CN104455054B - Sealing structure for constant-speed coupling - Google Patents
Sealing structure for constant-speed coupling Download PDFInfo
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- CN104455054B CN104455054B CN201410465067.2A CN201410465067A CN104455054B CN 104455054 B CN104455054 B CN 104455054B CN 201410465067 A CN201410465067 A CN 201410465067A CN 104455054 B CN104455054 B CN 104455054B
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- Prior art keywords
- annular
- cup
- homokinetic joint
- shaped portion
- bottom outer
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- 238000007789 sealing Methods 0.000 title abstract description 16
- 230000008878 coupling Effects 0.000 title abstract description 7
- 238000010168 coupling process Methods 0.000 title abstract description 7
- 238000005859 coupling reaction Methods 0.000 title abstract description 7
- 239000007787 solid Substances 0.000 claims description 59
- 238000010276 construction Methods 0.000 claims description 45
- 238000005452 bending Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 6
- 241001125879 Gobio Species 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000013536 elastomeric material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Retarders (AREA)
- Sealing With Elastic Sealing Lips (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Of Bearings (AREA)
Abstract
The invention relates to a sealing structure (60) for a constant-speed coupling. The sealing structure (60) comprises an annular body (70) installed on a shaft part (18) of an outer part (66) of the constant-sped coupling (12). The annular body (70) is provided with an annular recessed part (84) and an annular wall part (88). The annular recessed part is recessed towards the bottom outer surface (64a) of the annular part (64). The annular wall part (88) is nearer to a sealing part (38) than the bottom outer surface (64a) of the annular part (64). In the annular recessed part (84), a labyrinth seal structure is arranged in the annular recessed part (84) by entering a second lip part (44) of the sealing part (38). The annular wall part (88) is used for bearing a load bearing part which is given according to pressure (or load) when the outer part (66) is allowed to be separated from a differential case (34).
Description
Technical field
The present invention relates to the homokinetic joint seal construction sealed between homokinetic joint and driving means.
Background technology
The driving means such as the differential gear 10 shown in electromotor, Figure 10 are equipped with motor-driven in-car, are produced by the driving means
Raw driving force is passed to tire etc. via homokinetic joint 12 and transmission axle 14.
Homokinetic joint 12 shown in Figure 10 is the homokinetic joint of so-called tripod-type.That is, the homokinetic joint 12
With external part 20, the external part 20 has：It is formed with bottom outlet 15 and in the substantially cup-shaped portion 16 of cylindrical shape, and from this
The axle portion 18 that the bottom outer surface of cup-shaped portion 16 is projected.In the internal perisporium for having bottom outlet 15,3 rail grooves are formed with a concave manner
22。
Also, there is bottom outlet 15 to be inserted into the outer inner part 24 being embedded in transmission axle 14 described.Inner part 24 with to
The protuberance (gudgeon) 26 that each rail groove 22 is projected, is provided with roller 30 via needle bearing 28 on the gudgeon 26.The roller
30 are rotatably inserted in the rail groove 22.Rolled in rail groove 22 by making roller 30 so that transmission axle 14 along
The arrow X-direction displacement of Figure 10.
Covered by joint protective cover 32 from transmission axle 14 to cup-shaped portion 16.Profit is sealed with the joint protective cover 32
Cunning fat.
On the other hand, the axle portion 18 of external part 20 is inserted in the differential carrier 34 for constituting differential gear 10, and at this
It is (not shown) with axle shaft gear in differential carrier 34 to link.
Structure above is known, for example, in Japanese Unexamined Patent Publication 10-217798 publication, Japanese Unexamined Patent Publication 2004-
Make to record in No. 263846 publications etc..
Here, be provided between the external part 20 and differential carrier 34 of homokinetic joint 12 for carrying out oil seal in case
Only the seal member 38 of oil leakage is (public for example, referring to No. 3872655 publications of Japanese Patent Publication No., Japanese Patent Publication No. 4505365
Report).This point is illustrated with reference to Figure 11.
Seal member 38 is typically made up of elastomeric material, as shown in figure 11, is had：1st lip 40 and half-round 42, they
With the side perisporium sliding contact of axle portion 18；And the 2nd lip 44, the 2nd lip 44 projected from the 1st lip 40, and with
From axle portion 18 towards the bottom outer surface of cup-shaped portion 16 by towards the footpath of cup-shaped portion 16 outward in the way of project.Seal member
38 are arranged on differential carrier 34 using the sheet metal 46 of the inside for being arranged on the seal member 38.
It is in the bottom outer surface of cup-shaped portion 16, roundabout in the way of around axle portion 18 to be formed with endless groove 48.2nd lip 44
Front end enter in the endless groove 48, so as to form so-called labyrinth sealing construction.
When making homokinetic joint 12 depart from differential carrier 34 for putting maintenance into practice, as shown in Figure 10, to external part 20
Bottom outer surface and the front end face of differential carrier 34 between clearance C 1 be inserted into bottle opener 50 etc..Inclined by making the bottle opener 50
Dynamic, external part 20 leaves differential carrier 34 according to lever principle.
Endless groove 48 is by the bottom outer after external part 20 is obtained using forging processing etc. to the external part 20
What face was implemented machining etc. and was formed.That is, in order to obtain being formed with the external part 20 of endless groove 48, troublesome operation is needed,
And need long-time.
Therefore, as shown in figure 12, it is contemplated that using the annular solid of the annular recessed portion 52 for forming oriented cup-shaped portion 16 side depression
54.In this case, by making the 2nd lip 44 into annular recessed portion 52 forming labyrinth sealing construction.
However, now, the clearance C 2 between cup-shaped portion 16 and differential carrier 34 is more than clearance C 1.Therefore, make bottle opener 50 etc.
It is difficult for playing a role as lever.Therefore, it is also difficult to make homokinetic joint 12 depart from differential carrier 34.
The content of the invention
The main object of the present invention is to provide a kind of constant speed connection of external part that can efficiently obtain homokinetic joint
Joint seal construction.
It is a further object of the present invention to provide a kind of homokinetic joint that external part can be made to be easily separated from differential carrier is used
Seal construction.
According to an embodiment of the present invention, there is provided a kind of homokinetic joint seal construction, which is to homokinetic joint
Sealed and driving means between, the homokinetic joint has：It is formed with the cup-shaped portion of bottom outlet and from the cup-shaped portion
Bottom outer surface project axle portion, wherein, the homokinetic joint has with seal construction：
Seal member, which is disposed between the driving means and the axle portion, with prominent to the cup-shaped portion side
Lip；And
Annular solid, which is arranged in the axle portion of the homokinetic joint,
The bottom outer surface side depression of the oriented cup-shaped portion is formed on the annular solid and makes what the lip was entered
Annular recessed portion, and the annular recessed portion outer circumferential side be provided with compared with the bottom outer surface of the cup-shaped portion be biased against it is described close
The annular wall of envelope component side.
In the structure shown here, the annular recessed portion using annular solid and the lip shape into the seal member in the annular recessed portion
Construct into labyrinth sealing.Therefore, excellent sealing function is presented.
Also, as the outer circumferential side in annular recessed portion is configured with annular wall, and the annular wall is biased against seal member
Side, thus while annular solid is provided with, but the gap between the bottom outer surface and annular wall of the cup-shaped portion of external part is little.
Therefore, if making which fascinate after bottle opener etc. is inserted in the gap, pressing force acts on the annular wall.That is, lever principle
Played a role in the way of making the annular wall become application point.In other words, annular wall becomes and bears for from driving dress
Put the load receiving portion of the pressing force (load) for removing homokinetic joint.
Work with above-mentioned pressing force, homokinetic joint easy displacement on the direction for leave driving means.As
As a result, homokinetic joint can be made to be easily separated from driving means.
It is additionally, since and annular recessed portion is formed with annular solid, thus without the need for endless groove is formed in cup-shaped portion.I.e., not
Homokinetic joint be can be obtained by with troublesome machining etc. is carried out.As such, it is possible to efficiently obtain homokinetic joint.
Preferably, the bottom outer surface of the annular recessed portion of annular solid is abutted with the bottom outer surface of cup-shaped portion.In the feelings
Under condition, as the pressing force for acting on annular wall is passed to rapidly cup-shaped portion (homokinetic joint), thus constant speed can be made
Shaft coupling expeditiously departs from driving means.
And, it is preferred that annular wall is located near the periphery edge of cup-shaped portion.Now, due to fulcrum and application point
It is close to, thus homokinetic joint displacement can be made with smaller pressing force.That is, homokinetic joint change is removed from driving means
Must be easier.
Annular solid can be obtained as such annular solid：For example, it is formed with by making the bending of individual ring part
Annular recessed portion and annular wall.In this case, this have the advantage that, it is possible to reduce the part count of composition annular solid, and because
This can be with reduces cost.
Or, annular solid can be constituted by making the 1st endless member and the engagement of the 2nd endless member.In this case, only
The 1st endless member that is bonded with each other and the 2nd endless member is used to form annular recessed portion, and by the side of the 2nd endless member
Face is used as annular wall.
In this case, the 2nd endless member can be solid.So, it is to avoid when above-mentioned pressing force acts on ring
Damage by pressure the 2nd endless member during shape wall portion.
Preferably, annular solid is made of stainless steel.Due to the excellent corrosion resistance of such annular solid, it is thus possible to
Sealing property is maintained in long-time.
Above-mentioned objects, features and advantages are easy to understand from the explanation of implementation below described with reference to the accompanying drawings.
Description of the drawings
Fig. 1 is that the homokinetic joint seal construction of the 1st embodiment of the present invention is arranged on differential gear (to drive dress
Put) and homokinetic joint between in the case of want portion's general profile chart.
Fig. 2 is the enlarged view of Fig. 1.
Fig. 3 is the enlarged view of a portion of the homokinetic joint seal construction of the 2nd embodiment of the present invention.
Fig. 4 is the enlarged view of a portion of the homokinetic joint seal construction of a modified example of the 2nd embodiment.
Fig. 5 is the enlarged view of a portion of the homokinetic joint seal construction of another modified example of the 2nd embodiment.
Fig. 6 is the enlarged view of a portion of the homokinetic joint seal construction of the another modified example of the 2nd embodiment.
Fig. 7 is sealed using the 2nd endless member as the homokinetic joint in the case of solid in the 2nd embodiment
The enlarged view of a portion of construction.
Fig. 8 is joined using the 2nd endless member as the constant speed of the modified example in the case of solid in the 2nd embodiment
The enlarged view of a portion of joint seal construction.
Fig. 9 is using the 2nd endless member as the constant speed of another modified example in the case of solid in the 2nd embodiment
The enlarged view of a portion of shaft coupling seal construction.
Figure 10 is that the homokinetic joint seal construction of prior art is arranged on differential gear (driving means) and constant speed
Portion's general profile chart is wanted in the case of between shaft coupling.
Figure 11 is the enlarged view of Figure 10.
Figure 12 is to illustrate to form labyrinth sealing construction and be provided with the homokinetic joint seal construction of annular solid
Enlarged view of a portion.
Specific embodiment
Hereinafter, enumerate excellent for the homokinetic joint seal construction (being simply recited as " seal construction " below) of the present invention
The embodiment of choosing, is described in detail referring to the drawings.In addition, to the structural element identical structure shown in Figure 10～Figure 12
Key element substantially encloses identical reference numeral, and description is omitted.
Fig. 1 be the seal construction 60 of the 1st embodiment is arranged on as a kind of driving means differential gear 10 and wait
Portion's general profile chart is wanted in the case of between fast shaft coupling 62.Also, Fig. 2 is the enlarged view of Fig. 1.
It is the homokinetic joint of so-called tripod-type that homokinetic joint 62 is same as above, and which has external part 66, should
External part 66 has：Be formed with bottom outlet 15 and the cup-shaped portion 64 in substantially cylindrical shape, and from the bottom of the cup-shaped portion 64
The axle portion 18 that outer surface 64a is projected.Here, external part 66 is formed without ring-type except the bottom outer surface 64a in cup-shaped portion 64
Groove 48 (with reference to Figure 10 and Figure 11), and beyond being created as tabular surface, it is configured to identical with the external part 20.
The outer inside being embedded in transmission axle 14 is inserted in the bottom outlet 15 that has being formed in external part 66 (cup-shaped portion 64)
Part 24.Also, roller 30 is installed via needle bearing 28 on the gudgeon 26 of part 24 internally, roller 30 is being formed at bottom
Roll in rail groove 22 in hole 15.Joint protective cover 32 is installed to cup-shaped portion 64 from transmission axle 14, protects in the joint
Lubrication fat is sealed with shield 32.
The axle portion 18 of external part 66 is inserted in the differential carrier 34 for constituting differential gear 10, and in the differential carrier 34
Interior link (not shown) with axle shaft gear.
The seal construction 60 of the 1st embodiment is arranged between the external part 66 of homokinetic joint 62 and differential carrier 34,
Oily leakage is prevented to carrying out sealing between the two.
In the 1st embodiment, seal construction 60 includes：Seal member 38 on differential carrier 34, and install
Annular solid 70 in axle portion 18.Wherein, seal member 38 is made up of elastomeric material (or resin material), has：1st lip
40 and half-round 42, their side perisporium sliding contacts with axle portion 18；And the 2nd lip 44, the 2nd lip 44 is from the described 1st
Lip 40 is projected, and with the bottom outer surface 64a from axle portion 18 towards cup-shaped portion 64 with outside towards the footpath of cup-shaped portion 64
The mode of side is projected.Seal member 38 in the presence of the sheet metal 46 of the inside for being arranged at the seal member 38, as mentioned above
On differential carrier 34.
On the other hand, through hole 72 is formed with annular solid 70, axle portion 18 is pressed in the through hole 72.By this
Press-in, mounts and positions annular solid 70 and is fixed in axle portion 18.
It will be appreciated from figure 2 that annular solid 70 is made up of single (1) endless member 74.That is, endless member 74 by along
Axle portion 18 extends and is formed with the through hole 72, afterwards, to the direction quilt that the bottom outer surface 64a along cup-shaped portion 64 extends
Bending.Then, after being bent to the direction left and extend with axle portion 18 substantially in parallel from bottom outer surface 64a, temporarily
And extend with bottom outer surface 64a substantially in parallel, then be bent in the way of towards bottom outer surface 64a and extend.As a result,
On annular solid 70 (endless member 74), from inner circumferential side (being close to the side of axle portion 18) towards outer circumferential side (away from the one of axle portion 18
Side) it is formed with the 1st inflection point 76, the 2nd inflection point 78, the 3rd inflection point 80 and the 4th inflection point 82.
With the 1st inflection point 76 of formation and the 2nd inflection point 78 on endless member 74, and define annular recessed portion 84.That is,
From the bottom that the position of the 1st inflection point 76 to the 2nd inflection point 78 is annular recessed portion 84.The bottom outer surface 84a of annular recessed portion 84
Abut with the bottom outer surface 64a of cup-shaped portion 64.
Also, with the 2nd inflection point 78 of formation, the 3rd inflection point 80 and the 4th inflection point 82, and on endless member 74
Define the groove 86 being recessed in the way of leaving from the bottom outer surface 64a of cup-shaped portion 64.Certainly, the groove 86 is located at annular recessed portion
84 outer circumferential side.
From the position of the 3rd inflection point 80 to the 4th inflection point 82 equivalent to the groove 86 bottom outer surface, and formed with from
The bottom outer surface 64a of cup-shaped portion 64 leaves and wall that roundabout mode extends.That is, the bottom outer surface of groove 86 is (from the 3rd bending
The outer surface at the position of 80 to the 4th inflection points 82 of point) it is annular wall 88.As groove 86 is located at the outer circumferential side of annular recessed portion 84,
Thus annular wall 88 also is located at the outer circumferential side of annular recessed portion 84.Also, annular wall 88 is along the bottom outer of cup-shaped portion 64
The periphery edge of face 64a annularly extends.
And, the annular wall 88 is close to seal member 38 compared with the bottom outer surface 64a of cup-shaped portion 64.In other words
Say, annular wall 88 is biased against 38 side of the seal member compared with bottom outer surface 64a.
The annular solid 70 (endless member 74) constituted by more than is made up of rustless steels such as SUS304.
When annular solid 70 (endless member 74) is pressed in the axle portion 18 of external part 66, the 2nd lip of seal member 38
Portion 44 enters the annular recessed portion 84.Labyrinth sealing construction is formed by the entrance.
What the seal construction 60 of the 1st embodiment was substantially constituted by more than, below, its action effect is said
It is bright.
The bottom outer surface 64a of the cup-shaped portion 64 of external part 66 is to be formed without endless groove 48 as mentioned above (with reference to Figure 10
And Figure 11) tabular surface.That is, without the need for implementing to the external part 66 for forming the troublesome work such as the machining of endless groove 48
Industry.Therefore, it can efficiently obtain the external part 66.
On the other hand, by bending endless member 74 etc. in extrusion molding mode arrange the 1st inflection point the 76, the 2nd bending
The 78, the 3rd inflection point 80 of point and the 4th inflection point 82, thus, make to be formed with annular recessed portion 84, formed in outer circumferential side in inner circumferential side
There is 70 molding of annular solid of groove 86.So, annular solid 70 can easily and be easily obtained by bending 1 endless member 74
Arrive.
In order to form seal construction 60, the axle portion 18 of external part 66 is pressed in the through hole 72 of annular solid 70.Press-in
Till lasting till that the bottom outer surface 84a of annular recessed portion 84 of annular solid 70 is abutted with the bottom outer surface 64a of cup-shaped portion 64.Most
Eventually, while the bottom outer surface 84a of annular recessed portion 84 of annular solid 70 is abutted with the bottom outer surface 64a of cup-shaped portion 64,
The opening of groove 86 is inaccessible by the bottom outer surface 64a of cup-shaped portion 64.
Afterwards, axle portion 18 is inserted in differential carrier 34 and link (not shown) with axle shaft gear.It is accompanied by this, in advance
2nd lip 44 of the seal member 38 on differential carrier 34 is entered in annular recessed portion 84, as a result, forming labyrinth type
Seal construction.Constructed using the labyrinth sealing, oil is prevented between the external part 66 and differential carrier 34 of homokinetic joint 62
Leakage.
In this condition, as annular solid 70 is made of stainless steel, thus the excellent corrosion resistance of the annular solid 70.Cause
This, even if in the case where oil is contacted with annular solid 70, it is also possible to be effectively prevented from annular solid 70 and corrode.
During either one putting maintenance into practice in homokinetic joint 62 or differential gear 10, as shown in figure 1, to annular wall
Clearance C 3 between 88 and the front end face of differential carrier 34 is inserted into such as bottle opener 50.As annular wall 88 is biased against seal member
38 sides, thus the clearance C 3 between the annular wall 88 and differential carrier 34 is fully little, therefore when making bottle opener 50 fascinate, this
The front end of son 50 is abutted with annular wall 88.
As a result, annular wall 88 is pressed by the front end of bottle opener 50.It is thus understood that, annular wall 88 is performed as load
The effect of lotus receiving portion, when homokinetic joint 62 is removed from differential carrier 34, the load receiving portion is born as this and is applied
Pressing force (load).
By the pressing, according to lever principle, external part 66 leaves differential carrier 34.Outside due to the bottom of annular recessed portion 84
Surface 84a is abutted with the bottom outer surface 64a of cup-shaped portion 64, thus in the pressing, (load is born to be given to annular wall 88
Portion) load be expeditiously delivered to cup-shaped portion 64.Therefore, external part 66 is easily to the direction position for leaving differential carrier 34
Move.That is, homokinetic joint 62 easily departs from differential carrier 34.
So, by configuring the annular recessed portion 84 for entering the 2nd lip 44 in the inner circumferential side of annular solid 70, and in the ring-type
Recess 84 outer circumferential side configuration annular wall 88 (load receiving portion), can maintain labyrinth sealing construct while, according to
Lever principle makes homokinetic joint 62 be easily separated from differential carrier 34.It is additionally, since without the need for forming endless groove 48 in cup-shaped portion 64,
Thus external part 66 can be easily obtained as mentioned above.
And, in the 1st embodiment, as annular solid 70 is made up of individual ring part 74, it is thus possible to obtaining section
Number of packages mesh it is few and can reduces cost advantage.
Annular solid is not particularly limited in the annular solid 70 being made up of individual ring part 74, it is also possible to by making 2 ring-types
Part (the 1st endless member and the 2nd endless member) engages to constitute.Below, illustrate in this, as the 2nd embodiment.Separately
Outward, to enclosing identical reference numeral with the structural element identical structural element shown in Fig. 1 and Fig. 2, description is omitted.
And, it is assumed that the annular solid (the 1st endless member and the 2nd endless member) for illustrating below is also made of stainless steel.
Fig. 3 is that the annular solid 102a and seal member 38 for illustrating the seal construction 100a for constituting the 2nd embodiment wants portion
Amplification view.In this case, the upper end and section for making the 1st endless member 104a that section is substantially U-shaped is big
Cause the bottom of the 2nd endless member 106a of L-shaped for example to engage by welding etc., thus constitute annular solid 102a.That is, weld
Socket part position is the position suitable with the 3rd inflection point 80 of the annular solid 70 in the 1st embodiment, the 2nd endless member 106a configurations
In the outer circumferential side of the 1st endless member 104a.
By the 1st endless member 104a being made in substantially U-shaped, and form annular recessed portion 84.The bottom of the annular recessed portion 84
Portion outer surface 84a is abutted with the bottom outer surface 64a of cup-shaped portion 64 as the 1st embodiment.Then, seal member 38
2nd lip 44 enters annular recessed portion 84, is consequently formed labyrinth sealing construction.
Also, the one side of the 2nd roundabout endless member 106a is used as annular wall near the periphery edge of cup-shaped portion 64
Portion 88 plays a role.That is, the one side of the 2nd endless member 106a become from differential carrier 34 remove external part 66 when load hold
By portion.
As shown in Figure 4, it is possible to use be configured with the outer circumferential side of the 1st endless member 104b that section is substantially U-shaped
Section is the annular solid 102b of the 2nd endless member 106b of substantially U-shaped constituting seal construction 100b.In this case,
The lower surface of the 2nd endless member 106b is made to engage with the upper surface of the 1st endless member 104b.
Or, as shown in Figure 5, it is possible to use match somebody with somebody for the outer circumferential side of the 1st endless member 104c of generally L-shaped shape in section
Put the annular solid 102c of the 2nd endless member 106c that section is substantially U-shaped to constitute seal construction 100c.In the situation
Under, formed using the inner circumferential side end face of the 1st endless member 104c and the 2nd endless member 106c that section is generally L-shaped shape
Annular recessed portion 84.Also, the one side of the 2nd endless member 106c becomes annular wall 88.
And, as shown in fig. 6, section can be adopted for generally L-shaped shape and the bottom outer of its diameter and cup-shaped portion 64
The 1st roughly equal endless member 104d of the diameter of face 64a.In this case, the periphery edge of the 1st endless member 104d covers
The periphery edge of external part 66.As long as making the 2nd endless member 106d and the 1st endless member that section is substantially U-shaped
The periphery edge of 104d engages and on the basis of formation annular solid 102d, constitutes seal construction 100d.
In this case, come using the inner circumferential side end face of a part and the 2nd endless member 106d of the 1st endless member 104d
Form annular recessed portion 84.Also, the one side of the 2nd endless member 106d becomes annular wall 88.
Certainly, in either case, can access and the 1st embodiment identical action effect.
Furthermore, it is possible to make the 2nd endless member be solid.I.e., for example, as shown in fig. 7, the of wall thickness and banding can be made
The diameter substantially phase of the 2 endless member 106e and bottom outer surface 64a that section is generally L-shaped shape and its diameter and cup-shaped portion 64
Deng the 1st endless member 104e engagements seal construction 100e is constituted obtaining annular solid 102e, on this basis.
Or, as shown in figure 8, the 2nd endless member 106f of wall thickness and banding and section can be made for substantially U-shaped and
The periphery edge of its diameter 1st endless member 104f roughly equal with the diameter of the bottom outer surface 64a of cup-shaped portion 64 engages
To form annular solid 102f.In this case, constitute seal construction 100f.
And, as shown in figure 9, the lower surface of the 2nd endless member 106g of wall thickness and banding and section can be made to be substantially U
The outer circumference side edge face of word shape and its diameter 1st endless member 104g less than the diameter of the bottom outer surface 64a of cup-shaped portion 64
Engage to form annular solid 102g, and constitute seal construction 100g.
In the case of either one shown in Fig. 7～Fig. 9, the one side of the 2nd endless member 106e, 106f, 106g all into
For annular wall 88.When addition of pressing force to the annular wall 88, the 2nd endless member 106e, 106f, 106g is due to being
Solid, thus be difficult to damage by pressure.That is, the 2nd endless member 106e, 106f, 106g (annular wall 88) presents sufficiently resistance to
Property, maintains shape in long-time long.Therefore, remove external part 66 from differential carrier 34 to become easier in long-time.
The present invention is not particularly limited in above-mentioned embodiment, can carry out without departing from the scope of spirit of the present invention
Various changes.
For example, as long as annular wall 88 is configured the outer circumferential side in annular recessed portion 84, especially do not need to be configured in
Near the periphery edge of cup-shaped portion 64.I.e., for example, even if annular wall 88 is configured the diametric(al) midriff in cup-shaped portion 64
Near, also especially do not affect.
Also, differential carrier 34 is not particularly limited in the differential carrier, or Japanese Patent Publication No. of the shape shown in Fig. 1
The differential carrier of the shape shown in No. 3872655 publications, No. 4505365 publications of Japanese Patent Publication No. etc..
And, the driving means that seal construction 60 is arranged between homokinetic joint 62 are not limited to differential gear 10,
It can also be electromotor etc..
Claims (7)
1. with seal construction (60), which is close to carrying out between homokinetic joint (12) and driving means (10) for a kind of homokinetic joint
Envelope, the homokinetic joint (12) have：Be formed with the cup-shaped portion (64) of bottom outlet (15), and from the bottom of the cup-shaped portion (64)
The prominent axle portion (18) of portion's outer surface (64a), it is characterised in that the homokinetic joint seal construction (60) has：
Seal member (38), which is disposed between the driving means (10) and the axle portion (18), with to the cup-shaped portion
(64) lip (44) that side projects；And
Annular solid (70), which is arranged in the axle portion (18) of the homokinetic joint (12),
Bottom outer surface (64a) the side depression of the oriented cup-shaped portion (64) is formed on the annular solid (70) and the lip is made
The annular recessed portion (84) that portion (44) enters, and the outer circumferential side in the annular recessed portion (84) is provided with and the cup-shaped portion (64)
Bottom outer surface (64a) compares the annular wall (88) for being biased against the seal member (38) side,
The annular wall (88) is supported in the bottom outer surface (64a) of the cup-shaped portion (64).
2. homokinetic joint according to claim 1 is with seal construction (60), it is characterised in that the annular solid (70)
The bottom outer surface (64a) of the annular recessed portion (84) is abutted with the bottom outer surface (64a) of the cup-shaped portion (64).
3. homokinetic joint according to claim 1 and 2 is with seal construction (60), it is characterised in that the annular wall
(88) near the periphery edge of the cup-shaped portion (64).
4. homokinetic joint according to claim 1 is with seal construction (60), it is characterised in that the annular solid (70) is
The annular solid of the annular recessed portion (84) and the annular wall (88) is formed with by making individual ring part (74) bending.
5. homokinetic joint according to claim 1 is with seal construction (100a), it is characterised in that the annular solid
(102a) it is to be formed with the annular recessed portion by making the 1st endless member (104a) and the engagement of the 2nd endless member (106a)
(84), and using the one side of the 2nd endless member (106a) as the annular wall (88) annular solid.
6. homokinetic joint according to claim 5 is with seal construction (100e), it is characterised in that the 2nd annulus
Part (106e) is solid.
7. homokinetic joint according to claim 1 is with seal construction (60), it is characterised in that the annular solid (70) by
Rustless steel is made.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013197169A JP5879315B2 (en) | 2013-09-24 | 2013-09-24 | Seal structure for constant velocity joint |
| JPJP2013-197169 | 2013-09-24 | ||
| JP2013-197169 | 2013-09-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104455054A CN104455054A (en) | 2015-03-25 |
| CN104455054B true CN104455054B (en) | 2017-04-12 |
Family
ID=52832083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410465067.2A Expired - Fee Related CN104455054B (en) | 2013-09-24 | 2014-09-12 | Sealing structure for constant-speed coupling |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5879315B2 (en) |
| CN (1) | CN104455054B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6518106B2 (en) * | 2015-03-27 | 2019-05-22 | Ntn株式会社 | Motor drive with reduction gear for automobile |
| JP6576752B2 (en) * | 2015-09-09 | 2019-09-18 | Ntn株式会社 | Seal structure and manufacturing method thereof |
| CN105402381A (en) * | 2015-12-14 | 2016-03-16 | 南京安维士传动技术股份有限公司 | Dual-ring labyrinth seal structure for gearbox |
| JP2018053969A (en) * | 2016-09-27 | 2018-04-05 | トヨタ自動車株式会社 | Oil seal |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002276820A (en) * | 2001-03-14 | 2002-09-25 | Honda Motor Co Ltd | Labyrinth seal structure for constant velocity joint |
| CN1673563A (en) * | 2004-02-27 | 2005-09-28 | Gkn动力传动系统有限公司 | Connecting apparatus between journal and a universal joint |
| JP2006281939A (en) * | 2005-03-31 | 2006-10-19 | Honda Motor Co Ltd | Bearing device for driving wheel |
| CN1908474A (en) * | 2005-08-05 | 2007-02-07 | 株式会社丰田自动织机 | Drive shaft support structure for use in industrial vehicle |
| WO2008149519A1 (en) * | 2007-06-01 | 2008-12-11 | Ntn Corporation | Bearing device for wheel |
| CN102848852A (en) * | 2011-06-29 | 2013-01-02 | Skf公司 | Static sealing device for wheel hub assemblies connected to constant velocity joints |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002087012A (en) * | 2000-07-10 | 2002-03-26 | Koyo Seiko Co Ltd | Hub unit for vehicle |
-
2013
- 2013-09-24 JP JP2013197169A patent/JP5879315B2/en not_active Expired - Fee Related
-
2014
- 2014-09-12 CN CN201410465067.2A patent/CN104455054B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002276820A (en) * | 2001-03-14 | 2002-09-25 | Honda Motor Co Ltd | Labyrinth seal structure for constant velocity joint |
| CN1673563A (en) * | 2004-02-27 | 2005-09-28 | Gkn动力传动系统有限公司 | Connecting apparatus between journal and a universal joint |
| JP2006281939A (en) * | 2005-03-31 | 2006-10-19 | Honda Motor Co Ltd | Bearing device for driving wheel |
| CN1908474A (en) * | 2005-08-05 | 2007-02-07 | 株式会社丰田自动织机 | Drive shaft support structure for use in industrial vehicle |
| WO2008149519A1 (en) * | 2007-06-01 | 2008-12-11 | Ntn Corporation | Bearing device for wheel |
| CN102848852A (en) * | 2011-06-29 | 2013-01-02 | Skf公司 | Static sealing device for wheel hub assemblies connected to constant velocity joints |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5879315B2 (en) | 2016-03-08 |
| CN104455054A (en) | 2015-03-25 |
| JP2015064025A (en) | 2015-04-09 |
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