Safety devices for switchgear and switchgear

Abstract

To provide a safety device for an opening / closing device which is capable of relieving impact upon collision thereto and which is improved in durability.SOLUTION: A safety device 10 for an opening / closing device 1 includes a moving part 721 which can open / close an opening part 20a by an opening / closing movement of a door body 30 and moves by the opening / closing movement of the door body 30, and a stopper part 80 with which the moving part 721 collides so as to temporarily stop the opening / closing operation of the door body 30 when the door body 30 is moved at a specified speed or more, the stopper part 80 having a metallic part 82 with which the moving part 721 collides and a buffer material 83 disposed on the side opposite to the moving part 721 in the metallic part 82.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present disclosure relates to a safety device for a switchgear device. [Background technology]

[0002] Conventionally, there is known a safety device for an opening and closing device that can prevent fingers from getting pinched when the door body is closed faster than a predetermined speed (see, for example, Patent Document 1). The safety device for an opening and closing device described in Patent Document 1 prevents fingers from getting pinched by having an arm attached to the door body collide with a stopper part attached to the frame, thereby stopping the door body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-57737 Summary of the Invention [Problem to be solved by the invention]

[0004] In safety devices for opening and closing devices, if the stopper is made only of metal, the metal material of the stopper directly hits the arm, which poses durability issues and tends to make the sound of the collision louder. On the other hand, if a buffer material is attached to the surface of the stopper that the arm hits, the durability of the buffer material also poses an issue.

[0005] An object of the present disclosure is to provide a safety device for an opening and closing device that can mitigate impact during a collision and has improved durability. [Means for solving the problem]

[0006] The present disclosure relates to a safety device for an opening and closing device capable of opening and closing an opening by opening and closing movement of a door body, the safety device comprising: a moving part that moves as the door body is opened and closed; and a stopper part with which the moving part collides so as to temporarily stop the opening and closing operation of the door body when the door body is moved at a predetermined speed or faster, the stopper part having a metal part with which the moving part collides, and a buffer material that is arranged on the metal part opposite to the moving part side. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a front view of an opening and closing device according to a first embodiment as viewed from the outdoor side. [Figure 2] 1 is a view of a safety device for an opening and closing device according to a first embodiment, as seen from the outdoor side. [Figure 3] 1 is a view of a safety device for an opening and closing device according to a first embodiment, viewed from diagonally above on the outdoor side. [Figure 4] FIG. 10 is a perspective view showing a state in which the bottom cover portion is removed from the stopper portion. [Figure 5] 4 is a cross-sectional view taken along line AA in FIG. 3, showing a cross-sectional view of the stopper portion. [Figure 6] 5 is a cross-sectional view showing a state in which the arm portion collides with the stopper portion from the state shown in FIG. 4. FIG. [Figure 7] FIG. 10 is a diagram illustrating the operation of the safety device of the first embodiment, in which the tip of the arm plate moves downward midway to advance the inner sash. [Figure 8] 10 is a diagram illustrating the operation of the safety device of the first embodiment, in which the tip of the arm plate collides with the stopper portion and the inner sash screen temporarily stops. FIG. [Figure 9] 5A and 5B are diagrams illustrating the operation of the operating arm returning along the return movement path in the safety device of the first embodiment. [Figure 10] FIG. 10 is a view of a safety device for an opening and closing device according to a second embodiment, as seen from the outdoor side. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, a first embodiment of the present disclosure will be described with reference to the drawings. In this specification, the term "visible direction" refers to the face direction of the glass of a shoji screen placed in the opening 20a of a frame 20 arranged in a building, and the term "visible direction" refers to the thickness direction of the glass (i.e., the depth direction, the indoor / outdoor direction). In the drawings, the outdoor side is referred to as the outdoor side Y1, and the indoor side is referred to as the indoor side Y2.

[0009] The opening and closing device 1 of this embodiment is a so-called sliding window, and as shown in Fig. 1, comprises a frame body 20, an inner shoji screen 30 (door body) and an outer shoji screen 40 fitted in the frame body 20 so as to be able to open and close, and a safety device 10. The opening and closing device 1 can open and close the opening 20a by opening and closing the inner shoji screen 30 and the outer shoji screen 40 in the left-right direction X. The safety device 10 is for use with the opening and closing device 1.

[0010] The frame body 20 is framed in a rectangular shape by an upper frame 21, a lower frame 22, and left and right vertical frames 23, 24. The inner shoji screen 30 and the outer shoji screen 40 are both sliding doors, and by sliding them in the front direction, the opening 20a of the frame body 20 is opened or closed, forming a so-called sliding window.

[0011] As shown in Figure 1, the inner shoji screen 30 is composed of a rectangular frame body 35 formed by a long upper frame 31, a lower frame 32, and left and right vertical frames, the inner frame 33 and the door edge frame 34, and glass 36 fitted and fixed within the frame body 35.

[0012] As shown in Figure 1, the outer shoji screen 40 is composed of a rectangular frame body 45 formed by a long upper frame 41, a lower frame 42, and left and right vertical frames, i.e., a door outer frame 43 and a door end frame 44, and glass 46 fitted and fixed within the frame body 45.

[0013] The safety device 10 will now be described. In this embodiment, the left-right direction of the opening and closing device 1 in FIG. 1 is referred to as the left-right direction X. The left-right direction X of the opening and closing device 1 is also the lateral direction of the inner shoji screen 30. One side of the opening and closing device 1 in the left-right direction X (the left side in FIG. 1) is referred to as the X1 side, and the other side in the left-right direction X (the right side in FIG. 1) is referred to as the X2 side. The up-down direction is referred to as the up-down direction Z. The direction in which the inner shoji screen 30 is closed on the X2 side of the frame body 20 (the right side in FIG. 1) (the direction in which it is moved from the X1 side to the X2 side) is referred to as the first movement direction D1, and the direction in which the inner shoji screen 30 is opened on the X2 side of the frame body 20 (the right side in FIG. 1) (the direction in which it is moved from the X2 side to the X1 side) is referred to as the second movement direction D2.

[0014] The safety device 10 is equipped with a finger pinch prevention mechanism. As shown in Figs. 1 to 3, the safety device 10 comprises a safety device main body 60 and an operating arm portion 70. The safety device main body 60 is fixed to the end portion on the X2 side in the left-right direction X of the upper frame 21 of the frame body 20, and is thereby fixed to the upper portion of the X2 side in the left-right direction X of the opening 20a. The operating arm portion 70 is fixed to the X2 side in the left-right direction X of the upper frame 31 of the inner shoji screen 30, and is thereby fixed to the upper portion of the X2 side of the inner shoji screen 30 in the left-right direction X.

[0015] 2 and 3, the safety device main body 60 has a base member 61, an introduction / exit guide section 62, a return opening / closing plate 63 (opening / closing section), a path extension plate 64, and a stopper section 80. The safety device main body 60 also has a first movement path K1 (upstream path), a fall guide communication section 65 (guidance section), a second movement path K2 (downstream path), and a return movement path K3 (return path) as movement paths along which the tip end 721 of the arm plate 72 of the operation arm section 70 moves.

[0016] The base member 61 has an upper component 611 and side panels 612. The upper component 611 is fixed to the upper frame 21. The upper component 611 has a thickness in the up-down direction, a width in the projection direction, and is formed to extend in the left-right direction X. The side panels 612 extend downward from the end of the upper component 611 on the indoor side Y2 in the projection direction, and are formed to extend in the left-right direction X with a width in the up-down direction Z. A first movement path K1, a drop guide communication section 65, a second movement path K2, and a return movement path K3 are formed below the upper component 611.

[0017] The first movement path K1 is a path that passes over the upper surface side of the inlet-side inclined guide portion 621 of the inlet / outlet guide portion 62, the upper surface side of the intermediate flat guide portion 622, the upper surface side of the return opening / closing plate 63, and the upper surface side of the path extension plate 64, and reaches the stopper portion 80. The first movement path K1 is a path along which the tip portion 721 of the arm plate 72 of the operation arm portion 70 can move in the first movement direction D1 when the tip portion 721 of the arm plate 72 of the operation arm portion 70 moves toward the stopper portion 80.

[0018] The second movement path K2 is formed to communicate with the lower part of the end part on the X2 side in the left-right direction X of the first movement path K1 via a fall guide communication part 65 formed at the lower part of the end part on the X2 side in the left-right direction X of the first movement path K1, and extends from the lower part of the end part on the X2 side in the left-right direction X of the first movement path K1 to the X2 side in the left-right direction X. The second movement path K2 is a path along which the tip part 721 of the arm plate 72 of the operation arm part 70, guided by the fall guide communication part 65, can move in the first movement direction D1.

[0019] The return movement path K3 is formed by extending from an end side of the second movement path K2 opposite to the end side on the first movement direction D1 side toward the first movement path K1, and is a path that merges with the first movement path K1 midway. The return movement path K3 passes below the path extension plate 64, the upper surface side of the return-side inclined guide portion 623 of the lead-in / out guide portion 62, and below the return opening / closing plate 63, and merges with the first movement path K1 midway as the tip portion 721 of the arm plate 72 of the operation arm portion 70 pushes up the return opening / closing plate 63 from below.

[0020] The inlet / outlet guide portion 62 is disposed on the lower side of the X1 side in the left-right direction X on the outdoor-side Y1 surface of the side panel 612 of the base member 61. The inlet / outlet guide portion 62 has an inlet-side inclined guide portion 621, an intermediate flat guide portion 622, and a return-side inclined guide portion 623.

[0021] The entrance-side inclined guide portion 621 is disposed on the X1 side in the left-right direction X, which is the entrance side of the safety device main body 60, and extends at an incline from the lower side to the upper side as it moves from the X1 side to the X2 side in the left-right direction X. The intermediate flat guide portion 622 extends horizontally from an end portion on the X2 side in the left-right direction X of the entrance-side inclined guide portion 621 toward the X2 side in the left-right direction X for a predetermined length. The return-side inclined guide portion 623 is disposed on the X2 side in the left-right direction X of the intermediate flat guide portion 622, and extends at an incline from the end portion on the X2 side in the left-right direction X of the intermediate flat guide portion 622 toward the X2 side in the left-right direction X.

[0022] The return opening / closing plate 63 is formed in the shape of a plate extending horizontally in the left-right direction X and is elastically deformable. The return opening / closing plate 63 is arranged above the return-side inclined guide portion 623 of the inlet / outlet guide portion 62. A base end of the return opening / closing plate 63 on the X2 side in the left-right direction X is connected to an end of the path extension plate 64 on the X1 side in the left-right direction X. The path extension plate 64 is fixed to the side plate 612 of the base member 61 on the indoor side Y2 in the looking direction, and is formed in the shape of a flat plate extending in the left-right direction X. The path extension plate 64 extends on the same plane as the return opening / closing plate 63.

[0023] The return opening / closing plate 63 is positioned at the point where the first movement path K1 and the return movement path K3 converge, and when the tip 721 of the arm plate 72 of the operating arm unit 70 moves along the first movement path K1, it closes the return movement path K3 to form the first movement path K1, and when the tip 721 of the arm plate 72 of the operating arm unit 70 moves from the return movement path K3 to the first movement path K1, the tip 721 of the arm plate 72 of the operating arm unit 70 is pushed up from below, temporarily elastically deforming upward, thereby opening the path along which the tip 721 of the arm plate 72 of the operating arm unit 70 moves from the return movement path K3 to the first movement path K1.

[0024] The stopper portion 80 is disposed at the end of the first moving path K1 on the X2 side in the left-right direction X. The stopper portion 80 is fixed to the underside of the upper constituent portion 611 of the base member 61. When the inner shoji screen 30 is moved at a speed equal to or greater than a predetermined speed, the tip portion 721 of the arm plate 72 of the operating arm portion 70 collides with the stopper portion 80 to temporarily halt the opening and closing operation of the inner shoji screen 30.

[0025] As shown in Figures 4 to 6, the stopper portion 80 has a pair of side plates 81, a movable collision metal member 82 (metal portion), a buffer material 83, a guide tube 84, a buffer material regulating portion 85, and a lower surface lid portion 86 (lid portion).

[0026] The pair of side plates 81 are formed in the shape of plates extending downward from both ends in the projection direction of the upper constituent portion 611 of the base member 61. The pair of side plates 81 are arranged apart in the projection direction and extend in the left-right direction X.

[0027] The tip 721 of the arm plate 72 of the operating arm unit 70 collides with the movable collision metal member 82. The movable collision metal member 82 is made of a metal material. The movable collision metal member 82 is fixed to the base member 61 on the X1 side in the left-right direction X of a pair of side plates 81 below the upper constituent part 611 of the base member 61 so as to be movable in the left-right direction X. The movable collision metal member 82 is configured to be movable to the X2 side in the left-right direction X (towards the buffer material 83) when it collides with the tip 721 of the arm plate 72 of the operating arm unit 70.

[0028] The movable collision metal member 82 is configured by stacking an L-shaped member 821 and a flat member 825 one above the other and connecting them by a connecting tube 82a. The L-shaped member 821 has a plate-like collision plate 822 extending in the up-down direction Z and the forward direction, and an extension plate 823 extending from the upper end of the collision plate 822 to the X2 side in the left-right direction X. The flat member 825 is arranged below the extension plate 823, stacked on top of it.

[0029] The collision plate 822 has a collision surface facing the X1 side in the left-right direction X. A portion of the collision plate 822 that collides with the tip 721 of the arm plate 72 constitutes a collision portion 822a. When the tip 721 of the arm plate 72 collides with the collision portion 822a of the stopper portion 80, the load applied by the tip 721 of the arm plate 72 collides with the collision portion 822a of the stopper portion 80 acts on the collision portion 822a.

[0030] An arm restricting portion 827 is provided above the front side of the collision plate 822. In this embodiment, the arm restricting portion 827 is formed by the lower surface of the upper constituent portion 611 of the base member 61. The arm restricting portion 827 restricts the tip portion 721 of the arm plate 72 from moving upward.

[0031] 2 and 3, a fall guide communication section 65 (guidance section) that communicates with the second movement path K2 is formed in the lower part of the collision plate 822 on the X1 side in the left-right direction X. The fall guide communication section 65 is formed by a gap between the lower end of the collision plate 822 and the end of the path extension plate 64 on the X2 side in the left-right direction X.

[0032] When the inner shoji screen 30 is moved at a speed greater than or equal to a predetermined speed, the tip 721 of the arm plate 72 collides with the stopper portion 80, temporarily stopping the opening and closing movement of the inner shoji screen 30, and then guides the tip 721 of the arm plate 72 downward (in the cross direction); when the inner shoji screen 30 is moved at a speed slower than the predetermined speed, the fall guide communication portion 65 guides the tip 721 of the arm plate 72 downward (in the cross direction) just before the stopper portion 80 without stopping the opening and closing movement of the inner shoji screen 30.

[0033] The length of the gap in the left-right direction X of the fall guide communication section 65 is a length that allows the tip pin 73 to pass through, and can be set to a length that allows the tip 721 of the arm plate 72 to collide with the collision plate 822 before the tip pin 73 falls from the gap in the fall guide communication section 65 when the inner screen 30 moves in the first movement direction D1 at a speed greater than or equal to a predetermined speed and the tip pin 73 is introduced into the safety device main body 60.

[0034] 4 to 6, an elongated hole 824 is formed in the L-shaped member 821 and the planar member 825, passing through both the L-shaped member 821 and the planar member 825 in the up-down direction. The elongated hole 824 extends a predetermined length in the left-right direction X.

[0035] A guide tube 84 (guide protrusion) protruding downward from the upper constituent part 611 of the base member 61 is disposed within the elongated hole 824. The upper end of the guide tube 84 is connected to the upper constituent part 611 of the base member 61. The elongated hole 824 is configured to be movable in the left-right direction X along the guide tube 84, so that the movable collision metal member 82 is movable in a direction toward the buffer material 83 within the range of the left-right direction X of the elongated hole 824. The elongated hole 824 and the guide tube 84 form a guide part that guides the movement of the movable collision metal member 82.

[0036] The cushioning material 83 is arranged on the X2 side of the movable collision metal member 82 in the left-right direction X. The cushioning material 83 is formed in a rectangular parallelepiped shape extending in the left-right direction X. The cushioning material 83 is made of, for example, a rubber material. The cushioning material 83 is arranged on the side of the movable collision metal member 82 opposite to the tip 721 side of the arm plate 72 of the operation arm section 70. The cushioning material 83 is arranged in contact with the movable collision metal member 82. As a result, the cushioning material 83 and the movable collision metal member 82 are arranged in contact with each other. The movable collision metal member 82 and the cushioning material 83 are arranged in this order from the tip 721 side of the arm plate 72 of the operation arm section 70.

[0037] The cushioning material 83 is disposed between the pair of side plates 81. A cushioning material restricting portion 85 is provided on the X2 side of the cushioning material 83 in the left-right direction X. The cushioning material restricting portion 85 is fixed to the lower surface of the upper constituent portion 611 of the base member 61. The cushioning material restricting portion 85 restricts movement of the cushioning material 83 toward the X2 side in the left-right direction X. The cushioning material restricting portion 85 is fastened together with the lower surface cover portion 86 by screws 88, which will be described later. As a result, the cushioning material 83 is disposed between the movable collision metal member 82 and the cushioning material restricting portion 85 in the left-right direction X, and is disposed between the pair of side plates 81 in the projection direction.

[0038] The buffer material 83 is disposed on the X2 side of the movable collision metal member 82 in the left-right direction X, and when the tip 721 of the arm plate 72 collides with and is pressed into the movable collision metal member 82, the buffer material 83 is crushed by the movable collision metal member 82 and contracts, absorbing the impact acting on the movable collision metal member 82 and reducing the impact. In this embodiment, the buffer material 83 is formed in a rectangular parallelepiped shape extending in the left-right direction X, and therefore can reduce the impact more significantly than, for example, a plate-shaped buffer material that is short in the left-right direction X. In this embodiment, the buffer material 83 returns to its original state from its contracted state when the load from the tip 721 of the arm plate 72 on the movable collision metal member 82 is removed.

[0039] The bottom cover 86 is disposed below the movable collision metal member 82 and the buffer material 83, and holds the movable collision metal member 82 and the buffer material 83 from below. The bottom cover 86 is fixed to the upper constituent part 611 of the base member 61 with screws 87 and 88 in a state where it is disposed below the movable collision metal member 82 and the buffer material 83. If the buffer material 83 becomes worn, for example, the buffer material 83 can be replaced by removing the bottom cover 86 from below the stopper part 80.

[0040] When fixing the bottom cover 86 below the cushioning material 83, the screw 87 is moved from bottom to top in the X1 side portion of the bottom cover 86, passing the screw 87 through the X1 side portion of the bottom cover 86 and the guide tube 84, and fixing the X1 side portion of the bottom cover 86 to the upper constituent part 611 of the base member 61. Furthermore, the screw 88 is moved from bottom to top in the X2 side portion of the bottom cover 86, passing the screw 88 through the X2 side portion of the bottom cover 86 and the cushioning material restricting part 85, and fixing the X2 side portion of the bottom cover 86 to the upper constituent part 611 of the base member 61.

[0041] As shown in Fig. 1, the operating arm portion 70 is disposed on the X2 side in the left-right direction X of the upper frame 31 of the inner shoji screen 30. When the inner shoji screen 30 is moved to the closing side on the X2 side in the left-right direction X, the operating arm portion 70 is introduced into the safety device main body 60. As shown in Figs. 2 and 3, the operating arm portion 70 has an operating side base member 71, an arm plate 72 (arm member), and a tip side pin 73 (guide portion).

[0042] 2 and 3, the operating-side base member 71 is formed to extend in the left-right direction X. The operating-side base member 71 is disposed at a position shifted toward the outside Y1 of the room from the lead-in / out guide portion 62, and moves in the left-right direction X along the lead-in / out guide portion 62 of the safety device main body 60 as the inner sash 30 moves in the left-right direction X.

[0043] The operation-side base member 71 has a bottom plate 711 and a pair of side plates 712. The bottom plate 711 is formed to have a width in the projection direction and to extend in the left-right direction X. The bottom plate 711 is formed to have a width in the projection direction and to extend in the left-right direction X. The pair of side plates 712 rise upward from both ends of the bottom plate 711 in the projection direction.

[0044] The arm plate 72 is formed in the shape of a long plate and is attached to the operating-side base member 71. The arm plate 72 is attached to the operating-side base member 71 at a position shifted toward the outside Y1 of the room relative to the lead-in / out guide portion 62, and moves in the left-right direction X along the lead-in / out guide portion 62 of the safety device main body 60 as the inner shoji screen 30 moves to open or close in the left-right direction X. The arm plate 72 extends in the left-right direction X before the operating arm portion 70 is introduced into the safety device main body 60.

[0045] The arm plate 72 is configured to be rotatable about a rotation axis J1. As shown in Fig. 7, the rotation axis J1 is located below a collision portion 822a of the collision plate 822 of the stopper portion 80 when viewed in the direction of the rotation axis J1. The collision portion 822a is a portion with which the tip end 721 of the arm plate 72 collides, and is a portion of the collision plate 822 of the stopper portion 80 against which a load acts when the tip end 721 of the arm plate 72 collides.

[0046] The base end side of the arm plate 72 is connected to the X1 side in the left-right direction X of the operating-side base member 71 so as to be rotatable around a rotation axis J1. A tip portion 721 (moving portion) is formed at the tip of the arm plate 72. The tip portion 721 is formed in an arc shape. A tip side pin 73 is provided at the tip side of the arm plate 72, protruding toward the indoor side Y2 in the viewing direction.

[0047] The tip side pin 73 is formed in a pin shape and protrudes from the indoor side Y2 surface of the arm plate 72 toward the indoor side Y2 at the tip side of the arm plate 72. When viewed in the forward direction, the tip side pin 73 is positioned closer to the base end of the arm plate 72, closer to the interior side than the tip portion 721 of the arm plate 72. The tip side pin 73 is rotatable around a central axis J2 extending in the forward direction.

[0048] The tip pin 73 is provided on the tip side of the arm plate 72, and when the operating arm portion 70 moves in the first movement direction D1, the arm plate 72 rotates about the rotation axis J1, and is moved along the upper surface of the lead-in / out guide portion 62. In this way, the tip pin 73 guides the movement of the tip portion 721 of the arm plate 72. The tip pin 73 guides the tip portion 721 of the arm plate 72 to move in the first movement direction D1 in which the inner shoji screen 30 moves and in the up-down direction Z of the inner shoji screen 30 (a direction intersecting the first movement direction D1).

[0049] The tip end 721 of the arm plate 72 is configured to be movable in a first movement direction D1 in which the inner shoji screen 30 moves as the inner shoji screen 30 opens and closes, by having the tip end pin 73 guided along the upper surface of the lead-in / out guide portion 62. The tip end 721 of the arm plate 72 is configured to be movable in the vertical direction while drawing an arc around the rotation axis J1 of the arm plate 72.

[0050] As a result, the tip 721 of the arm plate 72 is configured to be movable in a first movement direction D1 in which the inner shoji screen 30 moves as the inner shoji screen 30 moves to open or close, and is also movable in the vertical direction Z (a direction intersecting the first movement direction D1) of the inner shoji screen 30. When the tip side pin 73 is guided downward by the fall guide communicating portion 65, the tip 721 of the arm plate 72 is guided downward by its own weight.

[0051] Next, the operation of the safety device 10 for the opening and closing device 1 of this embodiment will be described. First, as shown in Figures 7 and 8, a case will be described in which the inner screen 30 is moved from the open position in the first movement direction D1 to close the inner screen 30.

[0052] By closing the inner shoji screen 30, the operating arm unit 70 attached to the inner shoji screen 30 is moved in the first movement direction D1 toward the safety device main body 60. As a result, as shown in the upper diagram of Fig. 7, the tip 721 of the arm plate 72 of the operating arm unit 70 is introduced into the safety device main body 60. The tip 721 of the arm plate 72 introduced into the safety device main body 60 is in a state where it can move in the vertical direction while drawing an arc around the rotation axis J1 of the arm plate 72.

[0053] When the inner sash 30 is closed at a speed slower than the predetermined speed, as shown in the upper diagram of FIG. 7, the tip end 721 of the arm plate 72 of the operating arm 70 introduced into the safety device main body 60 moves along the upper surface of the entrance-side inclined guide portion 621 of the entrance-side guide portion 62 in the first movement path K1, as the tip end pin 73 is guided by the entrance-side inclined guide portion 621 of the entrance-side guide portion 62. Then, as shown in the middle diagram of FIG. 7, the tip end pin 73 falls through the gap in the drop guide communicating portion 65, and the tip end 721 of the arm plate 72 either does not contact or does contact the collision plate 822 of the movable collision metal member 82, and as shown in the lower diagram of FIG. 7, the inner sash 30 moves in the first movement direction D1 without stopping. Then, as shown in the lower diagram of FIG. 7, the inner sash 30 moves in the first movement direction D1 and is closed.

[0054] A speed slower than the predetermined speed at which the inner shoji screen 30 can be closed without stopping means, for example, a speed slower than the speed at which the inner shoji screen 30 closes forcefully when closing the inner shoji screen 30. In this embodiment, when the inner shoji screen 30 is closed at a speed slower than the predetermined speed, the tip end 721 of the arm plate 72 does not collide forcefully with the collision plate 822 of the movable collision metal member 82, and the inner shoji screen 30 closes without stopping.

[0055] On the other hand, when the inner sash 30 is closed at a speed equal to or greater than a predetermined speed, the tip 721 of the arm plate 72 of the operating arm section 70 introduced into the safety device main body 60 moves along the upper surface of the entrance-side inclined guide section 621 of the introduction / exit guide section 62 in the first movement path K1, and collides with the collision section 822a of the collision plate 822 of the movable collision metal member 82 of the stopper section 80, as shown in the upper diagram of Figure 8. The collision section 822a is the part of the collision plate 822 of the movable collision metal member 82 of the stopper section 80 against which the load acts when the tip 721 of the arm plate 72 collides.

[0056] In this embodiment, a buffer material 83 is disposed on the X2 side in the left-right direction X of the collision plate 822 of the movable collision metal member 82 of the stopper portion 80. Therefore, as shown in the middle diagram of Fig. 8, when the tip portion 721 of the arm plate 72 of the operation arm portion 70 collides with and is pressed into the collision portion 822a of the collision plate 822 of the movable collision metal member 82, the buffer material 83 is crushed and contracted by the movable collision metal member 82, thereby absorbing the impact acting on the movable collision metal member 82 and alleviating the impact.

[0057] As shown in the middle diagram of FIG. 8 , the tip 721 of the arm plate 72 is positioned such that the rotation axis J1 at the base end of the arm plate 72 is lower than the collision portion 822a of the collision plate 822 of the movable collision metal member 82 of the stopper portion 80. Therefore, when the tip 721 of the arm plate 72 collides with the stopper portion 80, it is moved toward the X2 side in the left-right direction X of the first moving path K1, and a load acts diagonally upward when the tip 721 of the arm plate 72 collides with the stopper portion 80. In addition, the arm restricting portion 827 provided on the upper part of the front side of the collision plate 822 of the movable collision metal member 82 restricts the tip 721 of the arm plate 72 from moving upward. This makes it difficult for the tip 721 of the arm plate 72 to fall downward. Therefore, the state in which the tip 721 of the arm plate 72 collides with the stopper portion 80 is easily maintained, making it easy to temporarily stop the inner sash 30.

[0058] After that, the load acting diagonally upward on the tip end 721 of the arm plate 72, while colliding with the stopper portion 80, is released, and as shown in the lower diagram of Figure 8, the arm plate 72 rotates around the rotation axis J1 at the base end due to its own weight, and the tip end pin 73 falls through the gap in the drop guide communicating portion 65 and onto the second moving path K2 on the lower side. After the tip end 721 of the arm plate 72 is guided onto the second moving path K2, the buffer material 83 returns from its contracted state to its original state. As a result, the movable collision metal member 82 of the stopper portion 80 is returned to its original position. Then, as the tip end 721 of the arm plate 72 moves along the second moving path K2, the inner shoji screen 30 is moved in the first moving direction D1 and closed.

[0059] The predetermined speed or higher at which the inner screen 30 stops temporarily means, for example, a speed or higher at which the inner screen 30 would close forcefully if the safety device 10 were not present. In this embodiment, when the inner screen 30 closes at a predetermined speed or higher, the tip pin 73 collides with the collision plate 822 of the movable collision metal member 82, preventing the inner screen 30 from colliding forcefully with the vertical frame 24 of the frame body 20, and the inner screen 30 stops temporarily.

[0060] Next, a case where the inner shoji screen 30 is moved from the closed position shown in the upper part of FIG. 9 in the second movement direction D2 on the X1 side in the left-right direction X to open the inner shoji screen 30 will be described.

[0061] When opening the inner shoji screen 30, the inner shoji screen 30 is moved in the second movement direction D2 from the closed position shown in the upper part of Figure 9, and the operating arm section 70 is moved in the second movement direction D2 on the second movement path K2 and introduced into the return movement path K3.

[0062] The operating arm 70 introduced into the return path K3 moves along the return path K3 and merges with the first path K1. When the operating arm 70 moves from the return path K3 to the first path K1, as shown in the lower diagram of FIG. 9 , the tip pin 73 provided at the tip of the arm plate 72 moves along the return-side inclined guide portion 623 of the lead-in / out guide portion 62 and reaches the return opening / closing plate 63. When the tip pin 73 reaches the return opening / closing plate 63, it elastically deforms and pushes up the return opening / closing plate 63, opening the path from the return path K3 to the first path K1. Then, the operating arm 70 merges with the first path K1 and moves in the return direction, moving the inner door 30 in the second direction D2 and opening the inner door 30.

[0063] According to this embodiment, the following effects are achieved. In the safety device 10 for the opening and closing device 1 of this embodiment, the stopper portion 80 has a movable collision metal member 82 with which the tip portion 721 of the arm plate 72 of the operating arm portion 70 collides, and a buffer material 83 that is arranged on the movable collision metal member 82 on the side opposite to the tip portion 721 of the arm plate 72 of the operating arm portion 70. Therefore, the stopper portion 80 can absorb the impact acting on the movable collision metal member 82 with the buffer material 83, thereby reducing the impact at the time of collision. Furthermore, because the stopper portion 80 can absorb the impact acting on the movable collision metal member 82 with the buffer material 83, the durability of the movable collision metal member 82 and the buffer material 83 can be improved, and further, the impact noise caused by collision with the tip portion 721 of the arm plate 72 of the operating arm portion 70 can be reduced.

[0064] In addition, in this embodiment, the movable collision metal member 82 is configured to be able to move toward the buffer material 83 when it is hit by the tip end 721 of the arm plate 72 of the operating arm unit 70. This allows the movable collision metal member 82 to move a larger amount, thereby improving the amount of absorption of the impact acting on the movable collision metal member 82.

[0065] In addition, in this embodiment, the stopper portion 80 has a guide portion that guides the movement of the movable collision metal member 82. As a result, the guide portion can guide the movable collision metal member 82 toward the buffer material 83, so that the buffer material 83 can reliably absorb the impact.

[0066] In this embodiment, the guide portion has a guide tube 84 and an elongated hole 824 formed in the movable collision metal member 82 and movable along the guide tube 84. This allows the guide portion to be realized with a simple configuration.

[0067] In this embodiment, the stopper portion 80 has a bottom cover portion 86 that is disposed below the cushioning material 83 and holds the cushioning material 83 from below. As a result, the bottom cover portion 86 holds the cushioning material 83 from below, preventing the cushioning material 83 from falling. Furthermore, because the bottom cover portion 86 can be removed from below the stopper portion 80, maintenance such as replacing the cushioning material 83 can be easily performed.

[0068] Next, a second embodiment of the present disclosure will be described with reference to FIG. 10. The second embodiment differs from the first embodiment mainly in the configuration of the stopper portion 80A. In the description of the second embodiment, the same reference numerals will be used for components common to the first embodiment. Furthermore, the configuration of the second embodiment is the same as the configuration of the first embodiment unless otherwise described.

[0069] The second embodiment is different from the first embodiment mainly in the configuration of a collision metal member 891 of a stopper portion 80A. As shown in FIG. 10, the stopper portion 80A of the second embodiment has a collision metal member 891 (metal portion) and a buffer material 892.

[0070] The collision metal member 891 is formed, for example, in a plate shape, and is arranged on the stopper portion 80A closest to the operation arm portion 70. The tip portion 721 of the arm plate 72 of the operation arm portion 70 collides with the collision metal member 891. The collision metal member 891 is configured not to move in the left-right direction X.

[0071] The cushioning material 892 is formed, for example, in a plate shape, and is arranged on the side of the collision metal member 891 opposite the tip 721 of the arm plate 72 of the operation arm unit 70. The cushioning material 892 is attached to the back surface of the collision metal member 891 opposite the operation arm unit 70. The collision metal member 891 and the cushioning material 892 are arranged in this order from the tip 721 side of the arm plate 72 of the operation arm unit 70. The cushioning material 892 is formed, for example, in a convex block shape (T-shape). In this case, the convex portion 892a of the cushioning material 892 is fitted into an opening 801a formed between a pair of side plates 801 provided at both ends in the width direction of the stopper unit 80A. As a result, by fitting the convex portion 892a of the cushioning material 892 attached to the back surface of the collision metal member 891 into the opening 801a formed between the pair of side plates 801 of the stopper portion 80A, the collision metal member 891 and the cushioning material 892 can be attached to the opening 801a formed between the pair of side plates 801 of the stopper portion 80A.

[0072] In the stopper portion 80A configured as described above, when the inner sash 30 is closed at a predetermined speed or faster, the tip portion 721 of the arm plate 72 of the operating arm portion 70 moves along the first movement path K1 and collides with the collision metal member 891 of the stopper portion 80A. In this embodiment, a buffer material 892 is arranged on the X2 side in the left-right direction X of the collision metal member 891 of the stopper portion 80A. Therefore, the stopper portion 80A can absorb the impact acting on the collision metal member 891 with the buffer material 892, thereby reducing the impact at the time of collision.

[0073] According to the second embodiment, similarly to the first embodiment, the stopper portion 80A can absorb the impact acting on the collision metal member 891 by the buffer material 892, and therefore can mitigate the impact at the time of collision. Furthermore, because the stopper portion 80A can absorb the impact acting on the collision metal member 891 by the buffer material 892, the durability of the collision metal member 891 and the buffer material 892 can be improved, and furthermore, the impact noise caused by a collision with the tip portion 721 of the arm plate 72 of the operation arm portion 70 can be reduced.

[0074] Although the preferred embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments and can be modified as appropriate.

[0075] For example, in the above embodiment, the case of closing the inner shoji screen 30 has been described, but the present invention is not limited to this. For example, the arm plate 72 of the safety device 10 may be provided on the door base side of the inner shoji screen 30, and the safety device main body 60 of the safety device 10 may be provided on the end side of the upper frame 21 of the frame body 20 on the X1 side in the left-right direction X, thereby forming a safety device used when opening the inner shoji screen 30 on the X1 side in the left-right direction X of the frame body 20.

[0076] In the above embodiment, the door body is configured as an inner shoji screen 30, but this is not limited to this, and the door body may be configured as a door that does not have a frame body and glass. Also, for example, the door body may be configured as a door.

[0077] By applying the opening and closing device of the present disclosure to an electrically operated door such as an automatic door, it can be used even when the electrically operated part breaks down and the door has to be opened and closed manually.It can also be applied to a soft-close opening and closing device that closes gently when opening and closing.

[0078] In the above embodiment, the opening and closing device 1 is configured as a double sliding window, but is not limited to this, and may be configured as, for example, a single sliding window.

[0079] In the above embodiment, the safety device main body 60 (stopper portion 80) is disposed on the end portion on the X2 side in the left-right direction X of the upper frame 21, and the operating arm portion 70 is disposed on the X2 side in the left-right direction X of the inner shoji screen 30, but this is not limiting. For example, the safety device main body 60 (stopper portion 80) may be disposed on the center side in the left-right direction X of the upper frame 21, and the operating arm portion 70 may be disposed at a position corresponding to the safety device main body 60 (stopper portion 80) in the left-right direction X of the inner shoji screen 30 (for example, on the center side in the left-right direction X of the inner shoji screen 30).

[0080] In the above embodiment, one safety device body 60 (stopper portion 80) is provided, so that the inner door (door body) temporarily stops at one position in the left-right direction, but this is not limited to this. The safety device body 60 (stopper portion 80) may be provided at multiple positions in the left-right direction, so that the inner door 30 temporarily stops at multiple positions in the left-right direction.

[0081] In addition, as another form of providing the safety device main body 60 (stopper portion 80) in multiple locations, for example, the safety device main body 60 (stopper portion 80) may be attached between two pairs of sliding doors, such as a triple-panel or quadruple-panel door, to prevent fingers from getting pinched between the sliding doors.

[0082] In the above embodiment, the distal end pin 73 is configured to be rotatable around the central axis as the rotation axis, but this is not limitative, and the distal end pin 73 may be configured not to rotate.

[0083] In the above embodiment, the tip 721 of the arm plate 72 is configured to collide with the stopper portion 80, but this is not limiting. A roller may be provided at the tip of the arm plate 72, and the roller provided at the tip of the arm plate may be configured to collide with the stopper portion. In this case, the roller provided at the tip of the arm plate 72 may be configured as a pin that guides the movement of the arm plate 72. [Explanation of symbols]

[0084] 1 opening and closing device, 10 safety device, 20a opening, 30 inner shoji (door body), 80, 80A stopper part, 82 movable collision metal member (metal part), 83 buffer material, 84 guide tube (guide protrusion, guide part), 86 lower surface cover part (cover part), 721 tip part (moving part), 824 elongated hole (guide part), 891 collision metal member (metal part), 892 buffer material

Claims

1. A safety device for an opening and closing device that can open and close an opening by opening and closing a door body, a moving part that moves as the door body is opened and closed; a stopper portion with which the moving portion collides so as to temporarily stop the opening and closing operation of the door body when the door body is moved at a predetermined speed or more; The stopper portion has a metal portion against which the moving portion collides as it moves along a linear direction, and a buffer material extending along the linear direction on the metal portion on the opposite side to the moving portion, and which receives the load when the moving portion collides with the metal portion.

2. The safety device for a switching device according to claim 1 , wherein the metal part is configured to be movable toward the buffer material when the moving part collides with the metal part.

3. The cushioning material is made of a rubber material and is formed into a rectangular parallelepiped shape extending in the movement direction of the moving part. A safety device for a switchgear according to claim 1 or 2.

4. 3. The safety device for a switching device according to claim 1, wherein the stopper portion has a guide portion that guides movement of the metal portion.

5. 5. The safety device for a switching device according to claim 4, wherein the guide portion has a guide protrusion and an elongated hole formed in the metal portion and movable along the guide protrusion.

6. 6. The safety device for an opening and closing device according to claim 1, wherein the stopper portion has a lid portion that is arranged below the buffer material and holds the buffer material from below.

7. An opening and closing device comprising a frame body, a door body disposed within the frame body, and a safety device for the opening and closing device that can open and close an opening of the frame body by opening and closing movement of the door body, The safety device is fixed to the upper frame of the frame body, The safety device includes a moving part that moves in the direction in which the upper frame extends as the door body is moved to open or close, and a stopper part that the moving part collides with to temporarily stop the opening or closing operation of the door body when the door body is moved at a predetermined speed or faster. The stopper portion has a metal portion against which the moving portion collides as it moves along the extending direction of the upper frame, and a buffer material that extends along the extending direction of the upper frame on the opposite side of the metal portion from the moving portion side and that receives a load when the moving portion collides with the metal portion. Switchgear.

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