JP2020069266A - Support structure for furniture - Google Patents

Abstract

To provide a support structure for furniture which has a structure having an upper leg rod and a lower leg rod that are vertically spaced apart while achieving an efficient production and down-sizing and simplifying a production facility.SOLUTION: A support pillar of a support structure includes a support pillar body and a hub member 4B connected to a lower end of the support pillar body. On an outer peripheral surface of a shaft of the hum member 4B, a pair of upper leg rod attaching blocks 11 and a pair of lower leg rod attaching blocks 12 which are projected radially outward. A base part of the upper leg rod is fittingly connected to the upper leg rod attaching blocks 11. The lower leg rod attaching blocks 12 are provided at a position below the upper leg rod attaching block 11, and a base part of the upper leg rod is fittingly connected to the lower leg rod attaching block. The upper leg rod attaching block 11 and the lower leg rod attaching block 12 are integrally formed with the shaft of the hub member 4B so as not to be mutually overlapped in a circumferential direction of the shaft of the hub member 4B in a top view of the hub member 4B.SELECTED DRAWING: Figure 14

Description

  The present invention relates to a furniture support structure in which a functional member such as a top plate is supported on an upper portion.

  As a fixture having a plurality of leg rods, a fixture that allows a plurality of fixtures having the same shape to be collected in one place and compactly assembled has been devised (for example, see Patent Document 1).

The furniture support structure described in Patent Document 1 extends in the up-down direction, and has a cylindrical pillar on which a top plate is supported, and a lower portion of the pillar in opposite directions centering on the axis of the pillar. A pair of upper leg rods that extend and a pair of lower leg rods that also extend in opposite directions are provided. Casters that can roll on the floor are installed at the ends of the upper and lower levers in the extending direction. Further, the pair of upper leg rods is installed above the installation position of the lower leg rods on the column.
When the fixtures are gathered in one place when not in use, the upper legs of the other fixtures straddle the lower legs of the other fixture so that the corresponding legs are close to each other. As a result, the support structures for a plurality of fixtures can be compactly assembled in one place.

JP, 2009-106618, A

  In the fixture support structure described in Patent Document 1, the bases of the upper leg rod and the lower leg rod are butted against the outer peripheral surface of the cylindrical column, and in that state, each base is welded and fixed to the outer peripheral surface of the column. There is. For this reason, when fixing the upper and lower leg rods to the outer peripheral surface of the column, the upper leg rod and lower leg rod must be accurately positioned at different height positions of the column, and welding work must be performed in that state. Therefore, the fixing work becomes complicated. Further, it is conceivable to mold the upper leg rod and the lower leg rod integrally with the column, but in this case, the manufacturing equipment becomes large and the structure of the manufacturing equipment becomes complicated.

  Therefore, the present invention is to provide a furniture support structure that has a structure including an upper leg rod and a lower leg rod that are vertically spaced apart from each other, but that can improve manufacturing efficiency and reduce the size and simplification of manufacturing equipment. To do.

The furniture support structure according to the present invention has the following configuration in order to solve the above problems.
That is, the support structure for a furniture according to the present invention is a support structure for a furniture that is placed on a floor surface and supports a functional member at an upper portion, and extends in the vertical direction, and the functional member is provided at an upper portion. A supported pillar, and a pair of upper leg rods that extend in opposite directions in a direction substantially orthogonal to the axis of the pillar on the lower side of the pillar, and the vicinity of ends in the extending direction is grounded to the floor surface; , Below the upper leg rod of the strut, substantially orthogonal to the axial center, and extending in directions opposite to each other in a direction substantially orthogonal to the extending direction of the upper leg rod, near the end of the extending direction. A pair of lower leg rods installed on the floor surface; and the strut includes a strut body on which the functional member is supported, and a hub member coupled to a lower end of the strut body, The base portion of the upper leg rod is connected to the outer peripheral surface of the shaft portion of the hub member in a fitted state. A pair of upper leg rod mounting blocks, and a pair of lower leg rod mounting blocks to which the bases of the lower leg rods are joined in a fitted state at a position lower than the upper leg rod mounting block The upper leg rod mounting block and the lower leg rod mounting block projecting toward each other are formed so as not to overlap each other in the circumferential direction of the shaft portion of the hub member in a top view of the hub member. It is characterized in that it is formed integrally with the shaft portion.

In this support structure, an upper leg rod and a lower leg rod are provided at different heights on the lower side of the column. For this reason, when a plurality of fixtures of the same shape are gathered in one place when not in use, the lower leg rod of the support structure of one fixture straddles the upper leg rod of the other support structure, The leg rods and the upper leg rods can be arranged close to each other. Therefore, when this support structure is adopted, a plurality of fixtures can be compactly aligned.
In addition, in the present support structure, since the supporting column includes the supporting column main body and the hub member on which the upper leg rod mounting block and the lower leg rod mounting block are formed, a long column body having a relatively simple shape is provided. With this, a hub member having a complicated shape can be manufactured in another step. The hub member can be formed by molding. Further, the upper leg rod and the lower leg rod can be easily positioned with respect to the hub member by fitting the upper leg rod mounting block and the lower leg rod mounting block integrally formed on the hub member. .. Therefore, the support structure can be efficiently manufactured.
Further, the present support structure is integrally formed with the shaft portion so that the upper and lower leg rod mounting blocks of the hub member do not overlap each other in the circumferential direction of the shaft portion of the hub member in a top view. Since it is formed, the product can be easily released from the mold only by the relative movement of the upper mold and the lower mold in the vertical direction when molding the hub member. That is, for example, even when a convex portion for molding the lower surface of the upper leg rod mounting block is provided on the lower mold, the convex portion does not interfere with the lower leg rod mounting block at the time of mold release.

Each of the bases of the upper leg rod and the lower leg rod is provided with a strut surrounding wall that covers a substantially half region in the circumferential direction of the outer peripheral surface of the shaft portion of the hub member, and the strut surrounding wall of the upper leg rod is provided. The extending ends of the strut surrounding walls of the upper leg rods forming a pair are provided with facing surfaces facing each other, and the strut surrounding walls of the lower leg rods also include the lower leg rods forming a pair. You may make it the opposing surface which the extended ends of a pillar surrounding wall mutually oppose.
In this case, since the strut surrounding wall provided at the base of each leg rod covers most of the outer peripheral surface of the shaft portion of the hub member, the rigidity of the joint between each leg rod and the hub member is It is enhanced by the surrounding wall, and the bases of the paired bar rods are almost continuous with each other, and the appearance from the outside is also good.

The upper leg rod and the lower leg rod may be formed so as to have a substantially constant width in a top view from a central region in the extending direction to a portion on the base side where the pillar surrounding wall is provided.
In this case, since the pair of upper leg rods and the pair of lower leg rods can be seen almost continuously in a top view, the appearance of the support structure can be improved.

  The support structure of the present invention is characterized in that the supporting column comprises a supporting column main body and a hub member on which an upper leg rod mounting block and a lower leg rod mounting block are formed, the upper leg rod mounting block and the lower leg of the hub member. The rod mounting block is integrally formed with the shaft portion so as not to overlap each other in the circumferential direction of the shaft portion of the hub member in a top view. Therefore, it is possible to manufacture the strut body having a simple shape and the hub member having a complicated shape in separate steps to improve the manufacturing efficiency and downsize the equipment. Furthermore, when molding the hub member, the product can be easily released from the mold by only the relative movement of the upper mold and the lower mold in the vertical direction. Therefore, although the support structure of the present invention has a structure including an upper leg rod and a lower leg rod that are vertically separated from each other, the manufacturing efficiency can be improved and the manufacturing equipment can be downsized and simplified.

It is a perspective view showing a furniture of an embodiment. It is a perspective view showing a leg member of an embodiment. It is sectional drawing which follows the III-III line of FIG. 2 of the one lower leg rod of embodiment. It is sectional drawing which follows the IV-IV line of FIG. 2 of the other lower leg of embodiment. It is sectional drawing which follows the VV line of FIG. 3 of the one lower leg rod of embodiment. It is the top view which removed the one part lower rod member of embodiment. It is a perspective view showing a hub member of an embodiment. It is a top view which shows the hub member of embodiment. It is a IX arrow line view of FIG. 8 of the hub member of embodiment. It is a X arrow line view of FIG. 8 of the hub member of embodiment. FIG. 3 is a perspective view showing a pair of upper leg rods (lower leg rods) of the embodiment. It is a perspective view which shows the alignment state of the furniture of embodiment. It is a perspective view of a hub member of an embodiment, and is a figure which put a dot with different density in a portion molded by an upper mold and a portion molded by a lower mold. It is a figure which shows the image of the shaping | molding die which shape | molds the hub member of embodiment, (A) is the figure seen from the same direction as the hub member shown in FIG. 9, (B) is the same as the hub member shown in FIG. It is the figure seen from the direction.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing a furniture 1 of this embodiment. The furniture 1 of the present embodiment is a table device in which a top plate 3 which is a functional member is supported above a leg member 2 which is a support structure.
The leg member 2 is provided with a column 4 standing upright in the vertical direction, upper leg rods 5A and 5B extending in a radial direction from a lower portion of the column 4, and lower leg rods 6A and 6B, and the upper leg rods 5A and 5B and the lower leg. The ends of the rods 6A and 6B in the extending direction are grounded to the floor surface F. The top plate 3 is attached to the upper ends of the columns 4 via a rotating mechanism 7. The rotation mechanism 7 is configured so that the posture (horizontal posture and upright posture) of the top plate 3 with respect to the support column 4 can be appropriately switched.

FIG. 2 is a perspective view showing a lower portion of the leg member 2.
As shown in the figure, the column 4 of the leg member 2 has a column body 4A extending in the vertical direction and a hub member 4B connected to the lower end of the column body 4A. The rotating mechanism 7 shown in FIG. 1 is attached to the upper end of the column main body 4A. The hub member 4B is assembled with the base portions of the upper leg rods 5A and 5B and the lower leg rods 6A and 6B. The pair of lower leg rods 6A and 6B extend in opposite directions from the lower end of the hub member 4B in a direction substantially orthogonal to the axis of the hub member 4B. Casters 8a, 8b capable of rolling on the floor surface F are attached near the ends in the extending direction of the lower leg rods 6A, 6B. Further, the pair of upper leg rods 5A and 5B extend in opposite directions in a direction substantially orthogonal to the axis of the hub member 4B at a position higher than the extended position of the lower leg rods 6A and 6B of the hub member 4B. There is. The upper leg rods 5A, 5B and the lower leg rods 6A, 6B are arranged so as to be separated by 90 ° around the axis of the hub member 4B. In other words, the lower leg rods 6A, 6B extend in a direction substantially perpendicular to the upper leg rods 5A, 5B at a position lower than the upper leg rods 5A, 5B. Casters 8A are attached near the ends of the upper leg rods 5A and 5B in the extending direction via a pedestal portion 9 protruding downward. The casters 8A are rollable with respect to the floor surface F.

3 is a sectional view of the lower leg rod 6A taken along the line III-III of FIG. 2, and FIG. 4 is a sectional view of the lower leg rod 6B taken along the line IV-IV of FIG.
As shown in FIG. 3, the area (hereinafter, referred to as “first area a1”) near the end of the lower leg rod 6A in the extending direction is set to be movable with respect to the floor surface F. A first braking switching mechanism 14 capable of switching to a braking state, and an operation protrusion 15 (braking operation portion) for performing a braking switching operation on the first braking switching mechanism 14 are provided. Further, as shown in FIG. 4, in the vicinity of the end portion of the other lower leg rod 6B in the extending direction, the area (hereinafter, referred to as “second area a2”) is movable with respect to the floor surface F. A second braking switching mechanism 16 that can switch between a braking state and a braking state is provided.

  The first braking switching mechanism 14 is a caster 8a fixedly installed on the lower surface of the end of one lower leg rod 6A, and a first braking block provided at a position closer to the base of the lower leg rod 6A than the installation position of the caster 8a. 17 are provided. The first braking block 17 is provided on the lower leg rod 6A so as to be able to advance and retreat downward, and the projecting lower end portion contacts the floor surface F to lift the lower leg rod 6A upward to move the first area a1. Braking the floor F. While the first braking block 17 does not contact the floor surface F, the casters 8a contact the floor surface F and make the first area a1 movable with respect to the floor surface F.

  The operation protrusion 15 is installed above the first braking block 17 so as to be pushed down with respect to the first braking block 17. The upper portion of the operation protrusion 15 projects above the lower leg rod 6A through an opening 18 provided in the upper wall of the lower leg rod 6A. The operation projection 15 projects or retracts the first braking block 17 by the user depressing the upper end projecting upward from the lower leg rod 6A with the sole of the foot. An alternate lock device 50 (see FIG. 5) is configured between the operation protrusion 15 and the first braking block 17. The alternate lock device 50 can sequentially switch between locking and unlocking the first braking block 17 in the protruding state by repeatedly depressing the operation protrusion 15.

  The second brake switching mechanism 16 is a caster 8b fixedly installed on the lower surface of the extending end of the other lower leg rod 6B, and a second brake switching mechanism 16 provided at a position closer to the base of the lower leg rod 6B than the installation position of the caster 8b. The braking block 19 is provided. The second braking block 19 is provided on the lower leg rod 6B so as to be able to advance and retreat downward, and the protruding lower end portion contacts the floor surface F to lift the lower leg rod 6B to raise the second area a2. Braking the floor F. While the second braking block 19 is not in contact with the floor surface F, the casters 8b are in contact with the floor surface F and make the second area a2 movable with respect to the floor surface F.

  As shown in FIG. 3, in the lower leg rod 6A, a long leg rod main body portion 6Aa is made of resin, and a metal base plate 20 having a U-shaped cross section is fixed therein. A resin-made support bracket 21 having a plurality of guide function portions described later is integrally fixed to the base plate 20.

FIG. 5 is a sectional view taken along the line VV of FIG. FIG. 6 is a view of the lower leg rod 6A seen from above with the leg rod body 6Aa and the operation projection 15 removed.
As shown in FIGS. 3 and 6, the support bracket 21 is a horizontal guide in which guide walls 21b are erected on both sides of the substantially horizontal base wall 21a in the width direction (direction intersecting with the extending direction of the lower leg rod 6A). It has a function part 22 and a vertical guide function part 23 composed of a cylindrical wall 21c protruding upward from the base wall 21a. Regarding the support bracket 21, the side where the hub member 4B is located in the longitudinal direction of the lower leg rod 6A is referred to as the "base side", and the opposite side is referred to as the "extension end side". Are arranged on the extension end side of the horizontal guide function portion 22 of the support bracket 21. The cylindrical wall 21c forming the vertical guide function portion 23 penetrates in the vertical direction as shown in FIG.

  An intermediate movable body 24 is slidably held by the horizontal guide function portion 22 of the support bracket 21. The intermediate movable body 24 is guided by the base wall 21a and the guide wall 21b of the support bracket 21 and is horizontally movable along the extending direction of the lower leg rod 6A. A support shaft 24a is provided on the intermediate movable body 24 so as to project upward. A movable pulley 25 is rotatably supported on the support shaft 24a. Reference numeral 26 in the drawing is a displacement regulating rod which is held by the support bracket 21 and regulates the lifting of the intermediate movable body 24. In addition, a pair of cam walls 32 are provided so as to be spaced apart from each other in the width direction at a position of the intermediate movable body 24 near the extending end side of the lower leg rod 6A. On the upper surface of each cam wall 32, a cam surface 32a is formed which is inclined upward from the base side of the lower leg rod 6A toward the extension end side.

As shown in FIG. 5, the operation protrusion 15 is formed in a box shape whose lower side is open. A substantially cylindrical boss portion 27 is provided at the center of the lower surface of the upper wall 15a of the operation protrusion 15. Further, a pair of cam walls 28 are provided on both sides in the width direction of the operation projection 15 on the lower surface of the upper wall 15a so as to sandwich the boss portion 27 therebetween. On the lower surface of the cam wall 28, there is formed a cam surface 28a which is inclined downward from the extending end side of the lower leg rod 6A toward the base side. Each cam surface 28a of the operation protrusion 15 is slidably in contact with a corresponding cam surface 32a of the cam wall 32 of the intermediate movable body 24. With this configuration, when the operation protrusion 15 is pushed down, the cam surfaces 28a and 32a slide with each other, whereby the intermediate movable body 24 slides substantially horizontally toward the base side of the lower leg rod 6A. ..
In the present embodiment, the cam wall 28 of the operation projection 15 and the cam wall 32 of the intermediate movable body 24 convert the pushing-down operation of the operation projection 15 into a substantially horizontal movement of the intermediate movable body 24. Is composed of.

  A load transmission shaft 29 that constitutes an upper member of the first braking block 17 is coaxially fixed to the boss portion 27 of the operation protrusion 15. The load transmission shaft 29 is non-rotatably fitted and fixed to the boss portion 27, and the lower end thereof projects below the boss portion 27. At the lower end of the load transmission shaft 29, a head portion 29a having a larger diameter than the other portion on the upper side is integrally formed. The boss portion 27 is slidably inserted in the cylindrical wall 21c (vertical guide function portion 23) of the support bracket 21 in the vertical direction. Eight guide ridges 30 are formed on the outer peripheral surface of the boss portion 27 at equal intervals in the circumferential direction. These guide ridges 30 are formed on the inner peripheral surface of the cylindrical wall 21c (vertical guide function portion 23). It is fitted in the corresponding guide groove 31 formed so as to be vertically slidable. Therefore, the operation protrusion 15 is prevented from rotating around the peripheral region of the tubular portion with respect to the tubular wall 21c (support bracket 21) regardless of the vertical movement position.

The first braking block 17 includes a box-shaped block main body 35 that opens upward, a load transmission shaft 29 supported by the boss portion 27 of the operation protrusion 15, a bottom wall upper surface of the block main body 35, and the load transmission shaft 29. The compression spring 36 (elastic member) interposed between the head portion 29a and the head portion 29a. In the present embodiment, the load transmission shaft 29 constitutes an upper side member of the first braking block 17, and the block body 35 constitutes a lower side member of the first braking block 17. The operation load in the pushing direction input from the operation protrusion 15 to the load transmission shaft 29 is transmitted to the block body 35 via the compression spring 36. Therefore, when the operation protrusion 15 is pushed down and the lower surface of the block body 35 is grounded on the floor surface F, the compression spring 36 is thereafter compressed (accumulated) according to the amount of depression of the operation protrusion 15. ).
The alternate lock device 50 is configured so as to straddle the boss portion 27 of the operation protrusion 15, the cylindrical wall 21c of the support bracket 21, and the load transmission shaft 29 of the first braking block 17. Description of the detailed structure of the alternate lock device 50 is omitted.

  The block body 35 has a pair of side walls (side walls facing each other in the extending direction of the lower leg rod 6A) facing each other, and a guide piece 35a protruding upward. These guide pieces 35a are inserted into a guide hole 21d (see FIG. 6) formed in the base wall 21a of the support bracket 21 and guided by the guide hole 21d so as to be vertically movable. In addition, locking claws 35b protruding laterally are integrally formed at the upper end of each guide piece 35a. Each locking claw 35b is inserted into an opening 15b formed at the lower end of the side wall of the operation protrusion 15. Each locking claw 35b can freely move within the range of the opening 15b, and its relative downward displacement is restricted by contacting the lower edge portion 15c of the opening 15b. Therefore, when the operation protrusion 15 is pushed upward from the state where the block body 35 projects downward, the lower edge portion 15c abuts on the locking claw 35b, so that the block body 35 moves upward together with the operation protrusion 15. Pushed up to.

  In addition, as shown in FIGS. 3 and 6, the movable pulley 25 supported by the intermediate movable body 24 is wound around the intermediate region of the wire 33 (inner wire 33i) that forms a part of the motion transmission mechanism. The wire 33 includes an inner wire 33i and an outer tube 33o that covers the outer side of the inner wire 33i so as to be relatively displaceable. Hereinafter, when simply referred to as the "wire 33", it means the inner wire 33i.

  One end side of the wire 33 is arranged along the lower surfaces of the lower leg rod 6A on one side and the lower leg rod 6B on the other side, and the second braking switching mechanism is arranged on the extension end side of the other lower leg rod 6B. It is connected to 16 lifting link mechanisms 37 (see FIG. 4). The other end of the wire 33 is connected to the base plate 20 via a tension spring 34 that constitutes an elastic restoring mechanism. Since the base plate 20 is integrally fixed to the one lower leg rod 6A, the other end of the wire 33 is connected to the furniture main body via the tension spring 34. When an excessive tension is applied to the wire 33, the tension spring 34 starts elastic deformation in the extension direction to relax the tension of the wire 33 and accumulate the tension energy.

  Further, as shown in FIG. 4, a mechanism housing case 38 is fixedly installed in the second region a2 of the other lower leg rod 6B. In the mechanism housing case 38, the second braking block 19 is housed so as to be able to move up and down, and a lifting link mechanism 37 that converts the pulling operation of the wire 33 into the projecting operation of the second braking block 19 is incorporated.

  In the elevating link mechanism 37, a support pin 40 is slidably supported in a guide hole 39 formed in a side wall of a mechanism housing case 38, and a wire connecting block 41 is integrally coupled to the support pin 40, and a link 42. One end side of is rotatably connected. The guide holes 39 are formed on both side walls of the mechanism housing case 38 in the width direction in the shape of an elongated hole along the extending direction of the lower leg rod 6B. One end of the wire 33 is connected to the wire connecting block 41, and the pulling force of the wire 33 acts on the support pin 40 via the wire connecting block 41. The support pin 40 receives the pulling force of the wire 33 and slides in the guide hole 39 toward the base of the lower leg rod 6B. At this time, since the second braking block 19 is guided around the mechanism housing case 38 so as to be able to move up and down, the second braking block 19 receives a downward pushing force from the link 42 as the support pin 40 is displaced. As a result, the second braking block 19 projects below the lower leg rod 6B.

Further, a return spring 43 is interposed between the wire connection block 41 and the mechanism housing case 38 to bias the support pin 40 toward the initial position direction (the extending end direction of the lower leg rod 6B). Therefore, when the pulling force by the wire 33 is released, the support pin 40 receives the biasing force of the return spring 43 and returns to the initial position, and as a result, the second braking block 19 retracts (raises) to the initial position.
The return spring 43 applies a reaction force that returns the intermediate movable body 24 to the initial position direction when the pulling force is input from the intermediate movable body 24 through the wire 33.

When switching the furniture 1 (leg member 2) from the movable state to the braking state, an operator pushes down the operation protrusion 15 by stepping on the operation protrusion 15. When the operation protrusion 15 is pushed down, the first braking block 17 projects downward and contacts the floor surface F, and the first area a1 of the lower leg rod 6A on one side is brought into a braking state. Further, at this time, the pressing operation of the operation protrusion 15 (operation of the first braking block 17 in the pressing direction) is converted into the horizontal displacement of the intermediate movable body 24 by the sliding of the cam walls 28 and 32 which are the first conversion mechanism. Then, the horizontal displacement of the intermediate movable body 24 is converted into the downward projecting operation of the second braking block 19 via the wire 33 which is the second conversion mechanism and the elevating link mechanism 37. As a result, the second braking block 19 projects downward and contacts the floor surface F, and the second region a2 of the other lower leg rod 6B is brought into a braking state. As a result, the entire leg member 2 is maintained in the braking state with respect to the floor surface F.
When the operation projection 15 is fully depressed and then released, the locking by the alternate lock device 50 functions and the first braking block 17 protruding downward by a predetermined amount is held in the protruding state. .. The braking of the leg member 2 is released by pressing the operating projection 15 again.

FIG. 7 is a perspective view of the hub member 4B of the column 4. Further, FIG. 8 is a plan view of the hub member 4B, and FIGS. 9 and 10 are a view taken in the direction of arrow IX in FIG. 8 and a view taken in the direction of arrow X in FIG.
As shown in these drawings, the hub member 4B includes a substantially columnar hub main body 10 (shaft portion), an upper leg rod mounting block 11 having a substantially rectangular cross-section extending in a radial direction from the hub main body 10, and The lower leg rod mounting block 12 is provided. An upper leg rod attachment block 11 and a lower leg rod attachment block 12 are provided in pairs. The hub body portion 10, the upper leg rod mounting block 11, and the lower leg rod mounting block 12 are integrally formed of, for example, hard resin. The pair of upper leg rod mounting blocks 11 are provided so as to project at opposite positions on the outer circumference of the hub body 10. The pair of lower leg rod mounting blocks 12 is located below the projecting portion of the upper leg rod mounting block 11 so that the upper leg rod mounting block 11 and the hub body 10 are separated by 90 ° in the circumferential direction. The protrusions are provided at opposite positions on the outer circumference of the main body 10. The bases of the upper leg rods 5A and 5B are fitted to the upper leg rod mounting block 11, and in this state, the bases of the upper leg rods 5A and 5B are fastened and fixed by bolts 13. Similarly, the base portions of the lower leg rods 6A and 6B are fitted to the lower leg rod mounting block 12, and in this state, the base portions of the lower leg rods 6A and 6B are fastened and fixed by bolts 13.

  Further, as shown in FIG. 8, the upper leg rod mounting block 11 and the lower leg rod mounting block 12 do not overlap each other in the circumferential direction of the hub body 10 in the top view of the hub member 4B. It is formed integrally with 10. That is, the root portions of the upper leg rod mounting block 11 and the lower leg rod mounting block 12 are formed so as to be separated by a predetermined distance d in the circumferential direction of the hub body 10 when the hub member 4B is viewed from above. ing.

FIG. 11 is a perspective view showing the base portions of the pair of upper leg rods 5A and 5B. Since the base portions of the pair of lower leg rods 6A and 6B have substantially the same shape, the reference numerals of the lower leg rods 6A and 6B are also put in parentheses in FIG.
The bases of the upper leg rods 5A, 5B and the lower leg rods 6A, 6B are provided with a strut surrounding wall 62 that covers an approximately half circumferential region of the outer peripheral surface of the hub body 10. The strut surrounding wall 62 is formed with a semicircular arc surface 62 a facing the outer peripheral surface of the hub body 10. The arcuate surface 62a abuts the outer peripheral surface of the hub body 10 when the base portions of the upper leg rods 5A and 5B and the lower leg rods 6A and 6B are assembled to the hub member 4B. Further, the arc surface 62a extends from the center position of the upper leg rods 5A, 5B and the lower leg rods 6A, 6B in the width direction by the same arc length. An end portion of the pillar surrounding wall 62 along the arc direction of the arc surface 62 a is referred to as an “extended end” of the pillar surrounding wall 62.

At the extending ends on both sides of the pillar surrounding wall 62, flat facing surfaces 63 are formed in which the extending ends of the pair of upper leg rods 5A, 5B or the lower leg rods 6A, 6B face each other. There is. The facing surface 63 is formed by a surface which is substantially perpendicular to the extending direction of the upper leg rods 5A and 5B and the lower leg rods 6A and 6B having the pillar surrounding wall 62 and which stands vertically.
In addition, the facing surfaces 63 of the upper leg rods 5A and 5B forming a pair and the facing surfaces 63 of the lower leg rods 6A and 6B forming a pair abut each other in a state in which each leg rod is fixed to the hub member 4B. You may do it. In this case, when a large load is input from above the support column 4, it is possible to restrict the displacement of the base portion of each leg rod so as to descend downward. Therefore, it is possible to increase the rigidity of the connecting portion between each leg rod and the hub member 4B.
Further, the facing surfaces 63 of the upper leg rods 5A, 5B forming a pair and the facing surfaces 63 of the lower leg rods 6A, 6B forming a pair are mutually predetermined in a state in which each leg rod is fixed to the hub member 4B. You may make it space apart. In this case, even if there is a manufacturing error in the upper leg rods 5A, 5B, the lower leg rods 6A, 6B, the hub member 4B, etc., these can be easily assembled.

  Further, the upper leg rods 5A, 5B and the lower leg rods 6A, 6B are formed to have a substantially constant width in a top view from a central region in the extending direction to a portion of the base side supporting column surrounding wall 62.

Next, a case will be described in which the furniture 1 having the above configuration is collected and aligned at one place.
FIG. 12 is a diagram showing a state in which the top plate 3 is in an upright posture and the leg members 2 of the plurality of furniture 1 are assembled.
As shown in the figure, the lower leg rods 6A, 6B of one fixture 1 are straddled by the upper leg rods 5A, 5B of the other fixture 1 from above, and the lower leg rods 6A, 6B of the one fixture 1 are placed. And the lower leg rods 6A, 6B of the other fixture 1 are parallel, and the upper leg rods 5A, 5B of the one fixture 1 and the upper leg rods 5A, 5B of the other fixture 1 are parallel. The leg members 2 are brought close to each other. Similarly, also in the other furniture 1, the lower leg rods 6A and 6B are brought close to each other so that the upper leg rods 5A and 5B are made parallel to each other. By arranging the furniture 1 in this manner, the plurality of furniture 1 can be compactly integrated in one place.

  In the leg member 2 of the present embodiment, a column 4 that supports the top plate 3 includes a column body 4A that extends vertically and a hub member 4B in which the upper leg rod mounting block 11 and the lower leg rod mounting block 12 are formed. Since it is provided, the long strut body 4A having a relatively simple shape and the hub member 4B having a complicated shape can be manufactured in separate steps. The hub member 4B can be easily formed by molding, as will be described later. Further, the upper leg rods 5A, 5B and the lower leg rods 6A, 6B are fitted and positioned on the upper leg rod mounting block 11 and the lower leg rod mounting block 12 of the hub member 4B, and in that state, they are attached to the hub member 4B. It can be fastened by the bolt 13. Therefore, when the leg member 2 of this embodiment is adopted, the leg member 2 can be efficiently manufactured.

FIG. 13 is a perspective view of the hub member in which, when the hub member 4B is molded, dots of different densities are put in the part molded by the upper mold and the part molded by the lower mold. The thin dots in the figure are portions formed by the upper die, and the dark dots in the figure are portions formed by the lower die. Further, FIG. 14 is a view showing an image when the hub member 4B is molded. The dark dots in FIG. 14 indicate the lower mold 70 of the mold, and the thin dots indicate the upper mold 71 of the mold.
In the leg member 2 of the present embodiment, as described above, with respect to the hub member 4B, when the root portions of the upper leg rod mounting block 11 and the lower leg rod mounting block 12 are viewed from above the hub member 4B, The parts 10 are formed so as to be separated from each other by a predetermined distance d in the circumferential direction. Therefore, the hub member 4B can be easily molded by only the upper mold 71 and the lower mold 70 as shown in FIGS. 14 (A) and (B). That is, since the respective root portions of the upper leg rod mounting block 11 and the lower leg rod mounting block 12 are separated from each other by a predetermined distance d in the circumferential direction, for example, an upward convex portion for molding the lower surface of the upper leg rod end mounting block 11 is formed. Even when 70a is provided on the lower mold 70 side, the convex portion 70a does not interfere with the lower leg rod mounting block 12 of the molded product during mold release. Therefore, it is possible to easily remove the mold without damaging the molded product.
Therefore, in the case of adopting the configuration of the present embodiment, although the structure is provided with the upper leg rods 5A, 5B and the lower leg rods 6A, 6B which are vertically separated from each other, the production efficiency is improved and the production equipment is small and simple. Can be promoted.

  In addition, in the leg member 2 of the present embodiment, the strut surrounding walls 62 provided at the bases of the upper leg rods 5A and 5B and the lower leg rods 6A and 6B are the majority of the outer peripheral surface of the hub main body portion 10 (shaft portion). Since the region of is covered from the outside, the rigidity of the connecting portion of each leg rod and the hub member 4B is enhanced by the strut surrounding wall, the strut surrounding wall 62, and the bases of the pair of leg rods are substantially continuous with each other. It also looks good.

  In addition, in the case of the leg member 2 of the present embodiment, the upper leg rods 5A, 5B and the lower leg rods 6A, 6B are substantially in a top view from a central region in the extending direction to a portion where the column surrounding wall 62 of the base is provided. It has a constant width. Therefore, each pair of the upper leg rods 5A, 5B and the lower leg rods 6A, 6B can be seen almost continuously in a top view, so that the leg member 2 looks good.

  The present invention is not limited to the above embodiment, and various design changes can be made without departing from the scope of the invention. For example, the functional component supported by the support structure is not limited to the top plate of the table device, and may have another structure such as a seat of a chair or a shelf.

1 furniture 2 leg members (support structure)
3 Top plate (functional member)
4 prop 4A prop body 4B hub member 5A, 5B upper leg rod 6A, 6B lower leg rod 10 hub body part (shaft part)
11 Upper leg rod mounting block 12 Lower leg rod mounting block 62 Strut surrounding wall 63 Opposing surface

Claims (3)

A support structure for a furniture, which is placed on a floor and supports a functional member at an upper portion,
A column that extends along the up-down direction and on which the functional member is supported,
On the lower side of the support column, a pair of upper leg rods that extend in mutually opposite directions in a direction substantially orthogonal to the axis of the support column, and the ends in the extending direction are grounded to the floor surface.
Below the upper leg rod of the strut, they extend substantially orthogonal to the axis and in opposite directions in a direction substantially perpendicular to the extending direction of the upper leg rod, and the vicinity of the end in the extending direction is the floor. A pair of lower leg rods installed on the surface,
The columns are
A pillar body on which the functional member is supported,
A hub member coupled to the lower end of the strut body,
On the outer peripheral surface of the shaft portion of the hub member,
A pair of upper leg rod mounting blocks to which the base portion of the upper leg rod is connected in a fitted state;
At a position lower than the upper leg rod attachment block, a pair of lower leg rod attachment blocks to which the bases of the lower leg rods are joined in a fitted state are provided to project radially outward.
The upper leg rod mounting block and the lower leg rod mounting block are integrally formed with the shaft portion of the hub member so as not to overlap each other in the circumferential direction of the shaft portion of the hub member when viewed from above the hub member. A support structure for furniture, which is characterized in that Each of the bases of the upper leg rod and the lower leg rod is provided with a strut surrounding wall that covers a substantially half region in the circumferential direction of the outer peripheral surface of the shaft portion of the hub member,
The strut-surrounding wall of the upper leg rod is provided with facing surfaces where the extending ends of the strut-surrounding wall of the upper leg rod forming a pair face each other.
The strut-surrounding wall of the lower leg rod is also provided with facing surfaces where the extending ends of the strut-surrounding wall of the lower leg rod that make a pair face each other. Furniture support structure.   The upper leg rod and the lower leg rod are formed to have a substantially constant width in a top view from a central region in the extending direction to a portion where the pillar surrounding wall on the base side is present. Fixture support structure.

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