JPH08131263A - Vertically movable table - Google Patents

Abstract

PURPOSE: To enhance controllability and safety by unlocking a weight balancing device according to a vertical moving lever rotatably provided near the edge of a top. CONSTITUTION: A lid 31 is opened and a vertical moving lever 16 is turned to a vertically movable position. An eccentric cam 17 is thereby rotated with its center moving downward, pushing in the unlock pin 406 of a damper downward to undo a lock. After a top 15 has been moved to a desired height position the vertical moving lever 16 is returned to a vertical moving lock position by rotation through 180 degrees and pushed in toward the center of the top 15. With the rotation of the eccentric cam 17, the pressure of nitrogen gas in the damper pushes up the unlock pin 406 and the damper is re-locked, so that the top 15 is held in position. Since the raising lever 16 can be controlled near the edge of the top 15, controllability is enhanced. Lock/free positions are indicated on both the front and back of the grip 16a of the vertical moving lever 16 to facilitate seeing whether or not the lock is undone, so that safety can be enhanced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevating table which supports a top plate by a single elevating leg from the center of a pit provided on a floor so that its top position can be adjusted.

[0002]

2. Description of the Related Art Conventionally, such as a digging and kotatsu 1 shown in FIG.
An elevating table 1 of a main leg elevating type is known. An elevating table 1 shown in the figure supports a top plate 5 from the center of a pit 3 provided on a floor 2 by a single elevating leg 4 so that its height position can be adjusted. Used for arranging heating appliances such as electronic carpets.

An elevating lever 6 for adjusting the height position of the top plate 5 is provided above the elevating leg 4, and a gas damper is arranged inside the elevating leg 4.

Here, this gas damper is shown in FIGS.
This will be described with reference to 0. The gas damper 40 fixes the height of the top plate 5 in the locked state, and supports the top plate 5 with a force equivalent to the weight of the top plate 5 in the unlocked state, and also supports the top plate 5 with a light operating force. As shown in FIG. 8, a piston 402 that has a cylindrical piston rod 400 that is exposed to the outside and that moves in the cylinder 401, and the piston 402 and the cylinder 40, are provided to enable lifting and lowering.
Free piston 4 arranged between the bottom part 401a
03, and oil 404 on both sides of the piston 402,
404 is stored and cylinder 4 from free piston 403
A lock release pin 406 that stores nitrogen gas 405 on the bottom 401a side of 01 and opens and closes an orifice hole 402a penetrating the piston 402 is slidably arranged in the cylinder of the piston rod 400. FIG. 8 shows the orifice hole 4
02a shows a lock state in which the lock release pin 406 is closed. In this lock state, the lock release pin 406 is pushed toward the cylinder 401 side as shown in FIG. 402a is opened and the locked state is released. When a constant pushing force is applied to the piston rod 400 in the released state, the piston rod 4
00 shrinks. At this time, when the lock release pin 406 is released, the orifice hole 402a is closed by the gas pressure of the nitrogen gas 405 as shown in FIG. 10, and the locked state is automatically restored again.

Next, the operation of the conventional lifting lever 6 is shown in FIG.
It will be described with reference to FIGS. 12 to 14 are views showing a locked state of the gas damper 40, and FIGS. 15 to 1
7 is a diagram showing the unlocked state.

As shown in FIG. 14, the elevating lever 6 is formed by bending an L-shaped rod member, and a cylindrical eccentric cam 7 is attached to the longer member. The lifting lever 6 is shown in FIG.
14, the eccentric cam 7 is in a state in which the lock release pin 406 is not pushed in the state of being in the vertical lift lock position (right horizontal position) A, so that the gas damper 40 is in the lock state. ing.

When the elevating lever 6 is turned to the vertically ascending / descending position (left horizontal position) B as shown in FIGS. 15 to 17, the eccentric cam 7 is unlocked by the unlocking pin as shown in FIGS. By pushing 406, the gas damper 40 is unlocked. In this unlocked state, the user can hold the peripheral edge of the top plate 5 by hand and change the height position of the top plate 5 with a light operating force. When the lift lever 6 is returned to the vertical lift lock position (right horizontal position) A as shown in FIGS. 12 to 14 at the desired height of the top plate 5, the gas damper 40 is locked again and the top plate 5 is locked. The height position is fixed.

[0008]

However, since the elevating lever 6 is always hidden under the top plate 5, whether the user is normally sitting at the edge of the pit 3 is currently locked or not. Since it is difficult to know whether the lock is released, for example, there is a high risk that a person may get on the top 5 and fall out of the top 5 without knowing that the lock is released, resulting in injury. Further, since the elevating lever 6 is hidden under the top plate 5, it has to be bent in order to be operated, which makes it difficult to operate. Further, there is a problem that the lift lever 6 is caught on the knee.

Therefore, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lifting table which is improved in operability and safety.

[0010]

The lifting table according to claim 1 is a lifting table in which a top plate is supported from the center of a pit provided on the floor by a lifting leg using a weight balancing device so that the top position can be adjusted in height. A lift lever rotatably provided in the vicinity of the peripheral edge of the top plate, and a lock release mechanism for locking or unlocking the weight balance device based on the rotating operation of the lift lever. It is what

In the lifting table according to a second aspect of the present invention, the height of the top plate can be adjusted by the lifting legs using the weight balance device that is unlocked by pushing the lock release pin from the center of the pit provided on the floor. In a supporting lift table, a lift lever that is retractable and rotatable near the peripheral edge of the top plate, and an eccentric cam that is provided at the tip of the lift lever that locks and unlocks the lock release pin by rotating the lift lever. It is characterized by having.

A lifting table according to a third aspect is characterized in that the top plate can be stored in the pit.

[0013]

According to the lifting table of the first aspect, when the lifting lever is rotated, the lock release mechanism brings the weight balance device into the unlocked state or the locked state. As a result, the elevating lever can be operated in the vicinity of the periphery of the top plate, so that the operability is improved, and the state of the weight balance device can be easily known by the rotating state of the elevating lever, thus improving safety.

According to the lifting table of the second aspect, when operating the lifting lever, the lifting lever is pulled out. When the lifting lever is rotated in the direction in which the eccentric cam pushes the lock release pin, the locked state of the weight balance device is released. After adjusting the top position of the top plate in this unlocked state, rotate the elevating lever in the direction in which the lock release pin protrudes, and the lock release pin protrudes to lock the weight balance device and fix the top plate. It After adjusting the height of the top plate, push in the lift lever. As a result, the elevating lever can be operated in the vicinity of the peripheral edge of the top plate, so that the operability is improved, and the state of the weight balance device can be known from the rotating state of the elevating lever, thus improving the safety. If you do not use the lift lever, push the lift lever out of the way.

According to the lifting table of claim 3, since the lifting lever is rotatably provided near the periphery of the top plate, the locked state can be released even when the top plate is housed in the pit. Since this is possible, the room with this table can be used in multiple ways. In addition, by pushing the lift lever, it becomes easy to store the top plate in the pit.

[0016]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a sectional view showing an embodiment of the lifting table of the present invention.

This lifting table 10 is in the unlocked state by pushing the lock release pin 406 from the center of the pit 3 provided on the floor 2, and the lifting leg 14 using the gas damper 40 as the conventional weight balance device. And a lift lever 16 rotatably provided near the peripheral edge of the top plate 15 for supporting the top plate 15 in a height position adjustable manner.
The gas damper 40 is provided with an eccentric cam 17 as a lock release mechanism that brings the gas damper 40 into a lock release state or a lock state based on the rotating operation of the elevating lever 16.
As in the conventional case, a heating device such as an electronic carpet is arranged in the pit 3 and used.

The top plate 15 comprises a lower top plate 150 fixed to the elevating legs 14 and an upper top plate 151 detachably mounted on the lower top plate 150. The upper top plate 151 has a material similar to that of the floor 2 such as a tatami mat attached to the front surface, and a decorative plate attached to the back surface so that the front surface faces upward in the stored state and the back surface faces upward in the used state. When the top plate 15 is in the housed state, the pit 3
3 of the frame 30 having an L-shaped cross section provided around the opening of the
It is sized to fit into 0a. Also, frame 3
0 is the lift lever 16 when the top plate 15 is stored.
Is provided, and a lid 31 is provided on the upper portion of the recess 30b.

The elevating leg 14 is provided with a cylindrical fixed leg 140 standing upright in the center of the pit 3 and a fixed arm 141 for fixing the lower top plate 150 on the upper part.
And a movable leg 143 in the shape of a rectangular tube supported by a bearing 142 so as to be movable in the vertical direction, and the gas damper 40 is coaxially erected in a recess 32 provided in the center of the pit 3. The plate 15 can be stored in the pit 3 until the upper top plate 151 and the floor 2 are flush with each other.

The elevating lever 16 is formed by bending a rod member into an L-shape, the shorter one of which is a grip portion 16a and the longer one of which is a connecting portion 16b. The columnar eccentric cam 17 is attached to the connecting portion 16b so that the lock releasing pin 406 of the gas damper 40 appears and disappears by the turning operation of the elevating lever 16. Also, the lifting lever 16
On the upper and lower surfaces of the grip portion 16a, there are lock / free indications such as "lock" indicating that they are in a locked state and "up and down" indicating that they can be moved up and down.
2 is in the vertical lift lock position A ', as shown in FIG. 2, and the lock lever 16 is in the vertical lift position B'as shown in FIG. Are visible from above.

Next, the operation of this embodiment will be described with reference to FIGS. 4 to 7.

With the top plate 15 stored, as shown in FIGS. 1 and 4, the top plate 15 is completely stored in the pit 3,
The grip portion 16a of the elevating lever 16 is at the vertical elevating / lowering lock position A ′, the center of the eccentric cam 17 is at the upper side, and the unlock pin 406 is moved by the gas pressure of the nitrogen gas 405 in the gas damper 40. The damper 40 is pushed up and is in the locked state.

Here, in order to pull out and raise the top plate 15, first, as shown in FIG. 5, the lid 31 is opened and the elevating lever 16 is turned to the vertically movable position B '. Then, the eccentric cam 17 rotates, the center of the eccentric cam 17 moves downward, the lock release pin 406 of the damper 40 is pushed downward, and the damper 40 is unlocked. Then, while holding the lift lever 16 in the vertical liftable position B ′, hold the grip portion 16a of the lift lever 16,
As shown in, the top plate 15 is pulled out and raised.

Next, in order to adjust the height of the top plate 15, after holding the peripheral portion of the top plate 15 or the grip portion 16a of the elevating lever 16 and moving the top plate 15 to a desired height position, as shown in FIG. As shown in FIG. 5, the elevating lever 16 is rotated 180 degrees to return to the vertical elevating lock position A ′, and the elevating lever 16 is pushed toward the center of the top plate 15. The damper 4 is rotated by the rotation of the eccentric cam 17.
The gas pressure of the nitrogen gas 405 in 0 is the lock release pin 406.
, The damper 40 is locked again, and the top plate 15 is fixed. In this way, the height position of the top plate 15 is adjusted.

According to the present embodiment as described above, since the elevating lever 16 can be operated near the peripheral edge of the top plate 15, it is not necessary to bend and operate as in the conventional case, so that the operability is improved. Moreover, since the lock release operation, the height adjustment of the top plate 15 and the lock operation can be performed with one hand, the operability is further improved. In addition, lock / free display allows gas damper 4
Since it is easy to know whether 0 is currently in the locked state or the unlocked state, it is less likely that a person carelessly gets on the top plate 15 and is injured in the unlocked state, and the safety is improved. Can be achieved. In addition, the top plate 15 is placed in the pit 3
Since it can be stored inside, the room in which the main lifting table 10 is installed can be used in multiple ways, and by pushing the lifting lever 16, the top plate 15 can be easily stored in the pit 3. Moreover, since there is nothing protruding from the upper part of the elevating leg 14 unlike the conventional case, it is not caught on the knee and is easy to use. Further, since the eccentric cam 17 is rotated by the turning operation of the elevating lever 16 so that the lock release pin 406 appears and disappears, the lock release mechanism can be simplified.

In this embodiment, the case where the gas damper is used as the weight balance device has been described, but another type such as a spring type may be used. Further, in the present embodiment, the lock / free display is displayed on the elevating lever 16, but it may be displayed on the top plate 15 side.

[0028]

According to the present invention described in detail above, the following effects can be obtained.

According to the first aspect of the present invention, the lifting lever can be operated near the periphery of the top plate, and the state of the weight balance device can be easily known by the rotating state of the lifting lever, so that the operability and safety are improved. It is possible to provide a lifting table aiming at the above.

According to the second aspect of the present invention, as in the first aspect, the operability and the safety can be improved, and when the elevating lever is not used, the elevating lever is pushed to raise and lower. You can prevent the lever from getting in the way.

According to the third aspect of the invention, since the top plate can be stored in the pit, the room in which the table is installed can be used in multiple ways.

[Brief description of drawings]

FIG. 1 is a sectional view of the present embodiment.

FIG. 2 is a perspective view showing an elevating lever of this embodiment.

FIG. 3 is a perspective view showing an elevating lever of this embodiment.

FIG. 4 is a perspective view showing a stored state of the present embodiment.

FIG. 5 is a perspective view for explaining the operation of the present embodiment.

FIG. 6 is a perspective view for explaining the operation of this embodiment.

FIG. 7 is a perspective view for explaining the operation of the present embodiment.

FIG. 8 is a sectional view showing a locked state of the gas damper.

FIG. 9 is a sectional view showing an unlocked state of the gas damper.

FIG. 10 is a sectional view showing a locked state of the gas damper.

FIG. 11 is a perspective view of a conventional example.

FIG. 12 is a perspective view showing a locked state of a conventional example.

FIG. 13 is a cross-sectional view showing a locked state of a conventional example.

FIG. 14 is a perspective view showing a conventional eccentric cam in a locked state.

FIG. 15 is a perspective view showing an unlocked state of a conventional example.

FIG. 16 is a cross-sectional view showing an unlocked state of a conventional example.

FIG. 17 is a perspective view showing a conventional example of an eccentric cam in an unlocked state.

[Explanation of symbols]

 2 Floor 3 Pit 10 Lifting table 14 Lifting leg 15 Top plate 16 Lifting lever 17 Eccentric cam (lock release mechanism) 40 Gas damper (weight balance device) 406 Lock release pin

Claims (3)

[Claims] 1. An elevating table that supports a top plate from the center of a pit provided on the floor so that the height position of the top plate can be adjusted by an elevating leg using a weight balance device, and is rotatably provided near the periphery of the top plate. An elevating table, comprising: an elevating lever; and a lock releasing mechanism that brings the weight balance device into an unlocked state or a locked state based on a rotating operation of the elevating lever. 2. An elevating table for supporting a top plate in a height position adjustable manner by an elevating leg using a weight balance device that is unlocked by pushing an unlocking pin from the center of a pit provided on the floor. It has an elevating lever erected and rotatably provided in the vicinity of the peripheral edge of the top plate, and an eccentric cam which is provided on the tip end side of the elevating lever and which causes the lock release pin to appear and disappear by the rotating operation of the elevating lever. Lift table. 3. The lifting table according to claim 1 or 2, wherein the top plate can be stored in the pit.