JP2007117493A - Desk - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a highly flexible desk system excellent in a wiring function, a hiding function and strength. <P>SOLUTION: The desk is provided with a top plate, support bodies such as a leg or a sleeve cabinet and a back surface member 3 overlapped with the left and right support bodies from the rear part. The top plate and the support bodies are connected by metal fittings and the support bodies and the back surface member 3 are connected. The back surface member 3 is composed of a gate-shaped outer frame body 15 composed of side frames 13 and an upper frame 14 and a panel body 16 height-adjustably attached to the left and right side frames 13. The panel body 16 is turned to a rigid structure by forming folded-over parts 20 and 21 on four sides. A desk group is constituted by sharing the support bodies and the back surface member 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a desk in which members are unitized.

  Desks for office use have a structure in which the top plate is supported by a support such as a leg or a sleeve cabinet (wagon). Generally, each desk is independent, but in such a configuration, When a large number of desks are arranged side by side, a support such as a leg is wasted when viewed as a whole desk group.

  Therefore, the applicant of the present application, in Patent Document 1 related to the prior application, in a desk that supports the top plate with a support such as a leg or a sleeve cabinet, a left and right support with a rigid structure back frame that overlaps the back surface. We proposed a desk made by connecting top plates to left and right supports. Further, in Patent Document 1, the top plate and the back frame arranged side by side can be connected to one support body, and the support bodies can be connected to the front surface and the rear surface of the back frame, respectively. Proposed.

On the other hand, as a desk having another structure, Patent Document 2 discloses that a horizontal frame-like wiring upper frame material is fixed to the upper end of the curtain plate, and a vertical-long vertical hook-like wiring is attached to the left and right ends of the curtain plate. The side frame material is fixed, the upper frame material is fixed to the top plate with screws, and the side frame material is fixed to the legs and the sleeve cabinet with screws. Furthermore, Patent Document 3 discloses that the height of the curtain plate can be changed in a desk in which a non-rigid curtain plate that has only a blindfold function is fixed to the leg, so that a wiring space is provided above the curtain plate. A desk that can be opened or closed is disclosed.
Japanese Patent Application Laid-Open No. 2004-337452 No. 07-16330 JP 2005-137707 A

  According to Patent Document 1, a. The overall rigidity can be ensured with a simple connection structure by forming the back frame with a strength member of the desk, b. Can be connected to one support body, so the number of members can be reduced in constructing a multiple desk system in which unit desks are arranged side by side. C. Support units can be connected to both the front and back sides of the back frame. This is advantageous in that the number of members can be suppressed in the configuration of the desk system in which the components are arranged back to back.

  On the other hand, since the desks of Patent Documents 2 and 3 are independent, one member cannot be suppressed in a multiple desk system or a back-to-back desk system. Moreover, it can be said that the curtains of Patent Documents 2 and 3 do not have or have a weak function as a strength member for ensuring the rigidity of the desk.

  An object of the present invention is to further develop the idea of the prior application, to further improve the rigidity of the desk, and to provide a desk that takes into account the wiring function and the blindfold function.

  As a more improved desk, the invention of claim 1 includes a top plate, a support member that supports the top plate on both the left and right sides, and a back member having a rigid structure that overlaps the rear part of the left and right support members, In the desk where the top plate is connected to the left and right supports and the overall rigidity is maintained by connecting the back member to the left and right support means, the back member is a vertically long left and right side frame connected to the support. The left and right side frames are composed of an outer frame body having a horizontally long horizontal frame connected to the upper end or lower end or both upper and lower ends, and a panel body fixed to the left and right side frames.

  According to a second aspect of the present invention, in the first aspect, the outer frame body of the rear member is formed in a front portal shape with left and right side frames and an upper horizontal frame connected to the upper end of the left and right side frames. The panel body of the member is made of a substantially rectangular metal plate when viewed from the front, and the rigidity is enhanced by forming a folded portion around the four sides, and the panel body is fixed to the left and right side frames in a state where the height can be changed. Yes.

  According to a third aspect of the present invention, in the first or second aspect, the side frame of the back member is overlapped with the back surface of the support member, and the rear connecting means is connected to the back surface of each support member with one side frame. The two rear members arranged side by side are allowed to be connected to one support body, and the end of one top plate is connected to the upper surface of the support body. By arranging the upper connecting means arranged side by side, it is allowed to connect the top plate arranged side by side to one support.

  According to the first aspect of the present invention, the table can be configured with a simple connection structure by reinforcing the top plate, the support, and the back member together as in Patent Document 1, but the back member is an outer frame. By reinforcing the material and the panel body to each other, the rigidity (strength) can be increased as compared with the case of only the outer frame material, and therefore the strength of the desk can also be improved. Further, since the panel member of the back member can be made to function as a blindfold curtain plate and a wiring space can be easily opened above the panel member, the value as a desk can be further improved.

  By the way, when two desks are placed back to back, cables are routed between the insides of both desks. In this case, points such as prevention of user's feet from being caught and easy cleaning. Therefore, it is preferable to process the cables at a position as high as possible without placing them on the floor. In this respect, if the configuration as in claim 2 is adopted, it is possible to easily make a wiring space between the upper horizontal frame and the panel body by changing the mounting height position of the panel body with respect to the side frame. Can accurately meet the demands of

  Further, since the panel body holds the rigid body, the overall rigidity as the back member can be increased even if the outer frame material is a gate shape. Further, the lower end of the panel body can protrude from the lower surface of the side frame, and therefore the range of height adjustment of the panel body can be widened.

  Furthermore, as shown in the embodiment, it is preferable that the left and right side portions of the panel body and the side frames are fitted to each other, so that the rigidity of the back member can be further improved. If it forms, since a panel body can be inserted in a side frame in the state which assembled the outer frame material, there also exists an advantage that an assembly of a back member can be performed easily.

  According to the third aspect of the present invention, in the configuration of a multiple desk system in which unit desks are arranged side by side, support units such as legs are shared by the unit desks adjacent to the left and right. Members can be suppressed in configuring the system (this is the same as in Patent Document 1).

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

(1) Overall Overview FIG. 1A is an external perspective view of a desk system (desk group). A multi-desk system is configured by arranging unit desks 1 side by side, and two multi-desk systems are provided. A continuous desk system is placed back to back. FIG. 1B is a perspective view of one multiple desk system as viewed from the rear.

  As can be understood from this figure, each unit desk 1 is provided with a top plate 2 having a rectangular shape in plan view and a back member 3 arranged behind the top plate 2, and each top plate 2 has legs 4 or left and right arranged. The back member 3 is supported by the sleeve cabinet 5, and the left and right ends of the back member 3 overlap the legs 4 or the back of the sleeve cabinet 5. That is, the unit desks 1 that are adjacent to each other on the left and right share the legs 4 or the sleeve cabinets 5 that support the top plate 2, and the unit desks 1 that are arranged back to back share the back member 3. Yes.

  The upper surface of the back member 3 and the upper surface of the top plate 2 are substantially the same height (of course, different heights may be used), and a wiring space opened vertically between the top plate 2 and the back member 3. Is vacant. In other words, by shifting the back surface of the top plate 2 to the front side (user side) from the back surface of the legs 4 or the sleeve cabinet 5, a wiring space having upper and lower openings is formed behind the top plate 2.

  Although details are omitted, a wiring cover 6 covering the wiring space can be detachably attached to the back member 3. In addition, a wiring receiving rod 8 can be attached to the back member 3 via a plurality of left and right brackets 7.

  The legs 4 and the sleeve cabinet 5 are supported by an adjuster device 9 so as to be adjustable in height. The sleeve cabinet 5 is provided with a plurality of drawers, but it is also possible to adopt an open system without a drawer. A desktop panel 10 can be detachably attached to the back member 3.

  The support mode of the top plate 2 can be freely set as necessary. For example, when the horizontal width of the top plate 2 is small (for example, 600 to 900 mm), generally, the sleeve cabinet 5 will not be used and only the legs 4 will be used. When the lateral width is larger than a certain level (for example, 1200 to 2000 mm), each top plate 2 will be supported by the sleeve cabinet 5 except for the unit desk 1 at the left end.

  The leg 4 of the present embodiment is a so-called L leg in which the upper arm 11 and the lower arm 12 protrude from the hollow plate-like base portion 4a toward the front. It is also possible to form a thick plate shape, or to form a rectangular frame shape in a side view.

  As shown in FIG. 1B, the back member 3 includes a vertically long left and right side frame 13 connected to the leg 4 or the sleeve cabinet 5 and a horizontally long upper horizontal frame (hereinafter referred to as “upper left horizontal frame”) connected to the upper ends of the left and right side frames. (Referred to as “upper frame”) 14 and a panel body 16 fixed to the left and right side frames 13, and caps 31 made of synthetic resin are attached to the upper and lower ends of the side frame 13. Both the upper frame 14 and the side frame 13 are made of extruded products of light metal such as aluminum, but it is also possible to use square steel pipes or sheet metal products.

  Needless to say, when the left and right unit desks 1 share the legs 4, the top plate 2 and the back member 3 overlap each other on the left and right sides across the longitudinal center line of the legs 4. On the other hand, when the sleeve cabinet 5 is shared by the left and right unit desks 1, in this embodiment, since the user is right-handed to open the drawer with the right hand, the left end portion as viewed from the user of the top 2. Overlaps with the right end of the sleeve cabinet 5, and the sleeve cabinet 5 supports a large area on the right side of the top plate 2 as viewed from the user. Of course, the right end of the top board 2 as viewed from the user can be overlapped with the left end of the sleeve cabinet 5, or the left and right top boards 2 can be supported by the left and right halves of the upper surface of the sleeve cabinet 5. is there.

  As shown in FIG. 1B, in the present embodiment, a space 17 that can be wired is vacant between the upper frame 14 and the panel body 16, and between the upper frame 14 and the panel body 16, A detachable spacer 18 is disposed. The spacer 18 is for preventing downward bending of the upper frame 14, and is not necessary when the left and right length dimensions of the back member 3 are smaller than a certain level (for example, about 1200 mm).

(2) Details of the Back Member Next, the back member 3 will be described mainly with reference to FIGS. When the unit desks 1 are arranged back to back, it is difficult to identify the back member 3 as front or back or front and back, but in the following description, for the sake of convenience, the directions of front view and back view displayed in FIG. It will be described on the basis of.

  2 is a rear view of the back member 3, FIG. 3 is an exploded perspective view of the back member 3, FIG. 4A is a cross-sectional view taken along the line IVA-IVA of FIG. 2, and FIGS. 5A is a partial rear view of the back member 3, FIG. 5B is a partial cross-sectional view, and FIG. 5C is a cross-sectional view taken along the line CC in FIG. , (D) is a sectional view taken along the line DD of (A), (A) is a separated rear view of FIG. 6, (B) is a rear view with the panel body 16 in a high position, and FIG. FIG. 8 is a side view showing an example of the usage state of the desk, and FIG. 9 is a view showing the relationship between the back member 3, the legs 4 and the sleeve cabinet 5.

  The panel body 16 which comprises the back member 3 consists of a steel plate, and rigidity is improved by forming the square folding | turning parts 20 and 21 in the four periphery. The folded portions 20 and 21 have inwardly facing pieces 20a and 21a. The front-rear width dimensions of the left and right folded parts 21 and the upper and lower folded parts 20 are the same, and the front-rear width dimensions of the folded parts 20, 21 are smaller than the front-rear width dimensions of the side frame 13 and the upper frame 14. It has become. The folded portions 20 and 21 are bent to the front side because the rear surface is touched by the human eye when the unit desk 1 is used not as a back-to-back specification but as a single unit.

  On the front surface of the panel body 16, a horizontally long reinforcing material 22 that overlaps with the panel body 16 and forms a cylindrical shape is fixed by welding. When the left and right length of the back member 3 is short (for example, 900 mm or less), the reinforcing material 22 is not necessarily required. In addition, when providing the reinforcing material 22, you may arrange | position in multiple steps.

  For example, as can be easily understood from FIG. 3, the upper frame 14 of the back member 3 is generally hollow and has a cross-sectional shape close to a square shape, and the upper surface is a flat surface without grooves and protrusions, while the front and back surfaces are both On the (front and rear surfaces), a horizontal first groove 23, a horizontal second groove 24, and a horizontal third groove 25 are formed in order from the top, and a downward groove 26 is formed on the lower surface.

  As clearly shown in FIG. 4, the first lateral groove 23 is a dovetail due to the presence of the downwardly upward upper lip 23a, and the second lateral groove 24 is a dovetail due to the presence of the upward middle lip 24a. The three grooves 25 are dovetails due to the presence of the downwardly facing lower lip 25a, and the downward groove 26 is a two-stage dovetail due to the presence of the inwardly lowering lip 26a and the inwardly uppering lip 26b. The upper bottom of the downward groove 26 is partitioned by a partition wall 27. The upper bent portion 20 above the panel body 16 is set so as to be able to fit into the lower portion of the downward groove 26.

  For example, as shown in FIGS. 5C and 5D, the side frame 13 also has a hollow rectangular shape as a whole, and has an inward vertical groove 28 into which the left and right bent portions 21 of the panel body 16 fit tightly, and an outer side. An outward vertical groove 29 that is open is formed. The outward vertical groove 29 is a dovetail groove having a pair of front and rear inward lips 29a. Further, an inner vertical groove 30 having a shape in which a part of a cylinder is vertically cut is integrated in the side frame 13. Is formed. The front and rear surfaces of the side frame 13 are flat. Resin caps 31 are attached to the upper and lower ends of the side frame 13.

  As shown in FIGS. 3 and 5B, the upper frame 14 and the side frame 13 use L-shaped joint fittings 32 and screws 33 that overlap the partition wall 27 of the upper frame 14 and the inner side surface of the side frame 13. Are connected. The inward groove 28 of the side frame 13 has a window hole 34 for inserting the joint fitting 32. In assembly, the joint fitting 32 is first fixed to the side frame 13, and then the joint fitting 32 is fixed to the upper frame 14. Needless to say, the side frame 13 and the upper frame 14 may employ other connection structures (for example, welding).

  The left and right folded portions 21 of the panel body 16 are fixed to the inward vertical grooves 28 of the side frames 13 with a plurality of upper and lower (two) screws (for example, tapping screws) 35. The height of the panel body 16 is adjusted in two stages: a high position where the upper end of the panel body is partially fitted in the downward lateral groove 26 of the upper frame 14 and a low position where the wiring space 17 is vacant between the upper frame 14. In this case, as shown in FIGS. 3 and 4, the upper screw through hole 36 is formed as an elongated vertical hole, and the lower round screw through hole 37 is provided in two upper and lower portions. Yes.

  If the screw through holes 36 and 37 are configured in this manner, the upper screw through hole 36 is a long hole, so that the panel body 16 can be prevented from falling when the height is adjusted, and the lower screw through hole can be prevented. Since 37 is not a long hole, there is no problem that the panel body 16 slides down even when a downward load is applied.

  As shown in FIG. 5C, a shallow recess 28a is formed on the bottom surface of the inward vertical groove 28 of the side frame, while the left and right folded portions 21 of the panel body 16 are made of a resin that hits the recess 28a. A slider 38 is attached. For this reason, when adjusting the height of the panel body 16, it is possible to smoothly move up and down. In the present embodiment, the panel body 16 is set so that the lower end thereof is aligned with the lower end of the side frame 13 when the panel body 16 is in the low position. Therefore, as shown in FIG. The side frame 13 protrudes below the panel body 16.

  The front plate and the rear plate of the side frame 13 in the back member 3 have a pair of upper and lower engaging holes 39 as part of a connecting means for connecting the side frame 13 to the leg 4 or the sleeve cabinet 5. In addition, a horizontally elongated slit-like stopper hole 40 is provided at the upper end of the front plate and the rear plate of the side frame 13.

  The engagement hole 39 is a so-called dharma hole in which the large-diameter portion 39a and the small-diameter portion 39b communicate with each other, but is fitted into the engagement hole 39 on the back surface of the leg 4 and the sleeve cabinet 5 as a part of the connecting means. A headed pin 41 is projected. In order to make it possible to connect the back member 3 arranged side by side to one leg 4 and the sleeve cabinet 5, the headed pins 41 are provided on the leg 4 and the sleeve cabinet 5 in two sets on the left and right.

  9, (A) is a side view of the side frame 13, (B) is a rear view of the side frame 13, (C) and (E) are side views of the legs 4 and the sleeve cabinet 5, and (D) is a side frame. 13, and as shown in these drawings, the orientation of the front engagement hole 39 and the rear engagement hole 39 is upside down, and both the front and rear engagement holes 39 have a small diameter portion 39b. The center is the same height.

  Therefore, when the unit desks 1 are connected back to back, when assembling the unit desk 1 on the back, the side frame 13 is dropped on the head 4 of the leg 4 or the sleeve cabinet 5 while the unit desk 1 on the front side is assembled. Will lift the leg 4 or the sleeve cabinet 5 and drop the headed pin 41 into the engagement hole 39.

  In the case of the double-sided use specification in which the unit desks 1 are arranged back to back, the blinding function of the back member 3 is not necessary so that the vertical width of the back member 3 is sufficient if it has a size necessary to ensure strength. On the other hand, in the case of the single-sided use specification in which the back of the unit desk 1 is exposed, it is necessary to enhance the blindfold function, so that the back member 3 extends up and down to a position close to the floor as shown in FIGS. 7 and 8B. It is preferable to set the width.

  Further, the horizontal first groove 23 and the horizontal second groove 24 of the upper frame 14 are used for attaching a cover that covers the space behind the top plate 2, but in a single-sided desk, the cover is arranged only on the front side. Therefore, as shown in FIG. 4C, the first lateral groove 23 and the second lateral groove 24 are not formed on the rear surface of the upper frame 14. The transverse third groove 25 is also formed on the rear surface, which is for use in attaching a decorative board (not shown). The lateral third groove 26 is also used for mounting the wiring receiving bracket 7.

  By the way, when the Dalma-shaped engaging hole 39 and the headed pin 41 are used as a connecting means between the support member such as the leg 4 and the sleeve cabinet 5 and the back member 3, the engaging hole 39 is simply formed in the side frame 13. When the back member 3 or the leg 4 and the sleeve cabinet 5 are lifted up and the headed pin 41 is removed from the engaging hole 39, the neck of the headed pin 41 becomes the large diameter portion 39 a of the engaging hole 39. There is a problem that it is difficult to remove by being fitted to the inner periphery of the. This can be dealt with by making the headed pin 41 into a shape that fits only into the inner periphery of the small-diameter portion 39a. However, in this method, the headed pin 41 has directionality, so processing and mounting work are troublesome. Become. Therefore, in the present embodiment, the configuration shown in FIG. 10 is used.

  10A is a front view (or a back surface portion) of the engagement hole 39, and FIG. 10B is a cross-sectional view taken along the line B-B of FIG. In the embodiment, an inward convex portion is formed by inwardly bending (or stepping) a range of about a half circumference located on the opposite side to the small diameter portion 39b of the inner peripheral edge of the large diameter portion 39a of the engagement hole 39. 39c is formed. The inward projecting dimension L1 of the inward convex part 39c is set to be larger than the length L2 of the neck part of the headed pin 41. For this reason, it is possible to prevent the neck portion from fitting into the inner peripheral edge of the large-diameter portion 39 a of the engagement hole 39 while the pin 41 has a simple shape in which both the head and the neck are circular.

  The inward convex portion 39c may be formed only on the opposite side and the end portion of the small diameter portion 39a. Moreover, the inward convex part 39c can also be formed, for example, by welding a plate material, or by performing welding overlay. Further, such a connection structure can be widely applied not only to desks but also to connection means between members in furniture and the like (members may be horizontal).

(3). Connection Structure of Top Plate, Leg, and Sleeve Cabinet Next, the connection structure of the top plate 2, the leg 4, and the sleeve cabinet 5 will be described mainly with reference to FIG. 11A is an exploded perspective view showing a connection structure between the front portion of the top plate 2 and the legs 4, FIG. 11B is a perspective view of the front metal fitting 43, and FIG. 12 shows the rear portion of the top plate 2 and the legs 4. FIG. 13 is an exploded perspective view showing a means for preventing vertical displacement between the back member 3 and the leg 4, FIG. 14 is a partial plan view of a desk using both sides, and FIG. 16 is a cross-sectional view taken along line XV-XV, FIG. 16 is a plan view showing the connection relationship between the top board 2 and the sleeve cabinet 5, FIG. 17 is a partially enlarged view of FIG. 16, and FIG. A sectional view taken on line A, (B) is a sectional view taken along line BB in FIG. 16, (A) is a partial plan view of the desk, and (B) is a sectional view taken along line BB in FIG. is there.

  The top plate 2 includes a surface plate 44 that constitutes an upper surface thereof, a left and right longitudinal front reinforcing frame 45 that supports the front portion of the surface plate 44, a rear reinforcing frame 46 that supports the rear portion of the surface plate 44, and front and rear reinforcement. An intermediate reinforcing frame (not shown) positioned between the frames 45, longitudinal longitudinal side reinforcing frames 47 fixed to both left and right ends of the reinforcing frame group, a resin side edge 48 and a rear edge 49 are provided.

  The front and rear reinforcing frames 45 and 46 have substantially the same cross-sectional shape, and have a portion that overlaps the surface plate 44 and a rectangular bowl-shaped portion 50 that projects downward. Also, an auxiliary reinforcing member 51 having a substantially U-shaped cross section is disposed inside (the auxiliary reinforcing member 51 of the rear reinforcing frame 46 is omitted in FIG. 15).

  For example, as can be easily understood from FIG. 11, a front metal fitting (front metal fitting) 43 is fixed to the lower surface of the square bowl-shaped portion 50 in the front reinforcing frame 45 with a bolt 52 (may be welded). The front metal fitting 43 is formed in a substantially downward-opening U-shape in front view in which the hook-like engagement claws 53 facing rearward are arranged on the left and right sides when viewed from the side, and is fixed to a concave groove portion 50 a formed in the square hook-like portion 50. . The engagement claws 53 are increased in strength by being folded back into a double stack. Further, the upper surface of the front metal fitting 43 is provided with a trapezoidal rearward projecting portion 43a, and positioning is performed by fitting the rearward projecting portion 43a into a square hole 54 formed in the wall surface of the concave groove portion 50a in the square bowl-shaped portion 50. ing.

  On the other hand, the upper arm 11 of the leg 4 is formed in a bowl shape that opens upward, and a front support body 55 having a substantially U-shaped side cross-section is fixed to the front portion thereof by welding. The engagement claw 53 of the front metal fitting 43 forms a pair of left and right engagement holes 56 for engaging and disengaging from the front-rear direction. The engagement hole 56 extends to the front side plate 55a of the front support 55, and the upper arm 11 is fitted with a spacer 57 for making a slight gap between the top support 2 and the top plate 2. is doing.

  Therefore, the engagement claw 53 can be easily engaged with and disengaged from the engagement hole 56 by sliding the top plate 2 on the upper arm 11 and then sliding it backward. An inward flange 11 a is formed at the upper end of the upper arm 11.

  The rear end portion of the inner surface located on the left and right outer sides of the inner surface of the engagement hole 56 is an inclined surface 56a that is inclined toward the longitudinal longitudinal center line 58 of the leg 4 toward the rear end. Thereby, the top plate 2 is guided so as to slide toward the longitudinal longitudinal center line 58 of the legs, and as a result, in configuring a multiple desk system, the side end surfaces of the left and right top plates 2 can be brought into close contact with each other. it can.

  For example, as shown in FIGS. 12 and 15, a rear metal fitting (rear connecting metal fitting) having a protruding piece 61 exposed at the rear of the top board 2 is provided on the square flange 50 of the rear reinforcing frame 46 constituting the top board 2. 60 is fixed by a bolt 62, and a rear support 63 having a substantially U-shaped side section is fixed to the rear of the upper arm 11 of the leg 4 by welding. A female screw hole (nut) 65 for fixing the protruding piece 61 of the metal fitting 60 with a bolt 64 is provided.

  The female screw holes 65 are distributed and arranged on both sides of the upper arm 11 across the longitudinal longitudinal center line 58. When the left and right top plates 2 are supported by one leg 4, the protruding piece 61 of the rear metal fitting 60 protrudes outside the leg 4 as shown in FIG. 14. When one top plate 2 is supported by one leg 4, the left and right projecting pieces 61 overlap the upper arm 11 as shown in FIG.

  The rear support 63 has fallen slightly below the upper surface of the upper arm 11, and thus the projecting piece 61 of the rear metal fitting 60 has been stepped down from the portion in close contact with the top plate 2. Further, on the front and rear sides of the rear metal fitting 60 with the bolt holes 66 for fixing to the top plate 2 sandwiched, convex ridges 60a are formed, while the rectangular bowl-shaped portion 50 of the rear reinforcing frame 46 constituting the top plate 1 is formed. Is formed with a stepped portion 50b on which the ridge 60a on the front side overlaps. In addition, the rear metal fitting 60 has an upward positioning protrusion 60b extruded, while a positioning hole 67 in which the positioning protrusion 60b fits is formed in the square flange 50 of the rear reinforcing frame 46 in the top plate 2. Yes.

  As described above, although there is a slight gap between the upper surface of the leg 4 and the lower surface of the top plate 2, the rear metal fitting 60 also has a role of a spacer for making a gap. In this case, a downward projection 60c that overlaps the flange 11a of the upper arm 11 is formed on the front portion of the rear metal fitting 60 by extrusion.

  Two fixing bolt holes 66 of the rear metal fitting 60 are formed in a state where the left and right parts are separated from each other. This prevents the head of the bolt 62 from interfering with the inward flange of the upper arm 11, and This is to make the metal fitting 60 common to the left portion and the right portion of the top plate 2 (when bolt holes 66 are formed in the left and right intermediate portions, the bolts 64 interfere with the inward flange of the upper arm 11). Moreover, the bolt hole 68 of the overhanging piece 61 in the rear metal fitting 60 is a long hole in the longitudinal direction.

  As a means for holding the top plate 2 so as not to move back and forth, it is possible to screw a bolt inserted into the upper arm 11 of the leg 4 from below into the top plate 2 or use a stopper claw that is elastically deformed. In the case of the former, there is a problem that the assembly work is troublesome because a person has to bend and work, and the appearance of the bolt is bad because the bolt is exposed, while in the case of the latter, a high fixing strength is secured. There are problems that are difficult and time-consuming to disassemble.

  On the other hand, when the projecting piece 52 of the rear metal fitting 60 is exposed to the rear of the top plate 2 as in the present embodiment, the operator does not have to bend down, so that the assembling and disassembling operations are easy and the fixing is high. Strength can be secured.

  If the combination of the headed pin 41 and the dharma-shaped engagement hole 39 is used as a connecting means between the leg 4 and the sleeve cabinet 5 and the back member 3 as in the embodiment, the back member 3 is moved up and down when the desk is lifted, for example. A means to keep it immovable is needed. In this embodiment, a stopper fitting 69 is fixed to the rear support 63 of the upper arm 11 with a bolt 70 (for this reason, a stopper fitting female screw hole 65 ′ is provided in the rear support 63). The provided stopper claw 69 a is fitted in the stopper hole 40 of the side frame 13 in the back member 3.

  Two stopper claws 69a are provided on the left and right sides. When one leg 4 is shared by the left and right rear members 3, the left and right stopper claws 69a are respectively provided in the stopper holes of the rear member 3, as shown in FIG. 40. On the other hand, when only one back member 3 is connected to one leg 4, as shown in FIG. 19, one stopper claw 69a is fitted in the stopper hole 40 of the back member 3, and the other stopper claw 69a is a back member. 3 is fitted in the second lateral groove 24 of the upper frame 14.

  That is, by using the second lateral groove 24 of the upper frame 14 as an escape groove for the stopper claw 69a, the case where one back member 3 is connected to one leg 4 or two right and left back members 3 are connected. In both cases, one stopper bracket 69 is sufficient.

  The main body of the sleeve cabinet 5 includes a front sill (front reinforcing member) 71 and a rear sill (rear reinforcing member) 72 fixed to the side plate, and the top plate 2 is connected to both the stiles 71 and 72. Between the front and rear stakes 71 and 72 is a space opened upward. The connection between the sleeve cabinet 5 and the top board 2 is basically the same as the connection with the legs 4, and the metal fittings 43, 60 and 69 are the same as those already described. The front sill 71 is provided with a reinforcing member 73 having an uneven cross section, and the engagement hole 53 is formed in the reinforcing plate 74.

  Since the sleeve cabinet 5 has a considerable lateral width, two front metal fittings 43 and two rear metal fittings 51 are used in order to maintain strength and stability. In this case, as shown in FIGS. 16 and 17, the left and right engagements of the front metal fitting 43 are performed both when the sleeve cabinet 5 supports the left and right top plates 2 and when the top plate 2 is supported. Three front engaging holes 56 are formed so that the claws 53 fit into the engaging holes 56. For this reason, the attachment strength of the sleeve cabinet 5 and the top plate 2 can be improved.

  In FIG. 16, two stopper brackets 69 are shown on the left and right. However, since the stopper bracket 69 is fitted into the side frame 13 of the back member 3, usually only one is used (of course, two can be used). Is).

(4) Summary As described above, the unit desk 1 is configured with the top plate 2 and the legs 4 or the sleeve cabinet 5 and the back member 3 as strength members, and the top plate 2 and the legs 4 or the sleeve cabinet 5. Since the leg 4 or the sleeve cabinet 5 and the back member 3 can be easily connected and separated, it is not only easy to configure the unit desk 1, but also a multiple desk system or a back-to-back desk system. And increasing the number of existing desk systems or conversely reducing the number of desks.

  Further, since the height of the panel body 16 of the back member 3 can be changed, it is possible to easily change between a mode in which the wiring space is opened and a mode in which the wiring space is not opened.

(5). Another form of back member (Fig. 20)
FIG. 20 shows another example of the back member 3. In this embodiment, while forming the convex part 13a formed in the side frame 13, the groove part 20c of outward opening is formed in the right-and-left both folded part 20 of the panel body 16, and both fit. Further, front and rear longitudinal vertical grooves 13a are formed on the front plate and the rear plate of the side frame 13, and the coupling engagement holes 39 are formed in a square shape in communication with the front vertical grooves 13a. On the other hand, the headed pin 41 is formed in a square shape.

  One of the features of this embodiment is that various members can be attached using the front vertical groove 13a. For example, when the desk is a single-sided specification that is not back-to-back, it can be used to attach a decorative board 75 that covers the back. Specifically, the claw 75a provided on the decorative plate 75 can be retained so as not to be detachable backward by fitting it into the front vertical groove 13a from above. As a means for preventing the decorative plate 75 from dropping, a bracket 76 may be fixed to the lower surface of the side frame 13 with a screw 77 and received by the bracket 77. Alternatively, a bracket piece of the decorative plate 75 may be provided and used as a side frame. You may fix to the lower surface of 13 with a screw. The screw 77 is screwed into the inner vertical groove 30 of the side frame 13.

  By inserting one shielding plate 78 into the outward vertical groove 29 of the adjacent side frame 13, light can be prevented from leaking from the gap between the adjacent side frames 13 (this point is the first embodiment). Is the same).

(6). Others Although one embodiment of the present invention has been described, the present invention can be embodied in various ways. For example, the outer frame constituting the back member 3 may be a quadrangle having a side frame and upper and lower horizontal frames, and the panel body may be attached to the left and right side frames so that the height can be adjusted.

  Moreover, as a structure which connects a back member and a support body, not only the combination of an engagement hole and a pin with a head but the combination of an engagement claw and an engagement hole, etc. are employable. In any case, an engagement hole can be formed in the support, and a headed pin or an engagement claw can be provided on the back member. Further, the top plate can be made of wood or resin, and the connecting means between the top plate and the support can adopt various structures (in any case, it is preferable that connection and release can be performed freely). . In the case of a desk with a large left and right width, it is also possible to support the left and right midway part of the top board with intermediate legs.

  As for the back member, the strength of the back member can be increased by fitting the side frame and the panel body together. However, in this case, it is also possible to fit the ridge formed on the side frame and the vertical groove of the panel body. As a means for retaining the rigidity of the panel body, it is also possible to fix a reinforcing material such as a groove shape or a hollow square around the periphery by welding or the like.

1 is a perspective view of a desk system (desk group) according to an embodiment of the present invention. It is a rear view of a back member. It is a separation perspective view of a back member. (A) is a cross-sectional view taken along the line IVA-IVA in FIG. 2, and (B) and (C) are cross-sectional views of other forms of the same part as (A). It is a figure which shows the structure of a back member. (A) is a separated rear view of the rear member, and (B) is a rear view of the rear member. It is a front view of the back member for single-sided use. It is a side view of a desk. It is a figure which shows the relationship between a back member, a leg, and a sleeve cabinet. (A) The partial front view of a back member, (B) is BB sectional drawing of (A). It is an isolation | separation perspective view which shows the connection structure of the front part of a top plate, and a leg. It is a separate perspective view which shows the connection structure of the rear part of a top plate and a leg. It is a separate perspective view which shows the vertical deviation prevention means of a back member and a leg. It is a partial top view of a desk. FIG. 15 is a sectional view taken along line XV-XV in FIG. 14. It is a top view which shows the connection relation of a top plate and a sleeve cabinet. It is the elements on larger scale of FIG. (A) is the sectional view on the AA line of FIG. 17, (B) is the sectional view on the BB line of FIG. (A) is a partial plan view of the desk, and (B) is a sectional view taken along the line BB of (A). It is a figure which shows other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Unit desk 2 Top plate 3 Back member 4 Leg as an example of support 5 Sleeve cabinet as an example of support 13 Side frame 14 Upper frame 15 Outer frame 16 Panel body 20, 21 Folding part 39 Back member and support Engagement hole of the Dharma strip constituting the connecting means with the head 41 Pin with heads constituting the connecting means between the back member and the support 43 Front fitting 69 Rear fitting

Claims (3)

A top plate, a support member that supports the top plate on both the left and right sides, and a back member having a rigid body structure that overlaps a rear portion of the left and right support members. It is a desk that maintains the overall rigidity by connecting the back members,
The back member includes an outer frame body having a vertically long left and right side frame connected to the support and a horizontally long horizontal frame connected to an upper end or a lower end of the left and right side frames or both upper and lower ends, and the left and right side frames. It consists of a fixed panel body,
desk. The outer frame of the back member is formed in a front portal shape with left and right side frames and an upper horizontal frame connected to the upper end thereof, while the panel member of the back member is a metal plate having a substantially rectangular shape in front view. The rigidity is enhanced by forming a folded portion around the four circumferences, and the panel body is fixed to the left and right side frames in a state in which the height can be changed.
The desk according to claim 1. The side frame of the back member is overlapped with the back surface of the support body, and rear connection means to which one side frame is connected to the back surface of each support body is juxtaposed side by side. It is allowed to connect two back members to one support body, and upper connection means to which the end of one top plate is connected to the upper surface of the support body in parallel on the left and right, It is allowed to connect top plates arranged side by side to one support body,
The desk according to claim 1 or 2.

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