CN204465251U - A kind of electric linear driver - Google Patents
A kind of electric linear driver Download PDFInfo
- Publication number
- CN204465251U CN204465251U CN201520105352.3U CN201520105352U CN204465251U CN 204465251 U CN204465251 U CN 204465251U CN 201520105352 U CN201520105352 U CN 201520105352U CN 204465251 U CN204465251 U CN 204465251U
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- hole
- driving tube
- coupling head
- electric linear
- linear driver
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Abstract
The utility model relates to a kind of electric linear driver, comprise casing, be installed on casing can the motor of positive and negative rotation, be installed on the worm screw of motor output shaft, the worm gear be meshed with worm screw, the outer tube of casing is fixed in one end, be positioned at the screw mandrel of outer tube pipe, worm gear is fixedly placed on screw mandrel, screw mandrel has been threaded feed screw nut, the non-rotatable mode of feed screw nut is loaded in outer tube, feed screw nut is connected with the driving tube being positioned at outer tube pipe, screw mandrel is positioned at driving tube pipe, the front end of outer tube is provided with supporting cover, the front end of driving tube is through supporting cover, through hole one is provided with in the front end edge radial direction of driving tube, the coupling head being matched with its inside pipe wall is provided with in the front end of driving tube, radial direction along coupling head is provided with the through hole two connected with through hole one.The utility model driving tube is not yielding, and linear drives stroke accuracy is high, and stroke is long, long service life.
Description
Technical field
The utility model relates to a kind of electric actuator part, is specially a kind of electric linear driver.
Background technology
Electric linear driver is widely used in medical bed, household beddo, hotel's beddo, electric rehabilitation bed, dental chair, Comfortable electric sofa, helps in the product of the adjustable positions such as station chair, electric elevatable table, automotive seat, massage armchair old age, and it is driven the parts of the adjustable health position of bed, sofa, tables and chairs etc. and then regulates the position (angle) that human body is suitable by motor, reduction box, drive disk assembly etc.The mounting means of current electric linear driver normally arranges installation through hole respectively on casing and driving tube, installs through hole and is connected by products such as the connectors such as straight pin and bed bodies.The installation through hole of the driving tube of electric linear driver most is at present that direct radially punching is in the front end (as shown in Figure 6) of hollow driving tube, or be connected with external with the connector (as shown in Figure 7) installing through hole at driving tube nose threads, because of the structure that driving tube is hollow, when through hole 11 is installed in direct punching on driving tube 8 shown in Fig. 6, if load is larger, easily cause and the tired stretcher strain of through hole 11 is installed, thus affect the precision of stroke.And adopt the mode of the external coupling head 12 shown in Fig. 7 to install, although larger load can be born, but the thread head due to coupling head need occupy the inner larger space of driving tube, with direct on driving tube punching install compared with the structure of through hole, when in casing with the installation through hole on driving tube apart from time identical, screw mandrel is relatively short, and achieved stroke is also less.
Summary of the invention
In order to solve the problem, the utility model provides a kind of electric linear driver, and driving tube is not yielding, and linear drives stroke accuracy is high, and stroke is long, long service life.
For achieving the above object, concrete scheme of the present utility model is:
A kind of electric linear driver, comprise casing, be installed on casing can the motor of positive and negative rotation, be installed on the worm screw of motor output shaft, the worm gear be meshed with worm screw, the outer tube of casing is fixed in one end, be positioned at the screw mandrel of outer tube pipe, worm gear is fixedly placed on screw mandrel, screw mandrel has been threaded feed screw nut, feed screw nut is non-rotatable to be loaded in outer tube, feed screw nut is connected with the driving tube being positioned at outer tube pipe, screw mandrel is positioned at driving tube pipe, the front end of outer tube is provided with supporting cover, the front end of driving tube is passed supporting cover and stretches out, the part passing supporting cover in the front end of driving tube is radially provided with through hole one, the coupling head being matched with its inside pipe wall is provided with in the front end of driving tube, radial direction along coupling head is provided with through hole two, after installing, through hole two and through hole one connect.
Coupling head is connected with driving tube inner thread.
Radial direction through hole two in coupling head is circular port.
The length of the through hole one of driving tube is greater than the diameter of the through hole two of coupling head, and the width of the through hole one of driving tube is more than or equal to the diameter of the through hole two of coupling head.Here, as long as the pitch of diameter+1/2 through hole two of the length >=through hole two of the through hole one of general driving tube, through hole is once can when mounted to upper with through hole two, and once straight pin is through after through hole one and through hole two, coupling head and driving tube just can not relatively rotate.
Through hole one is mounting hole or slotted eye or slot.
Through hole one is circular port, and the diameter of through hole one is greater than the diameter of through hole two.
Through hole one is square opening, and the width of through hole one is greater than the diameter of through hole two.
Through hole two in coupling head is mounting hole or slotted eye or slot or square hole.
The length of the through hole one of driving tube is greater than the length of the through hole two of coupling head, and the width of the through hole one of driving tube is more than or equal to the width of the through hole two of coupling head.
The utility model driving tube is not yielding, and linear drives stroke accuracy is high, and stroke is long, long service life.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of coupling head.
Fig. 3 is the structural representation that the utility model embodiment 1 removes coupling head.
Fig. 4 is the structural representation that the utility model embodiment 2 removes coupling head.
Fig. 5 is the structural representation of the utility model embodiment 3.
Fig. 6 be current electric linear driver along the radial punching of driving tube install through hole structural representation.
Fig. 7 is current electric linear driver arranges external coupling head structural representation in driving tube front end.
In figure: motor 1, casing 2, outer tube 3, worm screw 4, worm gear 5, screw mandrel 6, feed screw nut 7, driving tube 8, through hole one 8-1, supporting cover 9, coupling head 10, through hole two 10-1, installation through hole 11, external coupling head 12.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described,
Embodiment 1: see accompanying drawing 1 ~ accompanying drawing 3, a kind of electric linear driver, comprise casing 2, be installed on casing 2 can the motor 1 of positive and negative rotation, be installed on the worm screw 4 of motor 1 output shaft, the worm gear 5 be meshed with worm screw 4, the outer tube 3 of casing 2 is fixed in one end, be positioned at the screw mandrel 6 of outer tube 3 pipe, worm gear 5 is fixedly placed on screw mandrel 6, screw mandrel 6 has been threaded feed screw nut 7, feed screw nut 7 is non-rotatable is connected to outer tube 3 inwall, feed screw nut 7 is connected with the driving tube 8 being positioned at outer tube 3 pipe, screw mandrel 6 is positioned at driving tube 8 and manages, the front end of outer tube 3 is provided with supporting cover 9, the front end of driving tube 8 is passed supporting cover 9 and stretches out, the part passing supporting cover 9 in the front end of driving tube 8 is radially provided with through hole one 8-1, the coupling head 10 being matched with its inside pipe wall is provided with in the front end of driving tube 8, radial direction along coupling head 10 is provided with through hole two 10-1, in the present embodiment, through hole two 10-1 is designed to circular hole, after in the front tube that coupling head 10 is installed on driving tube 8, through hole two 10-1 and through hole one 8-1 connects.
Coupling head 10 is connected with driving tube 8 inner thread.
Through hole one 8-1 of the present embodiment is mounting hole, and the length L of through hole one 8-1 is greater than the diameter d of through hole two 10-1, and through hole one 8-1 width H equals the diameter d of through hole two 10-1.
The leading section of electric linear driver is fixed with the product such as bed body through through hole one 8-1 of driving tube 8 and through hole two 10-1 of coupling head 10 by connectors such as straight pins, end because of driving tube 8 is provided with columned coupling head 10, what enhance driving tube 8 is subject to force intensity, motor 1 starts the rear driving tube 8 that finally orders about along moving in outer tube 3 thus the products such as adjustment bed body, driving tube 8 can not in use be out of shape, ensure that the accuracy of the displacement of driving tube 8, ensure that the linear drives precision of electric linear driver.
Embodiment 2: see accompanying drawing 1, accompanying drawing 2, accompanying drawing 4, a kind of electric linear driver, through hole one 8-1 of the present embodiment driving tube 8 and through hole two 10-1 of coupling head 10 is all circular port, and the diameter D of through hole one 8-1 is greater than the diameter d of through hole two 10-1, and all the other structures are all identical with embodiment 1.
Embodiment 3: see accompanying drawing 5, a kind of electric linear driver, the circumference of the present embodiment coupling head 10 and the inwall of driving tube 8 do not establish screw thread, and the two closely cooperates, and all the other structures are all identical with embodiment 2.
Claims (9)
1. an electric linear driver, comprise casing, be installed on casing can the motor of positive and negative rotation, be installed on the worm screw of motor output shaft, the worm gear be meshed with worm screw, the outer tube of casing is fixed in one end, be positioned at the screw mandrel of outer tube pipe, worm gear is fixedly placed on screw mandrel, screw mandrel has been threaded feed screw nut, feed screw nut is non-rotatable to be loaded in outer tube, feed screw nut is connected with the driving tube being positioned at outer tube pipe, screw mandrel is positioned at driving tube pipe, the front end of outer tube is provided with supporting cover, it is characterized in that: the front end of driving tube is passed supporting cover and stretches out, the part passing supporting cover in the front end of driving tube is radially provided with through hole one, the coupling head being matched with its inside pipe wall is provided with in the front end of driving tube, radial direction along coupling head is provided with through hole two, after installing, through hole two and through hole one connect.
2. electric linear driver according to claim 1, is characterized in that: coupling head is connected with driving tube inner thread.
3. electric linear driver according to claim 1 and 2, is characterized in that: the radial direction through hole two in coupling head is circular port.
4. electric linear driver according to claim 3, is characterized in that: the length of the through hole one of driving tube is greater than the diameter of the through hole two of coupling head, and the width of the through hole one of driving tube is more than or equal to the diameter of the through hole two of coupling head.
5. electric linear driver according to claim 4, is characterized in that: through hole one is mounting hole or slotted eye or slot.
6. electric linear driver according to claim 3, is characterized in that: through hole one is circular port, and the diameter of through hole one is greater than the diameter of through hole two.
7. electric linear driver according to claim 3, is characterized in that: through hole one is square opening, and the width of through hole one is greater than the diameter of through hole two.
8. electric linear driver according to claim 1 and 2, is characterized in that: through hole in coupling head two is mounting hole or slotted eye or slot or square hole.
9. electric linear driver according to claim 8, is characterized in that: the length of the through hole one of driving tube is greater than the length of the through hole two of coupling head, and the width of the through hole one of driving tube is more than or equal to the width of the through hole two of coupling head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520105352.3U CN204465251U (en) | 2015-02-13 | 2015-02-13 | A kind of electric linear driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520105352.3U CN204465251U (en) | 2015-02-13 | 2015-02-13 | A kind of electric linear driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204465251U true CN204465251U (en) | 2015-07-08 |
Family
ID=53672077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520105352.3U Active CN204465251U (en) | 2015-02-13 | 2015-02-13 | A kind of electric linear driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204465251U (en) |
-
2015
- 2015-02-13 CN CN201520105352.3U patent/CN204465251U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Wujin Henglin Zhenjiang Village Road 213101 Jiangsu city of Changzhou province No. 4 Patentee after: CHANGZHOU KAIDI ELECTRICAL CO., LTD. Address before: Wujin Henglin Zhenjiang Village Road 213101 Jiangsu city of Changzhou province No. 4 Patentee before: Changzhou Kaidi Electric Appliance Co., Ltd. |