Fall prevention safety devices

Abstract

The fall prevention safety device according to the embodiment of the present invention is securely fixed and fastened with a wire, thereby effectively preventing worker falls. Furthermore, it can be easily attached to and detached from the wire in the work environment, improving work efficiency and preventing potential safety accidents that may occur during operation. A fall prevention safety device according to an embodiment of the present invention may include a main body portion including a first frame attached to a wire and positioned on one side of the wire, and a second frame connected to the first frame and configured to surround one side of the wire; a clamp portion connected to the first frame and positioned on one side of the wire and movable toward the wire; an operating portion connected to the first frame and pressing the clamp portion toward the wire; and an engaging portion that supports one side of the clamp portion so that the wire is positioned between the second frame and the clamp portion, or moves the clamp portion away from the wire.

Description

Technical Field

[0001] The present invention relates to a safety device for preventing falls that can be used to ensure the safety of workers. More specifically, it relates to a safety device for preventing falls that is configured to prevent a worker from falling when ascending and descending along a vertical lifeline during work at heights.

Background Art

[0002] In construction sites and industrial sites, various types of safety devices are used to prevent safety accidents of workers. In particular, when working at heights, workers are required to wear specific devices to prevent falls during such high-altitude work. According to Article 371 of the safety regulations, working at heights is highly dangerous and can easily lead to fatal accidents, so the use of safety devices to prevent falls is one of the essential requirements to be observed at the work site.

[0003] As an example of a device for preventing falls, a configuration in which a fixing device is installed at a specific position within the work area and a flexible wire is connected to the fixing device is known. Through this wire, workers can freely move up and down within the work area. When a fall occurs during work, a safety device connected to the worker's body engages and is fixed to the wire, preventing the worker from falling further.

[0004] For example, a clamp structure that tightens and fixes a wire arranged along the work area may be used when a worker falls. However, in such a safety device equipped with a clamp mechanism, there may be problems such as insufficient tightening force of the device, a risk that the worker may fall, or the safety device may come off the wire, requiring the worker to recheck or reattach the device during work.

[0005] Therefore, there is a need for a safety device that can securely hold a worker with a stronger clamping force in the event of a fall, and that can easily engage or disengage the safety device from wires and other surrounding structures at the work site.

[0006] In this regard, Korean Patent Publication No. 10-2022-0112148 discloses a fall protection belt equipped with a hook. The invention disclosed in this publication relates to a hook for working at heights and a fall protection belt worn by workers when working at heights in construction sites and industrial sites, with the aim of ensuring safety during work. [Overview of the project] [Problems that the invention aims to solve]

[0007] One of the objectives of the present invention is to provide a fall prevention safety device that securely fastens a worker by a wire in the event of a fall.

[0008] Another object of the present invention is to provide a fall prevention safety device that allows workers to easily engage or disengage the safety device from a wire in a working environment.

[0009] Furthermore, another object of the present invention is to provide a fall prevention safety device that, by making one side of the frame surrounding the wire an open structure, allows the wire to pass smoothly through the frame without interference when it is connected to a specific structure such as a power transmission tower, as the intermediate support portion that forms the connection point does not interfere with the wire. [Means for solving the problem]

[0010] According to one embodiment of the present invention, a fall prevention safety device includes a main body installed on a wire, the main body comprising a first frame located on one side of the wire and a second frame connected to the first frame and surrounding one side of the wire. The device may also include a clamping part located on one side of the wire and movable toward the wire, an operating part connected to the first frame and pressing the clamping part toward the wire, and an engaging part that supports one side of the clamping part so that the wire is positioned between the second frame and the clamping part, or moves the clamping part toward the outside of the wire.

[0011] The first frame includes a through-hole, a portion of the clamping portion may pass through the clamping hole, and the clamping portion may be movable along the clamping hole.

[0012] The clamping portion may include a clamping body located on one side of the wire and movable toward the wire, and a clamping pin that protrudes from the clamping body and passes through a clamping hole.

[0013] The operating part presses the tightening pin, allowing the tightening part to move along the tightening hole.

[0014] The engaging portion supports one side of the tightening pin, thereby maintaining the distance between the second frame and the tightening body.

[0015] The operating part may include an operating body that rotates around a pivot point connected to the first frame.

[0016] The operating body includes an operating groove recessed to receive a portion of the clamping portion, and can press a portion of the clamping portion through the operating groove.

[0017] The first frame includes a through-hole, and the clamping portion includes a clamping body located on one side of the wire and movable toward the wire, and a clamping pin protruding from the clamping body and passing through the clamping hole, and the clamping portion can be pressed toward the wire by the clamping pin inserted into the operating groove.

[0018] The actuating part may further include a rotating elastic member disposed at the connecting portion between the actuating body and the first frame, and the rotating elastic member may be configured to rotate the actuating body.

[0019] The rotating elastic member can rotate the actuating body by elastic deformation.

[0020] The actuating body may be rotatable in a direction inserted inside the first frame.

[0021] The first frame may include a tightening hole formed therethrough in parallel with the rotation path of the actuating body.

[0022] The first frame includes an engaging hole formed therethrough, and a part of the engaging portion penetrates the engaging hole, and the engaging portion may be movable along the engaging hole.

[0023] The first frame may include a first tightening hole formed therethrough along the movement path of the actuating part, and a second tightening hole formed therethrough in a direction parallel to the first tightening hole.

[0024] The tightening part may include a tightening body located on one side of the wire and movable toward the wire, a first tightening pin protruding from the tightening body and penetrating the first tightening hole, and a second tightening pin protruding from the tightening body and penetrating the second tightening hole.

[0025] The engaging part may include a first engaging part in contact with the first tightening pin and a second engaging part in contact with the second tightening pin.

[0026] The engaging hole may include a first engaging hole through which a part of the first engaging part penetrates and a second engaging hole through which a part of the second engaging part penetrates.

[0027] The first engaging part may include a first support surface supporting the first tightening pin, a first engaging body located outside the first frame, and a first engaging pin protruding from the first engaging body and penetrating the first engaging hole.

[0028] The first engaging portion further includes a compression elastic member having one end fixed to the first frame and the other end connected to the first engaging pin, and the compression elastic member is elastically deformable. When the first engaging pin moves along the first engaging hole by the elastic force of the compression elastic member, the first support surface may be detached from the first tightening pin.

[0029] The first engaging hole may include a portion formed to penetrate along the longitudinal direction of the wire and a portion formed to penetrate along the direction in which the compression elastic member elastically deforms.

[0030] The first engaging body may further include a pressing surface that presses the first tightening pin when the first engaging pin moves along the first engaging hole.

[0031] The second engaging portion may include a second support surface that supports the second tightening pin, a second engaging body located outside the first frame, and a second engaging pin that protrudes from the second engaging body and penetrates the second engaging hole.

[0032] <​​​​​​​​​​​​​​​According to a preferred embodiment of the present invention, a fall prevention safety device can be easily engaged with or disengaged from a wire in the work environment, thereby improving work efficiency and preventing potential safety accidents that may occur during operation.

[0036] According to another preferred embodiment of the present invention, since one side of the frame surrounding the wire is open, the wire can pass smoothly through an intermediate support section, which is a connection point to a specific structure such as a power transmission tower, without interference.

[0037] In addition to the effects described above, other advantages that can be easily predicted by those skilled in the art can also be obtained from the configuration of the preferred embodiment of the present invention. [Brief explanation of the drawing]

[0038] The accompanying drawings illustrate preferred embodiments of the present invention and, together with the detailed description below, are intended to further illustrate the technical concept of the present invention. However, the present invention should not be construed as being limited to what is shown in the drawings. [Figure 1] Figure 1 is a perspective view showing a fall prevention safety device according to one embodiment of the present invention moving along a wire. [Figure 2] Figure 2 is an internal perspective view showing a fall prevention safety device according to one embodiment of the present invention moving along a wire. [Figure 3] Figure 3 is a perspective view showing a fall prevention safety device according to one embodiment of the present invention in an activated state. [Figure 4] Figure 4 is an internal perspective view showing a fall prevention safety device according to one embodiment of the present invention in an activated state. [Figure 5] Figure 5 is an internal perspective view showing a fall prevention safety device according to one embodiment of the present invention detached from the wire. [Figure 6] Figure 6 is an internal perspective view showing a fall prevention safety device according to one embodiment of the present invention in which the wire is engaged in the reverse direction. [Modes for carrying out the invention]

[0039] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Regarding the reference numerals assigned to components in the drawings, the same reference numerals will be used for the same component even in different drawings, as far as possible. Furthermore, in the description of the embodiments, detailed descriptions of known structures or functions that may unnecessarily obscure the understanding of the embodiments of the present invention will be omitted.

[0040] When describing the components of an embodiment, terms such as “first,” “second,” A, B, (a), (b), etc., are used simply to distinguish them from other components, and these terms do not limit the nature, order, or series of the components. Where a component is described as being “connected,” “joined,” or “linked” to another component, that component may be directly connected or joined to the other component, or indirectly connected or joined through the other component.

[0041] Components included in one embodiment and components of other embodiments having common functions may be described using the same reference numerals and terms. Unless otherwise specified, the description in one embodiment applies similarly to other embodiments, and detailed descriptions are omitted where there is overlap.

[0042] Figure 1 is a perspective view showing a fall prevention safety device (1) according to one embodiment of the present invention moving along a wire (W).

[0043] Referring to Figure 1, a fall prevention safety device (1) according to one embodiment of the present invention is configured to prevent a worker from falling. For example, the fall prevention safety device (1) is attached to a wire (W) or other surrounding structure in the work environment, connected to a worker, and can be activated if the worker falls.

[0044] Specifically, the worker can move freely within the workspace with the fall prevention safety device (1) attached to the wire (W). When an external force is applied to the device due to a fall by the worker, the device activates and fixes to the wire (W), suspending the worker in mid-air and preventing a fall.

[0045] The fall prevention safety device (1) can be fixed to the wire (W) by a clamp structure, i.e., a tightening mechanism. For example, if activation is triggered by a worker's fall, the fall prevention safety device (1) can be fixed to the wire (W) by tightening it with a wedge action.

[0046] Furthermore, the fall prevention safety device (1) can be easily engaged with or disengaged from the wire (W) depending on the worker's convenience and the work environment. For example, the device includes a hand-operable and elastically deformable structure and is configured to allow the worker to easily attach to or detach from the wire (W).

[0047] Figure 2 is an internal perspective view showing a fall prevention safety device (1) according to one embodiment of the present invention moving along a wire (W), Figure 3 is a perspective view showing the operating state, and Figure 4 is an internal perspective view showing the operating state.

[0048] Referring to Figures 2 to 4, the fall prevention safety device (1) may include a main body (10), a clamp (11), an operating part (12), and an engaging part (13).

[0049] The main body (10) can form the external appearance of the fall prevention safety device (1) and can be attached to the wire (W). For example, a part of the main body (10) can be fastened around the wire (W). The main body (10) can also provide a frame that allows each component of the fall prevention safety device (1) to operate organically.

[0050] Specifically, the main body (10) may include a first frame (100) and a second frame (101).

[0051] The first frame (100) is positioned on one side of the wire (W), and the second frame (101) is connected to the first frame (100) and configured to surround one side of the wire (W). That is, with the second frame (101) surrounding one side of the wire (W), the first frame (100) can be positioned at a distance from the wire (W).

[0052] The second frame (101) can be formed to partially surround the wire (W) along its longitudinal direction. Since the second frame (101) surrounds only one side of the wire (W), an unenclosed area can remain on the opposite side.

[0053] Through this unenclosed area, the wire (W) can engage with or disengage from the device. Alternatively, if an operator is suspended from the wire (W) while working, the intermediate support structure can pass through this open area without interference.

[0054] The term "intermediate support structure" can refer to the connection point that connects the wire (W) to a specific structure, such as a power transmission tower, when the wire (W) is connected to that structure. However, this term is not limited to this and may include any structure located in the path along which the fall prevention safety device (1) moves along the wire (W) and which may obstruct its movement.

[0055] In conventional fall protection systems, when connecting a safety device to a wire (W), workers had to detach the safety device from the wire (W) to pass it through the intermediate support structure and then reattach it to the other side, which was inconvenient. To solve this problem, pass-through type safety devices have been proposed, but conventional devices still do not have enough space for the intermediate support structure to pass through smoothly, resulting in frequent interference and snagging.

[0056] In the present invention, a space can be formed between the first frame (100) and the second frame (101) to allow a wire (W) or an intermediate support structure to pass through. With this structure, the main body (10) can be attached to or detached from the wire (W) in conjunction with the clamp portion (11) described later.

[0057] Therefore, when the main body (10) moves vertically along the intermediate support structure, it can pass smoothly without interference and without being detached from the wire (W).

[0058] The clamp portion (11) can be connected to the first frame (100) and configured to be movable toward the wire (W). For example, the clamp portion (11) can be connected to the first frame (100) and positioned on one side of the wire (W). Specifically, a clamp hole (1000) is formed through the first frame (100), a part of the clamp portion (11) is positioned passing through the clamp hole (1000), and the clamp portion (11) is movable along the clamp hole (1000).

[0059] In other words, the clamp portion (11) is located inside the first frame (100), with a portion of it protruding outward through the clamp hole (1000), and can move while inserted along the path defined by the clamp hole (1000).

[0060] More specifically, the second frame (101) and the clamp portion (11) can be positioned facing each other with the wire (W) in between. That is, the second frame (101) surrounds one side of the wire (W), while the clamp portion (11) can move closer to or away from the opposite side of the wire (W). Therefore, the fall prevention safety device (1) is fixed to the wire (W) by the clamp structure formed by the second frame (101) and the clamp portion (11).

[0061] The clamping portion (11) may include a clamp body (110) and a clamping pin (111).

[0062] The clamp body (110) is positioned on one side of the wire (W) and is movable toward the wire (W). For example, the clamp body (110) can be located inside the first frame (100) and extend along the wire (W). The clamp body (110), together with the second frame (101), can clamp the wire (W) to form a clamp structure.

[0063] Specifically, the clamp body (110) may include a recess for gripping the wire (W). A wedge-shaped portion is formed on the surface of the clamp body (110) that contacts the wire (W), and when the fall prevention safety device (1) is activated, the wedge action of the clamp body (110) strongly presses against the wire (W), fixing the device to the wire (W).

[0064] The clamp pin (111) can protrude from the clamp body (110) and pass through the clamp hole (1000). For example, the clamp pin (111) can be formed to protrude perpendicularly from one surface of the clamp body (110) and extend outward from the first frame (100). The direction in which the clamp pin (111) protrudes can be perpendicular to the longitudinal direction of the wire (W), i.e., the direction of movement of the fall prevention safety device (1).

[0065] Specifically, the clamp body (110) includes a portion that extends outward from the wire (W), and the clamp pin (111) can be formed to protrude from the extended portion of the clamp body (110).

[0066] Furthermore, clamp holes (1000) can be formed on both sides of the first frame (100). Clamp pins (111) can protrude from both sides of the clamp body (110), pass through the clamp holes (1000), and extend outward from both sides of the first frame (100).

[0067] Multiple clamp holes (1000) may be provided. For example, multiple clamp holes (1000) can be formed on one surface of the first frame (100). According to one embodiment of the present invention, by providing at least one clamp hole (1000), the clamping force that the clamp portion (11) applies to the wire (W) can be increased, improving braking performance, and ensuring uniform contact between the upper and lower portions of the clamp portion (11) and the wire (W).

[0068] In one embodiment, the clamping holes (1000) include a first clamping hole (1000a) and a second clamping hole (1000b), and can be formed on the same plane.

[0069] The first clamp hole (1000a) is formed along the movement path of the operating part (12) on the outer surface of the first frame (100), and the second clamp hole (1000b) can be formed on the same outer surface parallel to the first clamp hole (1000a). That is, the shape of the second clamp hole (1000b) is the same as the shape of the first clamp hole (1000a), and the first clamp hole (1000a) can be located above the second clamp hole (1000b).

[0070] The clamp pin (111) may include a first clamp pin (111a) that protrudes from the clamp body (110) so as to pass through the first clamp hole (1000a), and a second clamp pin (111b) that protrudes from the clamp body (110) so as to pass through the second clamp hole (1000b).

[0071] The first clamp pin (111a) and the second clamp pin (111b) extend through the first clamp hole (1000a) and the second clamp hole (1000b), respectively, and are movable along the respective holes. Therefore, the clamp portion (11) can move toward or away from the wire (W).

[0072] A detailed description of the function and operation of the first and second clamp pins will be provided in relation to the operating part (12) and engaging part (13) described later.

[0073] The actuating part (12) can be configured to press against the clamping part (11) so that the clamping part (11) makes strong contact with the wire (W). For example, if the actuating part (12) is connected to a worker, and a fall occurs, the actuating part (12) can move in a predetermined direction and act. When the actuating part (12) moves, it can press against the clamping part (11) positioned along its movement path, causing the clamping part (11) to move in accordance with the movement of the actuating part (12).

[0074] Specifically, the operating part (12) rotates around the rotation axis, and its rotational motion presses against the clamp part (11) positioned on the rotation path, thereby moving the clamp part (11) along the rotation path. In other words, the operating part (12) presses against the clamp pin (111) along the clamp hole (1000) formed in the first frame (100), thereby moving the clamp part (11).

[0075] The operating part (12) may include an operating body (120) and a rotational elastic member (121).

[0076] The operating body (120) is connected to the first frame (100) and is rotatable around the part connected to the first frame (100) as the axis of rotation. For example, the operating body (120) can rotate inward from the first frame (100).

[0077] More specifically, one side of the operating body (120) can be connected to the inside of the first frame (100), while the other side can protrude outward from the first frame (100). If a worker falls while connected to the outside of the operating body (120), the operating body (120) can rotate around its connection point as an axis of rotation. In this case, the part of the operating body (120) that protrudes outward rotates inward towards the first frame (100) along its radius of rotation.

[0078] An annular structure can be formed at the outer end of the operating body (120) for connecting a wire (W) or a rope connected to a worker.

[0079] The operating body (120) may include a concave operating groove (1200) that accommodates a portion of the clamp portion (11). That is, the operating groove (1200) may have a shape corresponding to the clamp pin (111) and may be formed to surround the clamp pin (111). Through this operating groove (1200), the operating body (120) can press a portion of the clamp portion (11). In other words, the clamp portion (11) can be pushed in the wire (W) direction by the clamp pin (111) inserted into the operating groove (1200). In particular, a first clamp pin (111a) can be inserted into the operating groove (1200).

[0080] According to the structure of the working groove (1200), the external force generated by the rotation of the working part (12) is effectively transmitted by the first clamp pin (111a), thereby improving the fall prevention performance of the device.

[0081] The clamping holes (1000) can be formed along the rotation path of the actuation part (12). For example, the first clamping hole (1000a) can be formed along the rotation radius of the actuation part (12). Thus, when the actuation part (12) rotates toward the inside of the first frame (100), the first clamping pin (111a) can be pressed.

[0082] The first clamp pin (111a) can be pushed upward by the actuation part (12). For example, the actuation part (12) can move the first clamp pin (111a) upward and in the direction of the wire (W).

[0083] Furthermore, the second clamp hole (1000b) can be formed parallel to the rotation radius of the operating part (12).

[0084] As a result, when a fall occurs, the outside of the operating body (120) receives an external force from the worker, causing the operating body (120) to rotate. The first clamp pin (111a) inserted into the operating groove (1200) is pushed, and the clamp body (110) connected to it moves in the direction of the wire (W), pressing against the wire (W), and the safety device (1) is fixed to the wire (W) by a wedge action.

[0085] The rotational elastic member (121) can be configured to rotate the operating body (120). For example, the rotational elastic member (121) can be positioned on the connection between the operating body (120) and the first frame (100), i.e., on the axis of rotation.

[0086] The rotational elastic member (121) can rotate the operating body (120) in the same direction as the clamp portion (11) approaches the wire (W).

[0087] The rotational elastic member (121) can rotate the operating body (120) by elastic deformation. For example, the rotational elastic member (121) can include a torsion spring. When the safety device (1) is not fixed to the wire (W) and is moving freely, the operating body (120) can rotate in the opposite direction to the direction of the elastic force of the torsion spring.

[0088] More specifically, if the actuation unit (12) is connected to the worker via a rope, gravity may cause the other components to move downward, leaving the actuation unit (12) in an upwardly rotated position. In this case, the rotational elastic member (121) applies a counter-rotational force in the opposite direction to the rotational position of the actuation unit (12).

[0089] When a worker falls and the operating body (120) rotates and presses against the clamp pin (111), the torsion spring causes the operating body (120) to rotate further in the same direction as its rotation, so that the safety device (1) can be activated instantaneously in response to the fall.

[0090] Therefore, when the safety device (1) is fixed to the wire (W) in the event of a fall, even a slight movement of the operating part (12) can induce and accelerate rotation, thereby enhancing the fall prevention function of the fall prevention safety device (1).

[0091] In embodiments of the present invention, the rotational elastic member (121) corresponding to the rotation axis of the operating body (120) and the first clamp pin (111a) corresponding to the movement axis of the clamp body (110) can be mechanically separated. This separation structure can be explained based on the principle of levers.

[0092] Specifically, when a rope connected to a worker pulls the ring portion of the operating body (120) upward or downward, the ring portion acts as the point of force application, the rotational elastic member (121) acts as the fulcrum, and the first clamp pin (111a) functions as the point of application.

[0093] Moment is defined as the product of the distance from the fulcrum and the force acting perpendicular to that point. A lever is in equilibrium when the moments at the point of force application and the point of application are equal. Therefore, by shortening the distance between the point of application and the fulcrum, a greater force can be generated at the point of application than the force applied at the point of force application.

[0094] By utilizing this lever principle, even a small force applied to the operating body (120) by the worker during normal movement along the wire (W) can exert a force greater than the tension of the rotational elastic member (121), thereby pulling the operating body (120) upward. Therefore, the clamp part (11) can be detached from the wire (W) as needed.

[0095] Conversely, in the event of a worker falling, the clamping force applied by the clamp section (11) to the wire (W) is maximized against the downward tensile force that the wire (W) exerts on the operating body (120), enabling effective braking.

[0096] The engaging portion (13) can be configured to control the engagement between the safety device (1) and the wire (W). For example, the engaging portion (13) can adjust the distance between the wire (W) and the clamp portion (11) by moving, thereby engaging or disengaging the safety device (1) from the wire (W).

[0097] The engaging portion (13) can support one side of the clamp portion (11) so that the wire (W) is positioned between the second frame (101) and the clamp portion (11). For example, the engaging portion (13) can support one side of the clamp pin (111) to maintain the distance between the second frame (101) and the clamp body (110). That is, in a direction perpendicular to the longitudinal direction of the wire (W), the engaging portion (13) has the function of preventing the wire (W) from falling out of the space between the second frame (101) and the clamp portion (11).

[0098] On the other hand, the engaging portion (13) has the function of moving the clamp portion (11) outward, thereby releasing the wire (W) from between the second frame (101) and the clamp portion (11). In other words, the safety device (1) can be detached from the wire (W) by retracting the support structure of the clamp portion (11) or by pressing the clamp portion (11) in the opposite direction to the tightening direction.

[0099] The first frame (100) may further have an engagement hole (1001) formed through it. A portion of the engagement part (13) passes through the engagement hole (1001), and the engagement part (13) is movable along the engagement hole (1001). The engagement hole (1001) may include a first engagement hole (1001a) formed in the upper part of the first frame (100) and a second engagement hole (1001b) formed in the lower part of the first frame (100).

[0100] Figure 5 is an internal perspective view showing the state in which the safety device (1) is detached from the wire (W) according to one embodiment of the present invention.

[0101] Referring to Figure 5, the engaging portion (13) may include a first engaging portion (130) and a second engaging portion (131).

[0102] The first engaging portion (130) can come into contact with the first clamp pin (111a). For example, the first engaging portion (130) can support the first clamp pin (111a) or press against the first clamp pin (111a) to move it in a predetermined direction.

[0103] In order to activate the first engaging portion (130), a part of it can pass through the first engaging hole (1001a). The first engaging portion (130) is movable by a predetermined distance. For example, the first engaging portion (130) can move downward, that is, in the direction of the second engaging portion (131).

[0104] The first engaging portion (130) may include a first engaging body (1300) and a first engaging pin (1301).

[0105] The first engaging body (1300) can be located outside the first frame (100). For example, the first engaging body (1300) can have a shape that partially encloses the upper part of the first frame (100). That is, with respect to the longitudinal direction of the wire (W), the first engaging body (1300) can extend along both sides of the first frame (100).

[0106] The first engagement pin (1301) can protrude from the first engagement body (1300) and pass through the first engagement hole (1001a). For example, if the first engagement bodies (1300) are formed on both sides of the first frame (100), the first engagement pin (1301) can be formed to pass through the first engagement body (1300), the first frame (100), and the first engagement body (1300) on the opposite side in that order.

[0107] The first engaging pin (1301) can move along the first engaging hole (1001a), and accordingly the first engaging portion (130) can move by a predetermined distance.

[0108] The first engaging body (1300) may include a first support surface (1300a) that supports the first clamp pin (111a). By releasing the support of the first clamp pin (111a) by the first support surface (1300a), the clamp portion (11) can be detached from the wire (W).

[0109] For example, the first support surface (1300a) can be formed below the first engagement hole (1001a), and the first engagement hole (1001a) can be formed to extend in the vertical direction. When an operator presses the first engagement portion (130) downward, i.e., towards the second engagement portion (131), the first engagement portion (130) moves downward along the first engagement hole (1001a), the first support surface (1300a) that was supporting the first clamp pin (111a) is released from contact, and the first clamp pin (111a) can be separated.

[0110] More specifically, the first engagement portion (130) may further include a compressible elastic member (1302) having one end fixed to the first frame (100) and the other end connected to the first engagement pin (1301). For example, the compressible elastic member (1302) may include an elastically deformable compression spring.

[0111] When the first engagement pin (1301) moves along the first engagement hole (1001a) due to the elastic force of the compression elastic member (1302), the first support surface (1300a) can be separated from the first clamp pin (111a). In this case, the first engagement hole (1001a) may include a portion formed along the longitudinal direction of the wire (W) and a portion formed along the direction in which the compression elastic member (1302) is compressed.

[0112] In other words, when the compressible elastic member (1302) is compressed, that is, when the safety device (1) is engaged with the wire (W), the other end of the compressible elastic member (1302) can be positioned above the first engagement pin (1301) in the first engagement hole (1001a). When an operator presses the first engagement portion (130) from above downward to release the engagement, the first engagement pin (1301) moves downward along the longitudinal direction of the wire (W), and then, due to the restoring force of the compression spring, the first engagement pin (1301) can move along the elastic deformation direction on the first engagement hole (1001a).

[0113] The first engaging body (1300) may include a pressing surface (1300b) that presses against the first clamp pin (111a) as the first engaging pin (1301) moves along the first engaging hole (1001a). For example, if one side of the first clamp pin (111a) is supported by the first support surface (1300a), the opposite side can be pressed by the pressing surface (1300b) of the first engaging body (1300). That is, the first engaging body (1300) includes a portion extending from its upper surface toward the opposite side of the first clamp pin (111a), and when an operator presses the first engaging portion (130) downward, the pressing surface (1300b) can press against the opposite side of the first clamp pin (111a).

[0114] In this case, the first engaging body (1300) may include a through-formed movable groove (1300c). For example, the movable groove (1300c) can be formed through the portion of the first engaging body (1300) that extends from the upper surface toward the opposite surface of the first clamp pin (111a). A fixing pin that fixes and connects the first engaging portion (130) and the first frame (100) is positioned within the movable groove (1300c), and when the first engaging portion (130) is pressed downward, the movable groove (1300c) can move downward relative to the fixing pin.

[0115] As a result, the first engagement pin (1301) moves downward along the first engagement hole (1001a) and away from the wire (W), and the first support surface (1300a), which is formed spaced above the first engagement pin (1301), moves away from the first clamp pin (111a). At the same time, the movable groove (1300c) moves downward relative to the fixed pin, and the first engagement portion (130) rotates slightly along a predetermined radius of rotation, releasing the support on one side of the first clamp pin (111a) and pressing on the opposite side. Thus, the clamp portion (11) can be detached from the wire (W).

[0116] The second engaging portion (131) can contact the second clamp pin (111b). That is, the second engaging portion (131) can support the second clamp pin (111b) and release its support as needed. For example, the second engaging portion (131) can move through the second engaging hole (1001b) to support or release the second clamp pin (111b).

[0117] The second engagement portion (131) may include a second engagement body (1310), a second engagement pin (1311), a tensile elastic member (1312), and an operating portion (1313).

[0118] The second engaging body (1310) can be located outside, particularly below, the first frame (100). In this configuration, the second engaging body (1310) is movable vertically along the longitudinal direction of the wire (W).

[0119] The second engagement pin (1311) can protrude from the second engagement body (1310) and pass through the second engagement hole (1001b). For example, if the second engagement bodies (1310) are formed on both sides of the first frame (100), the second engagement pin (1311) can be formed to pass through the second engagement body (1310), the first frame (100), and the second engagement body (1310) on the opposite side in that order.

[0120] The second engagement hole (1001b) is formed vertically along the longitudinal direction of the wire (W), and the second engagement pin (1311) can move vertically along the engagement hole (1001b).

[0121] The second engaging body (1310) may include a second support surface (1310a) that supports the second clamp pin (111b). When the second engaging body (1310) is moved upward by the operator along the longitudinal direction of the wire (W), the second support surface (1310a) moves away from the second clamp pin (111b), and the second clamp pin (111b) can move away from the wire (W) along the second clamp hole (1000b).

[0122] The tensile elastic member (1312) is fixed at one end to the first frame (100) and connected at the other end to the second engagement pin (1311), and is elastically deformable. In other words, the tensile elastic member (1312) may include a compression spring. The second support surface (1310a) can be separated from the second clamp pin (111b) by the second engagement pin (1311) moving along the second engagement hole (1001b) in a direction opposite to the direction of the elastic force of the tensile elastic member (1312).

[0123] The tensile elastic member (1312) can be positioned inside the second engagement hole (1001b) along the longitudinal direction of the wire (W).

[0124] In other words, when the safety device (1) is engaged with the wire (W), that is, when the second clamp pin (111b) is located below the second engagement hole (1001b), the second support surface (1310a) can support one side of the second clamp pin (111b).

[0125] When the operator moves the second engaging body (1310) upward, and the second engaging pin (1311) moves upward as a result, the second engaging pin (1311) can stretch and deform the tensile elastic member (1312) in the opposite direction to its restoring force. In this state, the second clamp pin (111b) can detach from the second support surface (1310a) and move along the second clamp hole (1000b) away from the wire (W).

[0126] To allow the second clamp pin (111b) to detach more smoothly from the wire (W) after it has disengaged from the second support surface (1310a), the second engaging body (1310) may include an inclined surface (1310b) on the underside of the second support surface (1310a). That is, the inclined surface (1310b) is a surface inclined with respect to the second support surface (1310a) and can be connected to its underside. As the second engaging body (1310) moves upward, the second clamp pin (111b), which was in contact with the second support surface (1310a), moves along the inclined surface (1310b), thereby allowing it to detach from the wire (W).

[0127] The operating part (1313) is formed on the outer surface of the second engaging body (1310) and can be operated by an operator. For example, the operating part (1313) can be formed to protrude from the second engaging body (1310) in the direction opposite to the wire (W). When an operator presses the lower surface of the operating part (1313), the second engaging body (1310) can be moved from below to above, that is, in the direction of the first engaging part (130), thereby making it easier to operate the second engaging part (131).

[0128] Therefore, the structure of the first engaging portion (130) and the second engaging portion (131) as described above allows the safety device (1) to be easily attached to or detached from the wire (W).

[0129] The safety device (1) according to an embodiment of the present invention can perform a reverse engagement prevention function to prevent an operator from incorrectly attaching the device to the wire (W) in the opposite direction to the direction of gravity.

[0130] If an operator attempts to attach the safety device (1) to the wire (W) in the opposite direction to gravity, i.e., upside down, the device may not engage with the wire (W). In this regard, Figure 6 is an internal perspective view showing the state in which the safety device (1) is engaged with the wire (W) in the opposite direction, according to one embodiment of the present invention.

[0131] Referring to Figure 6, when the safety device (1) is positioned in the opposite direction to gravity, it can not engage with the wire (W). For example, in the reversed position, the clamp (11) can maintain close contact with the second frame (101).

[0132] In this reversed state, the clamp portion (11) can move downward along the clamp hole (1000) due to gravity. As shown in Figure 6, the clamp portion (11) can be located below the clamp hole (1000) and in contact with the second frame (101).

[0133] Furthermore, the actuating part (12) has only the function of pressing against the clamping part (11), and when it rotates in the opposite direction, it does not apply force to other components. Therefore, when the safety device (1) is positioned in the reverse direction and the actuating part (12) rotates downward, i.e., away from the clamping part (11), the actuating part (12) can rotate independently without affecting other components.

[0134] At the same time, even if the safety device (1) is positioned in the reverse direction and the operator operates the engaging part (13) to attach the device to the wire (W), the clamp part (11) can maintain a tight contact with the second frame (101).

[0135] Referring again to Figure 6, when an upward external force is applied to the first engagement portion (130) by the operator, an upward force is also applied to the first engagement pin (1301), and the pressing surface (1300b) can press the first clamp pin (111a) upward.

[0136] As shown in Figure 6, when viewed from below and above, the first engagement hole (1001a) is formed along the longitudinal direction of the wire (W), and can then be formed to extend diagonally outward from the wire (W).

[0137] In contrast, the first clamp hole (1000a) can be formed in a partial arc shape corresponding to the rotation path of the operating part (12). Furthermore, the engaging part (13) can be restricted to vertical movement only by the movable groove (1300c).

[0138] Therefore, the movement of the engaging portion (13) is restricted by the movable groove (1300c), and since the first engaging hole (1001a) and the first clamping hole (1000a) have different shapes, the movement of the engaging portion (13) can be prevented by the first engaging pin (1301) and the first clamping pin (111a).

[0139] Therefore, if the safety device (1) is positioned in the reverse direction, the operator cannot move the first engaging portion (130) upward, and the clamp portion (11) can maintain contact with the second frame (101).

[0140] Furthermore, even if the operator moves the second engaging portion (131) downward, the second engaging portion (131) does not affect other components, so the clamp portion (11) can maintain a tight contact with the second frame (101).

[0141] In an embodiment of the present invention, if the safety device (1) is installed in reverse, the clamp portion (11) remains in contact with the second frame (101), preventing the wire (W) from being inserted into the frame. Therefore, it has the advantage of preventing misuse of the safety device (1) by the worker.

[0142] The above description illustrates the technical concept of the present invention through exemplary embodiments. It will be apparent to those skilled in the art that various modifications and changes are possible without departing from the essential features of the present invention.

[0143] Therefore, the embodiments disclosed herein are not intended to limit the technical concept of the present invention, but rather to illustrate it, and the scope of the present invention should not be construed as being limited to these embodiments.

[0144] The scope of protection of this invention shall be interpreted in accordance with the following claims, and all equivalent technical ideas contained therein shall be included within the scope of the rights of this invention.

[0145] The best mode for carrying out the present invention has been described in detail in the above-described embodiments.

[0146] This disclosure relates to a fall prevention safety device applicable to worker safety, and has industrial applicability because it is actually applicable and reproducible.

Claims

1. A main body comprising a first frame attached to a wire and positioned on one side of the wire, and a second frame connected to the first frame and configured to surround one side of the wire, A clamp portion connected to the first frame, located on one side of the wire, and movable toward the wire, An operating part connected to the first frame and pressing the clamp portion toward the wire, An engaging portion that supports one side of the clamp portion or moves the clamp portion outward from the wire such that the wire is positioned between the second frame and the clamp portion, A fall prevention safety device characterized by being equipped with [a specific feature].

2. In the fall prevention safety device described in claim 1, The first frame has a clamp hole formed through it, A portion of the clamping portion extends through the clamping hole, This allows the clamp portion to move along the clamp hole. Safety device for fall prevention.

3. In the fall prevention safety device described in claim 2, The clamp portion is A clamp body positioned on one side of the wire and movable toward the wire, A clamp pin protruding from the clamp body and passing through the clamp hole, Features that include Safety device for fall prevention.

4. In the fall prevention safety device described in claim 3, The operating part presses the clamp pin, The clamp portion is configured to move along the clamp hole. Safety device for fall prevention.

5. In the fall prevention safety device described in claim 3, The engaging portion supports one surface of the clamp pin, It is characterized by being configured to maintain the distance between the second frame and the clamp body. Safety device for fall prevention.

6. In the fall prevention safety device described in claim 1, The aforementioned operating part includes an operating body that is rotatable around a portion connected to the first frame, The actuator is characterized in that it is rotatable in a direction that allows it to be inserted into the inside of the first frame. Safety device for fall prevention.

7. In the fall prevention safety device described in claim 6, The actuator has an operating groove recessed to receive a part of the clamp portion, The actuator is configured to press a portion of the clamp portion through the operating groove. Safety device for fall prevention.

8. In the fall prevention safety device described in claim 7, The first frame has a clamp hole formed through it, The clamp portion comprises a clamp body positioned on one side of the wire and movable toward the wire, A clamp pin protruding from the clamp body and passing through the clamp hole, Includes, The clamping portion is characterized by being in close contact with the wire when the clamping pin is inserted into the operating groove. Safety device for fall prevention.

9. In the fall prevention safety device described in claim 6, The actuation unit further includes a rotational elastic member disposed at the portion to which the actuation body is connected to the first frame, The rotational elastic member is characterized in that it is configured to rotate the actuator by elastic deformation. Safety device for fall prevention.

10. In the fall prevention safety device described in claim 6, The first frame is characterized by having a clamp hole formed through it parallel to the rotation path of the actuator. Safety device for fall prevention.

11. In the fall prevention safety device according to claim 10, The first frame has a through-formed engagement hole, A portion of the engaging portion penetrates the engaging hole, and the engaging portion is characterized in that it is movable along the engaging hole. Safety device for fall prevention.

12. In the fall prevention safety device according to claim 11, The first frame mentioned above is, A first clamp hole formed through the movement path of the operating part, A second clamp hole formed through the first clamp hole parallel to it, Characterized by having Safety device for fall prevention.

13. In the fall prevention safety device according to claim 12, The clamp portion is A clamp body positioned on one side of the wire and movable toward the wire, A first clamp pin protruding from the clamp body and passing through the first clamp hole, A second clamp pin protruding from the clamp body and passing through the second clamp hole, Features that include Safety device for fall prevention.

14. In the fall prevention safety device according to claim 13, The aforementioned engaging portion is A first engaging portion that contacts the first clamp pin, The second engaging portion that contacts the second clamp pin, Features that include Safety device for fall prevention.

15. In the fall prevention safety device described in claim 14, The engagement hole is A first engagement hole through which a part of the first engagement portion passes, A second engagement hole through which a portion of the second engagement portion passes, Features that include Safety device for fall prevention.

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