JP2020117984A - Unlocking device of overhead door - Google Patents

Abstract

To enable unlocking of a lock mechanism and releasing of a door body by a single action, without exerting an unnecessary force on a locking/unlocking device or a panel.SOLUTION: The door body in a fully-closed attitude is in a locked state in which left and right latches 5 in a first position are engaged with left and right latch hooks 6 and an upward movement is restricted. An operation part (slider 8) is provided so as to move up and down in parallel with respect to a face of a panel 1, and is in a bottom position when the left and right latches 5 are in the first position. By moving the operation part (slider 8) in the bottom position upward in parallel with the face part of the panel 1, the left and right latches 5 move from the first position to the second position via a wire 7 to unlock the locked state.SELECTED DRAWING: Figure 7

Description

The present invention relates to an unlocking device for an overhead door.

The overhead door is known as a fitting that is installed in an opening that communicates the inside and outside of a building such as a warehouse or a garage. As shown in FIG. 13, the door body of the overhead door is configured by connecting a plurality of laterally rectangular panels 1 ′ so as to be vertically rotatable with each other via a hinge 2. The guide rollers at the left and right ends in the width direction of the panel 1 ′ are opened and closed by being raised and lowered while being guided by the guide rails 4 provided on the left and right sides in the width direction of the opening. The overhead door includes a locking device that restricts upward movement of the door body in a fully closed position, and the locking device is provided at both ends of the door body in the width direction, and between the first position and the second position. Of the left and right latches that are movable by the right and left and are biased to take the first position, and the left and right latch hooks provided at predetermined height positions at both ends of the opening. When the lower end is landed and is in the fully closed state, the left and right latches are locked by the left and right latch hooks, and the upward movement of the door is restricted. As shown in FIG. 14, an unlocking operation lever L connected to the left and right latches by wires 70′ and 71′ is provided at the central portion in the width direction of the door body to open the opening. In the above, the locked state is released and the door body is raised by rotating the unlocking operation lever. A similar locking device is disclosed in Patent Document 1.

In the locking device disclosed in Patent Document 1, FIG. 13, and FIG. 14, when the door body in the locked state is opened, after the unlocking operation lever L is gripped and rotated to perform the unlocking operation, It was necessary to hold the handle H and lift the door body upward. If the unlocking operation lever L rotated to the release posture is used to perform the opening operation, the load of the door acts on the unlocking operation section including the unlocking operation lever L, and the unlocking operation section is damaged. Therefore, the handle H is required separately because of the fear. Further, since the locking device according to Patent Document 1 is provided with the operation section facing the indoor and outdoor sides of the panel, when the overhead door is installed in an opening of a refrigerated warehouse or the like, heat conduction occurs through the locking device. Condensation might occur inside.

An overhead door locking/unlocking device disclosed in Patent Document 2 holds a grip member and rotates a vertical rotation lever to a substantially horizontal direction to unlock and raise the overhead door, and to perform both lowering and locking operations. Can be performed only by operating the vertical rotation lever up and down. However, when the vertical turning lever is turned, the lever may act to apply a load to the attachment/detachment portion of the locking/unlocking device, and the attachment screw may come off, or unnecessary force may be applied to the panel surface to cause unevenness. is there.
JP-A-6-330680 Utility model registration No. 3174802

The present invention provides an unlocking device for an overhead door that enables unlocking of the locking mechanism and opening of the door body in one action without applying unnecessary force to the locking and unlocking device or the panel. The purpose is.

The technical means adopted by the present invention are
In the overhead door that opens the opening by moving the door body that connects a plurality of panels in the height direction from the fully closed posture,
Left and right latches that are provided at both widthwise ends of the door body, are movable between a first position and a second position, and are biased to take the first position;
Left and right latch hooks provided at predetermined height positions on both ends of the opening,
An operating portion provided at a central portion in the width direction of the door body and connected to the left and right latches by a connecting element,
Equipped with
The door body in the fully closed position is in a locked state in which upward movement is restricted by locking the left and right latches at the first position with the left and right latch hooks,
The operation portion is provided so as to be movable up and down in parallel with the surface portion of the panel, and is in the lower position when the left and right latches are in the first position,
By moving the operating portion in the lower position upward in parallel with the surface portion of the panel, the left and right latches are moved from the first position to the second position via the connecting element, and the locked state is obtained. Unlocked,
An unlocking device for overhead doors.

In one aspect, the unlocking device is provided with a contacted portion with which the operating portion abuts when the operating portion moves up to an upper position, and the operating portion is parallel to the surface portion of the panel. The upward moving force acts as a force in the opening direction of the door body via the contacted portion.
In the embodiment described later, when the operating portion (slider 8) is moved up to the upper position, the lower edges 8101 and 8201 of the guide openings 810 and 820 of the operating portion (the first side 81 and the second side 82 of the slider 8). ) Contacts the contacted portion (lower end 971 of the guide plate 97).

In one aspect, the connecting element is a wire extending along a surface of the panel, the wire including a first portion extending between one latch and the operating portion, the other latch and the operating portion. A second portion extending between
Interlocking with the upward movement of the operation portion, the first portion and the second portion are pulled toward the center portion in the width direction of the panel, and the left and right latches move from the first position to the second position. ..

In one aspect, the first portion and the second portion of the wire are portions of one wire, and the proximal side of the first portion and the proximal side of the second portion are the ones of the one wire. It is an intermediate portion in the length direction of the wire.

In one aspect, the operation unit is composed of a slider that can move up and down in parallel with a surface portion of the panel,
A handle is provided at the lower end of the slider, and a push-up portion is provided at the upper end of the slider,
Left and right guide pulleys are provided on the left and right of the push-up section,
The base end side of the first portion and the base end side of the second portion of the wire are fixed to the push-up portion through the lower sides of the left and right guide pulleys, respectively.
By the upward movement of the push-up portion accompanying the upward movement of the slider, the base end side of the first portion and the base end side of the second portion are pushed upward, respectively, and the first portion and the second portion are respectively Pulled while being guided by the left and right guide pulleys.

In one aspect, the operation unit is composed of a slider that can move up and down in parallel with a surface portion of the panel,
A handle is provided at the lower end of the slider, and a push-up portion is provided at the upper end of the slider,
Left and right guide pulleys are provided on the left and right of the push-up section,
The base end side of the first portion and the base end side of the second portion of the wire respectively pass under the left and right guide pulleys, and the lengthwise intermediate portion is in contact with the push-up portion. (It may or may not be fixed to the lifting portion),
Due to the upward movement of the push-up portion that accompanies the upward movement of the slider, the intermediate portion in the lengthwise direction is pushed upward, and the first portion and the second portion are pulled while being guided by the left and right guide pulleys.

In one aspect, in the pushing-up portion, a portion that comes into contact with the first portion and the second portion of the wire when pushing up is a curved surface.

According to the present invention, the overhead door can be unlocked and the door body can be opened by one action of moving the operating portion upward, and the opening can be smoothly opened by a series of operations.
Since the vector of the force that moves the operating part upwards coincides with the vector of the force that opens (raises) the door, the force that moves the operating part acts directly as the opening force of the door, No unnecessary force acts on the unlocking device.
Since the operation unit that performs the unlocking operation functions as the operation unit that opens the door, it is not necessary to provide a handle on the panel.
The operation part can be moved up without grasping the operation part.For example, even if the thick gloves are put on in the refrigerated warehouse, the locking mechanism can be unlocked and the door body can be easily opened. You can

It is the front view which looked at the overhead door in a fully closed position from the indoor side. It is a side view of the overhead door in a fully closed position. It is a cross-sectional view of the width direction edge of the bottom panel of the overhead door in the fully closed position. It is the front view which looked at the panel in which the locking/unlocking device was provided from the indoor side. It is a cross-sectional view of the width direction edge part of the panel provided with the locking/unlocking device. It is the front view which looked at the width direction edge part of the panel in which the locking/unlocking device was provided from the indoor side. It is a longitudinal cross-sectional view of a panel provided with an unlocking device. It is a figure which shows an unlocking device, (A) is a top view, (B) is a side view, (C) is a front view. In FIG. 8, the slider is in the lower position and the latch is in the first position (locked position). It is a front view showing an unlocking device, a slider is in an upper position, and a latch is in a 2nd position (unlocking posture). It is a figure which shows a slider, (A) is a top view, (B) is a side view, (C) is a front view. It is a figure which shows a base, (A) is a top view, (B) is a side view, (C) is a front view. (A) shows a guide mounting piece, (B) shows a guide plate. It is the front view which looked at the overhead door in a fully closed position (it is equipped with the conventional unlocking device) from the indoor side. It is a partially expanded view of the panel provided with the conventional unlocking device.

[A] Overall Configuration of Overhead Door FIG. 1 is a front view of the overhead door in a fully closed position as seen from the inside of the room, and FIG. 2 is a side view of the overhead door. The door body of the overhead door is configured by connecting a plurality of laterally rectangular panels 1 to each other through hinges 2 so as to be vertically rotatable with respect to each other. Roller brackets 3 ′ that rotatably support the guide rollers 3 are provided at the left and right ends of each panel 1 in the width direction, and the door body has guide rollers 3 at the left and right ends of the panel 1 in the width direction of the opening. The openings are opened and closed by being raised and lowered while being guided by the guide rails 4 provided on the left and right. The overhead door according to this embodiment is installed in, but not limited to, an opening of a refrigerated warehouse.

As shown in FIG. 2, the guide rail 4 includes a first portion 40 that extends in the height direction of the opening, and a curved second portion 41 that extends rearward from above the first portion 40 toward the inside of the room. The third portion 42 extends rearward from the second portion 41 along the ceiling CL. The first portion 40 is gently inclined from the lower side to the upper side toward the indoor side. The third portion 42 is gently inclined upward toward the indoor side.

In the fully closed state where the lower end of the door is landed on the floor surface FL, each panel 1 (excluding the uppermost panel 1) is located at the first portion 40 of the guide rail 4 so that the plurality of panels 1 Close to the vertical position and close the opening. In the fully opened state, each panel 1 moves from a substantially vertical posture to a substantially horizontal posture in which the third portion 42 is located (the lowest panel 1 is located in the second portion 41), and the door body is located in the indoor space. The opening extends in the lateral direction along the ceiling CL to open the opening.

The guide rail 4 (first portion 40) is supported in a take-out shape from the skeletons 20 on the left and right of the opening via a support frame 400 and a support plate 401 that extend vertically over substantially the entire height of the opening (FIG. 3, see FIG. 5). The support frame 400 is a long member having an L shape in a sectional view from the first side 4000 and the second side 4001, and is connected to the body 20 by a screw 21 so that the first side 4000 overlaps the body 20. There is. In the state where the first side 4000 is connected to the body 20, the second side 4001 extends vertically to the body 20 toward the inside of the room. A support plate 401 is connected to the outer surface of the second side 4001 in surface contact therewith, and the indoor side portion of the support plate 401 is an extended portion that extends toward the indoor side beyond the end portion of the second side 4001. The guide rail 4 is connected to the inner surface of the extended portion. In addition, in the present embodiment, the support frame 400 and the support plate 401 are composed of separate members, but they may be integrally formed.

As shown in FIGS. 3, 4, and 5, the panel 1 includes an indoor side surface portion 10, an outdoor side surface portion 11, and lateral side surfaces 12 on the left and right sides in the width direction. A frame 12' is provided. The vertical frame 12 ′ is a cross-sectional view from a first found side 120 that is in close contact with the indoor side surface part 10 of the panel 1, a second found side 121 that is in close contact with the outdoor side surface part 11 of the panel 1, and an expected side 122. It is formed in a substantially U shape, and the expected side 122 is the side surface 12 of the panel 1. The panel 1 is provided with a convex upper frame 13 and a concave lower frame 14, and in the fully closed state of the opening, the concave lower frame 14 of the panel 1 located on the upper side is convex to the panel 1 located on the lower side. The upper frame 13 is shaped to fit.

As shown in FIG. 3, both end portions in the width direction of the outdoor side surface portion 11 of the panel 1 (that is, the second sides 121 of the vertical frame 12′) face the frame body 20 with a gap. The skeleton body 20 is provided with a fin-shaped sealing material 22 and a hollow sealing material 23, and when the door body is in a state where the opening is fully closed, the width direction end of the outdoor side surface portion 11 of the panel 1 and the skeleton body. It is designed to close the gap formed with 20.

The overhead door according to this embodiment is a manual type. A rotary shaft 16 having a balance spring 15 is arranged above the opening, and a suspension wire 18 having one end fixed to a drum 17 pivotally supported on both ends of the rotary shaft 16 (see FIG. 2). The other end is connected to the wire fixing portions 19 (see FIG. 3) at the left and right ends of the lowest panel 1, respectively, and by winding the suspension wire 18 by the biasing force of the balance spring 15 in the winding direction, Move the door in the fully closed position upward to open the opening. Fall prevention devices 24 that prevent the panel 1 from falling in an emergency such as the suspension wire 18 being cut are provided at both end portions in the width direction of the indoor side surface portion 10 of the lowest panel 1, and the fall prevention device 24 is , Cover 24'.

[B] Overhead Door Locking Mechanism In the present embodiment, left and right latches 5 are provided on the left and right ends in the width direction of the second panel 1 from the bottom of the overhead door, and the left and right guide rails 4 are Latch hooks 6 are provided at a predetermined height so as to correspond to the heights of the left and right latches 5 when the opening is fully closed and project from the guide rails 4 toward the inside of the room. A locking mechanism is formed by the left and right latches 5 and the left and right latch hooks 5, and when the door body is in the fully closed posture, the left and right latches 5 are locked to the left and right latch hooks 6 so that the fully closed posture is achieved. The upper movement of the door body at is locked and the overhead door is locked.

As shown in FIGS. 5 and 6, the latch 5 according to the present embodiment is provided with a pair of upper and lower parts which are provided so as to stand upright with respect to the base plate 50 fixed to the widthwise end of the indoor side surface part 10 of the panel 1. A rotation arm 51, a locking portion 52 integrally formed at the tip of the pair of rotation arms 51, and extending from the tip of the rotation arm 51 to the outside (a side away from the center of the panel 1 in the width direction) in an inclined shape. Equipped with. The pair of rotating arms 51 horizontally protrudes from the indoor side surface portion 10 of the panel 1, and is rotatable left and right around a vertically extending rotating shaft 510. The first position (locking posture) protruding from the side surface 12 of the panel 1 and the second position in which the locking portion 52 (in the illustrated embodiment, almost the most) is located closer to the center side in the panel width direction than the side surface 12 of the panel 1. The position (unlocked posture) and is taken. In FIG. 5, the second position is indicated by the latch 5', the rotating arm 51', and the locking portion 52'.

The rotating arm 51 is provided with a spring 53 (which is mounted on the rotating shaft 510) as a means for urging the rotating arm 51 to rotate outward (side away from the center of the panel 1 in the width direction). I have it. When the latch 5 (the rotation arm 51 and the locking portion 52) is in the first position, the rotation arm 51 rotates outward about the rotation shaft 510 (side away from the center of the panel 1 in the width direction). However, the locking portion 52 projects from the end surface 12 in the width direction of the panel 1, and the spring 53 holds the first position.

The latch hook 6 is provided at a predetermined height of the first portion 40 of the left and right guide rails 4, and the latch hook 6 is a locked portion that protrudes from the first portion 40 of the guide rail 4 toward the indoor side. Equipped with 60. An inclined guide surface is formed on the locked portion 60 of the latch hook 6, and the rotating arm 51 is slightly rotated to the second position side just before the door body which is descending is almost closed. While moving, the locking portion 52 goes over the guide surface and descends, and when the opening is fully closed, the upper end of the locking portion 52 abuts or approaches the lower end of the locked portion 60 of the latch catch 6 from below. Then, it is configured to be locked. As shown in FIG. 5, when the latch 5 ′ (the rotation arm 51 ′ and the locking portion 52 ′) is in the second position, the rotation arm 51 ′ is located inside the rotation shaft 510 (on the panel 1). The locking state of the locking portion 52 ′ of the latch 5 and the locked portion 60 of the latch hook 6 is released by pivoting to the center (in the width direction). The specific shape and configuration of the locking mechanism including the latch 5 and the latch hook 6 are not limited to the illustrated mode.

[C] Overhead Door Unlocking Device The overhead door includes an unlocking device that unlocks the locked state of the door body locking mechanism. An operating portion of the unlocking device is provided at a central portion in the width direction of the indoor side surface portion 10 of the panel 1 having left and right latches 5 at both widthwise ends, and the left and right latches 5 and the operating portion serve as connecting elements. They are connected by wires 7. The locked state is unlocked via the wire 7 by the unlocking operation of the operation unit. In the present specification, the “widthwise central portion of the indoor side surface portion 10 of the panel 1” is not limited to a point of half of the width dimension, but substantially corresponds to the operability of the unlocking operation by the operation portion. It also includes a portion that is displaced in the left-right direction (the width direction of the panel 1) from a point at which the width dimension is ½ within a range that does not affect the above. The connecting element is not limited to the wire 7, and may be one that connects the latch 5 and the operating portion using a connecting rod or the like. The unlocking device for the overhead door according to the present embodiment is not provided on the outdoor side surface portion 11 of the panel 1, so that heat conduction does not occur inside and outside the panel 1 via the unlocking device, and the overhead door is unlocked. When installed in the opening of a refrigerated warehouse, dew condensation does not occur inside the unlocking device.

The operation unit according to the present embodiment is a slider 8 that is provided so as to be movable up and down in parallel with the indoor side surface portion 10 of the panel 1, and the left and right latches 5 of the slider 8 are in the first position (locking posture). When it is in the lower position, the slider 8 in the lower position is moved upward in parallel to the indoor side surface portion 10 of the panel 1, so that the left and right latches 5 are moved to the first position ( The locked state is unlocked by moving from the locked position) to the second position (unlocked position).

As shown in FIG. 10, the slider 8 includes an upper surface 80, a first side edge 81, a second side edge 82 that hangs from the left and right end portions of the upper surface 80, and lower ends of the first side edge 81 and the second side edge 82. From the handle 83 provided between them, the front view has a substantially rectangular shape. In the present embodiment, the handle 83 has a cylindrical shape or a cylindrical shape, but the shape (cross-sectional shape, etc.) of the handle 83 is not limited. The upper surface 80 of the slider 8 extends in the width direction of the panel 1, and at the central portion of the upper surface 80 of the slider 8 in the width direction, the base end side of the first portion 70 of the wire 7 as the slider 8 moves, A push-up portion 84 that pushes up the base end side of the second portion 71 is provided.

The push-up portion 84 includes an upper surface portion 840, an arc-shaped first curved surface 841 extending downward from one side in the left-right direction of the upper surface portion 840, and an arc shape extending downward from the other end in the left-right direction of the upper surface portion 840. Second curved surface 842 and a connecting piece 843 that horizontally extends forward from the upper surface portion 840 (on the side away from the indoor side surface portion 10 of the panel 1, that is, on the indoor side). The push-up portion 84 is fixed by a screw 8430 by stacking the connecting piece 843 on the central portion in the width direction of the upper surface 80 of the slider 8 from above. In the present embodiment, the push-up portion 84 is formed separately from the upper surface 80 and is integrated with the screw 8430, but the push-up portion 84 and the upper surface 80 may be integrally formed from one member.

A tongue-shaped connecting piece 800 is horizontally projected toward the indoor side surface portion 10 of the panel 1 at a widthwise central portion of the upper surface 80 of the slider 8, and the connecting piece 800 is provided on the upper surface portion 840 of the pushing-up portion 84. It is in contact with the lower surface. A pressing plate 844 is fixed to the upper surface portion 840 of the push-up portion 84 by a screw 8440, and the screw 8440 is screwed to a connecting piece 800 that abuts the upper surface portion 840 from below.

The wire 7 according to the present embodiment extends over substantially the entire width of the opening, and is fixed to the upper surface portion 840 of the push-up portion 84 at the central portion in the length direction. In the present embodiment, the pressing plate 844 is fixed to the upper surface portion 840 and the connecting piece 800 with the screw 8440 in a state where the central portion in the length direction of the wire 7 is sandwiched between the pressing plate 844 and the upper surface 840. 7 is brought into close contact with and fixed to the upper surface portion 840 of the push-up portion 84. The wire 7 extending in the width direction of the panel 1 is stretched horizontally by being pulled by the spring 53 of the latch 5 whose left and right ends in the length direction are connected.

The wire 7 according to the present embodiment includes one first portion 70 and the other second portion 71 sandwiching a central fixed portion (a portion fixed to the upper surface portion 840) in the length direction. That is, the central fixed portion of the wire 7 in the longitudinal direction is the base end side of the first portion 70 of the wire 7 and the base end side of the second portion 71, and the base end of the first portion 70 of the wire 7 is Side, the base end side of the second portion 71 is fixed to the upper surface portion 840 of the push-up portion 84. In the present embodiment, the first portion 70 and the second portion 71 are formed from the single wire 7, but the first portion 70 and the second portion 71 may be formed from independent wires.

One latch 5 is connected to the tip of the first portion 70 of the wire 7, and the other latch 5 is connected to the tip of the second portion 71 of the wire 7. More specifically, the distal end of the first portion 70 of the wire 7 is coupled to the distal end side of the upper rotation arm 51 of the one latch 5 via the coupling hook 54, and the second portion 71 of the wire 7 is connected. The tip end of is connected to the tip side of the upper rotation arm 51 of the other latch 5 via a connection hook 54. By pushing up the proximal end side of the first portion 70 of the wire 7 and the proximal end side of the second portion 71 of the wire 7 by the push-up portion 84, the distal end side of the first portion 70 of the wire 7 and the distal end side of the second portion 71 are pushed. The panel 5 is pulled to the center in the width direction, and the latch 5 at the first position is moved to the second position.

In the present embodiment, the central portion in the length direction of one wire 7 is fixed to the upper surface portion 840 of the push-up portion 84, but the central portion in the length direction of one wire 7 is not fixed. Alternatively, it may be in contact with the upper surface portion 840 of the push-up portion 84 so as not to come off. For example, the central portion in the length direction of one wire 7 is inserted into an insertion hole provided in the upper surface portion 840 of the push-up portion 84, and the push-up portion 84 is moved to the length of one wire 7 by the upward movement of the slider 8. You may make it push up the center part of the depth direction. The lengths of the first portion 70 and the second portion 71 are substantially the same, and the biasing forces of the springs 53 of the left and right latches 5 are substantially the same, so that the central portion of one wire 7 in the length direction is Even if it is not fixed, the upward movement of the push-up portion 84 pulls the first portion 70 and the second portion 71 evenly toward the center side in the width direction of the panel 1.

The slider 8 according to the present embodiment is supported so as to be vertically movable in the vertical direction with respect to a base 9 fixed to a central portion in the width direction of the indoor side surface portion 10 of the panel 1, and has a lower position and an upper position. It is like this. When the slider 8 is in the lower position, the latch 5 is in the first position (locked position), and when the slider 8 is in the upper position, the latch 5 is in the second position (unlocked position). 8 and 9 show the state in which the slider 8 is incorporated in the base 9. The slider 8 is in the lower position in FIG. 8, and the slider 8 is in the upper position in FIG.

As shown in FIG. 11, the base 9 has a vertical surface 90 fixed to the indoor side surface portion 10 of the panel 1 and a vertical surface 90 (the indoor side surface portion 10 of the panel 1) from both left and right ends in the width direction of the vertical surface 90. And left and right first side surfaces 91 and second side surfaces 92 that extend vertically, and in the upper portion of the vertical surface 90, the left and right first guide pulleys 93 and second guide pulleys 93 are spaced apart in the width direction of the panel 1. 94 is provided. As shown in FIG. 7, in the indoor side surface portion 10 of the panel 1, a reinforcing plate 100 is provided inside the surface material at a portion where the vertical surface 90 of the base 9 is fixed. The first guide pulley 93 is rotatably supported by a support bracket 930 fixed to the vertical surface 90 at a position taken out from the vertical surface 90, and the second guide pulley 94 is supported by a support bracket 940 fixed to the vertical surface 90. Is rotatably supported at a position brought out from the vertical surface 90.

The first guide pulley 93 guides the first portion 70 of the wire 7, and the second guide pulley 94 guides the second portion 71 of the wire 7. Insertion holes 910 and 920 for the wire 7 are formed on the first side surface 91 and the second side surface 92 of the base 9 in correspondence with the height positions of the lower ends of the first guide pulley 93 and the second guide pulley 94. The first portion 70 of the wire 7 extends horizontally through the insertion hole 910 and the lower side of the first guide pulley 93, and the second portion 71 of the wire 7 extends below the insertion hole 920 and the second guide pulley 94. It extends horizontally through the side.

Bending pieces 912 are formed at the tips of the first side surface 91 and the second side surface 92 of the base 9. Bending pieces 913 are formed at the upper ends of the first side surface 91 and the second side surface 92. A bottom surface 95 that extends horizontally is formed at the lower end of the vertical surface 90 of the base 9, and the tip of the bottom surface 95 is located below the guide pulleys 93 and 94. The rising piece 950 is formed at the position. The first side 81 and the second side 82 of the slider 8 are vertically arranged in the space between the bent piece 912 at the tip of the first side surface 91 and the second side surface 92 of the base 9 and the rising piece 950 at the tip of the bottom surface 95. Is movably accepted. The front surface of the base 9 is open, and a cover 96 (see FIG. 4) is attached in a state where the slider 8 is received.

A guide plate 97 is fixed to the inner surfaces of the first side surface 91 and the second side surface 92 of the base 9 using a guide mounting piece 96. The guide mounting piece 96 has a U-shape from a vertical portion 960, a bent portion 961 at the upper end of the vertical portion 960, and a bent portion 962 at the lower end of the vertical portion 960. The upper and lower corners of the vertical portion 960 of the guide mounting piece 96 are curved surfaces. A screw hole 963 of the screw 98 for mounting the guide plate 97 is formed in the vertical portion 960.

The guide plate 97 has a vertical rectangular shape from the upper end 970, the lower end 971, and the side edges 972 and 973, and an insertion hole 974 for the screw 98 is formed in the surface portion. An insertion hole 911 for the screw 98 (an insertion hole for the second side surface 92 is not shown) is formed in the first side surface 91 and the second side surface 92 of the base 9. The guide mounting piece 96 and the guide plate 97 are fixed to the inner surfaces of the first side surface 91 and the second side surface 92 of the base 9 at predetermined height positions by using screws 98.

As shown in FIG. 10, vertical rectangular guide openings 810 and 820 for receiving the guide plate 97 are formed on the first side 81 and the second side 82 of the slider 8. The height dimension of the guide openings 810 and 820 is larger than the height dimension of the guide plate 97, and the width dimension thereof is slightly larger than the width dimension of the guide plate 97 (the first side 81 relative to the guide plate 97). , And the second side edge 82 is in close contact with the slide edge 82). The guide plate 97 fixed to the base 9 is relatively slidably received in the guide openings 810 and 820 of the first side 81 and the second side 82 of the slider 8, and the height position is fixed. The first side 81 and the second side 82 of the slider 8 are adapted to slide vertically with respect to the guide plate 97. Note that the slide mechanism of the slider 8 is not limited to the one using the guide openings 810, 820 and the guide plate 97, and other configurations can be adopted.

When the slider 8 is at the lower position, the upper end 970 of the guide plate 97 is in contact with the upper end edges 8100 and 8200 of the guide openings 810 and 820 of the first side 81 and the second side 82. When the slider 8 is at the upper position, the lower ends 971 of the guide plates 97 are in contact with the lower edges 8101 and 8201 of the guide openings 810 and 820 of the first side 81 and the second side 82, respectively. When an upward force is applied to the slider 8 in the upper position, the lower edges 8101 and 8201 of the guide openings 810 and 820 of the first side 81 and the second side 82 come into contact with the lower ends 971 of the guide plates 97 to guide the guides. It acts as a force that pushes up the plate 97, and acts as a force that raises the base 9 to which the guide plate 97 is fixed and the panel 1 to which the base 9 is fixed. In one aspect, the latch 5 in the first position (locked posture) is in the second position (unlocked posture) before the slider 8 moves up to the upper position. Further, before the slider 8 moves up to the upper position, the lifting of the panel 1 may be started by the biasing force of the balance spring 15 in the winding direction via the suspension wire 18.

The inner surfaces of the first side edge 81 and the second side edge 82 of the slider 8 are close to the vertical surface 960 of the guide mounting piece 96 fixed to the base 9 with a slight gap. Since the upper and lower corners of the guide mounting piece 97 (particularly the lower corners) are curved, the first side 81 and the second side 82 contact the corners when the slider 8 moves up and down. Without making it possible, it enables smooth vertical sliding.

When the slider 8 is at the lower position, the upper edges 8100 and 8200 (see FIG. 10) of the guide openings 810 and 820 of the first side 81 and the second side 82 are located at the upper end 970 of the guide plate 97 (see FIG. 12B). ) See). As shown in FIG. 8, when the slider 8 is at the lower position, the lower end of the first guide pulley 93, the lower end of the second guide pulley 94 and the upper surface portion 840 of the push-up portion 84 are at substantially the same height position, The first wire 70 and the second wire 71 extend substantially horizontally through the lower side of the first guide pulley 93 and the lower side of the second guide pulley 94. The right end of the left first guide pulley 93 is located slightly left of the left end of the left first curved surface 841 of the upper surface portion 840 of the push-up portion 84, and the left side of the right second guide pulley 94. The end is located slightly to the right of the right end of the second curved surface 842 on the right side of the upper surface portion 840 of the push-up portion 84.

When the left and right latches 5 are in the first position, the slider 8 is in the lower position, and the first portion 70 and the second portion 71 of the wire 7 extend horizontally in the width direction of the panel 1 (FIG. 4). When the slider 8 in the lower position is pushed upward from this state, the slider 8 is guided by the guide plate 97 through the guide openings 810 and 820 formed in the first side 81 and the second side 82. Move up. With the upward movement of the slider 8, the push-up portion 84 of the slider 8 pushes up the central portion in the length direction of the wire 7 (the proximal end side of the first portion 70 and the proximal end side of the second portion 71). The first portion 70 and the second portion 71 are pulled toward the center side in the width direction of the panel 1 (the direction of the arrow in FIG. 9 ). When the base end side of the first portion 70 and the base end side of the second portion 71 of the wire 7 are pulled toward the center side in the width direction of the panel 1, the left and right latches connected to the tips of the first portion 70 and the second portion 71. 5 rotates from the first position (locking posture) to the second position (unlocking posture), and the latch 5 in the locked state is unlocked.

When the slider 8 located at the lower position is pushed upward, the lower edges 8101 and 8201 (see FIG. 10) of the guide openings 810 and 820 of the first side 81 and the second side 82 of the slider 8 move to the guide plate 97. Ascend to the upper position where it abuts the lower end 971 (see FIG. 12B). The force that pushes up the slider 8 in the upper position acts as a force in the opening direction of the door body. Therefore, when pushing up the slider 8 in the lower position, the locking mechanism is unlocked and the slider 8 moves to the upper position. After moving to, the door body is lifted by the force that moves the slider 8 upward, and the opening is opened. When the slider 8 is released after raising the door body, the slider 8 at the upper position is moved to the lower position by the pulling force of the wire 7 by the biasing force of the springs 53 of the left and right latches 5 and its own weight. , The left and right latches 5 return from the second position to the first position.

As shown in FIG. 9, when the slider 8 is at the upper position, the lower end of the first guide pulley 93, the lower end of the second guide pulley 94, and the lower ends of the first curved surface 841 and the second curved surface 842 of the push-up portion 84 are positioned. The upper surface portion 840 of the pushing-up portion 84 is located at substantially the same height position, and is located slightly above the upper ends of the first guide pulley 93 and the second guide pulley 94, and the upper portion 840 of the wire 7 is The base end side extends from the lower end of the first guide pulley 93 along the first curved surface 841 of the upper surface portion 840 of the push-up portion 84, and the base end side of the second portion 71 of the wire 7 is the second guide pulley. It extends from the lower end of 94 along the second curved surface 842 of the upper surface portion 840 of the push-up portion 84. That is, with the upward movement of the slider 8, the first curved surface 841 of the push-up portion 84 of the slider 8 abuts against the proximal end side of the first portion 70 and pushes it up, and the second curved surface 842 of the push-up portion 84 becomes the second portion. Since it is configured to abut against the base end side of 71 and push up, the damage of the wire 7 is prevented as much as possible and the durability of the wire 7 is improved when the unlocking of the locking mechanism is repeatedly executed. .. The positional relationship between the respective elements when the slider 8 is in the lower position and the upper position (for example, the positional relationship between the first guide pulley 93, the second guide pulley 94 and the push-up portion 84) is shown in the figure. However, the present invention is not limited to this mode.

In this embodiment, the overhead door can be unlocked and the door body can be opened by one action of moving the slider 8 upward, and the opening can be smoothly opened by a series of operations. Since the slider 8 moves upward in parallel with the indoor side surface portion 10 of the panel, the vector of the force that moves the slider 8 upward coincides with the vector of the force that opens (raises) the door body. The force for moving upward acts as the opening force of the door body as it is, and unnecessary force does not act on the panel 1 and the unlocking device. Further, since the slider 8 that performs the unlocking operation functions as a handle for the door opening operation, it is not necessary to provide a handle on the panel 1.

When the slider 8 is moved up, it is sufficient to bring the handle 83 from below to move it up, so it is not always necessary to grasp the handle 83. For example, wear a thick glove used for work in a refrigerated warehouse. Even in this state, the slider 8 can be easily moved upward to unlock the locking mechanism, and the door can be lifted and the opening can be opened by a series of operations as it is.

1 Panel 10 Indoor Side Surface 4 Guide Rail 5 Latch 6 Latch Engage 7 Wire 70 First Part 71 Second Part 8 Slider 81 First Side 810 Guide Opening 82 Second Side 820 Guide Opening 84 Pushing Up 841 First Curved Surface 842 Second curved surface 9 Base 93 Guide pulley 94 Guide pulley 97 Guide plate

Claims (6)

In the overhead door that opens the opening by moving the door body that connects a plurality of panels in the height direction from the fully closed posture,
Left and right latches that are provided at both widthwise ends of the door body, are movable between a first position and a second position, and are biased to take the first position;
Left and right latch hooks provided at predetermined height positions on both ends of the opening,
An operating portion provided at a central portion in the width direction of the door body and connected to the left and right latches by a connecting element,
Equipped with
The door body in the fully closed position is in a locked state in which upward movement is restricted by locking the left and right latches at the first position with the left and right latch hooks,
The operation portion is provided so as to be movable up and down in parallel with the surface portion of the panel, and is in the lower position when the left and right latches are in the first position,
By moving the operating portion in the lower position upward in parallel with the surface portion of the panel, the left and right latches are moved from the first position to the second position via the connecting element, and the locked state is obtained. Unlocked,
Overhead door unlocking device. The connecting element is a wire extending along a surface of the panel, the wire including a first portion extending between one latch and the operating portion and a first portion extending between the other latch and the operating portion. With two parts,
Interlocking with the upward movement of the operation portion, the first portion and the second portion are pulled toward the center portion in the width direction of the panel, and the left and right latches move from the first position to the second position. ,
The unlocking device according to claim 1. The first portion and the second portion of the wire are portions of one wire, and the base end side of the first portion and the base end side of the second portion are the longitudinal direction of the one wire. It is an intermediate part,
The unlocking device according to claim 2. The operation part is composed of a slider that can move up and down in parallel with the surface part of the panel,
A handle is provided at the lower end of the slider, and a push-up portion is provided at the upper end of the slider,
Left and right guide pulleys are provided on the left and right of the push-up section,
The base end side of the first portion and the base end side of the second portion of the wire are fixed to the push-up portion through the lower sides of the left and right guide pulleys, respectively.
By the upward movement of the push-up portion accompanying the upward movement of the slider, the base end side of the first portion and the base end side of the second portion are pushed upward, respectively, and the first portion and the second portion are respectively Pulled while being guided by the left and right guide pulleys,
The unlocking device according to claim 2. The operation part is composed of a slider that can move up and down in parallel with the surface part of the panel,
A handle is provided at the lower end of the slider, and a push-up portion is provided at the upper end of the slider,
Left and right guide pulleys are provided on the left and right of the push-up section,
The base end side of the first portion and the base end side of the second portion of the wire respectively pass under the left and right guide pulleys, and the lengthwise intermediate portion is in contact with the push-up portion. ,
By the upward movement of the pushing-up portion that accompanies the upward movement of the slider, the longitudinal intermediate portion is pushed upward, and the first portion and the second portion are pulled while being guided by the left and right guide pulleys, respectively.
The unlocking device according to claim 3. In the pushing-up portion, a portion that comes into contact with the first portion and the second portion of the wire when pushing up is a curved surface.
The unlocking device according to claim 4.

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