CN108071647B - Screw capable of preventing screwing askew - Google Patents
Screw capable of preventing screwing askew Download PDFInfo
- Publication number
- CN108071647B CN108071647B CN201711312655.2A CN201711312655A CN108071647B CN 108071647 B CN108071647 B CN 108071647B CN 201711312655 A CN201711312655 A CN 201711312655A CN 108071647 B CN108071647 B CN 108071647B
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- screw
- screw rod
- buckle
- spring
- hole
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- 230000009471 action Effects 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 6
- 230000006872 improvement Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
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- 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
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
- F16B35/044—Specially-shaped ends
- F16B35/047—Specially-shaped ends for preventing cross-threading, i.e. preventing skewing of bolt and nut
-
- 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
- F16B37/00—Nuts or like thread-engaging members
-
- 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
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bolts, Nuts, And Washers (AREA)
Abstract
The invention discloses an anti-askew screw, which comprises a screw module and a screw head, wherein the screw module consists of a screw cover, a screw part, a buckle cover, a side spring, a ring part and a movable buckle; the ring part is sleeved on the screw rod part and is fixedly connected with the buckle of the ring part through a screw rod cover; the screw rod part is connected with the screw rod head part through threads; during the use, earlier with the screw head front end insert the screw hole, paste the screw head terminal surface on the face at screw hole place simultaneously, screw head terminal surface and screw hole axial are the vertical state for screw head axial and screw hole axial reach parallel state, avoid appearing the screw and twist askew phenomenon.
Description
Technical Field
The invention relates to an anti-skew screw, relates to the field of fasteners, and belongs to the field of mechanical parts.
Background
Generally, in order to facilitate assembly, the front end of the screw is chamfered, the chamfer at the front end of the screw can only ensure the screwing of the screw and a threaded hole, but cannot ensure the verticality of the surface where the screw and the threaded hole are located, and the worker often can twist the screw askew when screwing the screw into the threaded hole on the premise of no certain work experience.
Disclosure of Invention
The invention mainly aims to provide a screw capable of preventing screwing in a screw hole from being askew.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: the utility model provides an anti-twist askew screw, includes screw rod module and screw head, the screw rod module includes screw rod lid, screw rod portion and ring portion, ring portion overlaps on the screw rod portion, be equipped with first lug below the screw rod lid, the ring portion inboard is equipped with first ring channel, be equipped with first buckle above the first ring channel, first lug with first buckle mutually supports, the screw rod lid with ring portion passes through first lug with first buckle is connected fixedly.
In a further improvement, the screw module further comprises a spring and a side spring, a second annular groove is formed in the inner side of the ring part, a small hole is formed in the second annular groove, the spring is fixed in the small hole, and in an initial state, the screw part is jacked to the screw cover under the action of the spring; the side hole is formed in the inner side face of the ring portion, and the side spring is fixed in the side hole.
The screw module is further improved, the screw module further comprises a movable buckle and a buckle cover, a through groove and a second buckle are arranged on a second annular groove at the position of the side hole, the movable buckle is installed in the through groove, the buckle cover and the second buckle are fixedly connected, and in an initial state, the movable buckle is acted by the side spring and is located at the inner limit position of the ring portion.
In a further improvement, a second bump is arranged on the lower side of the upper end face of the screw rod part, and when the screw rod part is pressed downwards, the second bump limits the movable buckle to the limit position outside the ring part under the action of the spring and the side spring.
The improved structure is characterized in that a threaded hole is formed in the center of the head of the screw, a circular groove is formed in one end face of the head of the screw, and an annular groove with the diameter larger than that of the groove is formed in the bottom of the circular groove in the radial direction.
In a further improvement, the screw head is connected with the screw rod part through threads, the end face of the screw head is in a vertical state with the screw rod part in the axial direction, and the front end of the screw rod part is screwed in from a threaded hole on the side of the end face of the screw head with the circular groove.
In a further improvement, the front end of the screw rod part is provided with a boss with the diameter smaller than the inner diameter of the screw thread and used for hole finding, in an initial state, the boss exceeds the end surface of the screw head part without the circular groove, and the thread part of the screw rod part does not exceed the end surface of the screw head part without the circular groove.
In a further improvement, the spring is fixed in the small hole through glue, and the side spring is fixed in the side hole through glue.
Compared with the prior art, the invention has the advantages that: the perpendicularity of the screw and the surface where the threaded hole is located is guaranteed, and the condition that the screw is askew when the screw is screwed into the threaded hole by an operator is avoided on the premise that certain working experience is not available.
Drawings
FIG. 1 is a schematic block diagram of a preferred embodiment of the present invention;
FIG. 2 is a schematic view of an assembled structure 1 according to a preferred embodiment of the present invention;
FIG. 3 is a schematic view of a ring assembly according to a preferred embodiment of the present invention 1;
FIG. 4 is a schematic view of a ring assembly according to a preferred embodiment of the present invention 2;
FIG. 5 is a schematic view of an assembled structure according to a preferred embodiment of the present invention 2;
FIG. 6 is a schematic diagram of an initial state in accordance with a preferred embodiment of the present invention;
FIG. 7 is a schematic view of a pre-threaded state according to a preferred embodiment of the present invention;
fig. 8 is a schematic view of a state after screwing in according to a preferred embodiment of the present invention.
In the above drawings: 1. a screw head; 2. a screw cap; 3. a screw section; 4. a ring portion; 5. a first bump; 6. a second bump; 7. covering; 8. a side spring; 9. a spring; 10. moving the buckle; 11. a boss; 12. a first annular groove; 13. a second annular groove; 14. a small hole; 15. a side hole; 16. a through groove; 17. a second buckle; 18. a first buckle.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
As shown in FIGS. 1-8, one embodiment of the present invention includes a screw module and a screw head 1.
The screw module consists of a screw cover 2, a screw part 3, a buckle cover 7, a side spring 8, a spring 9, a ring part 4 and a movable buckle 10; ring portion 4 overlaps on screw rod portion 3, is equipped with first lug 5 below screw rod lid 2, and ring portion 4 inboard is equipped with first ring channel 12, is equipped with first buckle 18 above the first ring channel 12, and first lug 5 mutually supports with first buckle 18, and screw rod lid 2 is connected fixedly with first buckle 18 through first lug 5 with ring portion 4.
A second annular groove 13 is arranged on the inner side of the ring part 4, four small holes 14 are arranged on the second annular groove 13, the spring 9 is fixedly bonded in the small holes 14 through glue, and in an initial state, the screw rod part 3 is jacked to the screw rod cover 2 under the action of the spring 9, namely the screw rod part 3 is not contacted with the movable buckle 10; four side holes 15 are arranged on the inner side surface of the ring part 4, and the side spring 8 is fixedly bonded in the side holes 15 through glue.
Four through grooves 16 and four second buckles 17 are arranged on the second annular groove 13 at the side hole 15, the movable buckle 10 is installed in the through grooves 16 and is fixedly connected through the buckle cover 7 and the second buckles 17, and in an initial state, the movable buckle 10 is acted by the side spring 8 and is located at the limit position of the inner side of the ring part 4; the lower side of the upper end surface of the screw part 3 is provided with a second lug 6, and when the screw part 3 is pressed downwards, the second lug 6 limits the moving buckle 10 to the outer limit position of the ring part 4 through the action of the spring 9 and the side spring 8.
The center of the screw head part 1 is provided with a threaded hole, one end face of the screw head part 1 is provided with a circular groove, and the bottom of the circular groove is radially provided with an annular groove with the diameter larger than that of the circular groove; the front end of the screw rod part 3 is provided with a boss 11 with the diameter smaller than the inner diameter of the thread, so that the hole searching effect is achieved.
In the initial state, after the screw module is installed, the screw part 3 is in threaded connection with the screw head 1, the front end of the screw part 3 is screwed in from a threaded hole on the end face side of the screw head 1 with the groove, the boss 11 at the front end of the screw part 3 exceeds the end face of the screw head 1 without the groove, and the threaded part of the screw part 3 does not exceed the end face of the screw head 1 without the groove; in the initial state, the axial direction of the screw part 3 is vertical to the end surface of the screw head part 1; in the initial state, the mobile fastener 10 is acted by the side spring 8 and is located at the limit position inside the ring part 4, and the screw part 3 is acted by the spring 9 and is pressed against the screw cover 2, namely the screw part 3 is not contacted with the mobile fastener 10.
When the screw driver is used, the boss 11 at the front end of the screw part 3 is inserted into the threaded hole, and the end surface of the screw head 1 is attached to the surface where the threaded hole is located, so that the end surface of the screw head 1 is in a vertical state with the axial direction of the threaded hole, the axial direction of the screw part 3 is parallel to the axial direction of the threaded hole, and the boss 11 at the front end of the screw part 3 plays a role in finding the hole, namely playing a role in positioning; when the screw rod part 3 is rotated, a downward force is applied to the screw rod part 3, the screw rod part 3 moves downwards to drive the movable buckle 10 to move outwards, and at the moment, the movable buckle 10 is positioned at the limit position outside the ring part 4; continuously rotating the screw part 3, screwing the screw part 3 into the threaded hole, and automatically finely adjusting the screw head 1 along with the screw part 3 entering the threaded hole, so that the axial direction of the screw part 3 and the axial direction of the threaded hole reach the same central position, and the end surface of the screw head 1 is always attached to the surface of the threaded hole in the process; along with screw rod portion 3 screw in screw hole, the screw rod module moves down, moves to detain 10 and gets into in the annular groove of screw head portion 1, connects fixedly through the third buckle, and the third buckle has played the effect of location simultaneously, because screw rod portion 3 has passed through threaded connection with the screw hole at this moment, the spring 9 in the ring portion 4 can't be with screw rod portion 3 top, moves to detain 10 promptly and is fixed.
When the screw needs to be screwed out, a downward force is applied to the screw rod part 3, the screw rod part 3 is rotated reversely, the screw rod part 3 is pressed, the movable buckle 10 is always positioned at the limit position outside the ring part 4, namely, the screw head part 1 is still kept connected with the screw rod module after the screw is screwed out; when screwing out, a downward force is not applied, the screw rod part 3 moves upwards under the action of the spring 9 in the ring part 4, the moving buckle 10 moves towards the inner side of the ring part 4 under the action of the side spring 8, namely, the screw head part 1 is separated from the screw rod module after the screw is screwed out.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a prevent screwing up askew screw which characterized in that: the screw rod module comprises a screw rod module and a screw head (1), wherein the screw rod module comprises a screw rod cover (2), a screw rod part (3) and a ring part (4), the ring part (4) is sleeved on the screw rod part (3), a first convex block (5) is arranged below the screw rod cover (2), a first annular groove (12) is arranged on the inner side of the ring part (4), a first buckle (18) is arranged above the first annular groove (12), the first convex block (5) is matched with the first buckle (18), and the screw rod cover (2) and the ring part (4) are connected and fixed with the first buckle (18) through the first convex block (5); the screw module further comprises a spring (9) and a side spring (8), a second annular groove (13) is formed in the inner side of the ring portion (4), a small hole (14) is formed in the second annular groove (13), the spring (9) is fixed in the small hole (14), and in an initial state, the screw portion (3) is pressed against the screw cover (2) under the action of the spring (9); a side hole (15) is formed in the inner side surface of the ring part (4), and the side spring (8) is fixed in the side hole (15); the screw module further comprises a movable buckle (10) and a buckle cover (7), a through groove (16) and a second buckle (17) are arranged on a second annular groove (13) at the side hole (15), the movable buckle (10) is installed in the through groove (16) and is fixedly connected through the buckle cover (7) and the second buckle (17), and in an initial state, the movable buckle (10) is acted by the side spring (8) and is located at the inner limit position of the ring part (4); the lower side of the upper end face of the screw rod part (3) is provided with a second bump (6), and when the screw rod part (3) is pressed downwards, the second bump (6) limits the moving buckle (10) to the outer limit position of the ring part (4) under the action of the spring (9) and the side spring (8).
2. The anti-skew screw of claim 1, wherein: the screw head is characterized in that a threaded hole is formed in the center of the screw head (1), a circular groove is formed in one end face of the screw head (1), and an annular groove with the diameter larger than that of the circular groove is formed in the bottom of the circular groove in the radial direction.
3. A skew-preventing screw as claimed in claim 2, wherein: the screw head (1) is connected with the screw rod part (3) through threads, the axial direction of the end face of the screw head (1) is vertical to the axial direction of the screw rod part (3), and the front end of the screw rod part (3) is screwed into a threaded hole on the side of the end face of the screw head (1) with the groove.
4. A skew screw as claimed in any one of claims 1 to 3, wherein: the front end of the screw rod part (3) is provided with a boss (11) with the diameter smaller than the inner diameter of the screw thread and used for hole finding, in an initial state, the boss (11) exceeds the end surface of the screw head part (1) without a circular groove, and the thread part of the screw rod part (3) does not exceed the end surface of the screw head part (1) without a circular groove.
5. The anti-skew screw of claim 1, wherein: the spring (9) is fixed in the small hole (14) through glue, and the side spring (8) is fixed in the side hole (15) through glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711312655.2A CN108071647B (en) | 2017-12-03 | 2017-12-03 | Screw capable of preventing screwing askew |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711312655.2A CN108071647B (en) | 2017-12-03 | 2017-12-03 | Screw capable of preventing screwing askew |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108071647A CN108071647A (en) | 2018-05-25 |
| CN108071647B true CN108071647B (en) | 2020-07-21 |
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ID=62157882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711312655.2A Active CN108071647B (en) | 2017-12-03 | 2017-12-03 | Screw capable of preventing screwing askew |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108071647B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4929136A (en) * | 1989-03-17 | 1990-05-29 | Spar Aerospace Limited | Floating Matable element |
| JP2001234917A (en) * | 2000-02-23 | 2001-08-31 | Iwata Bolt Kk | Self-locking bolt |
| US6328515B1 (en) * | 1996-09-24 | 2001-12-11 | Textron Inc. | Fastener with anti-cross-threading point and method of assembly |
| CN101543863A (en) * | 2008-03-25 | 2009-09-30 | 鸿富锦精密工业（深圳）有限公司 | Connecting device |
| CN106151225A (en) * | 2016-08-16 | 2016-11-23 | 厦门立业卫浴工业有限公司 | A kind of quick mounting nut |
| CN205937393U (en) * | 2016-08-25 | 2017-02-08 | 苏州鸿益进五金有限公司 | Connecting screw |
-
2017
- 2017-12-03 CN CN201711312655.2A patent/CN108071647B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4929136A (en) * | 1989-03-17 | 1990-05-29 | Spar Aerospace Limited | Floating Matable element |
| US6328515B1 (en) * | 1996-09-24 | 2001-12-11 | Textron Inc. | Fastener with anti-cross-threading point and method of assembly |
| JP2001234917A (en) * | 2000-02-23 | 2001-08-31 | Iwata Bolt Kk | Self-locking bolt |
| CN101543863A (en) * | 2008-03-25 | 2009-09-30 | 鸿富锦精密工业（深圳）有限公司 | Connecting device |
| CN106151225A (en) * | 2016-08-16 | 2016-11-23 | 厦门立业卫浴工业有限公司 | A kind of quick mounting nut |
| CN205937393U (en) * | 2016-08-25 | 2017-02-08 | 苏州鸿益进五金有限公司 | Connecting screw |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108071647A (en) | 2018-05-25 |
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