Push-pull type protective fence

Abstract

The invention discloses a push-pull type protective fence, and relates to the field of protective fences. The movable handrails are arranged on the frame, the elastic rope winding and unwinding units are arranged at the two ends of each handrail, the elastic ends of the elastic rope winding and unwinding units extend to the middles of the handrails, the elastic ends of the elastic rope winding and unwinding units of the adjacent handrails on the same side can be connected through the first ropes, and when the handrails are unfolded, the handrails on one side move; through the traction effect of the first ropes, the other handrails are driven to move synchronously; when the handrails are folded, the elastic rope winding and unwinding unit enables the first rope to be shrunk into the handrails, and therefore the handrails are folded in a more attached mode. On the whole, linkage of the handrails in the unfolding process can be achieved, meanwhile, sight is not blocked, and an open space is provided when the handrails are folded.

Description

Technical Field

[0001] The invention relates to the field of guardrails, and in particular to a push-pull guardrail. Background Art

[0002] Door and window guardrails refer to the protective structure formed by multiple railings on the door / window when the door or window is open. Taking window guardrails as an example, they are used to prevent children from climbing and falling from the window and outsiders from illegally intruding.

[0003] At present, the more mainstream guardrail is composed of multiple railings fixed to the frame, and then installed and fixed to the window as a whole. However, this will make it difficult to escape through the window when a fire or other dangerous situation occurs. At the same time, the fixed guardrail affects the user's line of sight when they need to see the scenery outside the window.

[0004] Traditional push-pull guardrails are mainly composed of a mounting frame, guide rails on opposite sides, railings that can be pushed and pulled between the guide rails, and locking mechanisms and other components. Each adjacent railing is connected by a quadrilateral hinge, so that the railings are parallel to each other during the push-pull process. When the locking mechanism fixes the railing on the far side to the mounting frame, the quadrilateral hinge is stretched open, and the rigidity of each railing is maintained, thereby achieving the protective function; when the locking mechanism is unlocked, the quadrilateral hinge is folded, and each railing can be closed to the mounting frame on the other side to form an open window. However, the quadrilateral hinged push-pull railing structure has the problem of blocking the line of sight and cannot meet the user's demand for simplicity and beauty.

[0005] It can be seen that the railing linkage structure of the prior art has problems such as greatly affecting the line of sight and lack of simplicity and aesthetics. Summary of the invention

[0006] In order to solve the problems existing in the prior art, the main purpose of the present invention is to provide a push-pull guardrail that can realize the linkage of the railings, maintain rigidity when the railings are unfolded, have a good line of sight and simple and beautiful appearance, and provide an open space when the railings are closed.

[0007] In order to achieve the above object, the present invention adopts the following technical solution: a push-pull type guardrail, comprising: a frame having a first side, a second side opposite to the first side, and a third side and a fourth side located at both ends of the first side and the second side; and A railing is movably disposed between the third side and the fourth side of the frame in the direction of the first side and the second side; characterized in that: The two side ends of the railing are respectively provided with elastic retractable rope units, the elastic retractable rope units have a fixed end and an elastic end, the fixed end of the elastic retractable rope unit is connected to the end of the railing, and the elastic end of the elastic retractable rope unit extends toward the middle of the railing; the elastic end of the elastic retractable rope unit of the railing is connected to the elastic end of the elastic retractable rope unit of another adjacent railing on the same side through a first rope cable, and / or the elastic end of the elastic retractable rope unit of the railing is connected to the second side of the adjacent frame through the first rope cable; When the handrail moves to the first side, the first cable is pulled outside the handrail, and the elastic end of the elastic retractable rope unit elastically compresses potential energy; When the railing moves toward the second side, the elastic end of the elastic retractable rope unit stretches elastically, and the first rope is retracted into the railing.

[0008] Preferably, the elastic retractable rope unit further comprises an adjusting rod, and the adjusting rod is connected to the fixed end or the elastic end of the elastic retractable rope unit, so that the distance between the fixed end and the elastic end of the elastic retractable rope unit can be adjusted; When the handrail moves to the first side to a set distance, the elastic end of the elastic retractable rope unit and the fixed end of the elastic retractable rope unit are in limited contact with each other through the adjusting rod.

[0009] Preferably, the elastic rope retractable unit includes a fixed seat, a movable seat and a first elastic member, the railing is a hollow structure, the movable seat can be slidably arranged inside the railing, the fixed seat is arranged at the end of the railing, and the two ends of the first elastic member are respectively fixedly connected to the movable seat and the fixed seat; the fixed seat is provided with two first rope guide holes for the first cable to move.

[0010] Preferably, a second rod frame is respectively provided on the third side and the fourth side of the frame, the second rod frame is provided with a receiving groove, and elastic arms are provided on both sides of the fixing seat, and the elastic arms are elastically abutted against both sides of the receiving groove respectively.

[0011] Preferably, the elastic rope retractable unit includes a cover plate, a rope winding groove is provided on the side of the movable seat facing away from the first elastic member, two adjacent first cables on the same side are composed of a continuous cable fixed to the rope winding groove and extending from both sides of the rope winding groove, and the cover plate is arranged on the side of the movable seat away from the first elastic member and covers the rope winding groove to fix the rope inside the rope winding groove.

[0012] Preferably, a first rod frame is provided on the second side of the frame, and two sliders are provided in the first rod frame on the second side, the first cable connected to the elastic retractable rope unit on the third side of the railing closest to the second side is fixed to one of the sliders, the first cable connected to the elastic retractable rope unit on the fourth side of the railing closest to the second side is fixed to the other slider, and the two sliders are connected by a second elastic member.

[0013] Preferably, the railing is configured as a profile rod with a uniform cross-section throughout its entire length, and the cross-sectional shape of the fixing seat matches the cross-sectional shape of the railing; the fixing seat is provided with a snap arm to match and snap into the railing; the cross-sectional shape of the movable seat matches the cross-sectional shape of the railing so that the movable seat can slide in the railing.

[0014] Preferably, the railing is configured with at least two railings, at least one of which has a first pulley and a second pulley at both ends, respectively, and the push-pull guardrail further includes: A second cable, one end of the second cable is connected to the first side of the frame, the other end of the second cable passes around the first pulley via the third side, passes around the second pulley, and is connected to the second side of the frame via the fourth side; The third cable, one end of the third cable is connected to the first side of the frame, the other end of the third cable passes around the second pulley via the fourth side, passes around the first pulley, and is connected to the second side of the frame along the third side.

[0015] Preferably, the first pulley and the second pulley are respectively arranged on the elastic rope-releasing units at both ends of the railing closest to the first side; A first rod rack is provided on the first side and the second side of the frame, respectively, and a second rod rack is provided on the third side and the fourth side of the frame, respectively. The first rod rack and the second rod rack are configured as a hollow structure and are connected by an angle connector. The angle connector is provided with a second rope guide hole, and the second cable and the third cable pass through the second rope guide hole. A rope fixing hole is provided inside the first rod rack, and an end of the second cable and / or an end of the third cable pass through the rope fixing hole and are connected to the cable clamp.

[0016] Preferably, the railing is configured with at least two, the elastic end of the elastic retractable rope unit of the railing closest to the second side is fixedly connected to the frame through the first cable, and the elastic end of the elastic retractable rope unit of the railing closest to the first side is connected to a traction cable; The railing closest to the first side is provided with a locking bolt; the first side of the frame is provided with a locking hole, and the locking bolt and the locking hole cooperate with each other to lock the railing closest to the first side to the first side of the frame; the elastic end limiting stroke of the elastic retractable rope unit matches the locking position of the railing closest to the first side, so that when the railing closest to the first side is locked to the first side of the frame, the elastic end of the elastic retractable rope unit of each railing abuts against the fixed end to limit the position.

[0017] Preferably, a second rod frame is respectively provided on the third side and the fourth side of the frame, the second rod frame is provided with a receiving groove, the end of the railing is arranged in the receiving groove of the second rod frame, the side wall of the receiving groove of the second rod frame is provided with a limiting convex rail, and the fixed end of the elastic retractable rope unit is provided with a limiting groove; the limiting convex rail and the limiting groove cooperate with each other to constrain the two ends of the railing to slide between the two second rod frames.

[0018] Compared with the prior art, the present invention has the following beneficial effects: (1) In the present invention, a movable railing is arranged on the frame, and elastic retractable rope units are arranged at both ends of each railing. The elastic ends of the elastic retractable rope units extend toward the middle of the railing. The first cable can connect the elastic ends of the elastic retractable rope units of adjacent railings on the same side, so that when the railing is unfolded, the railing on one side moves, and the remaining railings are driven to move synchronously through the traction of the first cables; when the railing is closed, the elastic retractable rope units of each railing release the elastic force and the first cables are retracted into the railing, so that each railing is closed more closely. On the whole, the railing can be linked in the unfolding process, and the sight is unobstructed, providing an open space when the railing is closed.

[0019] (2) In the present invention, further, when the railing is fully deployed, the elastic end of the first cable elastic retractable rope unit of each railing abuts against the fixed end, making it impossible to further release the rope, so that each railing is subjected to the tension of each first cable and is relatively fixed at a preset distance, thereby maintaining the rigidity of full deployment, and the railing has protective rigidity when fully deployed.

[0020] (3) In the present invention, further, elastic arms are provided on both sides of the fixed end of the first cable elastic retractable rope unit of each railing, and the railings arranged on the third side and the fourth side of the frame are provided with accommodating grooves, and the two elastic arms are elastically abutted against the accommodating grooves respectively, thereby forming a friction force between the railing and the accommodating grooves, which can offset the self-weight of the railing arranged in the vertical direction, thereby preventing the first cable from being pulled out due to gravity factors in the closed state, so that the railing can remain in the closed state.

[0021] (4) In the present invention, further, at least one of the railings is provided with a first pulley and a second pulley at both ends, which cooperate with the second cable to form a torque in one direction and cooperate with the third cable to form a torque in the opposite direction, so as to maintain the posture of the railing, and further transmit the tension of the first cable to maintain the posture of the remaining railings. When the user applies an eccentric thrust to the railing, the railing and the remaining railings can still maintain a parallel posture, and the movement of the railing is supported by the rolling of the pulleys, making the movement process smoother.

[0022] (5) In the present invention, further, a rope winding groove and a cover plate are provided on the movable seat of the elastic rope retractable unit, so that each first rope can be arranged in a manner of winding a continuous rope around the movable seat of each elastic rope retractable unit in sequence, thereby making assembly easier.

[0023] (6) In the present invention, further, the first cables connected to the elastic retractable rope units at both ends of the railing closest to the second side can be respectively fixed to two sliders on the frame close to the second side, and the two sliders are connected by a second elastic member, so that when the railing is in a closed state, the first cables of the railing closest to the second side can be retracted into the second side of the frame under the action of the second elastic member. At the same time, when each first cable is composed of a continuous cable, the end of the continuous cable can be fixed to the slider. In addition, the number of railings can be adjusted by disassembly, and excess continuous cables of different lengths can be fixed to the slider.

[0024] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the main structure of a push-pull type guardrail according to an embodiment of the present invention; Figure 2 A schematic diagram of a front cross-sectional structure of a push-pull type guardrail in an unfolded state according to an embodiment of the present invention; Figure 3 A schematic diagram of the front cross-sectional structure of a push-pull type guardrail in a closed state according to an embodiment of the present invention.

[0026] Figure 4 A partially enlarged cross-sectional structural schematic diagram of a push-pull type guardrail in an unfolded state according to an embodiment of the present invention; Figure 5 A partially enlarged cross-sectional structural schematic diagram of a push-pull type guardrail in a closed state according to an embodiment of the present invention.

[0027] Figure 6 A schematic diagram of a partial cross-sectional structure of a push-pull type guardrail in a closed state according to an embodiment of the present invention; Figure 7 A schematic diagram of a partial cross-sectional structure of a push-pull type guardrail in an unfolded state according to an embodiment of the present invention.

[0028] Figure 8 A schematic diagram of a partial cross-sectional structure of a railing with pulleys of a push-pull type guardrail according to an embodiment of the present invention.

[0029] Fig. 9 A schematic three-dimensional structural diagram of an elastic retractable rope unit with a pulley of a push-pull type guardrail according to an embodiment of the present invention.

[0030] Fig.10 One of the three-dimensional structural schematic diagrams of an elastic retractable rope unit without pulleys of a push-pull type guardrail according to an embodiment of the present invention; Fig.11 The second schematic diagram of the three-dimensional structure of an elastic retractable rope unit without pulleys of a push-pull type guardrail according to an embodiment of the present invention.

[0031] Fig.12 A schematic three-dimensional structure diagram of a sliding block of a push-pull type guardrail according to an embodiment of the present invention.

[0032] Reference numerals: 10, frame; A, first side; B, second side; C, third side; D, fourth side; 11, first rod frame; 12, second rod frame; 121, receiving groove; 122, limiting convex rail; 13, corner connector; 131, second rope guide hole; 20, railing; 30, elastic rope retracting unit; 31, fixing seat; 311, first rope guide hole; 312, limiting groove; 313, buckle arm; 314, elastic arm; 3 2. movable seat; 321. rope winding groove; 33. first elastic member; 34. adjusting rod; 35. cover plate; 41. first cable; 42. traction cable; 51. second cable; 52. third cable; 61. first pulley; 62. second pulley; 71. locking bolt; 72. locking hole; 81. cable fixing hole; 82. cable clamp; 91. slider; 911. annular groove; 912. through hole; 92. second elastic member;. DETAILED DESCRIPTION

[0033] In order to better illustrate the purpose, technical solutions and advantages of the present invention, the specific implementation methods of the present invention are further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] like Figures 1 to 11 1 is a push-pull type guardrail according to an embodiment of the present invention. The push-pull type guardrail comprises a frame 10 and a railing 20. The frame 10 has a first side A and a second side B relative to the first side A. In addition, the frame 10 has a third side C and a fourth side D located at both ends of the first side A and the second side B. The railing 20 is movably disposed between the third side C and the fourth side D of the frame 10 in the direction of the first side A and the second side B.

[0035] To achieve the purpose of the present invention, specifically, elastic retractable rope units 30 are respectively provided at the two side ends of the railing 20, and the elastic retractable rope unit 30 has a fixed end and an elastic end. The fixed end of the elastic retractable rope unit 30 is connected to the end of the railing 20, and the elastic end of the elastic retractable rope unit 30 extends toward the middle of the railing 20.

[0036] In an embodiment not shown in the figure, the railing 20 is configured as one, the elastic end of the elastic retractable rope unit 30 on one side of the railing 20 is connected to the second side B of the frame 10 through the first cable 41, and the elastic end of the elastic retractable rope unit 30 on one side of the railing 20 is connected to the traction cable 42. When the traction cable 42 is rolled toward the first side A, the railing 20 moves toward the first side A, the first cable 41 and the traction cable 42 in the elastic retractable rope unit 30 are pulled outside the railing 20, and the elastic end of the elastic retractable rope unit 30 is elastically compressed. When the traction cable 42 is rolled toward the first side A to a preset length, the railing 20 moves to the first side A to a set distance, such as from the second side B of the frame 10 to the middle of the frame 10, and the elastic end of the elastic retractable rope unit 30 is limitedly abutted against the fixed end of the elastic retractable rope unit 30. At this time, the position of the traction rope 42 is maintained unchanged. Due to the position restriction of the elastic end of the elastic retractable rope unit 30, the first rope 41 cannot continue to be released, and the handrail 20 is fixed and cannot move toward the first side A or the second side B under the action of external force. When the traction rope 42 is released toward the second side B, the handrail 20 moves toward the second side B, the elastic end of the elastic retractable rope unit 30 elastically stretches, and the first rope 41 is retracted into the handrail 20.

[0037] In such Figures 1 to 5 In the embodiment shown, at least two railings 20 are provided to be applied to windows with larger spaces. In the embodiment, six railings 20 are schematically configured. The elastic ends of the elastic retractable rope units 30 of two adjacent railings 20 close to the same side, such as close to the fourth side D of the frame 10, are connected by a first cable 41. The elastic ends of the elastic retractable rope units 30 at both ends of the railing 20 closest to the second side B are connected to the second side B of the frame 10 by the first cable 41. The elastic ends of the elastic retractable rope units 30 at both ends of the railing 20 closest to the first side A are respectively connected to the traction cable 42.

[0038] like Figure 6 and Figure 7 As shown, when the traction rope 42 is rolled up toward the first side A, the railing 20 closest to the first side A moves toward the first side A, and the first rope 41 and the traction rope 42 in the elastic retractable rope unit 30 at both ends thereof are pulled outside the railing 20, and the elastic end of the elastic retractable rope unit 30 is elastically compressed. Under the tension of the first rope 41, the elastic end of the elastic retractable rope unit 30 of the adjacent railing 20 is also elastically compressed, and the adjacent railing 20 also moves toward the first side A. Further, the elastic ends of the elastic retractable rope units 30 of the remaining railings 20 are also elastically compressed, and the remaining railings 20 move toward the first side A, and each railing 20 moves toward the deployed state.

[0039] like Figure 6 and Figure 7As shown, when the traction rope 42 is rolled up to a preset length toward the first side A, the handrail 20 closest to the first side A moves toward the first side A to a set distance, such as moving to fit the first side A of the frame 10, and the elastic end of its elastic retractable rope unit 30 is elastically compressed, and at the same time, the elastic end of its elastic retractable rope unit 30 is limitedly abutted against the fixed end of the elastic retractable rope unit 30, and the first rope 41 cannot be further pulled out of the handrail 20. Under the tension of the first rope 41, the elastic end of the elastic retractable rope unit 30 of the adjacent handrail 20 also has the same elastic compression degree, in other words, the elastic end of the elastic retractable rope unit 30 is also displaced by the same distance, and the first rope 41 is pulled out of the handrail 20 by the same length. Therefore, the elastic end of the elastic retractable rope unit 30 of the adjacent handrail 20 is also limitedly abutted against the fixed end of the elastic retractable rope unit 30. Furthermore, the elastic ends of the elastic retractable rope units 30 of the remaining railings 20 will also be limitedly abutted against their corresponding fixed ends, and the first cables 41 cannot be further pulled out, and the expansion of the distance between the railings 20 is limited. Therefore, when fully deployed, each railing 20 is fixed relative to the frame 10, and the relative distance between the railings 20 is fixed, forming a protective enclosure structure.

[0040] like Figure 6 and Figure 7 As shown, when the traction rope 42 is released toward the second side B, the handrail 20 closest to the first side A moves toward the second side B, and the elastic ends of the elastic retractable rope units 30 at both ends thereof are elastically stretched, and the first rope 41 and the traction rope 42 are retracted into the handrail 20. Similarly, under the tension of the first rope 41, the elastic ends of the elastic retractable rope units 30 of the adjacent handrails 20 are also elastically stretched, and the first rope 41 thereof is retracted into the handrail 20, and the adjacent handrails 20 also move toward the second side B. Further, the elastic ends of the elastic retractable rope units 30 of the remaining handrails 20 are also elastically stretched, and the remaining handrails 20 move toward the second side B, and each handrail 20 moves toward the retracted state until each handrail 20 fits against each other.

[0041] It can be seen that each railing 20 of the present invention is configured with elastic retractable rope units 30 at both ends thereof, and the adjacent elastic retractable rope units 30 on the same side are connected by the first cable 41, so that when the railing 20 is unfolded, the railing 20 on one side moves, which will drive the other railings 20 to move synchronously. When the railing 20 is fully unfolded, the elastic retractable rope units 30 of each railing 20 are restricted from releasing the ropes, so as to maintain rigidity at a certain relative distance, thereby achieving the function of protective enclosure. When the railing 20 is closed, the elastic retractable rope units 30 of each railing 20 release the elastic force and the first cable 41 is retracted into the railing 20, so that each railing 20 is closed more closely.

[0042] It is worth noting that, in this embodiment, preferably, the lengths of the first cables 41 are consistent, and the contact distances between the elastic ends and the fixed ends of the elastic retractable rope units 30 in the railings 20 are consistent, so that when fully deployed, the spacings between adjacent railings 20 are the same. Those skilled in the art can understand that in the above embodiments, the deployment and folding directions of the railings 20 can be configured as horizontal directions or vertical directions.

[0043] It is worth noting that those skilled in the art will appreciate that, in the above embodiment, the traction rope 42 can be omitted, and the user can manually drive the handrail 20 closest to the first side A to move, and similarly, the other handrails 20 will also be linked under the action of the elastic retractable rope unit 30. Those skilled in the art will also know that the traction rope 42 can be connected to a winch to achieve the expansion or closure of the handrail 20 by a crank or electric means.

[0044] like Figure 4 , Figure 5 and Figure 8 As shown, in order to further realize that each railing 20 maintains its posture when moving, in this embodiment, the push-pull type guardrail further includes a second cable 51 and a third cable 52. When there are at least two railings 20, at least one of the railings 20 is provided with a first pulley 61 and a second pulley 62 at both ends. In this embodiment, the two ends of the railing 20 closest to the first side A are provided with a first pulley 61 and a second pulley 62 respectively. Among them, one end of the second cable 51 is connected to the first side A of the frame 10, and the other end of the second cable 51 bypasses the first pulley 61 through the third side C, and then bypasses the second pulley 62, and then connects to the second side B of the frame 10 along the fourth side D. One end of the third cable 52 is connected to the first side A of the frame 10, and the other end of the third cable 52 bypasses the second pulley 62 through the fourth side D, and then bypasses the first pulley 61, and then connects to the second side B of the frame 10 along the third side C. Specifically, the first pulley 61 and the second pulley 62 are arranged on the elastic retractable rope unit 30 at both ends of the handrail 20 closest to the first side A. The elastic retractable rope unit 30 is provided with a fixed seat 31, and the first pulley 61 and the second pulley 62 are rotatably arranged on the fixed seat 31. It can be understood that the first pulley 61 and the second pulley 62 are respectively configured as a double rope groove structure to accommodate the second cable 51 and the third cable 52.

[0045] Those skilled in the art will appreciate that the second cable 51 is sequentially wound around the first pulley 61 and the second pulley 62, generating a counterclockwise torque on the handrail 20 closest to the first side A. The third cable 52 is sequentially wound around the second pulley 62 and the first change wheel, generating a clockwise torque on the handrail 20 closest to the first side A. The second cable 51 cooperates with the first cable 41 to keep the handrail 20 closest to the first side A in a moving posture. At the same time, when the handrail 20 closest to the first side A moves toward the second side B, the length of the second cable 51 near the third side C increases, the length of the third cable 52 near the fourth side D decreases, and the length near the fourth side D decreases, while the first pulley 61 rotates counterclockwise. The length of the second cable 51 near the fourth side D decreases, the length of the third cable 52 near the fourth side D increases, and the second change wheel rotates clockwise, thereby achieving smooth movement of the handrail 20 closest to the first side A. Similarly, when the railing 20 closest to the first side A moves toward the first side A, the first pulley 61 rotates clockwise and the second pulley 62 rotates counterclockwise, and the railing 20 can maintain its posture during movement.

[0046] It can be understood that, taking the railing 20 closest to the first side A moving toward the second side B as an example, the same is true for the movement toward the first side A. The railing 20 closest to the first side A can maintain a posture perpendicular to the third side C and the fourth side D when moving, and can move smoothly in a rolling manner. Further, since the railing 20 closest to the first side A can maintain its posture when moving, the elastic retractable rope units 30 at both ends of the railing 20 closest to the first side A maintain an equal retracted length during the movement. Due to the transmission of the tension of the first cable 41, the retracted lengths of the elastic retractable rope units 30 at both ends of the adjacent railings 20 are also the same, so that the adjacent railings 20 and other railings 20 can maintain their postures when moving.

[0047] Therefore, in this embodiment, taking the horizontal expansion and closure of the railing 20 as an example, when the user pushes the railing 20 closest to the first side A to move, regardless of whether the force is at the center point, the railing 20 and the remaining railings 20 will maintain a vertical posture, and the movement of the railing 20 closest to the first side A is supported by the rolling pulley, making the movement process smoother.

[0048] like Figures 9 to 11 As shown, in this embodiment, the elastic cord-releasing unit 30 includes a fixed seat 31 , a movable seat 32 , a first elastic member 33 , an adjusting rod 34 and a cover plate 35 .

[0049] In detail, the first elastic member 33 is configured as a coil spring. In other embodiments, the first elastic member 33 can also be configured as an elastic body made of elastic materials such as rubber, or a gas / liquid elastic element, or other springs such as shrapnel. The railing 20 is a square hollow structure. The cross-sectional shape of the movable seat 32 is roughly square, but the size is smaller than the cross-sectional shape of the railing 20, so that it can be slidably matched and arranged in the railing 20. The fixed seat 31 is arranged at the end of the railing 20. The two ends of the first elastic member 33 are respectively fixedly connected to the movable seat 32 and the fixed seat 31; the fixed seat 31 is provided with two first guide rope holes 311 for the movement of the first cable 41.

[0050] Specifically, a column structure is provided at the bottom of the movable seat 32, and a long screw hole is provided on the column structure, and the adjustment rod 34 is connected to the screw hole of the movable seat 32. The adjustment rod 34 can be screwed into different screw hole depths, so that the extension length of the adjustment rod 34 to the fixed seat 31 is adjusted, so that the distance between the movable seat 32 and the fixed seat 31 can be adjusted.

[0051] In detail, a rope winding groove 321 is provided on one side of the movable seat 32 away from the first elastic member 33, and the rope winding groove 321 extends in an S shape. The cable can be wound into the rope winding groove 321, and the cable wound in the rope winding groove 321 can still remain fixed under the action of tension. The cover plate 35 is provided on the movable seat 32 by bolts and covers the rope winding groove 321, so that the wound cable is further constrained in the rope winding groove 321. The cable extends to one side and is connected to another elastic rope retracting unit 30 to form a first cable 41; the cable extends to the other side and is connected to another elastic rope retracting unit 30 to form another first cable 41, so that two adjacent first cables 41 on the same side are formed by winding a continuous cable.

[0052] It is worth noting that, in this embodiment, the number of railings 20 in the frame 10 can be dynamically adjusted. To this end, some of the railings 20 can be removed from the frame 10, so that the total number of railings 20 is reduced, the spacing between adjacent railings 20 is increased, and a better field of vision is obtained. Similarly, more railings 20 can be added to the existing railings 20, so that the total number of railings 20 is increased, the spacing between adjacent railings 20 is reduced, and a more compact protection area is obtained. To this end, the fixed seat 31 is relatively provided with at least two buckle arms 313, and the side wall near the end of each railing 20 is provided with a number and position of the buckle holes matching the buckle arms 313, so that the fixed seat 31 is clamped to the railing 20. When disassembling, the fixed seat 31 can be pulled out from the railing 20, and then the first elastic member 33 and the movable seat 32 can be taken out from the railing 20, and the first cable 41 can be removed from the movable seat 32, so that part of the railing 20 can be removed from the frame 10. Similarly, by reverse operation, the elastic retractable rope unit 30 can be installed back to the two ends of the handrail 20 .

[0053] As described in the above embodiment, each first cable 41 can be formed by a continuous cable being fixed on each movable seat 32 in a winding manner in one direction. For example, if 6 railings 20 are disassembled into 5 railings 20, the railing 20 closest to the second side B is disassembled, and the first cable 41 of the continuous cable used to wind the disassembled railing 20 will be redundant. Shortening the continuous cable at this time will result in insufficient length of the continuous cable when adding railings 20 again. At the same time, when a railing 20 is disassembled, the elastic retractable line unit of the new railing 20 closest to the second side B can only retract part of the first cable 41, and the redundant first cable 41 cannot be retracted into the railing 20, resulting in a wide interval between the new railing 20 closest to the second side B and the first rod frame 11 of the second side B, which cannot be closed and affects the open space of the frame 10.

[0054] To this end, in this embodiment, two sliders 91 that can slide along the second rod frame 12 are provided on the first rod frame 11 near the second side B. The first cable 41 connected to the elastic retractable rope unit 30 of the third side C of the handrail 20 closest to the second side B is fixed to the slider 91 close to the third side C, and the first cable 41 connected to the elastic retractable rope unit 30 of the fourth side D of the handrail 20 closest to the second side B is fixed to the slider 91 located close to the fourth side D. In other words, the redundant end of the continuous cable of the third side C can be fixed to the slider 91 close to the third side C, and the redundant end of the continuous cable of the fourth side D can be fixed to the slider 91 close to the fourth side D.

[0055] like Figure 4 and Figure 5 As shown, the second side B of the frame 10 is provided with a first rod frame 11, and two sliders 91 are arranged in the first rod frame 11 of the second side B. The first rope 41 connected to the elastic retractable rope unit 30 at the left end of the handrail 20 closest to the second side B is fixed to the left slider 91, and the first rope 41 connected to the elastic retractable rope unit 30 at the right end of the handrail 20 closest to the second side B is fixed to the right slider 91, and the two sliders 91 are connected by a second elastic member 92. In other words, the redundant section of the continuous rope near the third side C can be fixed on the corresponding slider 91, and the redundant section of the continuous rope near the fourth side D can also be fixed on the corresponding slider 91. For the continuous ropes on both sides, since the second elastic member 92 is arranged between the sliders 91. When each handrail 20 is in the unfolded state, the continuous rope in the second side B of the frame 10 is released, and under the action of the second elastic member 92, the redundant continuous rope in the second side B of the frame 10 will be fixed on the slider 91. Similarly, when each handrail 20 is in the expanded and closed state, under the action of the second elastic member 92, the continuous cable in the second side B of the frame 10 is released, and the continuous cable pulled out due to the expansion will be retracted into the second side B of the frame 10.

[0056] refer to Fig.12 , the two outer sides of the slider 91 are provided with limiting grooves, and the first rod frame 11 of the second side B is also provided with a receiving groove, and the receiving groove is provided with a limiting convex rail, so that the slider 91 can slide left and right on the first rod frame 11 of the second side B. An annular groove 911 is provided between the two limiting grooves of the slider 91, and a through hole 912 is provided at the bottom of the annular groove 911. When in use, the end of the continuous cable can pass through the through hole 912, go around the annular groove 911 for several turns, and finally be fixed in the second guide rope hole 131 of the corner connector 13 through the cable clamp. After the continuous cable goes around the annular groove 911, it will be fixed to the slider 91. Among them, the two sliders 91 are connected by a second elastic member 92. The second elastic member 92 can be an elastic rope made of elastic materials such as rubber, or a metal spring such as a spiral spring, or a gas / liquid elastic element. When each railing 20 is in the deployed state, the first cable 41 is pulled outside the first rod frame 11 on the second side B, the two sliders 91 are pulled close to the third side C and the fourth side D, and the second elastic member 92 is stretched. When each railing 20 is in the closed state, the second elastic member 92 is shortened, the two sliders 91 are pulled away from the third side C and the fourth side D, and the first cable 41 is pulled back into the first rod frame 11 on the second side B.

[0057] It can be understood that the first side A, the second side B, the third side C and the fourth side D of the frame 10 described in the present application are not meant to be composed of entities, and they can be replaced by the entity structure of the installed door or window.

[0058] Specifically, in this embodiment, Figures 1 to 5 As shown, the first side A and the second side B of the frame 10 are respectively provided with a first rod frame 11, and the third side C and the fourth side D of the frame 10 are respectively provided with a second rod frame 12. The two first rod frames 11 are parallel to each other, the two second rod frames 12 are parallel to each other, and the second rod frames 12 are perpendicular to the first rod frames 11. The first rod frames 11 and the second rod frames 12 are configured as a hollow structure. The ends of the first rod frames 11 and the ends of the second rod frames 12 are connected by an angle connector 13.

[0059] The corner connector 13 is provided with a second rope guide hole 131, and the first rod frame 11 is provided with a plurality of cable fixing holes 81. One end of the second cable 51 passes through the second rope guide hole 131 of the corner connector 13 on the first rod frame 11 on the first side A, passes through the cable fixing hole 81 on the first rod frame 11 on the first side A, and is connected to the cable clamp 82. The other end of the second cable 51 passes through the second rope guide hole 131 of the corner connector 13 on the lower side of the first rod frame 12 on the first side B, and is connected to the cable clamp 82. One end of the third cable 52 passes through the second rope guide hole 131 of the corner connector 13 on the lower side of the first rod frame 11 on the first side A, passes through the cable fixing hole 81 on the lower side of the first rod frame 11 on the first side A, and is connected to the cable clamp 82. The other end of the third cable 52 passes through the second rope guide hole 131 of the corner connector 13 on the first rod frame 12 on the first side B, and is connected to the cable clamp 82. Thus, the second cable 51 and the third cable 52 are kept in a tension state, providing support for the posture maintenance of the handrail 20 .

[0060] Specifically, in this embodiment, Figures 1 to 5 As shown, the second rod frame 12 is provided with a receiving groove 121, and the end of the handrail 20 is arranged in the receiving groove 121 of the second rod frame 12. Therefore, each of the first cable 41, the second cable 51, the third cable 52, and the elastic retractable rope unit 30 exposed at the fixing seat 31 of the handrail 20 can be hidden in the receiving groove 121, thereby protecting the cables and providing a wide view.

[0061] refer to Fig.10 , wherein the first side A and the second side B of the frame 10 are provided with a first rod frame 11, and the third side C and the fourth side D of the frame 10 are provided with a second rod frame 12. The first side A and the second side B are in the horizontal direction, and the third side C and the fourth side D are in the vertical direction. The fixing seat 31 of each railing protrudes from the end of the railing. A receiving groove 121 is provided in each second rod frame 12, and the fixing seat 31 of each railing 20 can be slidably and hidden in the receiving groove 121. Elastic arms 314 are provided on both sides of the fixing seat 31 of the elastic retractable rope unit 30 of each railing 20, and the elastic arms 314 are elastically abutted against both sides of the receiving groove 121 respectively. Thus, the railing 20 is in contact with the accommodating groove 121 through the elastic arm 314 on the fixed seat, and a friction force is formed between the railing 20 and the accommodating groove 121, which can offset the self-gravity of the railing 20 arranged in the vertical direction, and avoid the first cable 41 being pulled out due to gravity factors in the closed state, so that the railing 20 can maintain the closed state.

[0062] Among them, the side wall of the receiving groove 121 of the second rod frame 12 is provided with a limiting convex rail 122, and the fixing seat 31 of the elastic retractable rope unit 30 is provided with a limiting groove 312. The limiting convex rail 122 and the limiting groove 312 cooperate with each other so that the two ends of the handrail 20 are constrained to slide between the two second rod frames 12. It can be understood that each handrail 20 is arranged on the limiting convex rail 122 through the limiting groove 312, mainly to facilitate assembly and provide support in extreme postures. Each handrail 20 mainly realizes linkage and posture maintenance through the cooperation between the first pulley 61, the second pulley 62, the first cable 41, the second cable 51 and the third cable 52.

[0063] Specifically, in this embodiment, Figures 1 to 5 As shown, the railing 20 closest to the first side A is provided with a locking bolt 71; the first side A of the frame 10 is provided with a locking hole 72, and the locking bolt 71 and the locking hole 72 cooperate with each other to lock the railing 20 closest to the first side A to the first side A of the frame 10. The elastic end limit stroke of the elastic retractable rope unit 30 matches the locking position of the railing 20 closest to the first side A, so that when the railing 20 closest to the first side A is locked to the first side A of the frame 10, the elastic end of the elastic retractable rope unit 30 of each railing 20 abuts against the fixed end to limit the position. Therefore, when the railing 20 is fully unfolded, the railing 20 closest to the first side A is fixed, further realizing the fixation of the positions of other railings 20, and providing a stable rigid protective structure.

[0064] The above embodiments mainly describe the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A push-pull guardrail, comprising: A frame (10) having a first side (A), a second side (B) opposite to the first side (A), and a third side (C) and a fourth side (D) located at both ends of the first side (A) and the second side (B); and A railing (20) is movably arranged between a third side (C) and a fourth side (D) of the frame (10) in the direction of the first side (A) and the second side (B); characterized in that: The two side ends of the railing (20) are respectively provided with elastic retractable rope units (30), and the elastic retractable rope unit (30) has a fixed end and an elastic end, the fixed end of the elastic retractable rope unit (30) is connected to the end of the railing (20), and the elastic end of the elastic retractable rope unit (30) extends toward the middle of the railing (20); the elastic end of the elastic retractable rope unit (30) of the railing (20) is connected to the elastic end of the elastic retractable rope unit (30) of another adjacent railing (20) on the same side through a first rope cable (41), and / or the elastic end of the elastic retractable rope unit (30) of the railing (20) is connected to the second side (B) of the adjacent frame (10) through the first rope cable (41); When the handrail (20) moves toward the first side (A), the first cable (41) is pulled outside the handrail (20), and the elastic end of the elastic retractable rope unit (30) is elastically compressed; When the handrail (20) moves toward the second side (B), the elastic end of the elastic retractable rope unit (30) stretches elastically, and the first rope (41) is retracted into the handrail (20).

2. A push-pull type guardrail according to claim 1, characterized in that: The elastic retractable rope unit (30) further comprises an adjusting rod (34), wherein the adjusting rod (34) is connected to a fixed end or an elastic end of the elastic retractable rope unit (30), so that the distance between the fixed end and the elastic end of the elastic retractable rope unit (30) can be adjusted; When the handrail (20) moves to the first side (A) to a set distance, the elastic end of the elastic retractable rope unit (30) and the fixed end of the elastic retractable rope unit (30) are in contact with each other via the adjusting rod (34).

3. A push-pull type guardrail according to claim 1, characterized in that: The elastic rope retracting unit (30) comprises a fixed seat (31), a movable seat (32) and a first elastic member (33); the railing (20) is a hollow structure; the movable seat (32) can be slidably arranged inside the railing (20); the fixed seat (31) is arranged at the end of the railing (20); the two ends of the first elastic member (33) are respectively fixedly connected to the movable seat (32) and the fixed seat (31); the fixed seat (31) is provided with two first rope guide holes (311) for the first cable (41) to move.

4. A push-pull type guardrail according to claim 3, characterized in that: A second rod frame (12) is respectively provided on the third side (C) and the fourth side (D) of the frame (10), the second rod frame (12) is provided with a receiving groove (121), and elastic arms (314) are respectively provided on both sides of the fixing seat (31), and the elastic arms (314) are elastically abutted against both sides of the receiving groove (121).

5. A push-pull type guardrail according to claim 3, characterized in that: The elastic rope retracting and releasing unit (30) comprises a cover plate (35), a rope winding groove (321) is arranged on a side of the movable seat (32) away from the first elastic member (33), two adjacent first ropes (41) on the same side are composed of a continuous rope fixed to the rope winding groove (321) and extending from both sides of the rope winding groove (321), and the cover plate (35) is arranged on a side of the movable seat (32) away from the first elastic member (33) and covers the rope winding groove (321) to fix the rope inside the rope winding groove (321).

6. A push-pull type guardrail according to claim 1 or 5, characterized in that: A first rod frame (11) is provided on the second side (B) of the frame (10), and two sliders (91) are provided in the first rod frame (11) on the second side (B); a first cable (41) connected to the elastic retractable rope unit (30) on the third side of the handrail (210) closest to the second side is fixed to one of the sliders (91), and a first cable (41) connected to the elastic retractable rope unit (30) on the fourth side of the handrail closest to the second side is fixed to the other slider (91); and the two sliders (91) are connected via a second elastic member (92).

7. The push-pull type guardrail according to claim 1, characterized in that: The railing (20) is configured with at least two railings, and at least one of the railings (20) is provided with a first pulley (61) and a second pulley (62) at both ends thereof, respectively. The push-pull type guardrail further comprises: A second cable (51), one end of the second cable (51) is connected to the first side (A) of the frame (10), the other end of the second cable (51) passes through the third side (C) around the first pulley (61), passes through the second pulley (62), and is connected to the second side (B) of the frame (10) through the fourth side (D); A third cable (52), one end of the third cable (52) is connected to the first side (A) of the frame (10), the other end of the third cable (52) passes around the second pulley (62) via the fourth side (D), and then passes around the first pulley (61), and is connected to the second side (B) of the frame (10) along the third side (C).

8. A push-pull type guardrail according to claim 7, characterized in that: The first pulley (61) and the second pulley (62) are respectively arranged on the elastic rope retracting and releasing units (30) at both ends of the handrail (20) closest to the first side (A); A first rod frame (11) is provided on the first side (A) and the second side (B) of the frame (10), and a second rod frame (12) is provided on the third side (C) and the fourth side (D) of the frame (10), respectively. The first rod frame (11) and the second rod frame (12) are configured as a hollow structure and are connected by an angle connector (13). The angle connector (13) is provided with a second rope guide hole (131), and the second cable (51) and the third cable (52) pass through the second rope guide hole (131). A rope fixing hole (81) is provided inside the first rod frame (11), and the end of the second cable (51) and / or the end of the third cable (52) pass through the rope fixing hole (81) and are connected to the rope clamp (82).

9. The push-pull type guardrail according to claim 1, characterized in that: The handrail (20) is configured with at least two elastic retractable rope units (30), the elastic end of the elastic retractable rope unit (30) of the handrail (20) closest to the second side (B) is fixedly connected to the frame (10) through a first cable (41), and the elastic end of the elastic retractable rope unit (30) of the handrail (20) closest to the first side (A) is connected to a traction cable (42); The railing (20) closest to the first side (A) is provided with a locking bolt (71); the first side (A) of the frame (10) is provided with a locking hole (72), and the locking bolt (71) and the locking hole (72) cooperate with each other so that the railing (20) closest to the first side (A) is locked to the first side (A) of the frame (10); the elastic end limit stroke of the elastic retractable rope unit (30) matches the locking position of the railing (20) closest to the first side (A), so that when the railing (20) closest to the first side (A) is locked to the first side (A) of the frame (10), the elastic end of the elastic retractable rope unit (30) of each railing (20) abuts against the fixed end for limiting position.

10. The push-pull type guardrail according to claim 1, characterized in that: The third side (C) and the fourth side (D) of the frame (10) are respectively provided with a second rod frame (12), the second rod frame (12) is provided with a receiving groove (121), the end of the railing (20) is arranged in the receiving groove (121) of the second rod frame (12), the side wall of the receiving groove (121) of the second rod frame (12) is provided with a limiting convex rail (122), and the fixed end of the elastic retractable rope unit (30) is provided with a limiting groove (312); the limiting convex rail (122) and the limiting groove (312) cooperate with each other to constrain the two ends of the railing (20) to slide between the two second rod frames (12).

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