CN212643470U - Driver with self-locking function - Google Patents
Driver with self-locking function Download PDFInfo
- Publication number
- CN212643470U CN212643470U CN202021938047.XU CN202021938047U CN212643470U CN 212643470 U CN212643470 U CN 212643470U CN 202021938047 U CN202021938047 U CN 202021938047U CN 212643470 U CN212643470 U CN 212643470U
- Authority
- CN
- China
- Prior art keywords
- self
- spring
- locking
- arc
- auto
- 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.)
- Active
Links
Images
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model relates to a field of driver, concretely relates to driver with self-locking function, including casing, the drive assembly of setting in the casing and connect the output promotion subassembly on the drive assembly, be provided with the lead screw connecting piece between drive assembly and the output promotion subassembly, be provided with the auto-lock subassembly on the lead screw connecting piece, auto-lock subassembly auto-lock spring, the tip butt of auto-lock spring is at the lead screw connecting piece. The utility model discloses better auto-lock effect has.
Description
Technical Field
The utility model belongs to the technical field of the technique of driver and specifically relates to a driver with self-locking function is related to.
Background
A linear driver is a device for outputting a linear driving force.
Among the prior art, linear driver includes drive assembly and connects the output pole at the drive assembly output, and power through drive assembly lets the output pole provide linear power, stops output power when drive assembly and does not reset for the driving force that lets the actuating lever hover and not by the load, and prior art generally carries on spacingly through stop nut, and the screw thread between promotion lead screw and the stop nut can realize the auto-lock.
The existing technology has the disadvantages that when the load is large, the self-locking force between the push screw rod and the limit nut is not enough, and the self-rotation and retraction of the push screw rod are easily caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a driver with self-locking function, has better self-locking power to prior art exists not enoughly.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a driver with self-locking function, includes the casing, sets up the drive assembly in the casing and connects the output promotion subassembly on the drive assembly, is provided with the lead screw connecting piece between drive assembly and the output promotion subassembly, be provided with the auto-lock subassembly on the lead screw connecting piece, the tip butt of auto-lock spring is at the lead screw connecting piece.
Through adopting above-mentioned technical scheme, both ends butt through the auto-lock spring is on the lead screw connecting piece to let the drive assembly pass through the output that the lead screw connecting piece drove the output and promote the subassembly, and then can let the elasticity of auto-lock spring provide the self-locking power.
The present invention may be further configured in a preferred embodiment as: the shell is fixedly connected with a spring sleeve, the spring sleeve is fixedly connected to the shell, and the inner wall of the self-locking spring abuts against the spring sleeve.
Through adopting above-mentioned technical scheme, the setting of spring housing can provide bigger self-locking power, when the output promoted the subassembly and has the trend that resets, the tip of auto-locking spring was compressed, and then lets the internal diameter of auto-locking spring reduce to cramp on the spring housing, the atress is big more, and the power of cramping is just big more, and then can realize bigger self-locking power.
The present invention may be further configured in a preferred embodiment as: the output pushing assembly comprises a pushing screw rod and a limiting nut in threaded connection with the pushing screw rod, the limiting nut is connected in the casing in a sliding mode, and the screw rod is fixedly connected to the screw rod connecting piece.
Through adopting above-mentioned technical scheme, drive assembly and lead screw connecting piece drive the lead screw and rotate the back, can let the lead screw drive limit nut be linear motion through limit nut's setting, and then provide linear output power, limit nut and the screw-thread fit who promotes the lead screw can let to promote the lead screw and have the auto-lock power, provide first step auto-lock, when the auto-lock power of screw is not enough, cramp on the spring housing through the auto-lock spring, realized further auto-lock.
The present invention may be further configured in a preferred embodiment as: the starting assembly comprises a driving motor fixed on the shell, a driving screw is fixedly connected to the output end of the driving motor, a driving gear is meshed with the driving screw, and the driving gear is connected to the screw rod connecting piece.
Through adopting above-mentioned technical scheme, drive the rotation of drive screw through driving motor, and then can drive gear and rotate, the lead screw connecting piece is started by drive gear, realizes the circular motion of lead screw, realizes limit nut's linear motion.
The present invention may be further configured in a preferred embodiment as: the lead screw connecting piece comprises an arc-shaped driving plate fixedly connected to the inner wall of the driving gear and an arc-shaped linkage plate rotatably connected to the inner wall of the driving gear, the arc-shaped driving plate is identical to the arc-shaped linkage plate in curvature and coincides with the circle center, and the two ends of the self-locking spring are respectively a self-locking end and a free end.
Through adopting above-mentioned technical scheme, it rotates to drive the arc drive plate after drive gear rotates, the arc drive plate promotes the auto-lock end of auto-lock spring and lets the diameter increase of auto-lock spring, and then let auto-lock spring and spring housing separation, the arc drive plate continues to move to promoting the arc linkage board, the arc linkage board drives the lead screw and rotates, and then can make limit nut be linear motion and release, after drive gear stall, promote the lead screw with limit nut auto-lock, when limit nut auto-lock power is not enough, it rotates to promote the lead screw emergence, the auto-lock end of auto-lock spring is by the reverse promotion of arc linkage board and reduce the internal diameter of auto-lock spring, auto-lock spring cramps on the spring housing, the promotion of arc linkage board is big more the cramp power between auto-lock spring and the spring.
The present invention may be further configured in a preferred embodiment as: the arc drive plates are arranged in two numbers, a stroke gap is formed between the two arc drive plates, and the arc linkage plates are located in the stroke gap.
To sum up, the utility model discloses a following at least one useful technological effect:
under the non-working state, the load applies thrust to the pushing screw rod to drive the pushing screw rod to rotate, the arc linkage plate is abutted against the self-locking end of the self-locking spring, the self-locking spring has the tendency of reducing the diameter and locking, the self-locking spring is tightly hooped on the spring sleeve, so that the pushing screw rod cannot rotate, larger self-locking force is realized through the self-locking spring, when the driving motor is started, the arc driving plate pushes the self-locking end of the self-locking spring, the self-locking spring has certain acceleration due to the movement of the motor, meanwhile, friction force exists between the self-locking spring and the spring sleeve, the self-locking spring cannot rotate around the spring sleeve, the inner diameter of the self-locking spring is increased and is separated from the spring sleeve, the arc driving plate continues to rotate and pushes the arc linkage plate to rotate after a stroke gap, the arc linkage plate and the pushing, when the motor stops outputting, the auto-lock spring contracts and cramps on the spring housing, when the auto-lock power that promotes between lead screw and the stop nut is not enough, promotes the lead screw and continues to rotate, drives the auto-lock end rotation of auto-lock spring, and then lets the diameter of auto-lock spring littleer and more to the cramp power of spring housing is bigger and more, and then can provide bigger auto-lock power, realizes promoting the auto-lock of lead screw.
Drawings
FIG. 1 is a schematic structural view of a casing of embodiment 1;
FIG. 2 is a schematic view of the internal structure in embodiment 1;
FIG. 3 is a schematic view of the connection structure of the self-locking assembly;
fig. 4 is an enlarged view of a portion a in fig. 3.
Reference numerals: 1. a housing; 2. a drive assembly; 20. a drive motor; 21. a drive gear; 22. a drive screw; 23. a screw rod connecting piece; 230. an arc drive plate; 231. an arc linkage plate; 233. a bearing; 3. an output pushing assembly; 30. an output pipe; 31. a limit nut; 32. pushing the screw rod; 33. a slider; 4. a self-locking assembly; 40. a spring housing; 41. a self-locking spring; 410. a self-locking end; 411. a free end.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Embodiment 1, refer to fig. 1, fig. 2, fig. 3, a driver with auto-lock function, including casing 1, casing 1 is inside to be provided with output pushing assembly 3, be used for the outside output to push the power, output pushing assembly 3 is connected with the drive assembly 2 that provides power for output pushing assembly 3, push out output pushing assembly 3 outwards through drive assembly 2, on drive assembly 2 and the output pushing assembly 3, still be provided with auto-lock subassembly 4, after output pushing assembly 3 will push outwards, the load is pressed on output pushing assembly 3, auto-lock subassembly 4 can prevent output pushing assembly 3 to be pushed back.
The driving assembly 2 comprises a driving motor 20 fixed inside the casing 1, an output shaft of the driving motor 20 is fixedly connected with a driving screw 22, the driving screw 22 is meshed with a driving gear 21, the driving gear 21 is fixedly connected with a screw rod connecting piece 23, the screw rod connecting piece 23 is connected to a pushing screw rod 32, the driving screw rod 32 is driven to rotate through the screw rod connecting piece 23 after the driving motor 20 is started, and then the limiting nut 31 drives the output pipe 30 to be pushed out outwards.
Referring to fig. 4, the screw rod connector 23 includes an arc driving plate 230 fixed on the gear and a bearing 233 rotatably connected to the inner wall of the driving gear 21, an outer ring of the bearing 233 is fixed to the inner wall of the driving gear 21, an inner ring of the bearing 233 is fixed to the push screw rod 32, an inner ring of the bearing 233 is fixedly connected to an arc linkage plate 231, the curvature of the arc linkage plate 231 is the same as that of the arc driving plate 230, the rotation of the driving gear 21 drives the arc linkage plate 231 to rotate and then drives the push screw rod 32 to rotate, the arc driving plate 230 is provided with two opposite arc driving plates, a stroke gap is provided between the two opposite arc driving plates 230, the arc driving plates 230 are located in the stroke gap.
After the driving motor 20 is started, the gear drives the arc driving plate 230, and after passing through the stroke gap, the gear drives the arc linkage plate 231 to rotate, so as to drive the screw rod 32 to rotate.
The self-locking assembly 4 comprises a spring sleeve 40 fixed inside the casing 1, the spring sleeve 40 is sleeved on the push screw rod 32, and a self-locking spring 41 with the axis collinear with that of the spring sleeve 40 is sleeved on the outer wall of the spring sleeve 40. The two ends of the self-locking spring 41 are respectively a self-locking end 410 and a free end 411, the self-locking end 410 extends outwards along the diameter of the cross section of the self-locking spring 41 and abuts against the arc-shaped drive plate 230, and the free end 411 of the self-locking spring 41 extends outwards along the diameter of the cross section of the self-locking spring 41 and has a large friction force with the spring sleeve 40.
In the rotation process of the arc-shaped driving plate 230, the self-locking end 410 of the self-locking spring 41 is firstly driven to push outwards, at this time, the pushing screw rod 32 is not rotated yet, or the rotating speed is lower than that of the arc-shaped driving plate 230, the diameter of the cross section of the self-locking spring 41 is increased, no locking force exists between the self-locking spring 41 and the spring sleeve 40, after the arc-shaped driving plate 230 continues to rotate, the arc-shaped driving plate 230 contacts the arc-shaped linkage plate 231 after passing through a stroke gap, and then the screw rod is driven to rotate, after the driving motor 20 stops rotating, the arc-shaped driving plate 230 stops transmission, the pushing screw rod 32 has a restoring force of reverse rotation, the arc-shaped linkage plate 231 drives the self-locking end 410 of the self-locking spring 41 to rotate in the reverse direction, at this time, the diameter of the cross section of the self-locking spring 41 is reduced, providing a greater self-locking force for self-locking of the push screw 32.
In the prior art, the self-locking of the push screw rod 32 completely depends on the limit nut 31 and the thread between the push screw rod 32 to provide self-locking, when the load is large, the self-locking force is insufficient, the self-locking spring 41 and the elastic force at the two ends of the self-locking spring 41 are hooped on the spring sleeve 40, the self-locking force is increased for pushing the screw rod 32, and the self-locking effect is better.
In a specific implementation process, in a non-working state, a load applies a thrust to the pushing screw rod 32 to drive the pushing screw rod 32 to rotate, at this time, the arc-shaped linkage plate 231 abuts against the self-locking end 410 of the self-locking spring 41, the self-locking spring 41 has a tendency of diameter reduction and locking, the self-locking spring 41 is tightly hooped on the spring sleeve 40, so that the pushing screw rod 32 cannot rotate, a large self-locking force is realized through the self-locking spring 41, when the driving motor 20 is started, the arc-shaped driving plate 230 pushes the self-locking end 410 of the self-locking spring 41, the self-locking spring 41 has a certain acceleration due to the movement of the motor, and meanwhile, a friction force exists between the self-locking spring 41 and the spring sleeve 40, so that the self-locking spring 41 cannot rotate around the spring sleeve 40, the inner diameter of the self-locking spring 41 is increased and is separated from the spring sleeve 40, the arc-shaped driving, under stop nut 31's drive, output tube 30 is the forward output driving force, when the motor stops the output, auto-lock spring 41 contracts and cramps on spring housing 40, when the auto-lock power that promotes between lead screw 32 and the stop nut 31 is not enough, promote lead screw 32 and continue to rotate, drive auto-lock end 410 of auto-lock spring 41 and rotate, and then let auto-lock spring 41's diameter littleer and littleer, and it is bigger and bigger to the cramp power of spring housing 40, and then can provide bigger auto-lock power, realize promoting the auto-lock of lead screw 32.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (6)
1. The utility model provides a driver with self-locking function, includes casing (1), sets up drive assembly (2) in casing (1) and connects output pushing assembly (3) on drive assembly (2), its characterized in that: be provided with lead screw connecting piece (23) between drive assembly (2) and output promotion subassembly (3), be provided with auto-lock subassembly (4) on lead screw connecting piece (23), auto-lock subassembly (4) are including auto-lock spring (41), the tip butt of auto-lock spring (41) is at lead screw connecting piece (23).
2. The driver with self-locking function according to claim 1, wherein: the self-locking spring is characterized in that a spring sleeve (40) is fixedly connected to the casing (1), the spring sleeve (40) is fixedly connected to the casing (1), and the inner wall of the self-locking spring (41) abuts against the spring sleeve (40).
3. The driver with self-locking function according to claim 2, wherein: the output pushing assembly (3) comprises a pushing screw rod (32) and a limiting nut (31) in threaded connection with the pushing screw rod (32), the limiting nut (31) is in sliding connection with the inside of the machine shell (1), and the screw rod is fixedly connected to the screw rod connecting piece (23).
4. The driver with self-locking function according to claim 3, wherein: drive assembly (2) are including fixing driving motor (20) on casing (1), the output fixedly connected with drive screw (22) of driving motor (20), drive screw (22) meshing has drive gear (21), drive gear (21) are connected on lead screw connecting piece (23).
5. The driver with self-locking function according to claim 4, wherein: the lead screw connecting piece (23) comprises an arc driving plate (230) fixedly connected to the inner wall of the driving gear (21) and an arc linkage plate (231) rotatably connected to the inner wall of the driving gear (21), the arc driving plate (230) is identical to the curvature of the arc linkage plate (231) and the circle centers of the arc driving plate and the arc linkage plate coincide, two ends of the self-locking spring (41) are respectively a self-locking end (410) and a free end (411), and the free end (411) of the self-locking spring (41) is abutted to the arc driving plate (230).
6. The driver with self-locking function according to claim 5, wherein: the two arc driving plates (230) are arranged, a stroke gap is formed between the two arc driving plates (230), and the arc linkage plate (231) is located in the stroke gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021938047.XU CN212643470U (en) | 2020-09-06 | 2020-09-06 | Driver with self-locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021938047.XU CN212643470U (en) | 2020-09-06 | 2020-09-06 | Driver with self-locking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212643470U true CN212643470U (en) | 2021-03-02 |
Family
ID=74762912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021938047.XU Active CN212643470U (en) | 2020-09-06 | 2020-09-06 | Driver with self-locking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212643470U (en) |
-
2020
- 2020-09-06 CN CN202021938047.XU patent/CN212643470U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3559499A (en) | Self-contained mechanical actuator | |
| WO2022214049A1 (en) | Clutch execution mechanism and vehicle | |
| CN212643470U (en) | Driver with self-locking function | |
| JP4751935B2 (en) | Mechanical drive for plasticizing and injecting synthetic resin | |
| CN111998049A (en) | Driver with self-locking function | |
| CN205503895U (en) | Rotatory device of restriction screw nut | |
| CN209800671U (en) | Linear actuator | |
| AU2020252122A1 (en) | Automatic door operator | |
| CN207377996U (en) | Bi-motor automatic clutch actuator | |
| CN205499339U (en) | Straight line electric steering engine | |
| CN201371778Y (en) | Specular angle position regulating mechanism of automobile rearview mirror | |
| CN211449591U (en) | Speed reducer for underwater operation | |
| CN208300776U (en) | A kind of wire throwing mechanism of closed fishing lines reel | |
| CN215293806U (en) | Electric actuator | |
| CN208473463U (en) | A kind of smart lock clutch | |
| CN210799652U (en) | Small and exquisite electric connecting bolt | |
| CN217252862U (en) | Main shaft rotating device | |
| CN216242116U (en) | Torque and thrust conversion device | |
| CN210830129U (en) | Power input shaft | |
| CN218670476U (en) | Transmission structure of crimping device | |
| CN221145088U (en) | Clutch linkage mechanism suitable for manual and power mode seamless connection | |
| CN210686856U (en) | Stability drive structure that possesses brake function | |
| CN217730418U (en) | Worm-gear type electronic parking power assembly for drum brake | |
| CN210671767U (en) | Fishing vessel and low-noise gear transmission mechanism thereof | |
| CN217130221U (en) | Multipurpose modularization spiral bevel gear speed reducer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |