CN204647058U

CN204647058U - Unilateral bearing

Info

Publication number: CN204647058U
Application number: CN201520230456.7U
Authority: CN
Inventors: 徐伟俊; 傅军; 李晓道; 李静芬; 夏晓君
Original assignee: Ningbo Beilun Haibo Precision Machinery Manufacture Co Ltd
Current assignee: Ningbo Beilun Haibo Precision Machinery Manufacture Co Ltd
Priority date: 2015-04-16
Filing date: 2015-04-16
Publication date: 2015-09-16
Anticipated expiration: 2025-04-16

Abstract

The utility model relates to a kind of unilateral bearing, comprise overcoat, be placed on the inner sleeve in overcoat and be positioned at, retainer between overcoat, the sidewall of wherein retainer circumferentially has multiple axial long hole, roller is placed with in each axial long hole, and retainer is provided with multiple spring sheet offseted with corresponding roller respectively, outer casing inner wall circumferentially has successively and contacts and the reentrant part circumferentially deepened gradually with each roller, it is characterized in that spring sheet is two ends to the O shape structure forming a breach after bending, and the two ends of this spring sheet are positioned at the medium position of this O shape structure to form elastic arm and to contact with corresponding roller.Because spring sheet of the present utility model adopts tool O shape jaggy structure, therefore elasticity is better, when especially adopting metal material to make, even if Long-Time Service like this, also it can be made to keep good elastic state, thus functional reliability of the present utility model can be improved, and have structure simple, be easy to the feature that makes, cost is low.

Description

Unilateral bearing

Technical field

The utility model relates to a kind of bearing, specifically refers to a kind of unilateral bearing.

Background technique

Unilateral bearing can freely rotate in one direction, and a kind of bearing locked in the other directions.At present, the structure of unilateral bearing presents various ways, but principle is roughly the same, if Chinese patent Authorization Notice No. is the unilateral bearing disclosed in CN2462137N, it comprises outer ring body, inner ring body and roller, outer ring body central authorities are the endoporus for accommodating inner ring body and roller, inner ring body provides containing groove along ring body periphery inside, containing groove one side is set as smooth-going inclined-plane, projection sheet support plate bottom smooth-going inclined-plane, containing groove opposite side central authorities are oblique outside both sides establishes one to have flexible clip pin, clip foot portion is toward the spacing salient point of interior projection one, inner ring body is planted and is positioned endoporus, roller receives into containing groove, clip pin is pressed against on roller, this unilateral bearing component is few, be easy to assembling, cost is low.But this K shape clip pin is not easy to make, and comparatively large by the impact of temperature, deformation extent is inconsistent, causes pretightening force and restoring force not good, therefore needs to be further improved.

Model utility content

Technical problem to be solved in the utility model is the present situation for prior art, provides the unilateral bearing that a kind of functional reliability is good.

The utility model solves the problems of the technologies described above adopted technological scheme: a kind of unilateral bearing, comprise overcoat, be placed on the inner sleeve in overcoat and be positioned at, retainer between overcoat, the sidewall of wherein retainer circumferentially has multiple axial long hole, roller is placed with in each axial long hole, and retainer is provided with multiple spring sheet offseted with corresponding roller respectively, described outer casing inner wall circumferentially has successively and contacts and the reentrant part circumferentially deepened gradually with each roller, it is characterized in that: described spring sheet is two ends to the O shape structure forming a breach after bending, and the two ends of this spring sheet are positioned at the medium position of this O shape structure to form elastic arm and to contact with corresponding roller.

In such scheme, in order to spacing spring sheet, preferably, the outer side wall of described retainer is provided with positioning block group, this positioning block group by upper positioning block, lower positioning block and between upper and lower positioning block in positioning block form, upper and lower positioning block respectively with the supporting walls of spring sheet outside upper and lower end lean, interfix block is positioned at corresponding spring sheet, and with the supporting walls of spring sheet inside lean.

The further improvement of above-mentioned each scheme, one end outer side wall of described retainer is circumferentially provided with multiple projection that can be contained in the female portion, by protruding coordinating, to prevent retainer inordinate rotation with reentrant part.

Compared with prior art, because spring sheet of the present utility model adopts tool O shape jaggy structure, therefore such spring sheet elasticity is better, when especially adopting metal material to make, even if Long-Time Service like this, also it can be made to keep good elastic state, thus functional reliability of the present utility model can be improved, and have structure simple, be easy to the feature that makes, cost is low.

Accompanying drawing explanation

Fig. 1 is the plan view of the utility model embodiment;

Fig. 2 is that A-A in Fig. 1 is to sectional view;

Fig. 3 is that B-B in Fig. 1 is to sectional view;

Fig. 4 is that C-C in Fig. 3 is to sectional view;

Fig. 5 is the three-dimensional exploded view of Fig. 1;

Fig. 6 is the further exploded view of retainer group in Fig. 5.

Embodiment

Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.

As shown in Figures 1 to 6, this unilateral bearing comprises overcoat 1, inner sleeve 2, retainer 3 and roller 4, wherein, overcoat 1 inwall circumferentially has successively the reentrant part 11 deepened gradually, is used for contacting with each roller 4.Inner sleeve 2 is placed in overcoat 1, retainer 3 is positioned at, between overcoat, the sidewall of retainer 3 circumferentially has multiple axial long hole 31, roller 4 is placed with in each axial long hole 31, retainer 3 is also provided with multiple spring sheet 5 offseted with corresponding roller respectively, in the present embodiment, spring sheet 5 is two ends to the O shape structure forming a breach after bending, and the two ends of this spring sheet 5 are positioned at the medium position of this O shape structure to form elastic arm 51, sidewall corresponding with this elastic arm in O shape structure is supporting walls 52, this supporting walls 52 is limited in the positioning block group on the outer side wall of retainer, here, this positioning block group is by upper positioning block 32, lower positioning block 33 and being positioned at, middle positioning block 34 between lower positioning block forms, on, lower positioning block respectively with the supporting walls 52 of spring sheet outside upper, lower end leans, interfix block 34 is positioned at corresponding spring sheet, and with the supporting walls 52 of spring sheet inside lean, spacing spring sheet on retainer, its elastic arm 51 contacts with corresponding roller 4.

In order to prevent retainer 3 relative to overcoat 1 inordinate rotation, one end outer side wall of retainer 3 being circumferentially provided with and multiplely can being contained in the projection 35 stated in reentrant part.

During use, when inner sleeve is rotated by clockwise direction as shown in Figure 4, ball is driven also to rotate clockwise, roller is made to drop into the bosom of the reentrant part of overcoat, now, roller compressing spring sheet on retainer, have gap between inner sleeve and roller, between roller and overcoat, the rotation of inner sleeve can not drive overcoat to rotate together.And when inner sleeve rotates counterclockwise, under the effect of spring sheet, promotion roller moves to the shallow place of reentrant part, now, the rotation of inner sleeve, is clamped in roller between inside and outside cover, and at this moment, the rotation of inner sleeve can drive overcoat to rotate together.

Claims

1. a unilateral bearing, comprise overcoat, be placed on the inner sleeve in overcoat and be positioned at, retainer between overcoat, the sidewall of wherein retainer circumferentially has multiple axial long hole, roller is placed with in each axial long hole, and retainer is provided with multiple spring sheet offseted with corresponding roller respectively, described outer casing inner wall circumferentially has successively and contacts and the reentrant part circumferentially deepened gradually with each roller, it is characterized in that: described spring sheet is two ends to the O shape structure forming a breach after bending, and the two ends of this spring sheet are positioned at the medium position of this O shape structure to form elastic arm and to contact with corresponding roller.

2. unilateral bearing according to claim 1, it is characterized in that: the outer side wall of described retainer is provided with the positioning block group for locating each spring sheet, this positioning block group by upper positioning block, lower positioning block and between upper and lower positioning block in positioning block form, upper and lower positioning block respectively with the supporting walls of spring sheet outside upper and lower end lean, interfix block is positioned at corresponding spring sheet, and with the supporting walls of spring sheet inside lean.

3. unilateral bearing according to claim 1 and 2, is characterized in that: one end outer side wall of described retainer is circumferentially provided with multiple projection that can be contained in the female portion.