JP5983057B2 - Desk leg equipment - Google Patents

Description

  The present invention relates to a desk leg device, and more particularly to a desk leg device capable of changing a ground contact form with respect to a floor surface of a leg that supports both side portions of a top plate.

  Conventionally, there is a requirement for a tabletop with a wide depth, or conversely a requirement for a tabletop with a narrow depth, depending on the purpose of use and preference. In order to provide a learning desk suitable for many users, a learning desk capable of adjusting the depth of the top board according to the situation is desired.

  Therefore, the present applicant has proposed a desk leg device in Patent Document 1. In other words, the desk leg device described in Patent Document 1 supports both sides of the top plate with legs, and the extended top plate is directly or indirectly provided on the top plate or the leg body via another member. The extended top plate can take a horizontal posture in which the top plate and the top plate are flush with the rear end of the top plate, and a retracted posture that does not protrude rearward from the rear end of the top plate. In this desk, the front grounding member is attached to the front part at the lower end of the leg body, and the rear grounding member is detachably attached to the rear part so that the front and rear attachment positions can be changed.

  Specifically, the legs supporting both sides of the top plate are configured to form a frame having a substantially rectangular shape in side view by connecting lateral members between upper and lower ends of the supporting legs arranged in the front and rear. The front and rear support legs and the lower lateral member form a flat surface, and the front grounding member is fixed to the lower end surface of the front portion of the leg body, and the lower end surface of the rear portion is fixed at a constant interval in the front and rear direction. A plurality of screw holes are formed in the rear grounding member, and mounting holes are formed vertically through the rear grounding member at the same interval as the screw holes, and a plurality of bolts are screwed into the screw holes from the mounting holes. The rear grounding member is attached to the leg.

  Accordingly, since the learning desk has a rigid structure in which both sides of the top board are supported by legs, the balance of the center of gravity is always stable, and an extension top board is provided continuously at the rear end of the top board. Even when the plate protrudes rearward from the rear support leg, it can be stably supported by shifting the rear grounding member backward relative to the leg, and the desired purpose is Has been achieved. However, the desk leg device of Patent Document 1 tends to increase in cost because the number of parts increases and the number of processing steps of members also increases.

JP 2008-301974 A

  Accordingly, in view of the above-described situation, the present invention intends to solve a desk leg device that can change the ground contact form with respect to the floor surface of the leg that supports both sides of the top plate. Despite the fact that the top plate is fixed and the balance of the center of gravity is stable, even if an extended top plate is provided behind the top plate to extend the effective depth of the top plate, no additional members are added. The object of the present invention is to provide a leg device for a desk that can easily stabilize a leg body and suppresses an increase in cost to a minimum.

In order to solve the above-mentioned problem, the present invention is a desk leg device capable of changing a grounding form with respect to a floor surface of a leg that supports both sides of the top plate , and the lower end of the leg is a fixed grounding part. A front support leg and a rear support leg shorter than the front support leg, a step is provided behind the fixed grounding part to provide a grounding member attaching part, and a grounding member extending in the front-rear direction is provided on the grounding member attaching part. The mounting position of the desk can be changed, and the fixed grounding portion and the grounding member are supported in contact with the floor surface to constitute a desk leg device (claim 1).

Specifically, the leg is connected to the lower lateral member between the lower end of the front support legs and the rear support leg, with the lower surface of the lower transverse member is set to the lower end surface flush with the rear support legs, wherein Set to a position higher than the lower end of the front support leg to be the grounding member mounting part, and the front and rear mounting positions of the grounding member extending in the front-rear direction can be changed on the lower surface side of the lower horizontal member located at the grounding member mounting part the mounting preferably comprises supporting the fixed ground portion and the ground member of the lower end of the front support legs in contact with the floor surface (claim 2).

Alternatively, the leg, the front connecting the lower lateral member and a lower end rear surface and the rear support leg lower end surface of the support leg, the lower surface of the lower transverse member and the ground is set to a position higher than the lower end of the front support legs A grounding member extending in the front-rear direction is attached to the lower surface side of the lower horizontal member located at the grounding member mounting part so that the front and rear mounting positions can be changed, and a fixed grounding part at the lower end of the front support leg the grounding member is preferably formed by support in contact with the floor surface (claim 3).

A plurality of mounting holes are formed vertically through the rear portion of the lower horizontal member so as to be spaced in the front-rear direction, and at least two sets of screw holes opened upward corresponding to the mounting holes are formed in the grounding member. defined across, fastening screws inserted from above into the mounting hole of the lower horizontal member, in a state of being screwed into the threaded hole of the grounding member to adjust the mounting position of the front and rear, the ground member to the lower lateral member More preferably, it is attached (Claim 4).

Here, a plurality of dowels projecting downward from the lower surface of the lower horizontal member at intervals in the front-rear direction, and an engaging groove extending in the front-rear direction for receiving the dowels is formed on the upper surface of the grounding member. and, in a state or in which one abuts locks to the end of the engaging groove of the dowel, and more preferably formed by setting as the upper and lower positions of the mounting hole and screw hole are matched (claim 5).

Also, the rear portion of the lower surface of the ground member and the ground portion, it is also preferably made the front of the ground portion as a non-grounded portion were Chi paragraph (claim 6).

The desk leg device of the invention according to claim 1 as described above is a desk leg device capable of changing a grounding form with respect to the floor surface of the leg body supporting both side portions of the top plate, and the leg body includes: It has a front support leg whose lower end is a fixed ground part and a rear support leg that is shorter than the front support leg. A step is provided behind the fixed ground part to provide a ground member attachment part, and extends to the ground member attachment part in the front-rear direction. Since the fixed grounding part and the grounding member are brought into contact with the floor surface and supported so that the mounting position of the grounding member can be changed, only the grounding member and its mounting means are added to a normal leg. With this simple structure, the grounding member protrudes rearward and is attached to the leg, so that the grounding area can be increased and the top plate can be supported more stably, and the cost increase can be minimized. . In addition, since the fixed grounding portion is the lower end of the front support leg, the load on the top plate can be reliably supported by the front support leg, and the structure can be simplified.

According to claim 2, wherein the leg, the front connecting the lower lateral member between the lower end of the rear support leg and support leg, with the lower surface of the lower transverse member is set to the lower end surface flush with the rear support legs The grounding member mounting portion is set to a position higher than the lower end of the front support leg, and the grounding member extending in the front-rear direction is provided on the lower surface side of the lower horizontal member positioned at the grounding member mounting portion. Since the fixed grounding portion at the lower end of the front support leg and the grounding member are supported by being in contact with the floor surface, it is close to the structure of a normal leg body, and the leg body can be changed by a slight design change. A grounding member attaching portion can be provided at the lower end portion.

According to claim 3, wherein the leg, the front connecting the lower lateral member and a lower end rear surface and the rear support leg lower end surface of the support leg, the lower surface of the lower horizontal member to a position higher than the lower end of the front support legs The grounding member mounting portion is set, and a grounding member extending in the front-rear direction is mounted on the lower surface side of the lower horizontal member located at the grounding member mounting portion so that the mounting position of the front and rear can be changed, and the lower end of the front support leg Since the fixed grounding part and the grounding member are in contact with and supported by the floor surface, it is close to the structure of a normal leg, and a grounding member mounting part is provided at the lower end of the leg by a slight design change. Can do.

According to a fourth aspect of the present invention, the rear portion of the lower horizontal member is formed with a plurality of mounting holes penetrating up and down in the front-rear direction, and the grounding member opens upward corresponding to the mounting hole. defined across at least two pairs of screw holes, said lower horizontal fastening screws inserted from above into the mounting hole of the member is in a state of being screwed into the threaded hole of the grounding member to adjust the mounting position of the front and rear, the Since the grounding member is attached to the lower horizontal member, the rearward projecting length of the grounding member can be adjusted in one step or multiple steps, and the fastening screw can be loosened or tightened by work from above, The mounting position can be easily changed.

According to a fifth aspect of the present invention, the plurality of dowels project downward from the lower surface of the lower horizontal member at intervals in the front-rear direction, and the engagement extends in the front-rear direction to receive the dowels on the upper surface of the grounding member. Since the mating groove is formed, when the ground screw is moved back and forth with respect to the lower horizontal member by removing the fastening screw, the dowel slides and guides in the engagement groove. The grounding member is not shifted left and right, and the mounting hole and the screw hole are set to coincide with each other in a state where any one of the dowels is stopped at the end of the engaging groove. Without having to visually check the screw holes, just by inserting the fastening screws into the mounting holes from above, the fastening screws can be screwed into the corresponding screw holes, and the mounting position of the grounding member can be changed very easily. can do.

According to the sixth aspect , since the rear portion of the lower surface of the grounding member is a grounding portion and the front side of the grounding portion is a non-grounding portion stepped down, the rear portion of the grounding member can be provided even if there is some unevenness on the floor surface. Can reliably support the grounding portion in contact with the floor surface.

The learning desk to which this invention is applied is shown, (a) is a perspective view of the state in which the extended top plate is retracted and the grounding member is attached to the front position, and (b) is the rear side of the grounding member with the extended top plate in the horizontal posture. It is a perspective view of the state attached to the position. Similarly, the learning desk to which the present invention is applied is shown. (A) is a side view of the state in which the extended top plate is retracted and the grounding member is attached to the front position, and (b) is the rear side of the grounding member in the horizontal posture. It is a side view of the state attached to the side position. It is an expanded longitudinal cross-sectional view of the principal part of this invention. It is a principal part longitudinal cross-sectional view of a state in which the extended top plate is in the retracted posture. It is a principal part longitudinal cross-sectional view of a state with an extended top plate in a horizontal posture. It is a perspective view for explanation at the time of connecting the rear end of another grounding member inside the rear end part of one of the right and left grounding members in the shape of a L in plan view.

  Next, the present invention will be described in more detail based on the embodiments shown in the accompanying drawings. 1 to 5 show a learning desk according to an embodiment to which the desk leg device of the present invention is applied, in which A is a learning desk, 1 is a top board, 2 is a leg, 3 is a front support leg, and 4 is a rear. The support legs 5 are lower horizontal members, and 6 is a grounding member.

The desk leg device according to the present invention is a desk leg device capable of changing the ground contact form with respect to the floor surface of the legs 2 and 2 that support both sides of the top board 1. And a rear support leg 4 shorter than the front support leg 3, and a lower horizontal member 5 is connected between the lower ends of the front support leg 3 and the rear support leg 4, and the lower surface of the lower horizontal member 5 is below the rear support leg 4. It is set to be flush with the end face, and is set to a position higher than the lower end of the front support leg 3, and a grounding member 6 extending in the front-rear direction is provided on the lower surface side of the lower horizontal member 5 and the rear support leg 4. The front support leg 3 and the grounding member 6 are supported by being brought into contact with the floor surface. Here, the lower end of the front support leg 3 is a fixed grounding portion 2A, and the lower lateral member 5 and the lower surface side of the rear support leg 4 are grounding member attaching portions 2B.

  Although not shown, the leg 2 has a front support leg 3 and a rear support leg 4 shorter than the front support leg 3. 5, and the lower surface of the lower horizontal member 5 may be set to a position higher than the lower end of the front support leg 3 to serve as the grounding member mounting portion 2B. Furthermore, the fixed grounding portion 2A may be provided at the lower end of the front end of the single plate-like leg 2 and the grounding member attaching portion 2B may be provided by providing a step behind the fixed grounding portion 2A.

  In the learning desk A to which the desk leg device of the present invention is applied, both sides of the top board 1 are supported by the legs 2 and 2, and the rear end of the top board 1 protrudes slightly rearward from the rear ends of both legs 2. And an extended top plate 7 is provided directly on the top plate 1 or the leg 2 or indirectly through another member, and the extended top plate 7 is connected to the rear end of the top plate 1. Thus, a horizontal posture in which the top surface of the top plate 1 is flush with the top plate 1 and a retracted posture that does not protrude rearward from the rear end of the top plate 1 can be taken. And the said grounding member 6 provided in the lower end of the said leg 2 is the top-plate expansion specification which has arrange | positioned the said expansion top plate 7 to the back of the top plate 1 in the horizontal position so that the said grounding member 6 may protrude back. It is possible to support it stably by changing the position.

  That is, when the grounding member 6 is mounted forward with respect to the leg 2, the normal leg form in which the rear end of the grounding member 6 is flush with the rear end of the top plate 1, and the grounding When the member 6 is attached rearward to the leg 2, it is possible to take an extended leg form in which the rear end of the grounding member 6 protrudes rearward from the rear end of the top plate 1. .

  Further, details of each part of the learning desk A will be described. The learning desk A of this embodiment is made of wood, and each member is made of wood. The leg 2 forms a substantially rectangular frame in side view by connecting an upper horizontal member 8 and a lower horizontal member 5 between the upper and lower ends of the front support leg 3 and the rear support leg 4 arranged in the front-rear direction.

More specifically, as shown in FIGS. 1 to 3, the leg body 2 includes a front support leg 3 and a rear support leg 4 shorter than the front support leg 3, and between the front support leg 3 and the lower end of the rear support leg 4. The lower horizontal member 5 is connected to the lower support member 5 so that the lower surface 9 of the lower support member 5 is set to be flush with the lower end surface 10 of the rear support leg 4 and is set to a position higher than the lower end of the front support leg 3. The grounding member 6 extending in the front-rear direction is attached to the lower surface side of the lateral member 5 and the rear support leg 4 so that the front and rear attachment positions can be changed, and the front support leg 3 and the grounding member 6 are supported by contacting the floor surface. It was comprised so that it might become.

  A plurality of mounting holes 11 and 11 are formed in the rear portion of the lower horizontal member 5 with a space in the front-rear direction so as to penetrate vertically, and the grounding member 6 has an upper portion corresponding to the mounting holes 11 and 11. Are formed in the front and rear, and a fastening screw 13 inserted from above into the mounting hole 11 of the lower lateral member 5 is screwed into the grounding member 6 with the front and rear mounting positions adjusted. The holes 12 are screwed together. In the present embodiment, two attachment holes 11 and 11 are formed in the front and rear in the rear portion of the lower horizontal member 5, and three screws are provided in the front and rear to match the distance between the attachment holes 11 and 11 in the grounding member 6. Holes 12 are formed. That is, the front screw hole 12 and the central screw hole 12 constitute one set, and the central screw hole 12 and the rear screw hole 12 constitute one set. That is, two sets of screw holes 12,... Are formed in the ground member 6 corresponding to the mounting holes 11, 11.

  Further, a plurality of dowels 14, 14 project downward from the lower surface 9 of the lower lateral member 5 at intervals in the front-rear direction, and before and after receiving the dowels 14, 14 on the upper surface 15 of the grounding member 6. In the state where the engaging groove 16 extending in the direction is formed, and any one of the dowels 14 and 14 is in contact with the terminal end of the engaging groove 16, the vertical positions of the mounting hole 11 and the screw hole 12 are matched. Set to. In the present embodiment, two dowels 14, 14 are juxtaposed on the lower surface 9 of the lower lateral member 5 between the mounting holes 11, 11, and both dowels 14, 14 are on the upper surface 15 of the grounding member 6. The formed engagement grooves 16 are simultaneously engaged with each other. The mounting holes 11 and 11 are connected to the rear dowels 14 with the rear end of the engagement groove 16 abutting or the front end of the grounding member 6 abutting against the rear surface of the front support leg 3. In the state where the vertical position coincides with the pair of screw holes 12 and 12 on the side (normal leg form) and the front end of the engagement groove 16 stops against the front dowel 14, The vertical positions coincide with the set of screw holes 12 and 12 (expansion leg mode).

  When the two dowels 14, 14 are engaged with the engagement grooves 16, when the grounding member 6 is slid in the front-rear direction with respect to the lower lateral member 5, the grounding member 6 is shifted left and right. The upper surface 15 of the grounding member 6 always slides along the lower surface 9 of the lower horizontal member 5 without rotating. This forward / backward slide movement operation of the grounding member 6 can be performed with the learning desk A in a normal posture. Then, after the grounding member 6 is set to the position of the normal leg form or the extended leg form, the positions of the mounting hole 11 and the screw hole 12 are accurately determined even if the screw hole 12 is not visible. The fastening screw 13 can be inserted into the mounting hole 11 and can be screwed into the screw hole 12.

  Further, the rear part of the lower surface of the grounding member 6 is a grounding part 17, and the front side of the grounding part 17 is a non-grounding part 18 that is stepped down. 17 can be brought into contact with the floor surface.

  Next, each part of the learning desk A will be described in more detail. On the lower surface of the top plate 1, a support frame 20 that holds the drawers 19 so as to be able to be pulled out is fixed, leaving both sides, and the upper end of the leg 2 is connected to the side surface of the support frame, The upper end of the leg 2 is firmly fixed to the lower surface of the top plate 1 with a pin dowel or the like. Furthermore, the connecting member 21 is connected between the lower rear ends of the rear support legs 4 and 4 of both legs 2 and 2 to increase the rigidity.

  As shown in FIGS. 4 and 5, the learning desk A can turn the extended top plate 7 up and down on the rear support legs 4, 4 via the support arms 22, 22. Provided. Further, elongated holes 24 parallel to the upper surface of the extended top plate 7 are formed in the base end side protruding portions 23 and 23 of the support arms 22 and 22 fixed to both sides of the lower surface of the extended top plate 7 in parallel with the depth direction. At the same time, a support hole 25 penetrating vertically from the long hole 24 to the side of the extended top plate 7 is formed, and the support shaft 26 passed through the long hole 24 is fixed to the inner surface side of the leg body 2 to rotate up and down. It is possible. Further, a fixing screw 27 passed through the support hole 25 in a state where the extended top plate 7 is in a horizontal posture is screwed into a screw hole 28 on the lower surface of the top plate 1, and the extended top plate 7 is in a retracted posture. A fixing screw 27 passed through the support hole 25 from behind is screwed into a screw hole 28 formed in the back surface of the support frame 20 to maintain the posture.

  Further, a projecting piece 29 is projected forward from the lower surface at the left and right intermediate portions of the extended top plate 7, and a receiving metal fitting 30 for fitting the projecting piece 29 is attached to the rear end edge of the lower surface of the top plate 1. When the top plate 7 is set in a horizontal posture, the projecting piece 29 is fitted into the metal fitting 30 to prevent the expansion top plate 7 from being bent in the vertical direction.

  Since the learning desk A of the present embodiment has a rigid structure in which both sides of the top board 1 are supported by the legs 2 and 2, the balance of the center of gravity is always stable, and the top board 1 or the leg body directly or other An extended top plate 7 is provided indirectly through a member, and the extended top plate 7 is connected to the rear end of the top plate 1 so that the top plate 1 and the top surface are flush with each other, and the top plate 1 in a retracted position that does not protrude rearward from the rear end of the head 1, and in a state where the extended top 7 is in a horizontal position, the top 1 and the extended top 7 are united to form a desk having a wide depth. Even when the depth width is expanded rearward by the extended top plate 7, the grounding member 6 can be stably supported by being shifted rearward with respect to the leg body 2. That is, even if a large load that cannot be assumed in normal use is applied to the extended top plate 7, the lower portion is supported by the grounding member 6, so that the front portion of the desk does not rise and fall down. On the other hand, when the extended top plate 7 is in the retracted position, the extended top plate 7 does not protrude rearward from the rear end of the top plate 1, and if the grounding member 6 is attached to the front side with respect to the leg body 2, Since it does not get in the way behind the body 2, the rear end of the desk can be arranged along the wall surface or the front of the bookcase.

  Further, when the learning desk A according to the present embodiment is reconfigured to unit specifications, for example, when connecting a bookcase or the like to one side of the top plate 1, the grounding member 6 on the connection side is unnecessary or becomes an obstacle. The grounding member 6 is removed and connected to the inner surface of the rear end of the grounding member 6 on the other side in a substantially L shape in plan view. As shown in FIG. 6, a widened portion 31 that is wider in plan view is formed inside the rear end of the grounding member 6, and the rear end of the other grounding member 6 is attached to and detached from the side surface of the widened portion 31. It can be connected as possible. For this purpose, a rotary fastener 32 and a locking pin 33 are used. Specifically, a circular hole 34 opened upward to accommodate the rotary fastener 32 is provided at the rear part of the widened part 31 of the grounding member 6, and a through hole 35 penetrating from the circular hole 34 to the rear end is provided. The screw hole 36 is formed by embedding a nut or the like on the inner surface of the front portion of the widened portion 31. Then, the base of the locking pin 33 is screwed into the screw hole 36 of one grounding member 6, the locking pin 33 is inserted into the through hole 35 of the other grounding member 6, and then the circular hole 34 is The rotary fastening tool 32 is inserted, the head of the locking pin 33 is engaged, the rotary fastening tool 32 is rotated, and the locking pin 33 is attracted and connected.

  It is also possible to provide height-adjustable adjusters at the lower end of the front support leg and the grounding portion 17 of the grounding member 6.

A study desk,
2A fixed grounding part, 2B grounding member mounting part,
1 top plate, 2 legs,
3 front support legs, 4 rear support legs,
5 Lower horizontal member, 6 Grounding member,
7 Extended top plate, 8 Upper horizontal member,
9 bottom surface, 10 bottom surface,
11 mounting holes, 12 screw holes,
13 fastening screws, 14 dowels,
15 upper surface, 16 engagement groove,
17 Grounding part, 18 Non-grounding part,
20 support frame, 21 connecting member,
22 support arms, 23 proximal-side protrusions,
24 long holes, 25 support holes,
26 spindles, 27 fixing screws,
28 screw holes, 29 protrusions,
30 bracket, 31 widened part,
32 rotary fasteners, 33 locking pins,
34 circular holes, 35 through holes,
36 Screw holes.

Claims (6)

A leg device for a desk capable of changing a grounding form with respect to a floor surface of a leg supporting both sides of the top board, the leg having a front support leg whose lower end is a fixed grounding part and a rear part shorter than the front support leg. A supporting leg is provided, a step is provided behind the fixed grounding portion to provide a grounding member mounting portion, and a grounding member extending in the front-rear direction is mounted on the grounding member mounting portion so that the mounting position of the front and rear can be changed, and the fixed grounding A desk leg device, characterized in that the table and the grounding member are supported in contact with the floor surface. The leg is, the front connecting the lower lateral member between the lower end of the rear support leg and support leg, with the lower surface of the lower transverse member is set to the lower end surface flush with the rear support legs, the lower end of the front support legs and the grounding member mounting portion is set to a high position, the lower surface of the lower horizontal member positioned grounding member mounting portion, mounted for changing the mounting position of the front and rear ground member extending in the longitudinal direction, the front The desk leg device according to claim 1, wherein the fixed grounding portion at the lower end of the support leg and the grounding member are supported in contact with the floor surface. The leg is, the front connecting the lower lateral member and a lower end rear surface and the rear support leg lower end surface of the support leg, the lower surface of the lower transverse member and the grounding member mounting set to a position higher than the lower end of the front support legs A grounding member extending in the front-rear direction is attached to the lower surface side of the lower horizontal member located at the grounding member mounting portion so that the mounting position of the front and rear can be changed, and the fixed grounding portion at the lower end of the front support leg and the grounding The desk leg device according to claim 1, wherein the member is supported by contacting the floor surface. A plurality of mounting holes are formed vertically through the rear portion of the lower horizontal member so as to be spaced in the front-rear direction, and at least two sets of screw holes opened upward corresponding to the mounting holes are formed in the grounding member. defined across, fastening screws inserted from above into the mounting hole of the lower horizontal member, in a state of being screwed into the threaded hole of the grounding member to adjust the mounting position of the front and rear, the ground member to the lower lateral member The desk leg apparatus of Claim 2 or 3 attached . A plurality of dowels projecting downward from the lower surface of the lower horizontal member at intervals in the front-rear direction, and an engagement groove extending in the front-rear direction for receiving the dowels is formed on the upper surface of the ground member, The desk leg device according to claim 4 , wherein the mounting hole and the screw hole are set so that the vertical positions thereof coincide with each other when one of the dowels is in contact with the end of the engaging groove. The desk leg device according to any one of claims 1 to 5, wherein a rear portion of the lower surface of the ground member is a ground portion, and a front side of the ground portion is a non-ground portion.

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