CN213575049U - Anti-loosening combined screw - Google Patents
Anti-loosening combined screw Download PDFInfo
- Publication number
- CN213575049U CN213575049U CN202021814387.1U CN202021814387U CN213575049U CN 213575049 U CN213575049 U CN 213575049U CN 202021814387 U CN202021814387 U CN 202021814387U CN 213575049 U CN213575049 U CN 213575049U
- Authority
- CN
- China
- Prior art keywords
- mounting hole
- head
- groove
- lock lever
- locking
- 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.)
- Active
Links
Images
Abstract
The utility model relates to the technical field of machinery, in particular to an anti-loosening combined screw, which comprises a head and a rod part fixed on the head, wherein a screwing groove is arranged at the central position of the head, a first external thread is arranged on the outer wall surface of the rod part, a mounting hole is arranged inside the rod part and communicated with the inside of the screwing groove, an internal thread is arranged at the part of the hole wall surface of the mounting hole, which is close to the screwing groove, a hole opening of the mounting hole, which faces away from the screwing groove, is of a necking structure, and at least two expansion notches are arranged at one end of the rod part, which is away from the head; the inside of mounting hole is equipped with the check lock lever, and the one end of check lock lever is equipped with the locking groove, and one section that is close to the locking groove on the outer wall of check lock lever is equipped with the second external screw thread, and the second external screw thread cooperatees with the internal thread, and the one end that the locking groove was kept away from to the check lock lever is the throat structure, and the throat structure of check lock lever tip cooperatees with the throat structure in mounting hole drill way. The utility model has the characteristics of be difficult to loose right, water-proof effects is better.
Description
Technical Field
The utility model relates to the technical field of machinery, in particular to locking combination screw that moves.
Background
The screw mainly comprises an end part and a thread part of the screw, the end part of the screw is generally flat-headed or round-headed, a linear or cross-shaped groove is arranged at the end part, the screw is commonly called as a flat-headed screw or a round-headed screw, and the screw can be screwed down clockwise and unscrewed counterclockwise.
The patent that publication number is "CN 210397410U" discloses a novel waterproof locking screw that moves, it includes the nut, certainly nut downwardly extending's screw rod and the screw thread of setting in the screw rod outside, the nut is including opening face and holding surface, the holding surface is located opening face below, the holding surface includes plane and arc surface, plane and arc surface integrated into one piece, set up instrument on the plane and screw up the groove, it has a plurality of rings of CD lines to screw up the groove outside radial distribution in this instrument, the holding surface is the arcwall face of indent, is provided with a plurality of rings on this arcwall face, the nut forms an annular step with the junction of screw rod, the screw thread by the step begins to extend to screw rod tip direction, and screw thread and screw rod integrated into one piece. This patent possesses simple structure, small and exquisite, and locking not hard up can hold completely in the cambered surface of locking surface indent by the structure simultaneously, reaches waterproof purpose, and the practicality is strong, is worth promoting. However, the patent still has the problem that the threaded screw is easy to loosen after being used for a long time, and particularly when the threaded screw is used on underwater equipment, once the threaded screw is loosened, water seeps from the loosened position, so that the equipment is damaged.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the above-mentioned technical problem that current screw exists, provide one kind be difficult to the pine to, the better locking combination screw that moves of water-proof effects.
The technical scheme of the utility model: a locking combination screw comprises a head and a rod part fixed on the head, wherein a screwing groove is formed in the center of the head, a first external thread is arranged on the outer wall surface of the rod part, a mounting hole is formed in the rod part and communicated with the inside of the screwing groove, an internal thread is arranged on the part, close to the screwing groove, of the hole wall surface of the mounting hole, a hole opening, facing the direction away from the screwing groove, of the mounting hole is of a necking structure, and at least two expansion notches are formed in one end, far away from the head, of the rod part; the inside of mounting hole is equipped with the check lock lever, the one end of check lock lever is equipped with the locking groove, the one section that is close to the locking groove on the outer wall of check lock lever is equipped with the second external screw thread, the second external screw thread cooperatees with the internal thread, the one end that the locking groove was kept away from to the check lock lever is the throat structure, the throat structure of check lock lever tip cooperatees with the throat structure in mounting hole drill way. The screwing groove in the utility model is used for a screw driver or a hexagon wrench to exert force on the head of the screw, so that the screw can be smoothly and firmly screwed in a place needing to be used; the locking groove is used for enabling a screwdriver or a hexagonal wrench to exert force on the locking rod, and the locking rod is smoothly and firmly screwed into the mounting hole after the second external threads are matched with the internal threads; the mounting hole is formed in the rod part and used for mounting the locking rod, the hole opening of the mounting hole facing the direction away from the screwing groove is set to be of a necking structure, one end, away from the locking groove, of the locking rod is set to be of the necking structure, when the locking rod is screwed under external acting force, the necking structure at the end part of the locking rod can gradually open the hole opening of the mounting hole, under the opposite action of the opening acting force at the end part of the locking rod and the screwing acting force of the first external thread, the rod part is fixed more firmly, so that when the screw is screwed in use, the screw cannot be loosened even if being used for a long time, and has strong meshing acting force with the groove position to be screwed, and even if the screw is used on a tool or equipment working underwater for a long time, the situation that the tool or the equipment is damaged due to water seepage caused by the loosening of the screw cannot occur; the utility model discloses a one end that lies in keeping away from the head in pole portion sets up two at least extension incisions, makes the throat end of check lock lever can be more smooth strut pole portion from the drill way department of mounting hole, as early as possible realization check lock rod tip strut effort and the emergence of the dual effort of the tightening effort of first external screw thread.
Preferably, the part of the wall surface of the mounting hole, which is far away from the screwing groove, is a smooth surface; the section of the outer wall surface of the locking rod, which is far away from the locking groove, is a smooth surface; the diameter of the section where the smooth surface of the locking rod is located is smaller than the diameter of the section where the smooth surface of the mounting hole is located. Make the mounting hole of putting into that the check lock lever initial stage can be smooth, firm, the later stage of being convenient for is to the stable effort of applying of check lock lever, lets the gradual screw in mounting hole of check lock lever, and the emergence of the dual effort of the tight effort of the effect of strutting of stable realization check lock lever tip and the tightening effort of first external screw thread.
Preferably, the head and the stem are of unitary construction; the cross section of the outer wall surface of the head part is of a regular polygon structure, and/or the cross section of the screwing groove is of a regular polygon structure. The cross section of the outer wall surface of the head part can be set to be a regular polygon structure, and the rod part is screwed in by applying force to the outer wall surface of the head part by using a spanner; the cross section of the screwing groove can be set to be a regular polygon structure, and the screwing of the rod part is realized by applying force to the screwing groove on the head part by using a spanner; has selectivity.
Preferably, the cross section of the locking groove is in a regular polygon structure.
Preferably, one end of the rod part far away from the head part is in a round angle structure or a chamfer angle structure. The end part of the rod part can be quickly aligned with the slot to be screwed in, and then the rod part is quickly screwed in the slot to be screwed in.
Preferably, the opening of the mounting hole facing away from the screwing groove is in a cone frustum structure.
The utility model discloses following beneficial effect has:
(1) the screwing groove is used for a screwdriver or a hexagonal wrench to apply force to the head of the screw so that the screw can be smoothly and firmly screwed in a place needing to be used; the locking groove is used for enabling a screwdriver or a hexagonal wrench to exert force on the locking rod, and the locking rod is smoothly and firmly screwed into the mounting hole after the second external threads are matched with the internal threads; the mounting hole is formed in the rod part and used for mounting the locking rod, the hole opening of the mounting hole facing the direction away from the screwing groove is set to be of a necking structure, one end, away from the locking groove, of the locking rod is set to be of the necking structure, when the locking rod is screwed under external acting force, the necking structure at the end part of the locking rod can gradually open the hole opening of the mounting hole, under the opposite action of the opening acting force at the end part of the locking rod and the screwing acting force of the first external thread, the rod part is fixed more firmly, so that when the screw is screwed in use, the screw cannot be loosened even if being used for a long time, and has strong meshing acting force with the groove position to be screwed, and even if the screw is used on a tool or equipment working underwater for a long time, the situation that the tool or the equipment is damaged due to water seepage caused by the loosening of the screw cannot occur;
(2) the end, far away from the head, of the rod part is provided with at least two expansion notches, so that the necking end of the locking rod can smoothly support the rod part from the orifice of the mounting hole, and the expansion acting force of the end part of the locking rod and the screwing acting force of the first external thread can be realized as soon as possible.
Drawings
FIG. 1 is a perspective view of the structure of the present invention at the mid-rod portion;
FIG. 2 is a schematic structural view of the screwing groove of the present invention;
FIG. 3 is a schematic view of the structure of the middle expansion slit of the present invention;
FIG. 4 is a schematic view of a first structure at the locking bar of the present invention;
FIG. 5 is a schematic structural view of the locking groove of the present invention;
fig. 6 is a second schematic structural diagram of the locking rod of the present invention.
The labels in the figures are: 100-head, 101-driving groove, 200-rod, 201-first external thread, 202-mounting hole, 203-internal thread, 204-expanding notch, 300-locking rod, 301-locking groove, 302-second external thread.
Detailed Description
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
A locking combination screw comprises a head 100 and a rod 200 fixed on the head as shown in fig. 2, wherein a screwing groove 101 is arranged at the center of the head, a first external thread 201 is arranged on the outer wall surface of the rod, a mounting hole 202 as shown in fig. 1 is arranged inside the rod, the mounting hole is communicated with the inside of the screwing groove, an internal thread 203 is arranged at the part, close to the screwing groove, of the hole wall surface of the mounting hole, the hole opening of the mounting hole facing to the direction far away from the screwing groove is of a necking structure, and at least two expanding notches 204 as shown in fig. 3 are arranged at one end, far away from the head, of the rod; the inside of mounting hole is equipped with locking lever 300 as shown in fig. 4, and the one end of locking lever is equipped with locking groove 301 as shown in fig. 5, and the one section that is close to the locking groove on the outer wall of locking lever is equipped with second external screw thread 302 as shown in fig. 6, and second external screw thread cooperatees with the internal thread, and the one end that the locking lever is kept away from the locking groove is the throat structure, and the throat structure of locking lever tip cooperatees with the throat structure in mounting hole drill way.
The part of the wall surface of the mounting hole, which is far away from the screwing groove, is a smooth surface; one section of the outer wall surface of the locking rod, which is far away from the locking groove, is a smooth surface; the diameter of the section where the smooth surface of the locking rod is located is smaller than the diameter of the section where the smooth surface of the mounting hole is located.
The head part and the rod part are of an integral structure; the cross section of the outer wall surface of the head part is of a regular polygon structure, and/or the cross section of the screwing groove is of a regular polygon structure.
The cross section of the locking groove is of a regular polygon structure.
The end of the rod part far away from the head part is of a round angle structure or a chamfer angle structure.
The opening of the mounting hole facing the direction away from the screwing groove is in a cone frustum structure.
The utility model discloses a theory of operation does:
aligning the end of the rod part 200 with the slot opening, screwing the head part 100 by using a hexagonal wrench, and screwing the first external thread 201 of the rod part into the slot after matching with the thread of the slot; then put into mounting hole 202 with check lock lever 300 in, use the hexagonal spanner to twist the check lock lever, let check lock lever screw in mounting hole behind second external screw thread 302 and the cooperation of internal thread 203, until the throat structure of check lock lever tip and the circular cone frustum shape structure laminating cooperation back in mounting hole drill way, the check lock lever continues to twist, the mounting hole is strutted gradually, until the check lock lever is twisted the mounting hole completely, the mounting hole is also strutted to required aperture by the check lock lever, guarantee that the stability and the firm degree of pole portion twist into the trench, even the very weak problem of screw emergence of taking place for a long time yet, just, the utility model discloses use in the instrument and the equipment of using under water, for example use on the motor under water, also can not take place because of the not hard up condition that takes place the infiltration damage instrument or equipment.
Claims (6)
1. The utility model provides a locking combination screw that moves which characterized by: the head-mounted type screw driver comprises a head (100) and a rod part (200) fixed on the head, wherein a screwing groove (101) is formed in the center of the head, a first external thread (201) is formed in the outer wall surface of the rod part, a mounting hole (202) is formed in the rod part and is communicated with the inside of the screwing groove, an internal thread (203) is formed in the part, close to the screwing groove, of the wall surface of the mounting hole, the mounting hole is of a necking structure towards a hole opening far away from the screwing groove, and at least two expansion notches (204) are formed in one end, far away from the head, of the rod part; the inside of mounting hole is equipped with check lock lever (300), the one end of check lock lever is equipped with locking groove (301), one section that is close to the locking groove on the outer wall of check lock lever is equipped with second external screw thread (302), the second external screw thread cooperatees with the internal thread, the one end that the locking groove was kept away from to the check lock lever is the throat structure, the throat structure of check lock lever tip cooperatees with the throat structure in mounting hole drill way.
2. The anti-loosening combination screw as set forth in claim 1, wherein: the part of the wall surface of the mounting hole, which is far away from the screwing groove, is a smooth surface; the section of the outer wall surface of the locking rod, which is far away from the locking groove, is a smooth surface; the diameter of the section where the smooth surface of the locking rod is located is smaller than the diameter of the section where the smooth surface of the mounting hole is located.
3. The anti-loosening combination screw as set forth in claim 1, wherein: the head part and the rod part are of an integral structure; the cross section of the outer wall surface of the head part is of a regular polygon structure, and/or the cross section of the screwing groove is of a regular polygon structure.
4. The anti-loosening combination screw as set forth in claim 1, wherein: the cross section of the locking groove is of a regular polygon structure.
5. The anti-loosening combination screw as set forth in claim 1, wherein: the end of the rod part, which is far away from the head part, is of a round angle structure or a chamfer angle structure.
6. The anti-loosening combination screw as set forth in claim 1, wherein: the opening of the mounting hole facing the direction far away from the screwing groove is in a cone frustum-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021814387.1U CN213575049U (en) | 2020-08-26 | 2020-08-26 | Anti-loosening combined screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021814387.1U CN213575049U (en) | 2020-08-26 | 2020-08-26 | Anti-loosening combined screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213575049U true CN213575049U (en) | 2021-06-29 |
Family
ID=76556708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021814387.1U Active CN213575049U (en) | 2020-08-26 | 2020-08-26 | Anti-loosening combined screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213575049U (en) |
-
2020
- 2020-08-26 CN CN202021814387.1U patent/CN213575049U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2529714A1 (en) | Connector | |
| CA2501169A1 (en) | Tolerance compensating mounting device | |
| CN103452995A (en) | Nut and mounting method thereof | |
| HU222312B1 (en) | Screw for securing metal and/or plastic sections or plates on a substructure | |
| US5403137A (en) | Process and device for attaching an object to a lightweight material wall | |
| KR20200113510A (en) | Nuts to prevent screws loosening | |
| CN213575049U (en) | Anti-loosening combined screw | |
| JP2012172780A (en) | Locking device for fastener | |
| WO2005021981A3 (en) | Simplified installation captive panel fastener | |
| CN213575013U (en) | Anti-loosening screw | |
| CN110081059A (en) | A kind of anti-skidding tapping screw of antirust | |
| CN210440380U (en) | Self-tapping and self-drilling screw with good anti-loosening effect | |
| KR20060110998A (en) | Screw | |
| CN210153057U (en) | Big flat-head self-tapping screw | |
| US2262200A (en) | Nut lock | |
| CN211693125U (en) | Adjustable locking sleeve tension bolt for automobile | |
| CN207777387U (en) | A kind of check bolt | |
| CN203463459U (en) | Nut | |
| CN202149120U (en) | Expansion head bolt | |
| CN216241768U (en) | Internal and external thread nut with locking retarding structure | |
| CN2700628Y (en) | Theftproof bolt | |
| CN219452653U (en) | Fastening screw nut assembly | |
| CN219262912U (en) | Self-tapping screw | |
| CN210318114U (en) | Nut and screw rod connected with inner side and outer side of penetrating frame | |
| CN212564003U (en) | Novel screw |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |