CA1039615A - Valve for venting the interior of a rotatable hollow element - Google Patents
Valve for venting the interior of a rotatable hollow elementInfo
- Publication number
- CA1039615A CA1039615A CA238,205A CA238205A CA1039615A CA 1039615 A CA1039615 A CA 1039615A CA 238205 A CA238205 A CA 238205A CA 1039615 A CA1039615 A CA 1039615A
- Authority
- CA
- Canada
- Prior art keywords
- valve
- passage
- rotatable
- interior
- axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000013022 venting Methods 0.000 title claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/84—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor
- F16D3/843—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers
- F16D3/845—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers allowing relative movement of joint parts due to the flexing of the cover
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
- F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
- F16D3/226—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines in each coupling part lying on a cylinder co-axial with the respective coupling part
- F16D3/227—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines in each coupling part lying on a cylinder co-axial with the respective coupling part the joints being telescopic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
- F16K24/04—Devices, e.g. valves, for venting or aerating enclosures for venting only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/22—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts
- F16D3/223—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
- F16D2003/2232—Elements arranged in the hollow space between the end of the inner shaft and the outer joint member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/84—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor
- F16D3/843—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers
- F16D3/845—Shrouds, e.g. casings, covers; Sealing means specially adapted therefor enclosed covers allowing relative movement of joint parts due to the flexing of the cover
- F16D2003/846—Venting arrangements for flexible seals, e.g. ventilation holes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2300/00—Special features for couplings or clutches
- F16D2300/06—Lubrication details not provided for in group F16D13/74
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Safety Valves (AREA)
- Taps Or Cocks (AREA)
- Pens And Brushes (AREA)
- Centrifugal Separators (AREA)
Abstract
VALVE FOR VENTING THE INTERIOR OF A ROTATABLE HOLLOW ELEMENT
Abstract of the Disclosure A valve for venting the interior of a rotatable hollow element which is at least partially filled with liquid comprises a valve member which is movable transversely with respect to the axis of rotation of the rotatable element into and out of engage-ment with a valve seat to open and close a valve passage in which the valve seat is formed. A spring maintains the valve member in closed position when the rotatable element is at a stand-still.
The valve passage has one end opening within the hollow member offset from its rotatable axis and the other end opens to the exterior of the element. The major portion of the mass of the valve member is also offset from the axis of rotation but in a direction opposite from the end of the valve opening. The mass of the valve member is such that at a predetermined rotary speed centrifugal force acting against the valve member will overcome the spring force to move the valve member away from the valve seat and to open the valve passage.
Abstract of the Disclosure A valve for venting the interior of a rotatable hollow element which is at least partially filled with liquid comprises a valve member which is movable transversely with respect to the axis of rotation of the rotatable element into and out of engage-ment with a valve seat to open and close a valve passage in which the valve seat is formed. A spring maintains the valve member in closed position when the rotatable element is at a stand-still.
The valve passage has one end opening within the hollow member offset from its rotatable axis and the other end opens to the exterior of the element. The major portion of the mass of the valve member is also offset from the axis of rotation but in a direction opposite from the end of the valve opening. The mass of the valve member is such that at a predetermined rotary speed centrifugal force acting against the valve member will overcome the spring force to move the valve member away from the valve seat and to open the valve passage.
Description
1(~39615 The present invention relates to a valve for venting the ~-interior of a rotatable hollow element-which is at least partially filled with liquid, more particularly, to such a valve which is normally closed and opens when the rotatable element rotates-at a predetermined speed.
It has been known to provide various forms of rotatable hollow elements, such as universal joints and telescoping shaft connections, which are partially filled with a li~uid such as a lubricant with a valve for venting the interior of the rotatable hollow element. These valves function primarily for lubricating and venting these components which are subjected to wear. The ; valves are generally provided with a passage that remains open -`
after the lubri~ant has been introduced into the valve. The con-tinuously open passage thus accomplishes the venting function.
- Such valves are generally disclosed in the German Gebrauchmuster 7 040 440 and the German Offenlegungschrift 2 055 066.
Such valves have been generally unsa~isfactory since they could only be used in those rotatable elements which when stationary the lu~ricant could not escape because of the arrange- -ment of the valve. The valve opening was located outside of the level of the lubricant or the lubricant had such a high viscosity i, , that lea~age thereof was not possible.
It is therefore the pr~ipal object of the present inven-tion to provide a novel and improved valve for venting the interior of a rotatable hollow element which is at least partially filled with a liquid.
It is another object of the present invention to provide such a valve which will vent those rotatable elements filled with ~D
It has been known to provide various forms of rotatable hollow elements, such as universal joints and telescoping shaft connections, which are partially filled with a li~uid such as a lubricant with a valve for venting the interior of the rotatable hollow element. These valves function primarily for lubricating and venting these components which are subjected to wear. The ; valves are generally provided with a passage that remains open -`
after the lubri~ant has been introduced into the valve. The con-tinuously open passage thus accomplishes the venting function.
- Such valves are generally disclosed in the German Gebrauchmuster 7 040 440 and the German Offenlegungschrift 2 055 066.
Such valves have been generally unsa~isfactory since they could only be used in those rotatable elements which when stationary the lu~ricant could not escape because of the arrange- -ment of the valve. The valve opening was located outside of the level of the lubricant or the lubricant had such a high viscosity i, , that lea~age thereof was not possible.
It is therefore the pr~ipal object of the present inven-tion to provide a novel and improved valve for venting the interior of a rotatable hollow element which is at least partially filled with a liquid.
It is another object of the present invention to provide such a valve which will vent those rotatable elements filled with ~D
-2~
.
liquids of low viscosity and wherein the valve could be located below the level of the liquid existing when the rotatable member is at a standstill.
It is another object of the present invention to provide ; such a valve for venting rotatable hollow elements which would avoid losses of liquids from the element after the valve has opened.
According to one aspect of the present invention a valve for venting the interior of a rotatable hollow element which is at least partially filled with liquid may comprise a valve hous-ing having a valve passage therethrough with a valve seat in the valve passage. The valve passage has one end opening into the interior of the rotatable hollow element and the other end opens :, , to the exterior of the element. A valve member is within the valve housing and is movable transversely of the axis of rotation of the rotatable element. The valve member is engagable with the valve seat to open and close the valve passage. The one end of the passage within the hollow element is offset from the axis of rotation and the major portion of the mass of the valve member is also offset from the axis of rotation but opposed from the one end of the passage. The valve member is acted upon by spring means which urge the valve member into engagement with the valve -seat to close the valve passage when the rotatable element is stationary. The mass of the valve member is such that at a pre-determined rotary speed the centrifugal force acting upon the valve member will overcome the spring force to open the valve passage and thereby provide communication between the interior of the rotatable hollow element and the exterior thereof.
~.
- . - . . . . .
` 1~396~5 The present invention has the advantage of permitting the location of the valve opening in the region of the level of the liquid since the valve is closed when the rotatable element is at a standstill. Because of the arrangement of the valve member and the valve seat and of the valve passage which opens into the interior of the rotatable member, any liquid which flows into the ~ valve passage and also into the area of the valve seat ~hen the rotatable member is stationary, will be thrown off by centrifugal force when the element begins to rotate. The valve is opened only after a certain predetermined rotary speed is attained at which rotary speed the liquid is subjected to such a centrifugal force so as to form a liquid jacket or coating within the interior of the rotatable element. A venting valve according to the present invention is particularly advantageous with respect to rotatable elements rotating at high speeds because of over-- pressure and the risk of expansion in elastic gaskets which leads to high wear ; .
and the possibility of destruction of the gaskets and seals.
Such venting valves are particularly useful in the case of driving couplings such as in motor vehicles which may be cov-ered with a sleeve or a bellows to prevent expansion of the sleevebecause of heating of any gases present or forming in the interior of the joint. Such a valve also may prevent damage to a drive joint because of o~er pressure occurring as a result of a change in volume produced by reciprocating displacement or bending of elements of a joint coupling or a universal joint.
-Other objects and advantages of the present invention will be apparent upon reference to the accompanying description when taken in conjunction with the following drawings, which are ' ` 103961S
exemplary, wherein;
FIG. 1 is an elevational view partially in section of a universal joint provided with the venting valve according to the present invention;
FIG. 2 is a sectional view of a portion of the valve of FIG. 1 but in enlarged scale and showing the construction of the venting valve; and - FIG. 3 is a view similar to that of FIG. 2 but showing - the venting valve mounted on the exterior of the hollow rotatable ~ ;
; 10 element.
Proceeding next to the drawings wherein like reference ~
symbols indicate the same parts throughout the various views a ~ -specific embodiment and modifLcations of the present invention ` will be described in detail.
In FIG. 1, there is illustrated a constant velocity universal joint having a hollow inter-ior 8 in which is mounted a venting valve 1 according to the present invention. The valve ' 1~ is secured on a rear wall 2 of an outer joint element 3 and disposed transversely with respect to the axis of rotation 15 of the universal joint. The valve 1 comprises a housing 17 having a connection 14 extending laterally therefrom which is in the form of a threaded soc~et and protrudes outwardly of the outer joint element 3 to be secured in position by an hexagonal nut 4.
The connection 14 comprises a venting passgag 11 thèrein ~`
.
which opens into the interior of the valve housing indicated at 10 and this interior communicates through a bore 12. Thus the ~-components 11, 10 and 12 define a valve passage through the valve housing.
:, :
:. . :, . . , . : . . .
~39615 ; Within the valve passage is formed a valve seat 7 which is engagable by a radially displaceable valve member 5 to open and close the valve passage. The spring 6 acts upon the valve member 5 to urge the valve member into the closed position against the valve seat 7. The valve member 5 thus has a reciprocating movement which is transverse of the axis of rotation 15 of the universal joint.
The valve housing 17 is mounted on the joint with respect to the axis of rotation 15 such that the major portion of the mass ~Q of the valve member 5 is on one side of the axis of rotation and ' valve seat 7 is on the other side of the axis of rotation opposed from the va~e member. When the constant velocity universal joint attains a certain rotational speed at which the centrifugal force acting upon the valve member 5 is greater than the spring force u~ging the valve member in the closed direction, the valve member 5 will be displaced radially outwardly so that the valve 1 will be -~
opened. Any over pressure within the interior 8 of the joint can then be reduced through the valve passage and vent passage 11 of ; the valve.
The housing 17 is also provided with an additional opening -9 to the valve passage 12 which opening 9 is located radially be~
tween the axis of rotation 15 and the jacket or coating of liquid formed by centrifugal force during rotation of the joint. The , opening 9 is particularly usefull in those situations when the ;l opening to the bore 12 is located within the level of liquid.
l Under these circumstances the opening 9 will permit an accelerated venting of the interior 8.
:
During venting through the bore 9 any lubricant which may ~ -6--' ,. . .
1~)39615 have reached the opening of the bore 12 and even the area of the valve seat 7 will be thrown back in a radial direction through the bore 12 into the interior of the joint as a result of centri-fugal force.
In FIG. 3 there is illustrated a venting valve 1' which has essentially the same structure as the valve 1 of FIG. 2 except that the valve 1' is located outside of the interior 8 of the outer joint element 3. The valve 1' is provided with a bore 13 which is at an a~gle to or oblique to the axis of rotation 15 and opens into the interior 8 for pu~poses of venting. The bore 13 is oblique in an outward radial direction with respect to the axis of rotation 15 but may also extend radially with respect to the axis of rotation.
The venting valve 1' of FIG. 3 functions in the same man-ner as previously described in that when a certain predetermined rotational speed is attained any liquid or lubricant within the bore 13 of the valve 1' will be thrown by centrifugal force back into the interior 8. `
With respect to the valve shown in FIG. 2, the additional opening 9 located radially between the axis of rotation of the joint and the liquid jacket formed by rotational force will pre-vent liquid particles to be carried by the air or gas entering or leaving the interior of the joint during changes in volume.
If the opening of the valve passage is located within the level .... . .
of the liquid formed by centrifugal force during rotation of the ; joint an additional opening may be provided between the valve seat -and the liquid jacket to connect the valve passage to the interior of the joint. The oblique or radial positioning of that portion . . .:
. 1039615 of the valve passage ending in the interior of the rotatable ` hollow element will provide for a rapid evacuation of the interior.
As described above, the venting valve may be located either in the interior or on the exterior surface of the hollow element.
The valve structure should be so located that any unbalances are prevented particularly when the rotatable element is rotating at particularly high speeds.
Thus it can be seen that the present inventionh s disclosed a venting valve for a rotatable hollow element wherein the valve j 10 member is movable transversely with respect to the axis of rota-tion of the hollow element and the valve seat located in the valve passage which opens into the interior of the element is disposed on one side of the axis of rotation and the major portion of the mass of the valve member is on the other side of this axis opposite from the valve seat. The valve passage has one end opening into the interior of the hollow element and the other end opening to ~-the exterior thereof. The mass of the valve member is such with respect to the force of the spring acting upon the valve member ! ` .
to urge the valve member to the closed position that when the ....
~, 20 hollow element is stationary the valve passage is closed by the :.j valve member. At a predetermined rotational speed which depends substantially on attaining a centrifugal force which will cause the liquid to form a substantiaUy cylindrical coating or jacket within the interior of the joint, the centrifugal force acting ;~;i to displace the valve member will exceed and overcome the spring ... .
force and will thus open the valve to provide open communication between the interior of the hollow rotatable element and the out-side of this element.
1039615 ~
It will be understood that this invention is susceptible to modification in order to adapt it to different usages and con-ditions, and accordingly, it is desired to comprehend such modifi-cations within this invention as may fall within the scope of appended claims.
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.
liquids of low viscosity and wherein the valve could be located below the level of the liquid existing when the rotatable member is at a standstill.
It is another object of the present invention to provide ; such a valve for venting rotatable hollow elements which would avoid losses of liquids from the element after the valve has opened.
According to one aspect of the present invention a valve for venting the interior of a rotatable hollow element which is at least partially filled with liquid may comprise a valve hous-ing having a valve passage therethrough with a valve seat in the valve passage. The valve passage has one end opening into the interior of the rotatable hollow element and the other end opens :, , to the exterior of the element. A valve member is within the valve housing and is movable transversely of the axis of rotation of the rotatable element. The valve member is engagable with the valve seat to open and close the valve passage. The one end of the passage within the hollow element is offset from the axis of rotation and the major portion of the mass of the valve member is also offset from the axis of rotation but opposed from the one end of the passage. The valve member is acted upon by spring means which urge the valve member into engagement with the valve -seat to close the valve passage when the rotatable element is stationary. The mass of the valve member is such that at a pre-determined rotary speed the centrifugal force acting upon the valve member will overcome the spring force to open the valve passage and thereby provide communication between the interior of the rotatable hollow element and the exterior thereof.
~.
- . - . . . . .
` 1~396~5 The present invention has the advantage of permitting the location of the valve opening in the region of the level of the liquid since the valve is closed when the rotatable element is at a standstill. Because of the arrangement of the valve member and the valve seat and of the valve passage which opens into the interior of the rotatable member, any liquid which flows into the ~ valve passage and also into the area of the valve seat ~hen the rotatable member is stationary, will be thrown off by centrifugal force when the element begins to rotate. The valve is opened only after a certain predetermined rotary speed is attained at which rotary speed the liquid is subjected to such a centrifugal force so as to form a liquid jacket or coating within the interior of the rotatable element. A venting valve according to the present invention is particularly advantageous with respect to rotatable elements rotating at high speeds because of over-- pressure and the risk of expansion in elastic gaskets which leads to high wear ; .
and the possibility of destruction of the gaskets and seals.
Such venting valves are particularly useful in the case of driving couplings such as in motor vehicles which may be cov-ered with a sleeve or a bellows to prevent expansion of the sleevebecause of heating of any gases present or forming in the interior of the joint. Such a valve also may prevent damage to a drive joint because of o~er pressure occurring as a result of a change in volume produced by reciprocating displacement or bending of elements of a joint coupling or a universal joint.
-Other objects and advantages of the present invention will be apparent upon reference to the accompanying description when taken in conjunction with the following drawings, which are ' ` 103961S
exemplary, wherein;
FIG. 1 is an elevational view partially in section of a universal joint provided with the venting valve according to the present invention;
FIG. 2 is a sectional view of a portion of the valve of FIG. 1 but in enlarged scale and showing the construction of the venting valve; and - FIG. 3 is a view similar to that of FIG. 2 but showing - the venting valve mounted on the exterior of the hollow rotatable ~ ;
; 10 element.
Proceeding next to the drawings wherein like reference ~
symbols indicate the same parts throughout the various views a ~ -specific embodiment and modifLcations of the present invention ` will be described in detail.
In FIG. 1, there is illustrated a constant velocity universal joint having a hollow inter-ior 8 in which is mounted a venting valve 1 according to the present invention. The valve ' 1~ is secured on a rear wall 2 of an outer joint element 3 and disposed transversely with respect to the axis of rotation 15 of the universal joint. The valve 1 comprises a housing 17 having a connection 14 extending laterally therefrom which is in the form of a threaded soc~et and protrudes outwardly of the outer joint element 3 to be secured in position by an hexagonal nut 4.
The connection 14 comprises a venting passgag 11 thèrein ~`
.
which opens into the interior of the valve housing indicated at 10 and this interior communicates through a bore 12. Thus the ~-components 11, 10 and 12 define a valve passage through the valve housing.
:, :
:. . :, . . , . : . . .
~39615 ; Within the valve passage is formed a valve seat 7 which is engagable by a radially displaceable valve member 5 to open and close the valve passage. The spring 6 acts upon the valve member 5 to urge the valve member into the closed position against the valve seat 7. The valve member 5 thus has a reciprocating movement which is transverse of the axis of rotation 15 of the universal joint.
The valve housing 17 is mounted on the joint with respect to the axis of rotation 15 such that the major portion of the mass ~Q of the valve member 5 is on one side of the axis of rotation and ' valve seat 7 is on the other side of the axis of rotation opposed from the va~e member. When the constant velocity universal joint attains a certain rotational speed at which the centrifugal force acting upon the valve member 5 is greater than the spring force u~ging the valve member in the closed direction, the valve member 5 will be displaced radially outwardly so that the valve 1 will be -~
opened. Any over pressure within the interior 8 of the joint can then be reduced through the valve passage and vent passage 11 of ; the valve.
The housing 17 is also provided with an additional opening -9 to the valve passage 12 which opening 9 is located radially be~
tween the axis of rotation 15 and the jacket or coating of liquid formed by centrifugal force during rotation of the joint. The , opening 9 is particularly usefull in those situations when the ;l opening to the bore 12 is located within the level of liquid.
l Under these circumstances the opening 9 will permit an accelerated venting of the interior 8.
:
During venting through the bore 9 any lubricant which may ~ -6--' ,. . .
1~)39615 have reached the opening of the bore 12 and even the area of the valve seat 7 will be thrown back in a radial direction through the bore 12 into the interior of the joint as a result of centri-fugal force.
In FIG. 3 there is illustrated a venting valve 1' which has essentially the same structure as the valve 1 of FIG. 2 except that the valve 1' is located outside of the interior 8 of the outer joint element 3. The valve 1' is provided with a bore 13 which is at an a~gle to or oblique to the axis of rotation 15 and opens into the interior 8 for pu~poses of venting. The bore 13 is oblique in an outward radial direction with respect to the axis of rotation 15 but may also extend radially with respect to the axis of rotation.
The venting valve 1' of FIG. 3 functions in the same man-ner as previously described in that when a certain predetermined rotational speed is attained any liquid or lubricant within the bore 13 of the valve 1' will be thrown by centrifugal force back into the interior 8. `
With respect to the valve shown in FIG. 2, the additional opening 9 located radially between the axis of rotation of the joint and the liquid jacket formed by rotational force will pre-vent liquid particles to be carried by the air or gas entering or leaving the interior of the joint during changes in volume.
If the opening of the valve passage is located within the level .... . .
of the liquid formed by centrifugal force during rotation of the ; joint an additional opening may be provided between the valve seat -and the liquid jacket to connect the valve passage to the interior of the joint. The oblique or radial positioning of that portion . . .:
. 1039615 of the valve passage ending in the interior of the rotatable ` hollow element will provide for a rapid evacuation of the interior.
As described above, the venting valve may be located either in the interior or on the exterior surface of the hollow element.
The valve structure should be so located that any unbalances are prevented particularly when the rotatable element is rotating at particularly high speeds.
Thus it can be seen that the present inventionh s disclosed a venting valve for a rotatable hollow element wherein the valve j 10 member is movable transversely with respect to the axis of rota-tion of the hollow element and the valve seat located in the valve passage which opens into the interior of the element is disposed on one side of the axis of rotation and the major portion of the mass of the valve member is on the other side of this axis opposite from the valve seat. The valve passage has one end opening into the interior of the hollow element and the other end opening to ~-the exterior thereof. The mass of the valve member is such with respect to the force of the spring acting upon the valve member ! ` .
to urge the valve member to the closed position that when the ....
~, 20 hollow element is stationary the valve passage is closed by the :.j valve member. At a predetermined rotational speed which depends substantially on attaining a centrifugal force which will cause the liquid to form a substantiaUy cylindrical coating or jacket within the interior of the joint, the centrifugal force acting ;~;i to displace the valve member will exceed and overcome the spring ... .
force and will thus open the valve to provide open communication between the interior of the hollow rotatable element and the out-side of this element.
1039615 ~
It will be understood that this invention is susceptible to modification in order to adapt it to different usages and con-ditions, and accordingly, it is desired to comprehend such modifi-cations within this invention as may fall within the scope of appended claims.
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Claims (7)
1. A valve for venting the interior of a rotatable hollow element which is at least partially filled with liquid comprising a valve housing having a valve passage therethrough having one end opening to the interior of a hollow rotatable element and the-other end of said passage opening exteriorly to such an element, there being a valve seat in said valve passage, a valve member within said valve housing movable transversely of the axis of ro-tation of the rotatable element and engageable with said valve seat to open and close said valve passage, said passage one end being offset from the axis of rotation and the major portion of the mass of said valve member being offset from the axis opposed from said passage one end, spring means acting against said valve member for urging said valve member into engagement with said valve seat to close said valve passage when the rotatable member is stationary, the mass of said valve member being such that at a predetermined rotary speed the centrifugal force acting upon said valve member will overcome the spring force to open said valve passage and thereby provide communication between the in-terior of said rotatable hollow element and the exterior thereof to vent the interior while the liquid is maintained within the interior by the centrifugal force.
2. A valve as claimed in claim 1 wherein there is a second passage in said valve housing communicating between said valve passage and an opening disposed radially between the axis of rotation and the liquid when acted upon by centrifugal force.
3. A valve as claimed in claim 1 wherein a portion of said valve passage within said valve housing leading to said one end is disposed obliquely from the axis of rotation.
4. A valve as claimed in claim 1 wherein a portion of said valve passage within said valve housing leading to said one end extends radially to the axis of rotation.
5. A valve as claimed in claim 1 wherein said one end of said valve passage opens within the level of liquid formed by centrifugal force during rotation of the hollow element, there being a second opening in said valve member between said valve seat and the level of liquid when acted upon by centrifugal force communicating with the portion of said valve passage leading to said one end thereof.
6. A valve as claimed in claim 1 wherein said other end of said valve passage is disposed on the axis of rotation of the rotatable hollow member.
7. A valve as claimed in claim 1 wherein said valve is mounted on one of the interior and the exterior of the rotatable hollow element.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2450238A DE2450238C2 (en) | 1974-10-23 | 1974-10-23 | Valve for venting the cavity of a rotating joint that is partially filled with lubricant or of shaft parts that can be telescoped into one another |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1039615A true CA1039615A (en) | 1978-10-03 |
Family
ID=5928887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA238,205A Expired CA1039615A (en) | 1974-10-23 | 1975-10-23 | Valve for venting the interior of a rotatable hollow element |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5917288B2 (en) |
| BR (1) | BR7506886A (en) |
| CA (1) | CA1039615A (en) |
| DE (1) | DE2450238C2 (en) |
| FR (1) | FR2288924A1 (en) |
| GB (1) | GB1475246A (en) |
| IT (1) | IT1056273B (en) |
| SE (1) | SE428053B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3047719C2 (en) * | 1980-12-18 | 1983-10-27 | MTU Motoren- und Turbinen-Union München GmbH, 8000 München | Device for venting a liquid container, in particular a lubricant container for aircraft in extreme flight positions and conditions |
| DE3508435A1 (en) * | 1985-03-09 | 1986-09-11 | Hans Heynau GmbH, 8000 München | Dynamic vent valve |
| DE19712158C2 (en) * | 1997-03-22 | 2000-06-08 | Walterscheid Gmbh Gkn | Lubrication device for lubricating the profile tubes of a telescopic shaft |
| GB2369864B (en) | 2000-12-05 | 2004-11-03 | Draftex Ind Ltd | Protective covers |
| TR201806667T1 (en) * | 2015-11-11 | 2018-06-21 | Dana Automotive Systems Group | Air evacuation system for fixed speed joints. |
| CN111550501B (en) * | 2020-04-03 | 2022-04-08 | 宁波吉利汽车研究开发有限公司 | Oil leakage-proof universal joint of transmission shaft |
| CN118564704B (en) * | 2024-08-01 | 2024-10-22 | 瑞安市都邦汽车配件有限公司 | Waterproof breather valve for vehicle |
-
1974
- 1974-10-23 DE DE2450238A patent/DE2450238C2/en not_active Expired
-
1975
- 1975-10-21 BR BR7506886*A patent/BR7506886A/en unknown
- 1975-10-22 SE SE7511840A patent/SE428053B/en unknown
- 1975-10-22 FR FR7532294A patent/FR2288924A1/en active Granted
- 1975-10-23 CA CA238,205A patent/CA1039615A/en not_active Expired
- 1975-10-23 JP JP50127842A patent/JPS5917288B2/en not_active Expired
- 1975-10-23 GB GB4348875A patent/GB1475246A/en not_active Expired
- 1975-10-23 IT IT05222/75A patent/IT1056273B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| FR2288924B1 (en) | 1980-09-26 |
| FR2288924A1 (en) | 1976-05-21 |
| DE2450238C2 (en) | 1979-12-06 |
| IT1056273B (en) | 1982-01-30 |
| SE428053B (en) | 1983-05-30 |
| JPS5917288B2 (en) | 1984-04-20 |
| SE7511840L (en) | 1976-04-26 |
| BR7506886A (en) | 1976-08-17 |
| DE2450238B1 (en) | 1975-10-09 |
| JPS5165253A (en) | 1976-06-05 |
| GB1475246A (en) | 1977-06-01 |
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