CA2729573C - Electric push rod convenient for mounting - Google Patents
Electric push rod convenient for mounting Download PDFInfo
- Publication number
- CA2729573C CA2729573C CA2729573A CA2729573A CA2729573C CA 2729573 C CA2729573 C CA 2729573C CA 2729573 A CA2729573 A CA 2729573A CA 2729573 A CA2729573 A CA 2729573A CA 2729573 C CA2729573 C CA 2729573C
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- CA
- Canada
- Prior art keywords
- puller
- hole
- limit
- gearbox cover
- push rod
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- 230000005540 biological transmission Effects 0.000 description 22
- 238000010586 diagram Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 1
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
-
- 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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- 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
- F16H2025/2031—Actuator casings
-
- 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
- F16H2025/2062—Arrangements for driving the actuator
- F16H2025/2081—Parallel arrangement of drive motor to screw axis
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- General Details Of Gearings (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
An electric push rod convenient for mounting. The push rod includes a motor (10) and a reduction gearbox (11). The reduction gearbox (11) includes a gearbox cover (1) and an end puller (2). The gearbox cover (1) and the end puller (2) are separated from each other. There is a through-hole (3) in the gearbox cover (1). The inner terminal of the end puller (2) is provided with a limit end (4) to prevent the end puller (2) from pulling out of the through-hole (3). The outer terminal of the end puller (2) is provided with a mounting hole (7). The limit end (4) cooperates with the inner terminal of the through-hole (3) to adjust the relative angle between the mounting hole (7) and the gearbox cover (1).
Description
ELECTRIC PUSH ROD CONVENIENT FOR MOUNTING
TECHNICAL FIELD
The invention relates to an electric push rod convenient for mounting, belonging to the technical field of electric push rods.
BACKGROUND OF THE INVENTION
An electric push rod plays a role of providing linear drive for a mechanism of certain device, which is mostly mounted and fixed by an end puller on a reduction gearbox so as to connect a transmission connecting hole at the front end of a guiding pipe of the electric push rod to a linear motion mechanism of the device for drive. In the prior art, the end puller is usually integrated with the cover of the reduction gearbox, and thus the relative angle between a mounting hole on the end puller and a transmission connecting hole at the front end of the guiding pipe is fixed, and accordingly, the relative angle between the mounting hole of the mounting part for mounting the electric push rod and the transmission connecting hole of the linear motion mechanism is unchangeable. Thus the relative angle between the mounting hole on the end puller of the electric push rod and the transmission connecting hole at the front end of the guiding pipe being not conform to the relative angle between the mounting hole of the mounting part and the linear motion mechanism causes hard mounting of the electric push rod and results in inconvenience in mounting.
SUMMARY OF THE INVENTION
The object of the present invention is to provide an electric push rod convenient for mounting and with an adjustable relative angle between a mounting hole on an end puller and a transmission connecting hole at the front end of a guiding pipe to meet mounting requirements of different places, thereby solving the problem that in the prior art the unchangeable relative angle between a mounting hole on the end puller and the transmission connecting hole at the front end of the guiding pipe resulting in the unchangeable relative angle between the mounting hole of the mounting part for mounting the electric push rod and the connecting hole of a linear motion mechanism, so if the relative angle between the mounting hole on the end puller of the electric push rod and the transmission connecting hole at the front end of the guiding pipe is not conform to the relative angle between the mounting hole of the mounting part and the linear motion mechanism, the electric push rod can not be mounted causing inconvenience in mounting.
The above technical object is mainly achieved by the following technical scheme: an electric push rod convenient for mounting, which includes a motor and a reduction gearbox. The reduction gearbox comprises a gearbox cover and an end puller. The gearbox cover and the end puller are separated from each other. A through-hole is positioned in the gearbox cover;
the body of the end puller is cylindrical in shape fitting to the through hole in the gearbox cover; the end puller is provided with a limit end positioned in the inner end of the through hole of the gearbox cover to prevent the end puller from being pulled out of the through-hole of the gearbox cover; the part of the end puller corresponding to the outer end of the through hole of the gearbox cover is provided with an external thread which fits to a locking nut; the outer end of the end puller is provided with a mounting hole; and the fixation at a variety of angles between mounting hole on the end puller and the gearbox cover is realized by the limit end of the end puller fitting to the inner end of the through hole of the gearbox cover. In the invention, the end puller is designed to be separated from the gearbox cover, and the through hole fitting to the end puller is positioned in the gearbox cover, so that the adjustment of angles between the mounting hole on the end puller and the transmission connecting hole at the front end of the guiding pipe of the electric push rod is realized through adjusting angles between the end puller and the through hole of the gearbox cover by the limit end of the end puller fitting to the inner end of the through hole of the gearbox cover and locking the relative position between the end puller and the through hole of the gearbox cover by the locking nut fitting to the external thread of the end puller, thereby satisfying mounting requirements of
TECHNICAL FIELD
The invention relates to an electric push rod convenient for mounting, belonging to the technical field of electric push rods.
BACKGROUND OF THE INVENTION
An electric push rod plays a role of providing linear drive for a mechanism of certain device, which is mostly mounted and fixed by an end puller on a reduction gearbox so as to connect a transmission connecting hole at the front end of a guiding pipe of the electric push rod to a linear motion mechanism of the device for drive. In the prior art, the end puller is usually integrated with the cover of the reduction gearbox, and thus the relative angle between a mounting hole on the end puller and a transmission connecting hole at the front end of the guiding pipe is fixed, and accordingly, the relative angle between the mounting hole of the mounting part for mounting the electric push rod and the transmission connecting hole of the linear motion mechanism is unchangeable. Thus the relative angle between the mounting hole on the end puller of the electric push rod and the transmission connecting hole at the front end of the guiding pipe being not conform to the relative angle between the mounting hole of the mounting part and the linear motion mechanism causes hard mounting of the electric push rod and results in inconvenience in mounting.
SUMMARY OF THE INVENTION
The object of the present invention is to provide an electric push rod convenient for mounting and with an adjustable relative angle between a mounting hole on an end puller and a transmission connecting hole at the front end of a guiding pipe to meet mounting requirements of different places, thereby solving the problem that in the prior art the unchangeable relative angle between a mounting hole on the end puller and the transmission connecting hole at the front end of the guiding pipe resulting in the unchangeable relative angle between the mounting hole of the mounting part for mounting the electric push rod and the connecting hole of a linear motion mechanism, so if the relative angle between the mounting hole on the end puller of the electric push rod and the transmission connecting hole at the front end of the guiding pipe is not conform to the relative angle between the mounting hole of the mounting part and the linear motion mechanism, the electric push rod can not be mounted causing inconvenience in mounting.
The above technical object is mainly achieved by the following technical scheme: an electric push rod convenient for mounting, which includes a motor and a reduction gearbox. The reduction gearbox comprises a gearbox cover and an end puller. The gearbox cover and the end puller are separated from each other. A through-hole is positioned in the gearbox cover;
the body of the end puller is cylindrical in shape fitting to the through hole in the gearbox cover; the end puller is provided with a limit end positioned in the inner end of the through hole of the gearbox cover to prevent the end puller from being pulled out of the through-hole of the gearbox cover; the part of the end puller corresponding to the outer end of the through hole of the gearbox cover is provided with an external thread which fits to a locking nut; the outer end of the end puller is provided with a mounting hole; and the fixation at a variety of angles between mounting hole on the end puller and the gearbox cover is realized by the limit end of the end puller fitting to the inner end of the through hole of the gearbox cover. In the invention, the end puller is designed to be separated from the gearbox cover, and the through hole fitting to the end puller is positioned in the gearbox cover, so that the adjustment of angles between the mounting hole on the end puller and the transmission connecting hole at the front end of the guiding pipe of the electric push rod is realized through adjusting angles between the end puller and the through hole of the gearbox cover by the limit end of the end puller fitting to the inner end of the through hole of the gearbox cover and locking the relative position between the end puller and the through hole of the gearbox cover by the locking nut fitting to the external thread of the end puller, thereby satisfying mounting requirements of
2 different places and improving the convenience of the electric push rod in mounting.
Preferably, the limit end is of an external regular polygonal structure, and the circumference of the inner end of the through hole of the gearbox cover is provided with at least one internal regular polygonal groove capable of fitting to the external regular polygonal structure of the limit end. When the angle between the mounting hole on the end puller and the transmission connecting hole at the front end of the guiding pipe of the electric push rod needs to be adjusted, the locking nut is loosened from the external thread of the end puller, the end puller is pushed a distance towards the inner end of the through hole of the gearbox cover so as to pull the external regular polygonal structure of the limit end of the end puller out of the internal regular polygonal groove of the inner end of the through hole of the gearbox cover, the end puller is rotated relative to the through hole to a required angle for mounting and then drawn outwardly a distance so as to fit the external regular polygonal structure of the limit end of the end puller to the internal regular polygonal groove of the inner end of the through hole of the gearbox cover, and finally the locking nut is tightly screwed with the external thread of the end puller to lock the relative position between the end puller and the gearbox cover for satisfying mounting requirements of different places.
Preferably, the circumference of the inner end of the through hole of the gearbox cover is provided with a plurality of concentric internal regular polygonal grooves capable of fitting to the external regular polygonal structure of the limit end, and the internal regular polygonal grooves are alternately disposed in the circumference direction. Accordingly, the alternate arrangement of the internal regular polygonal grooves at the inner end of the through hole of the gearbox cover enables more fixation positions to be available between the end puller and the circumference of the through hole of the gearbox cover to further improve the adjustability between the end puller and the transmission connecting hole at the front end of the guiding pipe of the electric push rod and facilitate the mounting of the electric push rod for meeting mounting requirements of more places.
Preferably, the limit end is of an external regular polygonal structure, and the circumference of the inner end of the through hole of the gearbox cover is provided with at least one internal regular polygonal groove capable of fitting to the external regular polygonal structure of the limit end. When the angle between the mounting hole on the end puller and the transmission connecting hole at the front end of the guiding pipe of the electric push rod needs to be adjusted, the locking nut is loosened from the external thread of the end puller, the end puller is pushed a distance towards the inner end of the through hole of the gearbox cover so as to pull the external regular polygonal structure of the limit end of the end puller out of the internal regular polygonal groove of the inner end of the through hole of the gearbox cover, the end puller is rotated relative to the through hole to a required angle for mounting and then drawn outwardly a distance so as to fit the external regular polygonal structure of the limit end of the end puller to the internal regular polygonal groove of the inner end of the through hole of the gearbox cover, and finally the locking nut is tightly screwed with the external thread of the end puller to lock the relative position between the end puller and the gearbox cover for satisfying mounting requirements of different places.
Preferably, the circumference of the inner end of the through hole of the gearbox cover is provided with a plurality of concentric internal regular polygonal grooves capable of fitting to the external regular polygonal structure of the limit end, and the internal regular polygonal grooves are alternately disposed in the circumference direction. Accordingly, the alternate arrangement of the internal regular polygonal grooves at the inner end of the through hole of the gearbox cover enables more fixation positions to be available between the end puller and the circumference of the through hole of the gearbox cover to further improve the adjustability between the end puller and the transmission connecting hole at the front end of the guiding pipe of the electric push rod and facilitate the mounting of the electric push rod for meeting mounting requirements of more places.
3 Preferably, the number of edges of the external regular polygonal structure is from three to eight, and the internal regular polygonal groove corresponds to the external regular polygonal structure.
Preferably, the limit end is of an external gear ring structure, and the circumference of the inner end of the through hole of the gearbox cover is provided with an internal gear ring structure fitting to the external gear ring structure. When the angle between the mounting hole on the end puller and the transmission connecting hole at the front end of the guiding pipe of the electric push rod needs to be adjusted, the locking nut is loosened from the external thread of the end puller, the end puller is pushed a distance towards the inner end of the through hole of the gearbox cover so as to pull the external gear ring structure of limit end of the end puller out of the internal gear ring structure of the inner end of the through hole of the gearbox cover, the end puller is rotated relative to the through hole to a required angle for mounting and then is outwardly drawn a distance so as to fit the external gear ring structure of the limit end of the end puller to the internal gear ring structure of the inner end of through hole of the gearbox cover, and finally the locking nut is tightly screwed with the external thread of the end puller to lock the relative position between the end puller and the gearbox cover for satisfying mounting requirements of different places.
Preferably, the limit end is a limit pin which is vertically connected with the axis of the end puller, and the circumferential end surface of the inner end of the through hole of the gearbox cover is provided with a plurality of limit grooves capable of fitting to the limit pin. When the angle between the mounting hole on the end puller and the transmission connecting hole at the front end of the guiding pipe of the electric push rod needs to be adjusted, the locking nut is loosened from the external thread of the end puller, the end puller is pushed a distance towards the inner end of the through hole of the gearbox cover so as to pull the limit pin of the limit end of the end puller out of the limit groove of the inner end of the through hole of the gearbox cover, the end puller is rotated relative to the through hole to a required angle for mounting and then outwardly drawn a distance so as to fit the limit pin of the limit end of the
Preferably, the limit end is of an external gear ring structure, and the circumference of the inner end of the through hole of the gearbox cover is provided with an internal gear ring structure fitting to the external gear ring structure. When the angle between the mounting hole on the end puller and the transmission connecting hole at the front end of the guiding pipe of the electric push rod needs to be adjusted, the locking nut is loosened from the external thread of the end puller, the end puller is pushed a distance towards the inner end of the through hole of the gearbox cover so as to pull the external gear ring structure of limit end of the end puller out of the internal gear ring structure of the inner end of the through hole of the gearbox cover, the end puller is rotated relative to the through hole to a required angle for mounting and then is outwardly drawn a distance so as to fit the external gear ring structure of the limit end of the end puller to the internal gear ring structure of the inner end of through hole of the gearbox cover, and finally the locking nut is tightly screwed with the external thread of the end puller to lock the relative position between the end puller and the gearbox cover for satisfying mounting requirements of different places.
Preferably, the limit end is a limit pin which is vertically connected with the axis of the end puller, and the circumferential end surface of the inner end of the through hole of the gearbox cover is provided with a plurality of limit grooves capable of fitting to the limit pin. When the angle between the mounting hole on the end puller and the transmission connecting hole at the front end of the guiding pipe of the electric push rod needs to be adjusted, the locking nut is loosened from the external thread of the end puller, the end puller is pushed a distance towards the inner end of the through hole of the gearbox cover so as to pull the limit pin of the limit end of the end puller out of the limit groove of the inner end of the through hole of the gearbox cover, the end puller is rotated relative to the through hole to a required angle for mounting and then outwardly drawn a distance so as to fit the limit pin of the limit end of the
4 end puller to another limit groove of the inner end of the through hole of the gearbox cover, and finally the locking nut is tightly screwed with the external thread of the end puller to lock the relative position between the end puller and the gearbox cover for satisfying mounting requirements of different places.
Preferably, the limit end is a truncated cone that has a diameter greater than a diameter of the cylindrical part of the end puller body, the end surface of the truncated cone adjacent to the inner surface of the gearbox cover is provided with movable end surface teeth, and correspondingly, the inner surface of the gearbox cover is provided with fixed end surface teeth fitting to the movable end surface teeth on the truncated cone along the circumference of the through hole. The movable end surface teeth means that the end puller can rotates relative to the gearbox cover, and the fixed end surface teeth means that the gearbox cover is in a stationary state when the end puller rotates. When the angle between the mounting hole on the end puller and the transmission connecting hole at the front end of the guiding pipe of the electric push rod needs to be adjusted, the locking nut is loosened from the external thread of the end puller, the end puller is pushed a distance towards the inner end of the through hole of the gearbox cover so as to separate the movable end surface teeth on the truncated cone of the end puller from the fixed end surface teeth of the inner end of the through hole of the gearbox cover, the end puller is rotated relative to the through hole to a required angle for mounting and then outwardly drawn a distance so as to engage the movable end surface teeth on the truncated cone of the end puller with the fixed end surface teeth of the inner end of through hole of the gearbox cover, and finally the locking nut is tightly screwed with the external thread of the end puller to lock the relative position between the end puller and the gearbox cover for satisfying mounting requirements of different places.
Thus, the invention has the advantages of capability of adjusting the relative angle between the mounting hole on the end puller and the transmission connecting hole at the front end of the guiding pipe to satisfy mounting requirements of different places and the like.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic diagram of the disassembled structure of the gearbox cover and the end puller of the invention;
FIG 2 is a schematic diagram of the planar structure of the gearbox cover of the invention;
FIG. 3 is a schematic diagram of the three-dimensional assembled structure of the gearbox cover and the end puller of the invention;
FIG. 4 is a schematic diagram of the planar assembled structure of the gearbox cover and the end puller of the invention; and FIG 5 is a sectional view of the invention.
DETAILED DESCRIPTION OF THE EMBODIMENTS
The technical scheme of the invention is further described by combing the following embodiments and figures.
Embodiment 1: referring to FIG. 5, an electric push rod includes a motor 10 and a reduction gearbox 11. The reduction gear box 11 comprises a gearbox cover 1, a gearbox body 12 and a reduction gear 13 disposed in the space defined by the gearbox body 12 and the gearbox cover 1. The output end of the reduction gearbox 11 is a screw rod 14, the reduction gear 13 plays a role of gearing down between the output shaft 15 of the motor 10 and the screw rod 14, a guiding pipe 16 fitting to the screw rod 14 through an inside thread is arranged outside the screw rod 14, the end part of the guiding pipe 16 is provided with a transmission connecting hole 17, an end puller 2 is arranged on the gearbox cover 1 in a split mode, and the outer end of the end puller 2 is provided with a mounting hole 7. Referring to figure 1, figure 2, figure 3 and figure 4, the gearbox cover 1 is provided with a through hole 3, the body of the end puller 2 is cylindrical in shape fitting to the through hole 3 of the gearbox cover 1, the part of the end puller 2 corresponding to the inner end of the through hole 3 of the gearbox cover is provided with a limit end 4 having a larger size than the diameter of the through hole 3 for preventing the end puller 2 from being pulled out of the through hole 3 of the gearbox cover 1, the peripheral profile of the limit end 4 is configured into an external regular hexagonal structure 9, the part of end puller 2 corresponding to the outer end of the through hole 3 of the gearbox cover 1 is provided with an external thread 5, and a locking nut 6 fits to the external thread 5 of the end puller 2. The circumference of the inner end of the through hole 3 is provided with two concentric internal regular hexagonal grooves 8 capable of respectively fitting to the external regular hexagonal structure of the limit end, and the internal regular hexagonal grooves are alternately arranged at an angle of 30 degree in the circumference direction.
When the electric push rod is mounted, referring to FIG. 3 and FIG. 5, the locking nut 6 is loosened from the external thread 5 of the end puller, the end puller 2 is pushed a distance towards the inner end of the through hole of the gearbox cover so as to pull the external regular hexagonal structure of the limit end of the end puller 2 out of the internal regular hexagonal groove of the inner end of the through hole of the gearbox cover, the mounting hole 7 of the end puller 2 is rotated to a required angle for mounting relative to the transmission connecting hole 17 at the front end of the guiding pipe 16 and then is drawn outwardly a distance to fit the external regular hexagonal structure of the limit end of the end puller to the internal hexagonal groove of the inner end of the through hole of the gearbox cover, and the locking nut is tightly screwed with the external thread of the end puller to lock the relative position between the end puller and the gearbox cover for satisfying mounting requirements of different places.
Embodiment 2: referring to FIG 5, an electric push rod includes a motor 10 and a reduction gearbox 11. The reduction gear box 11 comprises a gearbox cover 1, a gearbox body 12 and a reduction gear 13 disposed in the space defined by the gearbox body 12 and the gearbox cover 1. The output end of the reduction gearbox 11 is a screw rod 14, the reduction gear 13 plays a role of gearing down between the output shaft 15 of the motor 10 and the screw rod 14, a guiding pipe 16 fitting to the screw rod 14 through an internal thread is arranged outside the screw rod 14, the end part of the guiding pipe 16 is provided with a transmission connecting hole 17, an end puller 2 is arranged on the gearbox cover I in a split mode, and the outer end of the end puller 2 is provided with a mounting hole 7. The gearbox cover is provided with a through hole, the body of the end puller is cylindrical in shape fitting to the through hole of the gearbox cover, the part of the end puller corresponding to the inner end of the through hole is provided with a limit end having a larger size than the diameter of the through hole for preventing the end puller from being pulled out of the through hole of the gearbox cover, the limit end is of an external gear ring structure, the part of the end puller corresponding to the outer end of the through hole of the gearbox cover is provided an external thread, a locking nut fits to the external thread of the end puller, and the outer end of the end puller is provided with the mounting hole. The circumference of the inner end of the through hole of the gearbox cover is provided with an internal gear ring structure fitting to the external gear ring structure of the limit end of the end puller.
When the electric push rod is mounted, referring to FIG. 5, the locking nut is loosened from the external thread of the end puller, the end puller 2 is pushed a distance towards the inner end of the through hole of the gearbox cover so as to pull the external gear ring structure of the limit end of the end puller out of the inner gear ring structure of the inner end of the through hole of the gearbox cover, the mounting hole 7 of the end puller 2 is rotated to a required angle for mounting relative to the transmission connecting hole 17 at the front end of the guiding pipe 16 and then is drawn outwardly a distance to fit the external gear ring structure of the limit end of the end puller to the internal gear ring structure of the inner end of the through hole of the gearbox cover, and the locking nut is tightly screwed with the external thread of the end puller to lock the relative position between the end puller and the gearbox cover for satisfying mounting requirements of different places.
Embodiment 3: referring to FIG 5, an electric push rod includes a motor 10 and a reduction gearbox 11. The reduction gear box 11 comprises a gearbox cover 1, a gearbox body 12 and a reduction gear 13 disposed in the space defined by the gearbox body 12 and the gearbox cover 1. The output end of the reduction gearbox I 1 is a screw rod 14, the reduction gear 13 plays a role of gearing down between the output shaft 15 of the motor 10 and the screw rod 14, a guiding pipe 16 fitting to the screw rod 14 through an internal thread is arranged outside the screw rod 14, the end part of the guiding pipe 16 is provided with a transmission connecting hole 17, an end puller 2 is arranged on the gearbox cover I in a split mode, and the outer end of the end puller 2 is provided with a mounting hole 7. The gearbox cover 1 is provided with a through hole, the body of the end puller is cylindrical in shape fitting to the through hole of the gearbox cover, the part of the end puller corresponding to the inner end of the through hole is provided with a limit end having a larger size than the diameter of the through hole for preventing the end puller from being pulled out of the through hole of the gearbox cover, the limit end is a limit pin which is vertically connected with the axis of the end puller, the part of the end puller corresponding to the outer end of the through hole of the gearbox cover is provided an external thread, a locking nut fits to the external thread of the end puller, and the outer end of the end puller is provided with the mounting hole. The circumferential end surface of the inner end of the through hole of the gearbox cover is provided with a plurality of limit grooves capable of fitting to the limit pin.
When the electric push rod is mounted, referring to FIG 5, the locking nut is loosened from the external thread of the end puller, the end puller 2 is pushed a distance towards the inner end of the through hole of the gearbox cover so as to pull the limit pin of the limit end of the end puller out of the limit groove of the inner end of the through hole of the gearbox cover, the mounting hole 7 of the end puller 2 is rotated to a required angle for mounting relative to the transmission connecting hole 17 at the front end of the guiding pipe 16 and then is drawn outwardly a distance to fit the limit pin of the limit end of the end puller to another limit groove of the inner end of the through hole of the gearbox cover, and the locking nut is tightly screwed with the external thread of the end puller to lock the relative position between the end puller and the gearbox cover for satisfying mounting requirements of different places.
Embodiment 4: referring to FIG 5, an electric push rod includes a motor 10 and a reduction gearbox 11. The reduction gear box 11 comprises a gearbox cover 1, a gearbox body 12 and a reduction gear 13 disposed in the space defined by the gearbox body 12 and the gearbox cover 1. The output end of the reduction gearbox 11 is a screw rod 14, the reduction gear 13 plays a role of gearing down between the output shaft 15 of the motor 10 and the screw rod 14, a guiding pipe 16 fitting to the screw rod 14 through an internal thread is arranged outside the screw rod 14, the end part of the guiding pipe 16 is provided with a transmission connecting hole 17, an end puller 2 is arranged on the gearbox cover 1 in a split mode, and the outer end of the end puller 2 is provided with a mounting hole 7. The gearbox cover is provided with a through hole, the body of the end puller is cylindrical in shape fitting to the through hole of the gearbox cover, the part of the end puller corresponding to the inner end of the through hole is provided with a limit end which is a truncated cone having a diameter greater than a diameter of the cylindrical part of the end puller body, the end surface of the truncated cone adjacent to the inner surface of the gearbox cover is provided with movable end surface teeth, and correspondingly, the inner surface of the gearbox cover is provided with fixed end surface teeth fitting to the movable end surface teeth on the truncated cone along the circumference of the through hole. The size of the limit end is greater than the diameter of the through hole so as to prevent the end puller from being pulled out of the through hole of the gearbox cover, the part of end puller corresponding to the outer end of the through hole of the gearbox cover is provided with an external thread, a locking nut fits to the external thread of the end puller, and the outer end of the end puller is provided with the mounting hole.
When the electric push rod is mounted, referring to FIG. 5, the locking nut is loosened from the external thread of the end puller, the end puller 2 is pushed a distance towards the inner end of the through hole of the gearbox cover so as to separate the movable end surface teeth on the truncated cone of the end puller from the fixed end surface teeth of the inner end of the through hole of the gearbox cover, the mounting hole 7 of the end puller 2 is rotated to a required angle for mounting relative to the transmission connecting hole 17 at the front end of the guiding pipe 16 and then is drawn outwardly a distance to engage the movable end surface teeth on the truncated cone of the end puller with the fixed end surface teeth of the inner end of the through hole of the gearbox cover, and the locking nut is tightly screwed with the external thread of the end puller to lock the relative position between the end puller and the gearbox cover for satisfying mounting requirements of different places.
Preferably, the limit end is a truncated cone that has a diameter greater than a diameter of the cylindrical part of the end puller body, the end surface of the truncated cone adjacent to the inner surface of the gearbox cover is provided with movable end surface teeth, and correspondingly, the inner surface of the gearbox cover is provided with fixed end surface teeth fitting to the movable end surface teeth on the truncated cone along the circumference of the through hole. The movable end surface teeth means that the end puller can rotates relative to the gearbox cover, and the fixed end surface teeth means that the gearbox cover is in a stationary state when the end puller rotates. When the angle between the mounting hole on the end puller and the transmission connecting hole at the front end of the guiding pipe of the electric push rod needs to be adjusted, the locking nut is loosened from the external thread of the end puller, the end puller is pushed a distance towards the inner end of the through hole of the gearbox cover so as to separate the movable end surface teeth on the truncated cone of the end puller from the fixed end surface teeth of the inner end of the through hole of the gearbox cover, the end puller is rotated relative to the through hole to a required angle for mounting and then outwardly drawn a distance so as to engage the movable end surface teeth on the truncated cone of the end puller with the fixed end surface teeth of the inner end of through hole of the gearbox cover, and finally the locking nut is tightly screwed with the external thread of the end puller to lock the relative position between the end puller and the gearbox cover for satisfying mounting requirements of different places.
Thus, the invention has the advantages of capability of adjusting the relative angle between the mounting hole on the end puller and the transmission connecting hole at the front end of the guiding pipe to satisfy mounting requirements of different places and the like.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic diagram of the disassembled structure of the gearbox cover and the end puller of the invention;
FIG 2 is a schematic diagram of the planar structure of the gearbox cover of the invention;
FIG. 3 is a schematic diagram of the three-dimensional assembled structure of the gearbox cover and the end puller of the invention;
FIG. 4 is a schematic diagram of the planar assembled structure of the gearbox cover and the end puller of the invention; and FIG 5 is a sectional view of the invention.
DETAILED DESCRIPTION OF THE EMBODIMENTS
The technical scheme of the invention is further described by combing the following embodiments and figures.
Embodiment 1: referring to FIG. 5, an electric push rod includes a motor 10 and a reduction gearbox 11. The reduction gear box 11 comprises a gearbox cover 1, a gearbox body 12 and a reduction gear 13 disposed in the space defined by the gearbox body 12 and the gearbox cover 1. The output end of the reduction gearbox 11 is a screw rod 14, the reduction gear 13 plays a role of gearing down between the output shaft 15 of the motor 10 and the screw rod 14, a guiding pipe 16 fitting to the screw rod 14 through an inside thread is arranged outside the screw rod 14, the end part of the guiding pipe 16 is provided with a transmission connecting hole 17, an end puller 2 is arranged on the gearbox cover 1 in a split mode, and the outer end of the end puller 2 is provided with a mounting hole 7. Referring to figure 1, figure 2, figure 3 and figure 4, the gearbox cover 1 is provided with a through hole 3, the body of the end puller 2 is cylindrical in shape fitting to the through hole 3 of the gearbox cover 1, the part of the end puller 2 corresponding to the inner end of the through hole 3 of the gearbox cover is provided with a limit end 4 having a larger size than the diameter of the through hole 3 for preventing the end puller 2 from being pulled out of the through hole 3 of the gearbox cover 1, the peripheral profile of the limit end 4 is configured into an external regular hexagonal structure 9, the part of end puller 2 corresponding to the outer end of the through hole 3 of the gearbox cover 1 is provided with an external thread 5, and a locking nut 6 fits to the external thread 5 of the end puller 2. The circumference of the inner end of the through hole 3 is provided with two concentric internal regular hexagonal grooves 8 capable of respectively fitting to the external regular hexagonal structure of the limit end, and the internal regular hexagonal grooves are alternately arranged at an angle of 30 degree in the circumference direction.
When the electric push rod is mounted, referring to FIG. 3 and FIG. 5, the locking nut 6 is loosened from the external thread 5 of the end puller, the end puller 2 is pushed a distance towards the inner end of the through hole of the gearbox cover so as to pull the external regular hexagonal structure of the limit end of the end puller 2 out of the internal regular hexagonal groove of the inner end of the through hole of the gearbox cover, the mounting hole 7 of the end puller 2 is rotated to a required angle for mounting relative to the transmission connecting hole 17 at the front end of the guiding pipe 16 and then is drawn outwardly a distance to fit the external regular hexagonal structure of the limit end of the end puller to the internal hexagonal groove of the inner end of the through hole of the gearbox cover, and the locking nut is tightly screwed with the external thread of the end puller to lock the relative position between the end puller and the gearbox cover for satisfying mounting requirements of different places.
Embodiment 2: referring to FIG 5, an electric push rod includes a motor 10 and a reduction gearbox 11. The reduction gear box 11 comprises a gearbox cover 1, a gearbox body 12 and a reduction gear 13 disposed in the space defined by the gearbox body 12 and the gearbox cover 1. The output end of the reduction gearbox 11 is a screw rod 14, the reduction gear 13 plays a role of gearing down between the output shaft 15 of the motor 10 and the screw rod 14, a guiding pipe 16 fitting to the screw rod 14 through an internal thread is arranged outside the screw rod 14, the end part of the guiding pipe 16 is provided with a transmission connecting hole 17, an end puller 2 is arranged on the gearbox cover I in a split mode, and the outer end of the end puller 2 is provided with a mounting hole 7. The gearbox cover is provided with a through hole, the body of the end puller is cylindrical in shape fitting to the through hole of the gearbox cover, the part of the end puller corresponding to the inner end of the through hole is provided with a limit end having a larger size than the diameter of the through hole for preventing the end puller from being pulled out of the through hole of the gearbox cover, the limit end is of an external gear ring structure, the part of the end puller corresponding to the outer end of the through hole of the gearbox cover is provided an external thread, a locking nut fits to the external thread of the end puller, and the outer end of the end puller is provided with the mounting hole. The circumference of the inner end of the through hole of the gearbox cover is provided with an internal gear ring structure fitting to the external gear ring structure of the limit end of the end puller.
When the electric push rod is mounted, referring to FIG. 5, the locking nut is loosened from the external thread of the end puller, the end puller 2 is pushed a distance towards the inner end of the through hole of the gearbox cover so as to pull the external gear ring structure of the limit end of the end puller out of the inner gear ring structure of the inner end of the through hole of the gearbox cover, the mounting hole 7 of the end puller 2 is rotated to a required angle for mounting relative to the transmission connecting hole 17 at the front end of the guiding pipe 16 and then is drawn outwardly a distance to fit the external gear ring structure of the limit end of the end puller to the internal gear ring structure of the inner end of the through hole of the gearbox cover, and the locking nut is tightly screwed with the external thread of the end puller to lock the relative position between the end puller and the gearbox cover for satisfying mounting requirements of different places.
Embodiment 3: referring to FIG 5, an electric push rod includes a motor 10 and a reduction gearbox 11. The reduction gear box 11 comprises a gearbox cover 1, a gearbox body 12 and a reduction gear 13 disposed in the space defined by the gearbox body 12 and the gearbox cover 1. The output end of the reduction gearbox I 1 is a screw rod 14, the reduction gear 13 plays a role of gearing down between the output shaft 15 of the motor 10 and the screw rod 14, a guiding pipe 16 fitting to the screw rod 14 through an internal thread is arranged outside the screw rod 14, the end part of the guiding pipe 16 is provided with a transmission connecting hole 17, an end puller 2 is arranged on the gearbox cover I in a split mode, and the outer end of the end puller 2 is provided with a mounting hole 7. The gearbox cover 1 is provided with a through hole, the body of the end puller is cylindrical in shape fitting to the through hole of the gearbox cover, the part of the end puller corresponding to the inner end of the through hole is provided with a limit end having a larger size than the diameter of the through hole for preventing the end puller from being pulled out of the through hole of the gearbox cover, the limit end is a limit pin which is vertically connected with the axis of the end puller, the part of the end puller corresponding to the outer end of the through hole of the gearbox cover is provided an external thread, a locking nut fits to the external thread of the end puller, and the outer end of the end puller is provided with the mounting hole. The circumferential end surface of the inner end of the through hole of the gearbox cover is provided with a plurality of limit grooves capable of fitting to the limit pin.
When the electric push rod is mounted, referring to FIG 5, the locking nut is loosened from the external thread of the end puller, the end puller 2 is pushed a distance towards the inner end of the through hole of the gearbox cover so as to pull the limit pin of the limit end of the end puller out of the limit groove of the inner end of the through hole of the gearbox cover, the mounting hole 7 of the end puller 2 is rotated to a required angle for mounting relative to the transmission connecting hole 17 at the front end of the guiding pipe 16 and then is drawn outwardly a distance to fit the limit pin of the limit end of the end puller to another limit groove of the inner end of the through hole of the gearbox cover, and the locking nut is tightly screwed with the external thread of the end puller to lock the relative position between the end puller and the gearbox cover for satisfying mounting requirements of different places.
Embodiment 4: referring to FIG 5, an electric push rod includes a motor 10 and a reduction gearbox 11. The reduction gear box 11 comprises a gearbox cover 1, a gearbox body 12 and a reduction gear 13 disposed in the space defined by the gearbox body 12 and the gearbox cover 1. The output end of the reduction gearbox 11 is a screw rod 14, the reduction gear 13 plays a role of gearing down between the output shaft 15 of the motor 10 and the screw rod 14, a guiding pipe 16 fitting to the screw rod 14 through an internal thread is arranged outside the screw rod 14, the end part of the guiding pipe 16 is provided with a transmission connecting hole 17, an end puller 2 is arranged on the gearbox cover 1 in a split mode, and the outer end of the end puller 2 is provided with a mounting hole 7. The gearbox cover is provided with a through hole, the body of the end puller is cylindrical in shape fitting to the through hole of the gearbox cover, the part of the end puller corresponding to the inner end of the through hole is provided with a limit end which is a truncated cone having a diameter greater than a diameter of the cylindrical part of the end puller body, the end surface of the truncated cone adjacent to the inner surface of the gearbox cover is provided with movable end surface teeth, and correspondingly, the inner surface of the gearbox cover is provided with fixed end surface teeth fitting to the movable end surface teeth on the truncated cone along the circumference of the through hole. The size of the limit end is greater than the diameter of the through hole so as to prevent the end puller from being pulled out of the through hole of the gearbox cover, the part of end puller corresponding to the outer end of the through hole of the gearbox cover is provided with an external thread, a locking nut fits to the external thread of the end puller, and the outer end of the end puller is provided with the mounting hole.
When the electric push rod is mounted, referring to FIG. 5, the locking nut is loosened from the external thread of the end puller, the end puller 2 is pushed a distance towards the inner end of the through hole of the gearbox cover so as to separate the movable end surface teeth on the truncated cone of the end puller from the fixed end surface teeth of the inner end of the through hole of the gearbox cover, the mounting hole 7 of the end puller 2 is rotated to a required angle for mounting relative to the transmission connecting hole 17 at the front end of the guiding pipe 16 and then is drawn outwardly a distance to engage the movable end surface teeth on the truncated cone of the end puller with the fixed end surface teeth of the inner end of the through hole of the gearbox cover, and the locking nut is tightly screwed with the external thread of the end puller to lock the relative position between the end puller and the gearbox cover for satisfying mounting requirements of different places.
Claims (7)
1. An electric push rod convenient for mounting, comprising:
a motor;
a reduction gearbox comprising a gearbox cover, the gearbox cover having an interior and a through hole with a through hole diameter;
the interior of the gearbox cover further including a ring concentric with the through hole, the ring having a larger diameter than the through hole diameter, and having a grooved interior;
an end puller separate from the gearbox cover and having a cylindrical portion, a threaded portion, and a limit end, with both of the cylindrical portion and the threaded portion having diameters smaller than the through hole diameter, while the limit end has a diameter larger than the through hole diameter to prevent the end puller from passing through the through hole; and the cylindrical portion of the end puller being provided with a transverse mounting hole;
wherein the limit end is registrable with the grooved interior of the raised ring at a plurality of orientations rotated about the axis of the raised ring, allowing the transverse mounting hole to be positioned at a plurality of angles relative to the gearbox cover; and a locking nut is provided to engage the threaded portion of the end puller and to lock the end puller in place.
a motor;
a reduction gearbox comprising a gearbox cover, the gearbox cover having an interior and a through hole with a through hole diameter;
the interior of the gearbox cover further including a ring concentric with the through hole, the ring having a larger diameter than the through hole diameter, and having a grooved interior;
an end puller separate from the gearbox cover and having a cylindrical portion, a threaded portion, and a limit end, with both of the cylindrical portion and the threaded portion having diameters smaller than the through hole diameter, while the limit end has a diameter larger than the through hole diameter to prevent the end puller from passing through the through hole; and the cylindrical portion of the end puller being provided with a transverse mounting hole;
wherein the limit end is registrable with the grooved interior of the raised ring at a plurality of orientations rotated about the axis of the raised ring, allowing the transverse mounting hole to be positioned at a plurality of angles relative to the gearbox cover; and a locking nut is provided to engage the threaded portion of the end puller and to lock the end puller in place.
2. The electric push rod of claim 1, wherein the limit end of the end puller has an external regular polygonal shape.
3. The electric push rod of claim 2, wherein the grooved interior of the raised ring has a contour of a plurality of concentric internal regular polygonal shapes, where each of the plurality of concentric internal regular polygonal shapes corresponds to the external regular polygonal shape of the limit end of the end puller.
4. The electric push rod of claim 2 or claim 3, wherein the external regular polygonal shape of the limit end has between three and eight sides.
5. The electric push rod of claim 1, wherein the limit end of the end puller has an external ring gear shape, and wherein the grooved interior of the raised ring has an internal ring gear shape dimensioned to fit the external ring gear limit end of the end puller.
6. The electric push rod of claim 1, wherein the limit end of the end puller is a limit pin with an axis identical to the cylindrical portion of the end puller, wherein the grooved interior of the raised ring includes a plurality of limit grooves.
7. The electric push rod of claim 1, wherein the limit end of the end puller is a truncated cone having a base with a diameter greater than the diameter of the cylindrical portion of the end puller, the base of the truncated cone having end surface teeth, wherein the grooved interior of the raised ring is provided with cooperating end surface teeth.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100629427A CN101388579A (en) | 2008-07-14 | 2008-07-14 | Motor push rod convenient for mounting |
| CN200810062942.7 | 2008-07-14 | ||
| PCT/CN2009/070775 WO2010006518A1 (en) | 2008-07-14 | 2009-03-13 | Electric push rod convenient for mounting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2729573A1 CA2729573A1 (en) | 2010-01-21 |
| CA2729573C true CA2729573C (en) | 2016-04-12 |
Family
ID=40477819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2729573A Active CA2729573C (en) | 2008-07-14 | 2009-03-13 | Electric push rod convenient for mounting |
Country Status (6)
| Country | Link |
|---|---|
| KR (1) | KR101184441B1 (en) |
| CN (1) | CN101388579A (en) |
| AU (1) | AU2009270385B2 (en) |
| CA (1) | CA2729573C (en) |
| MY (1) | MY165261A (en) |
| WO (1) | WO2010006518A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011057631A1 (en) * | 2009-11-13 | 2011-05-19 | Linak A/S | Linear actuator |
| CN103307246B (en) * | 2013-07-02 | 2015-08-12 | 北京联合大学 | Stroke-adjustable push rod mechanism |
| KR101918328B1 (en) | 2014-07-25 | 2018-11-13 | 현대중공업 주식회사 | Push Rod Cover of Engine |
| KR102169207B1 (en) | 2015-03-17 | 2020-10-22 | 현대중공업 주식회사 | Valve Of Inner Push Road |
| CN106988639A (en) * | 2017-05-31 | 2017-07-28 | 芜湖莫森泰克汽车科技股份有限公司 | A kind of electronic pole structure of automobile tail gate |
| CN108599456B (en) * | 2018-05-23 | 2024-10-18 | 浙江捷昌线性驱动科技股份有限公司 | Tail-pulling reversing structure and linear actuator |
| CN110605682A (en) * | 2019-09-11 | 2019-12-24 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Plunger pump valve seat puller |
| CN111795285B (en) * | 2020-07-13 | 2021-12-07 | 商彩科技(深圳)有限公司 | Intelligent screen projection device based on Internet of things |
| CN113328567A (en) * | 2021-06-08 | 2021-08-31 | 台州瑞地传动股份有限公司 | Method for manufacturing electric push rod |
| KR102609812B1 (en) * | 2021-10-08 | 2023-12-05 | 주식회사 케이엘티 | Lubricant injector |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10127008A (en) | 1996-10-15 | 1998-05-15 | Kishi Eng Kk | Electric cylinder |
| TW364367U (en) | 1998-12-31 | 1999-07-11 | Jeng-Huei Ke | Structure of transmission tortion adjustment |
| JP4732207B2 (en) * | 2006-03-23 | 2011-07-27 | 株式会社ホンダロック | Actuator |
| CN2909675Y (en) * | 2006-03-29 | 2007-06-06 | 许晓华 | Push-bar electric machine |
-
2008
- 2008-07-14 CN CNA2008100629427A patent/CN101388579A/en active Pending
-
2009
- 2009-03-13 KR KR1020107027547A patent/KR101184441B1/en active IP Right Grant
- 2009-03-13 WO PCT/CN2009/070775 patent/WO2010006518A1/en active Application Filing
- 2009-03-13 AU AU2009270385A patent/AU2009270385B2/en not_active Ceased
- 2009-03-13 CA CA2729573A patent/CA2729573C/en active Active
- 2009-03-13 MY MYPI2010006166A patent/MY165261A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN101388579A (en) | 2009-03-18 |
| MY165261A (en) | 2018-03-15 |
| WO2010006518A1 (en) | 2010-01-21 |
| CA2729573A1 (en) | 2010-01-21 |
| AU2009270385B2 (en) | 2015-03-19 |
| KR101184441B1 (en) | 2012-09-20 |
| AU2009270385A1 (en) | 2010-01-21 |
| KR20110015617A (en) | 2011-02-16 |
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