CN202275740U - Motor-driven push rod limit switch device - Google Patents
Motor-driven push rod limit switch device Download PDFInfo
- Publication number
- CN202275740U CN202275740U CN2011204207915U CN201120420791U CN202275740U CN 202275740 U CN202275740 U CN 202275740U CN 2011204207915 U CN2011204207915 U CN 2011204207915U CN 201120420791 U CN201120420791 U CN 201120420791U CN 202275740 U CN202275740 U CN 202275740U
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- China
- Prior art keywords
- cam
- worm
- limit switch
- switch device
- small
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- Expired - Lifetime
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Abstract
The utility model discloses a motor-driven push rod limit switch device, comprising a housing, and a transmission assembly, a worm gear assembly and a switch assembly disposed in the housing. The worm gear assembly comprises a small worm disposed on the tail portion of a screw rod through an optical shaft and a small worm gear meshed with the small worm, wherein the small worm gear is installed on a worm gear shaft which is provided with a pinion; a camshaft is fixed on the housing and is sleeved with a camshaft sleeve; the pinion is meshed with a gearwheel disposed on the camshaft sleeve; the switch component comprises a cam disposed on the camshaft sleeve and a microswitch; and the cam can be contacted movably with the microswitch through the transmission of the worm gear assembly for switching on or switching off a circuit. The motor-driven push rod limit switch device has a good sealing effect, thereby being capable of working normally in external environment with relatively poor conditions.
Description
Technical field
The utility model relates to a kind of electric pushrod, is specifically related to a kind of electric pushrod limit switch device.
Background technology
Electric pushrod is a kind of rotatablely moving of motor to be transformed into the power-jdriven gear of the straight reciprocating motion of push rod, is universal auxiliary drive, can be used as to carry out machinery and use, to realize far distance controlled, centralized control or control automatically.Electric pushrod generally comprises shell, motor, travel switch, interior pipe and outer tube, and interior pipe phase outer tube under the drive of motor is carried out the linear telescopic motion, realizes promoting function.The prior electric push rod can produce following problem in real work; The limit switch device of some electric pushrod is installed on the electric pushrod shell, because shell is to install and fix limit switch through the mode that has fixing hole, causes the electric pushrod sealing effectiveness after the perforate bad; Particularly more abominable in some external environment conditions; For example, have environment such as corrosive gas, dust storm, will influence the external limit switch operate as normal of electric pushrod.
The utility model content
The utility model provides a kind of electric pushrod limit switch device, and is bad to solve the external limit switch sealing effectiveness of present electric pushrod, the problem that externally environment relatively can't operate as normal under the harsh conditions.
For realizing above-mentioned purpose, adopt following technical scheme:
A kind of electric pushrod limit switch device; Comprise housing, be positioned at transmission component, Worm-gear assembly and the switch module of enclosure interior; Said Worm-gear assembly comprises through optical axis and is installed in small worm in the hole of leading screw afterbody and the small gear that is meshed with small worm; Said small gear is installed on the worm-wheel shaft, has pinion on the said worm-wheel shaft; Camshaft is fixed on the housing, is with cam sleeve on the said camshaft; Said pinion is meshed with gear wheel on being installed in cam sleeve; Said switch module comprises cam and the sensitive switch that is provided with on the cam sleeve, and said cam can contact with sensitive switch is movable through the transmission of Worm-gear assembly, and circuit passband is perhaps cut off in conducting.
Be further to realize the optimum efficiency of the utility model, as preferably, said switch module also can be for a plurality of; The shape of said cam can be the wedge angle cam, also can be globoid cam, and on the said cam jackscrew is installed; Said small worm is through the hole interference fit of optical axis and leading screw afterbody.
The beneficial effect of the utility model is: owing to be provided with Worm-gear assembly at the afterbody of leading screw, rotate together so Worm-gear assembly can be followed leading screw; Again owing on the worm-wheel shaft pinion is installed in the Worm-gear assembly; Camshaft is fixed on the housing; Be with cam sleeve on the said camshaft, said pinion is meshed with gear wheel on being installed in cam sleeve, so the cam of installing on the cam sleeve is rotated a certain angle; Contact with sensitive switch is movable, circuit passband is perhaps cut off in conducting.
Description of drawings
According to embodiment and accompanying drawing the utility model is done further explain below.
Fig. 1 is the utility model general structure sketch map;
Fig. 2 is the Worm-gear assembly of the utility model and the partial enlarged drawing of switch module.
Among the figure:
1, telescoping tube; 2, nut; 3, leading screw; 4, small worm; 5, small gear; 6, worm-wheel shaft; 7, sensitive switch; 8, gear wheel; 9, cam; 10, cam sleeve; 11, camshaft; 12, pinion; 13, jackscrew.
Embodiment
Shown in Fig. 1 to 2, the described a kind of electric pushrod limit switch device of the utility model comprises motor, housing, telescoping tube 1; In the process of work, a side of electric pushrod is equipped with motor, the transmission component in motor and the housing; Be that the transmission component that big worm and gear constitutes is connected, can make rotatablely moving of motor change rectilinear motion into like this, rotate thereby drive leading screw 3; Nut 2 is installed on leading screw 3, drives telescoping tube 1 linear reciprocating motion by nut 2, when moving to predeterminated position; Be generally the least limit of the greatest limit that extends or withdrawal, also other position on the leading screw 3, the contact of cam 9 contact sensitive switches 7; Thereby realize the motor outage, stop power being provided for it.
Set forth the contact how cam 9 contacts sensitive switch 7 below, thereby realize the motor outage, stop the technical scheme that provides power to take for it; When work, the motor energising is rotated, and leading screw 3 rotates; The Worm-gear assembly entry into service, the small worm 4 that promptly is installed in the hole of leading screw 3 afterbodys through optical axis rotates, and leading screw 3 is an interference fit with small worm 4; The small gear 5 that is installed on the worm-wheel shaft 6 that is meshed with small worm 4 rotates, and also has pinion 12 on the worm-wheel shaft 6, and pinion 12 is meshed with gear wheel 8 on being installed in cam sleeve 10; Camshaft 11 is fixed on the housing, and cam sleeve 10 rotates on camshaft 11, and camshaft 11 is provided with cam 9; Because of the transmission of Worm-gear assembly, thus camshaft 11 is rotated, and the cam 9 that drive is provided with above that rotates together; So, cam 9 can contact with sensitive switch 7 activities through the transmission of Worm-gear assembly, and circuit passband is perhaps cut off in conducting.
The shape of cam 9 can be the wedge angle cam, also can be globoid cam, and jackscrew 13 is installed on cam 9; Jackscrew 13 can stationary cam 9; Prevent cam 9 on cam sleeve 10 axially with radially relative displacement, angle that can also adjustment cam 9 is provided with two sensitive switches so that contact with the contact of sensitive switch 7; The greatest limit that sensitive switch control extends; The least limit of another sensitive switch control withdrawal, cam touches sensitive switch can realize the moment open circuit, and motor is stopped operating.Therewith in like manner, switch module also can be not limited to greatest limit position and least limit position for a plurality of, can make corresponding adjustment as required.
The used gear of the utility model, cam, worm gear, worm screw; All adopt the high-strength abrasion-proof material to process, increased the useful life of limit switch, its shell is processed by the material of corrosion resistance; Can resist the bad working environment adverse effect, the switch degree of protection is IP66.
Claims (4)
1. electric pushrod limit switch device; Comprise housing, be positioned at transmission component, Worm-gear assembly and the switch module of enclosure interior; It is characterized in that: said Worm-gear assembly comprises through optical axis and is installed in small worm in the hole of leading screw afterbody and the small gear that is meshed with small worm; Said small gear is installed on the worm-wheel shaft, has pinion on the said worm-wheel shaft; Camshaft is fixed on the housing, is with cam sleeve on the said camshaft; Said pinion is meshed with gear wheel on being installed in cam sleeve; Said switch module comprises cam and the sensitive switch that is provided with on the cam sleeve, and said cam can contact with sensitive switch is movable through the transmission of Worm-gear assembly, and circuit passband is perhaps cut off in conducting.
2. a kind of electric pushrod limit switch device according to claim 1 is characterized in that: said switch module also can be for a plurality of.
3. a kind of electric pushrod limit switch device according to claim 1, it is characterized in that: the shape of said cam can be the wedge angle cam, also can be globoid cam, and on the said cam jackscrew is installed.
4. a kind of electric pushrod limit switch device according to claim 1 is characterized in that: said small worm is through the hole interference fit of optical axis and leading screw afterbody.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204207915U CN202275740U (en) | 2011-10-28 | 2011-10-28 | Motor-driven push rod limit switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204207915U CN202275740U (en) | 2011-10-28 | 2011-10-28 | Motor-driven push rod limit switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202275740U true CN202275740U (en) | 2012-06-13 |
Family
ID=46196083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204207915U Expired - Lifetime CN202275740U (en) | 2011-10-28 | 2011-10-28 | Motor-driven push rod limit switch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202275740U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372669A (en) * | 2015-12-04 | 2016-03-02 | 大族激光科技产业集团股份有限公司 | Laser distance-measuring apparatus |
| CN107647891A (en) * | 2017-10-20 | 2018-02-02 | 北京派尔特医疗科技股份有限公司 | A kind of electronic hysteroscope stapler |
-
2011
- 2011-10-28 CN CN2011204207915U patent/CN202275740U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372669A (en) * | 2015-12-04 | 2016-03-02 | 大族激光科技产业集团股份有限公司 | Laser distance-measuring apparatus |
| CN107647891A (en) * | 2017-10-20 | 2018-02-02 | 北京派尔特医疗科技股份有限公司 | A kind of electronic hysteroscope stapler |
| CN107647891B (en) * | 2017-10-20 | 2023-08-29 | 北京派尔特医疗科技股份有限公司 | Electric endoscope anastomat |
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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 | ||
| CP03 | Change of name, title or address |
Address after: 101118 Beijing City, Tongzhou District Song Town Village Bai Fuyuan Industrial Zone Patentee after: Lim tec (Beijing) transmission equipment Limited by Share Ltd Address before: Chongwen District of Beijing city in 100022 guangqumenwai Yuanyangdeyi A1109 Patentee before: Lim tec (Beijing) transmission equipment Co. Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120613 |