WO2010006518A1

WO2010006518A1 - Electric push rod convenient for mounting

Info

Publication number: WO2010006518A1
Application number: PCT/CN2009/070775
Authority: WO
Inventors: 闵青; 冯友才
Original assignee: 许晓华
Priority date: 2008-07-14
Filing date: 2009-03-13
Publication date: 2010-01-21
Also published as: CN101388579A; CA2729573A1; AU2009270385A1; KR20110015617A; CA2729573C; MY165261A; KR101184441B1; AU2009270385B2

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

Easy to install electric push rod

Technical field

The invention relates to an electric push rod which is easy to install and belongs to the technical field of electric push rods.

technical background

The function of the electric push rod is to provide a linear drive for the mechanism of some devices. When installing, the electric push rod is used to fix and fix the electric push rod through the tail pull on the reducer, and the drive connecting hole at the front end of the electric push rod is The linear motion mechanism connection of the device acts as a drive. In the prior art, the tail pull is generally integrated with the decelerated cover, so that the relative angle between the mounting hole on the tail puller and the front end drive connecting hole of the duct is determined, and the device is used for mounting the electric push rod. The relative angle between the mounting hole of the mounting portion and the connecting hole of the linear motion mechanism is also determined, so if the relative angle between the mounting hole on the tail of the electric push rod and the driving connection hole of the front end of the catheter and the mounting portion are installed, The inconsistent angle between the hole and the linear motion mechanism may result in the electric push rod being unable to be installed, resulting in inconvenience in installation.

Summary of the invention

The object of the present invention is to provide an electric push rod which can adjust the relative angle between the mounting hole on the tail puller and the front end drive connecting hole of the catheter to adapt to the installation of different occasions, and solve the existing tail of the prior art. The relative angle between the mounted mounting hole and the front end drive connecting hole of the conduit is determined, and the relative angle between the mounting hole of the mounting portion of the device for mounting the electric push rod and the connecting hole of the linear motion mechanism is also determined. Therefore, if the relative angle between the mounting hole on the tail of the electric push rod and the drive connecting hole of the front end of the duct and the relative angle between the mounting hole of the mounting portion and the linear motion mechanism are inconsistent, the electric push rod cannot be caused. Installation, resulting in inconvenience in installation and other issues. The above technical object of the present invention is mainly solved by the following technical solutions: it comprises a motor part and a reduction box part, the reduction box part comprises a reduction box cover and a tail pull, the reduction case cover and the tail pull are a split structure, a reduction box The cover is provided with a through hole, and the tail pull body has a cylindrical shape matched with the through hole of the reduction cover, and the tail pull is located at the inner end of the through hole of the reduction cover and is provided with a limit end, and the limit end can limit the tail pull from decelerating The through hole of the box cover is pulled out, and the tail pull corresponding to the outer end of the through hole of the reduction box cover is formed with an external thread, the lock nut is matched with the external thread of the tail pull, and the outer end of the tail pull is provided with a mounting hole, and the tail end is pulled The matching of the limiting end and the inner end of the through hole of the reduction box cover can fix a plurality of relative angular positions between the mounting hole on the tail pull and the reduction cover. The invention designs the component structure of the tail pull and the reduction box cover, and provides a through hole matched with the tail pull on the reduction box cover, and realizes the tail pull by the cooperation of the tail end limit end and the inner end of the through hole of the reduction box cover. A plurality of angle adjustments are realized between the through holes of the reduction box cover, and the relative positions between the tail pull and the through hole of the reduction cover cover are locked by the lock nut and the external thread of the tail pull, thereby achieving the mounting hole on the tail pull. The angle adjustment between the driving connection hole of the front end of the electric push rod duct can meet the installation requirements of different installation occasions, and the installation convenience of the invention is improved.

Preferably, the limiting end is an outer regular polygonal structure, and the inner end of the through hole of the reduction box cover is provided with at least one inner regular polygonal groove which can cooperate with the outer regular polygonal structure of the limiting end. When mediation is required, loosen the lock nut and the external thread of the tail pull, and pull the tail to the inner end of the through hole of the reduction cover to push a certain distance, so that the outer regular polygonal structure of the tail end limit end is passed from the reduction cover The inner regular polygonal groove of the inner end of the hole is disengaged, and the tail pull is rotated relative to the through hole to the angle required for installation, and then the tail is pulled outward to a certain distance, so that the outer regular polygonal structure of the tail end limit end is connected to the reduction box cover. The inner regular polygonal groove of the inner end of the hole is matched, and then the locking nut and the external thread of the tail pull are tightened to lock the relative position between the tail pull and the speed reducer cover, so as to adapt to the installation needs of different occasions.

Preferably, the inner end of the through hole of the reduction box cover is provided with a plurality of inner regular polygonal grooves which are concentric and can respectively cooperate with the outer regular polygonal structure of the limiting end, and the plurality of inner regular polygonal grooves are arranged in a circumferential direction offset. Wherein, a plurality of outer regular polygonal grooves are arranged at the inner end of the through hole of the reduction cover, and they are dislocated, so that the tail pull and the reduction cover cover have more positions in the circumferential direction of the through hole. Therefore, the adjustment between the tail pull and the drive connecting hole of the front end of the electric push rod guide is improved, and the installation of the electric push rod is more convenient, so as to adapt to the installation needs of more different occasions.

Preferably, the outer regular polygonal structure has three to eight sides, and the inner regular polygonal groove corresponds to the outer regular polygonal structure.

Preferably, the limiting end is an outer ring gear structure, and the inner circumference of the through hole of the reduction box cover is provided with an inner ring gear structure matched with the outer ring gear. When mediation is required, loosen the lock nut and the external thread of the tail pull, and pull the tail to the inner end of the through hole of the reduction gear cover to push a certain distance, so that the outer ring gear structure of the tail end limit end is open from the gear cover cover. The inner ring gear of the inner end of the hole is disengaged in the inner ring, and the tail pull is rotated relative to the through hole to the angle required for installation, and then the tail pulls out a certain distance, so that the outer ring gear structure of the tail end limit end and the reduction box cover The inner ring gear of the inner end of the through hole is matched with the structure, and then the locking nut and the external thread of the tail pull are tightened to lock the relative position between the tail pull and the speed reducer cover, so as to adapt to the installation needs of different occasions.

Preferably, the limiting end is a limiting pin vertically connected to the tail pull axis, and the inner end end surface of the through hole of the reduction box cover is provided with a plurality of limiting slots which can cooperate with the limiting pin. When mediation is required, loosen the lock nut and the tail pull external thread, and pull the tail to the inner end of the through hole of the reduction cover to push a certain distance, so that the limit pin of the tail end limit end is from the through hole of the reduction cover The inner end of the limiting slot is disengaged, and the tail pull is rotated relative to the through hole to the angle required for installation, and then the tail pull is pulled outward to a certain distance, so that the limit pin of the tail end limit end and the inner end of the through hole of the reduction box cover are The other limit groove is matched, and then the lock nut and the external thread of the tail pull are tightened to lock the relative position between the tail pull and the speed reducer cover, so as to adapt to the installation requirements of different occasions.

Preferably, the limiting end is a circular table having a diameter larger than a diameter of a cylindrical portion of the tail pull body, and an end surface of the circular table adjacent to the inner surface of the reduction cover is provided with moving end teeth, correspondingly in the reduction cover The surface is provided with static face teeth that are matched with the upper moving face teeth in the garden along the circumference of the through hole. Wherein, the moving end face finger means that the tail pull can rotate relative to the speed reducer cover, and the static end face tooth refers to the tail pull rotation The gearbox cover is in a stationary state. When mediation is required, loosen the lock nut and the external thread of the tail pull, and pull the tail to the inner end of the through hole of the reduction cover to push a certain distance, so that the movable end face on the tail pull table and the through hole of the reduction cover cover The inner end of the static end face teeth are meshed apart, and the tail pull is rotated relative to the through hole to the angle required for installation, and then the tail pull is pulled outward to a certain distance, so that the moving end face teeth on the tail pull round table and the through hole of the reduction cover cover The inner end of the static face tooth engagement, and then tighten the lock nut and the tail pull external thread to lock the relative position between the tail pull and the gearbox cover, to meet the installation needs of different occasions.

Therefore, the present invention has the characteristics of adjusting the relative angle between the mounting hole on the tail puller and the driving connection hole of the front end of the duct to suit the installation requirements of different occasions.

DRAWINGS

1 is a schematic exploded view of a reduction cover and a tail pull of the present invention;

2 is a schematic plan view showing a reduction gear cover of the present invention;

3 is a schematic view showing a three-dimensional assembly structure of a reduction cover and a tail pull of the present invention;

4 is a schematic view showing a planar assembly structure of a reduction cover and a tail pull of the present invention;

Figure 5 is a schematic view of the structure of the present invention.

detailed description

The technical solutions of the present invention will be further specifically described below by way of embodiments and with reference to the accompanying drawings.

Embodiment 1: As shown in FIG. 5, the electric push rod includes a motor portion 10 and a reduction box portion 11, and the reduction box portion 11 includes a cover 1, which is disposed in a space formed by the case 12 and the cover 1. The reduction gear 13 and the output end of the reduction gear box portion 1 are a screw rod 14. The reduction gear 13 functions as a reduction transmission between the output shaft 15 of the motor portion 10 and the screw rod 14, and the screw rod 14 is provided with a through screw. The end of the duct 16 is provided with a transmission connecting hole 17, and the box cover 1 is provided with a tail pull 2 which is separated from the lead rod 2, and the outer end of the tail pull 2 has a mounting hole 7 as shown in the figure. 1. As shown in FIG. 2, FIG. 3 and FIG. 4, the reduction box cover 1 is provided with a through hole 3, and the tail drawn body has a cylindrical shape matching the through hole 3 of the reduction cover 1 and the tail pull 2 is located at the reduction cover. The inner end of the through hole 3 is provided with a limiting end 4, and the size of the limiting end 4 is larger than the aperture of the through hole 3, so that the tail pull 2 can be restricted from being pulled out from the through hole 3 of the reduction cover 1, the circumferential direction of the limiting end 4 The contour forms an outer regular hexagonal structure 9, and the tail pull 2 is formed with an external thread 5 corresponding to the outer end of the through hole 3 of the reduction cover 1, and the lock nut 6 is engaged with the external thread 5 of the tail pull 2. The inner end of the through hole 3 of the reduction box cover 1 is provided with two inner hexagonal grooves 8 which are concentric and can respectively cooperate with the outer regular hexagonal structure of the limiting end. The two inner hexagonal grooves 8 are in the wrong direction in the circumferential direction. 30° setting.

When the electric push rod is installed, as shown in FIG. 3 and FIG. 5, the lock nut 6 and the tail pull external thread 5 are loosened, and the tail pull 2 is pushed to the inner end of the through hole of the reduction cover to a certain distance, so that The outer regular hexagonal structure of the tail end 2 of the tail pull 2 is disengaged from the inner hexagonal groove of the inner end of the through hole of the reduction cover, and the mounting hole 7 of the tail pull 2 is rotated relative to the drive connection hole 17 of the front end of the duct 16 to be mounted. After the required angle, the tail pulls out a certain distance, so that the outer regular hexagonal structure of the tail end limit end fits with the inner hexagonal groove at the inner end of the through hole of the reduction box cover, and then the lock nut and the tail pull are pulled. Tighten the external threads to lock the relative position between the tail pull and the gearbox cover to suit the installation needs of different occasions.

Embodiment 2: As shown in FIG. 5, the electric push rod includes a motor portion 10 and a reduction box portion 11, and the reduction box portion 11 includes a cover 1, which is disposed in a space formed by the case 12 and the cover 1. The reduction gear 13 and the output end of the reduction gear box portion 1 are a screw rod 14. The reduction gear 13 functions as a reduction transmission between the output shaft 15 of the motor portion 10 and the screw rod 14. The screw rod 14 is provided with an internal thread and a wire. The rod 16 is matched with the rod 16, the end of the tube 16 is provided with a transmission connecting hole 17, the box cover 1 is provided with a tail pull 2 separated therefrom, and the outer end of the tail pull 2 has a mounting hole 7, and the reduction box cover is provided The utility model has a through hole, and the tail pull body has a cylindrical shape matched with the through hole of the reduction box cover, and the tail pull is located at the inner end of the through hole of the reduction box cover, and the limit end is provided, and the size of the limit end is larger than the aperture of the through hole to limit the tail Pulling out from the through hole of the reduction cover, the limit end is an outer ring gear structure, and the tail pull corresponds to the outer end of the through hole of the reduction cover The part is formed with an external thread, the lock nut is matched with the external thread of the tail pull, and the outer end of the tail pull is provided with a mounting hole. The inner end of the through hole of the reduction box cover is provided with an inner ring gear structure that cooperates with the outer ring gear structure of the tail end limit end.

When installing the electric push rod, as shown in Figure 5, loosen the lock nut and the external thread of the tail pull, and pull the tail to the inner end of the through hole of the reduction box cover to push a certain distance, so that the tail end of the limit end is The ring gear structure is disengaged from the inner ring gear structure of the inner end of the through hole of the reduction box cover, and the mounting hole 7 of the tail pull 2 is rotated relative to the transmission connection hole 17 of the front end of the duct 16 to the angle required for installation, and then the tail pull is pulled. Pull out a certain distance outward, so that the outer ring gear structure of the tail end limit end fits with the inner ring gear structure of the inner end of the through hole of the reduction box cover, and then tighten the lock nut and the external thread of the tail pull to lock the tail pull and The relative position between the gearbox covers can be adapted to the installation needs of different occasions.

Embodiment 3: As shown in FIG. 5, the electric push rod includes a motor portion 10 and a reduction box portion 11, and the reduction box portion 11 includes a cover 1, which is disposed in a space formed by the case 12 and the cover 1. The reduction gear 13 and the output end of the reduction gear box portion 1 are a screw rod 14. The reduction gear 13 functions as a reduction transmission between the output shaft 15 of the motor portion 10 and the screw rod 14. The screw rod 14 is provided with an internal thread and a wire. The rod 16 is matched with the rod 16, the end of the tube 16 is provided with a transmission connecting hole 17, the box cover 1 is provided with a tail pull 2 separated therefrom, and the outer end of the tail pull 2 has a mounting hole 7, and the reduction box cover is provided Have a pass? L, the tail pull body is in a cylindrical shape matching the through hole of the reduction box cover, and the tail pull is located at the inner end of the through hole of the reduction box cover and has a limit end, and the size of the limit end is larger than the aperture of the through hole, thereby limiting the tail pull from The through hole of the reducer cover is pulled out, and the limit end is a limit pin vertically connected with the tail pull axis, and the tail pull corresponding to the outer end of the through hole of the reduction cover is formed with an external thread, the lock nut and the tail pull The external thread is matched, and the outer end of the tail pull is provided with a mounting hole. The inner end surface of the through hole of the reduction box cover is provided with a plurality of limiting slots which can be matched with the limiting pins.

When installing the electric push rod, as shown in Figure 5, loosen the lock nut and the external thread of the tail pull, and pull the tail to the inner end of the through hole of the reduction box cover to push a certain distance, so as to limit the limit end of the tail pull. Position pin from deceleration The inner end of the through hole of the cover cover is disengaged, and the mounting hole 尾 of the tail pull 2 is rotated relative to the drive connecting hole 17 of the front end of the duct 16 to the angle required for installation, and then the tail pulls out and is pulled out. Distance, so that the limit pin of the tail end limit end fits with the other limit groove of the inner end of the through hole of the reduction box cover, and then tightens between the lock nut and the external thread of the tail pull to lock between the tail pull and the reduction cover The relative position can be adapted to the installation needs of different occasions.

Embodiment 4: As shown in FIG. 5, the electric push rod includes a motor portion 10 and a reduction box portion 11, and the reduction box portion 11 includes a box cover 1 which is disposed in a space formed by the box body 12 and the box cover 1. The reduction gear 13 and the output end of the reduction gear box portion 1 are a screw rod 14. The reduction gear 13 functions as a reduction transmission between the output shaft 15 of the motor portion 10 and the screw rod 14. The screw rod 14 is provided with an internal thread and a wire. The rod 16 is matched with the rod 16, the end of the tube 16 is provided with a transmission connecting hole 17, the box cover 1 is provided with a tail pull 2 separated therefrom, and the outer end of the tail pull 2 has a mounting hole 7, and the reduction box cover is provided The utility model has a through hole, and the tail pull body has a cylindrical shape matched with the through hole of the reduction box cover, and the tail pull is located at the inner end of the through hole of the reduction box cover, and the limit end is a diameter larger than the cylindrical portion of the tail pull body. a circular table having a diameter, the end surface adjacent to the inner surface of the reduction box cover is provided with movable end face teeth, and correspondingly, a static end face is provided on the inner surface of the reduction gear cover along the circumference of the through hole with the upper movable tooth surface in the garden tooth. The size of the limiting end is larger than the aperture of the through hole, so that the tail pull can be restricted from being pulled out from the through hole of the reduction cover, and the external end of the through hole corresponding to the outer end of the reduction cover is formed with the external thread, the lock nut and the tail pull. The external thread is matched, and the outer end of the tail pull is provided with a mounting hole.

When installing the electric push rod, as shown in Figure 5, loosen the lock nut and the external thread of the tail pull, and pull the tail to the inner end of the through hole of the reduction box cover to push a certain distance, so that the tail pulls the movement on the round table. The face tooth is separated from the static face tooth of the inner end of the through hole of the reduction cover, and the mounting hole 7 of the tail pull 2 is rotated relative to the drive connection hole 17 of the front end of the pipe 16 to the angle required for installation, and then the tail is pulled Pull out a certain distance, so that the moving end face teeth on the tail pull round table mesh with the static end face teeth of the inner end of the through hole of the reduction gear cover, and then tighten the lock nut and the external thread of the tail pull to lock the tail pull and slow down. The relative position between the cover can be adapted to the installation needs of different occasions.

Claims

Claim

1. An electric push rod for easy installation, comprising a motor part and a reduction box part, wherein the reduction box part comprises a reduction box cover and a tail pull, wherein the reduction box cover and the tail pull are separated structures, and the reduction box cover is The utility model is provided with a through hole, and the tail pull body has a cylindrical shape matched with the through hole of the speed reducer cover, and the tail pull is located at the inner end of the through hole of the reduction cover, and the limit end is arranged, and the limit end can limit the tail pull from the speed reducer cover The through hole is pulled out, and the tail pull corresponding to the outer end of the through hole of the reduction box cover is formed with an external thread, the lock nut is matched with the external thread of the tail pull, and the outer end of the tail pull is provided with a mounting hole, and the tail pull limit is adopted. The engagement of the end with the inner end of the through hole of the reduction case cover can fix a plurality of relative angular positions between the mounting hole on the tail pull and the reduction cover.

2. The electric push rod for easy installation according to claim 1, wherein the limiting end is an outer regular polygonal structure, and the inner circumference of the through hole of the reduction box cover is provided with at least one end and a limiting end. The inner regular polygon groove with the outer regular polygon structure.

3. The electric push rod for easy installation according to claim 2, wherein the inner end of the through hole of the reduction box cover is provided with a plurality of inner cores which are concentric and can respectively cooperate with the outer regular polygonal structure of the limit end. a polygonal groove, wherein the plurality of inner regular polygonal grooves are offset in a circumferential direction.

4. The easy-to-install electric push rod according to claim 2 or 3, wherein the outer regular polygonal structure has three to eight sides, and the inner regular polygonal groove corresponds to the outer regular polygonal structure.

The electric push rod for easy installation according to claim 1, wherein the limiting end is an outer ring gear structure, and the inner circumference of the through hole of the reduction box cover is provided with an inner ring ring. Ring gear structure.

6. The easy-to-install electric pusher of claim 1 wherein said limit The end is a limit pin connected perpendicularly to the tail pull axis, and the inner end surface of the inner end of the through hole of the reduction box cover is provided with a plurality of limiting slots that can cooperate with the limit pins.

7. The easy-to-install electric push rod according to claim 1, wherein the limit end is a circular table having a diameter larger than a diameter of a cylindrical portion of the tail pull body, the round table being adjacent to an inner surface of the reduction cover cover. The end face is provided with movable face teeth, and correspondingly, on the inner surface of the reduction cover, a static face tooth that cooperates with the upper movable face tooth in the garden is provided along the circumference of the through hole.