JP2011103921A - Piece of furniture with top plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a piece of furniture with a top plate, configured in such a manner that a lifting and lowering synchronizing means for synchronously lifting and lowering both left and right sides of the top plate and a gas spring are compactly housed inside a leg and the leg is made light in weight. <P>SOLUTION: The lifting and lowering synchronizing means includes pulley members 13 and 43 for synchronization pivoted to a leg column 6 which can be lifted and lowered of internal and external leg columns 5 and 6, and a flexible wire member 14 for synchronization stretched over the pulley members 13 and 43 for synchronization. The wire member 14 for synchronization is connected to a vertically extending connecting member 11 fixed to the leg column 5 installed on the floor surface of the internal and external leg columns 5 and 6. In the internal leg column 6, a first housing part 48 for housing the gas spring 12 for assisting the lifting and lowering of a leg 3 and fixing a height position by being extended and contracted in the vertical direction, and a second housing part 49 for housing the connecting member 11 are provided separately from each other. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to furniture with a top plate that can change the height position by raising and lowering the top plate.

  For example, as disclosed in Patent Document 1, a conventional furniture with a top plate is a pair of left and right guide rods (external pedestals) and a lifting rod (internal pedestals) that can slide up and down along the guide rods. ), And a gas spring is provided on one leg so as to assist in raising and lowering the top plate and fixing the height position, and a plurality of pulleys (synchronous pulley members) An adjusting device (elevating / lowering synchronizing means) is constituted by the wire (synchronizing wire member) that is stretched around the pulley, and it is less likely to cause an elevating error of the left and right elevating rods. I try to lift it. Also, Patent Documents 2 and 3 disclose various similar synchronization means and expansion / contraction synchronization means (elevation synchronization means).

JP-A-10-179266 (page 3, FIG. 7) Japanese Patent No. 2761706 (page 3, FIG. 2) Japanese Patent No. 3681001 (page 4, FIG. 3)

  However, in the desk top height adjusting device (elevating and lowering synchronizing means) described in Patent Document 1, one end of a wire (synchronizing wire member) and a pulley (synchronizing pulley member) of the adjusting device are guided. It must be fixed to the heel (external pedestal), and in order to prevent these wires and pulleys from interfering with the gas spring, the wires and pulleys must be housed in the cover member provided on the side of the leg. Yes. Therefore, there is a problem that not only the width of the leg body including the cover member is increased, but also the weight is increased. Patent Documents 2 and 3 have the same problem.

  The present invention has been made paying attention to such problems, and it is possible to reduce the weight of the leg by compactly accommodating the elevating synchronization means for vertically moving the left and right sides of the top plate and the gas spring in the leg. It aims at providing the furniture with a top plate which can aim at.

In order to solve the above-mentioned problem, the furniture with a top plate of the present invention,
The pair of left and right legs that support the left and right sides of the top plate are configured to be able to expand and contract in the vertical direction by inserting and inserting the internal pedestal into the external pedestal, and the top plate can be expanded and contracted by extending both the legs. In the furniture with a top plate in which the height position can be changed by raising and lowering and provided with elevating synchronization means for synchronizing the expansion and contraction operations of the both legs,
The elevating / lowering synchronizing means has a synchronizing pulley member pivotally supported with respect to a pedestal that can be raised / lowered among the inner and outer pedestals, and has flexibility to be spanned over the synchronizing pulley member. A line member for synchronization, and the line member for synchronization is connected to a connecting member extending in a vertical direction fixed to a pedestal installed on the floor surface among the internal and external pedestals. And a first accommodating portion for accommodating a gas spring for assisting expansion and contraction of the leg body and fixing a height position by extending and contracting in the vertical direction, and a first accommodating portion for accommodating the connecting member. The two storage portions are provided so as to be separated from each other.
According to this feature, the gas spring accommodated in the first accommodating portion, the connecting member accommodated in the second accommodating portion, the synchronizing wire member connected to the connecting member, and the synchronizing wire member are spanned. The synchronization pillar member is operated without interfering with each other, and the pedestal installed on the floor surface is a pedestal of either the internal or external pedestal by the connecting member extending in the vertical direction. In addition, since the synchronizing wire member can be connected, and the first and second accommodating portions are formed in the inner pedestal, the elevating synchronization means and the gas for synchronously elevating the left and right sides of the top plate The spring can be accommodated in the leg body in a compact manner, and the weight of the leg body can be reduced.

The furniture with a top plate of the present invention,
The internal pedestal is provided with a third housing portion formed between the first housing portion and the second housing portion and formed narrower than the first and second housing portions, The third accommodating portion accommodates the synchronizing pulley member.
According to this feature, the gas spring housed in the first housing portion, the synchronizing pulley member housed in the third housing portion, and the synchronizing wire member spanned over the synchronizing pulley member interfere with each other. Since the third housing portion is formed narrow, the first housing portion and the second housing portion can be separated from each other by the third housing portion.

The furniture with a top plate of the present invention,
A concave line extending in the vertical direction is formed in a portion corresponding to the third accommodating portion on the outer surface of the internal pedestal, and a guide roller is provided in the concave line, and the guide roller is slidably contacted. For this purpose, a sliding contact surface extending in the vertical direction is formed inside the outer pedestal.
According to this feature, the guide roller disposed in the recess of the internal pedestal is slidably contacted with the internal sliding surface of the external pedestal, so that the leg can be smoothly expanded and contracted, and the width is narrowed. Using the portion provided with the formed third accommodating portion, the concave stripe can be formed in the inner pedestal, and the guide roller can be accommodated compactly between the inner pedestal and the outer pedestal.

The furniture with a top plate of the present invention,
In the recess, a pair of upper and lower guide rollers that have pivots that face the same direction and are independently rotated are provided, and each guide roller slides on the sliding contact surface disposed opposite to each other. It is characterized by being touched.
According to this feature, the pair of upper and lower guide rollers are disposed between the sliding contact surfaces extending in the vertical direction facing each other, and each guide roller is slidably contacted with each sliding contact surface, so that it can move up and down. The pedestal is now moved up and down without wobbling horizontally.

It is a perspective view which shows the table in Example 1. FIG. It is a front view which shows a table. It is a left view which shows a table. It is a perspective view which shows the wiring of a wire member, and arrangement | positioning of an operation part. It is an AA longitudinal cross-sectional view which shows the internal structure of the arm and leg body of the right side in FIG. It is a BB longitudinal cross-sectional view which shows the internal structure of the leg in FIG. It is CC cross-sectional view which shows the internal structure of the leg in FIG. It is the elements on larger scale of FIG. 5 which shows the upper part of a leg. (A) is a DD longitudinal cross-sectional view in FIG. 8, (b) is a longitudinal cross-sectional view which shows the state which a press member presses a gas spring. It is a perspective view which shows the lower end part of a raising / lowering rod. It is a conceptual diagram which shows the state which a guide roller slidably contacts with the sliding contact surface of a support rod. (A) is a top view which shows an operation part, (b) is a top view which shows the state by which the operation lever was pulled ahead. (A) is the EE longitudinal cross-sectional view of FIG. 12, (b) is a longitudinal cross-sectional view which shows the state by which the operation lever was pulled ahead. It is a conceptual diagram which shows the wire member for operation spanned over a pulley and a press member. It is a conceptual diagram which shows a raising / lowering synchronizing means. (A) is a top view which shows the operation part in Example 2, (b) is a top view which shows the state by which the operation lever was pulled ahead. (A) is FF longitudinal cross-sectional view of FIG. 15, (b) is a longitudinal cross-sectional view which shows the state by which the control lever was pulled ahead.

  EMBODIMENT OF THE INVENTION The form for implementing the furniture with a top plate which concerns on this invention is demonstrated below based on an Example.

  The furniture with a top plate according to the first embodiment will be described with reference to FIGS. Hereinafter, the lower right side of FIG. 1 and FIG. 4 is the front side (front side) of the table, and the upper right side of FIG. 1 and FIG. 4 is the right side of the table 1, FIG. 7, 8, 12, 13, 16, and 17 are described as the front side (front side) of the table and the lower side of FIG. 14 as the front side (front side) of the table.

  The code | symbol 1 of FIG. 1 is the table as furniture with a top plate to which this invention was applied. The table 1 has a single top plate 2 that is long on the left and right sides, and a pair of left and right legs 3 that support the left and right sides of the top plate 2. The position can be changed.

  As shown in FIGS. 2 and 3, the leg body 3 includes a base leg 4 that extends in the front-rear direction and is installed on the floor surface, and a support rod 5 (fixed pedestal column) that is erected from the center of the base leg 4. , External pedestals) and lifting rods 6 (movable pedestals, internal pedestals) fitted in the support rods 5 are provided. The upper part of the support rod 5 is opened, and the elevating rod 6 is fitted in the support rod 5 so as to be movable up and down.

  As shown in FIG. 4, an arm 7 extending in the front-rear direction is provided on the upper portion of the leg body 3, and this arm 7 is attached to the upper portion of the lifting / lowering rod 6. The left and right arms 7 are connected by two connecting rods 8 arranged in front and rear. The connecting rod 8 forms a prism and extends substantially linearly between the left and right legs 3. Furthermore, the top plate 2 is attached to the upper part of the arm 7 and the connecting rod 8, and the top plate 2 is raised and lowered together with the raising and lowering of the lifting rod 6.

  Moreover, the operation part 9 (operation means) operated when an operator raises / lowers the top plate 2 is attached to the center part in the lower surface of the top plate 2 (refer FIG. 2). The operation unit 9 is attached to the front plate 2 in the vicinity of the front end and the rear end of the table 2 so as to be spaced apart from each other, and the operator can use the table top from either the front side or the rear side of the table 1. 2 can be moved up and down (see FIG. 4).

  As will be described later, the operator lifts or lowers the top plate 2 while maintaining the state in which the operation lever 10 provided in the operation unit 9 is moved horizontally in the direction away from the top plate 2. The height position of the top plate 2 can be freely changed.

  Next, the internal structure of the left and right legs 3 will be described. Since the insides of both legs 3 have substantially the same configuration with the front and rear being reversed, the right leg 3 will be described as an example. FIG. 5 is a cross-sectional view taken along line AA in FIG. 4, and is a longitudinal side view seen from the inside of the table 1.

  As shown in FIG. 5, a connecting member 11 fixed to the base leg 4 extends in the vertical direction on the front side (right side in the drawing) inside the lifting rod 6, and the rear side inside the lifting rod 6. A gas spring 12 that can expand and contract in the vertical direction is provided on the left side of the drawing. The gas spring 12 has a lower end fixed to the base leg 4 and an upper end fixed to the lower surface of the arm 7.

  Further, a pulley member 13 (synchronization pulley member) and a synchronization wire member 14 (synchronization line member) are provided between the connecting member 11 and the gas spring 12 to constitute an elevating synchronization means described later. The pulley member 13 is rotated around a pivot 61 extending in the left-right direction, and can be moved up and down by the synchronizing wire member 14.

  Next, the gas spring 12 will be described with reference to FIGS. As shown in FIG. 5, the gas spring 12 includes a cylinder 15 in which gas is sealed, and a piston rod 16 that is disposed inside the cylinder 15 and that is taken in and out of the cylinder 15. Thus, the gas spring 12 is expanded and contracted in the vertical direction, so that the vertical length of the gas spring 12 can be changed to an arbitrary length.

  As shown in FIG. 8, the piston rod 16 operates when the push rod 17 provided at the upper end of the gas spring 12 is pressed, and the vertical length of the gas spring 12 can be arbitrarily changed. . Further, a nut 18 attached to a position below the arm 7 in the piston rod 16 is fixed to the lower surface of the arm 7.

  In addition, as the vertical length of the gas spring 12 changes, the elevating rod 6 is moved up and down, and the height position of the elevating rod 6 is fixed as the vertical length of the gas spring 12 is fixed. A state where the push rod 17 is pressed and the piston rod 16 can be expanded and contracted is an expanded state, and a state where the push rod 17 is released and the piston rod 16 is locked (fixed) is a fixed state.

  Next, switching means for switching the gas spring 12 between the expanded state and the fixed state will be described with reference to FIGS. FIG. 9A is a cross-sectional view taken along the line DD of FIG. 8 and is a longitudinal rear view of the leg 3 as viewed from the rear side of the table 1.

  As shown in FIG. 8 and FIG. 9A, a pressing member 19 (switching means, operating member) for pressing the push rod 17 (operating part) of the gas spring 12 is provided inside the arm 7. Yes.

  The pressing member 19 is pivotally supported by a pivoting member 20 attached to the arm 7 so that the pressing member 19 is swung in the vertical direction about a pivoting shaft 21 extending in the front-rear direction at the lower part thereof. It has become.

  As shown in FIG. 9A, the pressing member 19 has a wire engaging portion 23 to which an upper end portion of the pressing member 19 is engaged with an operation wire member 22 for swinging the pressing member 19. A pressing portion 24 that presses the push rod 17 is formed at a portion corresponding to the gas spring 12 at the lower end portion of 19.

  The operation wire member 22 includes an operation wire 25 (operation line member, switching synchronization means) and a resin tube member 26. The operation wire 25 is inserted into the tube member 26, and the tube member. 26 can slide in the extending direction. The operation wire member 22 is fixed to the arm 7 by a fixing portion 27 formed at the end of the tube member 26.

  Further, in the table 1 in this embodiment, two operation wire members 22 are provided on the front and rear sides. The pressing members 19 are provided on the left and right arms 7, respectively, and one operation wire member 22 connects the pressing members 19 to each other (see FIGS. 4 and 14). The front and rear operation wire members 22 are connected to the same pressing member 19, and the front and rear operation wire members 22 are arranged so as to be substantially parallel in the vicinity of the pressing member 19.

  Further, the operation wire 25 is provided longer than the length of the tube member 26, and the operation wire 25 is exposed at the end of the operation wire member 22. The distal end of the operation wire 25 is fastened with an engagement fitting 28, and the engagement fitting 28 is engaged with the wire engagement portion 23 of the pressing member 19. In addition, the wire engaging part 23 is formed in the front side and back side of the press member 19, and the front and rear operation wires 25 and 25 are engaged with the front and rear wire engaging parts 23, respectively (see FIG. 8). ). Furthermore, in the pressing member 19, the front and rear wire engaging portions 23 (connection points) are provided apart from each other in the front and rear directions, that is, between the front and rear wire engaging portions 23, that is, two operation wire members. A pulley member 43 to be described later can be disposed between the two.

  As shown in FIG. 9B, when the operation wire 25 is pulled inward, the pressing member 19 swings and the pressing portion 24 descends. Then, the push rod 17 of the gas spring 12 is pressed, and the piston rod 16 is expanded and contracted.

  When the gas spring 12 is expanded and contracted, the piston rod 16 is raised by the urging force of the gas inside the gas spring 12, and the arm 7 and the top plate 2 are pushed up. However, the operator can easily raise the top plate 2.

  When the pulling state of the operation wire 25 is released, the pressing portion 24 is pushed up by the push rod 17 and the pressing member 19 swings and returns. And it will be in the fixed state where the piston rod 16 was locked. In this way, the expansion / contraction state and the fixed state can be switched. In addition, you may provide urging means, such as a spring, in the site | part of the pivot shaft 21 of the pivot member 20 so that the press member 19 may return easily.

  Next, the operation unit 9 will be described with reference to FIGS. Since the operation units 9 provided at two places on the front and rear of the top plate 2 have the same configuration, the operation unit 9 provided on the front side will be described as an example. As shown in FIG. 12A, the operation unit 9 is provided with a fixing member 29 that is fixed to the top plate 2 and a moving member 30 that is movable in the horizontal direction. In addition, an operation lever 10 for the operator to move the moving member 30 is provided on the front side of the moving member 30.

  The fixing member 29 has a rectangular shape in plan view, and its four corners are screwed to the top plate 2. At the rear end portion of the fixing member 29, two holding portions 31 for holding the operation wire member 22 are formed on the left and right. Further, the moving member 30 combined above the fixed member 29 is formed such that the left-right width of the front part is smaller than that of the rear part.

  Further, two long holes 32 extending in the front-rear direction are formed in the front portion and the rear portion of the moving member 30. When the bolt 33 inserted from above the long hole 32 is fixed to the fixing member 29 and the moving member 30 is in the normal position shown in FIG. 12A, the bolt 33 is placed at the front end of the long hole 32. positioned.

  In addition, a pulley arrangement portion 34 having a substantially semicircular shape is formed at the rear portion of the moving member 30. A pulley 35 (moving member, switching synchronization means, operation pulley member) to which the substantially central portion of the operation wire member 22 is engaged is attached to the pulley arrangement portion 34.

  As shown in FIG. 13A, a hole 36 formed in the pulley arrangement portion 34 of the moving member 30, a center hole 37 of the pulley 35, and a hole of the pulley pivoting member 38 attached to the moving member 30. 39 are formed at portions corresponding to each other. The pulley 35 is rotatable about a pivot 62 extending in the vertical direction between the pulley pivot member 38 and the pulley arrangement portion 34.

  The holding portion 31 of the fixing member 29 holds the fixing portion 40 provided at the end of the tube member 26 of the operation wire member 22, and the operation wire 25 exposed from the fixing portion 40 is attached to the pulley 35. Is engaged. A circumferential surface on the front side of the pulley 35 serves as a contact surface 41 on which the operation wire 25 at a substantially central portion of the operation wire member 22 is slid.

  Further, the vicinity of the portion engaged with the pulley 35 in the operation wire member 22 is held by the holding portion 31, so that the state where the operation wire 25 is stretched over the pulley 35 is maintained, and the operation wire 25 can be prevented from being detached from the pulley 35.

  As shown in FIGS. 12B and 13B, when the operation lever 10 is pulled forward and the moving member 30 is moved to the front position, the operation wire 25 slides in the tube member 26. Thus, the operation wire 25 engaged with the pulley 35 is pulled forward.

  Next, the movement when the operation unit 9 is operated will be described with reference to the conceptual diagram of FIG. The pressing members 19 of the left and right legs 3 are connected by an operation wire member 22, and the operation portion 9 is provided at a substantially central portion on the front and rear end sides of the top plate 2. Is substantially slid by the contact surface 41 of the pulley 35 of the operation unit 9 and pulled.

  Therefore, even if there is an error in the length of the operation wire member 22 from the moving member 30 to the left and right pressing members 19, the error is caused by the operation wire member 22 sliding on the contact surface 41 as the pulley 35 rotates. To be absorbed. Further, the operation wire member 22 can be separated from the contact surface 41 of the pulley 35. That is, the operation wire member 22 can move relative to the pulley 35 and the moving member 30.

  When the operator pulls the front operation lever 10 forward, the operation wire 25 engaged with the pulley 35 is pulled forward, and the left and right ends of the operation wire 25 move inward. Is done. Then, the pressing members 19 in the left and right legs 3 are simultaneously operated, so that the gas spring 12 can be switched between an expanded state and a fixed state simultaneously (see FIG. 9).

  Next, the elevating / lowering synchronizing means for synchronizing the expansion / contraction operations of the left and right legs 3 will be described with reference to FIGS. 5 to 8 and 15. In the table 1 in the present embodiment, an elevating synchronization means for synchronizing the vertical movement of the elevating rod 6 is provided. 6 is a cross-sectional view taken along the line B-B in FIG. 5, and is a longitudinal rear view of the right leg 3 viewed from the rear side of the table 1.

  The lifting / lowering rods 6 arranged on the left and right by the lifting / lowering synchronizing means can move in the vertical direction at the same moving distance. Therefore, when changing the height position of the top plate 2, the horizontal state of the top plate 2 is maintained.

  As shown in FIGS. 5 and 6, the pulley member 13 provided between the gas spring 12 and the connecting rod 8 in the lifting rod 6 is rotated around a pivot 61 extending in the left-right direction, and is used for synchronization. The wire member 14 can move up and down.

  Further, inside the arm 7, there is provided a pulley member 43 (synchronous pulley member) having two pulleys 42 and 42 'connected to the front and rear. The pulley member 43 has a pivot 63 extending in the front-rear direction. The front pulley 42 and the rear pulley 42 'rotate independently of each other.

  A U-shaped bracket 44 is provided on the outer side of the pulley member 43 in a side view (see FIG. 8), and the pulley member 43 is screwed to the arm 7 via the bracket 44 (FIG. 6). reference). Moreover, the pulley member 43 is arrange | positioned inside the press member 19, and even if the press member 19 rock | fluctuates, the press member 19 does not collide with the pulley member 43 (refer FIG. 9).

  The synchronizing wire member 14 is engaged with the pulley members 13 and 43, and is spanned below the left and right legs 3 and the top plate 2. As shown in FIG. 8, a connection fitting 45 is provided in the vicinity of the connection member 11 in the synchronization wire member 14, and the synchronization wire member 14 is connected to the upper end portion of the connection member 11 via the connection fitting 45. It is connected to.

  Further, as shown in FIG. 5, the connecting member 11 is provided with a stopper 46 at a substantially intermediate portion. A stopper contact member 47 is provided on the lower surface of the lift rod 6, and the lift of the lift rod 6 is stopped at a position where the stopper contact member 47 is in contact with the stopper 46. (See FIG. 10).

  Further, the synchronization wire member 14 is stretched in a U-shape from the front pulley 42 of the pulley member 43 through the pulley member 13 toward the rear pulley 42 ′. The synchronization wire member 14 extending from the pulley member 43 of the right arm 7 extends toward the left arm 7 and is bridged between the left arm 7 and the leg 3, and the synchronization wire member 14 is integrally formed. Has been.

  The movement when the top plate 2 is raised and lowered will be described with reference to the conceptual diagram of FIG. The elevating / lowering synchronizing means includes pulley members 13 and 43 and a synchronizing wire member 14 connected to the connecting member 11. As described above, the pulley members 13 and 43 are pivotally supported with respect to the lifting rod 6 and are lifted and lowered together with the lifting rod 6.

  As shown in FIG. 15, of the upper pulleys 42 and 42 ', the synchronizing wire member 14 spanned on one pulley 42 is defined as a synchronizing wire member 14a, and the synchronizing wire member 14a spans on the other pulley 42'. The wire member 14 will be described as a synchronization wire member 14b.

  For example, when the lift 6 on the right side of the paper rises, the right pulley member 43 rises. However, since the synchronization wire member 14a is fixed to the connection fitting 11 via the connection fitting 45, the right pulley. By pulling up 42, the left pulley member 13 is interlocked by the synchronizing wire member 14 a and is raised by the same distance as the moving distance of the right pulley 42.

  Similarly, when the elevating rod 6 on the left side of the paper rises, the left pulley member 43 rises. However, since the synchronization wire member 14b is fixed to the connection fitting 11 via the connection fitting 45, By pulling up the pulley 42 ', the right pulley member 13 is interlocked by the synchronizing wire member 14b, and the left pulley 42' is raised by the same distance as the moving distance.

  In this way, the action of the synchronizing wire member 14a and the action of the synchronizing wire member 14b work simultaneously and affect each other, so that only one of the left and right elevating rods 6 and 6 does not advance in advance. . In other words, the right and left elevating rods 6 and 6 are reliably raised in synchronism.

  Further, even when the left and right elevating rods 6 and 6 are lowered, the left elevating rod 6 and the right elevating rod 6 act so as to be simultaneously lowered by the same movement distance. In this way, the left and right lifting rods 6 and 6 and the top plate 2 can be lifted and lowered integrally in order to synchronize the expansion and contraction of the left and right lifting rods 6 and 6.

  In other words, the elevating / lowering synchronization means synchronizes the expansion and contraction operations of both legs 3, and when changing the height position of the top plate 2, the height of the top plate 2 does not deviate from the left and right. The state is maintained and the vehicle is moved up and down.

  Next, the arrangement of the gas spring 12, the connecting member 11, and the pulley member 13 in the leg 3 will be described with reference to FIGS. In the following description, the right side of FIG.

  As shown in FIG. 7, the elevating rod 6 fitted in the support rod 5 is formed with a first accommodating portion 48 in which the gas spring 12 is accommodated on the rear side, and the connecting member 11 is accommodated on the front side. A second accommodating portion 49 is formed. Furthermore, a third housing portion 50 in which the pulley member 13 is housed is formed between the first housing portion 48 and the second housing portion 49.

  As described above, the gas spring 12 accommodated in the first accommodating portion 48, the pulley member 13 and the synchronizing wire member accommodated in the third accommodating portion 50 are operated without interfering with each other. Yes.

  Further, the third housing part 50 is formed to be narrower in the left-right width than the first and second housing parts 48, 49, and the portion corresponding to the third housing part on the outer surface of the lifting / lowering rod 6 is vertically A concave line 51 extending in the direction is formed.

  As shown in FIG. 7, a plurality of guide rollers 52 that rotate about a pivot 64 extending in the left-right direction are attached to the front and rear outer surfaces of the elevating rod 6 and the four surfaces of the left and right recesses 51. The pair of upper and lower guide rollers 52 and 52 are independently rotated, and the pair of upper and lower guide rollers 52 and 52 constitute a pair of roller portions 53.

  As shown in FIG. 10, the guide rollers 52 and 52 of the roller unit 53 are arranged slightly shifted in the horizontal direction. In this embodiment, the rollers are provided at two upper and lower positions on the front and rear and left and right surfaces of the lifting / lowering rod 6. A portion 53 is provided (see FIGS. 5 and 6).

  As shown in FIG. 7, a groove 54 is formed in a portion of the support rod 5 corresponding to the guide roller 52, and the surface facing the groove 54 is a slidable contact surface on which the guide roller 52 is slidably contacted. 55. The pair of upper and lower guide rollers 52, 52 are in sliding contact with one sliding contact surface 55 and the other sliding contact surface 55, respectively.

  As shown in the conceptual diagram of FIG. 11, the guide roller 52 on the right side of the paper surface is in sliding contact with the right sliding surface 55, and the guide roller 52 on the left side of the paper surface is in sliding contact with the left sliding surface 55. Therefore, the lifting / lowering rod 6 is lifted and lowered without wobbling in the horizontal direction.

  When the elevating rod 6 is raised, the right guide roller 52 is rotated in the clockwise direction, and the left guide roller 52 is rotated in the counterclockwise direction. Therefore, the raising / lowering operation | movement of the raising / lowering rod 6 is performed smoothly.

  When the elevating rod 6 is lowered, the right guide roller 52 is rotated counterclockwise, and the left guide roller 52 is rotated clockwise (not shown).

  Further, the recess 51 is formed by using the portion where the third housing portion 50 of the lifting rod 6 is provided, and the guide roller 52 can be compactly accommodated between the lifting rod 6 and the support rod 5. It can be done.

  Next, an operation in which the operator operates the operation unit 9 to raise and lower the top plate 2 will be described. When the operator pulls the operation lever 10 of the operation unit 9 forward and the moving member 30 is moved to the front position, the substantially central portion of the operation wire 25 engaged with the pulley 35 is moved forward (FIG. 12 ( b)), both ends of the operation wire member 22 are evenly moved to the center side (see FIG. 14).

  The left and right pressing members 19, 19 with which the operating wire 25 at the end of the operating wire member 22 engages are swung, the pressing portion 24 is lowered, and the push rod 17 of the gas spring 12 is simultaneously pressed (see FIG. 9 (b)). Then, the left and right gas springs 12 and 12 are simultaneously expanded and contracted, and the top plate 2 can be moved up and down.

  Thus, since the left and right gas springs 12 and 12 are simultaneously switched to the expanded and contracted state, the switching of one of the gas springs 12 occurs first, and the top plate 2 is caused by imbalance of the urging forces of the gas springs 12 and 12. Can be prevented from tilting.

  When the operator raises the top plate 2, the top plate 2 is raised by pushing the top plate 2 upward while the gas spring 12 is in an expanded / contracted state, that is, with the operation lever 10 being pulled. At this time, since the upward force acts on the piston rod 16 by the gas inside the gas spring 12, even the top plate 2 having a weight can be easily moved up and down.

  Moreover, since the raising / lowering synchronizing means comprised by the pulley members 13 and 43 and the wire member 14 for a synchronization is provided, the height position of the top plate 2 does not shift | deviate from right to left. Furthermore, since the operation part 9 is provided in the approximate center part of the top plate 2, the force which an operator applies to the top plate 2 is added equally with respect to a right-and-left leg.

  When the top plate 2 is moved to an arbitrary position and the operator releases the operating lever 10 to return the moving member 30 to the normal position, the substantially central portion of the operation wire 25 that engages with the pulley 35 is moved backward. The end of the operation wire member 22 is evenly moved outward.

  Further, the left and right pressing members 19, 19 with which the operating wire 25 at the end of the operating wire member 22 engages swings, the pressing portion 24 rises, and the pressing of the push rod 17 of the gas spring 12 is simultaneously released. Is done. Then, the left and right gas springs 12, 12 are simultaneously fixed, and the position of the top plate 2 is fixed.

  When the operator lowers the top plate 2, the top plate 2 is lowered by pushing down the top plate 2 while the gas spring 12 is in an expanded / contracted state, that is, with the operation lever 10 being pulled.

  When the top plate 2 is moved to an arbitrary position, the operator releases the operation lever 10 and the moving member 30 is returned to the normal position, the operation wire 25 engaged with the pulley 35 is moved rearward, and the operation is performed. The end portion of the wire member 22 is simultaneously moved outward.

  The left and right pressing members 19, 19 are simultaneously swung to raise the pressing portion 24, and the pressing of the push rod 17 of the gas spring 12 is simultaneously released. Then, the left and right gas springs 12, 12 are simultaneously fixed, and the position of the top plate 2 is fixed.

  As described above, in the table 1 according to the present embodiment, the elevating / lowering synchronizing means for synchronizing the expansion / contraction operation of the both legs 3 is a pulley member pivotally supported by the elevating / lowering rod 6 that can be raised / lowered among the internal and external pedestals. 13 and 43, and a flexible synchronizing wire member 14 that is stretched over the pulley members 13 and 43. The synchronizing wire member 14 is installed on the floor surface of the internal and external pedestals. It is connected to a connecting member 11 that is fixed to the support rod 5 extending in the vertical direction, and the lifting rod 6 is expanded and contracted in the vertical direction to assist expansion and contraction of the leg 3 and to fix the height position. The first accommodating portion 48 that accommodates the gas spring 12 that performs the above and the second accommodating portion 49 that accommodates the connecting member 11 are provided apart from each other, so that the gas spring 12 accommodated in the first accommodating portion 48 is provided. And in the second accommodating part 49 The accommodated connecting member 11, the synchronizing wire member 14 connected to the connecting member 11, and the pulley members 13 and 43 spanning the synchronizing wire member 14 are operated without interference with each other. The connecting member 11 extending in the vertical direction enables the synchronization wire member 14 to be connected regardless of whether the support rod 5 is an internal or external pedestal, and the first and second Since the accommodating parts 48 and 49 are formed in the elevating rod 6, the elevating synchronization means for moving the left and right sides of the top plate up and down synchronously and the gas spring 12 are accommodated in the leg body 3 in a compact manner. Weight reduction can be achieved.

  Further, the elevating rod 6 has a third housing portion 50 formed between the first housing portion 48 and the second housing portion 49 and formed narrower than the first and second housing portions 48 and 49. In the third housing portion 50, the pulley member 13 is housed, whereby the gas spring 12 housed in the first housing portion 48, the pulley member 13 housed in the third housing portion 50, and the pulley. The synchronization wire member 14 spanned over the member 13 can be operated without interfering with each other, and the third housing portion 50 is formed with a narrow width. The accommodating part 48 and the second accommodating part 49 can be separated from each other.

  In addition, a concave strip 51 extending in the vertical direction is formed at a portion corresponding to the third housing portion 50 on the outer surface of the lifting rod 6, and a guide roller 52 is provided in the concave strip 51, and the guide roller 52 is slid. A sliding contact surface 55 extending in the vertical direction for contact is formed inside the support rod 5, so that the guide roller 52 disposed in the concave strip 51 of the lifting rod 6 can slide inside the support rod 5. The sliding movement of the leg 3 is smoothed by the sliding contact with the 55, and the recess 51 is formed on the lifting rod 6 using the portion provided with the narrow third accommodating portion 50. The guide roller 52 can be compactly accommodated between the elevating rod 6 and the supporting rod 5.

  Further, a pair of upper and lower roller portions 53 having a pivot 64 that faces in the same direction and being independently rotated are provided in the concave strip 51, and a sliding contact surface 55 in which the guide rollers 52 are arranged to face each other. The pair of upper and lower roller portions 53 are disposed between the slidable contact surfaces 55 extending in the vertical direction so as to face each other, and each guide roller 52 is slidably contacted with each slidable contact surface 55. As a result, the pedestal that can be moved up and down can be moved up and down without wobbling in the horizontal direction.

  Next, the furniture with a top plate according to the second embodiment will be described with reference to FIGS. 16 and 17. FIGS. 16 and 17 are diagrams showing the operation unit 9 ′ according to the second embodiment. Since the configuration other than the operation unit 9 ′ is the same as that of the first embodiment, a duplicate description is omitted.

  As shown in FIGS. 16 and 17, the operation unit 9 ′ is provided with a fixing member 29 ′ fixed to the top plate 2 and a moving member 30 ′ movable in the horizontal direction. On the front side, an operation lever 10 ′ is provided for the operator to move the moving member 30 ′.

  A fixing member 29 ′ having a rectangular shape in plan view is screwed to the top plate 2, and a moving member 30 ′ is disposed above the fixing member 29 ′. As in the first embodiment, the front part of the moving member 30 'is formed with a long hole 32' extending forward and backward, and a bolt 33 'inserted from above the long hole 32' is fixed to the fixing member 29 '. In the rear portion, the operation wire 25 is engaged with a pulley 35 provided on the moving member 30 ′, and the moving member 30 ′ is moved forward by the operation of the operation lever 10 ′.

  As shown in FIG. 17A, the front portion of the operation lever 10 'is a plate-like plate portion 56, and the rear portion is provided with a pulling portion 57 that pulls the moving member 30'. The pulling portion 57 has a substantially triangular shape in a side view, and an upper lever pivot portion 58 is pivotally supported by a lever mounting portion 59 provided on the lower surface of the top plate 2.

  A pivot shaft 60 is provided at the lower portion of the pulling portion 57, and is pivotally supported by the rear portion of the moving member 30 '. When the moving member 30 ′ is in the normal position shown in FIG. 17A, the end of the plate portion 56 of the operation lever 10 ′ faces downward.

  As shown in FIG. 17B, when the operator pulls the plate portion 56 of the operation lever 10 ′ upward, the operation lever 10 ′ swings around the lever pivot 58 and the pivot shaft 60 moves forward. The moving member 30 ′ moves to the front position.

  Then, the substantially central portion of the operation wire member 22 engaged with the pulley 35 is moved in the front direction, and as described above, the left and right pressing members 19 and 19 connected by the operation wire member 22 are simultaneously operated, The left and right gas springs 12, 12 are switched to the expanded / contracted state.

  Further, when the operator releases his / her hand from the operation lever 10 ′ and the moving member 30 ′ is returned to the normal position, the operation wire 25 engaged with the pulley 35 is moved rearward, and the end of the operation wire member 22 is moved. Are evenly moved outward, and the gas spring 12 is switched to the fixed state.

  In the operation unit 9 ′ in the second embodiment, since the swinging direction of the operation lever 10 ′ and the direction in which the top plate 2 is lifted are the same, the operator operates the operation lever 10 ′ to operate the top plate 2 When the height of the top plate 2 is adjusted, the top plate 2 can be lifted as it is by grasping the edge of the top plate 2 together with the operation lever 10 ′, and the height of the top plate 2 can be easily adjusted.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, in the above-described embodiment, the table is described as an example of the furniture with a top plate to which the present invention is applied. Even so, the present invention can be applied.

  Moreover, in the said Example, although the operation part 9 is provided in the front-and-back side of the top plate 2 of the table 1, and two places before and behind, the operation part 9 may be provided in either one front and back. Good.

  Moreover, in the said Example, although the raising / lowering rod 6 raised / lowered with respect to the supporting rod 5 installed in a floor surface is fitted, while using the raising / lowering rod 6 as an external pedestal, the supporting rod 5 is used as an internal leg. It is good also as a structure by which the support rod 5 is fitted by the raising / lowering rod 6 as a pillar.

1 Table (furniture with a top plate)
2 Top plate 3 Leg 5 Support rod (fixed pedestal, external pedestal)
6 Lifting rod (movable pedestal, internal pedestal)
9, 9 'operation part (operation means)
11 connecting member 12 gas spring 13 pulley member (synchronous pulley member)
14 Wire member for synchronization (wire member for synchronization)
17 Push rod (actuating part)
19 Pressing member (switching means, actuating member)
25 Operation wires (operation wire members, switching synchronization means)
30, 30 'moving member 31 holding part 35 pulley (moving member, switching synchronization means, pulley block for operation)
41 Contact surface 42, 42 'pulley 43 pulley member (synchronous pulley member)
48 1st accommodating part 49 2nd accommodating part 50 3rd accommodating part 51 Groove 52 Guide roller 55 Sliding contact surface 64 Axis

Claims (4)

The pair of left and right legs that support the left and right sides of the top plate are configured to be able to expand and contract in the vertical direction by inserting and inserting the internal pedestal into the external pedestal, and the top plate can be expanded and contracted by extending both the legs. In the furniture with a top plate in which the height position can be changed by raising and lowering and provided with elevating synchronization means for synchronizing the expansion and contraction operations of the both legs,
The elevating / lowering synchronizing means has a synchronizing pulley member pivotally supported with respect to a pedestal that can be raised / lowered among the inner and outer pedestals, and has flexibility to be spanned over the synchronizing pulley member. A line member for synchronization, and the line member for synchronization is connected to a connecting member extending in a vertical direction fixed to a pedestal installed on the floor surface among the internal and external pedestals. And a first accommodating portion for accommodating a gas spring for assisting expansion and contraction of the leg body and fixing a height position by extending and contracting in the vertical direction, and a first accommodating portion for accommodating the connecting member. The furniture with a top plate, wherein the two housing parts are provided apart from each other.   The internal pedestal is provided with a third housing portion formed between the first housing portion and the second housing portion and formed narrower than the first and second housing portions, The furniture with a top plate according to claim 1, wherein the synchronizing pulley member is accommodated in the third accommodating portion.   A concave line extending in the vertical direction is formed in a portion corresponding to the third accommodating portion on the outer surface of the internal pedestal, and a guide roller is provided in the concave line, and the guide roller is slidably contacted. The furniture with a top plate according to claim 2, wherein a sliding contact surface extending in a vertical direction is formed inside the external pedestal.   In the recess, a pair of upper and lower guide rollers that have pivots that face the same direction and are independently rotated are provided, and each guide roller slides on the sliding contact surface disposed opposite to each other. The furniture with a top plate according to claim 3, wherein the furniture is touched.

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