CN207588631U - A kind of three-stage electric pushrod - Google Patents
A kind of three-stage electric pushrod Download PDFInfo
- Publication number
- CN207588631U CN207588631U CN201721065072.XU CN201721065072U CN207588631U CN 207588631 U CN207588631 U CN 207588631U CN 201721065072 U CN201721065072 U CN 201721065072U CN 207588631 U CN207588631 U CN 207588631U
- Authority
- CN
- China
- Prior art keywords
- dumping
- section
- inner tube
- screw rod
- electric pushrod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of three-stage electric pushrods, including driving motor, the outer pipe, the pipe and the inner pipe, motor-driven drive screw driven is equipped in outer tube, it is provided on drive screw and motion block is promoted mainly by thread fitting with drive screw, outer tube is installed in inner tube and promotes mainly on motion block, said inner tube includes pushing section, anti-dumping section and releases section, the described one end of promotion section far from driving motor is provided with anti-dumping set, it is fixed in the anti-dumping set and is equipped with anti-dumping screw rod, one end of the anti-dumping screw rod, which is installed in, releases one end far from driving motor in section.When inner tube is pushed outwardly, since its front end is fixed by anti-dumping screw rod, when inner tube tilts, anti-dumping screw rod can support inner tube, reduce the angle of inclination of inner tube, so as to reduce hysteresis phenomenon when inner tube is withdrawn, while the abrasion on screw rod between screw thread is reduced, increase the durability of the three-stage electric pushrod.
Description
Technical field
The utility model belongs to technical field of transmission equipment, more particularly to a kind of three-stage electric pushrod.
Background technology
Electric pushrod is a kind of for being the electrical equipment to move along a straight line by convert rotational motion, is widely used in Medical treatment device
The fields such as tool, furniture, industrial instrument.
Application No. is 201520039629.7 Chinese patents, a kind of three-section type pipe electric pushrod are disclosed, including outer
Pipe and the driving motor being arranged in outer tube, level-one screw rod, level-one nut, hollow two level screw rod, two level nut, middle pipe
And inner tube；Inner tube is set in middle pipe, and a limiting device is additionally provided in outer tube, and limiting device includes limit base, is arranged on limit
The drag link mechanism of the first limit switch and the second limit switch and triggering the first limit switch action on the seat of position, limits seat
Between connector sleeve and level-one nut, limiting device further include two it is in parallel with the first limit switch and the second limit switch respectively
Diode.Relative to the prior art, the processing of three-section type pipe electric pushrod technique and assembling of the utility model are simple, are convenient for
It promotes and applies；The limit switch of limitation stroke limit position is all set on same limit base so that limiting device is simpler,
Installation is more convenient, and middle pipe and inner tube is made to be precisely controlled in stroke limit position.
The patent is disadvantageous in that push rod is easy because being tilted down by gravity after pushing out, especially
It is the electric pushrod of three-stage, and when causing the driving motor to reverse, spacing is inconsistent between screw flight, and electric pushrod is caused to receive
Sluggish, inclination abrasion that is serious or even be easy to causeing screw rod is generated when returning.
Utility model content
In view of the deficiencies of the prior art, the utility model provide it is a kind of can reduce push rod release when angle of inclination three
Segmentation electric pushrod.
To achieve the above object, the utility model provides following technical solution：A kind of three-stage electric pushrod, including driving
Motor, the outer pipe, the pipe and the inner pipe are moved, motor-driven drive screw driven is equipped in outer tube, is provided on drive screw
With drive screw by the motion block of promoting mainly of thread fitting, outer tube is installed in inner tube and promotes mainly on motion block, it is characterised in that：In described
Pipe includes pushing section, anti-dumping section and releases section, and the described one end of promotion section far from driving motor is provided with anti-dumping set, the anti-dumping
It is fixed in set and is equipped with anti-dumping screw rod, one end of the anti-dumping screw rod, which is installed in, releases one end far from driving motor in section.
Through the above technical solutions, when inner tube is pushed outwardly, since its front end is fixed by anti-dumping screw rod, when inner tube is inclined
When oblique, anti-dumping screw rod can support inner tube, reduce the angle of inclination of inner tube, so as to reduce hysteresis phenomenon when inner tube is withdrawn, together
When reduce abrasion on screw rod between screw thread, increase the durability of the three-stage electric pushrod.
It is further arranged to, the drive screw is set as hollow, and the anti-dumping screw rod is threaded through in drive screw.
Through the above technical solutions, during so that inner tube extending to limiting length, the stationarity of inner tube can be still kept, is subtracted
Delay its angle of inclination, increase the durability of the three-stage electric pushrod.
It is further arranged to, the anti-dumping section includes thread segment and linkage section, and the thread segment is contradicted with linkage section
On the inner wall of middle pipe, one end and the thread segment of said inner tube are threadably secured.
Through the above technical solutions, anti-dumping section to keep anti-dumping cover stabilization, and due to anti-dumping section with release section screw thread
Connection so that release section when being pushed out, the level for keeping releasing section entirety by the engagement between multiple screw threads can be thrown, so as to subtract
The angle of inclination of slow inner tube slows down the hysteresis phenomenon of inner tube, reduces the abrasion between screw thread.
It is further arranged to, the anti-dumping, which is put on, is provided with external groove, and inner groovy is provided on the linkage section, described interior
Clamp spring is provided on groove and the inner wall of external groove.
Through the above technical solutions, clamp spring is stuck in inner groovy in external groove, enabling to anti-dumping set and the knot of anti-dumping section
It closes even closer, so as to further slow down inclination between the two, ensures the horizontality of entire electric pushrod.
It is further arranged to, offers dovetail groove on the inner wall for pushing section, annular is provided on the drive screw
Several are embedded in the convex block in dovetail groove.
Through the above technical solutions, the setting of convex block and dovetail groove, on the one hand can ensure that middle pipe turns with drive screw
It moves and rotates, on the other hand so that inner tube fits closely during exercise with drive screw, so as to ensure that subsequent transmission can be more
Add stable and holding horizontal, further increase the horizontality of middle pipe and inner tube, it is worked to slow down the electric pushrod
Angle of inclination in journey, it is smooth when ensure that withdrawal.
It is further arranged to, the anti-dumping set is engaged with anti-dumping screw rod by screw thread, and anti-dumping, which is put on, offers pin hole, institute
Anti-dumping set is stated to be fixedly connected by bolt with anti-dumping screw rod.
Through the above technical solutions, anti-dumping set is enabled to be fitted closely with anti-dumping screw rod, anti-dumping screw rod and inner tube are realized
Synchronous rotation, so as to reduce the inclined degree of inner tube, ensure the level of inner tube.
Description of the drawings
Fig. 1 is the schematic cross-sectional view of three-stage electric pushrod；
Fig. 2 is the enlarged drawing at A in Fig. 1；
Fig. 3 is the enlarged drawing at B in Fig. 2；
Fig. 4 is the enlarged drawing at C in Fig. 3；
Fig. 5 is the connection diagram of dovetail groove and convex block.
Reference numeral：1st, outer tube；2nd, middle pipe；3rd, inner tube；31st, section is pushed；311st, dovetail groove；32nd, anti-dumping section；321st, screw thread
Section；322nd, linkage section；33rd, section is released；4th, driving motor；5th, motion block is promoted mainly；6th, drive screw；61st, convex block；7th, anti-dumping set；71、
External groove；72nd, inner groovy；73rd, clamp spring；74th, pin hole；8th, anti-dumping screw rod.
Specific embodiment
The technical solution of the utility model and advantageous effect are understood for convenience of those skilled in the art, with reference to attached drawing
Specific embodiment is made described below.
Refer to the attached drawing, a kind of three-stage electric pushrod, including driving motor 4 and the outer tube being arranged successively 1, middle pipe 2 and interior
Pipe 3 is equipped with drive screw 6 in outer tube 1, and 6 motor 4 driven of drive screw drives.It is provided in outer tube 1 and drive screw 6
Motion block 5 is promoted mainly by thread fitting, can be transmitted screw rod 6 when drive screw 6 rotates and drive and carried out in outer tube 1 past
Multiple translation, middle pipe 2 are threadably secured to be connected to and promote mainly on motion block 5 with inner tube 3, when promoting mainly motion block 5 and moving, middle pipe 2 with it is interior
Pipe 3 is moved with promoting mainly motion block 5.Inner tube 3 be divided into push section 31, anti-dumping section 32 and release section 33, push section 31 i.e. and master
Pushing block 5 is fixedly connected, and is released when section 33 is three-stage electric pushrod expansion and is extended that longest section, and anti-dumping section 32 is used for
The balance for keeping inner tube 3 whole.One end far from driving motor 4 in section 31 is pushed to be provided with anti-dumping set 7, is fixed in anti-dumping set 7
And an anti-dumping screw rod 8 is equipped with, one end of anti-dumping screw rod 8, which is fixed on, to be released in section 33.When inner tube 3 is pushed out, due to pushing away
Go out 33 front end of section to be fixed by anti-dumping screw rod 8, and anti-dumping screw rod 8 is arranged on and is fixed in anti-dumping set 7 so that when inner tube 3 is inclined
When oblique, anti-dumping screw rod 8 can support inner tube 3, reduce the angle of inclination of inner tube 3, show so as to reduce sluggishness when inner tube 3 is withdrawn
As, while the abrasion between screw thread is reduced, increase the durability of the three-stage electric pushrod.
Wherein drive screw 6 is set as hollow, and anti-dumping screw rod 8 is extended into drive screw 6, which enables to
When the electric pushrod is unfolded, anti-dumping screw rod 8 still can there are enough length to keep inner tube 3 backwards to the one end for releasing section 33
Stationarity, so as to slow down the whole angle of inclination of inner tube 3, increase the durability of the three-stage electric pushrod.
Anti-dumping section 32 include thread segment 321 and linkage section 322, thread segment 321 presented with linkage section 322 it is cylindric, and
Its edge is contradicted on the inner wall of middle pipe 2, so that anti-dumping section 32 can keep the stabilization of anti-dumping set 7.And due to anti-dumping
Section 32 is threadedly coupled with releasing section 33 so that is released section 33 when being pushed out, can be kept by the engagement between multiple screw threads
The whole level of section 33 is released, so as to slow down the angle of inclination of inner tube 3, slows down hysteresis phenomenon when inner tube 3 is withdrawn, reduces screw thread
Between abrasion.
External groove 71 is provided on anti-dumping set 7, inner groovy 72, inner groovy 72 and external groove 71 are provided on linkage section 322
Inner wall on be provided with clamp spring 73.Clamp spring 73 is stuck in inner groovy 72 in external groove 71, enabling to anti-dumping set 7 and anti-dumping section 32
Combination it is even closer, so as to further slow down inclination between the two, ensure the level of entire electric pushrod.
It pushes and dovetail groove 311 is offered on the inner wall of section 31, annular is provided with several and is embedded in dovetail on drive screw 6
Convex block 61 in slot 311.The setting of convex block 61 and dovetail groove 311, on the one hand can ensure that middle pipe 2 is rotated with drive screw 6
And rotate, on the other hand so that inner tube 3 fits closely during exercise with drive screw 6, so as to ensure that subsequent transmission can be more
Add steadily, further increase the horizontality of middle pipe 2 and inner tube 3, slow down the inclination in the electric pushrod course of work
Angle, it is smooth when ensure that withdrawal.
Anti-dumping set 7 is engaged with anti-dumping screw rod 8 by screw thread, and pin hole 74, anti-dumping set 7 and anti-dumping are offered on anti-dumping set 7
Screw rod 8 is fixedly connected by bolt, and anti-dumping set 7 is enabled to be fitted closely with anti-dumping screw rod 8, realizes anti-dumping screw rod 8 and inner tube 3
Synchronous rotation, so as to reduce the inclined degree of inner tube 3, be further ensured that the integral level of inner tube 3.
The above is only the preferred embodiment of the utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment, all technical solutions belonged under the utility model thinking belong to the scope of protection of the utility model.It should refer to
Go out, for those skilled in the art, several improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (6)
1. a kind of three-stage electric pushrod including driving motor (4), outer tube (1), middle pipe (2) and inner tube (3), is worn in outer tube (1)
Equipped with the drive screw (6) that motor driven (4) drives, it is provided on drive screw (6) and is matched with drive screw (6) by screw thread
That closes promotes mainly motion block (5), and outer tube (1) is installed in inner tube (3) and promotes mainly on motion block (5), it is characterised in that：Said inner tube (3) is wrapped
It includes and pushes section (31), anti-dumping section (32) and release section (33), it is described that the one end of section (31) far from driving motor (4) is pushed to be provided with
Anti-dumping set (7) is fixed in the anti-dumping set (7) and is equipped with anti-dumping screw rod (8), and one end of the anti-dumping screw rod (8) is installed in
Release one end far from driving motor (4) in section (33).
2. a kind of three-stage electric pushrod according to claim 1, it is characterised in that：The drive screw (6) is set as
Hollow, the anti-dumping screw rod (8) is threaded through in drive screw (6).
3. a kind of three-stage electric pushrod according to claim 2, it is characterised in that：The anti-dumping section (32) is including screw thread
Section (321) and linkage section (322), the thread segment (321) is contradicted with linkage section (322) on the inner wall of middle pipe (2), described
One end of inner tube (3) is threadably secured with thread segment (321).
4. a kind of three-stage electric pushrod according to claim 3, it is characterised in that：It is provided on the anti-dumping set (7)
External groove (71) is provided with inner groovy (72), the inner groovy (72) and the inner wall of external groove (71) on the linkage section (322)
On be provided with clamp spring (73).
5. a kind of three-stage electric pushrod according to claim 4, it is characterised in that：On the inner wall for pushing section (31)
Dovetail groove (311) is offered, annular is provided with several convex blocks being embedded in dovetail groove (311) on the drive screw (6)
(61)。
6. a kind of three-stage electric pushrod according to claim 5, it is characterised in that：The anti-dumping set (7) and anti-dumping spiral shell
Bar (8) is engaged by screw thread, and pin hole (74) is offered on anti-dumping set (7), and the anti-dumping set (7) passes through with anti-dumping screw rod (8)
Bolt is fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721065072.XU CN207588631U (en) | 2017-08-24 | 2017-08-24 | A kind of three-stage electric pushrod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721065072.XU CN207588631U (en) | 2017-08-24 | 2017-08-24 | A kind of three-stage electric pushrod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207588631U true CN207588631U (en) | 2018-07-06 |
Family
ID=62718724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721065072.XU Expired - Fee Related CN207588631U (en) | 2017-08-24 | 2017-08-24 | A kind of three-stage electric pushrod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207588631U (en) |
-
2017
- 2017-08-24 CN CN201721065072.XU patent/CN207588631U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207588631U (en) | A kind of three-stage electric pushrod | |
| CN204868844U (en) | Simple and easy pickup attachment | |
| CN207814839U (en) | A kind of heightening bracket increased convenient for display | |
| CN203866870U (en) | Multi-angle shovel | |
| CN204319239U (en) | TCM nursing network reason is logical knocks device for rehabilitation | |
| CN105030446A (en) | Seat capable of assist old people in standing | |
| CN204244680U (en) | A kind of gardens instrument | |
| CN207767702U (en) | The electronic rod assembly of luggage | |
| CN107588985A (en) | A kind of deep water sample devices | |
| CN210697684U (en) | Percussion hammer for pediatric internal medicine | |
| CN203941821U (en) | Switch cubicle operating rocker handle | |
| CN106363578A (en) | Source assembling and disassembling tool and method for pump-out type lithologic density logging instrument | |
| CN206753467U (en) | A kind of rolling screen door auxiliary brake | |
| CN206462616U (en) | A kind of nasal cavity cleaning brush | |
| CN211186103U (en) | Novel silica gel handle | |
| CN205703979U (en) | A kind of bomb disposal piping tool | |
| CN209125864U (en) | A kind of concertina type composite mechanical arm of multistage grade | |
| CN208476856U (en) | A kind of building detection device | |
| CN201970293U (en) | Labor-saving structure for handheld engineering driller | |
| CN205678087U (en) | A kind of gear translation mechanism of Non-follow control | |
| CN209581750U (en) | A kind of rotary braking device | |
| CN205709835U (en) | A kind of former explosive barrel dnockout draw-out device | |
| CN202622663U (en) | Drawing screwdriver | |
| CN217528629U (en) | Dust collector for commodity circulation warehouse | |
| CN207040616U (en) | Multifunctional fishing rod support |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180706 Termination date: 20190824 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |