JP2009039458A - Folding table control lever device - Google Patents

Abstract

【Task】
Provided is a foldable table locking device in which a locking operation and a releasing operation are smooth and reliable, highly reliable, easy to assemble, and low in processing accuracy and assembly accuracy of members.
[Solution]
A top plate fixing bracket 16, a lock bracket 17 and an operating member 18 are arranged between both side plates of the upper arm 13, and the lock bracket is pivotally supported on the both side plates 15 of the upper arm by the support shaft 21. The lock pin 22 that is engaged with the first engagement portion 19 or the second engagement portion 20 and maintains the horizontal posture and the standing posture is loosely inserted into the long holes 23 formed in the both side plates of the upper arm, and The lock pin is received in the bifurcated locking portion 24 formed at the tip, and the lock fitting is urged by the elastic urging means 25 in the direction in which the lock pin engages the first engagement portion or the second engagement portion. Then, the lock fitting is rotated based on the operation of the operation member, and the lock pin is retracted along the long hole to release the engagement with the first engagement portion or the second engagement portion.
[Selection] Figure 7

Description

  The present invention relates to an operating lever device for a folding table, and more specifically, an operating lever device for a folding table provided with a lock mechanism for fixing a top plate to a substantially horizontal horizontal posture and an upright posture rotated upward. It is about.

  Conventionally, the upper side of the left and right legs are connected to the upper and lower sides of the top plate so that the top plate can be turned up and down, and the top plate is fixed in a substantially horizontal use state and a folded state in which the top plate is turned upward. Various lock devices for the table are provided.

  For example, in Patent Document 1, a shaft portion in which an angle member is fixed to one end is fitted into an end portion of a round pipe, and the angle member is connected to a non-rotatable screw with a slit groove formed in a base portion of an operation lever. A structure in which the base of the operating lever is screwed to the angle member while being inserted is disclosed. This connection structure using the operating lever and the angle member can be used on both the left and right sides, but has the disadvantage that the angle member is exposed and the appearance is impaired.

On the other hand, Patent Document 2 discloses a folded state in which upper and lower legs are connected to both upper and lower legs so that both sides of the lower surface of the top plate can be turned up and down, and the top plate is rotated substantially horizontally and upward. A folding table locking device that is fixed to the leg plate, wherein the top plate is pivotally connected to a support plate provided on the leg by a main shaft, and a first engagement portion is provided at an edge of the support plate. And a second engaging portion, and a restricting portion projecting from a leading end portion of a restricting member disposed on both side portions of the bottom surface of the top plate so as to be vertically tiltable engages with the first engaging portion when in use. In the folded state, the restricting member is elastically biased to engage with the second engaging portion, and abuts against an operation piece provided at a base end portion of the restricting member, so that the restricting portion is in the first engagement. The operation member that operates the restriction member in a direction away from the joint portion or the second engagement portion can be rotated on both side portions of the lower surface of the top plate. It discloses a locking device for Northern folding table, and is the point of mounting the operation lever to the end of the shaft passing through the restricting member is not described, is not a structure capable of horizontally shared.
Japanese Patent No. 3525329 JP 2004-121441 A

  In view of the above-mentioned situation, the present invention intends to solve the problem by connecting upper arms attached to both lower side portions of the top plate to the upper ends of the left and right legs so that the top plate can be turned up and down. In a folding table with a lock mechanism that maintains a posture and a standing posture, the control lever for operating the lock mechanism can be used on both the left and right sides, so that it can be easily and securely attached to the end of the interlocking shaft. The present invention also provides an excellent operating lever device for a folding table.

  In order to solve the above-mentioned problems, the present invention connects the upper arms attached to the lower side of the top plate to the upper ends of the left and right legs so as to be able to rotate up and down, and the top plate is placed in a horizontal posture and a standing posture. In a foldable table having a locking mechanism for maintaining the locking mechanism, an operating member for operating the locking mechanism provided in the upper arm is made to pass through an interlocking shaft made of a square pipe so as not to rotate, and is connected to an end of the shaft. The control lever is a molded product made of a synthetic resin that is symmetrical to the left and right. A cylindrical part is formed at the base of the lever part, and a mounting part is formed at the center of the cylindrical part so as to close the inside. The shaft is formed with a square hole into which the shaft is non-rotatably fitted. The end of the shaft is fitted into the square hole, and a cap member is fitted into the opposite cylindrical portion. The engaging part protruding from the end Non-rotatably fitted in the center hole of Yafuto constituted the operating lever device of the folding table, characterized in that fastened with screws passing through the cylindrical portion and the shaft and the engaging portion (claim 1).

  Here, it is preferable that one end surface of the cap member is a decorative surface, and a pictogram or a logo is displayed on the decorative surface.

  According to the first aspect, the left and right operation levers can be made common, and the appearance image can be easily changed by changing the color of the cap member. By fitting the engaging part of the cap member into the center hole of the shaft and fastening with the screw that penetrates the cylindrical part, the shaft and the engaging part, the shaft made of the square pipe can be securely and firmly attached without being crushed. .

  According to the second aspect, when the cap member is fitted to the cylindrical portion of the operation lever without being rotated, the pictogram or logo displayed on the decorative surface of the cap member can be positioned in the correct direction.

  Next, the present invention will be described in more detail based on the embodiments shown in the accompanying drawings. 1 is an overall side view of the folding table of the present embodiment in a horizontal posture, FIG. 2 is a side view of the stowed state in a standing posture, FIG. 3 is a partial side view showing a rotating mechanism portion and a lock mechanism portion, and FIG. 20 shows details of each part. In the figure, reference numeral 1 denotes a leg, 2 denotes a top plate, 3 denotes a curtain plate, 4 denotes a mechanism portion, and 5 denotes an operation lever.

  The foldable table of this embodiment is connected to the upper ends of the left and right legs 1, 1 so that both sides of the lower surface of the top plate 2 can be turned up and down, and the top plate 2 is placed in a substantially horizontal horizontal position (FIG. 1). Reference) and a standing posture (see FIG. 2) in which the front portion of the top plate 2 is rotated upward, and the curtain plate 3 disposed below the rear portion of the top plate 2 is replaced with the top plate 2. It is linked to the top plate 2 so as to be movable between a use state in which it hangs down close to the rear and a folded state along the rear edges of both legs 1 and 1, and is connected to the top plate 2 in a horizontal position. It has a structure that can be locked when it is in a posture. In the standing posture, it can be stacked back and forth.

  The upper end of the leg 1 and the top plate 2 are connected to each other by the mechanism portions 4 and 4 on the lower surfaces of both sides, and the lock is released by pushing down the operation lever 5 exposed on the side surface downward, so that the top plate 2 is in a horizontal posture. It can be rotated and displaced between the standing postures and is automatically locked when the horizontal posture and the standing posture are reached. In this embodiment, since the operation lever 5 is pushed down to release the lock, the lock is not released even if a foot or another object hits the operation lever 5 unexpectedly. Further, the knee of the user sitting near the side of the top plate 2 may hit the operation lever 5, and in such a case, the lock is not released.

  First, the leg body 1 has a substantially inverted L shape in front view having a support leg 7 extending obliquely forward and upward from the rear part of the grounding leg 6 facing in the front-rear direction, and is integrally formed of aluminum die casting. However, the structure of the leg 1 is not limited in the present invention. The upper ends of the leg bodies 1, 1 on both sides are connected and integrated by a connecting pipe 9 via a leg connecting member 8. The leg connecting member 8 also serves as a rotating shaft of the top plate 2 as will be described later.

  As shown in FIGS. 1 and 17, the mechanism portion 4 is entirely covered with a synthetic resin cover 10, and the operation lever 5 is exposed from the front side surface. The rear part of the cover 10 supports both ends of a duct 11 provided along the rear part of the lower surface of the top plate 2. In addition, an outlet box 12 that can be moved up and down from the top plate 2 is provided above the duct 11. Inside the cover 10, a metal upper arm 13 that serves as a frame of the mechanism unit 4 is attached to the lower surface of the top plate 2. That is, the upper arms 13 and 13 attached to the upper ends of the left and right legs 1 and 1 on both sides of the lower surface of the top plate 2 are connected so as to be vertically rotatable.

  As shown in FIGS. 7 and 8, the upper arm 13 is a member having an inverted trapezoidal shape in a side view, having a substantially U-shaped cross section in which the side plates 15 and 15 are suspended from both sides of the fixing plate 14 attached to the top plate 2. . Between the side plates 15 and 15 of the upper arm 13, a top plate fixing bracket 16 fixed to the end of the connecting pipe 9, a lock fitting 17 and an operation member 18 for operating the lock fitting 17 are arranged. Yes.

  More specifically, as shown in FIG. 3 to FIG. 9, the first engagement portion 19 and the second engagement portion 20 are formed on the top plate fixing bracket 16 provided in the fixing portion related to the leg 1, and An intermediate portion of the lock fitting 17 is provided on both side plates 15 and 15 of the upper arm 13 so as to be vertically rotatable by a support shaft 21, and the first engagement portion 19 or the second engagement of the top plate fixing bracket 16 is provided. The lock pin 22 that engages with the portion 20 and maintains the horizontal posture and the standing posture is loosely inserted into the long holes 23 and 23 formed in the side plates 15 and 15 of the upper arm 13 so as to be guided to the engagement position. At the same time, the lock pin 22 is received in a bifurcated locking portion 24 formed at the tip of the lock fitting 17, and the lock pin 22 is further connected to the first engagement portion 19 or the second engagement portion 20. The elastic biasing means 25 biases the engaging member in the engaging direction, and the operation member 18 is operated. Than is to disengage the lock fitting first engagement portion 19 17 and the lock pin 22 is rotated to retract along the long hole 23 or the second engagement portion 20 on the basis of. That is, in the horizontal posture and the standing posture, the lock pin 22 is guided by the long holes 23 and 23 by the urging force of the elastic urging means 25, and automatically the first engagement portion 19 of the top plate fixing bracket 16 or The second engaging portion 20 is engaged and locked.

  Here, the lock fitting 17 has a pair of parallel lock pieces 26 and 26 which are continuous at an intermediate portion, and bifurcated locking portions 24 and 24 are formed at the distal ends of the lock pieces 26 and 26, respectively. The top plate fixing bracket 16 is configured to be positioned between the lock pieces 26 and 26 in a state of being mounted between the both side plates 15 and 15 of the upper arm 13. Further, an operating piece 28 for rotating the operating member 18 to the proximal end side from a shaft hole 27, 27 through which the support shaft 21 formed in both lock pieces 26, 26 of the lock fitting 17 is inserted. 28 is provided. The elastic urging means 25 is constituted by a kick spring, the coil portion 25A of the kick spring 25 is inserted into the support shaft 21 on one side of the lock fitting 17, and the elastic piece 25B is fixed to the upper arm 13 on one side. The elastic piece 25C that is abutted against the plate 14 and bent in the other crank shape is locked so as to straddle both the lock pieces 26, 26 of the lock fitting 17.

  Further, when the top plate 2 takes a horizontal posture or an upright posture, the elongated holes 23, in the direction along the engagement edges of the first engagement portion 19 and the second engagement portion 20 of the top plate fixing bracket 16. 23 is formed so that the lock pin 22 can smoothly move to the engagement position during the locking operation and the unlocking operation.

  3 and 4, the first engagement portion 19 and the second engagement portion 20 are formed on the front side of the top plate fixing bracket 16, and the lock fitting 17 is disposed in front of the first engagement portion 19 and the second engagement portion 20. In the horizontal posture, the lock pin 22 engages with the first engagement portion 19 to restrict the upward rotation of the front portion of the top plate 2 and the first contact formed on the upper end of the top plate fixing bracket 16. The stop portion 29 comes into contact with the fixing plate 14 of the upper arm 13 to restrict the downward rotation of the front portion of the top plate 2, and the lock pin 22 is engaged with the second engagement portion 20 in the standing posture. The front plate 2 is prevented from rotating forward, and the second stopper 30 formed at the rear end of the top plate fixing bracket 16 contacts the fixing plate 14 of the upper arm 13 to stop the top plate. The rear rotation of the front part of 2 is restricted.

  Next, a rotation mechanism part is demonstrated based on FIGS. A circular bearing hole 31 is formed in the outer side plate 15 of the upper arm 13, and a U-shaped opening 32 is formed in the inner side plate 15, and the fixing is performed so as to be continuous with the upper portion of the U-shaped opening 32. A notch 33 through which the top plate fixing bracket 16 can be inserted is formed in the plate 14. A semicircular portion below the U-shaped opening 32 is coaxial with the bearing hole 31. Then, a synthetic resin sliding ring 34 is fitted into the bearing hole 31 from the outside, and the synthetic resin is slidably fitted to the U-shaped opening 32 and the notch 33 so as to be slidable on the connecting pipe 9 below. A closing member 35 made of metal is fitted from the outside, and the leg connecting member 8 fitted to the sliding ring 34 so as to be rotatable from the outside is made unrotatable at the end of the connecting tube 9 in the upper arm 13. It comes to be connected.

  Here, the leg connecting member 8 has a substantially inverted L shape when viewed from the front, and the connecting portion 36 extending downward is fitted to the support leg 7 of the leg 1 so that the height can be adjusted and bolted. The horizontal portion 37 that extends horizontally has a cylindrical shaft portion 38, and the shaft portion 38 can be rotatably fitted to the sliding ring 34. In other words, the top plate 2 is configured such that the shaft portion 38 of the leg connecting member 8 connected to the leg 1 rotates around the bearing hole 31 formed in the side plate 15 outside the upper arm 13 via the sliding ring 34. By being movably connected, it can be turned up and down.

  In this embodiment, the closing member 35 is manufactured by integral molding, and a slit 40 is inserted into a ring portion 39 into which the connecting pipe 9 is fitted, and the slit 40 is expanded by twisting the connecting pipe 9. 9, the top plate fixing bracket 16 is inserted from the notch 33 of the upper arm 13 in a state restored to the original state, and the connecting pipe 9 is positioned in the U-shaped opening 32 while being restored. The closing member 35 is fitted into the U-shaped opening 32 and the notch 33. However, as shown in FIGS. 19 and 20, the upper and lower occluding members 41 are formed of synthetic resin, and the upper occluding member 41 </ b> A and the lower occluding member 41 </ b> B are positioned in the U-shaped opening 32 of the upper arm 13. The connecting tube 9 may be fitted into the U-shaped opening 32 and the notch 33 with the connecting tube 9 sandwiched from above and below.

  As described above, the sliding ring 34 is fitted into the bearing hole 31 formed in the outer side plate 15 of the upper arm 13, and the shaft portion 38 of the leg connecting member 8 is rotatably fitted to the sliding ring 34. The inserted structure can easily increase the accuracy, and the top plate 2 can be smoothly turned up and down. In addition, since the connecting tube 9 is slidably received by the closing member 41, it is possible to prevent bending and displacement. The top plate fixing bracket 16 is welded and fixed to both ends of the connecting tube 9, but the side surface of the top plate fixing bracket 16 can be welded with the end surface of the connecting tube 9 being in contact, Accuracy can be easily obtained.

  Next, the structure which connects the horizontal part 37 of the said leg connection member 8 and the edge part of the said connection pipe 9 so that rotation is impossible is demonstrated. As shown in FIGS. 7, 9, 11, and 12, an end portion of the horizontal portion 37 of the leg connecting member 8 is provided with a fitting portion 42 having an oval cross section, and the horizontal portion 37 Protrusions 43 are formed on both sides of the end surface with the fitting portion 42 interposed therebetween, and a through hole 44 is formed in the horizontal portion 37. Further, screw holes 45 are formed in the arc surface of the fitting portion 42. On the other hand, an oblong fitting hole 46 into which the fitting portion 42 is inserted is formed at the center of the top plate fixing bracket 16, and holes 47, 47 into which the projections 43, 43 are inserted. Further, a connecting plate 48 is welded to the inside from the end of the connecting tube 9, a screw hole 49 is formed at the center of the connecting plate 48, and a through hole 50 is formed on the outer peripheral surface of the end of the connecting tube 9. , 50 are formed.

  And, as described above, the horizontal portion 37 of the leg connecting member 8 and the end portion of the connecting tube 9 are rotatably mounted on both side plates 15, 15 of the upper arm 13. The fitting portion 42 of the leg connecting member 8 is fitted into the fitting hole 46 of the top plate fixing bracket 16 and the projections 43 and 43 are fitted into the holes 47 and 47. Screws (not shown) are screwed into the screw holes 45, 45 from the through holes 50, 50, and the bolts 51 inserted from the side into the through holes 44 of the horizontal portion 37 are screwed into the screw holes 49 of the connecting plate 48. And the horizontal part 37 of the said leg connection member 8 and the edge part of the said connection pipe 9 are attracted, and it connects firmly.

  Next, a drive mechanism that operates the operation lever 5 and operates the lock fitting 17 via the operation member 18 will be described. As shown in FIGS. 3 to 9 and FIGS. 13 to 16, the operating member 18 uses a pair of bushes 52, 52 on the front side plates 15, 15 of the upper arm 13, and is used for left-right interlocking. A shaft 53 made of a square pipe is rotatably provided, and the operation lever 5 is connected to an end of the shaft 53. Further, the operation lever 5 is symmetrical, and can be attached to both ends of the shaft 53 in the same direction, and cap members 54, 54 are attached to the ends so as to achieve more reliable connection and appearance. We are trying to improve.

  More specifically, as shown in FIG. 13, the bush 52 is made of synthetic resin, and is a sleeve portion that is rotatably fitted in circular holes 55, 55 formed in both side plates 15, 15 of the upper arm 13. 56 is formed outside, and a square hole 57 into which the shaft 53 is non-rotatably inserted is formed at the center. As shown in FIG. 14, the operation member 18 is made of synthetic resin, and has a square hole 58 into which the shaft 53 is non-rotatably inserted at the center, and the lock is formed on the side of the square hole 58. A pressing portion 59 that abuts the operation pieces 28 and 28 of the metal fitting 17 from below and rotates the lock metal fitting 17 against an elastic biasing force is formed. , 28 is provided in a projecting manner, and when it is in a locked state, the abutment portion 61 that abuts against the fixing plate 14 of the upper arm 13 and restricts the rotation is opposite to the pressing portion 59. Formed on the side.

  In addition, projecting portions 52A and 52A project outwardly at the opposing side end portions of the bushing 52, and the inner side of the bushing 52 is disposed on both sides of the square hole 58 of the operating member 18. Engagement pieces 18A and 18A are formed which are fitted on the side end portions of the first and second projections 52A and 52A.

  Then, the sleeve portion 56 of the bush 52 is fitted and held in the circular holes 55 and 55 of the both side plates 15 and 15 of the upper arm 13 from the inside, respectively, and the operation member 18 is dropped into the upper arm 13. The engaging pieces 18A and 18A are fitted on the inner ends of the bushes 52 and 52, and engaged with the protrusions 52A and 52A. The member 18 is positioned, the shaft 53 is fitted from the square hole 57 of the inner bush 52, and sequentially inserted into the square hole 58 of the operation member 18 and the square hole 57 of the outer bush 52. In this state, the operation member 18 can be rotated by the bushes 52, 52 via the shaft 53. Further, since the spacer portion 60 of the operation member 18 is fitted between the operation pieces 28 and 28 of the lock fitting 17, the positioning of the lock fitting 17 in the direction of the support shaft 21 is performed. .

  And the structure which attaches the said operation lever 5 to the edge part of the said shaft 53 which penetrated both the said bushes 52 and 52 and the said operation member 18 is demonstrated. First, as shown in FIGS. 7, 9, 10, and 15, the operating lever 5 is a molded product made of synthetic resin, and a cylindrical portion 63 is formed at a base portion of the lever portion 62. A mounting portion 63A is formed in the central portion of the cylindrical portion 63 so as to block the inside, and a square hole 64 is formed in the mounting portion 63A so that the shaft 53 is non-rotatably inserted. A mounting hole 65 penetrating the hole 64 is formed. Further, as shown in FIG. 16, the cap member 54 made of synthetic resin is fitted to both sides of the cylindrical portion 63 of the operation lever 5. The cap member 54 has a cylindrical outer shape, one end surface is a decorative surface 66, and an engaging portion 68 that is non-rotatably fitted into the center hole 67 of the shaft 53 protrudes on the opposite side. The engaging portion 68 is formed with a hole 69 opened in the side surface. Here, a hole 70 opened to the side surface is also formed at the end of the shaft 53.

  The end portion of the shaft 53 is inserted into the square hole 64 of the operation lever 5, the cap member 54 is inserted into the outer portion of the cylindrical portion 63, and the engaging portion 68 is inserted into the center hole of the shaft 53. 67, and then a bolt 71 is inserted from the mounting hole 65 in the outer central portion of the cylindrical portion 63 of the operating lever 5, and passes through the hole 69 of the engaging portion 68 and the hole 70 of the shaft 53 to form a nut (not shown). ) Here, the cap member 54 can be mounted on either the left or right side of the cylindrical portion 63 of the operation lever 5. The decorative surface 66 of the cap member 54 can be displayed with an arrow or the like indicating the rotation direction of the operation lever 5, or can have a visual variation by changing the color of the operation lever 5. A pictogram or a logo may be displayed on the decorative surface 66 of the cap member 54.

  As described above, the upper ends of the leg bodies 1 and 1 are connected by the connecting pipe 9 via the leg connecting members 8 and 8 and integrated to give strength. However, no connecting beam is provided below the support leg 7 of the leg 1 in order to widen the foot space. Further, if the width of the top plate 2 is wide, the central portion may be bent downward. For this reason, a holding member 72 is interposed between the top plate 2 and the connecting tube 9 to prevent the bending. In addition, the position where the holding member 72 is provided may be arbitrary, such as a central portion, and the appropriate number is provided according to the lateral width of the top plate 2.

It is a whole side view in the horizontal attitude | position of the foldable table of this embodiment. It is a side view of the stacking state in the standing posture of a folding table. The mechanism part is shown, (a) is a simplified side view of the locked state in the horizontal posture, and (b) is a simplified side view of the unlocked state in the horizontal posture. It is an expanded sectional view of a mechanism part similarly. It is the fragmentary top view which showed the mechanism part partially fractured | ruptured. FIG. 5 is a partially enlarged plan view showing the mechanism part with a part broken away. It is a disassembled perspective view of a lock mechanism part. It is an expansion disassembled perspective view of a part of lock mechanism part. It is a disassembled perspective view of a rotation mechanism part. It is a fragmentary perspective view of the mechanism part of an assembly state similarly. A leg connection member is shown, (a) is a front view, (b) is a side view. It is a longitudinal cross-sectional view of the state which connected the leg connection member and the connection pipe. A bush is shown, (a) is a front view, (b) is a side view, (c) is a sectional view, and (d) is a sectional view. The operation member is shown, (a) is a front view, (b) is a side view, (c) is a plan view, and (d) is a cross-sectional view. The operation lever is shown, (a) is a front view, (b) is a side view, (c) is a plan view, and (d) is a sectional view. A cap member is shown, (a) is a side view, (b) is a front view, (c) is sectional drawing. It is a perspective view which shows a cover. The top board bending prevention structure is shown, (a) is a longitudinal side view, (b) is a longitudinal front view. It is a disassembled perspective view which shows the example of a two-part closure member. Similarly, the closing member is shown, (a) is a front view of the upper closing member, (b) is a side view of the upper closing member, (c) is a front view of the lower closing member, and (d) is a side view of the lower closing member. is there.

Explanation of symbols

1 leg, 2 top plate,
3 curtains, 4 mechanical parts,
5 Operation lever, 6 Grounding leg,
7 support legs, 8 leg connecting members,
9 Connecting pipe, 10 Cover,
11 Duct, 12 Outlet box,
13 upper arm, 14 fixing plate,
16 Top plate fixing bracket, 17 Lock bracket,
18 operation member, 19 first engaging part,
20 second engaging portion, 21 support shaft,
22 lock pin, 23 long hole,
24 locking part, 25 elastic urging means (kick spring),
26 Lock piece, 27 Shaft hole,
28 operation pieces, 29 first stopper,
30 second stopper, 31 bearing hole,
32 U-shaped opening, 33 notch,
34 sliding ring, 35 closing member,
36 connecting parts, 37 horizontal parts,
38 shaft part, 39 ring part,
40 slits, 41 closing members,
41A Upper closing member, 41B Lower closing member,
42 fitting part, 43 protrusion,
44 through holes, 45 screw holes,
46 fitting holes, 47 holes,
48 connecting plate, 49 screw hole,
50 through holes, 51 bolts,
52 bush, 53 shaft,
54 cap member, 55 circular hole,
56 sleeve part, 57 square hole,
58 square holes, 59 pressing parts,
60 Spacer part, 61 Stop part,
62 lever part, 63 cylindrical part,
63A mounting part, 64 square hole,
65 mounting holes, 66 decorative face,
67 center hole, 68 engaging portion,
69 holes, 70 holes,
71 bolts, 72 holding members.

Claims (2)

  A foldable table with a lock mechanism that connects the upper arms attached to the lower sides of the top plate to the upper ends of the left and right legs so as to be able to rotate up and down, and maintains the top plate in a horizontal posture and a standing posture. The operation lever for operating the lock mechanism provided on the upper arm through the interlocking shaft made of a square pipe non-rotatably and connecting to the end of the shaft is made of a symmetrical plastic resin. A square hole that is a molded product and has a cylindrical portion formed at the base of the lever portion, a mounting portion is formed at the center of the cylindrical portion so as to close the inside, and the shaft is non-rotatably fitted into the mounting portion. The end of the shaft is inserted into the square hole, the cap member is fitted into the opposite cylindrical portion, and the engaging portion protruding from the end of the cap member is inserted into the shaft. In the center hole of the non-rotatable Operating lever device folding table, characterized in that fastened with screws passing through the cylindrical portion and the shaft and the engaging portion. The operating lever device for a folding table according to claim 1, wherein one end surface of the cap member is a decorative surface, and a pictogram or a logo is displayed on the decorative surface.

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