JP2022111168A - Furniture with flap top board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce work manhours for installation and removal in furniture in which installation and removal are constantly repeated in the same form.

SOLUTION: Furniture with a flap top board is provided with: a leg body having casters 4,5 capable of being selectively switched to a wheel lock state (L) or a wheel unlock state (N); a top board supported on the leg body and capable of flapping between a use posture and a jump posture; and a motion linkage means 3A for switching the casters 4,5 to the wheel lock state (L) or the wheel unlock state (N) by using the flap motion of the top board.

SELECTED DRAWING: Figure 16

COPYRIGHT: (C)2022,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to furniture with a flap top plate such as a flap table.

Conventionally, this type of furniture has legs that have casters that can be selectively switched between a wheel-locked state and a wheel-unlocked state, and a ceiling that is supported by the legs and capable of flapping between a use posture and a flip-up posture. A plate is known (see Patent Document 1, for example).

In this type of furniture, an operation lever for flapping the top plate and an operation body for switching the casters between the wheel-locked state and the wheel-unlocked state are provided separately.

However, if the operating lever for the flap operation and the operating body for the caster lock are provided separately and independently, there is an advantage that the degree of freedom of usage is high, but on the other hand, the installation and removal are always the same. In the case of furniture or the like that repeats the above, the burden on the installation worker cannot be ignored, and some improvement is desired.

Specifically, for example, an item such as a flap table that was stored in a storage with the top plate flipped up is moved to the place of use while maintaining that posture, and the operation lever is operated at a predetermined position. It is necessary to return the top plate to the use posture and operate the operating body to switch the casters from the wheel unlocked position to the wheel locked state. work is essential. Therefore, the number of man-hours required for installation and removal is increased, and the burden on workers is particularly large when the number of pieces of furniture is large.

JP 2017-81474 A

An object of the present invention is to reduce the number of man-hours for installing and removing furniture in which installation and removal are always repeated in the same manner, focusing on the above points.

The furniture with a flap top according to the invention of claim 1 comprises legs having casters that can be selectively switched between a wheel-locked state and a wheel-unlocked state; It comprises a top plate capable of flapping between the top plates, and an operation interlocking means for switching the casters to the wheel-locked state or the wheel-unlocked state by using the flapping motion of the top plate.

According to a second aspect of the present invention, there is provided a piece of furniture with a flap top according to the first aspect of the invention, wherein the motion interlocking means brings the caster into a wheel-locked state when the top is placed in the use posture, The caster is configured to switch to the wheel unlocked state when the top plate is in the flipped-up posture.

According to a third aspect of the invention, there is provided a piece of furniture with a flap top plate, wherein the caster has an operating portion for receiving an operating force, and the caster is operated to operate the operating portion. It is configured to selectively switch between a wheel locked state and a wheel unlocked state, and the motion interlocking means mechanically changes the motion of the top plate relative to the leg to the operating portion of the caster. It is to communicate.

According to a fourth aspect of the present invention, there is provided a piece of furniture with a flap top according to the third aspect, wherein the motion interlocking means rotates by a required angle as the top plate flaps relative to the legs. An interlocking cam is provided, and the rotation of the interlocking cam switches the caster between the wheel-locking state and the wheel-unlocking state. By rotating the caster, the caster can be switched from the wheel-locked state to the wheel-unlocked state.

According to a fifth aspect of the present invention, there is provided a piece of furniture with a flap top plate, wherein the interlocking cam abuts on the lower surface of the top plate and moves the interlocking cam together with the top plate to the predetermined angle. and an arc-shaped cam surface for separating the flap operation of the top plate from the rotation operation of the interlocking cam.

According to the present invention, it is possible to reduce the work man-hours for installation and removal of furniture for which installation and removal are always repeated in the same manner.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the furniture with a flap top plate which concerns on one Embodiment of this invention. The front view which shows the furniture with a flap top plate which concerns on the same embodiment. The enlarged side view which shows the furniture with a flap top plate which concerns on the same embodiment. The perspective view which shows the furniture with a flap top plate which concerns on the same embodiment. The front view which shows the furniture with a flap top plate which concerns on the same embodiment. The enlarged side view which shows the furniture with a flap top plate which concerns on the same embodiment. FIG. 6 is an enlarged cross-sectional view with some parts omitted along line AA in FIG. 5; The exploded perspective view which shows the caster which concerns on the same embodiment. FIG. 4 is an exploded perspective view showing a leg and a tabletop support mechanism according to the same embodiment; The perspective view which shows the operation interlocking means and the operation part for temporary release which concern on the same embodiment. FIG. 4 is an exploded perspective view showing a temporary release operating portion according to the same embodiment; Operation|movement explanatory drawing which concerns on the same embodiment. Operation|movement explanatory drawing which concerns on the same embodiment. Operation|movement explanatory drawing which concerns on the same embodiment. Operation|movement explanatory drawing which concerns on the same embodiment. Operation|movement explanatory drawing which concerns on the same embodiment. FIG. 2 is an enlarged plan cross-sectional view of a main part of the furniture with a flap top plate according to the same embodiment. The perspective view which shows an example of the installation aspect of the furniture with a flap top plate which concerns on the same embodiment.

An embodiment of the present invention will be described below with reference to the drawings.

In this embodiment, as shown in FIGS. 1 to 18, the present invention is applied to a piece of furniture T with a flap top called a flap table.

As shown in FIGS. 1 to 6, this flap-top-equipped furniture T has a pair of left and right legs 1A having casters 4 and 5 which can be selectively switched between a wheel-locked state (L) and a wheel-unlocked state (N). , 1B, a top plate 2 supported by the legs 1A and 1B and capable of flapping between the usage posture (U) and the flip-up posture (F), and the flap motion of the top plate 2. A left and right pair of operation interlocking means 3A, 3B for switching the casters 4, 5 to the wheel lock state (L) or the wheel unlock state (N) are provided.

Here, FIG. 1 is a perspective view showing the usage posture (U), FIG. 2 is a front view thereof, and FIG. 3 is an enlarged side view showing the usage posture (U). 4 is a perspective view showing the flip-up posture (F), FIG. 5 is a front view thereof, and FIG. 6 is an enlarged side view showing the flip-up posture (F). FIG. 7 is an enlarged cross-sectional view, partly omitted, taken along line AA in FIG. FIG. 8 is an exploded perspective view of the casters 4 and 5. As shown in FIG. FIG. 9 is an exploded perspective view showing the legs 1A and a tabletop support mechanism 6A, which will be described later. FIG. 10 is a perspective view showing the action interlocking means 3A, a temporary release operation section 7A, which will be described later, and a temporary release action conversion mechanism 8A, which will be described later.

The left leg 1A comprises a base 11 extending forward and backward, and a leg strut 12 erected on the base 11. A first caster is provided at the end of the base 11 on the usage edge x side. 4 is provided, and a second caster 5 is provided at the end on the non-use edge y side.

As shown in FIGS. 7 and 9, the base 11 is, for example, an aluminum die-cast channel-shaped one that opens downward, and the first and second casters 4 and 5 are mounted on both front and rear ends thereof. A caster mounting portion 111 is provided for this purpose. A mounting seat 112 for mounting the leg support 12 is provided at the intermediate portion of the base 11 in the front-rear direction. The mounting pedestal 112 is provided with a positioning protrusion 113 to which the lower end of the leg support 12 is fitted and positioned, a screw insertion hole 114 through which a mounting screw is inserted, and a vertically interlocking shaft 33, which will be described later. An insertion window 115 is provided for the insertion and a fitting recess 116 for mounting a bearing 35, which will be described later.

The leg support 12 is pipe-shaped, and a bottom plate nut 120 is fixed inside the portion near the lower end thereof. More specifically, the support leg 12 has a substantially pentagonal cross-section comprising a front wall 121 , a rear wall 122 , an inner wall 123 , an outer wall 124 and an outer inclined wall 125 . 2 and 5, the leg support 12 is biased outward so that the outer surface of the outer wall 124, that is, the outer surface 12a of the support support 12 is substantially flush with the outer surface 11a of the base 11. It stands on the base 11 in a moved state. Specifically, as shown in FIG. 9 , the lower end of the support pillar 12 is fitted onto the mounting base 112 of the base 11 and then inserted into the screw insertion hole 114 from the lower surface side of the base 11 . The leg strut 12 is mounted on the base 11 by screwing a screw (not shown) into the female screw hole 126 of the bottom plate nut 120 and tightening it.

The first caster 4 has an operation portion that receives an operation force, and is selectively switched to the wheel lock state (L) or the wheel unlock state (N) by operating the operation portion. It is constructed. 7 and 8, the caster 4 is mounted on the use edge x side of the base 11, i.e., on the front end side. A body 41, a turn base 42 disposed in the support body 41 and held so as to be capable of horizontal rotation via a thrust bearing 48, and a horizontal shaft 43 at a position off the center of rotation of the turn base 42. a wheel 44 attached thereto, a lock body 45 for engaging and disengaging from the wheel 44 to achieve a wheel locked state (L) or a wheel unlocked state (N), and a support body 41 held movably forward and backward. It comprises an operating portion 46 which is the operating portion, and a cam mechanism 47 which converts the forward/backward movement of the operating portion 46 into the upward/downward movement of the lock body 45 . More specifically, a plurality of engaging recesses 44a opened toward the hub side are formed adjacent to each other in the circumferential direction on the inner circumference of the rim portion 441 of the wheel 44. As shown in FIG. The lock body 45 is provided so as to be able to move up and down with a lock claw 451 provided at the tip positioned inside the rim portion 441. to lock the wheels 44 (L), while at the lowered position (K), the lock claws 451 are disengaged from the engagement recesses 44a to bring the wheels into the unlocked state (N). It has become. In addition, in this caster 4, a turn lock claw 452 is projected from the upper surface of the base end of the lock body 45, and when the lock body 45 is lifted to the upward movement position (J), the turn lock claw 452 is closed. is engaged with an engaging recess 41a for turning lock provided on the lower surface of the top wall of the support 41, so that turning of the turn base 42 is also prohibited. The cam mechanism 47 includes a cam follower 471 projecting from the upper surface of the base end of the locking body 45 and a cam 472 positioned above the cam follower 471 and formed on the lower surface of the operating portion 46 . be. The cam 472 has a deep groove portion 473 that allows upward movement of the lock body 45 having the cam follower 471, and a shallow groove portion 474 that pushes down the cam follower 471 to hold the lock body 45 at the lowered position (K). I have. In the first caster 4 described above, the deep groove portion 473 is positioned closer to the use edge x than the shallow groove portion 474, and when the operating portion 46 is positioned at the most advanced position (Z), the lock body 45 The cam follower 471 is pressed by the shallow groove portion 474 of the cam 472, the lock body 45 is pushed down to the lowered position (K), the lock claw 451 is disengaged from the engaging recess of the wheel 44, and the wheel 44 becomes free. That is, the wheels are unlocked (N). On the other hand, when the operating portion 46 is positioned at the most retracted position (B), the cam follower 471 of the lock body 45 corresponds to the deep groove portion 473 of the cam, and the lock body 45 is moved upward by the biasing force of the spring S1. Then, the locking claw 451 is engaged with one of the engagement recesses 44a of the wheels 44, and the rotation of the wheels 44 is prohibited. That is, the wheels are locked (L). Reference numeral 49 denotes a cover that covers the lower end opening of the turn base 42 .

The second caster 5 has an operation portion that receives an operation force, and is selectively switched to the wheel lock state (L) or the wheel unlock state (N) by operating the operation portion. It is constructed. That is, as shown in FIG. 7, the caster 5 is mounted on the opposite edge y side of the base 11, that is, on the rear side. , a turn base 52 disposed in the support 51 and held so as to be capable of horizontal rotation via a thrust bearing 58, and a horizontal shaft 53 pivotally attached to a position off the center of rotation of the turn base 52. a wheel 54, a lock body 55 for engaging and disengaging the wheel 54 to achieve a wheel locked state (L) or a wheel unlocked state (N), and the operation held movably back and forth by the support body 51. and a cam mechanism 57 that converts the longitudinal motion of the actuating portion 56 into the upward/downward motion of the lock body 55 . More specifically, a plurality of engaging recesses 54a opened toward the hub side are formed adjacent to each other in the circumferential direction on the inner circumference of the rim portion 541 of the wheel 54. As shown in FIG. The lock body 55 is provided so as to be able to move up and down with a lock claw 551 provided at the tip positioned inside the rim portion 541. Either one of them engages to bring the wheels 54 into the wheel locked state (L), while at the lowered position (K) the lock claws 551 are disengaged from the engagement recesses to bring the wheels into the unlocked state (N). ing. The cam mechanism 57 includes a cam follower 571 projecting from the upper surface of the base end of the locking body 55 and a cam 572 positioned above the cam follower 571 and formed on the lower surface of the operating portion 56 . be. The cam 572 has a deep groove portion 573 that allows upward movement of the lock body 55 having the cam follower 571, and a shallow groove portion 574 that pushes down the cam follower 571 to hold the lock body 55 at the lowered position (K). I have. Also in the second caster 5 described above, the deep groove portion 573 is positioned closer to the use edge x than the shallow groove portion 574, and when the operating portion 56 is positioned at the most advanced position (Z), the lock body 55 The cam follower 571 is pressed by the shallow groove portion 574 of the cam 572, the lock body 55 is pushed down to the lowered position (K), and the lock claw 551 is disengaged from the engaging recess 54a of the wheel 54, and the wheel 54 becomes free. That is, the wheels are unlocked (N). On the other hand, when the operating portion 56 is positioned at the most retracted position (B), the cam follower 571 of the lock body 55 corresponds to the deep groove portion 573 of the cam 572, and the lock body 55 is moved upward by the biasing force of the spring S1. As a result, the lock claw 551 engages with one of the engaging recesses 54a of the wheels 54, and the wheels 54 are prohibited from rotating. That is, the wheels are locked (L). Reference numeral 59 denotes a cover that covers the lower end opening of the turn base 52 .

7 and 10, the operating portion 46 of the first caster 4 and the operating portion 56 of the second caster 5 are moved by the caster interlocking member 13 accommodated in the base 11, as shown in FIGS. When the caster interlocking member 13 moves to the most retracted position (B) together with the operating portions 46 and 56, both the casters 4 and 5 are in the wheel lock state (L), and the caster interlocking member 13 are moved to the most advanced position (Z) together with the operating portions 46 and 56, the casters 4 and 5 are in the wheel unlocked state (N). In this embodiment, as shown by imaginary lines in FIGS. 9 and 10, a tension spring S2 is provided between the caster interlocking member 13 and the projection 11x provided on the base 11. The caster interlocking member 13 can be self-returned to the most retracted position (B) by the biasing force of the spring S2. That is, when no operating force is applied to the caster interlocking member 13, the caster interlocking member 13 is automatically retracted so that the first and second casters 4 and 5 are maintained in the wheel lock state (L). is set to

The right leg 1B and the left leg 1A are bilaterally symmetrical. The top plate 2 is supported on the legs 1A and 1B via top plate support mechanisms 6A and 6B so as to be able to flap.

The left top plate supporter 6A has a normal configuration as shown in FIG. A top plate receiver 62 for receiving the top plate 2 on the upper surface and a lock claw 63 for selectively locking the top plate receiver 62 in the use posture (U) and the flip-up posture (F) are arranged. It will be.

As shown in FIG. 9, the shaft plate 61 has an attachment portion 65 attached to the inner surface of the leg 1A using screws, and a main shaft 67 extending upward from the attachment portion 65 to support the top plate receiver 62. and a head portion 66 that is axially supported through the . The head portion 66 engages with the lock claw 63 to lock the top plate 2 in the use posture (U), and engages with the lock claw 63 to flip up the top plate 2. It is provided with a pawl receiver 60 having a second locking portion 602 that locks in the posture (F).

As shown in FIG. 9, the top plate receiver 62 includes a top plate 621 attached to the bottom surface 2a of the top plate 2, and a pair of plates extending from both side edges of the top plate 621 and positioned on both sides of the head portion 66. It is provided with side plates 622 and 623 forming the

As shown in FIG. 9, the lock claw 63 is, for example, sickle-shaped with a bent portion 631 on the distal end side, and the drive shaft 633 is inserted through the proximal end portion 632 so as to be integrally rotatable. An outer end 63a of the drive shaft 633 protrudes outward from one of the side plates 622, and the flap operation operating portion 630 is attached to the outer end 63a. The flap operation operating portion 630 is of a lever type unlike the temporary release operating portion 7 described later. The lock claw 63 is urged to rotate toward the claw receiver 60 of the shaft plate 61 by a torsion coil spring or the like (not shown). The tip of the bent portion 631 engages with the second locking portion 602 of the claw receiver 60 in the flip-up posture (F).

The right tabletop support mechanism 6B is bilaterally symmetrical with the left tabletop support mechanism 6A described above, and the same or corresponding parts are denoted by the same reference numerals and descriptions thereof are omitted.

The shaft plates 61 of the left and right top plate support mechanisms 6A and 6B are rigidly connected via a connecting beam 91. As shown in FIG. In addition, the drive shafts 633 of the left and right top plate support mechanisms 6A and 6B are interlockably connected to each other via the operation interlocking beams 92 for flap operation.

As shown in FIGS. 1 to 6, the top plate 2 has a rectangular shape elongated in the left-right direction, and has the same structure as an ordinary wooden top plate, for example. Embedded nuts (not shown) for attaching the top plate receiver 62 are provided at both left and right ends of the lower surface 2a of the top plate 2. As shown in FIG. A fixed-type link stay 98, which is a supporting member for the curtain plate M described later, is attached to the non-use edge y side of the lower surface 2a of the top plate 2. As shown in FIG.

As shown in FIGS. 3, 5 and 6, the fixed type link stay 98 has a base end portion 981 attached to the lower surface 2a of the top plate 2 using a bolt (not shown). is pivotally attached to a mounting pedestal 63 of the curtain plate 6, which will be described later.

The motion interlocking means 3A provided on the left leg 1A causes the casters 4 and 5 to be in the wheel lock state (L) when the top plate 2 is in the use posture (U), and the top plate 2 is The casters 4 and 5 are configured to be switched to the wheel unlocked state (N) when the flip-up posture (F) is set. More specifically, the motion interlocking means 3 converts the flapping motion of the top plate 2 into the front-rear motion of the caster interlocking member 13 to move the first and second casters 4 and 5 into the wheel lock state (L). and the wheel unlocked state (N). Specifically, as shown in FIG. 10, the operation interlocking means 3 includes an interlocking drive shaft 31 rotatably mounted in the axial hole of the main shaft 67 and an outer side of the interlocking drive shaft 31. An interlocking cam 32 which is integrally rotatably provided at the end and which rotates by a required angle in accordance with the flap operation of the top plate 2 with respect to the legs 1A and 1B, and the rotation of the interlocking cam 32 toward the leg base 11 side. It comprises a vertically interlocking shaft 33 that transmits a vertical motion, and a motion conversion mechanism 34 that converts the vertical motion of the vertical interlocking shaft 33 into a longitudinal motion of the caster interlocking member 13 . In addition, the casters 4 and 5 are selectively switched between the wheel-locked state (L) and the wheel-unlocked state (N) by rotating the interlocking cam 32 .

The interlocking cam 32 has an arcuate cam surface 32a that contacts the lower surface 2a of the top plate 2, and is provided continuously with the arcuate cam surface 32a to contact the lower surface 2a of the top plate 2 when the cam surface 32a is in contact with the lower surface 2a of the top plate 2. and a planar cam surface 32b that rotates by a required angle. The center of rotation of the interlocking cam 32 coincides with the center of rotation of the top plate 2, which is the axis of the main shaft 67, and the lower surface 2a of the top plate 2 abuts on the planar cam surface 32b of the interlocking cam 32. In this state, the interlocking cam 32 and the top plate 2 are integrally rotatable about the axis. On the other hand, when the lower surface 2a of the top plate 2 is in contact with the arcuate cam surface 32a, the flapping motion of the top plate 2 and the rotating motion of the interlocking cam 32 are separated. A connecting hole 32x for pivoting the upper end portion of the vertical interlocking shaft 33 is provided at a portion of the interlocking cam 32 displaced from the axial center. That is, the vertical interlocking shaft 33 is housed in the leg pillar 12 so as to be vertically movable, and the upper end portion 33a thereof is bent in the horizontal direction. By engaging the bent upper end portion 33 a with the connecting hole 32 x of the interlocking cam 32 , the rotation of the interlocking cam 32 is converted into the up-and-down movement of the vertical interlocking shaft 33 .

10, 12 and 13, the motion converting mechanism 34 for converting the vertical motion of the vertical interlocking shaft 33 into the forward and backward motion of the caster interlocking member 13 includes the legs 1A of the top plate 2, 1B is mechanically transmitted to the operating parts 46, 56 of the casters 4, 5. Bearings 35 fixed to the legs 1A, 1B and hinge support shafts 30 are connected to the bearings 35. a caster interlocking hinge 36 pivotally supported by the caster interlocking hinge 36; a connecting pin 37 pivotally connecting the lower end portion 33b of the vertical interlocking shaft 33 to the caster interlocking hinge 36; A pin 38 and a cam receiver 39 for transmitting the movement of the drive pin 38 to the caster interlocking member 13 are provided. That is, when the vertical interlocking shaft 33 moves up and down, the caster interlocking hinge 36 connected to the vertical interlocking shaft 33 rotates around the hinge support shaft 30, and the drive pin 38 of the caster interlocking hinge 36 rotates in the front-rear direction. The rotational force of the drive pin 38 is transmitted to the caster interlocking member 13 via the cam receiver 39, and the caster interlocking member 13 moves back and forth between the most retracted position (B) and the most advanced position (Z). It is designed to be able to advance and retreat in the direction. Here, the bearing 35 is fixed to the leg 1A by being sandwiched between the joint portion between the leg support 12 and the base 11. As shown in FIG. More specifically, it comprises a pair of side walls 351 whose upper ends are connected to hold the hinge support shaft 30, and flanges 352 extending outward from the upper ends of both side walls 351. The flange 352 is fitted into the fitting recess 116 provided in the mounting seat 112 of the base 11, and then the base 11 and the leg strut 12 are tightened to be fixed to the leg 1A. It's becoming

The motion interlocking means 3B provided on the right leg 1B is bilaterally symmetrical with the motion interlocking means 3A provided on the left leg 1A described above, and the same or corresponding parts have the same parts. Reference numerals are attached and explanations are omitted. The interlocking drive shaft 31 of the action interlocking means 3A provided on the left leg 1A and the interlocking drive shaft 31 of the action interlocking means 3B provided on the right leg 1B are the caster lock operation interlocking beams. 93 are connected so as to be synchronously rotatable.

Further, on the top plate 2 of the furniture T with the flap top plate described above, a temporary release operation portion 7A for temporarily releasing the wheel lock state (L) to make the wheel unlock state (N), 7B is provided. The temporary release operating portions 7A and 7B are of a button type unlike the flap operation operating portion 630. As shown in FIG.

The temporary release operating portion 7A provided on the left side is provided near the edge of the lower surface of the top plate 2, more specifically near the corner where the use edge x and the side edge z intersect.

More specifically, as shown in FIGS. 10 and 11, the temporary release operation portion 7A includes an operation button 71 that receives an operation force and a housing 72 that holds the operation button 71 so that it can move up and down. The housing 72 is fixed to the lower surface 2a of the top plate 2 using screws or the like (not shown).

A temporary release operation conversion mechanism 8A is provided between the temporary release operation portion 7A and the operation interlocking means 3A to convert the upward/downward movement of the operation button 71 into the rotational movement of the interlocking cam 32. ing. As shown in FIG. 11, the temporary release motion converting mechanism 8A includes a slider 81 housed in the housing 72 so as to be slidable in the front-rear direction, and a front-rear mechanism interposed between the slider 81 and the interlocking cam 32. and an interlocking shaft 82 . The slider 81 has both left and right ends engaged with guide steps 721 provided on the inner wall 72a of the housing 72 so that it can advance and retreat in the front-rear direction. ing. When the operation button 71 is pressed and moved upward, the inclined cam surface 81a is biased by the upper edge of the operation button 71 so that the slider 81 slides toward the interlocking cam 32. It's becoming As described above, the front-rear interlocking shaft 82 is interposed between the slider 81 and the interlocking shaft receiver 32c provided on the outer periphery of the interlocking cam 32, and the slider 81 is directed toward the interlocking cam 32. When it slides, the interlocking cam 32 is biased by the front-rear interlocking shaft 82 to rotate. A projection 81b is formed on the use edge x side of the slider 81 at the center in the left-right direction. is provided. An upper surface of the operation button 71 is formed with a groove 71a for avoiding interference with the projection 81b and the compression spring. In the present embodiment, the interlocking cam 32 is rotated by a motion different from the flap motion of the top plate 2 by the temporary release operation portion 7A and the temporary release motion conversion mechanism 8A, so that the casters 4 and 5 are rotated as described above. It is also possible to switch from the wheel locked state (N) to the wheel unlocked state (L).

The temporary release operation section 7B and the temporary release motion conversion mechanism 8B provided on the right side have bilaterally symmetric shapes with the temporary release operation section 7A and the temporary release motion conversion mechanism 8A provided on the left side described above. Identical or corresponding parts are denoted by the same reference numerals and description thereof is omitted.

In addition, in this embodiment, a curtain board is arranged under the top plate 2 and hangs down from the top plate 2 in the use posture (U) and abuts or approaches the leg support 12 in the flip-up posture (F). It is equipped with M. As shown in FIGS. 1 to 6, the curtain plate M is formed by mounting caps M2 made of a soft material such as resin on both left and right sides of a hollow curtain plate main body M1 made of sheet metal. It has a first mounting pedestal M3 in the vicinity of the upper edge of both ends and a second mounting pedestal M4 in the vicinity of the lower edge of both left and right ends. A tip portion 913 of the link stay 98 is pivotally attached to the first mounting seat M3, and a tip portion 993 of a second link stay 99 pivotally attached to the legs 1A and 1B is attached to the second It is pivotally attached to the mounting base M4. Also, as shown in FIG. 17, in the flip-up posture (F), the cap M2 of the curtain plate M is engaged with the non-usage end surface 12b and the outer surface 12a of the both leg supports 12 in close proximity to or in contact with each other. It has a mating engagement portion Ma.

The operation of this embodiment will now be described.

As with the conventional furniture T, the flap top plate-equipped furniture T has a use posture (U) in which the top plate 2 is substantially horizontal and the top plate 2 is raised by operating a lever-type flap operation operation part 630. The flip-up posture (F) can be selectively taken. When the top plate 2 is in the use posture (U), as shown in FIGS. It is held, and the first and second casters 4 and 5 are in the wheel lock state (L). In other words, the left and right legs 1A and 1B are maintained in the braking state. When the top plate 2 is flapped from this state, the lower surface 2a of the top plate 2 abuts on the planar cam surface 32b of the interlocking cam 32 during the flapping operation. are integrally rotated about the axis to reach the flip-up posture (F) shown in FIG. At this time, the interlocking cam 32 rotates counterclockwise in the figure together with the top plate 2, and the vertical interlocking shaft 33 rises accordingly. As a result, the caster-linked hinge 36 rotates about the hinge support shaft 30, and the drive pin 38 of the caster-linked hinge 36 rotates forward. When the drive pin 38 rotates forward, the movement of the drive pin 38 is transmitted to the caster interlocking member 13 via the cam receiver 39, and the caster interlocking member 13 is moved to the most retracted position (retracted) while resisting the biasing force of the spring. B) slides to the most advanced position (Z). By this movement, the operating parts 46, 56 of the first and second casters 4, 5 move forward, and the locking bodies 45, 55 of the respective casters 4, 5 descend to switch to the wheel unlocked state (N). Accordingly, the legs 1A and 1B, which were in the braking state, are automatically brought into the non-braking state by simply flipping up the top plate 2, and can be freely moved. When the tabletop 2 is returned from the flipped-up posture (F) to the original use posture (U), the operations described above are reversed, and the legs 1A and 1B are put into the braking state again.

In such a state of use, when it is desired to temporarily release the braking state of the legs 1A and 1B without flipping up the top plate 2, the operation buttons 71 of the temporary release operation portions 7A and 7B provided on the top plate 2 are pressed. is pushed upward. Since this pressing operation can be performed simultaneously by gripping the use edge x or the side edge z of the top plate 2, the unlocking operation and the operation of gripping the edge of the top plate 2 and moving the entire top plate 2 can be performed continuously. It can be carried out. That is, when the operating button 71 is pressed upward, the upper edge of the operating button 71 comes into sliding contact with the inclined cam surface 81a of the slider 81, and the upward movement of the operating button 71 causes the slider 81 to slide in the y direction opposite to the use edge. converted. When the slider 81 slides in the direction opposite to the use edge y, this movement is transmitted to the outer circumference of the interlocking cam 32 through the front-rear interlocking shaft 82, and the interlocking cam 32 rotates counterclockwise in FIG. 14(b). move. As a result, although the top plate 2 is in the use posture (U), the rotation of the interlocking cam 32 causes the vertical interlocking shaft 33 to move upward, the caster interlocking member 13 to move forward, and the casters 4 and 5 to move forward. The wheel lock state (L) is switched to the wheel unlock state (N). Since this switched state is maintained while the operation button 71 is being pressed, the entire piece of furniture T with the flap top is temporarily moved while the operation button 71 is being pressed and the top 2 is held. It is possible to move to

In this embodiment, since the temporary release operation portions 7A and 7B are provided near the corners where the use edge x and the side edge z of the top plate 2 intersect, the operation can be performed even from the use edge x side. The above-described operation can be performed without difficulty from the side edge z side as well. Moreover, in this embodiment, such temporary release operating portions 7A and 7B are provided on both left and right sides of the top plate 2, and the left and right interlocking cams 32 engaged with the front and rear interlocking shafts 82 are rotatable integrally. Since the interlocking drive shaft 31 is connected by the caster lock operation interlocking beam 93 as described above, the wheel lock state (L) is temporarily released by operating either the left or right temporary release operation portion 7A or 7B. can be decommissioned.

As described above, in the present embodiment, the wheels 44 and 54 of the casters 4 and 5 can be switched between the locked state (L) and the unlocked state (N) by utilizing the flap motion of the top plate 2. In other words, By doing so, the legs 1A and 1B can be automatically switched between the braking state and the non-braking state, thus simplifying a series of operations. Therefore, it is possible to reduce the number of man-hours for installing and removing such furniture T with a flap top plate, and to reduce the burden on the operator. Moreover, the legs are braked/unbraked 1A, 1B by switching the wheels 44, 54 of the casters 4, 5 to the locked state (L) or the non-locked state (N). The switching operation can be performed with a relatively small force as compared with the switching between braking and non-braking by floating or landing on the surface. Therefore, it is possible to interlock the flapping operation with the braking/non-braking switching operation without adversely affecting the flapping operation of the top plate 2 .

In addition, in this embodiment, as shown in FIG. 18, when a table system is configured by arranging a plurality of tables T adjacent to each other in the lateral direction, the outer surfaces 12a of the adjacent leg supports 12 are in contact with each other. Since the two leg supports 12a appear as if they were a single pillar, the appearance of a plurality of tables T adjacent to each other in the lateral direction is reduced. Eliminate complexity. In addition, according to such a configuration, the internal dimension between the left and right leg supports 12 can be set as large as possible, which helps to substantially expand the leg space.

The present invention is not limited to the above-described embodiments, and may be applied to a structure in which the flap motion of the top plate is mechanically transmitted to the casters via hydraulic pressure or the like to switch the locked state, or a sensor or the like is used to detect the movement of the top plate. It may be converted into an electric signal, and based on the electric signal, an actuator or the like may be operated to switch the lock state of the caster. However, as described above, if the motion interlocking means mechanically transmits the flap motion of the top plate to the operating portion, which is the operating portion of the caster, through the link mechanism, the mechanism can be simplified and the motion can be improved. Reliability can be improved.

Moreover, the present invention is not limited to one that allows the leg to temporarily release the braking state in the use posture. However, according to the configuration as described above, the legs can be released from the braking state in the use posture without returning to the flip-up posture. is possible, and convenience can be improved. In addition, if the operating portion for flap operation is of the general lever type and the operating portion for temporary release is of the button type as described above, the temporary release operation of the braking state and the flap operation can be performed. It is further preferable in that it is difficult to confuse with the operation for performing.

Furthermore, the present invention is not limited to what is called a flap table, and can be applied to furniture in general having a top plate capable of flapping between the use posture and the flip-up posture. When applying to the flap table, it is desirable to lock the wheels in the use posture as in the above-described embodiment, considering the actual state of use.

In addition, any configuration may be adopted for the motion interlocking means for switching the caster between the wheel-locked state and the wheel-unlocked state using the flap motion of the top plate. However, according to the configuration according to the above-described embodiment, while making it easier to adjust the width of the operation stroke of the operation unit of the caster accompanying the flap operation of the top plate, the temporary release operation unit different from the flap operation of the top plate By making the interlocking cam rotatable also by the operation of , the caster can be brought into the wheel unlocked state even when the top plate is in the use posture. In addition, the interlocking cam contacts the lower surface of the top plate and rotates the interlocking cam together with the top plate by the required angle; a flap operation of the top plate and the interlocking cam; If it is provided with an arc-shaped cam surface for separating from the rotational movement of the caster, it is possible to easily adjust the width of the movement stroke of the operating portion of the caster.

In addition, various modifications may be made within the scope of the present invention.

T...Furniture with flap top plate 1A, 1B...Leg 2...Top plate 3A, 3B...Operation interlocking means 4, 5...Caster (L)...Wheel locked state (N)...Wheel unlocked state (U)...Using posture (F) … flip-up posture

TECHNICAL FIELD The present invention relates to furniture with a flap top plate such as a flap table.

Conventionally, this type of furniture has legs that have casters that can be selectively switched between a wheel-locked state and a wheel-unlocked state, and a ceiling that is supported by the legs and capable of flapping between a use posture and a flip-up posture. A plate is known (see Patent Document 1, for example).

In this type of furniture, an operation lever for flapping the top plate and an operation body for switching the casters between the wheel-locked state and the wheel-unlocked state are provided separately.

However, if the operating lever for the flap operation and the operating body for the caster lock are provided separately and independently, there is an advantage that the degree of freedom of usage is high, but on the other hand, the installation and removal are always the same. In the case of furniture or the like that repeats the above, the burden on the installation worker cannot be ignored, and some improvement is desired.

Specifically, for example, an item such as a flap table that was stored in a storage with the top plate flipped up is moved to the place of use while maintaining that posture, and the operation lever is operated at a predetermined position. It is necessary to return the top plate to the use posture and operate the operating body to switch the casters from the wheel unlocked position to the wheel locked state. work is essential. Therefore, the number of man-hours required for installation and removal is increased, and the burden on workers is particularly large when the number of pieces of furniture is large.

JP 2017-81474 A

An object of the present invention is to reduce the number of man-hours for installing and removing furniture in which installation and removal are always repeated in the same manner, focusing on the above points.

The furniture with a flap top according to the invention of claim 1 comprises legs having casters that can be selectively switched between a wheel-locked state and a wheel-unlocked state; and an operation interlocking means for switching the casters to the wheel-locked state or the wheel-unlocked state by using the flap motion of the top plate , wherein the The leg has a base on which the casters are attached to the front and rear ends thereof. The casters have an operation portion for receiving an operation force. By operating the operation portion, the wheel is locked or the wheel is It is configured to be selectively switched to an unlocked state, and when the operation interlocking means places the top plate in the use posture, the casters are in the wheel lock state and the top plate is flipped up. The caster is configured to switch to the wheel-unlocked state when the wheel is unlocked, and the operation force when the top plate performs relative motion with respect to the leg is mechanically transferred to the operation part of the caster It is to communicate .

According to a second aspect of the present invention, there is provided a piece of furniture with a flap top according to the first aspect, wherein the motion interlocking means rotates by a required angle as the top plate flaps relative to the legs. An interlocking cam is provided, and the rotation of the interlocking cam switches the caster between the wheel-locking state and the wheel-unlocking state. By rotating the caster, the caster can be switched from the wheel-locked state to the wheel-unlocked state.

According to a third aspect of the present invention, there is provided a piece of furniture with a flap top plate, wherein the interlocking cam abuts on the lower surface of the top plate and moves the interlocking cam together with the top plate to the predetermined angle. and an arc-shaped cam surface for separating the flap operation of the top plate from the rotation operation of the interlocking cam.

According to the present invention, it is possible to reduce the work man-hours for installation and removal of furniture for which installation and removal are always repeated in the same manner.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the furniture with a flap top plate which concerns on one Embodiment of this invention. The front view which shows the furniture with a flap top plate which concerns on the same embodiment. The enlarged side view which shows the furniture with a flap top plate which concerns on the same embodiment. The perspective view which shows the furniture with a flap top plate which concerns on the same embodiment. The front view which shows the furniture with a flap top plate which concerns on the same embodiment. The enlarged side view which shows the furniture with a flap top plate which concerns on the same embodiment. FIG. 6 is an enlarged cross-sectional view with some parts omitted along line AA in FIG. 5; The exploded perspective view which shows the caster which concerns on the same embodiment. FIG. 4 is an exploded perspective view showing a leg and a tabletop support mechanism according to the same embodiment; The perspective view which shows the operation interlocking means and the operation part for temporary release which concern on the same embodiment. FIG. 4 is an exploded perspective view showing a temporary release operating portion according to the same embodiment; Operation|movement explanatory drawing which concerns on the same embodiment. Operation|movement explanatory drawing which concerns on the same embodiment. Operation|movement explanatory drawing which concerns on the same embodiment. Operation|movement explanatory drawing which concerns on the same embodiment. Operation|movement explanatory drawing which concerns on the same embodiment. FIG. 2 is an enlarged plan cross-sectional view of a main part of the furniture with a flap top plate according to the same embodiment. The perspective view which shows an example of the installation aspect of the furniture with a flap top plate which concerns on the same embodiment.

An embodiment of the present invention will be described below with reference to the drawings.

In this embodiment, as shown in FIGS. 1 to 18, the present invention is applied to a piece of furniture T with a flap top called a flap table.

As shown in FIGS. 1 to 6, this flap-top-equipped furniture T has a pair of left and right legs 1A having casters 4 and 5 which can be selectively switched between a wheel-locked state (L) and a wheel-unlocked state (N). , 1B, a top plate 2 supported by the legs 1A and 1B and capable of flapping between the usage posture (U) and the flip-up posture (F), and the flap motion of the top plate 2. A left and right pair of operation interlocking means 3A, 3B for switching the casters 4, 5 to the wheel lock state (L) or the wheel unlock state (N) are provided.

Here, FIG. 1 is a perspective view showing the usage posture (U), FIG. 2 is a front view thereof, and FIG. 3 is an enlarged side view showing the usage posture (U). 4 is a perspective view showing the flip-up posture (F), FIG. 5 is a front view thereof, and FIG. 6 is an enlarged side view showing the flip-up posture (F). FIG. 7 is an enlarged cross-sectional view, partly omitted, taken along line AA in FIG. FIG. 8 is an exploded perspective view of the casters 4 and 5. As shown in FIG. FIG. 9 is an exploded perspective view showing the legs 1A and a tabletop support mechanism 6A, which will be described later. FIG. 10 is a perspective view showing the action interlocking means 3A, a temporary release operation section 7A, which will be described later, and a temporary release action conversion mechanism 8A, which will be described later.

The left leg 1A comprises a base 11 extending forward and backward, and a leg strut 12 erected on the base 11. A first caster is provided at the end of the base 11 on the usage edge x side. 4 is provided, and a second caster 5 is provided at the end on the non-use edge y side.

As shown in FIGS. 7 and 9, the base 11 is, for example, an aluminum die-cast channel-shaped one that opens downward, and the first and second casters 4 and 5 are mounted on both front and rear ends thereof. A caster mounting portion 111 is provided for this purpose. A mounting seat 112 for mounting the leg support 12 is provided at the intermediate portion of the base 11 in the front-rear direction. The mounting pedestal 112 is provided with a positioning protrusion 113 to which the lower end of the leg support 12 is fitted and positioned, a screw insertion hole 114 through which a mounting screw is inserted, and a vertically interlocking shaft 33, which will be described later. An insertion window 115 is provided for the insertion and a fitting recess 116 for mounting a bearing 35, which will be described later.

The leg support 12 is pipe-shaped, and a bottom plate nut 120 is fixed inside the portion near the lower end thereof. More specifically, the support leg 12 has a substantially pentagonal cross-section comprising a front wall 121 , a rear wall 122 , an inner wall 123 , an outer wall 124 and an outer inclined wall 125 . 2 and 5, the leg support 12 is biased outward so that the outer surface of the outer wall 124, that is, the outer surface 12a of the support support 12 is substantially flush with the outer surface 11a of the base 11. It stands on the base 11 in a moved state. Specifically, as shown in FIG. 9 , the lower end of the support pillar 12 is fitted onto the mounting base 112 of the base 11 and then inserted into the screw insertion hole 114 from the lower surface side of the base 11 . The leg strut 12 is mounted on the base 11 by screwing a screw (not shown) into the female screw hole 126 of the bottom plate nut 120 and tightening it.

The first caster 4 has an operation portion that receives an operation force, and is selectively switched to the wheel lock state (L) or the wheel unlock state (N) by operating the operation portion. It is constructed. 7 and 8, the caster 4 is mounted on the use edge x side of the base 11, i.e., on the front end side. A body 41, a turn base 42 disposed in the support body 41 and held so as to be capable of horizontal rotation via a thrust bearing 48, and a horizontal shaft 43 at a position off the center of rotation of the turn base 42. a wheel 44 attached thereto, a lock body 45 for engaging and disengaging from the wheel 44 to achieve a wheel locked state (L) or a wheel unlocked state (N), and a support body 41 held movably forward and backward. It comprises an operating portion 46 which is the operating portion, and a cam mechanism 47 which converts the forward/backward movement of the operating portion 46 into the upward/downward movement of the lock body 45 . More specifically, a plurality of engaging recesses 44a opened toward the hub side are formed adjacent to each other in the circumferential direction on the inner circumference of the rim portion 441 of the wheel 44. As shown in FIG. The lock body 45 is provided so as to be able to move up and down with a lock claw 451 provided at the tip positioned inside the rim portion 441. to lock the wheels 44 (L), while at the lowered position (K), the lock claws 451 are disengaged from the engagement recesses 44a to bring the wheels into the unlocked state (N). It has become. In addition, in this caster 4, a turn lock claw 452 is projected from the upper surface of the base end of the lock body 45, and when the lock body 45 is lifted to the upward movement position (J), the turn lock claw 452 is closed. is engaged with an engaging recess 41a for turning lock provided on the lower surface of the top wall of the support 41, so that turning of the turn base 42 is also prohibited. The cam mechanism 47 includes a cam follower 471 projecting from the upper surface of the base end of the locking body 45 and a cam 472 positioned above the cam follower 471 and formed on the lower surface of the operating portion 46 . be. The cam 472 has a deep groove portion 473 that allows upward movement of the lock body 45 having the cam follower 471, and a shallow groove portion 474 that pushes down the cam follower 471 to hold the lock body 45 at the lowered position (K). I have. In the first caster 4 described above, the deep groove portion 473 is positioned closer to the use edge x than the shallow groove portion 474, and when the operating portion 46 is positioned at the most advanced position (Z), the lock body 45 The cam follower 471 is pressed by the shallow groove portion 474 of the cam 472, the lock body 45 is pushed down to the lowered position (K), the lock claw 451 is disengaged from the engaging recess of the wheel 44, and the wheel 44 becomes free. That is, the wheels are unlocked (N). On the other hand, when the operating portion 46 is positioned at the most retracted position (B), the cam follower 471 of the lock body 45 corresponds to the deep groove portion 473 of the cam, and the lock body 45 is moved upward by the biasing force of the spring S1. Then, the locking claw 451 is engaged with one of the engagement recesses 44a of the wheels 44, and the rotation of the wheels 44 is prohibited. That is, the wheels are locked (L). Reference numeral 49 denotes a cover that covers the lower end opening of the turn base 42 .

The second caster 5 has an operation portion that receives an operation force, and is selectively switched to the wheel lock state (L) or the wheel unlock state (N) by operating the operation portion. It is constructed. That is, as shown in FIG. 7, the caster 5 is mounted on the opposite edge y side of the base 11, that is, on the rear side. , a turn base 52 disposed in the support 51 and held so as to be capable of horizontal rotation via a thrust bearing 58, and a horizontal shaft 53 pivotally attached to a position off the center of rotation of the turn base 52. a wheel 54, a lock body 55 for engaging and disengaging the wheel 54 to achieve a wheel locked state (L) or a wheel unlocked state (N), and the operation held movably back and forth by the support body 51. and a cam mechanism 57 that converts the longitudinal motion of the actuating portion 56 into the upward/downward motion of the lock body 55 . More specifically, a plurality of engaging recesses 54a opened toward the hub side are formed adjacent to each other in the circumferential direction on the inner circumference of the rim portion 541 of the wheel 54. As shown in FIG. The lock body 55 is provided so as to be able to move up and down with a lock claw 551 provided at the tip positioned inside the rim portion 541. Either one of them engages to bring the wheels 54 into the wheel locked state (L), while at the lowered position (K) the lock claws 551 are disengaged from the engagement recesses to bring the wheels into the unlocked state (N). ing. The cam mechanism 57 includes a cam follower 571 projecting from the upper surface of the base end of the locking body 55 and a cam 572 positioned above the cam follower 571 and formed on the lower surface of the operating portion 56 . be. The cam 572 has a deep groove portion 573 that allows upward movement of the lock body 55 having the cam follower 571, and a shallow groove portion 574 that pushes down the cam follower 571 to hold the lock body 55 at the lowered position (K). I have. Also in the second caster 5 described above, the deep groove portion 573 is positioned closer to the use edge x than the shallow groove portion 574, and when the operating portion 56 is positioned at the most advanced position (Z), the lock body 55 The cam follower 571 is pressed by the shallow groove portion 574 of the cam 572, the lock body 55 is pushed down to the lowered position (K), and the lock claw 551 is disengaged from the engaging recess 54a of the wheel 54, and the wheel 54 becomes free. That is, the wheels are unlocked (N). On the other hand, when the operating portion 56 is positioned at the most retracted position (B), the cam follower 571 of the lock body 55 corresponds to the deep groove portion 573 of the cam 572, and the lock body 55 is moved upward by the biasing force of the spring S1. As a result, the lock claw 551 engages with one of the engaging recesses 54a of the wheels 54, and the wheels 54 are prohibited from rotating. That is, the wheels are locked (L). Reference numeral 59 denotes a cover that covers the lower end opening of the turn base 52 .

7 and 10, the operating portion 46 of the first caster 4 and the operating portion 56 of the second caster 5 are moved by the caster interlocking member 13 accommodated in the base 11, as shown in FIGS. When the caster interlocking member 13 moves to the most retracted position (B) together with the operating portions 46 and 56, both the casters 4 and 5 are in the wheel lock state (L), and the caster interlocking member 13 are moved to the most advanced position (Z) together with the operating portions 46 and 56, the casters 4 and 5 are in the wheel unlocked state (N). In this embodiment, as shown by imaginary lines in FIGS. 9 and 10, a tension spring S2 is provided between the caster interlocking member 13 and the projection 11x provided on the base 11. The caster interlocking member 13 can be self-returned to the most retracted position (B) by the biasing force of the spring S2. That is, when no operating force is applied to the caster interlocking member 13, the caster interlocking member 13 is automatically retracted so that the first and second casters 4 and 5 are maintained in the wheel lock state (L). is set to

The right leg 1B and the left leg 1A are bilaterally symmetrical. The top plate 2 is supported on the legs 1A and 1B via top plate support mechanisms 6A and 6B so as to be able to flap.

The left top plate supporter 6A has a normal configuration as shown in FIG. A top plate receiver 62 for receiving the top plate 2 on the upper surface and a lock claw 63 for selectively locking the top plate receiver 62 in the use posture (U) and the flip-up posture (F) are arranged. It will be.

As shown in FIG. 9, the shaft plate 61 has an attachment portion 65 attached to the inner surface of the leg 1A using screws, and a main shaft 67 extending upward from the attachment portion 65 to support the top plate receiver 62. and a head portion 66 that is axially supported through the . The head portion 66 engages with the lock claw 63 to lock the top plate 2 in the use posture (U), and engages with the lock claw 63 to flip up the top plate 2. It is provided with a pawl receiver 60 having a second locking portion 602 that locks in the posture (F).

As shown in FIG. 9, the top plate receiver 62 includes a top plate 621 attached to the bottom surface 2a of the top plate 2, and a pair of plates extending from both side edges of the top plate 621 and positioned on both sides of the head portion 66. It is provided with side plates 622 and 623 forming the

As shown in FIG. 9, the lock claw 63 is, for example, sickle-shaped with a bent portion 631 on the distal end side, and the drive shaft 633 is inserted through the proximal end portion 632 so as to be integrally rotatable. An outer end 63a of the drive shaft 633 protrudes outward from one of the side plates 622, and the flap operation operating portion 630 is attached to the outer end 63a. The flap operation operating portion 630 is of a lever type unlike the temporary release operating portion 7 described later. The lock claw 63 is urged to rotate toward the claw receiver 60 of the shaft plate 61 by a torsion coil spring or the like (not shown). The tip of the bent portion 631 engages with the second locking portion 602 of the claw receiver 60 in the flip-up posture (F).

The right tabletop support mechanism 6B is bilaterally symmetrical with the left tabletop support mechanism 6A described above, and the same or corresponding parts are denoted by the same reference numerals and descriptions thereof are omitted.

The shaft plates 61 of the left and right top plate support mechanisms 6A and 6B are rigidly connected via a connecting beam 91. As shown in FIG. In addition, the drive shafts 633 of the left and right top plate support mechanisms 6A and 6B are interlockably connected to each other via the operation interlocking beams 92 for flap operation.

As shown in FIGS. 1 to 6, the top plate 2 has a rectangular shape elongated in the left-right direction, and has the same structure as an ordinary wooden top plate, for example. Embedded nuts (not shown) for attaching the top plate receiver 62 are provided at both left and right ends of the lower surface 2a of the top plate 2. As shown in FIG. A fixed-type link stay 98, which is a supporting member for the curtain plate M described later, is attached to the non-use edge y side of the lower surface 2a of the top plate 2. As shown in FIG.

As shown in FIGS. 3, 5 and 6, the fixed type link stay 98 has a base end portion 981 attached to the lower surface 2a of the top plate 2 using a bolt (not shown). is pivotally attached to a mounting pedestal 63 of the curtain plate 6, which will be described later.

The motion interlocking means 3A provided on the left leg 1A causes the casters 4 and 5 to be in the wheel lock state (L) when the top plate 2 is in the use posture (U), and the top plate 2 is The casters 4 and 5 are configured to be switched to the wheel unlocked state (N) when the flip-up posture (F) is set. More specifically, the motion interlocking means 3 converts the flapping motion of the top plate 2 into the front-rear motion of the caster interlocking member 13 to move the first and second casters 4 and 5 into the wheel lock state (L). and the wheel unlocked state (N). Specifically, as shown in FIG. 10, the operation interlocking means 3 includes an interlocking drive shaft 31 rotatably mounted in the axial hole of the main shaft 67 and an outer side of the interlocking drive shaft 31. An interlocking cam 32 which is integrally rotatably provided at the end and which rotates by a required angle in accordance with the flap operation of the top plate 2 with respect to the legs 1A and 1B, and the rotation of the interlocking cam 32 toward the leg base 11 side. It comprises a vertically interlocking shaft 33 that transmits a vertical motion, and a motion conversion mechanism 34 that converts the vertical motion of the vertical interlocking shaft 33 into a longitudinal motion of the caster interlocking member 13 . In addition, the casters 4 and 5 are selectively switched between the wheel-locked state (L) and the wheel-unlocked state (N) by rotating the interlocking cam 32 .

The interlocking cam 32 has an arcuate cam surface 32a that contacts the lower surface 2a of the top plate 2, and is provided continuously with the arcuate cam surface 32a to contact the lower surface 2a of the top plate 2 when the cam surface 32a is in contact with the lower surface 2a of the top plate 2. and a planar cam surface 32b that rotates by a required angle. The center of rotation of the interlocking cam 32 coincides with the center of rotation of the top plate 2, which is the axis of the main shaft 67, and the lower surface 2a of the top plate 2 abuts on the planar cam surface 32b of the interlocking cam 32. In this state, the interlocking cam 32 and the top plate 2 are integrally rotatable about the axis. On the other hand, when the lower surface 2a of the top plate 2 is in contact with the arcuate cam surface 32a, the flapping motion of the top plate 2 and the rotating motion of the interlocking cam 32 are separated. A connecting hole 32x for pivoting the upper end portion of the vertical interlocking shaft 33 is provided at a portion of the interlocking cam 32 displaced from the axial center. That is, the vertical interlocking shaft 33 is housed in the leg pillar 12 so as to be vertically movable, and the upper end portion 33a thereof is bent in the horizontal direction. By engaging the bent upper end portion 33 a with the connecting hole 32 x of the interlocking cam 32 , the rotation of the interlocking cam 32 is converted into the up-and-down movement of the vertical interlocking shaft 33 .

10, 12 and 13, the motion converting mechanism 34 for converting the vertical motion of the vertical interlocking shaft 33 into the forward and backward motion of the caster interlocking member 13 includes the legs 1A of the top plate 2, 1B is mechanically transmitted to the operating parts 46, 56 of the casters 4, 5. Bearings 35 fixed to the legs 1A, 1B and hinge support shafts 30 are connected to the bearings 35. a caster interlocking hinge 36 pivotally supported by the caster interlocking hinge 36; a connecting pin 37 pivotally connecting the lower end portion 33b of the vertical interlocking shaft 33 to the caster interlocking hinge 36; A pin 38 and a cam receiver 39 for transmitting the movement of the drive pin 38 to the caster interlocking member 13 are provided. That is, when the vertical interlocking shaft 33 moves up and down, the caster interlocking hinge 36 connected to the vertical interlocking shaft 33 rotates around the hinge support shaft 30, and the drive pin 38 of the caster interlocking hinge 36 rotates in the front-rear direction. The rotational force of the drive pin 38 is transmitted to the caster interlocking member 13 via the cam receiver 39, and the caster interlocking member 13 moves back and forth between the most retracted position (B) and the most advanced position (Z). It is designed to be able to advance and retreat in the direction. Here, the bearing 35 is fixed to the leg 1A by being sandwiched between the joint portion between the leg support 12 and the base 11. As shown in FIG. More specifically, it comprises a pair of side walls 351 whose upper ends are connected to hold the hinge support shaft 30, and flanges 352 extending outward from the upper ends of both side walls 351. The flange 352 is fitted into the fitting recess 116 provided in the mounting seat 112 of the base 11, and then the base 11 and the leg strut 12 are tightened to be fixed to the leg 1A. It's becoming

The motion interlocking means 3B provided on the right leg 1B is bilaterally symmetrical with the motion interlocking means 3A provided on the left leg 1A described above, and the same or corresponding parts have the same parts. Reference numerals are attached and explanations are omitted. The interlocking drive shaft 31 of the action interlocking means 3A provided on the left leg 1A and the interlocking drive shaft 31 of the action interlocking means 3B provided on the right leg 1B are the caster lock operation interlocking beams. 93 are connected so as to be synchronously rotatable.

Further, on the top plate 2 of the furniture T with the flap top plate described above, a temporary release operation portion 7A for temporarily releasing the wheel lock state (L) to make the wheel unlock state (N), 7B is provided. The temporary release operating portions 7A and 7B are of a button type unlike the flap operation operating portion 630. As shown in FIG.

The temporary release operating portion 7A provided on the left side is provided near the edge of the lower surface of the top plate 2, more specifically near the corner where the use edge x and the side edge z intersect.

More specifically, as shown in FIGS. 10 and 11, the temporary release operation portion 7A includes an operation button 71 that receives an operation force and a housing 72 that holds the operation button 71 so that it can move up and down. The housing 72 is fixed to the lower surface 2a of the top plate 2 using screws or the like (not shown).

A temporary release operation conversion mechanism 8A is provided between the temporary release operation portion 7A and the operation interlocking means 3A to convert the upward/downward movement of the operation button 71 into the rotational movement of the interlocking cam 32. ing. As shown in FIG. 11, the temporary release motion converting mechanism 8A includes a slider 81 housed in the housing 72 so as to be slidable in the front-rear direction, and a front-rear mechanism interposed between the slider 81 and the interlocking cam 32. and an interlocking shaft 82 . The slider 81 has both left and right ends engaged with guide steps 721 provided on the inner wall 72a of the housing 72 so that it can advance and retreat in the front-rear direction. ing. When the operation button 71 is pressed and moved upward, the inclined cam surface 81a is biased by the upper edge of the operation button 71 so that the slider 81 slides toward the interlocking cam 32. It's becoming As described above, the front-rear interlocking shaft 82 is interposed between the slider 81 and the interlocking shaft receiver 32c provided on the outer periphery of the interlocking cam 32, and the slider 81 is directed toward the interlocking cam 32. When it slides, the interlocking cam 32 is biased by the front-rear interlocking shaft 82 to rotate. A projection 81b is formed on the use edge x side of the slider 81 at the center in the left-right direction. is provided. An upper surface of the operation button 71 is formed with a groove 71a for avoiding interference with the projection 81b and the compression spring. In the present embodiment, the interlocking cam 32 is rotated by a motion different from the flap motion of the top plate 2 by the temporary release operation portion 7A and the temporary release motion conversion mechanism 8A, so that the casters 4 and 5 are rotated as described above. It is also possible to switch from the wheel locked state (N) to the wheel unlocked state (L).

The temporary release operation section 7B and the temporary release motion conversion mechanism 8B provided on the right side have bilaterally symmetric shapes with the temporary release operation section 7A and the temporary release motion conversion mechanism 8A provided on the left side described above. Identical or corresponding parts are denoted by the same reference numerals and description thereof is omitted.

In addition, in this embodiment, a curtain board is arranged under the top plate 2 and hangs down from the top plate 2 in the use posture (U) and abuts or approaches the leg support 12 in the flip-up posture (F). It is equipped with M. As shown in FIGS. 1 to 6, the curtain plate M is formed by mounting caps M2 made of a soft material such as resin on both left and right sides of a hollow curtain plate main body M1 made of sheet metal. It has a first mounting pedestal M3 in the vicinity of the upper edge of both ends and a second mounting pedestal M4 in the vicinity of the lower edge of both left and right ends. A tip portion 913 of the link stay 98 is pivotally attached to the first mounting seat M3, and a tip portion 993 of a second link stay 99 pivotally attached to the legs 1A and 1B is attached to the second It is pivotally attached to the mounting base M4. Also, as shown in FIG. 17, in the flip-up posture (F), the cap M2 of the curtain plate M is engaged with the non-usage end surface 12b and the outer surface 12a of the both leg supports 12 in close proximity to or in contact with each other. It has a mating engagement portion Ma.

The operation of this embodiment will now be described.

As with the conventional furniture T, the flap top plate-equipped furniture T has a use posture (U) in which the top plate 2 is substantially horizontal and the top plate 2 is raised by operating a lever-type flap operation operation part 630. The flip-up posture (F) can be selectively taken. When the top plate 2 is in the use posture (U), as shown in FIGS. It is held, and the first and second casters 4 and 5 are in the wheel lock state (L). In other words, the left and right legs 1A and 1B are maintained in the braking state. When the top plate 2 is flapped from this state, the lower surface 2a of the top plate 2 abuts the planar cam surface 32b of the interlocking cam 32 during the flapping operation. rotate about the axis as one body to reach the flip-up posture (F) shown in FIG. 15 . At this time, the interlocking cam 32 rotates counterclockwise in the figure together with the top plate 2, and the vertical interlocking shaft 33 rises accordingly. As a result, the caster-linked hinge 36 rotates about the hinge support shaft 30, and the drive pin 38 of the caster-linked hinge 36 rotates forward. When the drive pin 38 rotates forward, the movement of the drive pin 38 is transmitted to the caster interlocking member 13 via the cam receiver 39, and the caster interlocking member 13 moves to the most retracted position (retracted) while resisting the biasing force of the spring. B) slides to the most advanced position (Z). By this motion, the operating portions 46, 56 of the first and second casters 4, 5 move forward, and the locking bodies 45, 55 of the respective casters 4, 5 descend to switch to the wheel unlocked state (N). Accordingly, the legs 1A and 1B which have been in the braking state are automatically brought into the non-braking state by simply flipping up the top plate 2, and can be freely moved. When the tabletop 2 is returned from the flip-up posture (F) to the original use posture (U), the opposite motion to the above-described motion is carried out, and the legs 1A and 1B are put into the braking state again.

In such a state of use, when it is desired to temporarily release the braking state of the legs 1A and 1B without flipping up the top plate 2, the operation buttons 71 of the temporary release operation portions 7A and 7B provided on the top plate 2 are pressed. is pushed upward. Since this pressing operation can be performed simultaneously by gripping the use edge x or the side edge z of the top plate 2, the unlocking operation and the operation of gripping the edge of the top plate 2 and moving the entire top plate 2 can be performed continuously. It can be carried out. That is, when the operating button 71 is pressed upward, the upper edge of the operating button 71 comes into sliding contact with the inclined cam surface 81a of the slider 81, and the upward movement of the operating button 71 causes the slider 81 to slide in the y direction opposite to the use edge. converted. When the slider 81 slides in the direction opposite to the use edge y, this movement is transmitted to the outer circumference of the interlocking cam 32 through the front-rear interlocking shaft 82, and the interlocking cam 32 rotates counterclockwise in FIG. 14(b). move. As a result, although the top plate 2 is in the use posture (U), the rotation of the interlocking cam 32 causes the vertical interlocking shaft 33 to move upward, the caster interlocking member 13 to move forward, and the casters 4 and 5 to move forward. The wheel lock state (L) is switched to the wheel unlock state (N). Since this switched state is maintained while the operation button 71 is being pressed, the entire piece of furniture T with the flap top is temporarily moved while the operation button 71 is being pressed and the top 2 is held. It is possible to move to

In this embodiment, since the temporary release operation portions 7A and 7B are provided near the corners where the use edge x and the side edge z of the top plate 2 intersect, the operation can be performed from the use edge x side. The above-described operation can be performed without difficulty from the side edge z side. Moreover, in this embodiment, such temporary release operating portions 7A and 7B are provided on both left and right sides of the top plate 2, and the left and right interlocking cams 32 engaged with the front and rear interlocking shafts 82 are rotatable integrally. Since the interlocking drive shaft 31 is connected by the caster lock operation interlocking beam 93 as described above, the wheel lock state (L) can be temporarily released by operating either the left or right temporary release operation portion 7A or 7B. can be decommissioned.

As described above, in the present embodiment, the wheels 44 and 54 of the casters 4 and 5 can be switched between the locked state (L) and the unlocked state (N) by utilizing the flap motion of the top plate 2. In other words, By doing so, the legs 1A and 1B can be automatically switched between the braking state and the non-braking state, thus simplifying a series of operations. Therefore, it is possible to reduce the number of man-hours for installing and removing such furniture T with a flap top plate, and to reduce the burden on the operator. Moreover, the legs are braked/unbraked 1A, 1B by switching the wheels 44, 54 of the casters 4, 5 to the locked state (L) or the non-locked state (N). The switching operation can be performed with a relatively small force as compared with the switching between braking and non-braking by floating or landing on the surface. Therefore, it is possible to interlock the flapping operation with the braking/non-braking switching operation without adversely affecting the flapping operation of the top plate 2 .

In addition, in this embodiment, as shown in FIG. 18, when a table system is configured by arranging a plurality of tables T adjacent to each other in the lateral direction, the outer surfaces 12a of the adjacent leg supports 12 are in contact with each other. Since the two leg supports 12a appear as if they were a single pillar, the appearance of a plurality of tables T adjacent to each other in the lateral direction is reduced. Eliminate complexity. In addition, according to such a configuration, the inner dimension between the left and right leg supports 12 can be set as large as possible, which is useful for substantially enlarging the leg space.

The present invention is not limited to the above-described embodiments, and may be applied to a structure in which the flap motion of the top plate is mechanically transmitted to the casters via hydraulic pressure or the like to switch the locked state, or a sensor or the like is used to detect the movement of the top plate. It may be converted into an electric signal, and based on the electric signal, an actuator or the like may be operated to switch the lock state of the casters. However, as described above, if the motion interlocking means mechanically transmits the flap motion of the top plate to the operating portion, which is the operating portion of the caster, through the link mechanism, the mechanism can be simplified and the motion can be improved. Reliability can be improved.

Further, the present invention is not limited to one that allows the leg to temporarily release the braking state in the use posture. However, according to the configuration as described above, the legs can be released from the braking state in the use posture without returning to the flip-up posture. is possible, and convenience can be improved. In addition, if the operating portion for flap operation is of the general lever type and the operating portion for temporary release is of the button type as described above, the temporary release operation of the braking state and the flap operation can be performed. It is further preferable in that it is difficult to confuse with the operation for performing.

Furthermore, the present invention is not limited to what is called a flap table, and can be applied to furniture in general having a top plate capable of flapping between the use posture and the flip-up posture. When applying to a flap table, it is desirable to lock the wheels in the use posture as in the above-described embodiment, considering the actual use.

In addition, an arbitrary configuration may be adopted for the operation interlocking means for switching the caster between the wheel-locked state and the wheel-unlocked state using the flap motion of the top plate. However, according to the configuration according to the above-described embodiment, while making it easier to adjust the width of the operation stroke of the operation unit of the caster accompanying the flap operation of the top plate, the temporary release operation unit different from the flap operation of the top plate By making the interlocking cam rotatable also by the operation of , the caster can be brought into the wheel unlocked state even when the top plate is in the use posture. In addition, the interlocking cam contacts the lower surface of the top plate and rotates the interlocking cam together with the top plate by the required angle; a flap operation of the top plate and the interlocking cam; If it is provided with an arc-shaped cam surface for separating from the rotational movement of the caster, it is possible to easily adjust the width of the movement stroke of the operating portion of the caster.

In addition, various modifications may be made within the scope of the present invention.

T...Furniture with flap top plate 1A, 1B...Leg 2...Top plate 3A, 3B...Operation interlocking means 4, 5...Caster (L)...Wheel locked state (N)...Wheel unlocked state (U)...Using posture (F) … flip-up posture

Claims (5)

A leg having casters that can be selectively switched between a wheel-locked state and a wheel-unlocked state, a top plate supported by the leg and capable of flapping between a use posture and a flip-up posture, and a flap of the top plate. A piece of furniture with a flap top plate, comprising an operation interlocking means for switching the casters to the wheel-locked state or the wheel-unlocked state by using the motion. The motion interlocking means switches the casters to a wheel-locked state when the top plate is in the use posture, and switches the casters to a wheel-unlocked state when the top plate is in the flip-up posture. 2. The furniture with a flap top plate according to claim 1, wherein the flap top plate is a piece of furniture. The caster has an operating portion that receives an operating force, and is configured to selectively switch between the wheel-locked state and the wheel-unlocked state by operating the operating portion,
3. The piece of furniture with a flap top according to claim 1 or 2, wherein said motion interlocking means mechanically transmits relative motion of said top to said leg to said operating portion of said caster. The motion interlocking means has an interlocking cam that rotates by a required angle in accordance with the flapping operation of the top plate relative to the leg, and the caster is moved to the wheel-locked state or the wheel-unlocked state by the rotation of the interlocking cam. It is also possible to switch the caster from the wheel lock state to the wheel unlock state by rotating the interlocking cam by an operation different from the flap operation of the top plate. 4. Furniture with a flap top according to claim 3. A planar cam surface for the interlocking cam to contact the lower surface of the top plate and rotate the interlocking cam together with the top plate by the required angle, a flap operation of the top plate, and a rotation operation of the interlocking cam. 5. The piece of furniture with a flap top plate according to claim 4, further comprising an arcuate cam surface for separating the flap top plate.

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