CN202768765U - Novel extending-retracting mechanism - Google Patents
Novel extending-retracting mechanism Download PDFInfo
- Publication number
- CN202768765U CN202768765U CN 201220446008 CN201220446008U CN202768765U CN 202768765 U CN202768765 U CN 202768765U CN 201220446008 CN201220446008 CN 201220446008 CN 201220446008 U CN201220446008 U CN 201220446008U CN 202768765 U CN202768765 U CN 202768765U
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- China
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- reverse
- nut
- flighted screw
- screw rod
- connecting rods
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model provides a novel extending-retracting mechanism which comprises a bidirectional screw rod, nuts, connecting rods, shaft pins, pulleys, and a guide groove. The nuts are two in number and are respectively connected with the bidirectional screw rod through threads in different directions on the bidirectional screw rod. The connecting rods are crossed two by two and are movably connected through the pulleys which are arranged in the guide groove. One end of each nut is movably connected with one end of one pair of the crossed connecting rods through one shaft pin, and the other end of the pair of the crossed connecting rods are movably connected with one end of the other pair of the crossed connecting rods. Due to the facts that the screw pitch of the bidirectional screw rod can be precisely set, and the rotating speed of the bidirectional screw rod can be precisely controlled, the purpose of precisely controlling the extending-retracting movement of the mechanism is achieved, and meanwhile the novel extending-retracting mechanism has the advantage of being good in movement stability.
Description
Technical field
The utility model relates to a kind of novel telescopic mechanism.
Background technique
In many occasions, such as the application of numerically controlled wire cutting machine mechanism kinematic, automatic curtain etc., people need to rely on extending means to reach the purpose of the folding or folding and unfolding of object.But present extending means is difficult to accurate control, and the stability of fore and aft motion is good not.
Summary of the invention
The purpose of this utility model provides a kind of can accurately control, and the novel telescopic mechanism of the good stability of fore and aft motion.
In order to achieve the above object, the technical solution of the utility model is: comprise reverse-flighted screw, nut, connecting rod, pivot pin, pulley, guide groove, described nut is two, respectively by on the reverse-flighted screw not in the same way screw thread be connected with reverse-flighted screw, connecting rod intersects in twos and connects by moveable roller, pulley is arranged in the guide groove, one end of each nut is flexibly connected by an end of pivot pin and pair of cross connecting rod respectively, and the other end of this cross link is flexibly connected by pivot pin with another end to cross link respectively.
As improvement of the present utility model, also comprise guide rod and guide sleeve, guide sleeve is two, and guide sleeve is nested with on guide rod, and described guide sleeve is connected with the other end of nut respectively.
As further improvement of the utility model, also comprise motor, described motor is connected with reverse-flighted screw.
Owing to having adopted said structure, so that extending means of the present utility model can make respectively round about motion of nut, thereby drive the link motion that is attached thereto by the rotation of reverse-flighted screw, finally having made pulley produce fore and aft motion along guide groove.Because the pitch on the reverse-flighted screw can accurately arrange and the rotational speed of reverse-flighted screw can accurately be controlled, thereby can reach the purpose of accurate control mechanism fore and aft motion, the utility model also has the good beneficial effect of stability of motions simultaneously.
Description of drawings
Fig. 1 is the schematic diagram of a kind of mode of execution of the utility model novel telescopic mechanism.
Embodiment
By shown in Figure 1, novel telescopic of the present utility model mechanism comprises reverse-flighted screw 1, nut 2 and 2 ', connecting rod 3,4,5,6, pivot pin 7,8,9,10, pulley 11 and 12, guide groove 13, described nut 2 and 2 ' respectively by on the reverse-flighted screw 1 not in the same way screw thread 14,15 be connected connecting rod 3 and 4 with reverse-flighted screw 1,5 and 6 intersect in twos and are flexibly connected by pulley 11 and 12, pulley 11 and 12 is arranged in the guide groove 13, and nut 2 and an end of 2 ' are flexibly connected by the end of pivot pin 7,8 with pair of cross connecting rod 3 and 4 respectively, this cross link 3 and 4 the other end are flexibly connected by pivot pin 9,10 with another end to cross link 5 and 6 respectively.The utility model also comprises guide rod 16 and guide sleeve 17 and 18, and guide sleeve 17 and 18 is nested with on guide rod 16, described guide sleeve 17 with are connected respectively with nut 2 with are connected ' the other end be connected.The utility model also comprises motor 19, and described motor 19 is connected with reverse-flighted screw 1.
Owing to adopted said structure, so that extending means of the present utility model can by the rotation of reverse-flighted screw 1, make respectively round about motion of nut 2 and 2 ', thereby drive the connecting rod 3,4,5 that is attached thereto, 6 motions finally make pulley 11 and 12 produce fore and aft motion along guide groove 13.Because the screw thread 11 on the reverse-flighted screw 1 and 12 pitch can accurately arrange and the rotational speed of reverse-flighted screw 1 can accurately be controlled, thereby can reach the purpose of accurate control mechanism fore and aft motion, simultaneously 16 pairs of guide sleeves 17 of guide rod and 18 leading role can make the motion of nut 2 and 2 ' more steady.Motor 19 clockwise and anticlockwise can realize the automatic rotation of reverse-flighted screw 1, thereby realize fore and aft motion.
Claims (3)
1. novel telescopic mechanism, it is characterized in that, comprise reverse-flighted screw, nut, connecting rod, pivot pin, pulley, guide groove, described nut is two, respectively by on the reverse-flighted screw not in the same way screw thread be connected with reverse-flighted screw, connecting rod intersects in twos and connects by moveable roller, pulley is arranged in the guide groove, one end of each nut is flexibly connected by an end of pivot pin and pair of cross connecting rod respectively, and the other end of this cross link is flexibly connected by pivot pin with another end to cross link respectively.
2. according to claim 1 a kind of novel telescopic mechanism is characterized in that, also comprise guide rod and guide sleeve, guide sleeve is two, and guide sleeve is nested with on guide rod, and described guide sleeve is connected with the other end of nut respectively.
3. according to claim 1 or 2 a kind of novel telescopic mechanism, it is characterized in that, also comprise motor, described motor is connected with reverse-flighted screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220446008 CN202768765U (en) | 2012-08-24 | 2012-08-24 | Novel extending-retracting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220446008 CN202768765U (en) | 2012-08-24 | 2012-08-24 | Novel extending-retracting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202768765U true CN202768765U (en) | 2013-03-06 |
Family
ID=47775341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220446008 Expired - Fee Related CN202768765U (en) | 2012-08-24 | 2012-08-24 | Novel extending-retracting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202768765U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841707A (en) * | 2017-04-05 | 2017-06-13 | 深圳市安思科电子科技有限公司 | Display effect is good and can automatically adjust the intelligent relay-protection tester of angle |
-
2012
- 2012-08-24 CN CN 201220446008 patent/CN202768765U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841707A (en) * | 2017-04-05 | 2017-06-13 | 深圳市安思科电子科技有限公司 | Display effect is good and can automatically adjust the intelligent relay-protection tester of angle |
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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: 20130306 Termination date: 20130824 |