JP2007215711A - Stack type furniture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide stack type furniture facilitating stacking work of upper-side furniture 2 on lower-side furniture 1 at a prescribed position. <P>SOLUTION: The upper face of the lower-side furniture 1 is projected with a pair of left/right projection parts 12a and 12b, the bottom of the upper-side furniture 2 has a pair of left/right recessed parts 17a and 17b to be fitted in the pair of left/right projection parts 12a and 12b respectively and position the upper-side furniture 2 relative to the lower-side furniture 1; the pair of left/right projection parts 12a and 12b are provided in positions separated rearward by an appropriate distance from the front side of the upper face of the lower-side furniture 1; and at least the rear end parts of the pair of left/right recessed parts 17a and 17b are constituted into a groove shape being long in the front/rear direction and opened to the rear side faces of the upper-side furniture 2. The pair of left/right projection parts 12a and 12b are fittably provided in the pair of left/right groove-shape recessed parts 17a and 17b from their opening rear end parts by the rearward sliding of the upper-side furniture 2 on the upper face of the lower-side furniture 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a stacked furniture composed of lower furniture and upper furniture stacked on the lower furniture.

  This type of stacked furniture is provided with means for positioning the upper furniture stacked on the lower furniture with respect to the lower furniture. However, the upper furniture positioning means in the conventional stacked furniture projects from the upper surface of the lower furniture. The upper furniture is composed of a shaft-shaped member (dough) provided and a hole provided in the bottom surface of the upper furniture, and the upper furniture is arranged so that the shaft-shaped member of the lower furniture is fitted into the hole of the upper furniture. It was to be piled up so as to drop down.

  In the conventional stacked furniture as described above, when the upper furniture is stacked on the lower furniture, the upper furniture is such that the bottom surface of the upper furniture is higher than the upper end of the shaft-shaped member protruding from the upper surface of the lower furniture. The lower furniture side shaft-like member and the upper furniture side hole are aligned, and the lower furniture side shaft-like member and the upper furniture side hole coincide with each other in the vertical direction. Not only does the furniture have to be lowered onto the lower furniture, it takes a great deal of effort to stack the upper furniture, but also the margin between the lower furniture and the building ceiling is much higher than the height of the upper furniture. There was a problem of requiring space.

  An object of the present invention is to provide a stacked furniture that can solve the conventional problems as described above, and the means thereof is shown with reference numerals of embodiments to be described later. 1 and upper furniture 2 stacked on the lower furniture 1, and a pair of left and right protrusions 12 a and 12 b project from the upper surface of the lower furniture 1, and the bottom of the upper furniture 2. Is a stacked furniture provided with a pair of left and right recesses 17a and 17b for positioning the upper furniture 2 with respect to the lower furniture 1 by fitting to each of the pair of left and right protrusions 12a and 12b. The portions 12a and 12b are provided at positions separated from the front side of the upper surface of the lower furniture 1 by an appropriate distance rearward, and the pair of left and right recesses 17a and 17b has at least rear end portions on the rear side of the upper furniture 2. Before being released The pair of left and right protrusions 12a and 12b are formed in a pair of left and right groove-like recesses 17a and 17b by sliding backward of the upper furniture 2 on the upper surface of the lower furniture 1 and extending in the direction of the groove. It is the structure provided so that insertion was possible from the open rear end part.

  In carrying out the present invention having the above-described configuration, specifically, as described in claim 2, the pair of left and right groove-shaped recesses 17a and 17b are arranged such that the upper furniture 2 is rearward on the upper surface of the lower furniture 1. It can be configured to have a closed front end that abuts against the front ends of the pair of left and right protrusions 12a, 12b when slid to the stacked position. In addition, in the state where the upper furniture 2 is stacked at a predetermined stacking position with respect to the lower furniture 1, the connecting means 18a and 18b for connecting the lower furniture 1 and the upper furniture 2 are provided. Can be attached.

  As said protrusion part 12a, 12b, as shown in Claim 4, the long rod-shaped main body 13 which continues in the length direction of the said groove-shaped recessed part 17a, 17b, and the insertion shaft which protrudes downward from the both ends of the length direction Mounting holes 16a and 16b into which the insertion shafts 14a and 14b at both front and rear ends are inserted can be provided on the upper surface of the lower furniture 1. In this case, as described in claim 5, the long rod-like main body 13 of the protruding portions 12a and 12b is made of a metal rod-like material, and the insertion shaft portions 14a and 14b of the protruding portions 12a and 12b are made of the metal rod-like shape. It can be constructed by bending both ends of the material. Further, in this case, as described in claim 6, a pair of front and rear projections formed by bending the metal rod-like material downward at positions near both ends of the long rod-like main body 13 of the projections 12a and 12b. 15 a and 15 b are provided, and the pair of front and rear projections 15 a and 15 b can be brought into contact with the upper surface of the lower furniture 1.

  In addition, as described in claim 7, the protrusions 12a and 12b are constituted by a long rod-like body 32 having a rectangular cross section that is continuous in the length direction of the groove-like recesses 17a and 17b, and the upper surface of the lower furniture 1 Can be provided with a mounting groove 33 into which the lower half of the long rod-like body 32 is fitted.

  Further, as described in claim 8, the protrusions 12a and 12b are constituted by at least two shaft-like members 34a and 34b arranged at appropriate intervals in the length direction of the groove-like recesses 17a and 17b. The upper surface of the lower furniture 1 can be provided with mounting holes 35a and 35b into which the lower half portions of the shaft-like members 34a and 34b are inserted.

  The open rear end portion 36 of the groove-like recesses 17a, 17b can be configured in a sector shape having a wider cross section toward the rear as described in claim 9.

  Further, a rectangular recessed space 25 surrounded by a surrounding frame 30 is formed on the upper side of the ceiling plate 10 at the upper end of the upper furniture 2, and the projecting plate-like body 23 is freely fitted in the rectangular recessed space 25 so as to be movable up and down. Then, a plurality of push-up bolts 24 are provided on the ceiling plate 10 to support and push up the strut plate 23, and the strut plate 23 is pushed up by the push-up bolt 24 at the installation position of the stacked furniture. In the case where the projecting plate member 23 is pressed against the building ceiling surface 31, when the projecting plate member 23 is pressed against the building ceiling surface 31, the projecting plate 23 is pressed. The height of the stacked furniture including the surrounding frame 30 can be set so that the entire body 23 does not protrude upward from the surrounding frame 30.

  According to the stacked furniture according to the present invention having the above-described configuration, when the upper furniture is stacked on the lower furniture, between the front upper side of the lower furniture and the pair of left and right protrusions, the bottom rear side of the upper furniture. A pair of left and right protrusions on the lower furniture side simply by pushing the upper furniture backward and sliding on the lower furniture with the side furniture placed and the upper furniture aligned with the lower furniture in the lateral direction. The upper furniture can be stacked in a state where the upper furniture is positioned with respect to the lower furniture at least with respect to the horizontal direction. That is, it is not necessary to lift the upper furniture to a level higher than the protrusion on the lower furniture side as in the prior art, and to align and lower the upper furniture with respect to the lower furniture in the air. Since it is only necessary to slide the upper furniture backward while keeping it in the furniture, the upper furniture can be easily stacked on the lower furniture. Also, according to the configuration of the present invention, the height between the upper surface of the lower furniture and the ceiling surface of the building should be slightly higher than the height of the upper furniture, so that the upper end of the stacked furniture approaches the building ceiling surface. By setting the height of the stacking furniture, it is possible to configure the stacking furniture having high safety with little or no fear of lodging when an earthquake occurs.

  In addition, according to the structure of Claim 2, the upper furniture can be easily positioned not only in the lateral direction but also in the front-rear direction with respect to the lower furniture, and the accurate stacking operation of the upper furniture with respect to the lower furniture Can be easily performed. Moreover, according to the structure of Claim 3, since lower furniture and upper furniture are finally connected with a connection means, it can prevent that upper furniture raise | generates a position shift with respect to lower furniture, After installing the stacked furniture, it is possible to prevent a dangerous situation such as the upper furniture being displaced forward with respect to the lower furniture due to the occurrence of an earthquake or the like.

  Moreover, according to the structure of Claim 4, since the protrusion part by the side of a lower furniture is a long rod-shaped thing continued in the length direction of the groove-shaped recessed part by the side of an upper furniture, each of a pair of right and left protrusion parts Compared to the case where is composed of a single shaft-shaped member, once the front end of the lower furniture-side protruding portion has entered the open rear end of the groove-shaped recess on the upper furniture side, The upper furniture that is slid by being pushed does not change in the horizontal direction, and the upper furniture can be easily moved straight forward to reach the predetermined stacking position, and the position of the stacked upper furniture Can be held strongly by abutting the full length of the long rod-shaped protrusion on the lower furniture side and the side surface of the groove-shaped recess on the upper furniture side. Moreover, on the lower furniture side, it is only necessary to provide a pair of front and rear mounting holes for inserting the insertion shaft portions at the front and rear ends of the long rod-shaped main body, and a case in which a groove for fitting the entire length of the long rod-shaped main body must be provided. Not only is the processing on the lower furniture side easier to compare, but even when the long rod-shaped main body is not attached to use only the lower furniture, there are only a pair of front and rear attachment holes, Even if the mounting hole is not blocked, it does not cause much problems in terms of appearance. Of course, even when the mounting hole is closed, the operation is easier than in the case where the groove is provided as described above.

  When adopting the configuration described in claim 4 above, the long rod-shaped main body is made of, for example, a wooden square bar material, and the insertion shaft portion which is a separate part is attached to both sides of the long rod-shaped main body. However, according to the configuration of the fifth aspect, the entire member composed of the long rod-shaped main body and the insertion shaft portions at both ends thereof can be easily and inexpensively configured by bending a single metal rod-shaped material. In this case, if the description in claim 6 is adopted, the metal bar-like material is used with a relatively thin wire diameter while increasing the protruding height from the lower furniture upper surface of the long bar-like body, When the depth of fitting with the grooved recess on the upper furniture side can be increased, and the height of the protrusion from the lower furniture upper surface of the long rod-shaped main body is regulated by the depth of the mounting hole provided on the lower furniture side The mounting hole can be easily processed.

  Moreover, according to the structure of Claim 7, the said protrusion part can be comprised cheaply only from the rod-shaped body with a long rectangular cross section, and according to the structure of Claim 8, it is several shaft-shaped. The projecting portion can be configured at a very low cost by a member (a dowel). In particular, when the configuration described in claim 8 is employed, the effects of the configuration according to claim 4 described above can be obtained at the same time with respect to processing on the lower furniture side.

  Further, according to the configuration of claim 9, when the rear side of the upper furniture is placed on the front side of the upper surface of the lower furniture, even if the position of the upper furniture is slightly shifted with respect to the horizontal direction, the upper furniture When the upper furniture side is pushed and slid, the lower furniture side protrusion can be surely fitted into the upper furniture side groove-like recess, and the upper furniture can be stacked more easily.

  As described above, according to the configuration of the present invention, the height of the stacked furniture is set so that the upper end of the stacked furniture is close to the ceiling surface of the building, and there is no risk of lodging when an earthquake occurs. In this case, by adopting the configuration according to claim 10, a slight gap between the upper end of the upper furniture and the ceiling surface of the building can be formed. Further, it is possible to construct a stacked furniture that has a good appearance and has no fear of falling, as if it is filled with a platy plate for stretching, and is built between the floor of the building and the ceiling of the building. In other words, the present invention has made it possible to put to practical use the stacked furniture provided with such tension means.

  A specific embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, 1 is lower furniture, and 2 is upper furniture stacked on the lower furniture 1. In the lower furniture 1 and the upper furniture 2 shown in this embodiment, the storage spaces opened and closed by the double doors 3 and 4 are left and right side plates 5a to 6b, bottom plates 7 and 8, ceiling plates 9 and 10, and a back plate. It consists of Further, a tension device 11 is provided at the upper end of the upper furniture 2.

  The detailed structure of the stacked portion of the lower furniture 1 and the upper furniture 2 will be described with reference to FIGS. 2 to 4. On the upper surface of the lower furniture 1, specifically, the upper end surfaces of the left and right side plates 5 a and 5 b, Protruding portions 12a and 12b which are long in the front-rear direction are detachably provided in the rear half region of the upper end surfaces of the left and right side plates 5a and 5b. The protrusions 12a and 12b are a pair of front and rear insertions formed by bending a metal rod-shaped body 13 made of a single metal rod-like material in the front-rear direction and bending both ends of the metal rod-like material downward at a substantially right angle. Shaft portions 14a, 14b, and projections 15a, 15b formed by bending the metal rod-like material downward in a V shape at positions near both ends of the rod-shaped main body 13, and left and right side plates 5a, The insertion shaft portions 14a, 14b are press-fitted and attached to a pair of front and rear mounting holes 16a, 16b provided at the upper end of 5b. The insertion depths of the insertion shaft portions 14a and 14b are regulated by bringing the pair of front and rear projections 15a and 15b into contact with the upper end surfaces of the left and right side plates 5a and 5b. It is configured to be parallel to the upper end surfaces of 5a and 5b and to be held at a predetermined height.

  When the upper furniture 2 is stacked at a predetermined stacking position with respect to the lower furniture 1 as shown in FIGS. 1 and 2 on the bottom surface of the upper furniture 2, specifically, the lower end surfaces of the left and right side plates 6a and 6b, Groove-shaped recesses 17a and 17b are provided so that a pair of left and right protrusions 12a and 12b (bar-shaped main body 13) on the lower furniture 1 side are fitted. The groove-shaped recesses 17a and 17b are closed front ends with which the front ends of the protruding portions 12a and 12b (rod-shaped main body 13) abut when the upper furniture 2 is stacked at a predetermined stacking position with respect to the lower furniture 1 as described above. And the rear end reaches the rear side of the upper furniture 2 and is open.

  In this embodiment, a pair of left and right connecting means 18a and 18b for connecting and integrating the lower furniture 1 and the upper furniture 2 in a state where the upper furniture 2 is stacked at a predetermined stacking position with respect to the lower furniture 1 are provided. Yes. The two connecting means 18a and 18b are arranged at two left and right positions on the ceiling plate 9 of the lower furniture 1 so that the upper furniture 2 is positioned concentrically with the lower furniture 1 when the upper furniture 2 is stacked at a predetermined stacking position. Vertical through-holes 19 and 20 provided at two places on the left and right of the bottom plate 8 of the upper furniture 2, bolts 21 inserted through the vertical through-holes 19 and 20 positioned concentrically above and below, and screwed into the bolts 21 It is comprised with the nut 22 fastened.

  As shown in FIGS. 5 and 6, the tensioning device 11 included in the upper furniture 2 includes a tensioning plate-like body 23 and a pair of left and right lifting bolts 24 that support and push it up. The strut plate-like body 23 is loosely fitted in a rectangular recessed space 25 formed on the upper side of the ceiling plate 10 of the upper furniture 2 so as to freely move up and down. Each of the pair of left and right push-up bolts 24 is A female screw body 26 fitted and fixed to the ceiling board 10 from above is screwed vertically through, and a rotation operating portion 24a is provided at the lower end, and a conical pusher 24b attached to the upper end is relatively rotatable. I have. A shallow recess is formed on the bottom surface of the tension plate 23 so that the pusher 24b at the upper end of both the push-up bolts 24 is just fitted. The rectangular recessed space 25 is constituted by a surrounding frame 30 formed from a front side plate portion 27, left and right side plate portions 28 a and 28 b, and a back plate portion 29 disposed around the ceiling plate 10. The left and right side plates 28a and 28b are also used as upper ends of the left and right side plates 6a and 6b extending upward from the ceiling plate 10. Further, the back plate portion 29 can be omitted.

  The method of installing the stacked furniture composed of the lower furniture 1 and the upper furniture 2 having the above-described configuration will be described. As shown in FIGS. 3 and 4, the front half of the upper surface of the lower furniture 1 installed at a predetermined position, that is, The rear half of the bottom surface of the upper furniture 2 is placed on the upper surface area in front of the pair of left and right protrusions 12a and 12b. At this time, the tension plate-like body 23 of the tension device 11 is lowered by screwing back the push-up bolt 24 and accommodated in the rectangular recessed space 25 in the surrounding frame 30. Next, the state in which the left and right lateral plates of the upper furniture 2 are aligned with the lower furniture 1 (the left and right side plates 5a and 5b of the lower furniture 1 and the left and right side plates 6a and 6b of the upper furniture 2 are related to the left and right lateral directions. In the state of just matching), the upper furniture 2 is pushed backward to slide the upper furniture 2 back on the upper surface of the lower furniture 1, and the right and left groove-like recesses 17a and 17b on the upper furniture 2 side A pair of left and right protrusions 12a and 12b (bar-shaped main body 13) on the lower furniture 1 side are relatively entered from the open rear ends of the groove-shaped recesses 17a and 17b, and a pair of left and right protrusions 12a and 12b (bar-shaped main body 13) are inserted. ) And the upper furniture 2 are slid backward until the closed front ends of the pair of left and right groove-shaped recesses 17a and 17b come into contact with each other.

  Since the upper furniture 2 can be stacked at a predetermined stacking position with respect to the lower furniture 1 by pushing the upper furniture 2 rearward on the lower furniture 1, the ceiling plate 9 of the lower furniture 1 in such a state. And the bottom plate 8 of the upper furniture 2 are joined and integrated by connecting means 18a and 18b at two places on the left and right. That is, when the upper furniture 2 is stacked at a predetermined stacking position with respect to the lower furniture 1, a pair of left and right vertical through holes 19 of the ceiling plate 9 of the lower furniture 1 and a pair of left and right vertical holes of the bottom plate 8 of the upper furniture 2. Since the through hole 20 coincides with the upper and lower concentric shapes, the bolt 21 is inserted into the upper and lower vertical through holes 19 and 20, and the nut 22 is screwed and fastened. The two bottom plates 8 are fastened to each other.

  Assembling of the stacked furniture composed of the lower furniture 1 and the upper furniture 2 is completed by the above operation. At this time, as shown in FIGS. 1 and 5, the total height of the stacked furniture (the height H2 of the lower furniture 1 and The gap α, which is the difference between the value H2 + H3) obtained by adding the height H3 of the upper furniture 2 and the height H1 of the building ceiling surface 31, is the upper end of the upper furniture 2 (the upper end of the surrounding frame 30) and the building ceiling surface 31. Formed between. The lower furniture 1 and the upper furniture 2 are manufactured so that the gap α is equal to or smaller than the thickness t of the tension plate 23 of the tension device 11. Generally, the height H3 of the upper furniture 2 is set for the lower furniture 1 of the specified height H2 so that the gap α can be secured according to the height H1 of the building ceiling surface 31. Furniture 2 will be manufactured.

  If the above conditions are satisfied, after installing the stacked furniture, the pair of left and right push-up bolts 24 in the tensioning device 11 are screwed to raise the tensioning plate-like body 23, and the tensioning plate-like body 23 is moved to the ceiling of the building. When the stacked furniture is pressed against the surface 31 and fixed between the building floor surface and the ceiling surface 31 and fixed, the bottom surface of the supporting plate 23 is substantially flush with the upper end of the surrounding frame 30 or The bottom of the tension plate 23 is fitted in the surrounding frame 30 (inside the rectangular recessed space 25), and even when viewed from the side, the upper end of the upper furniture 2 (the upper end of the surrounding frame 30) There is no gap between the building ceiling surface 31.

  Although a pair of left and right connecting means 18a and 18b are provided side by side, when the left and right horizontal width of the upper furniture 2 is large, three or more connecting means are arranged in the left and right lateral direction to lower the furniture 1 And the upper furniture 2 can be combined and integrated. When only the lower furniture 1 is used, the pair of front and rear insertion shaft portions 14a and 14b of the rod-shaped main body 13 which are the protruding portions 12a and 12b are pulled out from the mounting holes 16a and 16b on the lower furniture 1 side. 12a and 12b can be eliminated. In this case, it is possible to obscure the presence of the mounting holes 16a and 16b by, for example, driving and fixing the wooden shaft-like members into the mounting holes 16a and 16b as necessary.

  As shown in FIG. 7, the pair of left and right protrusions 12a and 12b required on the lower furniture 1 side is made of wood or the like that continues in the front-rear direction (continues in the length direction of the groove-shaped recesses 17a and 17b). A rod-like body 32 having a long rectangular cross section can also be used. In this case, a mounting groove 33 is provided on the upper surface of the lower furniture 1 to fit the lower half portion of the rod-like body 32 and detachably fix the rod-like body 32. Moreover, as shown in FIG. 8, each protrusion part 12a, 12b can also be comprised from at least 2 shaft-shaped member 34a, 34b. In this case, the lower half of each shaft-shaped member 34a, 34b is inserted into the upper surface of the lower furniture at appropriate intervals in the front-rear direction (at appropriate intervals in the length direction of the groove-shaped recesses 17a, 17b). Mounting holes 35a and 35b are provided for detachably fixing the shaped members 34a and 34b. Also in these cases, when using only the lower furniture 1, the rod-like body 32 and the shaft-like members 34a and 34b which are the protruding portions 12a and 12b are pulled out from the attachment groove 33 and the attachment holes 35a and 35b, and as necessary. Thus, it is possible to obscure the presence of the mounting groove 33 and the mounting holes 35a and 35b by filling the mounting grooves 33 and the mounting holes 35a and 35b with a buried tree.

  Furthermore, as shown in FIG. 9, the groove-like recesses 17 a and 17 b provided on the upper furniture 2 side may be provided so as to continue over the entire length of the front and rear depth of the upper furniture 2. In this case, since the upper furniture 2 slid rearward on the lower furniture 1 cannot be stopped at a predetermined stacking position, the front edge of the upper furniture 2 is in a predetermined position with respect to the front edge of the lower furniture 1. The operation of pushing the upper furniture 2 to the rear must be finished when it has reached.

  Also, as shown in FIG. 10, the open rear end 36 of the groove-like recesses 17a and 17b is wider toward the rear in order to facilitate and ensure the entry of the protrusions 12a and 12b on the lower furniture 1 side. It is desirable to constitute a cross section fan shape.

It is a front view which shows the whole stacked furniture in an installation state. Fig. A is a partially longitudinal side view showing a stacked portion of lower furniture and upper furniture, and Fig. B is a partially cutaway side view of the stacked portion. It is a partial notch side view of the principal part which shows the state in the middle of the stacking operation | work of the upper furniture with respect to lower furniture. FIG. 4 is a cross-sectional plan view of the main part of FIG. 3. It is a partially longitudinal front view which shows the tension apparatus of an upper furniture upper end. It is a partially notched top view which shows the tension apparatus. Fig. A is a partially longitudinal side view of the main part showing a modification of the protruding part, and Fig. B is a plan view of the main part. Fig. A is a partially longitudinal side view of the main part showing another modification of the protruding part, and Fig. B is a plan view of the main part. Fig. A is a partially longitudinal side view of the main part showing a modification of the groove-shaped recess, and Fig. B is a transverse plan view of the main part. It is a cross-sectional top view of the principal part which shows the other modification of a groove-shaped recessed part.

Explanation of symbols

1 Lower furniture (base)
2 Upper furniture (upper stand)
5a to 6b Left and right side plates 7, 8 Bottom plate 9, 10 Ceiling plate 11 Stretching device 12a, 12b Protruding portion 13 Long rod-shaped main body 14a, 14b Inserting shaft portion 15a, 15b Protruding portion 16a, 16b, 35a, 35b Mounting hole 17a, 17b Groove-shaped recesses 18a, 18b Connecting means 23 Stretching plate-like body 24 Push-up bolt 25 Rectangular recessed space 30 Enclosure frame 31 Building ceiling surface 32 Bar-shaped body having a long rectangular cross section (protrusion)
33 Mounting grooves 34a, 34b Shaft-shaped member 36 Open rear end of groove-shaped recess

Claims (10)

  Stacked furniture comprising lower furniture and upper furniture stacked on the lower furniture, a pair of left and right protrusions projecting from the upper surface of the lower furniture, and the pair of left and right In the stacked furniture provided with a pair of left and right recesses that are fitted to each of the protrusions and position the upper furniture relative to the lower furniture, the pair of left and right protrusions is more appropriate than the front side of the upper surface of the lower furniture The pair of left and right recesses are provided at positions separated rearward by a distance, and at least a rear end portion is formed in a groove shape long in the front-rear direction opened on the rear side surface of the upper furniture, and the pair of left and right protrusions is Stacked furniture provided so as to be fitted into the pair of left and right groove-like recesses from its open rear end by sliding the upper furniture rearward on the upper surface of the lower furniture.   The pair of left and right groove-shaped recesses has a closed front end that comes into contact with the front ends of the pair of left and right protrusions when the upper furniture slides backward to a predetermined stacking position on the upper surface of the lower furniture. Stacked furniture as described.   The stacked furniture according to claim 1 or 2, further comprising a connecting means for connecting the lower furniture and the upper furniture in a state where the upper furniture is stacked at a predetermined stack position with respect to the lower furniture.   The projecting portion is composed of a long rod-like main body continuous in the length direction of the groove-shaped recess and an insertion shaft portion projecting downward from both ends in the length direction. The stacked furniture according to any one of claims 1 to 3, wherein a mounting hole into which the shaft portion is inserted is provided.   The stacked furniture according to claim 4, wherein the bar-shaped main body having a long protruding portion is made of a metal rod-shaped material, and the insertion shaft portion of the protruding portion is formed by bending both ends of the metal rod-shaped material.   A pair of front and rear projections formed by bending the metal bar-like material downward are provided at positions near both ends of the long rod-like main body of the projection, and the pair of front and rear projections are provided on the upper surface of the lower furniture. The stacked furniture according to claim 5, which is in contact with the stacked furniture.   The projecting portion is composed of a long rod-shaped body having a rectangular cross section that is continuous in the length direction of the groove-shaped recess, and a mounting groove into which the lower half of the long rod-shaped body is fitted is provided on the upper surface of the lower furniture. The stacked furniture according to any one of claims 1 to 3.   The projecting portion is composed of at least two shaft-shaped members arranged at appropriate intervals in the length direction of the groove-shaped recess, and the lower half of each shaft-shaped member is inserted into the upper surface of the lower furniture. The stacked furniture according to any one of claims 1 to 3, wherein a mounting hole is provided.   The stacked furniture according to any one of claims 1 to 8, wherein the open rear end portion of the groove-shaped recess is configured in a sectoral cross-sectional shape that increases in width toward the rear. A rectangular recessed space surrounded by a surrounding frame is formed on the upper side of the ceiling plate at the upper end of the upper furniture, and a stretching plate is loosely fitted in the rectangular recessed space so as to freely move up and down. A plurality of push-up bolts that support and push up are provided on the ceiling plate. The push-up plate is pushed up by the push-up bolt, and the push-up plate is pressed against the building ceiling surface at the installation position of the stacked furniture. The height of the stacked furniture including the surrounding frame is set so that the entire plate for stretching does not protrude upward from the surrounding frame. Stacked furniture according to item 1.

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