CN117480302A - Expansion sleeve, foundation bolt and complete anchor bolt - Google Patents
Expansion sleeve, foundation bolt and complete anchor bolt Download PDFInfo
- Publication number
- CN117480302A CN117480302A CN202280042279.2A CN202280042279A CN117480302A CN 117480302 A CN117480302 A CN 117480302A CN 202280042279 A CN202280042279 A CN 202280042279A CN 117480302 A CN117480302 A CN 117480302A
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- Prior art keywords
- mounting hole
- expansion sleeve
- nut
- sleeve
- wall
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- Pending
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- 239000004567 concrete Substances 0.000 claims abstract description 32
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 9
- 230000035939 shock Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Dowels (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention provides an expansion sleeve, an anchor bolt and a complete set of anchor bolts, wherein the expansion sleeve does not need to use a tubular tool, concave convex blocks are formed on the inner wall to surround the anchor bolt, the expansion sleeve is expanded to the side of a concrete structure through a pressurizing head of the anchor bolt, and the expansion sleeve is fixed by penetrating into the side surface of an application hole of a concrete structure through external force or tightening nuts. The expansion sleeve is provided with an inner wall and an outer wall which have a length and an outer diameter corresponding to the depth and the diameter of a mounting hole perforated in a concrete structure, a concave convex block is formed on the inner wall along the length direction of the anchor bolt to encase the anchor bolt, the expansion sleeve is expanded to the side of the concrete structure by a pressurizing head of the anchor bolt, and the expansion sleeve is fixed by an external force or tightening of a nut, and penetrates into the side surface of the mounting hole.
Description
Technical Field
The present invention relates to anchors, and more particularly to an expansion sleeve, an anchor bolt, and a complete set of anchors for securing a fixture to concrete or reinforced concrete.
Background
The set of anchors is typically comprised of bolts, bushings, flat washers, spring washers, and nuts.
The complete set of anchor bolts are formed by inserting the sleeve of the fastening bolt into the hole after the wall or the bottom is perforated, and then using a drilling machine to strike the sleeve for construction, and then the end part of the sleeve is opened in the hole after being struck, so that the sleeve has shock resistance (bearing capacity).
Here, the bolts are constructed to be exposed from the wall or the bottom by a certain length in consideration of the thickness of the fixture.
Then, the fixture is arranged such that the exposed bolt penetrates through its own through hole, and the nut is coupled to the end of the bolt, thereby completing the construction of the anchor bolt set.
Typically, at the job site, a set of anchors are typically used at multiple locations to install a fixture. Thus, the length of the bolts of the set of anchors exposed from the wall or bottom should be constant at the time of construction.
However, the existing complete anchor bolts are difficult to achieve uniformity in the exposed length of the bolts during construction due to the fact that the thickness of a fixed object is considered. Therefore, the existing complete anchor bolt has the defects of low construction efficiency and incapability of exquisite construction.
In addition, the existing complete anchor bolt is different in shape left at each position on the fixed object after the fixed object is fixed because the exposed bolt is uneven in length. Therefore, the aesthetic feeling exposed after construction is poor.
In addition, the conventional anchor bolts have difficulty in that the hole is widened due to vibration or the like, and when the fastened state is loosened, the construction is required again.
And the existing complete anchor bolt has the structure that the anchor bolt is combined with the lower part of the hole along with the expansion of the sleeve. Thus, as described above, the existing anchor bolts are only dependent on the expansion of the pipe to provide shock resistance, and thus do not provide sufficient shock resistance to the fixture.
As described above, the conventional anchor bolt set is shown in FIG. 8, and comprises: a bolt shank 110 having a threaded portion and forming an expanded tapered portion at an end portion; the piston 120 has a cut-out portion 121 formed in a part of its main body, is clamped into the bolt shaft 110, and is further expanded in diameter by a tapered portion expanded at an end of the bolt shaft 110 at the time of striking.
The method of construction of the anchor bolt set is as follows.
First, the bolt shaft 110 is inserted into the piston 120, and the bolt shaft 110 inserted into the piston 120 is inserted into the anchor hole. After the bolt shaft 110 is inserted, a tubular tool is used to contact the outer end of the piston 120 and then the tool is struck. In doing so, after the piston 120 is inserted into the inside, the cut-out portion of the piston 120 is cut out by the tapered portion 120 of the bolt shaft 110, and thus the diameter is expanded, and the expanded piston 120 is fixed in the anchor hole, and accordingly the bolt shaft 110 is also fixed in the anchor hole together with the piston 120.
In this way, after the bolt shank 110 is fixed to the structure, a bracket or the like is fixed to the screw portion of the bolt shank 110, and various objects to be attached are fixed.
When the anchor set as described above is fixed to the structure, the tubular tool is used to strike the tool after contacting the outer end of the piston 120, and the inner end of the piston 120 is fixed to the anchor hole by opening the tapered portion of the bolt shaft 110, but the inner end of the piston 120 is fixed to the anchor hole, so that the fixing force is weak, and therefore, there is a problem that another tubular tool is required.
[ Prior Art literature ]
[ patent literature ]
(patent document 0001) patent registration numbers 10 to 2061601 { registration date: 2019, 12, 26 })
Disclosure of Invention
Technical problem
The invention aims to provide an expansion sleeve, which does not need to use a tubular tool, forms concave convex blocks on the inner wall to surround foundation bolts, expands towards the side of a concrete structure through a pressurizing head of the foundation bolts, and is fixed by external force or screwing nuts into the side surface of an application hole of a concrete structure.
Another object of the present invention is to provide an anchor bolt having a threaded portion, fastened by tightening a nut, surrounded by a concave-convex block formed on an inner wall of an expansion sleeve having a length and an outer diameter corresponding to a depth and a diameter of a hole bored in a concrete structure, and pressed by a pressing head to expand the expansion sleeve and to be fixed by pressing the expansion sleeve by an external force or tightening the nut.
Still another object of the present invention is to provide a set anchor bolt, which is provided with a threaded portion, is fastened by tightening a nut, is surrounded by a concave-convex block formed on an inner wall of an expansion sleeve having a length and an outer diameter corresponding to a depth and a diameter of a mounting hole bored in a concrete structure, and is fastened to a foundation or the concrete structure by an external force or by tightening the nut, is expanded by pressing the expansion sleeve by a pressing head, and is fixed by being pressed into a side surface of the mounting hole.
Technical proposal
In the present invention, preferably, the expansion sleeve has an inner wall and an outer wall having a length and an outer diameter corresponding to a depth and a diameter of a mounting hole bored in the concrete structure, a concave projection is formed on the inner wall along a longitudinal direction of the anchor bolt, the anchor bolt is covered, the expansion sleeve is expanded toward the concrete structure by a pressurizing head of the anchor bolt, and the expansion sleeve is fixed by an external force or tightening of a nut, and the expansion sleeve is inserted into a side surface of the mounting hole.
Preferably, the outer diameter of the inner wall is 12mm to 14mm, the concave-convex thickness is 25mm to 30mm, the outer wall is tightly fixed on the mounting hole, a stepped portion and a front end expanding slot are respectively formed on the upper end and the lower end of the inner wall, and a middle expanding slot is formed between the stepped portion and the front end expanding slot.
Preferably, the anchor bolt is fastened by tightening and fastening a nut by a screw portion formed on the upper side thereof, and is covered by a concave-convex block formed on the inner wall of an expansion sleeve having a length corresponding to the depth and diameter of a mounting hole perforated in the concrete structure, and when an external force or tightening of the nut is applied, the expansion sleeve is pressed by a pressing head to expand and then is driven into the side surface of the mounting hole to be fixed.
Preferably, the striking part, which is struck by the striking tool at the upper end, is formed at the screw part, and the pressing head is provided with an upward inclined protrusion, which protrudes obliquely upward from the outer surface while maintaining a space between the front end expansion grooves of the expansion sleeve, and a downward inclined protrusion, which protrudes obliquely downward from one end of the upward inclined protrusion, and further, in order to recess the shape of the space, the lower end of the expansion sleeve is pressed to expand while the front end reaches the lower end of the mounting hole, and the pressing protrusion is vertically extended from the pressing head side, is formed to incline upward from the screw part side so as to have the same outer diameter as the outer diameter of the pressing head between the screw part and the pressing head, and is closely inserted into the middle expansion groove, and is pressed to expand by the expansion sleeve when moved toward the mounting hole direction of the pressing head by the outer force, and then is caught by the inclined surface of the middle expansion groove when the nut is tightened, thereby preventing the pressing protrusion from being separated upward from the middle expansion groove.
Preferably, the anchor set of the present invention comprises: an expansion sleeve having an inner wall and an outer wall having a length and an outer diameter corresponding to the depth and the diameter of a mounting hole bored in a concrete structure, the inner wall being formed with a concave-convex block along the longitudinal direction of an anchor bolt, the inner wall being wrapped with the anchor bolt, and being further expanded toward the concrete structure, and being fixed by being inserted into the side surface of the mounting hole by external force or tightening of a nut; the foundation bolt is provided with a threaded part on the upper side, is screwed and fastened by a nut, is wrapped by the concave-convex block, and is pressed by a pressing head to expand when external force is applied or the nut is screwed, so that the foundation bolt is fixed on the side surface of the mounting hole;
advantageous effects
The invention has the advantages that concave convex blocks are formed on the inner diameter of the outer diameter of 13mm along the length direction of the foundation bolt to surround the foundation bolt, the foundation bolt is further unfolded through the pressurizing head of the foundation bolt, the foundation bolt is led out when the nut is hit or screwed by a hit tool such as a hammer, the foundation bolt is firmly fixed in a deeper part along with the short movement expansion of the foundation bolt, the inner and outer parts of the expansion sleeve are consistent with the part of the end of the hit outer side or enter the inner side, when the foundation bolt is screwed by the nut, the bolt is led up by contacting with a gasket on the outer side of the expansion sleeve, and then the bolt is expanded and fixed in a deeper part due to the short movement distance of the head inclined surface of the foundation bolt and led out by the head inclined surface of the foundation bolt.
The compression head of the foundation bolt, the side wall of the expansion sleeve and the inner wall of the mounting hole are tightly attached in a compressed state, so that the foundation bolt is fixed in the hole;
since the expanded sleeve structure corresponding to the sectional shape of the mounting hole of the structure reduces the interval between the mounting hole and the expanded sleeve, the shaking or vibration of the expanded sleeve is suppressed, and thus the expanded sleeve can be mounted more stably, firmly and precisely.
Drawings
FIG. 1 is a cross-sectional view showing the set of anchors of the present invention;
FIG. 2 is a cross-sectional view showing the dimensions of the various portions of the anchor set illustrated in FIG. 1;
FIG. 3 is an exploded perspective view of the deployment sleeve illustrated in FIG. 1;
FIG. 4 is a cross-sectional view of the bolt illustrated in FIG. 1;
fig. 5 is a sectional view showing a state in which the anchor set illustrated in fig. 1 is inserted into a concrete structure;
fig. 6 is a sectional view of the assembled state after being tightened by a nut in the state of fig. 5;
FIG. 7 is a sectional view of the installed state after being struck with a hammer of FIG. 5;
fig. 8 is a sectional view of the assembled state after being tightened with a nut in the state of fig. 7;
fig. 9 is a schematic view showing a prior art anchor set.
Description of the main symbols in the drawings
10: a concrete structure; 20: a mounting hole;
50: spacing (space); 70: a hammer;
100: expanding the sleeve; 200: an inner wall;
205: concave convex blocks; 210: the front end is provided with a slot;
212: a downward inclined surface; 214: an upward inclined surface;
216: a straight line surface; 218: space of
220: a difference-break part; 230: a middle expanding slot;
232: an inclined surface; 240: a thread;
500: an outer wall; 600: a foot anchor bolt;
700: a pressurizing head; 710: a projection inclined upward;
720: a downwardly sloping projection; 800: a pressurizing protrusion;
900: a threaded portion; 950: a striking part;
1000: a nut; 1100: a flat gasket;
120: a spring washer.
Best mode for carrying out the invention
Preferably, the expansion sleeve, the anchor bolt and the set bolt according to the present invention are formed with a screw portion formed on an upper side thereof, screwed and fastened by a nut, and wrapped by a concave-convex block formed on an inner wall of the expansion sleeve having a length and an outer diameter corresponding to a depth and a diameter of a mounting hole bored in a concrete structure, when an external force or the nut is screwed, the expansion sleeve is expanded by pressing a head, and then fixed to a side surface of the mounting hole, a striking portion struck by a striking tool on an upper end thereof is formed on the screw portion, and the pressing head is inserted while maintaining a space between a front end expansion groove of the expansion sleeve, an upward inclined protrusion having an outer surface inclined to protrude upward, and a downward inclined protrusion protruding downward from an end of the upward inclined protrusion, and further, in order to recess a shape of the space, the front end reaches a lower end of the mounting hole while pressing the expansion sleeve, and the pressing protrusion is vertically extended from the pressing head side, and is inclined upward from the screw portion side to be formed so as to be pressed between the screw portion and the pressing head and the expansion sleeve, and then is fitted to the middle groove by pressing the expansion head, and then is prevented from being moved by the expansion protrusion, and thus the pressing head is moved from the expansion groove, and the expansion sleeve is also pressed.
Detailed Description
The following describes in detail the close-fitting anchor set according to the embodiment of the invention with reference to the drawings.
Fig. 1 is a sectional view showing a set anchor of the present invention, fig. 2 is a sectional view showing dimensions of various portions of the set anchor illustrated in fig. 1, fig. 3 is an exploded perspective view of an expansion sleeve illustrated in fig. 1, and fig. 4 is a sectional view of a bolt illustrated in fig. 1.
The snug-fitting anchor of the present embodiment includes an expanding sleeve 100 and an anchor bolt 600.
The expansion sleeve 100 includes an inner wall 200 and an outer wall 500 having a length and an outer diameter (13 mm) corresponding to (matching) the depth and diameter of the mounting hole 20 bored in the concrete structure 10, and an uneven block 205 having a thickness of 2.75mm is formed on the inner wall 200 along the longitudinal direction of the anchor bolt 600, and the anchor bolt 600 is wrapped around the anchor bolt 600, expanded toward the concrete structure 10 side by the pressing head 700 of the anchor bolt 600, and fastened by external force or tightening of a nut, and is inserted into the side surface of the mounting hole 20.
The outer wall 500 is tightly fixed to the mounting hole 20, a step portion 220 and a front-end expansion slot 210 are respectively formed on the upper end and the lower end of the inner wall 200, and a middle expansion slot 230 is formed between the step portion 220 and the front-end expansion slot 210.
The anchor bolt 600 is formed with a screw portion 900 formed on the upper side, is tightened and fastened by a nut 1000, is covered by a 2.5 to 3.0mm thick concave-convex block 205 formed on the inner wall 200 of the expansion sleeve 100 having a length and an outer diameter (13 mm) corresponding to the depth and the diameter of the installation hole 20 perforated in the concrete structure 10, is pressurized by a pressurizing head 700 when an external force or the nut is fastened, is expanded, and is then fastened by being driven into the side surface of the installation hole 20.
The striking part 950, which is struck by the striking tool 70 on the upper end, is formed at the screw part 800, and is provided with the pressurizing head 700 to be inserted while maintaining the space 218 between the front-end expanding grooves 210 of the expanding sleeve 100, the upward-inclined protrusions 770, which are protruded with the outer surface inclined upward by an angle of 110 ° to 120 °, and the downward-inclined protrusions 720, which are protruded with the downward inclination by an angle of 110 ° to 120 ° from one end of the upward-inclined protrusions 710, so that the shape of the space 218 is depressed, i.e., the lower end of the expanding sleeve 100 is pressurized to expand, changing the groove shape of the front-end expanding groove 210 from diamond shape to a state corresponding to the upward-and downward-inclined protrusions 710, 720 of the pressurizing head 700, and thus the front end reaches the lower end 30 of the mounting hole 20.
The pressing protrusion 800 is vertically extended from the pressing head 700 side, is formed to be inclined upward from the screw portion 900 side, is formed to have the same outer diameter as the outer diameter of the pressing head 700 between the screw portion 900 and the pressing head 700, is closely inserted into the middle expansion groove 300, is pressed by the external force to expand the expansion sleeve 100 when moving toward the mounting hole 20 of the pressing head 700, and is caught by the inclined surface 232 of the middle expansion groove 230 when tightening the nut, thereby preventing upward detachment from the middle expansion groove 230 of the pressing protrusion 800.
The operation of applying the anchor set of the present invention to a concrete structure will be described below with reference to fig. 5.
Fig. 5 is a sectional view showing a state in which the anchor set illustrated in fig. 1 is inserted into a concrete structure.
Fig. 6 is a sectional view of the state of fig. 5 in an installed state after being tightened by a nut.
Referring to fig. 5, in order to fix the object to be fixed to the concrete structure 10, a drill (not shown) having a width of 1 to 2mm larger than the anchor bolt is used to pierce the mounting hole 20 in the concrete structure 10.
In a state where the pressing head 700 and the pressing protrusion 800 of the bolt 600 are inserted into the front end expansion groove portion 210 and the middle expansion groove 230 of the expansion sleeve 100, respectively, the bolt 600 is inserted until the lower end of the expansion sleeve 100 reaches the lower end of the mounting hole 20, and a space (interval) 50 is formed between the concrete structure 10, the front end of the bolt 100, and the inner wall of the expansion sleeve 100.
According to fig. 6, when the nut is tightened, the expansion sleeve 100 is pressed by the pressing head 700 to expand and then is fixed to the side surface of the mounting hole 20, and when the bolt 100 is pulled up, the movement distance by the upward inclined protrusions 710 and the downward inclined protrusions 720 of the pressing head 700 is short and further expanded and fixed deep, thereby preventing detachment.
Fig. 7 is a sectional view of the installed state of fig. 5 after being struck by a hammer.
In order to fix the object to be fixed to the concrete structure 10, a drill (not shown) is used to pierce the mounting hole 20 in the concrete structure 10.
While the pressing head 700 and the pressing protrusion 800 of the bolt 600 are inserted into the front end expansion groove portion 210 and the middle expansion groove 230 of the expansion sleeve 100, respectively, the pressing protrusion presses the middle portion (downward) of the expansion sleeve 100 by an external force (striking) to expand the middle portion of the inner wall 200 of the expansion sleeve 100 (to be tightly fixed in a manner of increasing the coupling force between the bolt 600, the expansion sleeve 100 and the concrete structure 100), and simultaneously, to concave the shape of the space 218 of the pressing head 700, the lower end of the expansion sleeve 100 is pressed to expand, changing the groove shape of the front end expansion groove portion 210 from a diamond shape to a state corresponding to the upward and downward inclined protrusions 710, 720 of the pressing head 700, thereby allowing the front end to reach the lower end of the mounting hole 20.
Fig. 8 is a sectional view of the assembled state after the state of fig. 7 is tightened by a nut.
According to fig. 8, after the flat washer and the spring washer 1100 are assembled to the screw portion 900 of the bolt 600, when the nut 1200 is tightened, a repulsive force (friction force) acts along the downward inclined surface 212 of the front end expansion groove portion 210 in accordance with the disengagement of the pressing head 700 from the front end expansion groove 210 of the expansion sleeve 100, so that the upward inclined protrusion 710 of the pressing head 700 is caught by the straight surface 216 and the downward inclined surface 212 of the front end expansion groove 210, and a repulsive force acts along the inclined surface 232 of the middle expansion groove 230 in accordance with the disengagement of the pressing protrusion 800 from the middle expansion groove 230, so that the pressing protrusion 800 is caught by the inclined surface of the middle expansion groove 230, thereby preventing the disengagement of the bolt 600 from the expansion sleeve 100.
The above embodiments and the accompanying drawings are only for illustrating the technical aspects of the present invention, and are not to be construed as limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art may make modifications, alterations and equivalents to the technical solutions described in the foregoing embodiments, and these modifications, alterations and equivalents may be substituted without departing the essence of the corresponding technical solutions from the scope of the technical solutions described in the embodiments of the present invention. The scope of the invention should therefore not be limited to the described embodiments, but should be construed to include not only the scope of the claims set forth below, but also equivalents of the scope of the claims.
Industrial application
As described above, the expansion sleeve, the anchor bolt, and the anchor bolt set according to the present invention are provided, and the expansion sleeve structure corresponding to the sectional shape of the mounting hole of the structure minimizes the generation of the space between the mounting hole and the expansion sleeve, so that the expansion sleeve is prevented from shaking or vibrating, and the mounting is more stable, firm, precise, and therefore, the invention is extremely applicable to industry.
Claims (2)
1. An anchor bolt is characterized in that,
a screw part is formed on the upper side, is screwed and fastened by a nut, is wrapped by concave-convex blocks formed on the inner wall of an expansion sleeve with the length and the outer diameter corresponding to the depth and the diameter of a perforated mounting hole on a concrete structure, and is pressed by a head to expand and then is fixed on the side surface of the mounting hole when external force or the nut is screwed;
a striking part, which is struck by a striking tool on an upper end, is formed at a screw part, the pressurizing head is inserted while maintaining a space between the front-end expanding grooves of the expanding sleeve, an upward-inclined protrusion, which protrudes upward from an outer surface thereof, and a downward-inclined protrusion, which protrudes downward from one end of the upward-inclined protrusion, so that, in order to recess a shape of the space, a lower end of the expanding sleeve is pressurized to expand while the front end reaches a lower end of the mounting hole;
a pressing projection extending vertically from the pressing head side so as to have the same outer diameter as the outer diameter of the pressing head between the screw portion and the pressing head, formed obliquely upward toward the screw portion side, and inserted in the intermediate expansion groove so as to be closely contacted therewith, and when moved toward the mounting hole of the pressing head by the external force, the expansion sleeve is pressed to expand;
then, when the nut is tightened, the pressing projection is caught by the inclined surface of the intermediate expansion groove, thereby preventing the pressing projection from being separated upward from the intermediate expansion groove.
2. A complete set of anchor bolts is characterized in that,
comprising the following steps: an expansion sleeve having an inner wall and an outer wall having a length and an outer diameter corresponding to the depth and diameter of a mounting hole bored in a concrete structure, wherein a concave-convex block is formed on the inner wall along the longitudinal direction of an anchor bolt, and the expansion sleeve is further expanded toward the concrete structure side and is fixed by being inserted into the side surface of the mounting hole by external force or tightening of a nut;
an anchor bolt, the upper side of which is formed with a screw thread portion, which is screwed and fastened by a nut, is surrounded by the concave-convex block, and is pressurized by a pressurizing head to expand the expanding sleeve when external force or the nut is screwed, and is further fixed on the side surface of the mounting hole;
the outer wall is tightly attached to the mounting hole, a step part and a front end expanding slot are respectively formed at the upper end and the lower end of the inner wall, a middle expanding slot is formed between the step part and the front end expanding slot, and a striking part struck by a striking tool at the upper end is formed at the threaded part;
the pressurizing head is inserted in the space between the front end expanding grooves of the expanding sleeve, the outer surface of the pressurizing head is provided with an upward inclined bulge protruding upwards in an inclined manner, and a downward inclined bulge protruding downwards in an inclined manner from one end of the upward inclined bulge, so that the lower end of the expanding sleeve is pressurized to expand and the front end reaches the lower end of the mounting hole in order to recess the shape of the space;
a pressing projection extending vertically from the pressing head side so as to have the same outer diameter as the outer diameter of the pressing head between the screw portion and the pressing head, formed obliquely upward toward the screw portion side, and inserted in the intermediate expansion groove so as to be closely contacted therewith, and when moved toward the mounting hole of the pressing head by the external force, the expansion sleeve is pressed to expand;
then, when the nut is tightened, the pressing projection is caught by the inclined surface of the intermediate expansion groove, thereby preventing the pressing projection from being separated upward from the intermediate expansion groove.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2021-0078552 | 2021-06-17 | ||
| KR1020210078552A KR102378511B1 (en) | 2021-06-17 | 2021-06-17 | Deployable sleeve, anchor bolt, and set anchor |
| PCT/KR2022/008537 WO2022265424A1 (en) | 2021-06-17 | 2022-06-16 | Deployment-type sleeve, anchor bolt, and set anchor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117480302A true CN117480302A (en) | 2024-01-30 |
Family
ID=80963412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280042279.2A Pending CN117480302A (en) | 2021-06-17 | 2022-06-16 | Expansion sleeve, foundation bolt and complete anchor bolt |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR102378511B1 (en) |
| CN (1) | CN117480302A (en) |
| WO (1) | WO2022265424A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102378511B1 (en) * | 2021-06-17 | 2022-03-23 | 문철식 | Deployable sleeve, anchor bolt, and set anchor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002181017A (en) * | 2000-12-18 | 2002-06-26 | Japan Drive-It Co Ltd | Expanded and opened anchor |
| KR100625534B1 (en) * | 2005-05-12 | 2006-09-20 | 황인규 | Anchor bolt assembly |
| KR101691770B1 (en) * | 2016-06-22 | 2016-12-30 | 채원식 | Anchor for architectural |
| KR102350066B1 (en) * | 2018-12-21 | 2022-01-11 | 이승우 | Connecting tip for hitting anchor bolt |
| KR102061601B1 (en) | 2019-04-12 | 2020-01-02 | 윤대영 | Stud Anchor Set |
| KR102232854B1 (en) * | 2020-06-17 | 2021-03-26 | 단국대학교 산학협력단 | Anchor with multiple extension sleeve |
| KR102378511B1 (en) * | 2021-06-17 | 2022-03-23 | 문철식 | Deployable sleeve, anchor bolt, and set anchor |
-
2021
- 2021-06-17 KR KR1020210078552A patent/KR102378511B1/en active IP Right Grant
-
2022
- 2022-06-16 CN CN202280042279.2A patent/CN117480302A/en active Pending
- 2022-06-16 WO PCT/KR2022/008537 patent/WO2022265424A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| KR102378511B1 (en) | 2022-03-23 |
| WO2022265424A1 (en) | 2022-12-22 |
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