JP2008119339A - Support body and furniture with top board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a support body capable of supporting a turnable top board in a stable condition and responding to various kinds of layout changes. <P>SOLUTION: The support board 4 includes a frame body 4A having a general square shape in plan view and having an internal space 4AS capable of housing a turning mechanism 52 turning the top board 5, and is attachable to and detachable from a base 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a support and furniture with a top plate provided with the support.

  2. Description of the Related Art Conventionally, various furniture with a top plate including a support body supported by a base and a top board supported by the support body so as to be horizontally rotatable 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.

  However, when the support is a flat plate, the swivel mechanism is placed on the upper surface of the support, so that the space corresponding to the height of the swivel mechanism is the upper surface of the support and the lower surface of the top plate. The top plate itself and the top plate are provided with the impression that the top plate is clearly floating from the support body and the support body supports the top plate via a turning mechanism. There is also a problem that the support cannot directly receive the load applied to the substrate, and the stability is poor. On the other hand, when the thickness of the support is set to be large in order to increase the support strength, the weight of the support itself increases, which causes a problem that the load acting on the base increases. In addition, recently, there is a request to increase or decrease the number of top plates as appropriate according to various layout changes. However, since the conventional support is fixed to a base such as a wall surface in a non-detachable manner, the above request is required. I couldn't respond.

  The present invention has been made paying attention to such problems, and its main purpose is to stably support a support target portion such as a turnable top plate and to cope with various layout changes. And a furniture with a top plate provided with such a support.

  That is, the support body of the present invention is supported by the base in a state in which a support object such as a top plate is supported so as to be horizontally turnable, and is capable of accommodating a turning mechanism for turning the support object. It is characterized by comprising a substantially B-shaped frame body in plan view and detachable from the base.

  In such a case, as compared with the case where the support is a flat plate, by adopting the frame structure, not only the support strength for the support object is remarkably improved, but also the internal space of the frame body In order to accommodate the swivel mechanism, the space corresponding to the height of the swivel mechanism is not formed between the upper surface of the support and the lower surface of the object to be supported, and the top plate is clearly lifted from the support Is not given to the user, and the stability of the support state can be grasped visually. Further, since the turning mechanism is accommodated in the internal space of the frame body, the frame body directly receives the load of the top plate, and a good support state of the top plate can be maintained. In addition, it is a rugged frame structure that can be attached to and detached from the base. It is possible to select from a mode in which a single support is supported, a mode in which a plurality of supports are supported, or a mode in which all the supports are removed from the base. The number of objects can be increased or decreased as appropriate. It becomes rich in versatility. Further, since the frame structure has an internal space, it is possible to effectively reduce the weight, and it is possible to reduce the burden on the base supporting such a support as much as possible. Note that the “substantially square shape in plan view” is a concept that includes a rounded corner portion or a straight portion.

  In particular, the frame body includes a plurality of priority support portions that are in contact with or pressed against the lower surface of the support object in preference to other parts, and at least two of the priority support portions are preferred. If the support portion is set at an equal distance from the center of rotation of the support object, the top plate load can be distributed and supported by each priority support portion in order to receive the support object by a plurality of priority support portions. In addition, at least two priority support portions set at equal distances from the center of rotation of the support object are each subjected to substantially the same load, and the support object can be supported in a more stable state.

  In order to achieve a stable state with no rattling regardless of the turning angle of the support object, each priority support portion is capable of point support of the support object, and the support object takes What is necessary is just to make it support the said support target object in multiple points by these some priority support parts in what rotation angle to obtain.

  Furthermore, if the priority support part is formed of a material having high rigidity, the priority support part is prevented from being deformed, which contributes to an improvement in load resistance.

  A turning switching mechanism capable of switching between a turning restriction state for restricting horizontal turning of the support object and a turning permission state for allowing horizontal turning of the support object, wherein the turning switching mechanism includes the support object; A retractable body that is movable between a retractable position where the object to be inserted integrally or integrally provided on the lower surface side of the object can be inserted, and an insertion release position where the insertion state is released, With the movement of the retractable body, the support object is pulled in the downward direction with the object to be grasped, and the lower surface of the support object is brought into contact with or pressed against a part of the frame body, thereby It is possible to switch between a turning restriction state for restricting turning and a turning permission state for allowing horizontal turning of the support object by releasing the pinching state, and the pinching target portion is the frame. So that it can be accommodated in the internal space of the body. Therefore, by switching the turning switching mechanism from the turning permission state to the turning restriction state, it is possible to effectively exhibit the braking performance against the turning of the support object and to accommodate the swallowing target portion in the internal space of the frame body. There is no need to secure a dedicated installation space between the lower surface of the support object and the support.

  In particular, if the moving area between the retractable position and the retracting position of the retractable body is set in the internal space of the frame body, the retractable body is utilized using the internal space of the frame body. By moving the between the retractable position and the retracting position, it is not necessary to separately secure a moving space for the retractable body, and the retractable body can be smoothly moved.

  As a preferred embodiment, the retractable body is capable of horizontally turning between the retractable position and the retractable position, and the frame body moves the retractable body from the retracted position. An embodiment may be provided that includes a retracting body pressing portion that contacts or presses a part of the retracting body and presses the retracting body downward when moving to the retractable position.

  The base is provided with a guide portion that continuously extends in a region extending from one end to the other end, a movement restriction state that restricts sliding movement with respect to the base, and the guide portion along the guide portion. Provided with a slide switching mechanism that can switch between a movement allowable state that allows slide movement, and if the slide switching mechanism is detachable from the base when in the movement restricted state, By using it, it becomes possible to insert and remove from both ends of the base, and the attachment / detachment operation can be performed relatively easily.

  Moreover, the furniture with a top plate according to the present invention comprises a base, the above-mentioned support body supported by the base, and a top board supported by the support body so as to be horizontally rotatable. To do.

  As described above, according to the present invention, since the turning mechanism is accommodated in the internal space of the frame body, the frame body directly receives the load of the top plate, and a good support state of the top plate can be maintained. . In addition, it is a rugged frame structure that can be attached to and detached from the base. It is possible to select from a mode in which a single support is supported, a mode in which a plurality of supports are supported, or a mode in which all the supports are removed from the base. The number of objects can be increased or decreased as appropriate, and the versatility and practicality become rich.

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

  The support 4 according to this embodiment is applied to the desk 1 shown in FIG.

  As shown in FIGS. 1 and 2, the desk 1 includes a base 2 that extends in the horizontal direction, a base support 3 that supports the base 2, and a support that is slidably supported along the base 2. 4, a top plate 5 having one end supported by the support 4 (corresponding to the “supported object” in the present application), and a leg 6 that supports the other end of the top plate 5 and is grounded on the floor surface. It is provided. 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 according to the present invention, and cannot be slid relative to the base 2.

  As shown in FIGS. 1 and 3 and the like, the base 2 has a substantially quadrangular prism shape extending substantially linearly. Rail groove that functions as a top plate guide portion (corresponding to the “guide portion” of the present invention) for guiding the movement of the support 4 to a pair of upstanding surface portions 2A facing each other along the longitudinal direction of the base 2 21 and 22 are provided. 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 23 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 rail groove 23. 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. Further, end caps 2C are detachably attached to both ends of the base 2 (see FIG. 1; in the drawings other than FIG. 1 (FIG. 3, etc.), the base 2 with the end cap 2C removed is attached. Shown).

  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.

  As shown in FIGS. 2 and 3, the support body 4 allows the frame body 4 </ b> A disposed on the lower surface side of the top plate 5, the movement restriction state for restricting the sliding movement with respect to the base 2, and the sliding movement with respect to the base 2. The slide switching mechanism 4B that can be switched between the movement-permitted states and the swivel that can be switched between the swivel-restricted state that restricts the horizontal turn of the top plate 5 and the swivel-permitted state that allows the top plate 5 to turn horizontally. The switching mechanism 4C includes a switching operation interlocking mechanism 4D that interlocks the switching operation of the slide switching mechanism 4B and the switching operation of the turning switching mechanism 4C. In the following description, the base 2 side of the support body 4 is the rear, and the opposite side (the anti-base 2 side) is the front.

  As shown in FIGS. 4 and 5, the frame body 4 </ b> A includes a pair of opposed frames 4 </ b> A <b> 1 that are substantially orthogonal to the longitudinal direction of the base 2 and are opposed to each other while being supported by the base 2, and the distal end side of the opposed frame 4 </ b> A <b> 1. The front frame 4A2 positioned on the rear frame 4A3 and the rear frame 4A3 positioned on the rear end side of the opposing frame 4A1 are integrally formed in a square shape in a plan view. The frame body 4A has an internal space surrounded by the frames 4A1, 4A2, and 4A3. In the present embodiment, the opposing frame 4A1 and the front frame 4A2 are connected by bolting or the like via the corner connector 4A4. As shown in FIG. 5, the relative position between the front frame 4A2 and the counter frame 4A1 is set so that the upper surface portion of the front frame 4A2 is at a position where the upper surface portion of the counter frame 4A1 sinks by a predetermined dimension. Therefore, the spacer 4A41 is provided on the upper surface of the corner connector 4A4 disposed in the internal space of the facing frame 4A1. Each opposed frame 4A1 is supported by a opposed frame bracket 4A5. Each opposing frame bracket 4A5 is obtained by integrally assembling a core member 4A52 by welding or the like inside a pair of left and right half members 4A51. Each half member 4A51 is provided with an engagement claw 4A511 that can be engaged with an engagement hole (not shown) formed in the opposed frame 4A1 at the upper end portion on the rear edge side, and will be described later at a substantially central portion in the height direction of the rear edge portion. A rear frame main body fitting portion 4A512 into which the rear frame main body 4A31 can be fitted is provided (see FIG. 5). Then, the engaging claws 4A511 are engaged with the engaging holes of the opposing frame 4A1, and the horizontal piece provided at the upper end of the core member 4A52 is bolted in a state where it is applied to the lower surface of the opposing frame 4A1. The opposing frame 4A1 and the opposing frame bracket 4A5 are assembled together.

  The rear frame 4A3 includes a rear frame main body 4A31 that can be fitted into the rear frame main body fitting portion 4A512 of the half member 4A51, and an operation lever that is integrally assembled with the rear frame main body 4A31 and holds an operation lever 4D2 described later. The holding body 4A32 is provided.

  The rear frame body 4A31 has a longitudinal dimension larger than the distance between the outward surfaces of the pair of opposed frames 4A1, and faces rearward from the rising edge 4A311 and the upper or lower edge of the rising piece 4A311. And an upper piece 4A312 and a lower piece 4A313 which are substantially parallel to each other. In the present embodiment, the upright pieces 4A311, the upper piece 4A312 and the lower piece 4A313 are formed by bending a single steel plate. The upper piece 4A312 is provided with an outlet accommodating portion 4A312a that can accommodate the outlet device C, and an upper contact member support portion 4A312b that supports an upper contact member 4B1 described later. In this embodiment, upper contact body support portions 4A312b are provided at both end portions of the upper piece 4A312, and further upward from the rear edge of the region of the upper piece 4A312 where the upper contact body support portions 4A312b are provided. A rising portion 4A312c extending toward is provided (see FIG. 5). Further, link shaft insertion holes 4A31a into which link shafts 4B7 described later can be inserted are formed at positions corresponding to the upper piece 4A312 and the lower piece 4A313, respectively. In this embodiment, the rear frame main body reinforcing body 4A33 is interposed between the upper piece 4A312 and the lower piece 4A313, and the rear frame main body reinforcing body 4A33 prevents deformation of the rear frame main body 4A31.

  The operation lever holding body 4A32 has a longitudinal dimension that is substantially the same as or slightly smaller than the distance between the inward surfaces of the pair of opposed frames 4A1, and overlaps with the standing piece 4A311 of the rear frame body 4A31 along the front-rear direction. The upright piece 4A321 can be provided, and the upper piece 4A322 and the lower piece 4A323 that extend forward from the upper edge portion or the lower edge portion of the upright piece 4A321 and are substantially parallel to each other are provided. In the present embodiment, the upright pieces 4A321, the upper pieces 4A322, and the lower pieces 4A323 are formed by bending a single steel plate. The height of the upright piece 4A321 is set to be larger than the overall length of the opposed frame 4A1 and the opposed frame bracket 4A5 assembled to each other. The upper piece 4A322 extends forward from substantially the entire upper edge portion of the upright piece 4A321, and further, the front end portion thereof is bent downward from the region excluding the substantially central portion. That is, the upper piece 4A322 has a front extending portion 4A322a that extends further forward than the other portions at the substantially central portion in the longitudinal direction. The lower piece 4A323 extends forward from a substantially central portion of the lower edge of the upright piece 4A321, and its extension dimension is set smaller than the extension dimension of the upper piece 4A322. The operation lever holder 4A32 and the rear frame body 4A31 are integrally assembled by bolting or welding in a state where the upright piece 4A321 is applied to the upright piece 4A311 of the rear frame body 4A31.

  In the present embodiment, the operation lever holder reinforcement frame 4A34 is provided at the front end portion of the upper piece 4A322 of the operation lever holder 4A32. The longitudinal dimension of the operating lever holder reinforcing frame 4A34 is set to be substantially the same as the longitudinal dimension of the operating lever holder 4A32. A retractable body pressing frame 4A35 (corresponding to the “retractable body pressing portion” of the present invention) protruding forward is provided at a substantially central portion in the longitudinal direction of the operation lever holder reinforcing frame 4A34. In the present embodiment, the operating lever holder reinforcing frame 4A34 and the retractor holding frame 4A35 are integrally rigidly connected by welding or the like. The retractor holding frame 4A35 is positioned in the internal space 4AS of the frame body 4A. Then, the upper surface portion of the retractor holding frame 4A35 is brought into contact with the front extending portion 4A322a provided on the upper piece 4A322 of the operation lever holder 4A32, so that the retractor pressing frame 4A35 is pressed against the force from below. An effective strength can be exhibited. The opposing frame 4A1, the front frame 4A2, the operation lever holder reinforcement frame 4A34, and the retractor holding frame 4A35 are each in the shape of a square pipe.

  In this manner, the frame body 4A formed by connecting the frames 4A1, 4A2, and 4A3 to each other is provided with a plurality of priority support portions 4A6 that contact the lower surface of the top plate 5 with priority over other parts.

  Each priority support portion 4A6 is a pin-like one protruding upward from the upper surface portion of the frame body 4A. In the present embodiment, as will be described later, the top plate 5 can be swiveled horizontally with respect to the support 4, and the top plate 5 is at least mounted regardless of the turning angle of the top plate 5 with respect to the support 4. The attachment positions of the priority support portions 4A6 are set so that a plurality of points can be supported. Among the priority support portions 4A6, at least two priority support portions 4A6 are set at equal distances from the turning shaft 5a of the top plate 5 (see FIG. 2). In the present embodiment, a priority support portion 4A6 is provided in each of the front end side region and the rear end side region of each opposing frame 4A1, and the top plate 5 is set so that a plurality of points can be supported by these four priority support portions 4A6. ing. Each priority support portion 4A6 provided in the front end side region of each counter frame 4A1 is provided at a position that is equidistant from the turning shaft 5a of the top plate 5, and each priority support provided in the rear end side region of each counter frame 4A1. The portion 4A6 is provided at a position that is equidistant from the turning shaft 5a of the top plate 5. Each priority support portion 4A6 is an integral product made of a material having excellent rigidity (POM: polyacetal in the present embodiment), and the upper surface portion of the frame body 4A using a bolt inserted into a bolt insertion hole formed in the center portion. (See FIG. 5).

  On the other hand, as shown in FIGS. 2, 3, 6, and 7, the slide switching mechanism 4 </ b> B includes an upper contact body 4 </ b> B <b> 1 that can contact the opening side standing wall 21 a of the upper rail groove 21, and a lower side The lower contact body 4B2 that can contact the rear side standing wall 22b of the rail groove 22, the upper rolling body 4B3 that can contact the opening side standing wall 21a of the upper rail groove 21, and the rear side of the lower rail groove 22 The lower rolling element 4B4 that can be in contact with the side upright wall 22b, the horizontal turning upper link 4B5 provided with the upper rolling element 4B3 at the tip, and the lower rolling element 4B4 provided at the tip. The lower link 4B6 is provided, and can be switched between the movement restricted state and the movement allowed state using the rotation of the links 4B5, 4B6.

  The upper contact body 4B1 is supported by an upper contact body support portion 4A312b provided on the upper piece 4A312 of the rear frame body 4A31, and is made of a material having excellent rigidity (in this embodiment, SS: general structure). It is an integrally formed product made of rolled steel. In the present embodiment, as the upper contact body 4B1, as shown in FIG. 8 (FIG. 8A and FIG. 8B are a plan view and a side view of the upper contact body 4B1, respectively) In addition, a device provided with an upper protruding portion 4B12 protruding upward from the rear end portion of the horizontal portion 4B11 is applied. The upper contact body 4B1 is fixed to the upper piece 4A312 of the rear frame body 4A31 by bolting or the like in a state where the upper contact body 4B1 is placed on the upper contact body support portion 4A312b. In this fixed state, the rear surface portion of the upper protruding portion 4B12 is in contact with or close to the rising portion 4A312c of the upper piece 4A312 (see FIG. 7).

  The lower-side contact body 4B2 is formed from a material having excellent rigidity (POM: polyacetal in this embodiment), and has a substantially cylindrical shape as shown in FIG. 9, and moves forward and backward with respect to the frame body 4A. It is attached to the tip of the possible advance / retreat member 4B21 (see FIGS. 5 and 7). In the present embodiment, an adjuster bolt that can be advanced and retracted by a screw feeding action is applied as the advance and retract member 4B21. The advancing / retreating member 4B21 is advancing / retreating member receiver 4B22 fixed to the lower piece 4A313 of the rear frame body 4A31 (see FIGS. 6 and 10; FIGS. 10 (a), (b), and (c) are respectively advancing / retreating member receivers 4B22. A lower abutting body holding portion 4B211 that can hold the lower side abutting body 4B2 in a press-fitted state, and is provided with a flat-blade screwdriver. An operation receiving unit 4B212 that receives an operation by a jig such as is provided at the base end.

  The upper side rolling element 4B3 and the lower side rolling element 4B4 are each rotatable about a vertical axis, and in this embodiment, a roller is applied as each of the rolling elements 4B3, 4B4.

  The upper side rolling element 4B3 and the lower side rolling element 4B4 are rotatably attached to the tip portions of the upper side link 4B5 and the lower side link 4B6, respectively, and each rolling element is utilized by using the rotation of each link 4B5, 4B6. 4B3, 4B4 has priority over the abutting bodies 4B1, 4B2 in contact with the upright walls 21a, 22b of the rail grooves 21, 22, and the rolling elements with respect to the abutting bodies 4B1, 4B2. By moving 4B3 and 4B4 relatively, the contact state between each contact body 4B1 and 4B2 and the upright walls 21a and 22b of each rail groove 21 and 22 is released, and each rolling element 4B3 and 4B4 is moved to each rail groove. It is possible to switch between the movement-permitted states attached to the upright walls 21a and 22b of 21 and 22.

  In this embodiment, the upper side rolling element 4B3, the lower side link 4B6, and the link axis 4B7 that is a common axis of these links 4B5 and 4B6 are used to move the upper side rolling element 4B3 and the lower side rolling element. A synchronization mechanism 4E that synchronizes the movement of 4B4 is configured (see FIG. 6).

  The upper side link 4B5 and the lower side link 4B6 are front views in a state in which the upper side link 4B5 and the lower side link 4B6 are assembled via a reinforcing link 4B8 described later. (B) and (c) are respectively an arrow view in the x direction and an arrow view in the y direction of (a)), and the front end portions 4B51, 4B61 and the base end portions 4B52, 4B62 are substantially L in plan view. They are connected by character-shaped connecting portions 4B53 and 4B63. The distal end portion 4B51 of the upper link 4B5 extends outward, and a link shaft insertion hole 4B54 into which the link shaft 4B7 can be inserted is formed in the vicinity of the boundary between the distal end portion 4B51 and the connection portion 4B53. On the other hand, the distal end portion 4B61 of the lower link 4B6 extends inward, and a link shaft insertion hole 4B64 into which the link shaft 4B7 can be inserted is formed in the vicinity of the boundary between the distal end portion 4B61 and the connecting portion 4B63. . Each of the links 4B5 and 4B6 includes stepped portions 4B55 and 4B65 provided at the boundary between the base end portions 4B52 and 4B62 and the connection portions 4B53 and 4B63, and an upper side link pressing rolling element 4D5 described later on the base end portions 4B52 and 4B62. The recesses 4B56 and 4B66 into which the lower link pressing rolling elements 4D6 can be fitted are formed. Of the upper link 4B5, a region in the vicinity of the portion where the link shaft insertion hole 4B54 is formed is placed on the upper piece 4A312 of the rear frame body 4A31 (see FIG. 6).

  The link shaft 4B7 includes the link shaft insertion holes 4B54 and 4B64 formed in the upper link 4B5 and the lower link 4B6, and the link shaft insertion holes 4A31a formed in the upper piece 4A312 and the lower piece 4A313 of the rear frame body 4A31. Can be inserted continuously. A nut is screwed to the tip of the link shaft 4B7 through a washer.

  In the present embodiment, the reinforcing link 4B8 is interposed between the upper link 4B5 and the lower link 4B6. The reinforcing link 4B8 is interposed between the upper link 4B5 and the lower link 4B6 in a standing posture. The links 4B5, 4B6 and the reinforcing links 4B8 are assembled by engaging the protrusions 4B81 of the reinforcing links 4B8 with the mounting holes 4B57, 4B67 provided in the connecting portions 4B53, 4B63 of the links 4B5, 4B6. be able to.

  As shown in FIG. 6, in the assembled state in which the upper side link 4B5 and the lower side link 4B6 are opposed to each other in the height direction via the reinforcing link 4B8, the distal end portion 4B51 of the upper side link 4B5 is the lower side link. It is positioned on the outer side of the tip 4B61 of 4B6. That is, in the present embodiment, the upper side link is formed in one region (specifically, the outer region) with a virtual straight line L passing through the center of the link shaft 4B7 and substantially orthogonal to the slide movement direction as a boundary. The front end 4B51 of 4B5 is positioned, and the front end 4B61 of the lower link 4B6 is positioned in the other region (specifically, the inner region). As a result, when a force for rotating the upper link 4B5 and the lower link 4B6 in the positive direction about the link shaft 4B7 is applied, the upper rolling element 4B3 provided at the tip portion 4B51 of the upper link 4B5. Moves toward the opening side upright wall 21a of the upper side rail groove 21, and the lower side rolling element 4B4 provided at the tip 4B61 of the lower side link 4B6 faces the rear side upstanding wall 22b of the lower side rail groove 22. On the other hand, when a force to rotate the upper link 4B5 and the lower link 4B6 in the reverse direction about the link shaft 4B7 is applied, the upper side provided at the tip portion 4B51 of the upper link 4B5 The rolling element 4B3 moves toward the direction away from the opening-side standing wall 21a of the upper rail groove 21, and is provided at the distal end portion 4B61 of the lower link 4B6. Lower rolling member 4B4 is moved in a direction away from the deeper-side upright wall 22b of the lower rail groove 22. With the configuration as described above, the movement of the upper rolling element 4B3 and the movement of the lower rolling element 4B4 accompanying the switching operation of the slide switching mechanism 4B can be synchronized.

  The support body 4 according to the present embodiment is provided with the slide switching mechanism 4B having such a configuration as a pair at positions separated along the slide movement direction, and interlocks the switching operation between the pair of slide switching mechanisms 4B. A slide switching interlocking mechanism 4F is provided.

  As shown in FIG. 2, the slide switching interlocking mechanism 4F includes a common link pressing body 4D1 that can press the base end portions 4B52 and 4B62 of the links 4B5 and 4B6 of the slide switching mechanisms 4B, and performs a predetermined operation. By operating the link pressing body 4D1 based on the force, the links 4B5 and 4B6 of the slide switching mechanisms 4B are turned around the link shaft 4B7, and the rolling elements provided at the end portions 4B51 and 4B61 of the links 4B5 and 4B6. 4B3 and 4B4 are moved simultaneously or substantially simultaneously. In this embodiment, as shown in FIG. 12, the base ends 4B52 and 4B62 of the links 4B5 and 4B6 of one slide switching mechanism 4B and the base ends of the links 4B5 and 4B6 of the other slide switching mechanism 4B. The base ends of the links 4B5 and 4B6 in which the portions 4B52 and 4B62 are staggered in the height direction using the stepped portions 4B55 and 4B65, respectively, and the link pressing body 4D1 is overlapped in the height direction. 4B52 and 4B62 can be pressed simultaneously. Therefore, as shown in the figure, the base end portions 4B52 and 4B62 of the links 4B5 and 4B6 of one slide switching mechanism 4B are set to be positioned relatively above the connection portions 4B53 and 4B63, and the other The base end portions 4B52 and 4B62 of the links 4B5 and 4B6 of the slide switching mechanism 4B are set so as to be positioned relatively below the connection portions 4B53 and 4B63.

  As shown in FIG. 13 (the figure (a), (b) is a plan view and a side view of the link pressing body 4D1, respectively), the link pressing body 4D1 is connected to the upper side link 4B5 of each slide switching mechanism 4B. An upper side link pressing rolling element 4D5 capable of pressing the base end part 4B52 and a lower side link pressing rolling element 4D6 capable of pressing the base end part 4B62 of the lower side link 4B6 of each slide switching mechanism 4B are provided. Details will be described later.

  The support body 4 according to the present embodiment supports the top plate 5 so that the top plate 5 can be turned horizontally, a turning restriction state for restricting the horizontal turning of the top plate 5, and a turning permission state for allowing the top plate 5 to turn horizontally. 4C is provided with a turning switching mechanism 4C that can be switched between.

  Here, the top plate 5 will be described.

  The top plate 5 includes, as shown in FIGS. 1 to 3 and the like (note that the top plate 5 is indicated by an imaginary line in FIG. 2), A turning mechanism 52 for horizontally turning the plate body 51 and a turning stopper disk 53 provided on the lower surface of the top plate body 51 are provided. In the following description, in the state where the longitudinal direction of the top plate 5 is substantially orthogonal to the longitudinal direction of the base 2, the base 2 side of the top plate 5 is the rear, and the opposite side (the anti-base 2 side) is the front. To do.

  The top plate main body 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. A planar view shape of the rotation base end side (rear end side) of the top plate body 51 is set to a substantially semicircular arc shape centering on the turning shaft 5 a of the top plate body 51. The maximum longitudinal dimension of the top plate body 51 is set to be substantially the same as or slightly smaller than the longitudinal dimension of the base 2.

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

  The turntable 521 is a known one using, for example, a thrust bearing.

  The turntable support 522 is a pair of a turntable support body 5221 that can hold the turntable 521 with the top plate body 51 so as to be pivotable, and a pair of suspension support bases 5221 that are suspended downward from both side edges of the turntable support body 5221. The hinge shaft support piece 5222 is provided. In the present embodiment, the turntable receiving body 5221 and the hinge shaft support piece 5222 are formed by bending a single steel plate. A hinge shaft support hole into which the hinge shaft H1 can be inserted is formed in the hinge shaft support piece 5222. In the present embodiment, a round hole-like hinge shaft support hole is formed in the vicinity of the front end portion of the hinge shaft support piece 5222.

  The turning stopper disc 53 functions as the “pinch target portion” of the present invention, and is centered on the turning shaft 5a of the top plate 5 and the same or slightly larger than the turning angle of the top plate 5 that can be turned horizontally. It has a substantially annular shape in plan view with corners. In this embodiment, since the top plate 5 is capable of turning about 180 degrees, the turning stopper disk 53 is applied with a center angle of 180 degrees or slightly larger than 180 degrees. Specifically, as shown in FIG. 14 (FIG. 14A is a plan view of the turning stopper disk 53 and FIG. 14B is a sectional view taken along line xx of FIG. 14A), the top plate A substantially semi-annular inner stopper disk 531 attached to the lower surface side of the main body 51 by bolting or the like, a standing stopper disk 532 arranged in a standing posture along the outer edge of the inner stopper disk 531, and an inner stopper disk 5 and an outer stopper disk 533 disposed along the lower edge of the standing stopper disk 532. These stopper disks 531, 532, and 533 are integrally rigidly connected by spot welding or the like. ing. Such a turning stopper disc 53 is fixed to the lower surface portion in the rear half region of the top plate body 51 by bolting or the like. In addition, the diameter of the turning stopper disk 53 is set larger than the diameter of the turning table 521 so that the turning table 521 and the turning stopper disk 53 do not interfere with each other (see FIG. 2).

  Such a top plate 5 is connected to the support body 4 via the hinge mechanism H so that one end portion (front end portion) is supported by the support body 4 and the other end portion (rear end portion) is connected to the leg body 6. I support it. In the present embodiment, the leg body 6 is provided with a leg body 61 and a movable body 62 (a caster in the illustrated example) provided at the lower end of the leg body 61.

  2 and 3, the hinge mechanism H includes a hinge shaft support piece 5222 of the rotary base 522, a hinge bearing body 4A7 provided on the frame body 4A of the support body 4, and a hinge shaft H1. It is a thing.

  As shown in FIGS. 2 to 5, the hinge bearing body 4A7 is provided on the inward surface portion of the front frame 4A2 in the frame body 4A. The hinge bearing body 4A7 includes a standing piece 4A71 that is in contact with the inward surface portion of the front frame 4A2, and a pair of facing pieces 4A72 that extend rearward from both side ends of the standing piece 4A71 and face each other. A hinge shaft insertion hole 4A72a into which the hinge shaft H1 can be inserted is formed in the piece 4A72 (see FIG. 5). In this embodiment, a long hole extending in the height direction is applied as each hinge shaft insertion hole 4A72a.

  The hinge shaft support hole formed in the hinge shaft support piece 5222 of the rotary base 522 and the hinge shaft insertion hole 4A72a formed in the opposed piece 4A72 of the hinge bearing body 4A7 are communicated with each other. By inserting the hinge shaft H1 into the holes 5222c and 4A72a, the top plate 5 and the support body 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 region by the priority support portion 4A6 (see FIGS. 2 and 3). That is, in the present embodiment, the hinge mechanism H is provided on the front side (on the side opposite to the base 2) from the support region by the priority support portion 4A6. Further, in a state where the top plate 5 and the support body 4 are connected via the hinge mechanism H, the turning mechanism 52 provided on the lower surface of the top plate body 51 is accommodated in the internal space 4AS of the frame body 4A.

  Next, the turning switching mechanism 4C provided on the support 4 will be described.

  As shown in FIG. 15, the turning switching mechanism 4 </ b> C includes a swivelable position where the swiveling stopper disk 53 (more specifically, the outer stopper disk 533) provided on the lower surface of the top plate body 51 can be swallowed, A retractable body 4C1 that is movable between the retracted position where the retracted state is released is provided, and the revolving stopper disk 53 is retracted downward by moving the retractable body 4C1 from the retracted position to the retractable position. In addition, a turning regulation state in which the lower surface of the top plate body 51 (corresponding to “the lower surface of the top plate 5” of the present invention) is brought into contact with or pressed against the priority support portion 4A6 to restrict horizontal turning of the top plate 5 and a retracted state are provided. By releasing, it is possible to switch between the turning-permitted states that allow the top plate 5 to turn horizontally.

  The retractable body 4C1 is shown in FIG. 16 (FIGS. (A), (b), (c), and (d) are respectively a plan view of the retractable body 4C1, a cross-sectional view taken along line xx of FIG. As shown in the drawing, the retractor body 4C11 that can be in direct contact or pressure contact with the turning stopper disk 53, and the retractor pressing frame 4A35 in contact with or in pressure contact with the retractor pressing frame 4A35 of the frame body 4A. 4C12, and a base portion 4C13 for connecting the retractable body 4C11 and the retractable body 4C12. In the present embodiment, an integrated product made of a material having excellent rigidity (POM: polyacetal in the present embodiment) is applied as the retractable body 4C1.

  The retractable body 4C11 is provided with an upward extension 4C111 extending upward from the front end of the base portion 4C13 and an insertion claw 4C112 extending forward from the upper end of the upward extension 4C111. . Further, in order to smoothly engage the retractable body 4C1 with respect to the turning stopper disk 53, an indentation guide portion 4C11a having a partially arcuate downward shape when viewed from the front is provided on the lower surface portion of the intrusion claw 4C112. c)).

  The intruder 4C12 protrudes upward from a portion of the base portion 4C13 on the rear side of the retractable body 4C11, and its height dimension is in contact with the retractable body holding frame 4A35 of the frame body 4A. Or it is set to the dimension which can be pressed. Further, in order to make the retracting operation of the retracting body 4C12 with respect to the retracting body holding frame 4A35 smooth, a retracting guide part 4C12a having a partially arcuate upward shape when viewed from the front is provided at the upper end (see FIG. 4D). .

  The base portion 4C13 is formed with an operation lever shaft insertion hole 4C13a into which an operation lever shaft 4D3 described later can be inserted.

  The support body 4 according to the present embodiment includes a switching operation interlocking mechanism 4D that interlocks the switching operation of the slide switching mechanism 4B and the switching operation of the turning switching mechanism 4C.

  As shown in FIGS. 2, 3 and 15, the switching operation interlocking mechanism 4D is integrally attached to the link pressing body 4D1, the link pressing body 4D1 and the retracting body 4C1, and the operation lever shaft 4D3 is the center. This is provided with an operation lever 4D2 that can turn horizontally.

  The link pressing body 4D1 is in contact with or in contact with the vicinity of the base end portions 4B52 and 4B62 of the links 4B5 and 4B6 and does not press the links 4B5 and 4B6, and the base end portions of the links 4B5 and 4B6. 4B52 and 4B62 can be moved between the pressing positions where the area near the pressing area can be pressed. As shown in FIG. 13, the link pressing body 4D1 is provided with a support portion 4D11 for supporting the operating lever 4D2 and the retractable body 4C1 at one end portion (front end portion), and the tip end portion at each other end portion (rear end portion). The link 4B5, 4B6 is substantially Y-shaped in plan view provided with a pressing body 4D12 that forms a bifurcated pair that can be directly contacted or attached to different parts in the vicinity of the base ends 4B52, 4B62 of the links 4B5, 4B6.

  Each pressing body 4D12 has a first rolling element holding portion that rotatably holds an upper link pressing rolling element 4D5 that can press the base end portion 4B52 of the upper link 4B5 of each slide switching mechanism 4B at the distal end. 4D121 and a second rolling element holding portion 4D122 that rotatably holds the lower link pressing rolling element 4D6 that can press the base end portion 4B62 of the lower link 4B6 of each slide switching mechanism 4B in the height direction with a predetermined dimension. The link pressing rolling elements 4D5 and 4D6 are attached to the roller holding portions 4D121 and 4D122 via the link pressing rolling element shafts 4D7, respectively. In the present embodiment, the link pressing rolling elements 4D5 and 4D6 are restricted from vertically moving the links 4B5 and 4B6 and the link pressing rolling elements 4D5 and 4D6 and the links 4B5 and 4B6 are attached or pressed. The collars 4D51 and 4D61 that can be maintained are provided. Further, an operation lever shaft insertion hole 4D1a into which the operation lever shaft 4D3 can be inserted is formed at a branch point of the pressing body 4D12.

  As shown in FIG. 17 (FIGS. 17A and 17B are a plan view and a side view of the operation lever 4D2, respectively, the operation lever 4D2 is a straight line that can be gripped by the user at one end (front end). The handle portion 4D21 is shaped like a plate, and the supported portion 4D22 supported by the support portion 4D11 of the pressing body 4D12 is provided at the other end portion (rear end portion). The supported portion 4D22 has a substantially Y shape in plan view substantially similar to the pressing body 4D12, and has an operation lever shaft insertion hole 4D2a into which the operation lever shaft 4D3 can be inserted at a branch point.

  Then, the retractable body 4C1 of the turning switching mechanism 4C is placed on the supported portion 4D22 of the operation lever 4D2, and the link pressing body 4D1, the operation lever 4D2, and the retractable body 4C1 are fastened with a common bolt and the operation lever is held. Operation lever shaft insertion holes formed in the upper piece 4A322, lower piece 4A323, and operation lever holder reinforcement frame 4A34 of the body 4A32, and operation lever shafts formed in the link pressing body 4D1, the operation lever 4D2, and the retracting body 4C1, respectively. The insertion switching holes 4D1a, 4D2a, and 4C13a are made to coincide with each other, and a single operation lever shaft 4D3 is continuously inserted into each of these insertion holes, whereby the turning switching mechanism 4C and the switching operation interlocking mechanism 4D are integrated with the frame body 4A. (See FIG. 15). In this assembled state, the retractable body 4C1 is fixed to the upper surface side of the operation lever 4D2, and the link pressing body 4D1 is fixed to the lower surface side of the operation lever 4D2. In this assembled state, the link pressing body 4D1 and the retracting body 4C1 together with the operation lever 4D2 can be turned horizontally around the operation lever shaft 4D3.

  Next, the usage method of this desk 1 and operation | movement and an effect | action of each mechanism are demonstrated.

  First, during normal use, in order to restrict the sliding movement of the support 4 and the turning of the top plate 5, each slide switching mechanism 4B is set in a movement restricted state and the turning switching mechanism 4C is set in a turning restricted state.

  When each slide switching mechanism 4B is in the movement restricted state, as shown in FIGS. 3 and 7, the upper contact body 4B1 (specifically, the front surface of the upper protrusion 4B12) is given priority over the upper rolling body 4B3. Part) abuts against the opening side standing wall 21a of the upper rail groove 21, and the lower side abutting body 4B2 abuts against the rear side standing wall 22b of the lower rail groove 22 in preference to the lower rolling body 4B4. As a result, the sliding movement of the support 4 with respect to the base 2 and, consequently, the sliding movement of the top plate 5 with respect to the base 2 are restricted.

  In the present embodiment, the lower-side contact body 4B2 is attached to the distal end portion of the advance / retreat member 4B21 that can advance and retreat with respect to the frame body 4A as described above, and the slide switching mechanism 4B controls the movement. In this state, a jig such as a flat-blade screwdriver is inserted into the operation receiving portion 4B212 of the advance / retreat member 4B21 to apply a predetermined operation force, thereby moving the advance / retreat member 4B21 forward and backward. It is possible to adjust the relative position of the side contact body 4B2. As a result, the relative angle of the support 4 with respect to the base 2 can be finely adjusted, and the top plate 5 supported by the support 4 can be set to have a substantially horizontal posture in a normal use state. That is, the lower side contact body 4B2 and the advance / retreat member 4B21 constitute a relative angle adjustment mechanism capable of adjusting the relative angle of the support body 4 with respect to the base 2.

  Further, when the turning switching mechanism 4C is in the turning restricted state, as shown in FIG. 3 and FIG. 15, the retractable body 4C1 positioned at the swivelable position is moved to the outer stopper disk 53 of the turning stopper disk 53 by the swaging claw 4C112. While gripping 533 and pulling it downward, the lower surface of the top plate main body 51 is supported at a plurality of points by the respective priority support portions 4A6. As a result, horizontal turning of the top plate 5 relative to the support 4 is restricted. In this way, when each slide switching mechanism 4B is in the movement restricted state and the turning switching mechanism 4C is in the turning restricted state, as shown in FIG. 2, the operation lever 4D2 of the switching operation interlocking mechanism 4D is connected to the handle portion 4D21. The link pressing body 4D1 of the switching operation interlocking mechanism 4D is positioned at a normal position whose longitudinal direction is substantially orthogonal to the longitudinal direction of the base 2, and the upper side link pressing rolling element 4D5 provided at the tip of each pressing body main body 4D12. And the lower link pressing rolling elements 4D6 are in contact with the proximal end portion 4B52 region of the upper link 4B5 or the proximal end portion 4B62 region of the lower link 4B6, and do not press the links 4B5, 4B6. It is positioned at the non-pressing position.

  On the other hand, when the relative position and relative angle of the top plate 5 with respect to the base 2 are changed, each slide switching mechanism 4B is switched from the movement restricted state to the movement permitted state, and the turning switching mechanism 4C is turned from the turning restricted state to the turn permitted state. It is necessary to switch to. In this case, the user holds the handle portion 4D21 of the operation lever 4D2 at the normal position, and applies an operation force to pull it forward (user side) regardless of the forward and reverse directions.

  Based on this operating force, the operating lever 4D2 horizontally turns in one of the forward and reverse directions (for example, clockwise direction) around the operating lever shaft 4D3 together with the link pressing body 4D1 and the retracting body 4C1 (see FIG. 18). Accordingly, the link pressing body 4D1 is provided with the upper side link pressing rolling element 4D5 and the lower side link pressing provided at the distal end portion of any one pressing body body 4D12 from the non-pressing position. The rolling elements 4D6 are respectively pressed against the proximal end portions 4B52 and 4B62 of the respective links 4B5 and 4B6 while being brought into contact with the proximal end portion 4B52 of the upper link 4B5 or the proximal end portion 4B62 of the lower link 4B6. Rotate to one pressing position. As the link pressing body 4D1 turns, the upper link 4B5 and the lower link 4B6 of each slide switching mechanism 4B whose base end portions 4B52 and 4B62 are pressed by the link pressing body 4D1 are linked to each other to link the link shaft 4B7. Rotate around the center. Then, as shown in FIGS. 18 to 20, the upper link 4B5 and the lower link 4B6 facing each other in the height direction in each slide switching mechanism 4B rotate about a common link shaft 4B7, thereby The upper rolling element 4B3 provided at the distal end portion 4B51 of the side link 4B5 moves toward the opening side standing wall 21a of the upper rail groove 21, and the lower rolling element 4B4 provided at the distal end portion 4B61 of the lower link 4B6. Moves toward the rear side standing wall 22b of the lower rail groove 22. As a result, each slide switching mechanism 4B releases the contact state of the upper contact body 4B1 with respect to the opening-side standing wall 21a of the upper rail groove 21 and moves the upper rolling element 4B3 to the opening side of the upper rail groove 21. The lower rolling body 4B4 is lifted to the rear side of the lower rail groove 22 by bringing the lower rolling body 4B4 into contact with the standing wall 21a and releasing the contact state of the lower side contact body 4B2 with the rear side standing wall 22b of the lower rail groove 22. The movement is allowed to be brought into contact with the wall 22b. Thereby, it becomes possible to slide the top plate 5 together with the support 4 with respect to the base 2, and the relative position of the top plate 5 with respect to the base 2 can be changed along the extending direction of the base 2. In the present embodiment, since the rail grooves 21 and 22 are formed from one end to the other end of the base 2, the slide switching mechanism 4 </ b> B slides and moves the support 4 in the movement-permitted state. Can be moved together with the top plate 5 to another adjacent base 2, or the support 4 can be removed from the base 2 together with the top plate 5. In other words, the support 4 once removed from the base 2 can be attached to the base 2 again using the rail grooves 21 and 22 by setting the slide switching mechanism 4B to the movement-permitted state. That's what it means.

  Further, the retractable body 4C1 of the turning switching mechanism 4C together with the operation lever 4D2 based on the operation force (the operation force grasping the handle portion 4D21 of the operation lever 4D2 and pulling it forward (user side) regardless of the forward or reverse direction). Also, in the internal space 4AS of the frame body 4A, the swivel movement is made from the swivelable position to a swivel release position where the swivel stopper disk 53 is released from the swivel state with respect to the outer stopper disk 533 (see FIG. 18). As a result, the turning switching mechanism 4C releases the swiveling stopper disc 53 from the retractable body 4C1 and enters a turning permission state in which the top plate 5 is allowed to turn horizontally, and the top plate 5 is placed horizontally around the turning shaft 5a. By turning, the posture in which the longitudinal direction of the top plate 5 is substantially orthogonal to the longitudinal direction of the base 2 (see FIG. 2), or the longitudinal direction of the top plate 5 is substantially parallel to the longitudinal direction of the base 2. (Refer to FIG. 21, and FIG. 21 shows the state where the operation lever 4D2 is positioned at the normal position.) The turning angle posture of the top plate 5 with respect to the base 2 can be appropriately selected. Further, when the turning switching mechanism 4C is in the turning allowable state, the top plate 5 can be rotated in the direction of lifting with respect to the support 4 using the hinge mechanism H.

  Even when a manipulation force for pulling the manipulation lever 4D2 in the normal position in the reverse direction (counterclockwise direction) is applied, as shown in FIG. 22, each slide switching mechanism is actuated by the switching operation interlocking mechanism 4D. 4B can be switched from the movement restricted state to the movement permitted state, and the turning switching mechanism 4C can be switched from the turning restricted state to the turn permitted state. That is, when the operation lever 4D2 is horizontally turned counterclockwise from the normal position, the link pressing body 4D1 and the retracting body 4C1 horizontally turn counterclockwise around the operation lever shaft 4D3 together with the operation lever 4D2. From the non-pressing position, the pressing body 4D1 moves the upper side link pressing rolling element 4D5 and the lower side link pressing rolling element 4D6 provided at the tip of the other pressing body body 4D12 of the paired pressing body bodies 4D12 upward. Turn to the second pressing position that presses the proximal end portion 4B52, 4B62 vicinity region of each link 4B5, 4B6 while being in contact with the proximal end portion 4B52 vicinity region of the side link 4B5 or the proximal end portion 4B62 vicinity region of the lower side link 4B6 Moving. Thereafter, the slide switching mechanism 4B is allowed to move by the same operation and action as described above, and the turning switching mechanism 4C is allowed to turn.

  On the other hand, when each slide switching mechanism 4B is switched from the movement-permitted state to the movement-restricted state, and when the turn switching mechanism 4C is switched from the turn-permitted state to the turn-restricted state, an operation force that returns the operation lever 4D2 to the normal position is applied.

  Based on this operating force, the operating lever 4D2 rotates horizontally with the link pressing body 4D1 and the retracting body 4C1 around the operating lever shaft 4D3 in the direction opposite to that during the switching operation. As a result, the link pressing body 4D1 pivots from the first pressing position or the second pressing position to the non-pressing position. Along with the turning movement of the link pressing body 4D1, the links 4B5 and 4B6 of the slide switching mechanisms 4B are interlocked to switch the slide switching mechanism 4B from the movement restricted state to the movement permitted state around the link shaft 4B7. Is rotated in the opposite direction, so that the upper rolling element 4B3 provided at the distal end portion 4B51 of the upper link 4B5 moves in a direction away from the opening-side standing wall 21a of the upper rail groove 21 and is moved downward. The lower rolling element 4B4 provided at the distal end portion 4B61 of the side link 4B6 moves in a direction away from the rear side standing wall 22b of the lower rail groove 22. As a result, the support 4 moves in the direction of sinking due to the weight of the support 4 itself and the weight of the top plate 5, and each slide switching mechanism 4 </ b> B moves to the opening side of the upper rail groove 21 as shown in FIG. 5. The contact state of the upper rolling element 4B3 with respect to the standing wall 21a is released, the upper contact body 4B1 is brought into contact with or pressed against the opening side standing wall 21a of the upper rail groove 21, and the lower side of the lower rail groove 22 is placed. The state where the lower rolling element 4B4 is brought into contact with the side upright wall 22b is released, and the lower side abutting body 4B2 is brought into contact with or pressed against the rear side upright wall 22b of the lower rail groove 22. Thereby, the sliding movement of the support body 4 with respect to the base 2 and by extension the top plate 5 is restricted. The rotation of the operation lever 4D2 at the time of the switching operation is such that the link pressing rolling bodies 4D5 and 4D6 provided on the link pressing body 4D1 are formed in the concave portions 4B56 and 4B62 formed on the base end portions 4B52 and 4B62 of the links 4B5 and 4B6, respectively. By fitting into 4B66 (see FIGS. 11 and 12), further rotation in the same direction is restricted.

  Further, on the basis of the operation force (operation force for returning the operation lever 4D2 to the normal position), the retractable body 4C1 of the turning switching mechanism 4C is also turned and moved from the retraction release position to the retraction possible position together with the operation lever 4D2. When the retractable body 4C1 is swung from the retracting position to the retractable position, the operation of the retracting guide portion 4C11a provided on the retracting claw 4C112 of the retractable body 4C11 is smoothly engaged with the revolving stopper disk 53. In addition, the operation of the retracting guide 4C12a provided in the retracting body 4C12 of the retracting body 4C1 can smoothly perform the retracting operation of the frame body 4A with respect to the retracting body pressing frame 4A35. . In the present embodiment, in the process of switching the turning switching mechanism 4C from the turning permission state to the turning restriction state, the submerged body 4C12 is brought into the lower part of the retracting body pressing frame 4A35 while being brought into contact with or pressed against the retracting body pressing frame 4A35. Accordingly, the retractable body 4C11 is pulled downward, and the turning stopper disk 53 can be retracted together with the retractable body 4C11. As a result, the top plate 5 integrally provided with the turning stopper disk 53 is also drawn downward, and the lower surface of the top plate body 51 is brought into pressure contact with the priority support portion 4A6, and a good support state of the top plate 5 is ensured. (See FIGS. 3 and 15). In this way, the turning switching mechanism 4C is switched from the turning permission state to the turning restriction state based on the operation force.

  When the turning switching mechanism 4 </ b> C is in the turning restricted state, the top plate 5 is in a state in which it cannot turn in the direction of lifting with respect to the support body 4 around the hinge axis H <b> 1 of the hinge mechanism H, as shown in FIG. 8. In the present embodiment, the slide switching mechanism 4B is provided with an auxiliary rolling element 4B9 that can rotate around a horizontal axis that can contact the bottom wall 21c of the upper rail groove 21 (see FIG. 7).

  As described above, the support body 4 according to the present embodiment includes the frame body 4 </ b> A having a substantially square shape in plan view and having the internal space 4 </ b> AS that can accommodate the turning mechanism 52 for turning the top plate 5. Compared with the case where 4 is flat, not only the support strength to the top plate 5 is remarkably improved by adopting the frame structure, but also the turning mechanism 52 is accommodated in the internal space 4AS of the frame body 4A. Therefore, a space corresponding to the height of the turning mechanism 52 is not formed between the upper surface of the support 4 and the lower surface of the top plate 5, and the impression that the top plate 5 is clearly floating from the support 4 is used. The stability of the support state can be grasped visually without giving to the person. Further, since the turning mechanism 52 is accommodated in the internal space 4AS of the frame body 4A, the frame body 4A is directly subjected to the load of the top plate 5, and a good support state of the top plate 5 can be maintained. Furthermore, since it is rugged and adopts a frame structure, it can be attached to and detached from the base 2. It is possible to select a mode in which a single support 4 is supported with respect to one base 2, a mode in which a plurality of supports 4 are supported, or a mode in which all the supports 4 are removed from the base 2. According to various layout changes, the number of the top plates 5 can be increased or decreased as appropriate, and the versatility is enhanced. In addition, since the frame structure has the internal space 4AS, it is possible to effectively reduce the weight, and it is possible to reduce the burden on the base 2 supporting the support body 4 as much as possible.

  In particular, since the frame body 4A includes a plurality of priority support portions 4A6 that come into contact with or press contact with the lower surface of the top plate 5 in preference to other parts, the load on the top plate 5 is assigned to each priority support portion. 4A6 can be dispersed. Furthermore, in this embodiment, since at least two priority support portions 4A6 among these plurality of priority support portions 4A6 are set at equal distances from the turning center (turning shaft 5a) of the top plate 5, at least the top plate 5 Each of the priority support portions 4A6 set at equal distances from the turning center (the turning shaft 5a) receives substantially the same load, and the top plate 5 can be supported in a more stable state.

  In addition, each priority support portion 4A6 can support the top plate 5 in a point, and the top plate 5 is supported by a plurality of priority support portions 4A6 at any turning angle that the top plate 5 can take. Therefore, a situation in which the support state of the top plate 5 is not deteriorated due to the turning angle does not occur, and the support can be supported in a stable state without rattling regardless of the turning angle of the top plate 5.

  In particular, since the priority support portion 4A6 is formed of a material having high rigidity, the priority support portion 4A6 is prevented from being deformed and contributes to an improvement in load resistance.

  Further, a retractable body 4C1 that is movable between a retractable position where the swivel stopper disk 53 provided integrally on the lower surface side of the top plate 5 can be inserted and a retractable position where the engaged state is released is provided. Since the turning switching mechanism 4C configured to be used is provided and the turning stopper disk 53 can be accommodated in the internal space 4AS of the frame body 4A, the turning stopper disk 53 is provided between the lower surface of the top plate 5 and the support body 4. There is no need to secure a dedicated installation space. Further, by pulling the turning stopper disc 53 downward by the turning switching mechanism 4C, the top plate 5 is also drawn downward together with the turning stopper disc 53, and the lower surface of the top plate 5 is brought into contact or pressure contact with the priority support portion 4A6. The top plate 5 and the support body 4 can be integrated with each other, and a good support state in which the load applied to the top plate 5 can be received by the support body 4 via the priority support portion 4A6 can be realized. . In this way, by switching the turning switching mechanism 4C from the turning permission state to the turning restriction state, it is possible to achieve both the brake against the turning of the top plate 5 and the improvement of the support state of the top plate 5.

  Further, since the moving area between the retractable position and the retracting position of the retractable body 4C1 is set in the internal space 4AS of the frame body 4A, the retracting is performed using the internal space 4AS of the frame body 4A. The body 4C1 can be smoothly moved between the retractable position and the retracting position, and it is not necessary to secure a separate movement space for the retractable body 4C1, thereby simplifying the structure. it can.

  When the retractable body 4C1 is capable of horizontally turning between the retractable position and the retractable position, and the frame body 4A moves the retractable body 4C1 from the retractable position to the retractable position. The retractable body 4C1 is provided with a retractable body pressing frame 4A35 that can contact or press against the retractable body 4C12 of the retractable body 4C1 and press the retractable body 4C1 downward. The entire retractable body 4C1 can be pulled downward by pressing the submerged body 4C12 downward with the pressing frame 4A35. The retractable body 4C1 pulls the turning stopper disk 53 downward, and thus the top plate 5 is pulled downward. Can be performed more accurately.

  In particular, since the retractable body 4C1 positioned at the retractable position is provided in or near the support area by the priority support portion 412 of the support body 4, the turning stopper disk 53 is moved downward by the retractable body 4C1. Along with the pull-in operation, at least the area of the top plate 5 in which the turning stopper disk 53 is provided and the vicinity of the area in which the turning stopper disk 3 is provided can be reliably brought into contact with or pressed against the priority support portion 4A6.

  Further, since the turning stopper disk 53 is substantially circular in a plan view and has a center angle that is the same as or slightly larger than the turning angle of the top plate 5 that can turn horizontally, with the turning shaft 5a of the top plate 5 as the center. It is possible to hold the turning stopper disk 53 by the retractable body 4C1 regardless of the turning angle of 5 and the top plate 5 can be firmly received.

  The base 2 is provided with rail grooves 21 and 22 extending continuously in a region extending from one end to the other end, a movement restriction state for restricting sliding movement with respect to the base 2, and the rail groove 21 with respect to the base 2. , 22 is provided with a slide switching mechanism 4B that can be switched between a movement allowable state that allows slide movement along the line 22, and is detachable from the base 2 when the slide switching mechanism 4B is in a movement restricted state. Therefore, it is possible to insert and remove the support body 4 from both ends of the base 2 using the rail grooves 21 and 22, and the attachment / detachment operation can be performed easily and accurately.

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

  For example, the frame body may have a substantially square shape in plan view, and may have any form in which the corner part is rounded or in a form in which the corner part is linear. In addition, all the frames constituting the frame body may be the same, and each frame may be a rectangular tube shape or a cylindrical tube shape, a solid rod shape or a column shape. .

  The turning mechanism may have any structure as long as it turns a support object such as a top plate.

  The specific structures of the turning switching mechanism and the slide switching mechanism of the support body may be changed as appropriate. For example, the retracting body of the turning switching mechanism has a horizontal axis between the retractable position and the retracting position. It may be movable around, movable forward or backward, or movable up and down.

  Further, the support may be provided with three or more slide switching mechanisms along the slide movement direction, or may be provided with a single slide switching mechanism. On the other hand, a plurality of turning switching mechanisms may be provided on a single support.

  In addition, as a guide portion that extends continuously from one end of the base to the other end, a projecting portion may be applied instead of the rail groove shown in the embodiment.

  One or three or more rail grooves whose bases are continuously open in a substantially horizontal direction may be formed. Further, a base that extends in a curved shape (circular curved shape or elliptical curved shape) or a base that extends while meandering may be applied.

  In addition, a mode in which a plurality of (for example, two end portions) of the top plate are supported by a plurality of (for example, two) support bodies supported by the same base, or a part of the top plate (for example, one end portion) It is also possible to adopt a mode in which the support is supported by the base and the other part (for example, the other end) of the top plate is supported by the support supported by the other base.

  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, in order to slide or turn the top plate, the top plate may be moved up to a position where the lower end of the leg rises from the floor surface. Moreover, as long as the top plate which is a support object which a support body supports is a comparatively small thing, it does not matter as a cantilever type (legless type) supported only by a support body. As the top plate, the shape in plan view is circular, elliptical, polygonal, L-shaped, T-shaped, rectangular (including square), or one end side is polygonal and the other end side is partially arcuate Various shapes, such as those forming the above, may be applied. Furthermore, instead of the top board, an armrest, a memo stand, or the like may be adopted as the support object.

  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 swivel stopper disk, for example, a downward projecting portion provided at a predetermined pitch or continuously on a virtual line corresponding to the swivel trajectory of the top plate is employed on the lower surface side of the top plate as a swallowing target portion. Also good.

  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 of each part is not limited to the above 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 figure which abbreviate | omits and partially shows the top view of the desk in which the slide switching mechanism and the turning switching mechanism are in a control state in the same embodiment. The figure which abbreviate | omits and partially shows the side view of the desk in which the slide switching mechanism and the turning switching mechanism are respectively in the regulation state in the same embodiment. The top view of the support body which concerns on the same embodiment. The side view of the support body which concerns on the same embodiment. The P area | region enlarged view of FIG. The principal part enlarged view of FIG. The figure which shows the upper side contact body which concerns on the same embodiment. The figure which shows the lower side contact body and advance / retreat member which concern on the same embodiment. The figure which shows the advance / retreat member receiver which concerns on the same embodiment. The figure which shows the assembly | attachment state of each link which concerns on the embodiment. The figure which shows the assembly | attachment state of the links of each switching mechanism which concerns on the embodiment. The figure which shows the link press body which concerns on the same embodiment. The figure which shows the rotation stopper disc which concerns on the same embodiment. Xx sectional view taken on the line of FIG. The figure which shows the retractable body which concerns on the same embodiment. The figure which shows the operation lever which concerns on the same embodiment. The figure which abbreviate | omits and partially shows the top view of the desk in which the slide switching mechanism and the turning switching mechanism are each in a permission state in the same embodiment. The Q area enlarged view of FIG. The figure which shows the principal part expansion corresponding to FIG. 7 in which the slide switching mechanism and the turning switching mechanism are each in an allowable state in the same embodiment. The figure which shows the one aspect | mode which swung the top plate in the same embodiment corresponding to FIG. The figure which abbreviate | omits and partially shows the top view of the desk in which the slide switching mechanism and the turning switching mechanism are each in a permission state in the same embodiment.

Explanation of symbols

1 ... Furniture with a top board (desk)
2 ... Base 21, 22 ... Guide part (upper rail groove, lower rail groove)
4 ... Support body 4A ... Frame body 4A35 ... Retractable body pressing part (Retractable body holding frame)
4A6 ... priority support part 4AS ... priority support part 4B ... slide switching mechanism 4C ... turning switching mechanism 4C1 ... retractor 4C12 ... sinking body 5 ... support object (top plate)
53 ... Pinching target part (turning stopper disk)

Claims (10)

A support body supported by a base in a state in which a support object such as a top plate is supported so as to be horizontally rotatable,
A support body comprising a substantially B-shaped frame body in plan view having an internal space capable of accommodating a turning mechanism for turning the support object, and is detachable from the base. . The frame body is provided with a plurality of priority support portions that are in contact with or pressed against the lower surface of the support object in preference to other parts,
The support body according to claim 1, wherein at least two priority support portions among the plurality of priority support portions are set at an equal distance from a turning center of the support object. Each of the priority support parts can support the object to be supported,
The support body according to claim 2, wherein the support object is supported at a plurality of points by the plurality of priority support portions at any turning angle that the support object can take. The support body according to claim 1, 2 or 3, wherein the priority support portion is formed of a material having high rigidity. A turning switching mechanism capable of switching between a turning restriction state for restricting horizontal turning of the support object and a turning permission state for allowing horizontal turning of the support object;
Between the swivelable position where the swivel switching mechanism can swallow the swallowing target portion provided integrally or integrally on the lower surface side of the support object and the swallowing release position where the swaging state has been released. A movable retractable body, and by moving the retractable body, the retractable object portion is retracted and the lower surface of the support object is brought into contact with a part of the frame body. It is possible to switch between a turning restriction state that restricts the horizontal turning of the support object by pressing and a turning permission state that allows the turning of the support object by releasing the pinching state. ,
The support body according to claim 1, 2, 3, or 4, wherein the insertion object portion can be accommodated in an internal space of the frame body. The support body according to claim 5, wherein a movement area between the retractable position and the retracting position of the retractable body is set in an internal space of the frame body. The retractable body is capable of horizontally turning between the retractable position and the retracting position;
When the frame body moves the retractable body from the retraction release position to the retractable position, a retractable body pressing portion that can contact or press against a part of the retractable body and press the retractable body downward. The support according to claim 5 or 6, wherein the support is provided. The base includes a guide portion that continuously extends in a region extending from one end to the other end;
A slide switching mechanism that is switchable between a movement restriction state that restricts slide movement relative to the base and a movement permission state that permits slide movement along the guide portion with respect to the base, and the slide switching mechanism includes: The support according to claim 1, 2, 3, 4, 5, 6, or 7, which is detachable from the base when in the movement restricted state. The support according to claim 1, 2, 3, 4, 5, 6, 7 or 8, wherein the support object is a top plate. A furniture with a top board, comprising: a base; a support body according to any one of claims 1 to 9 supported by the base; and a top board supported by the support body so as to be horizontally rotatable. .

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