JP4779138B2 - Coupling, furniture or fixtures - Google Patents

Description

  The present invention relates to a coupler used for connecting components of furniture and furniture.

The applicant has already developed a non-bolt specification desk that can be assembled without using tools such as bolts and screwdrivers (see the following patent document). This desk is made up of a plurality of members made of sheet metal material, and the members are attached to each other by inserting a hard resin coupler into the through holes made in the metal plate surface of each member. It is connected. The reason why the coupling tool is made of resin is to use the elastic deformation of the resin to closely fit the coupling tool to the through hole.
Japanese Patent Application No. 2004-332497 Japanese Patent Application No. 2004-332498

  However, when a very strong impact is applied to any of the constituent members, there is a possibility that damage such as cracks may occur due to excessive shearing force acting on the coupler.

  An object of the present invention made in view of the above is to keep the members firmly connected to each other and prevent the coupler from being damaged even if an excessive shearing force acts on the coupler.

  In order to solve the above-described problems, in the present invention, in order to connect a plurality of members formed by processing a sheet metal material to each other, a plurality of metal plates are coupled in an overlapped state, A resin-made main body that is inserted into a through-hole (not necessarily limited in its peripheral edge) formed in each metal plate and prevents the metal plates from being displaced relative to each other in parallel; and And a metal breakage prevention body having a protective edge that is mounted on the main body and has a protective edge positioned inwardly with respect to an engagement edge engaging with a predetermined portion of the opening edge of the through hole in the main body. did. If this is the case, when an excessive shearing force acts on the main body trying to relatively displace the metal plates in parallel with each other, the breakage prevention body receives the shearing force via the protective edge. Damage to the body can be prevented.

  If the breakage prevention body includes a pair of face plate portions arranged so as to be substantially orthogonal to the metal plate, and forms a protective edge similar to each of the face plate portions, each face plate The compressive strength of the part can counter the shearing force and prevent the body from being damaged.

  If the double-sided plate portions of the damage prevention body are respectively brought into contact with both outer side surfaces of the main body and substantially cover these outer side surfaces, the possibility of damage to the main body can be further reduced.

  If the main body is provided with a contact surface facing a direction substantially parallel to the direction in which the shearing force is applied, and at least a part of the edge of the face plate portion is in close contact with or in close proximity to the contact surface, the breakage prevention body Can be reliably positioned with respect to the main body.

  If it is provided with a latching portion that engages and latches with a latching hole formed in any of a plurality of members that are connected to each other, the coupler is moored to any member. And it is possible to avoid losing the coupler.

  The coupler according to the present invention is particularly useful for assembling non-bolt furniture or furniture.

  According to the present invention, the members can be firmly connected to each other, and even if an excessive shearing force is applied to the coupler connecting the members, the coupler can be prevented from being damaged.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 and FIG. 2 show a desk in which the coupler according to the present invention is used to connect a leg element and a curtain.

  The desk in the present embodiment includes a top plate 1, a leg element that is detachably connected to the top plate 1, that is, a sleeve 2 and a leg body 3 that support the top plate 1 from below, and a connection between the top plate 1 and the sleeve 2. Fastener 4 that prevents release, curtain plate 5 that is detachably installed between the opposing surfaces of sleeve 2 and leg 3, shields the lower limb space, sleeve 2 The coupling tool 6 for coupling to the leg body 3 and the coupling tool 7 for coupling the lower portions of the left and right ends of the curtain plate 5 to the sleeve and the leg body 3 are used as elements. The members such as the top plate 1, the sleeves 2, the legs 3, and the curtain plate 5 are basically formed by bending a sheet metal material.

  As shown in FIGS. 2 to 5, the top plate 1 has a substantially square basin shape in which the front edge, the rear edge and the left and right side edges of the top plate surface 11 are bent downward. A substantially channel-shaped front frame member 12, a rear frame member 13, and two intermediate frames 14 are fixed by welding or the like. The front frame 12 is provided at a position close to or in close contact with the front edge of the top plate 1, and the rear frame 13 is provided at a position slightly separated from the rear edge of the top plate 1 forward. The intermediate frame 14 is provided so as to divide the region between the front frame 12 and the rear frame 14 at substantially equal intervals. The bottom surfaces of these frames 12, 13, and 14 are substantially flush.

  The front frame member 12 is provided with a plurality of first engagement holes K1 symmetrically. Of the plurality of first engagement holes K1, the first first engagement hole K1 counting from the left and right ends is exclusively used for attaching the leg 3, and the second and third first engagement holes K1. Is used exclusively for attaching the sleeve 2. The first engagement hole K1 is formed by piercing a metal plate that forms the lower surface of the front member 12 in the thickness direction, and has a bottom view Dharma type in which the receiving portion K11 and the first engagement portion K12 are continuous. ing. The receiving portion K11 is a portion that receives the first engagement protrusion T1 that protrudes upward from the upper surfaces of the leg elements 2 and 3, and the first engagement portion K12 holds the leg elements 2 and 3 substantially horizontally with respect to the top plate 1. It is a site | part which engages 1st engagement protrusion T1 by making it move relatively.

  The rear frame member 13 is provided with a plurality of second outer engagement holes K2 and a plurality of second inner engagement holes K3 symmetrically. The outer second engagement hole K2 is used for attaching the leg 3 or the sleeve 2, while the inner second engagement hole K3 is exclusively used for attaching the sleeve 2. The outer second engagement hole K2 is formed by piercing a metal plate that forms the lower surface of the rear frame 13 in the thickness direction, and is substantially a bottom view in which the outer standby portion K21 and the outer second engagement portion K22 are continuous. It is L-shaped. In addition, a part of the metal plate that forms the front surface of the rear frame member 13 is cut out, and the outer standby portion K21 is also opened forward. The outer standby portion K21 is a portion that receives the second engagement protrusion T2 that protrudes upward from the upper surfaces of the leg elements 2 and 3, and the outer second engagement portion K22 allows the leg elements 2 and 3 to be attached to the top plate 1. The second engagement protrusion T2 is engaged by being relatively moved substantially horizontally. The inner second engagement hole K3 is also formed by piercing a metal plate that forms the lower surface of the rear frame member 13 in the thickness direction, and the inner standby portion K31 and the inner second engagement portion K32 are continuously viewed from below. It is almost straight. Furthermore, each inner second engagement hole K3 is inclined with respect to the rear edge of the top plate 1 so that the left and right inner second engagement holes K3 have a C shape in a bottom view. In addition, a part of the metal plate that forms the front surface of the rear frame member 13 is cut out, and the inner standby portion K31 is also opened forward. The inner standby portion K31 is a portion that receives the second engagement protrusion T2, and the inner second engagement portion K32 is a portion that engages the second engagement protrusion T2.

  As shown in FIGS. 2, 6, and 7, the sleeve 2 has a casing 22 as a main body, and a plurality of drawers 21 are held in the casing 22 so that the drawers can be inserted and removed. When the lock 211 provided on the door is driven and locked, all the drawers 21 can be locked so that they cannot be pulled out.

  The housing 22 is joined by welding or the like so as to connect the rear plate 221, the side plates 222 and 223 bent from the left and right sides of the rear plate 221 and extending forward, and the upper edges of the side plates 222 and 223. A top plate 224, a rear top plate 225, a front bottom plate 226 and a rear bottom plate 227 joined by welding or the like so as to connect the lower edges of both side plates 222, 223 are opened, and an internal space for housing the drawer 21 is opened forward. ing.

  On the left and right sides of the front top plate 224, a first engagement protrusion T1 that engages with the first engagement portion K12 is provided one by one. The first engagement protrusion T1 has a first shaft portion T11 having a diameter smaller than the inner diameter of the first engagement portion K12 and a diameter larger than the inner diameter of the first engagement portion K12, but smaller than the inner diameter of the receiving portion K11. First head T12. The upward projecting dimension of the first shaft portion T11 is set to a value approximately equal to or slightly larger than the thickness of the front frame 12 of the top plate 1. In addition, a plurality of square holes Z for inserting the claws 41 of the fastener 4 from the lower surface side are provided in the central portion of the front top plate 224.

  On the left and right ends of the rear top plate 225, a second engagement protrusion T2 that engages with the outer second engagement portion K22 or the inner second engagement portion K32 is provided one by one. The second engagement protrusion T2 includes a second shaft portion T21 having a smaller diameter than the groove width of the outer second engagement portion K22 and the inner second engagement portion K32, and the outer second engagement portion K22 and the inner second engagement. A second head T22 having a diameter larger than the groove width of the portion K32 but smaller than the groove width of the outer standby portion K21 and the inner standby portion K31 is provided. The upward projecting dimension of the second shaft portion T21 is set to a value approximately equal to or slightly larger than the thickness of the rear member 13 of the top plate 1.

  As shown in FIGS. 1 and 2, the leg 3 has an upper stay 32 and a lower stay 33 integrally fixed to upper and lower ends of a leg column 31 formed in a flat and substantially rectangular tube shape extending vertically. Is.

  A first engagement protrusion (not shown) that engages with the first engagement portion K12 is provided at the front end portion of the upper stay 32, and the outer second engagement portion is disposed at the rear end portion. A second engagement protrusion (not shown) that engages with K22 is provided. The first engagement protrusion and the second engagement protrusion are configured in the same manner as that provided on the sleeve 2.

  As shown in FIGS. 8 and 9, the curtain plate 5 has a substantially square basin shape in which the upper edge, the lower edge, and the left and right side edges of the curtain plate surface 51 are bent forward. A substantially channel-shaped or substantially rectangular tube-shaped reinforcing material 52 extending in a straight line is fixed by welding or the like. Then, the left and right side end surfaces 511 of the curtain plate 5 are arranged in contact with the inner side surfaces 222 and 311 of the leg elements 2 and 3.

  A through hole 5 a is provided in the upper part of the left and right end faces 511 of the curtain plate 5. The through-hole 5a is formed by piercing a metal plate that forms the side end surface 511 of the curtain plate 5 in the thickness direction, and has a substantially rectangular shape in side view. Attachment holes 5c are provided on both side portions of the lower end surface 512 of the curtain plate 5, and further, outer engagement holes 5d are provided on the outer side of the attachment holes 5c, and inner engagement holes 5e are provided on the inner side. The attachment hole 5c, the outer engagement hole 5d, and the inner engagement hole 5e are formed by piercing a metal plate that forms the lower end surface 512 of the curtain plate 5 in the thickness direction. The attachment hole 5c and the inner engagement hole 5e are lower surfaces. The outer engagement hole 5d is substantially T-shaped in a bottom view in which the receiving portion 5d1 and the engaging portion 5d2 are continuous. In addition, the reinforcing member 52 is provided with a hooking hole 5b at a position deviated by a predetermined distance from both left and right ends. The retaining hole 5b is formed by piercing a metal plate that forms the lower surface of the reinforcing member 52 in the thickness direction, and has a Dharma type in a bottom view in which the receiving portion 5b1 and the engaging portion 5b2 are continuous.

  In turn, a through hole X is provided at a position corresponding to the above through hole 5a on the inner side surfaces 222, 311 of the leg elements 2, 3, and at a position directly below the through hole X and corresponding to the lower end of the curtain plate 5. A mounting hole Y is provided. The through hole X and the mounting hole Y are formed by piercing a metal plate that forms the inner side surfaces 222 and 311 of the leg elements 2 and 3 in the thickness direction, and the through hole X has substantially the same shape as the side view through hole 5a. The mounting hole Y has a slot shape extending in the front-rear direction. The through hole 5 a and the through hole X are for attaching the coupler 6. Further, the attachment hole 5c, the outer engagement hole 5d, the inner engagement hole 5e, and the attachment hole Y are for attaching the coupler 7.

  As shown in FIGS. 10 to 15, the coupler 6 has a main body 61 made of a resin (for example, a hard resin such as polyamide 6) inserted into the through hole 5 a and the through hole X, and prevents the main body 61 from being damaged. And a damage preventing body 63 made of metal (for example, a steel material such as stainless steel).

  The main body 61 is integrally formed on a substrate 62 that extends vertically, and bulges in the direction of the surface of the substrate 62. The main body 61 includes a first engagement edge 61H and a second engagement edge 61L that are respectively engaged with predetermined portions of the opening edges of the through hole 5a and the through hole X, specifically, edges that are vertically opposed to each other. The substrate 62 abuts against the side end surface 511 of the curtain plate 5 from the inside when the main body 61 is inserted into the through hole 5a and the through hole X. A concave groove 621 is formed in the vicinity of the outer surface of the main body 61 in the substrate 62.

  The main body 61 includes a side wall 611 provided with a latch 611a, a first claw 613 positioned between the side walls 611 and separated from the side wall 611 by a slit 612, and a second protruding below the lower end of the substrate 62. Nail 614. The upper edge of the side wall 611 has a substantially partial arc shape centering on the second engagement edge 61L in side view. The upper surface of the first claw 613 forms a flat surface that is substantially flush with the tangent line of the upper edge of the side wall 611 when viewed from the side, protrudes from the upper edge of the side wall 611, and again reaches the upper edge of the side wall 611 at the upper end. It is refracted in a mountain shape so as to approach, and is further refracted in a valley shape in the vicinity of the upper edge of the side wall 611 to form an upward edge surface. The upward edge end surface of the first claw 613 is located slightly above the upper edge of the side wall 611, and the first engagement edge 61H is set on the edge end surface. The first claw 613 can project and retract in the vertical direction by elastic deformation, including the edge surface on which the first engagement edge 61H is set. The latch 611a provided on the side wall 611 can also project and retract in the outer surface direction by elastic deformation. On the other hand, the second claw 614 is not elastically deformed in principle. The second claw 614 exists in a pair near the lower edge of the both side walls 611, and the outer periphery thereof protrudes from the side wall 611 in the outer surface direction and the substrate 62 surface direction by the thickness of the damage prevention body 63. An upward contact surface 614a is formed. The second claw 614 and the substrate 62 are separated by a predetermined distance along the surface of the substrate 62. Then, a part of the lower edge of the side wall 611 interposed between them is an edge end face inclined so as to transition upward as approaching the side view substrate 62, and a second engagement edge 61L is set on this edge end face. Yes. The second claw 614 is provided with a retaining surface 614b substantially parallel to the surface of the substrate 62.

  The breakage prevention body 63 is manufactured by processing a steel plate or other thin plate material, etc., and is connected to both ends of the connecting portion 632 having a strip shape and bent substantially vertically to form a pair substantially parallel to each other. And a face plate portion 631 formed. The face plate portion 631 is in contact with the outer surface of the main body 61 (side wall 611) and substantially covers the outer surface, and forms a tongue piece 631b, a first protective edge 63H, and a second protective edge 63L. Except for, the contour shape is substantially the same as that of the side-view side wall 611. The tongue piece 631 b is a portion that is inserted into the concave groove 621 formed in the substrate 62. The first protective edge 63H is reserved below the first engagement edge 61H that engages with the upper edges of the through hole 5a and the through hole X, in other words, inward along the engagement direction. . Similarly, the second protective edge 63L is refrained above the second engagement edge 61L that engages the lower edge of the through hole 5a and the through hole X. In addition, the face plate portion 631 is provided with a through hole 631 a that engages with a latch 611 a provided on the side wall 611. However, it is not essential to position both the first protective edge 63H and the second protective edge 63L inward with respect to the first engagement edge 61H and the second engagement edge 61L, and either one of them is the first engagement edge. It may be in the same position as the side edge view 61H or the second engagement edge 61L.

  When attaching the damage prevention body 63 to the main body 61, the tongue piece 631 b is inserted into the concave groove 621 of the substrate 62 and covered so that the inner surfaces of the connecting portion 632 and the face plate portion 631 are in contact with the outer surface of the main body 61. At the same time, the latch 611a is engaged with the through hole 631a to prevent detachment. At this time, the lower end edge (at least a part thereof) of the connecting portion 632 and the face plate portion 631 contacts the contact surface 614 a of the second claw 614 to position the breakage preventing body 63 with respect to the main body 61. Of course, it goes without saying that the engagement between the tongue piece 631b and the concave groove 621 can function as positioning.

  Thus, when connecting the curtain plate 5 to the leg elements 2 and 3 using the coupler 6, the side end surface 511 of the curtain plate 5 and the inner side surfaces 222 and 311 of the leg elements 2 and 3 are overlapped and penetrated. The opening edge of the hole 5a and the opening edge of the through hole X are made substantially coincident with each other in a side view, and the main body 61 of the coupler 6 is fitted from the inner side to couple them. More specifically, as shown in FIG. 14, the second engagement edge 61L is applied to the lower edge of the through hole 5a and the through hole X, and the main body 61 is rotated upward with this as a fulcrum. Then, the first claw 613 is elastically deformed and immersed, and the first engagement edge 61H is guided to the upper edge of the through hole 5a and the through hole X. When the surface of the substrate 62 is brought into contact with the side end surface 511 of the curtain plate 5, the first engagement edge 61H and the second engagement edge 61L are respectively located above and below the through hole 5a and the through hole X as shown in FIG. Engage with the edge. Further, the retaining surface 614 b of the second claw 614 contacts the inner side surfaces 222, 311 of the leg elements 2, 3 from the outer side. In addition, the double-sided plate portions 631 of the breakage preventing body 63 are in close proximity or in close proximity to the front and rear edges of the through hole 5a and the through hole X, respectively. As a result, the side end surface 511 of the curtain plate 5 is not easily displaced relatively in parallel to the inner surfaces 222 and 311 of the leg elements 2 and 3. In the operation of inserting the main body 61 into the through hole 5a and the through hole X, the first protective edge 63H and the second protective edge 63L of the breakage preventing body 63 do not rub against the upper and lower edges of the through hole 5a and the through hole X.

  When a strong impact is applied to the curtain plate 5 or the leg elements 2 and 3 and the curtain plate 5 tries to displace relative to the leg elements 2 and 3 in the vertical direction in the figure, the through-holes 5a and the through-holes X are passed through the upper and lower edges. Thus, a vertical shearing force acts on the main body 61 of the coupler 6 in the figure. If the shearing force is within an allowable limit, the first claw 613 can be elastically deformed temporarily to absorb the impact. However, if the shear force exceeds an allowable limit, the elastic deformation does not fall within the range of elastic deformation, and damage such as cracks may occur near the first engagement edge 61H or the second engagement edge 61L. There is. In response to such an event, in the coupler 6 according to the present embodiment, the main body 61 is damaged by receiving excessive shearing force in the vertical direction in the drawing at the first protective edge 63H and the second protective edge 63L of the damage preventing body 63. To prevent it. The main body 61 is protected by receiving the shearing force in the front-rear direction acting through the front and rear edges of the through-hole 5 a and the through-hole X by the face plate portion 631 of the breakage prevention body 63.

  Furthermore, the coupler 6 of the present embodiment also includes a latching portion 64 for latching in the latching hole 5b formed in the reinforcing member 52 of the curtain plate 5. The latching portion 64 includes a latching end 641 that is latched by engaging with the latching hole 5b, and a connecting body 642 that connects the latching end 641 to the main body 61 of the coupler. The latching end 641 is formed by forming a projecting piece 641c that projects the shaft 641b from the flange 641a and projects radially opposite to the intermediate portion of the shaft 641b. The flange portion 641a has a larger diameter than the diameter of the receiving portion 5b1, and the shaft portion 641b has a smaller diameter than the diameter of the engaging portion 5b2. Further, the outer dimension in the radial direction of the projecting piece 641c is smaller than the diameter of the receiving portion 5b1 and larger than the diameter of the engaging portion 5b2. The connecting body 642 is formed thin and long so as to be easily elastically deformed. In the illustrated example, the hook 641 a of the latching end 641 is connected to the upper end of the substrate 62. In particular, in this embodiment, the main body 61, the substrate 62, the connection body 642, and the latching end 641 are integrally formed. The length of the connecting body 642 is set to a value that allows the main body 61 to be inserted into and removed from the through hole 5a and the through hole X while the hook end 641 is hooked on the hook hole 5b.

  In order to anchor the coupler 6 to the curtain plate 5, the shaft portion 641b and the projecting piece 641c of the latching end 641 are inserted into the receiving portion 5b1 of the latching hole 5b and can be slid to the engaging portion 5b2 side as it is. That's fine. When the shaft portion 641b is on the engaging portion 5b2 side, the protruding piece 641c and the peripheral edge of the engaging portion 5b2 are engaged to prevent the shaft portion 641b from being pulled out, so that the coupler 6 is anchored to the curtain plate 5. The

  As shown in FIGS. 9, 16, and 17, the coupler 7 has one end inserted into the mounting hole Y of the sleeve structures 2 and 3 and the other end inserted into the mounting hole 5 c of the curtain plate 5. A support body 71 that supports the plate 5 on the leg elements 2 and 3, and a presser member 72 that engages the support body 71 so as to intersect the support body 71 and prevents the support body 71 from separating from the lower end surface of the curtain plate 5. Element.

  The support 71 is formed by bending both ends of a metal plate in directions opposite to each other, for example, a main body 713 having a presser member insertion hole 71x through which a presser member 72 can be inserted, and one end of the main body 713. A pair of leg element mounting portions 711 that hang down from the other end of the main body 713 and engage with the mounting holes 5c of the curtain plate 5 and engage with the mounting holes Y of the sleeve structures 2 and 3 And an attachment portion 712.

  The presser member 72 is, for example, a resin molded product, and protrudes from the outer end of the presser part 721 that contacts the lower surface of the support body 71 and passes through the presser member insertion hole 71x to pass through the outer engagement hole of the curtain plate 5. An outer engagement portion 722 that engages with 5d and an inner engagement portion 723 that protrudes from the inner end of the presser portion 721 and engages with the inner engagement hole 5e of the curtain plate 5 are provided. The outer engagement portion 722 is substantially parallel to the lower end surface of the curtain plate 5 with the support 71 and the pressing member 72 attached to the curtain plate 5, and sandwiches the lower end surface of the curtain plate 5 with the support 71. A possible clamping portion 7221 is formed. A locking pin 722a that expands the front-rear width is provided at the tip of the holding portion 7221, and a notch 722x is formed in the middle of both locking pins 722a. The front-rear width is changed by elastic deformation of these pins. obtain.

  The groove width of the receiving part 5d1 is slightly smaller than the front-rear width dimension including the locking pin 722a of the clamping part 7221, and the groove width of the engaging part 5d2 is the front-rear width dimension not including the locking pin 722a of the clamping part 7221. It almost matches. It is formed in a T shape having an engaging portion 5d2 having a width dimension. Therefore, the outer engagement portion 722 is not pulled out from the outer engagement hole 5d unless the tip portion is elastically deformed by inserting the clamping portion 7221 into the receiving portion 5d1 and sliding it toward the engagement portion 5d2. In addition, the inner engagement portion 723 is provided with a latch that can be protruded and retracted by elastic deformation, and once inserted into the inner engagement hole 5e, the inner engagement portion 723 cannot be pulled out from the inner engagement hole 5e unless the latch is retracted.

  In addition, the holding member 72 keeps the locking pin 722a facing the opening edge of the outer engagement hole 5d of the curtain plate 5 and uses the vicinity of the locking pin 722a as a fulcrum, as shown in FIG. And the presser position shown in FIG. If the presser member 72 is positioned at the release position, the support 71 can be removed from the sleeve structures 2 and 3 and the curtain plate 5. The operation of removing the support 71 is indicated by a chain line in FIG. If the presser member 72 is positioned at the presser position, the support 71 can be maintained in a state of being engaged with the sleeve structures 2 and 3 and the curtain plate 5.

  In the following, the procedure for assembling the desk will be outlined.

(I) Connection of the casing 22 of the sleeve 2 First, the top plate 1 is turned over and placed on the floor or the like. Then, the casing 22 of the sleeve 2 with the top and bottom reversed is positioned with respect to the top plate 1 so that the first engagement protrusion T1 and the receiving portion K11 face each other, and then placed on the top plate 1. Then, the first engaging protrusion T1 of the housing 22 is inserted into the receiving portion K11 of the top plate 1. Next, as shown in FIG. 18, when the casing 22 of the sleeve 2 is moved backward, the first engagement protrusion T1 engages with the first engagement portion K12. At the same time, the two second engaging protrusions T2 are received by the inner standby portion K31 and the outer standby portion K21. Further, when the casing 22 of the sleeve 2 is rotated along the lower surface of the top plate 1 while maintaining the engagement between the first engagement protrusion T1 and the first engagement hole K1, two second engagements are performed. The protrusion T2 engages with the outer second engaging portion K22 and the inner second engaging portion K32.

(Ii) Connection of leg body 3 With respect to the top board 1 which is turned upside down so that the first engagement protrusion T1 of the leg body 3 and the receiving portion K11 of the top board 1 face each other with the leg 3 inverted. After positioning, it is placed on the top plate 1. Then, the first engagement protrusion T1 of the leg 3 is inserted into the receiving portion K11 of the top plate 1. Next, as shown in FIG. 19, when the leg 3 is moved backward, the first engagement protrusion T1 engages with the first engagement portion K12. At the same time, the second engagement protrusion T2 is received by the outer standby portion K21. Further, when the leg 3 is rotated along the lower surface of the top plate 1 while maintaining the engagement between the first engagement protrusion T1 and the first engagement hole K1, the second engagement protrusion T2 is moved outwardly. Engage with the second engagement portion K22.

(Iii) Connection of curtain plate 5 After the leg elements 2 and 3 are connected to the top plate 1, the left and right sides of the curtain plate 5 are connected to the leg elements 2 and 3 via the above-described coupler 6 and coupler 7, respectively.

(Iv) Attaching the fastener 4 The desk assembled through the above procedure is returned so that the top and bottom are normal, the fastener 4 is attached, the housing 22 and the top plate 1 are completely coupled, and the drawer 21 is accommodated. .

  In the work of disassembling the desk, the reverse procedure is performed.

  According to the present embodiment, a plurality of metal plates (side end surface 511 of the curtain plate 5 and the side end surface 511) are connected to each other so that a plurality of members (curtain plate 5 and leg elements 2 and 3) formed by processing the sheet metal material are connected to each other. The inner side surfaces 222 and 311) of the leg elements 2 and 3 are coupled in an overlapped state, and are inserted into the through holes (5a and X) formed in the respective metal plates so that the metal plates are parallel to each other. A resin-made main body 61 that prevents relative displacement, and an engagement edge 61H, 61L that is attached to the main body 61 and engages with a predetermined portion of the opening edge of the through hole in the main body 61. Since the coupler 6 is provided with the metal breakage prevention body 63 having the protective edges 63H and 63Y facing the predetermined portion of the opening edge of the through hole, the main body 61 tries to relatively displace the metal plates in parallel with each other. When an excessive shear force is applied to the Preventer 63 is the protective rim 63H, may prevent damage to the body 61 by receiving the shear force through the 63L. And the connection of members can be kept strong.

  The breakage prevention body 63 includes a pair of face plate portions 631 disposed so as to be substantially orthogonal to the metal plate, and formed with protective edges 63H and 63L similar to the face plate portions 631. Therefore, the compressive strength of each face plate portion 631 can counter the shearing force and prevent the main body 61 from being damaged.

  Since the double-sided plate portions 631 of the breakage prevention body 63 are brought into contact with both outer side surfaces of the main body 61 and substantially cover these outer side surfaces, the possibility of damage to the main body 61 can be further reduced.

  The main body 61 is provided with a contact surface 614a facing in a direction substantially parallel to the direction in which the shearing force is applied, and at least a part of the end edge of the face plate portion 631 is in close contact with or in close proximity to the contact surface 614a. The damage prevention body 63 can be reliably positioned with respect to the main body 61.

  The coupling 6 is provided with a latching portion 64 that engages and latches with a latching hole (5b) that is drilled in any one of a plurality of members (curtain plate 5) that are connected to each other. Can be moored to any member, and the coupling tool 6 does not need to be lost when the desk is assembled or disassembled.

  The coupler 6 of this embodiment is extremely useful for assembling a desk with a non-bolt specification.

  The present invention is not limited to the embodiment described in detail above. Naturally, the coupler according to the present invention can be applied to so-called sheet metal furniture, steel furniture or furniture in general. That is, it can be used for connecting not only the desk but also components such as a locker, a wagon, a cabinet, a shelf, and a partition.

  In the said embodiment, the protective edge was comprised inside the engagement edge by attaching the face-plate part of a damage prevention body to the outer side surface of the main body of a coupling tool. In other words, the damage prevention body is packaged on the main body of the coupler. However, if the main body of the coupler has, for example, a channel shape or a cylindrical shape, a mode in which the face plate portion of the breakage preventing body is attached to the inner peripheral surface thereof can be taken. In short, a breakage prevention body can be built in the main body of the coupler.

  Further, as shown in FIG. 20, a breakage prevention body 63 is built into the main body 61 of the coupler 6 by insert molding or the like, and the engagement edges 61H, 61L of the main body 61 are protected by the protective edges 63H, 63L of the breakage prevention body 63. It is also conceivable to back up.

  Other specific configurations, processing procedures, and the like can be variously modified without departing from the spirit of the present invention.

The perspective view which shows the desk in one Embodiment of this invention. The perspective view which shows the same desk upside down. The bottom view which shows the lower surface side of a top plate. The principal part perspective view of a top plate. The principal part perspective view of a top plate. The perspective view overlooking a sleeve. The principal part perspective view of a sleeve. The principal part perspective view which shows the back surface side and side edge of a curtain. The principal part perspective view which shows the lower end of a curtain. The disassembled perspective view which shows the coupling tool of the embodiment. The side view which shows the coupling tool. The front view which shows the coupling tool. AA line principal part side sectional view showing the coupler. The BB line principal part side sectional view which shows the coupling tool. The BB line principal part side sectional view which shows the coupling tool. The principal part front sectional view which shows the lower end vicinity of the curtain connected with the leg element. The principal part front sectional view which shows the lower end vicinity of the curtain connected with the leg element. The figure which shows typically the connection operation | work to the top plate of a sleeve. The figure which shows typically the connection operation | work to the top plate of a leg. The principal part side sectional view which shows one of the modifications of this invention.

Explanation of symbols

2, 3, 5 ... member 222, 311, 511 ... metal plate X, 5a ... through hole 6 ... coupling tool 61 ... main body 61H, 61L ... engagement edge 63 ... breakage prevention body 63H, 63L ... protective edge

Claims (6)

In order to connect a plurality of members formed by processing sheet metal materials to each other, a plurality of metal plates are joined in a stacked state,
A resin-made main body that is inserted into a through-hole formed in each metal plate and suppresses relative displacement between the metal plates in parallel with each other;
A metal breakage prevention body having a protective edge that is mounted on the main body and is positioned so as to be held inward relative to an engagement edge that engages with a predetermined portion of the opening edge of the through hole in the main body;
When an excessive shearing force acts on the main body trying to relatively displace the metal plates in parallel to each other, the breakage preventing body receives the shearing force via the protective edge, thereby preventing the main body from being damaged. Ingredients. 2. The damage prevention body includes a pair of face plate portions arranged so as to be substantially orthogonal to the metal plate, and forms a protective edge similar to each of the face plate portions. Joiner. The coupling tool according to claim 2, wherein the double-sided plate portions of the breakage prevention body are respectively brought into contact with both outer side surfaces of the main body and substantially cover these outer side surfaces. The contact surface which faces the direction substantially parallel to the direction where the said shear force acts is provided in the said main body, The at least one part of the edge of the said faceplate part is closely_contact | adhered or very close to this contact surface. Joiner. The coupling tool according to claim 1, 2, 3, or 4, further comprising a latching portion that engages and latches with a latching hole formed in any of a plurality of members connected to each other. A furniture or fixture using a plurality of members formed by processing a sheet metal material as constituent elements and using the coupler according to claim 1, 2, 3, 4, or 5 when connecting the members to each other.

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