CN212183300U

CN212183300U - Electric push rod

Info

Publication number: CN212183300U
Application number: CN202020964463.0U
Authority: CN
Inventors: 倪晓丹; 倪星河; 蔡斌
Original assignee: Wenzhou Lingfeng Industrial Foreign Trade Ltd
Current assignee: Wenzhou Lingfeng Industrial Foreign Trade Ltd
Priority date: 2020-05-30
Filing date: 2020-05-30
Publication date: 2020-12-18
Anticipated expiration: 2030-05-30

Abstract

The utility model relates to the technical field of drivers, and discloses an electric push rod, which comprises a drive motor, a reduction gearbox rotationally connected with the drive motor, a screw rotationally connected with the reduction gearbox, a drive nut in threaded connection outside the screw and a metal sleeve sleeved outside the screw, wherein one side of the metal sleeve is connected with a supporting block for limiting the rotation of the metal sleeve; a stop ring is fixed at one end of the screw rod, which is far away from the reduction gearbox, a stop nut is in threaded connection, a stop ring sleeved outside the screw rod is arranged between the stop ring and the stop nut, and the outer wall of the stop ring is attached to the inner wall of the metal sleeve. The utility model discloses beat metal sleeve, the stable effect of metal sleeve operation when having and to avoid the screw rod to rotate.

Description

Electric push rod

Technical Field

The utility model belongs to the technical field of the technique of driver and specifically relates to an electric putter is related to.

Background

The electric push rod is an electric drive device which converts the rotary motion of a motor into the linear reciprocating motion of the push rod, can be used as an execution machine in various simple or complex process flows to realize remote control, centralized control or automatic control, and is mainly used as a motion drive unit in the industries of household appliances, kitchen ware, medical appliances, automobiles and the like.

In the prior art, as shown in fig. 1, an electric push rod includes a driving motor 1, a screw rod 3, a driving nut 4, a metal sleeve 5 and a supporting block 6, the screw rod 3 is fixedly connected to an output shaft of the driving motor 1, the driving nut 4 is in threaded connection with an outer side of the screw rod 3, the metal sleeve 5 is sleeved on the outer side of the screw rod 3 and is fixedly connected to the driving nut 4, and the supporting block 6 is connected to an end of the screw rod 3 and is used for preventing the metal sleeve 5 from rotating. When the device works, the driving motor 1 firstly drives the screw rod 3 to rotate, and then the driving nut 4 drives the metal sleeve 5 to do linear motion.

The above prior art solutions have the following drawbacks: the screw rod is because the influence of dead weight is swung to both sides easily when rotating to the metal casing pipe of establishing in the screw rod outside to the cover produces to beat the striking, makes metal casing pipe destroyed, can produce harmful effects to metal casing pipe's operating stability when serious, leads to electric putter's quality to reduce, awaits improving.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing an electric putter has and beats metal sleeve, the stable effect of metal sleeve operation when can avoiding the screw rod to rotate.

The above object of the present invention can be achieved by the following technical solutions: an electric push rod comprises a driving motor, a reduction gearbox rotationally connected with the driving motor, a screw rotationally connected with the reduction gearbox, a driving nut in threaded connection with the outer side of the screw and a metal sleeve sleeved on the outer side of the screw, wherein one side of the metal sleeve is connected with a supporting block for limiting the rotation of the metal sleeve; the screw rod is fixed with the fender ring, threaded connection has lock nut far away from the one end of reducing gear box, lock nut is located the fender ring and keeps away from one side of reducing gear box, be equipped with the check ring that the cover is established in the screw rod outside between fender ring and the lock nut, the outer wall laminating of check ring is on metal casing's inner wall.

Through adopting above-mentioned technical scheme, when assembling the check ring, split arc piece and drive nut earlier, embolia the screw rod with the check ring again and with keeping off the ring butt, with stop nut threaded connection on the screw rod after that for the check nut laminating keeps away from the one side that keeps off the ring at the check ring, thereby restriction check ring swing, connects arc piece and drive nut, installed part through the fastener at last and connects two arc pieces. The stop ring is attached to the inner side of the metal sleeve and plays a role in supporting and blocking, the gap between the stop ring and the metal sleeve is small, the metal sleeve cannot be knocked when the screw rod rotates, the metal sleeve operates stably, and the quality of the electric push rod is high. The arc piece and the driving nut can be detached, and the effect of conveniently assembling the stop ring is achieved.

The utility model discloses further set up to: the opposite end faces of the two arc sheets are provided with arc grooves which extend along the length direction of the arc sheets and have the same depth, and the outer wall of the stop ring is attached to the inner wall of each arc groove.

Through adopting above-mentioned technical scheme, when metal casing moved along the length direction of screw rod, the check ring can move and play direction and spacing effect along the arc wall, stability when not only having improved metal casing and removing, can also restrict metal casing and drive nut and screw rod separation. In addition, the arrangement of the arc-shaped groove also increases the contact area of the stop ring and the metal sleeve, and the support effect of the stop ring is improved.

The utility model discloses further set up to: the inner wall of the arc-shaped groove is provided with a butt block in an integrated manner at one end close to the reduction gearbox, and the end face of the butt block close to the screw is a concave arc face attached to the outer side of the screw.

Through adopting above-mentioned technical scheme, the butt piece makes between screw rod and the metal casing more than receive the supporting role of retaining ring, has weakened the collision dynamics of retaining ring and metal casing, stability when further having improved the metal casing and removing.

The utility model discloses further set up to: and one end of the screw rod, which is far away from the reduction gearbox, is provided with a rubber ring positioned between the stop ring and the stop nut, and the stop ring is tightly pressed on the outer side of the rubber ring.

Through adopting above-mentioned technical scheme, the snap ring moves to and can extrude the rubber circle and make its deformation when keeping off the ring butt to stability when improving snap ring and screw rod and being connected.

The utility model discloses further set up to: one end of the rubber ring, which is far away from the baffle ring, is provided with a guide cambered surface, and the outer diameter of the guide cambered surface is gradually reduced on one side, which is far away from the baffle ring.

Through adopting above-mentioned technical scheme, the effect of direction is played when the retaining ring removes to the direction cambered surface, and assembly efficiency is high.

The utility model discloses further set up to: the installed part comprises installation blocks which are integrally formed on two sides of the arc sheet, installation bolts which are arranged in the two installation blocks on the same side of the arc sheet in a penetrating mode, and installation nuts which are connected to the installation bolts in a threaded mode.

Through adopting above-mentioned technical scheme, during the assembly metal casing, align respectively with the installation piece of two arc piece butts and make its both sides earlier, pass two installation piece backs and mounting nut threaded connection of arc piece homonymy with mounting bolt again to make two arc pieces fuse, convenient operation and joint strength height.

The utility model discloses further set up to: sealing gaskets are fixed on the opposite end faces of the two mounting blocks positioned on the same side of the arc sheet.

Through adopting above-mentioned technical scheme, sealed pad pressurized deformation and play sealed effect when the arc piece links to each other for external dust and moisture are difficult for getting into metal sleeve's inboard, and metal sleeve's inner wall and screw rod are difficult for rustting, long service life.

The utility model discloses further set up to: the end face of the driving nut close to the arc piece is provided with a yielding groove, the inner wall of the yielding groove is provided with a fastening hole communicated with the side wall of the driving nut, the fastening piece comprises a fastening block fixed at the bottom end of the arc piece and a fastening bolt penetrating through the fastening hole, and the end face of the fastening block close to the fastening hole is provided with a fastening screw hole matched with the fastening bolt in a threaded mode.

By adopting the technical scheme, when the arc sheet and the driving nut are connected, the fastening block firstly extends into the abdicating groove, and then the fastening bolt penetrates through the fastening hole and is in threaded connection with the fastening screw hole, so that the arc sheet is limited to be separated from the driving nut, and the operation is simple and convenient.

The utility model discloses further set up to: the stop nut is a nylon self-locking nut.

By adopting the technical scheme, the stop nut is a nylon self-locking nut, so that the stop nut is high in vibration resistance and looseness prevention performance and not easy to loosen after being installed in place.

To sum up, the utility model discloses a following at least one beneficial effect:

1. the stop ring and the abutting block are supported between the screw rod and the metal sleeve, so that the screw rod cannot impact the metal sleeve when rotating, the stability of the metal sleeve during operation is high, and the quality of the electric push rod is good; the stop ring and the stop nut are used for limiting the stop ring to move relative to the screw rod, so that the stability of the stop ring is improved;

2. the two arc sheets are connected through the mounting bolts penetrating through the mounting blocks on the same side, so that the mounting and dismounting are convenient; the sealing effect of the metal sleeve is improved by the sealing gasket; the arc sheet and the driving nut are detachably connected through the fastening bolt, so that the operation is convenient and the connection strength is high;

3. the rubber ring can be pressed and deformed when the stop ring moves to be abutted with the baffle ring, so that the stop ring is tightly extruded to limit the relative screw rod to move, the stability of the stop ring is improved, the guide cambered surface plays a role in guiding when the stop ring moves, and the assembly efficiency of the stop ring is improved.

Drawings

FIG. 1 is a schematic structural diagram of an electric putter in the background art;

FIG. 2 is a schematic structural diagram of the present embodiment;

FIG. 3 is a schematic sectional view of the present embodiment with the drive nut and the metal sleeve separated;

fig. 4 is an enlarged schematic view at a in fig. 3.

Reference numerals: 1. a drive motor; 2. a reduction gearbox; 3. a screw; 31. a baffle ring; 32. a rubber ring; 321. a guiding cambered surface; 33. a stop nut; 4. a drive nut; 41. a yielding groove; 42. a fastening hole; 5. a metal sleeve; 51. an arc sheet; 511. an arc-shaped slot; 512. a butting block; 513. a concave arc surface; 52. a mounting member; 521. mounting blocks; 522. installing a bolt; 523. mounting a nut; 524. a gasket; 6. a support block; 7. a fastener; 71. a fastening block; 711. fastening screw holes; 72. fastening a bolt; 8. a snap ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment discloses an electric push rod, as shown in fig. 2 and fig. 3, including driving motor 1, with driving motor 1 rotate the reducing gear box 2 of being connected, with reducing gear box 2 rotate the screw rod 3 of being connected, threaded connection is at the drive nut 4 and the metal sleeve 5 of cover in the screw rod 3 outside, the one end that metal sleeve 5 is close to reducing gear box 2 can be dismantled with drive nut 4 and be connected, the one end threaded connection that metal sleeve 5 kept away from reducing gear box 2 has supporting shoe 6, supporting shoe 6 not only can restrict metal sleeve 5 rotatory, still play the effect of supporting metal sleeve 5. When the screw rod driving device works, the screw rod 3 is rotated by the driving motor 1 after the speed reduction effect of the reduction box 2, and then the driving nut 4 drives the metal sleeve 5 to axially move relative to the screw rod 3.

As shown in fig. 2, the metal sleeve 5 includes two arc pieces 51 arranged oppositely and a mounting part 52 for connecting the two arc pieces 51, the cross section of the two arc pieces 51 is arc-shaped with equal inner diameter, and the metal sleeve 5 formed when the two arc pieces 51 are connected is hollow and cylindrical. The mounting member 52 includes mounting blocks 521 integrally formed on both sides of the arc piece 51, a plurality of mounting bolts 522 passing through the two mounting blocks 521 on the same side of the arc piece 51, and a mounting nut 523 screwed on the end of the mounting bolts 522, wherein gaskets 524 are fixed on the opposite end surfaces of the two mounting blocks 521 on the same side of the arc piece 51. When the metal sleeve 5 is assembled, the two arc pieces 51 are aligned to be spliced into a hollow cylinder, and then the mounting bolt 522 passes through the two mounting blocks 521 on the same side and is in threaded connection with the mounting nut 523, so that the two arc pieces 51 are limited to be separated.

As shown in fig. 2 and 3, each arc piece 51 is detachably connected with the driving nut 4 through a group of fastening pieces 7, the end face, close to the arc piece 51, of the driving nut 4 is provided with a yielding groove 41, the inner wall, far away from the screw rod 3, of the yielding groove 41 is provided with a fastening hole 42, and the fastening hole 42 is communicated with the outer wall of the driving nut 4. The fastening piece 7 comprises a fastening block 71 fixed at one end of the arc piece 51 close to the driving nut 4 and a fastening bolt 72 arranged in the fastening hole 42 in a penetrating way, wherein a fastening screw hole 711 is arranged at the end face of the fastening block 71 close to the fastening hole 42, and the fastening screw hole 711 is in threaded fit with the fastening bolt 72. When the arc piece 51 and the driving nut 4 are connected, the fastening block 71 is firstly inserted into the abdicating groove 41, and then the fastening bolt 72 is threaded with the fastening screw hole 711 after penetrating through the fastening hole 42, so that the operation is simple and convenient.

As shown in fig. 3 and 4, one end of the screw rod 3, which is far away from the reduction gearbox 2, is sequentially provided with a retaining ring 31, a rubber ring 32 and a stop nut 33, wherein the stop nut 33 is a nylon self-locking nut, the retaining ring 31 and the rubber ring 32 are both fixed on the outer wall of the screw rod 3, and the stop nut 33 is in threaded connection with the screw rod 3 and is located on one side of the retaining ring 31, which is far away from the reduction gearbox 2. A stop ring 8 is arranged between the stop ring 31 and the stop nut 33, and the stop ring 8 is sleeved on the outer side of the screw rod 3 and tightly extrudes the rubber ring 32. One end of the rubber ring 32 away from the retainer ring 31 is provided with a guide arc 321, and the outer diameter of the guide arc 321 gradually decreases away from one side of the retainer ring 31. When the stop ring 8 is assembled, the stop ring 8 contacts with the guide cambered surface 321 and gradually extrudes the rubber ring 32 until the stop ring 8 abuts against the baffle ring 31, and the guide cambered surface 321 plays a role in guiding when the stop ring 8 moves, so that the operation is convenient.

As shown in fig. 3 and 4, the two opposite end surfaces of the two arc pieces 51 are provided with arc grooves 511 with two closed ends and equal depths, the arc grooves 511 extend along the length direction of the arc pieces 51, the diameter of the bottom wall of the arc groove 511 is equal to the outer diameter of the stop ring 8, and the outer wall of the stop ring 8 is attached to the inner wall of the arc groove 511. The stop ring 8 is supported between the metal sleeve 5 and the screw rod 3, so that the metal sleeve 5 can be prevented from being impacted by factors such as self gravity when the screw rod 3 rotates, the stability of the metal sleeve 5 in operation is high, and the quality of the push rod is good.

As shown in fig. 3, the two arc pieces 51 are integrally formed with an abutting block 512 at one end close to the reduction gearbox 2, the abutting block 512 is located on the inner wall of the arc-shaped groove 511, and the end surface of the abutting block 512 close to the screw 3 is a concave arc surface 513 attached to the outer side of the screw 3. The support area between the metal sleeve 5 and the screw rod 3 is further increased by the abutting block 512, the support effect is good, and the stability of the metal sleeve 5 is high.

The implementation principle of the embodiment is as follows: when the screw rod driving device works, the screw rod 3 is rotated by the driving motor 1 after the speed reduction effect of the reduction box 2, so that the driving nut 4 drives the metal sleeve 5 to do linear motion along the length direction of the screw rod 3. When the screw rod 3 rotates, the stop ring 8 and the abutting block 512 are supported between the metal sleeve 5 and the screw rod 3, so that the effect of limiting the screw rod 3 from impacting the metal sleeve 5 is achieved, and the stability of the metal sleeve 5 in operation and the quality of the electric push rod are improved.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides an electric putter, includes driving motor (1), rotates reducing gear box (2) of being connected with the output shaft of driving motor (1), rotates screw rod (3) of being connected with reducing gear box (2), threaded connection drive nut (4) and the cover in screw rod (3) outside and establish metal sleeve (5) in the screw rod (3) outside, one side of metal sleeve (5) is connected with its rotatory supporting shoe (6) of restriction, its characterized in that: the metal sleeve (5) comprises two arc pieces (51) which are arranged oppositely and a mounting piece (52) used for connecting the two arc pieces (51), the two arc pieces (51) form a hollow cylinder shape when being connected, and the two arc pieces (51) are detachably connected with the driving nut (4) through a group of fastening pieces (7) respectively; one end, far away from the reduction gearbox (2), of the screw rod (3) is fixed with a retaining ring (31) and is in threaded connection with a stop nut (33), the stop nut (33) is located on one side, far away from the reduction gearbox (2), of the retaining ring (31), a stop ring (8) sleeved on the outer side of the screw rod (3) is arranged between the retaining ring (31) and the stop nut (33), and the outer wall of the stop ring (8) is attached to the inner wall of the metal sleeve (5).

2. An electric putter as claimed in claim 1, wherein: the opposite end surfaces of the two arc sheets (51) are provided with arc grooves (511) which extend along the length direction and have the same depth, and the outer wall of the stop ring (8) is attached to the inner wall of the arc grooves (511).

3. An electric putter as claimed in claim 2, wherein: one end, close to the reduction gearbox (2), of the inner wall of the arc-shaped groove (511) is integrally formed with a butting block (512), and the end face, close to the screw rod (3), of the butting block (512) is a concave arc face (513) attached to the outer side of the screw rod (3).

4. An electric putter as claimed in claim 1, wherein: one end of the screw rod (3) far away from the reduction gearbox (2) is provided with a rubber ring (32) positioned between the baffle ring (31) and the stop nut (33), and the stop ring (8) is tightly pressed on the outer side of the rubber ring (32).

5. An electric putter as claimed in claim 4, wherein: one end of the rubber ring (32) far away from the baffle ring (31) is provided with a guide cambered surface (321), and the outer diameter of the guide cambered surface (321) is gradually reduced on one side far away from the baffle ring (31).

6. An electric putter as claimed in claim 1, wherein: the mounting piece (52) comprises mounting blocks (521) which are integrally formed on two sides of the arc piece (51), mounting bolts (522) which are arranged in the two mounting blocks (521) on the same side of the arc piece (51) in a penetrating mode, and mounting nuts (523) which are connected to the mounting bolts (522) in a threaded mode.

7. An electric putter as claimed in claim 5, wherein: sealing gaskets (524) are fixed on the opposite end surfaces of the two mounting blocks (521) positioned on the same side of the arc sheet (51).

8. An electric putter as claimed in claim 1, wherein: the end face of drive nut (4) being close to arc piece (51) is equipped with groove (41) of stepping down, be equipped with on the inner wall of groove (41) of stepping down fastening hole (42) with the lateral wall intercommunication of drive nut (4), fastener (7) are including fixing fastening block (71) in arc piece (51) bottom and wearing to establish fastening bolt (72) in fastening hole (42), the terminal surface that fastening block (71) are close to fastening hole (42) is equipped with fastening screw (711) with fastening bolt (72) screw-thread fit.

9. An electric putter as claimed in claim 1, wherein: the stop nut (33) is a nylon self-locking nut.