CN102374237A

CN102374237A - Retainer for roller and oscillating internally meshing gear device

Info

Publication number: CN102374237A
Application number: CN2011101962077A
Authority: CN
Inventors: 芳贺卓; 石川哲三; 志津庆刚
Original assignee: Sumitomo Heavy Industries Ltd
Current assignee: Sumitomo Heavy Industries Ltd
Priority date: 2010-08-05
Filing date: 2011-07-11
Publication date: 2012-03-14
Anticipated expiration: 2031-07-11
Also published as: JP5492700B2; CN102374237B; DE102011109191A1; JP2012036947A; DE102011109191B4

Abstract

The present invention provides a retainer for maintaining high strength and further enhancing lubricating property of a roller, and an oscillating internally meshing gear device which is provided with the retainer and has high lubricating property. A plurality of rollers (60, 62) is maintained by the retainer (34, 35). The retainer comprises a pair of first and second ring bodies (34A, 34B), two end positions for positioning the rollers (60, 62), and a connector (34C) for connecting the first and second ring bodies (34A, 34B) and positioning circumferential positions of the rollers (60, 62). Recesses (34E, 34F) acting as channel of lubricant are formed on the axial middle part of the connector (34C), the radial size L6 of a base end part (34C1) of the connector (34C), which is adjacent with the first and second ring bodies (34A, 34B) is larger than the radial size L7 of the part of forming the recesses (34E, 34F).

Description

The retainer of roller and swing internally meshed type gearing

Technical field

The application advocates the preference based on the Japanese patent application of on August 5th, 2010 application 2010-176571 number.The full content of its application is applied in this specification through reference.

The present invention relates to a kind of retainer of roller and be assembled with the swing internally meshed type gearing of this retainer.

Background technique

Disclose swing internally meshed type gearing in the patent documentation 1.In this gearing, external gear is engaged in internal gear in swing time.At external gear and make between the eccentric body of this external gear swing and dispose a plurality of rollers.A plurality of rollers are kept by retainer.Retainer possesses to be had: a pair of ring body, stipulate these a plurality of rollers end positions separately; And union body, connect this a pair of ring body and stipulate the circumferential locations of said a plurality of rollers.

This swing internally meshed type gearing possesses a plurality of external gears, and is assembled with a plurality of rollers (and retainer) respectively corresponding to each external gear.The ring body of the adjacency of each retainer contacts each other.In this patent documentation 1; 2 retainers about this adjacency; The imaginary circle ring body that imagination is set through the union body regulation of the 1st retainer reaches the imaginary circle ring body through the union body regulation of the 2nd retainer; On this basis, these 2 imaginary circle ring bodies are set the size of the union body of 2 retainers in the overlapping mode that makes progress in whole week with from end on observation the time.

In patent documentation 1,,, also can bear and stop this torque to suppress the inclination of this roller through the union body of its adjacent retainer even if when gearing being applied torque and being about to by the roller that a side retainer keeps through this structure.

Patent documentation 1: Japan Patent discloses 2010-32000 communique (Fig. 3)

In possessing the swing internally meshed type gearing of a plurality of external gears,, be configured the axially locating of the roller between each eccentric body and external gear usually through the ring body contact each other of retainer like disclosed gearing in the patent documentation 1.

But each roller and retainer thereof the periphery of eccentric body (owing to be disposed at) when the every rotation of axle that is provided with this eccentric body one time, only are equivalent to offset apart from this degree of variable in distance in axle center.Therefore, for the ring body of the retainer that can make adjacency continues contact each other all the time, it is big that the size of the radial direction of ring body (width) has to correspondingly become.Its result exists oiling agent to be difficult to get into and be difficult to carry out swimmingly from ring body gap each other the problem of lubricating of roller and so on.

Especially, like disclosed gearing in the patent documentation 1, when when preventing retainer that mode that ring body tilts constitutes with the stiffening effect through union body, the ring body of adjacency surface of contact is each other kept the state of closely being pushed all the time.Therefore exist oiling agent to be difficult to further get into roller side and the further worry that reduces of lubricity.

Summary of the invention

The present invention accomplishes in order to solve this problem in the past, and its problem is to provide a kind of swing internally meshed type gearing of keeping the retainer of the lubricity that the stable retention performance of roller and high-intensity while can further improve roller and being assembled with the high lubricating property of this retainer.

The present invention solves above-mentioned problem through being made as following structure, a kind of retainer that keeps a plurality of rollers, and it possesses: a pair of ring body, locate said a plurality of roller end positions separately; And union body; Link this a pair of ring body and locate the circumferential locations of said a plurality of rollers; Wherein, Said union body is formed with the recess of the passage that becomes oiling agent at its axial intermediate portion, and the radial dimension of the base end part that is adjacent to said ring body of said union body is greater than the radial dimension of the part that is formed with said recess.

If dwindle the size (length) of radial direction of ring body or the union body of retainer, the tendency that the stability that then have the lubricity of roller further to uprise, roller keeps further descends.Retainer involved in the present invention is formed with the recess of the passage that becomes oiling agent at axial intermediate portion.Its result, (because the size of the radial direction of union body integral body can be kept suitable size) can keep roller with stable status, and because oiling agent can pass through recess, so can guarantee high-lubricity.

And among the present invention, the radial dimension of the base end part that is adjacent to ring body of union body must form the radial dimension greater than the part that is formed with this recess.In view of the above, can relax on the said base end part that stress concentrates on the union body of being strict with the intensity aspect, (although being formed with recess) can prevent that also the retainer integral intensity from descending.

In addition, may not necessarily mean axial middle position as said " the axially intermediate portion " of the formation position of this recess, also can be from central position deviation.And the formation number of recess is not limited to 1 yet.And then recess can be formed at the radial direction outer circumferential side of union body, and all sides in also can being formed at can also be formed at the radial direction both sides of union body.

When the present invention is applied to be configured in the maintenance of eccentric body and the roller between the external gear of swing internally meshed type gearing, especially can bring into play its original function.

The invention effect

According to the present invention, can obtain to keep stable retention performance of roller and high-intensity while can further improve the retainer of the lubricity of roller, and is assembled with the swing internally meshed type gearing of the high lubricating property of this retainer.

Description of drawings

Fig. 1 is the whole synoptic diagram of swing internally meshed type gearing that is assembled with the related retainer of an example of mode of execution of the present invention.

Fig. 2 is near the major component enlarged view of retainer of Fig. 1.

Fig. 3 is the stereogram that this retainer of expression keeps the state of roller.

Fig. 4 is near the sectional view that amplifies of union body of the state of this retainer maintenance roller of expression.

Fig. 5 is the part enlarged view that there is the square with the axis cross section of the part of claw in the union body of this retainer.

Fig. 6 is the stereogram of the external gear of this gearing.

Fig. 7 is the local disrumpent feelings plan view (A) and the side view (B) of the related retainer of an example of other mode of execution of the present invention.

Fig. 8 is the sectional view that the major component of Fig. 7 is amplified.

Fig. 9 is the part enlarged view from the retainer of the inboard Fig. 7 of observation of radial direction.

Figure 10 is the whole synoptic diagram of other gearing that is assembled with the retainer of Fig. 7.

Among the figure: 10-gearing, 12, the 14-eccentric body, 16, the 18-external gear, 20-internal gear; The 22-input shaft, 34, the 35-retainer, 34A, 34B, 35A, 35B-the 1st, the 2nd ring body, 34C-union body; The 34C1-base end part, 34E, 34F-recess, 34G, 34H-claw; The 36-shell, 42,44-the 1st, the 2nd flange, 60, the 62-roller.

Embodiment

Below, specify an example of mode of execution of the present invention according to accompanying drawing.

Fig. 1 is the whole synoptic diagram of swing internally meshed type gearing that is assembled with the related retainer of an example of mode of execution of the present invention.At first, the brief configuration of this gearing of simple declaration.

This gearing 10 is for being engaged in the gearing of swinging internally meshed type that is called as of internal gear 20 in the

external gear

16,18 through

eccentric body

12,14 swing rotations.

Be formed with small gear 24 on the input shaft 22 of gearing 10.3 distribution gear 28A～28C of small gear 24 and 3 eccentric axon 26A～26C (only illustrating eccentric axon 26A, distribution gear 28A among Fig. 1 respectively) mesh simultaneously.Each eccentric axon 26A～26C is last to be formed with said

eccentric body

12,14 respectively.The periphery of each

eccentric body

12,14 disposes a plurality of

rollers

60,62, with chimeric state group

external gear

16,18 is housed in the periphery of these a plurality of rollers 60,62.The

related retainer

34,35 of mode of execution of the present invention is applied to keep being disposed at this

eccentric body

12,14 and external gear 16, a plurality of rollers between 18 60,62 (afterwards stating).

Be engaged in internal gear 20 in the external gear 16,18.The number of teeth of

external gear

16,18 only is less than internal gear 20.Internal gear 20 and shell 36 becoming one.

Each eccentric axon 26A～26C is supported on the 1st, the

2nd flange

42,44 through roller bearing 38,40.The 1st flange 42 and the 2nd flange 44 are through linking or becoming one from the 2nd flange 44 one outstanding wheel support body 44A and bolt 46.Incorporate the 1st, the

2nd flange

42,44 is supported on said shell 36 through the 1st, the 2nd angular contact ball bearing 48,50 respectively.

In addition, dispose 2

external gears

16,18 in this example in the axial direction side by side, eccentric phase deviation 180 degree of each external gear 16,18.Like Fig. 1, Fig. 2 and shown in Figure 6; In 2

external gears

16,18; Space in order to ensure the axial dimension amount of the 1st ring body 35A of the 2nd ring body 34B of the retainer of stating after holding 34 and retainer 35 is formed with

teat

16B, 18B in the radial direction inboard of external tooth 16A, 18A.Thus; Guarantee the facewidth L1 of the external tooth of

external gear

16,18 more greatly, and in the external gear of being guaranteed because of the existence of this

teat

16B, 18B 16, space between 18, rationally hold the part of the 1st ring body 35A of the 2nd ring body 34B and the retainer 35 of holding part 34.

In addition, the inner space of gearing 10 is airtight by oil sealing 54 etc., and encloses lubricating grease (oiling agent) is arranged.

The effect of this gearing 10 of simple declaration.

If input shaft 22 rotations, then 3 eccentric axon 26A～26C rotate to equidirectional with identical speed through small gear 24 and 3 distribution gear 28A～28C.Thus, be embedded in the swing rotation limit,

external gear

16,18 limits of each eccentric body 26A～26C and be engaged in internal gear 20.Because

external gear

16,18 numbers of teeth only are less than internal gear 20, so if

external gear

16,18 is engaged in internal gear 20, the then slow stable relative rotation of generation between each

external gear

16,18 and internal gear 20 in while swing.

At this, if internal gear 20 (and shell 36) is fixed, at this moment, the rotation composition of eccentric axon 26A～26C and

external gear

16,18 revolves round the sun synchronously and around the axle center O1 of gearing 10.Thus, can take out the output of slowing down from the 1st, the

2nd flange

42,44 that rotates along with this revolution.On the contrary, if the rotation of external gear 16,18 (revolution of eccentric axon 26A～26C) is limited, at this moment, because therefore internal gear 20 sideway swivels can take out so-called frame rotation output from the shell 36 with these internal gear 20 becoming one.

Below near the structures the said

retainer

34,35 are elaborated.

Fig. 2 is near the major component enlarged view the

retainer

34,35 of Fig. 1.From describing obviously of Fig. 1, Fig. 2, in this mode of execution, 2

retainers

34,35 keep a plurality of

rollers

60,62 respectively and have identical shape.Therefore, in following explanation as not, limiting especially, then only is to be conceived to retainer 34 sides describe.

In addition, Fig. 3 is the stereogram that expression retainer 34 keeps the state of roller 60.Fig. 4 is near the sectional view that amplifies of union body of the state of expression retainer 34 maintenance rollers 60.

Retainer 34 is formed by the resin that comprises glass fibre, possesses a pair of the 1st, the 2nd ring body 34A, the 34B of the axial end positions that a plurality of rollers 60 of regulation are arranged and links the union body 34C of this a pair of the 1st, the 2nd ring body 34A, 34B.The content of glass fibre is 35% in this mode of execution.In addition, like this mode of execution, in the structure that retainer 34 (35) rubs each other, especially for the abrasion of the 2nd ring body 34B (35B) that prevents this retainer 34 (35), the content of glass fibre is preferably 10～40%, especially is preferably 25～40%.Union body 34C is through stipulating the circumferential locations of each roller 60 between the circumferencial direction that is positioned at (being kept by retainer 34) roller 60.

The size of the 1st, the 2nd ring body 34A of retainer 34, the radial direction of 34B is L2, and the size of the radial direction of union body 34C is L3.This size L2, L3 are can be with the size of abundant stable status location or maintenance roller 60.

Among the union body 34C, be formed with totally 2 and become recess 34E, the 34F of the passage of oiling agent at its axial intermediate portion.In this mode of execution, dispose recess 34E on the radial direction outer circumferential side of union body 34C, interior all sides dispose recess 34F.The position that 2 recess 34E, 34F depart from being formed at axially each other.In this mode of execution, as shown in Figure 3, further through alternately assembling union body 34C turningly, also can make

recess

34E and 34E, and the state that departs from becoming axially of

recess

34F and 34F of the union body 34C of adjacency.

Among recess 34E, the 34F, the shape that comprises the cross section of axle center O1 becomes truncated cone shape.It is in order to prevent that the stress that transition takes place in the bight on the base of

recess

34E, 34F from concentrating that the sectional shape of

recess

34E, 34F becomes truncated cone shape.For fear of the decline of intensity, the depth d 1 of

recess

34E, 34F all becomes the more shallow size of the pitch circle P1 that does not exceed roller 60.Replace, axial formation length L 4 is guaranteed for 2～3 times of depth d 1 and is designed to make oiling agent fully to pass through.

But the shape of recess may not be a truncated cone shape, for example can also can be semicircle for the U font.And, this

example center dant

34E, 34F respectively the outer circumferential side of union body 34C and in all sides only form 1, also can form more than 2.Form the position that the position also is not limited to this example.And then the degree of depth of

recess

34E and 34F can be different, and the degree of depth of recess 34E (or 34F) also can corresponding each union body 34C and have nothing in common with each other.

In this retainer 34, the radial dimension L6 of the base end part 34C1 that is adjacent to the 1st, the

2nd ring body

34A, 34B of union body 34C becomes the size greater than the radial dimension L7 of the part that is formed with recess 34E, 34F.This is near the intensity the base end part of fully guaranteeing easy concentrated stress.

And, be formed with claw 34G, the 34H that prevents that roller 60 from coming off respectively in the radial direction inboard of union body 34C and the end in the outside.This

claw

34G, 34H do not spread all over the entire axial length of union body 34C in this embodiment and form; And be formed in an axial part; Particularly be formed on from the base end part 34C1 that is adjacent to the 1st, the

2nd ring body

34A, 34B of union body 34C to axially a little away from the position, form a pair of

claw

34G and 34H respectively in inboard end of the radial direction of union body 34C and end outside the radial direction.That is, the base end part 34C1 of union body 34C and axial central part 34C6 are not formed with claw.

The size of the claw 34G of the end that radial direction is inboard (forming height) be H1, and the size of the claw 34H of the end in the radial direction outside (forming height) is the H2 that is a bit larger tham H1 (H2＞H1).According to the setting of this size, the radial direction inboard (making claw 34G resiliently deformable) through applying some power from retainer 34 is pressed into each roller 60, is assembled in retainer 34 thereby can cross this claw 34G.

Shown in dotted line among Fig. 5, roller 60 moves to radial direction between

claw

34G, 34H with the state that is bonded body 34C and keeps, and this moving range Lm is set at eccentric amount e (with reference to Fig. 2) greater than said eccentric body 12,14 (Lm＞e).

In addition, as shown in Figure 2,2

retainers

34,35 are in contact with one another, and are sandwiched in said the 1st, the

2nd flange

42,44 through

liner

64,66 and carry out axially locating.In addition,

retainer

34,35 does not directly nuzzle up each other, for example, can make each retainer 34 yet, clip plate between 35.

Secondly, the effect of the related retainer of this mode of execution 34 is described.

The swing internally meshed type gearing 10 related according to this mode of execution, a plurality of

rollers

60,62 are disposed at

eccentric body

12,14 and external gear 16, between 18, alleviate the slip resistance of

external gear

16,18 when the periphery swing of

eccentric body

12,14.

Be conceived to retainer 34 sides, a plurality of rollers 60 are stipulated its axial position through the 1st, the 2nd ring body 34A, the 34B of retainer 34, and stipulate the position of circumferencial direction through union body 34C.In this mode of execution, the size of the 1st, the 2nd ring body 34A of retainer 34, the radial direction of 34B is set at (bigger) L2, and the size of the radial direction of union body 34C also is set at (bigger) L3.Therefore, can or keep roller 60 with abundant stable status location.And; Even under the situation that reduction speed ratio is lower and eccentric amount e

eccentric body

12,14 is bigger of gearing 10; 1st, the big or small L2 of the radial direction of the

2nd ring body

34A, 34B also can guarantee to be corresponding size; So the 2nd ring body 34B of the retainer 34 of adjacency and the 1st ring body 35A of retainer 35 can continue contact with stable status all the time, and can suitably carry out the axially locating of

retainer

34,35.

At this, among the union body 34C, the outer circumferential side of its axial intermediate portion and interior all sides are formed with recess 34E and recess 34F respectively.Therefore (even big or small L2, the L3 of the radial direction of the 1st, the

2nd ring body

34A, 34B and the union body 34C of retainer 34 form significantly); Pass through at this

recess

34E, 34F through oiling agent; Combine with roller 60 rotations own, oiling agent can spread all over the complete cycle of roller 60 well.Especially in this embodiment; The position that these 2 recess 34E, 34F depart from being formed at axially each other; And, through alternately assembling each union body 34C turningly, the recess 34E of the union body 34C of adjacency and 34E, and the state that departs from also becoming axially of recess 34F and 34F.Thus, oiling agent also can be easily to circumferentially or move axially, and can further improve lubricity.

And in this mode of execution, the radial dimension L6 of the base end part 34C1 that is adjacent to the 1st, the

2nd ring body

34A, 34B of union body 34C becomes the size greater than the radial dimension L7 of the part that is formed with recess 34E, 34F.Therefore, can fully guarantee near the intensity of base end part 34C1 of easy concentrated stress.

And in this mode of execution, the claw 34G of

union body

34C, 34H do not spread all over the entire axial length of union body 34C and form, but only are formed at the axial part of union body 34C.Especially, be not formed with claw with the base end part 34C1 of the 1st, the

2nd ring body

34A, 34B adjacency and the axial central part 34C6 place of roller 60.Therefore, oiling agent can more freely move to the whole surface that axially reaches circumferencial direction of roller 60, and can further improve lubricity.But, for example, when more preferably considering intensity, can spread all over entire axial length and form claw.

In addition, the retainer in this mode of execution 34 and retainer 35 the 2nd ring body 34B, the 35B through adjacency contacts with each other and carries out mutual axially locating.The

2nd ring body

34B, 35B wearing and tearing each other take place easily, but in this mode of execution, because form retainer 34 (35) by the resin that comprises 35% glass fibre, so can guarantee durability well in this position structure.And; Especially; Because this mode of execution is the 2nd ring body 34B through adjacency, the structure that mutual axially locating is carried out in the contact between the 35B, and with narrated technological in the past identical, in fact be the imaginary circle ring body in the overlapping structure of complete cycle; And lubricating condition is not good, so it is better the well-formed ground through this mode of execution to lubricate the effect of roller 60 (62).

And; In this mode of execution;

Claw

34G, 34H be formed at from the base end part 34C1 of the union body 34C of the 1st, the

2nd ring body

34A, 34B adjacency to axially a little away from the position; Promptly between this base end part 34C1 and recess 34E, the 34F, so this

claw

34G, 34H play a role as reinforcement (enhancing body).That is, when this

claw

34G, 34H itself strengthen the base end part 34C1 of the strict union body 34C in durability aspect, can stop

recess

34E, 34F upper stress to concentrate the influence that brings directly to be passed to base end part 34C1 side.

In addition, because of the existence of

claw

34G, 34H, also can easily carry out the assembling of roller 60 to retainer 34.In this mode of execution, the size of the claw 34G that radial direction is inboard (forming height) be H1, and the size of the claw 34H in the radial direction outside (forming height) is the H2 that is a bit larger tham H1 (H2＞H1).According to the setting of this size, the radial direction inboard (making claw 34G resiliently deformable) through applying power from retainer 34 is pressed into each roller 60, is assembled in retainer 34 thereby can cross this claw 34G.Assembled roller 60 outside radial direction (because the claw 34H in the outside is bigger) can not fly away from yet.And, if cross inboard claw 34G with the roller 60 disposable retainers 34 that are assembled in, then this roller 60 (so long as not with strength and it is dropped to the radial direction inboard) can not come off from retainer 34.

And in this mode of execution, the range L m that roller 60 moves to radial direction with the state that remains in union body 34C is set at the eccentric amount e greater than eccentric body 12,14.Therefore, when the retainer 34 (35) that so will be assembled with roller 60 is assembled in the periphery of

eccentric body

12,14 of gearing 10,2 retainer 34 (35) both sides of assembling that can (make

roller

60 or 62 when radial direction moves) from axial phase the same side.Therefore, can be easily the retainer 34 (35) of the state that is assembled with roller 60 (62) be assembled in gearing 10.

In addition, in this mode of execution, in order to improve lubricity and all adjacent recess 34E (34F) to be staggered in the axial direction in maximum ground; But this structure not necessarily; For example, can on a plurality of adjacent union bodies, be formed with recess 34E (34F) in axial same position.And the axial position of recess 34E (34F) can upwards whenever change at a distance from 2 union bodies or 3 union bodies in week.Its result, as long as be formed on the position that the recess of the union body of adjacency arbitrarily departs from each other vertically, then (situation that is formed at axial same position with whole recess is compared) can further be improved lubricity.

The example of other mode of executions of the present invention shown in Fig. 7～Fig. 9.

Fig. 7 is local disrumpent feelings plan view and the side view that is assembled with the state of roller on other related retainers of this mode of execution of expression, and Fig. 8 is the sectional view that the major component of Fig. 7 is amplified, and Fig. 9 is the arrow IX line of direction view of Fig. 7 of this retainer.

The related retainer 70 of this mode of execution is also identical with before mode of execution, possesses the 1st, the

2nd ring body

70A, 70B and union body 70C.And the radial dimension L8 of the base end part 70C1 that is adjacent to the 1st, the

2nd ring body

70A, 70B of union body 70C is greater than the radial dimension L9 of the part that is formed with recess 70E.But, in this mode of execution, only be formed with the recess 70E of 1 wider width as recess at axial central part.In addition, as variation, also can form the recess of identical wide cut at outer circumferential side (or on the outer circumferential side also).

And as shown in Figure 9, the union body 70C of the retainer 70 in this mode of execution forms the circumferential thickness D2 in the zone that comprises recess 70E greater than the circumferential thickness D1 of the base end part 70C1 that is adjacent to the 1st, the

2nd ring body

70A, 70B of union body 70C (D1＜D2).That is, its circumferential thickness of union body 70C is not constant (circumferential thickness changes in the axial direction) in the axial direction.This means that union body 70C also anisotropically contacts axially whole with roller 76, but roller 76 only contacts in upwards thicker part of week (thickness beyond the base end part 70C1 is the D2 part) with union body 70C.In other words, between the base end part 70C1 of the union body 70C that upwards relatively forms in week and roller 76, there is a little gap than unfertile land.Can be acted on as follows according to this structure.

That is, when the union body 70C through retainer 70 kept roller 76, if because of some reason roller 76 is about to deflection (the spin axis desire of roller 76 tilts), then the end of roller 76 produced the excessive stresses that is called as what is called " edge load ".But; In this mode of execution; The circumferential thickness D1 of the base end part 70C1 of union body 70C is less than the circumferential thickness D2 in the zone that comprises recess 70E, and can near this base end part 70C1, (and the gap between the roller 76) keep oiling agent comfortably, so be difficult to take place this edge load.

And; Even its result's roller 76 is deflection a little; The slip resistance that does not also almost have roller 76 ends is followed this deflection and the phenomenon that increases, thus can not encourage deflection (because convergence deflection) fast because of the increase of this slip resistance, therefore can be extremely slick and sly and stably keep roller 76.

And then; In this mode of execution; Spread all over axial relative broad range and be formed with recess 70E; But be formed with the zone that comprises this recess 70E than heavy back (D1＜D2) is so even form the intensity that the recess 70E of wide cut also can guarantee to comprise the union body 70C of this recess 70E part fully because compare with base end part 70C1 relatively.In addition, in this mode of execution, comprise recess 70E and the wider scope of axial range that spreads all over than this recess 70E forms its circumferential thickness D2 so that its circumferential thickness D1 greater than base end part 70C1.But, when more preferably considering lubricity, for example, also can only the axial range identical with recess be formed the circumferential thickness greater than base end part.And, also can be only the scope of the axial range that the is narrower than recess part of the axial range of recess (only with) be formed the circumferential thickness greater than base end part.And then for example, during intensity in the base end part of misgivings relatively more and ring body adjacency, the circumferential thickness that also can make the zone that comprises recess is less than base end part.In a word; Union body axially on circumferencial direction thickness setting (changing method) may not with the position interlock of recess; Also can on the bases such as position, shape, axial extent or the radial direction degree of depth of the length of the radial direction of the base end part of considering union body, recess, suitably set according to the relation between intensity of wanting to guarantee or the edge load.

In addition, for other structures of the concrete structure that comprises the claw 70G that is used on radial

direction keeping roller

76,70H, since basic identical with mode of execution before, so omit repeat specification.

But, among the present invention, do not limit for the concrete structure of the device that is assembled with retainer is special.Shown in Figure 10 the retainer 70 of Fig. 7～Fig. 9 is assembled in the example of the related gearing of other structures 110.This gearing 110 also is swing internally meshed type gearing.But, will be equivalent to small gear 24 and the small gear 124 of 3 distribution gear 28A～28C and the axial central authorities (being not the axial sidepiece of gearing 110) that 3 distribution gear 128A～128C (only illustrating distribution gear 128A among Figure 10) are disposed at 2 external gears 116,118 in the mode of execution of Fig. 1.Therefore, 2

retainers

70,70 can directly not contact, but contact with the sidepiece of distribution gear 128A～128C respectively.

The related gearing of other structures and the mode of execution of Fig. 1～Fig. 6 before is identical.Therefore, at the identical or similar part additional back two digits symbol identical, and omit repeat specification with the mark of the mode of execution of Fig. 1.

In addition; Among the present invention; If when being assembled in this swing internally meshed type gearing, use retainer, then can obtain significant effect, be applied to swing the internally meshed type gearing but may not necessarily be defined in; So long as comprise axle and be embedded in the device of the gomphosis part on this periphery through a plurality of rollers that keep by retainer, just can be applied to various devices.For example, also can be applied to keep to be disposed on the retainer of planet pin and the roller between the planetary pinion of simple planetary gear device.

Claims

1. the retainer of a roller, it keeps a plurality of rollers, it is characterized in that, possesses:

A pair of ring body is located said a plurality of roller end positions separately; And

Union body links this a pair of ring body and locatees the circumferential locations of said a plurality of rollers,

Said union body is formed with the recess of the passage that becomes oiling agent at its axial intermediate portion, and,

The radial dimension of the base end part that is adjacent to said ring body of said union body is greater than the radial dimension of the part that is formed with said recess.

2. the retainer of roller as claimed in claim 1 is characterized in that,

The said recess of the said union body that adjoins each other is formed at the position of skew vertically each other.

3. according to claim 1 or claim 2 the retainer of roller is characterized in that,

Said recess is formed at all sides and outer circumferential side both sides in the radial direction of said union body.

4. like the retainer of each described roller in the claim 1 to 3, it is characterized in that,

Said recess forms the size of the pitch circle that does not exceed said roller.

5. like the retainer of each described roller in the claim 1 to 4, it is characterized in that,

End at the radial direction of said union body is formed with the claw that prevents that said roller from coming off.

6. the retainer of roller as claimed in claim 5 is characterized in that,

Said claw only is formed at the axial part of said union body.

7. the retainer of roller as claimed in claim 5 is characterized in that,

Said claw spreads all over the axial total length of said union body and forms.

8. like the retainer of each described roller in the claim 1 to 7, it is characterized in that,

The circumferential thickness of said union body changes in the axial direction.

9. the retainer of roller as claimed in claim 8 is characterized in that,

The circumferential thickness in zone that comprises said recess is greater than the circumferential thickness of the base end part that is adjacent to said ring body of said union body.

10. like the retainer of each described roller in the claim 1 to 9, it is characterized in that,

Said retainer is formed by the resin that comprises glass fibre.

11. a swing internally meshed type gearing is engaged in internal gear in the external gear through eccentric body swing rotation, it is characterized in that,

Each described retainer in the claim 1 to 10 is possessed as keeping being disposed at the retainer of a plurality of rollers between said eccentric body and the external gear.

12. swing internally meshed type gearing as claimed in claim 11 is characterized in that,

Said roller is set at the offset greater than said eccentric body with the scope that the state that is supported on said union body moves along radial direction.