JP2020016282A - Suspension and support structures for heavy objects - Google Patents

Abstract

To provide a heavy load suspension structure in which a connection state of a first connection member and a second connection member is maintained by a string-shaped member in the case that a fixing pin is broken, and reduction of a connection strength in the suspension structure is confirmed from the outside, and a support structure.SOLUTION: A suspension structure 1 comprises a first connection member 11 which is fixed at a lower side of a support member C, and a second connection structure 12 which is fixed at an upper side of a signage S. In a distal end of the second connection member 12, an insertion hole 12h in which a distal end of the first connection member 11 is inserted while matching shaft centers with each other is formed. In the state where the distal end of the first connection member 11 is inserted into the insertion hole 12h, a fixing pin 14 is inserted to both a first through-hole 11a and a second through-hole 12a. A hole 14d penetrating the fixing pin 14 in an axial direction is opened in the fixing pin 14, and a string-shaped member 21 is inserted through the hole 14d.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a structure for suspending and supporting a heavy object, and more particularly to a technique for supporting a heavy object such as a display device by a structure.

  2. Description of the Related Art Conventionally, a suspension structure for hanging heavy objects such as a display device, a lighting device, and an acoustic device from a ceiling or a beam has been known (for example, see Patent Literature 1).

JP 2009-93029 A

  According to the suspension structure described in the above-mentioned patent document, the video display device is mounted on the ceiling by connecting the fixing member fixed to the ceiling and the connecting rod member fixed to the video display device which is a heavy object. I support it. Specifically, the video display device is configured to be suspended from the ceiling by inserting a connecting rod member into a cylindrical fixing member and inserting a bolt into a through hole penetrated by the fixing member and the connecting rod member.

  According to the technology described in the above-mentioned patent document, when an abnormality such as a crack or a break occurs in the bolt connecting the fixing member and the connecting rod member, it is externally confirmed that the connection strength is reduced. Is difficult. In particular, when it is difficult to perform frequent inspections because it is used in a place where many people gather, a hanging structure that can easily confirm safety from outside has been required.

  The present invention has been made in view of the above circumstances, and the problem to be solved by the present invention is that when an abnormality occurs in a connecting part, the connecting state of the connecting part is maintained, and the connecting strength is reduced. An object of the present invention is to provide a suspension structure and a support structure for a heavy object, which can easily confirm the fact from the outside.

  The present invention, in order to solve the above-mentioned problems, provides a suspension structure for heavy objects configured as follows.

(1)
A first connection member supported on the lower side of the support member, and a second connection member supporting the heavy object from above, including the first connection member and the second connection member, Either one is made to be able to insert the other, a first through-hole penetrating the first connecting member is opened in the first connecting member, and the second connecting member is provided with the second through-hole. A second through-hole passing through the connecting member is opened, and a fixing pin is inserted into both the first through-hole and the second through-hole in a state where the other is inserted into the one. Thereby, the first connection member and the second connection member are joined, the heavy object is suspended below the support member, and the fixing pin passes through the fixing pin in the axial direction. A suspension structure for heavy objects, wherein a hole is opened and a string-like member is inserted through the hole.

(2)
The first connecting member has a proximal end fixed to the lower side of the support member with the distal end directed downward, and the second connecting member has a proximal end with the distal end directed upward. The part is fixed on the upper side of the heavy object, and one of the first connection member and the second connection member has one end, the other end having the same axis. An insertion hole that can be inserted in a state is formed, and the first through hole that penetrates the front end of the first connection member in a direction perpendicular to the axis is opened at the front end of the first connection member. The second through-hole, which penetrates the tip of the second connection member in a direction orthogonal to the axis, is opened at the tip of the second connection member, and the insertion hole at the one tip is provided. The fixing pin is inserted into both the first through hole and the second through hole while the other end is inserted into the By but is inserted, the a first connection member and the second coupling member is coupled, suspended structure of heavy described in (1).

(3)
The heavy-weight suspension structure according to (2), wherein a retaining member larger than the hole is formed at both ends of the string-shaped member.

(4)
The heavy-weight suspension structure according to (3), wherein a predetermined gap is provided between the stopper and the axial end of the fixing pin.

(5)
The insertion hole is formed at a distal end of the first connecting member, and the first connecting member is inserted into the inserting hole at the distal end of the first connecting member, and the first connecting member is inserted into the first connecting member. The suspension structure for a heavy object according to any one of (2) to (4), wherein the fixing pin is inserted into both the through hole and the second through hole.

(6)
A mark is formed on an outer peripheral surface of a portion covered by the one foremost portion when the first connection member and the second connection member are connected to each other at the other end portion. The suspension structure for heavy objects according to any one of 2) to 5).

  Further, in order to solve the above problems, the present invention provides a support structure for a heavy object configured as follows.

(7)
A first connection member supported by a support member and a second connection member supporting a heavy object, and one of the first connection member and the second connection member is the other. Can be inserted, the first connecting member has a first through-hole passing through the first connecting member, and the second connecting member has the second connecting member passing therethrough. The second through hole is opened, and the fixing pin is inserted into both the first through hole and the second through hole in a state where the other is inserted into the one, so that the first through hole is formed. The connection member and the second connection member are joined together, the weight is supported by the support member, and the fixing pin has a hole that passes through the fixing pin in the axial direction. A support structure for a heavy object, through which the string-like member is inserted.

  The above-described suspension structure for heavy objects according to the present invention has the following effects.

  According to the configuration of (1), when the fixing pin is broken, the connection state between the first connection member and the second connection member can be maintained by the string-shaped member, and the connection strength in the suspension structure. Can be confirmed from outside.

  According to the configuration of (2), when the fixing pin is broken, the connection state between the distal end of the first connecting member and the distal end of the second connecting member can be maintained by the string-shaped member, It can be confirmed from the outside that the connection strength has been reduced in the suspension structure.

  According to the configuration of (3), it is possible to prevent the string-shaped member from being detached from the fixing pin.

  According to the configuration of (4), the safety state of the suspension structure can be confirmed only by displacing the string-like member in the axial direction with respect to the fixing pin.

  According to the configuration of (5), it is possible to prevent dust and the like from entering the second connecting member.

  According to the configuration of (6), when the fixing pin is broken, a decrease in the connection strength in the suspension structure can be easily visually recognized from the outside.

  Further, the structure for supporting a heavy object according to the present invention has the following effects.

  According to the configuration of (7), when the fixing pin is broken, the connection state between the first connection member and the second connection member can be maintained by the string-shaped member, and the connection strength is reduced in the support structure. The decrease can be confirmed from outside.

FIG. 3 is a perspective view showing a use state of the heavy-weight suspension structure according to the first embodiment. The front view showing the use condition of the suspension structure of the heavy load concerning a first embodiment. The enlarged perspective view of the connection part of a 1st connection member and a 2nd connection member. FIG. 4 is a front sectional view of a connection portion between a first connection member and a second connection member. FIG. 5 is a sectional view taken along line AA in FIG. 4. FIG. 4 is an enlarged perspective view of a connection portion between a first connection member and a second connection member when a fixing pin is broken. FIG. 4 is a front sectional view of a connection portion between a first connection member and a second connection member when a fixing pin is broken. The front view showing the use condition of the suspension structure of the heavy load concerning a second embodiment. (A) and (b) are the front view and side view which show the suspension structure of the heavy object which concerns on 2nd embodiment. The front view showing the use condition of the support structure of the heavy load concerning a third embodiment. (A) And (b) is a side view which shows the support structure of the heavy load which concerns on 3rd Embodiment. (A) And (b) is a side view which shows the support structure of the heavy load which concerns on 4th Embodiment.

  Hereinafter, a suspended structure (hereinafter, simply referred to as a “suspended structure”) 1 for a heavy object according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 7. As shown in FIGS. 1 and 2, a suspension structure 1 according to the present embodiment suspends a heavy signage S on a support member C. The arrow shown in FIGS. 1 and 2 indicates the direction of the suspension structure 1 and the signage S.

  The support member C is a member attached to a ceiling (not shown), and supports the suspension structure 1 and the signage S. In the present embodiment, two suspension structures 1 are used: a left suspension structure 1L that supports the left side of the signage S and a right suspension structure 1R that supports the right side of the signage S. Since the left-side suspension structure 1L and the right-side suspension structure 1R have the same configuration, only one of the suspension structures 1 is illustrated and described in FIG. The number of suspension structures 1 used when suspending a heavy object is not limited to two, which is the number in the present embodiment, but may be configured to suspend one or three or more heavy objects. Is also possible.

  The signage S is a display device that displays images and characters on the display panel P, and is one form of a heavy object suspended by the suspension structure 1 according to the present invention. The signage S includes a rectangular parallelepiped housing B, a display panel P accommodated on each of the front side and the rear side of the housing B, and four fans F arranged on the upper surface of the housing B. The display surface of the display panel P is visible from outside through transparent glass plates disposed on the front and rear surfaces of the housing B. A box-shaped cover member R is provided above the signage S, and covers the upper surface of the signage S. In addition, as a heavy object that can be suspended by the suspension structure 1, various objects other than the signage S, such as a display device, a lighting device, an audio device, a decoration device, a temporary device, and a shelf can be used. it can.

  As shown in FIG. 3, the suspension structure 1 is configured by connecting a first connection member 11 and a second connection member 12 made of stainless steel. The first connecting member 11 is formed in a cylindrical shape, and the base end is fixed to the lower side of the support member C with the front end directed downward. The second connecting member 12 is formed in a cylindrical shape having an inner diameter slightly larger than the outer diameter of the first connecting member 11, and the base end is located above the housing B of the signage S with the front end thereof facing upward. Fixed. A reinforcing rib 13 is fixed to the rear of the second connecting member 12 in order to increase the bonding strength with the housing B.

  In this embodiment, as shown in FIGS. 1 and 2, the second connecting members 12 of the left suspension structure 1L and the right suspension structure 1R are accommodated inside the cover member R. For this reason, in the normal use state of the signage S, the connecting portion between the first connecting member 11 and the second connecting member 12 in the suspension structure 1 is covered by the cover member R.

  In this embodiment, as shown in FIGS. 3 to 5, the distal end of the first connecting member 11 can be inserted into the distal end of the second connecting member 12 in a state where the axes thereof are aligned with each other. A hole 12h is formed. In the present embodiment, the first and second connecting members 11 and 12 are formed in a cylindrical shape, but the shape of each of the connecting members 11 and 12 can be changed to another shape. For example, the connecting members 11 and 12 may be formed in a rectangular cylindrical shape, or the connecting members 11 and 12 may be formed in a solid cylindrical shape to form the insertion hole 12h only at the tip end of the second connecting member 12.

  A first through-hole 11 a penetrating the distal end of the first connecting member 11 is opened at a distal end of the first connecting member 11 in a direction perpendicular to the axis (in the left-right direction in the present embodiment). I have. In addition, a second through hole 12a that penetrates the distal end of the second connecting member 12 in the direction perpendicular to the axis (the left-right direction in the present embodiment) is opened at the distal end of the second connecting member 12. Have been.

  Then, as shown in FIGS. 3 to 5, in a state where the distal end of the first connecting member 11 is inserted into the insertion hole 12 h at the distal end of the second connecting member 12, The fixing pin 14 is inserted into both the through hole 12a. Specifically, as shown in FIG. 4, the fixing pin 14 is a metal member formed by a large-diameter head 14a and a rod-shaped insertion portion 14b, and the insertion portion 14b is connected to the first through-hole 11a and the second through-hole 11a. Through hole 12a. More specifically, the insertion portion 14b includes first through holes 11a and 11a opened to the left and right of the first connection member 11, and second through holes 12a and 11a to the left and right of the second connection member 12. 12a.

  As shown in FIGS. 3 and 4, the distal end portion of the insertion portion 14b extends from the second through hole 12a on the side opposite to the head portion 14a. A groove 14c is formed in the circumferential direction on the outer peripheral surface of the distal end portion of the insertion portion 14b. By attaching the retaining E-ring 15 to the groove portion 14c, the fixing pin 14 is assembled to the first connecting member 11 and the second connecting member 12. Note that a washer 16 is interposed between the outer peripheral surface of the second connecting member 12 and the head 14a and the E-ring 15. Thus, the signage S is hung below the support member C by connecting the first connection member 11 and the second connection member 12 by the fixing pin 14.

  As shown in FIGS. 4 and 5, the fixing pin 14 has a hole 14 d that penetrates the fixing pin 14 in the axial direction. Then, the string-like member 21 is inserted into the hole 14d of the fixing pin 14. As a material of the string-like member 21, a reinforcing fiber having high toughness such as carbon fiber reinforced plastic is used. As the string-like member 21, other reinforcing fibers such as glass fiber reinforced plastics and resin fiber reinforced plastics, and other materials having high toughness can be used.

  As shown in FIGS. 3 and 4, both end portions of the string-shaped member 21 are folded back into two, and the folded-back portion is sandwiched by clips 22. Since the outside diameter of the portion where the cord-like member 21 is folded is larger than the inside diameter of the hole 14d of the fixing pin 14, the folded-back portion and the clip 22 function as a stopper for the cord-like member 21. That is, the folded portion of the cord-like member 21 is sandwiched between the clips 22, thereby preventing the cord-like member 21 from coming off from the fixing pin 14 and coming off. The retaining structure may be different from the structure using the clip 22 as described above. The retaining structure is formed simply by forming a knot at the end of the string-shaped member 21 or assembling another component. It is also possible.

  6 and 7 show a state in which the fixing pin 14 is broken by the weight of the signage S. As shown in FIG. 7, even when the fixing pin 14 is broken by receiving a shearing force between the first connecting member 11 and the second connecting member 12, the string-like member 21 supports the second connecting member 12. can do. That is, even when the connection strength between the first connection member 11 and the second connection member 12 by the fixing pin 14 is reduced, the connection between the first connection member 11 and the second connection member 12 by the string-shaped member 21. Since the state can be maintained, the signage S can be prevented from falling.

  Further, when the fixing pin 14 is broken, the second connecting member 12 is lowered from the position before the breaking with respect to the first connecting member 11 as shown by an arrow D in FIG. For this reason, the user of the signage S can externally confirm that the connection strength has been reduced in the suspension structure 1.

  In the suspension structure 1 according to the present embodiment, as shown in FIGS. 6 and 7, when the first connection member 11 and the second connection member 12 at the distal end of the first connection member 11 are connected to each other. A mark 11s is formed on the outer peripheral surface of a portion covered by the foremost portion of the second connecting member 12. Thus, in a normal use state, the mark 11s (see FIGS. 3 to 5) covered with the foremost portion of the second connecting member 12 (the top end of the second connecting member 12 in the present embodiment). However, when the fixing pin 14 is broken and the second connecting member 12 is displaced downward, it becomes visible as shown in FIGS. As described above, the suspension structure 1 according to the present embodiment is configured so that the decrease in the connection strength due to the breakage of the fixing pin 14 or the like can be easily visually recognized from the outside.

  In this embodiment, as shown in FIG. 4, a predetermined gap d is provided between the folded portion of the string-shaped member 21 which is a retaining member and the axial end of the fixing pin 14. In a normal use state, no load is applied to the string-shaped member 21, and therefore, when the signage S user applies a force to the fixing pin 14 in the axial direction, the signage S can be easily displaced. That is, since the user can confirm that no load is applied to the string-like member 21 only by displacing the string-like member 21, the safety state of the suspension structure 1 can be easily confirmed. is there.

  6 and 7, the state where the fixing pin 14 is completely broken has been illustrated and described. However, even when an abnormality such as a crack occurs before the fixing pin 14 breaks, the second connecting member When a load from 12 is applied, it is difficult to easily displace the string-shaped member 21. For this reason, in the suspension structure 1, even if the user applies a force to the string member 21 in the axial direction even before the fixing pin 14 breaks, the string member 21 You can recognize that an unnatural load is applied. That is, in the suspension structure 1, even before the fixing pin 14 is completely broken as shown in FIG. 7, the user recognizes the abnormality by applying a force to the string-shaped member 21 in the axial direction. You can do it.

  In the present embodiment, the first connecting member 11 is fixed to the first through-hole 11a and the second through-hole 12a in a state where the distal end of the first connecting member 11 is inserted into the insertion hole 12h of the second connecting member 12. Although the first connecting member 11 and the second connecting member 12 are connected to each other by inserting the pin 14, the connection may be reversed.

  That is, an insertion hole whose inner diameter is slightly larger than the outer diameter of the second connecting member 12 is formed in the first connecting member 11. Then, with the distal end of the second connecting member 12 inserted into the insertion hole, the fixing pin 14 is inserted through the first through hole 11a and the second through hole 12a, and the first connecting member 11 It is also possible to adopt a configuration in which the second connection member 12 and the second connection member 12 are connected. With such a configuration, the upper end of the second connecting member 12 that opens upward can be inserted into the inside of the first connecting member 11. Can be prevented from entering.

  Next, a suspension structure 101 according to a second embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 8, a suspension structure 101 according to the present embodiment suspends a heavy door body Dp from an upper member Gt as a support member.

  The door body Dp is a metal plate material, and is provided so as to be vertically slidable along guide rails GG provided on both sides of the door body Dp. Both ends of the upper member Gt are fixed to the upper ends of the guide rails GG. The door body Dp is provided with four guide rollers Dr. When the door body Dp slides along the guide rails G, the guide rollers Dr, Dr... Rotate along the guide rails G.

  The door body Dp is suspended below the upper member Gt via the suspension structure 101 and the rope 113. As shown in FIG. 9A, the suspension structure 101 is configured by connecting a movable pulley 111 as a first connecting member and a fixed member 112 as a second connecting member. A rope 113 is wound around the movable pulley 111. The fixing member 112 is formed in a U-shape in cross section as shown in FIG. 9B, and is fixed to a reinforcing member Ds provided on the door body Dp.

  The rope 113 is wound around fixed pulleys P1 to P6, and the suspension structure 101 can be moved up and down by winding up the rope 113. Specifically, as shown in FIG. 8, one end of the rope 113 is connected to a pulley P1 connected to a motor M, and the rope 113 extending from the pulley P1 is a movable pulley via fixed pulleys P2 and P3. It is wound around 111. Further, the rope 113 is disposed via fixed pulleys P4 and P5, and the other end of the rope 113 is connected to the fixed pulley P6. The handle H is connected to the fixed pulley P6.

  In the above configuration, when the motor M winds the rope 113 in the direction of the arrow R1, the suspension structure 101 is pulled up, and the door body Dp slides upward as shown by the arrow U. Conversely, when the motor M advances the rope 113 in the direction of the arrow R2, the suspension structure 101 is displaced downward by its own weight, and the door body Dp slides downward. In this manner, the opening formed between the guide rails GG can be opened and closed by moving the door body Dp up and down. When the motor M is not used in the present configuration, the user can turn the handle H to move the door body Dp up and down.

  In the present embodiment, as shown in FIGS. 9A and 9B, a first through hole 111 a penetrating the movable pulley 111 is opened at the center of the movable pulley 111. The fixing member 112 has a second through-hole 112a penetrating the fixing member 112. Then, as shown in FIG. 9B, with the movable pulley 111 inserted into the fixing member 112, the fixing pin 14 is inserted into both the first through hole 111a and the second through hole 112a. The fixing pin 14 is a metal member formed by a large-diameter head 14a and a rod-shaped insertion portion 14b, as in the first embodiment. Further, the fixing pin 14 is provided with the E ring 15 and the like in the same manner as in the first embodiment.

  As shown in FIG. 9B, the fixing pin 14 has a hole 14d that penetrates the fixing pin 14 in the axial direction. Then, the string-like member 21 is inserted into the hole 14d of the fixing pin 14. Accordingly, even when the fixing pin 14 is broken by receiving a shearing force between the movable pulley 111 and the fixing member 112, the string-shaped member 21 can support the fixing member 112. That is, even when the strength of the connection between the movable pulley 111 and the fixed member 112 by the fixed pin 14 is reduced, the connected state between the movable pulley 111 and the fixed member 112 can be maintained by the string-shaped member 21, so that the door body Dp Can be prevented from falling.

  Further, when the fixing pin 14 breaks, the fixing member 112 is lowered from the position before the break with respect to the movable pulley 111. Therefore, the user of the door body Dp can externally confirm that the connection strength of the suspension structure 101 has been reduced.

  Next, a support structure 201 (hereinafter, simply referred to as a “support structure”) 201 for a heavy object according to a third embodiment of the present invention will be described with reference to FIGS. 10 and 11. As shown in FIGS. 10 and 11, a support structure 201 according to the present embodiment supports a heavy door body 221 above a rotation support portion 210 as a support member.

  As shown in FIGS. 10 and 11, the door body 221 pivots up and down to open and close an opening Wa formed in the wall W. Two support columns 225 extending downward are fixed to the door body 221. The base ends of the support columns 225 are rotatably connected to support column fixing plates 222 fixed to the wall W. Specifically, support portions 223 and 223 are provided upright on the support column fixing plate 222, and base ends of the support columns 225 are rotatably connected to the support portions 223 and 223 by pivot pins 224. I have. Thereby, the door main body 221 is made rotatable with respect to the wall body W.

  The central portion of the door body 221 is supported from below by the rotation support portion 210. The rotation support portion 210 includes a rotation base end 214, a cylinder 215 fixed to the rotation base end 214, a rod 216 extending from the cylinder 215, and a first connection provided at a tip of the rod 216. It is composed of a rotating tip 217 as a member. The rotation support section 210 is configured to be expandable and contractible by adjusting the extension amount of the rod 216 from the cylinder 215.

  A rotation base end 214 of the rotation support portion 210 is rotatably connected to a fixed plate 211 fixed to the wall W. Specifically, support portions 212 are erected on the fixed plate 211, and the rotation base end portion 214 is rotatably connected to the support portions 212 by a pivot pin 213. Thus, the rotation support portion 210 can be rotated with respect to the wall W.

  The rotation tip 217 of the rotation support portion 210 is rotatably connected to the rotation support plates 218 218 that are second connection members fixed to the door body 221. Specifically, through holes are opened in the rotation support plates 218. Further, a through-hole penetrating through the turning tip 217 is opened in the turning tip 217. Then, as shown in FIG. 10, the fixing pins 14 are inserted into the respective through-holes in a state where the turning tip 217 is inserted between the turning support plates 218. The fixing pin 14 is a metal member formed of a large-diameter head and a rod-shaped insertion portion, as in the first embodiment. The fixing pin 14 is provided with an E-ring and the like in the same manner as in the first embodiment.

  In the door main body 221 configured as described above, the rotation support section 210 adjusts the extension amount of the rod 216 from the cylinder 215, so that the door main body 221 moves up and down as shown in FIGS. 11 (a) and 11 (b). To rotate. Thereby, the door body 221 can open and close the opening Wa formed in the wall W. Specifically, by increasing the amount of extension of the rod 216 from the cylinder 215, the door main body 221 closes the opening Wa as shown by the one-dot chain line arrow in FIG.

  As in the above-described embodiment, the fixing pin 14 has a hole that penetrates the fixing pin 14 in the axial direction. Then, the string-shaped member 21 is inserted into the hole of the fixing pin 14. Accordingly, even when the fixing pin 14 is broken by receiving a shearing force between the rotation support plates 218 and 218 and the rotation tip 217, the cord-like member 21 supports the rotation support plates 218 and 218. Can be. That is, even when the strength of the connection between the rotation support plates 218 and 218 and the rotation tip 217 by the fixing pin 14 is reduced, the connection between the rotation support plates 218 and 218 and the rotation tip 217 by the string-shaped member 21. Since the state can be maintained, the opening and closing function of the opening Wa by the door body 211 can be maintained.

  Further, when the fixing pin 14 is broken in the open state of the door body 211, the rotation support plates 218 are lowered with respect to the rotation front end 217 from the position before the break. Therefore, the user of the door body 211 can externally confirm that the connection strength has been reduced in the support structure 201.

  Next, a support structure 301 according to a fourth embodiment of the present invention will be described with reference to FIG. As shown in FIGS. 12A and 12B, a support structure 301 according to the present embodiment supports a heavy door body 321 below a rotation support portion 310 as a support member.

  As shown in FIG. 12, the door body 321 pivots up and down to open and close an opening Wa formed in the wall W. A bracket 325 is fixed to the door body 321. The bracket 325 is rotatably connected to a fixing portion 322 fixed to the wall W. Specifically, a support portion 323 is fixed to the fixing portion 322, and a bracket 325 is rotatably connected to the support portion 323 by a pivot pin 324. Thereby, the door main body 321 is rotatable with respect to the wall W.

  The door body 321 is supported from above by the rotation support portion 310. The rotation support section 310 includes a motor 315 rotatably supported by a support section (not shown) and a rod 316 inserted into the motor 316, and a distal end of the rod 316 is configured as a first connection member. You. The rotation support section 310 is configured to be able to adjust the extension amount of the rod 316 from the motor 315.

  The tip of the rod 316 in the rotation support portion 310 is rotatably connected to a rotation support plate 318 that is a second connection member fixed to the door body 321. Specifically, a through hole is opened in the rotation support plate 318. Also, a through hole is opened at the tip of the rod 316. Then, as shown in FIG. 12, the fixing pins 14 are inserted into the respective through holes in a state where the tip of the rod 316 is inserted into the rotation support plate 318. The fixing pin 14 is a metal member formed of a large-diameter head and a rod-shaped insertion portion, as in the first embodiment. The fixing pin 14 is provided with an E-ring and the like in the same manner as in the first embodiment.

  In the door main body 321 configured as described above, the rotation support section 310 adjusts the extension amount of the rod 316 from the motor 315, so that the door main body 321 moves up and down as shown in FIGS. 12 (a) and 12 (b). To rotate. Thus, the door body 321 can open and close the opening Wa formed in the wall W. Specifically, by increasing the amount of extension of the rod 316 from the motor 315, the door main body 321 closes the opening Wa as shown by the dashed line arrow in FIG.

  As in the above-described embodiment, the fixing pin 14 has a hole that penetrates the fixing pin 14 in the axial direction. Then, the string-shaped member 21 is inserted into the hole of the fixing pin 14. Accordingly, even when the fixing pin 14 is broken by receiving a shearing force between the rotation support plate 318 and the tip of the rod 316, the cord-like member 21 can support the rotation support plate 318. That is, even when the strength of the connection between the rotation support plate 318 and the distal end of the rod 316 by the fixing pin 14 decreases, the connection state between the rotation support plate 318 and the distal end of the rod 316 is maintained by the string-shaped member 21. Therefore, the function of opening and closing the opening Wa by the door body 311 can be maintained.

  When the fixing pin 14 is broken in the open state of the door body 311, the rotation support plate 318 is lowered from the position before the break with respect to the tip of the rod 316. Therefore, the user of the door body 311 can externally confirm that the connection strength has been reduced in the support structure 301.

1 Suspension structure for heavy objects (suspension structure)
1L Left suspension structure 1R Right suspension structure
11 first connecting member 11a first through hole
11s Mark 12 Second connecting member
12a Second through hole 12h Insertion hole
13 Reinforcing rib 14 Fixing pin
14a head 14b insertion part
14c groove 14d hole
15 E-ring 16 Washer
21 String member 22 Clip
101 Suspension structure for heavy objects (suspension structure)
111 Movable pulley (first connecting member)
111a first through hole 112 fixing member (second connecting member)
112a second through hole 113 rope
201 Support structure for heavy objects (support structure)
210 Rotation support part (support member)
211 Fixing plate 212 Support
213 pivot pin 214 pivot base end
215 Cylinder 216 Rod
217 Rotating tip (first connecting member)
218 Rotation support plate (second connecting member)
221 Door body (heavy load)
222 Support column fixing plate 223 Support section
224 pivot pin 225 support column
301 Support structure for heavy objects (support structure)
310 Rotation support part (support member)
315 motor
316 rod (first connecting member)
318 Rotation support plate (second connecting member)
321 Door body (heavy load)
322 Fixed part 323 Support part
324 pivot pin 325 bracket
B Housing C Support member
D arrow F fan
P Display panel R Cover member
S Signage (heavy load)
d Gap Dp Door body (heavy object)
Ds reinforcing member Dr guide roller
G Guide rail Gt Upper member (support member)
M Motor H Handle
P1-6 Fixed pulley U Arrow
R1 / 2 Arrow W Wall
Wa opening

Claims (7)

A first connecting member supported below the support member,
A second connecting member that supports the heavy object from above,
Either of the first connection member and the second connection member is capable of inserting the other,
The first connection member has a first through-hole passing through the first connection member,
The second connecting member has a second through-hole passing through the second connecting member,
In a state where the other is inserted into the one, the fixing pin is inserted into both the first through-hole and the second through-hole, so that the first connecting member and the second connecting member Are combined, the heavy object is suspended below the support member,
A hole is formed in the fixing pin so as to penetrate the fixing pin in the axial direction,
A hanging structure for a heavy object, wherein a string-like member is inserted through the hole. The first coupling member has a proximal end fixed to a lower side of the support member with a distal end directed downward,
The second connecting member has a base end portion fixed to an upper side of the heavy object with a front end portion directed upward,
Of the first connection member and the second connection member, at one of the end portions, an insertion hole capable of inserting the other end portion in a state where the axes thereof are aligned with each other is formed,
At the tip of the first connection member, the first through-hole that penetrates the tip of the first connection member in a direction orthogonal to the axis is opened,
The second through-hole, which penetrates the distal end of the second connecting member in a direction orthogonal to the axis, is opened at the distal end of the second connecting member,
In a state where the other end is inserted into the insertion hole at the one end, the fixing pin is inserted into both the first through-hole and the second through-hole, whereby the second The suspension structure for a heavy object according to claim 1, wherein one connecting member and the second connecting member are connected.   The suspension structure for a heavy object according to claim 2, wherein stoppers larger than the holes are formed at both ends of the string-shaped member.   The heavy-weight suspension structure according to claim 3, wherein a predetermined gap is provided between the stopper and the axial end of the fixing pin. The insertion hole is formed at a distal end of the first connection member,
In a state where the distal end of the second connecting member is inserted into the insertion hole at the distal end of the first connecting member, the fixing pin is inserted into both the first through hole and the second through hole. The suspension structure for a heavy object according to any one of claims 2 to 4, which is inserted.   A mark is formed on an outer peripheral surface of a portion covered by the one leading end portion when the first connection member and the second connection member are connected to each other at the other end portion. The suspension structure for a heavy object according to any one of claims 2 to 5. A first connection member supported by the support member,
A second connecting member for supporting a heavy object,
Either of the first connection member and the second connection member is capable of inserting the other,
The first connection member has a first through-hole passing through the first connection member,
The second connecting member has a second through-hole passing through the second connecting member,
In a state where the other is inserted into the one, the fixing pin is inserted into both the first through-hole and the second through-hole, so that the first connecting member and the second connecting member Are combined, the weight is supported by the support member,
A hole is formed in the fixing pin so as to penetrate the fixing pin in the axial direction,
A support structure for a heavy object, wherein a string-like member is inserted through the hole.

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