Insert bolt having anti-turn function

Abstract

The present invention relates to an insert bolt, and more particularly, to an insert bolt having an anti-turn function, in which one-way teeth are formed on a bottom surface of a bolt head constituting the insert bolt, such that a bolt shaft can turn only in a clockwise direction when casting concrete, thereby preventing the bolt shaft from loosening from a connecting rod. The insert bolt of the present includes: a bolt shaft, a spring coupled to an outer side of the bolt shaft to perform an elastic function, a sliding movement member coupled to the outer side of the bolt shaft and coupled to a lower part of the spring to perform a sliding movement, a supporting rib member positioned in a lower part of the sliding movement member and supporting the sliding movement member and a connecting rod connected to a lower part of the bolt shaft, wherein the bolt shaft includes a disc-shaped head part, and a central shaft in a form of a circular cylinder integrally formed in a center part of the disc-shaped head part, wherein the disc-shaped head part has one-way, a lower part of the central shaft has a screw thread, and the one-way teeth includes an inclined surface and a vertical surface, such that, when an external pressure is applied due to concrete casting, the concrete casting pressure is dispersed through the inclined surface and the concrete casting pressure is aggregated through the vertical surface such that a rotating force is created only in a direction in which the bolt shaft tightens onto the connecting rod.

Claims

1. An insert bolt having an anti-turn function, the insert bolt comprising: a bolt shaft (100); a spring (200) coupled to an outer side of the bolt shaft to perform an elastic function; a sliding movement member (300) coupled to the outer side of the bolt shaft and coupled to a lower part of the spring to perform a sliding movement; a supporting rib member (400) positioned in a lower part of the sliding movement member and supporting the sliding movement member; and a connecting rod (500) connected to a lower part of the bolt shaft, wherein the bolt shaft (100) includes: a disc-shaped head part (110); and a central shaft (120) in a form of a circular cylinder integrally formed in a center part of the disc-shaped head part (110), wherein the disc-shaped head part has one-way teeth (111), a lower part of the central shaft (120) has a screw thread (121), and the one-way teeth (111) includes an inclined surface (111a) and a vertical surface (111b), such that, when an external pressure is applied due to concrete casting, the concrete casting pressure is dispersed through the inclined surface (111a) and the concrete casting pressure is aggregated through the vertical surface (111b) such that a rotating force is created only in a direction in which the bolt shaft tightens onto the connecting rod; the connecting rod (500) includes a screw thread forming section (510) and a screw non-forming section (510a) at an inner part thereof; the bolt shaft (100) further includes a concavo-convex (112) on an upper part of the disc-shaped head part (110) to increase a coupling force of concrete, and the connecting rod (500) further includes a concavo-convex (500a) at an outer side of the connecting rod (500) to increase the coupling force of the concrete; and the supporting rib member (400) includes a cylindrical fixing part (410) and a inclined panel (420) slantly installed at an outer side of the cylinder fixing part, and wherein the cylindrical fixing part (410) includes a latching protrusion (411) fixed between an inclined protrusion (120a) of the bolt shaft (100) and the connecting rod (200) to block a movement of the cylindrical fixing part along an outer side of the bolt shaft, and the inclined panel (420) includes a reinforcement member (420a) provided between the cylindrical fixing member (410) and the inclined panel to prevent the inclined panel from bending.

Description

DESCRIPTION OF DRAWINGS

(1) FIGS. 1 to 3 are views showing a configuration of an insert bolt of a related art.

(2) FIG. 4 is a view showing an entire configuration of an insert bolt according to the present invention.

(3) FIG. 5 is a front view showing the insert bolt according to the present invention.

(4) FIG. 6 is an exploded perspective view showing the insert bolt of the present invention.

(5) FIG. 7 is a partially cut-off perspective view showing the insert bolt of the present invention.

(6) FIG. 8 is an exploded cut-off perspective view showing the insert bolt of the present invention.

(7) FIG. 9 is an enlarged view showing a main part of the present invention.

(8) FIG. 10 is an enlarged view showing a head part of the insert bolt of the present invention.

(9) FIG. 11 is a view showing an example of an installation of the present invention.

BEST MODE

Mode for Invention

(10) Hereinafter, an exemplary embodiment of the present invention is described in detail with reference to the accompanying drawings. In addition, when assigning reference numbers to each element of the drawings, similar or identical elements will be assigned same reference numbers, if possible, even when the elements are displayed in a different drawing. When describing embodiment of the present invention, detailed descriptions of well-known functions and structures incorporated herein may be omitted when they make the subject matter of the present invention unclear.

(11) In addition, all terms mentioned throughout this disclosure are the defined based on the functions of what they represent in the present invention, and thus, their definitions may vary depending on user's and operator's intent or customs. Therefore, those terms should be defined based on the content of the present invention presented herein the present disclosure.

(12) FIG. 4 is a view showing an entire configuration of an insert bolt according to the present invention.

(13) FIG. 5 is a front view showing the insert bolt according to the present invention.

(14) FIG. 6 is an exploded perspective view showing the insert bolt of the present invention.

(15) FIG. 7 is a partially cut-off perspective view showing the insert bolt of the present invention.

(16) FIG. 8 is an exploded cut-off perspective view showing the insert bolt of the present invention.

(17) FIG. 9 is an enlarged view showing a main part of the present invention.

(18) FIG. 10 is art enlarged view showing a head part of the insert bolt of the present invention.

(19) FIG. 11 is a view showing an example of an installation of the present invention.

(20) The insert bolt of the present invention includes a bolt shaft 100, a spring 200, a sliding movement member 300, a supporting rib member 400 and a connecting rod 500, wherein one-way teeth are formed on one side of the bolt shaft 500.

(21) The bolt shaft 100 of the present invention includes a disc-shaped head part 110, a central shaft 120 in a form of a circular cylinder integrally formed in a center part of the disc-shaped head part, the disc-shaped head part has one-way teeth 11, and a lower part of the central shaft 120 has a screw thread 121.

(22) The one-way teeth 111 include an inclined surface 111a and a vertical surface 111b, such that, when an external force is applied to the inclined surface 111a, the force is dispersed through the inclined surface 111a, and when the external force is applied to the vertical surface 111b, the force is directly transferred to the vertical surface 111b to generate a strong rotational force.

(23) In addition, a concavo-convex 112 may be further formed on an upper pert of the disc-shaped head part 110, such that the insert bolt does not move and is easily coupled when casting concrete. In other words, to increase the coupling force of the concrete with the bolt shaft 100 during the casting of the concrete, the concavo-convex 112 is further formed on the upper part of the disc-shaped head part 110.

(24) The spring 200 is inserted into the bolt shaft 100 to perform an elastic function.

(25) The sliding movement member 300 includes a cylindrical body 310 slidably coupled to the bolt shaft and a disc 320 integrated to an outer side of the cylindrical body, wherein the cylindrical body 310 is fitted to an outer side of the bolt shaft 100 and is coupled to a lower part of the spring 200, and the disc 320 supports the spring 200 such that the outer body of the bolt shaft is fluctuated by the spring force.

(26) The supporting rib member 400 includes a cylindrical fixing part 410 and an inclined panel 420 slantly installed at an outer side of the cylindrical fixing part, wherein the supporting rib member 400 is coupled to an outer side of the bold shaft 100 and is coupled to a lower part of the disc constituting the supporting rod 300. In addition, a latching protrusion 411 is formed on the cylindrical fixing part 410 of the supporting rib member 400 and fixed in the inclined protrusion 120a between the central shaft 120 and the screw thread 121 of the bolt shaft 100, thus, the cylindrical fixing part 410 is supported by the connecting rod 500, which will be described, and made immovable and only the inclined panel 410 moves inward and outward. In addition, a reinforcement member 420a is formed between the inclined panel 420 and the cylindrical fixing part 410, so that, when the reinforcement member 420a is formed, the inclined panel 420 is blocked from bending outward, thereby enabling the inclined panel 420 to stably perform its role.

(27) The connecting rod 500 has a cylindrical shape and includes a screw thread forming section 510 inside thereof, wherein the screw part of the end part of the bolt shaft 100 is screwed to the connecting rod 500 and the supporting rib member makes close contact and is fixed to a lower end of the central shaft of the bolt shaft.

(28) The connecting rod 500 includes a concavo-convex 500a formed at an outer side thereof, so that the connecting rod 500 is more securely coupled to the concrete when casting the concrete.

(29) In addition, the connecting rod 500 includes a screw thread non-forming section 510 at an inner central part thereof to limit the coupling length of the bolt shaft 100. In other words, if the screw thread non-forming section is not formed as described above, the coupling depth of the bolt may not be limited, so the bolt shaft 100 and the connecting rod 500 are only slightly coupled or coupled too deeply such that, when another coupling unit is coupled through the lower part of the connecting rod 500, the coupling depth may not be determined, thus easily coupling the other coupling unit is difficult. However, in the present invention, because the coupling length of the bolt and the connecting rod 500 is determined and the bolt shaft 100 needs to be coupled up to the screw thread non-forming section 510a, the connection rod 500 and the bolt shaft 100 are easily coupled.

(30) Hereinafter, the assembly method of the present invention will be described.

(31) Main components of the present invention include the bolt shaft 100, the spring 200, the sliding movement member 300, the supporting rib member 400 and the connecting rod 500.

(32) In the present invention, the bolt shaft 100 is coupled to the spring 200, the supporting rod 300 is coupled to the central shaft 120 constituting the bolt shaft 100, and the sliding movement member 300 is disposed at the lower part of the spring 200.

(33) In addition, the supporting rib member 400 is coupled to the lower part of the sliding movement member 300, the cylindrical firing member 410 of the supporting rib member 400 is inserted and fixed between the central shaft 110 of the bolt shaft 100 and the connecting rod 500, and the inclined panel 420 makes close contact with the disc 320 of the sliding movement member 300.

(34) In addition, the screw thread 121 of the bolt shaft 100 is coupled to the screw thread forming section 510 formed at the inner side of the connecting rod 500, such that the bolt rod 100 is coupled to the lower end of the cylindrical fixing part 410, thereby completing the entire coupling of the present invention.

(35) Hereinafter, the operational effect of the present invention will be described.

(36) For the insert bolt of the present invention, a hole, into which the insert bolt is to be inserted, is drilled through a structure such as a steel beam, and then the insert bolt is inserted into the hole.

(37) When the insert bolt is inserted into the hole, and the supporting rib member 400 makes contact with an entrance of the hole after continuously progressing inward, the inclined panel 420 is contracted and pushed inward into the inner part of the hole, and the disc 320 of the sliding movement member 300 is disposed at the upper part of the structure such as the steel beam while pushing the spring 200 upward.

(38) In this case, the cylindrical fixing part 410 of the supporting rib member 400 inserted, coupled and fixed to the inclined protrusion 120a between the central shaft 120 of the bolt shaft 100 and the connecting rod 500, the inclined panel 420 does not move up and down and only moves inward.

(39) In addition, when the insert bole is continuously progressed inward, the insert bolt is completely inserted into the lower part of the structure such as the steel beam such that the inclined panel 420 is spread again, and the disc 320 of the sliding movement member 300 makes close contact and is supported on the upper part of the structure such as the steel beam.

(40) In this case, in the present invention, because the reinforcement member 420a is added between the inclined panel 420 and the cylindrical fixing part 410, the inclined panel maintains a spread state at a predetermined angle such that the inclined panel does not bend further.

(41) In addition, when the reinforcement member 420a is not provided, the inclined panel 420 becomes further bent when the pressure is concentrated such that the inclined panel 420 may not perform the supporting role. However, in the present invention, because the reinforcement member 420a is added, the inclined panel 420 is more strongly supported, so that the inclined panel 420 may appropriately perform its role.

(42) When the installation of the insert bolt is completed, the concrete is casted, so that she insert bolt is securely fixed to a ceiling or a wall surface.

(43) In this case, when casting the concrete, the bolt shaft 100 only moves in a tightening direction by the one-way teeth 111 of the bolt shaft 100, thus, the coupling state of the bolt shaft 100, supporting rib member 400 and the connecting rod 500 is securely maintained.

(44) In other words, when casting the concrete, the pressure is applied to the bolt shaft 100 along the casting direction of the concrete. Accordingly, because the one-way teeth 111 are formed at the lower side of the disc-shaped head part 100 constituting the bolt shaft 100, the bolt shaft 100 screwed to the connecting rod 500 is moved in the tightening direction, thus the bolt shaft 100 and the connecting rod 500 securely maintains the coupling state. In addition, because the bolt shaft 100 and the connecting rod 500 are securely coupled, the supporting rib member 400 coupled between the bolt shaft 100 and the connecting rod 500 does not move and maintains the solid coupling state.

(45) When the one-way teeth 111 of the present invention are not formed, the bolt shaft 100 may move in a loosening direction by the concrete casting pressure, and, in this case, the bolt shaft 100 becomes loose from the connecting rod 500, so the supporting rib member 400 is not fixed, thus the insert bolt is not entirely securely fixed.

(46) Therefore, in the present invention, by the one-way teeth 11, the bolt shaft 100 is moved in the tightening direction regardless of the concrete casting pressure such that the bolt shaft 100 is not released from the connecting rod. Accordingly, the supporting rib member 400 coupled between the bolt shaft 100 and the connecting rod 500 is securely coupled, so the insert bolt is not transversely or longitudinally moved, thus the insert bolt may be securely coupled to the structure such as the steel beam.

(47) In addition, the concavo-convex 112 is added on the upper part of the disc-shaped head part 110 of the bolt shaft, so the concrete makes contact with the concavo-convex 112 when casting concrete, thus the coupling force between the concrete and the bolt shaft 100 may be maximized.