KR20100010227U - Anchor bolt - Google Patents

Abstract

The present invention relates to an anchor bolt, and in particular, to provide an anchor bolt that is easy to install and fix and to maintain a solid fixed state by a dual structure.

To this end, in the present invention, in the anchor bolt having a bolt member consisting of a head portion formed with a plurality of cutout grooves on the outer circumference and a screwing portion formed at the end, and a wedge extending along the cutout groove, The anchor bolt is coupled to the outside of the head is formed with a plurality of expansion pieces to be expanded at the same time as the head by the wedge, the anchor bolt including a plurality of reinforcing sleeves formed with a plurality of engaging projections engaging the cutting groove on the inner circumference.

Anchor bolt, wedge, reinforcement sleeve, reinforcement pin

Description

Anchor Bolt

The present invention relates to an anchor bolt, and more particularly to an anchor bolt to be easy to install and fix and to maintain a rigid fixed state by a dual structure.

In general, anchor bolts are used to firmly fix interior materials, exterior wall finishing materials or various structures and machines to concrete slabs in various industrial sites.

For example, such an anchor bolt, as shown in FIG. 1, a bolt 10 having a wider head 11 toward the outside and a tubular sleeve 20 having at least two cut pieces 21 formed thereon. ) Is simultaneously inserted into the foundation hole H of the concrete slab, and then the sleeve 20 is blown into the foundation hole H by using a cylindrical blow tube 30 and a tool such as a hammer. There is a method that is pushed toward the head 11 of the bolt and is thereby opened and tightly fixed to the base hole (H), and also as shown in Figure 2 bolt 40 having a cut groove 41 formed crosswise at one end; The conical wedge 50 is brought into contact with the incision groove 41, and the incision groove 41 of the bolt is directly hit by the end of the bolt 40 with a tool such as a hammer while being inserted into the foundation hole H of the concrete slab at the same time. Expanded pieces (43) formed by dividing by the wedge (50) A second hole (H) a method in which a fixed contact.

However, since the former inserts a separate blow tube 30 into the base hole to be in close contact with the sleeve 20 and strikes the sleeve 20 through this, the blow tube 30 must be removed from the base hole H again. The work process is quite cumbersome and inconvenient, and the work time is excessively excessive, and the head 11 having a wider width than the shaft portion of the bolt 10 is integrally formed so that the foundation hole H must be unnecessarily large, so that the bolt ( There was a problem that the gap between the shaft portion and the base hole (H) of 10) is easily shaken when subjected to external force.

And the latter has the advantage that it is relatively easy to install compared to the former, but due to the property of hitting the threaded portion of the bolt 40 directly with a tool such as a hammer, the extension pieces 43 are not uniformly radially expanded when hitting the bolt 40 In some cases, only one of the expansion piece 43 is extended or biased to one side, and often only a part of the fixed piece is generated. As a result, there is a problem in that the installation state is loose and the safety is extremely low.

In particular, the cutting groove 41 of the bolt is formed by a method such as press compression processing in consideration of the marketability and economical efficiency due to the ease of processing and the reduction of production cost, and the width of the cutting groove 41 is a realistic cutting tip (byte) In view of the fact that the minimum thickness of 4) to be formed at least 4mm, and the general diameter of the bolt 40 is 10mm and most of the high-hardness material, the expansion piece (43) formed by these incision grooves (41) ) Is so thin that not only does fatigue fracture occur in the surface contact process with the wedge 50 due to the strike of the bolt 40, but also is easily deformed by external force, thus failing to make the blast chamber or even leaving the base hole (H). There were serious problems such as causing a safety accident.

Therefore, the present inventors have studied intensively for many years in order to develop anchor bolts that are easy to install and maintain a firm fixed state in consideration of the above-mentioned matters, and as a result, the present invention was created and completed.

Therefore, an object of the present invention is to provide an anchor bolt that is easy to install and fix.

Another object of the present invention is to provide an anchor bolt to maintain a solid fixed state without flow and departure.

In order to achieve the above object, the present invention has a bolt member consisting of a head portion formed with a plurality of cutout grooves on the outer circumference and a threaded protrusion formed at an end thereof, and a wedge extending along the cutout groove and extending the head portion. In the anchor bolt, coupled to the outside of the head is provided with a plurality of expansion pieces to be expanded at the same time with the head by the wedge, and provides an anchor bolt including a plurality of reinforcing sleeves formed with a plurality of engaging projections engaging the cutting groove in the inner circumference do.

In addition, the present invention is a bolt member consisting of a head portion formed with a plurality of incision grooves on the outer periphery and a threaded projection formed at the end, and an anchor bolt having a wedge to extend the head while being inserted along the incision groove, the head It is coupled to the outside of the portion is provided with a plurality of expansion pieces to be expanded at the same time as the head by the wedge, and provides an anchor bolt including a reinforcement sleeve formed with a locking projection is engaged with the end of the head portion on the inner end of the expansion piece.

In addition, the head portion and the reinforcing sleeve of the present invention is provided with a through hole, the through hole provides an anchor bolt further provided with a reinforcing pin protruding outward by the wedge.

In addition, the incision groove and the opposite surface of the wedge of the present invention provides an anchor bolt formed with a plurality of separation prevention jaw corresponding to each other.

In addition, the outer circumferential surface of the reinforcing sleeve of the present invention provides an anchor bolt formed with an uneven portion.

In addition, the present invention is a bolt member consisting of a head portion formed with a plurality of departure prevention jaw on the outer peripheral surface and a screw portion formed with a blow projection at the end; A cylindrical sleeve formed on one side of the inner circumferential surface to be screwed with the threaded portion of the bolt member, and having a plurality of cutout grooves formed on the other side thereof; An anti-separation groove is formed in the inner circumference corresponding to the anti-separation jaw of the bolt member, and is provided along the gap between the head and the sleeve of the bolt member to provide an anchor bolt including a conical cylindrical wedge for expanding the sleeve.

In addition, the wedge of the present invention provides an anchor bolt formed cut portion to be expandable and deformable by an external force.

The present invention having the above-mentioned means for solving the problem is a simple operation of hitting the striking projection of the bolt member, while the wedge is inserted along the incision groove, the head of the bolt member and the expansion pieces of the reinforcing sleeve at the same time to double the foundation hole To be combined. Therefore, it is easy and easy to install and fix in the foundation hole, and the reinforcement sleeve prevents fatigue destruction of the head of the bolt member due to the surface contact of the wedge, and also perfectly compensates for the head part being retracted by external force, thereby further strengthening the durability. Therefore, there is a very advantageous effect that the bolt member can be firmly fixed to the base hole without shaking.

In addition, the present invention is provided with a reinforcing pin is projected to the outside along the through hole formed in the head and the reinforcement sleeve by the surface contact with the wedge when hitting the bolt member is embedded in the foundation hole of the concrete slab. Therefore, since the head of the bolt member is more firmly fixed to the concrete slab, there is a very special effect of greatly improving safety and usability, such as preventing the bolt member from being flowed or released by external force.

Hereinafter, the configuration according to each embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

Prior to this, the following terms are defined in consideration of functions in the present invention, which specifies that they should be interpreted in a unique sense commonly used in concepts and technical fields consistent with the technical idea of the present invention.

In addition, if it is determined that the detailed description of known functions or configurations related to the present invention may obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Figure 3 is an exploded perspective view showing an anchor bolt according to a first embodiment of the present invention, Figures 4a and 4b is a cross-sectional view showing a state of use of the anchor bolt according to the first embodiment of the present invention, Figures 3 to 4b As shown, the anchor bolt according to the first embodiment of the present invention includes a bolt 10, a wedge 200, and a reinforcing sleeve 300.

First, the bolt member 100 is the same as the head portion 110, the head portion 110 is formed with a plurality of cutting grooves 111 opened outward around the end inserted into the foundation hole (H) of the concrete slab It consists of a screw portion 120 formed integrally extending on the shaft.

And at the end of the screw portion 120 is a blow protrusion 121 to prevent the screw thread from being crushed in the process of hitting with a tool such as a hammer to insert and fix the bolt member 100 in the base hole (H) of the concrete slab is Formed.

Here, the incision groove 111 of the head is preferably formed in a cross shape with an equal interval radially around the axis when viewed in a plane, but may also be formed in a variety of shapes, such as a straight, asterisk, the sharp portion of the wedge 200 It is preferable to form the center portion in a cylindrical shape so that it can be easily inserted as well as in close contact with the outer surface thereof.

The head part 110 and the threaded part 120 of the bolt member may be formed to have the same or approximate diameter to each other to minimize the gap between the foundation hole H of the concrete slab.

The wedge 200 extends the head 110 while being inserted along the incision groove 111 of the head, and is formed in a conical or tapered pin shape wider toward the outside.

On the other hand, as shown in Figure 5 may be formed on the outer circumferential surface of the wedge (200) and the inner circumferential surface of the cutting groove 111 of the bolt member opposite to the plurality of separation preventing bumps (150, 250) of the corresponding form. .

The release prevention jaw (150, 250) is a wedge 200, even when the wedge 200 is inserted into the cutting groove 111 of the bolt member provides a frictional force with a strong locking action even if the wedge 200 does not hit the bolt member 100 strongly Since it is firmly fixed to the incision groove 111 of the installation can be made very easy and quick.

Here, the separation prevention jaw (150, 250) may be formed by repeating the shape of the cross-section in the shape of a semi-inverted triangle continuously along the tapered surface, or by knurling the horizontal or inclined sawtooth.

The reinforcing sleeve 300 is coupled to cover the outer side of the bolt member head 110 to improve the coupling force of the head, by the wedge 200 to extend simultaneously with the head 110 of the bolt member of the tubular body A plurality of expansion pieces 310 corresponding to the cutting groove 111 of the bolt member is formed at one side, and the screw unit 120 at the head 110 of the bolt member when receiving an external force due to the impact of the bolt member 100, etc. In order to prevent the movement in the direction is formed a plurality of locking projections 320 that is caught on the inner end of the bolt member cutting groove 111.

And the outer peripheral surface of the reinforcing sleeve 300 when the expansion piece 310 is more tightly adhered to the foundation hole (H) of the concrete slab when it is opened by the wedge 200, the bolt member 100 in the external impact The uneven portion 330 is formed so as not to shake or fall easily.

Here, the concave-convex portion 330 is formed in the form of a semi-inverted triangle in the shape of the cross-section similar to the separation prevention jaw 250 of the wedge continuously repeated along the longitudinal direction of the reinforcing sleeve 300, or knurled processing in the shape of a sawtooth horizontally or obliquely. Can be formed.

In addition, the locking projection 320 is formed to press the predetermined portion from the outside of the reinforcement sleeve 300 using a conventional press working machine such that the inner circumferential surface is formed to rise to correspond to the cutting groove 111 of the bolt member. can do.

The reinforcement sleeve 300 is expanded while being simultaneously opened with the head portion 110 by the wedge 200 in the state inserted with the head portion 110 of the bolt member in the base hole (H) of the concrete slab double coupling structure Since the bolt member 100 is able to maintain a more firmly coupled state without being easily flowed even in the external impact.

On the other hand, as shown in Figure 6 the engaging projection 320-1 for preventing the reinforcement sleeve 300 is freely moved in the direction of the screw portion 120 from the head portion 110 of the bolt member is an extension piece of the reinforcement sleeve 310 may be formed to be caught by the contact interference with the head 110 side of the bolt inside the end.

The locking protrusion 320-1 can be easily formed by bending the end of the extension piece 310 inwardly using a conventional bending machine or the like.

On the other hand, as shown in Figure 7, the reinforcing sleeve 300 by protruding the locking projections 150 to be caught between the end of the reinforcing sleeve 300 between the head portion 110 and the screw portion 120 of the bolt member When the bolt member 100 is hit can be completely prevented from moving in the direction of the screw portion (120).

Referring to the operation state of the anchor bolt according to the first embodiment of the present invention configured as described above are as follows.

First, the reinforcing sleeve 300 is coupled to the head 110 of the bolt member, and the end of the wedge 200 is inserted into the incision groove 111 and simultaneously inserted into the foundation hole H of the concrete slab, and then a hammer or the like. When the striking protrusion 121 is strongly hit by the tool, the wedge 200 is inserted along the incision groove by the reaction, and the head 110 of the bolt member and the extension pieces 310 of the reinforcement sleeve 300 are simultaneously expanded. In this case, the head 110 of the bolt member is in close contact with the inner circumference of the reinforcement sleeve 300, and the expansion pieces 310 of the reinforcement sleeve 300 are in close contact with the base hole (H) by a double structure Bonding strength and durability is greatly enhanced, so that a more stable and stable bonding state can be maintained.

Thereafter, a fixing angle or the like may be inserted into the screw part 120 of the bolt member protruding outward from the foundation hole H of the concrete slab, and the structure may be installed by fixing with a washer and a nut.

Figure 8 is an exploded perspective view showing an anchor bolt according to a fifth embodiment of the present invention, Figures 9a and 9b is a cross-sectional view showing a state of use of the anchor bolt according to the fifth embodiment of the present invention, 8 to 9b As shown, the anchor bolt according to the fifth embodiment of the present invention includes a bolt member 100, a wedge 200, a reinforcing sleeve 300, and a reinforcing pin 400.

In particular, the reinforcement pin 400 is for doubling the coupling force between the bolt member 100 and the foundation hole (H) of the concrete slab, the inner end thereof corresponds to the outer peripheral surface of the wedge 200 while protruding smoothly It is formed to be inclined as much as possible, and the outer end is formed so as to be easily embedded in the inner surface of the base hole (H) of the concrete slab.

Through holes 112 and 340 on the same line of the head part 110 and the reinforcing sleeve 300 of the bolt member so that the reinforcing pin 400 may protrude into the base hole H of the concrete slab by surface contact with the wedge 200. ) Are formed respectively.

In addition, the reinforcing pin 400 and the through-holes 112 and 340 may have an elliptical or polygonal shape in cross-section to prevent the reinforcing pin 400 from being freely rotated, and through the outer peripheral surface of the wedge 200. The stable contact allows a sufficient transmission of the pressing force so that it can quickly protrude through the through holes 112 and 340.

In addition, the reinforcement pin 400 has an interference function that prevents the reinforcement sleeve 300 from moving in the direction of the screw portion 120 from the head 110 of the bolt member, so that the locking protrusion or the locking step as in the above-described embodiment is separately provided. There is no need to form.

Here, among the components of the anchor bolt according to the fifth embodiment of the present invention having the same or similar effect as the first embodiment described above, the same reference numerals as those of the first embodiment are used, and the repetitive description thereof is omitted. do.

Referring to the operation state of the anchor bolt according to the fifth embodiment of the present invention configured as described above are as follows.

First, the reinforcing sleeve 300 is inserted into the head 110 of the bolt member to be coupled to each other, and the through holes 112 and 340 formed in each of them are positioned on the same line, and the reinforcing pin 400 is inserted into the through holes 112 and 340. After inserting the end of the wedge 200 in the cutting groove 111 in the state at the same time into the base hole (H) of the concrete slab, and then hitting the striking protrusion 121 with a tool such as a hammer, the wedge ( As the 200 is inserted along the incision groove, the head 110 of the bolt member and the expansion pieces 310 of the reinforcement sleeve 300 are simultaneously extended, and the reinforcement pin 400 is in surface contact with the wedge 200. Sliding protrudes through the through-holes 112 and 340 formed on the same line of the head 110 of the bolt member and the reinforcing sleeve 300 to dig into the inner surface of the base hole (H) of the concrete slab, so that the head of the bolt member 110 is in close contact with the inner circumference of the reinforcement sleeve 300 And the expansion pieces 310 of the reinforcement sleeve 300 are not only strongly strengthened by a double structure that is closely coupled to the base hole H, but also by the reinforcement pin 400 to maintain a more firm and stable coupling state. will be.

Thereafter, a fixing angle or the like may be inserted into the screw part 120 of the bolt member protruding outward from the foundation hole H of the concrete slab, and the structure may be installed by fixing with a washer and a nut.

10 is an exploded perspective view showing an anchor bolt according to a sixth embodiment of the present invention, Figures 11a and 11b is a cross-sectional view showing a state of use of the anchor bolt according to the sixth embodiment of the present invention, 10 to 11b As shown, the anchor bolt according to the sixth embodiment of the present invention includes a bolt member 500, a sleeve 600, and a wedge 700.

First, the bolt member 500 is composed of a head portion and a screw portion, the outer circumferential surface of the head portion is formed with a plurality of separation preventing jaw 511 to secure a firm coupling force with the wedge in the form of a sawtooth, the end of the screw portion bolt member ( In order to insert and fix the 500 into the foundation hole H of the concrete slab, a blow protrusion 521 is formed to prevent the screw thread from being crushed in the process of hitting with a tool such as a hammer.

In addition, the diameter of the head 510 is slightly smaller than the diameter of the screw 520, so that the wedge 700 may be smoothly inserted between the sleeve 600 and the head 510, thereby expanding the sleeve.

The sleeve 600 is formed in a cylindrical shape and has a thread corresponding thereto to be screwed with the threaded portion 520 of the bolt member on one side of the inner circumferential surface thereof, and a wedge 700 at a portion located outside the head portion 510. A plurality of incision grooves 610 are formed to facilitate expansion during insertion.

In addition, the outer circumferential surface of the sleeve 600 is formed in the concave-convex portion 630 to more firmly adhere to the foundation hole (H) of the concrete slab so that the bolt member 500 does not easily shake or fall out from the external impact.

Wedge 700 is formed in a conical cylindrical shape to extend along the end of the sleeve 600 while being inserted between the head portion 510 and the sleeve 600 of the bolt member, the departure prevention jaw 511 of the bolt member on the inner circumference A plurality of departure prevention grooves 711 corresponding to the plurality are formed.

And along the longitudinal direction of the wedge 700 is cut portion 720 is formed so that the expansion deformation when the pressing force generated by the coupling with the head portion 510 of the bolt member.

Here, the cutout 720 may be formed along a circumferential surface of the wedge 700, and in this case, only a portion of the cutout 720 is cut along the longitudinal direction of the wedge 700 except for any one of the plurality of cutouts 720. It is preferable to form in a form.

Therefore, even though the inner diameter of the wedge 700 is slightly smaller than the outer diameter of the head portion, the coupling is made while the outside is opened by the external force due to the impact of the bolt member 500, and the tight coupling with the sleeve 600 is made more tightly. State can be maintained.

Referring to the operation state of the anchor bolt according to the sixth embodiment of the present invention configured as described above are as follows.

First, the end of the wedge 700 is inserted through the gap formed between the sleeve and the head in a state in which the threaded portion of the sleeve 600 is coupled to the threaded portion 520 of the bolt member, and then simultaneously inserted into the foundation hole H of the concrete slab. And, when hitting the striking projection 521 strongly with a tool such as a hammer, the conical cylindrical wedge 700 which is wider toward the outside by the reaction is inserted along the head 510 and the sleeve 600 at the same time. This will allow the sleeve to penetrate the inner surface of the foundation hole (H) of the concrete slab and get stuck and maintain a stable engagement.

In addition, since the coupling between the head 510 and the wedge 700 and the screw 520 and the sleeve 600 of the bolt member is fixed to each other in the form of screw coupling and male and female coupling, it is possible to maintain a solid installation even in external forces.

Moreover, unlike the conventional method, the sleeve 600 can be simply inserted and fixed in the foundation hole H of the concrete slab without a separate impact tube.

On the other hand, the present invention is not limited to the above-described embodiment and the accompanying drawings, it can be changed to other embodiments equivalent to substitution and equivalent within the scope without departing from the technical spirit of the present invention is usually in the art It will be evident to those who have knowledge of.

1 and 2 is a cross-sectional view showing an anchor bolt according to the prior art,

3 is an exploded perspective view showing an anchor bolt according to a first embodiment of the present invention;

Figure 4a and 4b is a cross-sectional view showing a state of use of the anchor bolt according to the first embodiment of the present invention,

Figure 5 is a side cross-sectional view showing an anchor bolt according to a second embodiment of the present invention,

Figure 6 is a side cross-sectional view showing an anchor bolt according to a third embodiment of the present invention,

Figure 7 is a side cross-sectional view showing an anchor bolt according to a fourth embodiment of the present invention,

8 is an exploded perspective view showing an anchor bolt according to a fifth embodiment of the present invention;

9a and 9b is a cross-sectional view showing a state of use of the anchor bolt according to the fifth embodiment of the present invention,

10 is an exploded perspective view showing an anchor bolt according to a sixth embodiment of the present invention;

11a and 11b is a cross-sectional view showing a state of use of the anchor bolt according to the sixth embodiment of the present invention,

<Explanation of symbols for the main parts of the drawings>

100: bolt 110: head

111: incision groove 112: through hole

120: screw portion 121: blow projection

150: Jaw 200: Wedge

250: release prevention jaw 300: reinforcement sleeve

310: extension 320: jamming projection

330: uneven portion 340: through hole

350: release prevention jaw 400: reinforcement pin

Claims (8)

In the anchor bolt having a bolt member consisting of a head portion formed with a plurality of cutout grooves on the outer circumference and a screwing portion formed with a hitting protrusion at the end, and a wedge extending along the cutout groove to extend the head portion, A plurality of expansion pieces are coupled to the outside of the head portion to be expanded at the same time as the head portion by the wedge, anchor bolt including a plurality of reinforcing sleeves formed with a plurality of engaging projections engaging the cutting groove on the inner circumference. In the anchor bolt having a bolt member consisting of a head portion formed with a plurality of cutout grooves on the outer circumference and a screwing portion formed with a hitting protrusion at the end, and a wedge extending along the cutout groove to extend the head portion, A plurality of expansion pieces are coupled to the outside of the head portion to be expanded at the same time as the head portion by the wedge, anchor bolt including a reinforcement sleeve is formed on the inner end of the expansion piece is formed with a locking projection engaging the end of the head portion. In the anchor bolt having a bolt member consisting of a head portion formed with a plurality of cutout grooves on the outer periphery and a screw portion formed with a hitting projection at the end, and a wedge extending along the cutout while extending the head portion, Anchor bolt coupled to the outside of the head portion includes a reinforcement sleeve formed with a plurality of expansion pieces to be expanded at the same time with the head by the wedge, the engaging jaw is projected engaging the end of the reinforcement sleeve between the head portion and the screw portion. 4. The method according to any one of claims 1 to 3, The head portion and the reinforcing sleeve is formed with a through hole, the through hole anchor bolt further provided with a reinforcing pin protruding outward by the wedge. 4. The method according to any one of claims 1 to 3, Anchor bolts formed with a plurality of separation prevention jaw corresponding to each other on the opposite surface of the cutting groove and the wedge. 4. The method according to any one of claims 1 to 3, Anchor bolt formed with an uneven portion on the outer peripheral surface of the reinforcing sleeve. A bolt member comprising a head part having a plurality of separation prevention jaws formed on an outer circumferential surface thereof and a screw part having a hitting protrusion formed on an end thereof; A cylindrical sleeve formed on one side of the inner circumferential surface to be screwed with the threaded portion of the bolt member, and having a plurality of cutout grooves formed on the other side thereof; A conical cylindrical wedge formed at an inner circumference corresponding to a separation prevention jaw of the bolt member and extending along the sleeve while being inserted along the head and the sleeve of the bolt member; Anchor bolt comprising a. The method of claim 7, wherein The wedge is an anchor bolt formed with a cutting portion to be expanded and deformable by an external force.

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