JP2009233079A - Foldable and liftable table - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foldable and liftable table having a top board turnable between a use position and a folded position and changeable in height, which prevents lifting and lowering of the top board while the top board is turned. <P>SOLUTION: The table is configured such that the top board 2 is supported by leg bodies 3 so as to be turned between the use position at which the top board 2 is substantially horizontally positioned and the folded position at which the top board 2 is substantially vertically raised, the leg body 3 is internally provided with a lifting section 15 for adjusting the height position of the top board 2, the top part of the leg body 3 is provided with an operation portion 18 to be pressed for operating the lifting section 15, the top board 2 is provided with pressing members 32 for pressing the operation portions 18 by operating a lifting member, and when the top board 2 is turned from the use position, the pressing member 32 is separated from the operation portion 18 so as not to press the operation portion 18. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  In the present invention, the top plate can be rotated between the use position where the top plate is substantially horizontal and the folding position where the top plate stands up substantially vertically, and the height of the top plate is reduced. The present invention relates to a folding lift table that can be changed.

  Conventionally, the top plate can be rotated and used between a horizontal state where the top surface of the top plate is substantially horizontal (use position) and a vertical state where the top surface of the top plate is substantially vertical (folding position). There are tables that allow the height of the top plate to be changed in consideration of the height and sitting height of the person (for example, see Patent Documents 1 and 2).

JP 2003-144233 A (3rd page, FIG. 2) Japanese Patent Laying-Open No. 2006-305219 (page 6, FIG. 19)

  However, in the tables described in Patent Documents 1 and 2, the mechanism for rotating the top plate and the mechanism for raising and lowering the top plate operate independently of each other. There is a possibility that the top plate is moved up and down due to an erroneous operation during the movement.

  This invention was made paying attention to such a problem, and the top plate can be rotated between the use position and the folding position, and the folding type that can change the height of the top plate. An object of the present invention is to provide a foldable lift table that can prevent the top plate from going up and down while the top plate is being rotated.

In order to solve the above-described problem, a folding lift table according to claim 1 of the present invention is provided.
A top plate is supported on the leg so as to be rotatable between a use position where the top plate is substantially horizontal and a folding position where the top plate stands up in a substantially vertical position. Elevating means for adjusting the position is provided inside each leg, and an operating part for operating the elevating means by being pressed is provided on the upper part of the leg, and the elevating operation member is operated. Thus, when a pressing member that presses the operating portion is provided on the top plate side and the top plate rotates from the use position, the pressing member is separated from the operating portion and cannot press the operating portion. It is characterized by.
According to this feature, when the top plate is rotated from the use position, as the top plate is rotated, the pressing member is separated from the operating unit and cannot press the operating unit, and the lifting and lowering unit cannot be operated. Therefore, the elevating means can be operated only when it is in the use position to raise and lower the top plate, and when the top plate is in the folded position or while the top plate is being rotated, the user's It is possible to prevent the top board from being lifted and lowered by mistake.

The foldable lift table according to claim 2 of the present invention is the foldable lift table according to claim 1,
An engagement claw portion formed by projecting from an engagement member slidably provided on the top plate side, and an engaged portion formed on a receiving member provided on an upper portion of the leg. A space is formed between the engaged portions of the receiving member by forming a locking means that can be fixed to the top plate so that the top plate cannot be rotated at the use position or the folding position by being engaged with each other. The operating portion and the pressing member are arranged in the portion.
According to this feature, since the engaging claw portion protrudes from the engaging member, the dimension of the space portion of the receiving member in which the operating portion and the pressing member are arranged can be secured, and the engaging member and the receiving member can be secured. Thus, the locking means, the actuating portion and the pressing member can be arranged in a compact manner.

The foldable lift table according to claim 3 of the present invention is the foldable lift table according to claim 2,
On the lower surface of the top plate, a support bracket having a substantially U-shape that is open on the receiving member side and externally fits the receiving member is fixed, and the support bracket is pivotally supported by a pivot provided on the receiving member. Thus, the top plate is supported, and the engagement member is slidably provided along the support bracket on the back surface of the support bracket.
According to this feature, when the engagement member is covered by the support bracket, the sliding movement of the engagement member is smoothly guided along the support bracket, and the support bracket is in the use position. Thus, the receiving member can be concealed.

The foldable lift table according to claim 4 of the present invention is the foldable lift table according to claim 3,
The engaged portion is provided at a front-rear position of the receiving member, the pivot is provided in front of the engaged portion on the rear side, and the top plate is provided on the inner surface of the support bracket. When in the use position, the pressing member is attached to the front side of the pivot and the rear side of the engaged portion on the front side.
According to this feature, the pressing member can be disposed so as not to interfere with the pivot member, the front and rear engaged portions, and the engaging member disposed on the back surface of the support bracket.

The foldable lift table according to claim 5 of the present invention is the foldable lift table according to claim 4,
The pressing member includes a fixing portion fixed to an inner surface of the support bracket, and a rotating portion having a pressing surface that is pivotally supported by the fixing portion and presses the operating portion. The rotating part is arranged so as to form an approximately L shape, and the engaging member is slid on the side of the fixed part.
According to this feature, the fixed portion, the rotating portion, and the engaging member can be compactly arranged in the support bracket, and the operations of each other can be prevented from interfering with each other.

  The best mode for carrying out the folding lift table according to the present invention will be described below based on the embodiments.

  An embodiment of the present invention will be described with reference to the drawings. First, FIG. 1 is a perspective view showing a table in the first embodiment, and FIG. 1A shows a table when the top plate is in a folding position. FIG. 1B is a perspective view showing the table when the top plate is in the use position, and FIG. 2A is a front view showing the table when the top plate is in the lower position. 2 (b) is a front view showing the table when the top plate is in the upper position, FIG. 3 is a longitudinal side view showing the structure of the leg, and FIG. FIG. 5 is a vertical side view showing the engaging member and the receiving member when in the use position, and FIG. 5 is a vertical side view showing the engaging member and the receiving member when the top plate is in the folded position. These are the AA longitudinal cross-sectional rear views in FIG. 4 which show an engaging member, a receiving member, and a press member, and FIG. 7 shows a table. FIG. 8 is a side view taken along the line BB in FIG. 7 showing the connecting rod, FIG. 9 is a perspective view showing an arrangement state of the locking wire and the engaging member, and FIG. FIG. 11 is a perspective view showing a lock operation member and a support bracket, and FIG. 11 is a conceptual diagram showing a configuration of a table. 1 (a) and 1 (b) is the front side (front side) of the table, and the left side of FIGS. 3, 4, 5, and 8 is the front side of the table (front). 7), the upper side of the sheet of FIG. 7 will be described as the front side (front side) of the table. In the present embodiment, in the top plate, the end of the top plate disposed on the front side when the top plate is in the use position will be described below as the front end side (front side) of the top plate.

  Reference numeral 1 in FIGS. 1A and 1B is a folding lift table to which the present invention is applied. The table 1 has one top plate 2 and two legs 3 that are spaced apart from each other on the left and right. A base bracket 4 extending in the front-rear direction is provided at the lower portion of the leg 3, and casters 5 installed on the floor surface are attached to the front end portion and the rear end portion of the base bracket 4. Therefore, the user can run the table 1 freely.

  Further, the top plate 2 has a use position where the top plate 2 is substantially horizontal by a support bracket 6 pivotally supported with respect to the legs 3 provided on the left and right sides (see FIG. 1B), The plate 2 is supported so as to be rotatable between a folding position where the plate 2 stands up substantially vertically (see FIG. 1A). The table 1 can be installed and used at any location when the top plate 2 is in the use position, and can be installed and stored at any location when the top plate 2 is in the folding position. It has become. In addition, by standing the top plate 2, the plurality of tables 1 can be stored close to each other.

  As shown in FIG. 1 (a), the top plate 2 is locked (fixed) so as not to rotate at the use position or the folding position, and a lock operation unit 7 capable of releasing the locked state is provided. Further, it is provided in the vicinity of the side end portion of the top plate 2 at a position lateral to the support bracket 6. As will be described later, the user moves the lock operation lever 8 as the lock operation member in the present embodiment of the lock operation unit 7 in parallel to the top plate 2 toward the side end of the top plate 2. , Can be unlocked.

  Further, as shown in FIGS. 2 (a) and 2 (b), the table 1 includes a lower position in which the top plate 2 is lowered (see FIG. 2 (a)), and an upper position in which the top plate 2 is raised. (See FIG. 2 (b)), the height position of the top plate 2 can be adjusted arbitrarily.

  In the vicinity of the front end portion of the top plate 2, an elevating operation unit 9 that is operated by a user when the top plate 2 is raised and lowered is provided (see FIG. 1A). The user maintains the state in which the elevating operation lever 10 as the elevating operation member in the present embodiment of the elevating operation unit 9 is moved in parallel to the top plate 2 toward the front end portion of the top plate 2 while maintaining the state. The height position of the top plate 2 can be freely changed by lifting or lowering the plate 2.

  As shown in FIG. 3, the leg body 3 has a lifting rod 11 that is provided with a top plate 2 on the top and is raised and lowered, and a support rod 12 that is installed on the floor and supports the lifting rod 11. Yes. The elevating rod 11 and the supporting rod 12 have a substantially cylindrical shape, and an opening 13 is formed on the upper portion of the supporting rod 12, and the supporting rod 12 is fitted in the elevating rod 11 from the opening 13 so as to be movable up and down. ing.

  A linear bearing member (not shown) having rolling elements (not shown) contacting the outer peripheral surface of the lifting rod 11 and the inner peripheral surface of the support rod 12 is disposed between the lifting rod 11 and the support rod 12. The elevating rod 11 is raised and lowered smoothly. Furthermore, the support rods 12 arranged on the left and right are connected to each other by a connection rod 14 connected in the vicinity of the upper portion thereof, and this connection rod 14 extends between the legs 3 in a substantially straight line shape. Yes.

  In addition, a gas spring 15 as a lifting means in the present embodiment is provided inside the lifting rod 11. The gas spring 15 includes a cylinder 16 in which gas (air) is sealed, and a piston rod 17 which is disposed inside the cylinder 16 and is taken in and out from a lower end portion of the cylinder 16. The vertical length of the gas spring 15 can be changed by inserting and removing the piston rod 17.

  The piston rod 17 is operated by pressing a push rod 18 as an operating portion provided in the upper end portion of the gas spring 15 in this embodiment, and the vertical length of the gas spring 15 is arbitrarily changed. Can do. Along with the change in the vertical length of the gas spring 15, the lifting rod 11 is also lifted up and down. In addition, the vertical position of the gas spring 15 is fixed, and the height position of the lifting rod 11 is also fixed.

  A receiving member 19 is fixed to the upper part of the lifting rod 11, and a support bracket 6 is pivotally supported by a pivot provided on the receiving member 19. The support bracket 6 is fixed to the lower surface of the top plate 2. The top plate 2 is rotatably supported via a support bracket 6. The substantially central portion of the support bracket 6 in the front-rear direction has a substantially U-shape that is opened downward (on the receiving member 19 side) in a longitudinal rear view, and when the top plate 2 is in the folding position, It fits (see FIG. 6).

  As shown in FIG. 3, an engagement member 20 that is slid in the front-rear direction along the support bracket 6 is provided at the center of the support bracket 6. The engagement member 20 is formed with two long holes 20a extending in the front-rear direction penetrating in the vertical direction, and a support member 21 fixed to the back surface of the support bracket 6 is disposed in the long hole 20a. Thus, the engagement member 20 is attached to the support bracket 6 so as to be slidable in the front-rear direction.

  The engaging member 20 has a pair of front and rear engaging claws 20b, 20c protruding downward. A pair of front and rear engaged portions 19b and 19c with which the engaging claw portions 20b and 20c are engaged are formed at the front end portion and the rear end portion of the receiving member 19, respectively. Further, the rear side engaged portion 19 c is a hanging piece extending downward from the rear end portion of the receiving member 19.

  In addition, the engaged portion 19b on the front side is arranged farther from the pivot 22 than the engaged portion 19c on the rear side. Furthermore, in this embodiment, the engaging claws 20b and 20c of the engaging member 20 and the engaged portions 19b and 19c of the receiving member 19 are engaged with each other, so that the top plate 2 can be Locking means that can be fixed so as not to rotate at the folding position is configured.

  Further, the support bracket 6 is provided with a coil spring 23 as an urging member in the present embodiment that urges the engaging member 20 in the forward direction (engagement direction). By the urging force of the coil spring 23, either the front engaged portion 19b and the engaging claw portion 20b, or the rear engaged portion 19c and the engaging claw portion 20c are engaged with each other. When the user operates the lock operation lever 8, the engagement member 20 is moved in the backward direction (withdrawal direction) against the urging force of the coil spring 23.

  Next, the lock operation unit 7 will be described in detail. 9 and 10 show a state where the lock operation unit 7 is viewed from the back side of the table 1 when the top 2 is in the folding position. 9 and 10 show a state in which the top plate 2 is viewed from the upper surface side of the top plate 2 without showing the top plate 2 in order to help understanding.

  As shown in FIG. 10, the support bracket 6 is formed with a notch 24 as an opening in the present embodiment that opens to both the left and right sides at the upper portion of the support bracket 6 when in the folded position. Has been. The lock operation unit 7 is disposed close to the side which is the outer side of the notch 24.

  The lock operation unit 7 is attached at a position where the user can hold the lock operation lever 8 with other fingers while putting a thumb on the side end of the top plate 2. Therefore, as will be described later, when the top plate 2 is rotated, the user can rotate the top plate 2 while holding the lock operation lever 8 with one hand.

  The lock operation unit 7 has a frame body 25 in which the lock operation lever 8 is slid. A lock wire 27 is connected to the lock operation lever 8 via a link member 26, and the lock operation lever 8 is linked to the engagement member 20 via the lock wire 27.

  Note that two lock wires 27 are connected to the lock operating lever 8, and each lock wire 27 extends to the engaging member 20 disposed in the left and right support brackets 6 (FIG. 11). reference). Furthermore, the locking wire 27 is inserted into a cylindrical member (not shown) that covers the locking wire 27, and is locked within the cylindrical member (not shown) when the lock operation lever 8 is operated. The wire 27 is moved.

  As shown in FIG. 10, the lock wire 27 extending from the lock operation lever 8 extends from the frame body 25 and is inserted from one side to the notch 24 and extends to the other side. It extends along the support bracket 6 in the direction opposite to the engaging direction of the engaging member 20, that is, toward the rear end side of the top plate 2.

  As shown in FIGS. 2 (b) and 7, at the use position, a substantially straight line is formed between the left and right legs 3 at a substantially central portion in the front-rear direction (width direction) on the lower surface side of the top plate 2. A cover body 28 as a first housing portion in the present embodiment extending in a shape is fixed (see FIG. 1A). Furthermore, the cover body 28 has a substantially U-shape opening upward in a longitudinal side view, and can hold a lock wire 27 and a lift wire 29 described later.

  As shown in FIG. 9, the lock wire 27 extending from the frame body 25 extends to the cover body 28 attached to the lower surface of the top plate 2, and each lock wire 27 is formed inside the cover body 28. Each extends to the left and right ends of the cover body 28. The locking wire 27 is extended toward the engaging direction of the engaging member 20, that is, toward the front end side of the top plate 2. Then, the end of the locking wire 27 is connected to the engaging member 20.

  When the user grips the lock operation lever 8, the gripping force of the user is transmitted via the two lock wires 27, and the left and right engaging members 20 are slid simultaneously. That is, the sliding movement of the engaging member 20 is synchronized by the two locking wires 27. The two lock wires 27 constitute the lock synchronization means in this embodiment.

  As shown in FIG. 4, when the top plate 2 is in the use position, the top plate 2 is locked so as not to rotate by engaging the engaged portion 19b on the front side and the engaging claw portion 20b. ing. When the user operates the lock operation lever 8, the engaging member 20 is moved in the rear direction (rear end side), and the engaging claw portion 20b is detached from the engaged portion 19b on the front side. The support bracket 6 can be rotated about the pivot 22 of the receiving member 19.

  And a user rotates the top plate 2 to a folding position, and makes it stand. When the user releases his / her hand from the lock operation lever 8 in the folding position, the engaging member 20 is slid upward (engaged direction) by the urging force of the coil spring 23, and the lower side of the top plate 2 (rear side) The engaging claw portion 20c on the end side is engaged from the lower side with respect to the engaged portion 19c (hanging piece) on the rear side (see FIG. 5).

  As shown in FIG. 5, when the top plate 2 is in the folding position, the top plate 2 is locked so that it cannot rotate by engaging the engaged portion 19c and the engaging claw portion 20c on the rear side. Has been. When the user operates the lock operation lever 8, the engaging member 20 is moved downward (rear end side), and the engaging claw portion 20c is detached from the engaged portion 19c on the rear side. The support bracket 6 can be rotated about the pivot 22 of the receiving member 19.

  And a user rotates the top plate 2 to a use position, and makes it horizontal. When the user releases his / her hand from the lock operating lever 8 at the use position, the engagement member 20 is slid forwardly (engagement direction) by the urging force of the coil spring 23, and the front side (front end portion) of the top plate 2 is moved. The engaging claw portion 20b on the side is engaged with the engaged portion 19b on the front side from the rear side (see FIG. 4).

  In the present embodiment, the user operates the lock operation lever 8 when the top plate 2 is in the use position (or the folding position), and the top plate 2 becomes the folding position (or the use position). The hand is released from the lock operation lever 8, but the lock is released at the use position (or the folding position), and when the top 2 starts to rotate, the hand is released from the lock operation lever 8. Since the front and rear engaging claws 20b and 20c have tapered surfaces at their front ends, the engaging claws 20b and 20c are automatically engaged with the engaged portions 19b and 19b, respectively. It is adapted to be engaged with 19c.

  An air damper 30 is provided between the lower surface of the top plate 2 and the receiving member 19. Therefore, the rotation speed at the time of rotating the top plate 2 can be kept constant, and the top plate 2 can be safely rotated when returning the top plate 2 from the folding position to the use position. .

  Next, the raising / lowering operation of the top plate 2 will be described in detail. As shown in FIG. 7, the structure of the raising / lowering operation part 9 provided in the vicinity of the front-end part of the top plate 2 is the same structure as the lock operation part 7 mentioned above. The elevating operation unit 9 is attached to a position where the user can hold the elevating operation lever 10 with other fingers while putting a thumb on the front end of the top plate 2. Therefore, as will be described later, when the top plate 2 is raised and lowered, the user can raise and lower the top plate 2 while holding the lifting operation lever 10 with one hand.

  An elevating wire 29 is connected to the elevating operation lever 10 of the elevating operation unit 9, and this elevating wire 29 extends to a cover body 28 attached to the lower surface of the top plate 2, Thus, each lifting wire 29 is extended to the left and right ends of the cover body 28, respectively. And the edge part of the wire 29 for raising / lowering is introduce | transduced in the support bracket 6 (refer FIG. 9). The elevating wire 29 is inserted in a cylindrical member (not shown) that covers the elevating wire 29, and when the elevating operation lever 10 is operated, the elevating wire 29 is inserted in the cylindrical member (not shown). 29 is moved.

  As shown in FIGS. 4 and 6, a space portion 31 is formed between the support bracket 6 and the receiving member 19. In the space portion 31, the push rod 18 of the gas spring 15 is disposed at a position between the front and rear engaged portions 19 b and 19 c of the receiving member 19, and the push rod 18 is disposed above the push rod 18. A pressing member 32 capable of pressing 18 is disposed.

  As described above, the engaged portions 19b and 19c are provided at the front and rear positions of the receiving member 19, and the pivot 22 is provided in front of the rear engaged portion 19c. On the inner surface, when the top plate 2 is in the use position, the pressing member 32 is attached to the front side of the pivot 22 and the rear side of the engaged portion 19b on the front side.

  The pressing member 32 has a thin plate-like fixing portion 33 fixed to the inner surface of the support bracket 6, and a rotating portion 34 having a pressing surface 34 a that is pivotally supported by the fixing portion 33 and presses the push rod 18. It consists of In addition, the fixed portion 33 and the rotating portion 34 are arranged so as to be substantially L-shaped when viewed from the back (front view), and a space between the lateral position of the fixing portion 33 and the upper position of the rotating portion 34. The engagement member 20 is slid within the portion 31.

  The end portion of the lifting wire 29 is linked to the rotating portion 34 of the pressing member 32, and the user grips the lifting operation lever 10 so that the user can grip the lifting wire 29 via the two lifting wires 29. The force is transmitted, and the rotating portions 34 of the left and right pressing members 32 are simultaneously rotated.

  And by the rotation part 34 being rotated, the pressing surface 34a presses the push rod 18, and the vertical length of the gas spring 15 can be arbitrarily changed. Along with the change, the lifting / lowering rod 11 is also moved up and down. That is, the height position of the top plate 2 can be changed while the user holds the elevating operation lever 10. The pressing surface 34a of the rotating portion 34 is a member that is wide in the left-right direction so that the push rod 18 can be easily pressed.

  A spring member (not shown) is provided between the fixed portion 33 and the rotating portion 34 as an urging means that urges the rotating portion 34 in a direction away from the push rod 18. Yes. Therefore, when the user releases the lifting / lowering operation lever 10, the rotating unit 34 is rotated in a direction away from the push rod 18 by a rotating biasing force by a spring member (not shown), and the rotating unit 34. The pressing surface 34a is separated from the push rod 18, the vertical length of the gas spring 15 cannot be changed, and the height position of the top plate 2 is fixed.

  Furthermore, when the top plate 2 rotates from the use position toward the folding position, the support bracket 6 is separated from the receiving member 19 and the pressing member 32 is also separated from the push rod 18. Therefore, in a state other than when the top plate 2 is in the use position, even if the user holds the elevating operation lever 10 and the rotation unit 34 is rotated, the pressing surface 34a of the rotation unit 34 pushes the push rod 18. It becomes impossible to press.

  In the table 1 of the present embodiment, there is provided an elevating synchronization means for synchronizing the operation of the left and right gas springs, that is, the vertical movement of the elevating rod 11, and the elevating rod 11 arranged on the left and right by the elevating synchronization means Each can move up and down with the same amount of movement. Therefore, when changing the height position of the top plate 2, the horizontal state of the top plate 2 is maintained.

  Next, the lifting / lowering synchronizing means will be described in detail. As shown in the conceptual diagram of FIG. 11, the elevating synchronization means in this embodiment is provided with elevating synchronization wires 35 connected to the lower portions of the left and right elevating rods 11, and connecting elevating wires 14 provided on the connecting rods 14. The rack 36 is connected to the rack 36, and the pinion 37 is engaged with each rack 36 (see a partially enlarged view of FIG. 7).

  As shown in FIG. 7, each lifting / lowering synchronization wire 35 extends along the connecting rod 14, and the lifting / lowering synchronization wire 35 is inserted into a cylindrical member 38 that covers the lifting / lowering synchronization wire 35. When the lifting / lowering rod 11 is lifted / lowered, the lifting / lowering synchronizing wire 35 is moved within the cylindrical member 38.

  The connecting rod 14 is provided with a guide rail 39 that guides the movement of the two racks 36 in the left-right direction. As shown in FIG. 8, the connecting rod 14 has a substantially U-shape opening downward in a side view in the longitudinal direction, and a guide rail 39 is fixed to the lower surface (back surface) of the connecting rod 14. As shown in FIG. 7, the cylindrical member 38 extends from the left and right end portions of the guide rail 39 to the upper end portion of the support rod 12, and the lifting and lowering synchronization wire 35 connected to each rack 36 includes The end of the guide rail 39 is inserted into the cylindrical member 38.

  More specifically, as shown in FIG. 9, inclined members 12 ′ that are inclined downward to the upper end of the support rod 12 are attached to the left and right ends of the connecting rod 14. The inclined member 12 ′ has the opening 13 described above, and the inclined member 12 ′ is fixed to the elevating rod 11 regardless of whether the top plate 2 is in the lower position or the upper position. It is arranged at a position below the member 19 (see FIGS. 2A and 2B).

  Further, the cylindrical member 38 into which the elevating synchronization wire 35 is inserted extends from the slit hole 12a formed in the inclined member 12 'into the inclined member 12', and the support rod 12 extends along the inclined member 12 '. It is inclined and extended to the upper end, and a lifting / lowering synchronization wire 35 is inserted into the support rod 12 from the slit hole 12a.

  In this way, the connecting rod 14 is fixed to the upper end portion of the support rod 12 via the inclined member 12 ′, so that the lower surface of the connecting rod 14 is disposed at a position higher than the upper end portion of the support rod 12, and The lifting / lowering synchronization wire 35 guided from the lower surface of the connecting rod 14 extends at a position below the receiving member 19 of the lifting / lowering rod 11. Therefore, the lifting / lowering synchronization wire 35 is reliably separated from the receiving member 19, and the locking wire 27 extending to the receiving member 19 and the lifting / lowering synchronizing wire 35 can be reliably prevented from interfering with each other.

  As shown in FIG. 2B, the connecting rod 14 for accommodating the rack 36 and the pinion 37 (transmission means) constitutes the second accommodating portion in the present embodiment. Furthermore, the cover body 28 and the connecting rod 14 which are the first accommodating portions described above extend in the left-right direction and are arranged in a space below the top plate 2, and the top plate 2 is in either the use position or the folding position. Even if it exists, the cover body 28 is arrange | positioned in the upper position rather than the connecting rod 14. FIG.

  As shown in FIG. 11, when each lifting / lowering rod 11 is lifted / lowered, the rack 36 is moved along the guide rail 39 via the lifting / lowering synchronization wire 35 along with the movement of the lifting / lowering rod 11. Then, the movement amount (movement distance) of both racks 36 is synchronized by the pinion 37. In other words, the same movement amount as the movement amount of one lifting synchronization wire 35 is transmitted to the other lifting synchronization wire 35 by the lifting synchronization means.

  As described above, in the table 1 according to the present embodiment, the top plate 2 can be rotated between the use position where the top plate 2 is substantially horizontal and the folding position where the top plate 2 stands substantially vertically. A gas spring 15 that supports the leg 3 and adjusts the height position of the top plate 2 is provided inside each leg 3, and a push that activates the gas spring 15 by being pressed on the upper part of the leg 3 When the rod 18 is provided and the lifting operation lever 10 is operated, the pressing member 32 that presses the push rod 18 is provided on the top plate 2 side. When the top plate 2 rotates from the use position, the pressing member 32 is When the top plate 2 is rotated from the use position by being separated from the push rod 18 and cannot be pressed, the pressing member 32 is separated from the push rod 18 and pushed together with the rotation of the top plate 2. Rod 1 Can not be pressed and the gas spring 15 cannot be operated, so that the push rod 18 can be operated only when it is in the use position to raise and lower the top plate 2, and the top plate 2 is in the folding position. Sometimes, it is possible to prevent the top plate 2 from being raised or lowered by mistake due to a user's erroneous operation or the like while the top plate 2 is being rotated.

  Further, formed on the engaging claws 20b and 20c formed to protrude from the engaging member 20 provided to be slidable on the top plate 2 side, and the receiving member 19 provided on the upper portion of the leg 3. When the engaged portions 19b and 19c are engaged with each other, a locking means that can fix the top plate 2 in a non-rotatable position at the use position or the folding position is configured, and the engaged portion 19b in the receiving member 19 is configured. , 19c, the push rod 18 and the pressing member 32 are arranged in the space 31 formed between the engaging claws 20b, 20c. Therefore, the size of the space 31 of the receiving member 19 where the push rod 18 and the pressing member 32 are arranged can be secured, and the locking means configured by the engaging member 20 and the receiving member 19, and the push rod 18 And push And a member 32 can be disposed intensively to compact.

  Further, on the lower surface of the top plate 2, a support bracket 6 having a substantially U-shape with an opening on the receiving member 19 side to fit the receiving member 19 is fixed, and the support bracket 6 is provided on the receiving member 19. The top plate 2 is supported by being pivotally supported by the support bracket 6, and the engagement member 20 is provided on the back surface of the support bracket 6 so as to be slidable along the support bracket 6. When the joint member 20 is covered, the sliding movement of the engaging member 20 is smoothly guided along the support bracket 6, and when the top plate 2 is in the use position, the receiving member 19 is moved by the support bracket 6. Can be concealed.

  The engaged portions 19 b and 19 c are provided at the front and rear positions of the receiving member 19, and the pivot 22 is provided on the front side of the rear engaged portion 19 c, and on the inner surface of the support bracket 6, When the top plate 2 is in the use position, the pressing member 32 is attached to the front side of the pivot 22 and the rear side of the engaged portion 19b on the front side. 22, the front and rear engaged portions 19 b and 19 c, and the engaging member 20 disposed on the back surface of the support bracket 6 can be arranged so as not to interfere with each other.

  The pressing member 32 includes a fixing portion 33 fixed to the inner surface of the support bracket 6 and a rotating portion 34 having a pressing surface 34 a that is pivotally supported by the fixing portion 33 and presses the push rod 18. The fixing portion 33 and the rotating portion 34 are arranged so as to form a substantially L shape, and the engaging member 20 is slid and moved by the side of the fixing portion 33, whereby the fixing portion 33 and the rotating portion 34 are rotated. The moving part 34 and the engaging member 20 can be arranged in the support bracket 6 in a compact manner, and the movements of each other can be prevented from interfering with each other.

  Next, a table according to the second embodiment will be described with reference to FIGS. It should be noted that the same components as those shown in the above-described embodiment are denoted by the same reference numerals and redundant description is omitted. FIG. 12 is a conceptual diagram illustrating a configuration of a table in the second embodiment, FIG. 13 is a perspective view illustrating an engaging member and a receiving member, and FIG. 14 is a perspective view illustrating a support bracket and a leg body. It is.

  As shown in FIG. 12, in the table 1 ′ in the first embodiment, the lock synchronization means is configured by using the two locking wires 27. However, the table 1 ′ in the second embodiment is the table in the first embodiment. Unlike 1 ′, the engaging members 20 arranged on the left and right are connected by a connecting rod 40, and the sliding movement of the engaging member 20 is synchronized by the connecting rod 40. This connecting rod 40 constitutes the lock synchronization means in this embodiment.

  FIG. 13 shows a state in which the engaging member 20 is viewed from the upper surface side of the table 1 ′ when the top plate 2 is in the use position. Note that FIG. 13 shows a state in which the top plate 2 is viewed from the upper surface side of the top plate 2 without showing the top plate 2 in order to help understanding.

  As shown in FIG. 13, a connecting rod 40 extending in the left-right direction is fixed to a substantially central portion in the front-rear direction of the engaging member 20. A similar connecting rod 40 is also fixed to the other engaging member 20. When one of the engagement members 20 arranged on the left and right is slid in the front-rear direction, the other engagement member 20 connected via the connecting rod 40 is also slid in the front-rear direction. It has become so.

  As shown in FIG. 11, in the second embodiment, there is only one locking wire 27 extending from the locking operation unit 7, and this locking wire 27 is the engagement member 20 disposed on the left side. It is connected to the. That is, when the user operates the lock operation unit 7, the engaging member 20 arranged on the left side is activated, and the engaging member 20 arranged on the right side via the connecting rod 40 is also activated.

  The connecting rod 40 is accommodated in a cover body 28 as a first accommodating portion in the present embodiment, which is fixed to the lower surface of the top plate 2. Since the connecting rod 40 is housed in the cover body 28 in this way, the user's knee or the like hits the connecting rod 40 during use of the table 1 ′, and there is no possibility that the engaging member 20 malfunctions.

  As shown in FIG. 14, the support bracket 6 ′ according to the second embodiment has a substantially U shape that is opened to the receiving member 19 side in a sectional view over the entire length in the longitudinal direction. The support bracket 6 ′ is formed with a hole 41 as an opening in the present embodiment that opens to both the left and right sides at the upper portion of the support bracket 6 ′ when in the folded position.

  The lock wire 27 extending from the lock operation lever 8 is inserted into the hole 41 and is in the direction opposite to the engagement direction of the engagement member 20 along the support bracket 6 ′, that is, the rear end of the top plate 2. After extending toward the portion side, the engaging member 20 extends in the engaging direction, that is, toward the front end side of the top plate 2, and the end of the locking wire 27 connects to the engaging member 20. Is done.

  A long hole 42 is formed on the front end side of the support bracket 6 ′, and a protective cover 43 that is slidably moved along the long hole 42 is provided. The other end of the protective cover 43 is pivotally attached to the front end portion of the receiving member 19. The protective cover 43 always hides the engaging member 20 and the receiving member 19, and there is no possibility that foreign matter is caught between the engaging member 20 and the receiving member 19.

  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 said Example, although it has the structure which provides the lock operation part 7 in the one side edge part vicinity in the top plate 2 in the said Example, the lock operation part 7 is provided in the right and left side edge part vicinity. The operation of the engagement member 20 disposed in the left and right support brackets 6 is configured to be synchronized by the lock wire 27, the connecting rod 40, etc., and when either the left or right lock operation unit 7 is operated, both the left and right The engaging member 20 may be operated.

It is a perspective view which shows the table in Example 1, (a) is a perspective view which shows a table when a top plate exists in a folding position, (b) is a table when a top plate exists in a use position. FIG. (A) is a front view which shows a table when a top plate exists in a downward position, (b) is a front view which shows a table when a top plate exists in an upper position. It is a vertical side view which shows the structure of a leg. It is a vertical side view which shows an engaging member and a receiving member when a top plate exists in a use position. It is a vertical side view which shows an engaging member and a receiving member when a top plate exists in a folding position. It is an AA vertical rear view in FIG. 4 which shows an engaging member, a receiving member, and a press member. It is a bottom view which shows a table. It is a BB vertical side view in Drawing 7 showing a connecting rod. It is a perspective view which shows the arrangement | positioning state of the wire for a lock | rock, and an engaging member. It is a perspective view which shows a lock operation member and a support bracket. It is a conceptual diagram which shows the structure of a table. It is a conceptual diagram which shows the structure of the table in Example 2. FIG. It is a perspective view which shows an engaging member and a receiving member. It is a perspective view which shows a support bracket and a leg.

Explanation of symbols

1, 1 'table 2 top plate 3 legs 6, 6' support bracket 7 lock operation part 8 lock operation lever (lock operation member)
9 Elevating Operation Unit 10 Elevating Operation Lever (Elevating Operation Member)
11 Lifting rod 12 Support rod 13 Opening portion 14 Connecting rod (second housing portion)
15 Gas spring (lifting means)
18 Push rod (actuator)
19 receiving member 19b, 19c engaged part 20 engaging member 20b, 20c engaging claw part 22 pivot 23 coil spring (biasing member)
24 Notch (opening)
27 Locking wire (lock synchronization means)
28 Cover body (first housing part)
29 Elevating wire 31 Space portion 32 Pressing member 33 Fixing portion 34 Rotating portion 34a Pressing surface 35 Elevating / lowering synchronizing wire (elevating / lowering synchronizing means)
36 racks (elevating / lowering means)
37 Pinion (elevation synchronization means)
39 Guide rail 40 Connecting rod (lock synchronization means)
41 hole (opening)

Claims (5)

  A top plate is supported on the leg so as to be rotatable between a use position where the top plate is substantially horizontal and a folding position where the top plate stands up in a substantially vertical position. Elevating means for adjusting the position is provided inside each leg, and an operating part for operating the elevating means by being pressed is provided on the upper part of the leg, and the elevating operation member is operated. Thus, when a pressing member that presses the operating portion is provided on the top plate side and the top plate rotates from the use position, the pressing member is separated from the operating portion and cannot press the operating portion. Folding lifting table characterized by.   An engagement claw portion formed by projecting from an engagement member slidably provided on the top plate side, and an engaged portion formed on a receiving member provided on an upper portion of the leg. A lock means that can lock the top plate in a non-rotatable manner at the use position or the folding position by engaging with each other is configured, and a space formed between the engaged portions of the receiving member The foldable lifting table according to claim 1, wherein the operating portion and the pressing member are arranged in a portion.   On the lower surface of the top plate, a support bracket having a substantially U-shape that is open on the receiving member side and externally fits the receiving member is fixed, and the support bracket is pivotally supported by a pivot provided on the receiving member. The folding device according to claim 2, wherein the top plate is supported, and the engaging member is slidably provided along the support bracket on a back surface of the support bracket. Type lifting table.   The engaged portion is provided at a front-rear position of the receiving member, the pivot is provided in front of the engaged portion on the rear side, and the top plate is provided on the inner surface of the support bracket. 4. The foldable lifting / lowering according to claim 3, wherein, when in the use position, the pressing member is attached to the front side of the pivot and the rear side of the engaged portion on the front side. table.   The pressing member includes a fixing portion fixed to an inner surface of the support bracket, and a rotating portion having a pressing surface that is pivotally supported by the fixing portion and presses the operating portion. The foldable lifting / lowering according to claim 4, wherein the rotating part is disposed so as to form a substantially L shape, and the engaging member is slid on the side of the fixed part. table.

Images