JP7200575B2 - frame connection structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a frame connection structure applied to a frame structure furniture support or the like.

Conventionally, as a frame connection structure capable of changing the longitudinal dimension, a structure in which a second frame is slidably fitted to the inner periphery of a first frame is known (see, for example, Patent Document 1).

By the way, in such a frame connection structure, there are cases where it is desired to fix the first frame and the second frame to each other while changing the attachment position. As one measure to meet such a demand, for example, bolt insertion holes are provided at predetermined locations on the first frame, and a plurality of nuts are provided on the second frame at intervals in the longitudinal direction. Then, it is conceivable that either one of the nuts is selectively matched with the bolt insertion hole by relatively sliding the two frames. That is, according to this configuration, the two frames are connected so as not to move by screwing the tightening bolt inserted through the bolt insertion hole into a nut that matches the bolt insertion hole and tightening it. By changing the nut with which the tightening bolt is screwed, the connection position of the second frame to the first frame can be changed intermittently.

However, providing a large number of nuts on the second frame leads to an increase in the number of parts and the number of manufacturing steps. is sometimes difficult.

JP 2015-73881 A

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances. An object of the present invention is to provide a frame connection structure capable of suppressing an increase in the number of parts and manufacturing man-hours.

The frame connection structure according to the invention of claim 1 comprises a first frame having a first bolt insertion hole, and a frame that is combined with the first frame so that the connection position can be changed and matches the first bolt insertion hole. a second frame having a possible second bolt insertion hole, a nut holder disposed inside the first frame and holding a nut at a portion corresponding to the first bolt insertion hole, and the nut holder tightening bolts screwed into the nuts through the first and second bolt insertion holes, wherein the nut holder allows the relative movement of the second frame with respect to the first frame The nut holder is supported by the first frame so as to be able to move between a retracted position where the second frame is pushed against the first frame by a tightening force of the tightening bolt, and a tightening position. is perpendicular to the longitudinal direction of the first frame .

The frame connection structure according to the invention of claim 2 is the frame connection structure of claim 1, wherein the second frame is fitted inside the first frame so as to be slidable in the longitudinal direction, It is constructed such that the overall longitudinal dimension can be changed by changing the connection position.

The frame connection structure according to the invention of claim 3 is the one according to claim 1 or 2, wherein the first frame has a pair of outer plates, and the second frame has one side surface. It is of open shape and the nut holder is inside the second frame and is movably connected to one outer plate of the first frame.

According to a fourth aspect of the present invention, there is provided a frame connection structure according to the second or third aspect, wherein the first frame has a first bolt insertion hole, and the second frame has a first bolt insertion hole. It has a plurality of second bolt insertion holes that selectively coincide with the first bolt insertion holes as it slides against the second bolt insertion holes, and the first bolt insertion holes and the first bolt insertion holes are arranged from the outside. It is constructed such that a tightening bolt inserted through any of the second bolt insertion holes that match the holes can be screwed into the nut held by the nut holder.

The frame connection structure according to the invention of claim 5 is the frame connection structure according to claim 4, wherein the first frame comprises an outer bottom plate, a pair of outer plates, and an upper outer portion closing the upper ends of the outer plates. The second frame has a shape in which the side facing one of the outer plates is open, the inner bottom plate along the inner surface of the outer bottom plate; It is channel-shaped and has an inner plate along the inner surface of the other outer plate and an inner upper plate extending from the upper edge of the inner plate parallel to the inner bottom plate.

The frame connection structure according to the invention of claim 6 is the frame connection structure of claim 5, wherein the nut holder includes a holder bottom plate that can be brought into contact with and separated from the inner bottom plate of the second frame, and one side edge of the holder bottom plate. and a holder side plate standing along the inner surface of one of the outer plates of the first frame, the holder side plate being movably supported by the one outer plate, and the holder The nut is provided on the bottom plate. In the present invention, the term "contactable and separable" means that the holder bottom plate and the inner bottom plate of the second frame can be brought into contact with each other and separated from each other, in other words, the holder bottom plate approaches the inner bottom plate of the second frame. It is a concept indicating that it is possible to move in the direction to and from.

According to a seventh aspect of the invention, there is provided a frame connection structure according to the sixth aspect, wherein the nut holder has connection projections on the holder side plates, and the first frame has a The plate is provided with a guide hole for movably guiding the connection projection.
According to an eighth aspect of the invention, there is provided a frame connection structure according to the first aspect, wherein the nut holder is connected to the first frame and the second frame in a state in which the nut holder is movably supported by the first frame. and are fitted together.

According to the present invention, the first frame and the second frame can be fastened and fixed to each other at any one of the intermittently set mounting positions. It is possible to provide a frame connection structure capable of suppressing the

The perspective view which shows the counter which concerns on one Embodiment of this invention. The front view which shows the counter which concerns on the same embodiment. The X section enlarged view in FIG. FIG. 3 is an enlarged cross-sectional view taken along line AA in FIG. 2; FIG. 3 is an enlarged cross-sectional view taken along line BB in FIG. 2; FIG. 6 is an enlarged cross-sectional view along line CC in the vicinity of the curtain plate in FIG. 5; FIG. 6 is an enlarged cross-sectional view along line DD near the curtain plate in FIG. 5; FIG. 6 is an enlarged cross-sectional view along line EE in the vicinity of the curtain plate in FIG. 5; The bottom side perspective view which shows the principal part of the counter which concerns on the same embodiment. The disassembled perspective view which shows the counter which concerns on the same embodiment. The expansion perspective view which shows the principal part of the support structure of the counter which concerns on the same embodiment. FIG. 4 is an explanatory diagram showing a connection mode of frames according to the embodiment; FIG. 6 is an enlarged view of a Y portion in FIG. 5; Explanatory drawing which shows the effect|action of the intermittent attachment mechanism which concerns on the same embodiment. Explanatory drawing which shows the effect|action of the intermittent attachment mechanism which concerns on the same embodiment. Explanatory drawing which shows the effect|action of the stepless attachment mechanism which concerns on the same embodiment. Explanatory drawing which shows the effect|action of the stepless attachment mechanism which concerns on the same embodiment. The back side perspective view which shows the principal part of the counter which concerns on the same embodiment. The disassembled perspective view which shows the counter which concerns on the same embodiment. The disassembled perspective view which shows the principal part of the counter which concerns on the same embodiment. The exploded perspective view which shows the attachment aspect of the curtain board which concerns on the same embodiment.

An embodiment of the present invention will be described below with reference to the drawings.

This embodiment is a case where the present invention is applied to a counter K which is one piece of furniture.

This counter K, as shown in FIGS. 1 and 2, has a support 1 supporting a top plate 2 as a furniture functional element. The support 1 consists of a support body 4 and this support It is provided with a movable end portion 5 connected to the main body 4 such that the mounting position can be changed. That is, the support 1 in this embodiment is for supporting a top plate 2 which is a furniture functional element, and the top plate 2 is supported by a support body 4 and is a main top plate portion 6 which is a main element portion. and a sub top plate portion 7 as a sub element portion slidably fitted on the main top plate portion 6 and supported by the movable end portion 5 . Then, the furniture width W can be changed by changing the mounting position of the movable end portion 5 with respect to the support body 4 and changing the overlapping margin 7k of the sub-top plate portion 7 with respect to the main top plate portion 6 as shown in FIG. is now possible. Since the counter K of this embodiment has a bilaterally symmetrical shape, only the structure of the left half will be described in detail, and the corresponding parts of the right half will be given the same reference numerals, and description thereof will be omitted.

<Support Body 4 of Support 1>
The support 1 of this embodiment has movable end portions 5 at both ends of a support body 4. The support body 4, as shown in FIGS. a pair of intermediate legs 21, an intermediate main frame 23 installed between the upper ends of these intermediate legs 21, and end main frames 25 extending from each intermediate leg 21 in the direction of each corresponding movable end 5. It is mainly composed of Each intermediate leg 21 includes front and rear leg supports 27 and 29, an upper stay 31 that rigidly connects the upper ends of the leg supports 27 and 29, and a lower stay that rigidly connects the lower ends of both leg supports 27 and 29. A stay 33 has a top plate receiving metal fitting 35 fixed to its upper end, and an adjuster 37 is provided to its lower end. On both sides of the upper stay 31, upper frame metal fittings 39 extending in the direction of the ends are projected. The main frames 23 and 25 are in the shape of a square hype, as will be described in detail later, and are provided with a plurality of top plate mounting brackets 41 on the side surface on the side opposite to the use end.

<Movable End 5 of Support 1>
As shown in FIGS. 2 to 5, 9 to 11, and 19 to 21, the movable end 5 has an end leg 43 which is a leg on the movable end 5 side, and an end leg 43 extending from the upper end of the end leg 43. The sub-frame 45 protrudes and the sub-frame 45 protrudes, and the tip side of the sub-frame 45 is slidably fitted in the main frame 25 at the end of the support body 4 . The end leg 43 includes a front leg support 47, a lateral rear leg support 49 located behind the lateral leg support 47, a medial rear leg support 51 disposed medially of the lateral rear leg support 49, An upper vertical stay 53 and an upper horizontal stay 55 rigidly connect the upper ends of the leg supports 47, 49 and 51, and a lower vertical stay 57 and a lower horizontal stay 59 rigidly connect the lower ends of the leg supports 47, 49 and 51. A top plate receiving metal fitting 61 for attaching the main top plate 2 is fixed at the upper end thereof, and an adjuster 63 is provided at the lower end thereof. A plurality of bolt insertion holes 61 a are drilled at a predetermined pitch P in the top plate receiving metal fitting 61 . The above-described sub-frame 45 and mounting brackets 65 for mounting the sub-top plate 2 protrude from the inward surface side of the vertical stay 53 . The sub-frame 45 is channel-shaped and is open on the non-use end side, as will be described in detail later, and its protruding end side is slidably fitted in the end main frame 25 . A vertical wiring duct 117 is provided adjacent to the front of the leg post 29 behind the intermediate leg 21 and the leg post 49 behind the outer leg 43 .

<Intermittent attachment mechanism 8 of support 1 and frame connection structure>
As shown in FIGS. 3 to 5 and 9 to 17, the support 1 is intermittently attached by attaching the movable end portion 5 to the support body 4 so that the furniture width W can be changed by a constant pitch P. A mechanism 8 is provided, and a stepless attachment mechanism 9 is provided for attaching the sub top plate portion 7 to the movable end portion 5 so that the furniture width W can be changed steplessly. The furniture width change range by the stepless mounting mechanism 9 is set to correspond to one pitch P of the furniture width change by the intermittent mounting mechanism 8 .

3 to 5 and 9 to 17, the intermittent mounting mechanism 8 comprises a main frame 25 (hereinafter simply referred to as main frame 25) at the end of the support body 4 and a subframe at the movable end 5. 45 is provided. That is, the intermittent mounting mechanism 8 is realized by a frame connection structure as described below, and can fix the sub-frame 45 to the main frame 25 at arbitrary intermittent positions.

The frame connection structure associated with mainframe 25 and subframe 45 is as follows. This frame connection structure includes a main frame 25, which is a first frame having a first bolt insertion hole 25a, and a main frame 25 which is combined with the main frame 25 such that the connection position can be changed so as to match the first bolt insertion hole 25a. A subframe 45, which is a second frame having a second bolt insertion hole 45a, and a nut holder 67 disposed inside the main frame 25 and holding a nut 69 at a portion corresponding to the first bolt insertion hole 25a. , and tightening bolts 71 screwed into the nut 69 of the nut holder 67 through the first and second bolt insertion holes 25a, 45a. The nut holder 67 presses the sub-frame 45 against the main frame 25 by the tightening force of the tightening bolt 71 from the retracted position m shown in FIG. It is supported by the main frame 25 so as to be movable up to the tightening position n shown.

Specifically, as shown in FIGS. 2 to 5 and 9 to 17, this frame connection structure allows the sub-frame 45 to be slid inside the main frame 25 in the longitudinal direction, that is, in the width direction of the furniture. and is constructed so that the overall longitudinal dimension can be changed by changing the connection position.

As shown in FIGS. 11 and 13, the main frame 25 has a pair of outer plates 75 and 77, and the sub-frame 45 has a channel shape with one side open to the non-use end side. The nut holder 67 is located inside the sub-frame 45 and is movably connected to one outer plate 75 of the main frame 25, that is, the outer plate on the side opposite to the use end. The main frame 25 has a pair of first bolt insertion holes 25a, and the sub-frame 45 is provided with a plurality of second bolt holes 25a selectively aligned with the first bolt insertion holes 25a as it slides. It has a bolt insertion hole 45a. Then, the nut holder 67 holds the tightening bolt 71 inserted through the first bolt insertion hole 25a and one of the second bolt insertion holes 45a matching the first bolt insertion hole 25a from the outside, that is, from the bottom side. It is constructed so as to be screwed onto the nut 69 that is mounted. In this embodiment, the paired first bolt insertion holes 25a are arranged with a separation distance four times the one pitch P of the second bolt insertion holes 45a. By sliding by one pitch P, the second bolt insertion holes 45a are selectively aligned with the paired first bolt insertion holes 25a. The paired first bolt insertion holes 25a are elongated holes extending in the longitudinal direction of the main frame 25, respectively.

More specifically, as shown in FIGS. 11 and 13, the main frame 25 includes an outer bottom plate 73, a pair of outer plates 75 and 77, and an outer upper plate that closes the upper ends of the outer plates 75 and 77. It is in the shape of a square pipe provided with a plate 79 . The subframe 45 has an open shape on the side facing one of the outer plates 75 , and includes an inner bottom plate 81 along the inner surface of the outer bottom plate 73 and an inner plate 83 along the inner surface of the other outer plate 77 . , and an inner upper plate 85 extending parallel to the inner bottom plate 81 from the upper edge of the inner plate 83 . On the other hand, the nut holder 67 has a holder bottom plate 87 that can come into contact with and separate from the inner bottom plate 81 of the sub-frame 45, and rises from one side edge of this holder bottom plate 87 along the inner surface of one outer plate 75 of the main frame 25. The holder side plate 89 is movably supported by one of the outer plates 75, and the holder bottom plate 87 is provided with the pair of nuts 69 described above. The distance between the two nuts 69 corresponds to the distance between the first bolt insertion holes 25a. The nut holder 67 has a connection projection 91 on the holder side plate 89, and the main frame 25 has a guide hole 93 for movably guiding the connection projection 91 in one of the outer plates 75 thereof. The connection projection 91 is shaft-shaped and guided in the guide hole 93, and has a flange portion 95 at its outer end. The guide hole 93 includes a horizontal guide portion 93a that guides the nut holder 67 horizontally through the connection projection 91, and a vertical guide portion 93b that guides the nut holder 67 through the connection projection 91 so that the nut holder 67 can move vertically. It is a thing. When the nut holder 67 is at the tightening position n described above, as shown in FIGS. In some cases, as shown in FIG. 14, the connecting protrusion 91 is positioned on the upper end side of the vertical guide portion 93b. Functionally, it is sufficient for the vertical guide portion 93b of the guide hole 93 to extend upward from one end of the horizontal guide portion 93a, but in this embodiment, the vertical guide portion 93b extends from one end of the horizontal guide portion 93a. It has a shape extending vertically from the The guide hole 93 having such a vertically symmetrical shape is disposed in the center of the outer plate 75 of the main frame in the vertical direction. This is a contrivance for making the die for drilling the guide hole 93 in the left end main frame 25 and the die for drilling the guide hole 93 in the right end main frame 25 common. Further, the horizontal guide portion 93a is formed in the shape of an elongated hole extending in the horizontal direction. This is a measure for finely adjusting the direction.

Thus, when inserting the sub-frame 45 into the main frame 25, the flange portion 95 of the connection projection 91 is pushed up from the outside of the main frame 25 as shown in FIG. 14(a). Then, as shown in (a) and (b) of the figure, the nut holder 67, which cannot be reached from the outside, is lifted to the standby position m, and the holder bottom plate 87 of this nut holder 67 and the outer bottom plate of the main frame 25 are lifted. 73, a gap S is formed through which the inner bottom plate 81 of the sub-frame 45 can easily enter. After the sub-frame 45 is fitted into the main frame 25, the tightening bolt 71 is threaded from below into the nut 69 of the nut holder 67 through the first bolt insertion hole 25a and the second bolt insertion hole 45a which are aligned with each other. By tightening the tightening bolts 71, the holder bottom plate 87 of the nut holder 67 presses the inner bottom plate 81 of the sub-frame 45 against the inner surface of the outer bottom plate 73 of the main frame 25. are firmly tightened together. In this state, the nut holder 67 is fixed at the tightening position n. The mounting position of the movable end portion 5 to the support body 4 corresponds to the mounting position of the sub-frame 45 to the main frame 25. To change the mounting position, the first This can be done by selecting the second bolt insertion hole 45a that matches the bolt insertion hole 25a. FIG. 15 shows a state in which the main frame 25 and the sub-frame 45 are connected when the furniture width W is maximized, and FIG. 17 shows a state in which the furniture width W is minimized. and are connected. In other words, the state shown in FIG. 17 is a state in which the connecting projection 91 is moved to the right end in the horizontal guide portion 93a of the guide hole 93 of the main frame 25, and is smaller than the state shown in FIG. Subframe 45 can be pushed into mainframe 25 .

<Stepless Mounting Mechanism 9 for Support 1>
The stepless attachment mechanism 9 is for steplessly adjusting the attachment position of the sub-top plate portion 7 with respect to the movable end portion 5 of the support 1 in the width direction of the furniture. 11, it is mainly composed of a mounting bracket 65 for mounting the paired sub top plate portion 7 fixed to the inner surface side of the vertical stay 53 of the movable end portion 5. As shown in FIG. Then, a mounting bolt 97 inserted from below into a bolt insertion hole 65a drilled for mounting the sub-top plate portion 7 is screwed into a nut 99 of the sub-top plate portion 7 and fixed, whereby the sub-top plate of the top plate 2 is fixed. A plate 7 is adapted to be attached to the movable end 5 of the support 1 . A bolt insertion hole 65a formed in the mounting bracket 65 is an elongated hole extending in the width direction of the furniture. The position can be changed steplessly. The range of furniture width change by the stepless mounting mechanism 9 , that is, the dimension of the bolt insertion hole 65 a in the furniture width direction w1 is set to a value corresponding to one pitch P of the intermittent adjustment width of the intermittent mounting mechanism 8 .

<Top plate 2 (main top plate part 6 and sub top plate part 7)>
As shown in FIGS. 1 to 5 and 9 to 11, the top plate 2 which is a furniture functional element includes a main top plate portion 6 which is a main element portion arranged on the support body 4 side of the support 1, A sub-top plate portion 7 as a sub-element portion placed on the movable end portion 5 of the support 1 is provided. That is, in the case of this embodiment, the main element portion of the furniture functional element is the solid main top plate portion 6 forming the main portion of the top plate 2, and the sub-element portion is the end of the main top plate portion 6. It is a hollow sub-top plate portion 7 slidably fitted on the portion.

The main top plate portion 6 is mainly composed of, for example, a solid plate member 101 having a rectangular shape in a plan view. It is screwed to the receiving metal fitting 35 and the other end is screwed to the top plate receiving metal fitting 61 provided on the end leg 43 of the movable end portion 5 . Further, the intermediate portion of the lower surface of the plate member 101 is screwed to the top plate mounting bracket 41 of the main frame 25 . A tray 103 opened upward is provided on the non-use end side of the plate member 101 , and a wiring tray 105 is attached to the lower surface of the plate member 101 . In this embodiment, as shown in FIGS. 1 and 2, three main top plate portions 6 are provided. Both ends of the plate member 101 are screwed to the top plate receiving metal fittings 35 respectively provided in the .

The sub-top plate portion 7 includes a top plate portion 107 that contacts the top surface of the main top plate 2, a front edge portion 109 that is formed on the use end side of the top plate portion 107 and covers the use end side of the main top plate 2, It has an upright portion 111 that contacts the inner surface of the tray 103, a hanging portion 113 that hangs down from the edge of the top plate portion 107, and a bottom plate portion 115 that is rigidly connected to the inner surface of the hanging portion 113 by welding or the like. A nut 99 with which the mounting bolt 97 of the stepless mounting mechanism 9 is screwed is fixed to the bottom plate portion 115 . The sub-top plate portion 7 is integrally formed with an upper plate portion 107, a front edge portion 109, an upright portion 111, and a hanging portion 113 from a thin sheet metal material. Therefore, even in the portion where the sub-top plate portion 7 covers the main top plate portion 6, a small step is formed only by the thickness dimension of the thin sheet metal material. The top plate portion 7 has a substantially continuous form.

<The curtain plate 3 (main curtain plate portion 10 and sub curtain plate portion 11)> (mainly see FIGS. 6 to 8 and FIGS. 18 to 21)
As described above, this furniture, that is, the counter K, includes a support 1 that is stretchable in the width direction of the furniture, and a top plate 2 that is supported by the support 1 and stretchable in the width direction of the furniture. Under the top plate 2, as shown in FIGS. 2 to 11 and 18 to 21, a curtain plate 3 that can be stretched in the width direction of the furniture is arranged.

As described above, the support 1 includes a support main body 4 and a movable end portion 5 for furniture width adjustment, which is connected to the support main body 4 so that the mounting position can be changed. The curtain plate 3 includes a main curtain plate portion 10 provided on the support main body 4 side, and a sub curtain plate portion provided on the movable end portion 5 side while being slidably engaged with the main curtain plate portion 10. 11.

In addition, this piece of furniture is provided with a curtain plate mounting mechanism 12 for fixing the curtain plate 3 to the support 1 while the dimensions of the support 1 and the top plate 2 are adjusted in the width direction of the furniture, i.e., the horizontal direction in FIG. there is

Specifically, as shown in FIGS. 2 to 11 and 18 to 21, the curtain plate 3 includes a hollow main curtain plate portion 10 disposed on the support body 4 side, and the main curtain plate portion 10. It is provided with a hollow body-shaped sub curtain plate portion 11 attached to the movable end portion 5 in a state where the connection end side is slidably fitted to the plate portion 10 . More specifically, as shown in FIGS. 3, 5, 8, and 19 to 21, the main curtain plate section 10 includes a main curtain plate face plate 121 and a main curtain plate face plate 121 and a main curtain plate face plate 121 extending inward from the upper edge of the main curtain plate face plate 121. An upper main edge plate 123 with an extending end bent downward and a lower main edge plate 125 extending inward from the lower edge of the main curtain plate face plate 121 and having an extending end bent upward are sheet metalized. It is integrally formed from a material. As shown in FIGS. 3, 6 to 7, and 19 to 21, the sub-curtain plate portion 11 extends inward from a sub-curtain plate face plate 127 and an upper edge of the sub-curtain plate face plate 127. An upper sub-edge plate 129 whose end bends downward and a lower sub-edge plate 131 which extends inward from the lower edge of the sub curtain plate face plate 127 and whose extending end bends upward are integrally formed of a sheet metal material. , and is slidably fitted inside the main curtain plate portion 10 .

As shown in FIGS. 3, 4, 6 to 8 and 19 to 21, the panel mounting mechanism 12 is accommodated in the main panel section 10 and is movable by being pressed by the sub panel section 11. It comprises a main slider 133 and sub-sliders 135, 137 movably accommodated in the sub-curtain plate portion 11, and the main slider 133 and the sub-sliders 135, 137 are fixed to the movable end portion 5, respectively. It is the one that was made. The main slider 133, as shown in FIGS. A nut 139 for mounting is provided. As shown in FIGS. 3 to 4, 6 to 7 and 19 to 21, the sub sliders 135 and 137 are housed inside the sub curtain plate portion 11 so as to be slidable in the width direction of the furniture. Nuts 141 and 143 for attaching the sub-curtain plate portion 11 are provided. In this embodiment, a first sub slider 135 for attaching the outer end side of the sub curtain plate portion 11 to the movable end portion 5 and the inner end side of the sub curtain plate portion 11 to the movable end portion 5 are provided. A second subslider 137 is provided for attachment. On the other hand, as shown in FIGS. 3 to 8 and 19 to 21, the movable end portion 5 has a main bracket 145 for attaching the connection end side of the main curtain plate portion 10 via the main slider 133, and a sub Sub brackets 147 and 149 for attaching the sub curtain plate portion 11 via sliders 135 and 137 are provided. The main bracket 145, as shown in FIGS. 3 to 5, 8 and 19 to 21, is provided on the inner and rear leg struts 51 of the end leg 43, and is screwed onto the nut 139 of the main slider 133. A bolt insertion hole 145a for inserting a bolt 151 is provided. In this embodiment, a first sub-bracket 147 for attaching the first sub-slider 135 and a second sub-bracket 149 for attaching the second sub-slider 137 are provided. That is, as shown in FIGS. 3 to 5, 8 and 19 to 21, the first sub-bracket 147 is provided on the outer and rear leg struts 49 of the end leg 43, and the second sub-bracket 149 is , are provided on the inner and rear leg struts 51 of the end leg 43, as shown in FIGS. Each of the sub-brackets 147, 149 is provided with bolt insertion holes 147a, 149a for inserting bolts 153, 155 screwed onto the nuts 141, 143 of each of the sub-sliders. The second sub-bracket 149 is integrally connected to the main bracket 145 described above. A first spacer member 161 is arranged between the first sub-slider 135 and the first sub-bracket 147 . A second spacer member 163 is arranged between the second sub-slider 137 and the second sub-bracket 149 .

Further, as described above, the support 1 includes an intermittent attachment mechanism 8 that attaches the movable end portion 5 to the support body 4 so that the furniture width W can be changed by a constant pitch P, and a sub-top plate portion 7. is attached to the movable end 5 so that the width of the furniture can be changed steplessly. After that, by changing the positions of the sub panel 11 and the main slider 133 with respect to the main panel 10, the dimension of the panel 3 in the furniture width direction is adjusted to the furniture width change range by the intermittent attachment mechanism 8. By changing the positions of the sub sliders 135 and 137 with respect to the sub curtain plate portion 11, the mounting position of the movable end portion 5 of the sub curtain plate portion 11 can be changed by the stepless mounting mechanism 9. It is configured so that it can be changed according to the furniture width adjustment range. Also, as described above, the furniture width change range by the stepless mounting mechanism 9 is set to correspond to one pitch P of the furniture width change by the intermittent mounting mechanism 8 .

With such a configuration, the tightening bolt 71 inserted through the first bolt insertion hole 25a of the main frame 25 is attached to the second bolt of the sub-frame 45 that is aligned with the first bolt insertion hole 25a. The main frame 25 and the sub-frame 45 can be fixedly connected by inserting them into the insertion holes 45 a and screwing them onto the nuts 69 of the nut holder 67 to tighten them. The connection position of the sub-frame 45 to the main frame 25 can be intermittently changed by sliding the sub-frame 45 in the width direction of the furniture to change the second bolt insertion hole 45a that matches the first bolt insertion hole 25a.

Therefore, in such a case, the nuts 69 may be provided in the nut holder 67 in a number corresponding to the number of the first bolt insertion holes 25a. There is no need to provide a nut corresponding to each of 45a. Therefore, it is possible to increase the number of intermittent mounting positions without increasing the number of nuts, and the step of providing a large number of nuts to the sub-frame 45 is not required.

In this embodiment, the main frame 25 has a pair of outer plates 75 and 77, and the sub-frame 45 has a shape with one side open. , and is movably connected to one of the outer plates 75 of the main frame 25, the mounting of the nut holder 67 is simple, and the nut 69 can be attached to both frames without complicating the structure. 25, 45 can be held floating.

In particular, as in this embodiment, the main frame 25 is a corner frame having an outer bottom plate 73, a pair of outer plates 75 and 77, and an upper outer plate 79 closing between the upper ends of the outer plates 75 and 77. The sub-frame 45 is made into a pipe shape, and is composed of an inner bottom plate 81 along the inner surface of the outer bottom plate 73, an inner plate 83 along the inner surface of the other outer plate 77, and an inner bottom plate extending from the upper edge of the inner plate 83 to the inner bottom plate. 81, the nut holder 67 can be attached to and separated from the inner bottom plate 81 of the sub-frame 45. A holder side plate 89 standing along the inner surface of one of the outer plates 75 of the main frame 25 from one side edge can be used, and the configuration can be simplified.

Furthermore, if the nut holder 67 is provided with a connection projection 91 on the holder side plate 89 and a guide hole 93 for movably guiding the connection projection 91 is provided in one of the outer plates 75 of the main frame 25, the guide By devising the shape of the hole 93, it is possible to allow the nut holder 67 to adopt various floating modes. In this embodiment, since the guide hole 93 has a vertical guide portion 93b, the outer end of the connecting projection 91 can be operated from the outside of the main frame 25 to temporarily lift the nut holder 67. Therefore, it is possible to prevent the nut holder 67 from becoming an obstacle when inserting the sub-frame 45 into the main frame 25 . Further, since the guide hole 93 has a horizontal guide portion 93a and the first bolt insertion hole 25a is an elongated hole, the positions of the nut holder 67 and the sub-frame 45 with respect to the main frame 25 can be delicately adjusted at each mounting position. can be changed to Therefore, the furniture width dimension W of the support 1 can also be finely adjusted.

In addition, this invention is not limited to embodiment described above.

For example, instead of fitting the second frame into the first frame so as to be slidable in the longitudinal direction, the first frame may be fitted into the second frame so as to be slidable in the longitudinal direction. may be adopted.

Also, any shape may be adopted for the first and second frames. For example, the first frame and the second frame are formed in the shape of channels that open in opposite directions, or the first frame is in the shape of a round pipe and the second frame is in the shape of a C-shaped channel when viewed in cross section. and the like.

In addition, instead of providing a plurality of second bolt insertion holes in the second frame, only one elongated second bolt insertion hole having a length corresponding to the variable range of the width of the furniture is provided. good too.

Furthermore, various types of nut holders may be employed. As an example, a holder bottom plate which can come into contact with and separate from the inner bottom plate of the second frame, is movably supported by the first frame, and is provided with a nut; and a connecting projection extending outward through a guide hole provided in the frame.

Further, the structure of the support is not limited to the above-described embodiment, and various modifications are possible. For example, in the above-described embodiment, the intermediate main frame is attached to both intermediate legs by fitting them in the longitudinal direction. You may enable it to attach from a direction. In that case, instead of the upper frame metal fitting projecting from the intermediate leg, a channel-shaped metal fitting into which the end of the intermediate frame can be fitted, for example, from above may be employed. When the intermediate main frame is fitted to both intermediate legs from the longitudinal direction as in the above-described embodiment, after the support is assembled, the entire support is moved between the building columns to be arranged. If the intermediate main frame can be attached to both intermediate legs from the vertical direction, for example, the structural part on the left side of the left intermediate leg can be abutted against one of the building columns, and the right intermediate leg can be constructed. It is also possible to adopt a method in which the structural part on the right side of the building is constructed by abutting it against the other building pillar, and then an intermediate main frame is erected between the intermediate legs to assemble the whole. In this way, a long counter or the like having three or more intermediate legs can be easily assembled.

In addition, various modifications may be made without departing from the gist of the present invention.

25... First frame (main frame)
25a... First bolt insertion hole 45... Second frame (sub-frame)
45a... Second bolt insertion hole 67... Nut holder 69... Nut 71... Tightening bolt 73... Outer bottom plate 75... One outer plate 77... Other outer plate 79... Outer upper plate 81... Inner bottom plate 83... Inner plate 85... Inner upper plate 87 Holder bottom plate 89 Holder side plate 91 Connection projection 93 Guide hole m Retreat position n Tightening position

Claims (8)

A first frame having a first bolt insertion hole, and a second frame having a second bolt insertion hole which is combined with the first frame so as to be able to change the connection position and can match the first bolt insertion hole. a frame, a nut holder arranged inside the first frame and holding a nut at a portion corresponding to the first bolt insertion hole, and a nut of the nut holder having the first and second bolt insertion holes. a tightening bolt threaded through
The nut holder is positioned between a retracted position that allows relative movement of the second frame with respect to the first frame and a tightening position that presses the second frame against the first frame by a tightening force of the tightening bolt. supported by the first frame so as to be able to float at
A frame connection structure , wherein the direction of free movement of the nut holder is perpendicular to the longitudinal direction of the first frame . The second frame is fitted in the first frame so as to be slidable in the longitudinal direction, and the overall longitudinal dimension can be changed by changing the connection position. 2. The frame connection structure according to claim 1, wherein: The first frame has a pair of outer plates, the second frame has a shape with one side open, and the nut holder is located inside the second frame. 3. The frame connection structure according to claim 1, wherein the frame connection structure is connected to one of the outer plates of the first frame so as to be movable. The first frame has first bolt insertion holes, and the second frame selectively matches the first bolt insertion holes as the second frame slides relative to the first frame . having a bolt insertion hole of
A tightening bolt inserted from the outside through the first bolt insertion hole and any of the second bolt insertion holes matching the first bolt insertion hole is screwed into the nut held by the nut holder. 4. A frame connection structure according to claim 2 or 3, adapted to obtain a The first frame is in the shape of a square pipe and includes an outer bottom plate, a pair of outer plates, and an upper outer plate closing the upper ends of the outer plates,
The second frame has a shape whose side facing one of the outer plates is open, and includes an inner bottom plate along the inner surface of the outer bottom plate, an inner plate along the inner surface of the other outer plate, and 5. The frame connection structure according to claim 4, which is channel-shaped and has an inner upper plate extending parallel to the inner bottom plate from the upper edge of the inner plate. The nut holder includes a holder bottom plate that can be brought into contact with and separated from the inner bottom plate of the second frame, and a holder side plate that rises from one side edge of the holder bottom plate along the inner surface of one outer plate of the first frame. 6. The frame connection structure according to claim 5, wherein the holder side plate is movably supported by the one outer plate, and the nut is provided on the holder bottom plate. 3. The nut holder has connecting projections on the side plates of the holder, and the first frame has guide holes for movably guiding the connecting projections on the one outer plate. 7. The frame connection structure according to 6. 2. The frame connecting structure according to claim 1, wherein said first frame and said second frame are fitted together with said nut holder being movably supported by said first frame.

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