CN204784172U

CN204784172U - Rotatory reciprocal bearing

Info

Publication number: CN204784172U
Application number: CN201520485012.8U
Authority: CN
Inventors: 刘丰埠
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-07-07
Filing date: 2015-07-07
Publication date: 2015-11-18
Anticipated expiration: 2025-07-07

Abstract

The utility model relates to a rotatory reciprocal bearing, including outer lane, inner circle, ball with have the holder of through -hole, the holder lies in between outer lane and the inner circle, and its characterized in that, ball have threely and the equal through -hole that lies in of ball at least symmetrically, and the inner wall of outer lane is equipped with and supplies the rolling first ball track of ball, and the outer wall of inner circle is equipped with the orbital second ball track of the first ball of cooperation, and first ball track, second ball track are sinusoidal waveform track or cosine wave form track. Because the ball is spacing at the first ball track that is sinusoidal waveform or cosine wave form structure, in the second ball track, it is empty smooth to have prevented that the ball from taking place, make mode on two ball track the reciprocating motion of ball according to sinusoidal waveform or cosine wave form, the direct output of acting has been realized to operating condition's bearing, sinusoidal waveform or cosine wave form orbit that the ball was done have then reduced the rigid pressure harm of outside pressure in the twinkling of an eye to the ball, mechanical level and smooth the start -up has been guaranteed, bearing performance has been improved.

Description

Rotate reciprocal bearing

Technical field

The utility model relates to field of bearings, particularly relates to a kind of rotation reciprocal bearing.

Background technique

Bearing, be the important foundation component in all kinds of mechanized equipment, its precision, performance, reliability and life-span play conclusive key effect for the performance of machinery.

Bearing in the market mainly comprises outer ring, inner ring, ball and retainer, and retainer is provided with through hole, and ball is then positioned at through hole, and retainer is between outer ring and inner ring.When bearing working in machinery, ball carries out the rolling motion of single direction between outer ring inwall and interior ring outer wall, thus the direct friction lowered between stationary mechanism part and moving mechanical part, sliding friction is converted to rolling friction through ball, effectively reduce movement conduction resistance and wearing and tearing, extend the working life of machinery.

But current various bearing but still only serves the effect of support and antifriction in machinery, cannot use as Direct Power output block.Above-mentioned defect cause current various bearing cannot further for machinery streamlining organizations, improve in dynamic balance performance, reduced volume, raising complete machine functional reliability and sport life span etc. strong technical support be provided.

Model utility content

Technical problem to be solved in the utility model is the defect existed for above-mentioned existing bearing, provides a kind of and can play support and antifriction function in machinery, again can as the rotation reciprocal bearing of Direct Power output block.

The utility model solves the problems of the technologies described above adopted technological scheme: rotate reciprocal bearing, comprise outer ring, inner ring, ball and there is the retainer of through hole, retainer is between outer ring and inner ring, it is characterized in that, described ball at least has three and ball is all symmetrically located in through hole, the inwall of described outer ring is provided with the first ball orbit rolled for ball, the outer wall of described inner ring is provided with the second ball orbit of cooperation first ball orbit, and described first ball orbit, the second ball orbit are sinusoidal waveform track or cosine waveform track.

Further, the sinusoidal wave figurate number that presents of described first ball orbit and the second ball orbit or cosine wave figurate number are the integral multiple of described ball quantity.

Preferably, the quantity of described ball is three, and the through hole be positioned on retainer in equilateral triangle between described three balls.

Further, described first ball orbit, the second ball orbit are all at least in a sinusoidal waveform.

Further, described first ball orbit, the second ball orbit are all at least in a cosine waveform.

Further, described outer ring is connected and composed by the first outer ring portion be positioned on the upside of the first ball orbit and the second outer ring portion be positioned on the downside of the first ball orbit, and the junction in described first outer ring portion and the second outer ring portion is positioned at described first ball orbit place.

Further, described second outer ring portion is greater than the axial length of described first outer ring portion along center, outer ring along the axial length at center, outer ring, and described inner ring is greater than the axial length of retainer along the axial length at inner ring center.

Compared with prior art, the utility model has the advantage of: when this rotation reciprocal bearing working in reciprocating mode, be positioned at first ball orbit of the ball on retainer at outer ring inwall, second ball orbit of interior ring outer wall rolls, due to the first ball orbit, second ball orbit is all in sinusoidal waveform or cosine waveform structure, and ball is spacing at the first ball orbit symmetrically, in second ball orbit, prevent the generation of the sliding phenomenon of ball sky, thus ball is moved reciprocatingly on two ball orbits according to the mode of sinusoidal waveform or cosine waveform, the bearing of working state achieves the direct output of acting, the sinusoidal waveform movement locus that ball does or cosine waveform track then decrease the rigid pressure harm of outside instantaneous pressure to ball, and make and then ensure that the usability of bearing, extend the working life of bearing.

Accompanying drawing explanation

Fig. 1 is the structural representation rotating reciprocal bearing in the utility model embodiment one;

Fig. 2 is the plan view rotating reciprocal bearing shown in Fig. 1;

Fig. 3 is the decomposition texture schematic diagram rotating reciprocal bearing shown in Fig. 1;

Fig. 4 is the decomposing schematic representation of retainer, ball in Fig. 3;

Fig. 5 is the structural representation of outer ring in Fig. 1;

Fig. 6 is the structural representation of retainer in Fig. 1;

Fig. 7 is the structural representation of inner ring in Fig. 1;

Fig. 8 is the setting position schematic diagram of outer ring, retainer, inner ring in Fig. 1;

Fig. 9 is the structural representation rotating reciprocal bearing in the utility model embodiment two;

Figure 10 is the front view rotating reciprocal bearing in Fig. 9;

Figure 11 is the decomposition texture schematic diagram rotating reciprocal bearing in Fig. 9.

Embodiment

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

Embodiment one

As shown in Figures 1 to 8, rotation reciprocal bearing in the present embodiment one, comprise outer ring 1, inner ring 2, ball 4 and there is the retainer 3 of through hole 31, retainer 3 is between outer ring 1 and inner ring 2, ball 4 has three and ball 4 is all symmetrically located in through hole 31, wherein, the through hole 31 be positioned on retainer 3 in equilateral triangle between three balls 4; The inwall of outer ring 1 is provided with the first ball orbit 11 in sine wave shape, this first ball orbit 11 is used for rolling thereon for ball 4, accordingly, at the outer wall of inner ring 2, the second ball orbit 21 is set, this second ball orbit 21 is consistent with the shape of the first ball orbit 11, namely the second ball orbit 21 is also in sine wave shape, and the second ball orbit 21 is equally for rolling thereon for ball 4.Wherein, because sinusoidal wave, cosine wave shape are substantially identical, after namely sine wave does translation in the horizontal direction, cosine wave can be obtained.Therefore, this first ball orbit 11, second ball orbit 21 also can all in cosine wave shape.

Do in the first ball orbit 11, second ball orbit 21 to make ball 4 to roll stably, and reduce external mechanical stress to the impact of bearing, as improvement, the sinusoidal wave figurate number that the first ball orbit 11 and the second ball orbit 21 present or cosine wave figurate number are the integral multiple of ball 4 quantity.Such as, when the quantity of ball 4 is three, then the sinusoidal wave figurate number that the first ball orbit 11 presents is three or six, and accordingly, the sinusoidal wave figurate number presented corresponding to the second ball orbit 21 is also three or six.

According to the actual demand of bearing application, the quantity of ball 4 also can be set to multiple.Namely ball 4 at least has three, with meet uniform decomposition bearing bear the effect of external pressure.

In order to make this reciprocal bearing in rotary movement, can effectively avoid external mechanical stress on the impact of bearing, the first ball orbit 11, second ball orbit 21 is all at least in three sinusoidal waveforms or cosine waveform.Like this, when ball 4 rolls on the first ball orbit 11, second ball orbit 21, within the cycle of a waveform, the movement locus of ball 4 has upper and lower two amplitudes, thus can alleviate the impact of external mechanical stress on ball 4.

When this rotation reciprocal bearing working in reciprocating mode, be positioned at first ball orbit 11 of the ball 4 on retainer 3 at outer ring 1 inwall, second ball orbit 21 of inner ring 2 outer wall rolls, due to the first ball orbit 11, second ball orbit 21 is all in sinusoidal wave structure, and ball 4 is by spacing at the first ball orbit 11 symmetrically, in second ball orbit 21, prevent the generation of the sliding phenomenon of ball 4 sky, thus ball 4 is moved reciprocatingly on two ball orbits according to sine-shaped mode, the bearing of working state achieves the direct output of acting, the sinusoidal waveform movement locus that ball 4 does then decreases the rigid pressure harm of outside instantaneous pressure to ball 4, and then ensure that the usability of bearing, extend the working life of bearing.

Embodiment two

As shown in Figures 9 to 11, identical with the most of structure rotating reciprocal bearing in embodiment one, difference in the present embodiment two is, outer ring 1 is connected and composed by the first outer ring portion 13 be positioned on the upside of the first ball orbit 11 and the second outer ring portion 14 be positioned on the downside of the first ball orbit 11, and the junction in the first outer ring portion 13 and the second outer ring portion 14 is positioned at the first ball orbit 11 place.Wherein, in use, exterior mechanical structure is utilized to be pinned in the first outer ring portion 14 of outer ring portion 13, second, to realize being fixedly connected with between the two.In the present embodiment two, split-type structural is arranged in outer ring 1, can adjusts the play of ball 4 on the first ball orbit 11.

In order to expand the purposes of this rotation reciprocal bearing, as further corrective measure, second outer ring portion 14 is greater than the axial length of the first outer ring portion 13 along center, outer ring 1 along the axial length at center, outer ring 1, and inner ring 2 is greater than the axial length of retainer 3 along the axial length at inner ring 2 center.Vibrational power flow so, can make the rotation reciprocal bearing in the present embodiment two use as compression piston.Such as, the second outer ring portion 14 can as the cylinder body of compression piston group, and inner ring 2 becomes the piston of compression piston group.

Claims

1. rotate reciprocal bearing, comprise outer ring, inner ring, ball and there is the retainer of through hole, retainer is between outer ring and inner ring, it is characterized in that, described ball at least has three and ball is all symmetrically located in through hole, the inwall of described outer ring is provided with the first ball orbit rolled for ball, and the outer wall of described inner ring is provided with the second ball orbit of cooperation first ball orbit, and described first ball orbit, the second ball orbit are sinusoidal waveform track or cosine waveform track.

2. rotation reciprocal bearing according to claim 1, is characterized in that, the sinusoidal wave figurate number that described first ball orbit and the second ball orbit present or cosine wave figurate number are the integral multiple of described ball quantity.

3. rotation reciprocal bearing according to claim 1, is characterized in that, the quantity of described ball is three, and the through hole be positioned on retainer in equilateral triangle between described three balls.

4. rotation reciprocal bearing according to any one of claim 1 to 3, is characterized in that, described first ball orbit, the second ball orbit are all at least in three sinusoidal waveforms.

5. rotation reciprocal bearing according to any one of claim 1 to 3, is characterized in that, described first ball orbit, the second ball orbit are all at least in three cosine waveform.

6. rotation reciprocal bearing according to claim 1, it is characterized in that, described outer ring is connected and composed by the first outer ring portion be positioned on the upside of the first ball orbit and the second outer ring portion be positioned on the downside of the first ball orbit, and the junction in described first outer ring portion and the second outer ring portion is positioned at described first ball orbit place.

7. rotation reciprocal bearing according to claim 6, it is characterized in that, described second outer ring portion is greater than the axial length of described first outer ring portion along center, outer ring along the axial length at center, outer ring, and described inner ring is greater than the axial length of retainer along the axial length at inner ring center.