A cap for grating fixing device

Abstract

The present invention relates to a cap (200) for a grating fixing member, comprising a connecting body (220) having a connecting bolt coupling part (221) that is installed on the upper part of a connecting clip (110) of a grating fixing member installed on a grating and coupled to a connecting bolt (140) of the grating fixing member, and a plurality of cap protrusions (230) spaced apart along the circumference of the connecting body (220) on the outside.

Description

Technology Field

[0001] The present invention relates to a cap for a grating fixing member, and more specifically, to a cap for a grating fixing member that is coupled to the upper part of a grating fixing member. Background Technology

[0002] Generally, grating is a general term for panels made of metal, such as steel, in a grid shape. Gratings are primarily installed on the open tops of roadway drains or can be used as walkways at various industrial sites. Gratings installed at industrial sites are placed on steel structures such as H-beams or angles and secured to the structures using separate grating fasteners.

[0003] Grating fasteners that secure gratings to H-beams or angles are manufactured in various forms to suit the site environment.

[0004] FIG. 1 is disclosed in Published Utility Model Publication No. 20-2018-0000062. The grating fixing device illustrated in FIG. 1 is composed of a connecting clip (110) that is coupled to be fitted into the upper edges of gratings that are close to each other among a plurality of gratings that are each seated on the upper side of a structure of an angle or H-beam, a fixing holder (120) located below the connecting clip (110) and having both ends bent to be coupled to the lower edges of the grating, a connecting bolt (140) coupled to pass through the connecting clip (110) and the fixing holder (120), and a clamp member (130) integrally formed with a fixing nut (135) which is coupled to pass through the end of the connecting bolt (140), has one end positioned below the fixing holder (120) and the other end bent to be supported by the structure, and has the connecting bolt (140) fastened to the lower side.

[0005] The above connecting clip (110) is composed of first and second bending portions (112A, 112B) formed at both ends and bent to wrap around the upper edge portion of the grating panel, and a connecting portion (114) assembled to connect the first and second bending portions (112A, 112B) and positioned between the grating panels. The connecting portion (114) is composed of a first connecting portion (114a) extending downward from each of the first and second bending portions (112A, 112B) to connect the first and second bending portions (112A, 112B), and a second connecting portion (114b) that horizontally connects each of the first connecting portions (114a).

[0006] In relation to the above clamp member (130), as illustrated by reference numeral 10 in the published patent application No. 10-2016-0141409, the first body (11) that is inserted into the space between the horizontal bars of the grating may be formed with a vertical cross-section in the shape of '┏┓', and may be provided in a form in which a connecting groove (12) is formed so that the side of the support frame is inserted and connected to each of the front and rear sides of the first body (11), and a first through hole (13) is formed at the upper end of the first body (11), and a fixing nut (14) to which a connecting bolt is fastened is formed on the lower side of the first through hole (13).

[0007] In addition, grating fixtures composed of clamp members of various structures are known.

[0008] The conventional grating fixing device described above had a problem in that the connecting bolt would loosen due to causes such as vibration during use, and although marking was done to check for loosening of the connecting bolt, after the grating fixing device was installed, dust such as fallen light would accumulate on the upper part of the connecting bolt between the first and second bending parts (112A, 112B) of the connecting clip (110), making it impossible to check the loosening state of the connecting bolt. Prior art literature

[0009] Republic of Korea Publication No. 20-2018-0000062 Published Utility Model Publication Republic of Korea Publication No. 10-2016-0141409 Published Patent Publication The problem to be solved

[0010] The present invention is proposed to solve the problems of the conventional technology described above, and aims to provide a cap for a grating fixing device that can be easily installed without separate equipment and prevents the loosening of the connecting bolt. means of solving the problem

[0011] For the above purpose, the present invention provides a cap for a grating fixing member, comprising: a connecting body having a connecting bolt coupling portion that is installed on the upper part of a connecting clip of a grating fixing member installed on a grating and coupled to a connecting bolt of the grating fixing member; and a plurality of cap protrusions spaced apart along the periphery on the outer side of the connecting body.

[0012] In the above, the cap projection extends radially outwardly toward the coupling body and is located between the first connecting portions of the connecting clip; and is characterized in that the distance from the center to the end of the cap projection is greater than ½ of the distance between the two first connecting portions;

[0013] In the above, the cap projections protrude radially and are provided in pairs on opposite sides of the connecting body, and the cap projections are characterized by being located between the first connecting parts in pairs on both sides in the width direction;

[0014] In the above, the distance between the two ends of the cap projection located between the first connecting parts is smaller than the distance between the first connecting parts, and

[0015] In the above, the outer surface of the coupling body between the pairs of cap protrusions on both sides is formed in an arc shape, and the distance between the outer surfaces on both sides is smaller than the distance between the first connecting parts on both sides of the connecting clip;

[0016] In the above, the angle between the cap protrusions located between the first connecting parts in pairs is smaller than the angle between the cap protrusions provided on the opposite side. Effects of the invention

[0017] The cap for the grating fixing device according to the present invention is installed on the upper part of the connecting bolt to prevent dust from accumulating on the connecting bolt, can be easily assembled without separate equipment, can be assembled at any angle regardless of the angle of the bolt diagonal passing through the hexagon when the connecting bolt is fastened, and has the effect of preventing the connecting bolt from loosening. Brief explanation of the drawing

[0018] FIG. 1 is an exploded perspective view of a conventional grating fixture, and FIG. 2 is a plan view illustrating a cap for a grating fixing device according to the present invention, and FIG. 3 is a bottom view illustrating a cap for a grating fixing device according to the present invention, and FIG. 4 is a cross-sectional view along line AA of FIG. 3, and FIG. 5 is a cross-sectional view along line BB of FIG. 3, and FIGS. 6 and 7 are plan views illustrating a state in which a cap for a grating fixing device according to the present invention is installed on the upper part of a connecting clip. FIG. 8 is a side cross-sectional view illustrating a state in which a cap for a grating fixing device according to the present invention is installed on the upper part of a connecting clip. Specific details for implementing the invention

[0019] All technical and scientific terms used in the description of the present invention, unless otherwise defined, have the meaning generally understood by those skilled in the art to which the present disclosure pertains. All terms used in the present disclosure are selected for the purpose of further clarifying the present disclosure and are not selected to limit the scope of the rights under the present disclosure.

[0020] Expressions such as "comprising," "having," "having," etc. used in the description of the present invention should be understood as open-ended terms implying the possibility of including other embodiments, unless otherwise stated in the phrase or sentence containing such expressions.

[0021] Singular expressions used in the description of the present invention may include the meaning of the plural form unless otherwise stated, and this applies likewise to singular expressions described in the claims.

[0022] Expressions such as "first," "second," etc., used in the description of the present invention are used to distinguish multiple components from one another and do not limit the order or importance of said components.

[0023] Where in the description of the present invention it is mentioned that a component is "connected" or "combined" to another component, it should be understood that the component can be directly connected or combined to the other component, or can be connected or combined through a new or different component.

[0024] The cap for the grating fixing device of the present invention will be described in detail below with reference to the attached drawings.

[0025] FIG. 2 is a plan view illustrating a cap for a grating fixing device according to the present invention, FIG. 3 is a bottom view illustrating a cap for a grating fixing device according to the present invention, FIG. 4 is a cross-sectional view along line AA of FIG. 3, FIG. 5 is a cross-sectional view along line BB of FIG. 3, FIG. 6 and FIG. 7 are plan views illustrating a state in which a cap for a grating fixing device according to the present invention is installed on the upper part of a connecting clip, and FIG. 8 is a side cross-sectional view illustrating a state in which a cap for a grating fixing device according to the present invention is installed on the upper part of a connecting clip.

[0027] In the following description, the direction perpendicular to the ground in Fig. 2 is referred to as the 'up-down direction'. Also, the vertical direction in Fig. 6 is referred to as the width direction.

[0029] A cap (200) for a grating fixing device according to the present invention is installed on the upper part of a connecting clip (110) of a grating fixing device installed on a grating. The cap (200) for the grating fixing device is installed on a connecting part (114) of a connecting clip (110) that is assembled to be positioned between grating panels. The connecting part (114) is composed of a first connecting part (114a) that extends downward facing each other and a second connecting part (114b) that horizontally connects each of the first connecting parts (114a).

[0030] The cap (200) for the grating fixing member is installed on the bolt head of a connecting bolt (140) that protrudes above the second connecting part (114b) between the first connecting parts (114a) that are spaced apart and facing each other.

[0031] The above-mentioned cap (200) for the grating fixing device comprises a connecting body (220) and a cap projection (230). The above-mentioned cap (200) for the grating fixing device may be manufactured from synthetic resin.

[0032] A connecting bolt coupling part (221) to which a connecting bolt (140) is coupled is concavely provided at the lower part of the above-mentioned coupling body (220). As shown in FIG. 3, the connecting bolt coupling part (221) is formed as a concave groove with a hexagonal cross-section. The bolt head of the connecting bolt, shown by reference numeral 30 in FIG. 1 of Published Patent Application No. 10-2016-0141409, is inserted into the connecting bolt coupling part (221) formed as a hexagonal concave groove. Reference numeral 225 shown in FIG. 3 is a downwardly concave groove formed at the center of the connecting bolt coupling part (221).

[0033] The cap projection (230) extends radially to the outside of the coupling body (220). The cap projection (230) is provided in multiple numbers spaced apart along the circumference to the outside of the coupling body (220). The cap projection (230) is provided by being coupled to the outer surface of the coupling body (220). The coupling body (220) may be provided with a connecting part (210) on its upper portion that connects the cap projections (230).

[0034] As illustrated in FIGS. 5 to 7, the cap projection (230) extends radially outward from the coupling body (220) and is located between the first connecting portion (114a) of the connecting clip (110). Since the cap projection (230) is provided in multiple numbers and extends radially outward from the coupling body (220), it is possible to connect the cap (200) for the grating fixing device to the connecting bolt (140) regardless of the direction in which the bolt head is rotated after the connecting bolt (140) is fastened.

[0035] The distance (L) from the center of the above-mentioned coupling body (220) to the end of the cap projection (230) is provided to be greater than 1 / 2 of the gap (D) between the two first connecting parts (114a). That is, the distance (L) from the center of the above-mentioned cap (200) for the grating fixing device to the end of the cap projection (230) is formed to be greater than 1 / 2 of the gap (D) between the two first connecting parts (114a) of the connecting clip (110).

[0036] The above-mentioned cap (200) for the grating fixing member has a connecting bolt coupling part (221) coupled to the bolt head of the connecting bolt (140), and the connecting body (220) and the cap projection (230) are positioned between the first connecting parts (114a) on both sides.

[0037] In the case where the connecting bolt (140) is loosened due to an impact or other reasons while the cap (200) for the grating fixing device is installed as described above, the cap (200) for the grating fixing device is coupled to the connecting bolt (140) and rotates as a whole. Since the distance (L) from the center of the cap (200) for the grating fixing device to the end of the cap projection (230) is greater than half of the gap (D) between the first connecting parts (114a) on both sides of the connecting clip (110), the cap projection (230) that rotates together with the connecting bolt (140) gets caught on the first connecting part (114a), thereby preventing the connecting bolt (140) from loosening.

[0038] The cap projections (230) are provided in pairs on opposite sides of the connecting body (220). The cap projections (230) are paired on both sides in the width direction and are located between the first connecting parts (114a). When the cap (200) for the grating fixing device according to the present invention rotates between the first connecting parts (114a), the cap projections (230) come into contact between the first connecting parts (114a) in the direction of rotation, thereby inhibiting rotation. Since a gap is also formed between the cap projections (230) that are paired and located between the first connecting parts (114a), the cap projections (230) can also deform and rotate to some extent even after contact.

[0039] The lower end of the above-mentioned coupling body (220) contacts the upper surface of the second connecting part (114b), and a gap (t2) is formed between the upper end of the bolt head and the upper end of the connecting bolt coupling part (221). Therefore, the bolt head is sufficiently inserted into the connecting bolt coupling part (221), allowing for stable installation.

[0040] The upper portion of the above-mentioned coupling body (220) is provided to have a height (H) lower than the outer upper surface of the two first connecting portions (114a), and a protrusion (226) may be formed on the upper portion of the above-mentioned coupling body (220). The manufacturer, etc., may be indicated on the upper protrusion (226) of the above-mentioned coupling body (220), and the protrusion (226) may be provided to prevent slipping, etc.

[0041] The distance between the outer surface of the coupling body (220) between the pair of cap protrusions (230) on both sides is smaller than the distance (D) between the first connecting parts (114a). Therefore, a gap (t1) is formed between the outer surface of the coupling body (220) and the first connecting parts (114a). The outer surface of the coupling body (220) between the pair of cap protrusions (230) on both sides can be formed in an arc shape. The diameter of the virtual circle formed by extending the outer surface (222) of the coupling body (220) is smaller than the distance (D) between the first connecting parts (114a).

[0042] As illustrated in FIG. 3, in the plurality of cap protrusions (230), the angle (A1) between paired cap protrusions (230) can be formed in the range of 30° to 45°. The second angle (A2), which is the angle between one of the paired cap protrusions (230) and another paired cap protrusion (230), can be formed at 150° or less.

[0043] The angle (A1) between the pair of cap protrusions (230) among the plurality of cap protrusions (230) is formed to be smaller than the second angle (A2), which is the angle between the other pair of cap protrusions (230).

[0044] To explain further, the cap protrusions (230) may be provided in pairs, and the cap protrusions (230) are provided in pairs on opposite sides, and the angle between the pair of cap protrusions (230) is formed to be smaller than the angle between the other pair of cap protrusions (230). The first angle (θ1), which is the angle between the pair of cap protrusions (230), is in the range of 30° to 45°, and the second angle (θ2), which is the angle between the other pair of cap protrusions (230), is in the range of 135° to 150°.

[0045] When the above connecting bolt (140) is fastened, if we look at one of the bolt diagonals passing through the diagonal of the hexagon, one of the bolt diagonals may be parallel to the first connecting parts (114a) on both sides of the connecting clip (110) as shown in FIG. 6, and may be tilted up to 30° with respect to the first connecting parts (114a) as shown in FIG. 7.

[0046] As shown in FIG. 6, when one of the bolt diagonals is parallel to the first connecting portions (114a) on both sides of the connecting clip (110), the end of the cap projection (230) may be provided spaced apart from the first connecting portion (114a) by a distance of t. The distance between the two ends of the cap projection (230) is smaller than the distance between the two first connecting portions (114a). When two cap projections (230) are provided between the two first connecting portions (114a), the distance between the outer ends of the two cap projections (230) is smaller than the distance between the two first connecting portions (114a), so that a gap (t) is formed between the outer ends of the cap projection (230) and the first connecting portion (114a).

[0047] And an angle (A3) is formed between the end of the cap projection (230) and the line connecting the first connecting part (114a) from the center. In the above, if the angle (A3) between the end of the cap projection (230) and the line connecting the first connecting part (114a) from the center is greater than 30°, the bolt head (B) can be connected to the connecting bolt coupling part (221) and installed regardless of the fastening rotation position of the connecting bolt (140).

[0048] In the above, since the cap projection (230) can be deformed even when the angle (A3) between the end of the cap projection (230) and the first connecting part (114a) connected from the center is, for example, in the range of 2 to 5° smaller than 30°, the bolt head can be connected to the connecting bolt coupling part (221) and installed regardless of the fastening rotation position of the connecting bolt (140).

[0049] Accordingly, the cap (200) for the grating fixing device according to the present invention can be assembled at any angle regardless of the angle of the bolt diagonal (A) passing through the diagonal of the hexagon when the connecting bolt (140) is fastened, and can prevent the connecting bolt (140) from loosening. Explanation of the symbols

[0050] 200: Cap for grating fastener 210: Cover part 220: Combined main body 230: Cap protrusion

Claims

Claim 1 A cap (200) for a grating fixing device, comprising: a connecting body (220) having a connecting bolt connecting part (221) that is installed on the upper part of a connecting clip (110) of a grating fixing device installed on a grating and coupled to a connecting bolt (140) of the grating fixing device; and a plurality of cap protrusions (230) spaced apart along the circumference of the connecting body (220); wherein the connecting bolt connecting part (221) is formed as a concave groove with a hexagonal cross-section, and the cap protrusions (230) extend radially to the outside of the connecting body (220) and are located between the first connecting parts (114a) of the connecting clip (110); and wherein the distance (L) from the center to the end of the cap protrusion (230) is greater than ½ of the gap (D) between the two first connecting parts (114a). Claim 2 A cap (200) for a grating fixing device, characterized in that, in claim 1, the upper end of the coupling body (220) is provided to have a height (H) lower than the outer upper surface of the first connecting part (114a) on both sides, and a projection (226) is formed on the upper end of the coupling body (220). Claim 3 A cap (200) for a grating fixing device, characterized in that, in claim 1, the cap projection (230) protrudes radially and is provided in pairs on opposite sides of the connecting body (220), and the cap projection (230) is positioned in pairs on both sides in the width direction between the first connecting part (114a). Claim 4 A cap (200) for a grating fixing device according to claim 3, characterized in that the distance between the two ends of the cap projection (230) located between the first connecting parts (114a) is smaller than the distance between the first connecting parts (114a). Claim 5 A cap (200) for a grating fixing device according to claim 3, wherein the outer surface of the connecting body (220) between the pairs of cap protrusions (230) on both sides is formed in an arc shape, and the distance between the outer surfaces on both sides is smaller than the distance between the first connecting parts (114a) on both sides of the connecting clip (110). Claim 6 A cap (200) for a grating fixing device, characterized in that, in claim 3, the angle between the cap protrusions (230) that form a pair and are located between the first connecting parts (114a) is smaller than the angle between the cap protrusions (230) provided on the opposite side.

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