CN203374616U - Anti-loosening cylindrical screw element - Google Patents
Anti-loosening cylindrical screw element Download PDFInfo
- Publication number
- CN203374616U CN203374616U CN201320391528.7U CN201320391528U CN203374616U CN 203374616 U CN203374616 U CN 203374616U CN 201320391528 U CN201320391528 U CN 201320391528U CN 203374616 U CN203374616 U CN 203374616U
- Authority
- CN
- China
- Prior art keywords
- thread
- cylindrical
- screw element
- loosening
- piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model discloses an anti-loosening cylindrical screw element. The anti-loosening cylindrical screw element comprises an inner screw element body and an outer screw element body. Cylindrical internal threads are formed in an inner hole of the inner screw element body, cylindrical external threads are formed in a threaded rod of the outer screw element body, a cylindrical surface which is parallel to a longitudinal central axis of the outer threads is arranged on the threaded rod of the outer screw element body, the outer diameter of the cylindrical surface is smaller than the maximum outer diameter of the external threads, and anti-loosening materials do not coat the surfaces of the internal threads or the surfaces of the external threads or the cylindrical surface. After the internal threads are screwed with the external threads, the cylindrical surface and the crests of the internal threads are of a mutual close contact structure, namely, a transverse locking structure. Therefore, effective loosening prevention between the cylindrical inner screw element body and the cylindrical outer screw element body can also be achieved under the condition that no longitudinal expansion force exists between the screw element and a workpiece, the anti-loosening cylindrical screw element is suitable for loosening prevention of rigidity fastening connection, elastic connection and other types of connection of various cylindrical screw elements, and the stability of loosening prevention is higher.
Description
Technical field
The utility model relates to a kind of anti-loosening cylindrical thread part.
Background technique
In the environment of transverse vibration or impact, the loosening of cylindrical thread part connection pair is the problem that perplexs for a long time us, in the environment of transverse vibration or impact, does the cylindrical thread part connect what is secondary loosening reason so? following the utility model people makes a concrete analysis of:
At one group of cylindrical thread part, connect between secondary internal and external screw thread, friction factor and lead angle between the tooth side reach certain value, just can realize that threaded piece connects secondary vertical self-locking.
Common cylindrical thread part connects the secondary used time of doing that is not subject to external force under the state of tightening, and vertically, laterally all has certain gap between internal and external screw thread.
(vertically, laterally all there is certain gap between internal and external screw thread) with one group of standard dextrorotation cylindrical thread nut screwing clamping on the corresponding full tooth cylindrical thread of standard dextrorotation bolt, one end of nut contacts with bolt head and has the threaded piece of certain pretightening force to connect secondary is example: bolt head is upward under the attitude perpendicular to horizontal plane, and threaded piece connects the secondary horizontal linear direction forward done and clashes into the motion (clash into moment only have bolt head to contact with fixture) of hard fixture with certain speed.If with the longitudinal central axis line that comprises overlapped internal thread and externally threaded longitudinal central axis line and connect the plane that secondary moving direction is parallel to each other with threaded piece screw bolt and nut is divided into to the left and right sides, the externally threaded upper tooth side in the left side of bolt is the curved ramp that is downward, the externally threaded upper tooth side in the right side of bolt is to be curved ramp upwards, because this structure, when threaded piece connects secondary moment of clashing into fixture, between the externally threaded upper tooth side of the lower tooth side of the right side internal thread of nut and the right side of bolt, be the trend of mutually pushing, and between the externally threaded upper tooth side in the left side of the lower tooth side of the left side internal thread of nut and bolt, be the trend mutually broken away from, so when threaded piece connects secondary moment of clashing into fixture, frictional force between the externally threaded upper tooth side of the lower tooth side of the right side internal thread of nut and the right side of bolt is larger than the frictional force between the externally threaded upper tooth side in the left side of the lower tooth side of the left side internal thread of nut and bolt, so when threaded piece connects secondary moment of clashing into fixture, nut can produce take the right side internal thread the externally threaded upper tooth side of lower tooth side and right side surface of contact as fulcrum (in theory, in one circle of common cylinder screw thread, on externally threaded, the lower tooth side is all to be arranged and form along the helix of screw thread by a lot of mutual uneven straight lines, so mutually coincide, the lower tooth side and of a circle internal thread of the common cylinder screw thread of contact is enclosed between externally threaded upper tooth side as long as change the state that mutually coincide and contact, between the lower tooth side and externally threaded upper tooth side of internal thread, will only have a point of contact rather than surface of contact, so this point of contact is exactly theoretic fulcrum) do the trend rotatablely moved left, so when threaded piece connects the certain value of making a concerted effort to surpass that the secondary moment nut that clashes into fixture is subject to, nut will be done the motion to anticlockwise without stationary axle, the motion that namely nut moves back with respect to the bolt pine, and in, lateral clearance between outside thread just in time provides nut to do the space rotatablely moved without stationary axle left.As a following little experiment: (be convenient to like this be tested put the twice of the external diameter that an internal diameter is pencil on the cylindrical pencil of a horizontal suspended more than, visual effect that simultaneously also can amplification test) circle, push hard the middle part of circle, circle will be done without the vertically motion of rotation of stationary axle, and as long as thrust direction is constant, the sense of rotation of circle is also constant, as long as thrust direction one becomes, the sense of rotation of circle also becomes.
Therefore, can think that the common cylinder threaded piece connects pair loosening reason of generation in the environment of transverse vibration or impact and is: the common cylinder threaded piece connects secondary in the environment of transverse vibration or impact, because the helix structure of screw thread, in one side, frictional force between externally threaded tooth side is than in opposite side, frictional force between externally threaded tooth side is larger, so inner thread piece or external thread piece can produce in a side larger with frictional force, the surface of contact of externally threaded tooth side is the trend that fulcrum is done the transverse rotation motion, so when inner thread piece or external thread piece be subject to make a concerted effort to surpass certain value the time, inner thread piece or external thread piece will be done the motion without the stationary axle transverse rotation, in the direction of transverse rotation is exactly, the direction that between external thread piece, pine moves back relatively, and in, in lateral clearance between outside thread provides, do the space without the motion of stationary axle transverse rotation between external thread piece, and in, dynamic friction factor between externally threaded tooth side can not meet threaded piece with the inclination angle of tooth side and connect the secondary laterally condition of self-locking.
Therefore, if stop between the internal and external screw thread part without the motion of stationary axle transverse rotation, just can realize that threaded piece connects fully locking in the environment of transverse vibration or impact of pair.
The Horace D.Holmes of the U.S. has designed the Spiralock nut, 20 century 70s have obtained patent and have thrown product, obtained user's very big favorable comment, but the professor of MIT (Massachusetts Institute Technology) claims: " test situation of this fastening system is good especially, and the purpose of test is in default of theoretical foundation ".Usually at the bottom of the internal thread of Spiralock cylindrical thread part or externally threaded tooth, the wedge shape inclined-plane that is 30 ° of angles with internal thread or externally threaded longitudinal central axis line is arranged, and the dynamic friction factor that great majority need locking cylindrical thread part to connect between secondary thread surface all is less than tan30 ° (≈ 0.577), so horizontal locking between internal thread or externally threaded surface and wedge shape inclined-plane, therefore very large pretightening force that must handy recommendation is out of shape generation between internal thread or externally threaded surface and wedge shape inclined-plane and is become the structure of horizontal locking, thereby in effectively stoping, moving without the stationary axle transverse rotation between external thread piece, could realize that the cylindrical thread part connects the effectively locking of pair.
Object is still on inclined-plane, when the inclination angle on inclined-plane is increased to θ, object can at the uniform velocity glide just from inclined-plane, inclination angle of inclined plane θ now is called friction angle, can calculate the dynamic friction factor between object and inclined-plane according to the friction angle size, be μ=tan θ, also can calculate friction angle size, i.e. θ=tan according to the dynamic friction factor between object and inclined-plane
-1μ.When inclination angle of inclined plane is less than friction angle θ, it is multiple no matter the object on inclined-plane becomes, and object can not slide; When inclination angle of inclined plane is greater than friction angle θ, it is multiple no matter the object on inclined-plane becomes, and object all can slide.
In the use of threaded fastener, if the dynamic friction factor between internal and external screw thread is excessive, easily cause making not between coupled to produce loosening crisis because of clamping force.The VDA235-101 standard of formulating according to German automobiles TIA, the dynamic friction factor between the internal and external screw thread of internal and external screw thread part should not be greater than 0.15.
The cylindrical thread part of existing wedge thread locking, the longitudinal extension power that must rely on threaded piece and workpiece obtains pretightening force and could realize, so be only applicable to the locking of rigidity tight joint, the cylindrical thread part of existing wedge thread connects secondary being in for a long time in the environment of complicated vibrations or impact, can lose part or all of pretightening force because of the reasons such as linear deformation of threaded piece and workpiece, thereby cause locking inefficacy.
The model utility content
Technical problem to be solved in the utility model is: for the above-mentioned deficiency of the cylindrical thread part that overcomes existing wedge thread, the utility model provides a kind of anti-loosening cylindrical thread part, in the situation that do not have the longitudinal extension power of threaded piece and workpiece can realize effectively locking between cylinder inner thread piece and cylinder external thread piece yet, be applicable to the locking of the various cylindrical thread parts connections such as rigidity tight joint, resilient connection, and locking stability is stronger.
For addressing the above problem, the technical solution adopted in the utility model is: be provided with the cylinder internal thread in the endoporus of inner thread piece, be provided with the cylinder outside thread on the screw rod of external thread piece, the periphery be parallel to each other with externally threaded longitudinal central axis line is arranged on the screw rod of external thread piece, the external diameter of periphery is less than externally threaded maximum outside diameter, be not covered with locking material on internal thread and externally threaded surface and periphery, after mutually screwing between internal thread and outside thread, it between the crest of periphery and internal thread, is the structure of mutual close contact, the horizontal structure of locking namely, thereby in effectively stoping, moving without the stationary axle transverse rotation between external thread piece, namely can realize effectively locking between cylinder inner thread piece and cylinder external thread piece.
The beneficial effects of the utility model are: above-mentioned anti-loosening cylindrical thread part, with the cylindrical thread part of existing wedge thread, compare, it is not in the situation that there is no threaded piece and the longitudinal extension power of workpiece also can realize effectively locking between cylinder inner thread piece and cylinder external thread piece, be applicable to the locking of the various cylindrical thread parts connections such as rigidity tight joint, resilient connection, and locking stability is stronger; Above-mentioned anti-loosening cylindrical thread part, it is simple in structure, easy to use, and utilizes existing technique and equipment just can realize large-scale production.
The accompanying drawing explanation
Fig. 1 is that the threaded piece after mutually screwing between the first embodiment's of the present utility model internal thread and outside thread connects Fu center vertical profile schematic side view;
Fig. 2 is that the threaded piece after mutually screwing between the second embodiment's of the present utility model internal thread and outside thread connects Fu center vertical profile schematic side view;
In figure: 1, inner thread piece, 2, external thread piece, 3, internal thread, 4, outside thread, 5, the longitudinal central axis line, 6, periphery.
Embodiment
Below by specific embodiment, anti-loosening cylindrical thread part of the present utility model is described in further detail.
As shown in Figure 1, anti-loosening cylindrical thread part, comprise inner thread piece 1 and external thread piece 2, wherein: be provided with cylinder internal thread 3 in the endoporus of inner thread piece 1, be provided with cylinder outside thread 4 on the screw rod of external thread piece 2, the periphery 6 that has the longitudinal central axis line 5 with outside thread 4 to be parallel to each other at the bottom of the tooth of outside thread 4, the external diameter of periphery 6 is less than the maximum outside diameter of outside thread 4; Be not covered with locking material on the surface of internal thread 3 and outside thread 4; As shown in Figure 1, after mutually screwing between internal thread 3 and outside thread 4, between the crest of periphery 6 and internal thread 3, be the structure of mutual close contact.
Embodiment 2
As shown in Figure 2, anti-loosening cylindrical thread part, comprise inner thread piece 1 and external thread piece 2, wherein: be provided with cylinder internal thread 3 in the endoporus of inner thread piece 1, be provided with cylinder outside thread 4 on the screw rod of external thread piece 2, the periphery 6 that has the longitudinal central axis line 5 with outside thread 4 to be parallel to each other on the screw rod of external thread piece 2, the external diameter of periphery 6 is less than the maximum outside diameter of outside thread 4; Be not covered with locking material on the surface of internal thread 3 and outside thread 4 and periphery 6; As shown in Figure 2, after mutually screwing between internal thread 3 and outside thread 4, between the crest of periphery 6 and internal thread 3, be the structure of mutual close contact.
The above embodiments principle and effect thereof that only illustrative the utility model is created, and the embodiment of part utilization, but not for limiting the utility model; It should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model creation design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (1)
1. anti-loosening cylindrical thread part, comprise inner thread piece and external thread piece, be provided with the cylinder internal thread in the endoporus of inner thread piece, be provided with the cylinder outside thread on the screw rod of external thread piece, the periphery be parallel to each other with externally threaded longitudinal central axis line is arranged on the screw rod of external thread piece, the external diameter of periphery is less than externally threaded maximum outside diameter, be not covered with locking material on internal thread and externally threaded surface and periphery, it is characterized in that: after mutually screwing between internal thread and outside thread, between the crest of periphery and internal thread, be the structure of mutual close contact.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320391528.7U CN203374616U (en) | 2013-07-03 | 2013-07-03 | Anti-loosening cylindrical screw element |
| CA2915886A CA2915886A1 (en) | 2013-07-03 | 2014-04-15 | Anti-loosening cylindrical threaded part |
| EP14819641.3A EP3020985A4 (en) | 2013-07-03 | 2014-04-15 | Anti-loosening cylindrical threaded part |
| PCT/CN2014/075344 WO2015000316A1 (en) | 2013-07-03 | 2014-04-15 | Anti-loosening cylindrical threaded part |
| US14/898,854 US20160131176A1 (en) | 2013-07-03 | 2014-04-15 | Anti-loosening cylindrical threaded part |
| JP2016520248A JP2016522374A (en) | 2013-07-03 | 2014-04-15 | Locking cylindrical screw member |
| KR1020157035807A KR20160003313A (en) | 2013-07-03 | 2014-04-15 | Anti-loosening cylindrical threaded part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320391528.7U CN203374616U (en) | 2013-07-03 | 2013-07-03 | Anti-loosening cylindrical screw element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203374616U true CN203374616U (en) | 2014-01-01 |
Family
ID=49837145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320391528.7U Expired - Lifetime CN203374616U (en) | 2013-07-03 | 2013-07-03 | Anti-loosening cylindrical screw element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203374616U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291727A (en) * | 2013-07-03 | 2013-09-11 | 许松林 | Anti-loosening cylindrical threaded part |
| WO2015000317A1 (en) * | 2013-07-03 | 2015-01-08 | Xu Songlin | Anti-loosening cylindrical threaded part |
| WO2015000316A1 (en) * | 2013-07-03 | 2015-01-08 | Xu Songlin | Anti-loosening cylindrical threaded part |
| WO2022174758A1 (en) * | 2021-02-17 | 2022-08-25 | 许松林 | Fastener for preventing self-turning motion in loosening direction |
-
2013
- 2013-07-03 CN CN201320391528.7U patent/CN203374616U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291727A (en) * | 2013-07-03 | 2013-09-11 | 许松林 | Anti-loosening cylindrical threaded part |
| WO2015000317A1 (en) * | 2013-07-03 | 2015-01-08 | Xu Songlin | Anti-loosening cylindrical threaded part |
| WO2015000316A1 (en) * | 2013-07-03 | 2015-01-08 | Xu Songlin | Anti-loosening cylindrical threaded part |
| WO2022174758A1 (en) * | 2021-02-17 | 2022-08-25 | 许松林 | Fastener for preventing self-turning motion in loosening direction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203335598U (en) | Looseness-proof cylindrical threaded part | |
| CN103291729B (en) | Anti-loosening threaded piece | |
| CN203374616U (en) | Anti-loosening cylindrical screw element | |
| US20160153486A1 (en) | Anti-loosening threaded part | |
| CN105443542B (en) | Conical external screw thread and screw thread hole connection structure | |
| CN203335597U (en) | Anti-loosening threaded part | |
| CN202125504U (en) | Anti-loosening connecting fastener | |
| CN103291730A (en) | Anti-loose cylindrical threaded part | |
| CN103291727A (en) | Anti-loosening cylindrical threaded part | |
| US20160115990A1 (en) | Anti-loosening cylindrical threaded part | |
| CN206918016U (en) | A kind of angle of articulation is more than the stop nut of the flange surface toothed of lead angle | |
| CN102900740B (en) | Cap-buckled seismic locking pipe nut | |
| US20160131176A1 (en) | Anti-loosening cylindrical threaded part | |
| CN108361267A (en) | A kind of included clamping head stop nut | |
| CN202811779U (en) | Capping type shockproof locking nut | |
| JP2016524680A5 (en) | ||
| CN205047620U (en) | Two nut bolted connection locking device | |
| CN207454497U (en) | A kind of stop nut of machinery enhancing | |
| CN202811778U (en) | Clamp type anti-shock and anti-loose nut | |
| CN207246196U (en) | A kind of anti-loose anti-theft nut with crushing block external member | |
| CN204253551U (en) | A kind of novel slotting bolt | |
| JP2016522374A5 (en) | ||
| CN204152937U (en) | For vibrating the threaded anti-loosing structure on the main shaft larger with impact force | |
| CN204512139U (en) | Automobile bolt | |
| CN203096510U (en) | Nylon abrasion resistant spraying nozzle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180820 Address after: 215400 Taicang science and Technology Industrial Park, Suzhou, Jiangsu (two West Side) Patentee after: SUZHOU DTFLOCK PRECISION FASTENER CO.,LTD. Address before: 215600 Jiangsu, Suzhou, Jiangsu Province, Zhangjiagang, Yang Shi Town, New Town Road, 15 buildings 603 rooms Patentee before: Xu Songlin |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |