CN201982482U - Stepless adjustment and locking structure for mechanical joint angle - Google Patents
Stepless adjustment and locking structure for mechanical joint angle Download PDFInfo
- Publication number
- CN201982482U CN201982482U CN2011200683170U CN201120068317U CN201982482U CN 201982482 U CN201982482 U CN 201982482U CN 2011200683170 U CN2011200683170 U CN 2011200683170U CN 201120068317 U CN201120068317 U CN 201120068317U CN 201982482 U CN201982482 U CN 201982482U
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- joint
- torsion spring
- joint arm
- angle
- arm
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Abstract
The utility model aims to provide an adjustment and locking structure capable of achieving bi-directional self-locking, which has a simpler structure, can achieve the stepless angle adjustment in two rotation direction, and has a self-locking function. In order to achieve the effects, the stepless adjustment and locking structure for mechanical joint angle comprises a first joint arm, a second joint arm and a connecting part, wherein the connecting part comprises a joint shaft which transversely penetrates through the first joint arm and is fixedly connected with the first joint arm, and a double-torsion spring is sleeved on the joint shaft; and a middle force part of the double-torsion spring is connected with a manipulator on the second joint arm, and extending parts at the two sides of the double-torsion spring are fixed on the second joint arm. With the structure, an angle between the two joint arms can be steplessly adjusted along the clockwise direction and the anticlockwise direction of the joint shaft, and the bi-directional locking for the adjusted angle can be completed by utilizing the mechanism after adjustment so as to achieve the stepless adjustment and locking functions of the mechanical joint angle.
Description
Technical field
The utility model relates to a kind of mechanical joint, relates in particular to stepless adjustment of a kind of mechanical joint angle and locking structure.
Background technique
In the modern mechanical structure, run into the parts that need to adopt adjusting rotation angle and location through regular meeting.Comprise the chaise longue not high, perhaps very high mechanical arm to positioning accuracy request to positioning requirements.The mode of joint angles adjustment used in the prior art and location roughly has following several:
1, the turning joint both sides connect by profile of tooth, as ratchet mechanism.The advantage of this mechanism is simple in structure, and cost is low, and is easy to maintenance, but the restriction of profile of tooth generally can not realize stepless angular adjustment.
2, turning joint bi-side friction, as gimbal structure, such structure can reach stepless angular adjustment, but the moment of torsion that shortcoming is the both sides, joint can bear is little, when bearing bigger moment of torsion, need add break in addition the joint is locked.
3, with respect to above two kinds of situations, also having application number in the prior art is " 200910103176.9 " disclosed patent of invention " torsional spring type stepless angle regulation positioning device ".This invention relates to torsional spring type stepless angle regulation positioning device.Be provided with first in the first axle body box bottom and insert the axle hole, be provided with first through hole in first gland box bottom; It is characterized in that: by first axle sleeve, first multidiameter shaft, be located in the first joint box with torsion spring angle regulation positioning device that first torsion spring that big end cooperates and an end is fixing of the outside of first axle sleeve and first multidiameter shaft is formed; In the big end of first multidiameter shaft and the first axle body box first inserted axle hole stationary fit, and first through hole and the first multidiameter shaft small end that first screw passes the first gland box bottom centre are connected; The free end of first torsion spring contacts with the shifting block of first toggle mechanism along the inboard of curling up direction.Have the following advantages: owing to adopted common torsion spring structure, utilize tightening and unclamping and regulate rotation angle of torsion spring, so step-less adjustment apace, the location is reliable.In the prior art, this model utility can play the effect of the stepless adjustment of angle really.But anatomizing the back finds, in the disclosed technological scheme of this model utility: " when need are regulated counterclockwise the angle of second link arm and position; only with hand is pulled second link arm in the counterclockwise direction and got final product to the position ", this technical characteristics illustrates that this scheme only depends on little frictional force location in described counter clockwise direction, and can not lock, promptly mechanism has only the monodirectional locking function, can not realize two-way locking, and overall structure is complicated, has improved production cost of products.And we need be a kind of more simple, also a kind of more widely structure of purposes.
The model utility content
The purpose of this utility model provides a kind of structure more simply can the fixed adjustment locking structure of bidirectional self-locking, can all reach stepless angular adjustment on the both direction of rotation, and possesses the function from locking.
For reaching described effect, the utility model stepless adjustment of a kind of mechanical joint angle and locking structure, comprise first joint arm, second joint arm and the joint that is used to connect first joint arm and second joint arm, described joint comprises the joint shaft that passes across first joint arm and fixedly connected with first joint arm, be socketed with torsion spring on the described joint shaft, and when the torsion spring free state, interference fit between its endoporus and the joint shaft, forced section links to each other with manipulator on the second joint arm in the middle of the torsion spring, manipulator can be the torsion spring forced section steering force is provided, and the extension of torsion spring both sides is fixed on the second joint arm.
Preferably, described manipulator is the rim brake that is fixed on the second joint arm, and rim brake links to each other with the forced section of torsion spring by drag-line.Can apply a steering force to forced section by rim brake and drag-line like this, to realize two angle stepless transformations between the joint arm.
Preferably, described manipulator is the button that is fixed on the second joint arm, and button connects pushing block, and pushing block is connected on the forced section of torsion spring.Can apply a steering force to forced section by button and pushing block like this, to realize two angle stepless transformations between the joint arm.
Preferably, described manipulator is the electromagnet that is fixed on first joint arm, and electromagnet acts on the forced section of torsion spring.Can apply a steering force to the forced section of torsion spring by electromagnet like this, realize the stepless transformation of angle between two joint arms.
Preferably, the section of steel wire of described torsion spring is a rectangle.Such structure increases the surface of contact between torsion spring and the axle, has also just increased the bearing capacity of joint.
Preferably, the forced section on the described torsion spring stretches out from the tangent direction of torsion spring both sides circumference, and perpendicular with manipulator application of force direction.Such structure is to reduce to handle resistance.
Preferably, the extension and the torsion spring both sides helix of described torsion spring both sides are perpendicular.Stress-bearing capability when such structure has increased fixedly makes total more reliable and stable.
Owing to adopted described technological scheme, torsion spring is socketed on two joint shafts between the joint arm, operate by manipulator, for torsion spring provides the power that torsion spring is unscrewed, torsion spring is unscrewed, and the torsion spring internal diameter increases, and makes between axle and the torsion spring and can rotate freely, can freely rotate two joint arms this moment relatively, infinitely adjusts two angles between the joint arm.
When the angular adjustment between two joint arms puts in place, remove steering force, torsion spring screws under the elastic force effect, internal diameter diminishes, produce positive pressure between axle and torsion spring inwall, when in a single day between first joint arm and the second joint arm relative movement trend being arranged at this moment, under the frictional force action between spring inwall and the joint shaft, because the spring Hand of spiral of torsion spring forced section both sides is opposite, therefore no matter the relative movement trend between first joint arm and the second joint arm is clockwise direction or counterclockwise, always make and embrace tighter and tighter between the spring of torsion spring one side and the joint shaft, final spring is realized the lock function to axle with the joint shaft locking.
Can make the angle between two joint arms both can also can be by such structure along joint shaft stepless adjustment counterclockwise along the clockwise direction of joint shaft, can utilize this mechanism that institute's hue angle is finished two-way locking after the adjustment, realize the function of stepless adjustment of mechanical joint angle and locking.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 is the structural representation of the utility model stepless adjustment of a kind of mechanical joint angle and locking structure.
Fig. 2 is the utility model stepless adjustment of a kind of mechanical joint angle and locking structure embodiment's 1 a structural representation.
Fig. 3 is the utility model stepless adjustment of a kind of mechanical joint angle and locking structure embodiment's 1 a side structure schematic representation.
Fig. 4 is the utility model stepless adjustment of a kind of mechanical joint angle and locking structure embodiment's 2 a structural representation.
Fig. 5 is the utility model stepless adjustment of a kind of mechanical joint angle and locking structure embodiment's 3 a structural representation.
Embodiment
As shown in Figure 1, stepless adjustment of a kind of mechanical joint angle and locking structure, comprise first joint arm 1, second joint arm 2 and the joint that is used to connect first joint arm 1 and second joint arm 2, described joint comprise pass across first joint arm 1 and with first joint arm 1 be fixed together joint shaft 3, be socketed with torsion spring 4 on the described joint shaft 3, and torsion spring 4 and joint shaft 3 interference fit, forced sections 41 are fastened on the manipulator 5 on first joint arm 1 in the middle of the torsion spring 4, manipulator 5 gives torsion spring 4 forced sections 41 1 steering forces, and the extension 42 of torsion spring 4 both sides is fixed on the second joint arm 2.In order to increase friction area, the section of steel wire of described torsion spring 4 is a rectangle.Forced section 41 on the described torsion spring 4 stretches out from the tangent direction of torsion spring 4 both sides circumference, and perpendicular with manipulator 5 application of force directions.The extension 42 of described torsion spring 4 both sides is perpendicular with torsion spring 4 both sides helixes.Usually the number of coils of torsion spring 4 forced sections 41 both sides is identical, guarantees that so the two-way moment of torsion that bears is identical.
Embodiment 1:
Shown in Fig. 2,3, comprise first joint arm 1, second joint arm 2 and the joint that is used to connect first joint arm 1 and second joint arm 2, described joint comprises the joint shaft 3 that passes across first joint arm 1 and be fixed together with first joint arm 1, be socketed with torsion spring 4 on the described joint shaft 3, and torsion spring 4 and joint shaft 3 interference fit, forced sections 41 are fastened on the manipulator 5 on first joint arm 1 in the middle of the torsion spring 4, manipulator 5 gives torsion spring 4 forced sections 41 1 steering forces, and the extension 42 of torsion spring 4 both sides is fixed on the second joint arm 2.Wherein manipulator 5 is for being fixed on the rim brake 51 on first joint arm 1, and rim brake 51 is fixed on the forced section 41 of torsion spring 4 by drag-line 52.When needs are adjusted between first joint arm 1 and the second joint arm 2 angle, as long as depress rim brake 51, rim brake 51 drives on 52 pairs of forced sections 41 of drag-line grants a power that unscrews, and torsion spring 4 is just no longer held tightly on joint shaft 3 like this, but can freely rotate round joint shaft 3.And can be along joint shaft 3 two-way being rotated.But like this people just step-less adjustment connect angle between first joint arm 1 and the second joint arm 2.With rim brake 51 playback, torsion spring 4 had just been held tightly on central shaft 3 automatically after adjustment finished.Such structure is applicable to be needed on the manual remotely-controlled mechanical joint.
As shown in Figure 4, comprise first joint arm 1, second joint arm 2 and the joint that is used to connect first joint arm 1 and second joint arm 2, described joint comprise pass across first joint arm 1 and with first joint arm 1 be fixed together joint shaft 3, be socketed with torsion spring 4 on the described joint shaft 3, and torsion spring 4 and joint shaft 3 interference fit, forced sections 41 are fastened on the manipulator 5 on first joint arm 1 in the middle of the torsion spring 4, manipulator 5 gives torsion spring 4 forced sections 41 1 steering forces, and the extension 42 of torsion spring 4 both sides is fixed on the second joint arm 2.Wherein said manipulator 5 is for being fixed on the button 53 on first joint arm 1, and button 53 connects pushing block 54, and pushing block 54 is connected on the forced section 41 of torsion spring 4.When needs are adjusted between first joint arm 1 and the second joint arm 2 angle, as long as promote button 53, button 53 drives on 54 pairs of forced sections 41 of pushing block grants a power that unscrews, and torsion spring 4 is just no longer held tightly on joint shaft 3 like this, but can carry out two-way being rotated along joint shaft 3.But like this people just step-less adjustment connect angle between first joint arm 1 and the second joint arm 2.With button 53 playback, torsion spring 4 had just been held tightly on central shaft 3 automatically after adjustment finished.Such structure is applicable on the mechanical joint of compact structure.
As shown in Figure 5, comprise first joint arm 1, second joint arm 2 and the joint that is used to connect first joint arm 1 and second joint arm 2, described joint comprise pass across first joint arm 1 and with first joint arm 1 be fixed together joint shaft 3, be socketed with torsion spring 4 on the described joint shaft 3, and torsion spring 4 and joint shaft 3 interference fit, forced sections 41 are fastened on the manipulator 5 on first joint arm 1 in the middle of the torsion spring 4, manipulator 5 gives torsion spring 4 forced sections 41 1 steering forces, and the extension 42 of torsion spring 4 both sides is fixed on the second joint arm 2.Described manipulator 5 is for being fixed on the electromagnet 55 on first joint arm 1, and electromagnet 55 acts on the forced section 41 of torsion spring 4.Such structure is generally used in the automated machine.Get final product the power of control action on forced section 41 for during work 55 1 electrical signal of electromagnet at torsion spring 4.So just can control holding tightly and unclamp between torsion spring 5 and the joint shaft 3, regulate and locking connects the effect of the angle between first joint arm 1 and the second joint arm 2 from reaching.Such structure is applicable on the mechanical joint that needs control automatically.
As fully visible, the utility model is simple in structure, but the perfect step-less adjustment that realizes angle between two joint arms of energy, and applied widely, cost of production is low, can widely use in industrial production.
Claims (7)
1. stepless adjustment of mechanical joint angle and locking structure, comprise first joint arm (1), second joint arm (2) and the joint that is used to connect first joint arm (1) and second joint arm (2), it is characterized in that, described joint comprise pass across first joint arm (1) and with first joint arm (1) be fixed together joint shaft (3), be socketed with torsion spring (4) on the described joint shaft (3), and torsion spring (4) and joint shaft (3) interference fit, forced section (41) is fastened on the manipulator (5) on first joint arm (1) in the middle of the torsion spring (4), manipulator (5) gives torsion spring (4) forced section (41) steering forces, and the extension (42) of torsion spring (4) both sides is fixed on the second joint arm (2).
2. stepless adjustment of a kind of mechanical joint angle as claimed in claim 1 and locking structure, it is characterized in that: described manipulator (5) is for being fixed on the rim brake (51) on first joint arm (1), and rim brake (51) is fixed on the forced section (41) of torsion spring (4) by drag-line (52).
3. stepless adjustment of a kind of mechanical joint angle as claimed in claim 1 and locking structure, it is characterized in that: described manipulator (5) is for being fixed on the button (53) on first joint arm (1), button (53) connects pushing block (54), and pushing block (54) is connected on the forced section (41) of torsion spring (4).
4. stepless adjustment of a kind of mechanical joint angle as claimed in claim 1 and locking structure, it is characterized in that: described manipulator (5) is for being fixed on the solenoid valve (55) on first joint arm (1), and solenoid valve (55) acts on the forced section (41) of torsion spring (4).
5. as claim 1-4 stepless adjustment of wherein arbitrary described a kind of mechanical joint angle and locking structure, it is characterized in that: the section of steel wire of described torsion spring (4) is a rectangle.
6. as claim 1-4 stepless adjustment of wherein arbitrary described a kind of mechanical joint angle and locking structure, it is characterized in that: the forced section (41) on the described torsion spring (4) stretches out from the tangent direction of torsion spring (4) both sides circumference, and perpendicular with manipulator (5) application of force direction.
7. as claim 1-4 stepless adjustment of wherein arbitrary described a kind of mechanical joint angle and locking structure, it is characterized in that: the extension (42) of described torsion spring (4) both sides is perpendicular with torsion spring (4) both sides helix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200683170U CN201982482U (en) | 2011-03-15 | 2011-03-15 | Stepless adjustment and locking structure for mechanical joint angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200683170U CN201982482U (en) | 2011-03-15 | 2011-03-15 | Stepless adjustment and locking structure for mechanical joint angle |
Publications (1)
| Publication Number | Publication Date |
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| CN201982482U true CN201982482U (en) | 2011-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200683170U Expired - Fee Related CN201982482U (en) | 2011-03-15 | 2011-03-15 | Stepless adjustment and locking structure for mechanical joint angle |
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| CN (1) | CN201982482U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146955A (en) * | 2011-03-15 | 2011-08-10 | 浙江师范大学 | Stepless adjusting and locking structure of mechanical joint angle |
| CN103343771A (en) * | 2013-03-28 | 2013-10-09 | 苏州优德通力电气有限公司 | Easily disassembling positioning device for short shaft |
| CN108161988A (en) * | 2017-12-04 | 2018-06-15 | 东南大学 | For the electromagnetic self-locking device of lasso trick |
| CN108858258A (en) * | 2018-07-17 | 2018-11-23 | 东北大学 | A kind of pneumatic muscles driving primate bio-robot gripper |
| CN110181505A (en) * | 2019-04-22 | 2019-08-30 | 珠海格力智能装备有限公司 | The method and robot that the speed reducer of robot determines |
-
2011
- 2011-03-15 CN CN2011200683170U patent/CN201982482U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146955A (en) * | 2011-03-15 | 2011-08-10 | 浙江师范大学 | Stepless adjusting and locking structure of mechanical joint angle |
| CN102146955B (en) * | 2011-03-15 | 2013-10-23 | 浙江师范大学 | Stepless adjusting and locking structure of mechanical joint angle |
| CN103343771A (en) * | 2013-03-28 | 2013-10-09 | 苏州优德通力电气有限公司 | Easily disassembling positioning device for short shaft |
| CN103343771B (en) * | 2013-03-28 | 2015-12-16 | 苏州优德通力电气有限公司 | A kind of readily removable minor axis positioning device |
| CN108161988A (en) * | 2017-12-04 | 2018-06-15 | 东南大学 | For the electromagnetic self-locking device of lasso trick |
| CN108161988B (en) * | 2017-12-04 | 2021-06-01 | 东南大学 | Electromagnetic self-locking device for lasso |
| CN108858258A (en) * | 2018-07-17 | 2018-11-23 | 东北大学 | A kind of pneumatic muscles driving primate bio-robot gripper |
| CN110181505A (en) * | 2019-04-22 | 2019-08-30 | 珠海格力智能装备有限公司 | The method and robot that the speed reducer of robot determines |
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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: 20110921 Termination date: 20120315 |