WO2018143528A1

WO2018143528A1 - Fixing means

Info

Publication number: WO2018143528A1
Application number: PCT/KR2017/008270
Authority: WO
Inventors: 김영권
Original assignee: 주식회사 코어볼트
Priority date: 2017-02-03
Filing date: 2017-08-01
Publication date: 2018-08-09
Also published as: KR20180090763A; KR101983231B1; KR101879276B1

Abstract

The present invention relates to a fixing means (a set of bolts). More particularly, the present invention relates to a fixing means having a physical property and structure configured such that a locking unit is expandably transformed or displaced by tightening a core bolt penetrating through a base bolt, thereby pressing a fixing portion. When vibrations such as earthquakes occur, the fixing means itself or wall attachments fixed onto interior walls by means of the fixing means, including pieces of furniture and lighting fixtures, are prevented from being separated from a fixing portion, and can be dismantled without destruction as pressure can be adjusted by expansion and contraction. The fixing means can be used in environments which permit work on only one side or structures which permit work on only one side, for example interior walls and ceiling fixtures such as upper kitchen cabinets, wall-mountable TVs, wall-mountable air conditioners, kitchen lighting, rail lighting, projectors, etc., and exterior fixtures such as signboards, lighting fixtures, etc.

Description

Fixing means

The present invention relates to a fixing means (bolt set), and more particularly, the physical property of pressing the fixing part while the locking unit (expandable shape deformation or position change) by tightening the core bolt through the base bolt. It is composed of a structure that prevents wall attachments, including furniture and fixtures, which are fastened to the fixing means itself or the fixing means in the event of vibration including an earthquake, so as not to be detached from the fixing portion, while expanding (expanding) and contracting pressure. It is adjustable and can be dismantled without destroying, and it is possible to work in one direction only. (For example, indoor wall and ceiling attachments include kitchen cabinets, wall-mounted TVs, wall-mounted air conditioners, kitchen lights, rails, projectors, etc. Signage, lighting, etc.) or fixing means that can be used in an environment .

In general, a bolt including a screw, which is a type of fastening means, is a type of nail having a groove in a head and a spiral furrow in a long elongated body. Screw to fix.

Recently, many seismic bolts have been introduced that do not fall out even during vibration, including earthquakes. The bolt fastening is bidirectional, that is, the structure in which the bolt head and the nut bite the fixed object in both directions, so that the two-way torque is generated and do not physically fall out. Fixtures of frictional coupling structure are used

For reference, the knife block is referred to as Carl Plug, and is also called an expansion plug / anchor. In a broad sense, it belongs to anchors, but usually anchors refer to metals used to fix heavy objects with anchor bolts, and knife blocks refer to plastic products used for fixing lightweight objects.

Returning to the above, the friction coupling structure has a problem in that surface corrosion occurs due to a drill rotational force and thermal deformation due to friction of the wall during construction, and sometimes flows or detaches from the fixed structure after time due to the occurrence of play caused by insufficient construction.

For example, kitchen cabinets, bookcases, wall racks, lighting, furniture, or other furniture or appliances attached to any other wall or ceiling inside the house are detached as the knife block and the direct-piece piece move during vibrations including earthquakes. There is a problem in safety that the mechanism and the like fall. This is especially a serious problem for safety during an earthquake.

1 is a cross-sectional view showing a state in which a groove is formed on the wall surface, Figure 2 is a cross-sectional view showing a state in which the combination of the knife block and the direct connection piece is fixed to the groove of the wall surface.

In more detail with reference to the accompanying drawings, as shown in Figure 1, using a drill in the wall (W) first to drill a groove (H) or a hole, in the process to maintain the drill at a right angle to the wall It should be drilled in a continuous state, but it is common that the inner portion of the groove (H) is expanded by the drill flow due to the vibration and the rotational force during the drilling operation.

In this case, even if the knife block (B) is inserted into the groove (H) and the direct connection piece (P) is inserted into the extended inner portion of the groove (H) as shown in Figure 2, the knife block (B) And a gap of 'g' is generated, and when a vibration occurs, flow occurs around a portion where the groove (H) of the wall (W) starts. If this state persists for a long time or the vibration is severe, a knife block ( The combination of B) and the direct connection piece (P) is detached, there is a problem that the furniture or utensils fixed to the wall by the combination of the knife block (B) and the direct connection piece (P) fall.

There is a set anchor similar to the knife block as described above, but the purpose itself is to be applied to the floor or weight structure, because of the size is not suitable for fixing furniture or appliances used in ordinary homes. In addition, set anchor bolts have no restoring force after the change of shape, so they cannot be dismantled except for cutting the protrusions. In this case, wall destruction may occur.

On the other hand, in Korea, the number of private houses is decreasing and most of the apartments are increasing. This phenomenon is ongoing and it is predicted that multi-unit housing will meet most demand in the future. In the case of MDUs, concrete wall construction is used as the name of apartments. In other words, it is a bearing wall made of concrete, and some of its internal structure is called variable wall, which is composed of wooden structure and plasterboard.

On the other hand, Western countries still prefer private homes, except for urban areas due to the large land. In other words, the Western wooden houses are the majority, and the wall is similar to our variable wall. Hollow Wall is a wall made of gypsum board and insulation and outer wall such as OBS plywood. In the West, a number of anchor bolts for fixing Hollow Wall have been developed, but it is used for variable walls that cannot use concrete walls. As a feature of these products, the wall thickness is limited and the product must be destroyed even if it is impossible to disassemble or dismantle after installation.

Accordingly, there is a demand for a bolt structure in one direction having a bidirectional torque structure corresponding to both the bearing wall and the variable wall.

The present invention is to solve the problems of the prior art as described above, by locking the core bolt penetrating the base bolt (Locking Unit) and expandable shape deformation or positional change of the physical properties and pressing the fixed site It is structured so that the wall attachments including furniture and fixtures which are fastened to the fixing means itself or the fixing means in the event of vibration including earthquake are prevented from being detached from the fixing portion, and the pressure is controlled by expansion (expansion) and contraction. It can be dismantled without destruction, and can only be worked in one direction (eg indoor wall and ceiling attachments such as kitchen cabinets, wall-mounted TVs, wall-mounted air conditioners, kitchen lights, rails, projectors, etc.) , Lighting, etc.) or a fixed means that can be used in an environment that can only work in one direction. It is aimed at.

The present invention for achieving the above object is one end is inserted into the hole of the fixing structure, the other end is exposed to the outside base bolt to provide a fixed portion of the fixed object; A core bolt screwed in such a manner as to be retractable through a center along the length of the base bolt; As the core bolt advances and retracts, the expandable shape deformation or positional movement with the base bolt is applied to the inner diameter of the hole of the fixed structure or the surface of the fixed structure (opposite side of the surface where the fixing means is inserted), thereby providing a base force. It characterized in that it comprises a; locking member to prevent the bolt from being separated.

The present invention by the above-described problem solving means is a screw formed in the core bolt tip by inserting a tool (driver) through the through-hole formed with a screw thread in the inner diameter of the center of the base bolt in the state that the base bolt is inserted into the hole of the fixed structure It is inserted into the groove so that the core bolt is advanced in the outward direction of the fixed structure, and in this process, the locking member located between the head of the core bolt and one end of the base bolt is expanded through the deformation deformation or positional movement of the fixed structure. By the pressing force acting on the hole or the inner wall, it is possible to obtain the effect of maintaining a firm fixed state so as not to detach the fixing means in the hole.

In addition, the present invention can not only prevent the flow and detachment of the fixing means in the event of vibration, including earthquake, through the solid holding force as described above, but also by preventing the fixed object fixed by the fixing means (falling resistance), The effect of providing a fixing means with improved stability is obtained.

In addition, the present invention in the fixed state as described above due to the corrosion of the base bolt or expansion of the hole, when the play between the hole and the base bolt, the core bolt is rotated without replacing the entire fixing means to reduce the pressing force of the locking member By making it possible to increase, the effect of ensuring the ease of correction for play of the play is obtained.

In addition, the present invention is to be used both in the concrete wall and the variable wall, in the case of the variable wall is not limited to the wall thickness is easy to dismantle without breaking the product.

In addition, the present invention has the effect of reducing the cost by increasing the load strength and removing the bracket by fastening the target directly to the thread of the inner diameter of the center bore of the through-hole of the base bolt exposed to the outside.

In addition, the present invention has an interior effect because the bolt and nut is not exposed by fastening the closing cap to the outer diameter thread of the base bolt exposed to the outside.

1 is a cross-sectional view showing a state in which a groove is formed on the wall surface.

Figure 2 is a cross-sectional view showing a state in which the combination of the knife block and the direct connection piece is fixed in the groove of the wall.

3 is a perspective view showing a configuration according to a first embodiment of the present invention;

Figure 4 is an exploded perspective view showing in more detail the configuration according to the first embodiment of the present invention.

5 is a cross-sectional view showing a configuration of the configuration according to the first embodiment of the present invention and the combination of each configuration.

6 is a perspective view showing another configuration of the base bolt according to the first embodiment of the present invention.

7 is a cross-sectional view showing a state in which a hole is formed in the fixed structure.

8 is a cross-sectional view showing a state in which the present invention is inserted into the hole of the fixing structure except for the nut.

Figure 9 is a cross-sectional view showing a state in which the locking member of the present invention in the hole of the fixed structure to provide a pressing force while interviewing the hole inner diameter through the expandable mold deformation to prevent detachment.

10 is a cross-sectional view showing a state in which the locking member provides a pressing force to prevent detachment in a hole of a fixed structure (a hole in an inwardly expanded diameter state).

11 is a cross-sectional view illustratively showing a separate tool for rotating the core bolt of the present invention.

12 is a cross-sectional view showing a state in which the locking member provides a pressing force in the bearing wall to prevent detachment.

13 is a cross-sectional view showing a state in which the locking member is provided with a pressing force in the variable wall to prevent detachment.

14 is a sectional view showing a configuration according to a second embodiment of the present invention.

15 is a cross-sectional view showing a configuration according to a third embodiment of the present invention.

Figure 16 (a), (b) is a perspective view respectively showing the structure of the closing cap applied to the end of the fixing means of the present invention.

17 to 21 are cross-sectional views showing different usage states according to the first embodiment of the present invention, respectively.

Figure 22 is an exploded perspective view showing a separate configuration according to a fourth embodiment of the present invention.

Figure 23 is an assembled cross-sectional view of the assembly according to the fourth embodiment of the present invention.

24 is an assembled sectional view showing a structure in which the locking member of the configuration according to the fourth embodiment of the present invention protrudes outward.

25 is a use state diagram of a configuration according to a fourth embodiment of the present invention.

Description of reference numerals

10: fixing means 11: base bolt

11a: thread through hole 11b: external thread

11c: holding hole 12: core bolt

12a: screw portion 12b: head portion

12c: Driver groove 13: Lock member

13a: extension blade 13b: friction protrusion

14: nut 1: fixed structure

2: hole O: fixed object

Hereinafter, with reference to the preferred embodiments of the present invention and the accompanying drawings will be described in detail, the same reference numerals in the drawings will be described on the assumption that the same components.

When any one element in the description or claims of the invention "includes" another element, unless otherwise stated, it is not limited to consisting only of that element, and other elements are not interpreted. It should be understood that it may include more.

First, the fixing means 10 of the present invention, as shown in the accompanying drawings 3 to 6, one end is inserted into the hole (2) of the fixing structure 1, the other end is exposed to the outside to fix the object ( A base bolt 11 providing a fixed portion of O); A core bolt 12 screwed in such a manner as to be retractable through the center along the base bolt 11 in a longitudinal direction; The inner diameter of the hole 2 of the fixed structure 1 or the surface of the fixed structure 1 (fixing means) while the expandable mold deformation or positional movement between the base bolt 11 and the position moving with the core bolt 12 advancing. The locking member 13 which provides a pressing force against the surface opposite to the surface (10) to be inserted) to prevent the base bolt 11 from being separated.

In addition to the present invention, the nut 14 may be further fastened to a portion exposed to the outside of the base bolt 11.

In this case, the nut 14 may provide a function of providing a torque to draw a portion inserted into the hole 2 of the fixing structure 1 to provide a fixing force or to fix the fixing object O.

Hereinafter, the first embodiment of the present invention will be described in detail. In the present invention, the base bolt 11 is a block body provided with a screw through hole 11a having a screw thread formed in an inner diameter in a center thereof in a longitudinal direction thereof. Is provided with an outer diameter screw thread 11b in the same direction or in the reverse direction of the screw thread of the screw through hole (11a) may be made in the form of a stud bolt.

3 to 6, the locking member 13 is fitted to the outer diameter of the core bolt 12, the base bolt 11 from a single rim outer diameter or one side located on the head portion 12b side. A plurality of extension blades 13a made of the same body in the radial direction are provided radially, or the extension blades 13a are extended radially, and the base bolts are formed on one side of the head portion 12b of the core bolt 12. 11) may be provided with an expansion induction path for spreading the expansion blade (13a) outwardly by the pressure applied between them.

At this time, the outer diameter screw thread 11b may be formed in the entire outer diameter of the base bolt 11, but may be formed only in a portion of the outer diameter of the end portion to which the nut 14 or the fixed object O is coupled.

Further, at the end of the base bolt 11 in the direction in which the fixing object O or the nut is coupled, a holding groove 11c into which the holder for forcibly preventing rotation as the core bolt 12 is rotated is fitted. Can be prepared.

Meanwhile, in the present invention, the core bolt 12 includes a screw portion 12a corresponding to the screw through hole 11a formed at the center of the base bolt 11 and a head portion 12b provided at one side of the screw portion 12a. ), And a driver groove 12c provided at the other end of the screw portion 12a.

At this time, the tip of the head portion 12b is formed in a flat disk shape, it may be made of a hemispherical shape or a wedge shape.

In addition, the driver groove 12c may be formed of a straight or cross or a specific shape groove.

In addition, the base bolt 11 and the core bolt 12 may be made of a main member, an aluminum material, a stainless steel, or a plastic material having rigidity. In addition, the mechanical properties (tensile strength, yield point, elongation) of the material is preferably the same, but if they are different, the base bolts that support the load may have rigidity.

Selection of the material and mechanical properties is preferably designed and applied selectively according to the field and lifespan and needs of the fixing means 10 of the present invention.

On the other hand, in the present invention, the locking member 13 is fitted to the outer diameter of the screw portion 12a provided in the core bolt 12, the head portion 12b and the base bolt 11 of the core bolt 12 It may be located between one end.

The extended induction path may be a curved inclined plane, and the curved inclined plane may be a convex inclined plane or a concave inclined plane or a composite thereof.

In this case, the head portion 12b is moved toward the base bolt 11 by the rotation operation of the core bolt 12, and the pressure is applied between the base bolt 11 and the head portion 12b. The inner blades of the fixed structure 1 are opened as the extension blades 13a are pulled radially (like an umbrella) on the face of the curved extension induction path, i.e. with an expandable shape deformation in the outward direction. Pressing the expanded surface of the or to provide a fixing force through the surface close to the outer surface of the fixed structure 1 (the opposite side of the front surface where the fixing means 10 is inserted).

In addition, the material of the locking member 13 may be a synthetic resin material having an elastic restoring force, may be a metal material in which position deformation or shape deformation is made by the pressing force, or may be a composite of the materials.

Referring to the operation of the first embodiment of the present invention as follows.

First, the present invention, as shown in Figure 7 of the accompanying drawings, the fixing structure 1, for example, the hole 2 is formed on the wall by an electric drill, and as shown in Figure 8 of the accompanying drawings, the base bolt 11 ) And the fixing means 10, which is a combination of the core bolt 2 and the locking member 13, are inserted into the hole 2. At this time, the head portion 12b of the core bolt 12 is inserted so as to face the inside of the hole 2, and inserts so that a part of one end of the base bolt 11 is exposed to the outside of the wall surface. At this time, the exposed portion is a fastening portion of the nut or the closing cap.

Then, as shown in FIG. 9, the driver (including the electric driver) is led into the screw through hole 11a of the base bolt 12, and inserted into the driver groove 12c of the core bolt 12 to rotate. Let's do it.

Then, the core bolt 12 is rotated to move forward in the wall outward direction, and in the process, the head part 12b moves to the base bolt 11 to press the locking member 13 to perform the above-described expandable mold deformation. It provides a pressing force to the inner diameter of the hole (2) while being fixed in a state to prevent the detachment of the fixing means (10).

At this time, the fixing means 10 of the present invention is the inner diameter of the inner portion of the hole 2 of the fixing structure 1 is expanded (workability that the drill does not maintain a right angle because the wrist flows due to the vibration and rotational force of the drill during drilling) Even when generated by the inadequate), the locking member 13 is fixed in a state in which detachment of the fixing means 10 is prevented by providing a pressing force to the inner diameter of the hole 2 through an expandable mold deformation.

The general knife block and the direct connection piece or the usual fixing means, when the inner inner diameter of the hole 2 is expanded, as shown in Figure 10, the portion located on the inner side relative to the 'A' portion when the vibration occurs up, down, left and right , When the fixed object (O) is fixed by the weight of the fixed object (O) to flow and detached, the present invention, because the locking member 13 provides a pressing force for the 'B' portion, 'A' portion and Since the structure is supported at the 'B' part, the bearing capacity may be maintained stably.

As described above, the fixing means 10 of the present invention forcibly prevents the rotation of the core bolt 12 at the end of the base bolt 11 in the direction in which the fixing object O or the nut is coupled. The holder is fitted with a holding groove (11c) is further provided, as shown in Figure 11, when the holder is integrally or separately provided with a drill in the holding groove (11c) when rotating the core bolt 12 It is preferable to prevent the base bolts 11 from rotating together.

In the present invention as described above, the base bolt 11 is inserted into the hole 2 of the fixed structure 1, and a tool (through a threaded through hole 11a having a screw thread formed in the inner diameter of the center of the base bolt 11) ( Driver) is inserted into the driver groove 12c formed at the tip of the core bolt 12 and rotated so that the core bolt 12 is advanced in the outward direction of the fixed structure 1, and in this process, the core bolt 12 The locking member 13 located between the head portion 12b of the base bolt 11 and one end of the base bolt 11 has an urging force acting on the inner wall or the hole 2 of the fixed structure 1 through the expansion mold deformation or positional movement. By doing so, it is possible to maintain a firm fixed state so that the fixing means 10 does not detach from the hole 2.

In addition, the present invention not only prevents the flow and detachment of the fixing means 10 when vibrations, including earthquakes, through the solid holding force as described above, the fixed object (O) fixed by the fixing means (10) By preventing the fall (shockproof), it is possible to provide a fixing means with improved stability.

In addition, the present invention, even if the clearance between the hole 2 and the base bolt 11 due to the corrosion of the concrete wall or expansion of the hole 2 in the fixed state as described above, the entire fixing means 10 By rotating the core bolt 12 to increase the pressing force of the locking member 13 without replacing, it is possible to ensure the ease of correction for the play of the play.

As shown in FIG. 12, when the fixing means 10 of the present invention is used for the bearing wall, as described above, the extension blade 13a of the locking member 13 is inserted between the base bolt 11 and the bearing wall. It is possible to prevent the flow of the base bolt 11 to be able to stably support the fixed object.

And, as shown in Figure 13, when the fixing means 10 of the present invention is used for the variable wall, the expansion blade (13a) of the locking member 13 is extended in the direction of spreading is in contact with the inner surface of the variable wall The outer surface of the variable wall prevents the flow of the base bolt 11 by fastening the nut 14 is able to stably support the fixed object.

And, as shown in Figure 17, the end of the base bolt 11 exposed to the outside of the fixed structure 1, one side is open and the fastening member 15a fastened to the outer surface of the base bolt 11 in the center Hemispherical closing cap 15 having a fastening.

As shown in (a) of FIG. 16, the closing cap 15 may be formed in a hemispherical shape having a fastening member 15a protruding toward one side of the open side and fastened to an outer surface of the base bolt 11. .

Since the finishing cap 15 is provided at the end of the base bolt 11 exposed to the outside of the fixed structure 1, the base bolt protruding because it can shield the end of the base bolt 11 exposed to the outside from the outside It is possible to prevent the operator or user from being injured by scratching or bumping the skin by the end of (11).

In addition, the threaded through-hole 11a of the base bolt 11 exposed to the outside of the fixed structure 1 is fastened to the ring member 16 by fastening the end of the hook member 16 is formed to be hooked with various objects on the ring member 16 So that it can be used conveniently.

As shown in FIG. 18, the base bolt 11 exposing the finishing cap 15 to the outside in the state in which the end of the extension blade 13a is in contact with the inner wall surface of the variable wall while the extension blade 13a is opened. By fastening to the end of the base bolt 11 has the effect of improving the fastening force fixed to the variable wall.

As shown in FIG. 19, the threaded through hole 11a of the base bolt 11 exposed to the outside of the fixed structure 1 is formed of threads attached to both end surfaces of the two-stage and three-stage curtain rods 17. By fastening the fastening pins 17a, the curtain can be installed safely and securely.

In addition, it is also effective in reducing costs because the bracket and the direct connection to remove the existing curtain rod installation method.

In addition, as shown in Figure 20, in the case where the fixing means according to the present invention is installed on the ceiling, the end cap of the extension blade (13a) in contact with the inner surface of the ceiling in the state that the expansion blade (13a) is open By fastening the 15 to the end of the base bolt 11 exposed to the outside, the base bolt 11 can be firmly fixed to the ceiling, and in such a state, such as kitchen lights, rails, etc. A fastening pin 18a formed of a screw thread is attached to the end of the fixing part 18, and the fastening pin 18a is fastened to the screw through hole 11a of the base bolt 11 to be installed. It is safe and cost-effective as it can withstand high loads and vibrations by removing brackets and finishing flanges, which are light fastening methods using existing wires.

In addition, as shown in FIG. 21, a part of the fastening pin 18a protrudes out of the base bolt 11 in the screw through hole 11a of the base bolt 11 exposed to the outside of the fixing structure 1. The extension member 18 is fastened to the outer surface of the fastening pin 18a that protrudes to the outside, thereby extending the length of the base bolt 11 to enable various applications using the extension member 18. have.

Next, looking at the second embodiment of the present invention, as shown in Figure 14, the locking member 13 is fitted to the outer diameter of the screw portion (12a) provided in the core bolt 12, the core bolt 12 It may be located between the head portion 12b and one side end of the base bolt 11 provided in the.

The locking member 13 may be provided with the same radially extending wings 13a at the outer diameter of the pair of rims that are provided at intervals. The locking member 13 is expanded by applying pressure on both sides of the pair of rims by the pressure when the head 12b moves toward the base bolt 11 by the rotation operation of the core bolt 12. As the wing 13a expands and deforms in the outward direction, it pressurizes the inner diameter of the hole 2 of the fixed structure 1 to provide a fixed force.

In addition, the length of the locking member 13 may be 20 to 40% of the total length of the fixing means 10, but the degree of the fixing force required for the fixing means 10 or the structure or application of the fixing structure (1) The design change may be made by adding or subtracting. However, if the length ratio is less than or exceeded, the fixing force may be lowered. In this case, the thickness of the locking member 13, in particular, the thickness of the extension wing 13a, may be preferable.

Looking at this third embodiment of the present invention, as shown in the accompanying drawings, Figure 15, the locking member 13 is fitted to the outer diameter of the core bolt 12, is located at one side end side of the base bolt 11 A plurality of extension blades 13a made of the same body extend radially in a direction of the head 12b of the core bolt 12 from a single rim outer diameter or one side thereof, and a core bolt 12 on one side of the base bolt 11. When the pressure is applied from) may be provided with an expansion induction path for spreading the expansion blade (13a) to spread outward.

In this case, the head portion 12b is moved toward the base bolt 11 by the rotation operation of the core bolt 12, and is caused by the pressure applied between the base bolt 11 and the head portion 12b. The extension blades 13a are radially (like umbrellas) on the curved surface, which is an expansion induction path formed in the base bolt 11, that is, in an outwardly expanding form deformation, and the fixed structure 1 Pressing the expanded surface of the inner diameter of the hole (2) of the fixed structure (1) is provided on the outer surface (an opposite surface of the front surface where the fixing means 10 is inserted) is caught in the state to provide a fixing force.

Finally, the fourth embodiment of the present invention, as shown in the accompanying drawings, Figures 22 to 24, the base located in the hole 2 formed in the fixed structure (1) or through the fixed structure (1) A locking member 13 having a pin shape in an outer diameter direction is inclined to penetrate inwardly from one end surface of the bolt 11 to approach the base bolt 11 terminal direction through the rotational withdrawal of the core bolt 12 ( 12b), the locking member 13 is pushed and moved in the outer diameter direction of the base bolt 11 to provide a pressing force against the inner diameter of the hole 2 formed in the fixed structure 1 or the surface of the fixed structure 1. It may be.

At this time, the head portion 12b of the core bolt 12 is a portion in contact with the terminal of the locking member 13 is extended in the form of curved (concave curved), pin-shaped locking member 13 is the head portion The part in contact with 12b may be in the form of a sphere.

In addition, a plurality of the locking member 13 may be provided radially.

In this case, as shown in FIG. 25, when the core bolt 12 is rotated by a driver, the head part 12b is pulled out along the screw through hole 11a, and the locking member 13 of the pin shape is formed. ), The lock member 13 is drawn out to the outer diameter of the base bolt 11 in the process, that is, while moving the position to provide the pressing force to the inner diameter of the hole (2) to fix the fixed object (0) To maintain a firm fixing).

And, the end of the base bolt 11 protruding to the outside of the fixing structure 1, the nut 14 is fastened to be in contact with the outer surface of the fixing object (0) fixing object (0) using the fixing means according to the present invention It can be to improve the fixing force of.

In addition, the end of the base bolt 11 exposed to the outside of the fixing structure 1, the fastening pin 19a and fastening pin 19a provided to be fastened to the screw through hole 11a of the base bolt 11 It is effective that the closing cap 19 is formed of a hemispherical cover member 19b protruding from the inner center and opened at one side to accommodate the nut 14.

As shown in (b) of Figure 16, the closing cap 19 is a hemispherical shape having a fastening pin (19a) protruding toward one side of the open side is fastened to the screw through hole (11a) of the base bolt 11 It may be formed of a cover member (19b).

Since the closing cap 19 is provided at the end of the base bolt 11 exposed to the outside of the fixed structure (1), it is possible to shield the end of the base bolt 11 exposed to the outside from the base bolt (protruding) 11) there is an effect that can prevent the operator or user from being injured by scratching or bumping the skin.

In general, a factory or warehouse is constructed as a sandwich panel during construction. In the case of a structure that is fastened directly from the outside using a conventional direct connection piece and penetrates the internal structure, it is not a structure having a bi-directional physical property. Because of this, friction is generated only in the cross section of the steel plate among the components of the sandwich panel, and pieces are rubbed into the structure.

On the other hand, as described above, if the fixing means according to the fourth embodiment of the present invention is applied to the sandwich panel, there is an effect that it is easy to install and release inside the sandwich panel and is not exposed to the outside even aesthetically.

The technical spirit of the present invention has been described through several embodiments.

It will be apparent to those skilled in the art that the present invention may be variously modified or changed from the description of the present invention. In addition, even if not explicitly shown or described, those skilled in the art to which the present invention pertains various modifications, including the technical idea according to the present invention from the description of the present invention. Is obvious, and still belongs to the scope of the present invention. The above embodiments described with reference to the accompanying drawings are described for the purpose of illustrating the present invention, and the scope of the present invention is not limited to these embodiments.

Claims

One end is inserted into the hole (2) of the fixing structure (1), the other end is exposed to the outside base bolt (11) to provide a fixed portion of the fixed object (O);

A core bolt 12 screwed in such a manner as to be retractable through the center along the base bolt 11 in a longitudinal direction;

As the core bolt 12 moves forward and backward, the expandable shape deformation or positional movement between the base bolt 11 is provided, and the pressing force is applied to the inner diameter or the inner wall of the hole 2 to provide an urging force. Fixing means characterized in that it comprises a; locking member (13) to prevent separation.
The method of claim 1,

Fixing means that the nut 14 is further fastened to the portion exposed to the outside of the base bolt (11).
The method of claim 1,

The base bolt 11 is a block body provided with a threaded through-hole 11a formed with a screw thread in the inner diameter along the longitudinal direction at the center thereof, and the outer diameter of the block body is the same as or opposite to the screw thread of the screw-through hole 11a. Fixing means made of a threaded bolt (11b) is provided in the form of a tannery bolt.
The method of claim 1,

A fixing groove (11c) is further provided at the end of the base bolt (11) in the direction in which the fixing object (O) or the nut is coupled, in which a holder for forcibly preventing rotation as the core bolt (12) is rotated. Way.
The method of claim 1,

The core bolt 12 has a screw portion (12a) corresponding to the screw through hole (11a) formed in the center of the base bolt 11; A head part 12b provided at one side of the screw part 12a; And a driver groove (12c) provided at the other end of the screw portion (12a).
The method of claim 1,

The locking member 13 is fitted to the outer diameter of the screw portion 12a provided in the core bolt 12, and is fixed between the head portion 12b and the one end of the base bolt 11 provided in the core bolt 12. Way.
The method of claim 1,

The locking member 13 is fitted to the outer diameter of the core bolt (12), a plurality of blades (13a) made of the same body in the direction of the base bolt (11) from a single rim outer diameter or one side located on the head portion (12b) side The dog is provided radially, and one side of the base bolt (11) is provided with an expansion induction path for expanding the expansion wing (13a) to the outside when pressure is applied from the core bolt (12).
The method of claim 1,

The locking member 13 is a fixing means provided in the same radially extending wings (13a) in the outer diameter of the pair of rims provided at intervals.
The method of claim 1,

The locking member 13 is fitted to the outer diameter of the core bolt 12, the head rim 12b direction of the core bolt 12 from the single rim outer diameter or one side surface located at one end side of the base bolt 11 A plurality of extension wings (13a) made of the same body is provided radially, the one side surface of the head portion 12b of the core bolt 12 by the pressure applied between the base bolt 11 and the outer wing (13a) Fixing means provided with an expansion induction path to expand by opening.
The method according to claim 7 or 9,

The extended induction path formed at one end surface of the base bolt 11 or the head portion 12b of the core bolt 12 is a curved inclined surface in contact with the locking member 13, and the curved inclined surface is a convex inclined surface. Or a fixing means that is a concave slope or a composite thereof.
The method according to any one of claims 7 to 9,

One end of the base bolt 11 exposed to the outside of the fixed structure (1) has a hemispherical closing cap having a fastening member (15a) is opened on one side and fastened to the outer surface of the base bolt 11 in the center ( 15) fastening means fastened.
The method of claim 11,

Fixing means to which the ring member 16 is fastened to the screw through hole (11a) of the base bolt 11 is exposed to the outside of the fixing structure (1).
The method of claim 2,

The locking member 13, which has a pin shape in the outer diameter direction from the one end surface of the base bolt 11, penetrates obliquely, and approaches the base bolt 11 terminal direction through the rotational withdrawal of the core bolt 12. As the locking member 13 is pushed by the portion 12b, the locking member 13 is moved in the outer diameter direction of the base bolt 11 so as to apply a pressing force against the inner diameter of the hole 2 formed in the fixed structure 1 or the surface of the fixed structure 1. Providing fixing means.
The method of claim 13,

The head portion 12b of the core bolt 12 extends in a concave curved portion in contact with the terminal of the locking member 13, the pin-shaped locking member 13 is in contact with the head portion 12b Fixing means consisting of two spheres.
The method of claim 13,

At the end of the base bolt 11 exposed to the outside of the fixing structure 1, a fastening pin 19a provided to be fastened to the screw through hole 11a of the base bolt 11, and the fastening pin 19a are Fixing means provided with a closing cap (19) consisting of a hemispherical cover member (19b) protruding from the inner center and opened on one side to accommodate the nut (14).