Furniture with top plate

Abstract

To provide furniture with a top board capable of easily adjusting the height of the top board.SOLUTION: The furniture with a top plate includes a support structure that supports the top plate from below, the support structure includes a leg member including a tubular outer member and an inner member inserted inside the outer member and provided so as to be relatively displaceable in an up-down direction with respect to the outer member, and a lock portion capable of restraining relative displacement in the up-down direction between the outer member and the inner member. The lock part maintains the restrained state with respect to the relative displacement in the direction in which the leg member contracts in the vertical direction, and shifts from the restrained state to the restraint released state with the relative displacement in the direction in which the leg member extends in the vertical direction.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a fixture with a top. [Background technology]

[0002] Some furniture with a tabletop, such as a desk, has an adjustable tabletop height. For example, Patent Document 1 discloses a configuration in which leg members supporting the tabletop are extendable in the vertical direction. In this configuration, the leg members include a cylindrical outer member, an inner member inserted inside the outer member and movable in the vertical direction relative to the outer member, a locking claw provided on the outer member that can restrict relative movement between the outer member and the inner member in the vertical direction, and a lever that moves the inner member in the vertical direction relative to the outer member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Jikko No. 58-6352 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the configuration disclosed in Patent Document 1, adjusting the height of the tabletop by extending and retracting the leg members in the vertical direction requires operating a lever for both the extension and contraction operations, which is time-consuming. The present invention aims to provide a fixture with a tabletop whose height can be easily adjusted. [Means for solving the problem]

[0005] In order to solve the above problems, the present invention employs the following aspects. (1) A fixture with a tabletop according to one aspect of the present invention comprises a tabletop having a work surface facing upward, and a support structure supporting the tabletop from below, the support structure having a cylindrical outer member extending in the vertical direction, and an inner member extending in the vertical direction and inserted inside the outer member, and arranged so as to be displaceable in the vertical direction relative to the outer member, the fixture comprising: leg members that are expandable and contractible in the vertical direction; and a locking unit that can restrict the relative displacement of the outer member and the inner member in the vertical direction, the locking unit being switchable between a restricted state that restricts the relative displacement of the outer member and the inner member in the vertical direction, and an unrestricted state that allows the relative displacement of the outer member and the inner member in the vertical direction, the locking unit maintaining the restricted state against relative displacement of the leg member in the vertical direction contracting, while being transitioned from the restricted state to the unrestricted state by the leg member in accordance with relative displacement of the leg member in the vertical direction extending. According to this aspect, the locking portion maintains a restrained state against relative displacement of the leg member in the direction of vertical contraction, and transitions from the restrained state to a released state in response to relative displacement of the leg member in the direction of vertical extension. As a result, under normal circumstances, when the load of the tabletop is acting on the leg member, the locking portion in the restrained state maintains the restrained state against relative displacement of the leg member in the direction of vertical contraction, thereby fixing the vertical length of the leg member and maintaining the tabletop at a constant height. When the tabletop is lifted and the outer and inner members are displaced relative to each other in the direction in which the leg members extend vertically, the locking portion transitions from a locked state to a unlocked state. This allows the leg members to be extended vertically and the tabletop to be raised. Therefore, when raising the tabletop, it is only necessary to lift the tabletop, and no other operation is required to transition the locking portion from a locked state to a unlocked state. As a result, the height of the tabletop can be easily adjusted.

[0006] (2) In the fixture with a top according to the aspect (1) above, it is preferable that the locking portion has an operating member provided on the outer peripheral surface of the outer member, and the operating member is movable in a first direction intersecting the vertical direction, moving toward or away from the outer peripheral surface of the outer member, and has an engaging portion that engages with both the outer member and the inner member in the restrained state and disengages from at least the inner member of the outer member and the inner member in the released state, and an operating portion that moves the engaging portion from the restrained state to the released state. According to this aspect, in the restrained state, the engagement portion engages with both the outer member and the inner member, thereby restraining the relative vertical displacement between the outer member and the inner member. This fixes the vertical length of the leg member. When the operating portion of the actuation member is operated to move the engagement portion from the restrained state to the released state, the engagement portion disengages from at least the inner member of the outer member and the inner member. This allows the outer member and the inner member to move relative to each other in the vertical direction, making it possible to adjust the vertical length of the leg member.

[0007] (3) In the fixture with a top plate according to the aspect (2) above, it is preferable that the operating unit be capable of being pushed in the first direction to approach the outer surface of the outer member while gripping the outer member, and that the locking unit transitions from the restrained state to the released state when the operating unit is pushed in. According to this aspect, by pressing the operating portion, the locking portion can be easily transitioned from the restrained state to the released state.

[0008] (4) In the fixture with a top according to the aspect (3) above, the actuating member has a base that extends in the vertical direction along the outer peripheral surface of the outer member and whose vertical middle portion is rotatable around an axis along a second direction that intersects the first direction when viewed from the vertical direction, and the engaging portion that extends from the other vertical end of the base toward the inside of the outer member, and when the operating portion, which is located at a position away from the axis in the vertical direction, is pressed in, it is preferable that the actuating member rotates around the axis, causing the engaging portion to disengage from at least the inner member of the outer member and the inner member, thereby transitioning from the restrained state to the released state. According to this aspect, the actuating member has an integral operating portion and an engaging portion, which reduces the number of parts required. Furthermore, when the operating portion is pressed, the engaging portion disengages from at least the inner member of the outer and inner members, transitioning from the constrained state to the released state. This allows the locking portion to transition from the constrained state to the released state and the leg members to be extended or retracted with a simple operation.

[0009] (5) In the fixture with a tabletop according to the above aspect (4), it is preferable that the inner member has an engaged portion with which the engaging portion can engage, and that the outer member and the inner member are displaced relative to each other in the direction in which the leg member extends in the vertical direction, and the engaged portion presses the engaging portion in the vertical direction, causing the operating member to rotate around the axis and transition from the restrained state to the released state. According to this aspect, in the restrained state, the engaging portion engages with the engaged portion of the inner member, thereby restraining relative displacement between the outer member and the inner member and fixing the length of the leg member. When the outer member and the inner member are displaced relative to each other in the direction in which the leg member extends vertically, the engaged portion presses the engaging portion, causing the actuating member to rotate about its axis. As a result, by lifting the tabletop and extending the leg member vertically, the locking portion can be transitioned from the restrained state to the released state, eliminating the need to operate the locking portion specifically. Therefore, the height of the tabletop can be easily adjusted.

[0010] (6) In a fixture with a tabletop according to any one of the above aspects (3) to (5), it is preferable that the support structure has a plurality of the leg members, and that the locking portion is provided on each of the adjacent leg members. According to this aspect, the user can press in the operating parts of the locking parts of the adjacent leg members with both hands, which makes it easy to adjust the height of the tabletop.

[0011] (7) In the fixture with a tabletop according to the above aspect (6), it is preferable that the locking portions provided on each of the leg members are provided on the portions of adjacent leg members that face each other. According to this aspect, since the locking portions are provided on the opposing portions of the adjacent leg members, the user can easily press the operating portion with the thumbs of both hands. Also, the locking portions are prevented from protruding in a direction different from the opposing portions of the adjacent leg members, thereby preventing the user's lower limbs from interfering with the locking portions.

[0012] (8) In the fixture with a top according to any one of the above aspects (2) to (7), it is preferable that the locking portion further comprises a housing provided on the outer peripheral surface of the outer member and having an opening that opens toward the outside of the outer member, and that the operating member is housed inside the opening. According to this aspect, the operating member is housed inside the opening of the housing, which not only improves the appearance but also prevents the operating member from interfering with the user's lower limbs, etc., and being operated inadvertently. [Effects of the Invention]

[0013] According to one aspect of the present invention, the height of the tabletop can be easily adjusted. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view showing a fixture with a top plate according to this embodiment. [Figure 2]FIG. 2 is a perspective view showing a support structure for a fixture with a top plate according to this embodiment. [Figure 3] FIG. 2 is a view of the display unit with a tabletop according to this embodiment as seen from the width direction. [Figure 4] FIG. 2 is a perspective view showing a leg member of a fixture with a top plate according to this embodiment. [Figure 5] FIG. 4 is a cross-sectional view of the leg member as viewed from the width direction. [Figure 6] FIG. 6 is an enlarged cross-sectional view of a main part of FIG. 5. [Figure 7] FIG. 10 is a cross-sectional view showing the locking portion in a released state. [Figure 8] FIG. 10 is a perspective view showing a state in which the housing is removed from the locking portion provided on the leg member. [Figure 9] 10 is a cross-sectional view showing the locking portion in a state in which the top plate is lifted to extend the leg members in the vertical direction, and the inner member is displaced downward relative to the outer member. FIG. [Figure 10] 10 is a cross-sectional view showing the locking portion in a state where the leg member is extended in the vertical direction and the engaging portion is engaged with another engaged portion above it. FIG. [Figure 11] FIG. 10 is a perspective view showing a leg member of a fixture with a top panel according to a modified example of this embodiment. [Figure 12] FIG. 4 is a cross-sectional view of the leg member as viewed from the width direction. [Figure 13] 10 is a cross-sectional view showing the locking portion in a state in which the top plate is lifted to extend the leg members in the vertical direction, and the inner member is displaced downward relative to the outer member. FIG. [Figure 14] FIG. 10 is a cross-sectional view showing the locking portion in a released state. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, an embodiment of the furniture with a tabletop according to the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to this embodiment.

[0016] <Fixture with tabletop 1> Fig. 1 is a perspective view showing a tabletop-equipped fixture 1 according to this embodiment. Fig. 2 is a perspective view showing a support structure for the tabletop-equipped fixture 1 according to this embodiment. Fig. 3 is a view of the tabletop-equipped fixture 1 according to this embodiment as seen from the width direction Dw. As shown in FIGS. 1 to 3, the tabletop-equipped furniture 1 is, for example, a desk, and includes a tabletop 10 and a support structure 20 having a pair of support legs 21.

[0017] In the following description, the direction perpendicular to the floor surface F is referred to as the up-down direction Dv, the direction in which a pair of support legs 21 are spaced apart in a plane perpendicular to the up-down direction Dv is referred to as the width direction Dw, and the direction intersecting the up-down direction Dv and the width direction Dw is referred to as the front-to-back direction Da.

[0018] 1 and 3, the tabletop 10 is a plate-like structure extending along a plane intersecting the vertical direction Dv. The tabletop 10 has an upward-facing work surface 10f on its upper surface. When viewed from above, the tabletop 10 has, for example, a rectangular shape with the longer side extending in the width direction Dw and the shorter side extending in the front-to-rear direction Da.

[0019] The support structure 20 supports the tabletop 10 from below. As shown in FIGS. 1 to 3, the support structure 20 is placed on the floor surface F where the tabletop-equipped furniture unit 1 is to be installed. As shown in FIG. 2, the support structure 20 of this embodiment has a pair of support legs 21, an upper connecting rod 22, and a rear connecting rod 23.

[0020] The pair of support legs 21 are arranged apart in the width direction Dw. The pair of support legs 21 face each other in the width direction Dw of the tabletop 10. Each support leg 21 is formed in a rectangular frame shape when viewed from the width direction Dw, and includes a pair of leg modules 24, a lower connecting member 26, and an upper connecting member 27.

[0021] The pair of leg modules 24 are spaced apart in the front-to-rear direction Da. Each of the pair of leg modules 24 includes a leg member 25 and a locking portion 40. The leg member 25 extends in the up-down direction Dv. In this embodiment, of the pair of leg modules 24, the leg member 25 of the leg module 24F that is provided at the front in the front-to-rear direction Da is disposed below the tabletop 10. Of the pair of leg modules 24, the leg member 25 of the leg module 24R that is provided at the rear is disposed behind the tabletop 10 and is longer in the up-down direction Dv than the leg member 25 of the leg module 24F that is provided at the front.

[0022] The lower connecting member 26 extends in the front-rear direction Da and connects the lower ends of the pair of leg members 25. Both ends of the lower connecting member 26 in the front-rear direction Da are fixed to each of the pair of leg members 25 by means of welding, screwing, etc. The upper connecting member 27 extends in the front-rear direction Da and connects the upper ends of the pair of leg members 25. Both ends of the upper connecting member 27 in the front-rear direction Da are fixed to each of the pair of leg members 25 by means of welding, screwing, etc.

[0023] The upper connecting rod 22 and the rear connecting rod 23 each extend in the width direction Dw. The upper connecting rod 22 connects the middle portions of the upper connecting members 27 in the front-to-rear direction Da. Each of the two end portions of the upper connecting rod 22 in the width direction Dw is fixed to the upper connecting member 27 by means of welding, screwing, etc. The rear connecting rod 23 connects the middle portions of the leg members 25 (outer members 31) of the leg module 24R provided at the rear in the up-down direction Dv. Each of the two end portions of the rear connecting rod 23 in the width direction Dw is fixed to the leg members 25 of the leg module 24R by means of welding, screwing, etc.

[0024] 1 and 3, the top plate 10 is connected to the support structure 20 as described above with bolts (not shown) or the like. In this embodiment, the top plate 10 is connected to the upper connecting member 27 and the upper connecting rod 22 of the support structure 20 with bolts or the like.

[0025] Fig. 4 is a perspective view showing the leg member 25 of the tabletop-equipped furniture 1 according to this embodiment. Fig. 5 is a cross-sectional view of the leg member 25 as seen from the width direction Dw. In the tabletop-equipped furniture 1 of this embodiment, the tabletop 10 is capable of being raised and lowered. Therefore, the leg members 25 of each leg module 24 of this embodiment are configured to be extendable and retractable in the vertical direction Dv. As shown in Figures 4 and 5, each leg member 25 includes an outer member 31, a lower ring member 34, an inner member 32, and an upper ring member 35 (see Figure 5).

[0026] In this embodiment, the outer member 31 and the inner member 32 are each made of, for example, metal and have a cylindrical shape. The outer member 31 and the inner member 32 may also have a rectangular cylindrical shape, such as a square cylindrical shape.

[0027] The outer member 31 extends in the vertical direction Dv. As shown in Fig. 3, the outer member 31 is connected to the tabletop 10 via an upper connecting member 27. The outer member 31 may also be connected directly to the tabletop 10.

[0028] As shown in Figures 4 and 5, the inner member 32 extends in the vertical direction Dv and is inserted inside the outer member 31. A ground contact member 33 that comes into contact with the floor surface F is provided at the lower end of the inner member 32. The ground contact member 33 may be equipped with an adjuster for adjusting the unevenness of the floor surface F, or a caster for rolling on the floor surface F to enable the entire tabletop-equipped furniture unit 1 to move relative to the floor surface F. The inner member 32 comes into contact with the floor surface F via the ground contact member 33. Note that the lower end of the inner member 32 may also come into contact with the floor surface F without the ground contact member 33. The inner member 32 is provided so as to be displaceable relative to the outer member 31 in the vertical direction Dv with a portion thereof inserted into the outer member 31.

[0029] 5, a cylindrical lower ring member 34 is provided at the lower end of the outer member 31. The inner member 32 is inserted radially inside the lower ring member 34. The lower ring member 34 is located at the lower end of the outer member 31, radially inside the inner circumferential surface of the outer member 31. The lower ring member 34 has the function of restricting radial movement of the inner member 32 relative to the outer member 31 beyond a certain limit, and the function of preventing the inner member 32 from slipping out of the outer member 31.

[0030] A disk-shaped upper ring member 35 is provided at the upper end of the inner member 32. The upper ring member 35 is fitted into the upper end opening of the inner member 32 and protrudes radially outward beyond the outer circumferential surface of the inner member 32. The upper ring member 35 restricts the inner member 32 from moving radially beyond a certain amount at its upper end.

[0031] FIG. 6 is an enlarged cross-sectional view of a main part of FIG. 5 and 6, the inner member 32 is provided with a pin-shaped member 39 that penetrates from the radially outer side to the radially inner side of the inner member 32. The pin-shaped member 39 is, for example, a bolt, a rivet, or the like, and has a head 39h that protrudes radially outward from the outer peripheral surface of the inner member 32. As shown in FIG. 5, the head 39h abuts against the lower ring member 34 from above, thereby restricting the amount of downward movement (stroke amount) of the inner member 32 relative to the outer member 31.

[0032] 6, the outer member 31 has a through-hole 31h that passes radially through the outer member 31 in a portion where a locking portion 40 (described later) is provided. When assembling the leg member 25, the pin-shaped member 39 can be easily installed by inserting the inner member 32 into the outer member 31 and then passing the inner member 32 through the through-hole 31h.

[0033] As shown in Figures 1 to 6, the locking portion 40 can restrict relative movement of the outer member 31 and the inner member 32 in the up-down direction Dv. The locking portion 40 is provided on each leg member 25. The locking portion 40 is provided on each of the leg members 25 of the leg modules 24 (leg modules 24F, 24R) adjacent in the front-rear direction Da, at portions of the leg members 25 adjacent in the front-rear direction Da that face each other. The locking portion 40 is provided below the center of the outer member 31 of the leg member 25 in the up-down direction Dv.

[0034] 4 to 6, the locking portion 40 has a lever (operating member) 41 and a housing 49. The locking portion 40 is provided on the outer peripheral surface of the outer member 31.

[0035] FIG. 7 is a cross-sectional view showing the locking portion 40 in the released state P2. The lever 41 enables the state of the locking section 40 to be switched between a restrained state P1 shown in Figure 6, in which the relative displacement of the outer member 31 and the inner member 32 in the vertical direction Dv is restrained, and a released state P2 shown in Figure 7, in which the relative displacement of the outer member 31 and the inner member 32 in the vertical direction Dv is permitted.

[0036] FIG. 8 is a perspective view showing a state in which the housing 49 is removed from the locking portion 40 provided on the leg member 25. As shown in FIG. As shown in FIGS. 6 and 8, the lever 41 is made of, for example, metal, and includes a base portion 43 and an engagement portion 44 integrally therewith.

[0037] The base 43 extends in the up-down direction Dv. When viewed from the front-rear direction Da, the base 43 is formed in a rectangular shape with its long sides extending in the up-down direction Dv and its short sides extending in the width direction Dw. The base 43 has an operating unit 45. The operating unit 45 is a portion that is pressed by the user when moving the engagement portion 44 from the restrained state P1 to the released state P2. Since the lever 41 rotates around a shaft 46 (described later), a portion of the base 43 above the shaft 46 (in the first direction) can function as the operating unit 45. The operating unit 45 that is pressed by the user is preferably located further above the shaft 46, as this allows for a lighter pressing force.

[0038] The engaging portion 44 extends from a lower end portion (the other end portion in the up-down direction Dv) of the base portion 43 radially inward in the front-rear direction Da of the outer member 31. In other words, the lever 41 including the base portion 43 and the engaging portion 44 is formed in an L-shape when viewed from the width direction Dw.

[0039] An engagement portion insertion hole 31k is formed in the outer member 31 at a position overlapping with the engagement portion 44 in the up-down direction Dv. In the restrained state P1, the engagement portion 44 is inserted into the radially inner side of the outer member 31 through the engagement portion insertion hole 31k.

[0040] A bracket 47 is joined to the middle part in the up-down direction Dv of the base 43. The bracket 47 has a pair of support pieces 47s that are spaced apart in the width direction Dw and each extend in a direction approaching the outer peripheral surface 31f of the outer member 31 (radially inward) in the front-rear direction Da.

[0041] The through hole 31h is formed in the outer member 31 at a portion facing the bracket 47 in the front-rear direction Da, penetrating the outer member 31 in the radial direction. A base member 38 is joined to the outer peripheral surface 31f of the outer member 31 by welding, adhesive, or the like. The base member 38 closes the through hole 31h and integrally includes plate portions 38p joined to the outer peripheral surface 31f on both sides of the through hole 31h in the width direction Dw, and protrusions 38s protruding from the plate portions 38p in a direction away from the outer peripheral surface 31f in the front-rear direction Da (radially outward). A shaft 46 extending in the width direction Dw (horizontal direction) is supported by the protrusions 38s. Both ends of the shaft 46 in the width direction Dw are inserted into a pair of support pieces 47s. As a result, the lever 41 is provided such that its intermediate portion in the up-down direction Dv can rotate freely around an axis 46 along a width direction Dw (second direction) that intersects with the front-rear direction Da when viewed from the up-down direction Dv. As the lever 41 rotates around the axis 46, the engaging portion 44 can move in the front-rear direction Da (first direction approaching or moving away from the outer peripheral surface 31f of the outer member 31).

[0042] In addition, a biasing member 48 such as a spring is provided between the bracket 47 and the base member 38 to bias the lever 41 in a direction (radially outward) in which the operating portion 45 moves away from the outer peripheral surface 31f of the outer member 31. The biasing member 48 biases the engaging portion 44 of the lever 41 toward the radially inward direction of the outer member 31 (restrained state P1).

[0043] 6, a plurality of engaged portions 32h are formed on the inner member 32 at intervals in the up-down direction Dv. In this embodiment, the engaged portions 32h are holes that penetrate the cylindrical inner member 32 in the radial direction of the inner member 32. The engaged portions 32h may be recesses that are recessed radially inward from the outer circumferential surface of the inner member 32.

[0044] As shown in FIGS. 4 to 6, the housing 49 is provided on the outer peripheral surface 31f of the outer member 31. The housing 49 integrally includes a wall portion 49w and an inner flange 49f. The wall portion 49w rises from the outer peripheral surface 31f of the outer member 31 in a direction away from the outer peripheral surface 31f in the front-rear direction Da (toward the radial outside of the outer member 31). The wall portion 49w is formed to surround the lever 41 when viewed in the front-rear direction Da. The inner flange 49f extends inward from the tip of the wall portion 49w (toward the lever 41 in a plane intersecting the front-rear direction Da). The housing 49 has an opening 49a formed by the inner edge of the inner flange 49f and opening in a direction away from the outer peripheral surface 31f in the front-rear direction Da (toward the radial outside of the outer member 31). The lever 41 is accommodated inside the opening 49a. When viewed in the front-rear direction Da, the inner edge (opening 49a) of the inner flange 49f is close to the outer edge of the base 43 of the lever 41. When viewed in the width direction Dw, as shown in Fig. 6, the base 43 of the lever 41 is located on approximately the same plane as the inner flange 49f. As a result, the base 43 of the lever 41 is arranged not to protrude in the front-rear direction Da relative to the housing 49 in a direction away from the outer circumferential surface 31f.

[0045] Such locking unit 40 is preferably provided so that a user can operate lever 41 with one hand by gripping a portion of outer member 31 at the same height as locking unit 40 in the up-down direction Dv with the palm of the hand or between the index finger and little finger, and then using the thumb or the like to push operating portion 45 of lever 41 housed in housing 49 in a direction approaching outer peripheral surface 31f of outer member 31. For this reason, as shown in Fig. 6, the sum of the thickness s1 of outer member 31 and the distance s2 of operating portion 45 from outer peripheral surface 31f of outer member 31 to the outside in the radial direction of outer member 31 (s1 + S2) is preferably set to, for example, about 40 mm to 60 mm.

[0046] When the tabletop-equipped furniture 1 is in use, the locking portion 40 is in a restrained state P1, in which the relative displacement of the outer member 31 and the inner member 32 in the up-down direction Dv is restrained, as shown in FIG. 6. In the restrained state P1, when viewed from the width direction Dw, the base 43 of the lever 41 extends parallel to the outer peripheral surface 31f of the outer member 31, and the engaging portion 44 protrudes radially inward of the outer member 31 through the engaging portion insertion hole 31k. In the restrained state P1, the tip of the engaging portion 44 of the lever 41 is inserted into the engaged portion 32h. At this time, the engaging portion 44 abuts against the upper edge 31u of the engaging portion insertion hole 31k from below. Furthermore, the tip of the engaging portion 44 abuts against the lower edge 32d of the engaged portion 32h from above. That is, in the restrained state P1, the engaging portion 44 is sandwiched from above and below by the upper edge 31u of the engaging portion insertion hole 31k and the lower edge 32d of the engaged portion 32h. In the restrained state P1, the locking portion 40 maintains a state in which the relative displacement of the outer member 31 and the inner member 32 in the vertical direction Dv in the direction in which the leg member 25 contracts in the vertical direction Dv is restrained.

[0047] FIG. 9 is a cross-sectional view showing the locking portion 40 in a state where the top plate 10 is lifted to extend the leg members 25 in the vertical direction Dv, and the inner member 32 is displaced downward relative to the outer member 31. To raise the tabletop 10, the user lifts the tabletop 10. Then, as shown in FIG. 9 , the weight of the inner member 32 causes the inner member 32 to displace downward relative to the outer member 31, and the leg member 25 extends in the vertical direction Dv (extension operation of the leg module 24). At this time, the outer member 31 and the inner member 32 are displaced relative to each other in the direction in which the leg member 25 extends in the vertical direction Dv. When the upper edge 32u of the engaged portion 32h abuts against the tip of the engaging portion 44 from above, the engaging portion 44 is pressed downward. Then, the lever 41 rotates around the shaft 46, and the engaging portion 44 disengages from the engaged portion 32h. This releases the constraint on the relative displacement of the outer member 31 and the inner member 32 in the vertical direction Dv, resulting in a transition from the constrained state P1 to the unconstrained state P2. As a result, the leg member 25 extends in the vertical direction Dv. When lifting the tabletop 10 in this manner, it is preferable to synchronously extend and retract the leg members 25 of the leg modules 24 adjacent in the front-to-rear direction Da in each of a pair of support legs 21. It is also preferable to synchronously extend and retract the leg members 25 of the leg modules 24 adjacent in the width direction Dw in the support legs 21 on both sides in the width direction Dw. For this reason, it is preferable to lift the tabletop 10 while maintaining the work surface 10f positioned within a horizontal plane.

[0048] Here, as described above, in order to rotate the lever 41 around the axis 46 and smoothly disengage the engaging portion 44 from the engaged portion 32h by the upper edge 32u of the engaged portion 32h hitting the tip of the engaging portion 44 from above and pressing the engaging portion 44 downward, for example, as shown in Figure 6, it is preferable to set the ratio (A / V) of the length A of the engaging portion 44 in the front-to-rear direction Da to the distance V in the up-down direction Dv between the center of the axis 46 and the engaging portion 44 to, for example, about 0.6 to 0.8.

[0049] The engaging portion 44 of the lever 41 is biased radially inward of the outer member 31 by the biasing member 48. When the outer member 31 and the inner member 32 are displaced relative to each other in the direction in which the leg member 25 extends in the up-down direction Dv, the engaging portion 44, which has disengaged from the engaged portion 32h, moves upward relative to the inner member 32 due to the biasing force of the biasing member 48, with the tip of the engaging portion 44 remaining in sliding contact with the outer peripheral surface of the inner member 32. At this time, the tip of the engaging portion 44 abuts against the outer peripheral surface of the inner member 32, causing the lever 41 to maintain the released state P2 and to be restricted from returning to the constrained state P1.

[0050] FIG. 10 is a cross-sectional view showing the locking portion 40 in a state where the leg member 25 is extended in the vertical direction Dv and the engaging portion 44 is engaged with the upper engaged portion 32h. 10, when the engaging portion 44 reaches a portion facing another engaged portion 32h located above the disengaged engaged portion 32h, the lever 41 is allowed to return to the locked state P1. Because the lever 41 is biased by the biasing member 48, the lever 41 rotates about the shaft 46, and the engaging portion 44 is inserted into the engaged portion 32h. This causes the locking portion 40 to return from the released state P2 to the locked state P1.

[0051] If the user wishes to raise the tabletop 10 even higher, the user further lifts the tabletop 10. Then, in the same manner as described above, the engaging portion 44 disengages from the engaged portion 32h, transitioning from the constrained state P1 to the released state P2, and the leg member 25 can be further extended in the up-down direction Dv. Then, the engaging portion 44 is inserted into another engaged portion 32h located above the disengaged engaged portion 32h, and the tabletop 10 can be fixed at the desired height by returning from the released state P2 to the constrained state P1.

[0052] To lower the tabletop 10, the user presses the operating unit 45 in the front-to-rear direction Da toward the outer peripheral surface 31f of the outer member 31 (inward in the radial direction), as shown in FIG. 7 . To do this, the user grips the outer member 31 with the palm of the hand or between the index finger and the little finger, and then operates the lever 41 by pressing the operating unit 45 toward the outer peripheral surface 31f of the outer member 31 with the thumb or the like. That is, a portion of the outer member 31 located at the same height as the locking unit 40 in the vertical direction forms a gripping unit used to shorten the leg module 24. When the lever 41 is operated, the lever 41 rotates around the shaft 46, and the lower end of the base 43 is displaced in a direction away from the outer peripheral surface 31f of the outer member 31. As a result, the engaging unit 44 disengages from one of the engaged units 32h, transitioning from the restrained state P1 to the released state P2. At this time, the user may grasp the outer member 31 of the leg member 25 adjacent in the front-to-back direction Da in one support leg 21 with both hands, and operate the lever 41 by pressing the operating part 45 of the leg member 25 adjacent in the front-to-back direction Da with the thumbs of both hands.

[0053] In the released state P2, the engaging portion 44 is disengaged from at least the inner member 32 of the outer member 31 and the inner member 32, and relative displacement in the vertical direction Dv between the outer member 31 and the inner member 32 is permitted. In this state, by lowering the tabletop 10, the outer member 31 and the inner member 32 are displaced relative to each other in a direction in which the leg member 25 contracts in the vertical direction Dv (shortening operation of the leg module 24). When the tabletop 10 is lowered to a desired height and the engaging portion 44 and the other engaged portion 32h located below one of the engaged portions 32h are positioned at the same position in the vertical direction Dv, the user releases the pressure on the operating portion 45. As shown in FIG. 6 , the biasing force of the biasing member 48 causes the lever 41 to rotate around the shaft 46, and the engaging portion 44 is inserted into the engaged portion 32h. This returns the locking portion 40 from the released state P2 to the locked state P1, and the tabletop 10 can be fixed at the desired height. Note that, in the contraction operation of the leg module 24, the pressure on the operating portion 45 may be released when the engaging portion 44 disengages from one of the engaged portions 32h and does not face any of the engaged portions 32h. In this case, the biasing force of the biasing member 48 causes the outer member 31 to move downward relative to the inner member 32 while the tip of the engaging portion 44 remains in sliding contact with the outer peripheral surface of the inner member 32. Then, when the engaging portion 44 reaches a portion facing another engaged portion 32h located below the one engaged portion 32h, the lever 41 is allowed to return to the restrained state P1.

[0054] In this way, in order to lower the tabletop 10, the leg members 25 must be retracted in the vertical direction Dv by operating the lever 41. Therefore, unless the lever 41 is operated, the leg members 25 are prevented from being inadvertently retracted and the tabletop 10 is prevented from being lowered.

[0055] As described above, in this embodiment, the tabletop-equipped furniture 1 comprises a tabletop 10 having an upwardly facing work surface 10f, and a support structure 20 that supports the tabletop 10 from below. The support structure 20 comprises a cylindrical outer member 31 that extends in the vertical direction Dv, and an inner member 32 that extends in the vertical direction Dv and is inserted inside the outer member 31 and is provided so as to be displaceable relative to the outer member 31 in the vertical direction Dv. One of the outer member 31 and the inner member 32 is connected to the tabletop 10, and the other of the outer member 31 and the inner member 32 is connected to a leg member 25 that comes into contact with the floor surface F, and the outer member 31 and a locking unit 40 capable of restraining relative displacement of the outer member 31 and the inner member 32 in the vertical direction Dv, and the locking unit 40 is switchable between a restrained state P1 in which relative displacement of the outer member 31 and the inner member 32 in the vertical direction Dv is restrained, and a released state P2 in which relative displacement of the outer member 31 and the inner member 32 in the vertical direction Dv is permitted.The locking unit 40 is configured to maintain the restrained state P1 against relative displacement of the leg member 25 in the direction of contraction in the vertical direction Dv, but to transition from the restrained state P1 to the released state P2 in response to relative displacement of the leg member 25 in the direction of extension in the vertical direction Dv. According to this configuration, the locking unit 40 maintains a constrained state P1 against relative displacement of the leg member 25 in the direction of contraction in the up-down direction Dv, while transitioning from the constrained state P1 to a released state P2 in response to relative displacement of the leg member 25 in the direction of extension in the up-down direction Dv. As a result, under normal circumstances, when the load of the tabletop 10 is acting on the leg member 25, the locking unit 40 in the constrained state P1 maintains the leg member 25 in a constrained state against relative displacement of the leg member 25 in the direction of contraction in the up-down direction Dv, thereby fixing the length of the leg member 25 in the up-down direction Dv and enabling the tabletop 10 to be maintained at a constant height. In order to raise the tabletop 10, when the tabletop 10 is lifted and the outer member 31 and the inner member 32 are displaced relative to each other in the direction in which the leg members 25 extend in the up-down direction Dv, the locking portion 40 transitions from the restrained state P1 to the released state P2. Therefore, when raising the tabletop 10, it is only necessary to lift the tabletop 10, and no other operation is required to transition the locking portion 40 from the restrained state P1 to the released state P2. As a result, the height of the tabletop 10 can be easily adjusted.

[0056] In this embodiment, the locking portion 40 includes a lever 41 provided on the outer peripheral surface 31f of the outer member 31, and the lever 41 is movable along a direction intersecting the vertical direction Dv. The lever 41 has an engagement portion 44 that engages with both the outer member 31 and the inner member 32 in the constrained state P1 and disengages from at least the inner member 32 of the outer member 31 and the inner member 32 in the released state P2, and an operating portion 45 that moves the engagement portion 44 from the constrained state P1 to the released state P2. According to this configuration, in the constrained state P1, the engaging portion 44 engages with both the outer member 31 and the inner member 32, thereby constraining the relative displacement of the outer member 31 and the inner member 32 in the up-down direction Dv. This fixes the length of the leg member 25 in the up-down direction Dv. When the operating portion 45 of the lever 41 is operated to move the engaging portion 44 from the constrained state P1 to the released state P2, the engaging portion 44 disengages from at least the inner member 32 of the outer member 31 and the inner member 32. This allows the outer member 31 and the inner member 32 to be displaced relative to each other in the up-down direction Dv, making it possible to adjust the length of the leg member 25 in the up-down direction Dv.

[0057] In this embodiment, the operating unit 45 is configured to be able to be pushed closer to the outer surface 31f of the outer member 31 in a direction intersecting the vertical direction Dv while holding the outer member 31, and the locking unit 40 is configured to transition from the restrained state P1 to the released state P2 when the operating unit 45 is pushed. According to this configuration, by pressing the operating portion 45, the locking portion 40 can be easily shifted from the restrained state P1 to the released state P2.

[0058] In this embodiment, the lever 41 extends in the vertical direction Dv, and its intermediate portion in the vertical direction Dv is rotatable around an axis 46 horizontally aligned with the outer member 31. The lever 41 comprises a base 43 having an operating portion 45 at one end in the vertical direction Dv, and an engaging portion 44 extending from the other end of the base 43 in the vertical direction Dv toward the inside of the outer member 31. When the operating portion 45, which is located at a position away from the axis 46 on one side in the vertical direction Dv, is pushed in toward the outer surface 31f of the outer member 31 in a direction intersecting the vertical direction Dv, the lever 41 rotates around the axis 46, causing the engaging portion 44 to disengage from at least the inner member 32 of the outer member 31 and the inner member 32, and transitioning from the constrained state P1 to the released state P2. According to this configuration, the lever 41 is integrally provided with the operating portion 45 and the engaging portion 44, thereby suppressing an increase in the number of parts. Furthermore, when the operating portion 45 is pressed, the engaging portion 44 disengages from at least the inner member 32 of the outer member 31 and the inner member 32, and transitions from the constrained state P1 to the released state P2. This makes it possible to transition the locking portion 40 from the constrained state P1 to the released state P2 and extend or retract the leg member 25 with a simple operation.

[0059] In this embodiment, the inner member 32 has an engaged portion 32h with which the engaging portion 44 can engage, and the outer member 31 and the inner member 32 are displaced relative to each other in the direction in which the leg member 25 extends in the vertical direction Dv, and the engaged portion 32h presses the engaging portion 44 in the vertical direction Dv, causing the lever 41 to rotate around the axis 46 and transition from the restrained state P1 to the released state P2. According to this configuration, in the restrained state P1, the engaging portion 44 engages with the engaged portion 32h of the inner member 32, thereby restraining the relative displacement of the outer member 31 and the inner member 32 and fixing the length of the leg member 25. When the outer member 31 and the inner member 32 are relatively displaced in the direction in which the leg member 25 extends in the up-down direction Dv, the engaged portion 32h presses the engaging portion 44, causing the lever 41 to rotate around the shaft 46. As a result, by lifting the tabletop 10 and extending the leg member 25 in the up-down direction Dv, the locking portion 40 can be transitioned from the restrained state P1 to the released state P2, eliminating the need to specifically operate the locking portion 40. Therefore, the height of the tabletop 10 can be easily adjusted.

[0060] In this embodiment, the support structure 20 includes a plurality of leg members 25, and the locking portion 40 is provided on each of the adjacent leg members 25. According to this configuration, the user can use both hands to push in the operating portions 45 of the locking portions 40 of adjacent leg members 25. This allows the height of the tabletop 10 to be easily adjusted.

[0061] In this embodiment, the locking portions 40 provided on each of the leg members 25 are configured to be provided on portions of adjacent leg members 25 that face each other. According to this configuration, the locking portions 40 are provided on the mutually facing portions of the adjacent leg members 25, so that the operating portion 45 can be easily pressed with the thumbs of both hands. Also, the locking portions 40 are prevented from protruding in a direction different from the mutually facing portions of the adjacent leg members 25, which prevents the user's lower limbs and the like from interfering with the locking portions 40.

[0062] In this embodiment, the locking portion 40 further includes a housing 49 provided on the outer peripheral surface 31f of the outer member 31 and having an opening 49a that opens toward the outside of the outer member 31, and the lever 41 is configured to be housed inside the opening 49a. According to this configuration, the lever 41 is housed inside the opening 49a of the housing 49, which not only improves the appearance but also prevents the lever 41 from interfering with the user's lower limbs, etc., and being operated inadvertently.

[0063] (Modification of the embodiment) A modified example of the embodiment described above will be described. The modified example of the embodiment described below differs from the fixture with a top panel 1 of the above embodiment in the configuration of the locking portion 40B, and components common to the above embodiment will be assigned the same reference numerals in the drawings and will not be described again. In the above-described embodiment, the locking portion 40 is configured so that, when the operating portion 45 of the lever 41 is pressed, the lever 41 rotates, the engaging portion 44 disengages from the engaged portion 32h, and the locking portion 40 transitions from the restrained state P1 to the released state P2, but this is not limited to this. Fig. 11 is a perspective view showing a leg member 25B of a tabletop-equipped furniture 1 according to a modified example of this embodiment. Fig. 12 is a cross-sectional view of the leg member 25B as viewed from the width direction Dw. As shown in FIGS. 11 and 12, each leg module 24 of the tabletop-equipped furniture 1 in this modified example includes a leg member 25B and a locking portion 40B.

[0064] The leg member 25B includes an outer member 31B and an inner member 32B. In this modification, the outer member 31B and the inner member 32B are, for example, in the shape of a rectangular tube.

[0065] The inner member 32B has a plurality of engaged portions 32g formed at intervals in the up-down direction Dv. The plurality of engaged portions 32g are formed on one side surface portion 32k of the inner member 32B facing the front-rear direction Da. In this embodiment, the engaged portion 32g is a hole that penetrates the side surface portion 32k of the rectangular cylindrical inner member 32B in the front-rear direction Da. 11, the inner member 32B is formed with a slit 36 ​​extending in the up-down direction Dv. The slit 36 ​​is formed in the center of the multiple engaged portions 32g in the width direction Dw. The slit 36 ​​connects the multiple engaged portions 32g in the up-down direction Dv.

[0066] 11 and 12, the locking portion 40B includes an operating member 51, a support member 55, and a biasing member 56. The locking portion 40B is provided on the outer peripheral surface 31g of the outer member 31B.

[0067] The actuating member 51 integrally includes an engaging portion 52, an operating portion 53, and a rod portion 54. The engaging portion 52 is disposed inside the inner member 32B. The engaging portion 52 integrally includes, for example, a rectangular parallelepiped-shaped engaging portion main body 52b and a protrusion 52t.

[0068] The protrusion 52t protrudes from the engaging portion main body 52b toward the outside of the inner member 32B in the front-rear direction Da. The protrusion 52t has an inclined surface 52s that slopes downward from above toward the outside of the inner member 32B. The protrusion 52t is engageable with an engaged portion 32g formed on the outer member 31B.

[0069] The operating unit 53 is provided on the outside of the inner member 32B. The operating unit 53 is provided away from the actuating member 51 in the front-rear direction Da. The operating unit 53 is formed, for example, in the shape of a rectangular plate when viewed in the front-rear direction Da. A recess 53a recessed downward is formed at the upper end of the operating unit 53. A recess 53b recessed upward is formed at the lower end of the operating unit 53.

[0070] The rod portion 54 extends in the front-rear direction Da and connects the engagement portion 52 and the operating portion 53. One end of the rod portion 54 is connected to the center of the inclined surface 52s of the protrusion 52t. The other end of the rod portion 54 is connected to the center of the operating portion 53 in the up-down direction Dv and the width direction Dw. An intermediate portion of the rod portion 54 penetrates the outer member 31B from the inside to the outside through a through-hole 31j (see FIG. 12) formed in the outer member 31B. In addition, the intermediate portion of the rod portion 54 is positioned so as to overlap the slit 36 ​​when viewed from the up-down direction Dv.

[0071] The support members 55 support the actuating member 51 movably in the front-rear direction Da relative to the outer member 31B. A pair of support members 55 are provided on the outer peripheral surface 31g of the outer member 31B with a gap in the up-down direction Dv. Each of the pair of support members 55 extends outward from the outer member 31B in the front-rear direction Da. The pair of support members 55 are disposed in the recesses 53a, 53b. The pair of support members 55 support the operating unit 53 movably in the front-rear direction Da while restricting movement of the operating unit 53 in the up-down direction Dv. As a result, the engaging portion 52 is configured to be movable in the front-rear direction Da together with the operating unit 53 supported by the pair of support members 55.

[0072] A stopper portion 55s is provided at the tip of each of the pair of support members 55. The stopper portion 55s of the upper support member 55 extends downward from the tip of the support member 55. The stopper portion 55s of the lower support member 55 extends upward from the tip of the support member 55. The operation portion 53 abuts against the upper and lower stopper portions 55s, thereby restricting movement of the operation portion 53 in a direction away from the outer circumferential surface 31g in the front-rear direction Da.

[0073] The biasing member 56 biases the operating portion 53 in a direction away from the outer peripheral surface 31g of the outer member 31B in the front-rear direction Da. The biasing member 56 is, for example, an arc-shaped leaf spring when viewed in the width direction Dw. The biasing member 56 is not limited to a leaf spring, and may be a coil spring or the like. One end of the biasing member 56 abuts against the outer peripheral surface 31g of the outer member 31B. The other end of the biasing member 56 abuts against the operating member 51. The rod portion 54 penetrates the biasing member 56 in the front-rear direction. The biasing member 56 is compressed in the front-rear direction Da between the outer peripheral surface 31g and the operating member 51. As a result, the engaging portion 52 is biased toward the outside of the inner member 32B in the front-rear direction Da.

[0074] In this way, the operating member 51 is provided so as to be movable in the front-rear direction Da relative to the outer member 31B, and the protrusion 52t of the engaging portion 52 is configured so as to be insertable into and detachable from the engaged portion 32g.

[0075] The locking section 40B equipped with such an operating member 51 can be switched between a restrained state P1 (see Figures 11 and 12) in which the relative displacement between the outer member 31B and the inner member 32B in the vertical direction Dv is restrained, and a released state P2 (see Figures 13 and 14) in which the relative displacement between the outer member 31B and the inner member 32B in the vertical direction Dv is permitted.

[0076] When the tabletop-equipped furniture 1 is in use, the locking portion 40B is in a restrained state P11, in which the relative displacement of the outer member 31B and the inner member 32B in the up-down direction Dv is restrained, as shown in FIGS. 11 and 12 . In the restrained state P11, the protrusion 52t of the engaging portion 52 is inserted into the engaged portion 32g. At this time, the protrusion 52t of the engaging portion 52 abuts against the lower edge of the engaged portion 32g from above. The engaging portion 52 maintains a state in which the protrusion 52t is inserted into the engaged portion 32g due to the biasing force of the biasing member 56. In other words, in the restrained state P11, the locking portion 40B maintains a state in which the relative displacement of the outer member 31B and the inner member 32B in the up-down direction Dv in the direction in which the leg member 25B contracts in the up-down direction Dv is restrained.

[0077] FIG. 13 is a cross-sectional view showing the locking portion 40B in a state where the top plate 10 is lifted to extend the leg member 25B in the vertical direction Dv, and the inner member 32B is displaced downward relative to the outer member 31B. To raise the tabletop 10, the user lifts the tabletop 10. As a result, as shown in FIG. 13 , the outer member 31B is displaced upward relative to the inner member 32B, and the leg member 25B extends in the vertical direction Dv (extension of the leg module 24). At this time, when the inclined surface 52s of the protrusion 52t abuts against the upper edge of the engaged portion 32g from below, the engaging portion 52 is pressed toward the inside of the inner member 32B in the front-to-rear direction Da. Then, the protrusion 52t of the engaging portion 52 disengages from the engaged portion 32g. This releases the constraint on the relative displacement of the outer member 31B and the inner member 32B in the vertical direction Dv, resulting in a transition from the constrained state P11 to the unconstrained state P12. As a result, the leg member 25B extends in the vertical direction Dv. At this time, the rod portion 54 passes through the slit 36 ​​of the inner member 32B, which is displaced in the vertical direction Dv relative to the outer member 31B.

[0078] As the outer member 31B and the inner member 32B are displaced relative to each other in the direction in which the leg member 25B extends in the up-down direction Dv, the engaging portion 52 that has disengaged from the engaged portion 32g moves upward relative to the inner member 32B due to the biasing force of the biasing member 56, with the tip of the protrusion 52t remaining in sliding contact with the inner circumferential surface of the inner member 32B. At this time, the tip of the protrusion 52t abuts against the inner circumferential surface of the inner member 32B, causing the locking portion 40B to maintain the released state P12 and to be restricted from returning to the restrained state P11.

[0079] Thereafter, when the engaging portion 52 reaches a portion facing another engaged portion 32g located above the disengaged engaged portion 32g, the engaging portion 52 is allowed to return to the locked state P11. Because the operating member 51 is biased by the biasing member 56, the protrusion 52t of the engaging portion 52 is inserted into the engaged portion 32g. This causes the locking portion 40B to return from the released state P12 to the locked state P11.

[0080] FIG. 14 is a cross-sectional view showing the locking portion 40B in the released state P12. 14, the user presses the operating unit 53 in the front-rear direction Da toward the outer peripheral surface 31g of the outer member 31B (toward the inside of the outer member 31B). When the operating unit 53 is operated, the actuating member 51 is displaced toward the inside of the outer member 31B, and the protrusion 52t of the engaging portion 52 is released from the engaged portion 32g, resulting in a transition from the restrained state P11 to the released state P12.

[0081] In the released state P12, the engaging portion 52 disengages from one of the engaged portions 32g, allowing the outer member 31B and the inner member 32B to move relatively in the up-down direction Dv. In this state, by lowering the tabletop 10, the outer member 31B and the inner member 32B move relatively in the direction in which the leg member 25B contracts in the up-down direction Dv (shortening operation of the leg module 24). When the tabletop 10 is lowered to a desired height and the engaging portion 52 and the other engaged portion 32g positioned below the one engaged portion 32g are at the same position in the vertical direction Dv, the user releases the pressure on the operating portion 53, and as shown in Fig. 12, the engaging portion 52 is inserted into the engaged portion 32g by the biasing force of the biasing member 56. This returns the locking portion 40B from the released state P12 to the locked state P11, and the tabletop 10 can be fixed at the desired height.

[0082] In this way, in the modified example of this embodiment, the height of the tabletop 10 can be easily adjusted, just like in the above embodiment.

[0083] (Other embodiments) Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Addition, omission, substitution, and other modifications of the configuration are possible without departing from the spirit of the present invention. The present invention is not limited by the above description, but is limited only by the appended claims. For example, in the above-described embodiment, the leg member 25 is configured so that the outer member 31 is connected to the tabletop 10 and the inner member 32 is in contact with the floor surface F, but this is not limited to this. The leg member 25 may be configured so that the inner member 32 is connected to the tabletop 10 and the outer member 31 is in contact with the floor surface F. In this case, the orientation of the locking portion 40 is also inverted in the vertical direction Dv.

[0084] In the above-described embodiment, the locking unit 40 is configured to transition from the restrained state P1 to the released state P2 by pressing the operating portion 45 of the lever 41, but the present invention is not limited to this. For example, the locking unit 40 may be configured to transition from the restrained state P1 to the released state P2 by operating the operating portion 45 of the lever 41 in other operating modes, such as pulling in a direction away from the outer peripheral surface 31f of the outer member 31, pressing in a tangential direction of the outer peripheral surface 31f of the outer member 31, pulling up or down in the vertical direction Dv along the outer peripheral surface 31f of the outer member 31, or other sliding or rotating operations.

[0085] In the above-described embodiment, the locking portions 40 are provided on the portions of the leg members 25 that face each other adjacent to each other in the front-rear direction Da, but this is not limited to this. The locking portions 40 may be provided on portions of the leg members 25 that face each other adjacent to each other in the front-rear direction Da. In this case, the installation orientation of the locking portions 40 is not limited to the front-rear direction Da, and may be in another orientation. The locking portions 40 may also be provided on the mutually facing portions of the leg members 25 adjacent to each other in the width direction Dw.

[0086] In the above-described embodiment, the user grips the outer member 31 when operating the lever 41, but this is not limiting. A handle or the like separate from the outer member 31 may be provided on the outer member 31 as a grip portion so that the user can grip the lever 41 when operating the lever 41.

[0087] In the above-described embodiment, the support leg 21 is formed in a rectangular frame shape when viewed from the width direction Dw, and is configured to have a pair of leg modules 24, a lower connecting member 26, and an upper connecting member 27, but this is not limiting. For example, the lower connecting member 26 and the upper connecting member 27 may be omitted, and the pair of leg modules 24 may be configured to be able to extend and retract individually. Furthermore, the number of leg members 25 provided on the tabletop-equipped furniture 1 is not limited in any way, and for example, one leg member 25 may support the tabletop 10 from below. Furthermore, the furniture with a top 1 is not limited to a desk, but may also be a table, a counter, a shelf, or the like. In addition, within the scope of the spirit of the present invention, it is possible to replace the components in the above-described embodiments with well-known components as appropriate, and the above-described modified examples may be combined as appropriate. [Explanation of symbols]

[0088] 1...Fixtures with tops 10...Tabletop 10f...Work surface 20...Support structure 25, 25B...leg member 31, 31B...Outer member 31f, 31g...outer surface 32, 32B...Inner member 32h, 32g…Engaged part 40, 40B...Lock section 41... Lever (operating member) 43...Base 44, 52...Engagement parts 45, 53...Operation unit 46...Axis 49…Housing 49a...Opening 51...operating member P1, P11...Restrained state P2, P12...Restraint released Dv…Vertical direction Da: Front-to-rear direction (first direction) Dw: Width direction (second direction)

Claims

1. a top plate having an upwardly facing work surface; a support structure that supports the top plate from below, The support structure includes: a leg member that is extendable in the vertical direction and includes a cylindrical outer member that extends in the vertical direction, an inner member that extends in the vertical direction and is inserted into the outer member and is provided so as to be displaceable in the vertical direction relative to the outer member; a locking portion capable of restricting relative displacement of the outer member and the inner member in the up-down direction, the locking portion is switchable between a restraining state in which the outer member and the inner member are restrained from relative displacement in the up-down direction and a restraint-released state in which the outer member and the inner member are allowed to be relative displaced in the up-down direction, The locking portion maintains the restrained state against relative displacement of the leg member in a direction in which the leg member contracts in the up-down direction, and is transitioned from the restrained state to the released state by the leg member in accordance with relative displacement of the leg member in a direction in which the leg member extends in the up-down direction. Display unit with top.

2. the locking portion includes an operating member provided on an outer peripheral surface of the outer member, The actuating member is an engaging portion that is provided to be movable in a first direction that approaches or moves away from the outer peripheral surface of the outer member among directions that intersect with the up-down direction, and that engages with both the outer member and the inner member in the restrained state and disengages from at least the inner member out of the outer member and the inner member in the released state; an operating portion that moves the engaging portion from the restrained state to the released state; The display unit with a top plate according to claim 1.

3. the operating portion is provided so as to be capable of being pressed toward the outer peripheral surface of the outer member in the first direction while the outer member is being gripped, The locking portion transitions from the restrained state to the released state when the operating portion is pressed. The fixture with a top plate according to claim 2.

4. The actuating member is a base portion extending in a vertical direction along an outer peripheral surface of the outer member, and having an intermediate portion in the vertical direction rotatable about an axis along a second direction intersecting the first direction when viewed from the vertical direction; the engaging portion extending from the other end of the base in the up-down direction toward the inside of the outer member, When the operating portion, which is provided at a position spaced apart from the shaft in one of the up and down directions, is pressed in, the actuating member rotates around the shaft, causing the engaging portion to disengage from at least the inner member of the outer member and the inner member, and transitioning from the restrained state to the released state. The fixture with a top plate according to claim 3.

5. the inner member has an engaged portion with which the engaging portion can engage, The outer member and the inner member are displaced relative to each other in the direction in which the leg member extends in the vertical direction, and the engaging portion is pressed in the vertical direction by the engaged portion, causing the operating member to rotate around the axis and transition from the constrained state to the released state. The fixture with a top plate according to claim 4.

6. the support structure includes a plurality of the leg members, The locking portion is provided on each of the adjacent leg members. The fixture with a top plate according to claim 3.

7. The locking portions provided on each of the leg members are provided on portions of the adjacent leg members that face each other. The fixture with a top plate according to claim 6.

8. The locking portion is a housing provided on the outer peripheral surface of the outer member and having an opening that opens toward the outside of the outer member, The actuating member is housed inside the opening. A display unit with a top plate according to claim 2 or 3.

Images