CN101709770B - Transmission mechanism - Google Patents
Transmission mechanism Download PDFInfo
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- CN101709770B CN101709770B CN 200910088461 CN200910088461A CN101709770B CN 101709770 B CN101709770 B CN 101709770B CN 200910088461 CN200910088461 CN 200910088461 CN 200910088461 A CN200910088461 A CN 200910088461A CN 101709770 B CN101709770 B CN 101709770B
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- transmission nut
- roller
- thread
- transmission
- driving mechanism
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Abstract
The invention relates to a transmission mechanism which comprises a transmission screw, an external thread is arranged at one end, a plurality of platforms are processed on the other end which is cylindrical, and the platforms and the inner diameter of the transmission nut form a wedge angle; the transmission mechanism further comprises a transmission nut, and the revolving direction of an internal thread is consistent with that of the external thread of the transmission screw; the external thread of the transmission screw is meshed with the internal thread of the transmission nut; a roller or a rolling ball is mounted on each platform, a spring is mounted between each roller or the rolling ball and the side wall of the corresponding platform, and the springs prop against the rollers or the rolling balls; bearings are respectively sheathed at two ends on the outside of the transmission nut; and the transmission mechanism is mounted in a bearing seat through the bearings. The transmission mechanism can solve the problems that the spiral transmission can only transfer the axial displacement and can not transfer the torque, while an overrunning clutch can only transfer the torque and can not transfer the axial displacement.
Description
Technical field
The present invention relates to a kind of driving mechanism, specifically, relate to a kind of forward rotation (oppositely) transmitting torque, oppositely (forward) rotates the driving mechanism of realizing axial motion.
Background technique
In the present driving mechanism, a kind of is that forward (or oppositely) rotates driving torque, and oppositely (or forward) rotates for idle running, as free wheel device.One end axis hole of general free wheel device connects driving shaft, and the other end axis hole of free wheel device connects driven shaft.When driving shaft rotated, driven shaft also rotated synchronously; When the time spent of doing that driven shaft is subjected to moment of face, clockwise and all can not rotate counterclockwise, can not realize axial motion.This free wheel device is commonly used for and prevents reversing gearbox.
Another kind of transmission is that clockwise and anticlockwise all realizes axial motion, but can not carry-over moment, as power screw.Helical rotation is to utilize the engagement of screw rod and nut to come the mechanism of transferring power and motion, utilizes the engagement of screw rod and nut to come the mechanical transmission of transferring power and motion.Being mainly used in to rotatablely move converts straight line motion to, and torque conversion is become thrust.
Summary of the invention
The object of the present invention is to provide a kind of driving mechanism, power screw and free wheel device are designed to one, simultaneously realizable forward rotation (oppositely) transmitting torque, oppositely (forward) rotates and realizes axial motion, to overcome the single of existing driving mechanism type of belt drive.
For achieving the above object, driving mechanism provided by the invention, it mainly comprises:
One drive screw, one end are outside thread, and the other end is cylindrical and it processes at least three equiangularly arranged platforms, and those platforms and transmission nut internal diameter all form an angle of wedge;
Transmission nut, its internal thread rotation direction is consistent with the drive screw outside thread;
The outside thread of described drive screw is meshed with the internal thread of transmission nut;
One roller or ball respectively are installed on those platforms, spring are installed between the sidewall of roller or ball and platform, this spring is replaced roller or ball, roller one well matched two springs;
Each sheathed bearing of two ends, the transmission nut outside;
Described driving mechanism by described Bearing Installation in supporting base.
In the driving mechanism of the present invention, the outside thread of drive screw and the internal thread of transmission nut are left-handed thread or are right-handed thread.
The invention has the beneficial effects as follows:
1) solved power screw and can only transmit axial displacement, problem that can not carry-over moment;
2) having solved free wheel device can only carry-over moment, can not transmit the problem of axial displacement.
Description of drawings
Fig. 1 is the generalized section of driving mechanism of the present invention.
Fig. 2 is the schematic perspective view of driving mechanism of the present invention.
Fig. 3 is that the A of Fig. 1 is to view.
Fig. 4 is the structural representation of transmission nut of the present invention.
Fig. 5 is the structural representation of drive screw of the present invention.
Main mark explanation in the accompanying drawing
The 1-drive screw; The 2-supporting base; 3-roller (or ball); The 4-transmission nut; The 5-bearing; The 6-spring.
Embodiment
Please in conjunction with shown in Figure 1.The present invention has a drive screw 1, the one end is an outside thread, the other end be cylindrical and its on process a plurality of platforms 11, the visual concrete condition increase and decrease of the concrete quantity of platform, can increase platform quantity when big or frequency of utilization is higher in carry-over moment, otherwise can suitably reduce platform quantity, but platform quantity should not be less than three, and be equal angular arrangement.The internal diameter of those platforms and transmission nut 4 all forms an angle of wedge 12 (seeing also Fig. 3 and Fig. 5).Self-locking, unlikely skidding when transmitting torque take place in the size of the angle of wedge roller (ball) of should not making peace when power screw.
The internal diameter of transmission nut 4 of the present invention has internal thread (seeing also Fig. 4), and the rotation direction of this internal thread is consistent with the externally threaded rotation direction of drive screw 1, perhaps is left-handed thread, perhaps is right-handed thread.
Roller or ball 3 are installed on each platform of screw rod 1, between each roller or ball 3 and mesa sidewalls, spring 6 are installed, make roller or ball 3 be subjected to this spring 6 and replace.If the employing roller, then each roller is joined two springs, if adopt ball then a ball is joined a spring (Figure 5 shows that roller, disposed two springs).
The place, two ends of transmission nut 4 respectively is equipped with a bearing 5, and transmission nut 4 places in the supporting base 2 by these bearing 5 integral body, and it is free that driving mechanism of the present invention is rotated in supporting base 2.Overall appearance of the present invention as shown in Figure 2.
When (pressing the page of Fig. 3) along clockwise direction under the effect of transmission nut 4 at applied moment and rotate, roller 3 tip to the angle of wedge 12 under the effect of spring 6 and transmission nut 4 inwalls produces wedging power, drive drive screw 1 and clockwise rotate together, realize the motion of carry-over moment.
When (pressing the page of Fig. 3) in the counterclockwise direction under the effect of transmission nut 4 at applied moment and rotate, roller 3 under the effect of transmission nut 4 inwalls to the big end motion of the angle of wedge, wedging power is disappeared, the transmission of the two becomes pure power screw, drive screw 1 is moved vertically, realize transmitting the motion of axial displacement.
If the screw thread of transmission nut 4 and drive screw 1 is the dextrorotation setting, can realize above-mentioned reversing motion.
Claims (4)
1. driving mechanism, it mainly comprises:
One drive screw, one end are outside thread, and the other end is cylindrical and it processes at least three equiangularly arranged platforms, and those platforms and transmission nut internal diameter all form an angle of wedge;
Transmission nut, its internal thread rotation direction is consistent with the drive screw outside thread;
The outside thread of described drive screw is meshed with the internal thread of transmission nut;
One roller or ball respectively are installed on those platforms, between the sidewall of roller or ball and platform spring are installed, this spring is replaced roller or ball;
The size of the angle of wedge should when power screw, not make peace roller or ball generation self-locking, unlikely skidding when transmitting torque;
Each sheathed bearing of two ends, the transmission nut outside;
Described driving mechanism by described Bearing Installation in supporting base.
2. driving mechanism as claimed in claim 1, wherein, the outside thread of described drive screw and the internal thread of transmission nut are left-handed thread.
3. driving mechanism as claimed in claim 1, wherein, the outside thread of described drive screw and the internal thread of transmission nut are right-handed thread.
4. driving mechanism as claimed in claim 1, wherein, a roller is joined two springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910088461 CN101709770B (en) | 2009-07-01 | 2009-07-01 | Transmission mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910088461 CN101709770B (en) | 2009-07-01 | 2009-07-01 | Transmission mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101709770A CN101709770A (en) | 2010-05-19 |
| CN101709770B true CN101709770B (en) | 2011-06-15 |
Family
ID=42402570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910088461 Active CN101709770B (en) | 2009-07-01 | 2009-07-01 | Transmission mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101709770B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401101A (en) * | 2010-09-10 | 2012-04-04 | 张旸斌 | Sliding block with twisting capability |
| CN106499523B (en) * | 2016-11-30 | 2019-06-25 | 北京航科发动机控制系统科技有限公司 | A kind of achievable axial clutch and the circumferential attachment device being accurately driven |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2340120Y (en) * | 1998-07-14 | 1999-09-22 | 厦门大学 | Nanometer-grade linear electric motor |
| JP2007032611A (en) * | 2005-07-22 | 2007-02-08 | Nippei Toyama Corp | Torque adjusting bolt |
| JP2007100923A (en) * | 2005-10-07 | 2007-04-19 | Denso Corp | Power transmission device |
| CN201076977Y (en) * | 2007-07-31 | 2008-06-25 | 深圳市创唯星自动化设备有限公司 | Stabile displacement mechanism for welding device |
| CN100453851C (en) * | 2004-03-05 | 2009-01-21 | 密尔沃基电动工具公司 | Rotation output unit |
-
2009
- 2009-07-01 CN CN 200910088461 patent/CN101709770B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2340120Y (en) * | 1998-07-14 | 1999-09-22 | 厦门大学 | Nanometer-grade linear electric motor |
| CN100453851C (en) * | 2004-03-05 | 2009-01-21 | 密尔沃基电动工具公司 | Rotation output unit |
| JP2007032611A (en) * | 2005-07-22 | 2007-02-08 | Nippei Toyama Corp | Torque adjusting bolt |
| JP2007100923A (en) * | 2005-10-07 | 2007-04-19 | Denso Corp | Power transmission device |
| CN201076977Y (en) * | 2007-07-31 | 2008-06-25 | 深圳市创唯星自动化设备有限公司 | Stabile displacement mechanism for welding device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101709770A (en) | 2010-05-19 |
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