Expandable water blocking apparatus

Abstract

The present invention relates to an expandable water blocking apparatus comprising: a housing; a slider; a length adjustment unit; a slider control shaft; and a rotary handle unit, wherein the housing includes a first body part, a second body part, an upper panel, and a lower panel. The slider, the length adjustment unit, and the slider control shaft are accommodated in an inner space of the housing, the inner space being surrounded by the first body part, the second body part, the upper panel, and the lower panel. The slider includes: a first slider disposed to slide through one side of the housing; and a second slider disposed to slide through the other side of the housing.

Description

Extended water barrier

[0001] The present invention relates to an expandable water barrier, and more specifically, to an expandable water barrier in which multiple units can be combined appropriately according to the usage range or scale, each unit can be expanded left and right, and can withstand floods robustly.

[0002] Recently, due to climate change caused by global warming, torrential downpours during the summer have become more frequent. When such a large amount of rain falls in a short period, there is a concern that it may overwhelm sewage capacity, leading to water backflow from sewers or river flooding. In fact, in recent years, torrential downpours every summer have become a major social issue, causing not only material damage but also human casualties as building basements and roads in various parts of cities were submerged. Particularly given Korea's geographical characteristics—which consist of few flat areas and many mountains and hills—the disparity between high and lowlands is significant, resulting in frequent flood damage in low-lying areas. To address these risks, the installation of water barriers on the ground floors of buildings such as apartments and commercial complexes is increasing.

[0003] However, most current flood barriers are made of metal with bodies reaching several meters in width, making them very heavy and difficult for women or the elderly to install. Additionally, while they offer the advantage of convenient operation due to the inclusion of various automated machines, they present problems such as a complex installation process and high costs. Although such expensive flood barriers can be installed and operated without difficulty in high-end apartment complexes or luxury buildings in city centers, they are realistically difficult to install and operate in buildings with limited operating budgets or in low-cost housing.

[0004] As flood damage caused by heavy rain affects everyone regardless of wealth, the demand for water barriers that are more affordable and easy to install and use has recently been increasing significantly.

[0005] The objective of the present invention is to provide an expandable water level device that can be expanded left and right to adjust the water level range according to the situation.

[0006] The objective of the present invention is to provide an expandable water level device that can be flexibly used by installing multiple unit components and combining them appropriately according to the range or scale, and has a simple installation method.

[0007] An expandable number device according to one embodiment of the present invention comprises a housing, a slider, a length adjustment part, a slider operating shaft, and a rotary handle part. The housing comprises a first body part, a second body part, an upper panel, and a lower panel. An internal space of the housing enclosed by the first body part, the second body part, the upper panel, and the lower panel accommodates a slider, a length adjustment part, and a slider operating shaft. The slider comprises a first slider arranged to slide through one side of the housing and a second slider arranged to slide through the other side of the housing. The length adjustment part comprises a first fixing part fixed to the inner surface of the first slider and a second fixing part fixed to the inner surface of the second slider. It also includes a first arm part, one end of which is connected to the first fixing part so as to be rotatable, and a second arm part, one end of which is connected to the second fixing part so as to be rotatable. The other end of the first arm part is connected to the first rotation axis part so as to be rotatable, and the other end of the second arm part is connected to the first rotation axis part so as to be rotatable, and the other end of the first arm part and the other end of the second arm part are connected to each other through the first rotation axis part. A shaft through hole is formed in the first rotating shaft portion that communicates in the vertical direction, a female screw thread is formed on the inner surface of the shaft through hole, and a male screw thread is formed on the outer surface of the slider operating shaft, and the slider operating shaft is positioned to pass through the shaft through hole, and the rotating handle portion is connected to the upper end of the slider operating shaft, so that when the rotating handle portion is rotated, the slider operating shaft can be rotated.

[0008] In an expandable order device according to one embodiment of the present invention, the slider operating shaft includes a threaded portion having screw threads and a curved portion without screw threads, the curved portion is formed at the upper and lower portions of the slider operating shaft, the threaded portion is formed between the curved portions, the curved portion includes a donut-shaped protrusion protruding in a direction perpendicular to the outer circumference of the curved portion, and on the inner surface of the first body portion and the second body portion, a groove portion is formed in a shape corresponding to at least a part including the protrusion of the curved portion, at least a part of the curved portion is inserted into the groove portion, and the curved portion may be rotatable in place within the groove portion.

[0009] In an expandable numbering device according to an embodiment of the present invention, the length adjustment unit further comprises a third arm portion, one end of which is rotatably connected to a first fixed portion, and a fourth arm portion, one end of which is rotatably connected to a second fixed portion. The other end of the third arm portion is rotatably connected to a second rotational shaft portion, and the other end of the fourth arm portion is rotatably connected to a second rotational shaft portion. The other end of the third arm portion and the other end of the fourth arm portion are rotatably connected to each other through the second rotational shaft portion. A shaft through-hole communicating in the vertical direction is formed in the second rotational shaft portion, and a female screw thread is formed on the inner surface of the shaft through-hole. The first arm portion is connected to rotate within a predetermined acute angle range tilted upward from the first fixed portion, the second arm portion is connected to rotate within a predetermined acute angle range tilted upward from the second fixed portion, the third arm portion is connected to rotate within a predetermined acute angle range tilted downward from the first fixed portion, and the fourth arm portion is connected to rotate within a predetermined acute angle range tilted downward from the second fixed portion. there is.

[0010] In an expandable water level device according to one embodiment of the present invention, a stopper that limits the inward movement range of a slider may be formed on the inner surface of the first body part and the second body part.

[0011] An expandable leveling device according to one embodiment of the present invention further comprises an elastic band and a band fixing clip, wherein the band fixing clip comprises a first band fixing clip and a second band fixing clip, and the elastic band is arranged to wrap around the outer surface and lower surface of a first slider and the lower surface and outer surface of a second slider, one end of the elastic band is fixed to the first band fixing clip and the other end of the elastic band is fixed to the second band fixing clip, the first band fixing clip is fixed to the outer end of the upper surface of the first slider, and the second band fixing clip can be fixed to the outer end of the upper surface of the second slider.

[0012] In an expandable water level device according to one embodiment of the present invention, a bearing groove is formed on the outer lower corner of a first slider and a second slider, a cylindrical bearing is inserted into the bearing groove, and the cylindrical bearing may be arranged so that its outer surface contacts an elastic band.

[0013] An expandable water level device according to one embodiment of the present invention further includes an extension column, and on one side of the extension column, a first coupling part is formed that is detachably coupled to the outer part of a second slider, and on the other side of the extension column, a second coupling part is formed that is detachably coupled to the outer part of a first slider of another expandable water level device.

[0014] In an expandable numbering device according to one embodiment of the present invention, the screw portion includes a first screw portion penetrating a shaft penetration hole of a first rotating shaft portion and a second screw portion penetrating a shaft penetration hole of a second rotating shaft portion, and the direction of the screw thread formed in the first screw portion and the direction of the screw thread formed in the second screw portion may be opposite.

[0015] In an expandable water level device according to one embodiment of the present invention, the upper panel includes a first cut portion cut in a 'U' shape at both ends, and when the slider slides into the inside of the housing, the band fixing clip is located within the first cut portion, and the lower panel includes a second cut portion cut in a 'U' shape at both ends, and a concave guide portion is formed on the lower surface of the lower panel, and the elastic band can be inserted into the concave guide portion.

[0016] According to an embodiment of the present invention, an expandable leveling device can be provided that can be expanded left and right to adjust the leveling range according to the situation.

[0017] According to an embodiment of the present invention, an expandable water level device can be provided that can be flexibly used by installing multiple unit units and combining them appropriately according to the range or scale, and the installation method is simple.

[0018] FIG. 1 is a perspective view of an expandable water level device according to one embodiment of the present invention.

[0019] FIG. 2 is a perspective plan view of an expandable water level device according to one embodiment of the present invention.

[0020] FIG. 3 is a perspective view of the expanded state of an expandable water level device according to one embodiment of the present invention.

[0021] FIG. 4 is a partial perspective plan view of an expandable water level device assembly according to one embodiment of the present invention.

[0022] FIG. 5 is a perspective view of the expanded state of an expandable water level device according to one embodiment of the present invention.

[0023] Figure 6 is an enlarged view of area A of Figure 5.

[0024] Figure 7 is an enlarged view of area B of Figure 5.

[0025] FIG. 8 is a rear perspective view excluding some components of an expandable water level device according to one embodiment of the present invention.

[0026] Hereinafter, embodiments are described in detail with reference to the attached drawings. However, various modifications may be made to the embodiments, and thus the scope of the patent application is not limited or restricted by these embodiments. It should be understood that all modifications, equivalents, and substitutions to the embodiments are included within the scope of the rights.

[0027] Specific structural or functional descriptions of the embodiments are disclosed for illustrative purposes only and may be modified and implemented in various forms. Accordingly, the embodiments are not limited to the specific disclosed forms, and the scope of this specification includes modifications, equivalents, or substitutions that fall within the technical concept.

[0028] Terms such as "first" or "second" may be used to describe various components, but these terms should be interpreted solely for the purpose of distinguishing one component from another. For example, the first component may be named the second component, and similarly, the second component may be named the first component.

[0029] When it is stated that a component is "connected" to another component, it should be understood that it may be directly connected to or joined to that other component, or that there may be other components in between.

[0030] The terms used in the embodiments are for illustrative purposes only and should not be interpreted as intended to be limiting. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprising" or "having" are intended to indicate the existence 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.

[0031] 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 embodiments pertain. 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.

[0032] In addition, when describing with reference to the attached drawings, identical components are assigned the same reference numeral regardless of drawing symbols, and redundant descriptions thereof are omitted. In describing the embodiments, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of the embodiments, such detailed description is omitted.

[0033] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims.

[0034] In the embodiments of the present invention, 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 the embodiments of the present invention.

[0035] The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining embodiments of the present invention are exemplary, and therefore the present invention is not limited to the depicted details. Furthermore, in describing the present invention, if it is determined that a detailed description of related known technology may unnecessarily obscure the essence of the present invention, such detailed description is omitted. Where terms such as "includes," "has," or "is made up" are used in this specification, other parts may be added unless "only" is used. Where a component is expressed in the singular, it includes cases where it includes the plural unless specifically stated otherwise.

[0036] In interpreting the components, they are interpreted to include a margin of error even in the absence of a separate explicit statement.

[0037] In the case of describing a positional relationship, for example, when the positional relationship between two parts is described using expressions such as 'on,' 'upper,' 'lower,' or 'next to,' one or more other parts may be located between the two parts unless 'immediately' or 'directly' is used.

[0038] When elements or layers are referred to as "on" another element or layer, this includes cases where another layer or element is placed directly on top of or in between. Throughout the specification, the same reference numerals refer to the same components.

[0039] The size and thickness of each component shown in the drawings are illustrated for convenience of explanation, and the present invention is not necessarily limited to the size and thickness of the illustrated components.

[0040] The features of each of the various embodiments of the present invention may be combined or combined with one another, either partially or wholly, and as will be fully understood by those skilled in the art, various technical interlocking and operation are possible, and each embodiment may be implemented independently of one another or together in an interlocking relationship.

[0041] FIG. 1 is a perspective view of an expandable water level device according to one embodiment of the present invention. FIG. 2 is a perspective plan view of an expandable water level device according to one embodiment of the present invention.

[0042] Words indicating directions such as below, up, down, left, right, outer side, inner side, etc. are based on the plan view of FIG. 2.

[0043] An expandable water level device according to one embodiment of the present invention may include a housing (10), a slider (20), a length adjustment part (30), a slider operating shaft (40), and a rotating handle part (50).

[0044] In one embodiment, the housing (10) may include a first body part (11a), a second body part (11b), an upper panel (12), and a lower panel (13). The first body part (11a) and the second body part (11b) may correspond to the front and rear parts of the housing (10), respectively. The upper panel (12) and the lower panel (13) may correspond to the upper and lower parts of the housing (10), respectively. The space enclosed by the first body part (11a), the second body part (11b), the upper panel (12), and the lower panel (13) may form the internal space of the housing (10).

[0045] In one embodiment, a slider (20), a length adjustment part (30), and a slider operating shaft (40) may be accommodated in the internal space of a housing (10) surrounded by a first body part (11a), a second body part (11b), an upper panel (12), and a lower panel (13).

[0046] In one embodiment, the slider (20) may include a first slider (20a) arranged to slide through one side of the housing (10) and a second slider (20b) arranged to slide through the other side of the housing (10). In this case, the one side of the housing (10) may refer to the left side of the housing (10). Also, the other side of the housing (10) may refer to the right side of the housing (10). Alternatively, the one side and the other side of the housing (10) may refer to the right side and the left side of the housing (10), respectively. As long as the one side and the other side are in opposite directions, the order of left and right may be reversed.

[0047] FIG. 3 is a perspective view of the expanded state of an expandable water level device according to one embodiment of the present invention.

[0048] The slider (20) is normally housed entirely within the housing (10), but can be slid to both sides and at least a portion of it can protrude outside the housing (10), thereby extending the degree range in the horizontal direction.

[0049] In one embodiment, a stopper (112) that limits the inward movement range of the slider (20) may be formed on the inner surface of the first body part (11a) and the second body part (11b). Two stoppers (112) may be formed, one that limits the movement range of the first slider (20a) and one that limits the movement range of the second slider (20b). The stopper (112) may be formed in a planar shape facing the inner surface of the first slider (20a) or the second slider (20b), and when the inner surface of the first slider (20a) and the second slider (20b) comes into contact with the stopper (112), movement into the housing (10) is restricted. By this, the inward movement range of the slider (20) may be limited.

[0050] In one embodiment, the expandable saturation device may further include an elastic band (61) and a band fixing clip (62). The elastic band (61) may be a band having elasticity and elasticity. The elastic band (61) may be positioned to wrap around the outer and lower surfaces of the first slider (20a) and the lower and outer surfaces of the second slider (20b). The band fixing clip (62) may include a first band fixing clip (62a) and a second band fixing clip (62b). The first band fixing clip (62a) may be fixed to the outer end of the upper surface of the first slider (20a), and the second band fixing clip (62b) may be fixed to the outer end of the upper surface of the second slider (20b). One end of the elastic band (61) may be fixed to the first band fixing clip (62a), and the other end of the elastic band (61) may be fixed to the second band fixing clip (62b). The way the elastic band (61) is secured to the band fixing clip (62) may be by snap-fit ​​fixing or any other method.

[0051] In one embodiment, the upper panel (12) may include a first cut portion (121) that is cut in a 'U' shape at both ends. Additionally, when the slider (20) is slid into the inside of the housing (10), the band fixing clip (62) may be positioned within the first cut portion (121).

[0052] In one embodiment, when the slider (20) slides and extends in the direction of both sides of the housing (10) by the length adjustment unit (30) (the operating principle of the length adjustment unit (30) will be described later), the elastic band (61) can apply an elastic force to the slider (20) in the direction of the inner side of the housing (10) while tensioning. When the tensioned length of the elastic band (61) is not long, the elastic force is weak, so the extension of the slider (20) can continue. However, when the elastic band (61) is tensioned beyond a predetermined length and the elastic force exceeds a predetermined value, the sliding of the slider (20) stops due to the elastic force. That is, the extension range of the slider (20) can be limited by the elastic force of the elastic band (61).

[0053] FIG. 4 is a partial perspective plan view of an expandable water level device assembly according to one embodiment of the present invention.

[0054] An expandable water level device according to one embodiment of the present invention may further include an extension column (70). The expandable water level device may be combined in series with another expandable water level device through the extension column (70) to form an expandable water level device assembly.

[0055] In one embodiment, a first coupling part (71) is formed on one side of the extension column (70) so as to be detachably coupled to the outer part of the second slider (20b), and a second coupling part (72) is formed on the other side of the extension column (70) so as to be detachably coupled to the outer part of the first slider (20a) of another extension type numbering device. At this time, the detachable coupling between the outer part of the second slider (20b) and the first coupling part (71) or between the outer part of the first slider (20a) and the second coupling part (72) may be a snap-fit ​​coupling, but any other coupling method is acceptable as long as it is a detachable method.

[0056] According to the above-described embodiment, a plurality of expandable ordering devices can be combined to easily secure the required ordering range.

[0057] Next, the structure and principle of the length adjustment unit (30) will be explained with reference to FIGS. 5 and 6.

[0058] FIG. 5 is a perspective view of an expanded state of an expandable water level device according to one embodiment of the present invention. FIG. 6 is an enlarged view of area A of FIG. 5.

[0059] In an extendable length adjustment device according to one embodiment of the present invention, the length adjustment unit (30) may include a first fixing unit (31a) fixed to the inner surface of a first slider (20a) and a second fixing unit (31b) fixed to the inner surface of a second slider (20b). At this time, the inner surface of the first slider (20a) refers to the side of the first slider (20a) that is closer to the inner side of the housing (10) among the two sides of the first slider (20a). The inner surface of the second slider (20b) has the same meaning. Meanwhile, the length adjustment unit (30) may include a first arm (32a) with one end connected so as to be rotatable with respect to the first fixing unit (31a) and a second arm (32b) with one end connected so as to be rotatable with respect to the second fixing unit (31b). The other end of the first arm (32a) is connected so as to be rotatable with respect to the first rotational axis (33a), and the other end of the second arm (32b) can be connected so as to be rotatable with respect to the first rotational axis (33a).

[0060] The first rotational shaft portion (33a) may have a cylindrical shape extending in a direction perpendicular to the front and rear of the housing (10). Additionally, a protruding rotational shaft (330) may be formed on the front and rear of the first rotational shaft portion (33a). Meanwhile, a coupling member (320) that engages with the rotational shaft (330) protruding from the front and rear of the first rotational shaft portion (33a) may be formed at the other end of the first arm portion (32a) and the other end of the second arm portion (32b), and the coupling member (320) and the rotational shaft (330) may be coupled so as to be rotatable relative to each other. Accordingly, the other end of the first arm portion (32a) and the other end of the second arm portion (32b) may be connected so as to be rotatable relative to each other through the first rotational shaft portion (33a).

[0061] In one embodiment, the first arm (32a) is connected to rotate within a predetermined acute angle range tilted upward from the first fixed part (31a), and the second arm (32b) is connected to rotate within a predetermined acute angle range tilted upward from the second fixed part (31b). That is, when the other end of the first arm (32a) and the second arm (32b) and the first rotation axis part (33a) move upward, the first arm (32a) and the second arm (32b) fold, causing the slider (20) to enter the housing (10), and when the other end of the first arm (32a) and the second arm (32b) and the first rotation axis part (33a) move downward, the first arm (32a) and the second arm (32b) unfold, pushing the slider (20) outward to both outer parts, thereby expanding the structure.

[0062] In one embodiment, a shaft penetration hole (34) communicating in the vertical direction may be formed in the first rotational shaft portion (33a). Additionally, female screw threads may be formed on the inner surface of the shaft penetration hole (34).

[0063] In one embodiment, the slider operating shaft (40) may include a threaded portion (41) and a non-threaded curved portion (42). In this case, the threads formed on the threaded portion (41) may be male threads. The curved portion (42) may be formed at the upper and lower ends of the slider operating shaft (40), and the threaded portion (41) may be formed between the curved portions (42).

[0064] In one embodiment, the threaded portion (41) of the slider operating shaft (40) may be positioned to pass through the shaft through hole (34), and the male thread formed on the outer surface of the threaded portion (41) may engage with the female thread formed on the inner surface of the shaft through hole (34).

[0065] According to the above configuration, when the slider operating shaft (40) rotates, the male screw thread formed on the outer surface of the screw portion (41) and the female screw thread formed on the inner surface of the shaft through hole (34) are engaged while rotating, allowing for relative up-and-down movement. Since the slider operating shaft (40) rotates in place while its position is fixed, the first rotational shaft portion (33a) in which the shaft through hole (34) is formed eventually moves up and down relative to the slider operating shaft (40). When the first rotational shaft portion (33a) moves up and down, the other ends of the first arm portion (32a) and the second arm portion (32b) connected to the first rotational shaft portion (33a) also move up and down together. By doing so, the folding or unfolding motion of the first arm portion (32a) and the second arm portion (32b) can be controlled.

[0066] In one embodiment, the rotary handle portion (50) may be connected to the upper end of the slider operating shaft (40). When the rotary handle portion (50) is rotated, the slider operating shaft (40) is rotated, and the movement of the slider (20) can be controlled by operating the length adjustment portion (30) including the first arm portion (32a) and the second arm portion (32b).

[0067] In one embodiment, the length adjustment unit (30) may further include a third arm (32c) with one end rotatably connected to a first fixed unit (31a) and a fourth arm (32d) with one end rotatably connected to a second fixed unit (31b). The other end of the third arm (32c) may be rotatably connected to a second rotation axis unit (33b), and the other end of the fourth arm (32d) may be rotatably connected to a second rotation axis unit (33b). Additionally, the other end of the third arm (32c) and the other end of the fourth arm (32d) may be rotatably connected to each other through the second rotation axis unit (33b).

[0068] The second rotational shaft portion (33b) may have a cylindrical shape extending in a direction perpendicular to the front and rear of the housing (10). Additionally, a protruding rotational shaft (330) may be formed on the front and rear of the second rotational shaft portion (33b). Meanwhile, a coupling member (320) that engages with the rotational shaft (330) protruding from the front and rear of the second rotational shaft portion (33b) may be formed at the other end of the third arm portion (32c) and the other end of the fourth arm portion (32d), and the coupling member (320) and the rotational shaft (330) may be coupled so as to be rotatable relative to each other. Accordingly, the other end of the third arm portion (32c) and the other end of the fourth arm portion (32d) may be connected so as to be rotatable relative to each other through the second rotational shaft portion (33b).

[0069] In one embodiment, the third arm (32c) is connected to rotate within a predetermined acute angle range tilted downward from the first fixed part (31a), and the fourth arm (32d) can be connected to rotate within a predetermined acute angle range tilted downward from the second fixed part (31b). That is, when the other ends of the third arm (32c) and the fourth arm (32d) and the second rotation axis part (33b) move downward, the third arm (32c) and the fourth arm (32d) fold, causing the slider (20) to enter the housing (10), and when the other ends of the third arm (32c) and the fourth arm (32d) and the second rotation axis part (33b) move upward, the third arm (32c) and the fourth arm (32d) unfold, pushing the slider (20) outward to both outer parts, thereby expanding the structure.

[0070] In one embodiment, a shaft penetration hole (34) may be formed in the second rotating shaft portion (33b) that is connected in the vertical direction and has female screw threads formed on its inner surface.

[0071] In one embodiment, the screw portion (41) may include a first screw portion (41a) penetrating the shaft penetration hole (34) of the first rotational shaft portion (33a) and a second screw portion (41b) penetrating the shaft penetration hole (34) of the second rotational shaft portion (33b). In this case, the direction of the screw thread formed on the first screw portion (41a) and the direction of the screw thread formed on the second screw portion (41b) may be opposite.

[0072] According to this configuration, when the slider operating shaft (40) rotates, the first rotational shaft portion (33a) and the second rotational shaft portion (33b) move up and down in opposite directions. For example, when the slider operating shaft (40) rotates clockwise, if the first rotational shaft portion (33a) moves upward, the second rotational shaft portion (33b) moves downward, and if the first rotational shaft portion (33a) moves downward, the second rotational shaft portion (33b) moves upward. Accordingly, when the first arm (32a) and the second arm (32b), configured to rotate within a predetermined acute angle range tilted upward, are operated to be folded, the third arm (32c) and the fourth arm (32d), configured to rotate within a predetermined acute angle range tilted downward, are also operated to be folded; conversely, when the arm (32a) and the second arm (32b) are operated to be unfolded, the third arm (32c) and the fourth arm (32d) are also configured to be unfolded, thereby allowing for easy control of the horizontal movement of the slider (20). At this time, the vertical movement range of the first rotation axis part (33a) is limited to the area between the boundary of the first screw part (41a) and the second screw part (41b) and the curved surface part (42) formed on the upper side. Additionally, the vertical movement range of the second rotational axis (33b) is limited to the area between the boundary between the first screw portion (41a) and the second screw portion (41b) and the curved surface portion (42) formed at the bottom. As a result, the range in which the first to fourth arms are folded or unfolded is limited, and consequently, the range in which the slider (20) can move in the horizontal direction is limited.

[0073] Figure 7 is an enlarged view of area B of Figure 5.

[0074] In an expandable water level device according to one embodiment of the present invention, the curved portion (42) may include a donut-shaped protrusion (43) protruding in a direction perpendicular to its outer surface.

[0075] In one embodiment, a groove (111) may be formed on the inner surface of the first body part (11a) and the second body part (11b) in a shape corresponding to at least a portion including a protrusion (43) of the curved part (42).

[0076] In one embodiment, at least a portion including a protrusion (43) of the curved portion (42) is inserted into the groove (111), and the curved portion (42) may be configured to be rotatable in place within the groove (111).

[0077] With the above configuration, the slider operating shaft (40) can be fixed so that it rotates in place without moving up and down or left and right.

[0078] FIG. 8 is a rear perspective view excluding some components of an expandable water level device according to one embodiment of the present invention.

[0079] In an expandable water level device according to one embodiment of the present invention, a bearing groove (21) may be formed on the outer lower corners of the first slider (20a) and the second slider (20b). Additionally, a cylindrical bearing (22) may be inserted into the bearing groove (21).

[0080] In one embodiment, the cylindrical bearing (22) may be positioned so that its outer surface contacts the elastic band (61). By doing so, pressure can be dispersed through the cylindrical bearing (22) while making smooth contact, rather than being concentrated on a specific part of the elastic band (61) (particularly the lower edge of the slider (20)). In other words, damage to the durability of the elastic band (61) can be reduced. Additionally, as the elastic band (61) expands and contracts while in contact with the rotatable curved surface of the cylindrical bearing (22), elasticity is uniformly distributed across the entire elastic band (61), thereby maintaining stable function.

[0081] In one embodiment, the lower panel (13) may include a second cut portion (131) that is cut in a 'U' shape at both ends. Additionally, a concave guide portion (132) may be formed on the lower surface of the lower panel (13). An elastic band (61) may be inserted into the concave guide portion (132). By doing so, the elastic band (61) can function stably without deviating from a predetermined position.

[0082] Although embodiments of the present invention have been described in more detail with reference to the attached drawings, the present invention is not necessarily limited to these embodiments and may be modified in various ways within the scope of the technical spirit of the present invention. Accordingly, the embodiments disclosed in the present invention are intended to explain, not limit, the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of protection of the present invention shall be interpreted by the claims below, and all technical spirits within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention.

[0083] Therefore, other implementations, other embodiments, and equivalents to the claims also fall within the scope of the claims set forth below.

Claims

1. Includes a housing (10), a slider (20), a length adjustment part (30), a slider operating shaft (40), and a rotating handle part (50), The above housing (10) includes a first body part (11a), a second body part (11b), an upper panel (12) and a lower panel (13). In the internal space of the housing (10) surrounded by the first body part (11a), the second body part (11b), the upper panel (12), and the lower panel (13), the slider (20), the length adjustment part (30), and the slider operating shaft (40) are accommodated. The above slider (20) includes a first slider (20a) arranged to slide through one side of the housing (10) and a second slider (20b) arranged to slide through the other side of the housing (10). The above length adjustment unit (30) includes a first fixing part (31a) fixed to the inner surface of the first slider (20a), a second fixing part (31b) fixed to the inner surface of the second slider (20b), a first arm part (32a) connected so as to be rotatable with respect to the first fixing part (31a), and a second arm part (32b) connected so as to be rotatable with respect to the second fixing part (31b). The other end of the first arm (32a) is connected so as to be rotatable with respect to the first rotational shaft (33a), and the other end of the second arm (32b) is connected so as to be rotatable with respect to the first rotational shaft (33a), and the other end of the first arm (32a) and the other end of the second arm (32b) are connected so as to be rotatable with respect to each other through the first rotational shaft (33a). A shaft through hole (34) communicating in the vertical direction is formed in the first rotating shaft portion (33a), and a female screw thread is formed on the inner surface of the shaft through hole (34). Male screw threads are formed on the outer surface of the slider operating shaft (40), and the slider operating shaft (40) is positioned to pass through the shaft penetration hole (34). The above-mentioned rotary handle portion (50) is connected to the upper end of the slider operating shaft (40), and when the rotary handle portion (50) is rotated, the slider operating shaft (40) is rotated. Extended water level device.

2. In Paragraph 1, The above slider operating shaft (40) includes a threaded portion (41) and a curved portion (42) without threads. The above curved portion (42) is formed at the upper and lower portions of the slider operating shaft (40), and the above screw portion (41) is formed between the above curved portions (42). The above curved portion (42) includes a donut-shaped protrusion (43) that protrudes in a direction perpendicular to the outer circumference of the above curved portion (42), and On the inner surface of the first body part (11a) and the second body part (11b), a groove (111) is formed in a shape corresponding to at least a portion including the protrusion (43) of the curved surface part (42), and At least a portion including the protrusion (43) of the curved portion (42) is inserted into the groove (111), and the curved portion (42) is rotatable in place within the groove (111). Extended water level device.

3. In Paragraph 2, The above length adjustment unit (30) further includes a third arm (32c) with one end connected so as to be rotatable with respect to the first fixing unit (31a), and a fourth arm (32d) with one end connected so as to be rotatable with respect to the second fixing unit (31b). The other end of the third arm (32c) is connected so as to be rotatable with respect to the second rotational shaft (33b), and the other end of the fourth arm (32d) is connected so as to be rotatable with respect to the second rotational shaft (33b), and the other end of the third arm (32c) and the other end of the fourth arm (32d) are connected so as to be rotatable with respect to each other through the second rotational shaft (33b). A shaft through hole (34) communicating in the vertical direction is formed in the second rotating shaft portion (33b), and a female screw thread is formed on the inner surface of the shaft through hole (34). The first arm (32a) is connected to rotate within a predetermined acute angle range tilted upward from the first fixed part (31a), the second arm (32b) is connected to rotate within a predetermined acute angle range tilted upward from the second fixed part (31b), the third arm (32c) is connected to rotate within a predetermined acute angle range tilted downward from the first fixed part (31a), and the fourth arm (32d) is connected to rotate within a predetermined acute angle range tilted downward from the second fixed part (31b). Extended water level device.

4. In Paragraph 1, A stopper (112) is formed on the inner surface of the first body part (11a) and the second body part (11b) to limit the inward movement range of the slider (20). Extended water level device.

5. In Paragraph 1, It further includes an elastic band (61) and a band fixing clip (62), The above band fixing clip (62) includes a first band fixing clip (62a) and a second band fixing clip (62b), and The elastic band (61) is positioned to wrap around the outer and lower surfaces of the first slider (20a) and the lower and outer surfaces of the second slider (20b), and One end of the elastic band (61) is fixed to the first band fixing clip (62a), and the other end of the elastic band (61) is fixed to the second band fixing clip (62b). The first band fixing clip (62a) is fixed to the outer end of the upper surface of the first slider (20a), and the second band fixing clip (62b) is fixed to the outer end of the upper surface of the second slider (20b). Extended water level device.

6. In Paragraph 5, A bearing groove (21) is formed on the outer lower corner of the first slider (20a) and the second slider (20b), and A cylindrical bearing (22) is inserted into the bearing groove (21), and The above cylindrical bearing (22) is positioned so that its outer surface contacts the elastic band (61). Extended water level device.

7. In Paragraph 1, It further includes an extension column (70), On one side of the extension column (70), a first coupling part (71) is formed that is detachably coupled to the outer part of the second slider (20b), and On the other side of the above extension column (70), a second coupling part (72) is formed that is detachably coupled to the outer part of the first slider (20a) of another extension type water level device. Extended water level device.

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