CN2531164Y

CN2531164Y - Non-return rolling bearing

Info

Publication number: CN2531164Y
Application number: CN 02223523
Authority: CN
Inventors: 陆大雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-02-28
Filing date: 2002-02-28
Publication date: 2003-01-15
Anticipated expiration: 2012-02-28

Abstract

The utility model introduces a non-return rolling bearing, which belongs to the technical field of rolling contact bearing, comprising an outer ring, an inner ring, a ring shape retainer clamped between the outer ring and the inner ring, and a rolling ball positioned and retained by the retainer. The retainer in the side near the outer ring or near the inner ring or in the both sides is provided with a shim block which is matched with the spherical radian of the rolling ball retained in the cup groove, furthermore, the cup groove cavity surface on one side of the shim block and the rolling ball in the groove have a large gap therebetween, so when the rotary direction of the bearing is changed, the retainer is not driven, that is to say, the rolling ball is blocked by the shim block in advance to realize reversal automatic braking. The bearing has the advantages of simple structure, high efficiency of preventing reversion.

Description

Backstop rolling bearing

Technical field

The utility model belongs to the bearings with rolling contact technical field.

Background technique

Up to the present, commercially available rolling bearing does not still have the non-return device that promptly prevents reverse rotation.And the known backstop that is widely used in engineering goods its structure more complicated of ratchet mechanism for example, it is higher to be used for the engineering goods cost, and it is bigger to take up room for engineering goods itself, can strengthen the fuselage deadweight again.

The model utility content

The technical problems to be solved in the utility model is to provide a kind of comparatively simple non-return mechanism to realize the backward motion braking of wheel or wheel shaft one class engineering goods.

The scheme that the utility model solves the problems of the technologies described above is, a kind of improved rolling bearing is provided, and uses this bearing, and the function that can make the wheel that rotates with bearing or wheel shaft have the reverse rotation of preventing because of bearing realizes the reverse rotation braking of self.The backstop rolling bearing of this conceptual design is referring to accompanying drawing, this backstop rolling bearing, it includes outer ring (1), inner ring (2), the annular retainer (5) that is in series by some bowls of grooves (51) that is clamped between above-mentioned outer ring (1) and the inner ring (2) reaches the rolling ball (4) that is kept by its bowl groove (51) location by retainer (5), improvements are, described retainer (5) near above-mentioned outer ring (1) or inner ring (2) wherein a side have with above-mentioned bowl groove in the voussoir (3) that is complementary of rolling ball (4) the sphere radian that keeps, near having the gap (6) of spacing greatly between the rolling ball (4) in side bowl groove (a 51) vallecular cavity chamber face of above-mentioned voussoir (3) and this groove groove.As above-mentioned because its retainer (5) one sides of this improved backstop rolling bearing of the present utility model near above-mentioned outer ring (1) or inner ring (2) wherein a side have with the bowl groove in the voussoir (3) that is complementary of rolling ball (4) the sphere radian of maintenance, side bowl groove (a 51) vallecular cavity chamber face with above-mentioned voussoir (3) again and the gap (6) that has big spacing in this groove groove between the rolling ball (4), thereby changed the partial shape of retainer in the rolling bearing, promptly on the retainer of general rolling bearing, set up the voussoir (3) of the sphere radian coupling of a tip of the tongue shape or its inner ball surface radian of watt shape and rolling ball.When within the bearing, the outer ring is during wherein near the circle body opposite spin of voussoir, voussoir (3) will be stuck in circle body and rolling ball (4) thus between make it to rotate to reach and prevent the reverse rotating effect of circle body.And when above-mentioned inside and outside circle wherein rotated near the circle body postive direction of voussoir, inner ring or outer ring circle body drove rolling ball (4) and roll, and rolling ball (4) drives retainer (5) again and rotates.Voussoir (3) is then followed at rolling ball (4) afterwards all the time, can not cause between bowl groove and the rolling ball stuck phenomenon to occur.And counter-rotating the time also can drive voussoir (3) and rotate together, but during backward rotation because a side of rolling ball (4) and the close voussoir (3) of bowl groove vallecular cavity chamber face of retainer (5) such as above-mentioned being provided with than crack (6) and when not driving retainer, pushed up to voussoir (3) and reached non-return purpose between the spacing greatly.

Description of drawings

Fig. 1 is the structural representation of a specific embodiment of the utility model backstop rolling bearing;

Fig. 2 is the sectional view of backstop rolling bearing shown in Figure 1 (voussoir is near inner ring);

The backstop rolling bearing structural representation of Fig. 3 when to be voussoir near the outer ring be provided with;

Fig. 4 is the structural representation that voussoir is arranged at the backstop rolling bearing of retainer when the inside and outside circle both sides simultaneously;

Fig. 5 is watt shape structural representation that is of voussoir;

Fig. 6 is the tongue structure schematic representation for voussoir;

In above Fig. 1～6, wherein 1-outer ring, 2-inner ring, 3-voussoir, 3 '-voussoir, 4-rolling ball, 5-retainer, 51-bowl groove, 6-gap.

Embodiment

Embodiment 1, with reference to Fig. 1～2, this embodiment's backstop rolling bearing of the present utility model has a steel outer ring (1) and a steel inner ring (2), and this steel inner ring (2) circle footpath size is inserted in the outer ring (1) with above-mentioned outer ring (1) circle inner chamber circle footpath size coupling and coaxial line.The ring-type retainer (5) that clamping one usefulness engineering plastics integraly formed forms between outer ring (1) and the inner ring (2) is in series by some bowls of grooves (51) chain of rings is provided with the steel ball rolling ball (4) of size and bowl groove (51) inner chamber size coupling in each bowl groove (51) of retainer (5).Make rolling ball (4) in bowl groove (51), can make free rolling motion.And rolling ball (4) the sphere radian that a side of this retainer (5) is kept in integraly formed one and the bowl groove (51) too is complementary as scheming watt shape voussoir (3) shown in (5), simultaneously, make the gap that has 2 millimeters spacings near between the rolling ball (4) in side bowl groove (a 51) vallecular cavity chamber face of above-mentioned voussoir (3) and this groove groove, thus when not driven retainer when the bearing sense of rotation is changed rolling ball (4) be hampered by voussoir (3) in advance thus realize the reverse Braking mode.That therefore this backstop rolling bearing of the utility model design has is simple in structure, efficiently prevent the advantage that reverses.

Embodiment 2: with reference to Fig. 3, the voussoir of this embodiment's backstop rolling bearing (3) is arranged at the side of retainer (5) near outer ring (1), and other structures are with embodiment 1.

Embodiment 3: with reference to Fig. 4 and Fig. 6, the voussoir of this embodiment's backstop rolling bearing (3) is two, one of them voussoir (3) relies on above-mentioned inner ring (2), another voussoir (3 ') relies on the corresponding above-mentioned voussoir in above-mentioned outer ring (1) (3) and is located on the retainer (5), in addition, the voussoir of this example backstop rolling bearing (3) is ligule as shown in Figure 6, and other structures are also with embodiment 1.

Claims

1, a kind of backstop rolling bearing, it includes outer ring (1), inner ring (2), be clamped in the annular retainer of going up between outer ring (1) and the inner ring (2) (5) that is in series by some bowls of grooves (51) and reach the rolling ball (4) that keeps by its bowl groove (51) location by retainer (5), it is characterized in that, described retainer (5) near above-mentioned outer ring (1) or inner ring (2) wherein a side have with above-mentioned bowl groove in the voussoir (3) that is complementary of rolling ball (4) the sphere radian that keeps, near having the gap (6) of spacing greatly between the rolling ball (4) in side bowl groove (a 51) vallecular cavity chamber face of above-mentioned voussoir (3) and this groove groove.

2, backstop rolling bearing according to claim 1 is characterized in that it is two that described retainer (5) is gone up set voussoir (3), and one of them voussoir (3 ') relies on above-mentioned outer ring (1), and another voussoir (3) relies on above-mentioned inner ring (2).