CN2380736Y - Composite screw thread - Google Patents
Composite screw thread Download PDFInfo
- Publication number
- CN2380736Y CN2380736Y CN99229002.3U CN99229002U CN2380736Y CN 2380736 Y CN2380736 Y CN 2380736Y CN 99229002 U CN99229002 U CN 99229002U CN 2380736 Y CN2380736 Y CN 2380736Y
- Authority
- CN
- China
- Prior art keywords
- thread
- handed
- compound
- crest
- tooth
- 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
- 239000002131 composite material Substances 0.000 title abstract 4
- 150000001875 compounds Chemical class 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/02—Shape of thread; Special thread-forms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B33/00—Features common to bolt and nut
- F16B33/02—Shape of thread; Special thread-forms
- F16B2033/025—Shape of thread; Special thread-forms with left-hand thread
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
The utility model relates to a composite screw thread. The composite screw thread is composed of left-hand and right-hand screw threads, which are composite, the root of the left-hand screw threads and the root of the right-hand screw threads mutually cross, and the crest of the left-hand screw threads and the crest of the right-hand screw threads coincide. The utility model has the advantages of novel structure, compactness and wide purpose.
Description
The utility model relates to a kind of compound thread.
Existing screw thread is a kind of screw thread of single rotation direction.The Yamamoto rolling professor of Japan is defined as screw thread in " theory of scyewed joint and calculating " book: " the identical coiled type protruding part in cross section in cylindrical outer surface or internal surface formation is called worm tooth, and the cylinder integral body with worm tooth is called screw thread." this definition indication screw thread is the uniform section complete thread, its screw thread is single rotation direction screw thread, promptly screw thread is left-handed or right-handed thread.This internal thread and outside thread must be same rotation direction screw threads when cooperating.
The purpose of this utility model is to provide a kind of compound thread.
The utility model is design like this, and screw thread is composited by left-handed and screw threads two kinds of rotation directions of dextrorotation, intersects mutually with at the bottom of the right-handed thread tooth at the bottom of its left-handed thread tooth, and its left-handed thread crest overlaps with the right-handed thread crest.
The utility model novel structure, succinct, of many uses.
Fig. 1 is the front view of compound external thread structure.
Fig. 2 is the side view of compound external thread structure.
Fig. 3 is the front view of compound female thread structure.
Fig. 4 is the side view of compound female thread structure.
In Fig. 1, at the bottom of its left-handed thread tooth 1 with 2 intersect mutually at the bottom of the right-handed thread tooth, its left-handed thread crest 3 overlaps with right-handed thread crest 3.
In Fig. 2, at the bottom of its left-handed thread tooth 1 with 2 intersect mutually at the bottom of the right-handed thread tooth, its left-handed thread crest 3 overlaps with right-handed thread crest 3.
In Fig. 3,5 intersect mutually at the bottom of the 4 right-handed thread teeth at the bottom of its left-handed thread tooth, its left-handed thread crest 3 overlaps with right-handed thread crest 6.
In Fig. 4,5 intersect mutually at the bottom of the 4 right-handed thread teeth at the bottom of its left-handed thread tooth, its left-handed thread crest 3 overlaps with right-handed thread crest 6.
Because compound thread is to be composited by left-handed and two kinds of screw threads of dextrorotation, thereby compound internal thread both can cooperate with sinistral external thread, also can cooperate with the dextrorotation outside thread.Compound outside thread both can cooperate with levogyrate inner thread, also can with the dextrorotation screw-internal thread fit.
Compound thread is a kind of discontinuous screw thread of variable cross section, and it has broken through continuous and prismatic definition of conventional threads, thereby has very significant meaning.
Compound thread can be made into screw threads such as v thread, trapezoidal thread, square threaded form.
Compound thread can be used for the connection of threaded fastener, the aspects such as transmission of threaded piece, has purposes widely.
Claims (5)
1, a kind of compound thread is characterized in that: screw thread is composited by left-handed and screw threads two kinds of rotation directions of dextrorotation, intersects mutually with at the bottom of the right-handed thread tooth at the bottom of its left-handed thread tooth, and its left-handed thread crest overlaps with the right-handed thread crest.
2, a kind of compound thread as claimed in claim 1 is characterized in that: described compound thread is an outside thread.
3, a kind of compound thread as claimed in claim 1 is characterized in that: described compound thread is an internal thread.
4, a kind of compound thread as claimed in claim 1 is characterized in that: described left-handed identical with right-handed thread tooth distance.
5, a kind of compound thread as claimed in claim 1 is characterized in that: described left-handed and right-handed thread tooth are apart from different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99229002.3U CN2380736Y (en) | 1999-07-27 | 1999-07-27 | Composite screw thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99229002.3U CN2380736Y (en) | 1999-07-27 | 1999-07-27 | Composite screw thread |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2380736Y true CN2380736Y (en) | 2000-05-31 |
Family
ID=34018296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99229002.3U Expired - Lifetime CN2380736Y (en) | 1999-07-27 | 1999-07-27 | Composite screw thread |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2380736Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002057639A1 (en) * | 2001-01-19 | 2002-07-25 | Zong Cai Tang | A composite screw structure having elliptical cross-section of minor diameter thereof |
| CN1114047C (en) * | 1999-07-27 | 2003-07-09 | 唐宗才 | Compound thread |
| CN106855076A (en) * | 2017-01-10 | 2017-06-16 | 宝鸡文理学院 | The multi-thread new-type screw thread of compound tooth form |
-
1999
- 1999-07-27 CN CN99229002.3U patent/CN2380736Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1114047C (en) * | 1999-07-27 | 2003-07-09 | 唐宗才 | Compound thread |
| WO2002057639A1 (en) * | 2001-01-19 | 2002-07-25 | Zong Cai Tang | A composite screw structure having elliptical cross-section of minor diameter thereof |
| CN106855076A (en) * | 2017-01-10 | 2017-06-16 | 宝鸡文理学院 | The multi-thread new-type screw thread of compound tooth form |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |