CN201149024Y - Screw connection structure - Google Patents
Screw connection structure Download PDFInfo
- Publication number
- CN201149024Y CN201149024Y CNU2007201315894U CN200720131589U CN201149024Y CN 201149024 Y CN201149024 Y CN 201149024Y CN U2007201315894 U CNU2007201315894 U CN U2007201315894U CN 200720131589 U CN200720131589 U CN 200720131589U CN 201149024 Y CN201149024 Y CN 201149024Y
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- Prior art keywords
- thread
- spring
- connection structure
- external
- screw
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Abstract
The utility model relates to a threaded connection structure, which comprises an external thread part and an internal thread part, wherein, an external female thread is arranged on the outer surface of the external thread part, an internal female thread is arranged on the inner surface of the internal thread part, and the thread pitch of the external female thread is equal to the thread pitch of the internal female thread; the threaded connection structure further comprises a spring composed of a spiral-shaped spring wire; when the threaded connection structure is in a connection state, the outer surface of the spring is in threaded fit with and tightly attached to at least one section of the internal female thread; at least one section of the inner surface of the spring is in threaded fit with and tightly attached to at least one section of the external female thread; the threaded connection structure can prevent threaded fasteners from possibly loosing due to strong vibration or rotation by an axial force generated from the spring under a strained condition.
Description
Technical field
The utility model relates to a kind of screw connection structure.
Background technique
In Machine Design, the general threaded fastener that cooperatively interacts that adopts in joint is connected and fixed, and plays locking, fastening effect.But machinery is in daily use, and regular meeting because of running into strong the making of vibrations the loosening shearing that causes takes place between the threaded fastener.Or when threaded fastener is installed on the rotation axis of rotary part, traditional be threaded and fastening means can since rotation cause becoming flexible.
Summary of the invention
The purpose of this utility model is to provide a kind of screw connection structure that can play locking effect when running into sharp pounding or be installed on the rotary axis of workpiece.
Technical solution adopted in the utility model is:
A kind of screw connection structure, comprise external thread piece and inner thread piece, outer surface at described external thread piece is provided with the external female screw thread, is provided with internal female at the internal surface of described inner thread piece, and described external female screw thread equates with the pitch of described internal female; Described screw connection structure also comprises a spring that is made of a spiral spring thread; When described screw connection structure is in coupled condition: the outer surface of described spring and described internal female at least one section screw-thread fit and fitting tightly mutually; At least one section of described spring internal surface with at least one section of described external female screw thread screw-thread fit and fitting tightly mutually; The pitch of described spring and described pitch are unequal.
The pitch of described spring is greater than described pitch.The shape of cross section of described spring thread is circular.The lead angle of described external female screw thread and described internal female equates and all is less than or equal to 12 degree, and more preferred lead angle angle is for being less than or equal to 7 degree.
According to the screw connection structure that the utility model is implemented, adopted one to have compressibility and be connected external thread piece and inner thread piece with elastic spring, the pitch of the pitch of this spring and inside and outside female thread is unequal.Therefore when this screw connection structure is in coupled condition, spring is in stress, and each the circle thread that is in contact with it all is subjected to axial pressure, therefore can produce the axial force that only depends on screw-thread fit to produce in the regular screw threads connection.This axial pressure can effectively prevent between the threaded fastener because strong motion or rotate becoming flexible that institute may cause.
Description of drawings
Accompanying drawing 1 is the plan view of external thread piece;
Accompanying drawing 2 is the thread partial enlarged view of an external female screw thread;
Accompanying drawing 3 is the plan view of spring;
Accompanying drawing 4 is the plan view of inner thread piece;
Accompanying drawing 5 is that the A-A of inner thread piece is to sectional view;
Accompanying drawing 6 is the thread partial enlarged drawing of an internal female;
Accompanying drawing 7 is the user mode schematic representation of implementing according to embodiment 1 of the present utility model;
Accompanying drawing 8 is the partial enlarged view of accompanying drawing 7;
Accompanying drawing 9 is the user mode schematic representation of implementing according to embodiment 2 of the present utility model;
Wherein: 1, external thread piece; 11, external female screw thread; 2, spring; 21, spring thread; 3, inner thread piece; 31, internal female; 4, guide rail; D, pitch; D ', pitch; R, radius; D, nominal diameter.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described:
Embodiment 1:
The screw connection structure of implementing according to the utility model comprises external thread piece 1, inner thread piece 3, spring 2.
As shown in Figures 1 and 2, external thread piece 1 is a bolt, is provided with the external female screw thread 11 that pitch is d at its outer surface, and the sectional shape of its thread is that radius is the circular arc of R.
Shown in accompanying drawing 4,5,6, inner thread piece 3 is for having the bearing of screw, and the surface is provided with the internal female 31 that pitch is d within it, and the sectional shape of its thread is that radius is the circular arc of R.
As shown in Figure 3, described screw connection structure also comprises a spring 2, and the sectional shape of its spring thread 21 is that radius is the circle of R.The pitch of this spring 2 is d ', and therefore the numerical value of this d ' can guarantee that under coupled condition, spring 2 is in compressive state greater than the numerical value of described d.
As mentioned above, the cross section circle radius R owing to spring thread 21 equates with the radius R of the thread cross section outer surface arc of internal female 31 and external female screw thread 11; The nominal diameter of spring 2, external female screw thread 11, internal female 31 is D.So the internal female 31 that spring 2 can make its outer surface and described inner thread piece 3 is being screwed in the described screw of screw-thread fit mutually, the internal surface that described external thread piece 1 can make its external female screw thread 11 and described spring 2 is mutually in the endoporus that is screwed into this spring 2 of screw-thread fit.
Described external female screw thread 11 is 4 degree with the lead angle of described internal female 31.
Shown in accompanying drawing 7 and accompanying drawing 8, utilize the screw connection structure of implementing according to present embodiment to connect the bearing that is positioned on the running shaft.When described inner thread piece 3, spring 2, when external thread piece 1 is in coupled condition, spring 2 is in compressive state.Therefore because each the circle thread that contacts with spring 2 all is subjected to axial pressure, can produces in regular screw threads connect and only depend on thread to cooperate the axial force that is produced.This axial pressure can effectively prevent between the threaded fastener owing to rotate becoming flexible that institute may cause.
In the present embodiment, R=0.5, d=1.1, d '=1.5, D=5.
Embodiment 2:
Among the embodiment 2, external thread piece 1 is a bolt, and inner thread piece 3 is fixed on cage guide 4 on the guide rail base plate by the screw connection structure of implementing according to present embodiment 2 for having the cage guide base plate of screw.
Cage guide in use can produce sharp pounding because of elevator slides up and down along it thereupon, causes shearing so need to adopt shockproof screw connection structure to prevent that it from become flexible because of vibrations.Identical with embodiment 1, present embodiment is threaded by spring 2 between external thread piece 1 and inner thread piece 3 equally mutually.Spring thread 21 sectional shapes of this spring 2 are circle, and the thread sectional shape of internal female 31 and external female screw thread 11 is circular arc.
If adopt general buttress thread form in the existing standard, then the sectional shape of the spring thread 21 of its corresponding spring 2 is rhombuses; If adopt trapezoidal thread, then corresponding spring thread 21 sectional shapes are hexagonal; If adopt the right-angled trapezium screw thread, then corresponding spring 21 sectional shapes are half hexagons.
At spring 2 after heat treatment, spring thread 21 sectional shapes are little for the torsional deformation that round spring 2 is produced, and the thread interlock is accurate, so the external thread piece 1 and the inner thread piece 3 of preferred this spring 2 and cooperation with it.
During use, earlier spring 2 is screwed in the inner thread piece 3, external thread piece 1 is screwed in the worm structure that internal surface constituted by spring 2 again, the degree of depth that is screwed into until external thread piece 1 reaches the required degree of depth of use.Spring 2 height of (under the compressive state) under user mode is not more than the thread section height of inner thread piece 3, guarantees that promptly spring 2 submerges under user mode in the inner thread piece 3 fully.Between spring 2 and the external thread piece 1 mutually the height of the part of screw-thread fit determine according to use condition.
As mentioned above, we are illustrated according to aim of the present utility model fully, but the practitioner of correlative technology field can carry out different variations and enforcement in the scope of technological thought permission of the present utility model.
Claims (5)
1, a kind of screw connection structure comprises external thread piece (1) and inner thread piece (3), it is characterized in that:
Outer surface at described external thread piece (1) is provided with external female screw thread (11), is provided with internal female (31) at the internal surface of described inner thread piece (3), and described external female screw thread (11) equates with the pitch (d) of described internal female (31);
Described screw connection structure also comprises a spring (2) that is made of a spiral spring thread (21);
When described screw connection structure is in coupled condition: the outer surface of described spring (2) and described internal female (11) at least one section screw-thread fit and fitting tightly mutually; At least one section of described spring (2) internal surface with at least one section of described external female screw thread (11) screw-thread fit and fitting tightly mutually;
The pitch of described spring (2) (d ') unequal with described pitch (d).
2, a kind of screw connection structure according to claim 1 is characterized in that: and the pitch of described spring (2) (d ') greater than described pitch (d).
3, a kind of screw connection structure according to claim 1 is characterized in that: the shape of cross section of described spring thread (21) is for circular.
4, a kind of screw connection structure according to claim 1 is characterized in that: the lead angle of described external female screw thread (11) and described internal female (31) equates and all is less than or equal to 12 degree.
5, a kind of screw connection structure according to claim 4 is characterized in that: the lead angle of described external female screw thread (11) and described internal female (31) equates and all is less than or equal to 7 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201315894U CN201149024Y (en) | 2007-12-18 | 2007-12-18 | Screw connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201315894U CN201149024Y (en) | 2007-12-18 | 2007-12-18 | Screw connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201149024Y true CN201149024Y (en) | 2008-11-12 |
Family
ID=40116792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201315894U Expired - Lifetime CN201149024Y (en) | 2007-12-18 | 2007-12-18 | Screw connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201149024Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853037A (en) * | 2020-07-22 | 2020-10-30 | 同济大学 | Check bolt fastener |
-
2007
- 2007-12-18 CN CNU2007201315894U patent/CN201149024Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111853037A (en) * | 2020-07-22 | 2020-10-30 | 同济大学 | Check bolt fastener |
| CN111853037B (en) * | 2020-07-22 | 2021-07-02 | 同济大学 | Check bolt fastener |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SUZHOU FUJI ELEVATOR CO., LTD. Free format text: FORMER OWNER: SUZHOU FUJI ELEVATOR CO., LTD. SUZHOU JIANGNAN ELEVATOR (GROUP) CO., LTD. Owner name: SJEC CORPORATION;SUZHOU FUSHI ELEVATOR CO., LTD. Free format text: FORMER OWNER: JIANGNAN JIAJIE ELEVATOR CO., LTD.;SUZHOU CITY;FUJI ELEVATOR CO., LTD.;SUZHOU CITY Effective date: 20101102 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 215122 NO.88, (FENGTING AVENUE), LOUJIANG ROAD, INDUSTRY PARK, SUZHOU CITY, JIANGSU PROVINCE TO: 215122 NO.28, WEIXIN ROAD, INDUSTRY PARK, SUZHOU CITY, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101102 Address after: 215122 No. 28, Xin Lu, Suzhou Industrial Park, Jiangsu Co-patentee after: SUZHOU FUSHI ELEVATOR Co.,Ltd. Patentee after: SJEC Corp. Address before: 215122 No. 28, Xin Lu, Suzhou Industrial Park, Jiangsu Co-patentee before: SUZHOU FUSHI ELEVATOR Co.,Ltd. Patentee before: SJEC Corp. Co-patentee before: Suzhou Jiangnan Elevator (Group) Co.,Ltd. Effective date of registration: 20101102 Address after: 215122 No. 28, Xin Lu, Suzhou Industrial Park, Jiangsu Co-patentee after: SUZHOU FUSHI ELEVATOR Co.,Ltd. Patentee after: SJEC Corp. Co-patentee after: Suzhou Jiangnan Elevator (Group) Co.,Ltd. Address before: 215122 Jiangsu Province, Suzhou City Industrial Park (Lou Jiang Lu Feng Ting Road No. 88) Co-patentee before: SUZHOU FUSHI ELEVATOR Co.,Ltd. Patentee before: Suzhou Jiangnan Jiajie Elevator Co.,Ltd. Co-patentee before: Suzhou Jiangnan Elevator (Group) Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081112 |