CN110878790A - Fixed reliable fixed screw structure - Google Patents
Fixed reliable fixed screw structure Download PDFInfo
- Publication number
- CN110878790A CN110878790A CN201911232681.3A CN201911232681A CN110878790A CN 110878790 A CN110878790 A CN 110878790A CN 201911232681 A CN201911232681 A CN 201911232681A CN 110878790 A CN110878790 A CN 110878790A
- Authority
- CN
- China
- Prior art keywords
- sleeve body
- screw
- hook
- end part
- sleeve
- 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.)
- Pending
Links
- 210000000078 claw Anatomy 0.000 claims abstract description 33
- 230000000694 effects Effects 0.000 claims abstract description 12
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 7
- 239000000758 substrate Substances 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 240000004282 Grewia occidentalis Species 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007779 soft material Substances 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
-
- 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
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
- F16B39/32—Locking by means of a pawl or pawl-like tongue
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
The invention discloses a fixed screw structure reliable in fixation, which comprises a sleeve and a screw rod which are matched, wherein the sleeve comprises a sleeve body and a movable end part, threaded holes matched with external threads on the screw rod are formed in the sleeve body and the movable end part, an expandable expansion claw is arranged between the sleeve body and the movable end part, the screw rod comprises a rod part and a nut, the rod part comprises a threaded section and a polished rod section, and the polished rod section is arranged between the threaded section and the nut. The hook claw is designed to be in a closed state at ordinary times, and when a screw enters in a rotating mode, the hook claw is in an open state, so that the fixing effect is achieved, the contact area of the hook claw and a fixed base material is large, deformation and loosening are avoided, and the fixing is reliable; and the dismounting is simple and convenient, and the reuse can be realized.
Description
Technical Field
The invention relates to the technical field of screws, in particular to a fixed screw structure with reliable fixation.
Background
Set screws are common connecting workpieces. Current fixed screw generally includes matched with screw and nut, and the in-process of installation also utilizes the rotatory combination of screw thread of screw and nut fixed, but when some screw fixation are than soft material, because of the nut extrusion can lead to the material to warp loosely to the material is uneven around, and the time can lead to the material to warp after a long time, and fixed reliability is poor to can damage fixed substrate.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a fixing screw structure with reliable fixing, so as to achieve the purposes of reliable fixing and difficult damage to a fixed substrate.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
this fixed reliable fixed screw structure, including matched with sleeve and lead screw, the sleeve includes sleeve body and activity tip, all be equipped with in sleeve body and the activity tip with the lead screw on the external screw thread matched with screw hole, be equipped with the inflation that can open between sleeve body and the activity tip and collude the claw, the lead screw includes pole portion and nut, pole portion includes screw thread section and polished rod section, the polished rod section is established between screw thread section and nut.
Furthermore, the sleeve body is a hollow cylinder, and an end flange is arranged at the outer end part of the sleeve body.
The sleeve body is provided with an external convex rib.
The length of the thread section of the screw rod is larger than that of the polished rod section.
The external diameter of the thread section of the screw rod is larger than the internal diameter of the sleeve body, and the thread section is matched with the thread hole in the movable end part.
The expansion hook claw comprises a hook claw arranged at the inner end of the sleeve body and an expansion opening plate arranged on the movable end part, and the expansion opening plate is connected with the inner side of the hook claw in an elastic deformation mode.
The outer convex rib on the sleeve body is of a wedge structure, and the small end of the wedge structure is arranged towards the movable end part.
The hook claws are a group arranged along the circumferential direction of the outer edge of the inner end of the sleeve body, and the expansion plates are a group arranged corresponding to the hook claws.
The outer edge of the inner end of the sleeve body is provided with four inclined planes, the hook claws are hook plates which can be opened, and one hook plate is arranged corresponding to each inclined plane.
And one end of the hook plate facing the movable end part is bent inwards.
Compared with the prior art, the invention has the following advantages:
the fixing screw with reliable fixing has reasonable structural design, adopts the design of the hook claw, is in a closed state at ordinary times, and is in an open state when the screw enters in a rotating manner, thereby achieving the fixing effect, the contact area of the hook claw and a fixing substrate is large, deformation and looseness are avoided, and the fixing is reliable; and the dismounting is simple and convenient, the reuse can be realized, and the cost is reduced.
Drawings
The contents of the description and the references in the drawings are briefly described as follows:
fig. 1 is a schematic structural view of an expansion hook claw of the invention.
FIG. 2 is a schematic view of the state of the screw fixed outside the wall according to the present invention.
FIG. 3 is a schematic view of the state of the screw for fixing the plate material.
In the figure:
1. the novel wall comprises a sleeve body, 2 parts of end flanges, 3 parts of external convex ribs, 4 parts of the inner end part of the sleeve, 5 parts of movable end parts, 6 parts of threaded holes, 7 parts of hook claws, 8 parts of expansion plates, 9 parts of nuts, 10 parts of polished rod sections, 11 parts of threaded sections, 12 parts of a wall body and 13 parts of a plate.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, the fixed reliable fixed screw structure comprises a sleeve and a screw rod, wherein the sleeve comprises a sleeve body 1 and a movable end part 5, threaded holes matched with external threads on the screw rod are formed in the sleeve body and the movable end part, an expandable expansion hook claw is arranged between the sleeve body and the movable end part, the screw rod comprises a rod part and a nut 9, the rod part comprises a threaded section 11 and a polished rod section 10, and the polished rod section is arranged between the threaded section and the nut.
The sleeve body 1 is a hollow cylinder, and the outer end part of the sleeve body is provided with an end flange 2. The external diameter of the thread section of the screw rod is larger than the internal diameter of the sleeve body, and the thread section is matched with the threaded hole 6 in the movable end part 5.
Preferably, the sleeve body is a polyethylene plastic sleeve, the screw rod is a carbon steel threaded screw, the outer diameter of the threaded section of the screw rod is slightly larger than the inner diameter of the polyethylene plastic sleeve, and the two are conveniently matched with the sleeve to expand and be attached to the wall hole wall of the wall body.
The length of the thread section of the screw rod is larger than that of the polished rod section. Preferably, the ratio of the length of the threaded section on the lead screw to the total length of the lead screw is 0.6-0.75. Optimally, the screw thread occupies 2/3 of the screw length at the front end, and the rear end 1/3 is not threaded, so that the best use effect is achieved.
The sleeve body is provided with an external convex rib 3. Preferably, the outer convex rib on the sleeve body is of a wedge structure, and the small end of the wedge structure is arranged towards the movable end part.
Preferably, the two outer convex ribs 3 are symmetrically arranged, the two outer convex ribs are arranged oppositely, and the outer convex ribs are clamped in the wall hole, so that the fixing reliability is improved.
The expansion hook claw comprises a hook claw 7 arranged at the inner end of the sleeve body and an expansion opening plate 8 arranged on the movable end part, and the expansion opening plate is connected with the inner side of the hook claw in an elastic deformation mode. The sleeve overall structure is polyethylene plastics, colludes the splice bar between claw and the sleeve body inner, expands the thickness of opening the splice bar between board and the activity tip less, and relative motion between sleeve body and the activity tip can drive expand and open the board and collude the claw and open or reset.
The hook claw is a group arranged along the circumferential direction of the outer edge of the inner end of the sleeve body, and the expansion plate is a group arranged corresponding to the hook claw. Preferably, the outer edge of the end part 4 in the sleeve body is provided with four inclined planes, the hook claws are hook plates capable of being opened, one hook plate is arranged corresponding to each inclined plane, the contact area of the hook plates and the surface of the fixed substrate is large, the stress is uniform, the fixed substrate is not easy to deform, and the fixation is reliable. The hook plate is bent inwards towards one end of the movable end part, so that a fixing screw can be conveniently inserted into a wall hole.
According to the invention, the movable end part moves towards the sleeve body through the rotation of the screw thread, so that the polyethylene plastic four-corner hook claw is deformed and is in an open state, thereby achieving a fixing effect. The fixing not only in the single-sided wall body but also outside the single-sided wall body 12 and the composite fixing of various boards 13 can be used. The design of colluding the claw has effectually dispersed by the atress distribution of fixed material, has avoided the material stress point to take place deformation. And the utility model is convenient to be dismantled and can be used next time.
The above-mentioned features are merely for describing preferred embodiments of the present invention and may be arbitrarily combined to form a plurality of embodiments of the present invention.
The invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the inventive concept and solution, or to apply the inventive concept and solution directly to other applications without modification.
Claims (10)
1. The utility model provides a fixed reliable fixed screw structure, includes matched with sleeve and lead screw, its characterized in that: the sleeve includes sleeve body and activity tip, all be equipped with in sleeve body and the activity tip with the screw rod on the screw thread matched with screw hole, be equipped with the expansion claw that can open between sleeve body and the activity tip, the screw rod includes pole portion and nut, pole portion includes screw thread section and polished rod section, the polished rod section is established between screw thread section and nut.
2. The structure of the fixing screw of claim 1, wherein: the sleeve body is a hollow cylinder, and an end flange is arranged at the outer end part of the sleeve body.
3. The structure of the fixing screw of claim 1 or 2, wherein: the sleeve body is provided with an external convex rib.
4. The structure of the fixing screw of claim 1, wherein: the length of the thread section of the screw rod is larger than that of the polished rod section.
5. The structure of the fixing screw of claim 1, wherein: the external diameter of the thread section of the screw rod is larger than the internal diameter of the sleeve body, and the thread section is matched with the thread hole in the movable end part.
6. The structure of the fixing screw of claim 1, wherein: the expansion hook claw comprises a hook claw arranged at the inner end of the sleeve body and an expansion opening plate arranged on the movable end part, and the expansion opening plate is connected with the inner side of the hook claw in an elastic deformation mode.
7. The structure of claim 3, wherein: the outer convex rib on the sleeve body is of a wedge structure, and the small end of the wedge structure is arranged towards the movable end part.
8. The structure of claim 6, wherein: the hook claws are a group arranged along the circumferential direction of the outer edge of the inner end of the sleeve body, and the expansion plates are a group arranged corresponding to the hook claws.
9. The structure of claim 6, wherein: the outer edge of the inner end of the sleeve body is provided with four inclined planes, the hook claws are hook plates which can be opened, and one hook plate is arranged corresponding to each inclined plane.
10. The structure of the fixing screw for the secure fixing according to claim 9, wherein: and one end of the hook plate facing the movable end part is bent inwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911232681.3A CN110878790A (en) | 2019-12-05 | 2019-12-05 | Fixed reliable fixed screw structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911232681.3A CN110878790A (en) | 2019-12-05 | 2019-12-05 | Fixed reliable fixed screw structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110878790A true CN110878790A (en) | 2020-03-13 |
Family
ID=69730046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911232681.3A Pending CN110878790A (en) | 2019-12-05 | 2019-12-05 | Fixed reliable fixed screw structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110878790A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2289893Y (en) * | 1997-01-09 | 1998-09-02 | 赵正 | Plastic expanding plug |
| CN2475866Y (en) * | 2001-05-28 | 2002-02-06 | 于飞 | Expending plug for hollow wall body |
| CN102747959A (en) * | 2012-07-12 | 2012-10-24 | 赵群燕 | Method for fixing object and expansion bolt and special borer for method |
| US20190316621A1 (en) * | 2018-04-12 | 2019-10-17 | Stephen M. Hill | Pressure Lock Retention Fastener |
-
2019
- 2019-12-05 CN CN201911232681.3A patent/CN110878790A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2289893Y (en) * | 1997-01-09 | 1998-09-02 | 赵正 | Plastic expanding plug |
| CN2475866Y (en) * | 2001-05-28 | 2002-02-06 | 于飞 | Expending plug for hollow wall body |
| CN102747959A (en) * | 2012-07-12 | 2012-10-24 | 赵群燕 | Method for fixing object and expansion bolt and special borer for method |
| US20190316621A1 (en) * | 2018-04-12 | 2019-10-17 | Stephen M. Hill | Pressure Lock Retention Fastener |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200313 |