JP6274833B2 - table - Google Patents

Description

  The present invention relates to a table (foldable table) that is provided with a flip-up top plate and can be stacked back and forth.

As an example of a table that can be stacked back and forth when the top plate is flipped up and turned, the applicant of the present application disclosed in Patent Document 1 that the rear end of the top plate is rotatably connected to a leg device, and the front end of the top plate A configuration has been disclosed in which the locking portion is connected to the front end portion of the leg device by a lock device, and the lock is released when a lever provided on the leg device is pushed.

Japanese Patent No. 4442379

  Since the table of Patent Document 1 includes a locking device that holds the top plate in a horizontal position, the top plate can be reliably held in a horizontal position even if spring means for flipping and rotating the top plate is provided. It has the advantage that it is excellent in operability and safety.

  An object of the present invention is to further improve the operability and safety while following the basic configuration of Patent Document 1.

The present invention includes various configurations, examples of which are specified in each claim. Of these, the invention of claim 1
"We have a top plate and a leg device to support it,
The top plate is connected to the leg device so that the front end can be swung up and rotated around its rear portion, while the leg device has left and right front ends positioned at the front end portion of the top plate. It is a form that has legs and can be stacked back and forth by jumping up the top plate,
The top plate is held in a horizontal state by left and right locking devices corresponding to the left and right legs, and the left and right locking devices are fixed locking bodies provided at front end portions of the left and right legs, respectively. And a movable lock body provided at a portion corresponding to the fixed lock body in the front end portion of the top plate ,
In the locked state in which the movable lock body is engaged with the fixed lock body, the top plate is held in a horizontal posture, and in the unlocked state in which the movable lock body is disengaged from the fixed lock body by operation of a lever, The top plate is allowed to flip up and turn,
The left and right levers are provided corresponding to the left and right movable lock bodies, and the left and right levers are disposed on the inner portion sandwiched between the left and right legs of the bottom surface of the front end of the top plate. It is arranged so that a person can pull it forward while placing his thumb against the front edge of the top board.

The invention of claim 2 has the same basic configuration as that of claim 1,
On the bottom surface of the front end of the top plate, the lever of the horizontal rotation system is arranged so that a person can turn and rotate the thumb with the thumb against the front end edge of the top plate,
The lever is arranged in a left-right longitudinal posture extending in parallel with the front edge of the top plate when not being operated by a person, and is biased to the left-right longitudinal posture by a spring, In contrast, the lever can be pulled horizontally and rotated horizontally.

The invention of claim 3 is the invention according to claim 1 or 2,
The front ends of the left and right legs are composed of rod-shaped front legs, and the levers are arranged on the left and right sides corresponding to the front legs. It arrange | positions so that it may rotate around.

  In the present invention, since the lever is arranged on the lower surface of the top plate, when the top plate is flipped up, a person does not take a posture to bend and put his fingertip on the lever while standing normally. Can do. For this reason, it is excellent in workability of the top board flip-up operation.

In other words, since the lever can be pulled and operated with the thumb on the front edge of the top plate, it is easy to apply force to the lever. because it can operate the lever in the state as grabbing, even if provided with a spring means for rotating springing up the top plate, that is excellent in safety can be reliably control the movement of the top plate.

  In addition, the table user's feet may hit the lever from below, but the lever moves horizontally along the bottom surface of the top plate to release the lock, so the lever hits the lever from below. However, the lock is not released and the safety can be improved.

In the invention of claim 3, that have excellent safety for Without levers operations not Deki springing up the top plate. In this case, since the left and right levers are located inside the left and right legs, the person can operate the levers without extending their hands to the left and right leg portions. For this reason, it is excellent in operability.

It is an external view of the table which concerns on embodiment, (A) is the perspective view seen from this side, (B) is the perspective view seen from back. (A) is a separated perspective view, (B) is a perspective view seen from below. (A) is a perspective view in a state where the top plate is flipped up, (B) is a perspective view of a table in a state where a lever is rotated forward, and (C) is a perspective view of a spring unit. (A) (B) is the isolation | separation perspective view of the principal part. (A) is the perspective view which looked at the principal part from this side, (B) is the perspective view of the spring for lever energizing, and (C) is the separation perspective view which looked at the principal part from the back. (A) is a separated perspective view of the locking device as viewed from below, (B) is a partial plan view of the locking device in the locked state, (C) is a separated front view of the locking device, and (D) is (B). It is sectional drawing of the locking device seen from DD viewing direction. An exploded perspective view of the locking device viewed from below with the lever rotated in a free state , (B) a partial plan view of the locking device in a free state, and (C) showing a relationship between the front bracket and the lever. It is a perspective view from the lower part.

(1). Outline of Table Next, an embodiment of the present invention will be described with reference to the drawings. First, the outline of the table will be described with reference to FIGS. The table includes a top plate 1 having a rectangular (rectangular) shape in plan view, a leg device 2 that supports the top plate 1, and a curtain plate 3 disposed on the back of the leg device 2.

The leg device 2, the longitudinal side frame before and after the connecting the rod foot-shaped front leg 4 and Ushiroashi 5 of two by two arranged in a corner portion close of the top plate 1, and a front leg 4 and the rear leg 5 in its upper portion 6, left and right laterally long rear frames (bearing frames) 7 connected to the upper ends of the left and right rear legs 5, and left and right laterally long intermediate frames 8 connected to portions near the rear ends of the left and right side frames 6. .

  By narrowing the left / right distance of the rear leg 5 from the left / right distance of the front leg 4, the table can be stacked back and forth when the top plate 1 is flipped upward and rotated. A metal plate duct plate 9 is fixed to the intermediate frame 8, and the curtain plate 3 is fixed to the duct plate 9. The curtain plate 3 may be fixed to the rear leg 5 with screws or the like.

  Each of the legs 4 and 5 has a hollow circular shape, and includes base portions 4a and 5a and upper members 4b and 5b connected to the upper ends thereof. The side frame 7 is connected to the upper members 4b and 5b of the legs 4 and 5. A caster 10 is provided at the lower end of each leg 4, 5. The side frame 6 has a hollow circular shape and the intermediate frame 9 has a hollow rectangular shape, but any form can be set.

  The top plate 1 projects outward from the left and right sides of the rear frame 7, and a pivot bracket 11 is fixed with screws on the lower surface of the top plate 1 that projects from the left and right outer sides of the rear frame 7. As shown in FIG. 3C, the pivot bracket 11 is formed with a circular boss body 12 that fits into the rear frame 7, and the boss body 12 rotates inside the rear frame 7. Is rotatably attached to the rear frame 7.

  As shown in FIG. 3 (C), a stopper bolt 13 is screwed into the base portion of the boss body 12 from the outside, and the head of the stopper bolt 13 is a long hole (long length in the circumferential direction) provided in the rear frame 7. The rotation angle of the top board 1 is regulated by moving inside the hole).

The boss member 12 of the pivot bracket 11, one end of the torsion bar 1 4 as an example of the spring means is fitted. In the present embodiment, four torsion bars 14 are fitted. Each torsion bar 14 is fitted to the boss body 12 so as not to rotate about its axis. Each torsion bar 14 is fitted into a circular stator 15 disposed inside the rear frame 7, and the stator 15 is fixed to the rear frame 7 with bolts 16.

  Each torsion bar 14 is fitted to the stator 15 in a non-rotatable state around the axis. Then, while the bundle of torsion bars 14 is pre-twisted in the direction indicated by the arrow X in FIG. 3A, the pivot bracket 11 is fixed to the top plate 1 and the stator 15 is attached to the rear frame 7. It is fixed. For this reason, the top plate 1 is urged by the torsion bar 14 in the upward flip-up rotation direction. In the present embodiment, setting is made so that the top plate 1 can be flipped up only by the torsion bar 14. The flip-up rotation posture of the top board 1 can be arbitrarily set, and can be flipped up to a vertical or close posture in a side view.

A front bracket 17 that can be fitted to the upper member 4 b of the front leg 4 is fixed with a bolt at a position on the lower surface of the top plate 1 above the front leg 4. The front bracket 17 is horizontally mounted around the axis of the front leg 4. A rotating unlocking member 18 is attached. The unlocking member 18 includes a lever 26 serving as a finger-hanging portion, and the lever 26 faces inward from the front leg 4 to the left and right sides. As shown in FIG. It is inward from the edge and is in a posture parallel to the front edge of the top plate 1. Further, the left and right levers 26 are arranged in a state of facing each other.

On the other hand, as shown in FIG. 3B, when the left and right levers 26 are pulled so that their front end portions are exposed in front of the top plate 1, the lock is released. As a result, the top board 1 is flipped up and turned as shown in FIG. Since the lever 26 is disposed so as to overlap the lower surface of the top plate 1, the pulling operation of the lever 26 applies the thumb to the front edge 1 a of the top plate 1 from above, and pulls it forward with the index finger, middle finger and ring finger. This can be done stably. In other words, the lever 26 is disposed at a position where a person can pull the lever 26 with the thumb placed on the front edge 1a of the top plate 1.

In this state, the top plate 1 is in a state where its front edge 1a is grasped by a human hand, so that the top plate 1 does not jump up suddenly even if the lock is released, and the movement is controlled. can do. That is, the unlocking and the rotation operation of the top plate 1 can be performed in a series as if the top plate 1 is gripped. For this reason, it is excellent in the braking performance and safety | security of the top plate 1 flip-up rotation. In the section between the left and right front brackets 17, left and right horizontally long reinforcing frames 19 are provided .

  For example, as shown in FIG. 5C, the front bracket 17 is provided with a positioning projection 17a. In this case, the protrusions 17a are provided on the two adjacent side surfaces because the front bracket 17 is shared by the left and right users (therefore, one type of front bracket 17 is sufficient). . The reinforcing frame 19 is for preventing the top plate 1 from being bent, and is fixed to the top plate 1 with bolts or the like, for example. The reinforcing frame 19 may be connected to the protrusion 17a of the front bracket 17 or may not be connected to the front bracket.

(2) Details of Lock Device / Lever Member Next, the lock release member 18 and the lock device will be described with reference to FIG. The front bracket 17 is made of resin (or die-cast aluminum), it is fixed by bolts (not shown) to position the corner portion side of the top plate 1. A bolt insertion hole is denoted by reference numeral 21. As shown in FIG. 5C, the front bracket 17 is provided with a protrusion 22 into which the end of the square reinforcing frame 19 is fitted.

As shown in FIGS. 4 and 5, the front bracket 17 is formed in a substantially square shape in plan view, and a downward tube 23 placed on the upper surface of the front leg 4 is concentric with the front leg 4 at a corner portion facing the corner of the top plate 1. And it is provided in the state of the same diameter. The downward cylinder 23 opens vertically, and the boss portion 24 of the lock release member 18 is fitted into the downward cylinder 23 so as to be rotatable from above.

Unlocking member 18 is made of resin a (a die-cast aluminum may also), provided slightly larger diameter of the flange 25 to the upper end of the boss portion 24 of the unlocking member 18, described above in the flange 25 The lever 26 is integrally formed. In the locked state, the lever 26 has a left-right longitudinal posture extending in parallel with the front end edge 1a of the top plate 1, but a part of the lever 26 is a front bracket as shown in FIG. 5 (C) and FIG. 7 (C). It is in the state where it entered under the front part of 17.

  For example, as can be understood from FIG. 7C, the lower surface of the lever 26 is approximately the same height as the lower surface of the reinforcing frame 19 (therefore, the lever 26 is higher than the upper end of the front leg 4). Is located.) For this reason, even if a person's foot moves toward the lower surface of the top plate 1, it is guarded by the reinforcing frame 19 that the foot hits the lever 26. This is one of the advantages of this embodiment.

As clearly shown in FIG. 4A, a notch 27 in which the flange 25 of the unlocking member 18 is fitted is provided at the corner of the front bracket 17 concentrically with the front leg 4. Is provided with a downward cylinder 23.

As shown in FIG. 5A in particular, a spring receiving protrusion 27a concentric with the downward tube 23 is provided inside the flange 25 of the unlocking member 18, and the spring receiving protrusion 27a is provided around the axis of the coil. A torsion coil spring (torsion coil spring) 28 to be twisted is fitted. An upper end portion 28a of the torsion coil spring 28 extends inwardly in the left and right direction, and a tip end thereof is fitted in a locking groove 29 provided in the front bracket 17, while a lower end portion 28b extends rearward. The rear end is bent downward, and the rear end is fitted in a hole 30 provided in the unlocking member 18. As described above, since the front bracket 17 is shared by the left and right users, two locking grooves 29 are also provided on the left and right.

The torsion coil spring 28 is configured to advance clockwise in a plan view. For this reason, the lock release member 18 is urged by the torsion coil spring 28 to a locked posture such that the lever 26 approaches the front bracket 17. Note that various spring bodies such as a coil-type compression spring, a tension spring, or a leaf spring can be used as the spring for urging the unlocking member 18 to the locked posture (rubber can also be used).

As clearly shown in FIG. 4, the boss portion 24 of the unlocking member 18 is provided with a circular and downward guide projection 31, and a lock device holding hole opened substantially rearward in a portion including the guide projection 31. 32 is free. The lock device holding hole 32 has a cross shape when viewed from the back, and penetrates also below the guide protrusion 31. The lock device holding hole 32 is fitted with a movable lock body 33 constituting the lock device and a leaf spring 34 fixed thereto.

The movable lock body 33 has a claw shape having a flange portion 33 a protruding toward the front, and the flange portion 33 a is located at the position of the guide protrusion 33. Further, the upper end portion of the movable lock body 33 is a left and right long slide guide portion 33b that is slidably fitted into the horizontally long portion 32a of the lock device holding hole 32, and a leaf spring is provided on the back surface of the movable lock body 33. 34 is fixed. The leaf spring 24 has a shape that is long in the vertical direction, and its upper end is fixed to the front inner surface of the lock device holding hole 32 with a screw 35.

Therefore, the movable lock body 33 can move in the front-rear direction by elastically deforming the leaf spring 34. When the leaf spring 34 is not elastically deformed, the flange portion 33a of the movable lock body 33 is exposed to the outside of the guide protrusion 31. When the leaf spring 34 is bent and deformed, the flange portion 33a is brought into the guide protrusion 31. Can retreat. The lower surface of the flange portion 33a in the movable lock body 33 is an inclined surface that goes upward as the distance from the axial center increases.

A lock receiving cylinder 36 constituting a fixed lock body of the lock device is fixed to the upper member 4b of the front leg 4 by fitting from above. The lock receiving cylinder 36 is made of resin or aluminum die-cast, and has a large number of fins (annular ribs) on the outer periphery. Further, an outward flange 36a that overlaps with an upper end of the upper member 4b in the front leg 4 and an inward flange 36b that protrudes inward from the inner peripheral surface of the upper member 4b are formed at the upper end of the lock receiving cylinder 36. A notch groove 37 is formed at the front end portion of the inward flange 36b so that the flange portion 33a of the movable lock body 33 can be fitted and removed vertically.

Then, the positional relationship between the flange 33a of the movable lock body 33 and the notch groove 37 of the lock receiving cylinder 36 is shown in FIG. 6 (when the lock release member 18 is held in the locked position by the torsion coil spring 28. As shown in B), the flange 33a is located slightly off the notch groove 37, the flange 33a is below the inward flange 36b, and the lever 26 is twisted to the front against the coil spring 28. In the rotated free state , the collar portion 33a is set so as to be positioned at the notch groove 37 as shown in FIG.

Therefore, when the unlocking member 18 is in the locked posture, the top plate 1 is held up so as not to be turned up by the hook 33a being hooked on the inward flange 36b, and the unlocking member 18 is brought into the free posture. When it is rotated, the collar portion 33a comes out of the lock receiving cylinder 36, and the top board 1 is flipped up and rotated by the torsion bar 14 into an inclined posture as shown in FIG.

  In this case, if the left and right levers 26 are not unlocked at the same time, the top plate 1 will not jump up, and the lever 26 can be operated while holding the top plate 1 as described above. Can be secured.

As a means for restricting the rotation range of the lever 26, as shown in FIG. 4, a concave groove 38 is provided in the upper inner peripheral surface of the downward cylinder 23 of the front bracket 17, while the boss portion 24 of the lock release member 18 is provided on the boss portion 24. A stopper projection 39 that enters the inside of the concave groove 38 is provided, and the rotation range of the lever 26 is restricted by the stopper projection 39 coming into contact with the left and right inner surfaces of the concave groove 38. The lever 26 is entirely hidden under the top plate 1 in the locked posture, and a corresponding portion of the lever 26 protrudes in front of the top plate 1 in the unlocked posture (in the free posture). Accordingly, a person can easily pull the lever 26 by simply touching the front edge 1 a of the top board 1 with his / her hand.

When the hand is released from the lever 26, the lever 26 returns to the locked position by the torsion coil spring 28, whereby the movable lock body 33 also returns to the locked position. In this state, when the top plate 1 is tilted horizontally, the flange portion 33a of the movable lock body 33 hits the edge of the inward flange 36b of the lock receiving cylinder 36 and once retracts against the elasticity of the leaf spring 34. Is engaged with the inward flange 36b from below.

The spring body that urges the movable lock body 33 to the locked posture is not limited to the leaf spring as in the embodiment, and various members such as a coil spring and rubber can be used. In addition, the specific structure of the movable lock body 33 is not limited to the embodiment, and various structures such as a method in which the movable lock body moves backward from the engaging portion of the front leg 4 by the rotation of the lever 26 are employed. it can.

(3). Others The present invention can be embodied in various ways other than the above embodiment. For example, in the embodiment, the lever 26 is provided at the position of the front leg 4, but the lever 26 may be disposed closer to the left and right inner sides than the front leg 4. In this case, interlocking means for interlocking the lock device and the lever provided in the front leg 4 may be provided. Providing the interlocking means in this way has an advantage that the top plate 1 can be easily flipped up by one person even if the left and right width of the top plate 1 is not long enough for human hands to reach.

In the above embodiment, the movable lock body 33 returns to the locked posture when the hand is released from the lever 26. However, the lever 26 can be held in the free posture by an engaging means such as a ball catch. In this case, by releasing the lock of one front leg 4 and then releasing the lock of the other front leg 4, even if the table has a large left and right width, one person can jump the top plate 1. Can be raised. In this case, it is preferable to set so that the lever 26 returns (resets) when the top board 1 jumps up.

In addition, when a spring-type intermediate member is disposed between the lock release member 18 and the movable lock body 33 and the lever 26 is once rotated in a free manner, the lock of the movable lock body is released, but the lever 26 is It is also possible to set to return to the locked posture. Also in this case, it is preferable to set the movable lock body 33 so as to return to the locked posture when the top plate 1 jumps up.

  The leg device only needs to be stackable, and the specific structure can be arbitrarily set. Therefore, it is possible to configure the left and right legs in a plate shape instead of the bar foot system as in the embodiment. The lever 26 can also be provided on the leg device.

  The present invention can be embodied in a table. Therefore, it can be used industrially.

DESCRIPTION OF SYMBOLS 1 Top plate 2 Leg apparatus 4 Front leg 4b, 5b Upper member 5 Rear leg 7 Rear frame (rotating spindle)
14 Torsion bar as an example of spring means for springing up 17 Front bracket 18 Lock releasing member 23 Downward cylinder 24 Boss part 26 Lever 28 Torsion coil spring for returning lever member 32 Locking device holding hole 33 Movable lock body 33b Gutter part 34 Leaf spring constituting the locking device 36 Lock receiving cylinder 36b constituting the fixed lock body of the locking device Inward flange 37 Notch groove

Claims (3)

It has a top plate and leg devices that support it,
The top plate is connected to the leg device so that the front end can be swung up and rotated around its rear portion, while the leg device has left and right front ends positioned at the front end portion of the top plate. It is a form that has legs and can be stacked back and forth by jumping up the top plate,
The top plate is held in a horizontal state by left and right locking devices corresponding to the left and right legs, and the left and right locking devices are fixed locking bodies provided at front end portions of the left and right legs, respectively. And a movable lock body provided at a portion corresponding to the fixed lock body in the front end portion of the top plate ,
In the locked state in which the movable lock body is engaged with the fixed lock body, the top plate is held in a horizontal posture, and in the unlocked state in which the movable lock body is disengaged from the fixed lock body by operation of a lever, The top plate is allowed to flip up and turn,
The left and right levers are provided corresponding to the left and right movable lock bodies, and the left and right levers are disposed on the inner portion sandwiched between the left and right legs of the bottom surface of the front end of the top plate. It is arranged so that a person can pull it toward you with your thumb on the front edge of the top board.
table. It has a top plate and leg devices that support it,
The top plate is connected to the leg device so that the front end can be swung up and rotated around its rear portion, while the leg device has left and right front ends positioned at the front end portion of the top plate. It is a form that has legs and can be stacked back and forth by jumping up the top plate,
The top plate is held in a horizontal state by left and right locking devices corresponding to the left and right legs, and the left and right locking devices are fixed locking bodies provided at front end portions of the left and right legs, respectively. And a movable lock body provided at a portion corresponding to the fixed lock body in the front end portion of the top plate ,
In the locked state in which the movable lock body is engaged with the fixed lock body, the top plate is held in a horizontal posture, and in the unlocked state in which the movable lock body is disengaged from the fixed lock body by operation of a lever, The top plate is allowed to flip up and turn,
On the bottom surface of the front end of the top plate, the lever of the horizontal rotation system is arranged so that a person can turn and rotate the thumb with the thumb against the front end edge of the top plate,
The lever is arranged in a left and right longitudinal posture that extends in parallel with the front edge of the top plate when not being operated by a person, and is biased to the left and right longitudinal posture by a spring. It is designed to be able to rotate horizontally by pulling the lever toward you.
table. The front ends of the left and right legs are composed of rod-shaped front legs, and the levers are arranged on the left and right corresponding to the front legs,
The left and right levers are arranged so as to rotate about the axis of the front leg by a pulling operation,
The table according to claim 1 or 2.

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