CN112377504B - Screw convenient to assemble and disassemble - Google Patents
Screw convenient to assemble and disassemble Download PDFInfo
- Publication number
- CN112377504B CN112377504B CN202010974117.5A CN202010974117A CN112377504B CN 112377504 B CN112377504 B CN 112377504B CN 202010974117 A CN202010974117 A CN 202010974117A CN 112377504 B CN112377504 B CN 112377504B
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- CN
- China
- Prior art keywords
- waist
- screw rod
- extension piece
- screw
- fixing ring
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- 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.)
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- 238000000034 method Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram 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
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
A screw convenient to assemble and disassemble comprises a screw extension piece and a fixing ring, wherein one end of the screw extension piece is in threaded connection with a common screw, the other end of the screw extension piece is provided with more than two waist-shaped grooves extending upwards along the end part, a plurality of waist-shaped grooves are uniformly distributed on the periphery of the screw extension piece in a surrounding manner, the side wall of each waist-shaped groove is processed with a group of inclined groove groups along the circumferential direction, each group of inclined groove groups comprises more than one inclined groove which is uniformly distributed, one end of each inclined groove is communicated with the corresponding waist-shaped groove, the other end of each inclined groove is inclined towards the non-threaded end of the screw extension piece, and the inclination angle between each inclined groove and each waist-shaped groove is 10-45 degrees; a central through hole matched with the outer diameter of the screw rod extension piece is formed in the fixing ring, and two protruding keys corresponding to the two waist-shaped grooves are symmetrically protruded on the inner wall of the fixing ring in the direction facing the central axis; the fixing ring is sleeved at the waist-shaped groove end of the screw rod extension piece and is clamped in the two inclined grooves at the same height through the two convex keys; time saving, reduction of labor cost, wide application range and firm and reliable installation.
Description
Technical Field
The invention relates to the technical field of industrial assembly, in particular to a screw convenient to assemble and disassemble.
Background
In an industrial assembly process, a nut and a screw are usually screwed together to fix an object. The screw rod has certain length to the outer wall is provided with the external screw thread, and the nut is the cavity annular dress and the inner wall is provided with the internal thread that corresponds with the external screw thread of screw rod, nut and screw rod threaded connection. In the assembling process, the longer screw rod leads to longer travel distance of the nut on the screw rod, the number of rotating turns is large, the assembling time is long, and time and labor are wasted.
A quick fastening device is disclosed in the prior art. Two grooves are oppositely formed in two sides of a bolt of the device, the inner teeth of the nut are in two convex parts, and the convex parts are matched with the grooves. The internal teeth of the nut are aligned with the groove of the bolt, the nut can be directly moved to any position on the bolt without rotating the nut, the nut is screwed, and a specially-made anti-loosening gasket is sleeved at the gap between the nut and the bolt. When the device is used, the nut does not need to be repeatedly rotated, moves on the bolt, moves to a required position and then is screwed. In the scheme, however, the protruding part of the nut moves in the groove of the bolt and rotates to enter the body part of the bolt without the groove for fastening connection, and the connection area in the circumferential direction is small, so that the connection reliability is poor; and there is the space between nut and the bolt, even the cover is established locking gasket and also can appear circumference not hard up and lead to connecting insecure problem.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the screw convenient to assemble and disassemble, which saves time, reduces labor cost, and has wide application range and firm and reliable installation.
The technical scheme adopted by the invention is as follows: a portable loading and unloading screw comprising:
the screw rod extension piece, one end of the screw rod extension piece is connected with a common screw rod in a threaded manner, the other end of the screw rod extension piece is provided with more than two waist-shaped grooves extending upwards along the end part, the waist-shaped grooves are distributed on the periphery of the screw rod extension piece in a surrounding manner, each waist-shaped groove is in a long strip shape, the side wall of each waist-shaped groove is processed with a group of inclined groove groups along the circumferential direction, each group of inclined groove groups comprises more than one inclined groove which is uniformly distributed, one end of each inclined groove is communicated with the waist-shaped groove, the other end of each inclined groove is inclined towards the non-threaded end of the screw rod extension piece, the inclination angle between each inclined groove and the waist-shaped groove is 10-45 degrees, and the circumferential length of each inclined groove is not more than one third of the circumference of the screw rod extension piece;
the inner wall of the fixing ring is symmetrically provided with two protruding keys corresponding to the two waist-shaped grooves in a protruding mode facing the direction of the central axis; the fixing ring is sleeved at the waist-shaped groove end of the screw rod extension piece and is clamped in the two inclined grooves at the same height through the two convex keys.
The screw rod extension piece is characterized in that a counter bore is formed in the center of one end of the screw rod extension piece, the depth of the counter bore is smaller than the distance from the upper end face of the screw rod extension piece to the upper end portion of the waist-shaped groove and is larger than or equal to 10mm, and an inner thread matched with a common screw rod is formed in the inner wall of the counter bore.
The other end of the screw rod extension piece is provided with two waist-shaped grooves extending upwards along the end part, and the two waist-shaped grooves are symmetrical about the central axis of the screw rod extension piece.
The width of the waist-shaped groove along the circumferential direction is consistent with that of the protruding key in the fixed ring, and the depth of the waist-shaped groove from the outer wall to the axis direction is not more than one fifth of the diameter of the screw rod extension piece.
The depth of the waist-shaped groove is 2mm from the outer wall surface to the axis direction; the depth and the width of each inclined groove are the same as those of the waist-shaped groove.
The cross section of the fixing ring is polygonal/circular/elliptical/kidney-shaped/other shapes.
The cross section of the fixing ring is regular hexagon, and the two protruding keys are located at the central positions of the two sides of the fixing ring and symmetrically distributed.
The fixing ring is provided with a mounting hole for mounting the protruding key, and the protruding key is in interference fit with the mounting hole or is in assembly connection in a welding mode.
The convex keys are in a circular or elliptical or rectangular or kidney-shaped cylinder structure.
The invention has the beneficial effects that:
1. during the installation and disassembly processes, the assembly can be quickly realized only by enabling the rotation length of the common screw to exceed the axial height corresponding to the included angle between the inclined groove and the non-threaded end face, the assembly process can be realized only by rotating the whole screw length, the hollow stroke problem of the disassembly of the threaded part is greatly reduced, the problem of the indirect disassembly of the threads of the light-load normally-disassembled part is solved, the time is saved, and the labor cost is reduced;
2. the arrangement of the plurality of inclined grooves ensures that the relative position of the fixing ring and the screw rod extension piece, namely the initial position, can be adjusted by selecting different inclined grooves, so that the installation and fixation can be realized by rotating the common screw rod by a short stroke;
3. the fixing ring rotates to enter the inclined groove to be adjusted with the screw rod extension piece in a stepped mode, the common screw rod and the screw rod extension piece are matched to be adjusted in a stepless fastening mode, the to-be-installed piece of any size can be fixed, the application range is wide, and the installation is firm and reliable.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side view of the screw extension of the present invention;
FIG. 3 is a top view of the screw extension of the present invention;
FIG. 4 is a schematic view of a screw extension of the present invention;
FIG. 5 shows a first embodiment of a retaining ring of the present invention;
FIG. 6 is a front view of a retaining ring according to a first embodiment of the present invention;
FIG. 7 is a schematic diagram of the present invention in use.
Detailed Description
In fig. 1, the invention comprises a common screw 1, a screw extension 2 and a fixing ring 3 matched with the screw extension, wherein the screw extension 2 is rod-shaped, one end of the screw extension 2 is connected with the common screw, and the other end of the screw extension is sleeved by the fixing ring.
In fig. 2, 3 and 4, a counter bore is arranged at the center of the screw rod extension piece 2, the depth of the counter bore is less than the distance from the upper end face of the screw rod extension piece 2 to the upper end part of the waist-shaped groove 2-1 and is more than or equal to 10mm, and the inner wall of the counter bore is provided with an internal thread matched with the common screw rod 1 and is in threaded connection with the common screw rod 1; the other end of the screw rod extension piece 2 is provided with two axially symmetrical waist-shaped grooves 2-1 which extend upwards for a certain length along the end part, the waist-shaped grooves 2-1 are in a strip shape, the width of the waist-shaped grooves 2-1 of the waist-shaped grooves along the circumferential direction is consistent with that of the protruding keys 3-1 in the fixing ring 3, the depth of the waist-shaped grooves 2-1 from the outer wall to the axial direction is not more than one fifth of the diameter of the screw rod extension piece 2, the width of the waist-shaped grooves along the circumferential direction can be 2mm, and the depth of the waist-shaped grooves from the outer wall to the axial direction can be 2 mm; a group of inclined groove groups are processed on the side wall of each waist-shaped groove 2-1 along the circumferential direction, each group of inclined groove groups comprises more than one inclined groove 2-2 which is uniformly distributed, the depth width of each inclined groove is the same as that of each waist-shaped groove 2-1, one end of each inclined groove 2-2 is communicated with each waist-shaped groove 2-1, the other end of each inclined groove 2-2 inclines towards the non-threaded end of each screw rod extension piece 2, the inclination angle between each inclined groove 2-2 and each waist-shaped groove 2-1 is 10-45 degrees, and the circumferential length of each inclined groove 2-2 is not more than one third of the circumferential length of each screw rod extension piece 2; the inclination angle can be 10 degrees, the inclined grooves are distributed in a stepped manner, the number of the 2-2 inclined grooves is related to the general degree of the product, generally is 1-3, and the number of the inclined grooves can be increased according to the situation.
The upper end of the screw rod extension piece 2 can also replace the common screw rod 1 by a nut, and the upper end of the screw rod extension piece 2 is provided with an external thread matched with the nut.
The number of the waist-shaped grooves 2-1 is selected according to the diameter of the screw extension piece 2: when the diameter is less than or equal to 20mm, two waist-shaped grooves 2-1 are selected; when the diameter is more than 20mm, the waist-shaped grooves which are symmetrically distributed can be properly added.
In fig. 5 and 6, the inner diameter of the fixing ring 3 is the same as the outer diameter of the screw extension 2 to ensure that the fixing ring can be sleeved on the screw extension 2, the inner wall of the fixing ring 3 protrudes toward the central axis direction to form a protruding key 3-1, the fixing ring 3 is provided with a mounting hole for mounting the protruding key 3-1, the protruding key 3-1 is assembled and connected with the mounting hole in an interference fit manner or a welding manner, the protruding key is generally set to be a protruding point-like and circular cylinder structure, but a non-point-like structure can be set for increasing the strength, and the protruding key is an elliptical, rectangular or kidney-shaped cylinder structure; the fixing ring 3 is polygonal/circular/elliptical/kidney-shaped/other shapes in cross section, further, the fixing ring 3 is regular hexagonal in cross section, and the two protruding keys 3-1 are located at the center positions of the two sides of the fixing ring 3 and symmetrically distributed.
In fig. 7, during installation, a common screw 1 is firstly screwed into a screw extension 2 by a proper length, then a fixing ring 3 is sleeved into the screw extension 2, a proper inclined groove 2-2 which is longitudinally arranged is selected, the fixing ring 3 is rotated to enable a protruding key 3-1 to enter the inclined groove 2-2, in the process, the inclined groove 2-2 inclines towards the non-threaded end of the screw extension 2, so that the fixing ring 3 moves downwards or the screw extension 2 moves upwards to cause the installation to be not fastened, and finally, the fastening and the fixation can be completed by screwing the common screw 1.
In the disassembly process, the disassembly can be completed by rotating the fixing ring 3 only by rotating the common screw rod 1 to a length which exceeds the axial height corresponding to the included angle between the inclined groove 2-2 and the non-threaded end face.
Claims (9)
1. The utility model provides a just, load and unload screw rod which characterized in that: the method comprises the following steps:
the screw rod extension piece (2), one end of the screw rod extension piece (2) is in threaded connection with a common screw rod (1), the other end of the screw rod extension piece is provided with more than two waist-shaped grooves (2-1) extending upwards along the end part, the waist-shaped grooves (2-1) are distributed on the periphery of the screw rod extension piece (2) in an encircling manner, each waist-shaped groove (2-1) is in a long strip shape, the side wall of each waist-shaped groove (2-1) is processed with a group of inclined groove groups along the circumferential direction, each group of inclined groove groups comprises more than one inclined groove (2-2) distributed uniformly, one end of each inclined groove (2-2) is communicated with the corresponding waist-shaped groove (2-1), the other end of each inclined groove is inclined towards the non-threaded end of the screw rod extension piece (2), the inclination angle between each inclined groove (2-2) and the corresponding waist-shaped groove (2-1) is 10-45 degrees, and the circumferential length of each inclined groove (2-2) is not more than one third of the circumference of the screw rod extension piece (2);
the screw rod extension piece (2) is provided with a screw rod, the inner wall of the fixing ring (3) is provided with a central through hole matched with the outer diameter of the screw rod extension piece (3), and the inner wall of the fixing ring (3) is symmetrically provided with two protruding keys (3-1) corresponding to the two waist-shaped grooves (2-1) in a protruding mode in the direction facing the central axis; the fixing ring (3) is sleeved at the waist-shaped groove (2-1) end of the screw rod extension piece (2) and is clamped in the two inclined grooves (2-2) at the same height through the two protruding keys (3-1).
2. A screw easy to mount and dismount as claimed in claim 1, wherein: the screw rod extension piece (2) is characterized in that a counter bore is arranged at the center of one end of the screw rod extension piece (2), the depth of the counter bore is smaller than the distance from the upper end face of the screw rod extension piece (2) to the upper end part of the waist-shaped groove (2-1) and is larger than or equal to 10mm, and an internal thread matched with the common screw rod (1) is arranged on the inner wall of the counter bore.
3. A screw easy to mount and dismount as claimed in claim 1, wherein: the other end of the screw rod extension piece (2) is provided with two waist-shaped grooves (2-1) which extend upwards along the end part, and the two waist-shaped grooves (2-1) are symmetrical about the central axis of the screw rod extension piece (2).
4. A screw for easy loading and unloading according to claim 3, wherein: the width of the waist-shaped groove (2-1) along the circumferential direction is consistent with that of the protruding key (3-1) in the fixing ring (3), and the depth of the waist-shaped groove (2-1) from the outer wall to the axis direction is not more than one fifth of the diameter of the screw rod extension piece (2).
5. A screw easy to mount and dismount according to claim 4, wherein: the waist-shaped groove (2-1) is formed in the axial direction from the outer wall surface to the depth of 2 mm; the depth and the width of each inclined groove (2-2) are the same as those of the waist-shaped groove (2-1).
6. A screw easy to mount and dismount as claimed in claim 1, wherein: the cross section of the fixing ring (3) is polygonal/circular/elliptical.
7. A screw easy to mount and dismount according to claim 6, wherein: the cross section of the fixing ring (3) is a regular hexagon, and the two protruding keys (3-1) are located at the central positions of the two sides of the fixing ring (3) and are symmetrically distributed.
8. A screw easy to mount and dismount as claimed in claim 1, wherein: the fixing ring (3) is provided with a mounting hole for mounting the protruding key (3-1), and the protruding key (3-1) is in interference fit with the mounting hole or is assembled and connected in a welding mode.
9. A screw easy to mount and dismount as claimed in claim 8, wherein: the convex key (3-1) is in a circular or elliptical or rectangular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010974117.5A CN112377504B (en) | 2020-09-16 | 2020-09-16 | Screw convenient to assemble and disassemble |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010974117.5A CN112377504B (en) | 2020-09-16 | 2020-09-16 | Screw convenient to assemble and disassemble |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112377504A CN112377504A (en) | 2021-02-19 |
| CN112377504B true CN112377504B (en) | 2022-02-22 |
Family
ID=74586516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010974117.5A Active CN112377504B (en) | 2020-09-16 | 2020-09-16 | Screw convenient to assemble and disassemble |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112377504B (en) |
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| FR2648497A1 (en) * | 1989-06-15 | 1990-12-21 | Ogitec Conseil | Modular panel element for the construction, by assembly, of prefabricated premises, in particular for sanitation installations |
| US8708630B1 (en) * | 2007-04-04 | 2014-04-29 | David A. W. Curtis | Fastener apparatus with self-leveling head |
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| Publication number | Publication date |
|---|---|
| CN112377504A (en) | 2021-02-19 |
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