CN204664206U - A kind of spiral locking mechanism - Google Patents
A kind of spiral locking mechanism Download PDFInfo
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- CN204664206U CN204664206U CN201520282424.1U CN201520282424U CN204664206U CN 204664206 U CN204664206 U CN 204664206U CN 201520282424 U CN201520282424 U CN 201520282424U CN 204664206 U CN204664206 U CN 204664206U
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Abstract
The utility model relates to a kind of spiral lock locking structure.This spiral locking mechanism is used for attachment hole component and shaft component, and locking mechanism comprises [Dan locking element and tubular shafts locking element, is provided with internal thread in the locking element of hole, and shaft locking part is provided with the outside thread of corresponding internal thread.When attachment hole component and shaft component, hole locking element is inserted in pole, shaft locking part is enclosed within shaft component, and the outside thread of shaft locking part engages with the internal thread of hole locking element and shaft locking part and hole locking element are in tight condition, and outside thread and internal thread are in self-locking state.That locking mechanism of the present utility model connects is firm, coaxality is high, do not have return difference, easy accessibility, adaptable Placement, and manufacture difficulty is little, and cost is low, provides desirable solution for the hole of minor diameter, little axial dimension, shaft component connect.
Description
Technical field
The utility model relates to locking mechanism, particularly relates to a kind of spiral locking mechanism.
Background technique
The connection locking technology of pole and shaft component, being one of technology the most extensively used in mechanism transmission design, is also the indispensable technology of mechanical transmission fields.For different applications, the connection locking method of pole and shaft component is varied, that commonly uses at present (includes but not limited to umbrella gear for pole, synchronous pulley, turbine, shaft joint etc.), shaft component (includes but not limited to motor, speed reducer, axle etc.) two components (as motor shaft-umbrella gear hole, motor shaft-Timing Belt wheel bore, motor shaft-turbine bore, axle-shaft joint hole etc.) between connection locking mode have key to connect, pin connects, jackscrew connects, lock sleeve connects, heat shrink connection etc., but at component hole, shaft diameter is less, apply these modes when particularly axial dimension is also short to connect, all there are some obvious defects.
Above-mentioned pole and the connection of shaft component, will reach three objects that relative axial position between the diametrically position between fixed hole, axle, fixed hole, axle and hole, axle rotational motion are synchronous usually.
Diametrically position between fixed hole, axle, general conventional axle plan connected inserts in the hole intending connecting, the method of the mutual restriction of hole inwall and axle outer surface is relied on to realize, the Percent of contact area of hole, axle determines hole, axle connect after concentricity, hole, the connection concentricity that axle Percent of contact area is low are poor, the connection of concentricity difference will make hole, the shaft component generation vibration of rotation, this can wear and tear by accelerating pulley tooth surface in gear transmission, tight during pine when can make Timing Belt in synchronous belt pulley transmission, the stationarity that impact is rotated.Hole, the more high connection being more conducive to hole, axle of axle Percent of contact area, but the accurate to dimension of same hole when, axle requires also higher, and the cost of processing is also higher, and the difficulty of processing is also larger.Especially aperture and little D shape hole are difficult to carry out highi degree of accuracy processing, because high accurate hole processing will adopt the technique of mill or boring, but these two kinds of techniques can not be used for machining small or little D shape hole.
So-called key Placement, corresponding keyway is outputed exactly on the hole and axle of plan attachment hole, shaft component, need during connection to load onto key in the position of keyway, synchronous with the hole, the axle rotational motion that realize pole and shaft component, simultaneously with the relative axial position between end cap, neck bush or jump ring fixed hole, axle.When Axial and radial size is less, fluting obviously can reduce axle intensity, be difficult to especially when the axial dimension of axle is shorter use end cap, neck bush, and with jump ring can not fixed hole, axle relative axial position, and can only by relative position restriction within the specific limits, can not use in the connection of motor shaft-umbrella gear hole, motor shaft-turbine bore.
So-called pin Placement, corresponding pin hole is got exactly at plan attachment hole, the hole of shaft component, axle position, pin hole axis will with axially bored line and axle axes intersect, and perpendicular to axially bored line and axle axis, need during connection with pin simultaneously through the pin hole on pole and shaft component, and it is fixed to be turned over rivet clasp, synchronous with the rotational motion realizing pole and shaft component, and can relative axial position simultaneously between fixed hole, axle.This Placement requires very high to the Percent of contact area of hole, axle, because pin does not have restraining force diametrically to hole, axle, it is poor that hole, axle Percent of contact area be low must cause hole, axle connects concentricity, thus impact connection effect.Sell simultaneously Placement to the dimensional accuracy coordinated of pin hole and pin and position accuracy demand also very high, difficult processing is magnanimous.When the radial dimension of axle is less, axle punches, very large to the intensity effect of axle.
Adopt jackscrew Placement, axle is generally needed to make D shape, screw hole is got in the relevant position in pole hole, during connection, pole is inserted in shaft component, screw hole to be screwed on jackscrew, jackscrew end holds out against in the plane of D oblique crank Z, synchronous with the rotational motion realizing pole and shaft component, and can relative axial position simultaneously between fixed hole, axle.Because the end of jackscrew is when driving pole to rotate with shaft component, the pressure born is very large, easily causes jackscrew to loosen and jackscrew end wear, and causing hole, axle rotational motion is asynchronous and produce return difference, and connection even can be caused time serious to get loose.
So-called lock sleeve Placement, lengthens the end of intending the pole connected exactly and makes axle sleeve, slotted opening on axle sleeve, lock sleeve can be enclosed within axle sleeve, when tightening the screw on lock sleeve, axle sleeve can be made inwardly to shrink and to hold the axle intending connecting tightly, thus realizing the connection of pole and shaft component.This is the Placement often used time less at component hole, shaft diameter, but because needing the end of pole to lengthen makes axle sleeve, the axle coordinated with it is also long, just this Placement can not be adopted when the shaft component axial dimension intending connecting is less, and the locking nut connecting small diameter bore, shaft component used is also less, the enclasping force that lock sleeve produces is little, and is not suitable for transmitting slightly large moment of torsion.
So-called heat shrink Placement, the shaft diameter being exactly the bore dia analogy coupling shaft component intending attachment hole component is more smaller, bottoming hole component is to the shaft diameter of the close shaft component do not heated of bore dia, by in shaft insertion hole, when the temperature of pole drops to the same with the temperature of shaft component, hole will hold axle tightly firmly, achieve the good connection of pole and shaft component.But this mode also has its deficiency, first, very high to the requirement on machining accuracy of hole, axle; Secondly, only have special manufacturer just can do, general general assembly factory is difficult to adopt this kind of technique; Moreover this connection is non-removable, lack use flexibility, such as, motor is connected in this way with umbrella gear, need to change once umbrella gear wearing and tearing, just motor also can only have been replaced together; This Placement also has a maximum shortcoming, the mounting hole of small motor, usually in end, if first loaded onto pole, has brought very large inconvenience by installation, just cannot install when pole covers in installation screw, therefore this also limits the application of this Placement greatly.
From aforementioned all, be starved of a kind of can meet connect firm, coaxality is high, do not have return difference, easy accessibility, difficulty of processing are little, using scope is wide requirement, can be applicable to minor diameter, the device that the hole of little axial dimension, shaft component connect.
Model utility content
The utility model for above problem propose a kind of connect firm, coaxality is high, do not have return difference, easy accessibility, difficulty of processing are little, using scope is wide, can be applicable to the spiral lock locking structure of small diameter bore, shaft component, especially little, that axial dimension is the also little simultaneously hole of radial dimension, shaft component connection provide desirable spiral lock locking structure.
For achieving the above object, the utility model is by the following technical solutions:
A kind of spiral locking mechanism, it is for attachment hole component and shaft component, and locking mechanism comprises [Dan locking element and tubular shafts locking element, is provided with internal thread in the locking element of hole, and shaft locking part is provided with the outside thread of corresponding internal thread;
When attachment hole component and shaft component, hole locking element is inserted in pole, shaft locking part is enclosed within shaft component, and the outside thread of shaft locking part engages with the internal thread of hole locking element and shaft locking part and hole locking element are in tight condition, and outside thread and internal thread are in self-locking state.
Further, hole locking element is provided with the first flange, and shaft locking part is provided with the second flange, and when attachment hole component and shaft component, shaft locking part and hole locking element are in tight condition, and the first flange and the second flange are supported mutually.
Further, the side of the first flange is provided with symmetrical trimming, and the shape of the second flange is regular hexagon.
Further, the tooth form of the internal thread of hole locking element is that inequilateral is trapezoidal, and the externally threaded tooth form of shaft locking part is that the inequilateral corresponding with internal thread is trapezoidal.
Further, the long limit in the cross section of the thread of internal thread is greater than 1.8 with the ratio of minor face, and the normal direction of minor face is towards the first flange.
Further, the long limit in the cross section of externally threaded thread is greater than 1.8 with the ratio of minor face, and the normal direction on long limit is towards the second flange.
Further, hole locking element is provided with the first notch of the radial elastic for improving hole locking element, and the first notch extends to the rear end of internal thread from the internal thread front end of hole locking element.
Further, the first notch has two, and two the first notches are evenly distributed on the locking element of hole.
Further, shaft locking part is provided with the second notch of the radial elastic for improving shaft locking part, and the second notch extends to externally threaded rear end from the outside thread front end of shaft locking part.
Further, two the second notches are evenly distributed on shaft locking part.
The utility model beneficial effect is compared with prior art:
Screw locking device involved by the utility model, due to the diametrically position between fixed hole component, shaft component be not by the surface of axle and the surface in hole contacts with each other thus this mode of limit radial movement fixes, do not need to depend on pole, the Percent of contact area decision bore component of shaft component, shaft component connect after concentricity, greatly reduce the requirement on machining accuracy of pole, shaft component, make that processing becomes easily, efficiency is high, cost is low.Do not need to spline, punch or process D shape face on the axle intending the shaft component connected, ensure that the intensity of axle, this is hour especially meaningful at the diameter of axle.Do not rely on the lockings such as end cap, neck bush or lock sleeve, also just do not need additionally to take the axial dimension intending coupling shaft, in the hole of little axial dimension, shaft component is when connecting, and has original advantage.When attachment hole component, shaft component, only need locking device patchhole component, after shaft component is inserted locking device, tighten shaft locking part and can complete connection locking, make simple to operation.Connect locking rear between pole and hole locking element, between shaft locking part and shaft component and completely very close to each other between hole locking element and shaft locking part, return difference can not be produced, thus be the hole of minor diameter, the connection of shaft component is particularly in the small diameter bore that axial dimension is less, the connection of shaft component, provide connection firm, coaxality is high, there is no return difference, easy accessibility, adaptable Placement, and manufacture difficulty is little, cost is low, for minor diameter, the hole of little axial dimension, shaft component connection provides desirable solution, solve the pole of minor diameter, a connection difficult problem for shaft component.
Accompanying drawing explanation
Fig. 1 is hole locking element and shaft locking part assembling stereogram;
Fig. 2 is hole locking element and shaft locking part sectional arrangement drawing;
Fig. 3 is shaft locking part stereogram;
Fig. 4 is shaft locking part front view;
Fig. 5 is shaft locking part sectional view;
Fig. 6 is hole locking element stereogram;
Fig. 7 is hole locking element sectional view.
Embodiment
In order to more fully understand technology contents of the present utility model, below in conjunction with specific embodiment the technical solution of the utility model being described further and illustrating.
The concrete structure of the utility model embodiment as shown in Figures 1 to 7.
The present embodiment spiral locking mechanism is used for attachment hole component and shaft component, and it comprises [Dan locking element 10 and tubular shafts locking element 20.Be provided with internal thread 11 in hole locking element 10, shaft locking part 20 is provided with the outside thread 21 of corresponding internal thread 11.
When attachment hole component and shaft component, hole locking element 10 is inserted in pole, shaft locking part 20 is enclosed within shaft component, the outside thread 21 of shaft locking part 20 engages with the internal thread 11 of hole locking element 10 and shaft locking part 20 and hole locking element 10 are in tight condition, and outside thread 21 and internal thread 11 are in self-locking state.Outside thread 21 in the present embodiment and the condition of self-locking of internal thread 11 are similar to the condition of self-locking between screw and nut, relevant with the selection of effective diameter of thread, pitch, lead angle and material.
Hole locking element 10 is provided with the first flange 12, and shaft locking part 20 is provided with the second flange 22, and when attachment hole component and shaft component, shaft locking part 20 and hole locking element 10 are in tight condition, and the first flange 12 and the second flange 22 are supported mutually.The side of the first flange 12 is provided with symmetrical trimming 121, can conveniently clamp the first flange 12 when mounted like this, avoid hole locking element 10 to rotate.The shape of the second flange 22 is regular hexagon, can facilitate torsional axis locking element 20 when mounted like this.
The tooth form of the internal thread 11 of hole locking element 10 is that inequilateral is trapezoidal, and the tooth form of shaft locking part 20 outside thread 21 is that the inequilateral corresponding with internal thread 11 is trapezoidal.Wherein, the long limit L1 in the cross section of the thread of internal thread 11 is greater than 1.8 with the ratio of minor face L1', and the normal direction of minor face L1' is towards the first flange 12.The long limit L2 in the cross section of the thread of outside thread 21 is greater than 1.8 with the ratio of minor face L2', and the normal direction of long limit L2 is towards the second flange 22.The internal thread 11 lead angle α of hole locking element 10 equals the outside thread 21 lead angle β of shaft locking part 20, and the pitch t1 of hole locking element 10 internal thread 11 equals the pitch t2 of shaft locking part 20 outside thread 21.
First notch 13, first notch 13 of the radial elastic that hole locking element 10 is provided with for improving hole locking element 10 extends to the rear end of internal thread 11 from internal thread 11 front end of hole locking element 10.First notch 13 has two, and two the first notches 13 are evenly distributed on hole locking element 10.
Similarly, the second notch 23, second notch 23 of radial elastic that shaft locking part 20 is provided with for improving shaft locking part 20 extends to the rear end of outside thread 21 from outside thread 21 front end of shaft locking part 20.Two the second notches 23 are evenly distributed on shaft locking part 20.
Using method
Locking operation process is as follows: 1, do not tighten in shaft locking part 20 advances through hole locking element 10, 2, hole locking element 10 inserts in the hole needing the pole connected, 3, shaft locking part 20 is inserted on the axle of the shaft component needing connection, 4, with the first flange 12 limit that hole locking element 10 clamped by instrument, hole locking element 10 can not be rotated, 5, turn shaft locking part 20 contacts to its second flange 22 with the first flange 12 of hole locking element 10, 6, the second flange 22 clamping shaft locking part 20 with instrument firmly tightens shaft locking part 20, because the second flange 22 of shaft locking part 20 contacts with the first flange 12 of hole locking element 10, shaft locking part 20 and hole locking element 10 can not produce axially displacement mutually again, the internal thread 11 of this hole when locking element 10 and the outside thread 21 of shaft locking part 20 inclined-plane, trapezoidal long limit bonded to each other will produce a pair very large outside and inside radial force, act on respectively on hole locking element 10 with on shaft locking part 20, tubular wall due to hole locking element 10 is opened the first notch 13, making to act on radial force passing hole locking element 10 outer wall outside on hole locking element 10 is applied on the inwall of pole, when pole has the trend of motion, the inwall of hole locking element 10 outer wall and pole will produce powerful frictional force, secure the relative axial position between pole and hole locking element 10, and make pole synchronous with hole locking element 10 rotational motion, radial force secures the diametrically position of pole and hole locking element 10.In like manner, tubular wall due to shaft locking part 20 is opened the second notch 13, making to act on radial force inside on shaft locking part 20 is applied on the axle of shaft component by shaft locking part 20 inwall, when shaft component has the trend of motion, the axle of shaft locking part 20 inwall and shaft component will produce powerful frictional force, secure the relative axial position between shaft component and shaft locking part 20, and making shaft component synchronous with shaft locking part 20 rotational motion, radial force secures the diametrically position of shaft component and shaft locking part 20.Now, hole locking element 10 and shaft locking part 20 are because the first flange 12 and the second flange 22 limit mutual axial motion, frictional force on trapezoidal thread surface of contact limits hole locking element 10 and the mutual radial motion of shaft locking part 20 and makes hole locking element 10 and shaft locking part 20 achieve rotational synchronization, like this, pole and shaft component are just connected tightly by spiral locking mechanism and are locked together.
More than state only with embodiment to further illustrate technology contents of the present utility model; so that reader is easier to understand; but do not represent mode of execution of the present utility model and be only limitted to this, any technology done according to the utility model extends or recreation, all by protection of the present utility model.
Claims (10)
1. a spiral locking mechanism, it, for attachment hole component and shaft component, is characterized in that, described locking mechanism comprises [Dan locking element and tubular shafts locking element, be provided with internal thread in the locking element of described hole, described shaft locking part is provided with the outside thread of corresponding described internal thread;
When attachment hole component and shaft component, described hole locking element is inserted in described pole, described shaft locking part is enclosed within described shaft component, the outside thread of described shaft locking part engages with the internal thread of described hole locking element and shaft locking part and hole locking element are in tight condition, and described outside thread and internal thread are in self-locking state.
2. spiral locking mechanism as claimed in claim 1, it is characterized in that, described hole locking element is provided with the first flange, described shaft locking part is provided with the second flange, when attachment hole component and shaft component, shaft locking part and hole locking element are in tight condition, and described first flange and the second flange are supported mutually.
3. spiral locking mechanism as claimed in claim 2, is characterized in that, the side of described first flange is provided with symmetrical trimming, and the shape of described second flange is regular hexagon.
4. spiral locking mechanism as claimed in claim 2, it is characterized in that, the tooth form of the internal thread of described hole locking element is that inequilateral is trapezoidal, and the externally threaded tooth form of described shaft locking part is that the inequilateral corresponding with internal thread is trapezoidal.
5. spiral locking mechanism as claimed in claim 4, it is characterized in that, the long limit in the cross section of the thread of described internal thread is greater than 1.8 with the ratio of minor face, and the normal direction of described minor face is towards described first flange.
6. spiral locking mechanism as claimed in claim 4, it is characterized in that, the long limit in the cross section of described externally threaded thread is greater than 1.8 with the ratio of minor face, and the normal direction on described long limit is towards described second flange.
7. spiral locking mechanism as claimed in claim 1, it is characterized in that, described hole locking element is provided with the first notch of the radial elastic for improving hole locking element, and described first notch extends to the rear end of internal thread from the internal thread front end of hole locking element.
8. spiral locking mechanism as claimed in claim 7, it is characterized in that, described first notch has two, and two the first notches are evenly distributed on the locking element of described hole.
9. spiral locking mechanism as claimed in claim 1, it is characterized in that, described shaft locking part is provided with the second notch of the radial elastic for improving shaft locking part, and described second notch extends to externally threaded rear end from the outside thread front end of shaft locking part.
10. spiral locking mechanism as claimed in claim 9, it is characterized in that, described second notch has two, and two the second notches are evenly distributed on described shaft locking part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520282424.1U CN204664206U (en) | 2015-05-05 | 2015-05-05 | A kind of spiral locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520282424.1U CN204664206U (en) | 2015-05-05 | 2015-05-05 | A kind of spiral locking mechanism |
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| Publication Number | Publication Date |
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| CN204664206U true CN204664206U (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520282424.1U Active CN204664206U (en) | 2015-05-05 | 2015-05-05 | A kind of spiral locking mechanism |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443549A (en) * | 2015-11-24 | 2016-03-30 | 游奕华 | Conical internal thread and threaded column connecting structure |
| CN105443546A (en) * | 2015-11-24 | 2016-03-30 | 游奕华 | Tapered thread bolt body and tapered thread nut |
| CN110005681A (en) * | 2018-04-07 | 2019-07-12 | 玉环胜友工具有限公司 | The connection structure of class olive-shaped symmetrical two-way tapered thread internal screw thread and conventional threads |
| WO2019192567A1 (en) * | 2018-04-07 | 2019-10-10 | 玉环胜友工具有限公司 | Connection structure of bolt and nut with dumbbell shape bidirectional conical thread having small left taper and large right taper |
-
2015
- 2015-05-05 CN CN201520282424.1U patent/CN204664206U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443549A (en) * | 2015-11-24 | 2016-03-30 | 游奕华 | Conical internal thread and threaded column connecting structure |
| CN105443546A (en) * | 2015-11-24 | 2016-03-30 | 游奕华 | Tapered thread bolt body and tapered thread nut |
| CN105443549B (en) * | 2015-11-24 | 2018-06-15 | 游奕华 | Conical internal thread and threaded post connection structure |
| CN105443546B (en) * | 2015-11-24 | 2018-06-19 | 游奕华 | The tapered thread body of bolt and tapered thread nut |
| CN110005681A (en) * | 2018-04-07 | 2019-07-12 | 玉环胜友工具有限公司 | The connection structure of class olive-shaped symmetrical two-way tapered thread internal screw thread and conventional threads |
| WO2019192567A1 (en) * | 2018-04-07 | 2019-10-10 | 玉环胜友工具有限公司 | Connection structure of bolt and nut with dumbbell shape bidirectional conical thread having small left taper and large right taper |
| WO2019192557A1 (en) * | 2018-04-07 | 2019-10-10 | 玉环胜友工具有限公司 | Connection structure of internal thread and traditional thread with symmetrical bidirectional conical thread having olive-like shape |
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