CN201181423Y - Actuator with fine adjustment type limit switch - Google Patents
Actuator with fine adjustment type limit switch Download PDFInfo
- Publication number
- CN201181423Y CN201181423Y CNU2008200008569U CN200820000856U CN201181423Y CN 201181423 Y CN201181423 Y CN 201181423Y CN U2008200008569 U CNU2008200008569 U CN U2008200008569U CN 200820000856 U CN200820000856 U CN 200820000856U CN 201181423 Y CN201181423 Y CN 201181423Y
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- CN
- China
- Prior art keywords
- limit switch
- actuator
- screw rod
- fine adjustment
- drive link
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- Expired - Fee Related
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- Push-Button Switches (AREA)
Abstract
The utility model relates to an actuator with a finely adjustable limit switch. At least more than one limit switch is arranged inside the actuator, an accommodating space for accommodating a screw rod and a transmission rod is formed inside the casing of the actuator, a positioning groove capable of accommodating the limit switches and a screw hole passing through the casing are arranged on one side of the accommodating space, the transmission rod is driven by the forward and reverse rotations of the screw rod to perform linear reciprocating displacement, the limit switches are positioned on the displacement path on the transmission rod, a press key is arranged above the base of each limit switch, a fine adjustment device is arranged on one side of the base, an internal screw thread allowing the screw rod to pass through is formed inside the fine adjustment device, and a shaft portion and an adjustment portion are arranged on the two sides of the screw rod respectively. By the above structure design, a user can rotate the adjustment portion of the fine adjustment device to make the fine adjustment device and the base thereof to conduct reciprocating displacement via the engagement structure of the internal screw thread and the screw rod, so as to adjust the relative distance between two limit switches and further accurately and finely adjust the relative positions of the limit switches, thereby finely adjusting the reciprocating displacement of the transmission rod.
Description
Technical field
The utility model refers to especially that for a kind of actuator with the fine adjustment type limit switch is provided two limit switches in the actuator can accurately be finely tuned its relative distance, and then can the accurate actuator of adjusting the shift reciprocately amount of drive link.
Background technology
In the mechanism of many linear transmission strokes, as electric hospital bed, treadmill, aspects such as folding bed, with the adjustment of limit switch as the position, be suitable common with popularize, the start position of its linear transmission stroke and final position, must the limit of utilization switch as the journey of going of linear course, the control of backhaul, and make limit switch be installed in the initial point position and the sink node position of linear path respectively, when mechanism goes the Cheng Hangjin displacement with linear transmission, and the touching final position limit switch the time, can change the backhaul displacement into by switching mechanism, when if mechanism touches the limit switch of starting point when the backhaul displacement, switching mechanism changes Cheng Weiyi into once more, so forms linear shift reciprocately action.
See also shown in Figure 6, it is the synoptic diagram of prior art limit switch, find out by knowing among the figure, the linear actuator of prior art mainly includes gearing A, two limit switch B, when the drive link A1 of gearing A is shift reciprocately by screw rod A2 driving, the A11 of the portion that presses on its drive link A1 can be for the limit switch B that compresses the beginning or end position respectively, if press the limit switch B that the A11 of portion compresses starting point, just can notify drive link A1 to move forward, if compress the limit switch B of terminal point, then notify drive link A1 to reset, make drive link A1 can form reciprocal spacing displacement with this, yet, still have following shortcoming in the actual use of this kind structural design:
(1) the shift reciprocately amount of this drive link A1 is to go to control by the relative distance of two limit switch B, but the relative distance between this two limit switch B is to be arranged on the fixed position by welding, can not change the position of limit switch B, and cause drive link A1 only can do moving of same displacement amount at every turn, still restricted greatly on using.
(2) from the above, the specification of adding various linear actuators is neither together, so the assembly position of each limit switch B may not be identical, so, manufacturer must design the gearing A of the various drive link A1 of multiple correspondence displacement, and causes the product inventory problem of management and hoard pressure.
(3) again because gearing A after permanent use, can produce the situation of rocking or being offset between its drive link A1 and the screw rod A2 unavoidably takes place, so, drive link A1 presses the position of limit switch B may not be accurate, possible a little error, and cause difference in the use, and add limit switch B position can not adjust, make this kind structural design still have very big room for improvement.
Be with, how to solve the prior art limit switch can arbitrarily change position and drive link displacement in assembling, when using problem, be the direction place that the relevant manufacturer that is engaged in the industry desires most ardently the research improvement.
Summary of the invention
So the inventor is to collect related data because above-mentioned shortcoming, via assessing in many ways and consider, and engaging in the many years of experience of the industry accumulation, via constantly studying and revise, the beginning is designed actuator novel of this kind band fine adjustment type limit switch.
The actuator of band fine adjustment type limit switch of the present utility model, it is the limit switch that in actuator, is provided with at least more than one, wherein the enclosure interior of this actuator is formed with for the accommodation space of accommodating screw rod and drive link, and screw rod is linear shift reciprocately by the positive and negative driving drive link of transferring, limit switch then is positioned on the displacement path of drive link, wherein, accommodation space one side of this actuator is provided with for the locating slot of accommodating limit switch, and locating slot one side is provided with axis hole, and locating slot side in addition then is provided with the screw that runs through housing; This limit switch is positioned at locating slot, and the pedestal of limit switch top is provided with button, and be provided with micromatic setting in pedestal one side, and micromatic setting inside is formed with the internal thread that can supply screw rod to wear, and being provided with the axial region that is positioned at axis hole in screw rod one side, screw rod side in addition then is provided with the adjustment part that is positioned at screw.
Major advantage of the present utility model is to be that limit switch can be housed in the interior locating slot of actuator, after the user only must rotate the adjustment part of micromatic setting, can make limit switch in locating slot, be shift reciprocately by the engaging structure of screw thread, screw rod, the user can more accurate fine setting limit switch relevant position, and then can the accurate shift reciprocately amount of adjusting drive link.
Description of drawings
Fig. 1 is the three-dimensional appearance synoptic diagram of the utility model preferred embodiment;
Fig. 2 is the perspective exploded view of the utility model preferred embodiment;
Fig. 3 is the three-dimensional appearance synoptic diagram of the utility model limit switch;
Fig. 4 is the side-looking diagrammatic cross-section of the utility model limit switch;
Fig. 5 is the synoptic diagram () of the utility model preferred embodiment when using;
Fig. 6 is the synoptic diagram (two) of the utility model preferred embodiment when using;
Fig. 7 is the synoptic diagram of prior art limit switch.
Description of reference numerals:
The 1-actuator; The 10-accommodation space; The 11-housing; The 12-motor; The 121-worm screw; The 13-screw rod; The 131-worm gear; The 14-drive link; The 141-internal thread; The 142-pushing block; The 15-locating slot; The 151-axis hole; The 152-screw; The 16-open-work; The 161-transparent panel; The 162-scale; The 17-socket part; The 18-metal collar;
The 2-limit switch; The 21-pedestal; The 22-button; 23-electrode pin; The 24-micromatic setting; The 241-internal thread; The 242-screw rod; The 243-axial region; The 244-adjustment part;
The A-gearing; The A1-drive link; A11-presses portion; The A2-screw rod; The B-limit switch.
Embodiment
For reaching above-mentioned purpose and effect, technological means that the utility model adopted and structure thereof, drawing now illustrates in detail that with regard to preferred embodiment of the present utility model its feature and function are as follows, in order to understanding fully.
See also Fig. 1 to shown in Figure 4, it is respectively three-dimensional appearance synoptic diagram, perspective exploded view, the three-dimensional appearance synoptic diagram of limit switch and the side-looking diagrammatic cross-section of limit switch of the utility model preferred embodiment, find out by knowing among the figure, the utility model is the limit switch 2 that is provided with at least more than one in actuator 1, wherein:
This actuator 1 is the motor 12 that is provided with tool worm screw 121 in housing 11 1 sides, and housing 11 inside are formed with can be for the accommodation space 10 of accommodating screw rod 13 and drive link 14, and be provided with worm gear 131 with worm screw 121 engagement in screw rod 13 1 sides, screw rod 13 other sides then are equipped with the drive link 14 of tool internal thread 141, and drive link 14 surfaces are provided with pushing block 142, accommodation space 10 1 sides in housing 11 are provided with locating slot 15 in addition, and locating slot 15 1 sides are provided with axis hole 151, and side then is provided with the screw 152 that runs through housing 11 in addition; Moreover housing 11 offers open-work 16 with respect to the surface at locating slot 15 places, and open-work 16 can be for being equipped with transparent panel 161, and is provided with scale 162 in open-work 16 1 sides.
This limit switch 2 is provided with the button 22 that triggers its running above pedestal 21, pedestal 21 belows then are provided with a plurality of electrode pin 23, and be positioned with micromatic setting 24 in pedestal 21 1 sides, these micromatic setting 24 inside are formed with the internal thread 241 that can supply screw rod 242 to wear, and being provided with axial region 243 in screw rod 242 1 sides, screw rod 242 sides in addition then is provided with adjustment part 244.
Moreover, above-mentioned each member is when assembling, earlier screw rod 13 is penetrated in the internal thread 141 that is engaged in drive link 14, put into the accommodation space 10 of housing 11 again, and the worm gear 131 of screw rod 13 other sides and the worm screw 121 of motor 12 are meshing with each other, limit switch 2 is then put into the locating slot 15 of housing 11, screw rod 242 axial regions 243 of micromatic setting 24 are positioned in the axis hole 151, screw rod 242 adjustment part 244 of side in addition then is positioned at screw 152, make pushing block 142 places of the button 22 of limit switch 2 corresponding to drive link 14, in addition, the open front of this housing 11 has a socket part 17, and socket part 17 can be used for a metal collar 18 sockets, strengthens whole assembling intensity with this, can finish overall package of the present utility model.
Please consult Fig. 2 simultaneously to shown in Figure 6, it is respectively the perspective exploded view of the utility model preferred embodiment, the three-dimensional appearance synoptic diagram of limit switch, the side-looking diagrammatic cross-section of limit switch, synoptic diagram (one) and the synoptic diagram (two) of preferred embodiment when using, find out by knowing among the figure, when motor 12 drives worm screw 121 rotations, can drive the worm gear 131 that meshes with worm screw 121 rotates simultaneously, and screw rod 13 also can pass through worm gear 131 synchronous starts, make drive link 14 be the shift reciprocately of linearity by the internal thread 141 and the engagement driving of screw rod 13, limit switch 2 then cooperates the straight-line displacement path of the pushing block 142 of drive link 14, is electrically connected at the initial point position and the place, final position of rectilinear path respectively with electrode pin 23.
When screw rod 13 drives the shift reciprocately stroke of drive link 14 work linearities, if pushing block 142 catatrepsis of drive link 14 are to terminal during the position, then pushing block 142 can touch the button 22 of position at the limit switch 2 of destination county, motor 12 is shut down, and then guarantee the destination county that drive link 14 puts in place at last, avoid drive link 14 over-travel and break away from screw rod 13; If screw rod 13 reverse runnings and when driving drive link 14 and resetting, 142 of the pushing blocks of its drive link 14 return the initial point position place, and make pushing block 142 touch the button 22 of position at the limit switch 2 at starting point place, and notice motor 12 shuts down, drive link 14 is resetted really, prevent that drive link 14 from crossing limit switches 2 and locked with this, cause worm gear 131 to move and collapse tooth with screw rod 13.
And the initial point position of above-mentioned limit switch 2 or final position can be different according to demand of using or design, and can adjust the relative distance of two limit switches 2 arbitrarily, the adjustment part 244 of main rotatable micromatic setting 24, just changeing or reversing to drive screw rod 242, when the screw rod 242 with internal thread 241 engagements rotates, can drive micromatic setting 24 and pedestal 21 displacement together thereof, when so the user desires the relative distance of conversion two limit switches 2, only need to have by hand the adjustment part 244 of rotating screw bolt 242 1 sides, make limit switch 2 can tune to suitable position.
Be with, the open-work 16 of this housing 11 can be corresponding to the limit switch 2 in the locating slot 15, the user can find out the position that limit switch 2 is present by transparent panel 161, when so the user finely tunes the position of limit switches 2 by adjustment part 244 drive screws 242, just can learn the position of limit switch 2 by open-work 16, and the scale 162 of open-work 16 belows, can allow the user accurately finely tune its relative position, so can reach the structure of aforementioned effect such as, device is contained by the utility model all should, simple and easy modification of this kind and equivalent structure change, all should in like manner be contained in the claim of the present utility model, the spy adds and is illustrated in this.
The actuator of above-mentioned the utility model band fine adjustment type limit switch when reality is used, for can having following advantage, as:
The utility model can be according to the design of actuator or user demand and is finely tuned the position of limit switch 2 arbitrarily, the user only must rotate the adjustment part 244 of micromatic setting 24, make micromatic setting 24 and pedestal 21 thereof be shift reciprocately by the engaging structure of internal thread 241, screw rod 242, adjust the relative distance of two limit switches 2 with this, and the open-work 16 and the scale 162 that are aided with housing 11 design, the user can more accurate fine setting limit switch 2 relevant position, and then can the accurate shift reciprocately amount of adjusting drive link 14.
So; the utility model is to be primarily aimed at the screw rod 242 of limit switch 2 by micromatic setting 24 to drive and can finely tune to shift one's position arbitrarily in housing 11 locating slots 15 and be main key protection point; and the structural design of above-mentioned actuator 1 is an example with the drives structure of worm gear, worm screw mainly; but the utility model is when practical application; then be not to be to exceed with the drives structure of worm gear, worm screw; also can be applicable in the mechanism of other linear transmissions, only need make limit switch 2 can adjust the position arbitrarily.
Above embodiment only is preferred embodiment of the present utility model, and it is illustrative for the utility model, and nonrestrictive.Those skilled in the art carries out conversion, modification even equivalence to it under the situation that does not exceed the utility model spirit and scope, these changes all can fall into claim protection domain of the present utility model.
In sum, the actuator of the utility model band fine adjustment type limit switch has obvious effect when using promotes, and really meets novelty, practicality and creationary patent requirement, files an application in accordance with the law.
Claims (8)
1, a kind of actuator with the fine adjustment type limit switch, it is the limit switch that in actuator, is provided with at least more than one, wherein the enclosure interior of this actuator is formed with for the accommodation space of accommodating screw rod and drive link, and screw rod is linear shift reciprocately by the positive and negative driving drive link of transferring, limit switch then is positioned on the displacement path of drive link, it is characterized in that:
Accommodation space one side of this actuator is provided with for accommodating the locating slot of limit switch, and locating slot one side is provided with axis hole, and locating slot side in addition then is provided with the screw that runs through housing;
This limit switch is positioned at locating slot, and the pedestal of limit switch top is provided with button, and be provided with micromatic setting in pedestal one side, and micromatic setting inside is formed with the internal thread that can supply screw rod to wear, and being provided with the axial region that is positioned at axis hole in screw rod one side, screw rod side in addition then is provided with the adjustment part that is positioned at screw.
2, the actuator of band fine adjustment type limit switch according to claim 1 is characterized in that, this actuator one side is provided with the motor of tool worm screw, and is provided with worm gear with worm mesh in screw rod one side.
3, the actuator of band fine adjustment type limit switch according to claim 1 is characterized in that, this drive link inside has the internal thread with screw engages.
4, the actuator of band fine adjustment type limit switch according to claim 1 is characterized in that, this drive link surface is provided with the pushing block that can touch the limit switch button.
5, the actuator of band fine adjustment type limit switch according to claim 1 is characterized in that, the pedestal below of this limit switch is provided with a plurality of electrode pin.
6, the actuator of band fine adjustment type limit switch according to claim 1 is characterized in that, this housing offers open-work with respect to the surface at locating slot place.
7, the actuator of band fine adjustment type limit switch according to claim 6 is characterized in that, this open-work is equipped with transparent panel.
8, the actuator of band fine adjustment type limit switch according to claim 6 is characterized in that, this open-work one side is provided with scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200008569U CN201181423Y (en) | 2008-03-13 | 2008-03-13 | Actuator with fine adjustment type limit switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200008569U CN201181423Y (en) | 2008-03-13 | 2008-03-13 | Actuator with fine adjustment type limit switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201181423Y true CN201181423Y (en) | 2009-01-14 |
Family
ID=40250921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200008569U Expired - Fee Related CN201181423Y (en) | 2008-03-13 | 2008-03-13 | Actuator with fine adjustment type limit switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201181423Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020029330A1 (en) * | 2018-08-07 | 2020-02-13 | 深圳市一么么科技有限公司 | Limiting structure and adjustable linear driver for electric furniture using structure |
-
2008
- 2008-03-13 CN CNU2008200008569U patent/CN201181423Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020029330A1 (en) * | 2018-08-07 | 2020-02-13 | 深圳市一么么科技有限公司 | Limiting structure and adjustable linear driver for electric furniture using structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090114 Termination date: 20130313 |