CA2512258A1 - Direct drive linear transfer device - Google Patents
Direct drive linear transfer device Download PDFInfo
- Publication number
- CA2512258A1 CA2512258A1 CA 2512258 CA2512258A CA2512258A1 CA 2512258 A1 CA2512258 A1 CA 2512258A1 CA 2512258 CA2512258 CA 2512258 CA 2512258 A CA2512258 A CA 2512258A CA 2512258 A1 CA2512258 A1 CA 2512258A1
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- CA
- Canada
- Prior art keywords
- threaded rod
- axle
- transfer device
- tapped
- linear transfer
- 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.)
- Abandoned
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Classifications
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- 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
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Transmission Devices (AREA)
Abstract
A linear transfer device for converting rotational motion of an electric motor into linear to-and-fro motion along a threaded rod. Said device comprises and electric motor, said motor comprising an axle, said axle comprising a hollow core, said hollow core being at least partly tapped such that a threaded rod, of matching thread, penetrates the axle core and extends beyond the axle in both directions. Said threaded rod engages said tap of said tapped axle in a screw-and-nut method. Said electric motor is fixedly secured.
Said threaded rod is restricted from rotating but is allowed to travel in a linear path through the tapped axle core. When said motor is energized, said tapped axle rotates causing said threaded rod to travel though said tapped axle in a linear path. For a curved threaded rod, clearance openings will precede and succeed the tap of said axle core to prevent jamming.
Said threaded rod is restricted from rotating but is allowed to travel in a linear path through the tapped axle core. When said motor is energized, said tapped axle rotates causing said threaded rod to travel though said tapped axle in a linear path. For a curved threaded rod, clearance openings will precede and succeed the tap of said axle core to prevent jamming.
Description
FIELD OF THE INVENTION
The invention relates to a device for converting rotational motion of an electric motor into linear motion along a path. Said device relates to a nut and screw method of operation, the nut being a threaded rod (or a lead screw) and the nut being a hollow tapped axle of an electric motor. Energization of the electric motor causes rotation of the tapped axle to generate movement of said threaded rod through said tapped axle.
BACKGROUND OF THE INVENTION
The invention pertains generally to linear transfer devices. More specifically the invention relates to a device for converting rotational motion generated by an electric motor about its inner axle into linear motion along a threaded rod.
The device comprises and electric motor, said motor comprising an axle, said axle comprising a hollow core, said hollow core being at least partly tapped such that a threaded rod, of matching thread, penetrates the axle core and extends beyond the axle in both directions.
For applications where said threaded rod is curved, the tapped axle core includes a clearance hole at either or both ends of said tapped axle such that said threaded rod will extend the full length of said tapped axle, and engage the tap of said axle, without said threaded rod jamming into said axle core walls.
Said electric motor is generally mounted into a fixed position (in some applications said motor is allowed to tilt). Said threaded rod is secured at one or both ends to a connector or the object to be transferred. Said threaded rod is restricted from rotating about its own axis but said threaded rod is allowed to move in a linear path through said tapped axle of said motor. The primary advantage of said device is in the direct drive mechanism which is the axle acting directly on the threaded rod, said tap and thread acting as a direct gear.
Conventional devices rely on a motor axle acting on a worm-gear to generate rotational motion of a reduction gear which then acts on an external member such as a sector, a sprocket, a Bowden cable system or other to generate motion in a linear path.
The invention possesses numerous advantages over know linear transfer devices.
The invention is a direct drive device where the rotating motor axle acts directly on the threaded rod without relying on a reduction gear or worm gear. Current invention requires fewer parts, fewer assemblies, lower tooling cost, lower manufacturing costs, lower product weight, lower product packaging constraints, accelerated design time, and lower product cost.
DESCRIPTION OF PRIOR ART
It is known in the prior act to provide a linear transfer device comprising a threaded rod and engaging said threaded rod indirectly with an electric motor to generate window movement along the threaded rod.
US patent number 5,012,613 to Shuji Sekine on May 7, 1991, uses a permanently fixed electric motor and a vertically secured threaded rod, including a rail system and a method of linking the motor to act on the driving nut along the lead screw.
US Patent Number 3,014,715 to Jack E. Martens on December 26, 1961, uses an electric motor in a fixed horizontal position to rotate a vertically mounted straight threaded rod, said rotation of the rod causes a screw and window to ascend and descend the height of the threaded rod.
US Patent Number 2,649,300 to James M. Launder on August 18, 1953, uses an electric motor and a sleeve comprising a screw, and said motor is coupled to said sleeve by a reduction gear and both motor and sleeve (and window) travel along a curved threaded rod in both directions.
US patent Number 2,311,972 to Emory Glenn Simpson on February 23, 1943, uses an electric motor, a gearing mechanism external to the threaded rod, a screw-type member acted on by the gearing mechanism, and a jack-screw mechanism for lifting and lowering the vehicle window.
SUMMARY OF THE INVENTION
The invention pertains to a linear transfer device including a threaded rod and an electric motor comprising a rotating axle, said axle comprising a hollow core, said hollow core being at least partly tapped such that the threaded rod penetrates the full length of the inside of the tapped axle and the thread of the threaded rod engages the tap of the tapped axle, and said rod extends beyond both ends of the tapped axle core.
Said tapped axle motor is fixedly secured into position (allowed to pivot in some applications).
Method of engagement between the threaded rod and the tapped axle of the electric motor is similar to that of a nut and screw, the nut being the tapped axle and the screw being the threaded rod.
The threaded rod extends through a straight path, or a radius of curvature, or both. The object to be moved is mounted either directly to one or both, ends of the threaded rod, or by a connecting member secured to either or both ends of said threaded rod.
Said tapped axle includes a clearance hole at either or both ends of said tapped core for allowing a curved threaded rod to penetrate said axle core and engage the tap of said axle core without said curved threaded rod jamming into the core walls of said axle core.
As the electric motor is energized, the tapped axle spins and the tap of said tapped axle engages the thread of said threaded rod causing linear movement of said threaded through the tapped axle. Direction of rotation of the tapped axle will determine the direction of travel of said threaded rod.
DESCRIPTIONS OF THE DRAWINGS
Fig-1 illustrates the general layout of a conventional electric motor, a brush-type motor is depicted;
Fig-2 illustrates the electric motor with a hollow tapped axle-core and a threaded rod extending through said tapped axle;
Fig-3 illustrates the cross section of the tapped-axle motor of Fig-2 along cross section A-A;
Fig-4 illustrates a cross section of a tapped-axle motor depicting a hollow core, clearance holes and a curved threaded rod;
Fig-5 illustrates the cross section of a tapped axle for use with a curved threaded rod;
Fig-6 is a cross section of a strongly curved threaded rod engaging the tapped axle motor;
Fig-7 is a cross section of a straight threaded rod engaging the tapped axle motor;
Fig-8 illustrates cross sections of threaded rods;
Fig-9 illustrates different designs of threaded rods;
Fig-10 illustrates a pivot-mount allowing said tapped motor to tilt;
Fig-11 illustrates said linear transfer device tilting in pivot-mount;
Fig-12 illustrates said linear transfer device used as a window regulator in a child-proof back door of a vehicle (Window is up);
Fig-13 illustrates said linear transfer device used as a window regulator in a child-proof back door of a vehicle. (Window is down);
Fig-14 illustrates said linear transfer device used as a power antenna in a vehicle;
Fig-15 illustrates said linear transfer device used as a neck-rest adjustment in a vehicle seat (Neck-rest is down);
Fig-16 illustrates said linear transfer device used as a neck-rest adjustment in a vehicle seat (Neck-rest is up);
Fig-17 illustrates said linear transfer device used as a vehicle pop-up headlight adjuster (Headlight is up);
Fig-18 illustrates said linear transfer device used as a vehicle pop-up headlight adjuster (Headlight is down);
Fig-19 illustrates said linear transfer device used as a headlight adjustment device (Headlights pointing right);
Fig-20 illustrates said linear transfer device used as a headlight adjustment device (Headlights pointing left);
Fig-21 illustrates said linear transfer device used as a windshield wiper unit (Wipers are down);
Fig-22 illustrates said linear transfer device used as a windshield wiper unit (Wipers are extended);
Fig-23 illustrates said linear transfer device used as a power steering device and a power-shock-absorber device.
Fig-24 illustrates said linear transfer device using a guiding rail to guide said threaded rod along the path of travel;
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Fig-1 illustrates a conventional (brush-type) electric motor 1, including a rotating inner axle 2, a stator 3, wiring 4, armature 5, permanent magnet 6 and motor housing 7.
Fig-2 illustrates the general design of the tapped axle motor 8. Said tapped axle motor 8 comprises tapped axle 10. Said tapped axle 10 comprises a hollow axle core 12 extending the full length of the motor axle 2. Said hollow axle core 12 comprises a tap 11 and said tap 11 extends at least partly along the length of the tapped axle 10. A
threaded rod 9 enters said tapped axle 10 at one end, said threaded rod 9 extends the full length of the tapped axle 10 and said threaded rod 9 exits and extends beyond the other end of the tapped axle 10. Said threaded rod 9 engages the tap 11 of the tapped axle 10 in a screw-and-nut method, the threaded rod 9 acting as the screw and the tapped axle 10 acting as the nut.
Fig-3 illustrates the cross section of Fig-2 along line AA of the tapped axle motor 8, including the tap 11 of the hollow axle core 12, through which the threaded rod 9 passes.
Radially disposed bushings 13 at each end of the tapped axle 10 are positioned between said tapped axle 10 and the motor housing 7. Said threaded rod 9 comprises an end-member 14 at one or both ends of said threaded rod 9, and said end-member 14 prevents rotation of the threaded rod 9 while allowing linear movement of said threaded rod 9 through the tapped axle 10 in both directions.
Fig-4 is a cross section of said tapped axle motor 8 for use with a curved threaded rod 19.
The tapped axle 10 comprises a tap diameter 15, a tap length 16 along which said curved threaded rod 19 engages said tapped axle 10, and clearance openings of clearance length 17 and clearance diameter 18 exist at each end of the tapped axle 10. Said clearance holes ensure that the curved threaded rod 19 engages the tap 11 of the tapped axle 10 without said curved threaded rod 19 jamming into the axle-core walls 12.
Fig-5 further illustrates a curved threaded rod 19 engaging a tapped axle motor 8, including the tapped axle's axis of rotation 23 and the curved threaded rod's curvature 24.
Note the deviation from a straight path 25 between the tapped axle's axis of rotation 23 and the curved threaded rod's curvature 24. Included in the drawing is the end-wall 20 of the tapped-axle motor 8 and the can-member 22. A mounting member 21 secures the tapped-axle motor 8 into a fixed position and prevents said tapped-axle motor 8 from rotating during motor operation. Clearance holes of Fig-4 are intended to compensate for said deviation 25 and prevent the curved threaded rod 19 from jamming into the axle-core walls 12.
The operation of said device is as follows (refer to Fig-5 ): Said tapped-axle motor 8 is secured into place by mounting member 21. During tapped-axle motor 8 operation the tapped axle 10 rotates. The threaded rod (straight or curved rod) 9 or 19 is prevented from rotating by connecting member 14, however said threaded 9 or 19 rod is allowed to move in a linear path through the tapped-axle 10. During motor operation said threaded rod 9 or 19, and said connecting member 14, travel through said tapped-axle motor 8 in a to-and-fro motion depending on the direction of spin of said tapped-axle 10.
Fig-6 illustrates the cross section of a tapped-axle motor 8 engaged by a curved threaded rod 19. Said curved threaded rod 19 is fitted at one or both ends with a connecting member 14.
Fig-7 illustrates the cross section of a tapped-axle motor 8 engaged by a straight threaded rod 9. Said straight threaded rod 9 is fitted at one or both ends with a connecting member 14.
Fig-8 illustrates the cross sections of: a round threaded rod with a solid core 9, a round threaded rod with one flat side 25, a round threaded rod with two flat sides 26, and a round threaded rod with a hollow core 27. Said rod cross-sections of threaded rods will vary with application.
Fig-9 illustrates variations in threaded rod design including a curved threaded rod 19, a straight threaded rod 9, a partly threaded rod 28, and a rod threaded at the center 29.
The tapped-axle motor may be secured into position using a pivot joint 30 as in Fig-10.
Said pivot-joint 30 is secured to the tapped-axle motor 8 as in Fig-10.
Figures 12 to 22 illustrate various automotive applications of said linear transfer device.
Figures 12 and 13 illustrate a back door vehicle window regulator including a vehicle window 32, a threaded rod 9, a connector 14 connecting said window 32 to said threaded rod 9, and said tapped-axle motor 8. The tapped axle motor 8 is positioned in the general center of the vehicle door 31. The travel in the back window is generally restricted to half way, thus the threaded rod 9 must be long enough for sufficient travel but short enough not to bottom-out in the vehicle door 31.
Fig-14 illustrates a power antenna 33 using said linear transfer device. Said tapped axle motor 8 drives a threaded rod 9 in an upward and downward direction thus raising and lowering the antenna 33. The threaded rod 9 is flexible (plastic) and is connected at one end to the antenna 33. During motor operation the threaded rod 9 winds and unwinds in the spiral drum 34.
Fig-15 and 16 illustrate a power head-rest 35 using said linear transfer device. A
connector 14 is attached to the end of the threaded rod 9 and said connector 14 extends through a guide 36. As the tapped-axle motor is energized, the threaded rod 9 moves up and down adjusting said neck-rest position. Fig-15 illustrates the neck-rest in the down position and Fig-16 illustrates the neck-rest in the up position.
Fig-17 and 18 illustrate vehicle pop-up headlights 37 using said linear transfer device. Fig-17 illustrates a tapped-axle motor 8 engaged by a curved threaded rod 19 to move a vehicle pop-up headlight 37 between an UP position to a DOWN position (Fig-18).
Fig-19 and Fig-20 illustrate a headlight rotating device using said linear transfer device.
Said tapped-axle motor 8 is engaged by a rod threaded at the center 29 and said rod is connected at each end to a pivoting headlight unit 39. Movement of the rod 29 causes rotation of the pivoting headlight unit 39 and thus shifting the direction of the light beam 40.
Fig-21 and Fig-22 illustrate vehicle windshield wiping unit using said linear transfer device.
Said tapped-axle motor 8 is engaged by a rod threaded at the center 29 and said rod is connected at each end to a connector 14 engaged around a pivoting point 42.
Movement of the rod 29 causes rotation about the pivoting point 42 thus moving the wipers 41 as in Fig-22.
Fig-23 illustrates the use of said linear transfer device as an electric-power steering unit and a shock-absorption system. Said power steering unit uses a tapped axle motor 8A, said motor engaged by a rod threaded at the center 29, said rod 29 connected at each end to a steering rod 44. Said power shock absorption unit is connected to a shock absorber 43. The tapped axle motor 8B activates to engage the shock member 43 to raise or lower the pressure in said shock absorber 43 to cushion disturbances in the road.
Fig-24 illustrates said linear transfer device comprising a guiding rail for applications requiring sturdy guiding. A guiding member such as a rail 45 (or rod or other) extends along the path of travel of said threaded rod 9 at least in one direction relative to the exit path from said tapped axle of said tapped axle motor 8. Said rail 45 is fixedly secured into position (by securing member 47). A sliding member 46 is attached to at least one end of said threaded rod 9 and said sliding unit 46 is slidingly engaged with said guiding rail 45.
Said sliding member 46 is pushed/pulled along said rail 45 by said threaded rod 8. The object to be transferred 48 is attached to said sliding member 46.
The invention relates to a device for converting rotational motion of an electric motor into linear motion along a path. Said device relates to a nut and screw method of operation, the nut being a threaded rod (or a lead screw) and the nut being a hollow tapped axle of an electric motor. Energization of the electric motor causes rotation of the tapped axle to generate movement of said threaded rod through said tapped axle.
BACKGROUND OF THE INVENTION
The invention pertains generally to linear transfer devices. More specifically the invention relates to a device for converting rotational motion generated by an electric motor about its inner axle into linear motion along a threaded rod.
The device comprises and electric motor, said motor comprising an axle, said axle comprising a hollow core, said hollow core being at least partly tapped such that a threaded rod, of matching thread, penetrates the axle core and extends beyond the axle in both directions.
For applications where said threaded rod is curved, the tapped axle core includes a clearance hole at either or both ends of said tapped axle such that said threaded rod will extend the full length of said tapped axle, and engage the tap of said axle, without said threaded rod jamming into said axle core walls.
Said electric motor is generally mounted into a fixed position (in some applications said motor is allowed to tilt). Said threaded rod is secured at one or both ends to a connector or the object to be transferred. Said threaded rod is restricted from rotating about its own axis but said threaded rod is allowed to move in a linear path through said tapped axle of said motor. The primary advantage of said device is in the direct drive mechanism which is the axle acting directly on the threaded rod, said tap and thread acting as a direct gear.
Conventional devices rely on a motor axle acting on a worm-gear to generate rotational motion of a reduction gear which then acts on an external member such as a sector, a sprocket, a Bowden cable system or other to generate motion in a linear path.
The invention possesses numerous advantages over know linear transfer devices.
The invention is a direct drive device where the rotating motor axle acts directly on the threaded rod without relying on a reduction gear or worm gear. Current invention requires fewer parts, fewer assemblies, lower tooling cost, lower manufacturing costs, lower product weight, lower product packaging constraints, accelerated design time, and lower product cost.
DESCRIPTION OF PRIOR ART
It is known in the prior act to provide a linear transfer device comprising a threaded rod and engaging said threaded rod indirectly with an electric motor to generate window movement along the threaded rod.
US patent number 5,012,613 to Shuji Sekine on May 7, 1991, uses a permanently fixed electric motor and a vertically secured threaded rod, including a rail system and a method of linking the motor to act on the driving nut along the lead screw.
US Patent Number 3,014,715 to Jack E. Martens on December 26, 1961, uses an electric motor in a fixed horizontal position to rotate a vertically mounted straight threaded rod, said rotation of the rod causes a screw and window to ascend and descend the height of the threaded rod.
US Patent Number 2,649,300 to James M. Launder on August 18, 1953, uses an electric motor and a sleeve comprising a screw, and said motor is coupled to said sleeve by a reduction gear and both motor and sleeve (and window) travel along a curved threaded rod in both directions.
US patent Number 2,311,972 to Emory Glenn Simpson on February 23, 1943, uses an electric motor, a gearing mechanism external to the threaded rod, a screw-type member acted on by the gearing mechanism, and a jack-screw mechanism for lifting and lowering the vehicle window.
SUMMARY OF THE INVENTION
The invention pertains to a linear transfer device including a threaded rod and an electric motor comprising a rotating axle, said axle comprising a hollow core, said hollow core being at least partly tapped such that the threaded rod penetrates the full length of the inside of the tapped axle and the thread of the threaded rod engages the tap of the tapped axle, and said rod extends beyond both ends of the tapped axle core.
Said tapped axle motor is fixedly secured into position (allowed to pivot in some applications).
Method of engagement between the threaded rod and the tapped axle of the electric motor is similar to that of a nut and screw, the nut being the tapped axle and the screw being the threaded rod.
The threaded rod extends through a straight path, or a radius of curvature, or both. The object to be moved is mounted either directly to one or both, ends of the threaded rod, or by a connecting member secured to either or both ends of said threaded rod.
Said tapped axle includes a clearance hole at either or both ends of said tapped core for allowing a curved threaded rod to penetrate said axle core and engage the tap of said axle core without said curved threaded rod jamming into the core walls of said axle core.
As the electric motor is energized, the tapped axle spins and the tap of said tapped axle engages the thread of said threaded rod causing linear movement of said threaded through the tapped axle. Direction of rotation of the tapped axle will determine the direction of travel of said threaded rod.
DESCRIPTIONS OF THE DRAWINGS
Fig-1 illustrates the general layout of a conventional electric motor, a brush-type motor is depicted;
Fig-2 illustrates the electric motor with a hollow tapped axle-core and a threaded rod extending through said tapped axle;
Fig-3 illustrates the cross section of the tapped-axle motor of Fig-2 along cross section A-A;
Fig-4 illustrates a cross section of a tapped-axle motor depicting a hollow core, clearance holes and a curved threaded rod;
Fig-5 illustrates the cross section of a tapped axle for use with a curved threaded rod;
Fig-6 is a cross section of a strongly curved threaded rod engaging the tapped axle motor;
Fig-7 is a cross section of a straight threaded rod engaging the tapped axle motor;
Fig-8 illustrates cross sections of threaded rods;
Fig-9 illustrates different designs of threaded rods;
Fig-10 illustrates a pivot-mount allowing said tapped motor to tilt;
Fig-11 illustrates said linear transfer device tilting in pivot-mount;
Fig-12 illustrates said linear transfer device used as a window regulator in a child-proof back door of a vehicle (Window is up);
Fig-13 illustrates said linear transfer device used as a window regulator in a child-proof back door of a vehicle. (Window is down);
Fig-14 illustrates said linear transfer device used as a power antenna in a vehicle;
Fig-15 illustrates said linear transfer device used as a neck-rest adjustment in a vehicle seat (Neck-rest is down);
Fig-16 illustrates said linear transfer device used as a neck-rest adjustment in a vehicle seat (Neck-rest is up);
Fig-17 illustrates said linear transfer device used as a vehicle pop-up headlight adjuster (Headlight is up);
Fig-18 illustrates said linear transfer device used as a vehicle pop-up headlight adjuster (Headlight is down);
Fig-19 illustrates said linear transfer device used as a headlight adjustment device (Headlights pointing right);
Fig-20 illustrates said linear transfer device used as a headlight adjustment device (Headlights pointing left);
Fig-21 illustrates said linear transfer device used as a windshield wiper unit (Wipers are down);
Fig-22 illustrates said linear transfer device used as a windshield wiper unit (Wipers are extended);
Fig-23 illustrates said linear transfer device used as a power steering device and a power-shock-absorber device.
Fig-24 illustrates said linear transfer device using a guiding rail to guide said threaded rod along the path of travel;
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Fig-1 illustrates a conventional (brush-type) electric motor 1, including a rotating inner axle 2, a stator 3, wiring 4, armature 5, permanent magnet 6 and motor housing 7.
Fig-2 illustrates the general design of the tapped axle motor 8. Said tapped axle motor 8 comprises tapped axle 10. Said tapped axle 10 comprises a hollow axle core 12 extending the full length of the motor axle 2. Said hollow axle core 12 comprises a tap 11 and said tap 11 extends at least partly along the length of the tapped axle 10. A
threaded rod 9 enters said tapped axle 10 at one end, said threaded rod 9 extends the full length of the tapped axle 10 and said threaded rod 9 exits and extends beyond the other end of the tapped axle 10. Said threaded rod 9 engages the tap 11 of the tapped axle 10 in a screw-and-nut method, the threaded rod 9 acting as the screw and the tapped axle 10 acting as the nut.
Fig-3 illustrates the cross section of Fig-2 along line AA of the tapped axle motor 8, including the tap 11 of the hollow axle core 12, through which the threaded rod 9 passes.
Radially disposed bushings 13 at each end of the tapped axle 10 are positioned between said tapped axle 10 and the motor housing 7. Said threaded rod 9 comprises an end-member 14 at one or both ends of said threaded rod 9, and said end-member 14 prevents rotation of the threaded rod 9 while allowing linear movement of said threaded rod 9 through the tapped axle 10 in both directions.
Fig-4 is a cross section of said tapped axle motor 8 for use with a curved threaded rod 19.
The tapped axle 10 comprises a tap diameter 15, a tap length 16 along which said curved threaded rod 19 engages said tapped axle 10, and clearance openings of clearance length 17 and clearance diameter 18 exist at each end of the tapped axle 10. Said clearance holes ensure that the curved threaded rod 19 engages the tap 11 of the tapped axle 10 without said curved threaded rod 19 jamming into the axle-core walls 12.
Fig-5 further illustrates a curved threaded rod 19 engaging a tapped axle motor 8, including the tapped axle's axis of rotation 23 and the curved threaded rod's curvature 24.
Note the deviation from a straight path 25 between the tapped axle's axis of rotation 23 and the curved threaded rod's curvature 24. Included in the drawing is the end-wall 20 of the tapped-axle motor 8 and the can-member 22. A mounting member 21 secures the tapped-axle motor 8 into a fixed position and prevents said tapped-axle motor 8 from rotating during motor operation. Clearance holes of Fig-4 are intended to compensate for said deviation 25 and prevent the curved threaded rod 19 from jamming into the axle-core walls 12.
The operation of said device is as follows (refer to Fig-5 ): Said tapped-axle motor 8 is secured into place by mounting member 21. During tapped-axle motor 8 operation the tapped axle 10 rotates. The threaded rod (straight or curved rod) 9 or 19 is prevented from rotating by connecting member 14, however said threaded 9 or 19 rod is allowed to move in a linear path through the tapped-axle 10. During motor operation said threaded rod 9 or 19, and said connecting member 14, travel through said tapped-axle motor 8 in a to-and-fro motion depending on the direction of spin of said tapped-axle 10.
Fig-6 illustrates the cross section of a tapped-axle motor 8 engaged by a curved threaded rod 19. Said curved threaded rod 19 is fitted at one or both ends with a connecting member 14.
Fig-7 illustrates the cross section of a tapped-axle motor 8 engaged by a straight threaded rod 9. Said straight threaded rod 9 is fitted at one or both ends with a connecting member 14.
Fig-8 illustrates the cross sections of: a round threaded rod with a solid core 9, a round threaded rod with one flat side 25, a round threaded rod with two flat sides 26, and a round threaded rod with a hollow core 27. Said rod cross-sections of threaded rods will vary with application.
Fig-9 illustrates variations in threaded rod design including a curved threaded rod 19, a straight threaded rod 9, a partly threaded rod 28, and a rod threaded at the center 29.
The tapped-axle motor may be secured into position using a pivot joint 30 as in Fig-10.
Said pivot-joint 30 is secured to the tapped-axle motor 8 as in Fig-10.
Figures 12 to 22 illustrate various automotive applications of said linear transfer device.
Figures 12 and 13 illustrate a back door vehicle window regulator including a vehicle window 32, a threaded rod 9, a connector 14 connecting said window 32 to said threaded rod 9, and said tapped-axle motor 8. The tapped axle motor 8 is positioned in the general center of the vehicle door 31. The travel in the back window is generally restricted to half way, thus the threaded rod 9 must be long enough for sufficient travel but short enough not to bottom-out in the vehicle door 31.
Fig-14 illustrates a power antenna 33 using said linear transfer device. Said tapped axle motor 8 drives a threaded rod 9 in an upward and downward direction thus raising and lowering the antenna 33. The threaded rod 9 is flexible (plastic) and is connected at one end to the antenna 33. During motor operation the threaded rod 9 winds and unwinds in the spiral drum 34.
Fig-15 and 16 illustrate a power head-rest 35 using said linear transfer device. A
connector 14 is attached to the end of the threaded rod 9 and said connector 14 extends through a guide 36. As the tapped-axle motor is energized, the threaded rod 9 moves up and down adjusting said neck-rest position. Fig-15 illustrates the neck-rest in the down position and Fig-16 illustrates the neck-rest in the up position.
Fig-17 and 18 illustrate vehicle pop-up headlights 37 using said linear transfer device. Fig-17 illustrates a tapped-axle motor 8 engaged by a curved threaded rod 19 to move a vehicle pop-up headlight 37 between an UP position to a DOWN position (Fig-18).
Fig-19 and Fig-20 illustrate a headlight rotating device using said linear transfer device.
Said tapped-axle motor 8 is engaged by a rod threaded at the center 29 and said rod is connected at each end to a pivoting headlight unit 39. Movement of the rod 29 causes rotation of the pivoting headlight unit 39 and thus shifting the direction of the light beam 40.
Fig-21 and Fig-22 illustrate vehicle windshield wiping unit using said linear transfer device.
Said tapped-axle motor 8 is engaged by a rod threaded at the center 29 and said rod is connected at each end to a connector 14 engaged around a pivoting point 42.
Movement of the rod 29 causes rotation about the pivoting point 42 thus moving the wipers 41 as in Fig-22.
Fig-23 illustrates the use of said linear transfer device as an electric-power steering unit and a shock-absorption system. Said power steering unit uses a tapped axle motor 8A, said motor engaged by a rod threaded at the center 29, said rod 29 connected at each end to a steering rod 44. Said power shock absorption unit is connected to a shock absorber 43. The tapped axle motor 8B activates to engage the shock member 43 to raise or lower the pressure in said shock absorber 43 to cushion disturbances in the road.
Fig-24 illustrates said linear transfer device comprising a guiding rail for applications requiring sturdy guiding. A guiding member such as a rail 45 (or rod or other) extends along the path of travel of said threaded rod 9 at least in one direction relative to the exit path from said tapped axle of said tapped axle motor 8. Said rail 45 is fixedly secured into position (by securing member 47). A sliding member 46 is attached to at least one end of said threaded rod 9 and said sliding unit 46 is slidingly engaged with said guiding rail 45.
Said sliding member 46 is pushed/pulled along said rail 45 by said threaded rod 8. The object to be transferred 48 is attached to said sliding member 46.
Claims (62)
1. A linear transfer device for converting rotational motion of an electric motor into linear motion along a threaded rod, said linear transfer device comprising:
a) a threaded rod;
b) an enclosing electric-motor housing with front and rear walls having axially aligned openings for freely passing said threaded rod to extend in both directions;
c) an outside spin bi-directional electric motor integrated with said housing and including a radially inner hollow axle and a generally (concentric) radially outer rotor assembly;
d) said electric motor comprising a rotating inner axle, said axle comprising a concentrically hollow core extending the full length of the axle, said hollow axle-core being at least partly tapped such that said threaded rod enters the tapped axle core at one end and extends the length of the tapped axle core and said threaded rod exits the other end of the tapped axle, and the thread of said threaded rod engages the matching tap of said motor's tapped axle;
e) a drive motor housing comprising a can and an end-wall, and an opening axially aligned at each end such that the end walls of the motor-axle are open for passing said threaded rod through the tapped axle of said motor in a nut and screw type manner with the threaded rod acting as the screw and the tapped axle acting as the nut;
f) a method for securing said (tapped-axle) motor to a main body;
g) a method of restricting said electric motor housing from revolving about the threaded rod during rotation of the tapped axle while allowing linear travel of the threaded rod through the tapped axle of said motor;
h) a bushing (or bearing) disposed radially at each end of the motor axle, said bushing (or bearing) positioned between said motor axle and said motor housing;
i) said threaded rod secured at least at one end to a member such that said threaded rod is restricted from rotating however said threaded rod is allowed to move in a linear path through the tapped axle of said motor;
j) a linear transfer device wherein said threaded rod extends through the tapped core of said tapped axle of said bi-directional electric motor such that when said motor is energized the electric-motor's tapped axle rotates causing said threaded rod to travel through said tapped axle (and beyond) in a to-and-fro motion;
a) a threaded rod;
b) an enclosing electric-motor housing with front and rear walls having axially aligned openings for freely passing said threaded rod to extend in both directions;
c) an outside spin bi-directional electric motor integrated with said housing and including a radially inner hollow axle and a generally (concentric) radially outer rotor assembly;
d) said electric motor comprising a rotating inner axle, said axle comprising a concentrically hollow core extending the full length of the axle, said hollow axle-core being at least partly tapped such that said threaded rod enters the tapped axle core at one end and extends the length of the tapped axle core and said threaded rod exits the other end of the tapped axle, and the thread of said threaded rod engages the matching tap of said motor's tapped axle;
e) a drive motor housing comprising a can and an end-wall, and an opening axially aligned at each end such that the end walls of the motor-axle are open for passing said threaded rod through the tapped axle of said motor in a nut and screw type manner with the threaded rod acting as the screw and the tapped axle acting as the nut;
f) a method for securing said (tapped-axle) motor to a main body;
g) a method of restricting said electric motor housing from revolving about the threaded rod during rotation of the tapped axle while allowing linear travel of the threaded rod through the tapped axle of said motor;
h) a bushing (or bearing) disposed radially at each end of the motor axle, said bushing (or bearing) positioned between said motor axle and said motor housing;
i) said threaded rod secured at least at one end to a member such that said threaded rod is restricted from rotating however said threaded rod is allowed to move in a linear path through the tapped axle of said motor;
j) a linear transfer device wherein said threaded rod extends through the tapped core of said tapped axle of said bi-directional electric motor such that when said motor is energized the electric-motor's tapped axle rotates causing said threaded rod to travel through said tapped axle (and beyond) in a to-and-fro motion;
2. A linear transfer device as in Claim 1 wherein rotational motion of said tapped axle is converted into linear motion of said threaded rod to move said threaded rod through a path defined by the shape of said threaded rod;
3. A linear transfer device as in Claim 1 wherein the direction of travel of the threaded rod through said tapped axle will depend on the direction of rotation of the tapped-axle of the bi-directional electric motor;
4. A linear transfer device as in Claim 1 wherein if the threaded rod is curved then the linear distance of the tap along the tapped axle core is such that a curved threaded rod passes through the axle core and engages the tap of the axle without jamming;
5. A linear transfer device as in Claim 1 wherein if said threaded rod is not straight and if said tap of the tapped axle extends the full length of the axle then the tapped axle is sufficiently short such that the threaded rod does not jam inside the tapped axle;
6. A linear transfer device as in Claim 5 wherein said linear distance of the tap along the axle core ensures sufficient contact between the tap of the axle and the thread of said threaded rod to perform functional transfer needs, said distance generally to extend a minimum linear distance of 0.5 inches;
7. A linear transfer device as in Claim 5 wherein said linear distance of the tap ensures sufficient contact between the tap of the axle and the thread of said threaded rod to perform functional needs, said distance generally not to exceed a linear distance of 2.5 inches (for light duty transfer loads of 100 lbs or less);
8. A linear transfer device as in Claim 5 wherein the tap of said tapped axle is preceded and/or succeeded by a concentric clearance opening of sufficient clearance to allow a curved threaded rod to extend the length of the tapped axle, said threaded rod engaging the tap of the tapped axle, without said threaded rod jamming into said radial clearance walls of said tapped axle;
9. A linear transfer device as in Claim 5 wherein the linear distance of engagement between the thread of a curved threaded rod and the tap of the tapped axle is such that the rod's curvilinear deviation from a straight path along said linear distance of engagement is less than the margin of play between the threaded rod and the tap of the axle along said linear distance of engagement;
10. A linear transfer device as in Claim 5 wherein the linear distance of engagement between the threaded rod and the tapped axle is such that at least a minimal margin of play remains between the thread of the threaded rod and the tap of the tapped axle along said linear distance of engagement;
11.A linear transfer device as in Claim 5 wherein if the linear distance of engagement between the threaded rod and the tapped axle is less than the linear length of said tapped axle, and if said threaded rod cannot extend the full length of the axle core without jamming into said core wall(s), then a concentric clearance hole will proceed and/or succeed the tap of the axle, said clearance hole being sufficiently large to allow said threaded rod to extend beyond the axle's inner core walls unobstructed;
12.A linear transfer device as in Claim 1 wherein said partial tap of the tapped axle core extends generally from the linear center of the motor axle core in both directions thus having the tap centered within the tapped axle core;
13.A linear transfer device as in Claim 1 wherein marginal play exists between the thread of the curved threaded rod and the tap of the tapped axle, such that given a threaded rod of a specific curvature, the linear length of tap along the tapped axle must be sufficiently short such that the curvature's axial deviation from a straight path of the rod, along the distance where the rod engages the tap, said curvature does not exceed said margin of play between the threaded rod and the tap of the tapped axle;
14. a) A linear transfer device as in Claim 1 wherein said hollow core is at least partly tapped, and said tap extends a linear distance "L" along the hollow axle core, and;
b) said tap is generally centered within the hollow core of said axle;
c) a curved threaded rod enters said hollow axle core at one end, said rod extends the full length of the hollow axle core and said rod exits the other end of the hollow axle, and the thread of the threaded rod engages the tap of the tapped axle along said linear distance "L";
d) marginal play exists between the thread of said curved threaded rod and the tap of said tapped axle along the distance of engagement of the thread and tap referred to as linear distance "L";
e) deviation of the curvature of the rod from the straight axis of the tap along said distance of engagement "L" is made not to exceed said margin of play between the thread and the tap;
f) a clearance hole concentric to the tapped axle core precedes and succeeds the tap of the core such that the curved rod extends though both sides of the distance of engagement "L" without jamming into the axle core;
g) for light duty applications where the transfer load is 100 lbs or less, distance "L" is generally between 0.500 inches and 2.500 inches;
b) said tap is generally centered within the hollow core of said axle;
c) a curved threaded rod enters said hollow axle core at one end, said rod extends the full length of the hollow axle core and said rod exits the other end of the hollow axle, and the thread of the threaded rod engages the tap of the tapped axle along said linear distance "L";
d) marginal play exists between the thread of said curved threaded rod and the tap of said tapped axle along the distance of engagement of the thread and tap referred to as linear distance "L";
e) deviation of the curvature of the rod from the straight axis of the tap along said distance of engagement "L" is made not to exceed said margin of play between the thread and the tap;
f) a clearance hole concentric to the tapped axle core precedes and succeeds the tap of the core such that the curved rod extends though both sides of the distance of engagement "L" without jamming into the axle core;
g) for light duty applications where the transfer load is 100 lbs or less, distance "L" is generally between 0.500 inches and 2.500 inches;
15. A linear transfer device as in Claim 1 wherein the general principle applies that as the radius of curvature of the threaded rod decreases then the linear length of the tap along the tapped axle core decreases in order to prevent jamming of the device during motor-axle rotation;
16.A linear transfer device as in Claim 1 wherein the linear length of the tap along the tapped axle is at minimum 0.5 inches;
17.A linear transfer device as in Claim 1 wherein said tapped axle of said motor serves as a rotating nut and said rotating nut is threadingly engageable with said threaded rod;
18.A linear transfer device as in Claim 1 wherein said threaded rod is between 0.250" and 0.500" in diameter;
19.A linear transfer device as in Claim 1 wherein energization of said motor will generate movement of the rod in one direction and reversal of motor rotation generates movement of said rod in the opposite direction;
20.A linear transfer device as in Claim 1 wherein said threaded rod is consistent in rod-diameter throughout the distance of travel of the electric motor;
21.A linear transfer device as in Claim 1 wherein said threaded rod is consistent in thread size throughout the distance of travel of the electric motor;
22.A linear transfer device as in Claim 1 wherein said threaded rod is consistent in thread pitch throughout the distance of travel of the electric motor;
23.A linear transfer device as in Claim 1 wherein said threaded rod is metallic;
24.A linear transfer device as in Claim 1 wherein said threaded rod is plastic;
25.A linear transfer device as in Claim 1 wherein said threaded rod comprises a solid core;
26.A linear transfer device as in Claim 1 wherein said threaded rod comprises a hollow core;
27.A linear transfer device as in Claim 1 wherein said threaded rod is flexible;
28.A linear transfer device as in Claim 5 wherein said threaded rod is straight, consistently curved, inconsistently curved or a combination thereof;
29.A linear transfer device as in Claim 1 wherein said threaded rod comprises a physical shape equal to the path of motion;
30.A linear transfer device as in Claim 1 wherein said threaded rod is made of a material that is not affected by magnetism;
31.A linear transfer device as in Claim 1 wherein said threaded rod is made of a material that is affected by magnetism;
32.A linear transfer device as in Claim 1 wherein said threaded rod is sufficiently sturdy such that said threaded rod is resistant to physical deformation of shape under regular operating load conditions;
33.A linear transfer device as in Claim 1 wherein the object to be transferred is secured:
a) directly to said threaded rod, or;
b) indirectly to said threaded rod by means of a connecting member;
a) directly to said threaded rod, or;
b) indirectly to said threaded rod by means of a connecting member;
34.A linear transfer device as in Claim 1 wherein the cross section of said threaded rod is:
a) round, or;
b) comprises one flat side, or;
c) comprises two flat sides;
a) round, or;
b) comprises one flat side, or;
c) comprises two flat sides;
35.A linear transfer device as in Claim 34 wherein the front and/or end openings of said tapped axle are preceded and/or succeeded by a permanently fixed member(s), said members) comprising an opening, said opening shaped in the form of the cross section of said threaded rod, in the form of a key and key-hole method, to improve guiding of threaded rod and prevent rotation of threaded rod;
36.A linear transfer device as in Claim 1 wherein one end of said threaded rod is secured to the object to be moved directly or by means of a connecting member;
37.A linear transfer device as in Claim 1 wherein both ends of said threaded rod are secured to the object(s) to be moved directly or by means of a connecting member;
38.A linear transfer device as in Claim 1 wherein said threaded rod is secured to the object to be moved at one or both ends by means of a stamped bracket;
39.A linear transfer device as in Claim 1 wherein said threaded rod is secured to the object to be moved at one or both ends by means of a die-cast member;
40.A linear transfer device as in Claim 1 wherein said threaded rod and a mounting member at either end of the threaded rod are (die cast as) one unit;
41.A linear transfer device as in Claim 1 wherein at least one end of the threaded rod is secured (directly or indirectly) to the object being transferred;
42.A linear transfer device as in Claim 1 wherein both ends of the threaded rod are secured to one or more objects to be moved;
43.A linear transfer device as in Claim 1 wherein the object to be transferred is secured directly or indirectly to the end(s) of said threaded rod and said object serves to prevent said threaded rod from revolving within said tapped-axle during motor operation;
44.A linear transfer device as in Claim 1 wherein the object to be transferred is guided along its own path by an external guiding method and said linear transfer device provides transfer functions to said object;
45.A linear transfer device as in Claim 1 wherein the object to be transferred is guided along its own path by an external guiding method and object serves to provide additional stability and/or guiding for said linear transfer device;
46.A linear transfer device as in Claim 1 wherein said threaded rod serves to guide the object to be transferred along a specific path;
47.A linear transfer device as in Claim 1 wherein said tapped axle is made of a material that is not affected by magnetism;
48.A linear transfer device as in Claim 1 wherein said tapped axle is made of a material that is affected by magnetism;
49.A linear transfer device as in Claim 1 wherein the thread of said threaded rod and the tap of said tapped axle serve as a direct gearing mechanism;
50.A linear transfer device as in Claim 1 wherein the thread of said threaded rod and the matching tap of said tapped axle will vary depending on motor used, load requirements, speed of object travel, cycle time, and motor rotations per minute;
51.A linear transfer device as in Claim 1 wherein said motor housing is restricted from spinning about the threaded rod during motor operation;
52.A linear transfer device as in Claim 1 wherein said motor housing is immobilized by means of a mounting member;
53.A linear transfer device as in Claim 1 wherein said motor housing is permitted to tilt as the rod advances through said motor axle;
54.A linear transfer device as in Claim 1 wherein a tilting motor may be used with a straight threaded rod to generate transfer motion along a curved (non-straight) path;
55.A linear transfer device as in Claim 1 wherein the said mounting member and the can of said motor housing and said end-wall of the motor housing are three separate units;
56.A linear transfer device as in Claim 1 wherein the said mounting member and the can of the said motor housing are one unit;
57.A linear transfer device as in Claim 1 wherein the said mounting member and the end-wall of said motor housing are one unit;
58.A linear transfer device as in Claim 1 wherein a bearing disposed radially at each end of the motor axle is positioned between said motor axle and said motor housing;
59.A linear transfer device as in Claim 1 wherein magnets of the electric motor which are external to the rotor assembly are permanent type magnets;
60.A linear transfer device as in Claim 1 wherein magnets of the electric motor which are external to the rotor assembly are electromagnets;
61. The following claims apply to applications of said linear transfer device requiring sturdy guiding:
a) A linear transfer device as in Claim 1 comprising a guiding member;
b) Said guiding member extending at least one side of said motor;
c) Said guiding member comprising a shape equal to the travel path of said threaded rod;
d) Said guiding member fixedly secured at both ends;
e) Said guiding member extending the path of travel of said threaded rod;
f) Said guiding member slidingly engaged by a sliding unit;
g) Said sliding unit being affixed to the end of said threaded rod;
h) Said sliding unit being affixed to at least one end of said threaded rod;
i) Said sliding unit sliding along said guiding member thus guiding said threaded rod;
j) The object to be transferred is attached to said sliding unit;
k) Said guiding member being a rail or a rod or a channel or other;
l) Said sliding unit being pushed and pulled along said guiding member by said threaded rod;
m) Said guiding member affixed at least at one point to said tapped-axle-motor;
a) A linear transfer device as in Claim 1 comprising a guiding member;
b) Said guiding member extending at least one side of said motor;
c) Said guiding member comprising a shape equal to the travel path of said threaded rod;
d) Said guiding member fixedly secured at both ends;
e) Said guiding member extending the path of travel of said threaded rod;
f) Said guiding member slidingly engaged by a sliding unit;
g) Said sliding unit being affixed to the end of said threaded rod;
h) Said sliding unit being affixed to at least one end of said threaded rod;
i) Said sliding unit sliding along said guiding member thus guiding said threaded rod;
j) The object to be transferred is attached to said sliding unit;
k) Said guiding member being a rail or a rod or a channel or other;
l) Said sliding unit being pushed and pulled along said guiding member by said threaded rod;
m) Said guiding member affixed at least at one point to said tapped-axle-motor;
62. The following claims apply to applications of said linear transfer device to automotive applications:
a) A linear transfer device as in Claim 1 wherein said tapped axle motor is affixed to a stationary vehicle panel, stationary vehicle body part or vehicle frame, and a straight or curved threaded rod is used to engage said tapped-axle-motor and said threaded rod is connected at one or both ends to an object to be moved for the purpose of transferring said object between two different positions, said object being:
b) Window regulator c) Power antenna d) Power mirrors e) Power sunfoor f) Power steering g) Power suspension/ shock absorption h) Power convertible top-up to top-down mechanism i) Power spoiler j) Power seats k) Power head-rest l) Power headlight shifting (with direction of turning) m) Power headlight pop-up n) Power windshield wiping o) Power gas door p) Other
a) A linear transfer device as in Claim 1 wherein said tapped axle motor is affixed to a stationary vehicle panel, stationary vehicle body part or vehicle frame, and a straight or curved threaded rod is used to engage said tapped-axle-motor and said threaded rod is connected at one or both ends to an object to be moved for the purpose of transferring said object between two different positions, said object being:
b) Window regulator c) Power antenna d) Power mirrors e) Power sunfoor f) Power steering g) Power suspension/ shock absorption h) Power convertible top-up to top-down mechanism i) Power spoiler j) Power seats k) Power head-rest l) Power headlight shifting (with direction of turning) m) Power headlight pop-up n) Power windshield wiping o) Power gas door p) Other
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2512258 CA2512258A1 (en) | 2005-07-14 | 2005-07-14 | Direct drive linear transfer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2512258 CA2512258A1 (en) | 2005-07-14 | 2005-07-14 | Direct drive linear transfer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2512258A1 true CA2512258A1 (en) | 2007-01-14 |
Family
ID=37663411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2512258 Abandoned CA2512258A1 (en) | 2005-07-14 | 2005-07-14 | Direct drive linear transfer device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2512258A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201700004014A1 (en) * | 2017-01-16 | 2018-07-16 | Ognibene Power Spa | STEERING SYSTEM |
| DE102021104888A1 (en) | 2021-03-01 | 2022-09-15 | Stabilus Gmbh | Linear drive for opening and closing a motor vehicle door |
| DE102021213939A1 (en) | 2021-12-08 | 2023-06-15 | Zf Friedrichshafen Ag | Actuator of a steer-by-wire steering and steer-by-wire steering |
-
2005
- 2005-07-14 CA CA 2512258 patent/CA2512258A1/en not_active Abandoned
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201700004014A1 (en) * | 2017-01-16 | 2018-07-16 | Ognibene Power Spa | STEERING SYSTEM |
| EP3348452A1 (en) * | 2017-01-16 | 2018-07-18 | Ognibene Power S.P.A. | Steering system |
| DE102021104888A1 (en) | 2021-03-01 | 2022-09-15 | Stabilus Gmbh | Linear drive for opening and closing a motor vehicle door |
| DE102021213939A1 (en) | 2021-12-08 | 2023-06-15 | Zf Friedrichshafen Ag | Actuator of a steer-by-wire steering and steer-by-wire steering |
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