JP4787973B2 - Furniture with a top plate - Google Patents

Description

  The present invention relates to furniture with a top board provided with a top board that can be turned horizontally.

Conventionally, various furniture with a top plate including a support and a top plate that can be swiveled horizontally with respect to the support is known. As an example, a flat plate-like support provided on the wall surface of the counter and a top plate supported by the support so as to be horizontally rotatable, a plurality of screw holes are formed on the lower surface of the top plate, The top plate pivoting movement is regulated by screwing the provided screw into the selected one screw hole, and the top plate pivoting movement is enabled by turning the screw to release the screwing state. There is an embodiment in which the top plate can be fixed at the turning angle by screwing the screw into a screw hole different from the screw hole after setting the turning angle (see, for example, Patent Document 1).
Registered Utility Model No. 3044255 (see FIG. 1)

  However, the aspect shown in the above-mentioned patent document has a problem that the selectable relative angular posture of the top plate with respect to the wall surface is limited depending on the position of the screw hole provided on the lower surface of the top plate. In particular, in the aspect shown in the patent document, the posture that the top plate can take is a posture in which the longitudinal direction of the top plate is substantially orthogonal to the surface direction of the wall surface, and the longitudinal direction of the top plate is substantially parallel to the surface direction of the wall surface. The above-mentioned problem is remarkable.

  Therefore, a turning mechanism having a turntable using a thrust bearing and a turntable support that can hold the turntable between the lower surface of the top plate is provided on the lower surface of the top plate, and the relative angle of the top plate to the wall surface An aspect in which the posture can be freely set is also considered. And it is usual to provide the turning stopper mechanism which can be switched between the state which can turn the top plate horizontally, and the state which controlled horizontal turning. As the turning stopper mechanism, a braking body that can move toward and away from the turntable is used, and a mode in which braking is applied to the rotation of the turntable by contacting or pressing the brake body against the turntable. Can be mentioned.

  However, in such a mode, the relative distance between the bottom surface of the top plate and the top surface of the support body does not change before and after the braking body is moved toward and away from the turntable. The support state of the support that supports the substrate does not change. Therefore, in a state where horizontal turning is restricted, it is necessary to further provide a dedicated mechanism in addition to the turning stopper mechanism in order to ensure the support state of the top board that can receive the load applied to the top board by the support body. .

  Thus, the conventional furniture with a top plate cannot improve the support state of the top plate in association with the operation of the turning stopper mechanism, and is a mechanism that brakes the rotation of the rotating body. In addition, a mechanism for ensuring a good support state of the top plate is required, which causes not only an increase in the number of parts and a complicated structure, but also inferior workability.

  The present invention has been made paying attention to such a problem, and the main purpose is to use one mechanism and to control the horizontal turning of the top plate and the good support state of the top plate by the operation of the mechanism. It is to provide furniture with a top plate that can improve the performance.

  That is, the furniture with a top plate of the present invention comprises a support and a top plate supported by the support and capable of horizontally turning with respect to the support, wherein the support is the top plate. In any turning angle that can be taken, a priority support portion that comes into contact with the lower surface of the top plate preferentially over other parts and a target object portion that is provided integrally or integrally on the lower surface side of the top plate By pulling downward in the state, the horizontal turning of the top plate is restricted, and the turning restricted state in which the lower surface of the top plate is in contact with or in pressure contact with the priority support portion, and the swaging state is released. It is characterized in that it is provided with a pinching mechanism that can be switched between a turning allowable state that allows horizontal turning of the top plate.

  If this is the case, by switching the swivel mechanism from the swivel permitted state to the swivel restricted state, braking performance against swiveling of the top plate is effectively exhibited, and the swivel mechanism is integrated with the lower surface side of the top plate or The top plate is pulled down together with the insertion target portion by pulling down the integrated insertion target portion downward, and the top plate is supported by contacting or pressing the lower surface of the top plate with the priority support portion. The body and the body can be integrated, and it is possible to realize a good support state in which the load applied to the top plate via the priority support portion can be received by the support body. In addition, since the priority support part supports the top plate in contact with the lower surface of the top plate at any turning angle, the support state of the top plate does not deteriorate due to the turning angle. It will be excellent.

  In this way, by switching the swaging mechanism from the turning permission state to the turning restriction state, it is possible to achieve both a brake against the turning of the top plate and an improvement in the support state of the top plate.

  In particular, the scavenging mechanism includes a retractable body that can be moved between a scoopable position where the scooping target portion can be swallowed and a scissor release position that releases the swallowed state, If the retractable body positioned at the retractable position is positioned in the support area or in the vicinity of the support area of the priority support section of the support body, the retractable body pulls the target object section downward. Along with this, at least the region of the top plate in which the penetration target portion is provided or the vicinity of the region in which the penetration target portion is provided can be reliably brought into contact with and supported by the priority support portion.

  Moreover, if the said entrapment object part and the said retractable body are formed from the raw material with high rigidity, a deformation | transformation of these entrapment object part and a retractable body will be prevented, and a favorable entrapment state will be maintained over a long period of time. Can be maintained.

  In order to realize a stable support state of the top plate at any turning angle, the support body has a plurality of priority support portions that can support the top plate in a point, and at any turning angle that the top plate can take. Also, it is preferable that the top plate is supported at a plurality of points.

  In addition, the top plate is attached to the support body through a rotation permission mechanism that allows the top plate to rotate in a direction in which the top plate floats with respect to the support body. If the pinching mechanism is one that allows the lifting operation of the top plate in the swivel-permitted state and restricts the lifting operation of the top plate in the swiveling restricted state, Also, it functions as a top plate lift regulation mechanism that regulates the lifting operation of the top plate, so that the mechanism can be shared and the structure can be simplified. In this case, the scavenging mechanism includes a retractable body that can be swung between a retractable position where the target object can be inserted and a retracting position where the jamming state is released. If the retractable body moves up and down in the height direction, it can move between the retractable position and the retractable position as compared with the aspect in which the retractable body moves upward and downward. It is possible to prevent the interference with the insertion symmetry part.

  Further, if the rotation allowance mechanism is positioned at a position out of the support area of the top plate by the priority support portion, the lifting operation is performed when the top plate is lifted with the swivel mechanism in a swing-permitted state. Thus, the brake by the priority support portion is not applied and the top plate can be lifted smoothly.

  As a preferred embodiment of the swallowing target portion, there is a substantially annular shape having a center angle that is the same as or slightly larger than the turning angle at which the top plate can be turned horizontally and that is centered on the turning axis of the top plate. It is done. In this case, the filling target portion includes an upright portion that is substantially perpendicular to the surface direction of the top plate, and a horizontal portion that extends in the horizontal direction from the lower edge of the upright portion, If the horizontal portion is gripped by the gripping mechanism, the portion gripped by the gripping mechanism is directed inward from the lower edge of the standing portion while simplifying the shape of the gripping target portion. Therefore, the grip portion is invisible or difficult to visually recognize from the outside, and does not give a complicated impression to the user.

  As described above, according to the present invention, the horizontal turning restriction of the top plate and the improvement of the support state of the top plate can be realized by the operation of the swaging mechanism.

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

  The desk 1 according to this embodiment includes a base 2 extending in the horizontal direction, a base support 3 that supports the base 2, a support 4 that is slidably supported along the base 2, and a support 4. A top plate 5 that supports one end, and a leg 6 that supports the other end of the top plate 5 and contacts the floor surface. FIG. 1 shows an office configuration system formed by connecting two such desks 1, and supports a top board 5 X different from the top board 5 on the base 2 of each desk 1. I am letting. This top plate 5X is a cantilever type supported only by another support 4X different from the support 4 in the present invention, and cannot slide with respect to the base 2.

  As shown in FIGS. 1, 4 and 5, the base 2 has a substantially quadrangular prism shape extending substantially linearly. Rail grooves 21 and 22 functioning as top plate guide portions for guiding the movement of the support 4 are provided in a pair of upstanding surface portions 2A facing each other along the longitudinal direction of the base 2. In the present embodiment, a pair of rail grooves 21 and 22 extending along the longitudinal direction of the base 2 are formed on each of the standing surface portions 2A so as to be spaced apart from each other by a predetermined pitch in the height direction and parallel to each other. In the following description, the rail groove formed on the relatively upper side is referred to as “upper rail groove 21”, and the rail groove formed on the lower side is referred to as “lower rail groove 22”. The upper rail groove 21 and the lower rail groove 22 have substantially the same shape, and the height dimension of the internal space (inner air height dimension) is set larger than the height dimension of the opening (opening height dimension). Is. In the following description, among the standing walls facing each other in each rail groove 21, 22, the opening side standing wall is referred to as "opening side standing wall" ("opening side standing wall 21a of upper rail groove 21", "The opening side standing wall 22a of the lower rail groove 22"), and the rear side standing wall is "the rear side standing wall" ("the rear side standing wall 21b of the upper side rail groove 21", " The rear side standing wall 22b "). In addition, each opening side standing wall 21a, 22a is extended toward the downward direction from the upper edge part of each rail groove | channel 21,22.

  The upper surface 2B of the base 2 is provided with a rail groove that functions as an optional member guide for moving and guiding an optional member (not shown). In the present embodiment, a plurality of rail grooves 23 (five in the illustrated example) are formed on the upper surface portion 2B so as to be spaced apart from each other by a predetermined pitch in the short direction of the base 2 and to extend parallel to each other. The relative position of the option member relative to the base 2 can be changed by sliding the option member (not shown) along the option member guide portion. Optional members include desktop panels and task lights.

  Each of the rail grooves 21, 22, 23 is formed from one end of the base 2 to the other end. In addition, end caps 2C are detachably attached to both ends of the base 2 (see FIG. 1, while FIGS. 4 and 5 and FIGS. Shows base 2).

  As shown in FIG. 1, the base support 3 supports both ends of the base 2. The base support 3 has, for example, a prism shape or a square pipe shape having a depth dimension substantially the same as the short dimension of the base 2, and a plurality of desks 1 are arranged so that each base 2 is continuous along the longitudinal direction. In the office configuration system that is continuously provided, the first auxiliary base support 31 is integrated with the base support 3 positioned at both ends as viewed from the entire office configuration system by a suitable means among the plurality of base supports 3. As a result, the second auxiliary base support 32 is integrally assembled to the other base support 3 by an appropriate means to realize good self-supporting and stability of the entire office configuration system. 4 and 5 and FIGS. 9 and 10 described later, the auxiliary base supports 31 and 32 are omitted.

  As shown in FIGS. 3 to 6 and the like, the support 4 includes a support body 41 that supports the top plate 5 and a slide device 42 that is slidable along the rail grooves 21 and 22. is there.

  The support body 41 supports a predetermined region on one end side of the top plate 5 from below. The support body 41 according to the present embodiment includes a frame body 411 and a priority support portion 412 that protrudes upward from the upper surface portion of the frame body 411 and contacts the lower surface of the top plate 5 with priority over the frame body 411. It is a thing.

  The frame body 411 is a pair of opposed frames 411a that are substantially orthogonal to the longitudinal direction of the base 2 and are opposed to each other when supported by the base 2, and a single distal frame 411b that is positioned on the distal end side of the opposed frame 411a. The pair of connection frames 411c that connect the end portions of the opposing frames 411a and the end portions of the end frame 411b are integrally rigidly connected by welding or the like. The upper surface portions of the frames 411a, 411b, and 411c are substantially flush. A reinforcing frame 411d is integrally rigidly connected between the inner surface portions at the base end portion of the opposing frame 411a. The upper surface portion of the reinforcing frame 411d is set to be lower than the upper surface portions of the other frames 411a, 411b, and 411c. Each of the frames 411a, 411b, 411c, and 411d has a rectangular tube shape.

  In the present embodiment, the priority support portion 412 is configured as a support pin that protrudes upward from the upper surface portion of the frame body 411 as the priority support portion 412. In the present embodiment, as will be described later, the top plate 5 can be horizontally swiveled with respect to the support body 4, and the top plate 5 is at least placed at any angle relative to the support body 4. The attachment positions of the plurality of priority support portions 412 are set so that a plurality of points can be supported. Specifically, a total of four priority support portions 412 are provided in the vicinity of the distal end portion and the proximal end portion (more specifically, in the vicinity of the joint portion of the reinforcing frame 411d) of each of the opposed frames 411a. Each priority support portion 412 includes a nut 412a fixed to the upper surface portion of the frame body 411, and a pin body 412b that can be screwed into the nut 412a (see FIG. 5).

  Details of the slide device 42 will be described later.

  As shown in FIGS. 2 and 8, the top plate 5 connected to the support body 4 via the hinge mechanism H includes a movable top plate 51 that can be swiveled horizontally with respect to the support body 4, and a movable top plate. A pivot mechanism 52 that supports the plate 51 so as to be horizontally pivotable and is connected to the support body 4 via a hinge mechanism H is provided. In the description of the top plate 5 below, the support 4 side in a state where it is supported by the support 4 is the front, and the opposite side is the rear.

  The movable top plate 51 includes a movable top plate main body 511 and a top plate receiving portion 512 that supports the movable top plate main body 511.

  The movable top plate 51 has, for example, a substantially gourd shape in plan view (an elliptical shape with a central portion), and a relatively large size is applied in the present embodiment. Further, the maximum longitudinal dimension of the movable top plate 51 is set to be substantially the same as or slightly smaller than the longitudinal dimension of the base 2.

  The top plate receiving portion 512 includes a top plate receiving portion main body 5121 that supports the lower surface portion of the movable top plate main body 511 (the lower surface portion in the first half region of the movable top plate main body 511 in the illustrated example), and the top plate receiving portion main body 5121. And a turning stopper rail 5122 provided so as to protrude downward. The turning stopper rail 5122 functions as the “pinch target portion” of the present invention, and the detailed shape and the like will be described later. The top plate receiving portion main body 5121 and the turning stopper rail 5122 are integrally attached to the lower surface side of the movable top plate main body 511 by screwing or the like.

  The turning mechanism 52 includes a turntable 521 and a turntable receiver 522 that supports the turntable 521.

  The turntable 521 uses, for example, a thrust bearing. The radius of the turntable 521 is set smaller than the radius of the turn stopper rail 5122 so that the turntable 521 and the turn stopper rail 5122 do not interfere with each other. Further, the height dimension of the turntable 521 is set smaller than the height dimension of the turning stopper rail 5122.

  As shown in FIGS. 2 and 8, the turntable receiver 522 includes a turntable receiving body 5221 that supports the entire lower surface portion of the turntable 521, and a hinge shaft support 5222 provided on the lower surface side of the turntable receiving body 5221. It is equipped with. In this embodiment, the turntable receiving body 5221 and the hinge shaft support 5222 are integrally assembled by a suitable means such as a plurality of screws. The hinge shaft support 5222 has a horizontal piece 5222a and a pair of hanging pieces 5222b that hang downward from both side edges of the horizontal piece 5222a. A support hole 5222c is formed. The pair of drooping pieces 5222b are positioned on the rear side of the rotary base 522. In addition, a turning stopper mechanism mounting hole 5223 for forming a turning stopper mechanism 4K (see FIG. 4) is formed in the center of the turntable receiver 522. The opening shape of the turning stopper mechanism mounting hole 5223 has a rectangular shape. When the turning stopper mechanism 4K is attached to the turning stopper mechanism mounting hole 5223, the turning stopper mechanism 4K rotates within the turning stopper mechanism attachment hole 5223. It is set not to move.

  As shown in FIG. 8, the hinge mechanism H as the rotation permission mechanism of the present invention for connecting the top plate 5 and the support body 4 as described above includes the hinge shaft support body 5222 of the rotary base 522 and the support body 4. The frame body 411 includes a hinge bearing body 4111 and a hinge shaft H1.

  As shown in FIGS. 3 and 8, the hinge bearing body 4111 is provided on the inner surface of the tip frame 411 b of the frame body 411. In the present embodiment, the hinge bearing body 4111 includes an upright piece 4111a that contacts the inward surface of the front end frame 411b, a pair of opposed pieces 4111b that extend forward from both side end portions of the upright piece 4111a, and face each other. It is assumed that a horizontal piece 4111c extending forward from the lower end is provided, and a hinge shaft insertion hole 4111d into which the hinge shaft H1 can be inserted is formed in each opposing piece 4111b. In the present embodiment, a long hole extending in the height direction is applied as each hinge shaft insertion hole 4111d. In addition, the upper end portion of each facing piece 4111b is set to be lower than the upper surface portion of the frame body 411.

  The hinge shaft support hole 5222c formed in the hanging piece 5222b of the hinge shaft support 5222 and the hinge shaft insertion hole 4111d of each opposing piece 4111b are communicated with each other, and the hinge shaft is connected to each hole 5222c, 4111d. By inserting H1, the top plate 5 and the support 4 are connected via the hinge mechanism H. In this connected state, the hinge mechanism H is positioned at a position deviated from the support area by the priority support portion 412. That is, in this embodiment, the hinge mechanism H is set so as to be positioned on the rear side (on the side opposite to the base 2) with respect to the support region by the priority support portion 412 (see FIGS. 3 and 8; FIG. 8). A pattern is attached to the priority support portion 412). The hinge shaft H1 is prevented from coming off by a large-diameter head, a fastener such as an E-ring, or caulking.

  The leg body 6 that supports the other end portion of the top plate 5 includes a leg main body 61 and a moving body 62 (a caster in the illustrated example) provided at the lower end of the leg main body 61.

  Next, the slide device 42 of the support 4 will be described.

  As shown in FIGS. 3 to 7, the slide device 42 includes a slider body 421, a pair of switching units 422, an interlocking mechanism 423 that operates these switching units 422 in conjunction with each other, and an operation for performing a predetermined operation. Part 424.

  The slider main body 421 is disposed at a position where a predetermined gap can be formed between the main body portion 4211 extending along the longitudinal direction of the base 2 and the main body portion 4211 and is substantially parallel to the main body portion 4211. (Refer to FIG. 6 and FIG. 7).

  The main body portion 4211 is directed to the front from the standing piece 4211a facing the standing surface 2A of the base 2, the pair of side pieces 4211b extending forward from both ends of the standing piece 4211a, and the upper and lower edges of the standing piece 4211a. And an upper piece 4211c and a lower piece 4211d. In the present embodiment, the upright pieces 4211a, the side pieces 4211b, the upper pieces 4211c, and the lower pieces 4211d are formed by bending a single steel plate. Further, a reinforcing piece 4211e for preventing deformation of the main body 4211 is provided between the upper piece 4211c and the lower piece 4211d at both ends of the main body 4211 (see FIGS. 3 and 5).

  In addition, a pair of first connection stays 43 extending in a direction substantially orthogonal to the longitudinal direction of the main body part 4211 are integrally attached to portions near both ends of the main body part 4211 by welding or the like, and these first connection stays 43 are attached. A reinforcing body 4212 is provided between the inward surfaces. A second connection stay 44 is integrally attached by welding or the like between the upper surface of the rear end portion of the first connection stay 43 and the lower surface of the front end portion of the opposite frame 411a of the frame body 411 (see FIG. 3 and FIG. 3). (See FIG. 5 etc.)

  The reinforcing body 4212 includes an upright piece 4212a facing the upright piece 4211a of the main body portion 4211, and an upper piece 4212b and a lower piece 4212c extending from the upper and lower edges of the upright piece 4212a toward the frame body 411 side (on the side opposite to the base 2). The cross sectional view is substantially U-shaped. Both ends of the reinforcing body 4212 are integrally attached to the inward surface of the first connection stay 43 by welding or the like (see FIGS. 6 and 7).

  As shown in FIGS. 3 to 7, each switching unit 422 includes an upper abutment body 4 </ b> A that can abut against the opening side standing wall 21 a of the upper rail groove 21, and a rear side standing wall 22 b of the lower rail groove 22. 4B, the lower rolling body 4C that can contact the opening side standing wall 21a of the upper rail groove 21, and the lower side that can contact the rear side standing wall 22b of the lower rail groove 22. The side rolling element 4 </ b> D and a switching mechanism 4 </ b> E that can be switched between a movement restriction state that restricts the movement of the slide device 42 and a movement permission state that permits the movement of the slide device 42 are provided.

  The upper contact body 4A is positioned at a position closer to the opening side standing wall 21a side of the upper rail groove 21 than the upper rolling body 4C in the movement restricted state. In the present embodiment, as the upper contact body 4A, an upper projecting piece that takes the upper piece 4211c of the main body portion 4211 to the base 2 side (forward) and projects upward is applied. That is, the upper contact body 4A is integrally formed with the main body portion 4211 constituting the slider main body 421, and has excellent rigidity made of a steel plate.

  The lower contact body 4B is positioned at a position closer to the rear side standing wall 22b side of the lower rail groove 22 than the lower rolling body 4D in the movement restricted state. In the present embodiment, a block-shaped member formed from a highly rigid material is used as the lower contact member 4B. The lower abutting body 4B is attached to the distal end portion of an advancing / retreating member 4F that can move back and forth with respect to the main body portion 4211 of the slider main body 421 (see FIGS. 5 and 7). In the present embodiment, a bolt capable of moving back and forth by a screw feed action is applied as the advance / retreat member 4F. The advancing / retracting member 4F can be screwed into a nut 4211g that is non-rotatably held by a nut holding piece 4211f provided continuously to the lower piece 4211d of the main body portion 4211, and is in downward contact with the tip portion. It has the collar part 4Fa which can press the back surface part of the body 4B. The lower abutting body 4B is provided with guide members 4Ba extending rearward from the back surface portion, and the guide members 4Ba are inserted into guide holes (not shown) formed in the nut 4211g, so that the advancing / retreating members are provided. The advancing / retreating movement of the lower contact body 4B accompanying the advancing / retreating movement of 4F can be performed accurately and smoothly. In the present embodiment, as the guide member 4Ba, a pair of pin-shaped members provided in a position parallel to the advance / retreat member 4F and sandwiching the advance / retreat member 4F are applied.

  The upper rolling element 4C is positioned at a position farther from the opening side standing wall 21a of the upper rail groove 21 than the upper rolling element 4C in the movement restricted state. In the present embodiment, a pair of rollers capable of rotating around the vertical axis is applied as the upper rolling element 4C. The pair of upper rolling elements 4C is supported by a common upper roller support 4Ca.

  The lower side rolling element 4D is positioned at a position farther from the rear side standing wall 22b of the lower side rail groove 22 than the lower side rolling element 4D in the movement restricted state. In the present embodiment, a pair of rollers capable of rotating around the vertical axis is applied as the lower contact body 4B. The pair of lower rolling elements 4D is supported by a common lower roller support 4Da.

  The switching mechanism 4E includes a movement restriction state in which the contact bodies 4A and 4B are brought into contact with the standing walls 21a and 22b of the rail grooves 21 and 22 in preference to the rolling bodies 4C and 4D, and the contact bodies 4A. By moving the rolling elements 4C and 4D relative to 4B, the contact state between the contact bodies 4A and 4B and the standing walls 21a and 22b of the rail grooves 21 and 22 is released, and The movable bodies 4C and 4D can be switched between a movement allowable state in which the moving bodies 4C and 4D are brought into contact with the standing walls 21a and 22b of the rail grooves 21 and 22, respectively.

  In the present embodiment, the slide device 42 is provided with a synchronization mechanism 4G that synchronizes the movement of the upper rolling element 4C and the movement of the lower rolling element 4D.

  As shown in FIGS. 6 and 7, the synchronization mechanism 4G includes an upper link 4G1 provided with an upper rolling element 4C at the tip, a lower link 4G2 provided with a lower rolling element 4D at the tip, and these A vertical shaft 4G3 that is a common rotation axis of the upper side link 4G1 and the lower side link 4G2 is provided, and the upper side link 4G1 and the lower side link 4G2 are centered on the vertical axis 4G3 based on the operation force applied to the operation unit 424. The movement of the upper rolling element 4C and the movement of the lower rolling element 4D are synchronized with each other by horizontally turning.

  The upper side link 4G1 is provided with the upper side roller support 4Ca that supports the upper side rolling element 4C at the distal end portion 4G1a. The upper side link 4G1 forms a relative angle at which the distal end portion 4G1a and the proximal end portion 4G1b can be substantially orthogonal to each other, and the distal end portion 4G1a and the proximal end portion 4G1b are connected by a long connecting portion 4G1c (see FIG. 6). An inwardly bulging portion 4G1d that bulges inward is provided in the vicinity of the tip portion 4G1a of the upper side link 4G1, and a vertical shaft insertion hole (not shown) into which the vertical shaft 4G3 can be inserted into the inwardly bulging portion 4G1d. Is forming. Moreover, the long hole 4G1e is formed in the base end part 4G1b of the upper side link 4G1. The region in the vicinity of the front end 4G1a of the upper link 4G1 can be placed on the upper piece 4211c of the main body 4211 of the slider main body 421.

  The lower side link 4G2 is configured such that the lower side roller support body 4Da that supports the lower side rolling element 4D is provided at the distal end portion 4G2a via the adjustment link 4G21. The lower link 4G2 has a relative angle at which the distal end portion 4G2a and the proximal end portion 4G2b can be substantially orthogonal to each other, and the distal end portion 4G2a and the proximal end portion 4G2b are connected by a long connection portion 4G2c (FIG. 7). reference). When the longitudinal dimension of the connection part 4G2c is set smaller than the connection part 4G1c of the upper side link 4G1, and the lower side link 4G2 and the upper side link 4G1 are overlapped, the front end part 4G2a of the lower side link 4G2 is the upper side in plan view. The link 4G1 is set so as to be positioned on the inward side of the distal end portion 4G1a. An outward bulging portion 4G2d that bulges outward is provided in a region in the vicinity of the tip portion 4G2a of the lower side link 4G2, and the outward bulging portion 4G2d communicates with an insertion hole for a vertical shaft formed in the upper side link 4G1. A shaft hole for a vertical shaft to be obtained is formed. Further, a long hole 4G2e is formed in the base end portion 4G2b of the lower link 4G2. A region in the vicinity of the front end portion 4G2a of the lower side link 4G2 is positioned on the lower surface side of the lower piece 4211d of the main body portion 4211.

  In the present embodiment, the reinforcing link 4G4 is interposed between the upper link 4G1 and the lower link 4G2. The reinforcing link 4G4 has a plate shape and is interposed between the upper link 4G1 and the lower link 4G2 in a standing posture. More specifically, the reinforcing link 4G4 is interposed between the connecting portions 4G1c and 4E21a of the upper side link 4G1 and the lower side link 4G2 (see FIGS. 6 and 7). The links 4G1, 4G2 and the reinforcing links 4G4 are assembled by engaging the protrusions 4G41 of the reinforcing links 4G4 with the mounting holes 4G1f, 4G2f provided in the connecting portions 4G1c, 4G2c of the links 4G1, 4G2. be able to.

  The vertical shaft 4G3 can be continuously inserted into each vertical shaft shaft hole formed in the upper link 4G1 and the lower link 4G2. In the present embodiment, the upper piece 4211c and the lower piece 4211d of the main body portion 4211 are also formed with communication holes (not shown) communicating with the vertical shaft shaft holes, and the vertical shaft 4G3 is also connected to these communication holes. Is inserted. Note that the vertical shaft 4G3 is prevented from coming off by a large-diameter head, a fastener such as an E-ring, or caulking.

  Then, as shown in FIGS. 6 and 7, one region (specifically, on the outer side) is bounded by a virtual straight line L that passes through the center of the vertical axis 4G3 and is substantially orthogonal to the slide movement direction. The tip 4G1a of the upper link 4G1 is positioned in the region), and the tip 4G2a of the lower link 4G2 is positioned in the other region (specifically, the inner region). As a result, when a force that rotates about the vertical shaft 4G3 is applied to the upper link 4G1 and the lower link 4G2, the upper rolling element 4C provided at the tip of the upper link 4G1 is moved to the upper rail. While moving toward the opening side standing wall 21a of the groove 21, the lower side rolling element 4D provided at the tip of the lower side link 4G2 (via the adjustment link 4G21) is the rear side standing wall of the lower side rail groove 22 Provided at the tip of the upper link 4G1 when a force is applied to the upper link 4G1 and the lower link 4G2 to rotate in the reverse direction about the vertical shaft 4G3. The upper rolling element 4C moves in a direction away from the opening-side standing wall 21a of the upper rail groove 21, and at the tip of the lower link 4G2 (via the adjustment link 4G21). Te) lower rolling member 4D provided to move in a direction away from the deeper-side upright wall 22b of the lower rail groove 22. With the above configuration, the movement of the upper rolling element 4C and the movement of the lower rolling element 4D accompanying the switching operation can be synchronized.

  The slide device 42 according to the present embodiment in which the switching unit 422 having such a configuration is provided in pairs at positions separated along the slide movement direction includes an interlocking mechanism 423 that operates the switching units 422 in conjunction with each other. I have.

  As shown in FIGS. 6 and 7, the interlocking mechanism 423 includes a common link interlocking body 4231 that connects the base end portions 4G1b and 4G2b of the links 4G1 and 4G2 of the switching units 422, and an operation unit 424. The link 4G1 and 4G2 of each switching unit 422 are interlocked by operating the link interlocking body 4231 on the basis of the operating force applied to the rolling elements 4C1 and 4G2 provided at the tip portions 4G1a and 4G2a. 4Ds are moved simultaneously or substantially simultaneously.

  The link interlocking body 4231 has a standing piece 4231a having a height dimension smaller than the separation dimension along the height direction of the upper side link 4G1 and the lower side link 4G2, and a pair extending forward from both ends of the standing piece 4231a. Side piece 4231b, and an upper piece 4231c and a lower piece 4231d extending forward from the upper and lower edges of the standing piece 4231a, respectively. In the present embodiment, the upright pieces 4231a, the side pieces 4231b, the upper pieces 4231c, and the lower pieces 4231d are formed by bending a single steel plate. A pair of link shaft insertion holes (not shown) are formed in the upper piece 4231c and the lower piece 4231d of the link interlocking body 4231, respectively, and are formed in each link shaft insertion hole and each link 4G1, 4G2 of each switching unit 422. By inserting the link shaft 4232 in a state where the elongated holes 4G1e and 4G2e communicate with each other, the link interlocking body 4231 and each switching unit 422 are associated with each other. Each link shaft 4232 is secured by a large-diameter head, a fastener such as an E-ring, or caulking. The link interlocking body 4231 having such a configuration is a space formed between the main body portion 4211 of the slider main body 421 and the reinforcing body 4212 based on an operation force applied to the operation portion 424 described below. It is set to be able to advance and retreat using (gap).

  As shown in FIGS. 6 and 7, the operation unit 424 includes a slide operation lever 4241 for a user to directly apply an operation force, a slide operation lever shaft 4242 that is a rotation axis of the slide operation lever 4241, and the slide A slide operation lever abutting plate 4243 for restricting the rotation angle of the operation lever 4241 is provided.

  The slide operation lever 4241 has a knob 4241a at the distal end and a cam surface 4241b at the proximal end. The height of the slide operation lever 4241 is set to be smaller than the distance between the upper piece 4212b and the lower piece 4212c of the reinforcing body 4212 so that it can be accommodated inside the reinforcing body 4212.

  The slide operation lever abutment plate 4243 includes a pair of left and right contact portions 4243a with which a part of the slide operation lever 4241 can contact, an upper piece 4243b connecting the upper ends of the contact portions 4243a, and the contact portions 4243a. And a pair of side pieces 4243d extending forward from the side edge of each contact portion 4243a, and a predetermined angle of the slide operation lever 4241 is provided between the contact portions 4243a. A space allowing rotation within the range is formed. In the present embodiment, the contact portion 4243a, the upper piece 4243b, the lower piece 4243c, and the side piece 4243d are formed by bending a single steel plate. The height of the slide operation lever abutment plate 4243 is set larger than the height of the slide operation lever 4241 and smaller than the separation distance between the upper piece 4212b and the lower piece 4212c of the reinforcing body 4212, and the slide operation lever 4241 is set. At the same time, it can be accommodated inside the reinforcing body 4212. The slide operation lever abutment plate 4243 is integrally attached to the rear surface portion of the upright piece 4212a of the reinforcing body 4212 by welding or the like. Then, a slide operation lever shaft 4242 can be inserted into the upper end 4212b and lower piece 4212c of the reinforcing body 4212, the upper piece 4243b and lower piece 4243c of the slide operation lever abutment plate 4243, and the base end of the slide operation lever 4241, respectively. By inserting the slide operation lever shaft 4242 in a state where the operation lever shaft insertion holes (not shown) are formed and the slide operation lever shaft insertion holes are in communication with each other, the reinforcing body 4212 and the slide operation lever abutment plate are inserted. 4243 and the slide operation lever 4241 are associated with each other, and the slide operation lever 4241 can be rotated about the slide operation lever shaft 4242. Note that the standing piece 4212a of the reinforcing body 4212 is formed with a notch for avoiding interference between the base end portion of the slide operating lever 4241 and the reinforcing body 4212 when the slide operating lever 4241 is rotated.

  Next, the method of using the desk 1 will be described, particularly focusing on the operation and action when the top plate 5 is slid along the base 2 together with the support 4 or the sliding movement is restricted.

  First, when the switching mechanism 4E of each switching unit 422 is switched from the movement restricted state (see FIGS. 4 to 7) to the movement allowed state (see FIGS. 9 to 12), a predetermined operating force is applied to the slide operation lever 4241. Is granted. Specifically, the knob 4241a of the slide operation lever 4241 is gripped, and the slide operation lever 4241 is rotated in the direction of arrow A in FIGS. 6 and 7 around the slide operation lever shaft 4242. As the slide operation lever 4241 rotates, the link interlocking body 4231 pressed against the cam surface 4241b of the slide operation lever 4241 moves from the reinforcing body 4212 toward the main body portion 4211 (FIGS. 11 and 12). reference). Then, the links 4G1 and 4G2 of the switching units 422 in which the base end portions 4G1b and 4G2b are connected to the link interlocking body 4231 are interlocked and rotated around the link shaft 4232, respectively. In each switching unit 422, the upper link 4G1 and the lower link 4G2 facing each other in the height direction rotate about a common link shaft 4232, so that the upper link 4G1 is connected via the upper roller support 4Ca. The upper rolling element 4C provided at the distal end 4G1a moves toward the opening-side standing wall 21a of the upper rail groove 21, and the adjustment link 4G21 and the lower roller support 4Da are attached to the distal end 4G2a of the lower link 4G2. The lower rolling element 4 </ b> D provided therethrough moves toward the rear standing wall 22 b of the lower rail groove 22. As a result, as shown in FIG. 10, the switching mechanism 4E of each switching unit 422 releases the contact state of the upper contact body 4A with respect to the opening side standing wall 21a of the upper rail groove 21 and moves the upper rolling element. 4C is brought into contact with the opening-side standing wall 21a of the upper rail groove 21, and the lower-side rolling element 4D is released by releasing the contact state of the lower-side contact body 4B with the rear-side standing wall 22b of the lower rail groove 22 Is allowed to move in contact with the rear standing wall 22b of the lower rail groove 22. Thereby, it is possible to slide the top plate 5 together with the support 4 with respect to the base 2. In this embodiment, since the rolling elements 4C and 4D are relatively moved with respect to the contact bodies 4A and 4B in accordance with the above operation, the switching mechanism 4E is changed from the movement restricted state to the movement permitted state. In the case of switching, the relative angle of the support 4 with respect to the base 2 is displaced, resulting in an angular posture in which the anti-base 2 side of the support 4 jumps up (see FIGS. 9 and 10). According to such a change in the angle of the support 4 with respect to the base 2, the top plate 5 connected to the support 4 by the hinge mechanism H and having the other end supported by the leg 6 is shown in FIGS. As shown in FIG. 9 and FIG. 9, since the rotation angle is set so that the relative angle with respect to the support 4 can be changed by turning around the hinge axis H1, the switching mechanism 4E switches the slide device 42 from the movement restricted state to the movement permitted state. Further, only an operation force for changing the angle of the support body 4 with respect to the base 2 is required, and an operation force for raising the top plate together with the support body together with the base (simultaneously changing the angle) is required. In comparison, it is possible to perform the switching operation with a remarkably light operating force. When the switching mechanism 4E is switched from the movement-restricted state to the movement-permitted state, a position (in other words, a position relatively distant from the hinge mechanism H among the plurality of priority support portions 412 with a change in the angle of the top plate 5 with respect to the support body 4 For example, the contact state between the priority support portion 412 on the base 2 side and the top plate 5 is released. In the present embodiment, the auxiliary rolling element 4H that can be brought into contact with the bottom wall 21c of the upper rail groove 21 is provided in the main body portion 4211 of the slide device 42 (see FIGS. 5 and 10).

  On the other hand, the operation of switching the switching mechanism 4E of each switching unit 422 from the movement-permitted state to the movement-restricted state is performed by applying an operation force that returns the slide operation lever 4241 to the original position. Specifically, the knob 4241a of the slide operation lever 4241 exposed from the reinforcing body 4212 is gripped, and the slide operation lever 4241 is rotated in the direction of arrow B in FIGS. 11 and 12 around the slide operation lever shaft 4242. Perform the operation to move. As the slide operation lever 4241 rotates, the link interlocking body 4231 moves toward the reinforcing body 4212, and the links 4G1 and 4G2 of the switching units 422 are interlocked to rotate around the link shaft 4232, respectively. To do. The upper side link 4G1 and the lower side link 4G2 rotate around the common link shaft 4232 in the opposite direction to the case where the switching mechanism 4E is switched from the movement restricted state to the movement permitted state. The upper rolling element 4C provided at the distal end 4G1a moves in a direction away from the opening side standing wall 21a of the upper rail groove 21, and the lower rolling element 4D provided at the distal end 4G2a of the lower link 4G2. Moves in a direction away from the rear side standing wall 22b of the lower rail groove 22. As a result, the support body 4 moves in the direction of sinking due to the weight of the support body 4 itself and the weight of the top plate 5, and the switching mechanism 4E of each switching unit 422, as shown in FIG. The upper rolling element 4C is released from the contact state with the opening side standing wall 21a to bring the upper contact body 4A into contact or pressure contact with the opening side standing wall 21a of the upper rail groove 21, and the lower rail groove. A movement restriction state in which the contact state of the lower rolling body 4D with respect to the rear side standing wall 22b of 22 is released and the lower side contact body 4B is brought into contact with or pressed against the rear side standing wall 22b of the lower rail groove 22; Become. The auxiliary rolling element 4H is also lifted from the bottom wall 21c of the upper rail groove 21. Thereby, the sliding movement of the support body 4 with respect to the base 2 and by extension, the top plate 5 is regulated. When the switching mechanism 4E is switched from the movement-permitted state to the movement-restricted state, the top plate 5 rotates around the hinge axis H1 of the hinge mechanism H according to the angle change of the support body 4 with respect to the base 2. The support body 4 is supported by the priority support portion 412. In the present embodiment, the side lock lever 4I is provided on the slide device 42 in order to complement the slide movement / regulation function of the switching mechanism 4E. The side lock lever 4I is rotatable about the side lock lever shaft 4Ia, and a state in which the pressing surface 4Ib provided at the base end is pressed against or abutted against the rising surface 2A of the base 2, and It can be switched between the pressure contact state or the state in which the contact state is released. In addition, the rotation of the slide operation lever 4241 at the time of the switching operation is restricted by a part of the slide operation lever 4241 coming into contact with the contact portion 4243a of the slide operation lever abutting plate 4243.

  Thus, the desk 1 according to the present embodiment is such that the top plate 5 can be turned horizontally with respect to the support 4 by the action of the turning mechanism 52 as described above, and the movable top plate main body 511 is mounted on the support 4. The top plate 5 is horizontally swiveled by gripping the swivel stopper rail 5122, which is the “insertion target portion” of the present invention, which is integrally provided on the lower surface (corresponding to “the bottom surface of the top plate” of the present invention). A swaging mechanism 4J is provided that can be switched between a swivel regulation state to be regulated and a swiveling permission state in which the top plate 5 is allowed to turn horizontally by releasing the swallowing state (see FIGS. 4 and 8). .

  Here, the turning stopper rail 5122 which plays a role as the “pinch target portion” of the present invention will be described in detail.

  The turning stopper rail 5122 is a plan view showing the relationship between the turning stopper rail 5122 and the top plate receiving portion main body 5121 in FIG. 13 (the imaginary line indicates the turning plate 5a of the top plate receiving portion main body 5121 and the top plate 5). As shown in FIG. 2, the top plate 5 has a substantially circular shape in plan view having a central angle that is the same as or slightly larger than the turning angle at which the top plate 5 can be turned horizontally. . In the present embodiment, since the top plate 5 is capable of turning 180 degrees, a substantially semi-ring shape having a central angle slightly larger than 180 degrees or 180 degrees is applied as the turning stopper rail 5122. This turning stopper rail 5122 is a cross-sectional view including an upright portion 5122a that is substantially orthogonal to the surface direction of the top plate 5 and a horizontal portion 5122b that extends in the horizontal direction from the lower edge of the upright portion 5122a. It is substantially L-shaped. In this embodiment, the standing part 5122a and the horizontal part 5122b are integrally formed. The turning stopper rail 5122 is positioned on the lower surface portion in the front half region of the top plate receiving portion main body 5121, and the turning stopper rail 5122 and the top plate receiving main body 5121 are screwed to the lower surface side of the movable top plate main body 511. It is attached integrally. Further, the height dimension of the turning stopper rail 5122 is set larger than the height dimension of the turntable 521.

  On the other hand, as shown in FIGS. 8 and 14 to 16, the pinching mechanism 4 </ b> J has a pinchable position (A) where the swivel stopper rail 5122 (more specifically, the horizontal portion 5122 b) can be pinched, The retractable body 4J1 that can rotate around the horizontal axis between the retracted position (B) that has released the retracted state, and the retractable position 4A1 between the retractable position (A) and the retractable position (B). And an operation unit 4J2 for applying an operation force to be switched between.

  The retractable body 4J1 includes a retractable body main body 4J11 extending horizontally and a pair of hanging pieces 4J12 that are suspended from both ends of the retractable body main body 4J11. In the present embodiment, the retractable body 4J1 is formed from a material having high rigidity such as metal, and the retractable body 4J11 and the pair of hanging pieces 4J12 are integrally provided. At the front end of the retractable body 4J11, a catching claw 4J11a that can directly abut against the turning stopper rail 5122 is provided. The nail claw 4J11a is provided with a radius corresponding to the radius of the turning stopper rail 5122. The nail claw 4J11a is set so that the height dimension gradually decreases toward the tip. Of the retractable body 4J11, the nail claw 4J11a protrudes forward (base 2 side) from each hanging piece 4J12. Each hanging piece 4J12 includes a first insertion hole 4J12a for a retractable body rotating shaft into which the rotational shaft 4JX of the retractable body 4J1 can be inserted, a retractable position (A) and a retracted release position (B) of the retractable body 4J1. And a first guide hole 4J12b that defines a movement locus between the first guide hole 4J12b and the first guide hole 4J12b. In the present embodiment, the first insertion hole 4J12a for the retractable body rotating shaft is formed at a position displaced from the center of gravity of the retractable body 4J1. The first guide hole 4J12b is a long hole extending along a direction inclined by a predetermined angle with respect to the retractable body 4J11.

  The operation portion 4J2 has a substantially lever shape, a knob portion 4J21 is provided at the distal end portion, a cam surface 4J22 having a linear portion and a curved portion at the proximal end portion, and an operation portion rotation in which the rotation shaft 4JY of the operation portion 4J2 can be inserted. The shaft first insertion hole 4J23 is formed. The width dimension of the operation part 4J2 is set smaller than the separation dimension between the outward faces of the hanging pieces 4J12 of the retractable body 4J1.

  In the present embodiment, the pinching mechanism 4J is provided in association with the reinforcing frame 411d of the frame body 411 of the support body 4. Therefore, the pinching mechanism 4J includes an operation unit support 4J3 that fixes one end to the reinforcement frame 411d and supports the operation unit 4J2, and an operation unit abutment plate 4J4 provided between the reinforcement frame 411d and the operation unit 4J2. It has.

  The operation unit support 4J3 includes a pair of upright pieces 4J31 whose distal ends are fixed to the reinforcing frame 411d by welding or the like, and connection pieces 4J32 that connect the upper ends of the base end portions of the upright pieces 4J31. . In the present embodiment, the upright pieces 4J31 and the connecting pieces 4J32 are formed by bending a single steel plate. A retractable body rotating shaft second insertion hole 4J31a that communicates with a retractable body rotating shaft first insertion hole 4J12a formed in the hanging piece 4J12 of the retractable body 4J1 is formed on the distal end side of each standing piece 4J31. A second guide hole 4J31b that defines a movement trajectory of the operation portion 4J2 when an operation force is applied to the operation portion 4J2 is formed at a substantially central portion in the longitudinal direction of each standing piece 4J31. In the present embodiment, a long hole extending along the longitudinal direction of each upright piece 4J31 is applied as the second guide hole 4J31b. In addition, the separation dimension between the inward surfaces of the upright pieces 4J31 is set larger than the separation dimension between the outward surfaces of the hanging pieces 4J12 of the retractable body 4J1.

  The operation portion abutting plate 4J4 has a substantially U-shape in cross-section, including an upright piece 4J41, and an upper piece 4J42 and a lower piece 4J43 extending forward from the upper and lower edges of the upright piece 4J41. In the present embodiment, the upright pieces 4J41, the upper pieces 4J42, and the lower pieces 4J43 are formed by bending a single steel plate. Then, the upper piece 4J42 protruding forward from the lower piece 4J43 is fixed to the upper surface portion of the auxiliary frame 411d by welding or the like, and the front end portion of the lower piece 4J43 is fixed to the rear surface portion of the auxiliary frame 411d by welding or the like. ing. The standing piece 4J41 is formed with a pair of rotation stopper pin insertion holes 4J41a into which a pair of rotation stopper pins 4JP can be inserted. The reinforcing frame 411d is formed with a rotation stopper pin hole 411da capable of accommodating the rotation stopper pin 4JP, and a rotation stopper pin accommodation space 4J2s capable of accommodating the rotation stopper pin 4JP is formed at the base end of the operation portion 4J2. (See FIG. 14).

  Then, the rotation stopper pin 4JP is continuously inserted into the rotation stopper receiving hole 411da of the reinforcing frame 411d and the rotation stopper pin insertion hole 4J41a of the operation portion abutting plate 4J4, and the tip portion of each rotation stopper pin 4JP is inserted into the operation portion. It is positioned in the 4J2 rotation stopper pin accommodating space 4J2s. In this state, the second guide hole 4J31b of the operation portion support 4J3, the first guide hole 4J12b of the retractable body 4J1, the first insertion hole 4J23 for the operation portion rotation shaft of the operation portion 4J2, and the distal end portion of the rotation stopper pin 4JP. The formed second insertion hole 4JPa for operation unit rotation shaft is communicated with each other, and the rotation shaft 4JY of the operation unit 4J2 is continuously inserted into each of the holes 4J31a, 4J12b, 4J23, 4JPa. On the other hand, the second insertion hole 4J31a for the retractable body rotating shaft of the operating portion support body 4J3 and the first insertion hole 4J12a for the retractable body rotating shaft of the retractable body 4J1 are connected to each other, and the retractable body 4J1 is inserted into each of the holes 4J31a, 4J12a. The rotation shaft 4JX is continuously inserted. As described above, the squeezing mechanism 4J formed by associating the reinforcing frame 411d, the retractable body 4J1, the operation portion 4J2, the operation portion support body 4J3, and the operation portion abutment plate 4J4 is integrally assembled to the support body 4. The reinforcement frame 411d is set at an attachment position so as to substantially coincide with a virtual straight line connecting the pair of priority support portions 412 provided on the base 2 side among the plurality of priority support portions 412 provided on the support body 4. The swaging mechanism 4J provided in the reinforcing frame 411d is positioned in the support area of the priority support portion 412 or in the vicinity of the support area (see FIGS. 17 and 18 described later). The rotary shafts 4JX and 4JY are prevented from coming off by large-diameter heads, fasteners such as E-rings, or caulking.

  Next, an operation method and operation of the scavenging mechanism 4J will be described.

  When the retractable body 4J1 is positioned at the retractable position (A), the horizontal rotation of the top plate 5 is regulated by gripping the horizontal portion 5122b of the swing stopper rail 5122 by the gripping claws 4J11a of the retractable body 4J1. (See FIG. 8). In this case, the operation portion 4J2 makes the linear portion of the cam surface 4J22 contact or pressure contact with the operation portion abutment plate 4J4, and has a substantially horizontal posture as a whole, and its maximum height dimension is the maximum height dimension of the frame body 411. Smaller. Further, the rotation shaft 4JY of the operation portion 4J2 is positioned at the lower edge of the first guide hole 4J12b formed in the retractable body 4J1, and the rear edge of the second guide hole 4J31b formed in the operation portion support body 4J3 (anti-base 2). Position). When the rotation shaft 4JY of the operation portion 4J2 is locked in a state where it is positioned at the lower edge of the first guide hole 4J12b, the rotation of the retractable body 4J1 around the rotational shaft 4JX is restricted, and the retractable body 4J1 is It is locked at the retractable position (A). Further, when the swaging mechanism 4J is in the turning restricted state, the lower surface of the movable top plate main body 511 is supported at a plurality of points by the respective priority support portions 412.

  On the other hand, the swaging mechanism 4J is switched from the turning restricted state to the turning allowed state by gripping the knob 4J21 of the operation unit 4J2 and applying an operation force that rotates the operation unit 4J2 downward. Based on this operation force, the operation unit 4J2 rotates downward about the rotation shaft 4JY. Then, the object that abuts or presses against the operation unit abutment plate 4J4 at the next point after the operation unit 4J2 is rotated by a predetermined angle is switched from the straight part of the cam surface 4J22 of the operation unit 4J2 to the curved part, and the rotation shaft 4JY of the operation unit 4J2 is changed. It moves forward (base 2 side) along the second guide hole 4J31b. Along with the movement of the rotating shaft 4JY, the retractable body 4J1 rotates rearward (on the side opposite to the base 2) around the rotating shaft 4JX, and the nail claw 4J11a is separated from the horizontal portion 5122b of the turning stopper rail 5122. It moves to the nudge release position (B) that has been made (see FIG. 15). The rotation trajectory between the retractable position (A) and the retracting position (B) of the retractable body 4J1 is defined by the first guide hole 4J12b. That is, when the retractable body 4J1 moves between the retractable position (A) and the retractable release position (B), the height position of the rotary shaft 4JY of the operation unit 4J2 is unchanged, and the retractable body 4J1 When positioned at the retractable position (A), the rotation shaft 4JY of the operation portion 4J2 is positioned at the lower edge of the first guide hole 4J12b, and the retractable body 4J1 is positioned at the retracting position (B). The rotation shaft 4JY of the operation unit 4J2 is positioned at the upper edge of the first guide hole 4J12b. Further, when the retractable body 4J1 is moved from the retractable position (A) to the retractable position (B), a part of the hanging piece 4J12 of the retractable body 4J1 comes into contact with the reinforcing frame 411d so that the retractable body 4J1. Is further restricted in the same direction. Since the rotary shaft 4JX is provided at a position displaced from the center of gravity of the retractable body 4J1, the movement of the retractable body 4J1 from the retractable position (A) to the retracting position (B) is caused by the weight of the retractable body 4J1. Can be used. By moving the retractable body 4J1 from the retractable position (A) to the retracting position (B) in this way, the retracting mechanism 4J causes the retraction of the turning stopper rail 5122 by the retractable body 4J1 and the reinforcing frame 411d. Is in a turning-permitted state where the top plate 5 is allowed to turn horizontally, and as shown in FIGS. 17 and 18, a posture in which the longitudinal direction of the top plate 5 is substantially orthogonal to the longitudinal direction of the base 2, Alternatively, the turning angle posture of the top plate 5 with respect to the base 2 such as a posture in which the longitudinal direction of the top plate 5 is substantially parallel to the longitudinal direction of the base 2 can be appropriately selected. In FIGS. 17 and 18, the retracting mechanism 4J in which the retractable body 4J1 is in the retractable position (A) is shown, and a part of the retracting mechanism 4J is omitted.

  Then, when the swaging mechanism 4J is in a turning-permitted state, the top plate 5 is in a state of being able to rotate in the direction of lifting with respect to the support body 4 around the hinge axis H1 of the hinge mechanism H as shown in FIG. .

  On the other hand, the operation of switching the swaging mechanism 4J from the turning permission state to the turning restriction state is performed by applying an operation force that returns the operation unit 4J2 to the original position. In addition, before performing the operation which switches the swaging mechanism 4J from a turning permission state to a turning control state, it is necessary to return the top plate 5 to the normal use position shown in FIG. Then, when the knob 4J21 of the operation unit 4J2 is gripped and an operation force for rotating the operation unit 4J2 upward is applied, the operation unit 4J2 rotates upward about the rotation shaft 4JY. Then, when the operation unit 4J2 is rotated by a predetermined angle, the object to be in contact with or pressed against the operation unit abutment plate 4J4 is switched from the curved portion of the cam surface 4J22 of the operation unit 4J2 to the linear portion, and the rotation shaft 4JY of the operation unit 4J2 is changed to the first. 2 Moves backward (on the side opposite to the base 2) along the guide hole 4J31b. As the rotary shaft 4JY moves, the retractable body 4J1 rotates toward the front (base 2 side) around the rotary shaft 4JX and grips the horizontal portion 5122b of the turning stopper rail 5122. Positioned at (A). In this way, by moving the retractable body 4J1 from the retracting position (B) to the retractable position (A), the horizontal portion 5122b of the turning stopper rail 5122 is pulled downward (reinforcing frame 411d side), and the top plate 5 horizontal turning is restricted. In this way, the retracting body 4J1 of the switching mechanism 4J pushes the horizontal portion 5122b of the turning stopper rail 5122 downward along with the operation of switching the swaging mechanism 4J from the turning permission state to the turning restriction state, thereby turning the turning stopper rail 5122. At the same time, the movable top plate main body 511 is drawn downward, and the lower surface of the movable top plate main body 511 is in pressure contact with the priority support portion 412, and a good support state of the top plate 5 is ensured. In addition, the rotation locus between the retractable position (A) and the retracting position (B) of the retractable body 4J1 is defined by the first guide hole 4J12b as described above. Further, when the operation of moving the retractable body 4J1 from the insertion release position (B) to the insertion-possible position (A) is performed, a part of the operation unit 4J2 comes into contact with the connection piece 4J32 of the operation unit support 4J3. This restricts further rotation of the operation portion 4J2 in the same direction.

  When the swaging mechanism 4J is in the turning restricted state, as shown in FIG. 8, the top plate 5 is in a state in which it cannot rotate in the direction of lifting up with respect to the support body 4 around the hinge axis H1 of the hinge mechanism H. .

  As described above, the desk 1 according to the present embodiment includes the priority support portion 412 in which the support body 4 comes into contact with the lower surface of the top plate 5 preferentially over other parts at any turning angle that the top plate 5 can take. A turning restriction state for restricting the horizontal turning of the top plate 5 by releasing the turning stopper rail 5122 provided integrally on the lower surface side of the top plate 5 and releasing the swivel state is released. Accordingly, since the swivel mechanism 4J is switchable between a swivel permission state that allows the top plate 5 to turn horizontally, the swivel mechanism 4J is switched from the swivel permission state to the swivel restricted state. In addition to effectively exhibiting the braking performance against the turning of the top plate 5, the entire top plate 5 is drawn downward together with the turning stopper rail 5122, and the lower surface of the movable top plate body 511 is brought into contact with or pressed against the priority support portion 412. Rukoto can, it is possible to realize a good supporting state capable of receiving a load applied to the top board 5 through a priority supporting portion 412 in the support 4. In addition, as shown in FIGS. 17 and 18, the priority support portion 412 supports the top plate 5 in contact with the lower surface of the top plate 5 regardless of the turning angle. The situation where the support state of 5 deteriorates does not occur, and the utility is excellent.

  As described above, the desk 1 according to the present embodiment switches the swivel mechanism 4J from the turning permission state to the turning restriction state, thereby improving the brake for the turning of the top plate 5 and the good support state of the top plate 5. Can be made compatible.

  In particular, the retracting member 4J1 is movable between a retractable position (A) where the swivel stopper rail 5122 can be inserted and a retractable position (B) where the retracted state is released. Since the retractable body 4J1 that is provided and positioned at the retractable position (A) is provided in or near the support area of the support body 4 by the priority support portion 412, the retractable body 4J1 turns the rotation stopper. Along with the operation of pulling the rail 5122 downward, at least the region where the turning stopper rail 5122 is provided in the top plate 5 and the vicinity of the region where the turning stopper rail 5122 is provided are reliably brought into contact or pressure contact with the priority support portion 412. Can be supported.

  Further, since the turning stopper rail 5122 and the retractable body 4J1 are made of a highly rigid material, the turning stopper rail 5122 and the retractable body 4J1 are prevented from being deformed, and a stable swaging operation is maintained over a long period of time. can do.

  In addition, the support 4 has a plurality of priority support portions 412 that can be point-supported, and can support the top plate 5 at a plurality of points at any turning angle, so that the top plate 5 has any turning angle. A stable support state without wobbling is achieved.

  Further, the top plate 5 is connected to the support 4 via the hinge mechanism H at a portion different from the portion where the turning stopper rail 5122 is provided, and the top plate 5 is lifted with respect to the support around the hinge axis H1 of the hinge mechanism H. Since the swivel mechanism 4J allows the lifting operation of the top plate 5 in the turning-permitted state and restricts the lifting operation of the top plate 5 in the swiveling-restricted state, the swaging mechanism 4J also functions as a top plate floating restriction mechanism that restricts the lifting operation of the top plate 5, and it is not necessary to provide a dedicated top plate floating restriction mechanism, so that the mechanism can be shared and the structure simplified. .

  In particular, since the retractable body 4J1 is rotatable about the horizontal axis between the retractable position (A) and the retractable position (B), the retractable body 4J1 and the retractable body 4J1 Interference with the turning stopper rail 5122 can be prevented.

  Further, when the hinge mechanism H is positioned at a position out of the support area of the top plate 5 by the priority support portion 412 so that the swivel mechanism 4J is allowed to turn and the top plate 5 is lifted, the lift operation is performed. However, the brake by the priority support portion 412 is not applied, and the top plate 5 can be lifted smoothly.

  Since the turning stopper rail 5122 is substantially annular in plan view having a central angle that is the same as or slightly larger than the turning angle at which the top plate 5 can be turned horizontally, with the turning axis 5a of the top plate 5 being the center. The turning stopper rail 5122 can be gripped at any turning angle, and the top plate 5 can be firmly received. In this embodiment, the turning stopper rail 5122 includes an upright portion 5122a that is substantially orthogonal to the surface direction of the top plate 5, and a horizontal portion 5122b that extends in the horizontal direction from the lower edge of the upright portion 5122a. Since the horizontal portion 5122b is gripped by the gripping mechanism 4J, the portion that is gripped by the gripping mechanism 4J is simplified while the shape of the turning stopper rail 5122 is simplified. Since the horizontal piece 5122b extends inwardly from the lower edge, the grip portion becomes invisible or difficult to visually recognize from the outside, and does not give a complicated impression to the user.

  Furthermore, since the support body 4 is supported by the base 2 and the pinching mechanism 4J is provided on the base 2 side of the support body 4, the load on the top plate 5 is supported via the pinching mechanism 4J. 4 and base 2 can be received efficiently.

  The present invention is not limited to the embodiment described in detail above.

  For example, an approximately U-shaped retracting body is used as the scavenging mechanism, and the retracting body is moved forward and backward along the horizontal direction to grip the target object, and in the swallowed state. A mode in which the insertion target part is drawn downward or a movable body that makes a pair that can move relative to the support is used, and the insertion symmetrical part is held between these movable bodies, and the insertion target You may employ | adopt the aspect which draws in a part toward a downward direction.

  In addition, if the top plate is not connected to the support via a hinge mechanism, but is supported by the support so that it cannot be lifted, it can be provided as a pinching mechanism so that the height position cannot be changed on the support. Intrusion release that releases the indentation state by the stationary body and the stationary object and the indentable position where the object to be entrained can be inserted between the stationary body and the stationary body You may apply the thing provided with the drawing-in object which can move along a predetermined direction (for example, vertical direction) between positions.

  In the above embodiment, the support is provided with a turning stopper mechanism (indicated by reference numeral 4K in FIGS. 4 and 8, etc.) in order to supplement the turning restriction function of the top plate by the swaging mechanism. Of course, it does not matter even if it is an aspect in which such a turning stopper mechanism is not provided.

  In the above-described embodiment, the support is illustrated as being supported so as to be slidable with respect to the base. However, the support may be supported so as not to be slidable with respect to the base.

  The priority support portions are not limited to those that can be point-supported, and the number of the priority support portions may be appropriately changed according to the weight, shape, etc. of the top plate.

  In addition, instead of the turning stopper rail, for example, a downward projecting portion provided at a predetermined pitch or continuously on a virtual line corresponding to the turning trajectory of the top plate is adopted on the lower surface side of the top plate as the insertion target portion. Also good.

  Moreover, you may provide a several pinching mechanism in a single support part.

  On the other hand, in the case where a part of the top plate is supported by the legs, a leg that is not provided with a moving body at the lower end may be applied. In this case, to turn the top plate horizontally, the top plate may be lifted up to a position where the lower end of the leg floats from the floor surface. The top plate may be a cantilever type (without legs) supported only by the support. Furthermore, as a top plate, the shape in plan view is circular, oval, polygonal, L-shaped, T-shaped, rectangular (including square), or one end side is polygonal and the other end side is partial Various shapes such as an arc shape may be applied.

  Moreover, as a furniture with a top plate provided with the support body which concerns on this invention, and a top plate, the table which can be used in dining etc. other than the desk shown in the said embodiment is mentioned.

  In addition, the specific configuration and the like of each part of the pinching mechanism are not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

1 is an overall schematic diagram of a desk according to an embodiment of the present invention. The disassembled perspective view of the top plate which concerns on the same embodiment. The exploded perspective view of the support body concerning the embodiment. The schematic side view which fractures | ruptures and shows partially the desk in which the switching mechanism is a movement control state in the embodiment. The principal part expansion side view of the desk in which the switching mechanism is in a movement control state in the embodiment. The principal part enlarged plan view of the support body in which the switching mechanism is in a movement control state in the embodiment. The principal part expanded bottom view of the support body in which the switching mechanism is in a movement control state in the embodiment. The enlarged view of the fracture | rupture area | region in FIG. FIG. 3 is a schematic side view showing the desk in which the switching mechanism is in a movement-permitted state with a part thereof broken in the embodiment. The principal part enlarged side view of the desk in which the switching mechanism is in a movement permissible state in the embodiment. The principal part enlarged plan view of the support body in which the switching mechanism is in a movement allowable state in the same embodiment. The principal part enlarged bottom view of the support body in which the switching mechanism is in a movement permissible state in the same embodiment. The top view of the rotation stopper rail in the embodiment. The disassembled perspective view of the pinching mechanism which concerns on the same embodiment. Action explanatory drawing. The enlarged view of the fracture | rupture area | region in FIG. The top view which abbreviate | omits and partially shows the desk which concerns on the same embodiment. The top view which abbreviate | omits and shows the desk which concerns on the same embodiment which changed the turning angle of the top plate.

Explanation of symbols

1 ... Furniture with a top board (desk)
4 ... Support body 412 ... Preferential support part 4J ... Retraction mechanism 4J1 ... Retractable body (A) ... Retractable position (B) ... Retraction position 5 ... Top plate 5122 ... Retraction target part (swivel stopper rail)
H ... Rotation allowance mechanism (hinge mechanism)
H1 ... Hinge shaft

Claims (9)

A furniture with a top plate provided with a support and a top plate supported by the support and capable of turning horizontally with respect to the support,
The support is
A priority support portion that comes into contact with the lower surface of the top plate preferentially over other parts at any turning angle that the top plate can take;
The horizontal rotation of the top plate is regulated by pulling it downward with the insertion target portion provided integrally or integrally with the lower surface side of the top plate, and the lower surface of the top plate is given priority. A swivel mechanism that can be switched between a swivel regulation state that is in contact with or pressed against a support portion and a swivel permission state that permits horizontal swiveling of the top plate by releasing the swivel state. Furniture with a top board characterized by being. The pinching mechanism is
It is provided with a retractable body that can be moved between a retractable position where the insertion target part can be inserted and an insertion release position where the insertion state is released,
The furniture with a top plate according to claim 1, wherein the retractable body positioned at the squeezable position is positioned in a support area or in the vicinity of the support area by the priority support portion of the support body. The furniture with a top plate according to claim 2, wherein the insertion object portion and the retractable body are made of a highly rigid material. The support body has a plurality of priority support portions that can support the top plate in a point, and supports the top plate at a plurality of priority support portions at any turning angle that the top plate can take. The furniture with a top plate according to claim 1, 2 or 3. The top plate is connected to the support through a rotation permission mechanism that allows the top plate to rotate in a direction in which the top plate is lifted up. Is,
5. The ceiling according to claim 1, wherein the pinching mechanism allows the top plate to lift when the swivel is permitted, and restricts the top motion when the top is restricted. Furniture with boards. The said insertion mechanism is provided with the retractable body which can rotate between the insertion possible position which can insert the said insertion object part, and the insertion release position which canceled the insertion state. 5. Furniture with a top board according to 5. The furniture with a top plate according to claim 5 or 6, wherein the rotation permission mechanism is positioned at a position out of a support region by the priority support portion of the top plate. The plan view object has a substantially annular shape with a center angle that is the same as or slightly larger than a turning angle at which the top plate can be turned horizontally, with the turning target portion as a center and a turning angle at which the top plate can be turned horizontally. Furniture with a top plate as described in 3, 4, 5, 6 or 7. The swallowing target portion includes an upright portion that is substantially orthogonal to the surface direction of the top plate, and a horizontal portion that extends in the horizontal direction from the lower edge of the upright portion. The furniture with a top plate according to claim 8, wherein a portion is received by the insertion mechanism.

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