact with the rolling elements 8 during operation, which contact surface is preferably small in order to minimize friction between the guide ring 20 and the rolling elements 8.

[0040] The radial shaft seal 21, which is configured as a radial shaft seal ring, is supported radially outwardly in a step 43 in the outer rotary bearing ring 1b and, on the opposite side, rests sealingly by means of a sealing edge 45 on the outer surface configured as a sealing surface 44 of the inner rotary bearing ring 1a.

[0041] The guide ring 20 thus holds the rolling elements 8 in the ring-shaped ring gap 23 and prevents them from falling out of the supply channel 24 when the rolling bearing 50 is moved or rotated, so that the rolling elements 8 do not fall out of the ring-shaped cavity 23 even if the supply channel 24 is oriented vertically downwards. The guide ring 20 is preferably manufactured from plastic (low cost) or also from steel.

[0042] The gearboxes 70 shown in FIGS. 2 to 4 differ from one another only with respect to the type of construction of the guide ring 20 or the receiving parts 10, 11, respectively, as well as the type of construction of the components arranged in the receiving parts 10, 11.

[0043] 2 shows another preferred embodiment of a gearbox 70 with a rolling bearing 50 and a strain wave gear 40. In this embodiment, a snap ring (locking ring) 25 is arranged in the receiving part 10. The snap ring 25 is arranged in a radial groove 26 of the wheel 6 in the radial outer area and is thereby fixed radially and axially. The snap ring 25 prevents an axial movement of the guide ring 20 in the direction of the receiving opening 22. The guide ring 20 is preferably made of plastic or also of steel. A radial shaft seal 21 is also provided in this embodiment.

[0044] Another preferred embodiment of a gearbox 70 with rolling bearing 50 and strain wave gearing 40 is shown in figure 3. In this embodiment, a guide ring 20, preferably made from steel, is configured with a threaded form having an external thread 27 which engages with a corresponding internal thread 28 in the wheel 6.

[0045] 4 shows another preferred embodiment of a gearbox 70 with a rolling bearing 50 and a strain wave gear 40. In this case, the guide ring 20, which is preferably made of plastic but can also be made of steel, is axially fixed in position by a press fit or oversize fit in the wheel 6 along the outer diameter of the guide ring 20. Gluing of the guide ring 20 is also possible.

[0046] FIG. 5 shows a further preferred embodiment of a gearbox 70 with a rolling bearing 50 and a strain wave gearing 40, which has a wheel 6 or circular spline configured as an internal gear, which is in engagement in a defined area with the external toothing 3 of the transmission part 4 or flexspline in the area of ​​the internal toothing 5 of the wheel 6.

[0047] The transmission part 4 is connected to an outer rotary bearing ring 1b of the rotary bearing 50 so as to be non-rotatable relative to the wheel 6, and the outer rotary bearing ring 1b supports the transmission part 4 and the wheel 6 so as to be rotatable relative to each other. The inner rotary bearing ring 1a of the rotary bearing 50 is connected to the circular spline or the wheel 6 so as to be non-rotatable relative to the wheel 6.

[0048] The transmission part 4 is deformed into an elliptical shape by the elliptical drive part 2. The external toothing 3 of the elliptical deformed transmission part 4 engages in the opposing region of the major axis of the ellipse with the internal toothing 5 of the wheel 6 configured as a circular spline. In the exemplary embodiment described here, the drive part 2 is configured as an elliptical wave generator. The elastic transmission part 4 configured as a flexspline is mounted on this drive part 2 via a ball bearing 16 with a number of spheres 17. Due to the elasticity in the region of the external toothing 3 of the transmission part 4, this transmission part 4 is likewise deformed into an elliptical shape by the elliptical shape of the drive part 2.

[0049] In this embodiment, the guide ring 20 is configured as an inner seal or flat seal or is integrated into the inner seal or flat seal. The flat seal and the guide ring 20 are configured as one piece or integrally. In this embodiment, the guide ring 20 is preferably made of an elastomer and plastic / steel composite material.

[0050] Another preferred embodiment of a gearbox 70 with a rolling bearing 50 and a strain wave gear 40 is shown in Fig. 6, which differs from the embodiment shown in Fig. 5 only by the configuration of the guide ring. In the embodiment of Fig. 6, only one guide ring 20 without a dynamic seal is provided. The guide ring 20 can be configured as a pure plastic ring or can be configured from an elastomer and plastic / steel composite material and can therefore also assume the function of a static O-ring seal between the rolling bearing ring 1b and the transmission part 4. [Explanation of symbols]

[0051] 1a Inner rotating bearing ring 1b Outer swivel bearing ring 2 Driving parts 3 External teeth 4 Transmission parts 5 Internal teeth 6 Wheels 7 Rotating bearing surface 8 Rolling elements 9 Rotating Bearing Surface 10 Reception Department (Aufnahme) 11 Reception Department (Aufnahme) 13 Connected wheels 15 Central longitudinal axis 16 Ball bearings 17 Sphere 20 Guide Ring 21 Radial shaft seal 22 Receiving opening 23 Ring gap (hollow part) 24 Supply Channels 25 Snap ring 26 Groove 27 Male thread 28 Female thread 40 Strain Wave Gear 41 Protrusion 43 Absatz 44 Sealing surface 45 Seal Edge 50 swivel bearing 70 Gearbox 80 Partial Enlarged View

Claims

1. A rotating bearing, said bearing ring (1b) and an inner bearing ring (1a) arranged in said outer bearing ring (1b), said inner bearing ring (1a) and said outer bearing ring (1b) each being provided with at least one receiving portion (10, 11) through which rolling elements (8) can be introduced into a rolling bearing between a rolling bearing surface (9) of said inner bearing ring (1a) and a rolling bearing surface (7) of said outer bearing ring (1b) via a receiving opening (22) formed by both receiving portions (10, 11) at a position where both receiving portions (10, 11) fit together, at least one of the two receiving parts (10, 11) is provided with a guide ring (20) for the rolling element (8) between the receiving opening (22) and the rolling element (8); and a sealing ring (21) is arranged in at least one of the two receiving parts (10, 11), said sealing ring preventing axial movement of the guide ring (20) in the direction of the receiving opening (22); A rotating bearing characterized by:

2. A rotating bearing, said bearing ring (1b) and an inner bearing ring (1a) arranged in said outer bearing ring (1b), said inner bearing ring (1a) and said outer bearing ring (1b) each being provided with at least one receiving portion (10, 11) through which rolling elements (8) can be introduced into a rolling bearing between a rolling bearing surface (9) of said inner bearing ring (1a) and a rolling bearing surface (7) of said outer bearing ring (1b) via a receiving opening (22) formed by both receiving portions (10, 11) at a position where both receiving portions (10, 11) fit together, at least one of the two receiving parts (10, 11) is provided with a guide ring (20) for the rolling element (8) between the receiving opening (22) and the rolling element (8); and a snap ring (25) is arranged in at least one of the receiving parts (10, 11), said snap ring (25) preventing axial movement of the guide ring (20) in the direction of the receiving opening (22); A rotating bearing characterized by:

3. A rotating bearing, said bearing ring (1b) and an inner bearing ring (1a) arranged in said outer bearing ring (1b), said inner bearing ring (1a) and said outer bearing ring (1b) each being provided with at least one receiving portion (10, 11) through which rolling elements (8) can be introduced into a rolling bearing between a rolling bearing surface (9) of said inner bearing ring (1a) and a rolling bearing surface (7) of said outer bearing ring (1b) via a receiving opening (22) formed by both receiving portions (10, 11) at a position where both receiving portions (10, 11) fit together, at least one of the two receiving parts (10, 11) is provided with a guide ring (20) for the rolling element (8) between the receiving opening (22) and the rolling element (8); and the guide ring (20) is configured in the form of a screw having an external thread (27) which is in engagement with an internal thread (28) formed on the outer rolling bearing ring (1b); A rotating bearing characterized by:

4. A rolling bearing, said bearing ring (1b) and an inner bearing ring (1a) arranged in said outer bearing ring (1b), said inner bearing ring (1a) and said outer bearing ring (1b) each being provided with at least one receiving portion (10, 11) through which rolling elements (8) can be introduced into a rolling bearing between a rolling bearing surface (9) of said inner bearing ring (1a) and a rolling bearing surface (7) of said outer bearing ring (1b) via a receiving opening (22) formed by both receiving portions (10, 11) at a position where both receiving portions (10, 11) fit together, at least one of the two receiving parts (10, 11) is provided with a guide ring (20) for the rolling element (8) between the receiving opening (22) and the rolling element (8); and said guide ring (20) being axially fixed in said outer rolling bearing ring (1b) by a press fit (oversizing) along its outer diameter; A rotating bearing characterized by:

5. said guide ring (20) being made of plastic or steel; A rolling bearing according to any one of claims 1 to 4, characterized in that

6. A rotating bearing, said bearing ring (1b) and an inner bearing ring (1a) arranged in said outer bearing ring (1b), said inner bearing ring (1a) and said outer bearing ring (1b) each being provided with at least one receiving portion (10, 11) through which rolling elements (8) can be introduced into a rolling bearing between a rolling bearing surface (9) of said inner bearing ring (1a) and a rolling bearing surface (7) of said outer bearing ring (1b) via a receiving opening (22) formed by both receiving portions (10, 11) at a position where both receiving portions (10, 11) fit together, at least one of the two receiving parts (10, 11) is provided with a guide ring (20) for the rolling element (8) between the receiving opening (22) and the rolling element (8); and The guide ring (20) is integrally formed with a flat seal; A rotating bearing characterized by:

7. A gearbox including a rolling bearing (50) according to any one of claims 1 to 6 and a strain wave gear device (40) supported in the rolling bearing (50), the strain wave gearing (40) comprises a drive part (2), an elastic transmission part (4) with an external toothing (3) and a wheel (6) with an internal toothing (5), the transmission part (4) being capable of being fitted onto the drive part (2) and being deformed by the drive part (2) into an elliptical shape such that the external toothing (3) of the transmission part (4) can be engaged with the internal toothing (5) of the wheel (6) in the opposing region of the major axis of the ellipse; A gearbox characterized by

8. said wheel (6) constituting said outer rolling bearing ring (1b); 8. Gearbox according to claim 7, characterized in that

9. the inner rolling bearing ring (1a) is configured as a connecting wheel (13) with an internal toothing having the same number of teeth as the external toothing (3) of the transmission part (4), the internal toothing of the connecting wheel (13) being in engagement with the external toothing (3) of the transmission part (4); A gearbox according to claim 7 or 8, characterized in that

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