JP2002180659A - Simple vertical drive type stage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easy simple drive type stage allowing easy vertical movement operation by one person. SOLUTION: This simple vertical drive type stage 1 has a means transmitting rotary motion of an automatic rotation operation tool such as a hand-held electric drill/electric screwdriver or the like to an operation head part 3c inside an operation box 3f from an operation hole 1c formed in the stage 1 end part through a rotation transmission tool, transmitting the rotary motion to a shaft 3 inside the vicinity of a short direction edge through a worm gear 3b, and transmitting the rotary motion to both longitudinal screw rod members 2 inside the vicinity of both long direction edges respectively through a pair of miters 2e and a pair of miters 3e to convert the rotation of the screw rod members 2 into symmetric movement of both slide base parts 2a oppositely facing to a longitudinal direction center installed to a pair of side legs 4. Thereby, the stage 1 can be easily set to a prescribed level by one person.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple lifting drive stage which can be easily lifted and lowered by one person.

[0002]

2. Description of the Related Art A conventional lifting stage is operated by at least two people to manually raise and lower each leg or a pair of legs on both sides to set a predetermined height using a step lock mechanism. There was a manual lifting stage.

[0003] A conventional lifting stage includes a lifting power drive stage in which a pair of legs on both sides is raised and lowered by power such as a motor or hydraulic pressure.

[0004]

The prior art manual elevating type stage is manually lifted and lowered, so it is not suitable for a weak woman or an elderly person, and requires at least two persons to operate in pairs. Since it is operated by two people from both sides, if one side is a wall or the like, operation and installation is impossible, and there is the complexity of having to operate the lock mechanism every time the height is adjusted. If an operation failure occurs or an erroneous operation is performed, there is a problem that the stage may fall at a stretch and safety deficiencies may occur.

[0005] The lifting power drive type stage of the prior art requires a large lifting power device and is expensive, and it is necessary to equip each stage with the lifting power device.
There has been a problem that the power unit becomes complicated and heavy, causing inconvenience.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a simple elevation drive type stage according to the present invention uses a rotary motion from an automatic rotary operation tool such as a hand-held electric drill or electric driver common to each stage. Through the rotation transmission tool,
Transmission to the operation head through the operation holes provided at the end of each stage,
The rotational motion is transmitted to the shaft inside the vicinity of the short side edge via the worm gear, and further transmitted to the rotation of both the vertical threaded bar members inside the both sides near the longitudinal direction via a pair of miter. The stage can be easily set to a predetermined height by a person alone by means for converting into a symmetrical movement of each of the sliding bases attached to the pair of both legs facing the center in the longitudinal direction.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A simple elevation drive type stage according to the present invention is used for mounting and fixing a rectangular plate material stage, which is used for various purposes such as a stage and a scaffold, along the inside of the vicinity of both longitudinal edges of an upper frame member. A pair of vertical threaded rod members are rotatably disposed, and are axially attached to the vicinity of both ends and a central portion of the vertical threaded rod member using bearings. The rotational direction of the screw groove is symmetrical to the reverse threaded portion in the other reverse screw groove rotational direction, and a pair of sliding nuts sliding symmetrically are loosely fitted to the vertical threaded rod member, and each of the sliding nuts is connected to the upper frame. It is fixed to a sliding base provided with a plurality of slidable sliding bearings supported inside the member, and slidably symmetrically with respect to a longitudinal center by rotation of the vertical screw bar member, and a short side of at least one of the upper frame member. Along the inside near the hand edge, The shaft is rotatably mounted and arranged using bearings, and at the intersections of the shaft and the ends of the vertical threaded rod members at both ends, a cross play of a horizontal shaft miter and a vertical shaft miter, which are bevel gears, are used. A mechanism for converting each rotational motion into a right angle is provided. An operation box is provided in the middle of the shaft.
A worm wheel is fixed to the shaft of the operation box, and a worm gear, which is loosely fitted at right angles to the worm wheel, is rotatably mounted on the shaft inside the operation box in a vertical direction using a bearing. At the upper end of the worm gear, an operating head that can be connected to an automatic rotating operating tool such as an electric drill or electric screwdriver that can switch between forward and reverse rotations is provided.
Opposed to the operation head, the stage has an operation hole having a hole diameter into which the tip of the automatic rotation operation tool can be inserted, while a lower portion corresponding to the upper frame member has a rectangular shape. The lower frame member is disposed, and the lower frame member is rotatably mounted in the longitudinal direction from both ends in the longitudinal direction. The other ends of the legs respectively correspond to the lower ends of the sliding bases. Dress up,
The other end of each leg support member, one end of which is pivoted in the vicinity of the middle of each leg, is pivotally attached to a support base provided at the lower end in the longitudinal direction of the upper frame member, and is opposed to each other in the transverse direction. Between the center portions of the leg portions, a horizontal leg holding member is laid horizontally to hold and reinforce each other.

The method of using the simple lifting / lowering drive type stage of the present invention is to use a rotary motion from an automatic rotary operation tool such as an electric drill or an electric screwdriver which is common to each stage and which can be switched between forward and reverse rotations of a commercially available hand-held type. , Through a rotation transmission tool, such as a hexagon wrench insertion, to an operating head having a recess into which the hexagon wrench can be inserted, and to transmit the rotational movement to a shaft via a worm gear; Further, by transmitting the rotation of both vertical threaded rod members via each pair of miter and converting to the symmetrical movement of each sliding base facing the center in the longitudinal direction, the stage can be easily lifted to a predetermined height by one person. Can be set to

In the simple elevation drive type stage of the present invention, the operation hole for setting the stage at a predetermined height is provided at the end of the stage, so that the operation can be easily performed by one person from one side and the other side can be operated. It can be operated on a wall or in a situation where three sides are surrounded by a wall, or in extreme cases, can be operated while riding on the stage. By doing so, the storage state can be achieved.

In the simple lifting drive stage of the present invention, the worm wheel fixed to the shaft is held by the worm gear. Therefore, if the two axes are at right angles to each other and the twist angle is small, reverse rotation is impossible. Since it has the function, it has the function of maintaining the full weight load of the stage at any position of the worm gear, and the height can be adjusted steplessly.

[0011] The simple lifting drive stage of the present invention is used by submerging it in a storage tank such as a pool. When the water depth from the water surface to the stage is changed, or when not used, the upper edge of the storage tank and the stage are connected. It can be the same height.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings of the embodiment of the present invention, FIG.
(A) when the maximum height of the simple lifting drive stage is used
FIG. 3 is a front view of a partially-mounted portion, and FIG. FIG. 2 is a partially omitted plan view of the simple lifting drive type stage with only the stage removed. FIG. 3 is a partially cut-away enlarged side view of a simple lifting drive stage in a lifting operation state. FIG. 4 is a front view showing a partially lifted state of the elevation stage of the simple elevation drive type stage, and FIG.
(B) is a partially-mounted front view of the minimum height stored state.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below. As shown in FIGS. 1 and 2, a simple elevation drive type stage mounts and fixes a stage (1) of a rectangular plate material used for a multipurpose purpose such as a stage and a scaffold. A pair of vertical threaded rod members (2) are rotatably disposed along the vicinity of both longitudinal edges of the upper frame member (1a), and bearings are provided near both ends and a central portion of the vertical threaded rod member. 2d), the direction of rotation of the thread groove of one threaded portion (2f) with respect to the center in the longitudinal direction of the vertical threaded bar member is the same as the direction of the reverse threaded portion (2g) of the other reverse thread groove. A pair of sliding nuts (2b) which are symmetrical and slide symmetrically are loosely fitted to the vertical threaded bar member, and each of the sliding nuts is provided with a plurality of slidable sliding bearings (2c) supported inside the upper frame member. It is fixed to the equipped sliding base (2a), Accordingly, slides symmetrically to the longitudinal center, and along at least one lateral direction near the edge inside of the upper frame member, a shaft (3) bearing (3d)
The shaft is rotatably mounted on the shaft, and at the intersection of the shaft and the ends of the vertical threaded rod members at both ends, the intersection of the horizontal axis miter (3e) and the vertical axis miter (2e), which are bevel gears, respectively. A mechanism for converting each rotational motion into a right angle by using a loose fit. An operation box (3f) is provided at an intermediate portion of the shaft.
A worm wheel (3a) is attached to the shaft of the operation box.
And a worm gear (3b), which is loosely fitted at right angles to the worm wheel at right angles, is rotatably mounted on a shaft (3d) in a vertical direction inside the operation box using a bearing (3d). As shown in FIG. 3, the upper end of the worm gear can be connected to an automatic rotating operation tool (6) such as an electric drill or an electric screwdriver that can switch between forward and reverse rotations. For example, a hexagon wrench can be inserted. An operation head (3c) having a recess is provided, and an operation hole (1c) having a hole diameter into which the tip of the automatic rotary operation tool can be inserted is provided on the stage facing the operation head. On the other hand, a rectangular lower frame member (5) is provided at a lower portion corresponding to the upper frame member, and is rotatably mounted along the longitudinal direction from both longitudinal ends of the lower frame member. The other end of each leg is pivotally attached to the corresponding lower end of the sliding base. Was axially mounted at one end to near the middle of the leg,
The other end of each leg support member (4a) is pivotally attached to a support base (1b) provided at the lower end in the longitudinal direction of the upper frame member, and is located between the center portions of the leg portions facing in the lateral direction. Are constructed by respectively supporting and reinforcing the lateral leg holding members (4b), and rotating the automatic rotation operating tool through the worm gear.
To the shaft, and further to the rotation of the vertical threaded rod members,
The stage can be set to a predetermined height by transmitting the force via each pair of the miter and converting the movement into a symmetrical movement of each of the sliding bases facing the center in the longitudinal direction.

FIG. 4 is a schematic view showing a simple elevation drive type stage according to the present invention.
As shown in the figure, the stage (1) can be set at a predetermined height by rotating the operation head (3c) using the automatic rotation operation tool (6), and the height can be set to the minimum, thereby storing the stage (1). It can be.

In the simple lifting drive type stage of the present invention, the dimension of the rectangular plate stage (1) is 2
m, horizontal length: 1 m, maximum height: 80 cm, and minimum height: 20 cm.

[0016]

The present invention is embodied in the form described above and has the following effects.

[0017] The simple lifting drive type stage of the present invention controls the rotational motion from a commercially available automatic rotary operation tool common to each stage.
By transmitting the rotational movement to the operation head and converting the rotational movement into a symmetrical movement of each of the sliding bases facing the center in the longitudinal direction, there is an effect that the stage can be easily set to a predetermined height by one person.

Since the operation hole for setting the stage at a predetermined height is provided at the end of the stage, the simple elevation drive type stage of the present invention can be easily moved up and down by one person from one side, and one side can be operated. It can be operated on a wall or in a situation where three sides are surrounded by a wall, or in extreme cases, can be operated while riding on the stage. By doing so, there is an effect that the storage state can be achieved.

Since the worm wheel fixed to the shaft is held by the worm gear, the simple lifting / lowering drive stage of the present invention has a non-reversible action. It has the effect of maintaining the total weight load of the stage, and has the effect of adjusting the height steplessly.

The simple lifting drive type stage according to the present invention can easily set the stage at a predetermined height by one person using an automatic rotating operation tool common to each stage, so that the stage can be operated even for a woman or an elderly person with weak physical strength. It does not require a lock mechanism, so there is no risk of the stage dropping at once due to malfunction.
It has the effect of being able to operate safely.

The simple lifting drive stage of the present invention has the effect that each stage does not have a unique lifting power device, so that the device can be simplified, the cost can be reduced, and the weight can be reduced.

[Brief description of the drawings]

1A and 1B are front views of a partially-mounted portion and a side view of a partially-mounted portion of the simplified elevation drive-type stage according to an embodiment of the present invention, respectively.

FIG. 2 is a plan view of a simplified lifting drive type stage according to an embodiment of the present invention, in which only the stage is partially removed.

FIG. 3 is an enlarged side view showing a part of the simple lifting drive stage in a lifting operation state according to an embodiment of the present invention.

FIGS. 4A and 4B are front elevational views of an embodiment of the present invention in which a simple elevation drive stage is moved up and down, FIG. 4A is a partially cutaway front view in an intermediate height use state, and FIG. FIG.

[Explanation of symbols]

 Reference Signs List 1 Stage 1a Upper frame member 1b Support base 1c Operation hole 2 Vertical screw rod member 2a Sliding base 2b Sliding nut 2c Sliding bearing 2d Bearing 2e Vertical axis miter 2f Screw 2g Reverse screw 3 Shaft 3a Worm wheel 3b Worm gear 3c Operation head 3d Bearing 3e Horizontal shaft miter 3f Operation box 4 Leg 4a Leg support member 4b Horizontal leg holding member 5 Lower frame member 6 Automatic rotation operation tool

Claims (1)

[Claims] A pair of vertical threaded rod members (2) are rotatably arranged along the inside of the upper frame member (1a) near both longitudinal edges thereof, on which a stage (1) of a rectangular plate material is loaded and fixed. The vertical threaded rod member is axially attached using a bearing (2d), and the thread groove rotation direction of one threaded portion (2f) is the same as the rotation of the other reverse thread groove with respect to the longitudinal center of the vertical threaded rod member. A pair of sliding nuts (2b), which are symmetrical with the reverse threaded portion (2g) in the direction and are symmetrically slid, are loosely fitted to the vertical threaded rod members, and the respective sliding nuts are supported inside the upper frame member and are slidable. Fixed to a sliding base (2a) equipped with a plurality of sliding bearings (2c), slidably symmetrically with respect to a longitudinal center by rotation of the vertical threaded rod member, and a short side of at least one of the upper frame member. Along the inside near the direction edge, use the shaft (3) with the bearing (3d) At the intersection of the shaft and the ends of the vertical threaded rod members at both ends, a cross play of a horizontal axis miter (3e) and a vertical axis miter (2e) is used. A mechanism for converting each rotational motion into a right angle is provided, and an operation box (3f) is provided at an intermediate portion of the shaft.
A worm wheel (3a) is attached to the shaft of the operation box.
And a worm gear (3b), which is loosely fitted at right angles to the worm wheel at right angles, is rotatably mounted on a shaft (3d) in a vertical direction inside the operation box using a bearing (3d). At the upper end of the worm gear, there is an automatic rotating operation tool (6)
The stage is provided with an operation head (3c) connectable with the operation head, and the stage has an operation hole (1c) having a hole diameter into which the tip of the automatic rotation operation tool can be inserted. On the other hand, a rectangular lower frame member (5) is provided at a lower portion corresponding to the upper frame member, and is rotatably mounted along the longitudinal direction from both longitudinal ends of the lower frame member. The other end of each leg is pivoted to the lower end of the corresponding sliding base, and the other end of each leg support member (4a) is pivoted at one end near the middle of each leg. A horizontal leg holding member (4) is provided between the center portions of the leg portions, which are pivotally mounted on the support base portion (1b) provided at the lower end portion in the longitudinal direction of the frame member and face in the short direction.
b) A simple lifting / lowering driven stage characterized in that it is constructed by holding and reinforcing it horizontally.