JP5851203B2 - Optional member mounting structure and cart apparatus provided with the same - Google Patents

Description

  The present invention relates to a mounting structure for optional members such as a shelf board, a tray, and a box, which is detachably mounted on a fixture used in an office space such as an office, and a cart apparatus including the same.

  The fixtures used in office spaces such as offices are equipped with optional members such as shelves, trays, boxes, etc. for placing articles such as electronic devices, and these optional members are detachably attached to the columns. There is one configured to change its height position. When working in offices, hospitals, public facilities, etc. while moving in the work space, a base equipped with casters, a column (support base) standing up connected to the base, and the upper end of the column 2. Description of the Related Art A cart apparatus (furniture) that includes a top plate attached to a rack and an optional member such as a shelf board that is detachably attached to an intermediate portion of a support column and is configured to be able to run is often used.

  Furthermore, as an optional member mounting structure, a locking claw that protrudes rearward from the rear end of the bracket is inserted into a plurality of locking holes that are drilled at predetermined intervals in the vertical direction on the mounting surface of the column. And an optional member supported by a bracket attached to the column in a cantilevered state. In this optional member mounting structure, the optional member can be detachably mounted at a desired height position corresponding to the locking hole by locking the locking claw of the bracket in the appropriately selected locking hole. it can.

  In such an option member mounting structure, generally, the hooking hook is bent downward at the protruding end side to form a hook-like catch portion, and an article is placed on the option member and the bracket. When the external force is applied, the hook on the protruding end side of the locking claw inserted into the locking hole is hooked, and the rear end of the bracket abuts the mounting surface of the support column, which stabilizes the optional member. It can be supported by a support. On the other hand, in the above-mentioned option member mounting structure, since the locking claw is formed in a hook shape that bends downward, when an external force acts on the option member and the bracket from below, the rear end side of the bracket in the cantilever state The option member will rattle upward, with the latching part of the latching claw being pulled out, or the catching part of the catching part of the latching claw will come off and the latching claw will be pulled out of the latching hole. There is a risk of falling off.

  On the other hand, Patent Document 1 includes a large hole portion having a large vertical dimension and a small hole portion having a small height dimension extending laterally from the lower end side of the large hole portion. (Latching hole) is formed in an L shape, and the locking claw is inserted into the large hole portion of the locking hole and the bracket is slid in the lateral direction so that the locking claw is locked to the small hole portion of the locking hole. An optional member mounting structure configured as described above is disclosed.

  In the option member mounting structure, the rotation of the option member and the bracket is restricted by engaging the locking claw with the small hole portion having a small height. Accordingly, even when an unexpected external force acts on the option member from below, it is possible to prevent the option member from rattling or the option claw from falling off due to the locking claw being detached from the locking hole.

  Patent Document 2 discloses a mounting structure for an optional member that includes a locking claw that can be selected between a hooked state and a hook-released state by a turning operation in addition to the locking claw. ing.

  In this optional member mounting structure, the locking claw is inserted into the locking hole and locked to attach the optional member to the column, and the locking claw is manually rotated to be inserted into the locking hole. By engaging with the peripheral part of the hole, the rotation of the option member and the bracket is restricted. Accordingly, even when an unexpected external force acts on the option member from below, it is possible to prevent the option member from rattling or the option claw from falling off due to the locking claw being detached from the locking hole.

Japanese Patent Laid-Open No. 05-277011 Japanese Utility Model Publication No. 06-204

  However, in the option member mounting structure disclosed in Patent Document 1 and Patent Document 2 described above, after the locking member is inserted into the locking hole and locked, and the optional member is disposed at a predetermined position, It is necessary to perform another operation of moving the bracket laterally or rotating the lock claw and inserting it into the locking hole.

  For this reason, when changing the attachment position of the option member, the user temporarily removes the option member, and when the option member is attached to the desired position again, the bracket is moved or the lock claw is turned. There is a possibility that the option member may be forgotten and the option member may be dropped off due to forgetting the option member retaining operation (operation of the retaining mechanism).

  In view of the above circumstances, the present invention prevents the forgetting operation of optional members such as shelf boards, trays, and boxes from being forgotten, and allows the optional members to be suitably attached so that they do not rattle or fall off. An object is to provide a member mounting structure and a cart apparatus including the same.

  The mounting structure of the optional member of the present invention is formed by projecting backward from the rear end of the bracket that supports the optional member, and a plurality of locking holes formed on the mounting surface of the fixture at intervals in the vertical direction. And an engaging member that is formed in a hook-like shape with the protruding end bent downward, and is inserted into the locking hole and locked to detachably attach the bracket in a cantilevered state. An attachment structure, wherein the option member is supported so as to be slidable in the front-rear direction on the option member support surface of the bracket, is provided integrally with the option member, and protrudes rearward along the front-rear direction from the option member And a retaining mechanism having a fixing means for fixing the optional member to the bracket, and mounting the bracket In the state where the optional member is slid rearward and the protruding piece is inserted into the locking hole, the upper end of the protruding piece and the upper peripheral edge of the locking hole into which the protruding piece is inserted The protruding piece is formed so that the vertical interval between the upper end portion of the engaging claw and the upper peripheral portion of the engaging hole into which the engaging claw is inserted is smaller than the vertical interval. It is characterized by being.

  In this invention, when inserting the locking claw of the bracket into the locking hole of the mounting surface of the fixture, the option member supported so as to be slidable is positioned on the front side of the bracket, and the locking claw of the bracket is enlarged. Insert it into the locking hole so that it is exposed and easy to see. In addition, with the locking claw inserted into the locking hole and locked, the optional member arranged on the front side of the predetermined position where the article is placed and used is slid rearward with the bracket attached. To move to a predetermined position.

  In this way, the option member can be slid and the protruding piece of the retaining mechanism provided integrally with the option member can be automatically inserted into the locking hole. Further, the option member slid to a predetermined position by the fixing means can be fixed to the bracket, and the protruding piece can be held in a state inserted in the locking hole. Also, by releasing the fixing by the fixing means and sliding the optional member forward, the protruding piece is automatically pulled out from the locking hole, making it easy to see the locking claw of the bracket and the locking hole of the mounting surface. The optional claw and the bracket can be removed by removing the locking claw from the locking hole.

  Then, as described above, the optional member is slid rearward to insert the protruding piece into the locking hole, and the upper edge of the protruding piece and the upper edge of the locking hole into which the protruding piece is inserted while attached to the fixture. The protruding piece is formed so that the vertical distance between the upper and lower portions is smaller than the vertical distance between the upper end of the locking claw and the upper peripheral edge of the locking hole into which the locking claw is inserted. Has been. For this reason, when an unexpected external force acts from the lower side of an option member or a bracket, the upper end part of a protrusion piece contacts the upper peripheral part of a locking hole, and rotation of a bracket and an option member can be controlled. As a result, it is possible to prevent the option member from rattling or the option member from falling off due to the locking claw being pulled out of the locking hole.

  In the optional member mounting structure of the present invention, the protruding piece is inserted into the locking hole into which the locking claw is inserted, and the upper end portion of the locking claw and the locking claw are inserted. It is desirable to be configured to be inserted between the upper peripheral edge of the locking hole.

  In this invention, the option member is slid rearward, and the protruding piece is automatically inserted between the upper end of the locking claw and the upper peripheral edge of the locking hole into which the locking claw is inserted. Since there is a protruding piece above the locking claw, when an external force acts on the optional member from below, the upper end of the locking claw hits the lower end of the protruding piece, and the upper end of the protruding piece is locked. The contact with the upper peripheral edge of the hole can surely restrict the rotation of the bracket and the optional member. Therefore, it is possible to reliably prevent the option member from rattling or the option member from falling off due to the locking claw being detached from the locking hole.

  Further, by constructing the protruding piece so as to be inserted between the upper end of the locking claw and the upper peripheral edge of the locking hole, the mounting structure of the optional member, and thus the optional member comprising the optional member and the bracket It is also possible to reduce the vertical dimension of the structure so as to be compact.

  Furthermore, in the option member mounting structure of the present invention, the fixing means has a long hole formed in the bracket so as to penetrate the bracket in the longitudinal direction, the screw hole provided in the option member, and the bracket. A mounting screw that is inserted through the long hole and screwed into the screw hole of the optional member, and the fixing means moves in the front-rear direction along the long hole, so that the optional member moves. It is more desirable that it also serves as a guide means that slides in the front-rear direction on the option member support surface of the bracket.

  In this invention, the optional member can be fixed to the bracket by screwing the mounting screw into the screw hole and tightening, and the optional member can be slid in the front-rear direction by loosening the mounting screw. Can do. When the option member is slid in the front-rear direction, the mounting screw moves inside the long hole formed with the longitudinal direction directed in the front-rear direction. It can be moved along the front-rear direction, and can be used both as a fixing means and a guide means. Thus, the optional member retaining mechanism can be suitably configured with a simple structure.

  The cart device of the present invention includes a base having casters, a support base standing upward from the base, and an optional member that is detachably attached to the support base, and can be run by the casters of the base. The cart apparatus is configured to include any of the optional member mounting structures described above.

  In this invention, the effect by the attachment structure of the above-mentioned optional member can be obtained.

  According to the option member mounting structure of the present invention and the cart apparatus equipped with the option member, the locking claw is inserted into the locking hole and locked, and the bracket is attached, and then the option member shifted forward is moved rearward. By performing the operation of sliding to a predetermined position, the protruding piece of the retaining mechanism can be automatically inserted into the locking hole. Therefore, it is possible to reliably prevent the option member from being forgotten to be detached and to attach the option member suitably so that the option member does not rattle or fall off.

It is a perspective view which shows the cart apparatus (furniture) which concerns on one Embodiment of this invention. FIG. 2 is a cross-sectional view taken along line X1-X1 in FIG. 1, FIG. 2A is a cross-sectional view of the support base, and FIG. 2B is a front view of the support base. It is a figure which shows the attachment structure of the option member which concerns on one Embodiment of this invention. FIG. 4 is a side view taken along line X2-X2 of FIG. 3 and is a side view showing an optional member and a bracket. It is a X3-X3 arrow view of FIG. 4, and is a top view from the downward direction of an option member and a bracket. It is a perspective view showing a retaining member (a retaining mechanism) of the mounting structure for an optional member according to an embodiment of the present invention. It is a figure which shows the method of attaching an option member with the attachment structure of the option member which concerns on one Embodiment of this invention, and is a figure which shows the state which inserted and latched the latching claw in the latching hole. It is a figure which shows the method of attaching an option member with the attachment structure of the option member which concerns on one Embodiment of this invention, and is a figure which shows the state which slid the option member and inserted the protrusion piece into the locking hole. It is a figure which shows the modification of the attachment structure of the option member which concerns on one Embodiment of this invention. It is a figure which shows the modification of the attachment structure of the option member which concerns on one Embodiment of this invention.

  Hereinafter, an optional member mounting structure and a cart apparatus including the same according to an embodiment of the present invention will be described with reference to FIGS. Here, in the present embodiment, the option member is described as a shelf board. However, the option member according to the present invention may be a tray or a box, and is not necessarily limited to a shelf board. .

  As shown in FIG. 1, the cart apparatus A according to the present embodiment includes a base 1 that forms the lowermost part, a support base (post) 2 that extends upward from the base 1, and front and rear of the support base 2. A plurality of shelf boards (optional members) 4 provided to be detachably attached to an attachment surface (shelf board attachment surface) 3 facing the direction T1, and a top plate 5 attached to the upper end portion of the support base 2, An operation handle 6 connected to the rear end 5a side of the top plate 5 and projecting rearward, and connected to the rear end portion 5a side of the top plate 5 and provided to be inclined downward toward the rear. And a lever 7. Furthermore, in the cart apparatus A of the present embodiment, an electronic device unit 8 including a tablet PC or the like is detachably connected to the rear end portion 5a side of the top plate 5.

  Here, in the present embodiment, the direction indicated by the arrow T1 in FIG. 1 is the “front-rear direction”, and the direction indicated by the arrow T2 in FIG. 1 orthogonal to the “front-rear direction” is the “left-right direction”.

  As shown in FIG. 1, the base 1 extends radially from the central portion in four directions, and has four leg rods 10 whose base ends are connected to each other at the central portion. The four casters 11 are attached. Each caster 11 is supported by a leg rod 10 so as to be rotatable about a horizontal axis, and is also supported so as to be rotatable about a vertical axis. Thereby, the cart apparatus A provided with the base 1 at the lowermost part can run on the floor surface in an arbitrary direction.

  As shown in FIGS. 1 and 2, the support base 2 is formed in a substantially cylindrical shape, and has an outer support column 12 (fixed-side support column) erected with its lower end connected to the center of the base, and the outer support column. 12 is configured to include an inner column 13 (movable column) that is fitted to the inner cavity from the upper end side of the column 12 to the inner cavity, and is disposed so as to be movable back and forth in the vertical direction T3 from the inner cavity of the outer column 12. . Further, as shown in FIG. 2, the outer support column 12 includes a cylindrical outer 14 having a substantially elliptical cross-section formed by integrally molding aluminum or the like, and four attached brackets 15 attached to the outer 14. Yes.

  And the outer 14 of the outer support | pillar 12 of this embodiment is dented inside, respectively on the width direction both sides along an elliptical long side direction, and the front side and back side of an elliptical short side direction, respectively, and an up-down direction A mounting groove 16 extending to T3 is formed. That is, a total of four mounting grooves 16 are formed on the outer side, two on the front side and two on the rear side.

  The attached metal fitting 15 is a rod-shaped member made of metal and having a substantially U-shaped cross section, and a plurality of substantially rectangular locking holes 17 are formed through the vertical direction T3, which is the longitudinal direction, at a predetermined interval. Yes. As shown in FIG. 2, the mounted metal fitting 15 is fitted in the four mounting grooves 16 of the outer 14, and is attached with the locking hole 17 facing the front side in the front-rear direction T <b> 1.

  As shown in FIG. 1, the operation handle 6 is used for causing the cart device A to travel in a predetermined direction by the operator holding and operating the operation bar 6 a. A pair of mounting bars 6b projecting rearward from the end 5a side and an operation bar 6a extending in the left-right direction T2 by connecting the tip portions of the pair of mounting bars 6b to each other are formed.

  The operation lever 7 is for locking the inner support column 13 slidably provided in the outer support column 12 at an arbitrary position so as not to slide. That is, when the office worker operates the operation lever 7, the locking or unlocking of the inner support 13 is switched by the lock mechanism provided in the support base 2, and the sliding movement of the inner support 13 is controlled, so that the support base is controlled. The height of 2 can be adjusted.

  Next, as shown in FIGS. 1 and 3 to 5, the shelf board (optional member) 4 of the present embodiment is formed in a substantially flat plate shape, and the upper surface 4 a is used for placing various articles used for work. It is an article placement surface. And this shelf board 4 is mounted and supported on the shelf board support surface (option member support surface) 21 of the bracket 20 which is a mounting bracket, and is supported by the shelf board attachment structure (option member attachment structure) B. It is attached to the attachment surface 3 of the base 2.

  The shelf mounting structure B of the present embodiment is provided with a plurality of locking holes 17 formed in the mounting surface 3 of the support base 2 at intervals in the vertical direction T3 and a bracket 20 that supports the shelf 4. A locking claw 22 is provided, which is inserted into the locking hole 17 and locked to detachably attach the bracket 20 in a cantilevered state, and the locking claw 22 locked to the locking hole 17 includes a locking hole. 17 is provided with a retaining mechanism 23 for preventing it from coming off from 17.

  First, the bracket 20 of the present embodiment includes a substantially rectangular flat plate-like shelf board support plate part (optional member support plate part) 24 and a left and right side with respect to the center in the left-right direction T2 that is the width direction of the shelf board support plate part 24. A pair of bracket portions 25 and 26 are integrally formed to be connected to the lower surface positions at equal intervals. At this time, the pair of bracket portions 25 and 26 are formed on both sides in the width direction of the mounting surface 3 of the support base 2 with the distance d1 in the left-right direction T2, and are equal to the distance d2 between the locking holes 17 adjacent in the width direction. Arranged.

  Further, as shown in FIG. 3 and FIG. 5, the shelf plate support plate portion 24 is formed by penetrating from the lower surface to the upper surface with the longitudinal direction facing the longitudinal direction T1 that is the depth direction of the shelf plate support plate portion 24. A hole 27 is provided. In the present embodiment, three long holes 27 are provided, and the two long holes 27 are respectively disposed on both sides in the left and right direction T2 on the rear side of the shelf support plate 24, and one long hole 27 is It is arranged at the center in the left-right direction T2 on the front side of the shelf support plate 24. Further, as shown in FIG. 5, the shelf board support plate portion 24 of the present embodiment is provided with two positioning holes 28 and 29 that are formed to penetrate from the lower surface to the upper surface with a predetermined interval in the front-rear direction T1. The front-side positioning hole 28 is a positioning hole during mounting operation, and the rear-side positioning hole 29 is a positioning hole during retaining operation.

  In this embodiment, as shown in FIGS. 1 and 3 to 5, the upper surface of the shelf board support plate portion 24 is a shelf board support surface 21, and the shelf board is placed on the shelf board support surface 21. A plate 4 is provided. At this time, screw holes 30 are formed in the lower surface 4b of the shelf board 4 at positions corresponding to the three long holes 27 of the shelf board support plate portion, and the mounting screws 31 such as urea screws are attached to the shelf board support plate. The shelf 4 is attached to the shelf support plate 24 and the bracket 20 by being inserted into the long hole 27 from the lower surface side of the portion 24 and screwed into the screw hole 30 of the shelf 4.

  Further, the shelf plate 4 on the shelf support surface 21 is provided so as to be slidable in the front-rear direction T1 by loosening the attachment screw 31 so that the attachment screw 31 is guided by the long hole 27. Furthermore, the shelf board 4 can be fixed to the shelf board support plate portion 24 of the bracket 20 by tightening the attachment screw 31. That is, in the present embodiment, the fixing means according to the present invention is configured by the long hole 27 of the shelf plate support plate portion 24, the attachment screw 31, and the screw hole 30 of the shelf plate 4.

  Further, as shown in FIG. 5, the lower surface 4b of the shelf board 4 is formed with a positioning projection 33 protruding downward from the lower surface 4b at a predetermined position, and the shelf board 4 is slid to move to a predetermined position on the front side. If the positioning projection 33 is engaged with the positioning hole 28 at the time of the mounting operation of the shelf support plate 24 and the shelf 4 is slid and arranged at a predetermined position on the rear side, the positioning projection 33 becomes the shelf plate. The support plate portion 24 is engaged with the positioning hole 29 during the retaining operation. Thereby, the shelf mounting structure B of the present embodiment is configured such that the shelf plate 4 that slides on the shelf support surface 21 of the bracket 20 is positioned and held at a predetermined position before and after.

  Furthermore, in the shelf mounting structure B of the present embodiment, as shown in FIG. 4, a guide protrusion 4 c is provided on the lower surface 4 b side of the shelf 4. The guide projections 4 c are provided on both side ends of the shelf support plate 24 in the width direction, protrude downward, and extend in the front-rear direction T 1 along each side end of the shelf support plate 24. ing. When the shelf plate 4 slides, the guide projections 4c guide the shelf plate support plate portion 24 and the bracket 20 so as to slide more reliably in the front-rear direction T1 without shifting in the left-right direction T2. The As shown in FIG. 5, a guide groove 35 extending in the front-rear direction T <b> 1 may be provided on the lower surface 4 b side of the shelf board 4, and the shelf board 4 may be slid by being guided by the guide groove 35.

  Next, as shown in FIGS. 3 to 5, the pair of bracket portions 25, 26 are each formed in the same shape and the same flat plate shape, and the upper end portion is connected to the lower surface of the shelf support plate portion 24, The rear end of the shelf plate 4 is disposed on the shelf support surface 21 of the shelf support plate 24 and the rear end 4d of the shelf support plate 24 with the surface directed in the left-right direction T2. The 25a and 26a sides are disposed so as to protrude rearward in the front-rear direction T1.

  Each bracket portion 25, 26 (the rear end of the bracket 20) is provided with a locking claw 22 that is formed in a hook shape that protrudes rearward from the rear ends 25a, 26a and the protruding end side is bent downward. Further, each of the bracket portions 25 and 26 has a plurality of locking claws 22 at predetermined intervals in the vertical direction T3 according to the intervals in the vertical direction T3 of the plurality of locking holes 17 provided in the support base 2. In this embodiment, the bracket portions 25 and 26 are each provided with three locking claws 22.

  On the other hand, as shown in FIG. 3, the retaining mechanism 23 of the present embodiment is a slipper that is provided integrally with the shelf 4 that is slidably supported in the front-rear direction T <b> 1 on the shelf support surface 21 of the bracket 20. The stopper member 36 and the fixing means are provided.

  As shown in FIG. 6, the retaining member 36 of the present embodiment includes a rectangular flat plate-shaped fixing plate 37 and upper and lower end portions 38 a, 39a is connected and formed with a pair of projecting pieces 38, 39 projecting rearward from the rear end portion 37a of the front-rear direction T1 which is the depth direction of the fixed plate 37. The fixing plate 37 is formed with an insertion hole 40 penetrating from the lower surface to the upper surface.

  Further, as shown in FIGS. 3 and 6, the pair of projecting pieces 38 and 39 are formed on both sides in the width direction of the mounting surface 3 of the support base 2 with a distance d3 in the left-right direction T2, and are adjacent to each other in the width direction. It is arranged so as to be equal to the distance d2 between the stop holes 17. Further, the pair of projecting pieces 38 and 39 are formed in the same shape and size, and each projecting piece 38 and 39 is provided with a retaining insertion portion 41 on the projecting end side (the projecting direction front end side). The retaining insertion portion 41 is formed so that the protruding end sides of the protruding pieces 38 and 39 gradually increase in height in the vertical direction T3 from the protruding end in the front-rear direction T1 toward the base end side (rear end side in the protruding direction). The base end side is formed in the front-rear direction T1 with a constant height in the up-down direction T3.

  As shown in FIGS. 3, 5, and 6, the retaining member 36 formed in this way is inserted into the insertion hole 40 from the lower surface of the fixing plate 37, and the fixing screw 42 is attached to the shelf plate 4. By screwing into a screw hole 43 formed on the rear end portion 4d side of the lower surface and fixing the fixing plate 37 to the shelf plate 4, the shelf plate 4 is integrally provided. At this time, the position of the center of the retaining member 36 in the width direction is aligned with the center of the shelf plate 4 in the width direction, and the pair of projecting pieces 38 and 39 extend from the shelf board 4 along the front-rear direction T1. , 39 is arranged so that the retaining insertion part 41 on the protruding end side protrudes rearward. Further, in this state, the protruding pieces 38 and 39 are disposed so as to overlap with the bracket portions 25 and 26 of the bracket 20 in the vertical direction T3. Further, the shelf board 4 is slid rearward on the shelf board support surface 21 of the bracket 20, and the positioning projection 33 of the shelf board 4 is engaged with the positioning hole 29 during the retaining operation of the shelf board support board portion 24. The retaining member 36 is arranged so that the projecting ends (tips) of the projecting pieces 38 and 39 and the projecting ends (tips) of the locking claws 22 of the bracket portions 25 and 26 are substantially in the same position in the front-rear direction T1. It is installed.

  In the shelf mounting structure B of the present embodiment configured as described above, when attaching the shelf 4 to the support base 2 of the cart apparatus A, first, as shown in FIG. The shelf board 4 is slid with respect to the bracket 20 and provided on the front side. At this time, if the shelf plate 4 is slid and placed at a predetermined position on the front side, the positioning projection 33 shown in FIG. 5 engages with the positioning hole 28 at the time of mounting operation of the shelf plate support plate portion 24. The shelf board 4 is positioned and held at a predetermined position on the front side.

  When the shelf plate 4 is thus arranged at a predetermined position on the front side, the retaining member 36 slides forward together with the shelf plate 4, and the engagement provided at the rear ends 25 a and 26 a of the bracket portions 25 and 26 of the bracket 20. The pawl 22 is exposed greatly, and it becomes easy to see for the worker (operator, operator) who is attaching the shelf board 4.

  For this reason, the office worker can easily perform the operation of inserting the locking claw 22 into the locking hole 17 of the support base 2 while holding the shelf plate 4 and the bracket 20 by hand. By inserting and locking, the shelf board 4 and the bracket 20 are attached to the support base 2 in a cantilever state.

  In the present embodiment, as shown in FIG. 7, the shelf board 4 is on the front side with the shelf board 4 attached to the support base 2, and is not disposed at a predetermined position with respect to the support base 2. For this reason, in the shelf mounting structure B of this embodiment, as shown in FIG. 8, after attaching the shelf 4 and the bracket 20 to the support base 2, the worker slides the shelf 4 backward. And disposed at a predetermined position in the rear. At the same time, the mounting screw 31 is tightened to fix the shelf board 4 to the bracket 20.

  Further, when the shelf plate 4 is slid rearward and arranged at a predetermined position on the rear side, the positioning projection 33 of the shelf plate 4 shown in FIG. Thus, the shelf plate 4 that engages with the positioning hole 29 and slides on the shelf support surface 21 of the bracket 20 is reliably positioned and held at a predetermined position on the rear side.

  Further, in the shelf mounting structure B of the present embodiment, the shelf 4 is slid rearward and disposed at a predetermined position on the rear side, and the protrusion of the retaining mechanism 23 provided integrally with the shelf 4 is provided. The retaining insertion portion 41 of the pieces 38 and 39 is automatically inserted into the locking hole 17. Further, in the present embodiment, the retaining insertion portions 41 of the protruding pieces 38 and 39 are inserted into the locking holes 17 in which the uppermost locking claws 17 of the bracket portions 25 and 26 are inserted and locked.

  Then, as shown in FIG. 8, when the protruding pieces 38 and 39 of the retaining mechanism 23 are automatically inserted into the locking hole 17 in this way, the upper ends 38a and 39a of the protruding pieces 38 and 39 and the protruding pieces An interval d4 in the vertical direction T3 between the upper peripheral edge portion 17a of the locking hole 17 into which the pieces 38 and 39 are inserted is the upper end portion 22a of the locking claw 22 and the locking hole 17 into which the locking claw 22 is inserted. It becomes smaller than the distance d5 in the vertical direction T3 between the upper peripheral edge portion 17a. For this reason, when an unexpected external force acts from the lower side of the shelf board 4 (bracket 20), the upper end portions 38a and 39a of the protruding pieces 38 and 39 hit the upper peripheral edge portion 17a of the locking hole 17, and the bracket 20 and The rotation of the shelf board 4 is restricted. As a result, the shelf plate 4 is not rattled and the locking claws 22 are not pulled out of the locking holes 17.

  Further, in the present embodiment, the shelf plate 4 is slid rearward, and the projecting pieces 38 and 39 are automatically placed on the upper end portion 22a of the locking claw 22 and the locking hole 17 into which the locking claw 22 is inserted. The protruding pieces 38 and 39 are inserted above the locking claw 22 and inserted between the peripheral edge portion 17a. For this reason, when an unexpected external force acts on the shelf plate 4, the upper end 22a of the locking claw 22 hits the lower end of the protruding pieces 38, 39, and the upper ends 38a, 39a of the protruding pieces 38, 39 are locked. When it hits the upper peripheral edge portion 17a of the hole 17, the rotation of the bracket 20 and the shelf board 4 is surely restricted.

  Further, in a state where the protruding pieces 38 and 39 are inserted into the locking holes 17, the upper end portions 38 a and 39 a of the protruding pieces 38 and 39 abut against the upper peripheral edge portion 17 a of the locking hole 17, and the interval d 4 therebetween is eliminated. If it keeps, rotation of the bracket 20 and the shelf board 4 can also be eliminated.

  Therefore, in the shelf mounting structure (optional member mounting structure) B and the cart apparatus A of the present embodiment, when the locking claw 22 of the bracket 20 is inserted into the locking hole 17 of the mounting surface 3 of the cart apparatus A. Then, the shelf plate 4 supported so as to be slidable by the bracket 20 is positioned on the front side, and the locking claw 22 of the bracket 20 is greatly exposed to be inserted into the locking hole 17 in an easily viewable state. In addition, the locking claw 22 is inserted into the locking hole 17 to be locked, and the shelf plate 4 disposed on the front side of the predetermined position where the article is placed and used is mounted rearward with the bracket 20 attached. To move to a predetermined position.

  Thus, the shelf plate 4 can be slid and the protruding pieces 38 and 39 of the retaining mechanism 23 provided integrally with the shelf plate 4 can be automatically inserted into the locking hole 17. Further, the shelf plate 4 slid to a predetermined position by the fixing means can be fixed to the bracket 20, and the state in which the protruding pieces 38 and 39 are inserted into the locking holes 17 can be maintained. Further, by releasing the fixing by the fixing means and sliding the shelf plate 4 forward, the protruding pieces 38 and 39 are automatically pulled out from the locking hole 17, and the locking claw 22 of the bracket 20 and the mounting surface 3 are removed. The locking hole 17 can be easily seen, and the shelf plate 4 and the bracket 20 can be easily removed by removing the locking claw 22 from the locking hole 17.

  Then, the shelf plate 4 is slid rearward as described above, and the protruding pieces 38 and 39 are inserted into the locking holes 17 and attached to the cart device A, and the upper ends 38a and 39a of the protruding pieces 38 and 39 are attached. And a distance d4 in the vertical direction T3 between the upper edge portion 17a of the locking hole 17 and a distance d5 in the vertical direction T3 between the upper end portion 22a of the locking claw 22 and the upper peripheral edge portion 17a of the locking hole 17. The protruding pieces 38 and 39 are formed so as to be smaller. Therefore, when an unexpected external force is applied from below the shelf plate 4 (bracket 20), the upper end portions 38a, 39a of the projecting pieces 38, 39 hit the upper peripheral edge portion 17a of the locking hole 17, and the bracket 20 and the shelf The rotation of the plate 4 can be restricted. Accordingly, it is possible to prevent the shelf board 4 from rattling or the latching claw 22 from being pulled out of the engagement hole 17 and being pulled out.

  Therefore, according to the shelf mounting structure B of this embodiment and the cart apparatus A equipped with the same, the locking claw 22 is inserted into the locking hole 17 and locked, and the bracket 20 is mounted and then forward. The protruding pieces 38 and 39 of the retaining mechanism 23 can be automatically inserted into the locking hole 17 by performing an operation of sliding the shifted shelf plate 4 backward and moving it to a predetermined position. As a result, it is possible to reliably prevent the shelf plate 4 from being forgotten to be detached, and to suitably attach the shelf plate 4 so as not to rattle or drop off.

  Further, in the shelf mounting structure B of the present embodiment, the shelf 4 is slid rearward, and the protruding pieces 38 and 39 automatically connect the upper end 22a of the locking claw 22 and the locking claw 22 to each other. It is inserted between the upper peripheral edge 17a of the inserted locking hole 17. Since the protruding pieces 38 and 39 are located above the locking claws 22, when an unexpected external force is applied to the shelf plate 4, the upper end portion 22a of the locking claws 22 hits the lower end portions of the protruding pieces 38 and 39, Further, the upper end portions 38a, 39a of the projecting pieces 38, 39 abut against the upper peripheral edge portion 17a of the locking hole 17, so that the rotation of the bracket 20 and the shelf board 4 can be reliably restricted. Therefore, it is possible to reliably prevent the shelf board 4 from rattling or the latching claw 22 from being pulled out of the engagement hole 17 and being pulled out.

  Further, by arranging the protruding pieces 38 and 39 so as to be inserted between the upper end portion 22a of the locking claw 22 and the upper peripheral edge portion 17a of the locking hole 17, the shelf mounting structure B, by extension, It is also possible to reduce the vertical dimension of the shelf structure composed of the shelf board 4 and the bracket 20 so as to be compact.

  Furthermore, in the shelf mounting structure B of the present embodiment, the shelf plate 4 can be fixed to the bracket 20 by screwing the mounting screw 31 into the screw hole 30 and tightening, and the mounting screw 31 can be loosened. Thus, the shelf plate 4 can be slidably moved in the front-rear direction T1. When the shelf plate 4 is slid in the front-rear direction T3, the mounting screw 31 moves inside the long hole 27 formed with the longitudinal direction facing the front-rear direction T3. Thus, the shelf plate 4 can be reliably moved along the front-rear direction T3 and can be used both as a fixing means and a guide means. Thereby, the retaining mechanism 23 of the shelf board 4 can be configured with a simple structure.

  As mentioned above, although one embodiment of the attachment structure of the optional member (the attachment structure of the shelf board) and the cart apparatus provided with the same according to the present invention has been described, the present invention is not limited to the above one embodiment, Changes can be made as appropriate without departing from the spirit of the invention.

  For example, in the present embodiment, the protruding pieces 38 and 39 of the retaining mechanism 23 have been described as being inserted into the locking holes 17 into which the locking claws 22 are inserted and locked. On the other hand, for example, as shown in FIG. 9, the shelf board (option member) 4 is slid and the protruding pieces 38 and 39 provided integrally with the shelf board 4 do not insert the locking claws 22. It is inserted into the locking hole 17, and the upper end portions 38 a, 39 a of the protruding pieces 38, 39 are configured to restrict the rotation of the shelf plate 4 and the bracket 20 by hitting the upper peripheral edge portion 17 a of the locking hole 17. Also good.

  Further, at this time, if the height dimension in the vertical direction of the protruding pieces 38 and 39 of the portion to be inserted into the locking hole 17 is made equal to the vertical dimension of the locking hole 17, the protruding pieces 38 and 39 are formed. The distance d4 between the upper end portions 38a and 39a of the upper end portion 38a and the upper peripheral edge portion 17a of the locking hole 17 is eliminated, and the rotation of the bracket 20 and the shelf board 4 can be eliminated.

  Further, as shown in FIG. 10, for example, the bracket portions 25 and 26 of the bracket 20 are formed so as to be gradually inclined upward from the shelf support plate portion 24 to the rear, and the locking claws 22 of the bracket 20 and the retaining mechanism are formed. You may comprise so that the locking hole 17 in which the protrusion pieces 38 and 39 of 23 are inserted may differ.

  Moreover, in this embodiment, although the attachment structure B of optional members, such as a shelf board, a tray, and a box, provided in the cart apparatus A has been described, it is not necessary to limit the furniture of the present invention to the cart apparatus A. The attachment structure of the optional member concerning this invention is applicable as a structure for attaching optional members, such as a shelf board, a tray, and a box, to all fixtures, such as furniture.

1 Base 2 Support base (support)
3 mounting surface (shelf mounting surface)
4 shelf board (optional material)
4a upper surface 4b lower surface 4c guide projection 4d rear end 5 top plate 5a rear end 6 operation handle 6a operation bar 6b mounting bar 7 operation lever 8 electronic device unit 10 leg rod 11 caster 12 outer column 13 inner column 14 outer 15 covered Mounting bracket 16 Mounting groove 17 Locking hole 20 Bracket 21 Shelf board support surface (optional member support surface)
22 Locking Claw 23 Retaining Mechanism 24 Shelf Board Support Plate (Option Member Support Plate)
25 Bracket part 25a Rear end 26 Bracket part 26a Rear end 27 Long hole (fixing means)
28 Positioning hole 29 during mounting operation Positioning hole 30 during retaining operation Screw hole (fixing means)
31 Mounting screws (fixing means)
33 Positioning projection 35 Guide groove 36 Retaining member 37 Fixing plate 38 Protruding piece 38a Upper end portion 39 Protruding piece 39a Upper end portion 40 Insertion hole 41 Retaining prevention insertion portion 42 Fixing screw 43 Screw hole A Cart device (furniture)
B Shelf board mounting structure (Option member mounting structure)
T1 Front-back direction T2 Left-right direction T3 Up-down direction

Claims (4)

A hook-like shape that is formed on the mounting surface of the fixture with a plurality of locking holes drilled at intervals in the vertical direction and protruding rearward from the rear end of the bracket that supports the optional member, and the protruding end bends downward An optional member mounting structure comprising a locking claw for detachably mounting the bracket in a cantilever state by being inserted into the locking hole and locked.
The option member is supported so as to be slidable in the front-rear direction on the option member support surface of the bracket, and is provided integrally with the option member, and protrudes backward from the option member in the front-rear direction, A retaining mechanism having a fixing means for fixing the optional member to the bracket;
The bracket is attached to the mounting surface, the option member is slid rearward and the protruding piece is inserted into the locking hole, and the upper end of the protruding piece and the locking hole into which the protruding piece is inserted. The vertical distance between the upper peripheral edge portion of the engaging claw and the upper peripheral edge portion between the upper end portion of the engaging claw and the engaging hole into which the engaging claw is inserted is smaller. The projecting piece is formed on an optional member mounting structure. In the optional member mounting structure according to claim 1,
The protruding piece is inserted into the locking hole into which the locking claw is inserted, and is inserted between the upper end portion of the locking claw and the upper peripheral edge of the locking hole into which the locking claw is inserted. An optional member mounting structure characterized by being configured as described above. In the mounting structure of the optional member according to claim 1 or 2,
The fixing means has a long hole formed through the bracket with the longitudinal direction facing the front-rear direction, a screw hole provided in the option member, and a screw hole in the option member inserted through the long hole of the bracket. Mounting screws to be screwed to
The fixing means also serves as a guide means for sliding the option member in the front-rear direction on the option member support surface of the bracket by moving the mounting screw in the front-rear direction along the elongated hole. Features optional member mounting structure. A cart device comprising a base provided with casters, a support base standing upright from the base, and an optional member detachably attached to the support base, and configured to be able to run by the casters of the base. And
A cart apparatus comprising the optional member mounting structure according to any one of claims 1 to 3.

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