Fall protection apparatus for cleanrooms

Abstract

The present invention includes a frame assembly (100) supported on a floor (1) and an expansion assembly (200) assembled at the edge of the frame assembly (100) to expand the area of ​​the frame assembly (100). It is installed in an opening where a floor is not installed during cleanroom construction, and can effectively prevent safety accidents such as a worker falling or tripping. It also includes a frame assembly supported on a floor and an expansion assembly assembled at the edge thereof, so that the area of ​​the device can be flexibly expanded or adjusted to fit the size of the opening at the installation site.

Description

Technology Field

[0001] The present invention relates to a fall prevention device for a clean room. Background Technology

[0003] When constructing a cleanroom, the floor forming the floor must be spaced apart from the upper side of the slab.

[0004] In order to separate the floor, a plurality of cylindrical post pipes are vertically arranged on the upper side of the slab, an H-beam is horizontally installed on the upper side of the post pipes, and the floor is placed on the upper side of the H-beam.

[0005] Generally, circular post pipes and H-beams are fixed on-site by welding.

[0006] However, in order to install equipment inside the cleanroom, some areas are left open without flooring for a certain period of time, and during this process, there was a problem where workers tripped or fell through the open floor. Prior art literature

[0008] Republic of Korea Registered Patent No. 10-1512457, Republic of Korea Published Patent No. 10-2010-0000615, Republic of Korea Registered Patent No. 10-2422304, Republic of Korea Published Utility Model No. 20-2010-0009384 The problem to be solved

[0009] The present invention was devised to solve the aforementioned conventional problems and aims to provide a fall prevention device for a clean room. means of solving the problem

[0011] The present invention relates to a fall prevention device for a cleanroom installed in a floor opening (4) of a cleanroom, comprising a frame assembly (100) supported on the floor (1) and an extension assembly (200) assembled on the edge of the frame assembly (100) and expanding the area of ​​the frame assembly (100).

[0012] The above frame assembly (100) may include an upper frame (110) positioned on the upper side of the floor, a lower frame (130) supported on the floor, and a connecting frame (150) connecting the upper frame (110) and the lower frame (130) in an up-and-down direction.

[0013] The upper frame (110) may include a first upper frame (111), a second upper frame (112), a third upper frame (113), and a fourth upper frame (114), and the lower frame (130) may include a first lower frame (131), a second lower frame (132), a third lower frame (133), and a fourth lower frame (134). The connecting frame (150) may include a first connecting frame (151) positioned at the front left corner, a second connecting frame (152) positioned at the rear left corner, a third connecting frame (153) positioned at the rear right corner, and a fourth connecting frame (154) positioned at the front right corner.

[0014] The above expansion assembly (200) includes a first expansion assembly (210), a second expansion assembly (220), a third expansion assembly (230), and a fourth expansion assembly (240), wherein the first expansion assembly (210) is positioned at the front and, when viewed from the top view, the second expansion assembly (220), the third expansion assembly (230), and the fourth expansion assembly (240) can be positioned clockwise around the frame assembly (100).

[0015] A fall prevention floor (10) can be mounted on the upper side of the above frame assembly (100) and expansion assembly (200). Effects of the invention

[0017] First, the present invention has the advantage of effectively preventing safety accidents such as workers falling or tripping when installed in openings where floors are not installed during cleanroom construction.

[0018] Second, the present invention includes a frame assembly supported on the floor and an extension assembly assembled at the edge thereof, which has the advantage of being able to flexibly expand or adjust the area of ​​the device to match the size of the opening at the installation site.

[0019] Third, the present invention has the advantage of being able to stably support a fall prevention floor mounted on the upper side by forming a robust support structure through an upper frame, a lower frame, and a connecting frame connecting them.

[0020] Fourth, the present invention has the advantage of increasing structural rigidity and effectively distributing the load by including a center connecting frame in the central part as well as at each corner of the frame assembly and arranging a square tube-shaped support frame at an angle.

[0021] Fifth, the present invention has the advantage of securing sufficient support and minimizing shaking even in the expanded area by configuring an inclined frame connecting the outer expansion frame and the connecting frame in the expansion assembly.

[0022] Sixth, the present invention has the advantage of enabling rapid assembly and installation according to site conditions, as the connection between each frame is facilitated through the inner assembly, outer assembly, and support assembly. Brief explanation of the drawing

[0024] FIG. 1 is an example diagram of the installation of a fall prevention device for a cleanroom according to a first embodiment of the present invention. Figure 2 is a plan view of a fall prevention device for a cleanroom shown in Figure 1. FIG. 3 is a front view of a fall prevention device for a cleanroom shown in FIG. 1. Figure 4 is a schematic diagram of the extension assembly shown in Figure 2. Figure 5 is a partial enlarged view of Figure 3. Figure 6 is a cross-sectional view cut along AA of Figure 5. Figure 7 is a cross-sectional view cut along BB of Figure 5. Figure 8 is a plan view of the fall prevention floor shown in Figure 2. FIG. 9 is a perspective view of the floor stopper shown in FIG. 8. Specific details for implementing the invention

[0025] The present invention is susceptible to various modifications and may have various embodiments; specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the invention to specific embodiments, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. Similar reference numerals have been used for similar components in the description of each drawing.

[0026] Terms such as first, second, A, B, etc., may be used to describe various components, but said components shall not be limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and / or" includes a combination of a plurality of related described items or any of a plurality of related described items.

[0027] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0028] The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "having" are intended to specify the presence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0029] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0030] In this document, "configured to" may be used interchangeably with, depending on the context, for example, in hardware or software, "suitable for," "capable of," "modified to," "made to," "capable of," or "designed to." In some situations, the expression "device configured to" may mean that the device is "capable of" doing something together with other devices or components.

[0031] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the attached drawings. In order to facilitate an overall understanding of the present invention, the same reference numerals are used for identical components in the drawings, and redundant descriptions of identical components are omitted.

[0032] FIG. 1 is an example diagram of the installation of a fall prevention device for a cleanroom according to a first embodiment of the present invention, FIG. 2 is a plan view of the fall prevention device for a cleanroom shown in FIG. 1, FIG. 3 is a front view of the fall prevention device for a cleanroom shown in FIG. 1, FIG. 4 is a schematic diagram of an expansion assembly shown in FIG. 2, FIG. 5 is a partial enlarged view of FIG. 3, FIG. 6 is a cross-sectional view cut along AA of FIG. 5, FIG. 7 is a cross-sectional view cut along BB of FIG. 5, FIG. 8 is a plan view of a fall prevention floor shown in FIG. 2, and FIG. 9 is a perspective view of a floor stopper shown in FIG. 8.

[0033] In a clean room, a floor (2) is placed on the upper side of the floor (1), and a post pipe (3) is supported on the floor (1) to support the floor (2). An opening (4) is formed in the part where the floor (2) is not installed, and the fall prevention device is installed in the opening (4).

[0034] The fall prevention device according to the present embodiment includes a frame assembly (100) supported on a floor (1) and an extension assembly (200) assembled on the edge of the frame assembly (100) and expanding the area of ​​the frame assembly (100).

[0035] A fall prevention floor (10) is mounted on the upper side of the above frame assembly (100) and expansion assembly (200), and the opening (4) can be covered to prevent a worker from falling.

[0036] The frame assembly (100) includes an upper frame (110) positioned on the upper side of the floor, a lower frame (130) supported on the floor, and a connecting frame (150) connecting the upper frame (110) and the lower frame (130) in the vertical direction.

[0037] In this embodiment, the upper frame (110) and lower frame (130) are formed in a rectangular shape when viewed from the top view.

[0038] The upper frame (110) includes a first upper frame (111), a second upper frame (112), a third upper frame (113), and a fourth upper frame (114). In this embodiment, the second upper frame (112), the third upper frame (113), and the fourth upper frame (114) are arranged clockwise with respect to the first upper frame (111), and this is merely a distinction for illustrative purposes.

[0039] The upper frame (110) further includes a first upper cross frame (121) connecting the first upper frame (111) and the third upper frame (113), and a second upper cross frame (122) connecting the second upper frame (112) and the fourth upper frame (114).

[0040] The first upper cross frame (121) and the second upper cross frame (122) are referred to as the upper cross frame (120).

[0041] The first upper cross frame (121) and the second upper cross frame (122) are arranged orthogonally, and the intersection point of the first upper cross frame (121) and the second upper cross frame (122) is placed at the center of the plane of the upper frame (110).

[0042] The lower frame (130) includes a first lower frame (131), a second lower frame (132), a third lower frame (133), and a fourth lower frame (134). In this embodiment, the second lower frame (132), the third lower frame (133), and the fourth lower frame (134) are arranged clockwise with respect to the first lower frame (131), and this is merely a distinction for illustrative purposes.

[0043] The lower frame (130) further includes a first lower cross frame (141) connecting the first lower frame (131) and the third lower frame (133), and a second lower cross frame (142) connecting the second lower frame (132) and the fourth lower frame (134).

[0044] The above first lower cross frame (141) and second lower cross frame (142) are referred to as the lower cross frame (140).

[0045] The first lower cross frame (141) and the second lower cross frame (142) are arranged orthogonally, and the intersection point of the first lower cross frame (141) and the second lower cross frame (142) is placed at the center of the plane of the lower frame (130).

[0046] The above connecting frame (150) is positioned at least four locations and is positioned at each corner of the upper frame (110) and lower frame (130). The connecting frame (150) includes a first connecting frame (151) positioned at the front left corner, a second connecting frame (152) positioned at the rear left corner, a third connecting frame (153) positioned at the rear right corner, and a fourth connecting frame (154) positioned at the front right corner.

[0047] The above connecting frame (150) further includes a center connecting frame (155) that connects and supports the upper cross frame (120) and the lower cross frame (140).

[0048] The upper end of the center connecting frame (155) is connected to the intersection point of the first upper cross frame (121) and the second upper cross frame (122), and the lower end of the center connecting frame (155) is connected to the intersection point of the first lower cross frame (141) and the second lower cross frame (142).

[0049] In this embodiment, the upper frame (110), upper cross frame (120), lower frame (130), lower cross frame (140), and connecting frame (150) are made of square tubes.

[0050] The above frame assembly (100) further includes a first support frame (161) in which the upper end is connected to the first upper frame (111) and the lower end is connected to the first connecting frame (151) and arranged at an angle; a second support frame (162) in which the upper end is connected to the first upper frame (111) and the lower end is connected to the fourth connecting frame (154) and arranged at an angle; a third support frame (163) in which the upper end is connected to the third upper frame (113) and the lower end is connected to the second connecting frame (152) and arranged at an angle; and a fourth support frame (164) in which the upper end is connected to the third upper frame (113) and the lower end is connected to the third connecting frame (153) and arranged at an angle.

[0051] The first support frame (161), second support frame (162), third support frame (163) and fourth support frame (164) are referred to as support frames (160).

[0052] Unlike the present embodiment, the support frame (160) may be additionally placed on the side of the second upper frame (112) or the third upper frame (113).

[0053] The extension assembly (200) is positioned at the edge of the frame assembly (100), and in this embodiment, is positioned at each edge of the frame assembly (100). The extension assembly (200) includes a first extension assembly (210), a second extension assembly (220), a third extension assembly (230), and a fourth extension assembly (240).

[0054] The above first expansion assembly (210), second expansion assembly (220), third expansion assembly (230), and fourth expansion assembly (240) use square tubes.

[0055] The first expansion assembly (210) is positioned at the front, and the second expansion assembly (220), the third expansion assembly (230), and the fourth expansion assembly (240) are positioned clockwise.

[0056] The structures of the first extension assembly (210), the second extension assembly (220), the third extension assembly (230), and the fourth extension assembly (240) are identical.

[0057] The first expansion assembly (210) comprises a first inner expansion frame (211) positioned opposite to the first upper frame (111), a first outer expansion frame (212) positioned on the outside opposite to the first inner expansion frame (211), a first one-sided expansion frame (213) connecting one end of the first inner expansion frame (211) and the first outer expansion frame (212), a first other-sided expansion frame (214) connecting the other end of the first inner expansion frame (211) and the first outer expansion frame (212), a first one-sided inclined frame (251) connecting and supporting the first outer expansion frame (212) and the first connecting frame (151), and a first outer expansion frame (212) connecting and supporting the fourth connecting frame (154). It includes a side inclined frame (255).

[0058] The first expansion assembly (210) further includes a first expansion support frame (218) connecting the first inner expansion frame (211) and the first outer expansion frame (212).

[0059] The second extension assembly (220) comprises a second inner extension frame (221) positioned opposite to the second upper frame (112), a second outer extension frame (222) positioned on the outside opposite to the second inner extension frame (221), a second one-sided extension frame (223) connecting one end of the second inner extension frame (221) and the second outer extension frame (222), a second other-sided extension frame (224) connecting the other end of the second inner extension frame (221) and the second outer extension frame (222), a second one-sided inclined frame (252) connecting and supporting the second outer extension frame (222) and the second connecting frame (152), and a second outer extension frame (222) connecting and supporting the second outer extension frame (222) and the first connecting frame (151). It includes a side inclined frame (256).

[0060] The second extension assembly (220) further includes a second extension support frame (228) connecting the second inner extension frame (221) and the second outer extension frame (222).

[0061] The third expansion assembly (230) comprises a third inner expansion frame (231) positioned opposite to the third upper frame (113), a third outer expansion frame (232) positioned on the outside opposite to the third inner expansion frame (231), a third one-sided expansion frame (233) connecting one end of the third inner expansion frame (231) and the third outer expansion frame (232), a third other-sided expansion frame (234) connecting the other end of the third inner expansion frame (231) and the third outer expansion frame (232), a third one-sided inclined frame (253) connecting and supporting the third outer expansion frame (232) and the third connecting frame (153), and a third outer expansion frame (232) connecting and supporting the third connecting frame (152). It includes a side inclined frame (257).

[0062] The third expansion assembly (230) further includes a third expansion support frame (238) connecting the third inner expansion frame (231) and the third outer expansion frame (232).

[0063] The above-described fourth expansion assembly (240) comprises a fourth inner expansion frame (241) positioned opposite to the fourth upper frame (114), a fourth outer expansion frame (242) positioned on the outside opposite to the fourth inner expansion frame (241), a fourth one-sided expansion frame (243) connecting one end of the fourth inner expansion frame (241) and the fourth outer expansion frame (242), a fourth other-sided expansion frame (244) connecting the other end of the fourth inner expansion frame (241) and the fourth outer expansion frame (242), a fourth one-sided inclined frame (254) connecting and supporting the fourth outer expansion frame (242) and the fourth connecting frame (154), and a fourth outer expansion frame (242) connecting and supporting the fourth connecting frame (153). It includes a side inclined frame (258).

[0064] The fourth extension assembly (240) further includes a fourth extension support frame (248) connecting the fourth inner extension frame (241) and the fourth outer extension frame (242).

[0065] The first inner extension frame (211), the second inner extension frame (221), the third inner extension frame (231), and the fourth inner extension frame (241) are called inner extension frames.

[0066] The first outer extension frame (212), the second outer extension frame (222), the third outer extension frame (232), and the fourth outer extension frame (242) are called outer extension frames.

[0067] The first side inclined frame (251), the second side inclined frame (252), the third side inclined frame (253) and the fourth side inclined frame (254), the first other side inclined frame (255), the second other side inclined frame (256), the third other side inclined frame (257) and the fourth other side inclined frame (258) are called inclined frames (250).

[0068] The first side inclined frame (251) and the first other side inclined frame (255) are referred to as the first inclined frame, the second side inclined frame (252) and the second other side inclined frame (256) are referred to as the second inclined frame, the third side inclined frame (253) and the third other side inclined frame (257) are referred to as the third inclined frame, and the fourth side inclined frame (254) and the fourth other side inclined frame (258) are referred to as the fourth inclined frame.

[0069] The fall prevention device according to the present embodiment includes an inner assembly assembly (300) that combines the frame assembly (100) and the extension assembly (200), an outer assembly assembly (500) that combines the extension assembly (200) and the inclined frame (250), and a support assembly (400) that combines the frame assembly (100) and the inclined frame (250).

[0070] The inner assembly (300) comprises a first inner assembly assembly that rotatably assembles the first expansion assembly (210) and the first upper frame (111), a second inner assembly assembly that rotatably assembles the second expansion assembly (220) and the second upper frame (112), a third inner assembly assembly that rotatably assembles the third expansion assembly (230) and the third upper frame (113), and a fourth inner assembly assembly that rotatably assembles the fourth expansion assembly (240) and the fourth upper frame (114).

[0071] The first inner assembly comprises a first one-sided inner bracket (311) positioned on one side (left side in this embodiment) of the first upper frame (111) and protruding to one edge of the first extension assembly (210), a first other-sided inner bracket (315) positioned on the other side (right side in this embodiment) of the first upper frame (111) and protruding to the other edge of the first extension assembly (210), a first one-sided rotation axis (331) for rotatably assembling the first one-sided inner bracket (311) and the first one-sided extension frame (213), and a first other-sided rotation axis (335) for rotatably assembling the first one-sided inner bracket (311) and the first other-sided extension frame (214).

[0072] The second inner assembly comprises a second one-sided inner bracket (312) positioned on one side (rear side in this embodiment) of the second upper frame (112) and protruding to one edge of the second extension assembly (220), a second other-sided inner bracket (316) positioned on the other side (front side in this embodiment) of the second upper frame (112) and protruding to the other edge of the second extension assembly (220), a second one-sided rotation axis (332) for rotatably assembling the second one-sided inner bracket (312) and the second one-sided extension frame (223), and a second other-sided rotation axis (336) for rotatably assembling the second other-sided inner bracket (316) and the second other-sided extension frame (224).

[0073] The third inner assembly comprises a third one-sided inner bracket (313) positioned on one side (right side in this embodiment) of the third upper frame (113) and protruding to one edge of the third extension assembly (230), a third other-sided inner bracket (317) positioned on the other side (left side in this embodiment) of the third upper frame (113) and protruding to the other edge of the third extension assembly (230), a third one-sided rotation axis (333) for rotatably assembling the third one-sided inner bracket (313) and the third one-sided extension frame (233), and a third other-sided rotation axis (337) for rotatably assembling the third other-sided inner bracket (317) and the third other-sided extension frame (234).

[0074] The fourth inner assembly comprises a fourth one-sided inner bracket (314) positioned on one side (front side in this embodiment) of the fourth upper frame (114) and protruding to one edge of the fourth extension assembly (240), a fourth other-sided inner bracket (318) positioned on the other side (rear side in this embodiment) of the fourth upper frame (114) and protruding to the other edge of the fourth extension assembly (240), a fourth one-sided rotation axis (334) for rotatably assembling the fourth one-sided inner bracket (314) and the fourth one-sided extension frame (243), and a fourth other-sided rotation axis (338) for rotatably assembling the fourth other-sided inner bracket (318) and the fourth other-sided extension frame (244).

[0075] The first inner assembly is assembled so as to be rotatable up and down around the first one-sided rotation axis (331) and the first other-sided rotation axis (335).

[0076] The second inner assembly is assembled so as to be rotatable up and down around the second one-sided rotation axis (332) and the second other-sided rotation axis (336).

[0077] The third inner assembly is assembled so as to be rotatable up and down around the third one-sided rotation axis (333) and the other-sided rotation axis (337).

[0078] The fourth inner assembly is assembled so as to be rotatable up and down around the fourth one-sided rotation axis (334) and the fourth other-sided rotation axis (338).

[0079] The first one-sided inner bracket (311), the second one-sided inner bracket (312), the third one-sided inner bracket (313), and the fourth one-sided inner bracket (314) are referred to as one-sided inner brackets, and the first other-sided inner bracket (315), the second other-sided inner bracket (316), the third other-sided inner bracket (317), and the fourth other-sided inner bracket (318) are referred to as other-sided inner brackets.

[0080] The first one-sided rotation axis (331), the second one-sided rotation axis (332), the third one-sided rotation axis (333), and the fourth one-sided rotation axis (334) are referred to as one-sided rotation axis, and the first other-sided rotation axis (335), the second other-sided rotation axis (336), the third other-sided rotation axis (337), and the fourth other-sided rotation axis (338) are referred to as other-sided rotation axis.

[0081] The support assembly (400) includes a first support assembly (401) which is fixed to the first connecting frame (151) and is angle-adjustable assembled with the first inclined frame and the second inclined frame, respectively; a second support assembly (402) which is fixed to the second connecting frame (152) and is angle-adjustable assembled with the second inclined frame and the third inclined frame, respectively; a third support assembly (403) which is fixed to the third connecting frame (153) and is angle-adjustable assembled with the third inclined frame and the fourth inclined frame, respectively; and a fourth support assembly (404) which is fixed to the fourth connecting frame (154) and is angle-adjustable assembled with the fourth inclined frame and the first inclined frame, respectively.

[0082] The structures of the first support assembly (401), the second support assembly (402), the third support assembly (403), and the fourth support assembly (404) are identical, but their installation directions are different. The first support assembly (401), the second support assembly (402), the third support assembly (403), and the fourth support assembly (404) are collectively referred to as the support assembly (400), and their detailed structures are described.

[0083] The support assembly (400) comprises a support housing (450) in which the connecting frame (150) is fitted at the center and which is arranged to surround the outer side of the connecting frame (150); a one-sided bracket (410) arranged to protrude outward in one direction from one side of the support housing (450); a other-sided bracket (420) arranged to protrude outward in the other direction from the other side of the support housing (450) which is orthogonal to the one-sided bracket (410); a one-sided support shaft (415) arranged to penetrate the one-sided bracket (410) and the inclined frame (250) arranged inside the one-sided bracket (410); and a other-sided support shaft (425) arranged to penetrate the other-sided bracket (420) and the inclined frame (250) arranged inside the other-sided bracket (420).

[0084] The cross-sectional area of ​​the above support housing (450) is formed in a rectangular shape.

[0085] A hollow is formed in the support housing (450), and the connecting frame (150) is inserted into the hollow and fixed. The support housing (450) and the connecting frame (150) can be welded or fastened together.

[0086] The above-mentioned one-sided bracket (410) is formed in a "U" shape. The above-mentioned one-sided bracket (410) includes a first one-sided bracket part (411) arranged to protrude in one direction, a second one-sided bracket part (412) arranged to protrude in one direction opposite to the first one-sided bracket part (411), and a connecting one-sided bracket part (413) that connects the first one-sided bracket part (411) and the second one-sided bracket part (412) and is fixed in close contact with the support housing (450).

[0087] When viewed from the top view, the above-mentioned one-sided bracket (410) is opened in one direction, and the lower side of the inclined frame (250) is inserted into the inside of the above-mentioned one-sided bracket (410) in a way that allows for angle adjustment.

[0088] The above-mentioned one-sided support shaft (415) is installed to pass through the first one-sided bracket part (411), the inclined frame (250), and the second one-sided bracket part (412). Both ends of the one-sided support shaft (415) are fixed to the first one-sided bracket part (411) and the second one-sided bracket part (412), respectively, and in this embodiment, are fixed by screw coupling through a one-sided nut (416).

[0089] The above-mentioned other bracket (420) is formed in a "U" shape. The above-mentioned other bracket (420) includes a first other bracket part (421) positioned to protrude in the other direction, a second other bracket part (422) positioned to protrude in the other direction opposite to the first other bracket part (421), and a connecting other bracket part (423) that connects the first other bracket part (421) and the second other bracket part (422) and is fixed in close contact with the other side of the support housing (450).

[0090] When viewed from the top view, the other bracket (420) is opened in the other direction, and the lower side of the inclined frame (250) is inserted into the inner side of the other bracket (420) in a way that allows for angle adjustment.

[0091] The above-mentioned other support shaft (425) is installed to pass through the first other bracket part (421), the inclined frame (250), and the second other bracket part (422). Both ends of the above-mentioned other support shaft (425) are fixed to the first other bracket part (421) and the second other bracket part (422), respectively, and in this embodiment, are fixed by screw coupling through an other nut (426).

[0092] In the case of the first support assembly (401) above, a first side inclined frame (251) is inserted into the one side bracket (410), and a second other side inclined frame (256) is inserted into the other side bracket (420).

[0093] In the case of the second support assembly (402) above, a second one-sided inclined frame (252) is inserted into the one-sided bracket (410), and a third other-sided inclined frame (257) is inserted into the other-sided bracket (420).

[0094] In the case of the third support assembly (403) above, a third one-sided inclined frame (253) is inserted into the one-sided bracket (410), and a fourth other-sided inclined frame (258) is inserted into the other-sided bracket (420).

[0095] In the case of the above-mentioned fourth support assembly (404), a fourth one-sided inclined frame (254) is inserted into the one-sided bracket (410), and a first other-sided inclined frame (255) is inserted into the other-sided bracket (420).

[0096] To explain the assembly structure of the above outer assembly assembly (500), the first one-sided extension frame (213) and the first other-sided extension frame (214) are referred to as the first extension side frame, the second one-sided extension frame (223) and the second other-sided extension frame (224) are referred to as the second extension side frame, the third one-sided extension frame (233) and the third other-sided extension frame (234) are referred to as the third extension side frame, and the fourth one-sided extension frame (243) and the first other-sided extension frame (244) are referred to as the fourth extension side frame.

[0097] The first extension side frame, the second extension side frame, the third extension side frame, and the fourth extension side frame can be referred to as extension side frames.

[0098] The outer assembly assembly (500) comprises an outer assembly housing (550) into which an outer extension frame is fitted at the center, an outer fitting part (560) that protrudes horizontally from the outer assembly housing (550) and is inserted into and coupled to the extension side frame, an outer bracket (510) that protrudes downward from the outer assembly housing (550) and is assembled to be angle-adjustable with the upper side of the inclined frame (250), and an outer support shaft (515) that is positioned to penetrate the inclined frame (250) disposed inside the outer bracket (510).

[0099] The above outer assembly housing (550) is formed of a square tube with a rectangular cross-section.

[0100] The above outer fitting part (560) is formed as a square tube with a rectangular cross-section.

[0101] The outer fitting part (560) is positioned to protrude toward the inner assembly (300).

[0102] The outer assembly housing (550) and the outer fitting part (560) are arranged orthogonally.

[0103] The outer bracket (510) is formed in a "U" shape and is open to the lower side.

[0104] The above outer bracket includes a first outer bracket part (511) positioned to protrude downward, a second outer bracket part (512) positioned to protrude downward and facing the first outer bracket part (511), and a connecting outer bracket part (513) that connects the upper ends of the first outer bracket part (511) and the second outer bracket part (512) and is fixed in close contact with the bottom surface of the outer assembly housing (550).

[0105] The outer support shaft (515) is positioned to penetrate the first outer bracket part (511), the inclined frame (250), and the second outer bracket part (512), and the inclined frame (250) is rotatably assembled with the outer support shaft (515).

[0106] In this embodiment, both ends of the outer support shaft (515) are screw-coupled through an outer nut (516) and are respectively fixed to the outer surfaces of the first outer bracket part (511) and the second outer bracket part (512).

[0107] In this embodiment, the outer assembly assembly (500) comprises: a first outer assembly assembly (501) that assembles the first outer extension frame (212), the first one-sided extension frame (213), and the first one-sided inclined frame (251); a second outer assembly assembly (502) that assembles the first outer extension frame (212), the first other-sided extension frame (214), and the first other-sided inclined frame (255); a third outer assembly assembly (503) that assembles the second outer extension frame (222), the second one-sided extension frame (223), and the second one-sided inclined frame (252); a fourth outer assembly assembly (504) that assembles the second outer extension frame (222), the second other-sided extension frame (224), and the second other-sided inclined frame (256); and the It includes a fifth outer assembly assembly (505) that assembles the third outer extension frame (232), the third one-sided extension frame (233), and the third one-sided inclined frame (253); a sixth outer assembly assembly (506) that assembles the third outer extension frame (232), the third other-sided extension frame (234), and the third other-sided inclined frame (257); a seventh outer assembly assembly (507) that assembles the fourth outer extension frame (242), the fourth one-sided extension frame (243), and the fourth one-sided inclined frame (254); and an eighth outer assembly assembly (508) that assembles the fourth outer extension frame (242), the fourth other-sided extension frame (244), and the fourth other-sided inclined frame (258).

[0108] The structure of the above-described first outer assembly (501), second outer assembly (502), third outer assembly (503), fourth outer assembly (504), fifth outer assembly (505), sixth outer assembly (506), seventh outer assembly (507), and eighth outer assembly (508) is identical to the detailed structure of the outer assembly (500) described above.

[0109] The fall prevention device for a cleanroom according to the present embodiment further includes a floor stopper (600) that penetrates the fall prevention floor (10) and forms a mutual locking in the horizontal direction with the frame assembly (100). The fall prevention floor (10) is formed of a sturdy material to withstand the weight of a worker.

[0110] The floor stopper (600) includes a stopper support member (650) supported on the upper side of the fall prevention floor (10), and a stopper column that protrudes downward from the bottom surface of the stopper support member (650) and is positioned to penetrate the fall prevention floor (10).

[0111] At least two of the above stopper columns are arranged.

[0112] In this embodiment, the stopper column includes a first stopper column (610), a second stopper column (620), a third stopper column (630), and a fourth stopper column (640).

[0113] The first stopper column (610), the second stopper column (620), the third stopper column (630), and the fourth stopper column (640) are formed in the shape of square columns.

[0114] When viewed from the top view, the first stopper column (610), the second stopper column (620), the third stopper column (630), and the fourth stopper column (640) are arranged in each quadrant based on the intersection point of the first upper cross frame (121) and the second upper cross frame (122).

[0115] In this embodiment, the first stopper column (610) is positioned on the front left side based on the intersection point of the first upper cross frame (121) and the second upper cross frame (122), the second stopper column (620) is positioned on the rear left side based on the intersection point of the first upper cross frame (121) and the second upper cross frame (122), the third stopper column (630) is positioned on the rear right side based on the intersection point of the first upper cross frame (121) and the second upper cross frame (122), and the fourth stopper column (640) is positioned on the front right side based on the intersection point of the first upper cross frame (121) and the second upper cross frame (122).

[0116] The intersection point of the first upper cross frame (121) and the second upper cross frame (122) is located between the first stopper column (610), the second stopper column (620), the third stopper column (630), and the fourth stopper column (640).

[0117] The first stopper column (610), the second stopper column (620), the third stopper column (630), and the fourth stopper column (640) form a mutual locking in the horizontal direction with the first upper cross frame (121) or the second upper cross frame (122), blocking the movement of the fall prevention floor (10), thereby preventing the opening (4) from being unintentionally opened and thus preventing the occurrence of safety accidents.

[0118] The above fall prevention floor (10) includes a first stopper hole (11) into which the first stopper column (610) is inserted, a second stopper hole (12) into which the second stopper column (620) is inserted, a third stopper hole (13) into which the third stopper column (630) is inserted, and a fourth stopper hole (14) into which the first stopper column (640) is inserted.

[0119] When viewed from the top view, the first stopper hole (11), the second stopper hole (12), the third stopper hole (13), and the fourth stopper hole (14) are formed in a rectangular shape.

[0121] Although specific embodiments have been described in the detailed description of the present invention, it is understood that various modifications are possible within the scope of the invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims set forth below as well as equivalents thereof. Explanation of the symbols

[0123] 1: Floor 2: Floor 3: Postpipe 4: Opening 10: Fall prevention floor 100: Frame Assembly 110: Upper frame 111: 1st Upper Frame 112: 2nd Upper Frame 113: 3rd Upper Frame 114: 4th Upper Frame 120: Upper Cross Frame 121: 1st Upper Cross Frame 122: 2nd Upper Cross Frame 130: Lowerframe 131: 1st Lower Frame 132: 2nd Lower Frame 133: 3rd Lower Frame 134: 4th Lower Frame 140: Lower Cross Frame 141: 1st Lower Cross Frame 142: 2nd Lower Cross Frame 150: Connection Frame 151: 1st Connection Frame 152: Second Connection Frame 153: Third Connection Frame 154: 4th Connection Frame 155: Center connecting frame 160: Support Frame 161: 1st Support Frame 162: Second Support Frame 163: Third Support Frame 164: 4th Support Frame 200: Extension Assembly 210: 1st Extension Assembly 211: 1st Inner Extension Frame 212: 1st Outer Extension Frame 213: First one-sided extension frame 214: 1st other side extension frame 218: 1st Extension Support Frame 220: Second extension assembly 221: Second inner extension frame 222: Second Outer Extension Frame 223: Second one-sided extension frame 224: Second other side extension frame 228: Second Extension Support Frame 230: Third Extension Assembly 231: 3rd Inner Extension Frame 232: The 3rd Outer Extension Frame 233: Third one-sided extension frame 234: 3rd Other Side Extension Frame 238: Third Extension Support Frame 240: 4th Extension Assembly 241: 4th Inner Extension Frame 242: 4th Outer Extension Frame 243: 4th one-sided extension frame 244: 4th other side extension frame 248: 4th Extension Support Frame 250: Inclined frame 251: First unilateral inclined frame 252: Second unilateral inclined frame 253: Third one-sided inclined frame 254: 4th one-sided inclined frame 255: 1st other side inclined frame 256: Second other side inclined frame 257: 3rd other side inclined frame 258: 4th other side inclined frame 300: Inner Assembly 400: Support Assembly 500: Outer Assembly

Claims

Claim 1 A fall prevention device for a cleanroom installed in a floor opening (4) of a cleanroom comprises a frame assembly (100) supported on a floor (1) and an expansion assembly (200) assembled on the edge of the frame assembly (100) and expanding the area of ​​the frame assembly (100); the frame assembly (100) comprises an upper frame (110) positioned on the upper side of the floor, a lower frame (130) supported on the floor, and a connecting frame (150) connecting the upper frame (110) and the lower frame (130) in an up-and-down direction; the upper frame (110) comprises a first upper frame (111), a second upper frame (112), a third upper frame (113), and a fourth upper frame (114); and the lower frame (130) comprises a first lower frame (131) and a second It includes a lower frame (132), a third lower frame (133), and a fourth lower frame (134), and the connecting frame (150) includes a first connecting frame (151) positioned at the front left corner, a second connecting frame (152) positioned at the rear left corner, a third connecting frame (153) positioned at the rear right corner, and a fourth connecting frame (154) positioned at the front right corner, and the expansion assembly (200) includes a first expansion assembly (210), a second expansion assembly (220), a third expansion assembly (230), and a fourth expansion assembly (240), wherein the first expansion assembly (210) is positioned at the front and, when viewed from a top view, the second expansion assembly (220), the third expansion assembly (230), and the fourth expansion assembly (240) are positioned around the frame assembly (100). A fall prevention floor (10) is mounted on the upper surface of the frame assembly (100) and the extension assembly (200) and is arranged clockwise, and includes a floor stopper (600) positioned at the edge of the fall prevention floor (10) to prevent movement and detachment of the fall prevention floor (10), wherein the floor stopper (600) includes a stopper support part (650) supported on the upper surface of the fall prevention floor (10), andThe structure includes a first stopper column (610), a second stopper column (620), a third stopper column (630), and a fourth stopper column (640) that protrude downward from the bottom surface of the stopper support member (650) and are arranged to penetrate the fall prevention floor (10); the fall prevention floor (10) includes a first stopper hole (11) into which the first stopper column (610) is inserted, a second stopper hole (12) into which the second stopper column (620) is inserted, a third stopper hole (13) into which the third stopper column (630) is inserted, and a fourth stopper hole (14) into which the fourth stopper column (640) is inserted; and the first stopper column (610), the second stopper column (620), the third stopper column (630), and the fourth A stopper column (640) is inserted correspondingly into the first stopper hole (11), the second stopper hole (12), the third stopper hole (13), and the fourth stopper hole (14), respectively, to prevent horizontal movement and lifting of the fall prevention floor (10), and the upper frame (110) further includes a first upper cross frame (121) connecting the first upper frame (111) and the third upper frame (113), and a second upper cross frame (122) connecting the second upper frame (112) and the fourth upper frame (114), and the first stopper column (610), the second stopper column (620), the third stopper column (630), and the fourth stopper column (640) are connected to the first upper cross frame (121) or the second upper cross frame (122) and A fall prevention device for a clean room characterized by forming mutual locking in a horizontal direction to prevent horizontal movement and upward deviation of the fall prevention floor (10). Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete

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