JP2009028220A - Lift mechanism and storage furniture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lift mechanism capable of attach work of a bolt to a bracket smoothly and appropriately. <P>SOLUTION: The lift mechanism includes: a bracket XB which has a bolt insertion hole XB1a for allowing a screw part XA1 of a bolt XA and a flange part XA3 to insert and can hold the bolt XA rotatably; a stay XC having an internal thread XC31 with which the screw part XA1 of the bolt XA can be threadedly engaged; a first insertion hole XD11 which is placed in a gap formed between an operation part XA2 of the bolt XA and the flange part XA3 and allows the screw part XA1 and the flange part XA3 to insert; and a second insertion hole XD12 which allows only the screw part XA1 to insert. The mechanism also includes: a coming-off prevention member XD movable between a first connection position Y allowing the first insertion hole XD11 to connect with the bolt insertion hole XB1a and a second connection position Z allowing the second insertion hole XD12 to connect with the bolt insertion hole XB1a; and a cap XE for regulating that the coming-off prevention XD positioned at the second connection position Z moves to the first connection position Y. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an elevating mechanism that uses the screwing back and forth of a bolt, and storage furniture including the elevating mechanism.

  Conventionally, as an elevating mechanism that changes the relative distance between the first member and the second member, the first member is rotatably held by a bolt, and the second member is held by a nut to which the bolt can be screwed. And by applying an operating force to rotate the operating portion provided at one end of the bolt, the bolt can be screwed forward and backward to change the relative distance between the first member and the second member. The thing which was done is mentioned.

As an example, as shown in Patent Document 1 below, in furniture with an auxiliary top plate that can be used in combination with furniture with a top plate such as a desk, in order to adjust the height position of the auxiliary top plate, An upper stay (hereinafter referred to as “second member”) holding a nut on the downward surface is provided, and a lower stay (hereinafter referred to as “first member”) that can be fitted to the second member from below. And a mode in which the bolt is rotatably held. Then, when the screwed state between the bolt and the nut is released, the bolt is provided with a collar portion that can come into contact with the first member so that the bolt does not come off from the first member. The first member is interposed between the control unit and the operation unit.
JP 2007-117502 A

  However, in order to interpose the first member between the collar portion and the operation portion, the collar portion and the operation portion are separated from each other, and the collar portion is assigned from above the first member. It is essential to attach the operation part from below the member, and to fix it with screws in a state where the relative position of the flange part and the operation part coincides with a predetermined position, and a tool for turning the screw is necessary. The screw must be tightened from below, and an unreasonable posture is forced at the time of fixing work, and the work for holding the bolt rotatably with respect to the first member, that is, the work for attaching the bolt to the first member is smooth. This causes a problem that it cannot be performed. Such a problem becomes a problem when the number of bolts held by the first member is increased from the viewpoint of operation or the like, which is a problem.

  The present invention has been made paying attention to such a problem, and a main object is to prevent the bolt from coming off from the first member when the screwed state of the bolt is released. Needless to say, an object of the present invention is to provide an elevating mechanism capable of smoothly and accurately performing a bolt mounting operation on the first member, and a storage furniture provided with such an elevating mechanism.

  That is, the elevating mechanism of the present invention has an operation portion for applying an operating force at one end, a bolt having a flange near the one end, a bolt portion through which the screw portion of the bolt and the flange can be inserted. A first member having a bolt through wall in which a hole is formed and capable of rotatably holding the bolt; and a second member having a female screw into which a screw portion of the bolt can be screwed. By applying an operation force for rotating the bolt to the part, the bolt can be screwed forward and backward with respect to the female screw, and the relative distance between the first member and the second member can be changed. The lifting mechanism is disposed in a gap formed between the operation portion and the flange portion of the bolt in a state of being attached to or close to the bolt through wall, and the screw portion and the flange portion are inserted therethrough. A possible first insertion hole and a continuous with the first insertion hole. A second insertion hole through which only the screw portion can be inserted; a first communication position where the first insertion hole communicates with the bolt insertion hole; and a second communication hole where the second insertion hole communicates with the bolt insertion hole. A retaining member that is movable between two communication positions, and a movement restricting member that restricts movement of the retaining member positioned at the second communication position to the first communication position. To do.

  Here, the “second member having an internal thread” means an aspect in which an internal thread is cut directly on the second member itself, and an aspect in which a nut having an internal thread is fixed to the second member, It is a concept including both of these.

  In such a case, the simple operation of positioning the retaining member at the first communication position, inserting the screw portion and the flange portion of the bolt into the bolt through hole, and moving the retaining member to the second communication position in this state. Thus, the bolt can be rotatably held by the first member, and the efficiency of attaching the bolt to the first member is significantly improved. In addition, the relative distance between the first member and the second member can be adjusted according to the screwing depth between the female screw and the bolt, and the movement restricting member can be used to adjust the first of the retaining member. Since the movement to the 1-communication position is restricted, even when the screwed state between the screw portion of the bolt and the female screw is released, the collar portion does not come out of the bolt through-hole and is in a good holding state. Can be maintained.

  Particularly, the first member holds a plurality of bolts rotatably, and the retaining member has at least as many pairs of the first insertion holes and the second insertion holes as the number of bolts. If a plurality of bolts are prevented from coming off by a common retaining member, even if the number of bolts held by the first member is increased from the viewpoint of operation, the common retaining member Therefore, it is possible to prevent the plurality of bolts from dropping out, and to solve the problem that the bolt mounting operation to the first member becomes complicated as the number of bolts increases.

  Furthermore, if the movement restricting member is a cap that can be attached to the end portion of the first member, the threaded portion and the flange portion of the bolt are made invisible or difficult to visually recognize from the outside, and the appearance is improved. In addition, it is possible to reduce the number of parts and the total cost as compared with an aspect that requires a dedicated cap.

  In addition, the retaining member is gripped when the sliding portion moves between the first communication position and the second communication position along the contact portion, and a contact portion that can contact the bolt through wall. If it is provided with a possible knob part, it can be slid along the attachment part while picking the knob part, and the movement of the retaining member between the first communication position and the second communication position is smooth and suitable. Can be done.

  In order to more reliably prevent the retaining member from moving from the second communication position to the first communication position, the knob is placed against the movement restricting member in a state where the retaining member is positioned at the second communication position. What is necessary is just to make it function as a stopper which contacts or adjoins and controls the movement to the said 1st communication position.

  If the retaining member is made of a sheet metal integrally including the attachment portion and the knob portion, the structure of the retaining member can be effectively simplified.

  As a preferred embodiment, the second member is a stay fixed to a downward surface of a lifting target member such as a top plate or a shelf, and the first member is fitted with the second member. And the aspect which is a raising / lowering object member support body which supports the said raising / lowering object member in cooperation with the said 2nd member is mentioned.

  The storage furniture of the present invention includes a wagon having a storage space therein, a support attached to the wagon, an auxiliary top plate supported by the support and disposed above the wagon, and the configuration described above. And the second member of the lifting mechanism is a stay fixed to the lower surface of the auxiliary top plate, and the first member is attached to the support. And it is a bracket which fits the second member and supports the auxiliary top plate in cooperation with the second member.

  If this is the case, the height of the auxiliary top plate can be adjusted using the lifting mechanism, and the height position of the auxiliary top plate can be adjusted. The top plate and the auxiliary top plate can be finely adjusted so that they are substantially flush with each other.

  As described above, according to the present invention, the bolt is prevented from being detached from the first member when the screwed state between the bolt and the nut is released. It is possible to provide an elevating mechanism capable of smoothly and accurately performing a bolt mounting operation on a member, and a storage furniture provided with such an elevating mechanism.

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

  The elevating mechanism according to the present embodiment is applied to the storage furniture 1 shown in FIG. 1, and is for moving the auxiliary top plate 4 (corresponding to the “elevation target member” of the present invention) of the storage furniture 1 up and down. .

  As shown in FIGS. 1 to 5, the storage furniture 1 has a storage space 21 </ b> S inside, and a wagon 2 having a storage space 21 </ b> S open on one standing surface (front surface in the present embodiment), and a wagon 2. Of the outer surfaces (back plate 213 forming the back surface of the wagon 2 in this embodiment) other than the one standing surface that opens the storage space 21S, at least in the width direction of the outer surface (back plate 213). The panel 3 is a support body that is mounted so that the fixed position can be changed, and the auxiliary top plate 4 that is supported by the panel 3 and disposed above the wagon 2. In the following description, “front”, “rear”, “left”, and “right” directions refer to the F direction, B direction, L direction, and R direction shown in FIG.

  The wagon 2 includes an upper plate 211 and a bottom plate 212 that face each other in the height direction, a back plate 213 that stands between the upper plate 211 and the bottom plate 212, and both side plates 214 that form both side surfaces of the wagon 2. The wagon body 21 can use the internal space surrounded by these as the storage space 21S, and the opening / closing body 22 (a pair of left and right sliding doors in the illustrated example) that can open and close the opening of the storage space 21S. . Of the upper plate 211, the bottom plate 212, the back plate 213, and the side plates 214, the regions forming the outer surface of the wagon body 21 are flat smooth surfaces. In the present embodiment, casters 215 are provided on the bottom plate 212. Note that a predetermined number of casters 215 among the plurality of casters 215 may be appropriately provided with a lock unit that can restrict the rotation of the casters 215. An intermediate partition plate that can partition the storage space 21 </ b> S of the wagon body 21 may be provided at the substantially central part in the left-right direction and the substantially central part in the height direction of the wagon body 21.

  The panel 3 is arranged in a standing posture along the back plate 213 of the wagon 2 (specifically, the rear surface of the back plate 213). The width dimension of the panel 3 is set to be smaller than the dimension along the left-right direction of the wagon 2. Further, the upper end of the panel 3 is positioned above the upper surface 2A of the wagon 2 (specifically, the upward surface of the upper plate 211). In the present embodiment, the fixing position of the panel 3 with respect to the wagon 2 is set to be changeable along the width direction of the panel 3. In this embodiment, the fixing position of the panel 3 with respect to the wagon 2 is fixed to the first fixing position (P) fixed to the right region of the wagon 2 shown in FIG. 2 and the left region of the wagon 2 shown in FIG. The second fixed position (Q) can be changed. Further, by engaging a pair of engaging claws 3k provided on both side edges of the panel 3 so as to be separated from each other along the height direction, the panel 3 is attached to the wagon 2 by engaging with a hook hole 2k formed on the back surface of the wagon 2. 2 (see FIG. 3). In particular, by making each engagement claw 3k into a downward claw shape, each engagement claw 3k can be easily engaged with the hook hole 2k so that the panel 3 is hooked on the wagon 2 from above. it can. Furthermore, the fixed position of the panel 3 with respect to the wagon 2 is set to be changeable in the height direction. Specifically, a plurality of hook holes 2k are intermittently formed along the height direction of the wagon 2, and a hook hole 2k that engages (hangs) a pair of engagement claws 3k from the plurality of hook holes 2k. By selecting / changing, the relative height position of the panel 3 with respect to the wagon 2 can be appropriately selected / changed according to the use mode or the like (see FIG. 3).

  The auxiliary top plate 4 has a substantially face plate shape, and is attached above the upper end portion of the panel 3 via a bracket XB which is a lifting target member support described later. The width dimension of the auxiliary top plate 4 is substantially the same as the width dimension of the panel 3. In the present embodiment, the depth dimension of the auxiliary top 4 is set to be approximately the same as or slightly larger than the sum of the thickness dimension (depth dimension) of the panel 3 and the depth dimension (dimension along the front-rear direction) of the wagon 2. (See FIG. 2 and FIG. 3). In the present embodiment, the drawer 5 is provided on the downward surface of the auxiliary top plate 4.

  The storage furniture 1 having such various parts changes the relative position of the auxiliary top plate 4 with respect to the wagon 2 by changing the fixing position of the panel 3 with respect to the wagon 2, and is combined with other tables and desks. Can be used. Specifically, the panel 3 is fixed to the first fixing position (P) or the second fixing position (Q), and the auxiliary top plate 4 of the storage furniture 1 is not shown in the figure. It is possible to employ a layout in which a region that is not covered by the auxiliary top plate 4 in the wagon 2 is stored in a space under the top plate of the furniture with the top plate while being abutted on the edge.

  Furthermore, the storage furniture 1 of the present embodiment can be used alone without being attached to the furniture with a top plate. When the storage furniture 1 is used alone, the panel 3 can be removed from the wagon 2 and the wagon 2 can be used alone. In this case, since there is no attachment portion for attaching the panel 3 to the upward surface 2A of the wagon 2, the entire upward surface 2A can be effectively used as a placement surface.

  Therefore, the storage furniture 1 according to the present embodiment includes an elevating mechanism X that moves the auxiliary top plate 4 up and down so that the height position of the auxiliary top plate 4 can be adjusted by the elevating mechanism X.

  As shown in FIG. 5 and the like, the elevating mechanism X includes a bolt XA mainly composed of a screw portion XA1 and a bracket XB (corresponding to the “first member” of the present invention) that can rotatably hold the bolt XA. A stay XC (on the “second member” and “elevation target member support body” of the present invention) that is arranged on the downward surface of the auxiliary top plate 4 and has a female screw XC31 to which the screw portion XA1 of the bolt XA can be screwed. Equivalent), a retaining member XD disposed inside the bracket XB and preventing the bolt XA from falling off, and provided at an end portion of the bracket XB, at a predetermined position (second communication position (Z) described later). A cap XE that is a movement restricting member that restricts the movement of the positioned retaining member XD is provided.

  The bolt XA includes a shaft-shaped screw portion XA1 having a threaded outer peripheral surface, an operation portion XA2 provided at one end for applying an operation force, and a flange portion XA3 provided near one end. . The operation part XA2 is formed by continuously forming an uneven part functioning as a non-slip part on the outer peripheral surface. In the present embodiment, as the operation portion XA2, a resin-made one having a substantially columnar shape and a hollow predetermined region is applied. Moreover, in this embodiment, the substantially disk-shaped thing which has an outer diameter larger than the outer diameter of the thread part XA1 is applied as the collar part XA3. A gap having a predetermined dimension is formed between the operation portion XA2 and the flange portion XA3. In the bolt XA of this embodiment, the screw portion XA1 and the flange portion XA3 are integrated, and the fitting convex portion provided continuously to the flange portion XA3 is fitted into the fitting concave portion formed in the central portion of the operation portion XA2. In the combined state, the operation part XA2 is integrally attached using the screw b1. Note that the fitting convex portion and the fitting concave portion each have a substantially rectangular shape in plan view, and the operation portion XA2, the flange portion XA3, and the screw portion XA1 are reliably rotated synchronously.

  As shown in FIGS. 3, 5 to 7, and the like, the bracket XB includes a bolt through wall XB 1 formed with a bolt insertion hole XB 1 a through which the screw portion XA 1 and the flange portion XA 3 of the bolt XA can be inserted, and the bolt through wall XB 1. A side wall XB2 and a side wall XB3 that rise upward from both side edges and can face each other are provided. The bolt insertion hole XB1a is set to have an opening diameter slightly larger than the outer diameter of the flange portion XA3. In the present embodiment, bolt insertion holes XB1a are formed at positions separated by a predetermined distance along the front-rear direction (longitudinal direction) of the bolt penetration wall XB1. At the rear end of one side wall XB2 (specifically, the outer side wall XB2), an arm portion XB4 having a hook claw XB41 that can be engaged with a hook hole 3a formed in the panel 3 is continuously provided. A bent wall XB5 bent toward one side wall XB2 is continuously provided at the rear end of the other side wall XB3 (specifically, the inner side wall XB3). Note that the upward end surfaces of the side wall XB2, the side wall XB3, the arm portion XB4, and the bent wall XB5 are at the same height position. The bracket XB of this embodiment is formed from a single sheet metal material.

  As shown in FIGS. 2 and 4, the stay XC is attached to the vicinity of both side edges of the downward surface of the auxiliary top plate 4 in a state where the longitudinal direction thereof coincides with the front-rear direction of the auxiliary top plate 4. . As shown in FIG. 5, each stay XC includes a stay main body XC1 that is directly attached to the lower surface of the auxiliary top plate 4, and a nut holder XC2 that is integrally attached to the stay main body XC1 and can hold the nut XC3. It is equipped with.

  The stay main body XC1 includes an upper wall XC11 that can be attached to the downward surface of the auxiliary top plate 4, a pair of side walls XC12 that are suspended from both side edges, front end portions, and rear end portions of the upper wall XC11, and front walls. A hollow rectangular parallelepiped shape having XC13 and a rear wall XC14 opened downward. The upper wall XC11 is formed with an insertion hole XC11a communicating with the nut 4n embedded on the lower surface side of the auxiliary top plate 4, and a screw b2 inserted from the insertion hole XC11a is screwed onto the nut 4n, thereby The main body XC1 and thus the stay XC are fixed to the downward surface of the auxiliary top plate 4. In the present embodiment, the stay main body XC1 is formed from a single sheet metal material.

  The nut holding body XC2 connects a pair of side walls XC21 that can be brought into contact with or close to the side wall XC12 of the stay main body XC1 and the lower ends of the side walls XC21, and is separated from the upper wall XC11 of the stay main body XC1 by a predetermined distance. The lower wall XC22 which opposes is provided. A nut XC3 having the female screw XC31 on the inner peripheral surface is fixed to the lower surface of the lower wall XC22, and a female screw communication hole XC22a communicating with the female screw XC31 is formed on the lower wall XC22. The nut XC3 and the female screw communication hole XC22a are provided at positions corresponding to the bolt insertion holes XB1a, respectively. That is, the nut XC3 and the female screw communication hole XC22a are formed at positions separated by a predetermined distance along the front-rear direction (longitudinal direction) of the nut holder XC2. In the present embodiment, the nut holder XC2 is formed from a single sheet metal material, and the nut XC3 is fixed to the lower wall XC22 in a non-rotatable manner by spot welding. The nut holder XC2 and the stay main body XC1 are also fixed by spot welding. In the state in which the nut holder XC2 is integrally attached to the stay main body XC1, the dimension in the front-rear direction (longitudinal direction) of the lower wall XC22 is set so that the insertion hole XC11a is not covered by the lower wall XC22 ( (See FIG. 5).

  As shown in FIGS. 5 to 7 and the like, the retaining member XD includes an attachment portion XD1 that can be attached to the bolt through wall XB1, and a knob portion XD2 that can be gripped when sliding. In the present embodiment, the retaining member XD is formed from a single sheet metal material, and a portion extending upward from the front end portion of the contact portion XD1 is defined as a knob portion XD2. The contact portion XD1 is disposed in a gap formed between the operation portion XA2 and the flange portion XA3 of the bolt XA in a state of being in contact with or close to the upward surface of the bolt through wall XB1. A first insertion hole XD11 through which the screw part XA1 and the collar part XA3 can be inserted, and a threaded part XA1 that can be inserted through the attachment part XD1 and the first insertion hole XD11 cannot be inserted. A second insertion hole XD12 is formed (see FIGS. 6 and 7). The first insertion hole XD11 has a substantially circular shape having an opening diameter slightly larger than the outer diameter of the flange portion XA3. The second insertion hole XD12 is continuous with a part of the first insertion hole XD11, and the screw portion XA1. It is a long hole having an opening width dimension that is slightly larger than the outer diameter. The retaining member XD of the present embodiment includes the number of bolts XA that hold the set of the first insertion hole XD11 and the second insertion hole XD12 in one bracket XB (in other words, the bolt insertion hole XB1a formed in the bolt through wall XB1). The same number of pairs). Such a retaining member XD includes a first communication position (Y) where the first insertion hole XD11 communicates with the bolt insertion hole XB1a shown in FIG. 6, and a second insertion hole XD12 shown in FIG. 5 and FIG. It is slidable between the second communication position (Z) communicating with the insertion hole XB1a. In this embodiment, when the retaining member XD is positioned at the first communication position (Y), the knob portion XD2 is positioned at substantially the same position as the front end of the side wall XB2 and the side wall XB3 of the bracket XB (see FIG. 6). When XD is positioned at the second communication position (Z), the knob portion XD2 is set to be positioned behind the front end of the side wall XB2 and side wall XB3 of the bracket XB (see FIG. 7).

  The cap XE can be attached to the front end portion of the bracket XB in a state where the retaining member XD is positioned at the second communication position (Z). The cap XE includes a decorative part XE1 having an outer surface substantially flush with the side wall XB2, the side wall XB3, and the bolt through wall XB1 of the bracket XB, and an insertion part XE2 that can be inserted into the bracket XB. ing. In the present embodiment, a resin molded product is applied as the cap XE. A step portion XE3 is provided at the boundary between the decorative portion XE1 and the insertion portion XE2, so that when the insertion portion XE2 is inserted into the bracket XB, it abuts against the front end portion of the bracket XB so that further insertion operations can be restricted. I have to. Further, a nut XEn is provided on the downward surface side of the insertion portion XE2, and in a state where the insertion portion XE2 is inserted into the bracket XB, the nut XEn communicates with a screw hole XB1b formed in the bolt through wall XB1, By screwing a screw b3 inserted into XB1b into a nut XEn, the cap XE can be integrally attached to the bracket XB (see FIG. 5). When the cap XE is attached to the front end of the bracket XB, the upward surface of the cap XE is the upward surface of the bracket XB (specifically, the upward surface of the side wall XB2, the side wall XB3, the arm portion XB4, and the bent wall XB5). It is substantially flush with the end face.

  Next, the assembling procedure and operation of such a lifting mechanism X will be described.

  First, a stay XC in which a stay main body XC1 and a nut holder XC2 are integrally assembled in advance is attached to the downward surface of the auxiliary top plate 4. This attachment work is performed by screwing the screw b2 inserted into the insertion hole XC11a into the nut 4n in a state where the insertion hole XC11a of the stay main body XC1 and the nut 4n of the auxiliary top plate 4 are in communication. In the present embodiment, as described above, the stays XC are attached in the vicinity of both side edges of the auxiliary top plate 4, and the pair of stays XC are opposed to each other.

  On the other hand, the bolt XA to which the operation portion XA2 is integrally attached using the screw b1 is rotatably held by the bracket XB. Specifically, the retaining member XD is inserted into the bracket XB from the opened front end of the bracket XB, and the retaining member XD is positioned at the first communication position (Y) (see FIG. 6). In this state, the bolt XA is inserted into the bolt insertion hole XA1a and the first insertion hole XD11 of the bracket XB from below, and then the retaining member XD is attached to the bolt through wall XB1 from the first communication position (Y). The sliding movement is made to the two communication position (Z) (see FIG. 7). As a result, the contact portion XD1 of the retaining member XD enters the gap formed between the operation portion XA2 and the flange portion XA3 of the bolt XA, and the bolt XA is prevented from coming off downward. Note that when the retaining member XD is moved between the first communication position (Y) and the second communication position (Z), the knob portion XD2 may be picked. Further, in order to prevent the bolt XA from moving in the second insertion hole XD12 when the retaining member XD is positioned at the second communicating position (Z), the retaining member XD is moved from the first communicating position (Y) to the first communicating position (Y). When the predetermined distance is moved toward the two communication positions (Z), the opening edge of the second insertion hole XD12 hits the screw portion XA1, and the retaining member XD is further moved toward the second communication position (Z). The screw part XA1, and thus the entire bolt XA, moves from the initial insertion position where the screw part XA1 can be inserted into the bolt insertion hole XA1a and the second insertion hole XD12 to the movement restricting position where the screw part XA1 hits the opening edge of the bolt insertion hole XA1a. ing. The bolt XA positioned at the movement restricting position becomes unmovable in the front-rear direction when the screw portion XA1 is sandwiched between the opening edge of the bolt insertion hole XA1a and the opening edge of the second insertion hole XD12 (see FIG. 7).

  After positioning the retaining member XD in the second communication position (Z) in this way, the cap XE is attached to the front end portion of the bracket XB. This mounting operation is performed by screwing the screw b3 inserted into the screw hole XB1b of the bolt through wall XB1 into the nut XEn of the insertion portion XE2 in a state where the insertion portion XE2 of the cap XE is inserted into the bracket XB. In this mounted state, the knob portion XD2 of the retaining member XD abuts or approaches the end surface XE21 of the insertion portion XE2, and functions as a stopper that restricts the movement of the retaining member XD to the first communication position (Y) (FIG. 7).

  Then, the stay XC and the bracket XB are fitted to each other, and the bolt XA is screwed into the female screw XC31 of the nut XC3, whereby the stay XC and the bracket XB are integrally assembled. In the state where the stay XC and the bracket XB are fitted to each other, the side wall XC12, the front wall XC13, and the rear wall XC14 of the stay main body XC1 are respectively the side wall XB2, the side wall XB3, and the bent wall XB5 of the bracket XB. It is located at the position that is attached or close to the inside.

  The elevating mechanism X assembled in such a procedure gives the operating force to rotate the bolt XA to the operating portion XA2, thereby screwing the bolt XA into and out of the female screw XC31 of the nut XC3, The relative distance between the bracket XB and the stay XC can be changed. In this embodiment in which one end of the bracket XB is supported on the panel 3 fixed to the wagon 2, the stay XC is raised or lowered with respect to the bracket XB by rotating the operation portion XA2 in the forward direction or the reverse direction. The auxiliary top plate 4 supported by the stay XC moves up and down together with the stay XC, and the height position can be finely adjusted. Further, when the stay XC is raised to the maximum extent, the screwed state between the screw portion XA1 and the female screw XC31 can be released, but at this time also, the flange portion XA3 of the bolt XA is directly supported by the retaining member XD. At the same time, since it is indirectly supported by the bolt through wall XB1 of the bracket XB via the retaining member XD, it is possible to prevent the bolt XA from being detached from the bracket XB.

  As described above, the elevating mechanism X according to the present embodiment is a retaining member arranged in a gap formed between the operation portion XA2 and the flange portion XA3 of the bolt XA in a state of being in contact with or close to the bolt through wall XB1. XD is used, and the first insertion hole XD11 through which the screw portion XA1 and the flange portion XA3 can be inserted and the second insertion through which only the screw portion XA1 can be inserted are inserted into the retaining member XD. A first communication position (Y) in which the hole XD12 is formed, the first insertion hole XD11 communicates with the bolt insertion hole XB1a, and a second communication position (Z) in which the second insertion hole XD12 communicates with the bolt insertion hole XB1a. Since the retaining member XD is positioned at the first communication position (Y), the threaded portion XA1 and the flange portion XA3 of the bolt XA are inserted into the bolt insertion hole XA1a. 2 ranks By an extremely simple operation of moving the (Z) can be attached to bolt XA to the bracket XB, the efficiency of mounting operation is remarkably improved.

  Moreover, since the retaining member XD positioned at the second communication position (Z) is restricted from moving to the first communication position (Y) by the cap XE attached to the end of the bracket XB, the retaining member XD is The two communication positions (Z) can be kept, and a good support state for the bolt XA can be maintained.

  In particular, the bracket XB is configured to rotatably hold a plurality of bolts XA, and a set of first insertion holes XD11 and second insertion holes XD12 is formed in the retaining member XD at least as many as the number of bolts XA. Since the plurality of bolts XA are prevented from coming off by the common retaining member XD, even if the number of bolts XA to be held by one bracket XB is increased from the viewpoint of operation or the like, the common retaining member XD Therefore, it is possible to prevent the plurality of bolts XA from dropping out, and to prevent the bolt XA from being attached to the bracket XB.

  In addition, the retaining member XD slides between the first communication position (Y) and the second communication position (Z) along the contact portion XD1 and the contact portion XD1 that can be contacted with the bolt through wall XB1. Since the grip portion XD2 that can be gripped when moved is provided, the contact portion XD1 can be slid along the bolt penetration wall XB1 while gripping the grip portion XD2, and the first retaining member XD The movement between the communication position (Y) and the second communication position (Z) can be performed smoothly and accurately.

  Further, in a state where the retaining member XD is positioned at the second communication position (Z), the knob portion XD2 is in contact with or close to the cap XE, and the knob portion XD2 is restricted from moving to the first communication position (Y). Since the stopper member XD can be more reliably prevented from moving from the second communication position (Z) to the first communication position (Y), a separate dedicated stopper is not required. It is possible to effectively reduce the number of points. Moreover, since the knob portion XD2 can be brought into surface contact with the end surface XE21 of the cap XE, the contact area can be effectively obtained and the stopper function is improved.

  Since the retaining member XD is made of a sheet metal integrally including the attachment portion XD1 and the knob portion XD2, it contributes to simplification of the structure of the retaining member XD.

  The storage furniture 1 according to this embodiment includes a wagon 2 having a storage space 21S therein, a panel 3 attached to the wagon 2, and an auxiliary top plate 4 supported by the panel 3 and disposed above the wagon 2. And the above-described lifting mechanism X for lifting and lowering the auxiliary top 4, the lifting mechanism X is used for the auxiliary top 4 when used in combination with the furniture 7 with the top. The height position can be finely adjusted so as to be flush with the top plate 8 of the furniture 7 with the top plate, which is excellent in practicality.

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

  For example, in the above-described embodiment, the operation unit is exemplified as a bolt that is separate from the collar part and the screw part. Good.

  Moreover, the collar part should just be a site | part which protrudes outward from the outer peripheral surface of a screw part, and it may replace with a disk shape and may be a polygonal thing. Furthermore, as a collar part, you may apply the protrusion protruded outward only from the predetermined one place or multiple places among the outer peripheral surfaces of a volt | bolt instead of going around the outer peripheral surface of a volt | bolt. What is necessary is just to change suitably the shape of the 1st penetration hole of a retaining member corresponding to the shape of a collar part.

  The 1st member (bracket in the above-mentioned embodiment) may hold a single bolt or three or more bolts rotatably. In this case, the number of bolt insertion holes and the set of first insertion holes and second insertion holes of the retaining member may be set to at least the same number as the number of bolts.

  An aspect in which a female screw is directly formed on the second member (stay in the embodiment) may be used. In this case, it is not necessary to fix a separate nut to the second member.

  You may employ | adopt a shelf board and a top plate as a raising / lowering object member.

  Moreover, the raising / lowering target member shall have a female screw, and it is good also as an aspect which screws a volt | bolt to this female screw. In this case, the raising / lowering target member itself corresponds to the “second member” of the present invention.

  As a movement restricting member that restricts movement of the retaining member positioned at the second communication position to the first communication position, a dedicated member different from the cap may be used.

  In addition, as a method of fixing the cap to the first member, a method of pressing the cap insertion portion into the first member and fixing only by the friction force, an elastic engagement claw is provided on the cap, and the first member Alternatively, a method may be employed in which an engagement hole that can be engaged with the elastic engagement claw is formed, and the elastic engagement claw is engaged with the engagement hole and fixed.

  The retaining member is not made of sheet metal but may be made of other materials, for example, resin.

  You may apply the raising / lowering mechanism which concerns on this invention as what raises / lowers the armrest of a chair. In this case, the elbow rest arranged on the lower surface of the armrest corresponds to the “second member” of the present invention, and the arm portion that fits the elbow rest and extends in the height direction is the “first member” of the present invention. Equivalent to.

  Moreover, without providing a drawer on the downward surface of the auxiliary top plate, a space opened in the front and left and right width directions is formed between the upward surface of the wagon and the downward surface of the auxiliary top plate, It is good also as storage furniture which can employ | adopt the layout which put the top plate of the furniture with a top plate in this space.

  In addition, instead of the panel, a plurality of columnar members attached to any one of the standing outer surfaces other than the front surface of the wagon may be applied as the support. A mode in which the support is attached to the wagon so that the fixed position cannot be changed, or a mode in which the width of the support and the lifting target member is substantially the same as the width of the wagon may be used.

  In addition, as an opening / closing body that can open and close the opening of the wagon, a revolving door (including a double door type), a drawer, or a shutter may be applied, or an open type that does not have an opening / closing body and is always open. It can be a wagon.

  Further, the wagon may have a substantially square shape in a plan view or a shape including an arcuate portion in a plan view.

  In addition, the specific configuration of each part is not limited to the above-described embodiment, such as setting the shape of the lifting target member to a shape other than a rectangle, and various modifications can be made without departing from the spirit of the present invention. is there.

The front view of the state which is the storage furniture which concerns on one Embodiment of this invention, and fixed the panel to the 1st fixing position. FIG. The same side view. The top view of the state which was storage furniture which concerns on the same embodiment, and fixed the panel to the 2nd fixing position. The figure which shows typically the AA line cross section of FIG. The figure which shows the state which positioned the securing member in the 1st communication position in the same embodiment. The figure which shows the state which positioned the securing member in the 2nd communication position in the embodiment.

Explanation of symbols

1 ... Storage furniture 2 ... Wagon 3 ... Support (panel)
4 ... Member to be lifted (auxiliary top plate)
X ... Elevating mechanism XA ... Bolt XA1 ... Screw part XA2 ... Operation part XA3 ... Hook XB ... First member (bracket)
XB1 ... bolt through wall XB1a ... bolt insertion hole XC ... second member (stay)
XC31 ... female screw XD11 ... first insertion hole XD12 ... second insertion hole XD ... retaining member XD1 ... attachment part XD2 ... knob (Y) ... first communication position (Z) ... second communication position

Claims (8)

A bolt having an operating part for applying an operating force at one end, and having a flange near the one end;
A first member that has a bolt through wall in which a bolt insertion hole into which the threaded portion of the bolt and the flange portion can be inserted, and that can hold the bolt rotatably;
A second member having a female screw to which the screw portion of the bolt can be screwed, and by applying an operation force to rotate the bolt to the operation portion, the bolt is screwed to the female screw. An elevating mechanism that is capable of changing the relative distance between the first member and the second member by moving forward and backward,
A first insertion hole that is arranged in a gap formed between the operation portion and the flange portion of the bolt in a state of being attached to or close to the bolt through wall, and through which the screw portion and the flange portion can be inserted, And a second insertion hole that is continuous with the first insertion hole and into which only the screw portion can be inserted, the first insertion position where the first insertion hole communicates with the bolt insertion hole, and the second insertion hole. A retaining member that is movable between a second communication position that communicates with the bolt insertion hole,
An elevating mechanism comprising: a movement restricting member for restricting movement of the retaining member positioned at the second communication position to the first communication position. The first member holds a plurality of bolts rotatably;
The retaining member has a set of the first insertion hole and the second insertion hole at least as many as the number of bolts;
The lifting mechanism according to claim 1, wherein a plurality of bolts are prevented from being detached by a common retaining member. The elevating mechanism according to claim 1 or 2, wherein the movement restricting member is a cap that can be attached to an end of the first member. A gripping portion that can be gripped when the retaining member slides between the first communication position and the second communication position along the contact portion, and a contact portion that can contact the bolt through wall. The elevating mechanism according to claim 1, 2, or 3. The state in which the knob is in contact with or close to the movement restricting member in a state where the retaining member is positioned at the second communicating position, and functions as a stopper for restricting movement to the first communicating position. 4. Elevating mechanism according to 4. The elevating mechanism according to claim 4 or 5, wherein the retaining member is made of a sheet metal integrally including the attachment portion and the knob portion. The second member is a stay fixed to a downward surface of a lifting target member such as a top plate or a shelf plate,
The lifting mechanism according to claim 1, wherein the first member is a lifting target member support that is fitted to the stay and supports the lifting target member. A wagon having a storage space inside,
A support attached to the wagon;
An auxiliary top plate supported by the support body and disposed above the wagon;
It comprises the lifting mechanism according to any one of claims 1 to 7,
The second member is a stay fixed to the downward surface of the auxiliary top plate,
The storage furniture, wherein the first member is a bracket that is attached to the support and is fitted to the stay to support the auxiliary top plate.

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